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  1. /*27/7/2013 version 0.01
  2. "Inspired" by FLY program: http://martin.gleeson.com/fly
  3. *********************************************************************************
  4. * J.M. Evers 7/2013                                                             *
  5. * This is all just amateur scriblings... So no copyrights.                      *
  6. * This source code file, and compiled objects derived from it,                  *
  7. * can be used and distributed without restriction, including for commercial use *
  8. * No warrenty whatsoever                                                        *
  9. *********************************************************************************
  10. */
  11. #include "canvasdraw.h"
  12.  
  13. /******************************************************************************
  14. **  Internal Functions
  15. ******************************************************************************/
  16. void    add_to_buffer(char *tmp); /* add tmp_buffer to the buffer */
  17. void    sync_input(FILE *infile);/* proceed with inputfile */
  18. void    add_javascript_function(int js_function[], int canvas_root_id);
  19. void    reset();/* reset some global variables like "use_filled" , "use_dashed" */
  20. int     get_token(FILE *infile); /* read next char until EOL*/
  21. /*
  22. int     x2px(double x);
  23. int     y2px(double y);
  24. */
  25. double  px2x(int x);
  26. double  px2y(int y);
  27. double  get_real(FILE *infile,int last); /* read a value; calculation and symbols allowed */
  28. char    *str_replace ( const char *word, const char *sub_word, const char *rep_word );
  29. char    *get_color(FILE *infile,int last); /* read hex-color or colorname -> hex */
  30. char    *get_string(FILE *infile,int last); /* get the string at the end of a command */
  31. char    *get_string_argument(FILE *infile,int last); /* the same, but with "comma" as  separator */
  32. char    *convert_hex2rgb(char *hexcolor);
  33. void    add_read_canvas(int canvas_root_id,int reply_format,int reply_precision);
  34. void    make_js_include(int canvas_root_id);
  35. void    check_string_length(int length);/* checks if the length of string argument of command is correct */
  36. FILE    *js_include_file;
  37. FILE    *get_file(int *line_number, char **filename);
  38. FILE    *infile;    /* will be stdin */
  39. /******************************************************************************
  40. ** global
  41. ******************************************************************************/
  42. int finished = FALSE;/* main variable for signalling the end of the fly-script ; if finished = 1 ; write to stdout or canvasz */
  43. int line_number = 1;/* used in canvas_error() ; keep track of line number in canvasdraw/fly - script */
  44. /* set some variables to avoid trouble (NaN) in case of syntax and other usage errors */
  45. int xsize = 320;
  46. int ysize = 320;
  47. double xmin = 0.0;
  48. double xmax = 320.0;
  49. double ymin = 0.0;
  50. double ymax = 320.0;
  51. double tmax = 0;
  52. double tmin = 0;
  53. /* flag to indicate parsing of line status */
  54. int done = FALSE;
  55. int type; /* eg command number */
  56. int onclick = 0;/* 0 = noninteractive ; 1 = onclick ; 2 = draggable*/
  57. int slider = 0;/* slider=1 : x-values ; slider=2 : y-values;slider=3 angle values */
  58. int use_affine = FALSE;
  59. int use_rotate = FALSE;
  60. int use_filled = 0; /* 0:no fill , 1:fill,2=grid?,3=hatch?,4=diamond?,5=dot?,6=image? */
  61. int use_dashed = FALSE; /* dashing not natively supported in firefox  , for now... */
  62.  
  63. char buffer[MAX_BUFFER];/* contains js-functions with arguments ... all other basic code is directly printed into js-include file */
  64. char *getfile_cmd = "";
  65. /******************************************************************************
  66. ** Main Program
  67. ******************************************************************************/
  68. int main(int argc, char *argv[]){
  69.     /* need unique id for every call to canvasdraw : rand(); is too slow...will result in many identical id's */
  70.     struct timeval tv;struct timezone tz;gettimeofday(&tv, &tz);
  71.     unsigned int canvas_root_id = (unsigned int) tv.tv_usec;
  72.     infile = stdin;/* read flyscript via stdin */
  73.     int i,c;
  74.     double double_data[MAX_INT+1];
  75.     int int_data[MAX_INT+1];
  76.     for(i=0;i<MAX_INT;i++){int_data[i]=0;double_data[i]=0;}
  77.     int use_parametric = FALSE;/* will be reset after parametric plotting */
  78.     int use_offset = FALSE;/* use_offset only for text shape objects... 0=none;1=yoffset;2=xoffset;3=xyoffset;4=centered*/
  79.     int use_axis = FALSE;
  80.     int use_axis_numbering = -1;
  81.     int use_pan_and_zoom = FALSE;
  82.     int use_safe_eval = FALSE; /* if true, add just once : js function to evaluate userinput values for plotting etc */
  83.     int use_js_math = FALSE; /* if true add js-function to convert math_function --> javascript math_function */
  84.     int use_js_plot = FALSE; /* if true , let js-engine plot the curve */
  85.     int jsplot_cnt = 0; /* keepint track on the curve identity */
  86.     int print_drag_params_only_once = FALSE;/* avoid multiple useless identical lines about javascript precision and use_dragdrop */
  87.     int line_width = 1;
  88.     int decimals = 2;
  89.     int precision = 100; /* 10 = 1;100=2;1000=3 decimal display for mouse coordinates or grid coordinate.May be redefined before every object */
  90.     int use_userdraw = FALSE; /* flag to indicate user interaction */
  91.     int drag_type = -1;/* 0,1,2 : xy,x,y */
  92.     int use_tooltip = -1; /* 1= tooltip 2= popup window*/
  93.     char *tooltip_text = "Click here";
  94.     char *temp = ""; /* */
  95.     char *bgcolor = "";/* used for background of canvas_div ; default is tranparent */
  96.     char *stroke_color = "255,0,0";
  97.     char *fill_color = "0,255,0";
  98.     char *font_family = "12px Ariel"; /* commands xaxistext,yaxistext,legend,text/textup/string/stringup may us this */
  99.     char *font_color = "#00000";
  100.     char *draw_type = "points";
  101.     char *fly_font = "normal";
  102.     char *input_style = "font-family:Ariel;text-align:center;color:blue;font-size:12px;background-color:orange;";
  103.     char *flytext = "";
  104.     char *affine_matrix = "[1,0,0,1,0,0]";
  105.     char *function_label = "f(x)=";
  106.     int use_pattern = 0; /* used in drag&drop library : grid=2,hatch=3,diamond=4,dot=5*/
  107.     int canvas_type = DRAG_CANVAS; /* to use a specific canvas  for filling etc */
  108.     int pixelsize = 1;
  109.     int reply_format = 0;
  110.     int input_cnt = 0;
  111.     int ext_img_cnt = 0;
  112.     int slider_cnt = 0;
  113.     int fill_cnt = 0;
  114.     int font_size = 12;/* this may lead to problems when using something like "fontfamily Italic 24px Ariel" the "font_size" value is not substituted into fontfamily !! */
  115.     int fly_font_size = 12; /*fly_font_size is relative to this... */
  116.     int dashtype[2] = { 4 , 4 }; /* just line_px and space_px : may have more arguments...if needed in future */
  117.     int js_function[MAX_JS_FUNCTIONS]; /* javascript functions include objects on demand basis : only once per object type */
  118.     for(i=0;i<MAX_JS_FUNCTIONS;i++){js_function[i]=0;}
  119.     int arrow_head = 8; /* size in px needed for arrow based  userdraw:  "userdraw arrow,color" */
  120.     int crosshair_size = 5; /* size in px*/
  121.     int plot_steps = 250;/* the js-arrays with x_data_points and y_data_points will have size 250 each: use with care !!! use jscurve when precise plots are required  */
  122.     int found_size_command = 0; /* 1 = found size ; 2 = found xrange; 3 = found yrange :just to flag an error message */
  123.     int click_cnt = 0; /*counter to identify the "onclick" ojects ; 0 is first object set onclick: reply[click_cnt]=1 when clicked ; otherwise reply[click_cnt]=0 ; click_cnt is only increased when another object is set  again */
  124.     int clock_cnt = 0; /* counts the amount of clocks used -> unique object clock%d */
  125.     int linegraph_cnt = 0; /* identifier for command 'linegraph' ; multiple line graphs may be plotted in a single plot*/
  126.     int barchart_cnt = 0; /* identifier for command 'barchart' ; multiple charts may be plotted in a single plot*/
  127.     int boxplot_cnt = 0;
  128.     int numberline_cnt = 0;
  129.     int legend_cnt = -1; /* to allow multiple legends to be used, for multiple piecharts etc  */
  130.     int reply_precision = 100; /* used for precision of student answers / drawings */
  131.     double angle = 0.0;
  132.     char *rotation_center = "null";
  133.     int clickfillmarge = 20; /* in pixels : if the 'remove click' is within this marge, the filling is removed */
  134.     int use_animate = 0; /* used for jscurve / js parametric  */
  135.     int use_input_xy = 0; /* 1= input fields 2= textarea 3=calc y value*/
  136.     int use_slider_display = 0; /* in case of a slider, should we display its value ?*/
  137.     size_t string_length = 0; /* measure the size of the user input fly-string */
  138.     double stroke_opacity = 0.8; /* use some opacity as default */
  139.     double fill_opacity = 0.8;/* use some opacity as default */
  140.     char *URL = "http://localhost/images";
  141.     char *slider_function_x = "x";
  142.     char *slider_function_y = "y";
  143.     memset(buffer,'\0',MAX_BUFFER);
  144.     void *tmp_buffer = "";
  145.     /* default writing a unzipped js-include file into wims getfile directory */
  146.     char *w_wims_session = getenv("w_wims_session");
  147.     if(  w_wims_session == NULL || *w_wims_session == 0 ){canvas_error("Hmmm, your wims environment does not exist...\nCanvasdraw should be used within wims.");}
  148.     int L0=strlen(w_wims_session) + 21;
  149.     char *getfile_dir = my_newmem(L0); /* create memory to fit string precisely */
  150.     snprintf(getfile_dir,L0, "../sessions/%s/getfile",w_wims_session);/* string will fit precisely  */
  151.     mode_t process_mask = umask(0); /* check if file exists */
  152.     int result = mkdir(getfile_dir, S_IRWXU | S_IRWXG | S_IRWXO);
  153.     if( result == 0 || errno == EEXIST ){
  154.      umask(process_mask); /* be sure to set correct permission */
  155.      char *w_session = getenv("w_session");
  156.      int L1 = (int) (strlen(w_session)) + find_number_of_digits(canvas_root_id) + 48;
  157.      getfile_cmd = my_newmem(L1); /* create memory to fit string precisely */
  158.      snprintf(getfile_cmd,L1,"wims.cgi?session=%s&cmd=getfile&special_parm=%d.js",w_session,canvas_root_id);/* extension ".gz" is MANDATORY for webserver */
  159.     /* write the include tag to html page:<script type="text/javascript" src="wims.cgi?session=%s&cmd=getfile&special_parm=11223344_js"></script> */
  160.     /* now write file into getfile dir*/
  161.     char *w_wims_home = getenv("w_wims_home"); /* "/home/users/wims" : we need absolute path for location */
  162.     int L2 = (int) (strlen(w_wims_home)) + (int) (strlen(w_wims_session)) + find_number_of_digits(canvas_root_id) + 23;
  163.     char *location = my_newmem(L2); /* create memory to fit string precisely */
  164.     snprintf(location,L2,"%s/sessions/%s/getfile/%d.js",w_wims_home,w_wims_session,canvas_root_id);/*absolute path */
  165.     js_include_file = fopen(location,"w");/* open the file location for writing */
  166.     /* check on opening...if nogood : mount readonly? disk full? permissions not set correctly? */
  167.     if(js_include_file == NULL){ canvas_error("SHOULD NOT HAPPEN : could not write to javascript include file...check your system logfiles !" );}
  168.  
  169. /* ----------------------------------------------------- */
  170.  
  171. /* while more lines to process */
  172.  
  173.     while(!finished){
  174.         if(line_number>1 && found_size_command == 0 && use_tooltip != 2 ){canvas_error("command \"size xsize,ysize\" needs to come first ! ");}
  175.         type = get_token(infile);
  176.         done = FALSE;
  177.         /*
  178.         @ canvasdraw
  179.         @ will try use the same syntax as flydraw or svgdraw to paint a html5 bitmap image<br />by generating a tailor-made javascript include file: providing only the js-functionality needed to perform the job.<br />thus ensuring a minimal strain on the client browser <br />(unlike some popular 'canvas-do-it-all' libraries, who have proven to be not suitable for low-end computers found in schools...)
  180.         @ general syntax <ul><li>The transparency of all objects can be controlled by command <a href="#opacity">'opacity [0-255],[0,255]'</a></il><li>line width of any object can be controlled by command <a href="#linewidth">'linewidth int'</a></li><li>any may be dashed by using keyword <a href="#dashed">'dashed'</a> before the object command.<br />the dashing type can be controled by command <a href="#dashtype">'dashtype int,int'</a></li><li>a fillable object can be set fillable by starting the object command with an 'f'<br />(like frect,fcircle,ftriangle...)<br />or by using the keyword <a href="#filled">'filled'</a> before the object command.<br />The fill colour of 'non_userdraw' objects will be the stroke colour...(flydraw harmonization 19/10/2013)<br />non-solid filling (grid,hatch,diamond,dot,text) is provided using command <a href="#fillpattern">fillpattern a_pattern</a><br />for <a href="#filltoborder">filltoborder x0,y0,color</a> or <a href="#filltoborder">fill x0,y0,color</a> type filling (eg fill a region around x0,y0 with color until a border is encountered),<br />there are non-solid pattern fill analogues:<ul><li><a href="#gridfill">gridfill x,y,dx,dy,color</a></li><li><a href="#hatchfill">hatchfill x,y,dx,dy,color</a></li><li><a href="#diamondfill">diamondfill x,y,dx,dy,color</a></li><li><a href="#dotfill">dotfill x,y,dx,dy,color</a></li><li><a href="#textfill">textfill x,y,color,sometext_or_char</a></li></ul></li><li>all draggable objects may have a <a href="#slider">slider</a> for translation / rotation; several objects may be translated / rotated by a single slider</li> <li> a draggable object can be set draggable by a preceding command <a href="#drag">'drag x/y/xy'</a><br />The translation can be read by javascript:read_dragdrop();The replyformat is : object_number : x-orig : y-orig : x-drag : y-drag<br />The x-orig/y-orig will be returned in maximum precision (javascript float)...<br />the x-drag/y-drag will be returned in defined 'precision' number of decimals<br />Multiple objects may be set draggable / clickable (no limit)<br /> not all flydraw objects may be dragged / clicked<br />Only draggable / clickable objects will be scaled on <a href="#zoom">zoom</a> and will be translated in case of panning</li><li> a 'onclick object' can be set 'clickable' by the preceding keyword <a href="#onclick">'onclick'</a><br />not all flydraw objects can be set clickable</li><li><b>remarks using a ';' as command separator</b><br />commands with only numeric or colour arguments may be using a ';' as command separator (instead of a new line)<br />commands with a string argument may not use a ';' as command separator !<br />these exceptions are not really straight forward... so keep this in mind.</li><li>almost every <a href="#userdraw">"userdraw object,color"</a>  or <a href="#multidraw">"multidraw"</a> command 'family' may be combined with keywords <a href="#snaptogrid">"snaptogrid | xsnaptogrid | ysnaptogrid | snaptofunction</a> or command "snaptopoints x1,y1,x2,y2,..."  </li><li>every draggable | onclick object may be combined with keywords <a href="#snaptogrid">snaptogrid | xsnaptogrid | ysnaptogrid | snaptofunction</a> or command "snaptopoints x1,y1,x2,y2,..."  </li><li>almost every command for a single object has a multiple objects counterpart:<br /><ul>general syntaxrule:<li><em>single_object</em> x1,y1,...,color</li><li><em>multi_object</em> color,x1,y1,...</li></ul><li>All inputfields or textareas generated, can be styled individually using command <a href="#inputstyle">'inputstyle some_css'</a><br/>the fontsize used for labeling these elements can be controlled by command <a href="fontsize">'fontsize int'</a> <br />command 'fontfamily' is <b>not</b> active for these elements </li></ul>
  181.         @ If needed multiple interactive scripts may be used in a single webpage.<br />A function 'read_canvas()' and / or 'read_dragdrop()' can read all interactive userdata from these images.<br />The global array 'canvas_scripts' will contain all unique random "canvas_root_id" of the included scripts.<br />The included local javascript "read" functions "read_canvas%d()" and "read_dragdrop%d()" will have this "%d = canvas_root_id"<br />e.g. canvas_scripts[0] will be the random id of the first script in the page and will thus provide a function<br />fun = eval("read_canvas"+canvas_scripts[0]) to read user based drawings / inputfield in this first image.<br />The read_dragdrop is analogue.<br />If the default reply formatting is not suitable, use command <a href='#replyformat'>'replyformat'</a> to format the replies for an individual canvas script,<br />To read all user interactions from all included canvas scripts , use something like:<br /><em>function read_all_canvas_images(){<br />&nbsp;var script_len = canvas_scripts.length;<br />&nbsp;var draw_reply = "";<br />&nbsp;var found_result = false;<br />&nbsp;for(var p = 0 ; p < script_len ; p++){<br />&nbsp;&nbsp;var fun = eval("read_canvas"+canvas_scripts[p]);<br />&nbsp;&nbsp;if( typeof fun === 'function'){<br />&nbsp;&nbsp;&nbsp;var result = fun();<br />&nbsp;&nbsp;&nbsp;if( result&nbsp;&nbsp;&& result.length != 0){<br />&nbsp;&nbsp;&nbsp;&nbsp;if(script_len == 1 ){ return result;};<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;found_result = true;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;draw_reply = draw_reply + result + "\\n";<br />&nbsp;&nbsp;&nbsp;&nbsp;};<br />&nbsp;&nbsp;&nbsp;};<br />&nbsp;&nbsp;};<br />&nbsp;if( found_result ){return draw_reply;}else{return null;};<br />};</em>
  182.         @ you can check the javascript reply format in the wims tool <a href="http://localhost/wims/wims.cgi?lang=en&module=tool/directexec">direct exec</a>
  183.         @ for usage within OEF (without anstype "draw"), something like this (a popup function plotter) will work:<br /><small>\\text{popup_grapher=wims(exec canvasdraw <br />popup<br />size 400,400<br />xrange -10,10<br />yrange -10,10<br />axis<br />axisnumbering<br />opacity 100,100<br />grid 2,2,grey,2,2,6,black<br />snaptogrid<br />linewidth 2<br />jsplot red,5*sin(1/x)<br />strokecolor green<br />functionlabel f(x)=<br />userinput function<br />mouse blue,22<br />)<br />}<br />\\statement{<br />\\popup_grapher<br />}</small>
  184.         @ be aware that older browsers will probably not work correctly<br />no effort has been undertaken to add glue code for older browsers !! <br />in any case it's not wise to use older browsers...not just for canvasdraw
  185.         @ if you find flaws, errors or other incompatibilities -not those mentioned in this document- send <a href='mailto:jm.evers-at-schaersvoorde.nl'>me</a> an email with screenshots and the generated javascript include file.
  186.         @ there is limited support for touch devices : touchstart,touchmove and touchend in commands <a href="#userdraw">userdraw primitives </a>, <a href="#protractor">protractor</a> and <a href="#ruler">ruler</a><br />only single finger gestures are supported (for now)<br />for more accurate user-interaction with canvasdraw on touch devices: use the command family <a href="userinput_xy">userinput</a>
  187.         */
  188.         switch(type){
  189.         case END:
  190.         finished = 1;
  191.         done = TRUE;
  192.         break;
  193.         case 0:
  194.             sync_input(infile);
  195.             break;
  196.  
  197.         case CENTERED:
  198.          use_offset = 4;
  199.          /*
  200.          @ centered
  201.          @ keyword ; to place the text centered (in width and height) on the text coordinates(x:y)
  202.          @ may be used for text exactly centered on it's (x;y)
  203.          @ use <a href="#fontfamily">fontfamily</a> for setting the font
  204.          @ may be active for commands <a href="#text">text</a> and <a href="#string">string</a> (e.g. objects in the drag/drop/onclick-library)
  205.          @%centered%size 400,400%xrange -10,10%yrange -10,10%fontfamily 12pt Ariel%string blue,-9,-9,no offset%point -9,-9,red%centered%string blue,-6,-6,centered%point -6,-6,red%xoffset%string blue,-3,-3,xoffset%point -3,-3,red%yoffset%string blue,0,0,yoffset%point 0,0,red%xyoffset%string blue,3,3,xyoffset%point 3,3,red%resetoffset%string blue,6,6,resetoffset%point 6,6,red
  206.         */
  207.         break;
  208.  
  209.         case COMMENT:
  210.             sync_input(infile);
  211.             break;
  212.         case AFFINE:
  213.         /*
  214.          @ affine a,b,c,d,tx,ty
  215.          @ defines a transformation matrix for subsequent objects
  216.          @ images drawn by setting skew params a &amp; d will be very different from Flydraw's "affine a,b,c,d,e,tx,ty" !!
  217.          @ use keyword 'killaffine' to end the transformation
  218.          @ note 1: only 'draggable' / 'noclick' objects can be transformed.
  219.          @ note 2: do not use 'onclick' or 'drag xy' with tranformation objects : the mouse coordinates do not get transformed (yet)
  220.          @ note 3: no matrix operations on the transformation matrix implemented (yet)
  221.          @ a : Scales the drawings horizontally
  222.          @ b : Skews the drawings horizontally
  223.          @ c : Skews the drawings vertically
  224.          @ d : Scales the drawings vertically
  225.          @ tx: Moves the drawings horizontally in xrange coordinate system
  226.          @ ty: Moves the drawings vertically in yrange coordinate system
  227.          @ the data precision may be set by preceding command "precision int"
  228.          @%affine%size 400,400%xrange -10,10%yrange -10,10%opacity 255,255%fcircle 5,5,40,blue%affine 1,0,0,1,-10,-10%fcircle 5,5,40,green
  229.         */
  230.             for(i = 0 ; i<6;i++){
  231.                 switch(i){
  232.                     case 0: double_data[0] = get_real(infile,0);break;
  233.                     case 1: double_data[1] = get_real(infile,0);break;
  234.                     case 2: double_data[2] = get_real(infile,0);break;
  235.                     case 3: double_data[3] = get_real(infile,0);break;
  236.                     case 4: double_data[4] = get_real(infile,0);break;
  237.                     case 5: double_data[5] = get_real(infile,1);
  238.                         use_affine = TRUE;
  239.                         decimals = find_number_of_digits(precision);
  240.                         string_length = snprintf(NULL,0,     "[%.*f,%.*f,%.*f,%.*f,%.*f,%.*f] ",decimals,double_data[0],decimals,double_data[1],decimals,double_data[2],decimals,double_data[3],decimals,double_data[4]*xsize/(xmax - xmin),decimals,-1*double_data[5]*ysize/(ymax - ymin));
  241.                         check_string_length(string_length);affine_matrix = my_newmem(string_length+1);
  242.                         snprintf(affine_matrix,string_length,"[%.*f,%.*f,%.*f,%.*f,%.*f,%.*f] ",decimals,double_data[0],decimals,double_data[1],decimals,double_data[2],decimals,double_data[3],decimals,double_data[4]*xsize/(xmax - xmin),decimals,-1*double_data[5]*ysize/(ymax - ymin));
  243.                         break;
  244.                     default: break;
  245.                 }
  246.             }
  247.         break;
  248.  
  249.         case ANGLE:
  250.         /*
  251.          @ angle xc,yc,width,start_angle,end_angle,color
  252.          @ width is in x-range
  253.          @ will zoom in/out
  254.          @ if size is controlled by command <a href='#slider'>'slider'</a> use radians to set limits of slider.
  255.          @%angle%size 400,400%xrange -10,10%yrange -10,10%filled%fillcolor orange%angle 0,0,4,10,135,blue
  256.         */
  257.             for(i=0;i<7;i++){
  258.                 switch(i){
  259.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  260.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  261.                     case 2:double_data[2] = get_real(infile,0);break; /* width in pixels ! */
  262.                     case 3:double_data[3] = get_real(infile,0);break; /* start angle in degrees */
  263.                     case 4:double_data[4] = get_real(infile,0);break; /* end angle in degrees */
  264.                     case 5:stroke_color = get_color(infile,1);/* name or hex color */
  265.                         decimals = find_number_of_digits(precision);
  266.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,17,[%.*f,%.*f],[%.*f,%.*f],[%.*f,%.*f],[%.*f,%.*f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[0],decimals,double_data[1],decimals,double_data[1],decimals,double_data[2],decimals,double_data[2],decimals,double_data[3],decimals,double_data[4],line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  267.                         reset();
  268.                     break;
  269.                 }
  270.             }
  271.             break;
  272.  
  273.         case ANIMATE:
  274.         /*
  275.          @ animate
  276.          @ keyword
  277.          @ the animated point is a filled rectangle ; adjust colour with command 'fillcolor colorname/hexnumber'
  278.          @ use linewidth to adjust size of the points
  279.          @ will animate a point on the next jsplot/jscurve command
  280.          @ only usable for command jsplot (normal functions or parametric)
  281.          @ moves repeatedly from xmin to xmax or incase of a parametric function from tmin to tmax (set trange)
  282.          @%animate%size 400,400%xrange -10,10%yrange -10,10%axis%axisnumbering%precision 1%grid 2,2,grey,2,2,5,grey%precision 100%linewidth 4%fillcolor red%animate%trange -2*pi,2*pi%linewidth 1%opacity 255,50%canvastype 100%fill 1.2,1.2,red%canvastype 101%fill -1.2,-1.2,blue%jsplot blue,7*cos(x),5*sin(2*x)
  283.         */
  284.             use_animate = 1;
  285.             fprintf(js_include_file,"\nvar trace_canvas  = create_canvas%d(%d,xsize,ysize);var trace_ctx = trace_canvas.getContext('2d');trace_ctx.fillStyle = 'rgba(%s,%f)';trace_ctx.strokeStyle = 'rgba(%s,%f)';trace_ctx.lineWidth = %d;var anim_pos = 0;function animate_this(){trace_ctx.clearRect(0,0,xsize,ysize);trace_ctx.fillRect(x_anim_points[anim_pos]-%d, y_anim_points[anim_pos]-%d,%d,%d);setTimeout(function(){requestAnimationFrame(animate_this);anim_pos++}, 50);if(anim_pos > animation_steps){anim_pos = 0;};};",canvas_root_id,ANIMATE_CANVAS,fill_color,fill_opacity,stroke_color,stroke_opacity,line_width,line_width,line_width,2*line_width,2*line_width);
  286.             break;
  287.  
  288.         case ARC:
  289.         /*
  290.          @ arc xc,yc,x-width,y-height,start_angle,end_angle,color
  291.          @ can <b>not</b> be set "onclick" or "drag xy"
  292.          @ <b>attention</b>: width in height in x/y-range
  293.          @%arc%size 400,400%xrange -10,10%yrange -10,10%arc 0,0,4,4,10,135,red%zoom blue
  294.         */
  295.             for(i=0;i<7;i++){
  296.                 switch(i){
  297.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  298.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  299.                     case 2:double_data[2] = get_real(infile,0);break; /* width x-range no pixels ! */
  300.                     case 3:double_data[3] = get_real(infile,0);break; /* height y-range no pixels ! */
  301.                     case 4:double_data[4] = get_real(infile,0);break; /* start angle in degrees */
  302.                     case 5:double_data[5] = get_real(infile,0);break; /* end angle in degrees */
  303.                     case 6:stroke_color = get_color(infile,1);/* name or hex color */
  304.                     /* in Shape library:
  305.                         x[0] = x[1] = xc = double_data[0]
  306.                         y[0] = y[1] = yc = double_data[1]
  307.                         w[0] = width = double_data[2]
  308.                         w[1] = height = double_data[3]
  309.                         h[0] = start_angle = double_data[4]
  310.                         h[1] = end_angle = double_data[5]
  311.                     */
  312.                         decimals = find_number_of_digits(precision);
  313.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,12,[%.*f,%.*f],[%.*f,%.*f],[%.*f,%.*f],[%.*f,%.*f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[0],decimals,double_data[1],decimals,double_data[1],decimals,double_data[2],decimals,double_data[3],decimals,double_data[4],decimals,double_data[5],line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  314.                         reset();
  315.                     break;
  316.                 }
  317.             }
  318.             break;
  319.         case ARROW:
  320.         /*
  321.         @ arrow x1,y1,x2,y2,h,color
  322.         @ alternative : vector
  323.         @ draw a single headed arrow / vector from (x1:y1) to (x2:y2)<br />with arrowhead size h in px and in color 'color'
  324.         @ use command 'linewidth int' to adjust thickness of the arrow
  325.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
  326.         @%arrow%size 400,400%xrange -10,10%yrange -10,10%drag xy%arrow 0,0,4,3,8,blue%
  327.         */
  328.             for(i=0;i<6;i++){
  329.                 switch(i){
  330.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  331.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  332.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  333.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  334.                     case 4: arrow_head = (int) get_real(infile,0);break;/* h */
  335.                     case 5: stroke_color = get_color(infile,1);/* name or hex color */
  336.                         decimals = find_number_of_digits(precision);
  337.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,8,[%.*f,%.*f],[%.*f,%.*f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[2],decimals,double_data[1],decimals,double_data[3],arrow_head,arrow_head,arrow_head,arrow_head,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  338.                         if(onclick > 0){click_cnt++;}
  339.                         /* click_cnt++;*/
  340.                         reset();
  341.                         break;
  342.                 }
  343.             }
  344.             break;
  345.  
  346.         case ARROWS:
  347.         /*
  348.         @ arrows color,head (px),x1,y1,x2,y2...x_n,y_n
  349.         @ alternative : vectors
  350.         @ draw single headed arrows / vectors from (x1:y1) to (x2:y2) ... (x3:y3) to (x4:y4) etc ... in color 'color'
  351.         @ use command 'linewidth int' to adjust thickness of the arrow
  352.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> individually
  353.         @%arrows%size 400,400%xrange -10,10%yrange -10,10%onclick%arrows red,8,0,0,4,3,0,0,2,4,0,0,-2,4,0,0,-3,-4,0,0,3,-2%
  354.         */
  355.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  356.             fill_color = stroke_color;
  357.             arrow_head = (int) get_real(infile,0);/* h */
  358.             i=0;
  359.             while( ! done ){     /* get next item until EOL*/
  360.                 if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
  361.                 if(i%2 == 0 ){
  362.                     double_data[i] = get_real(infile,0); /* x */
  363.                 }
  364.                 else
  365.                 {
  366.                     double_data[i] = get_real(infile,1); /* y */
  367.                 }
  368.                 i++;
  369.             }
  370.             decimals = find_number_of_digits(precision);
  371.             for(c = 0 ; c < i-1 ; c = c+4){
  372.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,8,[%.*f,%.*f],[%.*f,%.*f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[c],decimals,double_data[c+2],decimals,double_data[c+1],decimals,double_data[c+3],arrow_head,arrow_head,arrow_head,arrow_head,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  373.                 if(onclick > 0){click_cnt++;}
  374.                 /* click_cnt++; */
  375.             }
  376.             reset();
  377.             break;
  378.  
  379.         case ARROW2:
  380.         /*
  381.         @ arrow2 x1,y1,x2,y2,h,color
  382.         @ draw a double headed arrow/vector from (x1:y1) to (x2:y2)<br />with arrowhead size h in px and  in color 'color'
  383.         @ use command 'arrowhead int' to adjust the arrow head size
  384.         @ use command 'linewidth int' to adjust thickness of the arrow
  385.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
  386.         @%arrow2%size 400,400%xrange -10,10%yrange -10,10%drag xy%arrow2 0,0,4,3,8,blue%
  387.         */
  388.             for(i=0;i<6;i++){
  389.                 switch(i){
  390.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  391.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  392.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  393.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  394.                     case 4: arrow_head = (int) get_real(infile,0);break;/* h */
  395.                     case 5: stroke_color = get_color(infile,1);/* name or hex color */
  396.                         decimals = find_number_of_digits(precision);
  397.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,10,[%.*f,%.*f],[%.*f,%.*f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[2],decimals,double_data[1],decimals,double_data[3],arrow_head,arrow_head,arrow_head,arrow_head,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  398.                         if(onclick > 0){click_cnt++;}
  399.                         /* click_cnt++;*/
  400.                         reset();
  401.                         break;
  402.                 }
  403.             }
  404.             break;
  405.  
  406.         case ARROWS2:
  407.         /*
  408.         @ arrows2 color,head (px),x1,y1,x2,y2...x_n,y_n
  409.         @ draw double headed arrows / vectors from (x1:y1) to (x2:y2) ... (x3:y3) to (x4:y4) etc ... in color 'color'
  410.         @ use command 'linewidth int' to adjust thickness of the arrows
  411.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> individually
  412.         @%arrows2%size 400,400%xrange -10,10%yrange -10,10%onclick%arrows2 red,8,0,0,4,3,1,1,2,4,2,2,-2,4,3,3,-3,-4,0,0,3,-2%
  413.         */
  414.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  415.             fill_color = stroke_color;
  416.             arrow_head = (int) get_real(infile,0);/* h */
  417.             i=0;
  418.             while( ! done ){     /* get next item until EOL*/
  419.                 if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
  420.                 if(i%2 == 0 ){
  421.                     double_data[i] = get_real(infile,0); /* x */
  422.                 }
  423.                 else
  424.                 {
  425.                     double_data[i] = get_real(infile,1); /* y */
  426.                 }
  427.                 i++;
  428.             }
  429.             decimals = find_number_of_digits(precision);
  430.             for(c = 0 ; c < i-1 ; c = c+4){
  431.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,10,[%.*f,%.*f],[%.*f,%.*f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[c],decimals,double_data[c+2],decimals,double_data[c+1],decimals,double_data[c+3],arrow_head,arrow_head,arrow_head,arrow_head,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  432.                 if(onclick > 0){click_cnt++;}
  433.                 /* click_cnt++; */
  434.  
  435.             }
  436.             reset();
  437.             break;
  438.         case ARROWHEAD:
  439.         /*
  440.         @ arrowhead int
  441.         @ default 8 (pixels)
  442.         */
  443.             arrow_head = (int) (get_real(infile,1));
  444.             break;
  445.  
  446.         case AUDIO:
  447.         /*
  448.         @ audio x,y,w,h,loop,visible,audiofile location
  449.         @ x,y : left top corner of audio element (in xrange / yrange)
  450.         @ w,y : width and height in pixels
  451.         @ loop : 0 or 1 ( 1 = loop audio fragment)
  452.         @ visible : 0 or 1 (1 = show controls)
  453.         @ audio format may be in *.mp3 or *.ogg
  454.         @ If you are using *.mp3 : be aware that FireFox will not (never) play this ! (Pattented format)
  455.         @ if you are using *.ogg : be aware that Microsoft based systems not support it natively
  456.         @ To avoid problems supply both types (mp3 and ogg) of audiofiles.<br />the program will use both as source tag
  457.         */
  458.             if( js_function[DRAW_AUDIO] != 1 ){ js_function[DRAW_AUDIO] = 1;}
  459.             for(i=0;i<7;i++){
  460.                 switch(i){
  461.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x in x/y-range coord system -> pixel */
  462.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y in x/y-range coord system  -> pixel */
  463.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* pixel width */
  464.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* height pixel height */
  465.                     case 4: int_data[4] = (int) (get_real(infile,0)); if(int_data[4] != TRUE){int_data[4] = FALSE;} break; /* loop boolean */
  466.                     case 5: int_data[5] = (int) (get_real(infile,0)); if(int_data[5] != TRUE){int_data[5] = FALSE;} break; /* visible boolean */
  467.                     case 6:
  468.                     temp = get_string(infile,1);
  469.                     if( strstr(temp,".mp3") != 0 ){ temp = str_replace(temp,".mp3","");}
  470.                     if( strstr(temp,".ogg") != 0 ){ temp = str_replace(temp,".ogg","");}
  471.                     string_length = snprintf(NULL,0,  "draw_audio(%d,%d,%d,%d,%d,%d,%d,\"%s.ogg\",\"%s.mp3\");\n",canvas_root_id,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],temp,temp);
  472.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  473.                     snprintf(tmp_buffer,string_length,"draw_audio(%d,%d,%d,%d,%d,%d,%d,\"%s.ogg\",\"%s.mp3\");\n",canvas_root_id,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],temp,temp);
  474.                     add_to_buffer(tmp_buffer);
  475.                     break;
  476.                     default:break;
  477.                 }
  478.             }
  479.             reset();
  480.             break;
  481.  
  482.  
  483.         case AXIS_NUMBERING:
  484.         /*
  485.             @ axisnumbering
  486.             @ keyword (no arguments required)
  487.             @ for special numbering of x-axis or y-axis see grid related commands <a href="#axis">axis</a>  <a href="#xaxis">xaxis</a> , <a href="#xaxisup">xaxisup</a>, <a href="#noxaxis">noxaxis</a> ,<a href="#yaxis">yaxis</a> , <a href="#yaxisup">yaxisup</a>, <a href="#noyaxis">noyaxis</a>
  488.             @ to be used before command grid (see <a href="#grid">command grid</a>)
  489.         */
  490.             use_axis_numbering++;
  491.             break;
  492.         case AXIS:
  493.         /*
  494.             @ axis
  495.             @ keyword (no arguments required)
  496.             @ to be used before command grid (see <a href="#grid">command grid</a>)
  497.  
  498.         */
  499.             use_axis = TRUE;
  500.             break;
  501.  
  502.         case BARCHART:
  503.         /*
  504.         @ barchart x_1:y_1:color_1:x_2:y_2:color_2:...x_n:y_n:color_n
  505.         @ may <b>only</b> to be used together with command <a href='#grid'>'grid'</a>
  506.         @ can be used together with freestyle x-axis/y-axis texts : see commands <a href='#xaxis'>'xaxis'</a>,<a href='#xaxisup'>'xaxisup'</a> and <a href='#yaxis'>'yaxis'</a>
  507.         @ use command <a href='#legend'>'legend'</a> to provide an optional legend in right-top-corner
  508.         @ multiple barchart command may be used in a single script
  509.         @ also see command <a href='#piechart'>'piechart'</a>
  510.         @ note: your arguments are not checked by canvasdraw : use your javascript console in case of trouble...
  511.         @%barchart%size 400,400%xrange -1,10%yrange -2,14%legend legend Z:legend A:this is B:C:D:E:F:G:H:X%legendcolors green:red:orange:lightblue:cyan:gold:purple:darkred:yellow:lightgreen%xaxis 0:Z:1:A:2:B:3:C:4:D:5:E:6:F:7:G:8:H:9:X%noyaxis%precision 1%fontfamily bold 15px Ariel%grid 1,1,white%barchart 0:5.5:green:2:5.5:red:4:6.5:orange:6:8:lightblue:8:11:cyan:1:5.5:gold:3:9:purple:5:4:darkred:7:7:yellow:9:1:lightgreen%mouse red,14
  512.         */
  513.             temp = get_string(infile,1);
  514.             if( strstr( temp,":" ) != 0 ){ temp = str_replace(temp,":","\",\""); }
  515.             fprintf(js_include_file,"var barchart_%d = [\"%s\"];",barchart_cnt,temp);
  516.             barchart_cnt++;
  517.             reset();
  518.             break;
  519.  
  520.         case BEZIER:
  521.         /*
  522.         @ bezier color,x_start,y_start,x_first,y_first,x_second,y_second,x_end,y_end
  523.         @ draw a bezier curve between points, starting from (x_start:y_start)
  524.         @ can <b>not</b> be dragged or set onclick
  525.         */
  526.             if( js_function[DRAW_BEZIER] != 1 ){ js_function[DRAW_BEZIER] = 1;}
  527.             decimals = find_number_of_digits(precision);
  528.             for(i = 0 ; i < 9; i++){
  529.                 switch(i){
  530.                     case 0: stroke_color = get_color(infile,0);break;
  531.                     case 1: double_data[0] = get_real(infile,0);break;/* start x */
  532.                     case 2: double_data[1] = get_real(infile,0);break;/* start y */
  533.                     case 3: double_data[2] = get_real(infile,0);break;/*The x-coordinate of the first Bézier control point */
  534.                     case 4: double_data[3] = get_real(infile,0);break;/*The y-coordinate of the first Bézier control point */
  535.                     case 5: double_data[4] = get_real(infile,0);break;/*The x-coordinate of the second Bézier control point */
  536.                     case 6: double_data[5] = get_real(infile,0);break;/*The y-coordinate of the second Bézier control point */
  537.                     case 7: double_data[6] = get_real(infile,0);break;/*The x-coordinate of the Bézier end point */
  538.                     case 8: double_data[7] = get_real(infile,1);/*The y-coordinate of the Bézier end point */
  539.                         string_length = snprintf(NULL,0,"draw_bezier(%d,%d,[%f,%f,%f,%f,%f,%f,%f,%f],\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.2f,%d,%s);",STATIC_CANVAS,line_width,double_data[0],double_data[1],double_data[2],double_data[3],double_data[4],double_data[5],double_data[6],double_data[7],fill_color,fill_opacity,stroke_color,stroke_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,use_affine,affine_matrix);
  540.                         check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  541.                         snprintf(tmp_buffer,string_length,"draw_bezier(%d,%d,[%f,%f,%f,%f,%f,%f,%f,%f],\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.2f,%d,%s);",STATIC_CANVAS,line_width,double_data[0],double_data[1],double_data[2],double_data[3],double_data[4],double_data[5],double_data[6],double_data[7],fill_color,fill_opacity,stroke_color,stroke_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,use_affine,affine_matrix);
  542.                         add_to_buffer(tmp_buffer);
  543.                         break;
  544.                     default: break;
  545.                 }
  546.             }
  547.             reset();
  548.             break;
  549.  
  550.  
  551.         case BGCOLOR:
  552.         /*
  553.          @ bgcolor colorname or #hex
  554.          @ use this color as background of the "div" containing the canvas(es)
  555.          @%bgcolor%size 400,400%xrange -10,10%yrange -10,10%bgcolor lightblue
  556.         */
  557.         /* [255,255,255]*/
  558.             bgcolor = get_string(infile,1);
  559.             if(strstr(bgcolor,"#") == NULL){ /* convert colorname -> #ff00ff */
  560.                 int found = 0;
  561.                 for( i = 0; i < NUMBER_OF_COLORNAMES ; i++ ){
  562.                     if( strcmp( colors[i].name , bgcolor ) == 0 ){
  563.                         bgcolor = colors[i].hex;
  564.                         found = 1;
  565.                         break;
  566.                     }
  567.                 }
  568.                 if(found == 0){canvas_error("your bgcolor is not in my rgb.txt data list : use hexcolor...something like #a0ffc4");}
  569.             }
  570.             fprintf(js_include_file,"<!-- set background color of canvas div -->\ncanvas_div.style.backgroundColor = \"%s\";canvas_div.style.opacity = %f;\n",bgcolor,fill_opacity);
  571.             break;
  572.  
  573.         case BGIMAGE:
  574.         /*
  575.          @ bgimage image_location
  576.          @ use an image as background .<br />technical: we use the background of 'canvas_div'
  577.          @ the background image will be resized to match "width = xsize" and "height = ysize"
  578.          @%bgimage%size 400,400%xrange -10,10%yrange -10,10%bgimage https://wims.unice.fr/wims/gifs/en.gif
  579.         */
  580.         URL = get_string(infile,1);
  581.         fprintf(js_include_file,"<!-- set background image to canvas div -->\ncanvas_div.style.backgroundImage = \"url(%s)\";canvas_div.style.backgroundSize = \"%dpx %dpx\";\n",URL,xsize,ysize);
  582.             break;
  583.  
  584.         case BLINK:
  585.         /*
  586.          @ blink time(seconds)
  587.          @ NOT IMPLEMETED -YET
  588.         */
  589.             break;
  590.  
  591.         case BOXPLOT:
  592.         /*
  593.         @ boxplot x_or_y,box-height_or_box-width,position,min,Q1,median,Q3,max
  594.         @ example :<br />xrange 0,300<br />yrange 0,10<br />boxplot x,4,8,120,160,170,220,245<br />meaning: create a boxplot in x-direction, with height 4 (in yrange) and centered around line y=8
  595.         @ example :<br />xrange 0,10<br />yrange 0,300<br />boxplot y,4,8,120,160,170,220,245<br />meaning: create a boxplot in y-direction, with width 4 (in xrange) and centered around line x=8
  596.         @ use command <a href='#filled'>'filled'</a> to fill the box<br /><b>note:</b> the strokecolor is used for filling Q1, the fillcolor is used for filling Q3
  597.         @ use command <a href='#fillpattern'>'fillpattern some_pattern'</a> to use a (diamond for Q1, hatch for Q3) pattern.
  598.         @ use command <a href='#opacity'>'opacity'</a> to adjust fill_opacity of stroke and fill colours
  599.         @ use command <a href='#legend'>'legend'</a> to automatically create a legend <br />unicode allowed in legend<br />use command 'fontfamily' to set the font of the legend.
  600.         @ there is no limit to the number of boxplots used.
  601.         @ can <b>not</b> be set draggable (<a href='#onclick'>'onclick'</a> is not ready ,yet)
  602.         @ use keyword <a href="#userboxplot">'userboxplot'</a> before command boxplot, if a pupil must draw a boxplot (using his own min,Q1,median,Q3,max data)
  603.         @ use keyword <a href="#userboxplotdata">'userboxplotdata'</a> before command boxplot, if a pupil must generate the data by some means.
  604.         @ use command <a href="#boxplotdata">'boxplotdata'</a> when the boxplot should be drawn from wims-generated raw statistical date
  605.         @%boxplot_1%size 400,400%xrange 0,300%yrange 0,10%opacity 120,50%filled%fillcolor orange%strokecolor blue%linewidth 2%boxplot x,4,8,120,160,170,220,245
  606.         @%boxplot_2%size 400,400%xrange 0,10%yrange 0,300%opacity 120,50%filled%fillcolor orange%strokecolor blue%linewidth 2%boxplot y,4,8,120,160,170,220,245
  607.         */
  608.             if( js_function[DRAW_BOXPLOT] != 1 ){ js_function[DRAW_BOXPLOT] = 1;}
  609.             for(i=0;i<8;i++){
  610.                 switch(i){
  611.                     case 0: temp = get_string_argument(infile,0);
  612.                             if( strstr(temp,"x") != 0){int_data[0] = 1;}else{int_data[0] = 0;} break; /* x or y */
  613.                     case 1: double_data[0] = get_real(infile,0);break;/* height | width  */
  614.                     case 2:
  615.                     if( js_function[DRAW_JSBOXPLOT] == 0 ){
  616.                      double_data[1] = get_real(infile,0);
  617.                      fprintf(js_include_file,"var boxplot_source = 0;\n");/* we use given min,Q1,median,Q3,max */
  618.                     }
  619.                     else
  620.                     {
  621.                      double_data[1] = get_real(infile,1);
  622.                      double_data[2] = 1;
  623.                      double_data[3] = 1;
  624.                      double_data[4] = 1;
  625.                      double_data[5] = 1;
  626.                      double_data[6] = 1;
  627.                      double_data[7] = 1;
  628.                      i=8;
  629.                     }
  630.                     break;/* center value x or y */
  631.                     case 3: double_data[2] = get_real(infile,0); break;/* min */
  632.                     case 4: double_data[3] = get_real(infile,0); break;/* Q1 */
  633.                     case 5: double_data[4] = get_real(infile,0); break;/* median */
  634.                     case 6: double_data[5] = get_real(infile,0); break;/* Q3 */
  635.                     case 7: double_data[6] = get_real(infile,1); break;/* max */
  636.                     default:break;
  637.                 }
  638.             }
  639.             decimals = find_number_of_digits(precision);
  640.             /*function draw_boxplot(canvas_type,xy,hw,cxy,data,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype0,dashtype1)*/
  641.             string_length = snprintf(NULL,0,  "draw_boxplot(%d,%d,%.*f,%.*f,[%.*f,%.*f,%.*f,%.*f,%.*f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d);\n",BOXPLOT_CANVAS+boxplot_cnt,int_data[0],decimals,double_data[0],decimals,double_data[1],decimals,double_data[2],decimals,double_data[3],decimals,double_data[4],decimals,double_data[5],decimals,double_data[6],line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1]);
  642.             check_string_length(string_length);
  643.             tmp_buffer = my_newmem(string_length+1);
  644.             snprintf(tmp_buffer,string_length,  "draw_boxplot(%d,%d,%.*f,%.*f,[%.*f,%.*f,%.*f,%.*f,%.*f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d);\n",BOXPLOT_CANVAS+boxplot_cnt,int_data[0],decimals,double_data[0],decimals,double_data[1],decimals,double_data[2],decimals,double_data[3],decimals,double_data[4],decimals,double_data[5],decimals,double_data[6],line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1]);
  645.             add_to_buffer(tmp_buffer);
  646.             boxplot_cnt++;
  647.             reset();
  648.         break;
  649.         case BOXPLOTDATA:
  650.         /*
  651.         @ boxplotdata some_data
  652.         @ 'some_data' are a list of numbers separated by a comma "," (items)
  653.         @ only be used before command 'boxplot': the command <a href="#boxplot">'boxplot'</a> will provide the boxplot drawing of the data.
  654.         @ xrange 0,100<br />yrange 0,10<br />boxplotdata 11,22,13,15,23,43,12,12,14,2,45,32,44,13,21,24,13,19,35,21,24,23<br />boxplot x,4,5
  655.         @ note: wims will not check your data input | format. use js-error console to debug any problems.
  656.         @ a javascript function 'statistics()' will parse the data and calculate the values [min,Q1,median,Q3,max] and hand them to the boxplot draw function.
  657.         */
  658.             if( js_function[DRAW_JSBOXPLOT] != 1 ){ js_function[DRAW_JSBOXPLOT] = 1;}
  659.             if( js_function[DRAW_BOXPLOT] != 1 ){ js_function[DRAW_BOXPLOT] = 1;}
  660.             fprintf(js_include_file,"var boxplot_source = 1;var jsboxplot_data = [%s];\n",get_string(infile,1));
  661.  
  662.         break;
  663.  
  664.         case CANVASTYPE:
  665.          canvas_type = (int) (get_real(infile,1));
  666.         /*
  667.         @ canvastype TYPE
  668.         @ for now only usefull before commands  filltoborder / floodfill / clickfill etc operations<br />Only the images of this TYPE will be scanned and filled
  669.         @ default value of TYPE is DRAG_CANVAS e.g. 5 (all clickable / draggable object are in this canvas)
  670.         @ use another TYPE, if you know what you are doing...
  671.         @ other possible canvasses (transparent PNG pictures xsize x ysize on top of each other)<ul><li> EXTERNAL_IMAGE_CANVAS  0</li><li> BG_CANVAS    1</li><li> STATIC_CANVAS        2</li><li> MOUSE_CANVAS 3</li><li> GRID_CANVAS  4</li><li> DRAG_CANVAS  5</li><li> DRAW_CANVAS  6</li><li> TEXT_CANVAS  7</li><li> CLOCK_CANVAS 8</li><li> ANIMATE_CANVAS       9</li><li> TRACE_CANVAS 10</li><li>BOXPLOT_CANVAS 11</li><li> JSPLOT_CANVAS     100  , will increase with every call</li><li> FILL_CANVAS       200  , will increase with every call </li><li> USERDRAW_JSPLOT 300  , will increase with every call </li><li>CLICKFILL_CANVAS 400  , will increase with every call/click</li><li>BOXPLOT_CANVAS 500  , will increase with every call</li></ul>
  672.         */
  673.         break;
  674.  
  675.         case CENTERSTRING:
  676.         /*
  677.          @ centerstring color,y-value,the text string
  678.          @ title color,y-value,the text string
  679.          @ draw a string centered on the canvas at y = y-value
  680.          @ can not be set "onclick" or "drag xy" (...)
  681.          @ unicode supported: centerstring red,5,\\u2232
  682.          @ use a command like 'fontfamily italic 24pt Ariel' <br />to set fonts on browser that support font change
  683.          @%centerstring%size 400,400%xrange -10,10%yrange -10,10%bgcolor lightblue%fontfamily italic 22pt Courier%centerstring blue,7,the center
  684.         */
  685.             if( js_function[DRAW_CENTERSTRING] != 1 ){ js_function[DRAW_CENTERSTRING] = 1;}
  686.             for(i=0;i<3;i++){
  687.                 switch(i){
  688.                     case 0: stroke_color = get_color(infile,0);break;/* name or hex color */
  689.                     case 1: double_data[0] = get_real(infile,0);break; /* y in xrange*/
  690.                     case 2: temp = get_string_argument(infile,1);
  691.                             /* draw_text = function(canvas_type,y,font_family,stroke_color,stroke_opacity,text) */
  692.                             decimals = find_number_of_digits(precision);
  693.                             string_length = snprintf(NULL,0,
  694.                             "draw_centerstring(%d,%.*f,\"%s\",\"%s\",%.2f,\"%s\");\n",canvas_root_id,decimals,double_data[0],font_family,stroke_color,stroke_opacity,temp);
  695.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  696.                             snprintf(tmp_buffer,string_length,"draw_centerstring(%d,%.*f,\"%s\",\"%s\",%.2f,\"%s\");\n",canvas_root_id,decimals,double_data[0],font_family,stroke_color,stroke_opacity,temp);
  697.                             add_to_buffer(tmp_buffer);
  698.                             break;
  699.                     default:break;
  700.                 }
  701.             }
  702.             break;
  703.  
  704.  
  705.         case CIRCLE:
  706.         /*
  707.         @ circle xc,yc,width (2*r in pixels),color
  708.         @ use command 'fcircle xc,yc,d,color'
  709.         @ alternative: disk for a filled circle
  710.         @ use command 'fillcolor color' to set the fillcolor
  711.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
  712.         @ will shrink / expand on zoom out / zoom in
  713.         @%circle%size 400,400%xrange -10,10%yrange -10,10%filled%fillcolor lightblue%opacity 255,50%drag xy%circle 0,0,60,red%zoom red
  714.         */
  715.             for(i=0;i<4;i++){
  716.                 switch(i){
  717.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  718.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  719.                     case 2: double_data[2] = px2x((get_real(infile,0))/2) - px2x(0);break; /* for zoom in/out : radius in 'dx' xrange*/
  720.                     case 3: stroke_color = get_color(infile,1);/* name or hex color */
  721.                         decimals = find_number_of_digits(precision);
  722.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,13,[%.*f],[%.*f],[%.3f],[%.3f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[1],double_data[2],double_data[2],line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  723.                         if(onclick > 0){click_cnt++;}
  724.                         /* click_cnt++;*/
  725.                         reset();
  726.                         break;
  727.                     default : break;
  728.                 }
  729.             }
  730.             break;
  731.  
  732.         case CIRCLES:
  733.         /*
  734.         @ circles color,xc1,yc1,r1,xc2,yc2,r2...xc_n,yc_n,r_n
  735.         @ <b>attention</b> r = radius in x-range (!)
  736.         @ use keyword 'filled' or command 'fcircles' to produce solid circles
  737.         @ alternative : disks for filled circles
  738.         @ use command 'fillcolor color' to set the fillcolor
  739.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> (individually)
  740.         @ will shrink / expand on zoom out / zoom in
  741.         @%circles%size 400,400%xrange -10,10%yrange -10,10%filled%fillcolor lightblue%opacity 255,50%drag xy%circles blue,0,0,2,2,2,3,-3,-3,3,3,3,4,3,-4,2%zoom red
  742.         */
  743.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  744.             fill_color = stroke_color;
  745.             i=1;
  746.             while( ! done ){     /* get next item until EOL*/
  747.                 if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
  748.                 switch (i%3){
  749.                  case 1:double_data[i-1] = get_real(infile,0);break; /* x */
  750.                  case 2:double_data[i-1] = get_real(infile,0);break; /* y */
  751.                  case 0:double_data[i-1] = get_real(infile,1);break; /* r */
  752.                 }
  753.                 i++;
  754.             }
  755.             decimals = find_number_of_digits(precision);
  756.             for(c = 0 ; c < i-1 ; c = c+3){
  757.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,13,[%.*f],[%.*f],[%.3f],[%.3f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[c],decimals,double_data[c+1],double_data[c+2],double_data[c+2],line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  758.                 if(onclick > 0){click_cnt++;}
  759.                 /* click_cnt++; */
  760.             }
  761.             reset();
  762.             break;
  763.         case CLEARBUTTON:
  764.         /*
  765.          @ clearbutton value
  766.          @ alternative : delete
  767.          @ alternative : erase
  768.          @ adds a button to clear the <a href="#userdraw">userdraw</a> canvas with text 'value'
  769.          @ <b>attention</b> command 'clearbutton' is incompatible with <a href="multidraw">multidraw</a> based drawings<br/>(in 'multidraw' there is always a remove_object_button for every drawprimitive)
  770.          @ normally <a href="#userdraw">userdraw</a> primitives have the option to use middle/right mouse button on<br /> a point of the object to remove this specific object...this clear button will remove all drawings
  771.          @ uses the tooltip placeholder div element: may not be used with command 'intooltip'
  772.          @ use command <a href="#inputstyle">'inputstyle'</a> to style the button...
  773.          @ the clearbutton will have id="canvas_scripts[%d]" ; starting with %d=0 for the first script<br />to change the style of all "clearbutton" of all included canvasdraw scripts, use something like<br /><em>if(document.getElementById("clearbutton"+canvas_scripts[0])){<br />&nbsp;var p = 0;<br />&nbsp;while(document.getElementById("clearbutton"+canvas_scripts[p])){<br />&nbsp;&nbsp;document.getElementById("clearbutton"+canvas_scripts[p]).className="some_class_name";<br />&nbsp;&nbsp;&lt;!&minus;&minus; or document.getElementById("clearbutton"+canvas_scripts[p]).setAttribute("style","some_style"); &minus;&minus;&gt;<br />&nbsp;&nbsp;p++;<br />&nbsp;};<br />};<br />
  774.          @%clearbutton%size 400,400%xrange -10,10%yrange -10,10%filled%fillcolor lightblue%opacity 255,50%userdraw circles,red%clearbutton Remove All
  775.         */
  776.         if(reply_format == 29){/* eg multidraw is selected */
  777.          canvas_error("command clearbutton incompatible with multidraw...only suitable for userdraw");
  778.         }
  779.             add_clear_button(js_include_file,canvas_root_id,input_style,get_string(infile,1));
  780.         break;
  781.  
  782.         case CLOCK:
  783.         /*
  784.         @ clock x,y,r(px),H,M,S,type hourglass,interactive [ ,H_color,M_color,S_color,background_color,foreground_color ]
  785.         @ use command 'opacity stroke-opacity,fill-opacity' to adjust foreground (stroke) and background (fill) transparency
  786.         @ type hourglass:<br />type = 0 : only segments<br />type = 1 : only numbers<br />type = 2 : numbers and segments
  787.         @ colors are optional: if not defined, default values will be used<br />default colours: clock 0,0,60,4,35,45,1,2<br />custom colours: clock 0,0,60,4,35,45,1,2,,,,yellow,red<br />custom colours: clock 0,0,60,4,35,45,1,2,white,green,blue,black,yellow
  788.         @ if you don't want a seconds hand (or minutes...), just make it invisible by using the background color of the hourglass...
  789.         @ interactive <ul><li>0 : not interactive, just clock(s)</li><li>1 : function read_canvas() will read all active clocks in H:M:S format<br />The active clock(s) can be adjusted by pupils</li><li>2 : function read_canvas() will return the clicked clock <br />(like multiplechoice; first clock in script in nr. 0 )</li><li>3: no prefab buttons...create your own buttons (or other means) to make the clock(s) adjustable by javascript function set_clock(num,type,diff)<br />wherein: num = clock id (starts with 0) ; type = 1 (hours) ; type = 2 (minutes) ; type = 3 (seconds) <br />and diff = the increment of 'type' (positive or negative) </li></ul>
  790.         @ canvasdraw will not check validity of colornames...the javascript console is your best friend
  791.         @ no combinations with other reply_types allowed, for now
  792.         @ if interactive is set to '1', 6 buttons per clock will be displayed for adjusting a clock (H+ M+ S+ H- M- S-)<br /> set_clock(clock_id,type,incr) <br />first clock has clock_id=0 ; type : H=1,M=2,S=3 ; incr : increment integer
  793.         @ note: if you need multiple -interactive- clocks on a webpage, use multiple 'clock' commands in a single script !<br />and <i>not multiple canvas scripts</i> in a single page
  794.         @ note: clocks will not zoom or pan, when using command <a href='#zoom'>'zoom'</a>
  795.         @%clock_1%size 400,400%xrange -10,10%yrange -10,10%clock 0,0,120,4,35,45,0,0,red,green,blue,lightgrey,black
  796.         @%clock_2%size 400,400%xrange -10,10%yrange -10,10%clock 0,0,120,4,35,45,1,1,red,green,blue,lightgrey,black
  797.         @%clock_3%size 400,400%xrange -10,10%yrange -10,10%clock -5,0,80,4,35,45,2,2,red,green,blue,lightgrey,black%clock 5,0,80,3,15,65,2,2,red,green,blue,lightgrey,black
  798.         @%clock_4%size 400,400%xrange -10,10%yrange -10,10%clock 0,0,120,4,35,45,0,0,red,green,blue,lightgrey,black
  799.         @%clock_5%size 400,400%xrange -10,10%yrange -10,10%clock 0,0,120,4,35,45,1,1,red,green,blue,lightgrey,black
  800.         @%clock_6%size 400,400%xrange -10,10%yrange -10,10%clock -5,0,80,4,35,45,2,2,red,green,blue,lightgrey,black%clock 5,0,80,8,55,15,2,2,red,green,blue,lightgrey,black
  801.         @%clock_7%size 400,400%xrange -10,10%yrange -10,10%clock 0,0,120,4,35,45,2,0,red,green,blue,lightgrey,black
  802.         */
  803.             if( js_function[DRAW_CLOCK] != 1 ){ js_function[DRAW_CLOCK] = 1;}
  804.  
  805.         /*    var clock = function(xc,yc,radius,H,M,S,h_color,m_color,s_color,bg_color,fg_color) */
  806.             for(i=0;i<9;i++){
  807.              switch(i){
  808.               case 0: int_data[0] = x2px(get_real(infile,0)); break; /* xc */
  809.               case 1: int_data[1] = y2px(get_real(infile,0)); break; /* yc */
  810.               case 2: int_data[2] = get_real(infile,0);break;/* radius in px */
  811.               case 3: int_data[3] = get_real(infile,0);break;/* hours */
  812.               case 4: int_data[4] = get_real(infile,0);break;/* minutes */
  813.               case 5: int_data[5] = get_real(infile,0);break;/* seconds */
  814.               case 6: int_data[6] = get_real(infile,0);if(int_data[6] < 0 || int_data[6] > 2){canvas_error("hourglass can be 0,1 or 2");}break;/* type hourglass */
  815.               case 7: int_data[7] = (int)(get_real(infile,1));/* interactive 0,1,2*/
  816.                 switch(int_data[7]){
  817.                     case 0:break;
  818.                     case 1:if(clock_cnt == 0){
  819.                            if( reply_format == 0 ){
  820.                             reply_format = 18; /* user sets clock */
  821.                             /* string_length = snprintf(NULL,0,"set_clock = function(num,type,diff){var name = eval(\"clocks\"+num);switch(type){case 1:name.H = parseInt(name.H+diff);break;case 2:name.M = parseInt(name.M+diff);break;case 3:name.S = parseInt(name.S+diff);break;default: break;};name = clock(name.xc,name.yc,name.radius,name.H,name.M,name.S,name.type,name.interaction,name.H_color,name.M_color,name.S_color,name.bg_color,name.fg_color);};\n");
  822.                                check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  823.                                snprintf(tmp_buffer,string_length,"set_clock = function(num,type,diff){var name = eval(\"clocks\"+num);switch(type){case 1:name.H = parseInt(name.H+diff);break;case 2:name.M = parseInt(name.M+diff);break;case 3:name.S = parseInt(name.S+diff);break;default: break;};name = clock(name.xc,name.yc,name.radius,name.H,name.M,name.S,name.type,name.interaction,name.H_color,name.M_color,name.S_color,name.bg_color,name.fg_color);};\n");
  824.                                add_to_buffer(tmp_buffer);
  825.                            */
  826.                             fprintf(js_include_file,"set_clock = function(num,type,diff){if(wims_status == \"done\"){return;};var name = eval(\"clocks\"+num);switch(type){case 1:name.H = parseInt(name.H+diff);break;case 2:name.M = parseInt(name.M+diff);break;case 3:name.S = parseInt(name.S+diff);break;default: break;};name = new clock(name.xc,name.yc,name.radius,name.H,name.M,name.S,name.type,name.interaction,name.H_color,name.M_color,name.S_color,name.bg_color,name.fg_color);};\n");
  827.                            }
  828.                            else
  829.                            {
  830.                             canvas_error("interactive clock may not be used together with other reply_types...");
  831.                            }
  832.                           }
  833.                           fprintf(stdout,"<p style=\"text-align:center\"><input style=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,1,1)\" value=\"H+\" /><input style=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,2,1)\" value=\"M+\" /><input style=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,3,1)\" value=\"S+\" /><br /><input style=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,1,-1)\" value=\"H&minus;\" /><input style=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,2,-1)\" value=\"M&minus;\" /><input style=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,3,-1)\" value=\"S&minus;\" /></p>",input_style,clock_cnt,input_style,clock_cnt,input_style,clock_cnt,input_style,clock_cnt,input_style,clock_cnt,input_style,clock_cnt);
  834.                     break;
  835.                     case 3:if(clock_cnt == 0){
  836.                             if( reply_format == 0 ){
  837.                              reply_format = 18; /* user sets clock */
  838.                              fprintf(js_include_file,"set_clock = function(num,type,diff){if(wims_status == \"done\"){return;};var name = eval(\"clocks\"+num);switch(type){case 1:name.H = parseInt(name.H+diff);break;case 2:name.M = parseInt(name.M+diff);break;case 3:name.S = parseInt(name.S+diff);break;default: break;};name = new clock(name.xc,name.yc,name.radius,name.H,name.M,name.S,name.type,1,name.H_color,name.M_color,name.S_color,name.bg_color,name.fg_color);};\n");
  839.                             }
  840.                             else
  841.                             {
  842.                              canvas_error("interactive clock may not be used together with other reply_types...");
  843.                             }
  844.                            }
  845.                             /*
  846.                             fprintf(stdout,"<p style=\"text-align:center\"><input style=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,1,1)\" value=\"H+\" /><input style=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,2,1)\" value=\"M+\" /><input style=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,3,1)\" value=\"S+\" /><br /><input style=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,1,-1)\" value=\"H&minus;\" /><input style=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,2,-1)\" value=\"M&minus;\" /><input style=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,3,-1)\" value=\"S&minus;\" /></p>",input_style,clock_cnt,input_style,clock_cnt,input_style,clock_cnt,input_style,clock_cnt,input_style,clock_cnt,input_style,clock_cnt);
  847.                            */
  848.                     break;
  849.                     case 2:if( reply_format == 0 ){
  850.                                 reply_format = 19; /* "onclick */
  851.                                 fprintf(js_include_file,"\n<!-- begin onclick handler for clocks -->\nvar reply = new Array();canvas_div.addEventListener( 'mousedown', user_click,false);\n\nfunction user_click(evt){if(evt.which == 1){var canvas_rect = clock_canvas.getBoundingClientRect();var x = evt.clientX - canvas_rect.left;var y = evt.clientY - canvas_rect.top;var p = 0;var name;var t = true;while(t){try{name = eval('clocks'+p);if( x < name.xc + name.radius && x > name.xc - name.radius ){if( y < name.yc + name.radius && y > name.yc - name.radius ){reply[0] = p;name = new clock(name.xc,name.yc,name.radius,name.H,name.M,name.S,name.type,name.interaction,name.H_color,name.M_color,name.S_color,\"lightblue\",name.fg_color);};}else{clock_ctx.clearRect(name.xc-name.radius,name.yc-name.radius,name.xc+name.radius,name.yc+name.radius);name = new clock(name.xc,name.yc,name.radius,name.H,name.M,name.S,name.type,name.interaction,name.H_color,name.M_color,name.S_color,name.bg_color,name.fg_color);};p++;}catch(e){t=false;};};};};\n");
  852.                             }
  853.                             else
  854.                             {
  855.                                 if( reply_format != 19){
  856.                                    canvas_error("clickable clock(s) may not be used together with other reply_types...");
  857.                                  }
  858.                             }
  859.                      break;
  860.                      default: canvas_error("interactive must be set 0,1 or 2");break;
  861.                 }
  862.                 break;
  863.                 case 8:
  864.                         if(clock_cnt == 0 ){ /* set opacity's just once .... it should be a argument to clock() , for now it's OK */
  865.                             fprintf(js_include_file,"var clock_bg_opacity = %.2f;var clock_fg_opacity = %.2f;",fill_opacity,stroke_opacity);
  866.                         }
  867.                         temp = get_string(infile,3);/* optional colors, like: ,,red,,blue*/
  868.                         if( strstr( temp,",") != 0 ){ temp = str_replace(temp,",","\",\""); }
  869.                         else{
  870.                         /* h_color,m_color,s_color,bg_color,fg_color */
  871.                         temp = ",black\",\"black\",\"black\",\"white\",\"black";}
  872.                         string_length = snprintf(NULL,0,"clocks%d = new clock(%d,%d,%d,%d,%d,%d,%d,%d,\"%s\");\n",clock_cnt,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],int_data[6],int_data[7],temp);
  873.                         check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  874.                         snprintf(tmp_buffer,string_length,"clocks%d = new clock(%d,%d,%d,%d,%d,%d,%d,%d,\"%s\");\n",clock_cnt,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],int_data[6],int_data[7],temp);
  875.                         add_to_buffer(tmp_buffer);
  876.                         fprintf(js_include_file,"var clocks%d;",clock_cnt);
  877.                         clock_cnt++;
  878.                         break;
  879.                 default:break;
  880.              }
  881.             }
  882.             break;
  883.  
  884.  
  885.         case COLORPALETTE:
  886.         /*
  887.          @ colorpalette color_name_1,color_name_2,...,color_name_8
  888.          @ opacity will be the same for all colors and is set by command <a href="#opacity">opacity [0-255],[0-255]</a>
  889.          @ can be used with command <a href='#userdraw'>'userdraw clickfill,color'</a> when more than one fillcolor is wanted.<br />in that case use for example <a href='#replyformat'>replyformat 10</a> ... reply=x1:y1:color1,x2:y2:color2...<br />the pupil can choose from the given colors by clicking small coloured buttons.<br /> the click coordinates and corresponding fillcolor will be stored in read_canvas()...when using the appropriate replyformat.<br />the first color of the palette is color=0
  890.          @ make sure to include the 'remove button' by using command <a href='#clearbutton'>clearbutton some_text</a>
  891.         */
  892.             if( use_tooltip == 1 ){canvas_error("command 'colorpalette' is incompatible with command 'intooltip tip_text'");}
  893.             fprintf(js_include_file,"var multifillcolors = [];var palettecolors = [");
  894.             while( ! done ){
  895.                 temp = get_color(infile,1);
  896.                 fprintf(js_include_file,"\"%s\",",temp);
  897.             }
  898.             fprintf(js_include_file,"];");/* add black to avoid trouble with dangling comma... */
  899.             add_color_palette(js_include_file,canvas_root_id,input_style);
  900.             break;
  901.        
  902.         case COPY:
  903.         /*
  904.         @ copy x,y,x1,y1,x2,y2,[filename URL]
  905.         @ The image may be "bitmap" or "SVG"
  906.         @ Insert the region from (x1,y1) to (x2,y2) (in pixels) of [filename] to (x,y) in x/y-range
  907.         @ If x1=y1=x2=y2=-1, the whole [filename URL] is copied.
  908.         @ [filename] is the URL of the image
  909.         @ URL is normal URL of network reachable image file location<br />(eg special url for 'classexo' not -yet- implemented)
  910.         @ if command <a href="#drag">'drag x/y/xy'</a> is set before command 'copy', the images will be draggable<br />javascript function read_canvas(); will return the x/y coordinate data in xrange/yrange of all -including non draggable- images<br />the command drag is only valid for the next image<br />draggable / non-draggable images may be mixed<br />may be used together with preceding keywords 'snaptogrid','xsnaptogrid','ysnaptogrid' or 'snaptopoints x1,y1,x2,y2...'
  911.         @ if keyword <a href="#onclick">'onclick'</a> is set before command 'copy' the image(s) is clickable (marked with a green rectangle around the image)<br />use 'read_dragdrop' to get the number of the clicked image(s)<br />use command 'clearbutton some_text' to reset the reply/click array.<br />example: 4 images; student clicked on image 2 and 3 : reply = 0,1,1,0<br />after clicking the clear button: reply = 0,0,0,0<br />May be mixed with commands 'drag x|y|xy' (use javascript read_canvas to get the new coordinates
  912.         @ 'onclick' for external images may be mixed with canvas generated stuff (like lines,curves etc)
  913.         @ you may draw / userdraw / drag other stuff on top of an "imported" image
  914.         @%copy%size 400,400%xrange -10,10%yrange -10,10%onclick%copy -5,5,-1,-1,-1,-1,https://wims.unice.fr/wims/gifs/fr.gif%onclick%copy 5,5,-1,-1,-1,-1,https://wims.unice.fr/wims/gifs/en.gif%onclick%copy 5,-5,-1,-1,-1,-1,https://wims.unice.fr/wims/gifs/it.gif%onclick%copy -5,-5,-1,-1,-1,-1,https://wims.unice.fr/wims/gifs/cn.gif
  915.         */
  916.             for(i = 0 ; i<7;i++){
  917.                 switch(i){
  918.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x left top corner in x/y range  */
  919.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y left top corner in x/y range */
  920.                     case 2: int_data[2]=(int)(get_real(infile,0));break;/* x1 in px of external image */
  921.                     case 3: int_data[3]=(int)(get_real(infile,0));break;/* y1 in px of external image */
  922.                     case 4: int_data[4]=(int)(get_real(infile,0));break;/* x2 --> width  */
  923.                     case 5: int_data[5]=(int)(get_real(infile,0)) ;break;/* y2 --> height */
  924.                     case 6: URL = get_string(infile,1);
  925.                             int_data[6] = int_data[4] - int_data[2];/* swidth & width (if not scaling )*/
  926.                             int_data[7] = int_data[5] - int_data[3];/* sheight & height (if not scaling )*/
  927.                             if( js_function[DRAW_EXTERNAL_IMAGE] != 1 ){ js_function[DRAW_EXTERNAL_IMAGE] = 1;}
  928.                             int_data[9] = click_cnt;
  929.                             if( drag_type > -1 ){/* e.g. we are dragging images x/y/xy */
  930.                                  if( reply_format == 0 ){ reply_format = 20; }
  931.                                  int_data[8] = 2;/* drag & drop */
  932.                             }
  933.                             else
  934.                             {
  935.                                 if( onclick == 1  ){
  936.                                     reply_format = 20;
  937.                                     int_data[8] = 1; /* onclick will be reset using 'void reset()'*/
  938.                                     click_cnt++; /* will also be used in dragstuff ! */
  939.                                 }
  940.                                 else
  941.                                 {
  942.                                     int_data[8] = 0; /* just static image */
  943.                                 }
  944.                             }
  945. /*
  946. function draw_external_image(URL,sx,sy,swidth,sheight,x0,y0,width,height,ext_img_cnt,resizable,draggable,click_cnt)
  947. */
  948.                             string_length = snprintf(NULL,0,  "draw_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,%d,0,%d,%d);\n",URL,int_data[2],int_data[3],int_data[6],int_data[7],int_data[0],int_data[1],int_data[6],int_data[7],ext_img_cnt,int_data[8],int_data[9]);
  949.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  950.                             snprintf(tmp_buffer,string_length,"draw_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,%d,0,%d,%d);\n",URL,int_data[2],int_data[3],int_data[6],int_data[7],int_data[0],int_data[1],int_data[6],int_data[7],ext_img_cnt,int_data[8],int_data[9]);
  951.                             drag_type = -1; /* reset the drag_type indicator */
  952.                             ext_img_cnt++;
  953.                             onclick=0;
  954.                             add_to_buffer(tmp_buffer);
  955.                             break;
  956.                     default: break;
  957.                 }
  958.             }
  959.             break;
  960. /*
  961. HTML5 specs:
  962. context.drawImage(img,sx,sy,swidth,sheight,x,y,width,height);
  963. img     Specifies the image, canvas, or video element to use
  964. sx      The x coordinate where to start clipping : x1 = int_data[0]
  965. sy      The y coordinate where to start clipping : x2 = int_data[1]
  966. swidth  The width of the clipped image : int_data[2] - int_data[0]
  967. sheight The height of the clipped image : int_data[3] - int_data[1]
  968. x       The x coordinate where to place the image on the canvas : dx1 = int_data[4]
  969. y       The y coordinate where to place the image on the canvas : dy1 = int_data[5]
  970. width   The width of the image to use (stretch or reduce the image) : dx2 - dx1 = int_data[6]
  971. height  The height of the image to use (stretch or reduce the image) : dy2 - dy1 = int_data[7]
  972. */
  973.         case COPYRESIZED:
  974.         /*
  975.         @ copyresized x1,y2,x2,y2,dx1,dy1,dx2,dy2,image_file_url
  976.         @ The image may be any "bitmap" or "SVG"
  977.         @ Insert the region from (x1,y1) to (x2,y2) (in pixels) of [ filename], <br />possibly resized,<br />to the region of (dx1,dy1) to (dx2,dy2) in x/y-range
  978.         @ (dx1:dy1) must be left top corner; (dx2 :dy2) must be right bottom corner of inserted image
  979.         @ If x1=y1=x2=y2=-1, the whole [filename / URL ] is copied and resized.
  980.         @ URL is normal URL of network reachable image file location<br />(as seen from public_html-root or network reachable 'http://some_server/my_images/test.gif'<br />(eg no special wims paths are searched !!)
  981.         @ if command <a href="#drag">'drag x/y/xy'</a> is set before command 'copy', the images will be draggable<br />javascript function read_canvas(); will return the x/y coordinate data in xrange/yrange of all -including non draggable- images<br />the command drag is only valid for the next image<br />draggable / non-draggable images may be mixed<br />may be used together with preceding keywords 'snaptogrid','xsnaptogrid','ysnaptogrid' or 'snaptopoints x1,y1,x2,y2...'
  982.         @ if keyword <a href="#onclick">'onclick'</a> is set before command 'copy' the image(s) is clickable (marked with a green rectangle around the image)<br />use 'read_dragdrop' to get the number of the clicked image(s)<br />use command 'clearbutton some_text' to reset the reply/click array.<br />example: 4 images; student clicked on image 2 and 3 : reply = 0,1,1,0<br />after clicking the clear button: reply = 0,0,0,0<br />May be mixed with commands 'drag x|y|xy' (use javascript read_canvas to get the new coordinates
  983.         @ 'onclick' for external images may be mixed with canvas generated stuff (like lines,curves etc)
  984.         @ you may draw / userdraw / drag stuff on top of an "imported" image
  985.         */
  986.             for(i = 0 ; i<9;i++){
  987.                 switch(i){
  988.                     case 0: int_data[0] = (int)(get_real(infile,0));break; /* x1 */
  989.                     case 1: int_data[1] = (int)(get_real(infile,0));break; /* y1 */
  990.                     case 2: int_data[2] = (int)(get_real(infile,0));break;/* x2 */
  991.                     case 3: int_data[3] = (int)(get_real(infile,0));break;/* y2 */
  992.                     case 4: int_data[4] = x2px(get_real(infile,0));break;/* dx1 */
  993.                     case 5: int_data[5] = y2px(get_real(infile,0));break;/* dy1 */
  994.                     case 6: int_data[6] = x2px(get_real(infile,0));break;/* dx2 */
  995.                     case 7: int_data[7] = y2px(get_real(infile,0));break;/* dy2 */
  996.                     case 8: URL = get_string(infile,1);
  997.                             /* flag error when wrong diagonal:  copyresized -1,-1,-1,-1,0,0,7,7,testfig.gif */
  998.                             if( int_data[7] < int_data[5] || int_data[6] < int_data[4]){
  999.                                 canvas_error("in copyresized , use:<br />left top corner (dx1:dy1) and right bottom corner (dx2:dy2) ! ");
  1000.                             }
  1001.                             int_data[2] = abs(int_data[2] - int_data[0]);/* swidth */
  1002.                             int_data[3] = abs(int_data[3] - int_data[1]);/* sheight */
  1003.                             int_data[6] = abs(int_data[6] - int_data[4]);/* width */
  1004.                             int_data[7] = abs(int_data[7] - int_data[5]);/* height */
  1005.                             if( js_function[DRAW_EXTERNAL_IMAGE] != 1 ){ js_function[DRAW_EXTERNAL_IMAGE] = 1;}
  1006.                             int_data[9] = click_cnt;
  1007.                             if( drag_type > -1 ){/* e.g. we are dragging images x/y/xy */
  1008.                                  if( reply_format == 0 ){ reply_format = 20; }
  1009.                                  int_data[8] = 2;/* drag & drop */
  1010.                             }
  1011.                             else
  1012.                             {
  1013.                                 if( onclick == 1  ){
  1014.                                     reply_format = 20;
  1015.                                     int_data[8] = 1; /* onclick will be reset using 'void reset()'*/
  1016.                                     click_cnt++; /* will also be used in dragstuff ! */
  1017.                                 }
  1018.                                 else
  1019.                                 {
  1020.                                     int_data[8] = 0; /* just static image */
  1021.                                 }
  1022.                             }
  1023. /*
  1024. (URL,sx,sy,swidth,sheight,x0,y0,width,height,idx,resizable,draggable,click_cnt)
  1025. URL,[2],[3],[6],    [7], [4],[5],[6],[7],ext_img_cnt,1,    [8],      [9]
  1026. */
  1027.                             string_length = snprintf(NULL,0,  "draw_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,%d,1,%d,%d);\n",URL,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],int_data[6],int_data[7],ext_img_cnt,int_data[8],int_data[9]);
  1028.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1029.                             snprintf(tmp_buffer,string_length,"draw_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,%d,1,%d,%d);\n",URL,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],int_data[6],int_data[7],ext_img_cnt,int_data[8],int_data[9]);
  1030.                             drag_type = -1; /* reset the drag_type indicator */
  1031.                             ext_img_cnt++;
  1032.                             onclick=0;
  1033.                             add_to_buffer(tmp_buffer);
  1034.                             break;
  1035.                     default: break;
  1036.                 }
  1037.             }
  1038.             break;
  1039.  
  1040.  
  1041.         case CROSSHAIR:
  1042.         /*
  1043.         @ crosshair x,y,color
  1044.         @ draw a single crosshair point at (x;y) in color 'color'
  1045.         @ use command 'crosshairsize int' and / or 'linewidth int'  to adust
  1046.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
  1047.         @%crosshair%size 400,400%xrange -10,10%yrange -10,10%opacity 255,255%linewidth 2%onclick%crosshair 0,0,red%linewidth 1%onclick%crosshair 1,1,blue%linewidth 3%onclick%crosshair 3,3,green%linewidth 4%xrosshair 4,4,orange
  1048.         */
  1049.             for(i=0;i<3;i++){
  1050.                 switch(i){
  1051.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  1052.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  1053.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  1054.                         decimals = find_number_of_digits(precision);
  1055.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,7,[%.*f],[%.*f],[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[1],crosshair_size,crosshair_size,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,0,0,0,use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  1056.                         if(onclick > 0){click_cnt++;}
  1057.                         /* click_cnt++ */
  1058.                         reset();
  1059.                         break;
  1060.                     default:break;
  1061.                 }
  1062.             }
  1063.             break;
  1064.  
  1065.         case CROSSHAIRS:
  1066.         /*
  1067.         @ crosshairs color,x1,y1,x2,y2,...,x_n,y_n
  1068.         @ draw multiple crosshair points at given coordinates in color 'color'
  1069.         @ use command 'crosshairsize int' and / or 'linewidth int'  to adust
  1070.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> individually (!)
  1071.         @%crosshairs_1%size 400,400%xrange -10,10%yrange -10,10%opacity 255,255%snaptogrid%linewidth 2%drag xy%crosshairs red,0,0,1,1,2,2,3,3%drag x%crosshairs blue,0,1,1,2,2,3,3,4
  1072.         @%crosshairs_2%size 400,400%xrange -10,10%yrange -10,10%opacity 255,255%linewidth 2%onclick%crosshairs red,0,0,1,1,2,2,3,3%onclick%crosshairs blue,0,1,1,2,2,3,3,4
  1073. */
  1074.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  1075.             fill_color = stroke_color;
  1076.             i=0;
  1077.             while( ! done ){     /* get next item until EOL*/
  1078.                 if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
  1079.                 if(i%2 == 0 ){
  1080.                     double_data[i] = get_real(infile,0); /* x */
  1081.                 }
  1082.                 else
  1083.                 {
  1084.                     double_data[i] = get_real(infile,1); /* y */
  1085.                 }
  1086.                 i++;
  1087.             }
  1088.             decimals = find_number_of_digits(precision);
  1089.             for(c=0 ; c < i-1 ; c = c+2){
  1090.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,7,[%.*f],[%.*f],[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[c],decimals,double_data[c+1],crosshair_size,crosshair_size,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,1,0,0,0,use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  1091.                 if(onclick > 0){click_cnt++;}
  1092.                 /* click_cnt++; */
  1093.             }
  1094.             reset();
  1095.             break;
  1096.  
  1097.         case CROSSHAIRSIZE:
  1098.         /*
  1099.         @ crosshairsize int
  1100.         @ default 8 (px)
  1101.         */
  1102.             crosshair_size = (int) (get_real(infile,1));
  1103.             break;
  1104.  
  1105.         case CURSOR:
  1106.         /*
  1107.         @ cursor 'some CSS cursor_style'
  1108.         @ alternative : pointer
  1109.         @ style can be any valid CSS property value, like crosshair,grabbing,move etc
  1110.         @ wims will not check the validity of your cursor declaration
  1111.         */
  1112.             fprintf(js_include_file,"canvas_div%d.style.cursor = \"%s\";",canvas_root_id,get_string(infile,1));
  1113.             break;
  1114.  
  1115.         case CURVE:
  1116.         /*
  1117.          @ curve color,formula(x)
  1118.          @ alernative : plot color,formula(x)
  1119.          @ use command <a href="#trange">trange</a> in parametric functions before command curve / plot  (trange -pi,pi)<br />curve color,formula1(t),formula2(t)
  1120.          @ use command <a href="#precision">"precision" </a>to ncrease the number of digits of the plotted points
  1121.          @ use command <a href="#plotsteps">"plotsteps"</a> to increase / decrease the amount of plotted points (default 150)
  1122.          @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
  1123.          @ if you need a plot beyond xrange / yrange, use <a href="#jsplot">"jsplot"'</a><br />(command "curve" will only calculate points within the xrange)
  1124.          @%curve%size 400,400%xrange -10,10%yrange -10,10%axis%axisnumbering%xlabel x-axis%ylabel y-axis%precision 1%grid 2,2,grey,2,2,6,grey%precision 1000%curve red,4*sqrt(x)%curve green,2*sqrt(abs(x)%curve blue,3*1/sqrt(x)%curve orange,4*sin(4/x)%dashed%curve red,4*cos(x)
  1125.         */
  1126.             if( use_parametric == TRUE ){ /* parametric color,fun1(t),fun2(t)*/
  1127.                 use_parametric = FALSE;
  1128.                 stroke_color = get_color(infile,0);
  1129.                 char *fun1 = get_string_argument(infile,0);
  1130.                 char *fun2 = get_string_argument(infile,1);
  1131.                 if( strlen(fun1) == 0 || strlen(fun2) == 0 ){canvas_error("parametric functions are NOT OK !");}
  1132.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,9,%s,[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,eval_parametric(xsize,ysize,fun1,fun2,xmin,xmax,ymin,ymax,tmin,tmax,plot_steps,precision),2*line_width,2*line_width,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  1133.             }
  1134.             else
  1135.             {
  1136.                 stroke_color = get_color(infile,0);
  1137.                 char *fun1 = get_string_argument(infile,1);
  1138.                 if( strlen(fun1) == 0 ){canvas_error("function is NOT OK !");}
  1139.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,9,%s,[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,eval(xsize,ysize,fun1,xmin,xmax,ymin,ymax,plot_steps,precision),line_width,line_width,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  1140.             }
  1141.             if(onclick > 0){click_cnt++;}
  1142.             /* click_cnt++; */
  1143.             reset();
  1144.             break;
  1145.  
  1146.         case DASHED:
  1147.         /*
  1148.         @ dashed
  1149.         @ keyword (no arguments required)
  1150.         @ next object will be drawn with a dashed line
  1151.         @ change dashing scheme by using command <a href="#dashtype">dashtype</a>
  1152.         @%dashed%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%line -5,-5,-5,5,red%dashtype 1,1%dline -4,-5,-4,5,green%dashtype 2,2%dline -3,-5,-3,5,blue%dashtype 3,3%dline 0,-5,0,5,orange%dashtype 4,4%dline 3,-5,3,5,brown
  1153.         */
  1154.             use_dashed = TRUE;
  1155.             break;
  1156.  
  1157.         case DASHTYPE:
  1158.         /*
  1159.         @ dashtype line_width_px,space_width_px
  1160.         @ every indiviual object may have its own dashtype, if needed...
  1161.         @ When keyword <a href='#dashed'>dashed</a> is set, the objects will be drawn with this dashtype
  1162.         @ default value "dashtype 2,2" e.g. 2px line and 2px space
  1163.         @ html5 canvas specification supports more arguments (dashing schemes) ... but not all modern browsers are yet capable
  1164.         */
  1165.             for(i=0;i<2;i++){
  1166.                 switch(i){
  1167.                     case 0 : dashtype[0] = (int) line_width*( get_real(infile,0)) ; break;
  1168.                     case 1 : dashtype[1] = (int) line_width*( get_real(infile,1)) ; break;
  1169.                 }
  1170.             }
  1171.         break;
  1172.  
  1173.         case DIAMONDFILL:
  1174.         /*
  1175.         @ diamondfill x0,y0,dx,dy,color
  1176.         @ x0,y0 in xrange / yrange
  1177.         @ distances dx,dy in pixels
  1178.         @ there is also a command <a href="userdraw">userdraw diamondfill,color</a>
  1179.         @%diamondfill%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%circles red,-4,0,6,4,0,6%linewidth 1%diamondfill 0,0,5,8,blue%diamondfill 0,7,8,8,lightgreen
  1180.         */
  1181.             if( js_function[DRAW_DIAMONDFILL] != 1 ){ js_function[DRAW_DIAMONDFILL] = 1;}
  1182.             if(js_function[DRAW_FILLTOBORDER] != 1 ){/* use only once */
  1183.              js_function[DRAW_FILLTOBORDER] = 1;
  1184.              add_js_filltoborder(js_include_file,canvas_root_id,canvas_type);
  1185.             }
  1186.             decimals = find_number_of_digits(precision);
  1187.             for(i=0;i<5;i++){
  1188.                 switch(i){
  1189.                     case 0: double_data[0] = get_real(infile,0); break; /* x */
  1190.                     case 1: double_data[1] = get_real(infile,0); break; /* y  */
  1191.                     case 2: int_data[0] = (int) (get_real(infile,0)); break; /* dx pixel */
  1192.                     case 3: int_data[1] = (int) (get_real(infile,0)); break; /* dy pixel*/
  1193.                     case 4: stroke_color = get_color(infile,1);
  1194.                     /* draw_hatchfill(ctx,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize) */
  1195.                     string_length = snprintf(NULL,0,  "draw_diamondfill(%d,%.*f,%.*f,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS+fill_cnt,decimals,double_data[0],decimals,double_data[1],int_data[0],int_data[1],line_width,stroke_color,stroke_opacity,xsize,ysize);
  1196.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1197.                     snprintf(tmp_buffer,string_length,"draw_diamondfill(%d,%.*f,%.*f,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS+fill_cnt,decimals,double_data[0],decimals,double_data[1],int_data[0],int_data[1],line_width,stroke_color,stroke_opacity,xsize,ysize);
  1198.                     add_to_buffer(tmp_buffer);
  1199.                     fill_cnt++;
  1200.                     break;
  1201.                     default:break;
  1202.                 }
  1203.             }
  1204.             reset();
  1205.         break;
  1206.  
  1207.         case DOTFILL:
  1208.         /*
  1209.         @ dotfill x0,y0,dx,dy,color
  1210.         @ x0,y0 in xrange / yrange
  1211.         @ distances dx,dy in pixels
  1212.         @ radius of dots is linewidth
  1213.         @ there is also a command <a href="userdraw">userdraw dotfill,color</a>
  1214.         @%dotfill%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%circles red,-4,0,6,4,0,6%dotfill 0,0,5,8,blue%dotfill 0,7,8,8,lightgreen
  1215.         */
  1216.             if( js_function[DRAW_DOTFILL] != 1 ){ js_function[DRAW_DOTFILL] = 1;}
  1217.             if(js_function[DRAW_FILLTOBORDER] != 1 ){/* use only once */
  1218.              js_function[DRAW_FILLTOBORDER] = 1;
  1219.              add_js_filltoborder(js_include_file,canvas_root_id,canvas_type);
  1220.             }
  1221.             decimals = find_number_of_digits(precision);
  1222.             for(i=0;i<5;i++){
  1223.                 switch(i){
  1224.                     case 0: double_data[0] = get_real(infile,0); break; /* x in px */
  1225.                     case 1: double_data[1] = get_real(infile,0); break; /* y in py */
  1226.                     case 2: int_data[0] = (int) (get_real(infile,0)); break; /* dx pixel */
  1227.                     case 3: int_data[1] = (int) (get_real(infile,0)); break; /* dy pixel*/
  1228.                     case 4: stroke_color = get_color(infile,1);
  1229.                     /* draw_dotfill(ctx,x0,y0,dx,dy,radius,color,opacity,xsize,ysize) */
  1230.                     string_length = snprintf(NULL,0,  "draw_dotfill(%d,%.*f,%.*f,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",FILL_CANVAS+fill_cnt,decimals,double_data[0],decimals,double_data[1],int_data[0],int_data[1],line_width,stroke_color,stroke_opacity,xsize,ysize);
  1231.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1232.                     snprintf(tmp_buffer,string_length,"draw_dotfill(%d,%.*f,%.*f,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",FILL_CANVAS+fill_cnt,decimals,double_data[0],decimals,double_data[1],int_data[0],int_data[1],line_width,stroke_color,stroke_opacity,xsize,ysize);
  1233.                     add_to_buffer(tmp_buffer);
  1234.                     fill_cnt++;
  1235.                     break;
  1236.                     default:break;
  1237.                 }
  1238.             }
  1239.             reset();
  1240.         break;
  1241.  
  1242.         case DRAG:
  1243.         /*
  1244.          @ drag [x][y][xy]
  1245.          @ the next object will be draggable in x / y / xy direction
  1246.          @ the displacement can be read by 'javascript:read_dragdrop();'
  1247.          @ the precision (default 2 decimals) in the student reply may be set with command <a href="#precision">'precision'.</a><br />Use this 'precision' command before this command 'drag x|y|xy' !
  1248.          @ 'onclick' and 'drag x|y|xy' may be combined (for different objects: a single object can either be onclick or drag , not both )
  1249.          @ 'multi_objects' will be numbered in the given x/y-sequence (example: points red,0,0,1,1,2,2,3,3 : point (0:0) is object_number 1)
  1250.          @ <b>attention</b>: static objects and 'onclick/drag' objects of the same type (like point,circle,etc) with the same coordinates (e.g. objects that overlap) will give problems in the 'recognition algorithm')<br />in this example<br /><em>linewidth 4<br />point 0,0,red<br />drag xy<br />point 0,0,blue<br /></em>the blue point will not be recognised as draggable !<br /><em>linewidth 4<br />drag xy<br />point 0,0,red<br />drag xy<br />point 0,0,blue<br /></em>both points will be recognised
  1251.          @ the answer is  : drag_or_onclick_object_number : Xorg : Yorg : Xnew : Ynew<br />wherein object_number is the sequence number of the draggable &amp; onclick objects in your script.<br />Only draggable & onclick objects will have an object_number (e.g things like point,crosshair,line,segment,circle,rect,triangle...etc)
  1252.          @ use keyword 'snaptogrid' , 'xsnaptogrid' , 'ysnaptogrid' or command 'snaptopoints x1,y1,x2,y2,...' to switch from free to discrete movement
  1253.          @ in case of external images (commands copy / copyresized) the external image can be set draggable ; always xy. <br />The function javascript;read_canvas() will return the xy-coordinates of all images.
  1254.          @ note: in case an object is dragged , zooming or panning will cause the coordinates to be reset to the original position :( <br />e.g. dragging / panning will get lost. (array with 'drag data' is erased)<br />This is a design flaw and not a feature !!
  1255.          @%drag_x%size 400,400%xrange -10,10%yrange -10,10%filled%fillcolor lightblue%opacity 200,40%drag x%linewidth 2%circles blue,-5,0,3,0,0,2,5,0,4,0,4,3,0,-3,4  
  1256.          @%drag_y%size 400,400%xrange -10,10%yrange -10,10%filled%fillcolor lightblue%opacity 200,40%drag y%linewidth 2%circles blue,-5,0,3,0,0,2,5,0,4,0,4,3,0,-3,4  
  1257.          @%drag_xy%size 400,400%xrange -10,10%yrange -10,10%filled%fillcolor lightblue%opacity 200,40%drag xy%linewidth 2%circles blue,-5,0,3,0,0,2,5,0,4,0,4,3,0,-3,4  
  1258.         */
  1259.             temp = get_string(infile,1);
  1260.             if(strstr(temp,"xy") != NULL ){
  1261.                 drag_type = 0;
  1262.             }
  1263.             else
  1264.             {
  1265.                 if(strstr(temp,"x") != NULL ){
  1266.                     drag_type = 1;
  1267.                 }
  1268.                 else
  1269.                 {
  1270.                     drag_type = 2;
  1271.                 }
  1272.             }
  1273.             /* assuming all drag&drop coordinates the same precision: so set only once */
  1274.             if( print_drag_params_only_once == FALSE ){
  1275.              fprintf(js_include_file,"dragdrop_precision = %d;use_dragdrop_reply = true;\n",precision);
  1276.              print_drag_params_only_once = TRUE;
  1277.             }
  1278.             onclick = 2;
  1279.             /* if(use_userdraw == TRUE ){canvas_error("\"drag & drop\" may not be combined with \"userdraw\" or \"pan and zoom\" \n");} */
  1280.             break;
  1281.  
  1282.         case ELLIPSE:
  1283.         /*
  1284.         @ ellipse xc,yc,radius_x,radius_y,color
  1285.         @ a ellipse with center xc/yc in x/y-range
  1286.         @ radius_x and radius_y are in pixels
  1287.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
  1288.         @ will shrink / expand on zoom out / zoom in
  1289.         */
  1290.             for(i=0;i<5;i++){
  1291.                 switch(i){
  1292.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  1293.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  1294.                     case 2:double_data[2] = get_real(infile,0);break; /* rx -> px  */
  1295.                     case 3:double_data[3] = get_real(infile,0);break; /* ry -> px  */
  1296.                     case 4:stroke_color = get_color(infile,1);/* name or hex color */
  1297.                         decimals = find_number_of_digits(precision);
  1298.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,3,[%.*f],[%.*f],[%.*f],[%.*f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[1],decimals,double_data[2],decimals,double_data[3],line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  1299.                         if(onclick > 0){click_cnt++;}
  1300.                         /* click_cnt++; */
  1301.                         reset();
  1302.                     break;
  1303.                 }
  1304.             }
  1305.             break;
  1306.            
  1307.         case ELLIPSES:
  1308.         /*
  1309.         @ ellipses color,xc1,yc1,radius_x1,radius_y1,xc2,yc2,radius_x2,radius_y2,xc3,yc3,radius_x3,radius_y3,...
  1310.         @ a ellipses with center xc/yc in x/y-range
  1311.         @ radius_x and radius_y are in pixels
  1312.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
  1313.         @ will shrink / expand on zoom out / zoom in
  1314.         @%ellipses%size 400,400%xrange -10,10%yrange -10,10%filled%fillcolor orange%opacity 200,40%ellipses red,-3,0,2,4,0,0,4,2,3,0,6,2
  1315.         */
  1316.            
  1317.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  1318.             fill_color = stroke_color;
  1319.             i=1;
  1320.             while( ! done ){     /* get next item until EOL*/
  1321.                 if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
  1322.                 switch (i%4){
  1323.                  case 1:double_data[i-1] = get_real(infile,0);break; /* x */
  1324.                  case 2:double_data[i-1] = get_real(infile,0);break; /* y */
  1325.                  case 3:double_data[i-1] = get_real(infile,0);break; /* rx */
  1326.                  case 0:double_data[i-1] = get_real(infile,1);break; /* ry */
  1327.                  default: break;
  1328.                 }
  1329.                 i++;
  1330.             }
  1331.             decimals = find_number_of_digits(precision);
  1332.             for(c = 0 ; c < i-1 ; c = c+4){
  1333.              fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,3,[%.*f],[%.*f],[%.*f],[%.*f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n", click_cnt,onclick,drag_type,decimals,double_data[c],decimals,double_data[c+1],decimals,double_data[c+2],decimals,double_data[c+3],line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  1334.              if(onclick > 0){click_cnt++;} /* click_cnt++; */
  1335.             }
  1336.             reset();
  1337.             break;
  1338.  
  1339.         case FILLALL:
  1340.         /*
  1341.         @ fillall color,x1,y1,x2,y2...x_n,y_n
  1342.         @ fill all region containing points (x1:y1),(x2:y2)...(x_n:y_n) with color 'color'
  1343.         @ any other colors (objects) in the <a href="#canvastype>canvastype</a> will act as border to the bucket fill
  1344.         @ use this command  after all boundary objects are declared.
  1345.         @ Use command 'userdraw clickfill,color' for user click driven flood fill.
  1346.         @ use command <a href="#canvastype">canvastype </a> to fill another canvas (default should be fine: DRAG_CANVAS = 5)
  1347.         @ note: the fill-family of commands are very (client) cpu intensive operations!<br />filling is done pixel by pixel<br/>e.g. image size of 400x400 uses 160000 pixels : each pixel contains 4 data (R,G,B,Opacity) = 640000 data.<br />on every data a few operations / comparisons are done...<br />So have pity on your students CPU..
  1348.         @%fillall%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%vlines black,-5,0,-5,0,-4,0,-4,0,3,0,3,0%hlines black,-5,0,-5,0,-5,4,-5,4,-5,-2,-5,-2%circles green,0,0,2,3,3,5,-5,-5,3%opacity 240,50%fillall blue,1,1,8,8,-8,-8
  1349.         */
  1350.             decimals = find_number_of_digits(precision);
  1351.             fill_color=get_color(infile,0); /* how nice: now the color comes first...*/
  1352.             i=0;
  1353.             if(js_function[DRAW_FILLTOBORDER] != 1 ){/* use only once */
  1354.              js_function[DRAW_FILLTOBORDER] = 1;
  1355.              add_js_filltoborder(js_include_file,canvas_root_id,canvas_type);
  1356.             }
  1357.             while( ! done ){     /* get next item until EOL*/
  1358.                 if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
  1359.                 if(i%2 == 0 ){
  1360.                     double_data[i] = get_real(infile,0); /* x */
  1361.                 }
  1362.                 else
  1363.                 {
  1364.                     double_data[i] = get_real(infile,1); /* y */
  1365.                     string_length = snprintf(NULL,0,  "setTimeout(function(){filltoborder(%.*f,%.*f,[%s,%d],[%s,%d],%d,false,null);},1000);\n",decimals,double_data[i-1],decimals,double_data[i],fill_color,(int) (fill_opacity/0.0039215),fill_color,(int) (fill_opacity/0.0039215),FILL_CANVAS+fill_cnt);
  1366.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1367.                     snprintf(tmp_buffer,string_length,"setTimeout(function(){filltoborder(%.*f,%.*f,[%s,%d],[%s,%d],%d,false,null);},1000);\n",decimals,double_data[i-1],decimals,double_data[i],fill_color,(int) (fill_opacity/0.0039215),fill_color,(int) (fill_opacity/0.0039215),FILL_CANVAS+fill_cnt);
  1368.                     add_to_buffer(tmp_buffer);
  1369.                     fill_cnt++;
  1370.                 }
  1371.                 i++;
  1372.             }
  1373.         break;
  1374.  
  1375.         case FILLED:
  1376.         /*
  1377.         @ filled
  1378.         @ keyword (no arguments required)
  1379.         @ the next 'fillable' object (only the next !) will be filled
  1380.         @ use command <a href="fillcolor">"fillcolor color"</a> to set fillcolor
  1381.         @ use <a href="#fillpattern">fillpattern</a> for non-solid color filling.
  1382.         @ use command "opacity 0-255,0-255" to set stroke and fill-opacity
  1383.         @ use command "fill x,y,color" or "floodfill x,y,color" to fill the space around (x;y) with color <br />pixel operation implemented in javascript: use with care !
  1384.         */
  1385.             use_filled = 1;
  1386.             use_pattern = 0;
  1387.             break;
  1388.  
  1389.         case FILLCOLOR:
  1390.         /*
  1391.         @ fillcolor colorname or #hex
  1392.         @ set the color : mainly used for command 'userdraw obj,stroke_color'
  1393.         @ all fillable massive objects will have a fillcolor == strokecolor (just to be compatible with flydraw...)
  1394.         @ see <a href="#fillpattern">fillpattern</a> for non-solid color filling.
  1395.         */
  1396.             fill_color = get_color(infile,1);
  1397.             use_pattern = 0;
  1398.             break;
  1399.  
  1400.         case FILLPATTERN:
  1401.         /*
  1402.         @ fillpattern grid | hatch | diamond | dot | image-url
  1403.         @ use a pattern as fillstyle
  1404.         @ suitable for all fillable object including the <a href="#userdraw">'userdraw objects' family</a>
  1405.         @ noy -yet- implemented in the <a href="#multidraw">multidraw objects family</a>...(will probably be too complex)
  1406.         @ the fillcolor is set by the object command, for example:<br />size 370,370<br />xrange -5,5<br />yrange -5,5<br />opacity 165,150<br />fillpattern grid<br />fcircle -6,3,160,blue<br />fillpattern dot<br />fcircle -3,-3,160,red<br />fillpattern hatch<br />fcircle 0,3,160,green<br />filpattern diamond<br />fcircle 3,-3,160,cyan<br />userdraw dotfill,blue<br />zoom red<br />
  1407.         @ the pattern dimensions are hardcoded (linewidth ,radius,dx,dy are fixed)
  1408.         @ the pattern color is set by command <a href='#fillcolor'>fillcolor</a> and <a href='#opacity'>opacity</a>
  1409.         @ see <a href="#fillcolor">fillcolor</a> for solid color filling.
  1410.         @ when using an image-url , make sure it contains an '/' in the filename...'fillpattern $$module_dir/gifs/test.jpg' will fill the next fillable object with this image.|<br />the argument to html5 canvas routine 'createPattern(img,argument)' is set to 'repeat'<br />e.g. if the image is smaller then the canvas, multiple copies will be used to fill the area ( e.g. ctx.fillStyle() = pattern)<br />for example:<br />size 150,150<br />xrange -5,5<br />yrange -5,5<br />drag xy<br />fillpattern gifs/en.gif<br />fcircle 0,0,100,red<br />fillpattern gifs/nl.gif<br />drag xy<br />fcircle -3,2,100,green<br />fillpattern gifs/cn.gif<br />drag xy<br />fcircle 3,2,100,green<br />
  1411.         @ fillpattern is also active for <a href="#userdraw">userdraw object,color"</a>...<br />the userdraw family a has also 'clickfill type' (e.g. an object gets filled between boundaries, when clicked) commands like:<br />'userdraw dotfill,color'<br />'userdraw hatchfill,color' etc
  1412.         @%fillpattern%size 400,400%xrange -5,5%yrange -5,5%opacity 165,150%fillpattern grid%fcircle -6,3,160,blue%fillpattern dot%fcircle -3,-3,160,red%fillpattern hatch%fcircle 0,3,160,green%filpattern diamond%fcircle 3,-3,160,cyan%zoom red
  1413.         */
  1414.             temp = get_string(infile,1);
  1415.             if( strstr(temp,"grid") != 0 ){ use_pattern = 2;use_filled = 2;} /* use_pattern is used in dragstuff library */
  1416.             else
  1417.             if( strstr(temp,"hatch") != 0 ){ use_pattern = 3;use_filled = 3;}
  1418.             else
  1419.             if( strstr(temp,"diamond") != 0 ){ use_pattern = 4;use_filled = 4;}
  1420.             else
  1421.             if( strstr(temp,"dot") != 0 ){ use_pattern = 5;use_filled = 5;}
  1422.             else
  1423.             if( strstr(temp,"/") != 0 ){ use_pattern = 6;use_filled = 0;if( js_function[ADD_LOAD_IMAGE] != 1 ){ js_function[ADD_LOAD_IMAGE] = 1; add_js_load_image(js_include_file,canvas_root_id);} fprintf(js_include_file,"get_image_from_url(\"%s\"); ",temp); }
  1424.             else
  1425.             canvas_error("fillpattern unknown or typo...choose grid,hatch,diamond of dot...");     
  1426.             break;
  1427.         case FILLTOBORDER:
  1428.         /*
  1429.         @ filltoborder x,y,bordercolor,color
  1430.         @ fill the region  of point (x:y)  with color 'color'
  1431.         @ any other color will not act as border to the bucket fill
  1432.         @ use this command  after all boundary objects are declared.
  1433.         @ use command <a href="#canvastype">canvastype </a> to fill another canvas (default should be fine: DRAG_CANVAS = 5)
  1434.         @ note: filltoborder is a very (client) cpu intensive operation!<br />filling is done pixel by pixel<br/>e.g. image size of 400x400 uses 160000 pixels : each pixel contains 4 data (R,G,B,Opacity) = 640000 data.<br />on every data a few operations / comparisons are done...<br />So have pity on your students CPU..
  1435.         @ maybe used together with command <a href="#userdraw">userdraw clickfill,color</a>
  1436.         @%filltoborder%size 400,400%xrange -10,10%yrange -10,10%canvastype 100%linewidth 2%precision 1000%jsplot blue,5*sin(x)%opacity 200,50%filltoborder 6,6,blue,blue%filltoborder 6,-6,blue,red
  1437.         */
  1438.             for(i=0 ;i < 4 ; i++){
  1439.                 switch(i){
  1440.                     case 0:double_data[0] = get_real(infile,0);break;
  1441.                     case 1:double_data[1] = get_real(infile,0);break;
  1442.                     case 2:bgcolor = get_color(infile,0);break;
  1443.                     case 3:fill_color = get_color(infile,1);
  1444.                            if(js_function[DRAW_FILLTOBORDER] != 1 ){/* use only once */
  1445.                                 js_function[DRAW_FILLTOBORDER] = 1;
  1446.                                 add_js_filltoborder(js_include_file,canvas_root_id,canvas_type);
  1447.                            }
  1448.                            decimals = find_number_of_digits(precision);
  1449.                            /* we need to set a timeout: the canvas is not yet draw in memory? when floodfill is called directly... */
  1450.                            string_length = snprintf(NULL,0,  "setTimeout(function(){filltoborder(%.*f,%.*f,[%s,%d],[%s,%d],%d,false,null);},1000);\n",decimals,double_data[0],decimals,double_data[1],bgcolor,(int) (fill_opacity/0.0039215),fill_color,(int) (fill_opacity/0.0039215),FILL_CANVAS+fill_cnt);
  1451.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1452.                            snprintf(tmp_buffer,string_length,"setTimeout(function(){filltoborder(%.*f,%.*f,[%s,%d],[%s,%d],%d,false,null);},1000);\n",decimals,double_data[0],decimals,double_data[1],bgcolor,(int) (fill_opacity/0.0039215),fill_color,(int) (fill_opacity/0.0039215),FILL_CANVAS+fill_cnt);
  1453.                            add_to_buffer(tmp_buffer);
  1454.                            fill_cnt++;
  1455.                            break;
  1456.                     default:break;
  1457.                 }
  1458.             }
  1459.             reset();
  1460.         break;
  1461.         case FLOODFILL:
  1462.         /*
  1463.         @ floodfill x,y,color
  1464.         @ alternative : fill x,y,color
  1465.         @ fill the region of point (x:y) with color 'color'
  1466.         @ any other color or size of picture (borders of picture) will act as border to the bucket fill
  1467.         @ use this command  after all boundary objects are declared.
  1468.         @ Use command 'userdraw clickfill,color' for user click driven flood fill.
  1469.         @ use command <a href="#canvastype">canvastype </a> to fill another canvas (default should be fine: DRAG_CANVAS = 5)
  1470.         @ note: floodfill is a very (client) cpu intensive operation!<br />filling is done pixel by pixel<br/>e.g. image size of 400x400 uses 160000 pixels : each pixel contains 4 data (R,G,B,Opacity) = 640000 data.<br />on every data a few operations / comparisons are done...<br />So have pity on your students CPU..
  1471.         @%floodfill%size 400,400%xrange -10,10%yrange -10,10%canvastype 100%linewidth 2%precision 1000%jsplot blue,5*sin(x)%opacity 200,50%floodfill 6,6,blue%floodfill 6,-6,red
  1472.         */
  1473.             for(i=0 ;i < 4 ; i++){
  1474.                 switch(i){
  1475.                     case 0:double_data[0] = get_real(infile,0);break;
  1476.                     case 1:double_data[1] = get_real(infile,0);break;
  1477.                     case 2:fill_color = get_color(infile,1);
  1478.                            if(js_function[DRAW_FILLTOBORDER] != 1 ){/* use only once */
  1479.                                 js_function[DRAW_FILLTOBORDER] = 1;
  1480.                                 add_js_filltoborder(js_include_file,canvas_root_id,canvas_type);
  1481.                            }
  1482.                            decimals = find_number_of_digits(precision);
  1483.                            /* we need to set a timeout: the canvas is not yet draw in memory? when floodfill is called directly... */
  1484.                            string_length = snprintf(NULL,0,  "setTimeout(function(){filltoborder(%.*f,%.*f,[%s,%d],[%s,%d],%d,false,null);},1000);\n",decimals,double_data[0],decimals,double_data[1],fill_color,(int) (fill_opacity/0.0039215),fill_color,(int) (fill_opacity/0.0039215),FILL_CANVAS+fill_cnt);
  1485.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1486.                            snprintf(tmp_buffer,string_length,"setTimeout(function(){filltoborder(%.*f,%.*f,[%s,%d],[%s,%d],%d,false,null);},1000);\n",decimals,double_data[0],decimals,double_data[1],fill_color,(int) (fill_opacity/0.0039215),fill_color,(int) (fill_opacity/0.0039215),FILL_CANVAS+fill_cnt);
  1487.                            add_to_buffer(tmp_buffer);
  1488.                            fill_cnt++;
  1489.                            break;
  1490.                     default:break;
  1491.                 }
  1492.             }
  1493.             reset();
  1494.         break;
  1495.  
  1496.         case FONTCOLOR:
  1497.         /*
  1498.          @ fontcolor color
  1499.          @ color: hexcolor or colorname
  1500.          @ default: black
  1501.          @ example usage: x/y-axis text
  1502.         */
  1503.             font_color = get_color(infile,1);
  1504.             break;
  1505.  
  1506.         case FONTFAMILY:
  1507.         /*
  1508.          @ fontfamily font_description
  1509.          @ set the font family; for browsers that support it
  1510.          @ font_description: Ariel ,Courier, Helvetica etc
  1511.          @ in case commands<br /> 'string color,x,y,the string'<br /> 'stringup color,x,y,rotation,the string'<br />fontfamily can be something like:<br />italic 34pt Ariel
  1512.          @ use correct syntax : 'font style' 'font size'pt 'fontfamily'
  1513.         */
  1514.             font_family = get_string(infile,1);
  1515.             break;
  1516.  
  1517.         case FONTSIZE:
  1518.         /*
  1519.          @ fontsize font_size
  1520.          @ default value 12
  1521.          @ note:for some macro's (like grid | legend | xaxistext | xlabel etc) sometimes command <a href="#fontfamily">"fontfamily"</a> can be used for some specific font-setting<br />this is however not always very straight forward...so just try and see what happens
  1522.         */
  1523.             font_size = (int) (get_real(infile,1));
  1524.             break;
  1525.  
  1526.         case FUNCTION_LABEL:
  1527.         /*
  1528.          @ functionlabel 'some string'
  1529.          @ default value "f(x)="
  1530.          @ no mathml allowed (just ascii string)
  1531.          @ use command 'fontsize int' to adjust the size
  1532.          @ use command 'strokecolor colorname' to adjust the labels (individually, if needed)
  1533.          @ if needed, use before every command 'userinput function | inputfield | textarea'
  1534.         */
  1535.             function_label = get_string_argument(infile,1);
  1536.             break;
  1537.  
  1538.         case GRID:/* xmajor,ymajor,gridcolor [,xminor,yminor,tick length (px) ,axis/tickscolor]*/
  1539.         /*
  1540.          @ grid step_x,step_y,gridcolor
  1541.          @ if keywords <a href="#axis">"axis"</a> or <a href="#axisnumbering">"axisnumbering"</a> are set, use :<br />grid step_x,step_y,major_color,minor_x,minor_y,tics height in px,axis_color<br />minor x step = step_x / minor_x
  1542.          @ in that case, use command <a href="#fontcolor">"fontcolor"</a>, <a href="#fontsize">"fontsize"</a> and / or <a href="#fontfamily">"fontfamily"</a> to adjust font <br />defaults: black,12,Ariel
  1543.          @ if xmin > 0 and/or ymin > 0 and zooming / panning is not activ: <br /> be aware that the x/y-axis numbering and x/y major/minor tic marks will not be visual <br /> as they are placed under the x-axis and left to the y-axis (in Quadrant II and IV)
  1544.          @ can <b>not</b> be set <a href="#onclick">"onclick"</a> or <a href="#drag">"drag xy"</a>
  1545.          @ use commands <a href="#xlabel">'xlabel some_string'</a> and/or <a href="#ylabel">'ylabel some_string'</a> to label axis;<br />use command "fontsize" to adjust size:the font family is non-configurable 'italic your_fontsize px Ariel' !
  1546.          @ see commands (see <a href="#xaxis">"xaxis" or xaxistext"</a>, <a href="#yaxis">"yaxis" or "yaxistext"</a> to set tailormade values on axis (the used font is set by <a href="fontfamily">command fontfamily</a>; default '12px Ariel')
  1547.          @ see command <a href="#legend">"legend"</a>to set a legend for the graph ;<br />use command <a href="#fontsize">"fontsize"</a> to adjust size (the font family is non-configurable 'bold your_fontsize px Ariel')
  1548.          @%grid%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%zoom red
  1549.          @%grid_axis%size 400,400%xrange -10,10%yrange -10,10%axis%grid 1,1,grey,2,2,6,black%zoom red
  1550.          @%grid_axisnumbering%size 400,400%xrange -10,10%yrange -10,10%axisnumbering%precision 0%grid 1,1,grey,2,2,6,black%zoom red
  1551.          @%grid_axis_axisnumbering%size 400,400%xrange -10,10%yrange -10,10%axis%axisnumbering%precision 0%grid 1,1,grey,2,2,6,black%zoom red
  1552.         */
  1553.             if( js_function[DRAW_YLOGSCALE] == 1 ){canvas_error("only one grid type is allowed...");}
  1554.             if( js_function[DRAW_GRID] != 1 ){ js_function[DRAW_GRID] = 1;}
  1555.             for(i=0;i<4;i++){
  1556.                 switch(i){
  1557.                     case 0:double_data[0] = get_real(infile,0);break;/* xmajor */
  1558.                     case 1:double_data[1] = get_real(infile,0);break;/* ymajor */
  1559.                     case 2:
  1560.                     if( use_axis == TRUE ){
  1561.                         stroke_color = get_color(infile,0);
  1562.                         done = FALSE;
  1563.                         int_data[0] = (int) (get_real(infile,0));/* xminor */
  1564.                         int_data[1] = (int) (get_real(infile,0));/* yminor */
  1565.                         int_data[2] = (int) (get_real(infile,0));/* tic_length */
  1566.                         fill_color = get_color(infile,1); /* used as axis_color*/
  1567.                     }
  1568.                     else
  1569.                     {
  1570.                         int_data[0] = 1;
  1571.                         int_data[1] = 1;
  1572.                         stroke_color = get_color(infile,1);
  1573.                         fill_color = stroke_color;
  1574.                     }
  1575.                     if( double_data[0] <= 0 ||  double_data[1] <= 0 ||  int_data[0] <= 0 ||  int_data[1] <= 0 ){canvas_error("major or minor ticks must be positive !");}
  1576.                     /* set snap_x snap_y values in pixels */
  1577.                     fprintf(js_include_file,"snap_x = %f;snap_y = %f;",double_data[0] / int_data[0],double_data[1] / int_data[1]);
  1578.                     string_length = snprintf(NULL,0,  ";draw_grid%d(%d,%d,%.2f,%.*f,%.*f,%d,%d,%d,%d,\"%s\",\"%s\",%d,\"%s\",%d,%d,%d,%.2f,%d,%s,%d,%d,%d,\"%s\",%.2f);\n ",canvas_root_id,GRID_CANVAS,precision,stroke_opacity,decimals,double_data[0],decimals,double_data[1],int_data[0],int_data[1],int_data[2],line_width,stroke_color,fill_color,font_size,font_family,use_axis,use_axis_numbering,use_rotate,angle,use_affine,affine_matrix,use_dashed,dashtype[0],dashtype[1],font_color,fill_opacity);
  1579.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1580.                     snprintf(tmp_buffer,string_length,";draw_grid%d(%d,%d,%.2f,%.*f,%.*f,%d,%d,%d,%d,\"%s\",\"%s\",%d,\"%s\",%d,%d,%d,%.2f,%d,%s,%d,%d,%d,\"%s\",%.2f);\n ",canvas_root_id,GRID_CANVAS,precision,stroke_opacity,decimals,double_data[0],decimals,double_data[1],int_data[0],int_data[1],int_data[2],line_width,stroke_color,fill_color,font_size,font_family,use_axis,use_axis_numbering,use_rotate,angle,use_affine,affine_matrix,use_dashed,dashtype[0],dashtype[1],font_color,fill_opacity);
  1581.                     add_to_buffer(tmp_buffer);
  1582.                     break;
  1583.                 }
  1584.             }
  1585.             reset();
  1586.             break;
  1587.         case GRIDFILL:
  1588.         /*
  1589.         @ gridfill x0,y0,dx,dy,color
  1590.         @ x0,y0 in xrange / yrange
  1591.         @ distances dx,dy in pixels
  1592.         @ there is also a command <a href="userdraw">userdraw gridfill,color</a>
  1593.         @%gridfill%size 400,400%xrange -10,10%yrange -10,10%canvastype 100%linewidth 2%precision 1000%jsplot blue,5*sin(x)%opacity 200,50%gridfill 6,6,10,10,blue%gridfill 6,-6,6,6,red
  1594.  
  1595.         */
  1596.             if( js_function[DRAW_GRIDFILL] != 1 ){ js_function[DRAW_GRIDFILL] = 1;}
  1597.             decimals = find_number_of_digits(precision);
  1598.             if(js_function[DRAW_FILLTOBORDER] != 1 ){/* use only once */
  1599.              js_function[DRAW_FILLTOBORDER] = 1;
  1600.              add_js_filltoborder(js_include_file,canvas_root_id,canvas_type);
  1601.             }
  1602.             for(i=0;i<5;i++){
  1603.                 switch(i){
  1604.                     case 0: double_data[0] = get_real(infile,0); break; /* x  */
  1605.                     case 1: double_data[1] = get_real(infile,0); break; /* y  */
  1606.                     case 2: int_data[0] = (int) (get_real(infile,0)); break; /* dx pixel */
  1607.                     case 3: int_data[1] = (int) (get_real(infile,0)); break; /* dy pixel*/
  1608.                     case 4: stroke_color = get_color(infile,1);
  1609.                     string_length = snprintf(NULL,0,  "draw_gridfill(%d,%.*f,%.*f,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS+fill_cnt,decimals,double_data[0],decimals,double_data[1],int_data[0],int_data[1],line_width,stroke_color,stroke_opacity,xsize,ysize);
  1610.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1611.                     snprintf(tmp_buffer,string_length,"draw_gridfill(%d,%.*f,%.*f,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS+fill_cnt,decimals,double_data[0],decimals,double_data[1],int_data[0],int_data[1],line_width,stroke_color,stroke_opacity,xsize,ysize);
  1612.                     add_to_buffer(tmp_buffer);
  1613.                     fill_cnt++;
  1614.                     break;
  1615.                     default:break;
  1616.                 }
  1617.             }
  1618.             reset();
  1619.         break;
  1620.  
  1621.         case HALFLINE:
  1622.         /*
  1623.         @ demiline x1,y1,x2,y2,color
  1624.         @ alternative : halfline
  1625.         @ draws a halfline starting in (x1:y1) and through (x2:y2) in color 'color' (colorname or hex)
  1626.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
  1627.         @%halfline%size 400,400%xrange -10,10%yrange -10,10%halfline -5,5,0,0,red%halfline -5,-5,0,0,blue
  1628.         */
  1629.             for(i=0;i<5;i++){
  1630.                 switch(i){
  1631.                     case 0: double_data[0]= get_real(infile,0);break; /* x-values */
  1632.                     case 1: double_data[1]= get_real(infile,0);break; /* y-values */
  1633.                     case 2: double_data[10]= get_real(infile,0);break; /* x-values */
  1634.                     case 3: double_data[11]= get_real(infile,0);break; /* y-values */
  1635.                     case 4: stroke_color=get_color(infile,1);/* name or hex color */
  1636.                     if(double_data[0] == double_data[10]){ /* vertical halfline */
  1637.                         if(double_data[1] < double_data[11]){
  1638.                          double_data[3] = ymax + 1000;
  1639.                         }
  1640.                         else
  1641.                         {
  1642.                          double_data[3] = ymin - 1000;
  1643.                         }
  1644.                         double_data[2] = double_data[0];
  1645.                     }
  1646.                     else
  1647.                     { /* horizontal halfline*/
  1648.                      if( double_data[1] == double_data[11] ){
  1649.                       if( double_data[0] < double_data[10] ){
  1650.                         double_data[2] = xmax + 1000; /* halfline to the right */
  1651.                       }
  1652.                       else
  1653.                       {
  1654.                         double_data[2] = xmin - 1000; /* halfline to the left */
  1655.                       }
  1656.                       double_data[3] = double_data[1];
  1657.                      }
  1658.                      else
  1659.                      {
  1660.                       /* any other halfline */
  1661.                       /* slope */
  1662.                       double_data[12] = (double_data[11] - double_data[1])/(double_data[10] - double_data[0]);
  1663.                       /* const */
  1664.                       double_data[13] = double_data[1] - double_data[12]*double_data[0];
  1665.                       if( double_data[0] < double_data[10] ){
  1666.                        double_data[2] = double_data[2] + 1000;
  1667.                       }
  1668.                       else
  1669.                       {
  1670.                        double_data[2] = double_data[2] - 1000;
  1671.                       }
  1672.                       double_data[3] = double_data[12]*double_data[2] + double_data[13];
  1673.                      }
  1674.                     }
  1675.                     fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,18,[%.*f,%.*f],[%.*f,%.*f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[2],decimals,double_data[1],decimals,double_data[3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  1676.                     if(onclick > 0){click_cnt++;}
  1677.                     /* click_cnt++; */
  1678.                     reset();
  1679.                     break;
  1680.                 }
  1681.             }
  1682.             break;
  1683.  
  1684.         case HALFLINES:
  1685.         /*
  1686.         @ demilines color,x1,y1,x2,y2,....
  1687.         @ alternative : halflines
  1688.         @ draws halflines starting in (x1:y1) and through (x2:y2) in color 'color' (colorname or hex) etc etc
  1689.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> indiviually
  1690.         @%halflines%size 400,400%xrange -10,10%yrange -10,10%halflines red,-5,5,0,0,-5,-5,0,0
  1691.         */
  1692.             stroke_color=get_color(infile,0);
  1693.             fill_color = stroke_color;
  1694.             i=0;
  1695.             while( ! done ){     /* get next item until EOL*/
  1696.                 if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
  1697.                 if(i%2 == 0 ){
  1698.                     double_data[i] = get_real(infile,0); /* x */
  1699.                 }
  1700.                 else
  1701.                 {
  1702.                     double_data[i] = get_real(infile,1); /* y */
  1703.                 }
  1704.                 i++;
  1705.             }
  1706.             decimals = find_number_of_digits(precision);
  1707.             for(c = 0 ; c < i-1 ; c = c+4){
  1708.                 if( double_data[c] == double_data[c+2] ){ /* vertical line*/
  1709.                     if(double_data[c+1] < double_data[c+3]){ /* upright halfline */
  1710.                         double_data[c+3] = ymax + 1000;
  1711.                     }
  1712.                     else
  1713.                     {
  1714.                      double_data[c+3] = ymin - 1000;/* descending halfline */
  1715.                     }
  1716.                 }
  1717.                 else
  1718.                 {
  1719.                     if( double_data[c+1] == double_data[c+3] ){ /* horizontal line */
  1720.                         if(double_data[c] < double_data[c+2] ){ /* halfline to the right */
  1721.                             double_data[c+2] = xmax+100;
  1722.                         }
  1723.                         else
  1724.                         {
  1725.                             double_data[c+2] = xmin-1000; /* halfline to the right */
  1726.                         }
  1727.                     }
  1728.                     else
  1729.                     {
  1730.                         /* m */
  1731.                         double m = (double_data[c+3] - double_data[c+1]) /(double_data[c+2] - double_data[c]);
  1732.                         /* q */
  1733.                         double q = double_data[c+1] - ((double_data[c+3] - double_data[c+1]) /(double_data[c+2] - double_data[c]))*double_data[c];
  1734.                         if(double_data[c] < double_data[c+2]){ /* to the right */
  1735.                             double_data[c+2] = xmax+1000; /* 1000 is needed for dragging...otherwise it's just segment */
  1736.                             double_data[c+3] = (m)*(double_data[c+2])+(q);
  1737.                         }
  1738.                         else
  1739.                         { /* to the left */
  1740.                             double_data[c+2] = xmin - 1000;
  1741.                             double_data[c+3] = (m)*(double_data[c+2])+(q);
  1742.                         }
  1743.                     }
  1744.                 }
  1745.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,18,[%.*f,%.*f],[%.*f,%.*f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[c],decimals,double_data[c+2],decimals,double_data[c+1],decimals,double_data[c+3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  1746.                 if(onclick > 0){click_cnt++;}
  1747.                 /* click_cnt++; */
  1748.             }
  1749.             reset();
  1750.             break;
  1751.         case HATCHFILL:
  1752.         /*
  1753.         @ hatchfill x0,y0,dx,dy,color
  1754.         @ x0,y0 in xrange / yrange
  1755.         @ distances dx,dy in pixels
  1756.         @ there is also a command <a href="userdraw">userdraw hatchfill,color</a>
  1757.         @%hatchfill%size 400,400%xrange -10,10%yrange -10,10%canvastype 100%linewidth 2%precision 1000%jsplot blue,5*sin(x)%opacity 200,50%hatchfill 6,6,10,10,blue%hatchfill 6,-6,6,6,red
  1758.         */
  1759.             if( js_function[DRAW_HATCHFILL] != 1 ){ js_function[DRAW_HATCHFILL] = 1;}
  1760.             if(js_function[DRAW_FILLTOBORDER] != 1 ){/* use only once */
  1761.              js_function[DRAW_FILLTOBORDER] = 1;
  1762.              add_js_filltoborder(js_include_file,canvas_root_id,canvas_type);
  1763.             }
  1764.             decimals = find_number_of_digits(precision);
  1765.             for(i=0;i<5;i++){
  1766.                 switch(i){
  1767.                     case 0: double_data[0] = get_real(infile,0); break; /* x */
  1768.                     case 1: double_data[1] = get_real(infile,0); break; /* y  */
  1769.                     case 2: int_data[0] = (int) (get_real(infile,0)); break; /* dx pixel */
  1770.                     case 3: int_data[1] = (int) (get_real(infile,0)); break; /* dy pixel*/
  1771.                     case 4: stroke_color = get_color(infile,1);
  1772.                     /* draw_hatchfill(ctx,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize) */
  1773.                     string_length = snprintf(NULL,0,  "draw_hatchfill(%d,%.*f,%.*f,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS+fill_cnt,decimals,double_data[0],decimals,double_data[1],int_data[0],int_data[1],line_width,stroke_color,stroke_opacity,xsize,ysize);
  1774.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1775.                     snprintf(tmp_buffer,string_length,"draw_hatchfill(%d,%.*f,%.*f,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS+fill_cnt,decimals,double_data[0],decimals,double_data[1],int_data[0],int_data[1],line_width,stroke_color,stroke_opacity,xsize,ysize);
  1776.                     add_to_buffer(tmp_buffer);
  1777.                     fill_cnt++;
  1778.                     break;
  1779.                     default:break;
  1780.                 }
  1781.             }
  1782.             reset();
  1783.         break;
  1784.  
  1785.         case HLINE:
  1786.         /*
  1787.         @ hline x,y,color
  1788.         @ alternative : horizontalline
  1789.         @ draw a horizontal line through point (x:y) in color 'color'
  1790.         @ or use command <a href='#curve'>'curve color,formula'</a> to draw the line <br />(uses more points to draw the line; is however better draggable)
  1791.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
  1792.         @%hline%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%hline 0,0,red%dhline 0,5,blue
  1793.         */
  1794.             for(i=0;i<3;i++) {
  1795.                 switch(i){
  1796.                     case 0: double_data[0] = get_real(infile,0);break; /* x-values */
  1797.                     case 1: double_data[1] = get_real(infile,0);break; /* y-values */
  1798.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  1799.                     double_data[3] = double_data[1];
  1800.                     decimals = find_number_of_digits(precision);
  1801.                     fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,4,[%.*f,%.*f],[%.*f,%.*f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,100*xmin,decimals,100*xmax,decimals,double_data[1],decimals,double_data[3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  1802.                     if(onclick > 0){click_cnt++;}
  1803.                     /* click_cnt++; */
  1804.                     reset();
  1805.                     break;
  1806.                 }
  1807.             }
  1808.             break;
  1809.  
  1810.         case HLINES:
  1811.         /*
  1812.         @ hlines color,x1,y1,x2,y2,...
  1813.         @ alternative : horizontallines
  1814.         @ draw horizontal lines through points (x1:y1)...(xn:yn) in color 'color'
  1815.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> individually
  1816.         @%hlines%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%hlines red,0,0,0,5,0,-5
  1817.         */
  1818.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  1819.             fill_color = stroke_color;
  1820.             i=0;
  1821.             while( ! done ){     /* get next item until EOL*/
  1822.                 if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
  1823.                 if(i%2 == 0 ){
  1824.                     double_data[i] = get_real(infile,0); /* x */
  1825.                 }
  1826.                 else
  1827.                 {
  1828.                     double_data[i] = get_real(infile,1); /* y */
  1829.                 }
  1830.                 i++;
  1831.             }
  1832.             decimals = find_number_of_digits(precision);
  1833.             for(c = 0 ; c < i-1 ; c = c+2){
  1834.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,4,[%.*f,%.*f],[%.*f,%.*f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,xmin,decimals,xmax,decimals,double_data[c+1],decimals,double_data[c+1],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  1835.                 if(onclick > 0){click_cnt++;}
  1836.                 /* click_cnt++; */
  1837.             }
  1838.             reset();
  1839.             break;
  1840.         case HTTP:
  1841.         /*
  1842.          @ http x1,y1,x2,y2,http://some_adress.com
  1843.          @ an active html-page will be displayed in an "iframe" rectangle left top (x1:y1) , right bottom (x2:y2)
  1844.          @ do not use interactivity (or mouse) if the mouse needs to be active in the iframe
  1845.          @ can <b>not</b> be 'set onclick' or 'drag xy'
  1846.          @%http%size 400,400%xrange -10,10%yrange -10,10%http 0,10,10,0,http://wims.unice.fr%opacity 200,50%drag xy%fcircle 0,0,100,green
  1847.         */
  1848.             if( js_function[DRAW_HTTP] != 1 ){ js_function[DRAW_HTTP] = 1;}
  1849.             for(i=0;i<5;i++){
  1850.                 switch(i){
  1851.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in x/y-range coord system -> pixel width */
  1852.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in x/y-range coord system  -> pixel height */
  1853.                     case 2: int_data[2]=x2px(get_real(infile,0)) - int_data[0];break; /* width in x/y-range coord system -> pixel width */
  1854.                     case 3: int_data[3]=y2px(get_real(infile,0)) - int_data[1];break; /* height in x/y-range coord system  -> pixel height */
  1855.                     case 4: decimals = find_number_of_digits(precision);
  1856.                             temp = get_string(infile,1);
  1857.                             if(strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\"","'");}
  1858.                             string_length = snprintf(NULL,0,"draw_http(%d,%d,%d,%d,%d,\"%s\");\n",canvas_root_id,int_data[0],int_data[1],int_data[2],int_data[3],temp);
  1859.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+2);
  1860.                             snprintf(tmp_buffer,string_length,"draw_http(%d,%d,%d,%d,%d,\"%s\");\n",canvas_root_id,int_data[0],int_data[1],int_data[2],int_data[3],temp);
  1861.                             add_to_buffer(tmp_buffer);
  1862.                     break;
  1863.                 }
  1864.             }
  1865.             reset();
  1866.             break;
  1867.         case HTML:
  1868.         /*
  1869.          @ html x1,y1,x2,y2,html_string
  1870.          @ all tags are allowed<br /> html-code using inputfields could be read using your own javascript-code. Do not use id's like 'canvas_input0' etc.
  1871.          @ can be set onclick <br />(however dragging not supported)
  1872.          @%html%size 400,400%xrange -10,10%yrange -10,10%html 0,10,10,0,<table style="border:solid 2px;background-color:yellow"><tr><th>qwerty</th><th>qwerty</th></tr><tr><td>qwerty</td><td>qwerty</td></tr><tr><td>qwerty</td><td>qwerty</td></tr><tr><td>qwerty</td><td>qwerty</td></tr><tr><td>qwerty</td><td>qwerty</td></tr></table> %opacity 200,50%drag xy%fcircle 0,0,100,green
  1873.         */
  1874.             if( js_function[DRAW_XML] != 1 ){ js_function[DRAW_XML] = 1;}
  1875.             for(i=0;i<5;i++){
  1876.                 switch(i){
  1877.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in x/y-range coord system -> pixel width */
  1878.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in x/y-range coord system  -> pixel height */
  1879.                     case 2: int_data[2]=x2px(get_real(infile,0));break;/* no more width needed : overflow  */
  1880.                     case 3: int_data[3]=y2px(get_real(infile,0));break;/* no more height needed : overflow */
  1881.                     case 4: decimals = find_number_of_digits(precision);
  1882.                             temp = get_string(infile,1);
  1883.                             if( strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\"","'"); }
  1884.                             string_length = snprintf(NULL,0,"draw_xml(%d,%d,%d,\"%s\",%d,%d,%d,\"%s\",%.2f,\"%s\",%.2f);\n",canvas_root_id,int_data[0],int_data[1],temp,drag_type,onclick,click_cnt,stroke_color,stroke_opacity,fill_color,fill_opacity);
  1885.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1886.                             snprintf(tmp_buffer,string_length,"draw_xml(%d,%d,%d,\"%s\",%d,%d,%d,\"%s\",%.2f,\"%s\",%.2f);\n",canvas_root_id,int_data[0],int_data[1],temp,drag_type,onclick,click_cnt,stroke_color,stroke_opacity,fill_color,fill_opacity);
  1887.                             add_to_buffer(tmp_buffer);
  1888.                             if(onclick == 1 || onclick == 2 ){click_cnt++;}
  1889.                             break;
  1890.                     default:break;
  1891.                 }
  1892.             }
  1893.             reset();
  1894.             break;
  1895.  
  1896.         case IMAGEFILL:
  1897.         /*
  1898.         @ imagefill x,y,scaling to xsize &times; ysize?,image_url
  1899.         @ The next suitable <b>filled object</b> will be filled with "image_url" tiled
  1900.         @ scaling to xsize &times; ysize ? ... 1 = yes 0 = no
  1901.         @ After pattern filling ,the fill-color should be reset !
  1902.         @ wims getins / image from class directory : imagefill 80,80,my_image.gif
  1903.         @ normal url : imagefill 80,80,0,$module_dir/gifs/my_image.gif
  1904.         @ normal url : imagefill 80,80,1,http://adres/a/b/c/my_image.jpg
  1905.         @ if dx,dy is larger than the image, the whole image will be background to the next object.
  1906.         @%imagefill%size 400,400%xrange -10,10%yrange -10,10%circles blue,0,0,2,1,1,2%imagefill 1.5,1.5,0,https://wims.unice.fr/wims/gifs/en.gif
  1907.         */
  1908.             if( js_function[DRAW_IMAGEFILL] != 1 ){ js_function[DRAW_IMAGEFILL] = 1;}
  1909.             if(js_function[DRAW_FILLTOBORDER] != 1 ){/* use only once */
  1910.              js_function[DRAW_FILLTOBORDER] = 1;
  1911.              add_js_filltoborder(js_include_file,canvas_root_id,canvas_type);
  1912.             }
  1913.             for(i=0 ;i < 4 ; i++){
  1914.                 switch(i){
  1915.                     case 0:int_data[0] = (int) (get_real(infile,0));break;
  1916.                     case 1:int_data[1] = (int) (get_real(infile,0));break;
  1917.                     case 2:int_data[2] = (int) (get_real(infile,0));break; /* 0 | 1 */
  1918.                     case 3: URL = get_string_argument(infile,1);
  1919.                             string_length = snprintf(NULL,0,  "draw_imagefill(%d,%d,%d,\"%s\",%d,%d,%d,%d);\n",STATIC_CANVAS+fill_cnt,int_data[0],int_data[1],URL,xsize,ysize,use_userdraw,int_data[2]);
  1920.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1921.                             snprintf(tmp_buffer,string_length,"draw_imagefill(%d,%d,%d,\"%s\",%d,%d,%d,%d);\n",STATIC_CANVAS+fill_cnt,int_data[0],int_data[1],URL,xsize,ysize,use_userdraw,int_data[2]);
  1922.                             add_to_buffer(tmp_buffer);
  1923.                             fill_cnt++;
  1924.                     break;
  1925.                 }
  1926.             }
  1927.             reset();
  1928.         break;
  1929.  
  1930.         case INPUTSTYLE:
  1931.         /*
  1932.         @ inputstyle style_description
  1933.         @ may be used before any 'style-able' html object.(like inputfields or buttons)<br />or any html objects that are generated by some canvasdraw commands
  1934.         @%inputstyle%size 400,400%xrange -10,10%yrange -10,10%inputstyle color:blue;font-weight:bold;font-style:italic;font-size:16pt;text-align:center%input 0,0,10,1,Hello
  1935.         */
  1936.             input_style = get_string(infile,1);
  1937.             break;
  1938.         case INPUT:
  1939.         /*
  1940.          @ input x,y,size,editable,value
  1941.          @ to set inputfield "readonly", use editable = 0
  1942.          @ only active inputfields (editable = 1) will be read with read_canvas();
  1943.          @ if "$status=done"  (e.g. in answer.phtml) the inputfield will be cleared and set readonly<br />override this by keyword <a href="#status">'status'</a>
  1944.          @ may be further controlled by <a href="#inputstyle">"inputstyle"</a> (inputcss is not yet implemented...)
  1945.          @ if mathml inputfields are present and / or some userdraw is performed, these data will <b>not</b> be send as well (javascript:read_canvas();)
  1946.          @ use keyword <a href='#xoffset'>xoffset | centered</a> if the inputfield should be centered on (x:y)<br /> default is the left top corner is (x:y)
  1947.          @%input%size 400,400%xrange -10,10%yrange -10,10%input 1,2,14,1,hello world
  1948.         */
  1949.         if( js_function[DRAW_INPUTS] != 1 ){ js_function[DRAW_INPUTS] = 1;}
  1950.             for(i = 0 ; i<5;i++){
  1951.                 switch(i){
  1952.                     case 0: int_data[0]=x2px(get_real(infile,0));break;/* x in px */
  1953.                     case 1: int_data[1]=y2px(get_real(infile,0));break;/* y in px */
  1954.                     case 2: int_data[2]=abs( (int)(get_real(infile,0)));break; /* size */
  1955.                     case 3: if( get_real(infile,1) >0){int_data[3] = 1;}else{int_data[3] = 0;};break; /* readonly */
  1956.                     case 4:
  1957.                             temp = get_string_argument(infile,1);
  1958.                             string_length = snprintf(NULL,0,  "draw_inputs(%d,%d,%d,%d,%d,%d,\"%s\",\"%s\",%d);\n",canvas_root_id,input_cnt,int_data[0],int_data[1],int_data[2],int_data[3],input_style,temp,use_offset);
  1959.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1960.                             snprintf(tmp_buffer,string_length,"draw_inputs(%d,%d,%d,%d,%d,%d,\"%s\",\"%s\",%d);\n",canvas_root_id,input_cnt,int_data[0],int_data[1],int_data[2],int_data[3],input_style,temp,use_offset);
  1961.                             add_to_buffer(tmp_buffer);
  1962.                             input_cnt++;break;
  1963.                     default: break;
  1964.                 }
  1965.             }
  1966.             if(reply_format == 0 ){reply_format = 15;}
  1967.             reset();
  1968.             break;
  1969.  
  1970.         case INTOOLTIP:
  1971.             /*
  1972.             @ intooltip link_text
  1973.             @ link_text is a single line (span-element)
  1974.             @ link_text may also be an image URL 'http://some_server/images/my_image.png' or '$module_dir/gifs/my_image.jpg'
  1975.             @ link_text may contain HTML markup
  1976.             @ the canvas will be displayed in a tooltip on 'link_text'
  1977.             @ the canvas is default transparent: use command <a href="#bgcolor">'bgcolor color'</a> to adjust background-color<br />the link text will also be shown with this 'bgcolor'.
  1978.             @ many 'userinput stuff' will use the tooltip_placeholder_div element...only one is defined in the wims-page<br />and are therefor these commands are mutually exclusive.<br />keep this in mind...
  1979.             @%intooltip%size 400,400%xrange -10,10%yrange -10,10%string black,0,0,HelloWorld%intooltip <b>CLICK HERE</b>
  1980.             */
  1981.             if(use_input_xy != FALSE ){canvas_error("intooltip can not be combined with userinput_xy or other commands using the tooltip-div...see documentation");}
  1982.             if( use_tooltip == 1 ){ canvas_error("command 'intooltip' cannot be combined with command 'popup'...");}
  1983.             tooltip_text = get_string(infile,1);
  1984.             if(strstr(tooltip_text,"\"") != 0 ){ tooltip_text = str_replace(tooltip_text,"\"","'"); }
  1985.             use_tooltip = 1;
  1986.             break;
  1987.  
  1988.         case JSCURVE:
  1989.         /*
  1990.          @ jscurve color,formula1(x),formula2(x),formula3(x),...
  1991.          @ alternative : jsplot color,formula(x)
  1992.          @ your function will be plotted by the javascript engine of the client browser
  1993.          @ if <a href='trange'>trange</a> is defined, the two functions will be plotted parametric<br /><b>note</b>: use <i>x</i> as variable...and not <i>t</i>. Use keyword <a href='#animate'>animate</a> to animate a point on the curve
  1994.          @ use only basic math in your curve:<br /> sqrt,^,asin,acos,atan,log,pi,abs,sin,cos,tan,e
  1995.          @ use parenthesis and rawmath : use 2*x instead of 2x ; use 2^(sin(x))...etc etc<br />use error console to debug any errors...
  1996.          @ <b>attention</b> : last "precision" command in the canvasdraw script determines the calculation precision of the javascript curve plot !
  1997.          @ no validity check is done by wims.
  1998.          @ zooming & panning are implemented :<br />use command 'zoom color' for mouse driven zooming<br />or use keyword 'setlimits' for inputfields setting xmin/xmax, ymin/ymax
  1999.          @ zooming & panning is better than for curves produced by command <a href="#curve">curve color,formula</a> because for avery change in x/y-range the curve is recalculated in javascript
  2000.          @ use keyword <a href='animate'>animate</a> for animating a point on the curve
  2001.          @ use command 'trace_jscurve formula(x)` for tracing
  2002.          @ use command 'jsmath  formula(x)` for calculating and displaying indiviual points on the curve
  2003.          @ can <b>not</b> be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> (yet)
  2004.          @ commands plotjump / plotstep are not active for 'jscurve'
  2005.          @ every command jscurve will produce a new canvas (canvastype 111,112,113...) for this one curve.
  2006.          @ plotting multiple js-curves on the same canvas <br/>(for example if you want to use 'userdraw clickfill,color' on <a href="#canvastype">canvastype</a> number 111 ,use :<br/> jscurve red,fun1(x),fun2(x)...fun_n(x)<br />  you must specify individual multistrokecolors &amp; multistrokeopacity &amp; multilinewidth for these multiple js-curves to use different colors.<br />otherwise all curves will be the same color...<br />use commands like: <a href="#multistrokecolors">multistrokecolors</a>,<a href="#multilinewidth">multilinewidth</a>, <a href="#multidash">multidash</a><br />, <a href="multistrokeopacity">multistroke</a><br />the <b>color</b> given for the command "jscurve <b>color</b>,formulas(x)" will not be used in that case...<br />but the color argument must still be given in any case (otherwise syntax error...)
  2007.          @%jscurve%size 400,400%xrange -10,10%yrange -10,10%multicolors red,green,blue,orange%multilinewidth 1,1,1%multistrokeopacity 0.5,0.8,1.0%jscurve red,sin(x),1/sin(x),sin(x^2)
  2008.         */
  2009.             stroke_color = get_color(infile,0);
  2010.             if( use_js_math == FALSE){/* add this stuff only once...*/
  2011.                 add_to_js_math(js_include_file);
  2012.                 use_js_math = TRUE;
  2013.             }
  2014.             if( use_js_plot == FALSE){
  2015.                 use_js_plot = TRUE;
  2016.                 add_jsplot(js_include_file,canvas_root_id); /* this plots the function on JSPLOT_CANVAS */
  2017.             }
  2018.             int use_paramteric = 0;
  2019.             if( tmin != 0 && tmax !=0){use_parametric = 1;}
  2020.             temp = get_string(infile,1);
  2021.             temp = str_replace(temp,",","\",\"");
  2022.             string_length = snprintf(NULL,0,  "jsplot(%d,[\"%s\"],[%d],[\"%s\"],[%.2f],[%d],%d,%d,[%f,%f],%d,%d,%d); ",JSPLOT_CANVAS+jsplot_cnt,temp,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],tmin,tmax,plot_steps,use_parametric,use_animate);
  2023.             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2024.             snprintf(tmp_buffer,string_length,"jsplot(%d,[\"%s\"],[%d],[\"%s\"],[%.2f],[%d],%d,%d,[%f,%f],%d,%d,%d); ",JSPLOT_CANVAS+jsplot_cnt,temp,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],tmin,tmax,plot_steps,use_parametric,use_animate);
  2025.             add_to_buffer(tmp_buffer);
  2026.             jsplot_cnt++;
  2027.              /* we need to create multiple canvasses, so we may zoom and pan ?? */
  2028.         break;
  2029.  
  2030.         case JSMATH:
  2031.         /*
  2032.             @ jsmath some_math_function
  2033.             @ will calculate an y-value from a userinput x-value and draws a crosshair on these coordinates.
  2034.             @ default labels 'x' and 'y'<br />the commands 'xlabel some_x_axis_name' and 'ylabel some_y_axis_name' will set the label for the input fields
  2035.             @ use command 'inputstyle some_css' for styling the display fields. Use command 'fontsize int' to size the labels 'x' and 'y'
  2036.             @ the client browser will convert your math function to javascript math.<br />use parenthesis and rawmath : use 2*x instead of 2x etc etc<br />no check is done on the validity of your function and/or syntax<br />use error console to debug any errors...
  2037.             @ be aware that the formula's of the plotted function(s) can be found in the page javascript source
  2038.             @%jsmath%size 400,400%xrange -10,10%yrange -10,10%jsplot blue,sin(x^2)%jsmath sin(x^2)
  2039.         */
  2040.             if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  2041.             if( use_js_math == FALSE){
  2042.                 add_to_js_math(js_include_file);
  2043.                 use_js_math = TRUE;
  2044.             }
  2045.             add_calc_y(js_include_file,canvas_root_id,get_string(infile,1),font_size,input_style);
  2046.             break;
  2047.         case KILLAFFINE:
  2048.         /*
  2049.         @ killaffine
  2050.         @ keyword : resets the transformation matrix to 1,0,0,1,0,0
  2051.         */
  2052.             use_affine = FALSE;
  2053.             snprintf(affine_matrix,14,"[1,0,0,1,0,0]");
  2054.             break;
  2055.  
  2056.         case KILLROTATE:
  2057.         /*
  2058.          @ killrotate will reset the command <a href="#rotationcenter">rotationcenter xc,yc</a>
  2059.          @ a following rotate command will have the first object point as rotation center
  2060.          @ if not set, the rotation center will remain unchanged
  2061.         */
  2062.             rotation_center= my_newmem(6);
  2063.             snprintf(rotation_center,5,"null");
  2064.          break;
  2065.  
  2066.         case KILLSLIDER:
  2067.         /*
  2068.          @ killslider
  2069.          @ keyword (no arguments required)
  2070.          @ ends grouping of object under a previously defined slider
  2071.         */
  2072.             slider = 0;
  2073.             break;
  2074.  
  2075.         case KILLTRANSLATION:
  2076.         /*
  2077.          @ killtranslation
  2078.          @ alternative : killtranslate
  2079.          @ resets the translation matrix to 1,0,0,1,0,0
  2080.         */
  2081.             use_affine = FALSE;
  2082.             snprintf(affine_matrix,14,"[1,0,0,1,0,0]");
  2083.             break;
  2084.  
  2085.         case LINE:
  2086.         /*
  2087.         @ line x1,y1,x2,y2,color
  2088.         @ draw a line through points (x1:y1)--(x2:y2) in color 'color'
  2089.         @ or use command 'curve color,formula' to draw the line <br />(uses more points to draw the line; is however better draggable)
  2090.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
  2091.         @%line%size 400,400%xrange -10,10%yrange -10,10%line 0,1,2,-1,green
  2092.         */
  2093.             for(i=0;i<5;i++){
  2094.                 switch(i){
  2095.                     case 0: double_data[10]= get_real(infile,0);break; /* x-values */
  2096.                     case 1: double_data[11]= get_real(infile,0);break; /* y-values */
  2097.                     case 2: double_data[12]= get_real(infile,0);break; /* x-values */
  2098.                     case 3: double_data[13]= get_real(infile,0);break; /* y-values */
  2099.                     case 4: stroke_color=get_color(infile,1);/* name or hex color */
  2100.                     if( double_data[10] == double_data[12] ){ /* vertical line*/
  2101.                         double_data[1] = xmin;
  2102.                         double_data[3] = ymax;
  2103.                         double_data[0] = double_data[10];
  2104.                         double_data[2] = double_data[10];
  2105.                     }
  2106.                     else
  2107.                     {
  2108.                         if( double_data[11] == double_data[13] ){ /* horizontal line */
  2109.                             double_data[1] = double_data[11];
  2110.                             double_data[3] = double_data[11];
  2111.                             double_data[0] = ymin;
  2112.                             double_data[2] = xmax;
  2113.                         }
  2114.                         else
  2115.                         {
  2116.                         /* m */
  2117.                         double_data[5] = (double_data[13] - double_data[11]) /(double_data[12] - double_data[10]);
  2118.                         /* q */
  2119.                         double_data[6] = double_data[11] - ((double_data[13] - double_data[11]) /(double_data[12] - double_data[10]))*double_data[10];
  2120.  
  2121.                         /*xmin,m*xmin+q,xmax,m*xmax+q*/
  2122.  
  2123.                             double_data[1] = (double_data[5])*(xmin)+(double_data[6]);
  2124.                             double_data[3] = (double_data[5])*(xmax)+(double_data[6]);
  2125.                             double_data[0] = xmin;
  2126.                             double_data[2] = xmax;
  2127.                         }
  2128.                     }
  2129.                     decimals = find_number_of_digits(precision);
  2130.                     fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,4,[%.*f,%.*f],[%.*f,%.*f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[2],decimals,double_data[1],decimals,double_data[3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  2131.                     if(onclick > 0){click_cnt++;}
  2132.                     /* click_cnt++;*/
  2133.                     reset();
  2134.                     break;
  2135.                 }
  2136.             }
  2137.             break;
  2138.  
  2139.         case LINES:
  2140.         /*
  2141.         @ lines color,x1,y1,x2,y2...x_n-1,y_n-1,x_n,y_n
  2142.         @ draw multiple lines through points (x1:y1)--(x2:y2) ...(x_n-1:y_n-1)--(x_n:y_n) in color 'color'
  2143.         @ or use multiple commands 'curve color,formula' or "jscurve color,formule" to draw the line <br />(uses more points to draw the line; is however better draggable)
  2144.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
  2145.         @ <b>attention</b>: the flydraw command "lines" is equivalent to canvasdraw command <a href="#polyline">"polyline"</a>
  2146.         @%lines%size 400,400%xrange -10,10%yrange -10,10%lines green,0,1,1,3,0,0,1,3,0,0,-2,1
  2147.         */
  2148.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  2149.             fill_color = stroke_color;
  2150.             i=0;
  2151.             while( ! done ){     /* get next item until EOL*/
  2152.                 if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
  2153.                 if(i%2 == 0 ){
  2154.                     double_data[i] = get_real(infile,0); /* x */
  2155.                 }
  2156.                 else
  2157.                 {
  2158.                     double_data[i] = get_real(infile,1); /* y */
  2159.                 }
  2160.                 i++;
  2161.             }
  2162.             decimals = find_number_of_digits(precision);
  2163.             for(c = 0 ; c < i-1 ; c = c+4){
  2164.                 if( double_data[c] == double_data[c+2] ){ /* vertical line*/
  2165.                     double_data[c+1] = xmin;
  2166.                     double_data[c+3] = ymax;
  2167.                     double_data[c+2] = double_data[c];
  2168.                 }
  2169.                 else
  2170.                 {
  2171.                     if( double_data[c+1] == double_data[c+3] ){ /* horizontal line */
  2172.                         double_data[c+3] = double_data[c+1];
  2173.                         double_data[c] = ymin;
  2174.                         double_data[c+2] = xmax;
  2175.                     }
  2176.                     else
  2177.                     {
  2178.                         /* m */
  2179.                         double m = (double_data[c+3] - double_data[c+1]) /(double_data[c+2] - double_data[c]);
  2180.                         /* q */
  2181.                         double q = double_data[c+1] - ((double_data[c+3] - double_data[c+1]) /(double_data[c+2] - double_data[c]))*double_data[c];
  2182.                         /*xmin,m*xmin+q,xmax,m*xmax+q*/
  2183.                         double_data[c+1] = (m)*(xmin)+(q);
  2184.                         double_data[c+3] = (m)*(xmax)+(q);
  2185.                         double_data[c] = xmin;
  2186.                         double_data[c+2] = xmax;
  2187.                     }
  2188.                 }
  2189.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,4,[%.*f,%.*f],[%.*f,%.*f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[c],decimals,double_data[c+2],decimals,double_data[c+1],decimals,double_data[c+3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  2190.                 if(onclick > 0){click_cnt++;}
  2191.                 /* click_cnt++; */
  2192.             }
  2193.             reset();
  2194.             break;
  2195.  
  2196.  
  2197.         case LINEWIDTH:
  2198.         /*
  2199.         @ linewidth int
  2200.         @ default 1
  2201.         @%linewidth%size 400,400%xrange -10,10%yrange -10,10%linewidth 1%line -5,-5,-5,5,red%linewidth 2%line -4,-5,-4,5,green%linewidth 3%line -3,-5,-3,5,blue%linewidth 4%line -2,-5,-2,5,orange%linewidth 1%line -1,-5,-1,5,brown%linewidth 5%line 1,-5,1,5,cyan%linewidth 6%line 3,-5,3,5,purple%linewidth 7%line 5,-5,5,5,black
  2202.         */
  2203.             line_width = (int) (get_real(infile,1));
  2204.             break;
  2205.  
  2206.         case LATTICE:
  2207.         /*
  2208.          @ lattice x0,y0,xv1,yv1,xv2,yv2,n1,n2,color
  2209.          @ can <b>not</b> be set "onclick" or "drag xy"
  2210.          @%lattice%size 400,400%xrange -10,10%yrange -10,10%fillcolor red%linewidth 2%lattice -10,-10,0,1,1,1,10,10,red%fillcolor blue%lattice 10,-10,0,1,-1,1,10,10,blue
  2211.         */
  2212.             if( js_function[DRAW_LATTICE] != 1 ){ js_function[DRAW_LATTICE] = 1;}
  2213.             for( i = 0; i<9; i++){
  2214.                 switch(i){
  2215.                     case 0: int_data[0] = x2px(get_real(infile,0));break; /* x0-values  -> x-pixels*/
  2216.                     case 1: int_data[1] = y2px(get_real(infile,0));break; /* y0-values  -> y-pixels*/
  2217.                     case 2: int_data[2] = (int) (get_real(infile,0));break; /* x1-values  -> x-pixels*/
  2218.                     case 3: int_data[3] = (int) -1*(get_real(infile,0));break; /* y1-values  -> y-pixels*/
  2219.                     case 4: int_data[4] = (int) (get_real(infile,0));break; /* x2-values  -> x-pixels*/
  2220.                     case 5: int_data[5] = (int) -1*(get_real(infile,0));break; /* y2-values  -> y-pixels*/
  2221.                     case 6: int_data[6] = (int) (get_real(infile,0));break; /* n1-values */
  2222.                     case 7: int_data[7] = (int) (get_real(infile,0));break; /* n2-values */
  2223.                     case 8: stroke_color=get_color(infile,1);
  2224.                         decimals = find_number_of_digits(precision);
  2225.                         string_length = snprintf(NULL,0,"draw_lattice(%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,\"%s\",%.2f,\"%s\",%.2f,%d,%.2f,%d,%s,%d); ",STATIC_CANVAS,line_width,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],int_data[6],int_data[7],fill_color,fill_opacity,stroke_color,stroke_opacity,use_rotate,angle,use_affine,affine_matrix,use_filled);
  2226.                         check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2227.                         snprintf(tmp_buffer,string_length,"draw_lattice(%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,\"%s\",%.2f,\"%s\",%.2f,%d,%.2f,%d,%s,%d); ",STATIC_CANVAS,line_width,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],int_data[6],int_data[7],fill_color,fill_opacity,stroke_color,stroke_opacity,use_rotate,angle,use_affine,affine_matrix,use_filled);
  2228.                         add_to_buffer(tmp_buffer);break;
  2229.                     default:break;
  2230.                 }
  2231.             }
  2232.             reset();
  2233.             break;
  2234.  
  2235.         case LEVELCURVE:
  2236.         /*
  2237.         @ levelcurve color,expression in x/y,l1,l2,...
  2238.         @ draws very primitive level curves for expression, with levels l1,l2,l3,...,l_n
  2239.         @ the quality is <b>not to be compared</b> with the Flydraw levelcurve. <br />(choose flydraw if you want quality...)
  2240.         @ every individual level curve may be set 'onclick / drag xy' <br />e.g. every single level curve (l1,l2,l3...l_n) has a unique identifier
  2241.         @ note : the arrays for holding the javascript data are limited in size
  2242.         @ note : reduce image size if javascript data arrays get overloaded<br />(command 'plotsteps int' will not control the data size of the plot...)
  2243.         @%levelcurve%size 400,400%xrange -10,10%yrange -10,10%levelcurve red,x*y,1,2,3,4
  2244.         */
  2245.             fill_color = get_color(infile,0);
  2246.             char *fun1 = get_string_argument(infile,0);
  2247.             if( strlen(fun1) == 0 ){canvas_error("function is NOT OK !");}
  2248.             i = 0;
  2249.             done = FALSE;
  2250.             while( !done ){
  2251.              double_data[i] = get_real(infile,1);
  2252.              i++;
  2253.             }
  2254.             for(c = 0 ; c < i; c++){
  2255.              fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,16,%s,[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,eval_levelcurve(xsize,ysize,fun1,xmin,xmax,ymin,ymax,plot_steps,precision,double_data[c]),line_width,line_width,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  2256.              if(onclick > 0){click_cnt++;}
  2257.              /* click_cnt++; */
  2258.             }
  2259.             reset();
  2260.             break;
  2261.  
  2262.         case LEGEND:
  2263.         /*
  2264.         @ legend string1:string2:string3....string_n
  2265.         @ will be used to create a legend for a graph
  2266.         @ also see command <a href='#piechart'>'piechart'</a>
  2267.         @ will use the same colors per default as used in the graphs : use command <a href='#legendcolors'>'legendcolors'</a> to override the default
  2268.         @ use command <a href="#fontsize">fontsize</a> to adjust. (command "fontfamily" is not active for command "legend")
  2269.         @%legend%size 400,400%xrange -10,10%yrange -10,10%fontsize 8%legend legend 1:legend 2:legend 3%%legendcolors red:green:bluegrid 1,1,grey
  2270.         */
  2271.             temp = get_string(infile,1);
  2272.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  2273.             legend_cnt++; /* attention :starts with -1 : it will be used in piechart etc */
  2274.             fprintf(js_include_file,"var legend%d = [\"%s\"];",legend_cnt,temp);
  2275.             break;
  2276.  
  2277.         case LEGENDCOLORS:
  2278.         /*
  2279.         @ legendcolors color1:color2:color3:...:color_n
  2280.         @ will be used to colour a legend: use this command after the legend command ! e.g.<br />legend test1:test2:test3<br />legendcolors blue:red:orange
  2281.         @ make sure the number of colours match the number of legend items
  2282.         @ command 'legend' in case of 'piechart' and 'barchart' will use these colours per default (no need to specify 'legendcolors'
  2283.         @%legencolors%size 400,400%xrange -10,10%yrange -10,10%fontsize 8%legend legend 1:legend 2:legend 3%legendcolors red:green:blue%grid 1,1,grey
  2284.         */
  2285.             if(legend_cnt == -1){canvas_error("use command \"legend\" before command \"legendcolors\" ! ");}
  2286.             temp = get_string(infile,1);
  2287.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  2288.             fprintf(js_include_file,"var legendcolors%d = [\"%s\"];",legend_cnt,temp);
  2289.             break;
  2290.  
  2291.         case LINEGRAPH: /* scheme: var linegraph_0 = [ 'stroke_color','line_width','use_dashed' ,'dashtype0','dashtype1','x1','y1',...,'x_n','y_n'];*/
  2292.         /*
  2293.         @ linegraph x1:y1:x2:y2...x_n:y_n
  2294.         @ will plot your data in a graph
  2295.         @ may <b>only</b> to be used together with command <a href='#grid'>'grid'</a>
  2296.         @ can be used together with freestyle x-axis/y-axis texts : see commands <a href='#xaxis'>'xaxis'</a>,<a href='#xaxisup'>'xaxisup'</a> and <a href='#yaxis'>'yaxis'</a>
  2297.         @ use command <a href='#legend'>'legend'</a> to provide an optional legend in right-top-corner
  2298.         @ also see command <a href='#piechart'>'piechart'</a>
  2299.         @ multiple linegraphs may be used in a single plot
  2300.         @ note: your arguments are not checked by canvasdraw : use your javascript console in case of trouble...
  2301.         @ <ul><li>use command <a href='#strokecolor'>'strokecolor'</a> before a command 'linegraph' to set the color of this graph</li><li>use command <a href='#linewidth'>'linewidth'</a> before command 'linegraph' to set linewidth of this graph</li><li>use keyword <a href='#dashed'>'dashed'</a> before command 'linegraph' to set dashing of the graph</li><li>if dashing is set, use command <a href='#dashtype'>'dashtype'</a> before command 'linegraph' to set the type of dashing of the (individual) graph</li></ul>
  2302.         @%linegraph%size 400,400%xrange -10,10%yrange -10,10%strokecolor red%linegraph -10:1:-5:-1:3:3:10:-5%strokecolor blue%linegraph -10:-1:-5:1:3:-3:10:5%dashed%strokecolor green%linegraph -10:2:-5:-2:3:4:10:2%grid 1,1,grey
  2303.         */
  2304.             temp = get_string(infile,1);
  2305.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  2306.             fprintf(js_include_file,"var linegraph_%d = [\"%s\",\"%d\",\"%d\",\"%d\",\"%d\",\"%s\"];",linegraph_cnt,stroke_color,line_width,use_dashed,dashtype[0],dashtype[1],temp);
  2307.             linegraph_cnt++;
  2308.             reset();
  2309.             break;
  2310.  
  2311.         case MATHML:
  2312.         /*
  2313.         @ mathml x1,y1,x2,y2,mathml_string
  2314.         @ mathml will be displayed in a rectangle left top (x1:y1)...<br />x2 and y2 are still needed, but not used as the right bottom corner of the embedded div element.
  2315.         @ in case of drag(xy|x|y) | onclick the div rectangle left to corner will be the drag-anchor  of the mathml object
  2316.         @ can be set onclick <br />javascript:read_dragdrop(); will return click numbers of mathml-objects<br />if 4 click_able object are drawn, the reply could be 1,0,1,0 ... meaning clicked on the first and third object
  2317.         @ can be set draggable<br /> the javascript:read_dragdrop() will return all coordinates <br />in same order as the canvas script: unmoved object will have their original coordinates...
  2318.         @ snaptogrid is supported...snaptopoints will work, but use with care...due to the primitive dragging<br />technically: the dragstuff library is not used...the mathml is embedded in a new div element and not in the html5-canvas
  2319.         @ when clicked, the mathml object will be drawn in red color; the div background color will be determined by the <a href="#fillcolor">'fillcolor'</a> and <a href="#opacity">'opacity'</a> settings
  2320.         @ userdraw may be combined with 'mathml' ; the read_canvas() will contain the drawing.
  2321.         @ draggable or onclick 'external images' from command <a href='#copyresized'>copy or copyresized</a> can be combined with drag and/or onclick  mathml
  2322.         @ other drag objects (circles/rects etc) are supported , but read_dragdrop() will probably be difficult to interpret...
  2323.         @ if inputfields are incorporated in mathml (with id's : id='mathml0',id='mathml1',...id='mathml_n')<br />the user_input values will be read by javascript:read_mathml();<br /><b>attention</b>: if after this mathml-input object other user-interactions are included, these will read mathml too using "read_canvas();"
  2324.         @ If other inputfields (command input / command textarea) or userdraw is performed, the function read_canvas() will not read mathml. Use some generic function to read it....
  2325.         @%mathml_onclick%size 400,400%xrange -10,10%yrange -10,10%onclick%strokecolor red%mathml -5,5,0,0,<span style="font-size:1em;"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mstyle id="wims_mathml366290"><mrow><mo stretchy="true">[</mo><mtable rowspacing="0.5ex"  columnalign=" left "  columnlines=" none "  rowlines=" none "  ><mtr><mtd><mi>f</mi><mo stretchy="false">(</mo><mi>x</mi><mo stretchy="false">)</mo><mo>=</mo><mstyle displaystyle="true"><mfrac><mn>1</mn><mn>2</mn></mfrac></mstyle><mo>&sdot;</mo><msup><mi>x</mi> <mn>2</mn></msup></mtd></mtr> <mtr><mtd><mi>g</mi><mo stretchy="false">(</mo><mi>x</mi><mo stretchy="false">)</mo><mo>=</mo><msqrt><mstyle displaystyle="true"><mfrac><mn>1</mn><mrow><msup><mi>x</mi> <mn>2</mn></msup></mrow></mfrac></mstyle></msqrt></mtd></mtr></mtable><mo stretchy="true">]</mo></mrow></mstyle></math></span>%onclick%strokecolor blue%mathml 5,5,0,0,<span style="font-size:1em;"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mstyle id="wims_mathml580175" ><mrow><mo stretchy="true">[</mo><mtable rowspacing="0.5ex"  columnalign=" left "  columnlines=" none "  rowlines=" none "  ><mtr><mtd><mi>f</mi><mo stretchy="false">(</mo><mi>x</mi><mo stretchy="false">)</mo><mo>=</mo><mstyle displaystyle="true"><mfrac><mn>1</mn><mrow><mi>sin</mi><mrow><mo stretchy="true">(</mo><msup><mi>x</mi> <mn>2</mn></msup><mo stretchy="true">)</mo></mrow></mrow></mfrac></mstyle></mtd></mtr> <mtr><mtd><mi>g</mi><mo stretchy="false">(</mo><mi>x</mi><mo stretchy="false">)</mo><mo>=</mo><msqrt><mrow><mi>sin</mi><mrow><mo stretchy="true">(</mo><msup><mi>x</mi> <mn>2</mn></msup><mo stretchy="true">)</mo></mrow></mrow></msqrt></mtd></mtr></mtable><mo stretchy="true">]</mo></mrow></mstyle></math></span> 
  2326.         @%mathml_drag%size 400,400%xrange -10,10%yrange -10,10%drag xy%strokecolor red%mathml -5,5,0,0,<span style="font-size:1em;"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mstyle id="wims_mathml366290"><mrow><mo stretchy="true">[</mo><mtable rowspacing="0.5ex"  columnalign=" left "  columnlines=" none "  rowlines=" none "  ><mtr><mtd><mi>f</mi><mo stretchy="false">(</mo><mi>x</mi><mo stretchy="false">)</mo><mo>=</mo><mstyle displaystyle="true"><mfrac><mn>1</mn><mn>2</mn></mfrac></mstyle><mo>&sdot;</mo><msup><mi>x</mi> <mn>2</mn></msup></mtd></mtr> <mtr><mtd><mi>g</mi><mo stretchy="false">(</mo><mi>x</mi><mo stretchy="false">)</mo><mo>=</mo><msqrt><mstyle displaystyle="true"><mfrac><mn>1</mn><mrow><msup><mi>x</mi> <mn>2</mn></msup></mrow></mfrac></mstyle></msqrt></mtd></mtr></mtable><mo stretchy="true">]</mo></mrow></mstyle></math></span>%drag xy%strokecolor blue%mathml 5,5,0,0,<span style="font-size:1em;"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mstyle id="wims_mathml580175" ><mrow><mo stretchy="true">[</mo><mtable rowspacing="0.5ex"  columnalign=" left "  columnlines=" none "  rowlines=" none "  ><mtr><mtd><mi>f</mi><mo stretchy="false">(</mo><mi>x</mi><mo stretchy="false">)</mo><mo>=</mo><mstyle displaystyle="true"><mfrac><mn>1</mn><mrow><mi>sin</mi><mrow><mo stretchy="true">(</mo><msup><mi>x</mi> <mn>2</mn></msup><mo stretchy="true">)</mo></mrow></mrow></mfrac></mstyle></mtd></mtr> <mtr><mtd><mi>g</mi><mo stretchy="false">(</mo><mi>x</mi><mo stretchy="false">)</mo><mo>=</mo><msqrt><mrow><mi>sin</mi><mrow><mo stretchy="true">(</mo><msup><mi>x</mi> <mn>2</mn></msup><mo stretchy="true">)</mo></mrow></mrow></msqrt></mtd></mtr></mtable><mo stretchy="true">]</mo></mrow></mstyle></math></span>%#click left top corner...than drag...      
  2327.         */
  2328.             if( js_function[DRAW_XML] != 1 ){ js_function[DRAW_XML] = 1;}
  2329.             for(i=0;i<5;i++){
  2330.                 switch(i){
  2331.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in x/y-range coord system -> pixel width */
  2332.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in x/y-range coord system  -> pixel height */
  2333.                     case 2: int_data[2]=x2px(get_real(infile,0));break;/* no more width needed : overflow  */
  2334.                     case 3: int_data[3]=y2px(get_real(infile,0));break;/* no more height needed : overflow */
  2335.                     case 4: decimals = find_number_of_digits(precision);
  2336.                             temp = get_string(infile,1);
  2337.                             if( strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\"","'"); }
  2338.                             string_length = snprintf(NULL,0,"draw_xml(%d,%d,%d,\"%s\",%d,%d,%d,\"%s\",%.2f,\"%s\",%.2f);\n",canvas_root_id,int_data[0],int_data[1],temp,drag_type,onclick,click_cnt,stroke_color,stroke_opacity,fill_color,fill_opacity);
  2339.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2340.                             snprintf(tmp_buffer,string_length,"draw_xml(%d,%d,%d,\"%s\",%d,%d,%d,\"%s\",%.2f,\"%s\",%.2f);\n",canvas_root_id,int_data[0],int_data[1],temp,drag_type,onclick,click_cnt,stroke_color,stroke_opacity,fill_color,fill_opacity);
  2341.                             add_to_buffer(tmp_buffer);
  2342.                             if(onclick == 1 || onclick == 2 ){click_cnt++;}
  2343.                             /*
  2344.                              in case inputs are present , trigger adding the read_mathml()
  2345.                              if no other reply_format is defined
  2346.                              note: all other reply types will include a reading of elements with id='mathml'+p)
  2347.                              */
  2348.                             if(strstr(temp,"mathml0") != NULL){
  2349.                              if(reply_format == 0 ){reply_format = 16;} /* no other reply type is defined */
  2350.                             }
  2351.                             break;
  2352.                     default:break;
  2353.                 }
  2354.             }
  2355.             reset();
  2356.             break;
  2357.  
  2358.         case MOUSE:
  2359.         /*
  2360.          @ mouse color,fontsize
  2361.          @ will display the cursor (x:y) coordinates  in 'color' and 'font size'<br /> using default fontfamily Ariel
  2362.          @ note: use command 'mouse' at the end of your script code (the same is true for command 'zoom')
  2363.          @%mouse%size 400,400%xrange -10,10%yrange -10,10%mouse red,22
  2364.         */
  2365.             stroke_color = get_color(infile,0);
  2366.             font_size = (int) (get_real(infile,1));
  2367.             tmp_buffer = my_newmem(26);
  2368.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2369.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,2);
  2370.             break;
  2371.  
  2372.  
  2373.         case MOUSE_DEGREE:
  2374.         /*
  2375.          @ mouse_degree color,fontsize
  2376.          @ will display the angle in degrees between x-axis, (0:0) and the cursor (x:y) in 'color' and 'font size'<br /> using a fontfamily Ariel
  2377.          @ The angle is positive in QI and QIII and the angle value is negative in QII and QIV
  2378.          @ note: use command 'mouse' at the end of your script code (the same is true for command 'zoom')
  2379.          @%mouse_degree%size 400,400%xrange -10,10%yrange -10,10%userdraw arc,blue%precision 100000%mouse_degree red,22
  2380.         */
  2381.             stroke_color = get_color(infile,0);
  2382.             font_size = (int) (get_real(infile,1));
  2383.             tmp_buffer = my_newmem(26);
  2384.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2385.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,3);
  2386.             js_function[JS_FIND_ANGLE] = 1;
  2387.             break;
  2388.         case MOUSE_DISPLAY:
  2389.         /*
  2390.          @ display TYPE,color,fontsize
  2391.          @ TYPE may be x | y | xy | degree | radian | radius
  2392.          @ will display the mouse cursor coordinates as x-only,y-only,(x:y),<br />the radius of a circle (this only in case 'userdraw circle(s),color')<br />or the angle in degrees or radians for commands "userdraw arc,color" or protractor , ruler (if set dynamic)
  2393.          @ use commands 'xunit' and / or 'yunit' to add the units to the mouse values.<br />The "degree | radian" will always have the appropriate symbol)
  2394.          @ just like commands 'mouse','mousex','mousey','mouse_degree'...only other name)
  2395.          @%display_x%size 400,400%xrange -10,10%yrange -10,10%xunit \\u212B%display x,red,22
  2396.          @%display_y%size 400,400%xrange -10,10%yrange -10,10%yunit seconds%display y,red,22
  2397.          @%display_xy%size 400,400%xrange -10,10%yrange -10,10%xunit centimetre%yunit seconds%display xy,red,22%userdraw segemens,blue
  2398.          @%display_deg%size 400,400%xrange -10,10%yrange -10,10%display degree,red,22%fillcolor orange%opacity 200,50%userdraw arc,blue
  2399.          @%display_rad%size 400,400%xrange -10,10%yrange -10,10%display radian,red,22%fillcolor orange%opacity 200,50%userdraw arc,blue
  2400.          @%display_radius%size 400,400%xrange -10,10%yrange -10,10%xunit cm%xunit \\u212b%display radius,red,22%userdraw circle,blue
  2401.         */
  2402.         temp = get_string_argument(infile,0);
  2403.         if( strstr(temp,"xy") != NULL ){
  2404.             int_data[0] = 2;
  2405.         }else{
  2406.             if( strstr(temp,"y") != NULL ){
  2407.                 int_data[0] = 1;
  2408.             }else{
  2409.                 if( strstr(temp,"x") != NULL ){
  2410.                     int_data[0] = 0;
  2411.                 }else{
  2412.                     if(strstr(temp,"degree") != NULL){
  2413.                         int_data[0] = 3;
  2414.                         js_function[JS_FIND_ANGLE] = 1;
  2415.                     }else{
  2416.                         if(strstr(temp,"radian") != NULL){
  2417.                             int_data[0] = 4;
  2418.                             js_function[JS_FIND_ANGLE] = 1;
  2419.                         }else{
  2420.                             if(strstr(temp,"radius") != NULL){
  2421.                                 int_data[0] = 5;
  2422.                             }else{
  2423.                                 int_data[0] = 2;
  2424.                             }
  2425.                         }
  2426.                     }
  2427.                 }
  2428.             }
  2429.         }
  2430.         stroke_color = get_color(infile,0);
  2431.         font_size = (int) (get_real(infile,1));
  2432.         tmp_buffer = my_newmem(26);
  2433.         snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2434.         add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,int_data[0]);
  2435.         break;
  2436.  
  2437.         case MOUSE_PRECISION:
  2438.         /*
  2439.             @ precision int
  2440.             @ 1 = no decimals ; 10 = 1 decimal ; 100 = 2 decimals etc
  2441.             @ may be used / changed before every object
  2442.             @ In case of user interaction (like 'userdraw' or 'multidraw') this value will be used to determine the amount of decimals in the reply / answer
  2443.             @%precision%size 400,400%xrange -10,10%yrange -10,10%precision 1%userdraw segement,red
  2444.         */
  2445.             precision = (int) (get_real(infile,1));
  2446.             if(precision < 1 ){precision = 1;};
  2447.             break;
  2448.  
  2449.         case MOUSEX:
  2450.         /*
  2451.          @ mousex color,fontsize
  2452.          @ will display the cursor x-coordinate in 'color' and 'font size'<br /> using the fontfamily Ariel
  2453.          @ note: use command 'mouse' at the end of your script code (the same is true for command 'zoom')
  2454.  
  2455.         */
  2456.             stroke_color = get_color(infile,0);
  2457.             font_size = (int) (get_real(infile,1));
  2458.             tmp_buffer = my_newmem(26);
  2459.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2460.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,0);
  2461.             break;
  2462.         case MOUSEY:
  2463.         /*
  2464.          @ mousey color,fontsize
  2465.          @ will display the cursor y-coordinate in 'color' and 'font size'<br /> using default fontfamily Ariel
  2466.          @ note: use command 'mouse' at the end of your script code (the same is true for command 'zoom')
  2467.  
  2468.         */
  2469.             stroke_color = get_color(infile,0);
  2470.             font_size = (int) (get_real(infile,1));
  2471.             tmp_buffer = my_newmem(26);
  2472.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2473.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,1);
  2474.             break;
  2475.  
  2476.         case MULTIDASH:
  2477.         /*
  2478.          @ multidash 0,1,1
  2479.          @ meaning draw objects no. 2 (circle) and 3 (segments), in the list of command like <em>'multifill points,circle,segments'</em>, are dashed
  2480.          @ use before command <a href='#multidraw'>'multidraw'</a>
  2481.          @ if not set all objects will be set 'not dashed'...<br />unless a generic keyword <em>'dashed'</em> was given before command <em>'multidraw'</em>
  2482.          @ the dash-type is not -yet- adjustable <br />(e.g. command <em>dashtype line_px,space_px</em> will give no control over multidraw objects)
  2483.          @ wims will <b>not</b> check if the number of 0 or 1's matches the amount of draw primitives...
  2484.          @ always use the same sequence as is used for 'multidraw'
  2485.         */
  2486.             if( use_tooltip == 1 ){canvas_error("command 'multidraw' is incompatible with command 'intooltip tip_text'");}
  2487.             temp = get_string(infile,1);
  2488.             temp = str_replace(temp,",","\",\"");
  2489.             fprintf(js_include_file,"var multidash = [\"%s\"];",temp);
  2490.             reset();/* if command 'dashed' was given...reset to not-dashed */
  2491.             break;
  2492.  
  2493.         case MULTIDRAW:
  2494.         /*
  2495.          @ multidraw obj_type_1,obj_type_2...obj_type_11
  2496.          @ for simple single object user drawings you could also use command <a href="#userdraw">'userdraw'</a>
  2497.          @ implemented obj_types:<ul><li>point | points </li><li>circle | circles </li><li>line | lines </li><li>segment | segments </li><li>arrow | arrows <br />use command 'arrowhead int' for size (default value 8 pixels)</li><li>rect | rects </li><li>closedpoly<br /><b>only one</b> closedpolygon may be drawn.The number of 'corner points' is not preset (e.g. not limited,freestyle)<br />the polygone is closed when clicking on the first point again..(+/- 10px) </li><li>triangle | triangles</li><li>parallelogram | parallelograms</li><li>poly[3-9] | polys[3-9] draw 3...9 point polygone(s): polys3 is of course triangles </li></ul>
  2498.          @ additionally objects may be user labelled, using obj_type 'text'...<br />in this case allways a text input field and if <a href='#multiuserinput'> multiuserinput=1 </a> also (x:y) inputfields will be added to the page.<br />use commands 'fontfamily' and 'fontcolor' to adjust. (command 'multistrokeopacity' may be set to adjust text opacity)<br />note: text is always centered on the mouse-click or user-input coordinates !<br />note: no keyboard listeners are used
  2499.          @ it makes no sense using something like "multidraw point,points" ... <br />something like "multidraw polys4,polys7" will only result in drawing a '4 point polygone' and not a '7 point polygone' : this is a design flaw and not a feature...
  2500.          @ note: mouselisteners are only active if "$status != done " (eg only drawing in an active/non-finished exercise) <br /> to overrule use command/keyword "status" (no arguments required)
  2501.          @ buttons for changing the obj_type (and incase of 'multiuserinput' , some inputfields and buttons) <br />will be present in the reserved div 'tooltip_div' and can be styled using command 'inputstyle some_css'
  2502.          @ the button label will be default the 'object primitive name' (like 'point', 'circles').<br />If you want a different label (e.g. an other language) ,use command 'multilabel'<br />for example in dutch: <br /><em>multilabel cirkel,lijnstuk,punten,STOP<br />multidraw circle,segment,points</em><br />(see command <a href='#multilabel'>'multilabel'</a> for more details)
  2503.          @ multidraw is incompatible with command 'tooltip' (the reserved div_area is used for the multidraw control buttons)
  2504.          @ all 'multidraw' drawings will scale on zooming.<br />this in contrast to the command <a href="#userdraw">'userdraw'</a>.
  2505.          @ wims will <b>not</b> check the amount or validity of your command arguments ! <br />( use javascript console to debug any typo's )
  2506.          @ a local function read_canvas%d will read all userbased drawings.<br />The output is always a 11 lines string with fixed sequence.<br/>line 1 = points_x+";"+points_y+"\\n"<br/>line 2 = circles_x+";"+circlespoint_y+";"+multi_radius+"\\n"<br/>line 3 = segments_x+";"+segments_y+"\\n"<br/>line 4 = arrows_x+";"+arrows_y+"\\n"<br/>line 5 = lines_x+";"+lines_y+"\\n"<br/>line 6 = triangles_x+";"+triangles_y+"\\n"<br/>line 7 = polys[3-9]_x+";"+polys[3-9]_y+"\\n"<br/>line 8 = rects_x +";"+rects_y+"\\n"<br />line 9 = closedpoly_x+";"+closedpoly_y+"\\n"<br/>line 10 = parallelogram_x+";"+parallelogram_y"\\n"<br/>line 11 = text_x+";"+text_y+";"+text"\\n"<br/>The x/y-data are in x/y-coordinate system and display precision may be set by a previous command 'precision 0 | 10 | 100 | 1000...'<br />In case of circles the radius is -for the time being- rounded to pixels<br /><b>use the wims "direct exec" tool to see the format of the reply</b>
  2507.          @ It is best to prepare / format the student reply in clientside javascript.<br />However in wims language you could use something like this<br />for example you are interested in the polys5 drawings of a pupil (the pupil may draw multiple poly5 objects...)<br />note: the reply for 2 poly5's is:  x11,x12,x13,x14,x15,x21,x22,x23,x24,x25 ; y11,y12,y13,y14,y15,y21,y22,y23,y24,y25<br />rep = !line 7 of reply <br />rep = !translate ';' to '\\n' in $rep <br />pts = 5 # 5 points for polygon <br />x_rep = !line 1 of $rep <br />y_rep = !line 2 of $rep <br />tot = !itemcnt $x_rep <br />num_poly = $[$tot/$pts] <br />idx = 0 <br />!for p=1 to $num_poly <br />&nbsp;!for s=1 to $pts <br />&nbsp;&nbsp;!increase idx <br />&nbsp;&nbsp;X = !item $idx of $x_rep <br />&nbsp;&nbsp;Y = !item $idx of $y_rep <br />&nbsp;&nbsp;# do some checking <br />&nbsp;!next s <br />!next p <br />
  2508.          @ <b>attention</b>: for command argument 'closedpoly' only one polygone can be drawn.<br />The last point (e.g. the point clicked near the first point) of the array is removed.
  2509.          @ <em>technical: all 10 'draw primitives' + 'text' will have their own -transparent- PNG bitmap canvas. <br />So for example there can be a points_canvas entirely separated from a line_canvas.<br />This to avoid the need for a complete redraw when something is drawn to the canvas...(eg only the object_type_canvas is redrawn)<br />This in contrast too many very slow do-it-all HTML5 canvas javascript libraries.<br />The mouselisteners are attached to the canvas-div element.</em>
  2510.          @%multidraw%size 400,400%xrange -10,10%yrange -10,10%multidash 1,0%multilinewidth 1,2%multistrokecolors red,blue%multisnaptogrid 1,1%multilabel LINES,CIRCLES,STOP DRAWING%multidraw lines,circles
  2511.          @%multidraw_all%size 400,400%xrange -5,5%yrange -5,5%hline 0,0,black%vline 0,0,black%grid 1,1,grey%filled%dashed%snaptogrid%fillcolor orange%opacity 200,50%drag xy%fcircle 0,0,50,red%multifillcolors orange,yellow,red,green,lightgreen,orange,red%multistrokecolors red,green,blue,orange,cyan,green,blue%multilinewidth 3,2,1,3,2,1,3%multistrokeopacity 0.8,0.7,0.6,0.5,0.6,0.7,0.4%multifillopacity 0.2,0.2,0.6,0.5,0.4,0.5,0.2%multiuserinput 1,0,1,0,1,0,1%multifill 1,0,1,0,1,0,0%multilabel POLYGON,POINTS,CIRCLES,SEGMENTS,POLY5,LINES,VECTORS,stop drawing%multidraw closedpoly,points,circles,segments,poly5,lines,arrows
  2512.         */
  2513.         //    if( use_tooltip == 1 ){canvas_error("command 'multidraw' is incompatible with command 'intooltip tip_text'");}
  2514.             if( use_userdraw == TRUE ){canvas_error("Only one userdraw primitive may be used in command 'userdraw' use command 'multidraw' for this...");}
  2515.             use_userdraw = TRUE;
  2516.             /* LET OP max 6 DRAW PRIMITIVES + TEXT */
  2517.             temp = get_string(infile,1);
  2518.             temp = str_replace(temp,",","\",\"");
  2519.             /* if these are not set, set the default values for the 6 (!!!)  draw_primitives + draw_text */
  2520.             fprintf(js_include_file,"\
  2521.             if( typeof(multistrokecolors) === 'undefined' && multistrokecolors == null  ){ var multistrokecolors = ['%s','%s','%s','%s','%s','%s','%s','%s','%s'];};\
  2522.             if( typeof(multifillcolors) === 'undefined' && multifillcolors == null ){ var multifillcolors = ['%s','%s','%s','%s','%s','%s','%s','%s','%s'];};\
  2523.             if( typeof(multistrokeopacity) === 'undefined' && multistrokeopacity == null ){ var multistrokeopacity = ['%.2f','%.2f','%.2f','%.2f','%.2f','%.2f','%2.f','%2.f','%2.f'];};\
  2524.             if( typeof(multifillopacity) === 'undefined' &&  multifillopacity == null ){ var multifillopacity = ['%.2f','%.2f','%.2f','%.2f','%.2f','%.2f','%2.f','%2.f','%2.f'];};\
  2525.             if( typeof(multilinewidth) === 'undefined' && multilinewidth == null ){ var multilinewidth = ['%d','%d','%d','%d','%d','%d','%d','%d','%d'];};\
  2526.             if( typeof(multifill) === 'undefined' && multifill == null ){ var multifill = ['%d','%d','%d','%d','%d','%d','%d','%d','%d'];};\
  2527.             if( typeof(multidash) === 'undefined' && multidash == null ){ var multidash = ['%d','%d','%d','%d','%d','%d','%d','%d','%d'];};\
  2528.             if( typeof(multilabel) === 'undefined' && multilabel == null ){ var multilabel = [\"%s\",\"stop drawing\"];};\
  2529.             if( typeof(multiuserinput) === 'undefined' && multiuserinput == null ){ var multiuserinput= ['0','0','0','0','0','0','0','0'];};\
  2530.             if( typeof(multisnaptogrid) == 'undefined' && multisnaptogrid == null){var multisnaptogrid;if( x_use_snap_to_grid == 1 && y_use_snap_to_grid == 1){ multisnaptogrid = [1,1,1,1,1,1,1];}else{if( x_use_snap_to_grid == 1 ){ multisnaptogrid = [2,2,2,2,2,2,2];}else{if( y_use_snap_to_grid == 1 ){ multisnaptogrid = [3,3,3,3,3,3,3];}else{ multisnaptogrid = [0,0,0,0,0,0,0];};};};};\
  2531.             var arrow_head = %d;var multifont_color = '%s';var multifont_family = '%s';",
  2532.             stroke_color,stroke_color,stroke_color,stroke_color,stroke_color,stroke_color,stroke_color,stroke_color,stroke_color,
  2533.             fill_color,fill_color,fill_color,fill_color,fill_color,fill_color,fill_color,fill_color,fill_color,
  2534.             stroke_opacity,stroke_opacity,stroke_opacity,stroke_opacity,stroke_opacity,stroke_opacity,stroke_opacity,stroke_opacity,stroke_opacity,
  2535.             fill_opacity,fill_opacity,fill_opacity,fill_opacity,fill_opacity,fill_opacity,fill_opacity,fill_opacity,fill_opacity,
  2536.             line_width,line_width,line_width,line_width,line_width,line_width,line_width,line_width,line_width,
  2537.             use_filled,use_filled,use_filled,use_filled,use_filled,use_filled,use_filled,use_filled,use_filled,
  2538.             use_dashed,use_dashed,use_dashed,use_dashed,use_dashed,use_dashed,use_dashed,use_dashed,use_dashed,
  2539.             temp,arrow_head,font_color,font_family);
  2540.  
  2541.             if(strstr(temp,"text") != NULL){
  2542.              if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  2543.             }
  2544.  
  2545.             /* the canvasses range from 1000 ... 1008 */
  2546.             add_js_multidraw(js_include_file,canvas_root_id,temp,input_style);
  2547.             reply_precision = precision;
  2548.             if( reply_format == 0){reply_format = 29;}
  2549.             reset();/* if command 'filled' / 'dashed' was given...reset all */
  2550.             break;
  2551.         case MULTILABEL:
  2552.         /*
  2553.          @ multilabel button_label_1,button_label_2,...,button_label_8,'stop drawing text'
  2554.          @ use before command <a href='#multidraw'>'multidraw'</a>
  2555.          @ if not set all labels (e.g. the value='' of input type 'button') will be set by the english names for the draw_primitives (like 'point','circle'...)
  2556.          @ the 'stop drawing' button text <b>must</b> be the last item on the 'multilabel' -list <br />for example:<br /><em>multilabel punten,lijnen,Stop met Tekenen<br />multidraw points,lines</em>
  2557.          @ all buttons can be 'styled' by using commant 'inputstyle'<br /><b>note:</b><em>If you want to add some CSS style to the buttons...<br />the id's of the 'draw buttons' are their english command argument<br />(e.g. id="canvasdraw_points" for the draw points button).<br />the id of the 'stop drawing' button is "canvasdraw_stop_drawing".<br />the id of the "OK" button is"canvasdraw_ok_button"</em>
  2558.          @ wims will not check the amount or validity of your input
  2559.          @ always use the same sequence as is used for 'multidraw'
  2560.         */
  2561.             if( use_tooltip == 1 ){canvas_error("command 'multidraw' is incompatible with command 'intooltip tip_text'");}
  2562.             temp = get_string(infile,1);
  2563.             temp = str_replace(temp,",","\",\"");
  2564.             fprintf(js_include_file,"var multilabel = [\"%s\"];",temp);
  2565.             break;
  2566.         case MULTILINEWIDTH:
  2567.         /*
  2568.          @ multilinewidth linewidth_1,linewidth_2,...,linewidth_8
  2569.          @ use before command <a href='#multidraw'>'multidraw'</a>
  2570.          @ if not set all line width will be set by a previous command <em>'linewidth int'</em>
  2571.          @ use these up to 7 different line widths for the draw primitives used by command <em>'multidraw obj_type_1,obj_type_2...obj_type_7</em>
  2572.          @ wims will <b>not</b> check if the number of 0 or 1's matches the amount of draw primitives...
  2573.          @ always use the same sequence as is used for 'multidraw'
  2574.         */
  2575.             if( use_tooltip == 1 ){canvas_error("command 'multidraw' is incompatible with command 'intooltip tip_text'");}
  2576.             temp = get_string(infile,1);
  2577.             temp = str_replace(temp,",","\",\"");
  2578.             fprintf(js_include_file,"var multilinewidth = [\"%s\"];",temp);
  2579.             break;
  2580.         case MULTIFILL:
  2581.         /*
  2582.          @ multifill 0,0,1,0,1,0,0
  2583.          @ meaning draw objects no. 3 and 5, in the list of command 'multifill', are filled<br />(if the object is fillable...and not a line,segment,arrow or point...)
  2584.          @ use before command <a href='#multidraw'>'multidraw'</a>
  2585.          @ if not set all objects -except point|points-  will be set 'not filled'...<br />unless a command 'filled' was given before command 'multifill'
  2586.          @ only suitable for draw_primitives like 'circle | circles' , 'triangle | triangles' and 'polygon'
  2587.          @ wims will <b>not</b> check if the number of 0 or 1's matches the amount of draw primitives...
  2588.          @ always use the same sequence as is used for 'multidraw'
  2589.         */
  2590.             if( use_tooltip == 1 ){canvas_error("command 'multidraw' is incompatible with command 'intooltip tip_text'");}
  2591.             temp = get_string(infile,1);
  2592.             temp = str_replace(temp,",","\",\"");
  2593.             fprintf(js_include_file,"var multifill = [\"%s\"];",temp);
  2594.             break;
  2595.  
  2596.         case MULTIFILLCOLORS:
  2597.         /*
  2598.          @ multifillcolors color_name_1,color_name_2,...,color_name_8
  2599.          @ use before command <a href='#multidraw'>'multidraw'</a>
  2600.          @ if not set all fillcolors (for circle | triangle | poly[3-9] | closedpoly ) will be 'stroke_color' , 'fill_opacity'
  2601.          @ use these up to 6 colors for the draw primitives used by command 'multidraw obj_type_1,obj_type_2...obj_type_n
  2602.          @ wims will <b>not</b> check if the number of colours matches the amount of draw primitives...
  2603.          @ always use the same sequence as is used for 'multidraw'
  2604.          @ can also be used with command <a href='#userdraw'>'userdraw clickfill,color'</a> when more than one fillcolor is wanted.<br />in that case use for example <a href='#replyformat'>replyformat 10</a> ... reply=x1:y1:color1,x2:y2:color2...<br />the colors will restart at the first color, when there are more fill-clicks than multi-fill-colors<br />if more control over the used colours is wanted , see command <a href='#colorpalette'>colorpalette color1,color2...</a>
  2605.         */
  2606.             if( use_tooltip == 1 ){canvas_error("command 'multidraw' is incompatible with command 'intooltip tip_text'");}
  2607.             fprintf(js_include_file,"var multifillcolors = [");
  2608.             while( ! done ){
  2609.                 temp = get_color(infile,1);
  2610.                 fprintf(js_include_file,"\"%s\",",temp);
  2611.             }
  2612.             fprintf(js_include_file,"\"0,0,0\"];");/* add black to avoid trouble with dangling comma... */
  2613.             break;
  2614.  
  2615.         case MULTIFILLOPACITY:
  2616.         /*
  2617.          @ multifillopacity fill_opacity_1,fill_opacity_2,...,fill_opacity_8
  2618.          @ float values 0 - 1 or integer values 0 - 255
  2619.          @ use before command <a href='#multidraw'>'multidraw'</a>
  2620.          @ if not set all fill opacity_ will be set by previous command <em>'opacity int,int'</em> and keyword <em>'filled'</em>
  2621.          @ use these up to 7 different stroke opacities for the draw primitives used by command <em>'multidraw obj_type_1,obj_type_2...obj_type_y</em>
  2622.          @ wims will not check the amount or validity of your input
  2623.          @ always use the same sequence as is used for 'multidraw'
  2624.         */
  2625.             if( use_tooltip == 1 ){canvas_error("command 'multidraw' is incompatible with command 'intooltip tip_text'");}
  2626.             temp = get_string(infile,1);
  2627.             temp = str_replace(temp,",","\",\"");
  2628.             fprintf(js_include_file,"var multifillopacity = [\"%s\"];",temp);
  2629.             break;
  2630.         case MULTISNAPTOGRID:
  2631.         /*
  2632.          @ multisnaptogrid 0,1,1
  2633.          @ meaning draw objects no. 2 (circle) and 3 (segments), in the list of command like <em>'multifill points,circle,segments'</em>, will snap to the xy-grid (default 1 in x/y-coordinate system: see command <a href='#snaptogrid'>'snaptogrid'</a>)
  2634.          @ only the x-values snap_to_grid: <em>multisnaptogrid 0,2,2</em>
  2635.          @ only the y-values snap_to_grid: <em>multisnaptogrid 0,3,3</em>
  2636.          @ mixing allowed: <em>multisnaptogrid 1,2,3,0</em> e.g. the first object will snap to the xy-grid, the second draw object will snap to the x-values, the third object will snap to the y-valeus of the grid, the last object may be placed anywhere on the canvas
  2637.          @ use before command <a href='#multidraw'>'multidraw'</a>
  2638.          @ if not set all objects will be set 'no snap'...<br />unless a generic command 'snaptogrid' was given before command 'multidraw'
  2639.          @ commands <a href='#xsnaptogrid'>'xsnaptogrid'</a>, <a href='#ysnaptogrid'>'ysnaptogrid'</a>, <a href='#snaptofunction'>'snaptofunction'</a> and <a href='#snaptopoints'>'snaptopoints</a> x1,y1,x2,y2...' are <b>not</b> supported at this time
  2640.          @ always use the same sequence as is used for 'multidraw'
  2641.          @ wims will <b>not</b> check if the number of 0 or 1's matches the amount of draw primitives...
  2642.         */
  2643.             if( use_tooltip == 1 ){canvas_error("command 'multidraw' is incompatible with command 'intooltip tip_text'");}
  2644.             temp = get_string(infile,1);
  2645.             temp = str_replace(temp,",","\",\"");
  2646.             fprintf(js_include_file,"var multisnaptogrid = [\"%s\"];",temp);
  2647.             reset();/* if command 'dashed' was given...reset to not-dashed */
  2648.             break;
  2649.         case MULTISTROKECOLORS:
  2650.         /*
  2651.          @ multistrokecolors color_name_1,color_name_2,...,color_name_8
  2652.          @ use before command <a href='#multidraw'>'multidraw'</a>
  2653.          @ if not set all colors will be 'stroke_color' , 'stroke_opacity'
  2654.          @ use these up to 6 colors for the draw primitives used by command <em>'multidraw obj_type_1,obj_type_2...obj_type_7</em>
  2655.          @ wims will <b>not</b> check if the number of colours matches the amount of draw primitives...
  2656.          @ always use the same sequence as is used for 'multidraw'
  2657.         */
  2658.             if( use_tooltip == 1 ){canvas_error("command 'multidraw' is incompatible with command 'intooltip tip_text'");}
  2659.             fprintf(js_include_file,"var multistrokecolors = [");
  2660.             while( ! done ){
  2661.                 temp = get_color(infile,1);
  2662.                 fprintf(js_include_file,"\"%s\",",temp);
  2663.             }
  2664.             fprintf(js_include_file,"\"0,0,0\"];");/* add black to avoid trouble with dangling comma... */
  2665.             break;
  2666.         case MULTISTROKEOPACITY:
  2667.         /*
  2668.          @ multistrokeopacity stroke_opacity_1,stroke_opacity_2,...,stroke_opacity_7
  2669.          @ float values 0 - 1 or integer values 0 - 255
  2670.          @ use before command <a href='#multidraw'>'multidraw'</a>
  2671.          @ if not set all stroke opacity_ will be set by previous command <em>'opacity int,int'</em>
  2672.          @ use these up to 7 different stroke opacities for the draw primitives used by command <em>'multidraw obj_type_1,obj_type_2...obj_type_7</em>
  2673.          @ wims will not check the amount or validity of your input
  2674.          @ always use the same sequence as is used for 'multidraw'
  2675.         */
  2676.             if( use_tooltip == 1){canvas_error("command 'multidraw' is incompatible with command 'intooltip tip_text'");}
  2677.             temp = get_string(infile,1);
  2678.             temp = str_replace(temp,",","\",\"");
  2679.             fprintf(js_include_file,"var multistrokeopacity = [\"%s\"];",temp);
  2680.             break;
  2681.  
  2682.         case MULTIUSERINPUT:
  2683.         /*
  2684.         @ multiuserinput 0,1,1,0
  2685.         @ meaning, when the command 'multidraw' is used <br />multidraw circles,points,lines,triangles<br />objects 'points' and 'lines' may additionally be 'drawn' by direct input (inputfields)<br/>all other objects must be drawn with a mouse
  2686.         @ in case of circle | circles a third inputfield for Radius (R) is added.<br />the radius must be in the x/y coordinate system (x-range) and <b>not</b> in pixels...students don't think in pixels.<br />note: R-values will not snap-to-grid
  2687.         @ in case of line(s) | segment(s) | arrow(s) the user should write <b>x1:y1</b> in the first inputfield and <b/>x2:y2</b> in the second.<br />These 'hints' are pre-filled into the input field.<br />other coordinate delimiters are ";" and "," e.g. <b>x1;y1</b> or <b>x1,y1</b>.<br />An error message (alert box) will popup when things are not correctly...
  2688.         @ in case of a triangle | poly3, three inputfields are provided.
  2689.         @ in case of 'text' and multiuserinput=1 , 3 inputfields will be shown : x,y,text
  2690.         @ in case of 'text' and multiuserinput=0 , 1 inputfield will be shown : text ... a mouse click will place the text on the canvas.
  2691.         @ may be styled using command <a href="#inputstyle">"inputstyle"</a>
  2692.         @ an additional button 'stop drawing' may be used to combine userbased drawings with 'drag&amp;drop' or 'onclick' elements
  2693.         @ when exercise if finished (status=done) the buttons will not be shown.<br />To override this default behaviour use command / keyword 'status'
  2694.         @ use before command <a href='#multidraw'>'multidraw'</a>
  2695.         @ always use the same sequence as is used for 'multidraw'
  2696.         */
  2697.             /* simple rawmath and input check */
  2698.             if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  2699.             temp = get_string(infile,1);
  2700.             temp = str_replace(temp,",","\",\"");
  2701.             fprintf(js_include_file,"var multiuserinput = [\"%s\"];",temp);
  2702.             break;
  2703.  
  2704.         case NOXAXIS:
  2705.         /*
  2706.         @ noaxis
  2707.         @ keyword
  2708.         @ if set, the automatic x-axis numbering will be ignored
  2709.         @ use command <a href="#axis">axis</a> to have a visual x/y-axis lines (see command <a href="grid">grid</a>
  2710.         @ to be used before command grid (see <a href="#grid">command grid</a>)
  2711.         */
  2712.             fprintf(js_include_file,"x_strings = {};x_strings_up = [];\n");
  2713.             use_axis_numbering = -1;
  2714.             break;
  2715.         case NOYAXIS:
  2716.         /*
  2717.         @ noayis
  2718.         @ keyword
  2719.         @ if set, the automatic y-axis numbering will be ignored
  2720.         @ use command <a href="#axis">axis</a> to have a visual x/y-axis lines (see command <a href="grid">grid</a>
  2721.         @ to be used before command grid (see <a href="#grid">command grid</a>)
  2722.         */
  2723.             fprintf(js_include_file,"y_strings = {};\n");
  2724.             break;
  2725.         case NUMBERLINE:
  2726.         /*
  2727.         @ numberline x0,x1,xmajor,xminor,y0,y1
  2728.         @ numberline is using xrange/yrange system for all dimensions
  2729.         @ multiple numberlines are allowed ; combinations with command <a href='#grid'>grid</a> is allowed; multiple commands <a href='#xaxis'>xaxis numbering</a> are allowed
  2730.         @ x0 is start x-value in xrange
  2731.         @ x1 is end x-value in xrange
  2732.         @ xmajor is step for major division
  2733.         @ xminor is divisor of xmajor; using small (30% of major tick) tick marks: this behaviour is 'hardcoded'
  2734.         @ is xminor is an even divisor, an extra tickmark (60% of major tick) is added to the numberline : this behaviour is 'hardcoded'
  2735.         @ y0 is bottom of numberline; y1 endpoint of major tics
  2736.         @ use command <a href="#linewidth">linewidth</a> to control appearance
  2737.         @ use <a href="#strokecolor">strokecolor</a> and <a href="#opacity">opacity</a> to controle measure line
  2738.         @ for all ticks linewidth and color / opacity are identical.
  2739.         @ if command <a href="#xaxis">xaxis</a> or <a href="#xaxisup">xaxisup</a> is not defined, the labeling will be on major ticks: x0...x1
  2740.         @ use <a href="#fontfamily">fontfamily</a> and <a href="#fontcolor">fontcolor</a> to control fonts settings
  2741.         @ may be used together with <a href="#userdraw">userdraw</a> , <a href="#multidraw">multidraw</a> and <a href="#drag">user drag</a> command family for the extra object drawn onto the numberline
  2742.         @ <a href="#snaptogrid">snaptogrid, snaptopoints etc</a> and <a href="#zoom">zooming and panning</a> is supported
  2743.         @ onclick and dragging of the numberline are not -yet- supported
  2744.         @ note: incase of multiple numberlines, make sure the numberline without special x-axis numbering (e.g. ranging from xmin to xmax) comes first !
  2745.         @%numberline%size 400,400%xrange -10,10%yrange -10,10%precision 1%strokecolor black%numberline -8,8,1,6,-4,-3.5%strokecolor red%xaxis -4:AA:-2:BB:2:CC:4:DD%numberline -8,8,1,2,4,4.5%strokecolor green%xaxisup -4:AAA:-2:BBB:2:CCC:4:DDD%numberline -8,8,1,3,2,2.5%strokecolor blue%xaxis -4:AAAA:-2:BBBB:2:CCCC:4:DDDD%numberline -8,8,1,4,0,0.5%strokecolor brown%xaxis -4:AAAAA:-2:BBBBB:2:CCCCC:4:DDDDD%numberline -8,8,1,5,-2,-1.5%zoom red      
  2746.         */
  2747.             if( js_function[DRAW_NUMBERLINE] != 1 ){ js_function[DRAW_NUMBERLINE] = 1;}
  2748.             for(i=0;i<6;i++){
  2749.                 switch(i){
  2750.                     case 0: double_data[0] = get_real(infile,0);break;/* xmin */
  2751.                     case 1: double_data[1] = get_real(infile,0);break;/* xmax */
  2752.                     case 2: double_data[2] = get_real(infile,0);break;/* xmajor */
  2753.                     case 3: double_data[3] = get_real(infile,0);break;/* xminor */
  2754.                     case 4: double_data[4] = get_real(infile,0);break;/* ymin */
  2755.                     case 5: double_data[5] = get_real(infile,1);/* ymax */
  2756.                             /*
  2757.                             var draw_numberline%d = function(canvas_type,xmin,xmax,xmajor,xminor,ymin,ymax,linewidth,strokecolor,strokeopacity,fontfamily,fontcolor);
  2758.                             */
  2759.                             fprintf(js_include_file,"snap_x = %f;snap_y = %f;",double_data[2] / double_data[3],double_data[5] - double_data[4] );
  2760.                             string_length = snprintf(NULL,0,"\ndraw_numberline(%d,%d,%f,%f,%f,%f,%f,%f,%d,\"%s\",%f,\"%s\",\"%s\",%d);   ",NUMBERLINE_CANVAS+numberline_cnt,use_axis_numbering,double_data[0],double_data[1],double_data[2],double_data[3],double_data[4],double_data[5],line_width,stroke_color,stroke_opacity,font_family,font_color,precision);
  2761.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2762.                             snprintf(tmp_buffer,string_length,"\ndraw_numberline(%d,%d,%f,%f,%f,%f,%f,%f,%d,\"%s\",%f,\"%s\",\"%s\",%d);  ",NUMBERLINE_CANVAS+numberline_cnt,use_axis_numbering,double_data[0],double_data[1],double_data[2],double_data[3],double_data[4],double_data[5],line_width,stroke_color,stroke_opacity,font_family,font_color,precision);
  2763.                             add_to_buffer(tmp_buffer);
  2764.                             numberline_cnt++;
  2765.                             break;
  2766.                     default:break;
  2767.                 }
  2768.             }
  2769.             reset();
  2770.             break;
  2771.  
  2772.             break;
  2773.         case OPACITY:
  2774.         /*
  2775.         @ opacity 0-255,0-255
  2776.         @ opacity 0.0 - 1.0,0.0 - 1.0
  2777.         @ alternative : transparent
  2778.         @ first item is stroke opacity, second is fill opacity
  2779.         @%opacity%size 400,400%xrange -10,10%yrange -10,10%fillcolor red%opacity 255,50%fcircle 0,0,100,blue
  2780.         */
  2781.             for(i = 0 ; i<2;i++){
  2782.                 switch(i){
  2783.                     case 0: double_data[0]= get_real(infile,0);break;
  2784.                     case 1: double_data[1]= get_real(infile,1);break;
  2785.                     default: break;
  2786.                 }
  2787.             }
  2788.             if( double_data[0] > 255 ||  double_data[1] > 255  ){ canvas_error("opacity [0 - 255] , [0 - 255] ");}/* typo or non-RGB ? */
  2789.             if( double_data[0] > 1 ){ stroke_opacity = (double) (0.0039215*double_data[0]); }else{ stroke_opacity = 0.0;} /* 0.0 - 1.0 */
  2790.             if( double_data[1] > 1 ){ fill_opacity = (double) (0.0039215*double_data[1]); }else{ fill_opacity = 0.0;} /* 0.0 - 1.0 */
  2791.             break;
  2792.  
  2793.         case ONCLICK:
  2794.         /*
  2795.          @ onclick
  2796.          @ keyword (no arguments required)
  2797.          @ if the next object is clicked, its 'object onclick_or_drag sequence number' in fly script is returned <br /> by javascript:read_canvas();
  2798.          @ onclick seqeuence numbering starts at '0'.<br />e.g. if there are 6 objects set onclick, the first onclick object will have id-number '0', the last id-number '5'
  2799.          @ line based objects will show an increase in line width<br />font based objects will show the text in 'bold' when clicked.
  2800.          @ the click zone (accuracy) is determined by 2&times; the line width of the object
  2801.          @ onclick and <a href="#drag">drag x|y|xy</a> may be combined in a single flyscript <br />(although a single object can <b>not</b> be onclick and draggable at the same time...)
  2802.          @ note: not all objects may be set onclick
  2803.          @%onclick%size 400,400%xrange -10,10%yrange -10,10%opacity 255,60%linewidth 3%onclick%fcircles blue,-3,3,1,1,2,2,3,1,1%onclick%ftriangles red,-4,-4,-4,0,-3,-2,0,0,4,0,2,-4%onclick%frects green,-4,4,-2,2,1,-1,3,-4
  2804.         */
  2805.             fprintf(js_include_file,"use_dragdrop_reply = true;");
  2806.             onclick = 1;
  2807.  
  2808.             break;
  2809.  
  2810.         case PARALLEL:
  2811.         /*
  2812.          @ parallel x1,y1,x2,y2,dx,dy,n,[colorname or #hexcolor]
  2813.          @ can <b>not</b> be set "onclick" or "drag xy"
  2814.          @%parallel%size 400,400%xrange -10,10%yrange -10,10%parallel -5,5,-4,-5,0.25,0,40,red
  2815.         */
  2816.             for( i = 0;i < 8; i++ ){
  2817.                 switch(i){
  2818.                     case 0: double_data[0] = get_real(infile,0);break; /* x1-values  -> x-pixels*/
  2819.                     case 1: double_data[1] = get_real(infile,0);break; /* y1-values  -> y-pixels*/
  2820.                     case 2: double_data[2] = get_real(infile,0);break; /* x2-values  -> x-pixels*/
  2821.                     case 3: double_data[3] = get_real(infile,0);break; /* y2-values  -> y-pixels*/
  2822.                     case 4: double_data[4] = xmin + get_real(infile,0);break; /* xv -> x-pixels */
  2823.                     case 5: double_data[5] = ymax + get_real(infile,0);break; /* yv -> y-pixels */
  2824.                     case 6: int_data[0] = (int) (get_real(infile,0));break; /* n  */
  2825.                     case 7: stroke_color=get_color(infile,1);/* name or hex color */
  2826.                     decimals = find_number_of_digits(precision);
  2827.                     fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,11,[%.*f,%.*f,%.*f],[%.*f,%.*f,%.*f],[%d,%d,%d],[%d,%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[2],decimals,double_data[4],decimals,double_data[1],decimals,double_data[3],decimals,double_data[5],int_data[0],int_data[0],int_data[0],int_data[0],int_data[0],int_data[0],line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  2828.                     if(onclick > 0){click_cnt++;}
  2829.                     /* click_cnt++*/;
  2830.                     reset();
  2831.                     break;
  2832.                     default: break;
  2833.                 }
  2834.             }
  2835.             break;
  2836.  
  2837.  
  2838.         case PLOTSTEPS:
  2839.             /*
  2840.              @ plotsteps a_number
  2841.              @ default 150
  2842.              @ only used for commands <a href="#curve">"curve / plot"</a> and  <a href="#levelcurve">"levelcurve"</a>
  2843.              @ use with care !
  2844.             */
  2845.             plot_steps = (int) (get_real(infile,1));
  2846.             break;
  2847.        
  2848.         case POINT:
  2849.         /*
  2850.         @ point x,y,color
  2851.         @ draw a single point at (x;y) in color 'color'
  2852.         @ use command 'linewidth int'  to adust size
  2853.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
  2854.         @ will not resize on zooming <br />(command 'circle x,y,r,color' will resize on zooming)
  2855.         @ attention: in case of command <a href="#rotate">'rotate angle'</a> a point has rotation center (0:0) in x/y-range
  2856.         @%point%size 400,400%xrange -10,10%yrange -10,10%opacity 255,255%linewidth 1%onclick%point 0,0,red%linewidth 2%onclick%point 1,1,blue%linewidth 3%onclick%point 3,3,green%linewidth 4%point 4,4,orange
  2857.         */
  2858.             for(i=0;i<3;i++){
  2859.                 switch(i){
  2860.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  2861.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  2862.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  2863.                     decimals = find_number_of_digits(precision);
  2864.                     fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,2,[%.*f],[%.*f],[%.2f],[%d],%.2f,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[1],1.5*line_width,line_width,1.5*line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,1,0,0,0,use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  2865.                     /* click_cnt++; */
  2866.                     if(onclick > 0){click_cnt++;}
  2867.                     break;
  2868.                     default: break;
  2869.                 }
  2870.             }
  2871.             reset();
  2872.             break;
  2873.  
  2874.         case POINTS:
  2875.         /*
  2876.         @ points color,x1,y1,x2,y2,...,x_n,y_n
  2877.         @ draw multiple points at given coordinates in color 'color'
  2878.         @ use command 'linewidth int'  to adust size
  2879.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> individually (!)
  2880.         @ attention: in case of command <a href="#rotate">'rotate angle'</a> the points have rotation center (0:0) in x/y-range
  2881.         @%points_1%size 400,400%xrange -10,10%yrange -10,10%opacity 255,255%snaptogrid%linewidth 1%drag xy%points red,0,0,1,1,2,2,3,3%drag x%points blue,0,1,1,2,2,3,3,4
  2882.         @%points_2%size 400,400%xrange -10,10%yrange -10,10%opacity 255,255%linewidth 1%onclick%points red,0,0,1,1,2,2,3,3%onclick%points blue,0,1,1,2,2,3,3,4
  2883.         */
  2884.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  2885.             fill_color = stroke_color;
  2886.             i=0;
  2887.             while( ! done ){     /* get next item until EOL*/
  2888.                 if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
  2889.                 if(i%2 == 0 ){
  2890.                     double_data[i] = get_real(infile,0); /* x */
  2891.                 }
  2892.                 else
  2893.                 {
  2894.                     double_data[i] = get_real(infile,1); /* y */
  2895.                 }
  2896.                 i++;
  2897.             }
  2898.             decimals = find_number_of_digits(precision);
  2899.             for(c = 0 ; c < i-1 ; c = c+2){
  2900.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,2,[%.*f],[%.*f],[%.2f],[%d],%.2f,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[c],decimals,double_data[c+1],1.5*line_width,line_width,1.5*line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,1,0,0,0,use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  2901.                 /* click_cnt++; */
  2902.                 if(onclick > 0){click_cnt++;}
  2903.             }
  2904.             reset();
  2905.             break;
  2906.  
  2907.         case POLY:
  2908.         /*
  2909.         @ poly color,x1,y1,x2,y2...x_n,y_n
  2910.         @ polygon color,x1,y1,x2,y2...x_n,y_n
  2911.         @ draw closed polygon
  2912.         @ use command 'fpoly' to fill it or use keyword <a href='#filled'>'filled'</a>
  2913.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
  2914.         @%polygon_1%size 400,400%xrange -10,10%yrange -10,10%opacity 255,25%fillcolor orange%filled%linewidth 2%drag xy%snaptogrid%poly blue,0,0,1,3,3,1,2,4,-1,3
  2915.         @%polygon_2%size 400,400%xrange -10,10%yrange -10,10%opacity 255,25%fillcolor orange%filled%linewidth 1%onclick%poly green,0,0,1,3,3,1,2,4,-1,3
  2916.         */
  2917.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  2918.             i=0;
  2919.             c=0;
  2920.             while( ! done ){     /* get next item until EOL*/
  2921.                 if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
  2922.                 for( c = 0 ; c < 2; c++){
  2923.                     if(c == 0 ){
  2924.                         double_data[i] = get_real(infile,0);
  2925.                         i++;
  2926.                     }
  2927.                     else
  2928.                     {
  2929.                         double_data[i] = get_real(infile,1);
  2930.                         i++;
  2931.                     }
  2932.                 }
  2933.             }
  2934.             /* draw path :  closed & optional filled */
  2935.                 decimals = find_number_of_digits(precision);
  2936.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,5,%s,[30],[30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,double_xy2js_array(double_data,i,decimals),line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  2937.                 if(onclick > 0){click_cnt++;}
  2938.                 /* click_cnt++; */
  2939.                 reset();
  2940.             break;
  2941.  
  2942.         case POLYLINE:
  2943.         /*
  2944.         @ polyline color,x1,y1,x2,y2...x_n,y_n
  2945.         @ brokenline color,x1,y1,x2,y2...x_n,y_n
  2946.         @ path color,x1,y1,x2,y2...x_n,y_n
  2947.         @ remark: there is <b>no</b> command polylines | brokenlines | paths ... just use multiple commands "polyline ,x1,y1,x2,y2...x_n,y_n"
  2948.         @ remark: there are commands "userdraw path(s),color" and "userdraw polyline,color"... these are two entirely different things !<br />the path(s) userdraw commands may be used for freehand drawing(s)<br />the polyline userdraw command is analogue to this polyline|brokenline command
  2949.         @ the command interconnects the points in the given order with a line (canvasdraw will not close the drawing: use command <a href="#poly">polygon</a> for this)
  2950.         @ use command <a href='#segments'>'segments'</a> for a series of segments.<br />these may be clicked/dragged individually
  2951.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
  2952.         @%polyline_1%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%drag xy%snaptogrid%polyline blue,0,0,1,3,3,1,2,4,-1,3
  2953.         @%polyline_2%size 400,400%xrange -10,10%yrange -10,10%linewidth 1%onclick%polyline green,0,0,1,3,3,1,2,4,-1,3
  2954.         */
  2955.        
  2956.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  2957.             i=0;
  2958.             c=0;
  2959.             while( ! done ){     /* get next item until EOL*/
  2960.                 if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
  2961.                 for( c = 0 ; c < 2; c++){
  2962.                     if(c == 0 ){
  2963.                         double_data[i] = get_real(infile,0);
  2964.                         i++;
  2965.                     }
  2966.                     else
  2967.                     {
  2968.                         double_data[i] = get_real(infile,1);
  2969.                         i++;
  2970.                     }
  2971.                 }
  2972.             }
  2973.             /* draw path : not closed & not filled */
  2974.             decimals = find_number_of_digits(precision);
  2975.             fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,4,%s,[30],[30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,double_xy2js_array(double_data,i,decimals),line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  2976.             if(onclick > 0){click_cnt++;}
  2977.             /* click_cnt++;*/
  2978.             reset();
  2979.             break;
  2980.  
  2981.         case POPUP:
  2982.             /*
  2983.             @ popup
  2984.             @ keyword (no arguments)
  2985.             @ if fly-script starts with keyword 'popup', the canvas image will be exclusively in a popup window (xsize px &times; ysize px)
  2986.             @ if keyword 'popup' is used after command 'size xsize,ysize' the canvas will also be displayed in a popup window with size 'xsize &times; ysize'
  2987.             @ the popup window will be embedded into the page as a 'normal' image , when 'status=done' ; override with keyword <a href="#status"> 'nostatus'</a>
  2988.             @ to access the read_canvas and read_dragdrop functions in a popup window, use:<br /><em><br /> function read_all(){<br /> if( typeof popup !== 'undefined' ){<br />  var fun1 = popup['read_dragdrop'+canvas_scripts[0]];<br />  var fun2 = popup['read_canvas'+canvas_scripts[0]];<br />   popup.close();<br />  return "dragdrop="+fun1()+"\\ncanvas="+fun2();<br /> };<br /></em>
  2989.             @ to set a canvasdraw produced <a href="#clock">clock</a> or multiple clocks...use something like:<br /><em>popup.set_clock(clock_id,type,diff);</em><br />as js-function for a button (or something else) in your document page.<br />wherein <b>clock_id</b> starts with 0 for the first clock<br /><b>type</b> is 1 for Hours,2 for Minutes and 3 for Seconds<br /><b>diff</b> is the increment (positive or negative) per click
  2990.             @%popup%popup%size 400,400%xrange -2*pi,2*pi%yrange -5,5%precision 0%axis%axisnumbering%opacity 100,190%grid 1,1,grey,2,2,5,black%linewidth 4%fillcolor blue%trange -pi,pi%animate%linewidth 1%precision 1000%jsplot red,4*cos(2*x),2*sin(3*x-pi/6)%strokecolor green%functionlabel f(x)=%userinput function
  2991.             */
  2992.             use_tooltip = 2;
  2993.             break;
  2994.  
  2995.         case PROTRACTOR:
  2996.         /*
  2997.          @ protractor x,y,x_width,type,mode,use_a_scale
  2998.          @ x,y are the initial location
  2999.          @ x_width : give the width in x-coordinate system (e.g. not in pixels !)
  3000.          @ type = 1 : a triangle range  0 - 180<br />type = 2 : a circle shape 0 - 360
  3001.          @ mode : use -1 to set the protractor interactive (mouse movement of protractor)<br />use mode = '0&deg; - 360&deg;' to set the protractor with a static angle of some value
  3002.          @ if the value of the user_rotation angle is to be shown...use command <a href='#display'>display degree,color,fontsize</a><a href='#display'>display radian,color,fontsize</a>
  3003.          @ use_scale = 1 : the protractor will have some scale values printed; use_scale=0 to disable
  3004.          @ the rotating direction of the mouse around the protractor determines the clockwise/ counter clockwise rotation of the protractor...
  3005.          @ commands <em>stroke_color | fill_color | linewidth | opacity | font_family</em> will determine the looks of the protractor.
  3006.          @ default replyformat: reply[0] = x;reply[1] = y;reply[2] = angle_in_radians<br />use command 'precision' to set the reply precision.
  3007.          @ if combined with a ruler, use replyformat = 32
  3008.          @ command <em>snap_to_grid</em> may be used to assist the pupil at placing the protractor
  3009.          @ when using command 'zoom' , pay <b>attention</b> to the size and symmetry of your canvas<br />...to avoid a partial image, locate the start position near the center of the visual canvas<br /><em>technical:<br /> the actual 'protractor' is just a static generated image in a new canvas-memory<br />This image is only generated once, and a copy of its bitmap is translated & rotated onto the visible canvas.<br />That is the reason for the 'high-speed dragging and rotating'.<br />I've limited its size to xsize &times; ysize e.g. the same size as the visual canvas... </em>
  3010.          @ only one protractor allowed (for the time being)
  3011.          @ usage: first left click on the protractor will activate dragging;<br />a second left click will activate rotating (just move mouse around)<br />a third click will freeze this position and the x/y-coordinate and angle in radians will be stored in reply(3)<br />a next click will restart this sequence...
  3012.          @%protractor%size 400,400%xrange -5,10%yrange -5,10%hline 0,0,black%vline 0,0,black%fillcolor orange%opacity 255,40%protractor 2,-2,6,0,-1,1,1
  3013.         */
  3014.             for( i = 0;i < 6; i++ ){
  3015.                 switch(i){
  3016.                     case 0: double_data[0] = get_real(infile,0);break; /* x-center */
  3017.                     case 1: double_data[1] = get_real(infile,0);break; /* y-center */
  3018.                     case 2: double_data[2] = get_real(infile,0);break; /* x-width */
  3019.                     case 3: int_data[0] = (int)(get_real(infile,0));break; /* type: 1==triangle 2 == circle */
  3020.                     case 4: int_data[1] = (int)(get_real(infile,0));break; /* passive mode == 0; active mode == -1 */
  3021.                     case 5: int_data[2] = (int)(get_real(infile,1)); /* use scale */
  3022.                     decimals = find_number_of_digits(precision);
  3023.                     if( int_data[1] < 0 ){ js_function[JS_FIND_ANGLE] = 1;}
  3024.                     add_js_protractor(js_include_file,canvas_root_id,int_data[0],double_data[0],double_data[1],double_data[2],font_family,stroke_color,stroke_opacity,fill_color,fill_opacity,line_width,int_data[2],int_data[1]);
  3025.  
  3026.                     string_length = snprintf(NULL,0,";protractor%d(); ",canvas_root_id);
  3027.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3028.                     snprintf(tmp_buffer,string_length,";protractor%d(); ",canvas_root_id);
  3029.                     add_to_buffer(tmp_buffer);
  3030.                     reply_precision = precision;
  3031.                     /* no reply from protractor if non-interactive */
  3032.                     if( reply_format == 0 && int_data[1] == -1 ){reply_format = 30;}
  3033.                     break;
  3034.                     default: break;
  3035.                 }
  3036.             }
  3037.             break;
  3038.  
  3039.         case PIXELS:
  3040.         /*
  3041.         @ pixels color,x1,y1,x2,y2,x3,y3...
  3042.         @ draw rectangular "points" with diameter 1 pixel
  3043.         @ pixels can <b>not</b> be dragged or clicked
  3044.         @ "pixelsize = 1" may be changed by command "pixelsize int"
  3045.         @%pixels%size 400,400%opacity 255,255%pixelsize 5%pixels red,1,1,2,2,3,3,4,4,5,5,10,10,20,20,30,30,40,40,50,50,60,60,70,70,80,80,90,90,100,100,120,120,140,140,160,160,180,180,200,200,240,240,280,280,320,320,360,360,400,400%#NOTE pixelsize=5...otherwise you will not see them clearly...
  3046.         */
  3047.             if( js_function[DRAW_PIXELS] != 1 ){ js_function[DRAW_PIXELS] = 1;}
  3048.             stroke_color=get_color(infile,0);
  3049.             i=0;
  3050.             c=0;
  3051.             while( ! done ){     /* get next item until EOL*/
  3052.                 if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
  3053.                 for( c = 0 ; c < 2; c++){
  3054.                     if(c == 0 ){
  3055.                         double_data[i] = get_real(infile,0);
  3056.                         i++;
  3057.                     }
  3058.                     else
  3059.                     {
  3060.                         double_data[i] = get_real(infile,1);
  3061.                         i++;
  3062.                     }
  3063.                 }
  3064.             }
  3065.             decimals = find_number_of_digits(precision);
  3066.             /*  *double_xy2js_array(double xy[],int len,int decimals) */
  3067.             string_length = snprintf(NULL,0,  "draw_setpixel(%s,\"%s\",%.2f,%d);\n",double_xy2js_array(double_data,i,decimals),stroke_color,stroke_opacity,pixelsize);
  3068.             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3069.             snprintf(tmp_buffer,string_length,"draw_setpixel(%s,\"%s\",%.2f,%d);\n",double_xy2js_array(double_data,i,decimals),stroke_color,stroke_opacity,pixelsize);
  3070.             add_to_buffer(tmp_buffer);
  3071.             reset();
  3072.             break;
  3073.  
  3074.         case PIXELSIZE:
  3075.         /*
  3076.         @ pixelsize int
  3077.         @ in case you want to deviate from default pixelsize = 1(...)
  3078.         @ pixelsize 100 is of course a filled rectangle 100px &times; 100px
  3079.         */
  3080.             pixelsize = (int) get_real(infile,1);
  3081.         break;
  3082.  
  3083.         case PIECHART:
  3084.         /*
  3085.         @ piechart xc,yc,radius,'data+colorlist'
  3086.         @ (xc : yc) center of circle diagram in xrange/yrange
  3087.         @ radius in pixels
  3088.         @ data+color list: a colon separated list of raw data and corresponding colours<br />canvasdraw will not check validity of colornames...<br />in case of trouble look into javascript debugging of your browser
  3089.         @ example data+colorlist : 32:red:65:green:23:black:43:orange:43:yellow:14:white
  3090.         @ the number of colors must match the number of data.
  3091.         @ if defined <a href='#fillpattern'>'fillpattern some_pattern'</a> then the pie pieces will be filled with the respective color and a fill pattern...<br />the pattern is cycled from the 4 pattern primitives: grid,hatch,diamond,dot,grid,hatch,diamond,dot,...
  3092.         @ use command "<a href='#opacity'>'opacity'</a> to adjust fill_opacity of colours
  3093.         @ use command <a href='#legend'>'legend'</a> to automatically create a legend <br />using the same colours as pie segments<br />unicode allowed in legend<br />expect javascript trouble if the amount of 'pie-slices', 'pie-colours' 'pie-legend-titles' do not match<br />a javascript console is your best friend...<br />use command 'fontfamily' to set the font of the legend.
  3094.         @%piechart%size 300,200%xrange -10,10%yrange -10,10%legend cars:motorcycles:bicycles:trikes%opacity 255,120%piechart -5,0,75,22:red:8:blue:63:green:7:purple%
  3095.         */
  3096.             if( js_function[DRAW_PIECHART] != 1 ){ js_function[DRAW_PIECHART] = 1;}
  3097.             for(i=0;i<5;i++){
  3098.                 switch(i){
  3099.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  3100.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  3101.                     case 2: int_data[2] = (int)(get_real(infile,1));break;/* radius*/
  3102.                     case 3: temp = get_string(infile,1);
  3103.                             if( strstr( temp, ":" ) != 0 ){ temp = str_replace(temp,":","\",\"");}
  3104.                             string_length = snprintf(NULL,0,"draw_piechart(%d,%d,%d,%d,[\"%s\"],%.2f,%d,\"%s\",%d);\n",PIECHART,int_data[0],int_data[1],int_data[2],temp,fill_opacity,legend_cnt,font_family,use_filled);
  3105.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3106.                             snprintf(tmp_buffer,string_length,"draw_piechart(%d,%d,%d,%d,[\"%s\"],%.2f,%d,\"%s\",%d);\n",PIECHART,int_data[0],int_data[1],int_data[2],temp,fill_opacity,legend_cnt,font_family,use_filled);
  3107.                             add_to_buffer(tmp_buffer);
  3108.                            break;
  3109.                     default:break;
  3110.                 }
  3111.             }
  3112.             reset();
  3113.         break;
  3114.  
  3115.         case RAYS:
  3116.         /*
  3117.          @ rays color,xc,yc,x1,y1,x2,y2,x3,y3...x_n,y_n
  3118.          @ draw rays in color 'color' and center (xc:yc)
  3119.          @ may be set draggable or onclick (every individual ray)
  3120.          @%rays_onclick%size 400,400%xrange -10,10%yrange -10,10%onclick%rays blue,0,0,3,9,-3,5,-4,0,4,-9,7,9,-8,1,-1,-9
  3121.          @%rays_drag_xy%size 400,400%xrange -10,10%yrange -10,10%drag xy%rays blue,0,0,3,9,-3,5,-4,0,4,-9,7,9,-8,1,-1,-9
  3122.         */
  3123.             stroke_color=get_color(infile,0);
  3124.             fill_color = stroke_color;
  3125.             double_data[0] = get_real(infile,0);/* xc */
  3126.             double_data[1] = get_real(infile,0);/* yc */
  3127.             i=2;
  3128.             while( ! done ){     /* get next item until EOL*/
  3129.                 if(i > MAX_INT - 1){canvas_error("in command rays too many points / rays in argument: repeat command multiple times to fit");}
  3130.                 if(i%2 == 0 ){
  3131.                     double_data[i] = get_real(infile,0); /* x */
  3132.                 }
  3133.                 else
  3134.                 {
  3135.                     double_data[i] = get_real(infile,1); /* y */
  3136.                 }
  3137.             fprintf(js_include_file,"/* double_data[%d] = %f */\n",i,double_data[i]);
  3138.                 i++;
  3139.             }
  3140.  
  3141.             if( i%2 != 0 ){canvas_error("in command rays: unpaired x or y value");}
  3142.             decimals = find_number_of_digits(precision);
  3143.             for(c=2; c<i;c = c+2){
  3144.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,4,[%.*f,%.*f],[%.*f,%.*f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[c],decimals,double_data[1],decimals,double_data[c+1],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  3145.                 /* click_cnt++; */
  3146.                 if(onclick > 0){click_cnt++;}
  3147.             }
  3148.             reset();
  3149.             break;
  3150.  
  3151.         case RECT:
  3152.         /*
  3153.         @ rect x1,y1,x2,y2,color
  3154.         @ use command 'frect x1,y1,x2,y2,color' for a filled rectangle
  3155.         @ use command/keyword  <a href='#filled'>'filled'</a> before command 'rect x1,y1,x2,y2,color'
  3156.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
  3157.         @%rect%size 400,400%xrange -10,10%yrange -10,10%rect 0,0,4,-4,green%rect 0,5,4,1,red
  3158.         */
  3159.             for(i=0;i<5;i++){
  3160.                 switch(i){
  3161.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  3162.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  3163.                     case 2:double_data[2] = get_real(infile,0);break; /* x-values */
  3164.                     case 3:double_data[3] = get_real(infile,0);break; /* y-values */
  3165.                     case 4:stroke_color = get_color(infile,1);/* name or hex color */
  3166.                         decimals = find_number_of_digits(precision);
  3167.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,1,[%.*f,%.*f,%.*f,%.*f],[%.*f,%.*f,%.*f,%.*f],[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[2],decimals,double_data[2],decimals,double_data[0],decimals,double_data[1],decimals,double_data[1],decimals,double_data[3],decimals,double_data[3],line_width,line_width,line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  3168.                         if(onclick > 0){click_cnt++;}
  3169.                         /* click_cnt++; */
  3170.                         reset();
  3171.                         break;
  3172.                 }
  3173.             }
  3174.             break;
  3175.  
  3176.         case RECTS:
  3177.         /*
  3178.         @ rects color,x1,y1,x2,y2,.....
  3179.         @ use command 'frect color,x1,y1,x2,y2,.....' for a filled rectangle
  3180.         @ use command/keyword  <a href='#filled'>'filled'</a> before command 'rects color,x1,y1,x2,y2,....'
  3181.         @ use command 'fillcolor color' before 'frects' to set the fill colour.
  3182.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> individually
  3183.         @%rects%size 400,400%xrange -10,10%yrange -10,10%rects red,0,0,4,-4,0,5,4,1
  3184.         */
  3185.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  3186.             fill_color = stroke_color;
  3187.             i=0;
  3188.             while( ! done ){     /* get next item until EOL*/
  3189.                 if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
  3190.                 if(i%2 == 0 ){
  3191.                     double_data[i] = get_real(infile,0); /* x */
  3192.                 }
  3193.                 else
  3194.                 {
  3195.                     double_data[i] = get_real(infile,1); /* y */
  3196.                 }
  3197.                 i++;
  3198.             }
  3199.             decimals = find_number_of_digits(precision);
  3200.             for(c = 0 ; c < i-1 ; c = c+4){
  3201.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,1,[%.*f,%.*f,%.*f,%.*f],[%.*f,%.*f,%.*f,%.*f],[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[c],decimals,double_data[c+2],decimals,double_data[c+2],decimals,double_data[c],decimals,double_data[c+1],decimals,double_data[c+1],decimals,double_data[c+3],decimals,double_data[c+3],line_width,line_width,line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  3202.                 if(onclick > 0){click_cnt++;}
  3203.                 /* click_cnt++; */
  3204.             }
  3205.             reset();
  3206.             break;
  3207.  
  3208.         case REPLYFORMAT:
  3209.         /*
  3210.         @ replyformat number
  3211.         @ use number=-1 to deactivate the js-functions read_canvas() and read_dragdrop()
  3212.         @ default values should be fine !
  3213.         @ use command 'precision [0,1,10,100,1000,10000...]' before command 'replyformat' to set the desired number of decimals in the student reply / drawing
  3214.         @ the last value for 'precision int' will be used to calculate  the reply coordinates, if needed (read_canvas();)
  3215.         @ choose<ul><li>1 = x1,x2,x3,x4....x_n<br />y1,y2,y3,y4....y_n<br /><br />x/y in pixels</li><li>2 = x1,x2,x3,x4....x_n<br />  y1,y2,y3,y4....y_n<br /> x/y in xrange / yrange coordinate system<br /></li><li>3 = x1,x2,x3,x4....x_n<br />  y1,y2,y3,y4....y_n<br />  r1,r2,r3,r4....r_n<br />  x/y in pixels <br />  r in pixels</li><li>4 = x1,x2,x3,x4....x_n<br />  y1,y2,y3,y4....y_n<br />  r1,r2,r3,r4....r_n<br />  x/y in xrange / yrange coordinate system<br />  r in pixels</li><li>5 = Ax1,Ax2,Ax3,Ax4....Ax_n<br />  Ay1,Ay2,Ay3,Ay4....Ay_n<br />  Bx1,Bx2,Bx3,Bx4....Bx_n<br />  By1,By2,By3,By4....By_n<br />  Cx1,Cx2,Cx3,Cx4....Cx_n<br />  Cy1,Cy2,Cy3,Cy4....Cy_n<br />  ....<br />  Zx1,Zx2,Zx3,Zx4....Zx_n<br />  Zy1,Zy2,Zy3,Zy4....Zy_n<br />  x/y in pixels<br /></li><li>6 = Ax1,Ax2,Ax3,Ax4....Ax_n<br />  Ay1,Ay2,Ay3,Ay4....Ay_n<br />  Bx1,Bx2,Bx3,Bx4....Bx_n<br />  By1,By2,By3,By4....By_n<br />  Cx1,Cx2,Cx3,Cx4....Cx_n<br />  Cy1,Cy2,Cy3,Cy4....Cy_n<br />  ....<br />  Zx1,Zx2,Zx3,Zx4....Zx_n<br />  Zy1,Zy2,Zy3,Zy4....Zy_n<br />  x/y in xrange / yrange coordinate system<br /></li><li>7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n<br />  x/y in pixels</li><li>8 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n<br />  x/y in xrange / yrange coordinate system</li><li>9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n<br />  x/y in pixels</li><li>10 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n<br />  x/y in xrange / yrange coordinate system</li><li>11 = Ax1,Ay1,Ax2,Ay2<br />   Bx1,By1,Bx2,By2<br />   Cx1,Cy1,Cx2,Cy2<br />   Dx1,Dy1,Dx2,Dy2<br />   ......<br />   Zx1,Zy1,Zx2,Zy2<br />  x/y in xrange / yrange coordinate system</li><li>12 = Ax1,Ay1,Ax2,Ay2<br />   Bx1,By1,Bx2,By2<br />Cx1,Cy1,Cx2,Cy2<br />   Dx1,Dy1,Dx2,Dy2<br />   ......<br />   Zx1,Zy1,Zx2,Zy2<br />  x/y in pixels</li><li>13 = Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2,Cx1:Cy1:Cx2:Cy2,Dx1:Dy1:Dx2:Dy2, ... ,Zx1:Zy1:Zx2:Zy2<br />  x/y in xrange / yrange coordinate system</li><li>14 = Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2....Zx1:Zy1:Zx2:Zy2<br />  x/y in pixels</li><li>15 = reply from inputfields,textareas<br />  reply1,reply2,reply3,...,reply_n</li><li>16 = mathml input fields </li><li>17 = read "userdraw text,color" only (x1,y1,text1 \\n x2,y2,text2...\\n...x_n,y_n,text_n <br /> x/y-values are in xrang/yrange</li><li>18 = read_canvas() will read all interactive clocks in H1:M1:S1,H2:M2:S2...Hn:Mn:Sn</li><li>19 = read_canvas() will return the object number of marked / clicked object (clock)<br />analogue to (shape library) onclick command </li><li>20 = read_canvas() will reply "object_number:x:y" of external images : object_number of the first draggable external image in the fly-script starts with 0 <br />e.g. expect something like 0:-5:4,1:6:2,2:-2:-5 <br /> the first image position is (-5:4) , the second image position is (6:2) and the third image position is (-2:-5)        <li>21 = (x1:y1) (x2:y2) ... (x_n:y_n)<br />verbatim coordinate return</li><li>22 = returns an array .... reply[0]=x1 reply[1]=y1 reply[2]=x2 reply[3]=y2 ... reply[n-1]=x_n reply[n]=y_n<br />  x/y in xrange / yrange coordinate system</li><li>23 : can only be used for drawtype 'polyline'<br />a typical click sequence in drawtype polyline is x1,y1,x2,y2,x2,y2,x3,y3,x3,y3.....,x(n-1),y(n-1),x(n-1),y(n-1),xn,yn --replyformat 23--> x1,y1,x2,y2,x3,y3,.....x(n-1),y(n-1),xn,yn multiple occurences will be filtered out.The reply will be in x-y-range (xreply \\n yreply)</li><li>24 = read all inputfield values: even those set 'readonly'</li><li>25 = angle1,angle2...angle_n : will return the radius (one or many) of the user drawn circle segment in degrees </li><li>26 = rad1,rad2...rad_n : will return the radius (one or many) of the user drawn circle segment in radians </li><li>27 = return (only) userdraw inputfields  x1,y1,text1 \\n x2,y2,text2...\\n...x_n,y_n,text_n</li><li>28 = x1,y1,r1,x2,y2,r2...x_n,y_n,r_n <br />x / y / r in  xrange / yrange coordinate system: may be used to reinput into command 'circles color,x1,y1,r1,x2,y2,r2...x_n,y_n,r_n'<br /> will not return anything else (e.g. no inputfields , text etc)</li></ul>
  3216.  
  3217.         */
  3218.          reply_format = (int) get_real(infile,1);
  3219.          reply_precision = precision;
  3220.         break;
  3221.  
  3222.         case ROUNDRECT:
  3223.         /*
  3224.         @ roundrect x1,y1,x2,y2,radius in px,color
  3225.         @ use command 'froundrect x1,y1,x2,y2,radius,color' for a filled rectangle
  3226.         @ use command/keyword  <a href='#filled'>'filled'</a> before command 'roundrect x1,y1,x2,y2,radius,color'
  3227.         @ fillcolor will be identical to 'color'
  3228.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
  3229.         @%roundrect%size 400,400%xrange -10,10%yrange -10,10%roundrect 0,0,4,-4,20,green%roundrect 0,5,4,1,10,red
  3230.         */
  3231.             for(i=0;i<6;i++){
  3232.                 switch(i){
  3233.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  3234.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  3235.                     case 2:double_data[2] = get_real(infile,0);break; /* x-values */
  3236.                     case 3:double_data[3] = get_real(infile,0);break; /* y-values */
  3237.                     case 4:int_data[0] = (int) (get_real(infile,0));break; /* radius value in pixels */
  3238.                     case 5:stroke_color = get_color(infile,1);/* name or hex color */
  3239.                         /* ensure no inverted roundrect is produced... */
  3240.                         if( double_data[0] > double_data[2] ){double_data[4] = double_data[0];double_data[0] = double_data[2];double_data[2] = double_data[4];}
  3241.                         if( double_data[3] > double_data[1] ){double_data[4] = double_data[1];double_data[1] = double_data[3];double_data[3] = double_data[4];}
  3242.                         decimals = find_number_of_digits(precision);
  3243.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,6,[%.*f,%.*f],[%.*f,%.*f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[2],decimals,double_data[1],decimals,double_data[3],int_data[0],int_data[0],int_data[0],int_data[0],line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  3244.                         if(onclick > 0){click_cnt++;}
  3245.                         /* click_cnt++;*/
  3246.                         reset();
  3247.                     break;
  3248.                 }
  3249.             }
  3250.             break;
  3251.  
  3252.         case ROUNDRECTS:
  3253.         /*
  3254.         @ roundrects color,radius in px,x1,y1,x2,y2,x3,y3,x4,y4,....
  3255.         @ for filled roundrects use command/keyword <a href='#filled'>'filled'</a> before command
  3256.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> individually
  3257.         @%roundrects%size 400,400%xrange -10,10%yrange -10,10%roundrects blue,0,0,4,-4,20,0,5,4,1,10
  3258.         */
  3259.  
  3260.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  3261.             int_data[0] = (int) (get_real(infile,0)); /* radius value in pixels */
  3262.             fill_color = stroke_color;
  3263.             i=0;
  3264.             while( ! done ){     /* get next item until EOL*/
  3265.                 if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
  3266.                 if(i%2 == 0 ){
  3267.                     double_data[i] = get_real(infile,0); /* x */
  3268.                 }
  3269.                 else
  3270.                 {
  3271.                     double_data[i] = get_real(infile,1); /* y */
  3272.                 }
  3273.                 i++;
  3274.             }
  3275.             decimals = find_number_of_digits(precision);
  3276.             for(c = 0 ; c < i-1 ; c = c+4){
  3277.                 /* ensure no inverted roundrect is produced... */
  3278.                 if( double_data[c] > double_data[c+2] ){double_data[c+4] = double_data[c];double_data[c] = double_data[c+2];double_data[c+2] = double_data[c+4];}
  3279.                 if( double_data[c+3] > double_data[c+1] ){double_data[c+4] = double_data[c+1];double_data[c+1] = double_data[c+3];double_data[c+3] = double_data[c+4];}
  3280.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,6,[%.*f,%.*f],[%.*f,%.*f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[c],decimals,double_data[c+2],decimals,double_data[c+1],decimals,double_data[c+3],int_data[0],int_data[0],int_data[0],int_data[0],line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  3281.                 if(onclick > 0){click_cnt++;}
  3282.                 /* click_cnt++; */
  3283.             }
  3284.             reset();
  3285.             break;
  3286.  
  3287.         case RULER:
  3288.         /*
  3289.         @ ruler x,y,x-width ,y-height,mode
  3290.         @ x,y are the initial location
  3291.         @ x-width , y-height are the ruler dimensions width &amp; height in xy-coordinate system
  3292.         @ the ruler scale is by definition the x-scale, set by command 'xrange'<br />for example: a ruler x-width of 6 will have a scale ranging from 0 to 6
  3293.         @ mode : use -1 to set the ruler interactive (eg mouse movement of ruler; drag &amp; rotate)<br />use mode = '0&deg; - 360&deg;' to set the ruler with a static angle of some value
  3294.         @ if combined with a protractor, use replyformat = 32
  3295.         @ only one ruler allowed (for the time being)
  3296.         @ when using command 'zoom' , pay <b>attention</b> to the size and symmetry of your canvas<br />...to avoid a partial image, locate the start position near the center of the visual canvas<br /><em>technical:<br /> the actual 'ruler' is just a static generated image in a new canvas-memory<br />This image is only generated once, and a copy of its bitmap is translated & rotated onto the visible canvas.<br />That is the reason for the 'high-speed dragging and rotating'.<br />I've limited its size to xsize &times; ysize e.g. the same size as the visual canvas... </em>
  3297.         @ usage: first left click on the ruler will activate dragging;<br />a second left click will activate rotating (just move mouse around)<br />a third click will freeze this position and the x/y-coordinate and angle in radians will be stored in reply(3)<br />a next click will restart this sequence...
  3298.         @%ruler_interactive%size 800,400%xrange -10,10%yrange -10,10%strokecolor blue%opacity 200,50%filled%fillcolor lightgrey%ruler -9,0,10,2,-1%display degree,blue,22%zoom red
  3299.         @%ruler_set_degree_45%size 800,400%xrange -10,10%yrange -10,10%strokecolor blue%opacity 200,50%filled%fillcolor lightgrey%ruler 0,0,10,2,45%zoom red
  3300.         @%ruler_set_degree_125%size 800,400%xrange -10,10%yrange -10,10%strokecolor blue%opacity 200,50%filled%fillcolor lightgrey%ruler 0,0,10,2,125%zoom red
  3301.         */
  3302.             for( i = 0;i < 5; i++ ){
  3303.                 switch(i){
  3304.                     case 0: double_data[0] = get_real(infile,0);break; /* x-center */
  3305.                     case 1: double_data[1] = get_real(infile,0);break; /* y-center */
  3306.                     case 2: double_data[2] = get_real(infile,0);break; /* x-width */
  3307.                     case 3: double_data[3] = get_real(infile,0);break; /* y-width */
  3308.                     case 4: int_data[0] = (int)(get_real(infile,1)); /* passive mode */
  3309.                     decimals = find_number_of_digits(precision);
  3310.                     if( int_data[0] < 0 ){
  3311.                       if( js_function[JS_FIND_ANGLE] != 1 ){  js_function[JS_FIND_ANGLE] = 1; }
  3312.                     }
  3313.                     add_js_ruler(js_include_file,canvas_root_id,double_data[0],double_data[1],double_data[2],double_data[3],font_family,stroke_color,stroke_opacity,fill_color,fill_opacity,line_width,int_data[0]);
  3314.                     string_length = snprintf(NULL,0,";ruler%d(); ",canvas_root_id);
  3315.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3316.                     snprintf(tmp_buffer,string_length,";ruler%d(); ",canvas_root_id);
  3317.                     add_to_buffer(tmp_buffer);
  3318.                     reply_precision = precision;
  3319.                     /* no reply from ruler if non-interactive */
  3320.                     if( reply_format == 0 && int_data[0] == -1 ){reply_format = 31;}
  3321.                     break;
  3322.                     default: break;
  3323.                 }
  3324.             }
  3325.             break;
  3326.  
  3327.         case RESETOFFSET:
  3328.         /*
  3329.          @ resetoffset
  3330.          @ keyword ; use to restore text placement on the canvas to the real (x;y) coordinates of the left bottom corner of the text
  3331.          @ may be active for commands <a href="#text">text</a> and <a href="#string">string</a> (e.g. objects in the drag/drop/onclick-librariy
  3332.         */
  3333.          use_offset = 0;
  3334.          break;
  3335.  
  3336.         case ROTATE:
  3337.         /*
  3338.          @ rotate rotation_angle
  3339.          @ angle in degrees
  3340.          @ (only) the next object will be rotated is given angle
  3341.          @ positive values rotate counter clockwise
  3342.          @ attention: all objects will be rotated around their first point...<br /><em>rotate 45</em><br /> <em>triangle 1,1,5,1,3,4,red</em><br />will rotate 45 degrees around point (1:1)
  3343.          @ if another rotation center is needed, use command <a href="#rotationcenter">'rotationcenter xc,yc'</a>.<br />to reset this rotationcenter, use keyword <a href="killrotate">'killrotate'</a>
  3344.          @ attention: rotate will mess up the interactivity of the rotated object <br />e.g. if combined with command <a href="#drag">"drag xy"</a> or keyword <a href="onclick">"onclick"</a> : the mouse recognises the original -unrotated- coordinates of the object
  3345.          @%rotate-1%size 400,400%xrange -10,10%yrange -10,10%fpoly yellow,0,0,4,3,2,5%rotate 45%fpoly violet,0,0,4,3,2,5%killrotate%rotate 90%fpoly violet,0,0,4,3,2,5%
  3346.         */
  3347.             use_rotate = TRUE;
  3348.             angle = -1*(get_real(infile,1));/* -1 : to be compatible with Flydraw... */
  3349.             break;
  3350.         case ROTATION_CENTER:
  3351.         /*
  3352.         @ rotationcenter x_center,y_center
  3353.         @ define an rotation center in your x/y-coordinate system
  3354.         @ wims will not check the validity of your input; use javascript console to debug any erors
  3355.         @ if not defined a rotation will be around the first point of an object
  3356.         @ to be used before command <a href="#rotate">rotate</a>
  3357.         @ all other commands will use this rotation center, unless a <a href="#killrotation">killrotation</a> is given
  3358.         @%rotatationcenter%size 400,400%xrange -10,10%yrange -10,10%rotationcenter 3,3%fpoly yellow,0,0,4,3,2,5%rotate 45%fpoly violet,0,0,4,3,2,5%mouse red,22
  3359.         */
  3360.             temp = get_string(infile,1);
  3361.             string_length = snprintf(NULL,0,"[ %s ]",temp);
  3362.             check_string_length(string_length);
  3363.             rotation_center = my_newmem(string_length+1);
  3364.             snprintf(rotation_center,string_length,"[%s]",temp);
  3365.             break;
  3366.  
  3367.         case SIZE:
  3368.             /*
  3369.             @ size width,height
  3370.             @ set canvas size in pixels
  3371.             @ mandatory first command (can only be preceded by keyword <a href="#popup">'popup'</a>)
  3372.             @ if xrange and/or yrange is not given the range will be set to pixels :<br />xrange 0,xsize yrange 0,ysize<br />note: lower left  corner is Origin (0:0) !!! this in contrast to flydraw
  3373.             */
  3374.             found_size_command = 1;
  3375.             /* using fabs : however "xsize == int" : so "xsize = abs( (int) get_real(infile,0))" would be the idea... */
  3376.             xsize = (int)(fabs(round(get_real(infile,0)))); /* just to be sure that sizes > 0 */
  3377.             ysize = (int)(fabs(round(get_real(infile,1))));
  3378.             /* sometimes we want xrange / yrange to be in pixels...without telling x/y-range */
  3379.             xmin = 0;xmax = xsize;
  3380.             ymin = 0;ymax = ysize;
  3381.  
  3382. /*
  3383.  The sequence in which stuff is finally printed is important !!
  3384. */
  3385. fprintf(stdout,"\n\
  3386. <script type=\"text/javascript\">\n\
  3387. /*<![CDATA[*/\n\
  3388. if( typeof(wims_status) === 'undefined' ){ var wims_status = \"$status\";};\
  3389. if( typeof(use_dragdrop_reply) === 'undefined' ){ var use_dragdrop_reply = false;};\
  3390. if( typeof(canvas_scripts) === 'undefined' ){ var canvas_scripts = new Array();};\
  3391. canvas_scripts.push(\"%d\");\n/*]]>*/\n</script>\n\
  3392. ",canvas_root_id);
  3393.  
  3394. /* style=\"display:block;position:relative;margin-left:auto;margin-right:auto;margin-bottom:4px;\" */
  3395. if( use_tooltip != 2){
  3396.  fprintf(stdout,"<!-- canvasdraw div  -->\n\
  3397. <div tabindex=\"0\" id=\"canvas_div%d\" style=\"position:relative;width:%dpx;height:%dpx;margin-left:auto;margin-right:auto;\" oncontextmenu=\"return false;\"></div>\n\
  3398. <!-- tooltip and input placeholder  -->\n\
  3399. <div id=\"tooltip_placeholder_div%d\" style=\"text-align:center\"><span id=\"tooltip_placeholder%d\" style=\"display:none;\"></span></div>\
  3400. <!-- include actual object code via include file -->\n\
  3401. <script id=\"canvas_script%d\" type=\"text/javascript\" src=\"%s\"></script>\n",canvas_root_id,xsize,ysize,canvas_root_id,canvas_root_id,canvas_root_id,getfile_cmd);
  3402. }
  3403. else
  3404. {
  3405. /*
  3406. set canvas_div invisible and do not include placeholder in main html page :
  3407. the js-include will also be in a popup window...to be shown when wims $status = done
  3408. */
  3409.  fprintf(stdout,"<!-- canvasdraw div invisible  -->\n\
  3410. <div tabindex=\"0\" id=\"canvas_div%d\" style=\"display:none;position:relative;width:%dpx;height:%dpx;margin-left:auto;margin-right:auto;\" ></div>\n\
  3411. <div id=\"tooltip_placeholder_div%d\" style=\"display:none;position:relative;margin-left:auto;margin-right:auto;margin-bottom:4px;\"><span id=\"tooltip_placeholder%d\" style=\"display:none;\"></span></div>\
  3412. <!-- include actual object code via include file -->\n\
  3413. <script id=\"canvas_script%d\" type=\"text/javascript\" src=\"%s\"></script>\n",canvas_root_id,xsize,ysize,canvas_root_id,canvas_root_id,canvas_root_id,getfile_cmd);
  3414. }
  3415.  
  3416. /* these must be global...it's all really very poor javascript :( */
  3417. fprintf(js_include_file,"\n<!-- begin generated javascript include for canvasdraw -->\n\
  3418. \"use strict\";\n\
  3419. <!-- these variables and functions must be global -->\n\
  3420. var read_dragdrop%d;\
  3421. var read_canvas%d;\
  3422. var set_clock;\
  3423. var clear_draw_area%d;\
  3424. var update_draw_area%d;\
  3425. var draw_boxplot;\
  3426. var redraw_all%d;\
  3427. var userdraw_primitive;\n\
  3428. var wims_canvas_function%d = function(){\n<!-- common used stuff -->\n\
  3429. var userdraw_x = [];var userdraw_y = [];var userdraw_radius = [];\n\
  3430. var xsize = %d;\
  3431. var ysize = %d;\
  3432. var precision = 100;\
  3433. var canvas_div = document.getElementById(\"canvas_div%d\");\
  3434. var create_canvas%d = function(canvas_type,size_x,size_y){var cnv;if(document.getElementById(\"wims_canvas%d\"+canvas_type)){ cnv = document.getElementById(\"wims_canvas%d\"+canvas_type);}else{try{ cnv = document.createElement(\"canvas\"); }catch(e){alert(\"Your browser does not support HTML5 CANVAS:GET FIREFOX !\");return;};canvas_div.appendChild(cnv);};cnv.width = size_x;cnv.height = size_y;cnv.style.top = 0;cnv.style.left = 0;cnv.style.position = \"absolute\";cnv.id = \"wims_canvas%d\"+canvas_type;return cnv;};\
  3435. function findPosX(i){ var obj = i;var curleft = 0;if(obj.offsetParent){while(1){curleft += obj.offsetLeft;if(!obj.offsetParent){break;};obj = obj.offsetParent;};}else{if(obj.x){curleft += obj.x;};};return curleft;};function findPosY(i){var obj = i;var curtop = 0;if(obj.offsetParent){while(1){curtop += obj.offsetTop;if(!obj.offsetParent){break;};obj = obj.offsetParent;};}else{if(obj.y){curtop += obj.y;};};return curtop;};\
  3436. function x2px(x){if(use_xlogscale == 0 ){return parseFloat(x*xsize/(xmax - xmin) - xsize*xmin/(xmax - xmin));}else{var x_max = Math.log(xmax)/Math.log(xlogbase);var x_min = Math.log(xmin)/Math.log(xlogbase);var x_in = Math.log(x)/Math.log(xlogbase);return x_in*xsize/(x_max - x_min) - xsize*x_min/(x_max - x_min);};};\
  3437. function px2x(px){if(use_xlogscale == 0 ){return parseFloat(px*(xmax - xmin)/xsize + xmin);}else{var x_max = Math.log(xmax)/Math.log(xlogbase);var x_min = Math.log(xmin)/Math.log(xlogbase);var x_out = x_min +px*(x_max - x_min)/(xsize);return Math.pow(xlogbase,x_out);};};\
  3438. function px2y(py){if(use_ylogscale == 0 ){return parseFloat(ymax - py*(ymax - ymin)/ysize);}else{var y_max = Math.log(ymax)/Math.log(ylogbase);var y_min = Math.log(ymin)/Math.log(ylogbase);var y_out = y_max +py*(y_min - y_max)/(ysize);return Math.pow(ylogbase,y_out);};};\
  3439. function y2px(y){if(use_ylogscale == 0){return parseFloat(-1*y*ysize/(ymax - ymin) + ymax*ysize/(ymax - ymin));}else{var y_max = Math.log(ymax)/Math.log(ylogbase);var y_min = Math.log(ymin)/Math.log(ylogbase);var y_in = Math.log(y)/Math.log(ylogbase);return (y_max - y_in)*ysize/(y_max - y_min);};};\
  3440. function scale_x_radius(rx){return rx*xsize/(xmax - xmin);};\
  3441. function scale_y_radius(ry){return ry*ysize/(ymax - ymin);};\
  3442. function distance(x1,y1,x2,y2){return Math.sqrt( (x1-x2)*(x1-x2) + (y1-y2)*(y1-y2) );};\
  3443. function distance_to_line (r,q,x,y){var c = (y) - (-1/r)*(x);var xs = r*(c - q)/(r*r+1);var ys = (r)*(xs)+(q);return parseInt(Math.sqrt( (xs-x)*(xs-x) + (ys-y)*(ys-y) ));};\
  3444. function move(obj,dx,dy){for(var p = 0 ; p < obj.x.length; p++){obj.x[p] = obj.x[p] + dx;obj.y[p] = obj.y[p] + dy;};return obj;};\
  3445. function slide(obj,dx,dy){for(var p = 0 ; p < obj.x.length; p++){obj.x[p] = x2px(obj.xorg[p] + dx);obj.y[p] = y2px(obj.yorg[p] + dy);};return obj;};\
  3446. var isTouch = (('ontouchstart' in window) || (navigator.msMaxTouchPoints > 0));\
  3447. var x_use_snap_to_grid = 0;var y_use_snap_to_grid = 0;var snap_x = 1;var snap_y = 1;\
  3448. var use_snap_to_points = 0;\
  3449. function snap_to_x(x){return x2px(snap_x*(Math.round((px2x(x))/snap_x)));};\
  3450. function snap_to_y(y){return y2px(snap_y*(Math.round((px2y(y))/snap_y)));};\
  3451. var xlogbase = 10;\
  3452. var ylogbase = 10;\
  3453. var use_xlogscale = 0;\
  3454. var use_ylogscale = 0;\
  3455. var x_strings = {};var x_strings_up = [];\
  3456. var y_strings = null;\
  3457. var use_pan_and_zoom = 0;\
  3458. var use_jsmath = 0;\
  3459. var xstart = 0;\
  3460. var ystart = 0;\
  3461. var unit_x=\" \";\
  3462. var unit_y=\" \";\
  3463. var external_canvas = create_canvas%d(%d,xsize,ysize);\n",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,xsize,ysize,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,EXTERNAL_IMAGE_CANVAS);
  3464. /* default add the drag code : nearly always used ...*/
  3465.   add_drag_code(js_include_file,DRAG_CANVAS,canvas_root_id);
  3466.  
  3467.             break;
  3468.  
  3469.  
  3470.         case SEGMENT:
  3471.         /*
  3472.         @ segment x1,y1,x2,y2,color
  3473.         @ alternative : seg
  3474.         @ draw a line segment between points (x1:y1)--(x2:y2) in color 'color'
  3475.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
  3476.         @%segment_onclick%size 400,400%xrange -10,10%yrange -10,10%segment%linewidth 2%onclick%segment 1,1,-9,3,green
  3477.         @%segment_drag_y%size 400,400%xrange -10,10%yrange -10,10%segment%linewidth 2%drag y%segment 1,1,-9,3,green
  3478.         */
  3479.             for(i=0;i<5;i++) {
  3480.                 switch(i){
  3481.                     case 0: double_data[0]= get_real(infile,0);break; /* x1-values */
  3482.                     case 1: double_data[1]= get_real(infile,0);break; /* y1-values */
  3483.                     case 2: double_data[2]= get_real(infile,0);break; /* x2-values */
  3484.                     case 3: double_data[3]= get_real(infile,0);break; /* y2-values */
  3485.                     case 4: stroke_color=get_color(infile,1);/* name or hex color */
  3486.                         decimals = find_number_of_digits(precision);
  3487.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,4,[%.*f,%.*f],[%.*f,%.*f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[2],decimals,double_data[1],decimals,double_data[3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  3488.                         if(onclick > 0){click_cnt++;}
  3489.                         /* click_cnt++; */
  3490.                         reset();
  3491.                         break;
  3492.                     default: break;
  3493.                 }
  3494.             }
  3495.             break;
  3496.  
  3497.         case SEGMENTS:
  3498.         /*
  3499.         @ segments color,x1,y1,x2,y2,...,x_n,y_n
  3500.         @ alternative : segs
  3501.         @ draw multiple segments between points (x1:y1)--(x2:y2).....and... (x_n-1:y_n-1)--(x_n:y_n) in color 'color'
  3502.         @ use command 'linewidth int'  to adust size
  3503.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> individually (!)
  3504.         @%segments_onclick%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%onclick%segments green,1,1,3,3,0,0,-3,3,1,1,4,-1,-5,5,-3,-1
  3505.         @%segments_drag_y%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%drag y%segments green,1,1,3,3,0,0,-3,3,1,1,4,-1,-5,5,-3,-1
  3506.         */
  3507.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  3508.             fill_color = stroke_color;
  3509.             i=0;
  3510.             while( ! done ){     /* get next item until EOL*/
  3511.                 if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
  3512.                 if(i%2 == 0 ){
  3513.                     double_data[i] = get_real(infile,0); /* x */
  3514.                 }
  3515.                 else
  3516.                 {
  3517.                     double_data[i] = get_real(infile,1); /* y */
  3518.                 }
  3519.                 i++;
  3520.             }
  3521.             decimals = find_number_of_digits(precision);
  3522.             for(c = 0 ; c < i-1 ; c = c+4){
  3523.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,4,[%.*f,%.*f],[%.*f,%.*f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[c],decimals,double_data[c+2],decimals,double_data[c+1],decimals,double_data[c+3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  3524.                 if(onclick > 0){click_cnt++;}
  3525.                 /* click_cnt++;*/
  3526.             }
  3527.             reset();
  3528.             break;
  3529.  
  3530.         case SETLIMITS:
  3531.         /*
  3532.             @ setlimits
  3533.             @ keyword : if set, it will produce 4 inputfields for 'xmin,xmax,ymin,ymax' and an 'ok' button
  3534.             @ may be used for inputfield based zooming / panning
  3535.             @ may be styled using command <a href="#inputstyle">inputstyle</a>
  3536.             @ use commands <a href="#xlabel">xlabel / ylabel</a> to change text from xmin to 'xlabel' etc
  3537.             @ note:the input value will not be checked on validity
  3538.             @%setlimits%size 400,400%xrange -10,10%yrange -10,10%precision 1%xlabel T%ylabel H%axis%axisnumbering%grid 2,2,grey,2,2,5,grey%precision 100%multistrokecolors red,green,blue,orange%multilinewidth 1,1,2,2%multistrokeopacity 0.6,0.7,0.8,0.9%jsplot red,1/x,-1,x,1/(x-3),1/(x+3)%setlimits
  3539.         */
  3540.             if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  3541.             add_setlimits(js_include_file,canvas_root_id,font_size,input_style);
  3542.             /* add_setlimits provides 'fprintf(js_include_file,"use_pan_and_zoom = 1;");' */
  3543.             use_pan_and_zoom = TRUE;
  3544.             done = TRUE;
  3545.             break;
  3546.  
  3547.         case SETPIXEL:
  3548.         /*
  3549.         @ setpixel x,y,color
  3550.         @ A rectangular "point" with diameter 1 pixel centered at (x:y) in xrange / yrange
  3551.         @ pixels can <b>not</b> be dragged or clicked
  3552.         @ "pixelsize = 1" may be changed by command "pixelsize int"
  3553.         @%setpixel%size 400,400%xrange -10,10%yrange -10,10%setpixel 1,1,red%pixelsize 2%setpixel 2,2,green%pixelsize 3%setpixel 3,3,blue%
  3554.         */
  3555.             if( js_function[DRAW_PIXELS] != 1 ){ js_function[DRAW_PIXELS] = 1;}
  3556.             for(i=0;i<3;i++){
  3557.                 switch(i){
  3558.                     case 0: double_data[0] = get_real(infile,0); break; /* x */
  3559.                     case 1: double_data[1] = get_real(infile,0); break; /* y  */
  3560.                     case 2: stroke_color = get_color(infile,1);
  3561.                            string_length = snprintf(NULL,0,"draw_setpixel([%f],[%f],\"%s\",%.2f,%d);\n",double_data[0],double_data[1],stroke_color,stroke_opacity,pixelsize);
  3562.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3563.                            snprintf(tmp_buffer,string_length,"draw_setpixel([%f],[%f],\"%s\",%.2f,%d);\n",double_data[0],double_data[1],stroke_color,stroke_opacity,pixelsize);
  3564.                            add_to_buffer(tmp_buffer);
  3565.                            break;
  3566.                     default:break;
  3567.                 }
  3568.             }
  3569.             reset();
  3570.         break;
  3571.  
  3572.  
  3573.         case SLIDER:
  3574.         /*
  3575.         @ slider start_value,end_value,width px,height px,<em>type</em>,label
  3576.         @ <em>type</em> may be : xy,x,y,angle
  3577.         @ if a slider value display is desired, use for argument <em>type</em>:<br />xy display<br />x display<br />y display<br />angle radian<br />angle degree
  3578.         @ if a unit (or something like that...) for x/y-value display is needed, use commands 'xunit' and / or 'yunit'
  3579.         @ if the translation should be performed using a function, use for type: xy function,x function,y function<br />use commands sliderfunction_x and/or sliderfunction_y before the slider command to define the functions<br />example:<br />sliderfunction_x x^2<br />sliderfunction_y y^2<br />slider -5,5,100,100,xy function,Some_Text<br />...some stuff to slide<br />killslider<br />sliderfunction_x x^2-2<br />slider -15,15,100,10,x function,Some_Other_Text<br />...more stuff to slide<br />killslider<br />... etc
  3580.         @ use command 'slider' before draggable/clickable objects.
  3581.         @ drag and drop may be combined with rotation slider<br />for example an arrow rotated by a slider may be placed anywhere (drag&drop)<em>size 300,300<br />xrange -5,5<br />yrange -5,5<br />grid 1,1,grey<br />linewidth 3<br />drag xy<br />fillcolor orange<br />strokecolor blue<br />slider 0,2*pi,250,30,angle degrees,Rotate arrow<br />arrow 2,2,5,5,8,red</em>
  3582.         @ no slider for a math function, these can be traced using command 'trace_jscurve some_function_in_x'
  3583.         @ a slider will affect all draggable objects after the 'slider' command...<br />and can be used to group translate / rotate several objects...<br />until a next 'slider' or keyword 'killslider'
  3584.         @ amount of sliders is not limited.
  3585.         @ javascript:read_dragdrop(); will return an array with 'object_number:slider_value'
  3586.         @ type=xy: will produce a 2D 'slider' [rectangle width x heigh px] in your web page
  3587.         @ every draggable object may have its own slider (no limit in amount of sliders)
  3588.         @ label: some slider text
  3589.         @ use fillcolor for slider ball
  3590.         @ use strokecolor for slider bar
  3591.         @ use fontfamily / fontcolor to set used fonts
  3592.         @ use opacity (only fill opacity will be used) to set transparency
  3593.         @ the slider canvas will be added to the 'tooltip div' : so incompatible with command tooltip ; setlimits etc
  3594.         */
  3595.             slider_cnt++;/* slider starts at 1 */
  3596.             for(i=0; i<6 ; i++){
  3597.                 switch(i){
  3598.                     case 0: double_data[0] = get_real(infile,0);break; /* start value */
  3599.                     case 1: double_data[1] = get_real(infile,0);break; /* end value */
  3600.                     case 2: int_data[0] = (int)(get_real(infile,0));break; /* width */
  3601.                     case 3: int_data[1] = (int)(get_real(infile,0));break; /* height */
  3602.                     case 4: temp = get_string_argument(infile,0); /* type : xy,x,y,angle */
  3603.                             if(strstr(temp,"xy")!= 0){
  3604.                                 slider = 4;
  3605.                             }
  3606.                             else
  3607.                             {
  3608.                                 if(strstr(temp,"x") != 0){
  3609.                                     slider = 1;
  3610.                                 }
  3611.                                 else
  3612.                                 {
  3613.                                     if(strstr(temp,"y") != 0){
  3614.                                         slider = 2;
  3615.                                     }
  3616.                                     else
  3617.                                     {
  3618.                                         if(strstr(temp,"angle") != 0){ /* angle diplay radian */
  3619.                                             slider = 3;
  3620.                                         }
  3621.                                         else
  3622.                                         {
  3623.                                             canvas_error("slider can be of type: xy,x,y,angle,fun_x:fun_y");
  3624.                                         }
  3625.                                     }
  3626.                                 }
  3627.                             }
  3628.                             if(strstr(temp,"display")!=0){
  3629.                                 if( slider == 4 ){ /* show x:y */
  3630.                                     use_slider_display = 1; /* show x xy values in canvas window */
  3631.                                 }
  3632.                                 else
  3633.                                 {
  3634.                                     if( slider == 1 ){ /* show only x -values */
  3635.                                      use_slider_display = 10;
  3636.                                     }
  3637.                                     else
  3638.                                     {
  3639.                                      use_slider_display = 11; /* show only y -values*/
  3640.                                     }
  3641.                                 }
  3642.                             }
  3643.                             else
  3644.                             {
  3645.                                 if(strstr(temp,"degree")!= 0){
  3646.                                     use_slider_display = 2; /* show angle values in canvas window */
  3647.                                 }
  3648.                                 else
  3649.                                 {
  3650.                                     if(strstr(temp,"radian")!=0){
  3651.                                         use_slider_display = 3; /* show radian values in canvas window */
  3652.                                     }
  3653.                                 }
  3654.                             }
  3655.                             if(use_slider_display != 0 && slider_cnt == 1){ /*add just once the display js-code */
  3656.                                 add_slider_display(js_include_file,canvas_root_id,precision,font_size,font_color,stroke_opacity);
  3657.                             }
  3658.                             if(strstr(temp,"fun")!= 0){
  3659.                                 if( use_js_math == FALSE){/* add this stuff only once...*/
  3660.                                     add_to_js_math(js_include_file); use_js_math = TRUE;
  3661.                                 }
  3662.                                 fprintf(js_include_file,"var slider_function%d = {x:to_js_math('%s'),y:to_js_math('%s')};",slider_cnt,slider_function_x,slider_function_y);
  3663.                                 slider_function_x = "x";slider_function_y = "y";/* reset the functions for next slider...*/
  3664.                             }
  3665.                             else
  3666.                             {
  3667.                                 fprintf(js_include_file,"var slider_function%d = {x:'x',y:'y'};",slider_cnt);
  3668.                                 /* we must define these, otherwise 'use stict' will cause an error */
  3669.                             }
  3670.                     break;
  3671.                     case 5: /* some string used for slider description  */
  3672.                             if(slider == 4){
  3673.                                 add_xyslider(js_include_file,canvas_root_id,double_data[0],double_data[1],int_data[0],int_data[1],slider,get_string_argument(infile,1),slider_cnt,stroke_color,fill_color,line_width,fill_opacity,font_family,font_color,use_slider_display);
  3674.                             }
  3675.                             else
  3676.                             {
  3677.                                 add_slider(js_include_file,canvas_root_id,double_data[0],double_data[1],int_data[0],int_data[1],slider,get_string_argument(infile,1),slider_cnt,stroke_color,fill_color,line_width,fill_opacity,font_family,font_color,use_slider_display);
  3678.                             }
  3679.                     break;
  3680.                 }
  3681.              }
  3682.             break;
  3683.         case SLIDER_X:
  3684.         /*
  3685.          @ sliderfunction_x some_function_in_x
  3686.          @ default value "x"
  3687.          @ the x-value of the slider object(s) will be calculated with this function.
  3688.          @ default is the x-slider value itself
  3689.          @ only used by command 'slider'
  3690.          @ define before a slider command !
  3691.         */
  3692.          slider_function_x = get_string(infile,1);
  3693.         break;
  3694.         case SLIDER_Y:
  3695.          slider_function_y = get_string(infile,1);
  3696.          /*
  3697.          @ sliderfunction_y some_function_in_y
  3698.          @ default value "y"
  3699.          @ the y-value of the slider object(s) will be calculated with this function.
  3700.          @ only used by command 'slider'
  3701.          @ define before a slider command !
  3702.          */
  3703.         break;
  3704.         case SGRAPH:
  3705.         /*
  3706.          @ sgraph xstart,ystart,xmajor,ymajor,xminor,yminor,majorgrid_color,minorgrid_color
  3707.          @ primitive implementation of a 'broken scale' graph...
  3708.          @ not very versatile: only usable in combination with userdraw <br />eg no other objects will obey this "coordinate system"<br />if you want to place an object into this coordinate system, be aware that 10% or 20% of xsize and/or ysize is 'lost'.<br />Use these "formulas" to recalculate the virtual coordinates:<br />factor=0.8 in case xstart != xmin (or ystart != ymin)<br />factor=0.9 in case xstart = xmin (or ystart = ymin)<br />px_x_point = ((factor*xsize)/(xmax - xstart))*(x_point - xmax)+xsize<br />x_recalculated = px*(xmax - xmin)/xsize + $xmin<br />px_y_point = -1*factor*y_point*ysize/(ymax - ystart) + ymax*factor*ysize/(ymax - ystart)<br />y_recalculated = ymax - py*(ymax - ymin)/ysize<br />
  3709.          @%sgraph%size 400,400%xrange 0,10000%yrange 0,100%sgraph 9000,50,100,10,4,4,grey,blue%userinput_xy%linewidth 2%userdraw segments,red%precision 0%mouse blue,22
  3710.         */
  3711.             if( js_function[DRAW_SGRAPH] != 1 ){ js_function[DRAW_SGRAPH] = 1;}
  3712.             for(i = 0 ; i < 8 ;i++){
  3713.                 switch(i){
  3714.                     case 0:double_data[0] = get_real(infile,0);break;
  3715.                     case 1:double_data[1] = get_real(infile,0);break;
  3716.                     case 2:double_data[2] = get_real(infile,0);break;
  3717.                     case 3:double_data[3] = get_real(infile,0);break;
  3718.                     case 4:int_data[0] = (int)(get_real(infile,0));break;
  3719.                     case 5:int_data[1] = (int)(get_real(infile,0));break;
  3720.                     case 6:stroke_color = get_color(infile,0);break;
  3721.                     case 7:font_color = get_color(infile,1);
  3722.                     string_length = snprintf(NULL,0,"xstart = %f;\nystart = %f;\ndraw_sgraph(%d,%d,%f,%f,%d,%d,\"%s\",\"%s\",\"%s\",%f,%d);\n",double_data[0],double_data[1],GRID_CANVAS,precision,double_data[2],double_data[3],int_data[0],int_data[1],stroke_color,font_color,font_family,stroke_opacity,font_size);
  3723.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3724.                     snprintf(tmp_buffer,string_length,"xstart = %f;\nystart = %f;\ndraw_sgraph(%d,%d,%f,%f,%d,%d,\"%s\",\"%s\",\"%s\",%f,%d);\n",double_data[0],double_data[1],GRID_CANVAS,precision,double_data[2],double_data[3],int_data[0],int_data[1],stroke_color,font_color,font_family,stroke_opacity,font_size);
  3725.                     add_to_buffer(tmp_buffer);
  3726.                     break;
  3727.                     default:break;
  3728.                 }
  3729.             }
  3730.             /* sgraph(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily,opacity)*/
  3731.             break;
  3732.  
  3733.         case SNAPTOFUNCTION:
  3734.         /*
  3735.         @ snaptofunction some_function_in_x,some_funtion_in_y
  3736.         @ alternative : snaptofun some_function_in_x,some_funtion_in_y
  3737.         @ the next object will snap to the calculated values
  3738.         @ if you want only modification of y-values,just use: snaptofunction x,5*sin(1/y)
  3739.         @ if you want only modification of x-values,just use: snaptofunction 5*sin(1/x),y
  3740.         @ for now only one instance of 'snaptofunction' is allowed
  3741.         @ use rawmath on your functions: no validity checking is done by wims !
  3742.         @ note: switching x and y coordinates?<br />snaptofunction y,x
  3743.         */
  3744.         temp = get_string_argument(infile,0);
  3745.         fprintf(js_include_file,"\nuse_snap_to_points = 2;");
  3746.         if( use_js_math == FALSE){/* add this stuff only once...*/
  3747.             add_to_js_math(js_include_file); use_js_math = TRUE;
  3748.         }
  3749.         fprintf(js_include_file,"var snap_fun = {x:to_js_math('%s'),y:to_js_math('%s')};function snap_to_fun(px,py){ var x = px2x(px); var y = px2y(py); return [ x2px(eval(snap_fun.x)) , y2px(eval(snap_fun.y)) ];};",temp,get_string(infile,1));
  3750.         break;
  3751.         case SNAPTOPOINTS:
  3752.         /*
  3753.         @ snaptopoints x1,y1,x2,y2,x3,y3....
  3754.         @ a userdraw object will snap to these points.
  3755.         @ the array size (e.g. the number of points) of command 'snaptopoints' is limited by constant MAX_INT (canvasdraw.h)
  3756.         @ a draggable object (use command "drag  x|y|xy") will snap to the clossed of these points when dragged (mouseup)
  3757.         @ other options: use keyword "snaptogrid", "xsnaptogrid" or "ysnaptogrid"
  3758.         @%snaptopoints%size 400,400%xrange -5,5%yrange -5,5%colorpalette red,green,blue,orange%snaptopoints -1,-3,-1,-2,-1,0,-1,1,-1,2,-1,3,1,-3,1,-2,1,-1,1,0,1,1,1,2,1,3%linewidth 2%points red,-1,-3,-1,-2,-1,0,-1,1,-1,2,-1,3,1,-3,1,-2,1,-1,1,0,1,1,1,2,1,3%userdraw arrows,red
  3759.         */
  3760.             i = 0;
  3761.             while( ! done ){     /* get next item until EOL*/
  3762.                 if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
  3763.                 if(i%2 == 0 ){
  3764.                     double_data[i] = get_real(infile,0); /* x */
  3765.                 }
  3766.                 else
  3767.                 {
  3768.                     double_data[i] = get_real(infile,1); /* y */
  3769.                 }
  3770.                 i++;
  3771.             }
  3772.             decimals = find_number_of_digits(precision);
  3773.             fprintf(js_include_file,"\nuse_snap_to_points = 1;\nfunction find_min_diff(x,y,X,Y){var diff = 100000000;var chk;var idx = 0;for(var p = 0 ; p < %d ; p++){chk = distance(x,y,X[p],Y[p]);if( chk  < diff ){ diff = chk; idx = p;};};return idx;};\nfunction snap_to_points(x,y){x = px2x(x); y = px2y(y);var points = [%s];var xpoints = points[0];var ypoints = points[1];var idx = find_min_diff(x,y,xpoints,ypoints);x = xpoints[idx];y = ypoints[idx];return [x2px(x),y2px(y)];};\n",(int) (0.5*i),double_xy2js_array(double_data,i,decimals));
  3774.         break;
  3775.  
  3776.         case SNAPTOGRID:
  3777.         /*
  3778.          @ snaptogrid
  3779.          @ keyword (no arguments required)
  3780.          @ a draggable object (use command "drag  x|y|xy") will snap to the given grid when dragged (mouseup)
  3781.          @ in case of userdraw the drawn points will snap to xmajor / ymajor grid
  3782.          @ if no grid is defined ,points will snap to every integer xrange/yrange value. (eg snap_x=1,snap_y=1)
  3783.          @ if you do not want a visible grid, but you only want a 'snaptogrid' with some value...define this grid with opacity 0.
  3784.          @ if xminor / yminor is defined,(use keyword 'axis' to activate the minor steps) the drawing will snap to xminor and yminor<br />use only even dividers in x/y-minor...for example<br />snaptogrid<br />axis<br />grid 2,1,grey,4,4,7,red<br /> will snap on x=0, x=0.5, x=1, x=1.5 ....<br /> will snap on y=0, y=0.25 y=0.5 y=0.75 ...<br />
  3785.          @%snaptogrid_1%size 400,400%xrange -5,5%yrange -5,5%axis%axisnumbering%precision 1%grid 1,1,grey,2,2,6,grey%linewidth 2%snaptogrid%userdraw crosshairs,blue%mouse red,22
  3786.          @%snaptogrid_2%size 400,400%xrange -5,5%yrange -5,5%axis%axisnumbering%precision 1%grid 1,1,grey,4,1,6,grey%linewidth 1%snaptogrid%userdraw crosshairs,blue%mouse red,22
  3787.         */
  3788.         fprintf(js_include_file,"\nx_use_snap_to_grid = 1;y_use_snap_to_grid = 1;");
  3789.         break;
  3790.  
  3791.         case SQUARE:
  3792.         /*
  3793.         @ square x,y,side (px) ,color
  3794.         @ draw a square with left top corner (x:y) with side 'side' in color 'color'
  3795.         @ use command 'fsquare x,y,side,color' for a filled square
  3796.         @ use command/keyword  <a href='#filled'>'filled'</a> before command 'square x,y,side,color'
  3797.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
  3798.         @%square%size 400,400%xrange -10,10%yrange -10,10%linewidth 3%filled%fillcolor blue%square 0,0,120,green
  3799.         */
  3800.             for(i=0;i<4;i++){
  3801.                 switch(i){
  3802.                     case 0:double_data[0] = get_real(infile,0);break; /* x1-values */
  3803.                     case 1:double_data[1] = get_real(infile,0);break; /* y1-values */
  3804.                     case 2:double_data[2] = get_real(infile,0);break; /* width in px */
  3805.                     case 3:stroke_color = get_color(infile,1);/* name or hex color */
  3806.                            decimals = find_number_of_digits(precision);
  3807.                            double_data[3] = double_data[0] + (xmax - xmin)*double_data[2]/xsize;
  3808.                            double_data[4] = double_data[1] + -1*(ymax - ymin)*double_data[2]/ysize;
  3809.                            fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,1,[%.*f,%.*f,%.*f,%.*f],[%.*f,%.*f,%.*f,%.*f],[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[3],decimals,double_data[3],decimals,double_data[0],decimals,double_data[1],decimals,double_data[1],decimals,double_data[4],decimals,double_data[4],line_width,line_width,line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  3810.                            if(onclick > 0){click_cnt++;}/* click_cnt++; */
  3811.                            reset();break;
  3812.                     default: break;
  3813.                 }
  3814.             }
  3815.             break;
  3816.            
  3817.         case STATUS:
  3818.         /*
  3819.         @ status
  3820.         @ keyword
  3821.         @ alernative : nostatus
  3822.         @ used to override the effects of "status=done" in wims (answer.phtml)
  3823.         @ affects 'readonly' in inputfields / textarea's in canvasimage and all userdraw based commands
  3824.         @ e.g.: if keyword 'status' is set, the pupil will be able to modify the canvas when the 'wims $status variable' is set to 'done'
  3825.         */
  3826.  
  3827.             fprintf(js_include_file,"\nwims_status=\"waiting\";\n");
  3828.             break;
  3829.  
  3830.         case STRING:
  3831.         /*
  3832.          @ string color,x,y,the text string
  3833.          @ may be set "onclick" or "drag xy"
  3834.          @ unicode supported: string red,0,0,\\u2232
  3835.          @ use a command like 'fontfamily italic 24px Ariel' <br />to set fonts on browser that support font change
  3836.          @%string%size 400,400%xrange -10,10%yrange -10,10%fontfamily 14px Ariel%crosshair -3,-3,red%crosshair 3,3,blue%string red,-3,-3,Hello World%fontfamily Italic 18px Ariel%string red,3,3,Hello World%fontfamily 22pt STIX%string black,-10,8,\\u03B1 \\u03B2 \\u03B3 \\u03B4 \\u03B5 \\u03B6 \\u03B7 \\u03B8 \\u03B9 \\u03BA \\u03BB \\u03BC \\u03BD \\u03BE \\u03BF
  3837.         */
  3838.             for(i=0;i<5;i++){
  3839.                 switch(i){
  3840.                     case 0: stroke_color = get_color(infile,0);break;/* name or hex color */
  3841.                     case 1: double_data[0] = get_real(infile,0);break; /* x in xrange*/
  3842.                     case 2: double_data[1] = get_real(infile,0);break; /* y in yrange*/
  3843.                     case 3: decimals = find_number_of_digits(precision);
  3844.                         temp = get_string_argument(infile,1);
  3845.                         decimals = find_number_of_digits(precision);
  3846.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,14,[%.*f],[%.*f],[30],[30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[1],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,0,0,0,use_rotate,angle,temp,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  3847.                         if(onclick > 0){click_cnt++;}
  3848.                         /* click_cnt++;*/
  3849.                         reset();
  3850.                         break;
  3851.                     default:break;
  3852.                 }
  3853.             }
  3854.             break;
  3855.  
  3856.         case STRINGUP:
  3857.         /*
  3858.          @ stringup color,x,y,rotation_degrees,the text string
  3859.          @ can <b>not</b> be set "onclick" or "drag xy" (because of translation matrix...mouse incompatible)
  3860.          @ unicode supported: stringup red,0,0,45,\\u2232
  3861.          @ use a command like 'fontfamily bold 34px Courier' <br />to set fonts on browser that support font change
  3862.          @ you could use keyword <a href='#yoffset'>yoffset</a> to -sometimes- do a small correction of text placement under/above a point<br />(e.g. text &amp; point have thesame coordinates)
  3863.          @%stringup%size 400,400%xrange -10,10%yrange -10,10%fontfamily 14px Ariel%crosshair -3,0,red%crosshair 3,0,blue%stringup red,-3,0,-90,Hello World%stringup red,-3,0,-45,Hello World%stringup red,-3,0,45,Hello World%stringup red,-3,0,90,Hello World%stringup blue,3,0,-90,Hello World%stringup blue,3,0,-45,Hello World%stringup blue,3,0,45,Hello World%stringup blue,3,0,90,Hello World
  3864.  
  3865.         */
  3866.             if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}   /* can not be added to shape library : rotate / mouse issues */
  3867.             for(i=0;i<6;i++){
  3868.                 switch(i){
  3869.                     case 0: font_color = get_color(infile,0);break;/* name or hex color */
  3870.                     case 1: int_data[0] = x2px(get_real(infile,0));break; /* x */
  3871.                     case 2: int_data[1] = y2px(get_real(infile,0));break; /* y */
  3872.                     case 3: double_data[0] = get_real(infile,0);break;/* rotation */
  3873.                     case 4: decimals = find_number_of_digits(precision);
  3874.                             temp = get_string_argument(infile,1);
  3875.                             string_length = snprintf(NULL,0,"draw_text(%d,%d,%d,%d,\"%s\",\"%s\",%.2f,%.2f,\"%s\",%d,%.2f,%d,%s,%d);\n",STATIC_CANVAS,int_data[0],int_data[1],font_size,font_family,font_color,stroke_opacity,double_data[0],temp,use_rotate,angle,use_affine,affine_matrix,use_offset);
  3876.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3877.                             snprintf(tmp_buffer,string_length,"draw_text(%d,%d,%d,%d,\"%s\",\"%s\",%.2f,%.2f,\"%s\",%d,%.2f,%d,%s,%d);\n",STATIC_CANVAS,int_data[0],int_data[1],font_size,font_family,font_color,stroke_opacity,double_data[0],temp,use_rotate,angle,use_affine,affine_matrix,use_offset);
  3878.                             add_to_buffer(tmp_buffer);
  3879.                             break;
  3880.                     default:break;
  3881.                 }
  3882.             }
  3883.             reset();
  3884.             break;
  3885.  
  3886.         case STYLE:
  3887.         /*
  3888.          @ highlight color,opacity,linewidth
  3889.          @ NOT IMPLEMENTED
  3890.          @ use command "onclick" : when the object receives a userclick it will increase its linewidth
  3891.         */
  3892.             break;
  3893.  
  3894.  
  3895.         case STROKECOLOR:
  3896.         /*
  3897.         @ strokecolor colorname or #hex
  3898.         @ to be used for commands that do not supply a color argument (like command 'linegraph')
  3899.         */
  3900.             stroke_color = get_color(infile,1);
  3901.             break;
  3902.  
  3903.         case FLY_TEXT:
  3904.         /*
  3905.         @ text fontcolor,x,y,font,text_string
  3906.         @ font may be described by keywords : giant,huge,normal,small,tiny
  3907.         @ use command 'fontsize' to increase base fontsize for these keywords
  3908.         @ may be set "onclick" or "drag xy"
  3909.         @ backwards compatible with flydraw
  3910.         @ unicode supported: text red,0,0,huge,\\u2232
  3911.         @ use command 'string' combined with 'fontfamily' for a more fine grained control over html5 canvas text element
  3912.         @ Avoid  mixing old flydraw commands 'text' 'textup' with new canvasdraw commands 'string' stringup'<br />If the fontfamily was set completely like "fontfamily italic 24px Ariel".<br />In that case reset 'fontfamily' to something lke 'fontfamily Ariel' before the old flydraw commands.
  3913.         @%text%size 400,400%xrange -10,10%yrange -10,10%fontsize 14%onclick%drag xy%text green,-4,-4,small,Hello World%drag xy%text red,-4,-2,large,Hello World%drag xy%text blue,-4,0,huge,Hello World%drag xy%text green,-4,3,giant,Hello World%drag xy
  3914.         */
  3915.             for(i = 0; i < 5 ;i++){
  3916.                 switch(i){
  3917.                     case 0: stroke_color = get_color(infile,0);break;/* font_color == stroke_color name or hex color */
  3918.                     case 1: double_data[0] = get_real(infile,0);break; /* x */
  3919.                     case 2: double_data[1] = get_real(infile,0);break; /* y */
  3920.                     case 3: fly_font = get_string_argument(infile,0);
  3921.                             if(strcmp(fly_font,"giant") == 0){
  3922.                                 fly_font_size = (int)(font_size + 24);
  3923.                             }
  3924.                             else
  3925.                             {
  3926.                                 if(strcmp(fly_font,"huge") == 0){
  3927.                                     fly_font_size = (int)(font_size + 14);
  3928.                                 }
  3929.                                 else
  3930.                                 {
  3931.                                     if(strcmp(fly_font,"large") == 0){
  3932.                                         fly_font_size = (int)(font_size + 6);
  3933.                                         }
  3934.                                         else
  3935.                                         {
  3936.                                             if(strcmp(fly_font,"small") == 0){
  3937.                                                 fly_font_size = (int)(font_size - 4);
  3938.                                                 if(fly_font_size<0){fly_font_size = 8;}
  3939.                                         }
  3940.                                     }
  3941.                                 }
  3942.                             }
  3943.                             break;
  3944.                     case 4:
  3945.                         temp = get_string_argument(infile,1);
  3946.                         decimals = find_number_of_digits(precision);
  3947.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,14,[%.*f],[%.*f],[30],[30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[1],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,0,0,0,use_rotate,angle,temp,fly_font_size,"null",use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  3948.                         if(onclick > 0){click_cnt++;}
  3949.                         /* click_cnt++;*/
  3950.                         reset();
  3951.                         break;
  3952.                     default:break;
  3953.                 }
  3954.             }
  3955.             break;
  3956.         case TEXTAREA:
  3957.         /*
  3958.          @ textarea x,y,cols,rows,readonly,value
  3959.          @ may be further controlled by <a href="#inputstyle">"inputstyle"</a>
  3960.          @ if "$status=done"  (e.g. in answer.phtml) the inputfield will be cleared and set readonly<br />override this by keyword <a href="#status">'status'.</a>
  3961.          @ if mathml inputfields are present and / or some userdraw is performed, these data will <b>not</b> be send as well (javascript:read_canvas();)
  3962.          @ keyword 'xoffset | centered' is not active for commande 'textarea'
  3963.          @%textarea%size 400,400%xrange -10,10%yrange -10,10%inputstyle color:red;background-color:lightblue;font-size:14px;text-align:center%textarea -3,-2,6,3,1,?%inputstyle color:blue;background-color:yellow;font-size:14px;text-align:center%textarea 0,-2,8,2,1,?
  3964.         */
  3965.             if( js_function[DRAW_TEXTAREAS] != 1 ){ js_function[DRAW_TEXTAREAS] = 1;}
  3966.             for(i = 0 ; i<6;i++){
  3967.                 switch(i){
  3968.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in px */
  3969.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in px */
  3970.                     case 2: int_data[2]=abs( (int)(get_real(infile,0)));break;/* cols */
  3971.                     case 3: int_data[3]=abs( (int)(get_real(infile,0)));break;/* rows */
  3972.                     case 4: if( get_real(infile,1) >0){int_data[4] = 1;}else{int_data[3] = 0;};break; /* readonly */
  3973.                     case 5: temp = get_string_argument(infile,1);
  3974.                             string_length = snprintf(NULL,0,  "draw_textareas(%d,%d,%d,%d,%d,%d,%d,\"%s\",\"%s\");\n",canvas_root_id,input_cnt,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],input_style,temp);
  3975.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3976.                             snprintf(tmp_buffer,string_length,"draw_textareas(%d,%d,%d,%d,%d,%d,%d,\"%s\",\"%s\");\n",canvas_root_id,input_cnt,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],input_style,temp);
  3977.                             add_to_buffer(tmp_buffer);
  3978.                             input_cnt++;break;
  3979.                     default: break;
  3980.                 }
  3981.             }
  3982.             if(reply_format == 0 ){reply_format = 15;}
  3983.             reset();
  3984.             break;
  3985.  
  3986.         case TEXTFILL:
  3987.         /*
  3988.         @ textfill x0,y0,color,some_text
  3989.         @ x0,y0 in xrange / yrange
  3990.         @ color will be used for the font color
  3991.         @ use command <a href="#fontfamily">fontfamily</a> to set font type and size
  3992.         @ there is also a command <a href="#userdraw">userdraw textfill,color,some_text</a>
  3993.         @%textfill%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%fontfamily 24pt Ariel%circles red,0,0,3,3,3,6%textfill 4,4,blue, HALLO
  3994.         */
  3995.  
  3996.             js_function[DRAW_TEXTFILL] = 1;
  3997.             if(js_function[DRAW_FILLTOBORDER] != 1 ){/* use only once */
  3998.              js_function[DRAW_FILLTOBORDER] = 1;
  3999.              add_js_filltoborder(js_include_file,canvas_root_id,canvas_type);
  4000.             }
  4001.             decimals = find_number_of_digits(precision);
  4002.             for(i=0;i<4;i++){
  4003.                 switch(i){
  4004.                     case 0: double_data[0] = get_real(infile,0); break; /* x in px */
  4005.                     case 1: double_data[1] = get_real(infile,0); break; /* y in py */
  4006.                     case 2: font_color = get_color(infile,0); break;
  4007.                     case 3: temp = get_string(infile,1);
  4008.                     string_length = snprintf(NULL,0,"draw_textfill(%d,%*.f,%*.f,'%s','%s',%d,%d,'%s',false); ",FILL_CANVAS+fill_cnt,decimals,double_data[0],decimals,double_data[1],font_color,font_family,xsize,ysize,temp);
  4009.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  4010.                     snprintf(tmp_buffer,string_length,"draw_textfill(%d,%*.f,%*.f,'%s','%s',%d,%d,'%s',false); ",FILL_CANVAS+fill_cnt,decimals,double_data[0],decimals,double_data[1],font_color,font_family,xsize,ysize,temp);
  4011.                     add_to_buffer(tmp_buffer);
  4012.                     fill_cnt++;
  4013.                     break;
  4014.                     default:break;
  4015.                 }
  4016.             }
  4017.             reset();
  4018.         break;
  4019.  
  4020.  
  4021.         case FLY_TEXTUP:
  4022.         /*
  4023.          @ textup fontcolor,x,y,font,text_string
  4024.          @ can <b>not</b> be set "onclick" or "drag xy" (because of translaton matrix...mouse incompatible)
  4025.          @ font may be described by keywords : giant,huge,normal,small,tiny
  4026.          @ use command 'fontsize' to increase base fontsize for the keywords
  4027.          @ backwards compatible with flydraw
  4028.          @ unicode supported: textup red,0,0,huge,\\u2232
  4029.          @ use command 'stringup' and 'fontfamily' for a more fine grained control over html5 canvas text element
  4030.          @ Avoid  mixing old flydraw commands 'text' 'textup' with new canvasdraw commands 'string' stringup'<br />If the fontfamily was set completely like "fontfamily italic 24px Ariel".<br />In that case reset 'fontfamily' to something lke 'fontfamily Ariel' before the old flydraw commands.
  4031.         */
  4032.             if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}
  4033.             for(i = 0; i<5 ;i++){
  4034.                 switch(i){
  4035.                     case 0: font_color = get_color(infile,0);break;/* name or hex color */
  4036.                     case 1: int_data[0] = x2px(get_real(infile,0));break; /* x */
  4037.                     case 2: int_data[1] = y2px(get_real(infile,0));break; /* y */
  4038.                     case 3: fly_font = get_string_argument(infile,0);
  4039.                             if(strcmp(fly_font,"giant") == 0){
  4040.                                 fly_font_size = (int)(font_size + 24);
  4041.                             }
  4042.                             else
  4043.                             {
  4044.                                 if(strcmp(fly_font,"huge") == 0){
  4045.                                     fly_font_size = (int)(font_size + 14);
  4046.                                 }
  4047.                                 else
  4048.                                 {
  4049.                                     if(strcmp(fly_font,"large") == 0){
  4050.                                         fly_font_size = (int)(font_size + 6);
  4051.                                         }
  4052.                                         else
  4053.                                         {
  4054.                                             if(strcmp(fly_font,"small") == 0){
  4055.                                                 fly_font_size = (int)(font_size - 4);
  4056.                                                 if(fly_font_size<0){fly_font_size = 8;}
  4057.                                         }
  4058.                                     }
  4059.                                 }
  4060.                             }
  4061.                             break;
  4062.                     case 4:
  4063.                     decimals = find_number_of_digits(precision);
  4064.                     temp = get_string_argument(infile,1);
  4065.                     string_length = snprintf(NULL,0,"draw_text(%d,%d,%d,%d,\"%s\",\"%s\",%.2f,90,\"%s\",%d,%.2f,%d,%s,%d);\n",STATIC_CANVAS,int_data[0],int_data[1],fly_font_size,"null",font_color,stroke_opacity,temp,use_rotate,angle,use_affine,affine_matrix,use_offset);
  4066.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  4067.                     snprintf(tmp_buffer,string_length,"draw_text(%d,%d,%d,%d,\"%s\",\"%s\",%.2f,90,\"%s\",%d,%.2f,%d,%s,%d);\n",STATIC_CANVAS,int_data[0],int_data[1],fly_font_size,"null",font_color,stroke_opacity,temp,use_rotate,angle,use_affine,affine_matrix,use_offset);
  4068.                     add_to_buffer(tmp_buffer);
  4069.                     break;
  4070.                     default:break;
  4071.                 }
  4072.             }
  4073.             reset();
  4074.             break;
  4075.  
  4076.  
  4077.         case TRACE_JSCURVE:
  4078.         /*
  4079.          @ trace_jscurve some_math_function
  4080.          @ will use a crosshair to trace the jsmath curve
  4081.          @ two inputfields will display the current x/y-values (numerical evaluation by javascript)
  4082.          @ default labels 'x' and 'y'<br />use commands 'xlabel some_x_axis_name' and 'ylabel some_y_axis_name' to customize the labels for the input fields
  4083.          @ use commands fontsize and inputstyle to format the fonts for labels and inputfields.
  4084.          @ use commands linewidth,strokecolor,crosshairsize to adjust the corsshair.
  4085.          @ the client browser will convert your math function to javascript math.<br />use parenthesis and rawmath : use 2*x instead of 2x etc etc<br />no check is done on the validity of your function and/or syntax<br />use error console to debug any errors...
  4086.         @ be aware that the formula's of the plotted function(s) can be found in the page javascript source
  4087.         */
  4088.             if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  4089.             if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  4090.             if( use_js_math == FALSE){
  4091.                 add_to_js_math(js_include_file);
  4092.                 use_js_math = TRUE;
  4093.             }
  4094.             add_trace_js_mouse(js_include_file,TRACE_CANVAS,canvas_root_id,stroke_color,get_string(infile,1),font_size,stroke_opacity,line_width,crosshair_size,input_style);
  4095.             break;
  4096.  
  4097.  
  4098.         case TRANGE:
  4099.         /*
  4100.         @ trange tmin,tmax
  4101.         @ alternative : ranget
  4102.         @ default -2,2
  4103.         */
  4104.             use_parametric = TRUE;
  4105.             for(i = 0 ; i<2; i++){
  4106.                 switch(i){
  4107.                     case 0: tmin = get_real(infile,0);break;
  4108.                     case 1: tmax = get_real(infile,1);break;
  4109.                     default: break;
  4110.                 }
  4111.             }
  4112.             if(tmin >= tmax ){canvas_error(" trange is not OK : tmin &lt; tmax!\n");}
  4113.             break;
  4114.         case TRANSLATION:
  4115.         /*
  4116.          @ translation tx,ty
  4117.          @ alternative : translate
  4118.          @ will translate the next objects tx in xrange and ty in yrange
  4119.          @ use command 'killtranstation' to end the command
  4120.         */
  4121.             for(i = 0 ; i<2;i++){
  4122.                 switch(i){
  4123.                     case 0: double_data[0] = get_real(infile,0);break;
  4124.                     case 1: double_data[1] = get_real(infile,1);
  4125.                         use_affine = TRUE;
  4126.                         decimals = find_number_of_digits(precision);
  4127.                         string_length = snprintf(NULL,0, "[1,0,0,1,%.*f,%.*f] ",decimals,double_data[0]*xsize/(xmax - xmin),decimals,-1*double_data[1]*ysize/(ymax - ymin));
  4128.                         check_string_length(string_length);affine_matrix = my_newmem(string_length+1);
  4129.                         snprintf(affine_matrix,string_length,"[1,0,0,1,%.*f,%.*f] ",decimals,double_data[0]*xsize/(xmax - xmin),decimals,-1*double_data[1]*ysize/(ymax - ymin));
  4130.                         break;
  4131.                     default: break;
  4132.                 }
  4133.             }
  4134.         break;
  4135.  
  4136.         case TRIANGLE:
  4137.         /*
  4138.          @ triangle x1,y1,x2,y2,x3,y3,color
  4139.          @ use ftriangle or keyword <a href='#filled'>'filled'</a> for a solid triangle
  4140.          @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
  4141.         */
  4142.             for(i=0;i<7;i++){
  4143.                 switch(i){
  4144.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  4145.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  4146.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  4147.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  4148.                     case 4: double_data[4] = get_real(infile,0);break; /* x */
  4149.                     case 5: double_data[5] = get_real(infile,0);break; /* y */
  4150.                     case 6: stroke_color = get_color(infile,1);/* name or hex color */
  4151.                         decimals = find_number_of_digits(precision);
  4152.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,5,%s,[30],[30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,double_xy2js_array(double_data,6,decimals),line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  4153.                         if(onclick > 0){click_cnt++;}
  4154.                         /* click_cnt++;*/
  4155.                         reset();
  4156.                         break;
  4157.                     default: break;
  4158.                 }
  4159.             }
  4160.             break;
  4161.         case TRIANGLES:
  4162.         /*
  4163.          @ triangles color,x1,y1,x2,y2,x3,y3,...
  4164.          @ use ftriangles or keyword <a href='#filled'>'filled'</a> for solid triangles
  4165.          @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> individually (!)
  4166.         */
  4167.             stroke_color = get_color(infile,0);/* name or hex color */
  4168.             i = 0;
  4169.             decimals = find_number_of_digits(precision);
  4170.             while( ! done ){
  4171.                 if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
  4172.                 double_data[0] = get_real(infile,0); /* x1 */
  4173.                 double_data[1] = get_real(infile,0); /* y1 */
  4174.                 double_data[2] = get_real(infile,0); /* x2 */
  4175.                 double_data[3] = get_real(infile,0); /* y2 */
  4176.                 double_data[4] = get_real(infile,0); /* x3 */
  4177.                 double_data[5] = get_real(infile,1); /* y3 */
  4178.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,5,%s,[30],[30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,double_xy2js_array(double_data,6,decimals),line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  4179.                 if(onclick > 0){click_cnt++;}
  4180.                 i = i + 6;
  4181.             }
  4182.             reset();
  4183.             break;
  4184.         case USERBOXPLOT:
  4185.         /*
  4186.          @ userboxplot
  4187.          @ keyword, no arguments
  4188.          @ use before command <a href="#boxplot">'boxplot x_or_y,box-height_or_box-width,x_or_y-position'</a>
  4189.          @ if set, the student will have to calculate "min,Q1,median,Q3,max" and feed these data into the 'draw_boxplot' function
  4190.          @ for example:<br />put the canvas-script into a html element with id='boxplot'and set style='display:none'<br />define a variable called 'student_boxplot' and fill it with the 5 student-data (from inputfields or something)<br />var student_boxplot = new Array(5)<br />function show_boxplot(){<br />student_boxplot[0] = min;<br />student_boxplot[1] = Q1;<br />student_boxplot[2] = median;<br />student_boxplot[3] = Q3;<br />student_boxplot[4] = max;<br />document.getElementById('boxplot').style.display = "block";<br />draw_boxplot(12345,1,2.00,5.00,[0,0,0,0,0],4,"0,0,255",0.78,"255,165,0",0.60,1,0,1,1);<br />};<br />In the canvas-script the function draw_boxplot has the following arguments:<br />draw_boxplot=function(canvas_type,xy,hw,cxy,data,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype0,dashtype1)
  4191.         */
  4192.             if( js_function[DRAW_BOXPLOT] != 1 ){ js_function[DRAW_BOXPLOT] = 1;}
  4193.             fprintf(js_include_file,"var boxplot_source = 3;\n");
  4194.             js_function[DRAW_JSBOXPLOT] = 2;
  4195.         break;
  4196.  
  4197.         case USERBOXPLOTDATA:
  4198.         /*
  4199.          @ userboxplotdata
  4200.          @ keyword, no arguments
  4201.          @ use before command <a href="#boxplot">'boxplot x_or_y,box-height_or_box-width,x_or_y-position'</a>
  4202.          @ if set, the student will have to generate some statistical data. These data should be put in a named array "student_boxplot_data"
  4203.          @ "min,Q1,median,Q3,max" are calculated by a js-function and the 'draw_boxplot' function will draw a boxplot.
  4204.          @ see command <a href="#userboxplot">'userboxplot'</a> for calling 'draw_boxplot()'
  4205.         */
  4206.             if( js_function[DRAW_BOXPLOT] != 1 ){ js_function[DRAW_BOXPLOT] = 1;}
  4207.             fprintf(js_include_file,"var boxplot_source = 2;\n");
  4208.             js_function[DRAW_JSBOXPLOT] = 1;
  4209.  
  4210.         break;
  4211.  
  4212.         case USERDRAW:
  4213.         /*
  4214.         @ userdraw object_type,color
  4215.         @ only a single object_type is allowed.
  4216.         @ for multiple object user drawings use command <a href="#multidraw">'multidraw'</a>
  4217.         @ implemented object_type: <ul><li>point</li><li>points</li><li>crosshair</li><li>crosshairs</li><li>line</li><li>lines</li><li>vline</li><li>vlines</li><li>hline</li><li>hlines</li><li>demiline</li><li>demilines</li><li>segment</li><li>segments</li><li>polyline | brokenline </li><li>circle</li><li>circles</li><li>arrow</li><li>arrow2 (double arrow)</li><li>arrows</li><li>arrows2 (double arrows)</li><li>triangle</li><li>polygon</li><li>poly[3-9] (e.g poly3 ... poly7...poly9 </li><li>rect</li><li>roundrect</li><li>rects</li><li>roundrects</li><li>freehandline | path</li><li>freehandlines | paths</li><li>clickfill : fill the clicked area with color<br />multiple areas may be selected <br />multiple colors may be provided using commands <a href='#colorpalette'>colorpalette color1,color2,color3,...</a> or <a href='#multifillcolors'>multifillcolors color1,color2,color_3,...</a> use <a href='#replyformat'>replyformat 10</a> for checking the user click color ... reply=x1:y1:color1,x2:y2:color2...<br/>attention: this will <b>not</b> work for pattern filling, because the pattern image is only generated once and after creation can not be changed !<br />the opacity of this image on a separate canvas is set to 0.01 and not 0 (!!)...in the 'fill algorithm' the opacity of the matching pixels is set to 1</li><li>dotfill : fill the clicked area with a dot pattern; use command linewidth to change dot size</li><li>diamondfill : fill the clicked area with a diamond pattern</li><li>hatchfill : fill the clicked area with a hatch pattern</li><li>gridfill : fill the clicked area with a grid pattern</li><li>textfill: fill the clicked area with a repeating string<br />userdraw textfill,blue,some_text<br />use command <a href="#fontfamily">fontfamily</a> to adjust text style and size</li><li>'clickfill | pattern filling' in general:<br />the clicks may be set <a href="#snaptogrid">'snaptogrid'</a><br />can be used together with command <a href="#floodfill">'floodfill' or 'fill'</a><br /><b>always</b> use together with command <a href="clearbutton">'clearbutton some_text'</a> for removal of all click_colored areas<br />the function read_canvas() will return the click coordinates in the sequence of the user clicks<br />use command <a href="#canvastype">'canvastype'</a> to fill another canvas (default should be fine: DRAG_CANVAS = 5)</li><li>text</li><li>arc</li><li>arcs</li><li>input<br/>place a single inputfield on 'canvas'<br />use commands 'inputstyle' for css styling: use command 'linewidth' for adjusting the input field size (default 1)</li><li>inputs<br/>place multiple inputfield : placing inputfields on top of each other is not possible</li></ul>
  4218.         @ note: mouselisteners are only active if "$status != done " (eg only drawing in an active/non-finished exercise) <br /> to overrule use command/keyword "status" (no arguments required)
  4219.         @ note: object_type text: Any string or multiple strings may be placed anywhere on the canvas.<br />"backspace / delete / esc" will remove typed text if the mouse is clicked non the text.<br />You will need to hit "enter" to add the text to the array "userdraw_txt"<br />Placing the cursor somewhere on a typed text and hitting "delete/backspace/esc" , a confirm will popup asking to delete the selected text. This text will be removed from the "userdraw_txt()" answer array.<br />Use commands 'fontsize' and 'fontfamily' to control the text appearance
  4220.         @ note: object_type polygone: Will be finished (the object is closed) when clicked on the first point of the polygone again.
  4221.         @ note: all objects will be removed -after a javascript confirm box- when clicked on an object point with middle or right mouse button (e.g. event.which != 1 : all buttons but left)
  4222.         @ use a prefix 'filled' or 'f' to set fillable objects filled. (fcircles,filledcircles etc)
  4223.         @ for non solid filling, use command <a href="#fillpattern">fillpattern grid,hatch,diamond,dot</a>
  4224.         @ use "opacity int,int"  and "fillcolor color" to trigger coloured filling of fillable objects
  4225.         @ use command "dashed" and/or "dashtype int,int" to trigger dashing
  4226.         @ use command "replyformat int" to control / adjust output formatting of javascript function read_canvas();
  4227.         @ may be combined with onclick or drag xy  of other components of flyscript objects (although not very usefull...)
  4228.         @ may be combined with keyword 'userinput_xy'
  4229.         @ note: when zooming / panning after a drawing, the drawing will NOT be zoomed / panned...this is a "design" flaw and not a feature <br />To avoid trouble do not use zooming / panning together width userdraw.!<br />use command <a href="#multidraw">multidraw</a> is this is a problem for you...
  4230.         @%userdraw_canvastype_a%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%snaptogrid%replyformat 10%colorpalette orange,yellow,red,green,lightgreen,blue,lightblue,cyan%canvastype 4%userdraw clickfill,blue%clearbutton REMOVE LAST RECTANGLE
  4231.         @%userdraw_canvastype_b%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%canvastype 4%snaptogrid%replyformat 10%userdraw dotfill,blue%clearbutton REMOVE LAST RECTANGLE
  4232.         @%userdraw_rect%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw rect,green
  4233.         @%userdraw_rects%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw rects,green
  4234.         @%userdraw_frect%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw frect,green
  4235.         @%userdraw_frects%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw frects,green
  4236.         @%userdraw_roundrect%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw roundrect,green
  4237.         @%userdraw_roundrects%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw roundrects,green
  4238.         @%userdraw_froundrect%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw froundrect,green
  4239.         @%userdraw_froundrects%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw froundrects,green
  4240.         @%userdraw_line%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw line,green
  4241.         @%userdraw_lines%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw lines,green
  4242.         @%userdraw_vline%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw vline,green
  4243.         @%userdraw_vlines%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw vlines,green
  4244.         @%userdraw_hline%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw hline,green
  4245.         @%userdraw_hlines%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw hlines,green
  4246.         @%userdraw_demiline%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw demiline,green
  4247.         @%userdraw_demilines%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw demilines,green
  4248.         @%userdraw_arc%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw arc,green
  4249.         @%userdraw_arcs%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw arcs,green
  4250.         @%userdraw_point%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw point,green
  4251.         @%userdraw_points%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw points,green
  4252.         @%userdraw_arrow%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw arrow,green
  4253.         @%userdraw_arrows%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw arrows,green
  4254.         @%userdraw_arrow2%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw arrow2,green
  4255.         @%userdraw_arrows2%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw arrows2,green
  4256.         @%userdraw_crosshair%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw crosshair,green
  4257.         @%userdraw_crosshairs%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw crosshairs,green
  4258.         @%userdraw_circle%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw circle,green
  4259.         @%userdraw_circles%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw circles,green
  4260.         @%userdraw_segment%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw segment,green
  4261.         @%userdraw_segments%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw segments,green
  4262.         @%userdraw_line%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw line,green
  4263.         @%userdraw_lines%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw lines,green
  4264.         @%userdraw_triangle%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw triangle,green
  4265.         @%userdraw_poly5%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw poly5,green
  4266.         @%userdraw_filled_poly5%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%filled%userdraw poly5,green
  4267.         @%userdraw_poly7%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw poly7,green
  4268.         @%userdraw_filled_poly7%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%filled%userdraw poly7,green
  4269.         @%userdraw_polyline%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw polyline,green
  4270.         @%userdraw_freehandline%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw freehandline,green
  4271.         @%userdraw_filled_freehandline%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%filled%userdraw freehandline,green
  4272.         @%userdraw_freehandlines%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw freehandlines,green
  4273.         @%userdraw_input%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%userdraw input,green
  4274.         @%userdraw_inputs%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%userdraw inputs,green
  4275.         @%userdraw_text%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%fontfamily 42px Courier%userdraw text,green
  4276.         */
  4277.             if( use_userdraw == TRUE ){ /* only one object type may be drawn*/
  4278.                 canvas_error("Only one userdraw primitive may be used in command 'userdraw' use command 'multidraw' for this...");
  4279.             }
  4280.             reply_precision = precision;
  4281.             use_userdraw = TRUE;
  4282.             fprintf(js_include_file,"\n<!-- begin userdraw mouse events -->\n\
  4283.             userdraw_x = new Array();userdraw_y = new Array();\
  4284.             userdraw_radius = new Array();var xy_cnt=0;var canvas_userdraw = create_canvas%d(%d,xsize,ysize);\
  4285.             var context_userdraw = canvas_userdraw.getContext(\"2d\");var use_dashed = %d;\
  4286.             if(use_dashed == 1){if( context_userdraw.setLineDash ){context_userdraw.setLineDash([%d,%d]);}else{if(context_userdraw.mozDash){context_userdraw.mozDash = [%d,%d];};};};\
  4287.             if(wims_status != \"done\"){\
  4288.             canvas_div.addEventListener(\"mousedown\" ,user_draw,false);\
  4289.             canvas_div.addEventListener(\"mousemove\" ,user_drag,false);\
  4290.             canvas_div.addEventListener(\"touchstart\",function(e){ e.preventDefault();user_draw(e.changedTouches[0]);},false);\
  4291.             canvas_div.addEventListener(\"touchmove\" ,function(e){ e.preventDefault();user_drag(e.changedTouches[0]);},false);\
  4292.             canvas_div.addEventListener(\"touchend\"  ,function(e){ e.preventDefault();user_draw(e.changedTouches[0]);},false);\
  4293.             }\n<!-- end userdraw mouse & touch events -->",canvas_root_id,DRAW_CANVAS,use_dashed,dashtype[0],dashtype[1],dashtype[0],dashtype[1]);
  4294.             draw_type = get_string_argument(infile,0);
  4295.             stroke_color = get_color(infile,1);
  4296.             if( strcmp(draw_type,"point") == 0 ){
  4297.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  4298.                 if(reply_format == 0 ){reply_format = 8;}
  4299.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  4300. /*
  4301. type = 0 : a point ...radius is fixed                                                                                  
  4302. type = 1 : a circle ... read inputfield userinput_r                                                                    
  4303. num = 1 : a single point / circle                                                                                      
  4304. num = 2 : multiple points / circles
  4305. */
  4306.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4307.                 if(use_input_xy == 1){
  4308.                     add_input_circle(js_include_file,0,1);
  4309.                     add_input_xy(js_include_file,canvas_root_id,font_size,input_style);
  4310.                 }
  4311.                 add_js_points(js_include_file,1,draw_type,line_width,line_width,stroke_color,stroke_opacity,1,stroke_color,stroke_opacity,0,1,1);
  4312.             }
  4313.             else
  4314.             if( strcmp(draw_type,"points") == 0 ){
  4315.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  4316.                 if(reply_format == 0 ){reply_format = 8;}
  4317.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  4318.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4319.                 if(use_input_xy == 1){
  4320.                     add_input_circle(js_include_file,0,2);
  4321.                     add_input_xy(js_include_file,canvas_root_id,font_size,input_style);
  4322.                 }
  4323.                 add_js_points(js_include_file,2,draw_type,line_width,line_width,stroke_color,stroke_opacity,1,stroke_color,stroke_opacity,0,1,1);
  4324.             }
  4325.             else
  4326.             if( strcmp(draw_type,"segment") == 0 ){
  4327.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  4328.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  4329.                 if(reply_format == 0){reply_format = 11;}
  4330.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4331.                 if(use_input_xy == 1){
  4332.                     add_input_segment(js_include_file,1);
  4333.                     add_input_x1y1x2y2(js_include_file,canvas_root_id,font_size,input_style);
  4334.                 }
  4335.                 add_js_segments(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  4336.             }
  4337.             else
  4338.             if( strcmp(draw_type,"polyline") == 0 ||  strcmp(draw_type,"brokenline") == 0 ){
  4339.                 if( js_function[DRAW_POLYLINE] != 1 ){ js_function[DRAW_POLYLINE] = 1;}
  4340.                 if(reply_format == 0){reply_format = 23;}
  4341.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4342.                 if( use_input_xy == 1 ){
  4343.                     add_input_polyline(js_include_file);
  4344.                     add_input_xy(js_include_file,canvas_root_id,font_size,input_style);
  4345.                 }
  4346.                 add_js_polyline(js_include_file,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  4347.             }
  4348.             else
  4349.             if( strcmp(draw_type,"segments") == 0 ){
  4350.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  4351.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  4352.                 if(reply_format == 0){reply_format = 11;}
  4353.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4354.                 if(use_input_xy == 1){
  4355.                     add_input_segment(js_include_file,2);
  4356.                     add_input_x1y1x2y2(js_include_file,canvas_root_id,font_size,input_style);
  4357.                 }
  4358.                 add_js_segments(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  4359.             }
  4360.             else
  4361.             if( strcmp(draw_type,"circle") == 0 || strcmp(draw_type,"fcircle") == 0  || strcmp(draw_type,"filledcircle") == 0 ){
  4362.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  4363.                 if(reply_format == 0){reply_format = 10;}
  4364.                 if(strstr(draw_type,"f") != NULL ){if( use_pattern != 0 ){ use_filled = use_pattern;}else{use_filled = 1;}}
  4365.                 /* 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n in x/y-range */
  4366.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4367.                 if(use_input_xy == 1){
  4368. /*
  4369. type = 0 : a point ...radius is fixed                                                                                  
  4370. type = 1 : a circle ... read inputfield userinput_r                                                                    
  4371. num = 1 : a single point / circle                                                                                      
  4372. num = 2 : multiple points / circles
  4373. */
  4374.                     add_input_circle(js_include_file,1,1);
  4375.                     add_input_xyr(js_include_file,canvas_root_id,font_size,input_style);
  4376.                 }
  4377.                 add_js_circles(js_include_file,1,draw_type,line_width,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  4378.             }
  4379.             else
  4380.             if( strcmp(draw_type,"circles") == 0 || strcmp(draw_type,"fcircles") == 0 || strcmp(draw_type,"filledcircles") == 0 ){
  4381.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  4382.                 if(reply_format == 0){reply_format = 10;}
  4383.                 if(strstr(draw_type,"f") != NULL ){if( use_pattern != 0 ){ use_filled = use_pattern;}else{use_filled =1;}}
  4384.                 /* 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n in x/y-range */
  4385.                 add_js_circles(js_include_file,2,draw_type,line_width,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  4386.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4387.                 if(use_input_xy == 1){
  4388.                     add_input_circle(js_include_file,1,2);
  4389.                     add_input_xyr(js_include_file,canvas_root_id,font_size,input_style);
  4390.                 }
  4391.             }
  4392.             else
  4393.             if(strcmp(draw_type,"crosshair") == 0 ){
  4394.                 if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  4395.                 if(reply_format == 0){reply_format = 8;}
  4396.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  4397.                 add_js_crosshairs(js_include_file,1,draw_type,line_width,crosshair_size ,stroke_color,stroke_opacity);
  4398.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4399.                 if(use_input_xy == 1){
  4400.                     add_input_crosshair(js_include_file,1);
  4401.                     add_input_xy(js_include_file,canvas_root_id,font_size,input_style);
  4402.                 }
  4403.             }
  4404.             else
  4405.             if(strcmp(draw_type,"crosshairs") == 0 ){
  4406.                 if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  4407.                 if(reply_format == 0){reply_format = 8;}
  4408.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  4409.                 add_js_crosshairs(js_include_file,2,draw_type,line_width,crosshair_size ,stroke_color,stroke_opacity);
  4410.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4411.                 if(use_input_xy == 1){
  4412.                     add_input_crosshair(js_include_file,2);
  4413.                     add_input_xy(js_include_file,canvas_root_id,font_size,input_style);
  4414.                 }
  4415.             }
  4416.             else
  4417.             if(strcmp(draw_type,"freehandline") == 0 ){
  4418.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  4419.                 if(reply_format == 0){reply_format = 6;}
  4420.                 add_js_paths(js_include_file,1,draw_type,line_width,0,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  4421.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  4422.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4423.             }
  4424.             else
  4425.             if(strcmp(draw_type,"freehandlines") == 0 ){
  4426.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  4427.                 if(reply_format == 0){reply_format = 6;}
  4428.                 add_js_paths(js_include_file,2,draw_type,line_width,0,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  4429.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  4430.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4431.             }
  4432.             else
  4433.             if(strcmp(draw_type,"path") == 0 || strcmp(draw_type,"fpath") == 0 || strcmp(draw_type,"filledpath") == 0 ){
  4434.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  4435.                 if( strstr(draw_type,"f") != NULL ){if( use_pattern != 0 ){ use_filled = use_pattern;}else{use_filled =1;}}
  4436.                 if(reply_format == 0){reply_format = 6;}
  4437.                 add_js_paths(js_include_file,1,draw_type,line_width,1,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  4438.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  4439.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4440.             }
  4441.             else
  4442.             if(strcmp(draw_type,"paths") == 0 || strcmp(draw_type,"fpaths") == 0  || strcmp(draw_type,"filledpaths") == 0 ){
  4443.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  4444.                 if( strstr(draw_type,"f") != NULL ){if( use_pattern != 0 ){ use_filled = use_pattern;}else{use_filled =1;}}
  4445.                 if(reply_format == 0){reply_format = 6;}
  4446.                 add_js_paths(js_include_file,2,draw_type,line_width,1,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  4447.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  4448.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4449.             }
  4450.             else
  4451.             if(strcmp(draw_type,"arrows") == 0 ){
  4452.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  4453.                 if(reply_format == 0){reply_format = 11;}
  4454.                 add_js_arrows(js_include_file,2,draw_type,line_width,1,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  4455.                 if(use_input_xy == 1){
  4456.                     add_input_arrow(js_include_file,2);
  4457.                     add_input_x1y1x2y2(js_include_file,canvas_root_id,font_size,input_style);
  4458.                 }
  4459.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4460.             }
  4461.             else
  4462.             if(strcmp(draw_type,"arrows2") == 0 ){
  4463.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  4464.                 if(reply_format == 0){reply_format = 11;}
  4465.                 add_js_arrows(js_include_file,2,draw_type,line_width,2,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  4466.                 if(use_input_xy == 1){
  4467.                     add_input_arrow(js_include_file,1);
  4468.                     add_input_x1y1x2y2(js_include_file,canvas_root_id,font_size,input_style);
  4469.                 }
  4470.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4471.             }
  4472.             else
  4473.             if(strcmp(draw_type,"arrow2") == 0 ){
  4474.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  4475.                 if(reply_format == 0){reply_format = 11;}
  4476.                 add_js_arrows(js_include_file,1,draw_type,line_width,2,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  4477.                 if(use_input_xy == 1){
  4478.                     add_input_arrow(js_include_file,1);
  4479.                     add_input_x1y1x2y2(js_include_file,canvas_root_id,font_size,input_style);
  4480.                 }
  4481.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4482.             }
  4483.             else
  4484.             if(strcmp(draw_type,"arrow") == 0 ){
  4485.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  4486.                 if(reply_format == 0){reply_format = 11;}
  4487.                 add_js_arrows(js_include_file,1,draw_type,line_width,1,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  4488.                 if(use_input_xy == 1){
  4489.                     add_input_arrow(js_include_file,1);
  4490.                     add_input_x1y1x2y2(js_include_file,canvas_root_id,font_size,input_style);
  4491.                 }
  4492.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4493.             }
  4494.             else
  4495.             if(strcmp(draw_type,"polygon") == 0 || strcmp(draw_type,"fpolygon") == 0 || strcmp(draw_type,"filledpolygon") == 0){
  4496.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  4497.                 if(strstr(draw_type,"f") != NULL ){if( use_pattern != 0 ){ use_filled = use_pattern;}else{use_filled =1;}}
  4498.                 if(reply_format == 0){reply_format = 2;}
  4499.                 add_js_poly(js_include_file,-1,draw_type,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  4500.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  4501.                 if(use_input_xy == 2){
  4502.                   add_textarea_polygon(js_include_file);
  4503.                   add_textarea_xy(js_include_file,canvas_root_id,input_style);
  4504.                 }
  4505.             }
  4506.             else
  4507.             if(strncmp(draw_type,"poly",4) == 0){
  4508.                 if(strlen(draw_type) < 5){canvas_error("use command \"userdraw poly[3-9],color\" eg userdraw poly6,blue");}
  4509.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  4510.                 if(reply_format == 0){reply_format = 2;}
  4511.                 add_js_poly(js_include_file,(int) (draw_type[4]-'0'),draw_type,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  4512.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  4513.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4514.             }
  4515.             else
  4516.             if(strcmp(draw_type,"triangle") == 0 || strcmp(draw_type,"ftriangle") == 0 || strcmp(draw_type,"filledtriangle") == 0){
  4517.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  4518.                 if(strstr(draw_type,"f") != NULL ){if( use_pattern != 0 ){ use_filled = use_pattern;}else{use_filled =1;}}
  4519.                 if(reply_format == 0){reply_format = 2;}
  4520.                 add_js_poly(js_include_file,3,draw_type,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  4521.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  4522.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4523.             }
  4524.             else
  4525.             if( strcmp(draw_type,"hline") == 0 ){
  4526.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  4527.                 if(reply_format == 0){reply_format = 11;}
  4528.                 add_js_hlines(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  4529.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  4530.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4531.             }
  4532.             else
  4533.             if( strcmp(draw_type,"hlines") == 0 ){
  4534.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  4535.                 if(reply_format == 0){reply_format = 11;}
  4536.                 add_js_hlines(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  4537.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  4538.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4539.             }
  4540.             else
  4541.             if( strcmp(draw_type,"vline") == 0 ){
  4542.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  4543.                 if(reply_format == 0){reply_format = 11;}
  4544.                 add_js_hlines(js_include_file,3,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  4545.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  4546.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4547.             }
  4548.             else
  4549.             if( strcmp(draw_type,"vlines") == 0 ){
  4550.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  4551.                 if(reply_format == 0){reply_format = 11;}
  4552.                 add_js_hlines(js_include_file,4,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  4553.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  4554.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4555.             }
  4556.             else
  4557.             if( strcmp(draw_type,"line") == 0 ){
  4558.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  4559.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  4560.                 if(reply_format == 0){reply_format = 11;}
  4561.                 add_js_lines(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  4562.                 if( use_input_xy == 1 ){
  4563.                     add_input_line(js_include_file,1);
  4564.                     add_input_x1y1x2y2(js_include_file,canvas_root_id,font_size,input_style);
  4565.                 }
  4566.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4567.             }
  4568.             else
  4569.             if( strcmp(draw_type,"lines") == 0 ){
  4570.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  4571.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  4572.                 if(reply_format == 0){reply_format = 11;}
  4573.                 add_js_lines(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  4574.                 if( use_input_xy == 1 ){
  4575.                     add_input_line(js_include_file,2);
  4576.                     add_input_x1y1x2y2(js_include_file,canvas_root_id,font_size,input_style);
  4577.                 }
  4578.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4579.             }
  4580.             else
  4581.             if( strcmp(draw_type,"demilines") == 0 || strcmp(draw_type,"halflines") == 0 ){
  4582.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  4583.                 if( js_function[DRAW_DEMILINES] != 1 ){ js_function[DRAW_DEMILINES] = 1;}
  4584.                 if(reply_format == 0){reply_format = 11;}
  4585.                 add_js_demilines(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  4586.                 if( use_input_xy == 1 ){
  4587.                     add_input_demiline(js_include_file,2);
  4588.                     add_input_x1y1x2y2(js_include_file,canvas_root_id,font_size,input_style);
  4589.                 }
  4590.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4591.             }
  4592.             else
  4593.             if( strcmp(draw_type,"demiline") == 0 || strcmp(draw_type,"halfline") == 0 ){
  4594.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  4595.                 if( js_function[DRAW_DEMILINES] != 1 ){ js_function[DRAW_DEMILINES] = 1;}
  4596.                 if(reply_format == 0){reply_format = 11;}
  4597.                 add_js_demilines(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  4598.                 if( use_input_xy == 1 ){
  4599.                     add_input_demiline(js_include_file,1);
  4600.                     add_input_x1y1x2y2(js_include_file,canvas_root_id,font_size,input_style);
  4601.                 }
  4602.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4603.             }
  4604.             else
  4605.             if( strcmp(draw_type,"rects") == 0 || strcmp(draw_type,"frects") == 0  || strcmp(draw_type,"filledrects") == 0 ){
  4606.                 if( js_function[DRAW_RECTS] != 1 ){ js_function[DRAW_RECTS] = 1;}
  4607.                 if(strstr(draw_type,"f") != NULL){if( use_pattern != 0 ){ use_filled = use_pattern;}else{use_filled =1;}}
  4608.                 if(reply_format == 0){reply_format = 2;}
  4609.                 add_js_rect(js_include_file,2,0,draw_type,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  4610.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  4611.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4612.             }
  4613.             else
  4614.             if( strcmp(draw_type,"roundrects") == 0 ||  strcmp(draw_type,"froundrects") == 0  ||  strcmp(draw_type,"filledroundrects") == 0){
  4615.                 if( js_function[DRAW_ROUNDRECTS] != 1 ){ js_function[DRAW_ROUNDRECTS] = 1;}
  4616.                 if( strstr(draw_type,"f") != NULL ){ if( use_pattern != 0 ){ use_filled = use_pattern;}else{use_filled =1;}}
  4617.                 if(reply_format == 0){reply_format = 2;}
  4618.                 add_js_rect(js_include_file,2,1,draw_type,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  4619.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  4620.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4621.             }
  4622.             else
  4623.             if( strcmp(draw_type,"rect") == 0 || strcmp(draw_type,"frect") == 0 || strcmp(draw_type,"filledrect") == 0 ){
  4624.                 if( js_function[DRAW_RECTS] != 1 ){ js_function[DRAW_RECTS] = 1;}
  4625.                 if( strstr(draw_type,"f") != NULL ){if( use_pattern != 0 ){ use_filled = use_pattern;}else{use_filled =1;}}
  4626.                 if(reply_format == 0){reply_format = 2;}
  4627.                 add_js_rect(js_include_file,1,0,draw_type,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  4628.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  4629.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4630.             }
  4631.             else
  4632.             if( strcmp(draw_type,"roundrect") == 0 || strcmp(draw_type,"froundrect") == 0  || strcmp(draw_type,"filledroundrect") == 0){
  4633.                 if( js_function[DRAW_ROUNDRECTS] != 1 ){ js_function[DRAW_ROUNDRECTS] = 1;}
  4634.                 if( strstr(draw_type,"f") != NULL ){if( use_pattern != 0 ){ use_filled = use_pattern;}else{use_filled = 1;}}
  4635.                 if(reply_format == 0){reply_format = 2;}
  4636.                 add_js_rect(js_include_file,1,1,draw_type,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  4637.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  4638.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4639.             }
  4640.             else
  4641.             if( strcmp(draw_type,"arcs") == 0 || strcmp(draw_type,"farcs") == 0  || strcmp(draw_type,"filledarcs") == 0 ){
  4642.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  4643.                 if( js_function[JS_FIND_ANGLE] != 1 ){ js_function[JS_FIND_ANGLE] = 1;}
  4644.                 if( strstr(draw_type,"f") != NULL ){use_filled =1;}
  4645.                 if(reply_format == 0){reply_format = 25;}
  4646.                 add_js_arc(js_include_file,canvas_root_id,2,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  4647.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  4648.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4649.             }
  4650.             else
  4651.             if( strcmp(draw_type,"arc") == 0 || strcmp(draw_type,"farc") == 0 || strcmp(draw_type,"filledarc") == 0){
  4652.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  4653.                 if( js_function[JS_FIND_ANGLE] != 1 ){ js_function[JS_FIND_ANGLE] = 1;}
  4654.                 if( strstr(draw_type,"f") != NULL ){use_filled =1;}
  4655.                 if(reply_format == 0){reply_format = 25;}
  4656.                 add_js_arc(js_include_file,canvas_root_id,1,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  4657.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  4658.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4659.             }
  4660.             else
  4661.             if( strcmp(draw_type,"text") == 0){
  4662.                 if(reply_format == 0){reply_format = 17;}
  4663.                 add_js_text(js_include_file,canvas_root_id,font_size,font_family,stroke_color,stroke_opacity);
  4664.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  4665.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4666.             }
  4667.             else
  4668.             if( strcmp(draw_type,"inputs") == 0){
  4669.                 if( js_function[DRAW_INPUTS] != 1 ){ js_function[DRAW_INPUTS] = 1;}
  4670.                 if(reply_format == 0){reply_format = 27;}
  4671.                 add_js_inputs(js_include_file,canvas_root_id,2,input_cnt,input_style,line_width,use_offset);
  4672.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  4673.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4674.             }
  4675.             else
  4676.             if( strcmp(draw_type,"input") == 0){
  4677.                 if( js_function[DRAW_INPUTS] != 1 ){ js_function[DRAW_INPUTS] = 1;}
  4678.                 if(reply_format == 0){reply_format = 27;}
  4679.                 add_js_inputs(js_include_file,canvas_root_id,1,input_cnt,input_style,line_width,use_offset);
  4680.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  4681.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  4682.             }
  4683.             else /* attention: THIS NEEDS TO BE LAST ! */
  4684.             if( strstr(draw_type,"fill") != NULL ){
  4685.                 decimals = find_number_of_digits(precision);
  4686.                 add_js_clickfill(js_include_file,canvas_root_id,stroke_color,(int) (fill_opacity/0.0039215));
  4687.                 if( reply_format == 0){reply_format = 22;}
  4688.                 if( js_function[DRAW_FILLTOBORDER] != 1 ){js_function[DRAW_FILLTOBORDER] = 1;add_js_filltoborder(js_include_file,canvas_root_id,canvas_type);}
  4689.                 if( strcmp(draw_type,"gridfill") == 0){js_function[DRAW_GRIDFILL] = 1;string_length = snprintf(NULL,0,"draw_gridfill(%d,%d,%d,4,4,%d,'%s','0.01',%d,%d,true);  ",FILL_CANVAS+fill_cnt,(int) (xmax),(int) (ymax),line_width,stroke_color,xsize,ysize);check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);snprintf(tmp_buffer,string_length,"draw_gridfill(%d,%d,%d,4,4,%d,'%s','0.01',%d,%d,true);",FILL_CANVAS+fill_cnt,(int) (xmax),(int) (ymax),line_width,stroke_color,xsize,ysize);add_to_buffer(tmp_buffer);fill_cnt++;}
  4690.                 if( strcmp(draw_type,"diamondfill") == 0){js_function[DRAW_DIAMONDFILL] = 1;string_length = snprintf(NULL,0,"draw_diamondfill(%d,%d,%d,4,4,%d,'%s','0.01',%d,%d,true);  ",FILL_CANVAS+fill_cnt,(int) (xmax),(int) (ymax),line_width,stroke_color,xsize,ysize);check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);snprintf(tmp_buffer,string_length,"draw_diamondfill(%d,%d,%d,4,4,%d,'%s','0.01',%d,%d,true);",FILL_CANVAS+fill_cnt,(int) (xmax),(int) (ymax),line_width,stroke_color,xsize,ysize);add_to_buffer(tmp_buffer);fill_cnt++;}
  4691.                 if( strcmp(draw_type,"dotfill") == 0){js_function[DRAW_DOTFILL] = 1;string_length = snprintf(NULL,0,"draw_dotfill(%d,%d,%d,4,4,%d,'%s','0.01',%d,%d,true);  ",FILL_CANVAS+fill_cnt,(int) (xmax),(int) (ymax),line_width,stroke_color,xsize,ysize);check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);snprintf(tmp_buffer,string_length,"draw_dotfill(%d,%d,%d,4,4,%d,'%s','0.01',%d,%d,true);",FILL_CANVAS+fill_cnt,(int) (xmax),(int) (ymax),line_width,stroke_color,xsize,ysize);add_to_buffer(tmp_buffer);fill_cnt++;}
  4692.                 if( strcmp(draw_type,"hatchfill") == 0){js_function[DRAW_HATCHFILL] = 1;string_length = snprintf(NULL,0,"draw_hatchfill(%d,%d,%d,4,4,%d,'%s','0.01',%d,%d,true);  ",FILL_CANVAS+fill_cnt,(int) (xmax),(int) (ymax),line_width,stroke_color,xsize,ysize);check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);snprintf(tmp_buffer,string_length,"draw_hatchfill(%d,%d,%d,4,4,%d,'%s','0.01',%d,%d,true);",FILL_CANVAS+fill_cnt,(int) (xmax),(int) (ymax),line_width,stroke_color,xsize,ysize);add_to_buffer(tmp_buffer);fill_cnt++;}
  4693.                 if( strcmp(draw_type,"textfill") == 0){js_function[DRAW_TEXTFILL] = 1;temp = get_string(infile,1);string_length = snprintf(NULL,0,"draw_textfill(%d,%d,%d,'%s','%s',%d,%d,'%s',true); ",FILL_CANVAS+fill_cnt,(int) (xmax),(int) (ymax),stroke_color,font_family,xsize,ysize,temp);check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);snprintf(tmp_buffer,string_length,"draw_textfill(%d,%d,%d,'%s','%s',%d,%d,'%s',true); ",FILL_CANVAS+fill_cnt,(int) (xmax),(int) (ymax),stroke_color,font_family,xsize,ysize,temp);add_to_buffer(tmp_buffer);fill_cnt++;}
  4694.             }
  4695.             else
  4696.             {
  4697.                 canvas_error("unknown drawtype or typo? ");
  4698.             }
  4699.             reset();
  4700.         break;
  4701.  
  4702.         case USERINPUT:
  4703.         /*
  4704.          @ userinput function | textarea | inputfield
  4705.          @ alternative : userinput_function
  4706.          @ alternative : userinput_textarea
  4707.          @ alternative : userinput_xy
  4708.          @ textarea and inputfield are only usable in combination with some 'userdraw draw_ type'
  4709.          @ function may be used any time (e.g. without userdraw)
  4710.          @ multiple 'userinput function' commands may be used.
  4711.          @ use command "functionlabel some_string" to define the inputfield text : default value "f(x)="
  4712.          @ use command 'strokecolor some_color' to adjust the plot / functionlabel color
  4713.          @ use command 'inputstyle some_css' to adjust the inputfields
  4714.          @ use command 'fontsize int' to adjust the label fonts. (default 12px)
  4715.          @ the user input for the function will be corrected by a simple 'rawmath' implementation...<br />an error message will be shown if javascript can not interpret the user input
  4716.          @%userinput%size 400,400%xrange -10,10%yrange -10,10%functionlabel some_label=%grid 1,1,grey%inputstyle color:blue;text-align:center%userinput function
  4717.          @%userinput%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%userinput inputfield%userdraw points,blue
  4718.          @%userinput%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%userinput textarea%userdraw points,blue
  4719.         */
  4720.             temp = get_string_argument(infile,1);
  4721.             if(strstr(temp,"function") != 0  || strstr(temp,"curve") != 0  || strstr(temp,"plot") != 0 ){
  4722.              if( js_function[DRAW_JSFUNCTION] != 1 ){
  4723.               add_rawmath(js_include_file);/* add simple rawmath routine to correct user input of function */
  4724.               js_function[DRAW_JSFUNCTION] = 1;
  4725.               if(reply_format == 0){reply_format = 24;}/* read canvas_input values */
  4726.               add_input_jsfunction(js_include_file,canvas_root_id,input_style,function_label,input_cnt,stroke_color,stroke_opacity,line_width,use_dashed,dashtype[0],dashtype[1],font_size);
  4727.               input_cnt++;
  4728.              }
  4729.              else
  4730.              {
  4731.               /* no need to add DRAW_JSFUNCTION , just call it with the parameters */
  4732.               fprintf(js_include_file,"add_input_jsfunction(%d,\"%s\",\"%s\",%d,\"%s\",\"%.2f\",%d,%d,%d,%d);\n",input_cnt,input_style,function_label,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],font_size);
  4733.               input_cnt++;
  4734.              }
  4735.              if( use_js_math == FALSE){/* add this stuff only once...*/
  4736.               add_to_js_math(js_include_file);
  4737.               use_js_math = TRUE;
  4738.              }
  4739.              if( use_js_plot == FALSE){
  4740.               use_js_plot = TRUE;
  4741.               add_jsplot(js_include_file,canvas_root_id); /* this plots the function on JSPLOT_CANVAS */
  4742.              }
  4743.             }
  4744.             else
  4745.             {
  4746.              if(strstr(temp,"inputfield") != 0 ){
  4747.               if( use_input_xy != 0 ){canvas_error("userinput_xy can not be combined with usertextarea_xy command");}
  4748.               if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  4749.               use_input_xy = 1;
  4750.              }
  4751.              else
  4752.              {
  4753.               if(strstr(temp,"textarea") != 0 ){
  4754.                if( use_input_xy != 0 ){canvas_error("usertextarea_xy can not be combined with userinput_xy command");}
  4755.                if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  4756.                use_input_xy = 2;
  4757.               }
  4758.               else
  4759.               {
  4760.                 canvas_error("userinput argument may be \"function,inputfield,textarea\"");
  4761.               }
  4762.              }
  4763.             }
  4764.             break;
  4765.         case USERINPUT_XY:
  4766.         /*
  4767.         @ userinput_xy
  4768.         @ keyword (no arguments required)
  4769.         @ to be used in combination with command "userdraw object_type,color"
  4770.         @ if set two (or three) input fields are added to the document<br />(one for x-values , one for y-values and in case of drawing circle one for radius-values)
  4771.         @ the student may use this as correction for (x:y) on a drawing (or to draw without mouse, using just the coordinates)
  4772.         @ math input is allowed (e.g something like: 1+3,2*6,1/3,sqrt(3), sin(pi/4),10^-2,log(2)...)<br />eval function is 'protected' against code injection.
  4773.         @ can <b>not</b> be combined with command "intooltip tiptext" <br />note: the 'tooltip div element' is used for placing inputfields
  4774.         @ user drawings will not zoom on zooming (or pan on panning)
  4775.         @ use command 'inputstyle some_css' to adjust the inputarea.
  4776.         @ use command 'fontsize int' to adjust the text labels (if needed)
  4777.         */
  4778.             /* add simple eval check to avoid code injection with unprotected eval(string) */
  4779.             if( use_input_xy != 0 ){canvas_error("userinput_xy can not be combined with usertextarea_xy command");}
  4780.             if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  4781.             use_input_xy = 1;
  4782.             break;
  4783.  
  4784.         case USERINPUT_FUNCTION:
  4785.         /*
  4786.         @ userinput_function
  4787.         @ keyword (no arguments required)
  4788.         @ if set , a inputfield will be added to the page
  4789.         @ repeat keyword for more function input fields
  4790.         @ the userinput value will be plotted in the canvas
  4791.         @ this value may be read with 'read_canvas()'. <br />for do it yourself js-scripters : If this is the first inputfield in the script, its id is canvas_input0
  4792.         @ use before this command 'userinput_function',<br />commands like 'inputstyle some_css' , 'xlabel some_description' , 'opacity int,int' , 'linewidth int' , 'dashed' and 'dashtype int,int' to modify
  4793.         @ fontsize can be set using command 'fontsize int'
  4794.         @ incompatible with command 'intooltip link_text_or_image' : it uses the tooltip div for adding the inputfield
  4795.         */
  4796.             if( js_function[DRAW_JSFUNCTION] != 1 ){
  4797.              js_function[DRAW_JSFUNCTION] = 1;
  4798.              add_rawmath(js_include_file);
  4799.              if(reply_format == 0){reply_format = 24;}/* read canvas_input values */
  4800.              add_input_jsfunction(js_include_file,canvas_root_id,input_style,function_label,input_cnt,stroke_color,stroke_opacity,line_width,use_dashed,dashtype[0],dashtype[1],font_size);
  4801.              input_cnt++;
  4802.             }
  4803.             else
  4804.             {
  4805.               /* no need to add DRAW_JSFUNCTION , just call it with the parameters */
  4806.              fprintf(js_include_file,"add_input_jsfunction(%d,\"%s\",\"%s\",%d,\"%s\",\"%.2f\",%d,%d,%d,%d);\n",input_cnt,input_style,function_label,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],font_size);
  4807.              input_cnt++;
  4808.             }
  4809.             if( use_js_math == FALSE){/* add this stuff only once...*/
  4810.              add_to_js_math(js_include_file);
  4811.              use_js_math = TRUE;
  4812.             }
  4813.             if( use_js_plot == FALSE){
  4814.              use_js_plot = TRUE;
  4815.              add_jsplot(js_include_file,canvas_root_id); /* this plots the function on JSPLOT_CANVAS */
  4816.             }
  4817.             break;
  4818.  
  4819.  
  4820.  
  4821.         case USERTEXTAREA_XY:
  4822.         /*
  4823.         @ usertextarea_xy
  4824.         @ keyword (no arguments required)
  4825.         @ to be used in combination with command "userdraw object_type,color" wherein object_type is only segment / polyline for the time being...
  4826.         @ if set two textareas are added to the document<br />(one for x-values , one for y-values)
  4827.         @ the student may use this as correction for (x:y) on a drawing (or to draw without mouse, using just the coordinates)
  4828.         @ user drawings will not zoom on zooming (or pan on panning)
  4829.         @ use command 'inputstyle some_css' to adjust the inputarea.
  4830.         @ use command 'fontsize int' to adjust the text labels (if needed)
  4831.         */
  4832.             if( use_input_xy != 0 ){canvas_error("usertextarea_xy can not be combined with userinput_xy command");}
  4833.             if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  4834.             use_input_xy = 2;
  4835.             break;
  4836.  
  4837.         case VLINE:
  4838.         /*
  4839.         @ vline x,y,color
  4840.         @ alternative : verticalline
  4841.         @ draw a vertical line through point (x:y) in color 'color'
  4842.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
  4843.         @%vline%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%onclick%vline 0,0,red%onclick%vline 1,0,orange%onclick%vline 2,0,blue%onclick%vline 3,0,green
  4844.         */
  4845.             for(i=0;i<3;i++) {
  4846.                 switch(i){
  4847.                     case 0: double_data[0] = get_real(infile,0);break; /* x-values */
  4848.                     case 1: double_data[1] = get_real(infile,0);break; /* y-values */
  4849.                     case 2: stroke_color=get_color(infile,1);/* name or hex color */
  4850.                         double_data[2] = double_data[0];
  4851.                         decimals = find_number_of_digits(precision);
  4852.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,4,[%.*f,%.*f],[%.*f,%.*f],[30],[30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[2],decimals,100*ymin,decimals,100*ymax,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  4853.                         if(onclick > 0){click_cnt++;}
  4854.                         /* click_cnt++; */
  4855.                         reset();
  4856.                     break;
  4857.                 }
  4858.             }
  4859.             break;
  4860.  
  4861.         case VLINES:
  4862.         /*
  4863.         @ vlines color,x1,y1,x2,y2....
  4864.         @ alternative : verticallines
  4865.         @ draw vertical lines through points (x1:y1),(x2:y2)... in color 'color'
  4866.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> individually
  4867.         @%vline%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%onclick%vlines red,1,0,2,0,3,0,4,0
  4868.         */
  4869.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  4870.             fill_color = stroke_color;
  4871.             i=0;
  4872.             while( ! done ){     /* get next item until EOL*/
  4873.                 if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
  4874.                 if(i%2 == 0 ){
  4875.                     double_data[i] = get_real(infile,0); /* x */
  4876.                 }
  4877.                 else
  4878.                 {
  4879.                     double_data[i] = get_real(infile,1); /* y */
  4880.                 }
  4881.                 i++;
  4882.             }
  4883.             decimals = find_number_of_digits(precision);
  4884.             for(c = 0 ; c < i-1 ; c = c+2){
  4885.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,4,[%.*f,%.*f],[%.*f,%.*f],[30],[30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[c],decimals,double_data[c],decimals,ymin,decimals,ymax,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  4886.                 if(onclick > 0){click_cnt++;}
  4887.                 /* click_cnt++; */
  4888.             }
  4889.             reset();
  4890.             break;
  4891.  
  4892.         case VIDEO:
  4893.         /*
  4894.         @ video x,y,w,h,videofile location
  4895.         @ x,y : left top corner of audio element (in xrange / yrange)
  4896.         @ w,y : width and height in pixels
  4897.         @ video format may be in *.mp4 (todo:other formats)
  4898.         @%video%size 400,400%xrange -10,10%yrange -10,10%video 0,0,120,120,myvideo.mp4
  4899.         */
  4900.             if( js_function[DRAW_VIDEO] != 1 ){ js_function[DRAW_VIDEO] = 1;}
  4901.             for(i=0;i<5;i++){
  4902.                 switch(i){
  4903.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x in x/y-range coord system -> pixel */
  4904.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y in x/y-range coord system  -> pixel */
  4905.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* pixel width */
  4906.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* height pixel height */
  4907.                     case 4: temp = get_string(infile,1);
  4908.                             string_length = snprintf(NULL,0,  "draw_video(%d,%d,%d,%d,%d,\"%s\");\n",canvas_root_id,int_data[0],int_data[1],int_data[2],int_data[3],temp);
  4909.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  4910.                             snprintf(tmp_buffer,string_length,"draw_video(%d,%d,%d,%d,%d,\"%s\");\n",canvas_root_id,int_data[0],int_data[1],int_data[2],int_data[3],temp);
  4911.                             add_to_buffer(tmp_buffer);
  4912.                             break;
  4913.                     default:break;
  4914.                 }
  4915.             }
  4916.             reset();
  4917.             break;
  4918.  
  4919.         case X_AXIS_STRINGS:
  4920.         /*
  4921.          @ xaxis num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  4922.          @ alternative : xaxistext num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  4923.          @ usable for commands <a href="numberline">numberline</a> and <a href="grid">grid</a> or combinations thereof
  4924.          @ use these x-axis num1...num_n values instead of default xmin...xmax
  4925.          @ in case of command 'grid' . there is no need to use keyword <a href="#axisnumbering">axisnumbering</a>
  4926.          @ use command <a href="#axis">axis</a> to have visual x/y-axis lines (see command <a href="grid">grid</a>
  4927.          @ use command "fontcolor", "fontfamily" to adjust font <br />defaults: black,12,Ariel<br />note: command "fontsize" is not active for this command.("fontsize" can be used for the <a href="#legend">"legend"</a> in a <a href="#grid">grid</a>)
  4928.          @ a javascript error message will flag non-matching value:name pairs
  4929.          @ if the 'x-axis words' are too big and will overlap, a simple alternating offset will be applied
  4930.          @ to be used before command grid (see <a href="#grid">command grid</a>)
  4931.          @%xaxistext%size 400,400%xrange -10,10%yrange -10,10%xrange 0,13%yrange -100,500%axis%xaxis 1:january:2:february:3:march:5:may:6:june:7:july:8:august:9:september:10:october:11:november:12:december%#'xmajor' steps should be synchronised with numbers eg. "1" in this example%grid 1,100,grey,1,4,6,grey
  4932.         */
  4933.             use_axis_numbering++;
  4934.             temp = get_string(infile,1);
  4935.             if( strstr(temp,":") != 0 ){ temp = str_replace(temp,":","\",\"");}
  4936.             if( strstr(temp,"pi") != 0 ){ temp = str_replace(temp,"pi","(3.1415927)");}/* we need to replace pi for javascript y-value*/
  4937.             fprintf(js_include_file,"x_strings[%d] = [\"%s\"];x_strings_up[%d] = null;",use_axis_numbering,temp,use_axis_numbering);
  4938.             break;
  4939.         case X_AXIS_STRINGS_UP:
  4940.         /*
  4941.          @ xaxisup num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  4942.          @ alternative : xaxistextup num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  4943.          @ the text will be rotated 90&deg; up
  4944.          @ no need to use keyword <a href="#axisnumbering">axisnumbering</a>
  4945.          @ use command <a href="#axis">axis</a> to have visual x/y-axis lines (see command <a href="grid">grid</a>
  4946.          @ use these x-axis num1...num_n values instead of default xmin...xmax
  4947.          @ use command "fontcolor","fontfamily" to adjust font <br />defaults: black,12,Ariel<br />note: command "fontsize" is not active for this command.("fontsize" can be used for the <a href="#legend">"legend"</a> in a <a href="#grid">grid</a>)
  4948.          @ a javascript error message will flag non-matching value:name pairs
  4949.          @ if the 'x-axis words' are too big, they will overlap the graph<br /> (in this case the text will start from ysize upwards)
  4950.          @ to be used before command grid (see <a href="#grid">command grid</a>)
  4951.          @ type7%:xaxisuptext%xrange 0,13%yrange -100,500%axis%xaxisup 1:january:2:february:3:march:5:may:6:june:7:july:8:august:9:september:10:october:11:november:12:december%#'xmajor' steps should be synchronised with numbers eg. "1" in this example%grid 1,100,grey,1,4,6,grey
  4952.         */
  4953.             use_axis_numbering++;
  4954.             temp = get_string(infile,1);
  4955.             if( strstr(temp,":") != 0 ){ temp = str_replace(temp,":","\",\"");}
  4956.             if( strstr(temp,"pi") != 0 ){ temp = str_replace(temp,"pi","(3.1415927)");}/* we need to replace pi for javascript y-value*/
  4957.             fprintf(js_include_file,"x_strings_up[%d] = 1;x_strings[%d] = [\"%s\"];",use_axis_numbering,use_axis_numbering,temp);
  4958.             break;
  4959.  
  4960.         case XERRORBARS:
  4961.         /*
  4962.         @ xerrorbars color,E1,E2,x1,y1,x2,y2,...,x_n,y_n
  4963.         @ draw multiple points with x-errorbars E1 (error value left from point) and E2 (error value right from point) at given coordinates in color 'color'
  4964.         @ the errors E1 and E2 values are in xrange.
  4965.         @ use command 'linewidth int' to adust size
  4966.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> individually (!)
  4967.         @%xerrorbars%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%drag xy%xerrorbars red,0.8,1.3,0,0,1,1,2,3,3,2,4,5,5,2,6,1,-1,-2,-2,0,-3,2,-4,4,-5,-1
  4968.  
  4969.         */
  4970.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  4971.             fill_color = stroke_color;
  4972.             i=0;
  4973.             while( ! done ){     /* get next item until EOL*/
  4974.                 if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
  4975.                 if(i%2 == 0 ){
  4976.                     double_data[i] = get_real(infile,0); /* x */
  4977.                 }
  4978.                 else
  4979.                 {
  4980.                     double_data[i] = get_real(infile,1); /* y */
  4981.                 }
  4982.                 i++;
  4983.             }
  4984.             decimals = find_number_of_digits(precision);
  4985.             for(c = 2 ; c < i-1 ; c = c+2){
  4986.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,20,[%.*f],[%.*f],[%.2f],[%.2f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[c],decimals,double_data[c+1],double_data[0],double_data[1],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,1,0,0,0,use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  4987.                 /* click_cnt++; */
  4988.                 if(onclick > 0){click_cnt++;}
  4989.             }
  4990.             reset();
  4991.             break;
  4992.  
  4993.         case XRANGE:
  4994.         /*
  4995.         @ xrange xmin,xmax
  4996.         @ alternative : rangex
  4997.         @ if not given: 0,xsize (eg in pixels)
  4998.         */
  4999.             for(i = 0 ; i<2; i++){
  5000.                 switch(i){
  5001.                     case 0: xmin = get_real(infile,0);break;
  5002.                     case 1: xmax = get_real(infile,1);break;
  5003.                     default: break;
  5004.                 }
  5005.             }
  5006.             if(xmin >= xmax){canvas_error(" xrange is not OK : xmin &lt; xmax !\n");}
  5007.             fprintf(js_include_file,"var xmin = %f;var xmax = %f;\n",xmin,xmax);
  5008.             found_size_command++;
  5009.             break;
  5010.  
  5011.  
  5012.  
  5013.         case XSNAPTOGRID:
  5014.         /*
  5015.          @ xsnaptogrid
  5016.          @ keyword (no arguments required)
  5017.          @ a draggable object (use command "drag  x|y|xy") will snap to the given x-grid values when dragged (mouseup)
  5018.          @ in case of userdraw the drawn points will snap to xmajor grid
  5019.          @ if no grid is defined ,points will snap to every integer xrange value. (eg snap_x=1)
  5020.          @ if you do not want a visible grid, but you only want a 'snaptogrid' with some value...define this grid with opacity 0.
  5021.          @ if xminor is defined (use keyword 'axis' to activate xminor), the drawing will snap to xminor <br />use only even dividers in x-minor...for example<br />xsnaptogrid<br />axis<br />grid 2,1,grey,4,4,7,red<br /> will snap on x=0, x=0.5, x=1, x=1.5 ....<br /> will snap on y=0, y=0.25 y=0.5 y=0.75 ...<br />
  5022.          @%xsnaptogrid%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%xsnaptogrid%userdraw segments,red%precision 1%display x,red,12
  5023.          @%xsnaptogrid%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 3%drag x%points red,0,0,0,0,0,0,0,0,0,0
  5024.  
  5025.         */
  5026.         fprintf(js_include_file,"\nx_use_snap_to_grid = 1;y_use_snap_to_grid = 0;");
  5027.         break;
  5028.  
  5029.         case XOFFSET:
  5030.         /*
  5031.          @ xoffset
  5032.          @ keyword ; to place the text centered above the text coordinates(x:y) ...
  5033.          @ may be used for points or other things requiring centered labels
  5034.          @ use <a href="#fontfamily">fontfamily</a> for setting the font
  5035.          @ may be active for commands <a href="#text">text</a> and <a href="#string">string</a> (e.g. objects in the drag/drop/onclick-library)
  5036.         @%xoffset%size 400,400%xrange -10,10%yrange -10,10%fontfamily 12pt Ariel%string blue,-9,-9,no offset%point -9,-9,red%centered%string blue,-6,-6,centered%point -6,-6,red%xoffset%string blue,-3,-3,xoffset%point -3,-3,red%yoffset%string blue,0,0,yoffset%point 0,0,red%xyoffset%string blue,3,3,xyoffset%point 3,3,red%resetoffset%string blue,6,6,resetoffset%point 6,6,red
  5037.         */
  5038.          use_offset = 2;
  5039.          break;
  5040.  
  5041.         case XYOFFSET:
  5042.         /*
  5043.          @ xyoffset
  5044.          @ keyword ; to place the text (x:y) to (x+dx:y+dy)... dx/dy are dependent on fontsize/fontfamily
  5045.          @ may be used for points or other things requiring labels
  5046.          @ use <a href="#fontfamily">fontfamily</a> for setting the font
  5047.          @ only active for commands <a href="#text">text</a> and <a href="#string">string</a> (e.g. objects in the drag/drop/onclick-librariy
  5048.          @ in case of inputfields the inputfield will be centered x and y on it's coordinates.<br />for example:<br />inputs 1,1,10,? <br />point 1,1,red <br /> the point will be completely invisible<br />note: keyword 'xyoffset' will also provide centering if used with <a href='#@userdraw'>input(s),color</a>  
  5049.          @%xyoffset%size 400,400%xrange -10,10%yrange -10,10%fontfamily 12pt Ariel%string blue,-9,-9,no offset%point -9,-9,red%centered%string blue,-6,-6,centered%point -6,-6,red%xoffset%string blue,-3,-3,xoffset%point -3,-3,red%yoffset%string blue,0,0,yoffset%point 0,0,red%xyoffset%string blue,3,3,xyoffset%point 3,3,red%resetoffset%string blue,6,6,resetoffset%point 6,6,red
  5050.         */
  5051.          use_offset = 3;
  5052.          break;
  5053.  
  5054.         case XUNIT:
  5055.         /*
  5056.          @ xunit some_unit_for_x-values
  5057.          @ unicode allowed (no html code)
  5058.          @ use together with command <a href='#display'>display or mouse</a>
  5059.          @ will display the cursor x-coordinate in 'unit'
  5060.          @%xunit%size 400,400%xrange -10,10%yrange -10,10%xunit cm \\u00B2%grid 2,2,grey%linewidth 2%userdraw segments,blue%display x,blue,18
  5061.         */
  5062.             fprintf(js_include_file,"unit_x = \"%s\";",get_string(infile,1));
  5063.             break;
  5064.  
  5065.         case XLABEL:
  5066.         /*
  5067.         @ xlabel some_string
  5068.         @ will be used to create a label for the x-axis (label is in quadrant I)
  5069.         @ can only be used together with command 'grid'</a><br />not depending on keywords 'axis' and 'axisnumbering'
  5070.         @ font setting: italic Courier, fontsize will be slightly larger (fontsize + 4)<br />use command "fontsize" to adjust.<br />(command "fontfamily" is not active for this command)
  5071.         @ see <a href='#ylabel'>ylabel</a>
  5072.         @%xlabel%size 400,400%xrange -10,10%yrange -10,10%axis%axisnumbering%xlabel cm\u00B2 %ylabel v\u00B2 %precision 1%grid 2,2,grey,2,2,5,grey
  5073.         */
  5074.             temp = get_string(infile,1);
  5075.             fprintf(js_include_file,"var xaxislabel = \"%s\";",temp);
  5076.             break;
  5077.  
  5078.         case XLOGBASE:
  5079.         /*
  5080.         @ xlogbase number
  5081.         @ sets the logbase number for the x-axis
  5082.         @ default value 10
  5083.         @ use together with commands xlogscale / xylogscale
  5084.         */
  5085.             fprintf(js_include_file,"xlogbase=%d;",(int)(get_real(infile,1)));
  5086.             break;
  5087.  
  5088.         case XLOGSCALE:
  5089.         /*
  5090.          @ xlogscale ymajor,yminor,majorcolor,minorcolor
  5091.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  5092.          @ ymajor is the major step on the y-axis; yminor is the divisor for the y-step
  5093.          @ the linewidth is set using command 'linewidth int'
  5094.          @ the opacity of major / minor grid lines is set by command <a href='#opacity'>'opacity</a>'
  5095.          @ default logbase number = 10 ... when needed , set the logbase number with command 'xlogbase number'
  5096.          @ the x/y- axis numbering is triggered by keyword 'axisnumbering'<ul><li>use command 'precision' before 'xlogscale' command to set the precision (decimals) of the axis numbering</li><li>use commands 'xlabel some_text' and/or 'ylabel some_text' for text on axis : use command 'fontsize int' to set the fontsize (default 12px)</li><li>use command 'fontfamily fnt_family_string' to set the fonts for axis-numbering</li><li>use command'fontcolor' to set the colour</li></ul>
  5097.          @ note: the complete canvas will be used for the 'log paper'
  5098.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  5099.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  5100.          @ note: when using something like 'xrange 0.0001,0.01'...combined with commands <a href='#mouse'>'mouse'</a> and/or <a href='#userdraw'>'userdraw</a>...<br /> make sure the <a href='#precision'>precision</a> is set accordingly
  5101.          @ note: in case of userdraw , the use of keyword <a href='#userinput_xy'>'userinput_xy'</a> may be handy !
  5102.          @ <b>attention</b>: keyword 'snaptogrid' may not lead to the desired result...
  5103.          @%xlogscale%size 400,400%xrange 10,50000%yrange -5,5%xlabel x-axis%ylabel y-axis%xlogscale 10,1,black,grey%display x,red,22
  5104.         */
  5105.             use_axis_numbering++;if(use_axis_numbering > 1){use_axis_numbering = 1;}
  5106.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  5107.             if( js_function[DRAW_XLOGSCALE] != 1 ){ js_function[DRAW_XLOGSCALE] = 1;}
  5108.             for(i=0;i<4;i++){
  5109.                 switch(i){
  5110.                     case 0: double_data[0] = get_real(infile,0);break; /* xmajor */
  5111.                     case 1: int_data[0] = (int) (get_real(infile,0));break; /* xminor */
  5112.                     case 2: stroke_color = get_color(infile,0); break;
  5113.                     case 3: fill_color = get_color(infile,1);
  5114.                         string_length = snprintf(NULL,0,"draw_grid%d(%d,%d,\"%s\",\"%s\",%.2f,%.2f,%d,\"%s\",\"%s\",%d,%f,%d,%d); ",canvas_root_id,GRID_CANVAS,line_width,stroke_color,fill_color,stroke_opacity,fill_opacity,font_size,font_family,font_color,use_axis_numbering,double_data[0],int_data[0],precision);
  5115.                         tmp_buffer = my_newmem(string_length+1);
  5116.                         snprintf(tmp_buffer,string_length,"draw_grid%d(%d,%d,\"%s\",\"%s\",%.2f,%.2f,%d,\"%s\",\"%s\",%d,%f,%d,%d); ",canvas_root_id,GRID_CANVAS,line_width,stroke_color,fill_color,stroke_opacity,fill_opacity,font_size,font_family,font_color,use_axis_numbering,double_data[0],int_data[0],precision);
  5117.                         fprintf(js_include_file,"use_xlogscale=1;snap_y = %f;snap_x = xlogbase;",double_data[0]/int_data[0]);
  5118.                         add_to_buffer(tmp_buffer);
  5119.                         break;
  5120.                     default:break;
  5121.                 }
  5122.             }
  5123.             break;
  5124.  
  5125.         case XYLOGSCALE:
  5126.         /*
  5127.          @ xylogscale majorcolor,minorcolor
  5128.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  5129.          @ the linewidth is set using command 'linewidth int'
  5130.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  5131.          @ default logbase number = 10 ... when needed , set the logbase number with command 'xlogbase number' and/or 'ylogbase number'
  5132.          @ the x/y- axis numbering is triggered by keyword 'axisnumbering'<ul><li>use commands 'xlabel some_text' and/or 'ylabel some_text' for text on axis : use command 'fontsize int' to set the fontsize (default 12px)</li><li>use command 'fontfamily fnt_family_string' to set the fonts for axis-numbering</li><li>use command'fontcolor' to set the colour</li></ul>
  5133.          @ note: the complete canvas will be used for the 'log paper'
  5134.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  5135.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  5136.          @ note: when using something like 'yrange 0.0001,0.01'...combined with commands 'mouse color,fontsize' and/or 'userdraw type,color'...<br /> make sure the precision is set accordingly (eg command 'precision 10000')
  5137.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  5138.          @ <b>attention</b>: keyword 'snaptogrid' may not lead to the desired result...
  5139.          @%xylogscale%size 400,400%xrange 10,50000%yrange 10,50000%xlabel x-axis%ylabel y-axis%xyogscale black,grey%display xy,red,22
  5140.         */
  5141.             use_axis_numbering++;if(use_axis_numbering > 1){use_axis_numbering = 1;}
  5142.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  5143.             if( js_function[DRAW_XYLOGSCALE] != 1 ){ js_function[DRAW_XYLOGSCALE] = 1;}
  5144.             for(i=0;i<2;i++){
  5145.                 switch(i){
  5146.                     case 0: stroke_color = get_color(infile,0); break;
  5147.                     case 1: fill_color = get_color(infile,1);
  5148.                         string_length = snprintf(NULL,0,"draw_grid%d(%d,%d,\"%s\",\"%s\",%.2f,%.2f,%d,\"%s\",\"%s\",%d,%d); ",canvas_root_id,GRID_CANVAS,line_width,stroke_color,fill_color,stroke_opacity,fill_opacity,font_size,font_family,font_color,use_axis_numbering,precision);
  5149.                         tmp_buffer = my_newmem(string_length+1);
  5150.                         snprintf(tmp_buffer,string_length,"draw_grid%d(%d,%d,\"%s\",\"%s\",%.2f,%.2f,%d,\"%s\",\"%s\",%d,%d); ",canvas_root_id,GRID_CANVAS,line_width,stroke_color,fill_color,stroke_opacity,fill_opacity,font_size,font_family,font_color,use_axis_numbering,precision);
  5151.                         fprintf(js_include_file,"use_xlogscale=1;use_ylogscale=1;snap_x = xlogbase;snap_y = ylogbase;");
  5152.                         add_to_buffer(tmp_buffer);
  5153.                         break;
  5154.                     default:break;
  5155.                 }
  5156.             }
  5157.         break;
  5158.  
  5159.  
  5160.         case Y_AXIS_STRINGS:
  5161.         /*
  5162.          @ yaxis num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  5163.          @ alternativ : yaxistext num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  5164.          @ use command "fontcolor", "fontfamily" to adjust font <br />defaults: black,12,Ariel<br /> note: command "fontsize" is not active for this command.("fontsize" can be used for the <a href="#legend">"legend"</a> in a <a href="#grid">grid</a>)
  5165.          @ no need to use keyword <a href="#axisnumbering">axisnumbering</a>
  5166.          @ use command <a href="#axis">axis</a> to have visual x/y-axis lines (see command <a href="grid">grid</a>
  5167.          @ use these y-axis num1...num_n  values instead of default ymin...ymax
  5168.          @ a javascript error message will flag non-matching value:name pairs
  5169.          @ to be used before command grid (see <a href="#grid">command grid</a>)
  5170.          @%yaxistext%size 400,400%yrange 0,13%xrange -100,500%axis%yaxis 1:january:2:february:3:march:5:may:6:june:7:july:8:august:9:september:10:october:11:november:12:december%#'ymajor' steps should be synchronised with numbers eg. "1" in this example%grid 100,1,grey,4,1,6,grey
  5171.         */
  5172.             temp = get_string(infile,1);
  5173.             if( strstr(temp,":") != 0 ){ temp = str_replace(temp,":","\",\"");}
  5174.             if( strstr(temp,"pi") != 0 ){ temp = str_replace(temp,"pi","(3.1415927)");}/* we need to replace pi for javascript y-value*/
  5175.             fprintf(js_include_file,"y_strings = [\"%s\"];\n ",temp);
  5176.             use_axis_numbering++;
  5177.             break;
  5178.  
  5179.  
  5180.         case YERRORBARS:
  5181.         /*
  5182.         @ yerrorbars color,E1,E2,x1,y1,x2,y2,...,x_n,y_n
  5183.         @ draw multiple points with y-errorbars E1 (error value under point) and E2 (error value above point) at given coordinates in color 'color'
  5184.         @ the errors E1 and E2 values are in yrange.
  5185.         @ use command 'linewidth int' to adust size
  5186.         @ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> individually (!)
  5187.         @%yerrorbars%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%onclick%yerrorbars red,0.8,1.3,0,0,1,1,2,3,3,2,4,5,5,2,6,1,-1,-2,-2,0,-3,2,-4,4,-5,-1
  5188.         */
  5189.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  5190.             fill_color = stroke_color;
  5191.             i=0;
  5192.             while( ! done ){     /* get next item until EOL*/
  5193.                 if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
  5194.                 if(i%2 == 0 ){
  5195.                     double_data[i] = get_real(infile,0); /* x */
  5196.                 }
  5197.                 else
  5198.                 {
  5199.                     double_data[i] = get_real(infile,1); /* y */
  5200.                 }
  5201.                 i++;
  5202.             }
  5203.             for(c = 2 ; c < i-1 ; c = c+2){
  5204.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,19,[%.*f],[%.*f],[%.2f],[%.2f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[c],decimals,double_data[c+1],double_data[0],double_data[1],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,1,0,0,0,use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt,rotation_center,use_offset,use_pattern);
  5205.                 /* click_cnt++; */
  5206.                 if(onclick > 0){click_cnt++;}
  5207.             }
  5208.             decimals = find_number_of_digits(precision);
  5209.             reset();
  5210.             break;
  5211.         case YOFFSET:
  5212.         /*
  5213.          @ yoffset
  5214.          @ keyword ; to place the text centered above the text coordinates(x:y) ...
  5215.          @ may be used for points or other things requiring centered labels
  5216.          @ use <a href="#fontfamily">fontfamily</a> for setting the font
  5217.          @ may be active for commands <a href="#text">text</a> and <a href="#string">string</a> (e.g. objects in the drag/drop/onclick-library)
  5218.          @%yoffset%size 400,400%xrange -10,10%yrange -10,10%fontfamily 12pt Ariel%string blue,-9,-9,no offset%point -9,-9,red%centered%string blue,-6,-6,centered%point -6,-6,red%xoffset%string blue,-3,-3,xoffset%point -3,-3,red%yoffset%string blue,0,0,yoffset%point 0,0,red%xyoffset%string blue,3,3,xyoffset%point 3,3,red%resetoffset%string blue,6,6,resetoffset%point 6,6,red
  5219.         */
  5220.          use_offset = 1;
  5221.          break;
  5222.  
  5223.         case YRANGE:
  5224.         /*
  5225.         @ yrange ymin,ymax
  5226.         @ alternative : rangey
  5227.         @ if not given 0,ysize (eg in pixels)
  5228.         */
  5229.             for(i = 0 ; i<2; i++){
  5230.                 switch(i){
  5231.                     case 0: ymin = get_real(infile,0);break;
  5232.                     case 1: ymax = get_real(infile,1);break;
  5233.                     default: break;
  5234.                 }
  5235.             }
  5236.             if(ymin >= ymax){canvas_error(" yrange is not OK : ymin &lt; ymax !\n");}
  5237.             fprintf(js_include_file,"var ymin = %f;var ymax = %f;\n",ymin,ymax);
  5238.             found_size_command++;
  5239.             break;
  5240.  
  5241.         case YSNAPTOGRID:
  5242.         /*
  5243.          @ ysnaptogrid
  5244.          @ keyword (no arguments required)
  5245.          @ a draggable object (use command "drag  x|y|xy") will snap to the given y-grid values when dragged (mouseup)
  5246.          @ in case of userdraw the drawn points will snap to ymajor grid
  5247.          @ if no grid is defined ,points will snap to every integer yrange value. (eg snap_y=1)
  5248.          @ if you do not want a visible grid, but you only want a 'snaptogrid' with some value...define this grid with opacity 0.
  5249.          @ if yminor is defined (use keyword 'axis' to activate yminor), the drawing will snap to yminor <br />use only even dividers in y-minor...for example<br />ysnaptogrid<br />axis<br />grid 2,1,grey,4,4,7,red<br /> will snap on x=0, x=0.5, x=1, x=1.5 ....<br /> will snap on y=0, y=0.25 y=0.5 y=0.75 ...<br />
  5250.          @%ysnaptogrid%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%userdraw crosshairs,blue%inputstyle font-size:8px;color:blue%clearbutton delete all crosshairs
  5251.          @%ysnaptogrid%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 3%drag y%points red,0,0,0,0,0,0,0,0,0,0
  5252.         */
  5253.         fprintf(js_include_file,"\nx_use_snap_to_grid = 0;y_use_snap_to_grid = 1;");
  5254.         break;
  5255.  
  5256.         case YLABEL:
  5257.         /*
  5258.         @ ylabel some_string
  5259.         @ will be used to create a (vertical) label for the y-axis (label is in quadrant I)
  5260.         @ can only be used together with command <a href="#grid">'grid'</a><br />not depending on keywords 'axis' and 'axisnumbering'
  5261.         @ font setting: italic Courier, fontsize will be slightly larger (fontsize + 4)<br />use command "fontsize" to adjust.<br />(command "fontfamily" is not active for this command)
  5262.         @%ylabel%size 400,400%xrange -10,10%yrange -10,10%fontsize 8%axis%axisnumbering%precision 1%xlabel x-axis%ylabel y-axis%grid 1,1,grey,2,2,2,red
  5263.         */
  5264.             temp = get_string(infile,1);
  5265.             fprintf(js_include_file,"var yaxislabel = \"%s\";",temp);
  5266.             break;
  5267.         case YLOGBASE:
  5268.         /*
  5269.         @ ylogbase number
  5270.         @ sets the logbase number for the y-axis
  5271.         @ default value 10
  5272.         @ use together with commands ylogscale / xylogscale
  5273.         */
  5274.             fprintf(js_include_file,"ylogbase=%d;",(int)(get_real(infile,1)));
  5275.             break;
  5276.         case YLOGSCALE:
  5277.         /*
  5278.          @ ylogscale xmajor,xminor,majorcolor,minorcolor
  5279.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  5280.          @ xmajor is the major step on the x-axis; xminor is the divisor for the x-step
  5281.          @ the linewidth is set using command 'linewidth int'
  5282.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  5283.          @ default logbase number = 10 ... when needed , set the logbase number with command 'ylogbase number'
  5284.          @ the x/y- axis numbering is triggered by keyword 'axisnumbering'<ul><li>use command 'precision' before 'ylogscale' command to set the precision (decimals) of the axis numbering</li><li>use commands 'xlabel some_text' and/or 'ylabel some_text' for text on axis : use command 'fontsize int' to set the fontsize (default 12px)</li><li>use command 'fontfamily fnt_family_string' to set the fonts for axis-numbering</li><li>use command'fontcolor' to set the colour</li></ul>
  5285.          @ note: the complete canvas will be used for the 'log paper'
  5286.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  5287.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  5288.          @ note: when using something like 'yrange 0.0001,0.01'...combined with commands 'mouse color,fontsize' and/or 'userdraw type,color'...<br /> make sure the precision is set accordingly (eg command 'precision 10000')
  5289.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  5290.          @ <b>attention</b>: keyword 'snaptogrid' may not lead to the desired result...
  5291.         */
  5292.             use_axis_numbering++;if(use_axis_numbering > 1){use_axis_numbering = 1;}
  5293.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  5294.             if( js_function[DRAW_YLOGSCALE] != 1 ){ js_function[DRAW_YLOGSCALE] = 1;}
  5295.             for(i=0;i<4;i++){
  5296.                 switch(i){
  5297.                     case 0: double_data[0] = get_real(infile,0);break; /* xmajor */
  5298.                     case 1: int_data[0] = (int) (get_real(infile,0));break; /* xminor */
  5299.                     case 2: stroke_color = get_color(infile,0); break;
  5300.                     case 3: fill_color = get_color(infile,1);
  5301.                         string_length = snprintf(NULL,0,"draw_grid%d(%d,%d,\"%s\",\"%s\",%.2f,%.2f,%d,\"%s\",\"%s\",%d,%f,%d,%d); ",canvas_root_id,GRID_CANVAS,line_width,stroke_color,fill_color,stroke_opacity,fill_opacity,font_size,font_family,font_color,use_axis_numbering,double_data[0],int_data[0],precision);
  5302.                         tmp_buffer = my_newmem(string_length+1);
  5303.                         snprintf(tmp_buffer,string_length,"draw_grid%d(%d,%d,\"%s\",\"%s\",%.2f,%.2f,%d,\"%s\",\"%s\",%d,%f,%d,%d); ",canvas_root_id,GRID_CANVAS,line_width,stroke_color,fill_color,stroke_opacity,fill_opacity,font_size,font_family,font_color,use_axis_numbering,double_data[0],int_data[0],precision);
  5304.                         fprintf(js_include_file,"use_ylogscale=1;snap_x = %f;snap_y = ylogbase;",double_data[0]/int_data[0]);
  5305.                         add_to_buffer(tmp_buffer);
  5306.                         break;
  5307.                     default:break;
  5308.                 }
  5309.             }
  5310.             break;
  5311.  
  5312.         case YUNIT:
  5313.         /*
  5314.          @ yunit some_unit_for_y-values
  5315.          @ unicode allowed (no html code)
  5316.          @ use together with command mousey
  5317.          @ will display the cursor y-coordinate in 'unit'
  5318.         */
  5319.             fprintf(js_include_file,"unit_y = \"%s\";",get_string(infile,1));
  5320.             break;
  5321.  
  5322.         case ZOOM:
  5323.         /*
  5324.          @ zoom button_color
  5325.          @ introduce a very small 'controlpanel' at the lower right corner
  5326.          @ giving six 15&times;15px 'active' rectangle areas<br />(for &times;,leftarrow,rightarrow,uparrow,downarrow and a '-' and a '+' sign ) for zooming and/or panning of the image
  5327.          @ the 'x' symbol will do a 'location.reload' of the page, and thus reset all canvas drawings.
  5328.          @ choose an appropriate colour, so the small 'x,arrows,-,+' are clearly visible
  5329.          @ command 'opacity' may be used to set stroke_opacity of 'buttons
  5330.          @ note: use command 'zoom' at the end of your script code (the same is true for command 'mouse')
  5331.          @ note: only objects that may be set draggable / clickable will be zoomed / panned
  5332.          @ note: when an object is dragged, zooming / panning will cause the coordinates to be reset to the original position :( <br />e.g. dragging / panning will get lost. (array with 'drag data' is erased)<br />This is a design flaw and not a feature !!
  5333.         */
  5334.             fprintf(js_include_file,"use_pan_and_zoom = 1;");
  5335.             use_pan_and_zoom = TRUE;
  5336.             stroke_color = get_color(infile,1);
  5337.             /* we use BG_CANVAS (0) */
  5338.             add_zoom_buttons(js_include_file,canvas_root_id,stroke_color,stroke_opacity);
  5339.             done = TRUE;
  5340.             break;
  5341.  
  5342. /* ready */
  5343.         default:sync_input(infile);
  5344.         break;
  5345.     }
  5346.   }
  5347.   /* we are done parsing script file */
  5348.   /* check if xrange / yrange was set explicit ... or use xmin=0 xmax=xsize ymin=0 ymax=ysize : Quadrant I */
  5349.   if( found_size_command == 1 ){
  5350.     fprintf(js_include_file,"var xmin = 0;var xmax = %d;var ymin = 0;var ymax = %d",xsize,ysize);
  5351.   }
  5352.   else
  5353.   {
  5354.     if( found_size_command != 3 ){
  5355.      canvas_error("Please specify both xrange and yrange ...");
  5356.     }
  5357.   }
  5358.  
  5359.   /* if needed, add generic draw functions (grid / xml etc) to buffer : these are no draggable/clickable shapes / objects  ! */
  5360.   add_javascript_function(js_function,canvas_root_id);
  5361.    /* add read_canvas() etc functions if needed */
  5362.   if( reply_format > 0 ){ add_read_canvas(canvas_root_id,reply_format,reply_precision);}
  5363.   if( use_pan_and_zoom == TRUE ){
  5364.   /* in case of zooming ... */
  5365.   fprintf(js_include_file,"\n<!-- some extra global stuff : need to rethink panning and zooming !!! -->\n\
  5366.  precision = %d;var xmin_start=xmin;var xmax_start=xmax;\
  5367.  var ymin_start=ymin;var ymax_start=xmax;\
  5368.  var zoom_x_increment=0;var zoom_y_increment=0;\
  5369.  var pan_x_increment=0;var pan_y_increment=0;\
  5370.  if(use_ylogscale == 0 ){\
  5371.   zoom_x_increment = (xmax - xmin)/20;zoom_y_increment = (ymax - ymin)/20;pan_x_increment = (xmax - xmin)/20;pan_y_increment = (ymax - ymin)/20;\
  5372.  }else{\
  5373.   zoom_x_increment = (xmax - xmin)/20;\
  5374.   pan_x_increment = (xmax - xmin)/20;\
  5375.  };\
  5376.  var zoom_xy=[xmin,xmax,ymin,ymax];\
  5377.  function start_canvas%d(type){\
  5378.   zoom_xy=[xmin,xmax,ymin,ymax];\
  5379.   switch(type){\
  5380.    case 0:xmin = xmin + zoom_x_increment;ymin = ymin + zoom_y_increment;xmax = xmax - zoom_x_increment;ymax = ymax - zoom_y_increment;break;\
  5381.    case 1:xmin = xmin - zoom_x_increment;ymin = ymin - zoom_y_increment;xmax = xmax + zoom_x_increment;ymax = ymax + zoom_y_increment;break;\
  5382.    case 2:xmin = xmin - pan_x_increment;ymin = ymin ;xmax = xmax - pan_x_increment;ymax = ymax;break;\
  5383.    case 3:xmin = xmin + pan_x_increment;ymin = ymin ;xmax = xmax + pan_x_increment;ymax = ymax;break;\
  5384.    case 4:xmin = xmin;ymin = ymin - pan_y_increment ;xmax = xmax;ymax = ymax - pan_y_increment;break;\
  5385.    case 5:xmin = xmin;ymin = ymin + pan_y_increment ;xmax = xmax;ymax = ymax + pan_y_increment;break;\
  5386.    case 6:xmin = xmin_start; xmax = xmax_start;ymin = ymin_start;ymax = ymax_start;break;\
  5387.    default:break;\
  5388.   };\
  5389.   if(xmax<=xmin){xmin=xmin_start;xmax=xmax_start;};\
  5390.   if(ymax<=ymin){ymin=ymin_start;ymax=ymax_start;};\
  5391.   try{dragstuff.Zoom(xmin,xmax,ymin,ymax);}catch(e){};\
  5392.   if(typeof(redraw_all%d) === 'function' ){redraw_all%d(zoom_xy);}\
  5393.   %s ;\
  5394.  };\
  5395.  start_canvas%d(333);\
  5396. };\
  5397. \n<!-- end wims_canvas_function -->\n\
  5398. wims_canvas_function%d();\n",precision,canvas_root_id,canvas_root_id,canvas_root_id,buffer,canvas_root_id,canvas_root_id);
  5399.   }
  5400.   else
  5401.   {
  5402.   /* no zoom, just add buffer */
  5403.   fprintf(js_include_file,"\n<!-- add buffer -->\n\
  5404.  %s\
  5405. };\n\
  5406. <!-- end wims_canvas_function -->\n\
  5407. wims_canvas_function%d();\n",buffer,canvas_root_id);
  5408.   }
  5409. /* done writing the javascript include file */
  5410. fclose(js_include_file);
  5411.  
  5412. }
  5413.  
  5414. /* if using a tooltip, this should always be printed to the *.phtml file, so stdout */
  5415.  if( use_tooltip > 0 ){
  5416.   if( use_tooltip == 1 ){
  5417.    add_js_tooltip(canvas_root_id,tooltip_text,bgcolor,xsize,ysize);
  5418.   }
  5419.   else
  5420.   {
  5421.    if( use_tooltip == 2 ){
  5422.     add_js_popup(canvas_root_id,xsize,ysize,getfile_cmd);
  5423.    }
  5424.   }
  5425.  }
  5426. exit(EXIT_SUCCESS);
  5427. }
  5428. /* end main() */
  5429.  
  5430. /******************************************************************************
  5431. **
  5432. **  sync_input
  5433. **
  5434. **  synchronises input line - reads to end of line, leaving file pointer
  5435. **  at first character of next line.
  5436. **
  5437. **  Used by:
  5438. **  main program - error handling.
  5439. **
  5440. ******************************************************************************/
  5441. void sync_input(FILE *infile)
  5442. {
  5443.         int c = 0;
  5444.  
  5445.         if( c == '\n' || c == ';' ) return;
  5446.         while( ( (c=getc(infile)) != EOF ) && (c != '\n') && (c != '\r') && (c != ';')) ;
  5447.         if( c == EOF ) finished = 1;
  5448.         if( c == '\n' || c == '\r' || c == ';') line_number++;
  5449.         return;
  5450. }
  5451.  
  5452. /******************************************************************************/
  5453.  
  5454. char *str_replace(const char *str, const char *old, const char *new){
  5455. /* http://creativeandcritical.net/str-replace-c/ */
  5456.     if(strlen(str) > MAX_BUFFER){canvas_error("string argument too big");}
  5457.     char *ret, *r;
  5458.     const char *p, *q;
  5459.     size_t oldlen = strlen(old);
  5460.     size_t count = 0;
  5461.     size_t retlen = 0;
  5462.     size_t newlen = strlen(new);
  5463.     if (oldlen != newlen){
  5464.         for (count = 0, p = str; (q = strstr(p, old)) != NULL; p = q + oldlen){
  5465.             count++;
  5466.             retlen = p - str + strlen(p) + count * (newlen - oldlen);
  5467.         }
  5468.     }
  5469.     else
  5470.     {
  5471.         retlen = strlen(str);
  5472.     }
  5473.  
  5474.     if ((ret = malloc(retlen + 1)) == NULL){
  5475.         ret = NULL;
  5476.         canvas_error("string argument is NULL");
  5477.     }
  5478.     else
  5479.     {
  5480.         for (r = ret, p = str; (q = strstr(p, old)) != NULL; p = q + oldlen) {
  5481.             size_t l = q - p;
  5482.             memcpy(r, p, l);
  5483.             r += l;
  5484.             memcpy(r, new, newlen);
  5485.             r += newlen;
  5486.         }
  5487.         strcpy(r, p);
  5488.     }
  5489.     return ret;
  5490. }
  5491.  
  5492. /******************************************************************************/
  5493.  
  5494. char *get_color(FILE *infile , int last){
  5495.     int c,i = 0,is_hex = 0;
  5496.     char temp[MAX_COLOR_STRING], *string;
  5497.     const char *not_allowed = "0123456789";
  5498.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') && ( c != ',' ) && ( c != ';' )  && ( c != '\t' ) ){
  5499.         if( i > MAX_COLOR_STRING ){ canvas_error("colour string is too big ... ? ");}
  5500.         if( c == '#' ){
  5501.             is_hex = 1;
  5502.         }
  5503.         if( c != ' '){
  5504.             if( is_hex == 0 ){if(strchr(not_allowed,c) != 0){canvas_error("found something like a number...but is should have been a colour or #hex color number...<br />Do not use R,G,B !!! ");}}
  5505.             temp[i]=tolower(c);
  5506.             i++;
  5507.         }
  5508.     }
  5509.     if( ( c == '\n' || c == EOF || c == ';' || c == '\t' ) && last == 0){canvas_error("expecting more arguments in command");}
  5510.     if( c == '\n' || c == ';'  || c == '\t' ){ done = TRUE; line_number++; }
  5511.     if( c == EOF ){finished = 1;}
  5512.     if( finished == 1 && last != 1 ){ canvas_error("expected more arguments");}
  5513.     temp[i]='\0';
  5514.     if( strlen(temp) == 0 ){ canvas_error("expected a colorname or hexnumber, but found nothing !!");}
  5515.     if( is_hex == 1 ){
  5516.         char red[3], green[3], blue[3];
  5517.         red[0]   = toupper(temp[1]); red[1]   = toupper(temp[2]); red[2]   = '\0';
  5518.         green[0] = toupper(temp[3]); green[1] = toupper(temp[4]); green[2] = '\0';
  5519.         blue[0]  = toupper(temp[5]); blue[1]  = toupper(temp[6]); blue[2]  = '\0';
  5520.         int r = (int) strtol(red,   NULL, 16);
  5521.         int g = (int) strtol(green, NULL, 16);
  5522.         int b = (int) strtol(blue,  NULL, 16);
  5523.         string = (char *)my_newmem(12);
  5524.         snprintf(string,11,"%d,%d,%d",r,g,b);
  5525.         return string;
  5526.     }
  5527.     else
  5528.     {
  5529.         string = (char *)my_newmem(sizeof(temp));
  5530.         snprintf(string,sizeof(temp),"%s",temp);
  5531.         for( i = 0; i < NUMBER_OF_COLORNAMES ; i++ ){
  5532.             if( strcmp( colors[i].name , string ) == 0 ){
  5533.                 return colors[i].rgb;
  5534.             }
  5535.         }
  5536.         canvas_error("I was expecting a color name or hexnumber...but found nothing.");
  5537.     }
  5538.     return "0,0,255";
  5539. }
  5540.  
  5541. char *get_string(FILE *infile,int last){ /* last = 0 : more arguments ; last=1 final argument */
  5542.     int c,i=0;
  5543.     char  temp[MAX_BUFFER], *string;
  5544.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') && ( c != '\t') ){
  5545.         temp[i]=c;
  5546.         i++;
  5547.         if(i > MAX_BUFFER){ canvas_error("string size too big...repeat command to fit string");break;}
  5548.     }
  5549.     if( ( c == '\n' ||  c == '\t'  || c == EOF ) && last == 0){canvas_error("expecting more arguments in command");}
  5550.     if( c == '\n' ||  c == '\t') { done = TRUE; line_number++; }
  5551.     if( c == EOF ) {finished = 1;}
  5552.     temp[i]='\0';
  5553.     if( strlen(temp) == 0 && last != 3 ){ canvas_error("expected a word or string, but found nothing !!");}
  5554.     string=(char *)my_newmem(strlen(temp));
  5555.     snprintf(string,sizeof(temp),"%s",temp);
  5556.     return string;
  5557. }
  5558.  
  5559. char *get_string_argument(FILE *infile,int last){  /* last = 0 : more arguments ; last=1 final argument */
  5560.     int c,i=0;
  5561.     char temp[MAX_BUFFER], *string;
  5562.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') && ( c != '\t') && ( c != ',')){
  5563.         temp[i]=c;
  5564.         i++;
  5565.         if(i > MAX_BUFFER){ canvas_error("string size too big...will cut it off");break;}
  5566.     }
  5567.     if( ( c == '\n' || c == EOF) && last == 0){canvas_error("expecting more arguments in command");}
  5568.     if( c == '\n' || c == '\t' ) { line_number++; }
  5569.     if( c == EOF ) {finished = 1;}
  5570.     if( finished == 1 && last == 0 ){ canvas_error("expected more arguments");}
  5571.     temp[i]='\0';
  5572. /*
  5573.     17.10.2014 removed (question Perrin)
  5574.     may cause some unwanted effects...
  5575.     if( strlen(temp) == 0 ){ canvas_error("expected a word or string (without comma) , but found nothing !!");}
  5576. */
  5577.     string=(char *)my_newmem(sizeof(temp));
  5578.     snprintf(string,sizeof(temp),"%s",temp);
  5579.     done = TRUE;
  5580.     return string;
  5581. }
  5582.  
  5583. double get_real(FILE *infile, int last){ /* accept anything that looks like an number ?  last = 0 : more arguments ; last=1 final argument */
  5584.     int c,i=0,found_calc = 0;
  5585.     double y;
  5586.     char tmp[MAX_INT];
  5587.     /*
  5588.      these things are 'allowed functions' : *,^,+,-,/,(,),e,arc,cos,tan,pi,log,ln,sqrt,abs
  5589.      but there should be a better way to avoid segfaults !
  5590.     */
  5591.     const char *allowed = "earcostanpilogqb*+-/^()";/* assuming these are allowed stuff in a 'number'*/
  5592.     const char *not_allowed = "#dfhjkmuvwxyz{}[]%&~!$";/* avoid segmentation faults in a "atof()" and "wims eval" */
  5593.     while(( (c=getc(infile)) != EOF ) && ( c != ',') && (c != '\n') && (c != '\t') && ( c != ';')){
  5594.      if( c != ' ' ){
  5595.       if( i == 0 &&  c == '+' ){
  5596.        continue;
  5597.       }
  5598.       else
  5599.       {
  5600.        c = tolower(c);
  5601.        if( strchr(not_allowed,c) != 0 ){canvas_error("found a character not associated with a number...");}
  5602.        if( strchr(allowed,c) != 0 ){found_calc = 1;}/* hand the string over to wims eval() */
  5603.        tmp[i] = c;
  5604.        i++;
  5605.       }
  5606.      }
  5607.      if( i > MAX_INT - 1){canvas_error("number too large");}
  5608.     }
  5609.     if( ( c == '\n' || c == EOF || c == ';' || c == '\t' ) && last == 0){canvas_error("expecting more arguments in command");}
  5610.     if( c == '\n' || c == ';' || c == '\t' ){ done = TRUE; line_number++; }
  5611.     if( c == EOF ){done = TRUE ; finished = 1;}
  5612.     tmp[i]='\0';
  5613.     if( strlen(tmp) == 0 ){canvas_error("expected a number , but found nothing !!");}
  5614.     if( found_calc == 1 ){ /* use wims eval to calculate 2*pi/3 */
  5615.      void *f = eval_create(tmp);
  5616.      assert(f);if( f == NULL ){canvas_error("I'm having trouble parsing your \"expression\" ") ;}
  5617.      y = eval_x(f, 1);
  5618.      /* if function is bogus; y = 1 : so no core dumps */
  5619.      eval_destroy(f);
  5620.     }
  5621.     else
  5622.     {
  5623.      y = atof(tmp);
  5624.     }
  5625.     return y;
  5626. }
  5627.  
  5628.  
  5629. void canvas_error(char *msg){
  5630.     fprintf(stdout,"\n</script><hr /><span style=\"color:red\">FATAL syntax error:line %d : %s</span><hr />",line_number,msg);
  5631.     finished = 1;
  5632.     exit(EXIT_SUCCESS);
  5633. }
  5634.  
  5635.  
  5636. /* convert x/y coordinates to pixel */
  5637. int x2px(double x){
  5638.  return x*xsize/(xmax - xmin) -  xsize*xmin/(xmax - xmin);
  5639. }
  5640.  
  5641. int y2px(double y){
  5642.  return -1*y*ysize/(ymax - ymin) + ymax*ysize/(ymax - ymin);
  5643. }
  5644.  
  5645. double px2x(int x){
  5646.  return (x*(xmax - xmin)/xsize + xmin);
  5647. }
  5648. double px2y(int y){
  5649.  return (y*(ymax - ymin)/ysize + ymin);
  5650. }
  5651.  
  5652. void add_to_buffer(char *tmp){
  5653.  if( tmp == NULL || tmp == 0 ){ canvas_error("nothing to add_to_buffer()...");}
  5654.  /*  do we have enough space left in buffer[MAX_BUFFER] ? */
  5655.  int space_left = (int) (sizeof(buffer) - strlen(buffer));
  5656.  if( space_left > strlen(tmp)){
  5657.   strncat(buffer,tmp,space_left - 1);/* add safely "tmp" to the string buffer */
  5658.  }
  5659.  else
  5660.  {
  5661.   canvas_error("buffer is too big\n");
  5662.  }
  5663.  tmp = NULL;free(tmp);
  5664.  return;
  5665. }
  5666.  
  5667. void reset(){
  5668.  if(use_filled == TRUE){use_filled = FALSE;}
  5669.  if(use_dashed == TRUE){use_dashed = FALSE;}
  5670.  if(use_rotate == TRUE){use_rotate = FALSE;}
  5671.  onclick = 0;
  5672. }
  5673.  
  5674.  
  5675.  
  5676. /* What reply format in read_canvas();
  5677.  
  5678. note:if userdraw is combined with inputfields...every "userdraw" based answer will append "\n" and  inputfield.value()
  5679. 1 = x1,x2,x3,x4....x_n
  5680.     y1,y2,y3,y4....y_n
  5681.  
  5682.     x/y in pixels
  5683.  
  5684. 2 = x1,x2,x3,x4....x_n
  5685.     y1,y2,y3,y4....y_n
  5686.     x/y in  xrange / yrange coordinate system
  5687.  
  5688. 3 = x1,x2,x3,x4....x_n
  5689.     y1,y2,y3,y4....y_n
  5690.     r1,r2,r3,r4....r_n
  5691.  
  5692.     x/y in pixels
  5693.     r in pixels
  5694.  
  5695. 4 = x1,x2,x3,x4....x_n
  5696.     y1,y2,y3,y4....y_n
  5697.     r1,r2,r3,r4....r_n
  5698.  
  5699.     x/y in  xrange / yrange coordinate system
  5700.     r in pixels
  5701.  
  5702. 5 = Ax1,Ax2,Ax3,Ax4....Ax_n
  5703.     Ay1,Ay2,Ay3,Ay4....Ay_n
  5704.     Bx1,Bx2,Bx3,Bx4....Bx_n
  5705.     By1,By2,By3,By4....By_n
  5706.     Cx1,Cx2,Cx3,Cx4....Cx_n
  5707.     Cy1,Cy2,Cy3,Cy4....Cy_n
  5708.     ....
  5709.     Zx1,Zx2,Zx3,Zx4....Zx_n
  5710.     Zy1,Zy2,Zy3,Zy4....Zy_n
  5711.  
  5712.     x/y in pixels
  5713.  
  5714. 6 = Ax1,Ax2,Ax3,Ax4....Ax_n
  5715.     Ay1,Ay2,Ay3,Ay4....Ay_n
  5716.     Bx1,Bx2,Bx3,Bx4....Bx_n
  5717.     By1,By2,By3,By4....By_n
  5718.     Cx1,Cx2,Cx3,Cx4....Cx_n
  5719.     Cy1,Cy2,Cy3,Cy4....Cy_n
  5720.     ....
  5721.     Zx1,Zx2,Zx3,Zx4....Zx_n
  5722.     Zy1,Zy2,Zy3,Zy4....Zy_n
  5723.  
  5724.     x/y in  xrange / yrange coordinate system
  5725.  
  5726. 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n
  5727.  
  5728.     x/y in pixels
  5729.  
  5730. 8 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n
  5731.  
  5732.     x/y in  xrange / yrange coordinate system
  5733.  
  5734. 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n
  5735.  
  5736.     x/y in pixels
  5737.  
  5738. 10 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n
  5739.  
  5740.     x/y in  xrange / yrange coordinate system
  5741.  
  5742. 11 = Ax1,Ay1,Ax2,Ay2
  5743.      Bx1,By1,Bx2,By2
  5744.      Cx1,Cy1,Cx2,Cy2
  5745.      Dx1,Dy1,Dx2,Dy2
  5746.      ......
  5747.      Zx1,Zy1,Zx2,Zy2
  5748.  
  5749.     x/y in  xrange / yrange coordinate system
  5750.  
  5751. 12 = Ax1,Ay1,Ax2,Ay2
  5752.      Bx1,By1,Bx2,By2
  5753.      Cx1,Cy1,Cx2,Cy2
  5754.      Dx1,Dy1,Dx2,Dy2
  5755.      ......
  5756.      Zx1,Zy1,Zx2,Zy2
  5757.  
  5758.     x/y in pixels
  5759.  
  5760. 13 = Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2,Cx1:Cy1:Cx2:Cy2,Dx1:Dy1:Dx2:Dy2, ... ,Zx1:Zy1:Zx2:Zy2
  5761.  
  5762.     x/y in  xrange / yrange coordinate system
  5763. 14 = Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2....Zx1:Zy1:Zx2:Zy2
  5764.     x/y in pixels
  5765. 15 = reply from inputfields,textareas
  5766.     reply1,reply2,reply3,...,reply_n
  5767.     only fields set write (a.g. will not read 'readonly' inputfield values'
  5768.  
  5769. 16 = read mathml inputfields only
  5770.  
  5771. 17 = read userdraw text only (x1,y1,text1\nx2,y2,text2..\n.x_n,y_n,text_n
  5772.  when ready : calculate size_t of string via snprintf(NULL,0,"blah blah...");
  5773.  
  5774. 18 = read clock(s) : H1:M1:S1,H2:M2:S2,...H_n:M_n:S_n
  5775. 19 = return clicked object number (analogue to shape-library onclick)
  5776. 20 = return x/y-data in x-range/y-range of all 'draggable' images
  5777. 21 = return verbatim coordinates (x1:y1) (x2:y2)...(x_n:y_n)
  5778. 22 = array : x1,y1,x2,y2,x3,y3,x4,y4...x_n,y_n
  5779.     x/y in  xrange / yrange coordinate system
  5780. 23 = answertype for a polyline : remove multiple occurences  due to reclick on a point to create next polyline segment
  5781. 24 = read all inputfield values: even those set 'readonly'
  5782. 25 = return all userdrawn arcs in degrees:
  5783. 26 = return all userdrawn arcs in radians:
  5784. 27 = return (only) userdraw inputfields array: x1,y1,text1 \n x2,y2,text2...
  5785. 28 = x1,y1,r1,x2,y2,r2...x_n,y_n,r_n
  5786.     x/y/r in  xrange / yrange coordinate system: may be used to reinput into command
  5787.     'circles color,x1,y1,r1,x2,y2,r2...x_n,y_n,r_n'
  5788.     will not return anything else (e.g. no inputfields , text etc)
  5789. 29 = mulidraw read :
  5790.  
  5791. */
  5792.  
  5793.  
  5794. void add_read_canvas(int canvas_root_id,int type_reply,int reply_precision){
  5795. /* just 1 reply type allowed */
  5796. fprintf(js_include_file,"\
  5797. \n<!-- begin set_reply_precision() -->\n\
  5798. function set_reply_precision(){\
  5799. var len = userdraw_x.length;\
  5800. var prec = %d;\
  5801. for(var p = 0 ; p < len ; p++ ){\
  5802.  userdraw_x[p] = (Math.round(prec*userdraw_x[p]))/prec;\
  5803.  userdraw_y[p] = (Math.round(prec*userdraw_y[p]))/prec;\
  5804. };\
  5805. len = userdraw_radius.length;\
  5806. if( len > 0 ){\
  5807.  for(var p = 0 ; p < len ; p++ ){\
  5808.   userdraw_radius[p] = (Math.round(prec*userdraw_radius[p]))/prec;\
  5809.  };\
  5810. };\
  5811. };",reply_precision);
  5812.  
  5813. switch(type_reply){
  5814. /*
  5815. answers may have:
  5816. x-values,y-values,r-values,input-fields,mathml-inputfields,text-typed answers
  5817. */
  5818.     case 1: fprintf(js_include_file,"\
  5819. \n<!-- begin function 1 read_canvas%d() -->\n\
  5820. read_canvas%d = function(){\
  5821. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  5822. set_reply_precision();\
  5823. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  5824.  var p = 0;var input_reply = new Array();\
  5825.  if( document.getElementById(\"canvas_input0\")){\
  5826.   var t = 0;\
  5827.   while(document.getElementById(\"canvas_input\"+t)){\
  5828.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  5829.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  5830.     p++;\
  5831.    };\
  5832.    t++;\
  5833.   };\
  5834.  };\
  5835.  if( typeof(userdraw_text) !== 'undefined' ){\
  5836.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+input_reply + \"\\n\"+userdraw_text;\
  5837.  }\
  5838.  else\
  5839.  {\
  5840.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+input_reply;\
  5841.  }\
  5842. }\
  5843. else\
  5844. {\
  5845.  if( typeof(userdraw_text) !== 'undefined' ){\
  5846.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_text;\
  5847.  }\
  5848.  else\
  5849.  {\
  5850.   return userdraw_x+\"\\n\"+userdraw_y;\
  5851.  }\
  5852. };\
  5853. };\n\
  5854. <!-- end function 1 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  5855.     break;
  5856.     case 2: fprintf(js_include_file,"\
  5857. \n<!-- begin function 2 read_canvas%d() -->\n\
  5858. read_canvas%d = function(){\
  5859. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  5860. set_reply_precision();\
  5861. var reply_x = new Array();var reply_y = new Array();var p = 0;\
  5862. var prec = %d;\
  5863. while(userdraw_x[p]){\
  5864.  reply_x[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec;\
  5865.  reply_y[p] = (Math.round(prec*(px2y(userdraw_y[p]))))/prec;\
  5866.  p++;\
  5867. };\
  5868. if(p == 0){return;};\
  5869. if( document.getElementById(\"canvas_input0\")){\
  5870.  var p = 0;var input_reply = new Array();\
  5871.  if( document.getElementById(\"canvas_input0\")){\
  5872.   var t = 0;\
  5873.   while(document.getElementById(\"canvas_input\"+t)){\
  5874.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  5875.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  5876.     p++;\
  5877.    };\
  5878.    t++;\
  5879.   };\
  5880.  };\
  5881.  if( typeof(userdraw_text) !== 'undefined' ){\
  5882.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  5883.  }\
  5884.  else\
  5885.  {\
  5886.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply;\
  5887.  }\
  5888. }\
  5889. else\
  5890. {\
  5891.  if( typeof(userdraw_text) !== 'undefined' ){\
  5892.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_text;\
  5893.  }\
  5894.  else\
  5895.  {\
  5896.   return reply_x+\"\\n\"+reply_y;\
  5897.  };\
  5898. };\
  5899. };\n\
  5900. <!-- end function 2 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  5901.     break;
  5902.     case 3: fprintf(js_include_file,"\
  5903. \n<!-- begin function 3 read_canvas%d() -->\n\
  5904. read_canvas%d = function(){\
  5905. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  5906. set_reply_precision();\
  5907. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  5908.  var p = 0;var input_reply = new Array();\
  5909.  if( document.getElementById(\"canvas_input0\")){\
  5910.   var t = 0;\
  5911.   while(document.getElementById(\"canvas_input\"+t)){\
  5912.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  5913.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  5914.     p++;\
  5915.    };\
  5916.    t++;\
  5917.   };\
  5918.  };\
  5919.  if( typeof(userdraw_text) !== 'undefined' ){\
  5920.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  5921.  }\
  5922.  else\
  5923.  {\
  5924.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+input_reply;\
  5925.  }\
  5926. }\
  5927. else\
  5928. {\
  5929.  if( typeof(userdraw_text) !== 'undefined' ){\
  5930.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+userdrawW_text;\
  5931.  }\
  5932.  else\
  5933.  {\
  5934.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius;\
  5935.  }\
  5936. }\
  5937. };\n\
  5938. <!-- end function 3 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  5939.     break;
  5940.     case 4: fprintf(js_include_file,"\
  5941. \n<!-- begin function 4 read_canvas%d() -->\n\
  5942. read_canvas%d = function(){\
  5943. var prec = %d;\
  5944. var reply_x = new Array();var reply_y = new Array();var p = 0;\
  5945. while(userdraw_x[p]){\
  5946.  reply_x[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec;\
  5947.  reply_y[p] = (Math.round(prec*(px2y(userdraw_y[p]))))/prec;;\
  5948.  p++;\
  5949. };\
  5950. if(p == 0){return;};\
  5951. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  5952.  var p = 0;var input_reply = new Array();\
  5953.  if( document.getElementById(\"canvas_input0\")){\
  5954.   var t = 0;\
  5955.   while(document.getElementById(\"canvas_input\"+t)){\
  5956.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  5957.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  5958.     p++;\
  5959.    };\
  5960.    t++;\
  5961.   };\
  5962.  };\
  5963.  if( typeof(userdraw_text) !== 'undefined' ){\
  5964.   return reply_x+\"\\n\"+reply_y +\"\\n\"+userdraw_radius+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  5965.  }\
  5966.  else\
  5967.  {\
  5968.   return reply_x+\"\\n\"+reply_y +\"\\n\"+userdraw_radius+\"\\n\"+input_reply;\
  5969.  }\
  5970. }\
  5971. else\
  5972. {\
  5973.  if( typeof(userdraw_text) !== 'undefined' ){\
  5974.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_radius+\"\\n\"+userdraw_text;\
  5975.  }\
  5976.  else\
  5977.  {\
  5978.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_radius;\
  5979.  }\
  5980. };\
  5981. };\n\
  5982. <!-- end function 4 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  5983.     break;
  5984.     /*
  5985.         attention: we reset userdraw_x / userdraw_y  : because  userdraw_x = [][] userdraw_y = [][]
  5986.         used for userdraw multiple paths
  5987.     */
  5988.     case 5: fprintf(js_include_file,"\
  5989. \n<!-- begin function 5 read_canvas%d() -->\n\
  5990. read_canvas%d = function(){\
  5991. set_reply_precision();\
  5992. var p = 0;\
  5993. var reply = \"\";\
  5994. for(p = 0; p < userdraw_x.length;p++){\
  5995.  if(userdraw_x[p] != null ){\
  5996.   reply = reply + userdraw_x[p]+\"\\n\"+userdraw_y[p]+\"\\n\";\
  5997.  };\
  5998. };\
  5999. if(p == 0){return;};\
  6000. userdraw_x = [];userdraw_y = [];\
  6001. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  6002.  var p = 0;var input_reply = new Array();\
  6003.  if( document.getElementById(\"canvas_input0\")){\
  6004.   var t = 0;\
  6005.   while(document.getElementById(\"canvas_input\"+t)){\
  6006.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  6007.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  6008.     p++;\
  6009.    };\
  6010.    t++;\
  6011.   };\
  6012.  };\
  6013.  if( typeof(userdraw_text) !== 'undefined' ){\
  6014.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  6015.  }\
  6016.  else\
  6017.  {\
  6018.   return reply +\"\\n\"+input_reply;\
  6019.  }\
  6020. }\
  6021. else\
  6022. {\
  6023.  if( typeof(userdraw_text) !== 'undefined' ){\
  6024.   return reply+\"\\n\"+userdraw_text;\
  6025.  }\
  6026.  else\
  6027.  {\
  6028.   return reply;\
  6029.  }\
  6030. };\
  6031. };\n\
  6032. <!-- end function 5 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  6033.     break;
  6034.     /*
  6035.         attention: we reset userdraw_x / userdraw_y  : because  userdraw_x = [][] userdraw_y = [][]
  6036.         used for userdraw multiple paths
  6037.     */
  6038.     case 6: fprintf(js_include_file,"\
  6039. \n<!-- begin function 6 read_canvas%d() -->\n\
  6040. read_canvas%d = function(){\
  6041. var p = 0;\
  6042. var reply = \"\";\
  6043. var tmp_x = new Array();\
  6044. var tmp_y = new Array();\
  6045. var prec = %d;\
  6046. for(p = 0 ; p < userdraw_x.length; p++){\
  6047.  tmp_x = userdraw_x[p];\
  6048.  tmp_y = userdraw_y[p];\
  6049.  if(tmp_x != null){\
  6050.   for(var i = 0 ; i < tmp_x.length ; i++){\
  6051.    tmp_x[i] = (Math.round(prec*(px2x(tmp_x[i]))))/prec;\
  6052.    tmp_y[i] = (Math.round(prec*(px2y(tmp_y[i]))))/prec;\
  6053.   };\
  6054.   reply = reply + tmp_x + \"\\n\" + tmp_y +\"\\n\";\
  6055.  };\
  6056. };\
  6057. if(p == 0){return;};\
  6058. userdraw_x = [];userdraw_y = [];\
  6059. if( document.getElementById(\"canvas_input0\") ){\
  6060.  var p = 0;var input_reply = new Array();\
  6061.  if( document.getElementById(\"canvas_input0\")){\
  6062.   var t = 0;\
  6063.   while(document.getElementById(\"canvas_input\"+t)){\
  6064.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  6065.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  6066.     p++;\
  6067.    };\
  6068.    t++;\
  6069.   };\
  6070.  };\
  6071.  if( typeof(userdraw_text) !== 'undefined' ){\
  6072.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  6073.  }\
  6074.  else\
  6075.  {\
  6076.   return reply +\"\\n\"+input_reply;\
  6077.  }\
  6078. }\
  6079. else\
  6080. {\
  6081.  if( typeof(userdraw_text) !== 'undefined' ){\
  6082.   return reply +\"\\n\"+userdraw_text;\
  6083.  }\
  6084.  else\
  6085.  {\
  6086.   return reply;\
  6087.  }\
  6088. };\
  6089. };\n\
  6090. <!-- end function 6 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  6091.     break;
  6092.     case 7: fprintf(js_include_file,"\
  6093. \n<!-- begin function 7 read_canvas%d() -->\n\
  6094. read_canvas%d = function(){\
  6095. set_reply_precision();\
  6096. var reply = new Array();\
  6097. var p = 0;\
  6098. while(userdraw_x[p]){\
  6099.  reply[p] = userdraw_x[p] +\":\" + userdraw_y[p];\
  6100.  p++;\
  6101. };\
  6102. if(p == 0){return;};\
  6103. if( document.getElementById(\"canvas_input0\") ){\
  6104.  var p = 0;var input_reply = new Array();\
  6105.  if( document.getElementById(\"canvas_input0\")){\
  6106.   var t = 0;\
  6107.   while(document.getElementById(\"canvas_input\"+t)){\
  6108.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  6109.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  6110.     p++;\
  6111.    };\
  6112.    t++;\
  6113.   };\
  6114.  };\
  6115.  if( typeof(userdraw_text) !== 'undefined' ){\
  6116.   return reply+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  6117.  }\
  6118.  else\
  6119.  {\
  6120.   return reply+\"\\n\"+input_reply;\
  6121.  }\
  6122. }\
  6123. else\
  6124. {\
  6125.  if( typeof(userdraw_text) !== 'undefined' ){\
  6126.   return reply+\"\\n\"+userdraw_text;\
  6127.  }\
  6128.  else\
  6129.  {\
  6130.   return reply;\
  6131.  }\
  6132. };\
  6133. };\n\
  6134. <!-- end function 7 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  6135.     break;
  6136.     case 8: fprintf(js_include_file,"\
  6137. \n<!-- begin function 8 read_canvas%d() -->\n\
  6138. read_canvas%d = function(){\
  6139. var reply = new Array();\
  6140. var p = 0;\
  6141. var prec = %d;\
  6142. while(userdraw_x[p]){\
  6143.  reply[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec +\":\" + (Math.round(prec*(px2y(userdraw_y[p]))))/prec;\
  6144.  p++;\
  6145. };\
  6146. if(p == 0){return;};\
  6147. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  6148.  var p = 0;var input_reply = new Array();\
  6149.  if( document.getElementById(\"canvas_input0\")){\
  6150.   var t = 0;\
  6151.   while(document.getElementById(\"canvas_input\"+t)){\
  6152.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  6153.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  6154.     p++;\
  6155.    };\
  6156.    t++;\
  6157.   };\
  6158.  };\
  6159.  if( typeof(userdraw_text) !== 'undefined' ){\
  6160.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  6161.  }\
  6162.  else\
  6163.  {\
  6164.   return reply +\"\\n\"+input_reply;\
  6165.  }\
  6166. }\
  6167. else\
  6168. {\
  6169.  if( typeof(userdraw_text) !== 'undefined' ){\
  6170.   return reply +\"\\n\"+userdraw_text;\
  6171.  }\
  6172.  else\
  6173.  {\
  6174.   return reply;\
  6175.  }\
  6176. };\
  6177. };\n\
  6178. <!-- end function 8 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  6179.     break;
  6180.     case 9: fprintf(js_include_file,"\
  6181. \n<!-- begin function 9 read_canvas%d() -->\n\
  6182. read_canvas%d = function(){\
  6183. set_reply_precision();\
  6184. var reply = new Array();\
  6185. var p = 0;\
  6186. while(userdraw_x[p]){\
  6187.  reply[p] = userdraw_x[p] +\":\" + userdraw_y[p] + \":\" + userdraw_radius[p];\
  6188.  p++;\
  6189. };\
  6190. if(p == 0){return;};\
  6191. if( document.getElementById(\"canvas_input0\") ){\
  6192.  var p = 0;var input_reply = new Array();\
  6193.  if( document.getElementById(\"canvas_input0\")){\
  6194.   var t = 0;\
  6195.   while(document.getElementById(\"canvas_input\"+t)){\
  6196.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  6197.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  6198.     p++;\
  6199.    };\
  6200.    t++;\
  6201.   };\
  6202.  };\
  6203.  if( typeof(userdraw_text) !== 'undefined' ){\
  6204.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  6205.  }\
  6206.  else\
  6207.  {\
  6208.   return reply +\"\\n\"+input_reply;\
  6209.  }\
  6210. }\
  6211. else\
  6212. {\
  6213.  if( typeof(userdraw_text) !== 'undefined' ){\
  6214.   return reply +\"\\n\"+userdraw_text;\
  6215.  }\
  6216.  else\
  6217.  {\
  6218.   return reply;\
  6219.  }\
  6220. };\
  6221. };\n\
  6222. <!-- end function 9 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  6223.     break;
  6224.     case 10: fprintf(js_include_file,"\
  6225. \n<!-- begin function 10 read_canvas%d() -->\n\
  6226. read_canvas%d = function(){\
  6227. var reply = new Array();\
  6228. var p = 0;\
  6229. var prec = %d;\
  6230. while(userdraw_x[p]){\
  6231.  reply[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec +\":\" + (Math.round(prec*(px2y(userdraw_y[p]))))/prec +\":\" + (Math.round(prec*userdraw_radius[p]))/prec;\
  6232.  p++;\
  6233. };\
  6234. if(p == 0){return;};\
  6235. if( document.getElementById(\"canvas_input0\") ){\
  6236.  var p = 0;var input_reply = new Array();\
  6237.  if( document.getElementById(\"canvas_input0\")){\
  6238.   var t = 0;\
  6239.   while(document.getElementById(\"canvas_input\"+t)){\
  6240.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  6241.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  6242.     p++;\
  6243.    };\
  6244.    t++;\
  6245.   };\
  6246.  };\
  6247.  if( typeof(userdraw_text) !== 'undefined' ){\
  6248.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  6249.  }\
  6250.  else\
  6251.  {\
  6252.   return reply +\"\\n\"+input_reply;\
  6253.  }\
  6254. }\
  6255. else\
  6256. {\
  6257.  if( typeof(userdraw_text) !== 'undefined' ){\
  6258.   return reply +\"\\n\"+userdraw_text;\
  6259.  }\
  6260.  else\
  6261.  {\
  6262.   return reply;\
  6263.  }\
  6264. };\
  6265. };\n\
  6266. <!-- end function 10 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  6267.     break;
  6268.     case 11: fprintf(js_include_file,"\
  6269. \n<!-- begin function 11 read_canvas%d() -->\n\
  6270. read_canvas%d = function(){\
  6271. var reply = \"\";\
  6272. var p = 0;\
  6273. var prec = %d;\
  6274. while(userdraw_x[p]){\
  6275.  reply = reply + (Math.round(prec*(px2x(userdraw_x[p]))))/prec +\",\" + (Math.round(prec*(px2y(userdraw_y[p]))))/prec +\",\" + (Math.round(prec*(px2x(userdraw_x[p+1]))))/prec +\",\" + (Math.round(prec*(px2y(userdraw_y[p+1]))))/prec +\"\\n\" ;\
  6276.  p = p+2;\
  6277. };\
  6278. if(p == 0){return;};\
  6279. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  6280.  var p = 0;var input_reply = new Array();\
  6281.  if( document.getElementById(\"canvas_input0\")){\
  6282.   var t = 0;\
  6283.   while(document.getElementById(\"canvas_input\"+t)){\
  6284.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  6285.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  6286.     p++;\
  6287.    };\
  6288.    t++;\
  6289.   };\
  6290.  };\
  6291.  if( typeof(userdraw_text) !== 'undefined' ){\
  6292.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  6293.  }\
  6294.  else\
  6295.  {\
  6296.   return reply +\"\\n\"+input_reply;\
  6297.  }\
  6298. }\
  6299. else\
  6300. {\
  6301.  if( typeof(userdraw_text) !== 'undefined' ){\
  6302.   return reply +\"\\n\"+userdraw_text;\
  6303.  }\
  6304.  else\
  6305.  {\
  6306.   return reply;\
  6307.  }\
  6308. };\
  6309. };\n\
  6310. <!-- end function 11 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  6311.     break;
  6312.     case 12: fprintf(js_include_file,"\
  6313. \n<!-- begin function 12 read_canvas%d() -->\n\
  6314. read_canvas%d = function(){\
  6315. set_reply_precision();\
  6316. var reply = \"\";\
  6317. var p = 0;\
  6318. for(p = 0; p< userdraw_x.lenght;p = p+2){\
  6319.  if(userdraw_x[p] != null){\
  6320.    reply = reply + userdraw_x[p] +\",\" + userdraw_y[p] +\",\" + userdraw_x[p+1] +\",\" + userdraw_y[p+1] +\"\\n\" ;\
  6321.  };\
  6322. };\
  6323. if(p == 0){return;};\
  6324. if( document.getElementById(\"canvas_input0\") ){\
  6325.  var p = 0;var input_reply = new Array();\
  6326.  if( document.getElementById(\"canvas_input0\")){\
  6327.   var t = 0;\
  6328.   while(document.getElementById(\"canvas_input\"+t)){\
  6329.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  6330.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  6331.     p++;\
  6332.    };\
  6333.    t++;\
  6334.   };\
  6335.  };\
  6336.  if( typeof(userdraw_text) !== 'undefined' ){\
  6337.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  6338.  }\
  6339.  else\
  6340.  {\
  6341.   return reply +\"\\n\"+input_reply;\
  6342.  }\
  6343. }\
  6344. else\
  6345. {\
  6346.  if( typeof(userdraw_text) !== 'undefined' ){\
  6347.   return reply +\"\\n\"+userdraw_text\
  6348.  }\
  6349.  else\
  6350.  {\
  6351.   return reply;\
  6352.  }\
  6353. };\
  6354. };\n\
  6355. <!-- end function 12 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  6356.     break;
  6357.     case 13: fprintf(js_include_file,"\
  6358. \n<!-- begin function 13 read_canvas%d() -->\n\
  6359. read_canvas%d = function(){\
  6360. var reply = new Array();\
  6361. var p = 0;var i = 0;\
  6362. var prec = %d;\
  6363. while(userdraw_x[p]){\
  6364.  reply[i] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec +\":\" + (Math.round(prec*(px2y(userdraw_y[p]))))/prec +\":\" + (Math.round(prec*(px2x(userdraw_x[p+1]))))/prec +\":\" + (Math.round(prec*(px2y(userdraw_y[p+1]))))/prec;\
  6365.  p = p+2;i++;\
  6366. };\
  6367. if(p == 0){return;};\
  6368. if( document.getElementById(\"canvas_input0\") ){\
  6369.  var p = 0;var input_reply = new Array();\
  6370.  if( document.getElementById(\"canvas_input0\")){\
  6371.   var t = 0;\
  6372.   while(document.getElementById(\"canvas_input\"+t)){\
  6373.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  6374.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  6375.     p++;\
  6376.    };\
  6377.    t++;\
  6378.   };\
  6379.  };\
  6380.  if( typeof(userdraw_text) !== 'undefined' ){\
  6381.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  6382.  }\
  6383.  else\
  6384.  {\
  6385.   return reply +\"\\n\"+input_reply;\
  6386.  }\
  6387. }\
  6388. else\
  6389. {\
  6390.  if( typeof(userdraw_text) !== 'undefined' ){\
  6391.   return reply +\"\\n\"+userdraw_text\
  6392.  }\
  6393.  else\
  6394.  {\
  6395.   return reply;\
  6396.  }\
  6397. };\
  6398. };\n\
  6399. <!-- end function 13 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  6400.     break;
  6401.     case 14: fprintf(js_include_file,"\
  6402. \n<!-- begin function 14 read_canvas%d() -->\n\
  6403. read_canvas%d = function(){\
  6404. set_reply_precision();\
  6405. var reply = new Array();\
  6406. var p = 0;var i = 0;\
  6407. while(userdraw_x[p]){\
  6408.  reply[i] = userdraw_x[p] +\":\" + userdraw_y[p] +\":\" + userdraw_x[p+1] +\":\" + userdraw_y[p+1];\
  6409.  p = p+2;i++;\
  6410. };\
  6411. if(p == 0){return;};\
  6412. if( document.getElementById(\"canvas_input0\") ){\
  6413.  var p = 0;var input_reply = new Array();\
  6414.  if( document.getElementById(\"canvas_input0\")){\
  6415.   var t = 0;\
  6416.   while(document.getElementById(\"canvas_input\"+t)){\
  6417.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  6418.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  6419.     p++;\
  6420.    };\
  6421.    t++;\
  6422.   };\
  6423.  };\
  6424.  if( typeof(userdraw_text) !== 'undefined' ){\
  6425.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  6426.  }\
  6427.  else\
  6428.  {\
  6429.   return reply +\"\\n\"+input_reply;\
  6430.  }\
  6431. }\
  6432. else\
  6433. {\
  6434.  if( typeof(userdraw_text) !== 'undefined' ){\
  6435.   return reply +\"\\n\"+userdraw_text;\
  6436.  }\
  6437.  else\
  6438.  {\
  6439.   return reply;\
  6440.  }\
  6441. };\
  6442. };\n\
  6443. <!-- end function 14 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  6444.     break;
  6445.     case 15: fprintf(js_include_file,"\
  6446. \n<!-- begin function 15  read_canvas%d() -->\n\
  6447. read_canvas%d = function(){\
  6448. var input_reply = new Array();\
  6449. var p = 0;\
  6450. if( document.getElementById(\"canvas_input0\")){\
  6451.  var t = 0;\
  6452.  while(document.getElementById(\"canvas_input\"+t)){\
  6453.   if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  6454.    input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  6455.    p++;\
  6456.   };\
  6457.   t++;\
  6458.  };\
  6459. };\
  6460. if( typeof(userdraw_text) !== 'undefined' ){\
  6461.   return input_reply +\"\\n\"+userdraw_text;\
  6462. }\
  6463. else\
  6464. {\
  6465.  return input_reply;\
  6466. };\
  6467. };\n\
  6468. <!-- end function 15 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  6469.     break;
  6470.     case 16: fprintf(js_include_file,"\
  6471. \n<!-- begin function 16 read_mathml() -->\n\
  6472. function read_mathml(){\
  6473. var reply = new Array();\
  6474. var p = 0;\
  6475. if( document.getElementById(\"mathml0\")){\
  6476.  while(document.getElementById(\"mathml\"+p)){\
  6477.   reply[p] = document.getElementById(\"mathml\"+p).value;\
  6478.   p++;\
  6479.  };\
  6480. };\
  6481. return reply;\
  6482. };\
  6483. this.read_mathml = read_mathml;\n\
  6484. <!-- end function 16 read_mathml() -->");
  6485.     break;
  6486.     case 17:  fprintf(js_include_file,"\
  6487. \n<!-- begin function 17 read_canvas%d() -->\n\
  6488. read_canvas%d = function(){\
  6489. var len = userdraw_x.length;\
  6490. if( len == 0){alert(\"no text typed...\");return;}\
  6491. var rep = px2x(userdraw_x[0])+\",\"+px2y(userdraw_y[0])+\",\"+userdraw_text[0];\
  6492. for(var p = 1 ; p < len ; p++){\
  6493.  rep = rep + \"\\n\" + px2x(userdraw_x[p]) + \",\" + px2y(userdraw_y[p]) + \",\" + userdraw_text[p];\
  6494. };\
  6495. return rep;\
  6496. };\n\
  6497. <!-- end function 17 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  6498.     break;
  6499.     case 18: fprintf(js_include_file,"\
  6500. \n<!-- javascript has no real modulo function -->\n\
  6501. function mod(n, m){\
  6502. var m = parseInt(((n %% m) + m) %% m);\
  6503. return m;\
  6504. };\
  6505. \n<!-- begin function 18 read_canvas%d() -->\n\
  6506. read_canvas%d = function(){\
  6507. var p = 0;\
  6508. var reply = new Array();\
  6509. var name;\
  6510. var t = true;\
  6511. var h;var m;var s;\
  6512. while(t){\
  6513.  try{\
  6514.   name = eval('clocks'+p);\
  6515.   h = name.H;m = name.M;s = name.S;\
  6516.   h = mod((h+m/60+s/3600),12);m = mod((m + s/60),60);s = mod(s,60);\
  6517.   reply[p] = h+\":\"+m+\":\"+s;\
  6518.   p++;\
  6519.  }catch(e){t=false;};\
  6520. };\
  6521. if( p == 0 ){alert(\"clock(s) not modified...\");return;}\
  6522. return reply;\
  6523. };\n\
  6524. <!-- end function 18 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  6525.     break;
  6526.     case 19: fprintf(js_include_file,"\
  6527. \n<!-- begin function 19 read_canvas%d() -->\n\
  6528. read_canvas%d = function(){\
  6529. return reply[0];\
  6530. };\n\
  6531. <!-- end function 19 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  6532.     break;
  6533.     case 20: fprintf(js_include_file,"\
  6534. \n<!-- begin function 20 read_canvas%d() -->\n\
  6535. read_canvas%d = function(){\
  6536. var prec = %d;\
  6537. var len  = ext_drag_images.length;\
  6538. var reply = new Array(len);\
  6539. for(var p = 0 ; p < len ; p++){\
  6540.    var img = ext_drag_images[p];\
  6541.    reply[p] = p+\":\"+(Math.round(prec*(px2x(img[6]))))/prec+\":\"+(Math.round(prec*(px2y(img[7]))))/prec;\
  6542. };\
  6543. return reply;\
  6544. };\n\
  6545. <!-- end function 20 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  6546.     break;
  6547.     case 21: fprintf(js_include_file,"\
  6548. \n<!-- begin function 21 read_canvas%d() -->\n\
  6549. read_canvas%d = function(){\
  6550. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  6551. var reply_coord = new Array();var p = 0;\
  6552. var prec = %d;\
  6553. while(userdraw_x[p]){\
  6554.  reply_coord[p] = \"(\"+(Math.round(prec*(px2x(userdraw_x[p]))))/prec+\":\"+(Math.round(prec*(px2y(userdraw_y[p]))))/prec+\")\";\
  6555.  p++;\
  6556. };\
  6557. if(p == 0){return;};\
  6558. if( document.getElementById(\"canvas_input0\") ){\
  6559.  var p = 0;var input_reply = new Array();\
  6560.  if( document.getElementById(\"canvas_input0\")){\
  6561.   var t = 0;\
  6562.   while(document.getElementById(\"canvas_input\"+t)){\
  6563.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  6564.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  6565.     p++;\
  6566.    };\
  6567.    t++;\
  6568.   };\
  6569.  };\
  6570.  if( typeof(userdraw_text) !== 'undefined' ){\
  6571.   return reply_coord+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  6572.  }\
  6573.  else\
  6574.  {\
  6575.   return reply_coord+\"\\n\"+input_reply;\
  6576.  }\
  6577. }\
  6578. else\
  6579. {\
  6580.  if( typeof(userdraw_text) !== 'undefined' ){\
  6581.   return reply_coord+\"\\n\"+userdraw_text;\
  6582.  }\
  6583.  else\
  6584.  {\
  6585.   return reply_coord;\
  6586.  };\
  6587. };\
  6588. };\n\
  6589. <!-- end function 21 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  6590.     break;
  6591.     case 22: fprintf(js_include_file,"\
  6592. \n<!-- begin function 22 read_canvas%d() -->\n\
  6593. read_canvas%d = function(){\
  6594. var reply = new Array();\
  6595. var lu = userdraw_x.length;\
  6596. if(lu == 0){return;};\
  6597. var idx = 0;\
  6598. var prec = %d;\
  6599. for(var p = 0 ; p < lu ; p++){\
  6600.  reply[idx] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec;idx++;\
  6601.  reply[idx] = (Math.round(prec*(px2y(userdraw_y[p]))))/prec;idx++;\
  6602. };\
  6603. if( document.getElementById(\"canvas_input0\") ){\
  6604.  var p = 0;var input_reply = new Array();\
  6605.  if( document.getElementById(\"canvas_input0\")){\
  6606.   var t = 0;\
  6607.   while(document.getElementById(\"canvas_input\"+t)){\
  6608.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  6609.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  6610.     p++;\
  6611.    };\
  6612.    t++;\
  6613.   };\
  6614.  };\
  6615.  if( typeof(userdraw_text) !== 'undefined' ){\
  6616.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  6617.  }\
  6618.  else\
  6619.  {\
  6620.   return reply +\"\\n\"+input_reply;\
  6621.  }\
  6622. }\
  6623. else\
  6624. {\
  6625.  if( typeof(userdraw_text) !== 'undefined' ){\
  6626.   return reply +\"\\n\"+userdraw_text;\
  6627.  }\
  6628.  else\
  6629.  {\
  6630.   return reply;\
  6631.  }\
  6632. };\
  6633. };\n\
  6634. <!-- end function 22 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  6635.     break;
  6636.     case 23: fprintf(js_include_file,"\
  6637. \n<!-- begin function 23 read_canvas%d() default 5 px marge -->\n\
  6638. read_canvas%d = function(){\
  6639. if( userdraw_x.length < 2){alert(\"nothing drawn...\");return;}\
  6640. var lu = userdraw_x.length;\
  6641. if( lu != userdraw_y.length ){ alert(\"x / y mismatch !\");return;}\
  6642. var reply_x = new Array();var reply_y = new Array();\
  6643. var marge = 5;var p = 0;\
  6644. var prec = %d;\
  6645. for(var i = 0; i < lu - 1 ; i++ ){\
  6646.  if( Math.abs(userdraw_x[i] - userdraw_x[i+1]) || Math.abs(userdraw_y[i] - userdraw_y[i+1])){\
  6647.   reply_x[p] = (Math.round(prec*(px2x(userdraw_x[i]))))/prec;reply_y[p] = (Math.round(prec*(px2y(userdraw_y[i]))))/prec;\
  6648.   if( isNaN(reply_x[p]) || isNaN(reply_y[p]) ){ alert(\"hmmmm ?\");return; };\
  6649.   p++;\
  6650.  };\
  6651.  reply_x[p] = (Math.round(prec*(px2x(userdraw_x[lu-1]))))/prec;reply_y[p] = (Math.round(prec*(px2y(userdraw_y[lu-1]))))/prec;\
  6652. };\
  6653. if( document.getElementById(\"canvas_input0\")){\
  6654.  var p = 0;var input_reply = new Array();\
  6655.  if( document.getElementById(\"canvas_input0\")){\
  6656.   var t = 0;\
  6657.   while(document.getElementById(\"canvas_input\"+t)){\
  6658.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  6659.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  6660.     p++;\
  6661.    };\
  6662.    t++;\
  6663.   };\
  6664.  };\
  6665.  if( typeof(userdraw_text) !== 'undefined' ){\
  6666.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  6667.  }\
  6668.  else\
  6669.  {\
  6670.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply;\
  6671.  }\
  6672. }\
  6673. else\
  6674. {\
  6675.  if( typeof(userdraw_text) !== 'undefined' ){\
  6676.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_text;\
  6677.  }\
  6678.  else\
  6679.  {\
  6680.   return reply_x+\"\\n\"+reply_y;\
  6681.  };\
  6682. };\
  6683. };\n\
  6684. <!-- end function 23 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  6685.     break;
  6686.     case 24: fprintf(js_include_file,"\n\
  6687. <!-- begin function 24  read_canvas%d() -->\n\
  6688. read_canvas%d = function(){\
  6689. var input_reply = new Array();\
  6690. var p = 0;\
  6691. if( document.getElementById(\"canvas_input0\")){\
  6692.  while(document.getElementById(\"canvas_input\"+p)){\
  6693.    input_reply[p] = document.getElementById(\"canvas_input\"+p).value;\
  6694.    p++;\
  6695.  };\
  6696.  return input_reply;\
  6697. };\
  6698. };\n\
  6699. <!-- end function 24 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  6700.     break;
  6701.     case 25:
  6702.     fprintf(js_include_file,"\n<!-- begin function 25 read_canvas%d() : angle(s) in degrees-->\n\
  6703. read_canvas%d = function(){\
  6704. if( userdraw_radius.length < 1){alert(\"nothing drawn...\");return;}\
  6705. var lu = userdraw_radius.length;\
  6706. var prec = %d;\
  6707. var angle_reply = new Array(lu);\
  6708. for(var p = 0 ; p < lu ; p++){\
  6709.  angle_reply[p] = (Math.round(prec*180*(userdraw_radius[p])/Math.PI))/prec;\
  6710. };\
  6711. return angle_reply;\
  6712. };\n\
  6713. <!-- end function 25 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  6714.     break;
  6715.     case 26:
  6716.     fprintf(js_include_file,"\n<!-- begin function 26 read_canvas%d() : angle(s) in radians-->\n\
  6717. read_canvas%d = function(){\
  6718. if( userdraw_radius.length < 1){alert(\"nothing drawn...\");return;}\
  6719. var lu = userdraw_radius.length;\
  6720. var prec = %d;\
  6721. var angle_reply = new Array(lu);\
  6722. for(var p = 0 ; p < lu ; p++){\
  6723.  angle_reply[p] = (Math.round(prec*(userdraw_radius[p])))/prec;\
  6724. };\
  6725. return angle_reply;\
  6726. };\n\
  6727. <!-- end function 26 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  6728.     break;
  6729.     case 27:
  6730.     fprintf(js_include_file,"\n<!-- begin function 27 read_canvas%d()  : inputfield(s) location and their values : -->\n\
  6731. read_canvas%d = function(){\
  6732. var lu = userdraw_x.length;\
  6733. if( lu < 1){alert(\"nothing drawn...\");return;}\
  6734. set_reply_precision();\
  6735. var prec = %d;\
  6736. var rep = (Math.round(prec*(px2x(userdraw_x[p]))))/prec+\",\"+(Math.round(prec*(px2y(userdraw_y[p]))))/prec+\",\"+ document.getElementById(\"canvas_input\"+p).value;\
  6737. for(var p = 0 ; p < lu ; p++){\
  6738.   rep = rep = \"\\n\" + (Math.round(prec*(px2x(userdraw_x[p]))))/prec+\":\"+(Math.round(prec*(px2y(userdraw_y[p]))))/prec+\":\"+ document.getElementById(\"canvas_input\"+p).value;\
  6739. };\
  6740. return rep;\
  6741. };\n\
  6742. <!-- end function 27 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  6743.     break;
  6744.     case 28:
  6745.     fprintf(js_include_file,"\n<!-- begin function 28 read_canvas%d() -->\n\
  6746. read_canvas%d = function(){\
  6747. var prec = %d;\
  6748. var reply = new Array();var p = 0;\
  6749. var idx = 0;\
  6750. while(userdraw_x[p]){\
  6751.  reply[idx] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec;\
  6752.  idx++;\
  6753.  reply[idx] = (Math.round(prec*(px2y(userdraw_y[p]))))/prec;\
  6754.  idx++;\
  6755.  reply[idx] = (Math.round(prec*(px2x(userdraw_radius[p]) - px2x(0))))/prec;\
  6756.  idx++;\
  6757.  p++;\
  6758. };\
  6759. if( p == 0){alert(\"nothing drawn...\");return;}\
  6760. return reply;\
  6761. };\n\
  6762. <!-- end function 28 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  6763.     break;
  6764.     case 29:
  6765.     fprintf(js_include_file,"\n<!-- begin function 29 read_canvas%d() -->\n\
  6766. function xy_precision(array_x,array_y){\
  6767. var len = array_x.length;\
  6768. var x_array = new Array(len);\
  6769. var y_array = new Array(len);\
  6770. var prec = %d;\
  6771. for(var p = 0 ; p < len ; p++ ){\
  6772.  x_array[p] = (Math.round(prec*(px2x(array_x[p]))))/prec;\
  6773.  y_array[p] = (Math.round(prec*(px2y(array_y[p]))))/prec;\
  6774. };\
  6775. return x_array+\";\"+y_array;\
  6776. };\n\
  6777. function round_to_pixel(array_r){\
  6778. var len = array_r.length;\
  6779. for(var p = 0 ; p < len ; p++ ){\
  6780.  array_r[p] = Math.round(array_r[p]);\
  6781. };\
  6782. return array_r;\
  6783. };\
  6784. read_canvas%d = function(){\
  6785. var reply=\" \";\
  6786. if( points_x && points_x.length > 0 ){reply = reply + xy_precision(points_x,points_y)+\"\\n\"; }else{ reply = reply + \"\\n\"; };\n\
  6787. if( circles_x && circles_x.length > 0 ){ reply = reply + xy_precision(circles_x,circles_y)+\";\"+round_to_pixel(multi_radius)+\"\\n\"; }else{ reply = reply + \"\\n\"; };\n\
  6788. if( segments_x && segments_x.length > 0 ){ reply = reply +  xy_precision(segments_x,segments_y)+\"\\n\"; }else{ reply = reply + \"\\n\"; };\n\
  6789. if( arrows_x && arrows_x.length > 0 ){ reply = reply +  xy_precision(arrows_x,arrows_y)+\"\\n\"; }else{ reply = reply + \"\\n\"; };\n\
  6790. if( lines_x && lines_x.length > 0 ){ reply = reply + xy_precision(lines_x,lines_y)+\"\\n\"; }else{ reply = reply + \"\\n\"; };\n\
  6791. if( triangles_x && triangles_x.length > 0){ reply = reply + xy_precision(triangles_x,triangles_y)+\"\\n\"; }else{ reply = reply + \"\\n\"; };\n\
  6792. if( polys_x && polys_x.length > 0){ reply = reply + xy_precision(polys_x,polys_y)+\"\\n\"; }else{ reply = reply + \"\\n\"; };\n\
  6793. if( rects_x && rects_x.length > 0 ){ reply = reply + xy_precision(rects_x,rects_y)+\"\\n\"; }else{ reply = reply + \"\\n\"; };\n\
  6794. if( closedpoly_x && closedpoly_x.length > 0){ closedpoly_x.pop();closedpoly_y.pop();reply = reply + xy_precision(closedpoly_x,closedpoly_y)+\"\\n\"; }else{ reply = reply + \"\\n\"; };\n\
  6795. if( parallelogram_x && parallelogram_x.length > 0){ reply = reply + xy_precision(parallelogram_x,parallelogram_y)+\"\\n\"; }else{ reply = reply + \"\\n\"; };\n\
  6796. if( text_x && text_x.length > 0){ reply = reply + xy_precision(text_x,text_y)+\";\"+text_abc+\"\\n\"; }else{ reply = reply + \"\\n\"; };\n\
  6797. return reply;\
  6798. };\n\
  6799. <!-- end function 29 read_canvas%d() -->",canvas_root_id,reply_precision,canvas_root_id,canvas_root_id);
  6800.     break;
  6801.     case 30:
  6802.     fprintf(js_include_file,"\n<!-- begin function 30 read_canvas%d() -->\n\
  6803. read_canvas%d = function(){\
  6804. var reply = new Array(3);\
  6805. var prec = %d;\
  6806. reply[0] = (Math.round(prec*(px2x(protractor_data[0]))))/prec;\
  6807. reply[1] = (Math.round(prec*(px2y(protractor_data[1]))))/prec;\
  6808. reply[2] = (Math.round(prec*(protractor_data[2])))/prec;\
  6809. return reply;\
  6810. };\n\
  6811. <!-- end function 30 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  6812.     break;
  6813.     case 31:
  6814.     fprintf(js_include_file,"\n<!-- begin function 31 read_canvas%d() -->\n\
  6815. read_canvas%d = function(){\
  6816. var reply = new Array(3);\
  6817. var prec = %d;\
  6818. reply[0] = (Math.round(prec*(px2x(ruler_data[0]))))/prec;\
  6819. reply[1] = (Math.round(prec*(px2y(ruler_data[1]))))/prec;\
  6820. reply[2] = (Math.round(prec*(ruler_data[2])))/prec;\
  6821. return reply;\
  6822. };\n\
  6823. <!-- end function 31 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  6824.     break;
  6825.     case 32:
  6826.     fprintf(js_include_file,"\n<!-- begin function 32 read_canvas%d() -->\n\
  6827. read_canvas%d = function(){\
  6828. var reply = new Array(6);\
  6829. var prec = %d;\
  6830. reply[0] = (Math.round(prec*(px2x(ruler_data[0]))))/prec;\
  6831. reply[1] = (Math.round(prec*(px2y(ruler_data[1]))))/prec;\
  6832. reply[2] = (Math.round(prec*(ruler_data[2])))/prec;\
  6833. reply[3] = (Math.round(prec*(px2x(protractor_data[0]))))/prec;\
  6834. reply[4] = (Math.round(prec*(px2y(protractor_data[1]))))/prec;\
  6835. reply[5] = (Math.round(prec*(protractor_data[2])))/prec;\
  6836. return reply;\
  6837. };\n\
  6838. <!-- end function 32 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  6839.     break;
  6840.     default: canvas_error("hmmm unknown replyformat...");break;
  6841. }
  6842.  return;
  6843. }
  6844.  
  6845.  
  6846. /*
  6847.  add drawfunction :
  6848.  - functions used by userdraw_primitives (circle,rect,path,triangle...)
  6849.  - things not covered by the drag&drop library (static objects like parallel, lattice ,gridfill , imagefill)
  6850.  - grid / mathml
  6851.  - will not scale or zoom in
  6852.  - will not be filled via pixel operations like fill / floodfill / filltoborder / clickfill
  6853.  - is printed directly into 'js_include_file'
  6854. */
  6855.  
  6856. void add_javascript_function(int js_function[],int canvas_root_id){
  6857. int i;
  6858. for(i = 0 ; i < MAX_JS_FUNCTIONS; i++){
  6859.  if( js_function[i] == 1){
  6860.     switch(i){
  6861.     case JS_FIND_ANGLE:
  6862.     fprintf(js_include_file,"\n\
  6863. <!-- function find_angle() -->\n\
  6864. function find_angle(xc,yc,x1,y1){\
  6865. var dx = x1 - xc;\
  6866. var dy = yc - y1;\
  6867. if( dx > 0 && dy < 0){ return Math.atan(-1*dy/dx);};\
  6868. if( dx < 0 && dy < 0){ return Math.PI + Math.atan(-1*dy/dx);};\
  6869. if( dx < 0 && dy > 0){ return Math.PI + Math.atan(-1*dy/dx);};\
  6870. if( dx > 0 && dy > 0){ return 2*Math.PI + Math.atan(-1*dy/dx);};};");
  6871.     break;
  6872.     case DRAW_EXTERNAL_IMAGE:
  6873. /* the external_canvas is already created: it needs to be FIRST in order to do some drawing onto it
  6874.  draw_external_image(URL,int_data[2],int_data[3],int_data[6],int_data[7],int_data[0],int_data[1],int_data[6],int_data[7],ext_img_cnt,int_data[8],int_data[9]);
  6875. */
  6876. fprintf(js_include_file,"\n<!-- drag external images --->\n\
  6877. var external_ctx = external_canvas.getContext(\"2d\");\
  6878. var external_canvas_rect = external_canvas.getBoundingClientRect();\
  6879. canvas_div.addEventListener(\"mousedown\",setxy,false);\
  6880. canvas_div.addEventListener(\"mouseup\",dragstop,false);\
  6881. canvas_div.addEventListener(\"mousemove\",dragxy,false);\
  6882. var selected_image = null;\
  6883. var ext_image_cnt = 0;\
  6884. var ext_drag_images = new Array();\
  6885. function draw_external_image(URL,sx,sy,swidth,sheight,x0,y0,width,height,idx,resizable,draggable,click_cnt){\
  6886. ext_image_cnt = idx;\
  6887. if(draggable == 1 ){\
  6888.  reply[click_cnt] = 0;\
  6889. };\
  6890. var image = new Image();\
  6891. image.src = URL;\
  6892. image.onload = function(){\
  6893.  if( sx < 1 ){ sx = 0; };\
  6894.  if( sy < 1 ){ sy = 0; };\
  6895.  if( swidth < 1 ){swidth = image.width;};\
  6896.  if( sheight < 1 ){sheight = image.height;};\
  6897.  if( width < 1 ){width = image.width;};\
  6898.  if( height < 1 ){height = image.height;};\
  6899.  if( resizable == 0 ){\
  6900.   if( swidth > image.width ){ swidth = image.width; };\
  6901.   if( sheight > image.height){ sheight = image.height;};\
  6902.   if( width > image.width ){ width = image.width; };\
  6903.   if( height > image.height){ height = image.height;};\
  6904.  };\
  6905.  var img = new Array(11);\
  6906.  img[0] = draggable;img[1] = image;img[2] = sx;img[3] = sy;img[4] = swidth;img[5] = sheight;\
  6907.  img[6] = x0;img[7] = y0;img[8] = width;img[9] = height;img[10] = click_cnt;\
  6908.  ext_drag_images[idx] = img;\
  6909.  external_ctx.drawImage(img[1],img[2],img[3],img[4],img[5],img[6],img[7],img[8],img[9]);\
  6910. };\
  6911. };\
  6912. function dragstop(evt){\
  6913. selected_image = null;return;\
  6914. };\
  6915. function dragxy(evt){\
  6916. if( selected_image != null ){\
  6917.  var xoff = (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft);\
  6918.  var yoff = (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);\
  6919.  var s_img = ext_drag_images[selected_image];\
  6920.  s_img[6] = evt.clientX - external_canvas_rect.left + xoff;\
  6921.  s_img[7] = evt.clientY - external_canvas_rect.top + yoff;\
  6922.  if( use_snap_to_points == 1){\
  6923.   var img_xy = snap_to_points(s_img[6],s_img[7]);\
  6924.   s_img[6] = img_xy[0];s_img[7] = img_xy[1];\
  6925.  }\
  6926.  else\
  6927.  {\
  6928.   if( x_use_snap_to_grid == 1 ){\
  6929.    s_img[6] = snap_to_x(s_img[6]);\
  6930.   };\
  6931.   if( y_use_snap_to_grid == 1 ){\
  6932.    s_img[7] = snap_to_x(s_img[7]);\
  6933.   };\
  6934.  };\
  6935.  ext_drag_images[selected_image] = s_img;\
  6936.  external_ctx.clearRect(0,0,xsize,ysize);\
  6937.  for(var i = 0; i <= ext_image_cnt ; i++){\
  6938.   var img = ext_drag_images[i];\
  6939.   external_ctx.drawImage(img[1],img[2],img[3],img[4],img[5],img[6],img[7],img[8],img[9]);\
  6940.  };\
  6941. };\
  6942. };\
  6943. function setxy(evt){\
  6944. if( ! selected_image && evt.which == 1 ){\
  6945.  var xoff = (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft);\
  6946.  var yoff = (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);\
  6947.  var xm = evt.clientX - external_canvas_rect.left + xoff;\
  6948.  var ym = evt.clientY - external_canvas_rect.top + yoff;\
  6949.  var img;\
  6950.  for(var p = 0 ; p <= ext_image_cnt ; p++){\
  6951.   if( ext_drag_images[p] ){\
  6952.    img = ext_drag_images[p];\
  6953.    if( img[0] != 0 ){\
  6954.     if( xm > img[6] && xm < img[6] + img[8]){\
  6955.      if( ym > img[7] && ym < img[7] + img[9]){\
  6956.       if( img[0] == 1){\
  6957.        if( reply[img[10]] == 1 ){\
  6958.         reply[img[10]] = 0;external_ctx.strokeStyle = '#ffffff';\
  6959.        }\
  6960.        else\
  6961.        {\
  6962.         reply[img[10]] = 1;external_ctx.strokeStyle = '#00ff00';\
  6963.        };\
  6964.        external_ctx.lineWidth = 6;\
  6965.        external_ctx.beginPath();\
  6966.        external_ctx.rect(img[6],img[7],img[8],img[9]);\
  6967.        external_ctx.closePath();\
  6968.        external_ctx.stroke();\
  6969.        return;\
  6970.       }\
  6971.       else\
  6972.       {\
  6973.        img[6] = xm;\
  6974.        img[7] = ym;\
  6975.        ext_drag_images[p] = img;\
  6976.        selected_image = p;\
  6977.        dragxy(evt);\
  6978.       };\
  6979.      };\
  6980.     };\
  6981.    };\
  6982.   };\
  6983.  };\
  6984. }\
  6985. else\
  6986. {\
  6987.  selected_image = null;\
  6988. };\
  6989. };");
  6990.     break;
  6991.     case DRAW_BEZIER:
  6992. fprintf(js_include_file,"\n<!-- draw bezier curve -->\n\
  6993. if( typeof(all_fill_patterns) != 'object' ){ var all_fill_patterns = []; };\
  6994. var draw_bezier = function(canvas_type,linewidth,xy_points,fill_color,fill_opacity,stroke_color,stroke_opacity,use_filled,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_affine,affine_matrix){\
  6995. var obj;\
  6996. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6997.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6998. }\
  6999. else\
  7000. {\
  7001.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  7002. };\
  7003. var ctx = obj.getContext(\"2d\");\
  7004. ctx.save();\
  7005. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  7006. ctx.lineWidth = linewidth;\
  7007. if(linewidth%%2 == 1 && typeof(zoom_x_increment) === 'undefined'){ctx.translate(0.5,0.5)};\
  7008. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);};\
  7009. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);};\
  7010. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  7011. ctx.beginPath();\
  7012. ctx.moveTo(x2px(xy_points[0]),y2px(xy_points[1]));\
  7013. ctx.bezierCurveTo(x2px(xy_points[2]),y2px(xy_points[3]),x2px(xy_points[4]),y2px(xy_points[5]),x2px(xy_points[6]),y2px(xy_points[7]));\
  7014. var color = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";\
  7015. if(use_filled > 1 ){ if(! all_fill_patterns[use_filled] ){ var pat = create_Pattern(0,0,use_filled,color); all_fill_patterns[use_filled] = pat;};ctx.fillStyle = all_fill_patterns[use_filled]; } else { ctx.fillStyle = color;};\
  7016. ctx.stroke();\
  7017. ctx.restore();\
  7018. };\n",canvas_root_id,canvas_root_id,canvas_root_id);
  7019.     break;
  7020.    
  7021.     case DRAW_GRIDFILL:/* not used for userdraw */
  7022. fprintf(js_include_file,"\n<!-- draw gridfill -->\n\
  7023. var grid_fill_pattern;\
  7024. var draw_gridfill = function(canvas_type,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize,use_userdraw){\
  7025. if( dx == 0 || dy == 0 ){alert(\"increment is zero !!! \");return;};\
  7026. if( typeof(fill_canvas_no) != 'object' ){ var fill_canvas_no = []; };\
  7027. var fc = %d+canvas_type;\n\
  7028. fill_canvas_no.push(fc);\
  7029. var obj = create_canvas%d(fc,xsize,ysize);\n\
  7030. var ctx = obj.getContext('2d');\n\
  7031. var x,y;\
  7032. ctx.fillStyle='rgba(255,255,255,0.01)';\n\
  7033. ctx.rect(0,0,xsize,ysize);\n\
  7034. ctx.fill();\n\
  7035. ctx.lineWidth = linewidth;\
  7036. if(linewidth%%2 == 1 && typeof(zoom_x_increment) === 'undefined'){ctx.translate(0.5,0.5)};\
  7037. ctx.strokeStyle=\"rgba(\"+color+\",0.01)\";\
  7038. for( x = 0 ; x < xsize ; x = x + dx ){\
  7039.  ctx.beginPath();\
  7040.  ctx.moveTo(x,0);\
  7041.  ctx.lineTo(x,ysize);\
  7042.  ctx.closePath();\
  7043.  ctx.stroke();\
  7044. };\
  7045. for( y = 0 ; y < ysize; y = y + dy ){\
  7046.  ctx.beginPath();\
  7047.  ctx.moveTo(0,y);\
  7048.  ctx.lineTo(xsize,y);\
  7049.  ctx.closePath();\
  7050.  ctx.stroke();\
  7051. };\
  7052. if( use_userdraw ){\
  7053.  grid_fill_pattern = ctx;\
  7054. }\
  7055. else\
  7056. {\
  7057.  setTimeout(function(){ filltoborder( x0,y0,color,color,canvas_type,true,ctx); },500);};return;\
  7058. };",canvas_root_id,canvas_root_id);
  7059.     break;
  7060.  
  7061.     case DRAW_IMAGEFILL:/* not  used for userdraw */
  7062. fprintf(js_include_file,"\n<!-- draw imagefill -->\n\
  7063. var draw_imagefill = function(canvas_type,x0,y0,URL,xsize,ysize,use_userdraw,use_scaling){\
  7064. if( typeof(fill_canvas_no) != 'object' ){ var fill_canvas_no = []; };\
  7065. var fc = %d+canvas_type;\
  7066. fill_canvas_no.push(fc);\
  7067. var obj = create_canvas%d(fc,xsize,ysize);\
  7068. var ctx = obj.getContext('2d');\
  7069. var img = new Image();\
  7070. img.src = URL;\
  7071. obj.style.visibility = 'hidden';\
  7072. img.onload = function(){\
  7073.  if( use_scaling == 1 ){\
  7074.   ctx.drawImage(img,x0,y0,xsize,ysize);\
  7075.  }else{\
  7076.   var w0 = img.width;var h0 = img.height;var w;var h;\
  7077.   for( w = x0; w < xsize ; w = w + w0 ){\
  7078.    for( h = y0; h < ysize; h = h + h0){\
  7079.      ctx.drawImage(img,w,h,w0,h0);\
  7080.    };\
  7081.   };\
  7082.  };\
  7083.  if( use_userdraw ){\
  7084.   image_pattern = ctx;\
  7085.  }\
  7086.  else\
  7087.  {\
  7088.   setTimeout(function(){ filltoborder( x0,y0,'red','red',canvas_type,true,ctx); },500);\
  7089.  };\
  7090. };\
  7091. };",canvas_root_id,canvas_root_id);
  7092.     break;
  7093.  
  7094.     case DRAW_DOTFILL:/* not  used for userdraw */
  7095. fprintf(js_include_file,"\n<!-- draw dotfill -->\n\
  7096. var dot_fill_pattern;\
  7097. var draw_dotfill = function(canvas_type,x0,y0,dx,dy,radius,color,opacity,xsize,ysize,use_userdraw){\n\
  7098. if( dx == 0 || dy == 0 ){alert(\"increment is zero !!! \");return;};\
  7099. if( typeof(fill_canvas_no) != 'object' ){ var fill_canvas_no = []; };\
  7100. var fc = %d+canvas_type;\
  7101. fill_canvas_no.push(fc);\
  7102. var obj = create_canvas%d(fc,xsize,ysize);\
  7103. var ctx = obj.getContext('2d');\
  7104. var x,y;\
  7105. ctx.fillStyle='rgba(255,255,255,0.01)';\
  7106. ctx.rect(0,0,xsize,ysize);\
  7107. ctx.fill();\
  7108. ctx.fillStyle=\"rgba(\"+color+\",0.01)\";\
  7109. ctx.strokeStyle=\"rgba(\"+color+\",0.01)\";\
  7110. for( x = 0 ; x < xsize ; x = x + dx ){\
  7111.  for( y = 0 ; y < ysize ; y = y + dy ){\
  7112.   ctx.beginPath();\
  7113.   ctx.arc(x,y,radius,0,2*Math.PI,false);\
  7114.   ctx.closePath();\
  7115.   ctx.fill();\
  7116.  };\
  7117. };\
  7118. if( use_userdraw ){\
  7119.  dot_fill_pattern = ctx;\
  7120. }\
  7121. else\
  7122. {\
  7123. setTimeout(function(){ filltoborder( x0,y0,color,color,canvas_type,true,ctx); },500);\
  7124. };\
  7125. return;\
  7126. };",canvas_root_id,canvas_root_id);
  7127.     break;
  7128.  
  7129.     case DRAW_TEXTFILL:/* not  used for userdraw */
  7130. fprintf(js_include_file,"\n<!-- draw textfill -->\n\
  7131. var text_fill_pattern;\
  7132. var draw_textfill = function(canvas_type,x0,y0,color,fontfamily,xsize,ysize,txt,use_userdraw){\n\
  7133. if( typeof(fill_canvas_no) != 'object' ){ var fill_canvas_no = []; };\
  7134. var fc = %d+canvas_type;\
  7135. fill_canvas_no.push(fc);\
  7136. var obj = create_canvas%d(fc,xsize,ysize);\
  7137. var ctx = obj.getContext('2d');\
  7138. ctx.font = fontfamily;\
  7139. var dx = (ctx.measureText(txt)).width;\
  7140. var dy = parseInt(fontfamily)+2;\
  7141. ctx.fillStyle='rgba(255,255,255,0.01)';\
  7142. ctx.rect(0,0,xsize,ysize);\
  7143. ctx.fill();\
  7144. ctx.fillStyle=\"rgba(\"+color+\",0.01)\";\
  7145. for(var x = 0 ; x < xsize ; x = x + dx ){\
  7146.  for(var y = 0 ; y < ysize ; y = y + dy ){\
  7147.   ctx.fillText(txt,x,y);\
  7148.  };\
  7149. };\
  7150. if( use_userdraw ){\
  7151.  text_fill_pattern = ctx;\
  7152. }\
  7153. else\
  7154. {\
  7155. setTimeout(function(){ filltoborder( x0,y0,color,color,canvas_type,true,ctx); },500);};\
  7156. return;};",canvas_root_id,canvas_root_id);
  7157.     break;
  7158.  
  7159.     case DRAW_DIAMONDFILL:/* not used for userdraw */
  7160. fprintf(js_include_file,"\n<!-- draw hatch fill -->\n\
  7161. var diamond_fill_pattern;\
  7162. var draw_diamondfill = function(canvas_type,x0,y0,dx,dy,linewidth,color,stroke_opacity,xsize,ysize,use_userdraw){\
  7163. if( dx == 0 || dy == 0 ){alert(\"increment is zero !!! \");return;};\
  7164. if( typeof(fill_canvas_no) != 'object' ){ var fill_canvas_no = []; };\
  7165. var fc = %d+canvas_type;\
  7166. fill_canvas_no.push(fc);\
  7167. var obj = create_canvas%d(fc,xsize,ysize);\
  7168. var ctx = obj.getContext('2d');\
  7169. var x;\
  7170. var y;\
  7171. ctx.lineWidth = linewidth;\
  7172. ctx.fillStyle='rgba(255,255,255,0.01)';\
  7173. ctx.rect(0,0,xsize,ysize);\
  7174. ctx.fill();\
  7175. if(linewidth%%2 == 1 && typeof(zoom_x_increment) === 'undefined'){ctx.translate(0.5,0.5)};\
  7176. ctx.strokeStyle=\"rgba(\"+color+\",0.01)\";\
  7177. y = ysize;\
  7178. ctx.beginPath();\
  7179. for( x = 0 ; x < xsize ; x = x + dx ){\
  7180.  ctx.moveTo(x,0);\
  7181.  ctx.lineTo(xsize,y);\
  7182.  y = y - dy;\
  7183. };\
  7184. y=0;\
  7185. for( x = xsize ; x > 0 ; x = x - dx){\
  7186.  ctx.moveTo(x,ysize);\
  7187.  ctx.lineTo(0,y);\
  7188.  y = y + dy;\
  7189. };\
  7190. y = 0;\
  7191. for( x = 0 ; x < xsize ; x = x + dx ){\
  7192.  ctx.moveTo(x,0);\
  7193.  ctx.lineTo(0,y);\
  7194.  y = y + dy;\
  7195. };\
  7196. y = 0;\
  7197. for( x = 0 ; x < xsize ; x = x + dx ){\
  7198.  ctx.moveTo(xsize,y);\
  7199.  ctx.lineTo(x,ysize);\
  7200.  y = y + dy;\
  7201. };\
  7202. ctx.closePath();\
  7203. ctx.stroke();\
  7204. if( use_userdraw ){\
  7205.  diamond_fill_pattern = ctx;\
  7206. }\
  7207. else\
  7208. {\
  7209.  setTimeout(function(){ filltoborder( x0,y0,color,color,canvas_type,true,ctx); },500);};\
  7210. return;\
  7211. }",canvas_root_id,canvas_root_id);
  7212.     break;
  7213.  
  7214.     case DRAW_HATCHFILL:/* not used for userdraw */
  7215. fprintf(js_include_file,"\n<!-- draw hatch fill -->\n\
  7216. var hatch_fill_pattern;\
  7217. var draw_hatchfill = function(canvas_type,x0,y0,dx,dy,linewidth,color,stroke_opacity,xsize,ysize,use_userdraw){\
  7218. if( dx == 0 || dy == 0 ){alert(\"increment is zero !!! \");return;};\
  7219. if( typeof(fill_canvas_no) != 'object' ){ var fill_canvas_no = []; };\
  7220. var fc = %d+canvas_type;\
  7221. fill_canvas_no.push(fc);\
  7222. var obj = create_canvas%d(fc,xsize,ysize);\
  7223. var ctx = obj.getContext('2d');\
  7224. var x,y;\
  7225. ctx.fillStyle='rgba(255,255,255,0.01)';\
  7226. ctx.rect(0,0,xsize,ysize);\
  7227. ctx.fill();\
  7228. ctx.strokeStyle=\"rgba(\"+color+\",0.01)\";\
  7229. ctx.lineWidth = linewidth;\
  7230. if(linewidth%%2 == 1 && typeof(zoom_x_increment) === 'undefined'){ctx.translate(0.5,0.5)};\
  7231. y = ysize;\
  7232. ctx.beginPath();\
  7233. for( x = 0 ; x < xsize ; x = x + dx ){\
  7234.  ctx.moveTo(x,0);\
  7235.  ctx.lineTo(xsize,y);\
  7236.  y = y - dy;\
  7237. };\
  7238. y = 0;\
  7239. for( x = xsize ; x >= dx ; x = x - dx){\
  7240.  ctx.moveTo(x,ysize);\
  7241.  ctx.lineTo(0,y);\
  7242.  y = y + dy;\
  7243. };\
  7244. ctx.closePath();\
  7245. ctx.stroke();\
  7246. if( use_userdraw ){\
  7247.  hatch_fill_pattern = ctx;\
  7248. }\
  7249. else\
  7250. {\
  7251.  setTimeout(function(){ filltoborder( x0,y0,color,color,canvas_type,true,ctx); },500);};\
  7252. return;\
  7253. };",canvas_root_id,canvas_root_id);
  7254.     break;
  7255.     case DRAW_CIRCLES:/*  used for userdraw */
  7256. fprintf(js_include_file,"\n<!-- draw circles -->\n\
  7257. if( typeof(all_fill_patterns) != 'object' ){ var all_fill_patterns = []; };\
  7258. var draw_circles = function(ctx,x_points,y_points,radius,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_affine,affine_matrix){\
  7259. ctx.save();\
  7260. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  7261. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  7262. ctx.lineWidth = line_width;\
  7263. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  7264. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\n\
  7265. var color = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";\
  7266. if(use_filled > 1 ){ if(! all_fill_patterns[use_filled] ){ var pat = create_Pattern(0,0,use_filled,color); all_fill_patterns[use_filled] = pat;};ctx.fillStyle = all_fill_patterns[use_filled]; } else { ctx.fillStyle = color;};\
  7267. if(line_width%%2 == 1 && typeof(zoom_x_increment) === 'undefined'){ctx.translate(0.5,0.5)};\
  7268. for(var p = 0 ; p < x_points.length ; p++ ){\
  7269.  ctx.beginPath();\
  7270.  ctx.arc(x_points[p],y_points[p],radius[p],0,2*Math.PI,false);\
  7271.  ctx.closePath();\
  7272.  if(use_filled != 0 ){ctx.fill();};\
  7273.  ctx.stroke();\
  7274. }\
  7275. ctx.restore();\
  7276. return;\
  7277. };");
  7278.     break;
  7279.     case DRAW_POLYLINE:/* user for userdraw : draw lines through points */
  7280. fprintf(js_include_file,"\n<!-- draw polyline -->\n\
  7281. if( typeof(all_fill_patterns) != 'object' ){ var all_fill_patterns = []; };\
  7282. var draw_polyline = function(ctx,x_points,y_points,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_affine,affine_matrix){\
  7283. ctx.save();\
  7284. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  7285. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  7286. ctx.lineWidth = line_width;\
  7287. if(line_width%%2 == 1 && typeof(zoom_x_increment) === 'undefined'){ctx.translate(0.5,0.5)};\
  7288. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  7289. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  7290. ctx.clearRect(0,0,xsize,ysize);\
  7291. ctx.beginPath();\
  7292. for(var p = 0 ; p < x_points.length-1 ; p++ ){\
  7293.  ctx.moveTo(x_points[p],y_points[p]);\
  7294.  ctx.lineTo(x_points[p+1],y_points[p+1]);\
  7295. }\
  7296. ctx.closePath();\
  7297. ctx.stroke();\
  7298. for(var p = 0 ; p < x_points.length ; p++ ){\
  7299.  ctx.beginPath();\
  7300.  ctx.arc(x_points[p],y_points[p],line_width,0,2*Math.PI,false);\
  7301.  ctx.closePath();ctx.fill();ctx.stroke();\
  7302. };\
  7303. ctx.restore();\
  7304. return;\
  7305. };");
  7306.     break;
  7307.  
  7308.     case DRAW_SEGMENTS:/*  used for userdraw */
  7309. fprintf(js_include_file,"\n<!-- draw segments -->\n\
  7310. var draw_segments = function(ctx,x_points,y_points,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_affine,affine_matrix){\
  7311. ctx.save();\
  7312. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  7313. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  7314. ctx.lineWidth = line_width;\
  7315. if(line_width%%2 == 1 && typeof(zoom_x_increment) === 'undefined'){ctx.translate(0.5,0.5)};\
  7316. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  7317. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  7318. for(var p = 0 ; p < x_points.length ; p = p+2 ){\
  7319.  ctx.beginPath();\
  7320.  ctx.moveTo(x_points[p],y_points[p]);\
  7321.  ctx.lineTo(x_points[p+1],y_points[p+1]);\
  7322.  ctx.closePath();\
  7323.  ctx.stroke();\
  7324.  }\
  7325.  ctx.restore();\
  7326.  return;\
  7327. };");
  7328.     break;
  7329.  
  7330.     case DRAW_LINES:/*  used for userdraw */
  7331. fprintf(js_include_file,"\n<!-- draw lines -->\n\
  7332. function calc_line(x1,x2,y1,y2){\
  7333. var marge = 2;\
  7334. if(x1 < x2+marge && x1>x2-marge){\
  7335.  return [x1,0,x1,ysize];\
  7336. };\
  7337. if(y1 < y2+marge && y1>y2-marge){\
  7338.  return [0,y1,xsize,y1];\
  7339. };\
  7340. var Y1 = y1 - (x1)*(y2 - y1)/(x2 - x1);\
  7341. var Y2 = y1 + (xsize - x1)*(y2 - y1)/(x2 - x1);\
  7342. return [0,Y1,xsize,Y2];\
  7343. };\
  7344. var draw_lines = function(ctx,x_points,y_points,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_affine,affine_matrix){\
  7345. ctx.save();\
  7346. var line = new Array(4);\
  7347. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  7348. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  7349. ctx.lineWidth = line_width;\
  7350. if(line_width%%2 == 1 && typeof(zoom_x_increment) === 'undefined'){ctx.translate(0.5,0.5)};\
  7351. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  7352. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  7353. for(var p = 0 ; p < x_points.length ; p = p+2 ){\
  7354.  line = calc_line(x_points[p],x_points[p+1],y_points[p],y_points[p+1]);\
  7355.  ctx.beginPath();\
  7356.  ctx.moveTo(line[0],line[1]);\
  7357.  ctx.lineTo(line[2],line[3]);\
  7358.  ctx.closePath();\
  7359.  ctx.stroke();\
  7360.  }\
  7361.  ctx.restore();\
  7362.  return;\
  7363. };");
  7364.     break;
  7365.  
  7366.     case DRAW_DEMILINES:/*  used for userdraw */
  7367. fprintf(js_include_file,"\n<!-- draw demilines -->\n\
  7368. function find_inf_point(x1,y1,x2,y2){\
  7369. if(x1<x2+2 && x1>x2-2){if(y1<y2){return [x1,y1,x1,ysize];}else{return [x1,0,x1,y1];};};\
  7370. var rc = (y2 - y1)/(x2 - x1);var q = y1 - (x1)*rc;\
  7371. if( x1 < x2 ){ return [x1,y1,xsize,rc*xsize+q];}else{return [x1,y1,0,q];};\
  7372. };\
  7373. var draw_demilines = function(ctx,x_points,y_points,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_affine,affine_matrix){\
  7374. ctx.save();\
  7375. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  7376. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  7377. ctx.lineWidth = line_width;\
  7378. if(line_width%%2 == 1 && typeof(zoom_x_increment) === 'undefined'){ctx.translate(0.5,0.5)};\
  7379. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  7380. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  7381. var pair = new Array(4);\
  7382. for(var p = 0 ; p < x_points.length ; p = p+2 ){\
  7383.  pair = find_inf_point(x_points[p],y_points[p],x_points[p+1],y_points[p+1]);\
  7384.  ctx.beginPath();\
  7385.  ctx.moveTo(pair[0],pair[1]);\
  7386.  ctx.lineTo(pair[2],pair[3]);\
  7387.  ctx.closePath();\
  7388.  ctx.stroke();\
  7389.  }\
  7390.  ctx.restore();\
  7391.  return;\
  7392. };");
  7393.     break;
  7394.  
  7395.     case DRAW_CROSSHAIRS:/*  used for userdraw */
  7396. fprintf(js_include_file,"\n<!-- draw crosshairs  -->\n\
  7397. var draw_crosshairs = function(ctx,x_points,y_points,line_width,crosshair_size,stroke_color,stroke_opacity,use_rotate,angle,use_affine,affine_matrix){\
  7398. ctx.save();\
  7399. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  7400. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  7401. ctx.lineWidth = line_width;\
  7402. if(line_width%%2 == 1 && typeof(zoom_x_increment) === 'undefined'){ctx.translate(0.5,0.5)};\
  7403. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  7404. var x1,x2,y1,y2;\
  7405. for(var p = 0 ; p < x_points.length ; p++ ){\
  7406.  x1 = x_points[p] - crosshair_size;\
  7407.  x2 = x_points[p] + crosshair_size;\
  7408.  y1 = y_points[p] - crosshair_size;\
  7409.  y2 = y_points[p] + crosshair_size;\
  7410.  ctx.beginPath();\
  7411.  ctx.moveTo(x1,y1);\
  7412.  ctx.lineTo(x2,y2);\
  7413.  ctx.closePath();\
  7414.  ctx.stroke();\
  7415.  ctx.beginPath();\
  7416.  ctx.moveTo(x2,y1);\
  7417.  ctx.lineTo(x1,y2);\
  7418.  ctx.closePath();\
  7419.  ctx.stroke();\
  7420. }\
  7421. ctx.restore();\
  7422.  return;\
  7423. };");
  7424.     break;
  7425.  
  7426.     case DRAW_RECTS:/*  used for userdraw */
  7427. fprintf(js_include_file,"\n<!-- draw rects -->\n\
  7428. if( typeof(all_fill_patterns) != 'object' ){ var all_fill_patterns = []; };\
  7429. var draw_rects = function(ctx,x_points,y_points,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_affine,affine_matrix){\
  7430. var color = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";\
  7431. ctx.save();\
  7432. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  7433. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  7434. ctx.lineWidth = line_width;\
  7435. if(line_width%%2 == 1 && typeof(zoom_x_increment) === 'undefined'){ctx.translate(0.5,0.5)};\
  7436. ctx.strokeStyle = 'rgba('+stroke_color+','+stroke_opacity+')';\
  7437. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];}};\
  7438. if(use_filled > 1 ){ if(! all_fill_patterns[use_filled] ){ var pat = create_Pattern(0,0,use_filled,color); all_fill_patterns[use_filled] = pat;};ctx.fillStyle = all_fill_patterns[use_filled]; } else { ctx.fillStyle = color;};\
  7439. for(var p = 0 ; p < x_points.length ; p = p + 2){\
  7440.  ctx.beginPath();\
  7441.  ctx.rect(x_points[p],y_points[p],x_points[p+1]-x_points[p],y_points[p+1]-y_points[p]);\
  7442.  ctx.closePath();\
  7443.  if(use_filled != 0 ){ctx.fill();}\
  7444.  ctx.stroke();\
  7445. };\
  7446. ctx.restore();\
  7447. return;\
  7448. };");
  7449.     break;
  7450.  
  7451.     case DRAW_ROUNDRECTS:/*  used for userdraw */
  7452. fprintf(js_include_file,"\n<!-- draw round rects -->\n\
  7453. if( typeof(all_fill_patterns) != 'object' ){ var all_fill_patterns = []; };\
  7454. var draw_roundrects = function(ctx,x_points,y_points,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype0,use_rotate,angle,use_affine,affine_matrix){\
  7455. var color = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";\
  7456. ctx.save();\
  7457. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  7458. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  7459. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  7460. ctx.lineWidth = line_width;\
  7461. if(line_width%%2 == 1 && typeof(zoom_x_increment) === 'undefined'){ctx.translate(0.5,0.5)};\
  7462. if(use_filled > 1 ){ if(! all_fill_patterns[use_filled] ){ var pat = create_Pattern(0,0,use_filled,color); all_fill_patterns[use_filled] = pat;};ctx.fillStyle = all_fill_patterns[use_filled]; } else { ctx.fillStyle = color;};\
  7463. var x,y,w,h,r;\
  7464. for(var p = 0; p < x_points.length; p = p+2){\
  7465.  x = x_points[p];y = y_points[p];w = x_points[p+1] - x;h = y_points[p+1] - y;r = parseInt(0.1*w);\
  7466.  ctx.beginPath();ctx.moveTo(x + r, y);\
  7467.  ctx.lineTo(x + w - r, y);\
  7468.  ctx.quadraticCurveTo(x + w, y, x + w, y + r);\
  7469.  ctx.lineTo(x + w, y + h - r);\
  7470.  ctx.quadraticCurveTo(x + w, y + h, x + w - r, y + h);\
  7471.  ctx.lineTo(x + r, y + h);\
  7472.  ctx.quadraticCurveTo(x, y + h, x, y + h - r);\
  7473.  ctx.lineTo(x, y + r);\
  7474.  ctx.quadraticCurveTo(x, y, x + r, y);\
  7475.  ctx.closePath();if( use_dashed == 1 ){ctx.setLineDash([dashtype0,dashtype1]);};\
  7476.  ctx.strokeStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  7477.  if( use_filled != 0 ){ctx.fill();};\
  7478.  ctx.stroke();\
  7479. }\
  7480. ctx.restore();\
  7481. };");
  7482.     break;
  7483.  
  7484.     case DRAW_ELLIPSES:/* not  used for userdraw */
  7485. fprintf(js_include_file,"\n<!-- draw ellipses -->\n\
  7486. if( typeof(all_fill_patterns) != 'object' ){ var all_fill_patterns = []; };\
  7487. var draw_ellipses = function(canvas_type,x_points,y_points,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype0,use_rotate,angle,use_affine,affine_matrix){\
  7488. var obj;\
  7489. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  7490.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  7491. }\
  7492. else\
  7493. {\
  7494.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  7495. };\
  7496. var ctx = obj.getContext(\"2d\");\
  7497. ctx.save();\
  7498. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  7499. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  7500. if(use_filled > 1 ){ if(! all_fill_patterns[use_filled] ){ var pat = create_Pattern(0,0,use_filled,color); all_fill_patterns[use_filled] = pat;};ctx.fillStyle = all_fill_patterns[use_filled]; } else { ctx.fillStyle = color;};\
  7501. var cx,cy,ry,rx;\
  7502. ctx.lineWidth = line_width;\
  7503. if(line_width%%2 == 1 && typeof(zoom_x_increment) === 'undefined'){ctx.translate(0.5,0.5)};\
  7504. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  7505. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  7506. for(var p=0;p< x_points.length;p = p+2){\
  7507.  ctx.beginPath();\
  7508.  cx = x_points[p];cy = y_points[p];rx = 0.25*x_points[p+1];ry = 0.25*y_points[p+1];\
  7509.  ctx.translate(cx - rx, cy - ry);\
  7510.  ctx.scale(rx, ry);\
  7511.  ctx.arc(1, 1, 1, 0, 2 * Math.PI, false);\
  7512.  if( use_filled != 0 ){ctx.fill();}\
  7513.  ctx.stroke();\
  7514. };\
  7515. ctx.restore();\
  7516. };",canvas_root_id,canvas_root_id,canvas_root_id);
  7517.     break;
  7518.  
  7519.     case DRAW_PATHS: /*  used for userdraw */
  7520. fprintf(js_include_file,"\n<!-- draw paths -->\n\
  7521. if( typeof(all_fill_patterns) != 'object' ){ var all_fill_patterns = []; };\
  7522. var draw_paths = function(ctx,x_points,y_points,line_width,closed_path,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype0,use_rotate,angle,use_affine,affine_matrix){\
  7523. ctx.save();\
  7524. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  7525. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  7526. ctx.lineWidth = line_width;\
  7527. if(line_width%%2 == 1 && typeof(zoom_x_increment) === 'undefined'){ctx.translate(0.5,0.5)};\
  7528. ctx.lineJoin = \"round\";\
  7529. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  7530. var color = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";\
  7531. if(use_filled > 1 ){ if(! all_fill_patterns[use_filled] ){ var pat = create_Pattern(0,0,use_filled,color); all_fill_patterns[use_filled] = pat;};ctx.fillStyle = all_fill_patterns[use_filled]; } else { ctx.fillStyle = color;};\
  7532. ctx.beginPath();\
  7533. ctx.moveTo(x_points[0],y_points[0]);\
  7534. for(var p = 1 ; p < x_points.length ; p++ ){ctx.lineTo(x_points[p],y_points[p]);}\
  7535. if(closed_path == 1){ctx.lineTo(x_points[0],y_points[0]);ctx.closePath();}\
  7536. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  7537. if(use_filled != 0){ctx.fill();}\
  7538. ctx.stroke();\
  7539. ctx.restore();\
  7540. return;\
  7541. };");
  7542.  
  7543.     break;
  7544.     case DRAW_ARROWS:/*  used for userdraw */
  7545. fprintf(js_include_file,"\n<!-- draw arrows -->\n\
  7546. var draw_arrows = function(ctx,x_points,y_points,arrow_head,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,dashtype1,type,use_rotate,angle,use_affine,affine_matrix){\
  7547. ctx.save();\
  7548. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  7549. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  7550. ctx.strokeStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  7551. ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  7552. ctx.lineWidth = line_width;\
  7553. if(line_width%%2 == 1 && typeof(zoom_x_increment) === 'undefined'){ctx.translate(0.5,0.5)};\
  7554. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  7555. ctx.lineCap = \"round\";\
  7556. var x1,y1,x2,y2,dx,dy,len;\
  7557. for(var p = 0 ; p < x_points.length - 1 ; p = p +2){\
  7558.   ctx.save();\
  7559.   x1 = x_points[p];y1 = y_points[p];x2 = x_points[p+1];y2 = y_points[p+1];dx = x2 - x1;dy = y2 - y1;\
  7560.   len = Math.sqrt(dx*dx+dy*dy);\
  7561.   ctx.translate(x2,y2);\
  7562.   ctx.rotate(Math.atan2(dy,dx));\
  7563.   ctx.lineCap = \"round\";\
  7564.   ctx.beginPath();\
  7565.   ctx.moveTo(0,0);\
  7566.   ctx.lineTo(-len,0);\
  7567.   ctx.closePath();\
  7568.   ctx.stroke();\
  7569.   ctx.beginPath();\
  7570.   ctx.moveTo(0,0);\
  7571.   ctx.lineTo(-1*arrow_head,-0.5*arrow_head);\
  7572.   ctx.lineTo(-1*arrow_head, 0.5*arrow_head);\
  7573.   ctx.closePath();\
  7574.   ctx.fill();\
  7575.   ctx.restore();\
  7576.   if( type == 2 ){\
  7577.     ctx.save();\
  7578.     ctx.translate(x1,y1);\
  7579.     ctx.rotate(Math.atan2(-dy,-dx));\
  7580.     ctx.beginPath();\
  7581.     ctx.moveTo(0,0);\
  7582.     ctx.lineTo(-1*arrow_head,-0.4*arrow_head);\
  7583.     ctx.lineTo(-1*arrow_head, 0.4*arrow_head);\
  7584.     ctx.closePath();\
  7585.     ctx.stroke();\
  7586.     ctx.fill();\
  7587.     ctx.restore();\
  7588.   };\
  7589.  };\
  7590.  ctx.restore();\
  7591.  return;\
  7592. };");
  7593.     break;
  7594.  
  7595.     case DRAW_VIDEO:/* not  used for userdraw */
  7596. fprintf(js_include_file,"\n<!-- draw video -->\n\
  7597. var draw_video = function(canvas_root_id,x,y,w,h,URL){\
  7598. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  7599. var video_div = document.createElement(\"div\");\
  7600. canvas_div.appendChild(video_div);\
  7601. video_div.style.position = \"absolute\";\
  7602. video_div.style.left = x+\"px\";\
  7603. video_div.style.top = y+\"px\";\
  7604. video_div.style.width = w+\"px\";\
  7605. video_div.style.height = h+\"px\";\
  7606. var video = document.createElement(\"video\");\
  7607. video_div.appendChild(video);\
  7608. video.style.width = w+\"px\";\
  7609. video.style.height = h+\"px\";\
  7610. video.autobuffer = true;\
  7611. video.controls = true;video.autoplay = false;\
  7612. var src = document.createElement(\"source\");\
  7613. src.type = \"video/mp4\";\
  7614. src.src = URL;\
  7615. video.appendChild(src);\
  7616. video.load();\
  7617. return;\
  7618. };");
  7619.     break;
  7620.  
  7621.     case DRAW_AUDIO:/* not used for userdraw */
  7622. fprintf(js_include_file,"\n<!-- draw audio -->\n\
  7623. var draw_audio = function(canvas_root_id,x,y,w,h,loop,visible,URL1,URL2){\
  7624. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  7625. var audio_div = document.createElement(\"div\");\
  7626. canvas_div.appendChild(audio_div);\
  7627. audio_div.style.position = \"absolute\";\
  7628. audio_div.style.left = x+\"px\";\
  7629. audio_div.style.top = y+\"px\";\
  7630. audio_div.style.width = w+\"px\";\
  7631. audio_div.style.height = h+\"px\";\
  7632. var audio = document.createElement(\"audio\");\
  7633. audio_div.appendChild(audio);\
  7634. audio.setAttribute(\"style\",\"width:\"+w+\"px;height:\"+h+\"px\");\
  7635. audio.autobuffer = true;\
  7636. if(visible == 1 ){ audio.controls = true;audio.autoplay = false;}else{ audio.controls = false;audio.autoplay = true;};\
  7637. if(loop == 1 ){ audio.loop = true;}else{ audio.loop = false;};\
  7638. var src1 = document.createElement(\"source\");\
  7639. src1.type = \"audio/ogg\";\
  7640. src1.src = URL1;\
  7641. audio.appendChild(src1);\
  7642. var src2 = document.createElement(\"source\");\
  7643. src2.type = \"audio/mpeg\";\
  7644. src2.src = URL2;\
  7645. audio.appendChild(src2);\
  7646. audio.load();\
  7647. return;\
  7648. };");
  7649.     break;
  7650.  
  7651.     case DRAW_HTTP:/* not  used for userdraw */
  7652. fprintf(js_include_file,"\n<!-- draw http -->\n\
  7653. var draw_http = function(canvas_root_id,x,y,w,h,URL){\
  7654. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  7655. var http_div = document.createElement(\"div\");\
  7656. var iframe = document.createElement(\"iframe\");\
  7657. canvas_div.appendChild(http_div);\
  7658. http_div.appendChild(iframe);\
  7659. iframe.src = URL;\
  7660. iframe.setAttribute(\"width\",w);\
  7661. iframe.setAttribute(\"height\",h);\
  7662. return;\
  7663. };");
  7664.     break;
  7665.  
  7666.     case DRAW_XML: /*
  7667.     onclick=1 : click
  7668.     onclick=2 drag
  7669.     xy:drag_type = 0;
  7670.     x:    drag_type = 1;
  7671.     y:    drag_type = 2;
  7672.     */
  7673.  
  7674. fprintf(js_include_file,"\n<!-- draw xml -->\n\
  7675. var draw_xml = function(canvas_root_id,x,y,mathml,drag_type,onclick,click_cnt,stroke_color,stroke_opacity,fill_color,fill_opacity){\
  7676. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  7677. var xml_div = document.createElement(\"div\");\
  7678. canvas_div.appendChild(xml_div);\
  7679. xml_div.innerHTML = mathml;\
  7680. xml_div.style.color = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  7681. var color_org = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  7682. var back_color = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";\
  7683. var no_color = \"rgba(255,255,255,0)\";\
  7684. xml_div.style.position = \"absolute\"; xml_div.style.left = x+\"px\";xml_div.style.top = y+\"px\";\
  7685. var dragging = false;\
  7686. if( onclick == 2 ){reply[click_cnt] = px2x(x)+','+px2y(y);};\
  7687. if( onclick == 1 ){reply[click_cnt] = 0;};\
  7688. if( onclick == 2 ){\
  7689.  xml_div.onclick = function(){\
  7690.   canvas_div.onclick = function(evt){if(dragging){dragging = false;xml_div.style.color = color_org; xml_div.style.backgroundColor = no_color;}else{dragging = true;xml_div.style.color = 'red';xml_div.style.backgroundColor = back_color;};};\
  7691.   canvas_div.onmousemove = function(evt){\
  7692.    if(!dragging){return;};\
  7693.    var x1;var y1;\
  7694.    var mouse = dragstuff.getMouse(evt,xml_div);\
  7695.    switch(drag_type){\
  7696.     case 0: x1 = mouse.x;y1 = mouse.y;break;\
  7697.     case 1: x1 = mouse.x;y1 = y;break;\
  7698.     case 2: x1 = x;y1 = mouse.y;break;\
  7699.     default:x1 = x;y1 = y; break;\
  7700.    };\
  7701.    if( x_use_snap_to_grid == 1 ){ x1 = snap_to_x(x1);};\
  7702.    if( y_use_snap_to_grid == 1 ){ y1 = snap_to_y(y1);};\
  7703.    if( use_snap_to_points != 0 ){ var xy = new Array(2);if( use_snap_to_points == 1 ){xy = snap_to_points(x1,y1);}else{xy = snap_to_fun(x1,y1);};x1 = xy[0];y1 = xy[1];};\
  7704.    xml_div.style.left = x1 + 'px';xml_div.style.top = y1 + 'px';\
  7705.    reply[click_cnt] = px2x(x1)+','+px2y(y1);\
  7706.   };\
  7707.  };\
  7708. };\
  7709. if(onclick == 1){\
  7710.  xml_div.onclick = function(){\
  7711.  if(reply[click_cnt] == 0){ reply[click_cnt] = 1; xml_div.style.color = 'red';xml_div.style.backgroundColor = back_color;}else{reply[click_cnt] = 0;xml_div.style.color = color_org;xml_div.style.backgroundColor = no_color;};};\
  7712. };\
  7713. return;\
  7714. };");
  7715.     break;
  7716.     case DRAW_SGRAPH:
  7717. /*
  7718.  xstart = given
  7719.  ystart = given
  7720.  sgraph(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily)
  7721. */
  7722. fprintf(js_include_file,"\n<!-- draw sgraph -->\n\
  7723. var draw_sgraph = function(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily,opacity,font_size){\
  7724. var obj;if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){obj = document.getElementById(\"wims_canvas%d\"+canvas_type);}else{ obj = create_canvas%d(canvas_type,xsize,ysize);};\
  7725. var ctx = obj.getContext(\"2d\");\
  7726. ctx.font = fontfamily;\
  7727. var minor_opacity = 0.8*opacity;\
  7728. ctx.clearRect(0,0,xsize,ysize);\
  7729. var zero_x = 0.1*xsize;\
  7730. var zero_y = 0.9*ysize;\
  7731. var snor_x;var snor_y;\
  7732. if( xstart != xmin){\
  7733.  snor_x = 0.1*xsize;\
  7734. }\
  7735. else\
  7736. {\
  7737.  snor_x = 0;\
  7738.  xstart = xmin;\
  7739. };\
  7740. ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  7741. ctx.lineWidth = 2;\
  7742. ctx.beginPath();\
  7743. ctx.moveTo(xsize,zero_y);\
  7744. ctx.lineTo(zero_x,zero_y);\
  7745. ctx.lineTo(zero_x,0);\
  7746. ctx.stroke();\
  7747. ctx.closePath();\
  7748. ctx.beginPath();\
  7749. ctx.moveTo(zero_x,zero_y);\
  7750. ctx.lineTo(zero_x + 0.25*snor_x,zero_y - 0.1*snor_x);\
  7751. ctx.lineTo(zero_x + 0.5*snor_x,zero_y + 0.1*snor_x);\
  7752. ctx.lineTo(zero_x + 0.75*snor_x,zero_y - 0.1*snor_x);\
  7753. ctx.lineTo(zero_x + snor_x,zero_y);\
  7754. ctx.stroke();\
  7755. ctx.closePath();\
  7756. ctx.beginPath();\
  7757. var num = xstart;\
  7758. var flipflop = 1;\
  7759. var step_x = xmajor*(xsize - zero_x - snor_x)/(xmax - xstart);\
  7760. var txtsize;var txt_marge=step_x - 5;\
  7761. for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  7762.  txtsize = ctx.measureText(num).width;\
  7763.  if( txtsize > txt_marge ){if( flipflop == 1 ){flipflop = 0;}else{flipflop = 1;};};\
  7764.  if( flipflop == 1){\
  7765.   ctx.fillText(num,x - 0.5*txtsize,zero_y+font_size);\
  7766.  }\
  7767.  else\
  7768.  {\
  7769.   ctx.fillText(num,x - 0.5*txtsize,zero_y+2*font_size);\
  7770.  };\
  7771.  num = num + xmajor;\
  7772. };\
  7773. ctx.stroke();\
  7774. ctx.closePath();\
  7775. ctx.lineWidth = 1;\
  7776. ctx.beginPath();\
  7777. for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  7778.   ctx.moveTo(x,zero_y);\
  7779.   ctx.lineTo(x,0);\
  7780. };\
  7781. ctx.stroke();\
  7782. ctx.closePath();\
  7783. if( xminor > 1){\
  7784.  ctx.lineWidth = 0.5;\
  7785.  ctx.beginPath();\
  7786.  ctx.strokeStyle = \"rgba(\"+minorcolor+\",\"+minor_opacity+\")\";\
  7787.  var minor_step_x = step_x / xminor;\
  7788.  var nx;\
  7789.  for(var x = zero_x+snor_x; x < xsize;x = x + step_x){\
  7790.    num = 1;\
  7791.    for(var p = 1 ; p < xminor ; p++){\
  7792.     nx = x + num*minor_step_x;\
  7793.     ctx.moveTo(nx,zero_y);\
  7794.     ctx.lineTo(nx,0);\
  7795.     num++;\
  7796.    };\
  7797.  };\
  7798.  ctx.stroke();\
  7799.  ctx.closePath();\
  7800.  ctx.beginPath();\
  7801.  ctx.lineWidth = 2;\
  7802.  ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  7803.  for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  7804.   ctx.moveTo(x,zero_y);ctx.lineTo(x,zero_y - 12);\
  7805.  };\
  7806.  for(var x = zero_x+snor_x ; x < xsize;x = x + minor_step_x){\
  7807.   ctx.moveTo(x,zero_y);ctx.lineTo(x,zero_y - 6);\
  7808.  };\
  7809.  ctx.stroke();\
  7810.  ctx.closePath();\
  7811.  ctx.lineWidth = 0.5;\
  7812. };\
  7813. xmin = xstart - (xmajor*(zero_x+snor_x)/step_x);\
  7814. if( ystart != ymin){\
  7815.  snor_y = 0.1*ysize;\
  7816. }\
  7817. else\
  7818. {\
  7819.  snor_y = 0;\
  7820.  ystart = ymin;\
  7821. };\
  7822. ctx.lineWidth = 2;\
  7823. ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  7824. ctx.beginPath();\
  7825. ctx.moveTo(zero_x,zero_y);\
  7826. ctx.lineTo(zero_x - 0.1*snor_y,zero_y - 0.25*snor_y);\
  7827. ctx.lineTo(zero_x + 0.1*snor_y,zero_y - 0.5*snor_y);\
  7828. ctx.lineTo(zero_x - 0.1*snor_y,zero_y - 0.75*snor_y);\
  7829. ctx.lineTo(zero_x,zero_y - snor_y);\
  7830. ctx.stroke();\
  7831. ctx.closePath();\
  7832. ctx.beginPath();\
  7833. ctx.lineWidth = 1;\
  7834. num = ystart;\
  7835. var step_y = ymajor*(zero_y - snor_y)/(ymax - ystart);\
  7836. for(var y = zero_y - snor_y ; y > 0; y = y - step_y){\
  7837.  ctx.moveTo(zero_x,y);\
  7838.  ctx.lineTo(xsize,y);\
  7839.  ctx.fillText(num,zero_x - ctx.measureText(num+\" \").width,parseInt(y+0.2*font_size));\
  7840.  num = num + ymajor;\
  7841. };\
  7842. ctx.stroke();\
  7843. ctx.closePath();\
  7844. if( yminor > 1){\
  7845.  ctx.lineWidth = 0.5;\
  7846.  ctx.beginPath();\
  7847.  ctx.strokeStyle = \"rgba(\"+minorcolor+\",\"+minor_opacity+\")\";\
  7848.  var minor_step_y = step_y / yminor;\
  7849.  var ny;\
  7850.  for(var y = 0 ; y < zero_y - snor_y ;y = y + step_y){\
  7851.   num = 1;\
  7852.   for(var p = 1 ;p < yminor;p++){\
  7853.     ny = y + num*minor_step_y;\
  7854.     ctx.moveTo(zero_x,ny);\
  7855.     ctx.lineTo(xsize,ny);\
  7856.     num++;\
  7857.    };\
  7858.  };\
  7859.  ctx.stroke();\
  7860.  ctx.closePath();\
  7861.  ctx.lineWidth = 2;\
  7862.  ctx.beginPath();\
  7863.  ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  7864.  for(var y = zero_y - snor_y ; y > 0 ;y = y - step_y){\
  7865.   ctx.moveTo(zero_x,y);\
  7866.   ctx.lineTo(zero_x+12,y);\
  7867.  };\
  7868.  for(var y = zero_y - snor_y ; y > 0 ;y = y - minor_step_y){\
  7869.   ctx.moveTo(zero_x,y);\
  7870.   ctx.lineTo(zero_x+6,y);\
  7871.  };\
  7872.  ctx.stroke();\
  7873.  ctx.closePath();\
  7874. };\
  7875. ymin = ystart - (ymajor*(ysize - zero_y + snor_y)/step_y);\
  7876. if( typeof(legend%d)  !== 'undefined' ){\
  7877.  ctx.globalAlpha = 1.0;\
  7878.  var y_offset = 2*font_size;\
  7879.  var txt;var txt_size;\
  7880.  var x_offset = xsize - 2*font_size;\
  7881.  var l_length = legend%d.length;var barcolor = new Array();\
  7882.  if( typeof(legendcolors%d) !== 'undefined' ){\
  7883.   for(var p = 0 ; p < l_length ; p++){\
  7884.    barcolor[p] = legendcolors%d[p];\
  7885.   };\
  7886.  }else{\
  7887.   if( barcolor.length == 0 ){\
  7888.    for(var p = 0 ; p < l_length ; p++){\
  7889.     barcolor[p] = stroke_color;\
  7890.    };\
  7891.   };\
  7892.  };\
  7893.  for(var p = 0; p < l_length; p++){\
  7894.   ctx.fillStyle = barcolor[p];\
  7895.   txt = legend%d[p];\
  7896.   txt_size = ctx.measureText(txt).width;\
  7897.   ctx.fillText(legend%d[p],x_offset - txt_size, y_offset);\
  7898.   y_offset = parseInt(y_offset + 1.5*font_size);\
  7899.  };\
  7900. };\
  7901. if( typeof(xaxislabel) !== 'undefined' ){\
  7902.   ctx.fillStyle = \'#000000\';\
  7903.   var txt_size = ctx.measureText(xaxislabel).width + 4 ;\
  7904.   ctx.fillText(xaxislabel,xsize - txt_size, zero_y - 7);\
  7905. };\
  7906. if( typeof(yaxislabel) !== 'undefined'){\
  7907.   ctx.save();\
  7908.   ctx.fillStyle = \'#000000\';\
  7909.   var txt_size = ctx.measureText(yaxislabel).width;\
  7910.   ctx.translate(zero_x+8 + font_size,txt_size+font_size);\
  7911.   ctx.rotate(-0.5*Math.PI);\
  7912.   ctx.fillText(yaxislabel,0,0);\
  7913.   ctx.restore();\
  7914. };\
  7915. };\n",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  7916.     break;
  7917.     case DRAW_NUMBERLINE:
  7918. fprintf(js_include_file,"\n<!-- draw numberline -->\n\
  7919. var draw_numberline = function(canvas_type,use_axis_numbering,x0,x1,xmajor,xminor,y0,y1,linewidth,strokecolor,strokeopacity,fontfamily,fontcolor,precision){\
  7920. var obj = create_canvas%d(canvas_type,xsize,ysize);\
  7921. var ctx = obj.getContext(\"2d\");\
  7922. ctx.lineWidth = linewidth || 1;\
  7923. ctx.strokeStyle = \"rgba(\"+strokecolor+\",\"+strokeopacity+\")\";\
  7924. ctx.font = fontfamily || 'Ariel 12px';\
  7925. var fontsize = parseInt(ctx.font);\
  7926. ctx.fillStyle =  \"rgba(\"+fontcolor+\",\"+strokeopacity+\")\";\
  7927. x1 = x2px(x1);\
  7928. x0 = x2px(x0);\
  7929. y0 = y2px(y0);\
  7930. y1 = y2px(y1);\
  7931. var sub_devision = -1;\
  7932. if( xminor%%2 == 0 ){ sub_devision = xminor/2; };\
  7933. var ybase1 = parseInt( y0 + fontsize + 2 );\
  7934. var ybase2 = parseInt( ybase1 + fontsize + 2 );\
  7935. var yh = Math.abs(parseInt( y0 - 0.3*(y0 -y1)));\
  7936. var ys = Math.abs(parseInt( y0 - 0.6*(y0 -y1)));\
  7937. xmajor = x2px(xmajor) - x2px(0);\
  7938. var i;var len;var p;\
  7939. xminor = xmajor / xminor;\
  7940. ctx.beginPath();\
  7941. for(p = x0 ; p < x1 ; p = p + xmajor){\
  7942.  ctx.moveTo(p,y0);ctx.lineTo(p,y1);i = 0;\
  7943.  for(var s = p ; s < p + xmajor ; s = s + xminor ){\
  7944.   ctx.moveTo(s,y0);\
  7945.   if( sub_devision == i){ ctx.lineTo(s,ys); } else { ctx.lineTo(s,yh); };\
  7946.   i++;\
  7947.  };\
  7948. };\
  7949. ctx.moveTo(p,y0);ctx.lineTo(p,y1);\
  7950. ctx.closePath();\
  7951. ctx.stroke();\
  7952. if( use_axis_numbering >-1 ){\
  7953.  var str = x_strings[use_axis_numbering];\
  7954.  len = str.length;if((len/2+0.5)%%2 == 0){ alert(\"xaxis number unpaired:  text missing ! \");return;};\
  7955.  var corr;var x_nums;var x_text;var flipflop = 0;var off = ybase1;\
  7956.  ctx.beginPath();\
  7957.  if( x_strings_up[use_axis_numbering] == null){\
  7958.   for(var p = 0 ; p < len ; p = p+2){\
  7959.    var x_nums = x2px(eval(str[p]));\
  7960.    var x_text = str[p+1];\
  7961.    corr = ctx.measureText(x_text).width;\
  7962.    if( corr > xmajor){ if(flipflop == 0 ){flipflop = 1; off = ybase2;}else{flipflop = 0; off = ybase1;};};\
  7963.    ctx.fillText(x_text,parseInt(x_nums-0.5*corr),off);\
  7964.   };\
  7965.  }\
  7966.  else\
  7967.  {\
  7968.   for(var p = 0 ; p < len ; p = p+2){\
  7969.    x_nums = x2px(eval(str[p]));\
  7970.    x_text = str[p+1];\
  7971.    corr = ctx.measureText(x_text).width + ybase1 - fontsize;\
  7972.    ctx.save();\
  7973.    ctx.translate(x_nums+0.5*fontsize, corr);\
  7974.    ctx.rotate(-1.5708);\
  7975.    ctx.fillText(x_text,0,0);\
  7976.    ctx.restore();\
  7977.   };\
  7978.  }\
  7979. }\
  7980. else\
  7981. {\
  7982.  var corr;var num;var flipflop = 0;var off = ybase1;\
  7983.  var prec = parseInt(Math.log(precision)/Math.log(10));\
  7984.  for(var p = x0 ; p < x1+xmajor ; p = p+xmajor){\
  7985.   num = (px2x(p)).toFixed(prec);\
  7986.   corr = ctx.measureText(num).width;\
  7987.   if( corr > xmajor){ if(flipflop == 0 ){flipflop = 1; off = ybase2;}else{flipflop = 0; off = ybase1;};};\
  7988.   ctx.fillText(num,parseInt(p - 0.5*corr),off);\
  7989.  };\
  7990. };\
  7991. };",canvas_root_id);
  7992.     break;
  7993.     case DRAW_GRID:/* not used for userdraw */
  7994. fprintf(js_include_file,"\n<!-- draw grid -->\n\
  7995. var draw_grid%d = function(canvas_type,precision,stroke_opacity,xmajor,ymajor,xminor,yminor,tics_length,line_width,stroke_color,axis_color,font_size,font_family,use_axis,use_axis_numbering,use_rotate,angle,use_affine,affine_matrix,use_dashed,dashtype0,dashtype1,font_color,fill_opacity){\
  7996. var obj;if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){obj = document.getElementById(\"wims_canvas%d\"+canvas_type);}else{obj = create_canvas%d(canvas_type,xsize,ysize);};\
  7997. var ctx = obj.getContext(\"2d\");ctx.clearRect(0,0,xsize,ysize);\
  7998. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  7999. ctx.save();\
  8000. if( use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);};\
  8001. if( use_rotate == 1 ){ctx.translate(x2px(0),y2px(0));ctx.rotate(angle*Math.PI/180);ctx.translate(-1*(x2px(0)),-1*(y2px(0)));};\
  8002. var stroke_color = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  8003. ctx.fillStyle = \"rgba(\"+font_color+\",\"+1.0+\")\";\
  8004. var axis_color = \"rgba(\"+axis_color+\",\"+stroke_opacity+\")\";\
  8005. ctx.font = font_family;\
  8006. var barcolor = new Array();\
  8007. var xstep = xsize*xmajor/(xmax - xmin);\
  8008. var ystep = ysize*ymajor/(ymax - ymin);\
  8009. var x2step = xstep / xminor;\
  8010. var y2step = ystep / yminor;\
  8011. var zero_x = x2px(0);;var zero_y = y2px(0);var f_x;var f_y;\
  8012. if(xmin < 0 ){ f_x = -1;}else{ f_x = 1;}\
  8013. if(ymin < 0 ){ f_y = -1;}else{ f_y = 1;}\
  8014. if(line_width%%2 == 1 && typeof(zoom_x_increment) === 'undefined'){ctx.translate(0.5,0.5)};\
  8015. ctx.beginPath();\
  8016. ctx.lineWidth = line_width;\
  8017. ctx.strokeStyle = stroke_color;\
  8018. for(var p = zero_x ; p < xsize; p = p + xstep){\
  8019. ctx.moveTo(p,0);\
  8020. ctx.lineTo(p,ysize);\
  8021. };\
  8022. for(var p = zero_x ; p > 0; p = p - xstep){\
  8023. ctx.moveTo(p,0);\
  8024. ctx.lineTo(p,ysize);\
  8025. };\
  8026. for(var p = zero_y ; p < ysize; p = p + ystep){\
  8027. ctx.moveTo(0,p);\
  8028. ctx.lineTo(xsize,p);\
  8029. };\
  8030. for(var p = zero_y ; p > 0; p = p - ystep){\
  8031. ctx.moveTo(0,p);\
  8032. ctx.lineTo(xsize,p);\
  8033. };\
  8034. if( typeof(xaxislabel) !== 'undefined' ){\
  8035. ctx.save();\
  8036. ctx.font = \"italic \"+font_size+\"px Ariel\";\
  8037. var corr =  parseInt(1.1*ctx.measureText(xaxislabel).width);\
  8038. ctx.fillText(xaxislabel,xsize - corr,zero_y - tics_length - 0.4*font_size);\
  8039. ctx.restore();\
  8040. };\
  8041. if( typeof(yaxislabel) !== 'undefined' ){\
  8042. ctx.save();\
  8043. ctx.font = \"italic \"+font_size+\"px Ariel\";\
  8044. var corr = parseInt(ctx.measureText(yaxislabel).width + font_size);\
  8045. ctx.translate(zero_x+tics_length + font_size,corr);\
  8046. ctx.rotate(-0.5*Math.PI);\
  8047. ctx.fillText(yaxislabel,0,0);\
  8048. ctx.restore();\
  8049. };\
  8050. ctx.stroke();\
  8051. ctx.closePath();\
  8052. if( use_axis == 1 ){\
  8053. ctx.save();\
  8054. ctx.beginPath();\
  8055. ctx.strokeStyle = stroke_color;\
  8056. ctx.lineWidth = 0.6*line_width;\
  8057. for(var p = zero_x ; p < xsize; p = p + x2step){\
  8058.  ctx.moveTo(p,0);\
  8059.  ctx.lineTo(p,ysize);\
  8060. };\
  8061. for(var p = zero_x ; p > 0; p = p - x2step){\
  8062.  ctx.moveTo(p,0);\
  8063.  ctx.lineTo(p,ysize);\
  8064. };\
  8065. for(var p = zero_y ; p < ysize; p = p + y2step){\
  8066.  ctx.moveTo(0,p);\
  8067.  ctx.lineTo(xsize,p);\
  8068. };\
  8069. for(var p = zero_y ; p > 0; p = p - y2step){\
  8070.  ctx.moveTo(0,p);\
  8071.  ctx.lineTo(xsize,p);\
  8072. };\
  8073. ctx.stroke();\
  8074. ctx.closePath();\
  8075. ctx.beginPath();\
  8076. ctx.lineWidth = 2*line_width;\
  8077. ctx.strokeStyle = axis_color;\
  8078. ctx.moveTo(0,zero_y);\
  8079. ctx.lineTo(xsize,zero_y);\
  8080. ctx.moveTo(zero_x,0);\
  8081. ctx.lineTo(zero_x,ysize);\
  8082. ctx.stroke();\
  8083. ctx.closePath();\
  8084. ctx.lineWidth = line_width+0.5;\
  8085. ctx.beginPath();\
  8086. for(var p = zero_x ; p < xsize; p = p + xstep){\
  8087.  ctx.moveTo(p,zero_y-tics_length);\
  8088.  ctx.lineTo(p,zero_y+tics_length);\
  8089. };\
  8090. for(var p = zero_x ; p > 0; p = p - xstep){\
  8091.  ctx.moveTo(p,zero_y-tics_length);\
  8092.  ctx.lineTo(p,zero_y+tics_length);\
  8093. };\
  8094. for(var p = zero_y ; p < ysize; p = p + ystep){\
  8095.  ctx.moveTo(zero_x-tics_length,p);\
  8096.  ctx.lineTo(zero_x+tics_length,p);\
  8097. };\
  8098. for(var p = zero_y ; p > 0; p = p - ystep){\
  8099.  ctx.moveTo(zero_x-tics_length,p);\
  8100.  ctx.lineTo(zero_x+tics_length,p);\
  8101. };\
  8102. for(var p = zero_x ; p < xsize; p = p + x2step){\
  8103.  ctx.moveTo(p,zero_y-0.5*tics_length);\
  8104.  ctx.lineTo(p,zero_y+0.5*tics_length);\
  8105. };\
  8106. for(var p = zero_x ; p > 0; p = p - x2step){\
  8107.  ctx.moveTo(p,zero_y-0.5*tics_length);\
  8108.  ctx.lineTo(p,zero_y+0.5*tics_length);\
  8109. };\
  8110. for(var p = zero_y ; p < ysize; p = p + y2step){\
  8111.  ctx.moveTo(zero_x-0.5*tics_length,p);\
  8112.  ctx.lineTo(zero_x+0.5*tics_length,p);\
  8113. };\
  8114. for(var p = zero_y ; p > 0; p = p - y2step){\
  8115.  ctx.moveTo(zero_x-0.5*tics_length,p);\
  8116.  ctx.lineTo(zero_x+0.5*tics_length,p);\
  8117. };\
  8118. ctx.stroke();\
  8119. ctx.closePath();\
  8120. ctx.restore();\
  8121. };\
  8122. if( use_axis_numbering != -1 ){\
  8123. ctx.save();\
  8124. ctx.fillColor = axis_color;\
  8125. ctx.strokeStyle = axis_color;\
  8126. ctx.lineWidth = 2*line_width;\
  8127. ctx.font = font_family;\
  8128. var shift = zero_y+2*font_size;var flip=0;var skip=0;var corr;var cnt;var disp_cnt;var prec;\
  8129. if( x_strings[use_axis_numbering] != null ){\
  8130.  var str = x_strings[use_axis_numbering];\
  8131.  var len = str.length;if((len/2+0.5)%%2 == 0){ alert(\"xaxis number unpaired:  text missing ! \");return;};\
  8132.  ctx.beginPath();\
  8133.  if( x_strings_up[use_axis_numbering] == null){\
  8134.   for(var p = 0 ; p < len ; p = p+2){\
  8135.    var x_nums = x2px(eval(str[p]));\
  8136.    var x_text = str[p+1];\
  8137.    corr = ctx.measureText(x_text).width;\
  8138.    skip = 1.2*corr/xstep;\
  8139.    if( zero_y+2*font_size > ysize ){shift = ysize - 2*font_size;};\
  8140.    if( skip > 1 ){if(flip == 0 ){flip = 1; shift = shift + font_size;}else{flip = 0; shift = shift - font_size;}};\
  8141.    ctx.fillText(x_text,parseInt(x_nums-0.5*corr),shift);\
  8142.    ctx.moveTo(x_nums,zero_y - tics_length);\
  8143.    ctx.lineTo(x_nums,zero_y + tics_length);\
  8144.   };\
  8145.  }\
  8146.  else\
  8147.  {\
  8148.   for(var p = 0 ; p < len ; p = p+2){\
  8149.    var x_nums = x2px(eval(str[p]));\
  8150.    var x_text = str[p+1];\
  8151.    corr = 2 + tics_length + zero_y + ctx.measureText(x_text).width;\
  8152.    if( corr > ysize ){corr = ysize;};\
  8153.    ctx.save();\
  8154.    ctx.translate(x_nums+0.25*font_size, corr);\
  8155.    ctx.rotate(-1.5708);\
  8156.    ctx.fillText(x_text,0,0);\
  8157.    ctx.restore();\
  8158.    ctx.moveTo(x_nums,zero_y - tics_length);\
  8159.    ctx.lineTo(x_nums,zero_y + tics_length);\
  8160.   };\
  8161.  };\
  8162.  ctx.closePath();\
  8163. }\
  8164. else\
  8165. {\
  8166.  skip = 1;cnt = px2x(zero_x);\
  8167.  prec = Math.log(precision)/(Math.log(10));\
  8168.  var y_basis;if(f_y == 1){ y_basis = ysize }else{ y_basis = zero_y + 1.4*font_size;};\
  8169.  for( var p = zero_x ; p < xsize ; p = p+xstep){\
  8170.   if(skip == 0 ){\
  8171.    disp_cnt = cnt.toFixed(prec);\
  8172.    corr = ctx.measureText(disp_cnt).width;\
  8173.    skip = parseInt(1.2*corr/xstep);\
  8174.    ctx.fillText(disp_cnt,p-0.5*corr,y_basis);\
  8175.   }\
  8176.   else\
  8177.   {\
  8178.    skip--;\
  8179.   };\
  8180.   cnt = cnt + xmajor;\
  8181.  };\
  8182.  cnt = px2x(zero_x);skip = 1;\
  8183.  for( var p = zero_x ; p > 0 ; p = p-xstep){\
  8184.   if(skip == 0 ){\
  8185.    disp_cnt = cnt.toFixed(prec);\
  8186.    corr = ctx.measureText(disp_cnt).width;\
  8187.    skip = parseInt(1.2*corr/xstep);\
  8188.    ctx.fillText(disp_cnt,p-0.5*corr,y_basis);\
  8189.   }\
  8190.   else\
  8191.   {\
  8192.    skip--;\
  8193.   };\
  8194.   cnt = cnt - xmajor;\
  8195.  };\
  8196. };\
  8197. if( y_strings != null ){\
  8198.  var len = y_strings.length;if((len/2+0.5)%%2 == 0){ alert(\"yaxis number unpaired:  text missing ! \");return;};\
  8199.  ctx.beginPath();\
  8200.  for(var p = 0 ; p < len ; p = p+2){\
  8201.   var y_nums = y2px(eval(y_strings[p]));\
  8202.   var y_text = y_strings[p+1];\
  8203.   corr = 2 + tics_length + ctx.measureText(y_text).width;\
  8204.   if( corr > zero_x){corr = parseInt(zero_x+2); }\
  8205.   ctx.fillText(y_text,zero_x - corr,y_nums + 0.5*font_size);\
  8206.   ctx.moveTo(zero_x - tics_length,y_nums);\
  8207.   ctx.lineTo(zero_x + tics_length,y_nums);\
  8208.  };\
  8209.  ctx.closePath();\
  8210. }\
  8211. else\
  8212. {\
  8213.  if(f_x == 1){ corr = 1.5*tics_length; }\
  8214.  cnt = px2y(zero_y);skip = 1;\
  8215.  for( var p = zero_y ; p < ysize ; p = p+ystep){\
  8216.   if(skip == 0 ){\
  8217.    skip = parseInt(1.4*font_size/ystep);\
  8218.    disp_cnt = cnt.toFixed(prec);\
  8219.    if(f_x == -1 ){ corr = parseInt(zero_x - (2 + tics_length + ctx.measureText(disp_cnt).width));};\
  8220.    ctx.fillText(disp_cnt,parseInt(corr),parseInt(p+(0.4*font_size)));\
  8221.   }\
  8222.   else\
  8223.   {\
  8224.    skip--;\
  8225.   };\
  8226.   cnt = cnt - ymajor;\
  8227.  };\
  8228.  corr = 0;cnt = px2y(zero_y);skip = 1;\
  8229.  if(f_x == 1){ corr = 1.5*tics_length; }\
  8230.  for( var p = zero_y ; p > 0 ; p = p-ystep){\
  8231.   if(skip == 0 ){\
  8232.    skip = parseInt(1.4*font_size/ystep);\
  8233.    disp_cnt = cnt.toFixed(prec);\
  8234.    if(f_x == -1 ){corr = parseInt(zero_x - (2 + tics_length + ctx.measureText(disp_cnt).width));};\
  8235.    ctx.fillText(disp_cnt,parseInt(corr),parseInt(p+(0.4*font_size)));\
  8236.   }\
  8237.   else\
  8238.   {\
  8239.    skip--;\
  8240.   };\
  8241.   cnt = cnt + ymajor;\
  8242.  };\
  8243. };\
  8244. ctx.stroke();\
  8245. ctx.restore();\
  8246. };\
  8247. if( typeof(legend0)  !== 'undefined' ){\
  8248. ctx.save();\
  8249. ctx.globalAlpha = 1.0;\
  8250. ctx.font = \"bold \"+font_size+\"px Ariel\";\
  8251. var y_offset = 2*font_size;\
  8252. var txt;var txt_size;\
  8253. var x_offset = xsize - 2*font_size;\
  8254. var l_length = legend0.length;\
  8255. if( typeof(legendcolors0) !== 'undefined' ){\
  8256.  for(var p = 0 ; p < l_length ; p++){\
  8257.    barcolor[p] = legendcolors0[p];\
  8258.  };\
  8259. }\
  8260. else\
  8261. {\
  8262.  if( barcolor.length == 0 ){\
  8263.   for(var p = 0 ; p < l_length ; p++){\
  8264.    barcolor[p] = stroke_color;\
  8265.   };\
  8266.  };\
  8267. };\
  8268. for(var p = 0; p < l_length; p++){\
  8269.  ctx.fillStyle = barcolor[p];\
  8270.  txt = legend0[p];\
  8271.  txt_size = ctx.measureText(txt).width;\
  8272.  ctx.fillText(legend0[p],x_offset - txt_size, y_offset);\
  8273.  y_offset = parseInt(y_offset + 1.5*font_size);\
  8274. };\
  8275. ctx.restore();\
  8276. };\
  8277. if( typeof(barchart_0)  !== 'undefined' ){\
  8278. ctx.save();\
  8279. var num_barcharts = 0;\
  8280. var bar_name = eval('barchart_0');\
  8281. while( typeof(bar_name) !== 'undefined' ){\
  8282.    try{ bar_name = eval('barchart_'+num_barcharts);num_barcharts++;}catch(e){break;};\
  8283. };\
  8284. var bar_width = parseInt(0.8*x2step/(num_barcharts));\
  8285. for(var i=0 ; i< num_barcharts ; i++){\
  8286.  bar_name = eval('barchart_'+i);\
  8287.  var bar_x = new Array();\
  8288.  var bar_y = new Array();\
  8289.  var lb = bar_name.length;\
  8290.  var idx = 0;\
  8291.  var dx = parseInt(0.5*i*bar_width);\
  8292.  for( var p = 0 ; p < lb ; p = p + 3 ){\
  8293.   bar_x[idx] = x2px(bar_name[p]);\
  8294.   bar_y[idx] = y2px(bar_name[p+1]);\
  8295.   barcolor[idx] = bar_name[p+2];\
  8296.   idx++;\
  8297.  };\
  8298.  ctx.globalAlpha = fill_opacity;\
  8299.  for( var p = 0; p < idx ; p++ ){\
  8300.   ctx.beginPath();\
  8301.   ctx.strokeStyle = barcolor[p];\
  8302.   ctx.fillStyle = barcolor[p];\
  8303.   ctx.rect(bar_x[p]-0.4*x2step+dx,bar_y[p],bar_width,zero_y - bar_y[p]);\
  8304.   ctx.fill();\
  8305.   ctx.stroke();\
  8306.   ctx.closePath();\
  8307.  };\
  8308. };\
  8309. ctx.restore();\
  8310. };\
  8311. if( typeof(linegraph_0) !== 'undefined' ){\
  8312. ctx.save();\
  8313. ctx.globalAlpha = 1.0;\
  8314. var i = 0;\
  8315. var line_name = eval('linegraph_'+i);\
  8316. while ( typeof(line_name) !== 'undefined' ){\
  8317.  ctx.strokeStyle = 'rgba('+line_name[0]+','+stroke_opacity+')';\
  8318.  ctx.lineWidth = parseInt(line_name[1]);\
  8319.  if(line_name[2] == \"1\"){\
  8320.   var d1 = parseInt(line_name[3]);\
  8321.   var d2 = parseInt(line_name[4]);\
  8322.   if(ctx.setLineDash){ ctx.setLineDash([d1,d2]); } else { ctx.mozDash = [d1,d2];};\
  8323.  }\
  8324.  else\
  8325.  {\
  8326.  if(ctx.setLineDash){ctx.setLineDash = null;}\
  8327.  if(ctx.mozDash){ctx.mozDash = null;}\
  8328.  };\
  8329.  var data_x = new Array();\
  8330.  var data_y = new Array();\
  8331.  var lb = line_name.length;\
  8332.  var idx = 0;\
  8333.  for( var p = 5 ; p < lb ; p = p + 2 ){\
  8334.   data_x[idx] = x2px(line_name[p]);\
  8335.   data_y[idx] = y2px(line_name[p+1]);\
  8336.   idx++;\
  8337.  };\
  8338.  for( var p = 0; p < idx ; p++){\
  8339.   ctx.beginPath();\
  8340.   ctx.moveTo(data_x[p],data_y[p]);\
  8341.   ctx.lineTo(data_x[p+1],data_y[p+1]);\
  8342.   ctx.stroke();\
  8343.   ctx.closePath();\
  8344.  };\
  8345.  i++;\
  8346.  try{ line_name = eval('linegraph_'+i); }catch(e){ break; }\
  8347. };\
  8348. ctx.restore();\
  8349. };\
  8350. return;\
  8351. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  8352.     break;
  8353.  
  8354.     case DRAW_PIECHART:
  8355. fprintf(js_include_file,"\n<!-- draw piecharts -->\n\
  8356. if( typeof(all_fill_patterns) != 'object' ){ var all_fill_patterns = []; };\
  8357. function draw_piechart(canvas_type,x_center,y_center,radius, data_color_list,fill_opacity,legend_cnt,font_family,use_filled){\
  8358. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  8359.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  8360. }\
  8361. else\
  8362. {\
  8363.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  8364. };\
  8365. var ld = data_color_list.length;\
  8366. var sum = 0;\
  8367. var idx = 0;\
  8368. var font_size = parseInt(font_family.replace(/[^0-9\\.]+/g, \"\"));\
  8369. var colors = new Array();\
  8370. var data = new Array();\
  8371. for(var p = 0;p < ld; p = p + 2){\
  8372.  data[idx] = parseFloat(data_color_list[p]);\
  8373.  sum = sum + data[idx];\
  8374.  colors[idx] = data_color_list[p+1];\
  8375.  idx++;\
  8376. };\
  8377. if( use_filled > 1 ){\
  8378.  var i = 2;\
  8379.  for(var p = 0 ;  p < idx ; p++){\
  8380.   if(i > 5 ){ i = 2; };\
  8381.   var pat = create_Pattern(0,0,i,colors[p]); all_fill_patterns[p] = pat;i++;\
  8382.  };\
  8383. };\
  8384. var ctx = obj.getContext(\"2d\");\
  8385. ctx.save();\
  8386. var angle;\
  8387. var angle_end = 0;\
  8388. var offset = Math.PI / 2;\
  8389. ctx.globalAlpha = fill_opacity;\
  8390. for(var p=0; p < idx; p++){\
  8391.  ctx.beginPath();\
  8392.  ctx.moveTo(x_center,y_center);\
  8393.  angle = Math.PI * (2 * data[p] / sum);\
  8394.  ctx.arc(x_center,y_center, radius, angle_end - offset, angle_end + angle - offset, false);\
  8395.  ctx.lineTo(x_center, y_center);\
  8396.  if( use_filled > 1 ){ ctx.fillStyle = all_fill_patterns[p]; }else{ ctx.fillStyle = colors[p];};\
  8397.  ctx.fill();\
  8398.  ctx.closePath();\
  8399.  angle_end  = angle_end + angle;\
  8400. };\
  8401. if(typeof(legend0) !== 'undefined'){\
  8402.  var legenda = eval(\"legend\"+legend_cnt);\
  8403.  ctx.globalAlpha = 1.0;\
  8404.  ctx.font = font_family;\
  8405.  var y_offset = font_size; \
  8406.  var x_offset = 0;\
  8407.  var txt;var txt_size;\
  8408.  for(var p = 0; p < idx; p++){\
  8409.   ctx.fillStyle = colors[p];\
  8410.   txt = legenda[p];\
  8411.   txt_size = ctx.measureText(txt).width;\
  8412.   if( x_center + radius + txt_size > xsize ){ x_offset =  x_center + radius + txt_size - xsize;} else { x_offset = 0; };\
  8413.   ctx.fillText(txt,x_center + radius - x_offset, y_center - radius + y_offset);\
  8414.   y_offset = parseInt(y_offset + 1.5*font_size);\
  8415.  };\
  8416. };\
  8417. ctx.restore();\
  8418. };",canvas_root_id,canvas_root_id,canvas_root_id);
  8419.  
  8420.     break;
  8421.     case DRAW_JSBOXPLOT:
  8422. fprintf(js_include_file,"\n<!-- draw jsboxplots -->\n\
  8423. if( typeof(all_fill_patterns) != 'object' ){ var all_fill_patterns = []; };\
  8424. function statistics(data){\
  8425. var len = data.length;\
  8426. var min = 10000000;\
  8427. var max = -10000000;\
  8428. var sum = 0;var d;\
  8429. for(var i=0;i<len;i++){\
  8430.  d = data[i];\
  8431.  if(d < min){min = d;}else{if(d > max){max = d;};};\
  8432.  sum+= parseFloat(data[i]);\
  8433. };\
  8434. var mean = parseFloat(sum/len);\
  8435. var variance = 0;\
  8436. for(var i=0;i<len;i++){\
  8437.  d = data[i];\
  8438.  variance += (d - mean)*(d - mean);\
  8439. };\
  8440. variance = parseFloat(variance / len);\
  8441. var std = Math.sqrt(variance);\
  8442. data.sort(function(a,b){return a - b;});\
  8443. var median;var Q1;var Q3;\
  8444. var half = Math.floor(0.5*len);\
  8445. var q1 = Math.floor(0.25*len);\
  8446. var q3 = Math.floor(0.75*len);\
  8447. var half = Math.floor(0.5*len);\
  8448. if(len %%2 == 1){\
  8449.  median = data[half];\
  8450.  Q1 = data[q1];\
  8451.  Q3 = data[q3];\
  8452. }\
  8453. else\
  8454. {\
  8455.  median = (data[half - 1] + data[half] )/2;\
  8456.  Q1 = (data[q1 - 1] + data[q1] )/2;\
  8457.  Q3 = (data[q3 - 1] + data[q3] )/2;\
  8458. };\
  8459. return [min,Q1,median,Q3,max];\
  8460. };");
  8461.     break;
  8462.     case DRAW_BOXPLOT:
  8463. fprintf(js_include_file,"\n<!-- draw boxplots -->\n\
  8464. if( typeof(all_fill_patterns) != 'object' ){ var all_fill_patterns = []; };\
  8465. draw_boxplot = function(canvas_type,xy,hw,cxy,data,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype0,dashtype1){\
  8466. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  8467.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  8468. }\
  8469. else\
  8470. {\
  8471.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  8472. };\
  8473. var ctx = obj.getContext(\"2d\");\
  8474. ctx.clearRect(0,0,xsize,ysize);\
  8475. ctx.save();\
  8476. ctx.lineWidth = line_width;\
  8477. if(line_width%%2 == 1 && typeof(zoom_x_increment) === 'undefined'){ctx.translate(0.5,0.5)};\
  8478. ctx.strokeStyle =  \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  8479. var colors = new Array(2);\
  8480. colors[0] = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";\
  8481. colors[1] = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  8482. if( use_filled > 1 ){\
  8483.   var pat = create_Pattern(0,0,3,colors[0]);\
  8484.   all_fill_patterns[0] = pat;\
  8485.   pat = create_Pattern(0,0,4,colors[1]);\
  8486.   all_fill_patterns[1] = pat;\
  8487. };\
  8488. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{if(ctx.mozDash){ ctx.mozDash = [dashtype0,dashtype1];};};};\
  8489. var hh = 0.25*hw;\
  8490. switch(boxplot_source){\
  8491.  case 1: if( typeof(jsboxplot_data) === 'undefined'){return;};data = statistics(jsboxplot_data);break;\
  8492.  case 2: if( typeof(student_boxplot_data) === 'undefined'){return;};data = statistics(student_boxplot_data);break;\
  8493.  case 3: if( typeof(student_boxplot) === 'undefined'){return;};data = student_boxplot;break;\
  8494.  default: break;\
  8495. };\
  8496. var min,Q1,median,Q3,max;\
  8497. if(xy == 1 ){\
  8498.  min=x2px(data[0]);Q1=x2px(data[1]);median=x2px(data[2]);Q3=x2px(data[3]);max=x2px(data[4]);\
  8499.  hh = Math.abs(y2px(hh) - y2px(ystart));\
  8500.  hw = Math.abs(y2px(hw) - y2px(ystart));\
  8501.  cxy = y2px(cxy);\
  8502.  ctx.beginPath();\
  8503.  ctx.moveTo(min,cxy);\
  8504.  ctx.lineTo(Q1,cxy);\
  8505.  ctx.moveTo(Q3,cxy);\
  8506.  ctx.lineTo(max,cxy);\
  8507.  ctx.moveTo(min,cxy+hh);\
  8508.  ctx.lineTo(min,cxy-hh);\
  8509.  ctx.moveTo(max,cxy+hh);\
  8510.  ctx.lineTo(max,cxy-hh);\
  8511.  ctx.closePath();\
  8512.  ctx.stroke();\
  8513.  ctx.beginPath();\
  8514.  ctx.rect(Q1,cxy-2*hh,median-Q1,hw);\
  8515.  ctx.closePath();\
  8516.  if( use_filled != 0 ){\
  8517.   if( use_filled == 1 ) {ctx.fillStyle = colors[0]; }else{ ctx.fillStyle = all_fill_patterns[0] };\
  8518.   ctx.fill();\
  8519.  };\
  8520.  ctx.stroke();\
  8521.  ctx.beginPath();\
  8522.  ctx.rect(median,cxy-2*hh,Q3-median,hw);\
  8523.  ctx.closePath();\
  8524.  if( use_filled != 0 ){\
  8525.   if( use_filled == 1 ) {ctx.fillStyle = colors[1]; }else{ ctx.fillStyle = all_fill_patterns[1] };\
  8526.   ctx.fill();\
  8527.  };\
  8528.  ctx.stroke();\
  8529. }else{\
  8530.  min=y2px(data[0]);Q1=y2px(data[1]);median=y2px(data[2]);Q3=y2px(data[3]);max=y2px(data[4]);\
  8531.  hh = Math.abs(x2px(hh) - x2px(xstart));\
  8532.  hw = Math.abs(x2px(hw) - x2px(xstart));\
  8533.  cxy = x2px(cxy);\
  8534.  ctx.beginPath();\
  8535.  ctx.moveTo(cxy,min);\
  8536.  ctx.lineTo(cxy,Q1);\
  8537.  ctx.moveTo(cxy,Q3);\
  8538.  ctx.lineTo(cxy,max);\
  8539.  ctx.moveTo(cxy + hh,min);\
  8540.  ctx.lineTo(cxy - hh,min);\
  8541.  ctx.moveTo(cxy + hh,max);\
  8542.  ctx.lineTo(cxy - hh,max);\
  8543.  ctx.closePath;\
  8544.  ctx.stroke();\
  8545.  ctx.beginPath();\
  8546.  ctx.rect(cxy - 2*hh,Q1,hw,median - Q1);\
  8547.  ctx.closePath();\
  8548.  if( use_filled != 0 ){\
  8549.   if( use_filled == 1 ) {ctx.fillStyle = colors[0]; }else{ ctx.fillStyle = all_fill_patterns[0] };\
  8550.   ctx.fill();\
  8551.  };\
  8552.  ctx.stroke();\
  8553.  ctx.beginPath();\
  8554.  ctx.rect(cxy - 2*hh,median,hw,Q3 - median);\
  8555.  ctx.closePath();\
  8556.  if( use_filled != 0 ){\
  8557.   if( use_filled == 1 ) {ctx.fillStyle = colors[1]; }else{ ctx.fillStyle = all_fill_patterns[1] };\
  8558.   ctx.fill();\
  8559.  };\
  8560.  ctx.stroke();\
  8561. };\
  8562. ctx.restore();};",canvas_root_id,canvas_root_id,canvas_root_id);
  8563.     break;
  8564.     case DRAW_ARCS:
  8565. fprintf(js_include_file,"\n<!-- draw arcs -->\n\
  8566. if( typeof(all_fill_patterns) != 'object' ){ var all_fill_patterns = []; };\
  8567. var draw_arc = function(ctx,xc,yc,r,start,end,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_affine,affine_matrix){\
  8568. ctx.save();\
  8569. if( use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{if(ctx.mozDash){ ctx.mozDash = [dashtype0,dashtype1];};};};\
  8570. if( use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);};\
  8571. if( use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);};\
  8572. if(end < start){var tmp = end;end = start;start=tmp;};\
  8573. start = 360 - start;\
  8574. end = 360 - end;\
  8575. ctx.lineWidth = line_width;\
  8576. if(line_width%%2 == 1 && typeof(zoom_x_increment) === 'undefined'){ctx.translate(0.5,0.5)};\
  8577. ctx.strokeStyle =  \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  8578. var color = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";\
  8579. if(use_filled > 1 ){ if(! all_fill_patterns[use_filled] ){ var pat = create_Pattern(0,0,use_filled,color); all_fill_patterns[use_filled] = pat;};ctx.fillStyle = all_fill_patterns[use_filled]; } else { ctx.fillStyle = color;};\
  8580. ctx.beginPath();\
  8581. ctx.moveTo(xc,yc);\
  8582. ctx.arc(xc, yc, r, start*(Math.PI / 180), end*(Math.PI / 180),true);\
  8583. ctx.lineTo(xc,yc);\
  8584. ctx.closePath();\
  8585. if( use_filled != 0 ){ctx.fill();};\
  8586. ctx.stroke();\
  8587. ctx.restore();\
  8588. };");
  8589.  
  8590.     break;
  8591.     case DRAW_CENTERSTRING:
  8592. fprintf(js_include_file,"\n<!-- draw centerstring -->\n\
  8593. var draw_centerstring = function(canvas_type,y,font_family,stroke_color,stroke_opacity,text){\
  8594. var obj;\
  8595. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  8596.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  8597. }\
  8598. else\
  8599. {\
  8600.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  8601. };\
  8602. var ctx = obj.getContext(\"2d\");\
  8603. ctx.save();\
  8604. ctx.clearRect(0,0,xsize,ysize);\
  8605. ctx.font = font_family;\
  8606. ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  8607. var stringwidth = ctx.measureText(text).width;\
  8608. var x = parseInt((xsize - stringwidth)/2);if( x < 0 ){x = 0;};\
  8609. ctx.fillText(text,x,y2px(y));\
  8610. ctx.restore();\
  8611. return;\
  8612. };",canvas_root_id,canvas_root_id,canvas_root_id);
  8613.     break;
  8614.     case DRAW_TEXTS:
  8615. fprintf(js_include_file,"\n<!-- draw text -->\n\
  8616. var draw_text = function(canvas_type,x,y,font_size,font_family,stroke_color,stroke_opacity,angle2,text,use_rotate,angle,use_affine,affine_matrix,use_offset){\
  8617. var obj;\
  8618. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  8619.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  8620. }\
  8621. else\
  8622. {\
  8623.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  8624. };\
  8625. var ctx = obj.getContext(\"2d\");\
  8626. if( font_family != 'null' ){\
  8627.  ctx.font = font_family;\
  8628. }\
  8629. else\
  8630. {\
  8631.  ctx.font = font_size+'px Ariel';\
  8632. };\
  8633. if( use_offset == 3 ){if(angle2 < 0 ){ y = y + 0.8*font_size; x = x + (Math.cos(angle2))*font_size; }else{y = y - 0.8*font_size; x = x + (Math.sin(angle2))*font_size;};};\
  8634. if(angle2 == 0 && angle != 0){\
  8635.  ctx.save();\
  8636.  if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  8637.  if(use_rotate == 1 ){\
  8638.  ctx.rotate(angle*Math.PI/180);};\
  8639.  ctx.restore();\
  8640. };\
  8641. ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  8642. if(angle2 != 0){\
  8643.  ctx.save();\
  8644.  ctx.translate(x,y);\
  8645.  ctx.rotate((360-angle2)*(Math.PI / 180));\
  8646.  ctx.fillText(text,0,0);\
  8647.  ctx.restore();\
  8648. }\
  8649. else\
  8650. {\
  8651.  ctx.fillText(text,x,y);\
  8652. };\
  8653. return;\
  8654. };",canvas_root_id,canvas_root_id,canvas_root_id);
  8655.     break;
  8656.     case DRAW_CURVE:
  8657. fprintf(js_include_file,"\n<!-- draw curve -->\n\
  8658. var draw_curve = function(canvas_type,type,x_points,y_points,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,use_rotate,angle,use_affine,affine_matrix){\
  8659. var obj;\
  8660. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  8661.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  8662. }\
  8663. else\
  8664. {\
  8665.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  8666. };\
  8667. var ctx = obj.getContext(\"2d\");\
  8668. ctx.save();\
  8669. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  8670. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  8671. ctx.beginPath();ctx.lineWidth = line_width;\
  8672. if(line_width%%2 == 1 && typeof(zoom_x_increment) === 'undefined'){ctx.translate(0.5,0.5)};\
  8673. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  8674. ctx.strokeStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  8675. ctx.moveTo(x2px(x_points[0]),y2px(y_points[0]));\
  8676. for(var p = 1 ; p < x_points.length ; p++){\
  8677.  if( y2px(y_points[p]) > -5 && y2px(y_points[p]) < ysize+5 ){\
  8678.  ctx.lineTo(x2px(x_points[p]),y2px(y_points[p]));\
  8679.  }\
  8680.  else\
  8681.  {\
  8682.   ctx.stroke();\
  8683.   ctx.beginPath();\
  8684.   p++;\
  8685.   ctx.moveTo(x2px(x_points[p]),y2px(y_points[p]));\
  8686.  };\
  8687. };\
  8688. ctx.stroke();\
  8689. ctx.restore();\
  8690. };",canvas_root_id,canvas_root_id,canvas_root_id);
  8691.     break;
  8692.  
  8693.     case DRAW_INPUTS:
  8694. fprintf(js_include_file,"\n<!-- draw input fields -->\n\
  8695. var draw_inputs = function(root_id,input_cnt,x,y,size,readonly,style,value,use_offset){\
  8696. var canvas_div = document.getElementById(\"canvas_div\"+root_id);\
  8697. var input = document.createElement(\"input\");\
  8698. input.setAttribute(\"id\",\"canvas_input\"+input_cnt);\
  8699. input.setAttribute(\"style\",\"position:absolute;left:\"+x+\"px;top:\"+y+\"px;\"+style);\
  8700. input.setAttribute(\"size\",size);\
  8701. input.setAttribute(\"value\",value);\
  8702. if( readonly == 0 || wims_status == \"done\" ){ input.setAttribute(\"readonly\",\"readonly\");if( wims_status == \"done\" ){input.setAttribute(\"value\",\"\");};};\
  8703. canvas_div.appendChild(input);\
  8704. if(use_offset != 0 ){ center_input('canvas_input'+input_cnt,x,y,style);};\
  8705. };\
  8706. function center_input(id,x,y,style){\
  8707. var inp = document.getElementById(id);\
  8708. var pos = inp.getBoundingClientRect();\
  8709. var center_x = parseInt(x - 0.5*(pos.width));\
  8710. var center_y = parseInt(y - 0.5*(pos.height));\
  8711. try{ inp.setAttribute(\"style\",\"position:absolute;left:\"+center_x+\"px;top:\"+center_y+\"px;\"+style );}\
  8712. catch(e){return;};\
  8713. };");
  8714.     break;
  8715.  
  8716.     case DRAW_TEXTAREAS:
  8717. fprintf(js_include_file,"\n<!-- draw text area inputfields -->\n\
  8718. var draw_textareas = function(root_id,input_cnt,x,y,cols,rows,readonly,style,value){\
  8719. var canvas_div = document.getElementById(\"canvas_div\"+root_id);\
  8720. var textarea = document.createElement(\"textarea\");\
  8721. textarea.setAttribute(\"id\",\"canvas_input\"+input_cnt);\
  8722. textarea.setAttribute(\"style\",\"position:absolute;left:\"+x+\"px;top:\"+y+\"px;\"+style);\
  8723. textarea.setAttribute(\"cols\",cols);\
  8724. textarea.setAttribute(\"rows\",rows);\
  8725. textarea.value = value;\
  8726. if( readonly == 0 || wims_status == \"done\" ){ textarea.setAttribute(\"readonly\",\"readonly\");if( wims_status == \"done\" ){textarea.value=\"\";};};\
  8727. canvas_div.appendChild(textarea);};");
  8728.     break;
  8729.  
  8730. case DRAW_PIXELS:
  8731. fprintf(js_include_file,"\n<!-- draw pixel -->\n\
  8732. var draw_setpixel = function(x,y,color,opacity,pixelsize){\
  8733. var idx = 2000+Math.ceil(1000*(Math.random()));\
  8734. var canvas = create_canvas%d(idx,xsize,ysize);\
  8735. var d = 0.5*pixelsize;\
  8736. var ctx = canvas.getContext(\"2d\");\
  8737. if(pixelsize%%2 == 1){ ctx.translate(0.5,0.5);};\
  8738. ctx.fillStyle = \"rgba(\"+color+\",\"+opacity+\")\";\
  8739. ctx.clearRect(0,0,xsize,ysize);\
  8740. for(var p=0; p<x.length;p++){\
  8741.  ctx.fillRect( x2px(x[p]) - d, y2px(y[p]) - d , pixelsize, pixelsize );\
  8742. };\
  8743. ctx.fill();ctx.stroke();\
  8744. };",canvas_root_id);
  8745. break;
  8746.  
  8747. case DRAW_CLOCK:
  8748. fprintf(js_include_file,"\n<!-- begin command clock -->\n\
  8749. var clock_canvas = create_canvas%d(%d,xsize,ysize);\
  8750. var clock_ctx = clock_canvas.getContext(\"2d\");\
  8751. var clock = function(xc,yc,radius,H,M,S,type,interaction,h_color,m_color,s_color,bg_color,fg_color){\
  8752. clock_ctx.clearRect(xc - radius,yc - radius,2*radius,2*radius);\
  8753. clock_ctx.save();\
  8754. clock_ctx.globalAlpha = clock_bg_opacity;\
  8755. this.type = type || 0;\
  8756. this.interaction = interaction || 0;\
  8757. this.H = H;\
  8758. this.M = M;\
  8759. this.S = S;\
  8760. this.xc = xc || xsize/2;\
  8761. this.yc = yc || ysize/2;\
  8762. this.radius = radius || xsize/4;\
  8763. var font_size = parseInt(0.2*this.radius);\
  8764. this.H_color = h_color || \"black\";\
  8765. this.M_color = m_color || \"black\";\
  8766. this.S_color = s_color || \"black\";\
  8767. this.fg_color = fg_color || \"black\";\
  8768. this.bg_color = bg_color || \"white\";\
  8769. clock_ctx.translate(this.xc,this.yc);\
  8770. clock_ctx.beginPath();\
  8771. clock_ctx.arc(0,0,this.radius,0,2*Math.PI,false);\
  8772. clock_ctx.fillStyle = this.bg_color;\
  8773. clock_ctx.fill();\
  8774. clock_ctx.closePath();\
  8775. clock_ctx.beginPath();\
  8776. clock_ctx.font = font_size+\"px Arial\";\
  8777. clock_ctx.fillStyle = this.fg_color;\
  8778. clock_ctx.textAlign = \"center\";\
  8779. clock_ctx.textBaseline = 'middle';\
  8780. var angle;var x1,y1,x2,y2;\
  8781. var angle_cos;var angle_sin;\
  8782. clock_ctx.globalAlpha = clock_fg_opacity;\
  8783. switch(type){\
  8784. case 0:clock_ctx.beginPath();\
  8785. for(var p = 1; p <= 12 ; p++){\
  8786.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 12));\
  8787.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 12));\
  8788.  x1 = 0.8*angle_cos;y1 = 0.8*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  8789.  clock_ctx.moveTo(x1,y1);\
  8790.  clock_ctx.lineTo(x2,y2);\
  8791. };\
  8792. for(var p = 1; p <= 60 ; p++){\
  8793.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 60));\
  8794.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 60));\
  8795.  x1 = 0.9*angle_cos;y1 = 0.9*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  8796.  clock_ctx.moveTo(x1,y1);\
  8797.  clock_ctx.lineTo(x2,y2);\
  8798. };\
  8799. clock_ctx.closePath();\
  8800. clock_ctx.stroke();\
  8801. break;\
  8802. case 1:\
  8803. for(var p= 1; p <= 12 ; p++){ angle = (p - 3) * (Math.PI * 2) / 12;x1 = 0.9*this.radius*Math.cos(angle);y1 = 0.9*this.radius*Math.sin(angle);clock_ctx.fillText(p, x1, y1);};break;\
  8804. case 2:\
  8805. for(var p= 1; p <= 12 ; p++){ angle = (p - 3) * (Math.PI * 2) / 12;x1 = 0.8*this.radius*Math.cos(angle);y1 = 0.8*this.radius*Math.sin(angle);clock_ctx.fillText(p, x1, y1);};\
  8806. clock_ctx.beginPath();\
  8807. for(var p = 1; p <= 12 ; p++){\
  8808.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 12));\
  8809.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 12));\
  8810.  x1 = 0.9*angle_cos;y1 = 0.9*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  8811.  clock_ctx.moveTo(x1,y1);\
  8812.  clock_ctx.lineTo(x2,y2);\
  8813. };\
  8814. for(var p = 1; p <= 60 ; p++){\
  8815.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 60));\
  8816.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 60));\
  8817.  x1 = 0.95*angle_cos;y1 = 0.95*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  8818.  clock_ctx.moveTo(x1,y1);\
  8819.  clock_ctx.lineTo(x2,y2);\
  8820. };\
  8821. clock_ctx.closePath();\
  8822. clock_ctx.stroke();\
  8823. break;\
  8824. };\
  8825. angle = (this.H - 3 + this.M/60 ) * 2 * Math.PI / 12;\
  8826. clock_ctx.rotate(angle);\
  8827. clock_ctx.beginPath();\
  8828. clock_ctx.moveTo(-3, -2);\
  8829. clock_ctx.lineTo(-3, 2);\
  8830. clock_ctx.lineTo(this.radius * 0.6, 1);\
  8831. clock_ctx.lineTo(this.radius  * 0.6, -1);\
  8832. clock_ctx.fillStyle = this.H_color;\
  8833. clock_ctx.fill();\
  8834. clock_ctx.rotate(-angle);\
  8835. angle = (this.M - 15 + this.S/60) * 2 * Math.PI / 60;\
  8836. clock_ctx.rotate(angle);\
  8837. clock_ctx.beginPath();\
  8838. clock_ctx.moveTo(-3, -2);\
  8839. clock_ctx.lineTo(-3, 2);\
  8840. clock_ctx.lineTo(this.radius  * 0.8, 1);\
  8841. clock_ctx.lineTo(this.radius  * 0.8, -1);\
  8842. clock_ctx.fillStyle = this.M_color;\
  8843. clock_ctx.fill();\
  8844. clock_ctx.rotate(-angle);\
  8845. angle = (this.S - 15) * 2 * Math.PI / 60;\
  8846. clock_ctx.rotate(angle);\
  8847. clock_ctx.beginPath();\
  8848. clock_ctx.moveTo(0,0);\
  8849. clock_ctx.lineTo(this.radius  * 0.9, 1);\
  8850. clock_ctx.lineTo(this.radius  * 0.9, -1);\
  8851. clock_ctx.strokeStyle = this.S_color;\
  8852. clock_ctx.stroke();\
  8853. clock_ctx.restore();\
  8854. };",canvas_root_id,CLOCK_CANVAS);
  8855. break;
  8856.  
  8857. case DRAW_LATTICE:
  8858. fprintf(js_include_file,"\n<!-- draw lattice -->\n\
  8859. var draw_lattice = function(canvas_type,line_width,x0,y0,dx1,dy1,dx2,dy2,n1,n2,fill_color,fill_opacity,stroke_color,stroke_opacity,use_rotate,angle,use_affine,affine_matrix,use_filled){\
  8860. var obj;\
  8861. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  8862.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  8863. }\
  8864. else\
  8865. {\
  8866.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  8867. };\
  8868. var ctx = obj.getContext(\"2d\");\
  8869. ctx.save();\
  8870. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  8871. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  8872. var color = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";\
  8873. if(use_filled > 1 ){ if(! all_fill_patterns[use_filled] ){ var pat = create_Pattern(0,0,use_filled,color); all_fill_patterns[use_filled] = pat;};ctx.fillStyle = all_fill_patterns[use_filled]; } else { ctx.fillStyle = color;};\
  8874. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  8875. var radius = line_width;\
  8876. var x = 0;\
  8877. var y = 0;\
  8878. var x_step_px = xsize/(xmax-xmin);\
  8879. var y_step_px = ysize/(ymax-ymin);\
  8880. var xv1 = dx1*x_step_px;\
  8881. var yv1 = dy1*y_step_px;\
  8882. var xv2 = dx2*x_step_px;\
  8883. var yv2 = dy2*y_step_px;\
  8884. for(var p = 0; p < n1 ;p++){\
  8885.  x = p*xv1 + x0;\
  8886.  y = p*yv1 + y0;\
  8887.  for(var c = 0; c < n2 ; c++){\
  8888.   ctx.beginPath();\
  8889.   ctx.arc(x+c*xv2,y+c*yv2,radius,0,2*Math.PI,false);\
  8890.   ctx.fill();\
  8891.   ctx.stroke();\
  8892.   ctx.closePath();\
  8893.  };\
  8894. };\
  8895. ctx.restore();\
  8896. return;\
  8897. };",canvas_root_id,canvas_root_id,canvas_root_id);
  8898.     break;
  8899. case DRAW_XYLOGSCALE:
  8900. fprintf(js_include_file,"\n<!-- draw xylogscale -->\n\
  8901. var draw_grid%d = function(canvas_type,line_width,major_color,minor_color,major_opacity,minor_opacity,font_size,font_family,font_color,use_axis_numbering,precision){\
  8902. var obj;\
  8903. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  8904.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  8905. }\
  8906. else\
  8907. {\
  8908.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  8909. };\
  8910. var ctx = obj.getContext(\"2d\");\
  8911. ctx.clearRect(0,0,xsize,ysize);\
  8912. ctx.save();\
  8913. var xmarge;var ymarge;var x_e;var y_e;var num;var corr;var xtxt;var ytxt;\
  8914. var x_min = Math.log(xmin)/Math.log(xlogbase);\
  8915. var x_max = Math.log(xmax)/Math.log(xlogbase);\
  8916. var y_min = Math.log(ymin)/Math.log(ylogbase);\
  8917. var y_max = Math.log(ymax)/Math.log(ylogbase);\
  8918. if(use_axis_numbering != -1){\
  8919.  ctx.font = font_family;\
  8920.  xmarge = ctx.measureText(ylogbase+'^'+y_max.toFixed(0)+' ').width;\
  8921.  ymarge = parseInt(1.5*font_size);\
  8922.  ctx.save();\
  8923.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\
  8924.  ctx.rect(0,0,xmarge,ysize);\
  8925.  ctx.rect(0,ysize-ymarge,xsize,ysize);\
  8926.  ctx.fill();\
  8927.  ctx.restore();\
  8928. }else{xmarge = 0;ymarge = 0;};\
  8929. if( typeof(xaxislabel) !== 'undefined' ){\
  8930.  ctx.save();\
  8931.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  8932.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  8933.  corr =  ctx.measureText(xaxislabel).width;\
  8934.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\
  8935.  ctx.restore();\
  8936. };\
  8937. if( typeof(yaxislabel) !== 'undefined' ){\
  8938.  ctx.save();\
  8939.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  8940.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  8941.  corr = ctx.measureText(yaxislabel).width;\
  8942.  ctx.translate(xmarge+font_size,corr+font_size);\
  8943.  ctx.rotate(-0.5*Math.PI);\
  8944.  ctx.fillText(yaxislabel,0,0);\
  8945.  ctx.restore();\
  8946. };\
  8947. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  8948. ctx.lineWidth = line_width;\
  8949. for(var p = x_min; p <= x_max ; p++){\
  8950.  num = Math.pow(xlogbase,p);\
  8951.  for(var i = 1 ; i < xlogbase ; i++){\
  8952.   x_e = x2px(i*num);\
  8953.   if( i == 1 ){\
  8954.    ctx.lineWidth = line_width;\
  8955.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  8956.    if( use_axis_numbering != -1 && p > x_min){\
  8957.      xtxt = xlogbase+'^'+p.toFixed(0);\
  8958.      corr = 0.5*(ctx.measureText(xtxt).width);\
  8959.      ctx.fillText(xtxt,x_e - corr,ysize - 4);\
  8960.    };\
  8961.   }else{\
  8962.    ctx.lineWidth = 0.2*line_width;\
  8963.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  8964.   };\
  8965.   if( x_e >= xmarge ){\
  8966.    ctx.beginPath();\
  8967.    ctx.moveTo(x_e,0);\
  8968.    ctx.lineTo(x_e,ysize - ymarge);\
  8969.    ctx.stroke();\
  8970.    ctx.closePath();\
  8971.   };\
  8972.  };\
  8973. };\
  8974. for(var p = y_min; p <= y_max ; p++){\
  8975.  num = Math.pow(ylogbase,p);\
  8976.  for(var i = 1 ; i < ylogbase ; i++){\
  8977.   y_e = y2px(i*num);\
  8978.   if( i == 1 ){\
  8979.    ctx.lineWidth = line_width;\
  8980.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  8981.    if( use_axis_numbering != -1 && p > y_min){\
  8982.     ctx.fillText(ylogbase+'^'+p.toFixed(0),0,y_e);\
  8983.    };\
  8984.   }else{\
  8985.    ctx.lineWidth = 0.2*line_width;\
  8986.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  8987.   };\
  8988.   ctx.beginPath();\
  8989.   ctx.moveTo(xmarge,y_e);\
  8990.   ctx.lineTo(xsize,y_e);\
  8991.   ctx.stroke();\
  8992.   ctx.closePath();\
  8993.  };\
  8994. };\
  8995. ctx.restore();\
  8996. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  8997.     break;
  8998.  
  8999. case DRAW_XLOGSCALE:
  9000. fprintf(js_include_file,"\n<!-- draw xlogscale -->\n\
  9001. var draw_grid%d = function(canvas_type,line_width,major_color,minor_color,major_opacity,minor_opacity,font_size,font_family,font_color,use_axis_numbering,ymajor,yminor,precision){\
  9002. var obj;\
  9003. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  9004.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  9005. }\
  9006. else\
  9007. {\
  9008.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  9009. };\
  9010. var ctx = obj.getContext(\"2d\");\
  9011. ctx.clearRect(0,0,xsize,ysize);\
  9012. ctx.save();\
  9013. ctx.lineWidth = line_width;\
  9014. var prec = Math.log(precision)/Math.log(10);\
  9015. var x_min = Math.log(xmin)/Math.log(xlogbase);\
  9016. var x_max = Math.log(xmax)/Math.log(xlogbase);\
  9017. var y_min = 0;var y_max = ysize;var x_e;var corr;\
  9018. var xtxt;var ytxt;var num;var xmarge;var ymarge;\
  9019. if(use_axis_numbering != -1){\
  9020.  ctx.font = font_family;\
  9021.  xmarge = ctx.measureText(ymax.toFixed(prec)+' ').width;\
  9022.  ymarge = parseInt(1.5*font_size);\
  9023.  ctx.save();\
  9024.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\
  9025.  ctx.rect(0,0,xmarge,ysize);\
  9026.  ctx.rect(0,ysize-ymarge,xsize,ysize);\
  9027.  ctx.fill();\
  9028.  ctx.restore();\
  9029. }else{xmarge = 0;ymarge = 0;};\
  9030. if( typeof(xaxislabel) !== 'undefined' ){\
  9031.  ctx.save();\
  9032.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  9033.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  9034.  corr =  ctx.measureText(xaxislabel).width;\
  9035.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\
  9036.  ctx.restore();\
  9037. };\
  9038. if( typeof(yaxislabel) !== 'undefined' ){\
  9039.  ctx.save();\
  9040.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  9041.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  9042.  corr = ctx.measureText(yaxislabel).width;\
  9043.  ctx.translate(xmarge+font_size,corr+font_size);\
  9044.  ctx.rotate(-0.5*Math.PI);\
  9045.  ctx.fillText(yaxislabel,0,0);\
  9046.  ctx.restore();\
  9047. };\
  9048. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  9049. ctx.lineWidth = line_width;\
  9050. for(var p = x_min; p <= x_max ; p++){\
  9051.  num = Math.pow(xlogbase,p);\
  9052.  for(var i = 1 ; i < xlogbase ; i++){\
  9053.   x_e = x2px(i*num);\
  9054.   if( i == 1 ){\
  9055.     ctx.lineWidth = line_width;\
  9056.     ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  9057.    if( use_axis_numbering != -1 && p > x_min ){\
  9058.      xtxt = xlogbase+'^'+p.toFixed(0);\
  9059.      corr = 0.5*(ctx.measureText(xtxt).width);\
  9060.      ctx.fillText(xtxt,x_e - corr,ysize - 4);\
  9061.    };\
  9062.   }else{\
  9063.    ctx.lineWidth = 0.2*line_width;\
  9064.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  9065.   };\
  9066.   if( x_e >= xmarge ){\
  9067.    ctx.beginPath();\
  9068.    ctx.moveTo(x_e,0);\
  9069.    ctx.lineTo(x_e,ysize - ymarge);\
  9070.    ctx.stroke();\
  9071.    ctx.closePath();\
  9072.   };\
  9073.  };\
  9074. };\
  9075. var stepy = Math.abs(y2px(ymajor) - y2px(0));\
  9076. var minor_step = stepy / yminor;\
  9077. for(var y = 0 ; y < ysize - stepy ; y = y + stepy){\
  9078.  ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  9079.  ctx.lineWidth = line_width;\
  9080.  ctx.beginPath();\
  9081.  ctx.moveTo(xmarge,y);\
  9082.  ctx.lineTo(xsize,y);\
  9083.  ctx.stroke();\
  9084.  ctx.closePath();\
  9085.  if( use_axis_numbering != -1){\
  9086.   ytxt = (px2y(y)).toFixed(prec);\
  9087.   ctx.fillText( ytxt,0 ,y + 0.5*font_size );\
  9088.  };\
  9089.  for(var dy = 1 ; dy < yminor ; dy++){\
  9090.   ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  9091.   ctx.lineWidth = 0.2*line_width;\
  9092.   ctx.beginPath();\
  9093.   ctx.moveTo(xmarge,y+dy*minor_step);\
  9094.   ctx.lineTo(xsize,y+dy*minor_step);\
  9095.   ctx.stroke();\
  9096.   ctx.closePath();\
  9097.  };\
  9098. };\
  9099. ctx.restore();\
  9100. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  9101.     break;
  9102. case DRAW_YLOGSCALE:
  9103. fprintf(js_include_file,"\n<!-- draw ylogscale -->\n\
  9104. var draw_grid%d = function(canvas_type,line_width,major_color,minor_color,major_opacity,minor_opacity,font_size,font_family,font_color,use_axis_numbering,xmajor,xminor,precision){\
  9105. var obj;\
  9106. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  9107.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  9108. }\
  9109. else\
  9110. {\
  9111.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  9112. };\
  9113. var ctx = obj.getContext(\"2d\");\
  9114. ctx.clearRect(0,0,xsize,ysize);\
  9115. ctx.save();\
  9116. ctx.lineWidth = line_width;\
  9117. var y_min = Math.log(ymin)/Math.log(ylogbase);\
  9118. var y_max = Math.log(ymax)/Math.log(ylogbase);\
  9119. var x_min = 0;var x_max = xsize;var y_s;var y_e;var num;var xmarge;var ymarge;\
  9120. if(use_axis_numbering != -1){\
  9121.  ctx.font = font_family;\
  9122.  xmarge = ctx.measureText(ylogbase+\"^\"+y_max.toFixed(0)+' ').width;\
  9123.  ymarge = 2*font_size;\
  9124.  ctx.save();\
  9125.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\
  9126.  ctx.rect(0,0,xmarge,ysize);\
  9127.  ctx.rect(0,ysize-ymarge,xsize,ysize);\
  9128.  ctx.fill();\
  9129.  ctx.restore();\
  9130. }else{xmarge = 0;ymarge = 0;};\
  9131. if( typeof(xaxislabel) !== 'undefined' ){\
  9132.  ctx.save();\
  9133.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  9134.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  9135.  corr =  ctx.measureText(xaxislabel).width;\
  9136.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\
  9137.  ctx.restore();\
  9138. };\
  9139. if( typeof(yaxislabel) !== 'undefined' ){\
  9140.  ctx.save();\
  9141.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  9142.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  9143.  corr = ctx.measureText(yaxislabel).width;\
  9144.  ctx.translate(xmarge+font_size,corr+font_size);\
  9145.  ctx.rotate(-0.5*Math.PI);\
  9146.  ctx.fillText(yaxislabel,0,0);\
  9147.  ctx.restore();\
  9148. };\
  9149. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  9150. ctx.lineWidth = line_width;\
  9151. for(var p = y_min; p <= y_max ; p++){\
  9152.  num = Math.pow(ylogbase,p);\
  9153.  for(var i = 1 ; i < ylogbase ; i++){\
  9154.   y_e = y2px(i*num);\
  9155.   if( i == 1 ){\
  9156.    ctx.lineWidth = line_width;\
  9157.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  9158.    if( use_axis_numbering != -1 && p > y_min){\
  9159.     ctx.fillText(ylogbase+'^'+p.toFixed(0),0,y_e);\
  9160.    };\
  9161.   }else{\
  9162.    ctx.lineWidth = 0.2*line_width;\
  9163.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  9164.   };\
  9165.   ctx.beginPath();\
  9166.   ctx.moveTo(xmarge,y_e);\
  9167.   ctx.lineTo(xsize,y_e);\
  9168.   ctx.stroke();\
  9169.   ctx.closePath();\
  9170.  };\
  9171. };\
  9172. var stepx = Math.abs(x2px(xmajor) - x2px(0));\
  9173. var minor_step = stepx / xminor;\
  9174. var prec = Math.log(precision)/Math.log(10);\
  9175. var xtxt;var corr;var flip = 0;\
  9176. for(var x = stepx ; x < xsize ; x = x + stepx){\
  9177.  ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  9178.  ctx.lineWidth = line_width;\
  9179.  ctx.beginPath();\
  9180.  ctx.moveTo(x,ysize-ymarge);\
  9181.  ctx.lineTo(x,0);\
  9182.  ctx.stroke();\
  9183.  ctx.closePath();\
  9184.  if( use_axis_numbering != -1){\
  9185.   xtxt = (px2x(x)).toFixed(prec);\
  9186.   corr = 0.5*(ctx.measureText(xtxt).width);\
  9187.   if(flip == 0 ){flip = 1;ctx.fillText( xtxt,x - corr ,ysize - 0.2*font_size );}else{\
  9188.   flip = 0;ctx.fillText( xtxt,x - corr ,ysize - 1.2*font_size );};\
  9189.  };\
  9190.  for(var dx = 1 ; dx < xminor ; dx++){\
  9191.   ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  9192.   ctx.lineWidth = 0.2*line_width;\
  9193.   ctx.beginPath();\
  9194.   ctx.moveTo(x+dx*minor_step,ysize - ymarge);\
  9195.   ctx.lineTo(x+dx*minor_step,0);\
  9196.   ctx.stroke();\
  9197.   ctx.closePath();\
  9198.  };\
  9199. };\
  9200. ctx.restore();\
  9201. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  9202.     break;
  9203.  
  9204.     default:break;
  9205.    }
  9206.   }
  9207.  }
  9208.   return;
  9209. }
  9210.  
  9211. void check_string_length(int L){
  9212.  if( L > MAX_BUFFER-1){
  9213.   canvas_error("problem with your arguments to command...");
  9214.  }
  9215.  return;
  9216. }
  9217.  
  9218.  
  9219. int get_token(FILE *infile){
  9220.         int     c,i=0;
  9221.         char    temp[MAX_INT], *input_type;
  9222.         char    *line="line",
  9223.         *audio="audio",
  9224.         *blink="blink",
  9225.         *arrowhead="arrowhead",
  9226.         *crosshairsize="crosshairsize",
  9227.         *crosshair="crosshair",
  9228.         *crosshairs="crosshairs",
  9229.         *audioobject="audioobject",
  9230.         *style="style",
  9231.         *mouse="mouse",
  9232.         *mousex="mousex",
  9233.         *mousey="mousey",
  9234.         *mouse_display="display",
  9235.         *mouse_degree="mouse_degree",
  9236.         *userdraw="userdraw",
  9237.         *highlight="highlight",
  9238.         *http="http",
  9239.         *rays="rays",
  9240.         *dashtype="dashtype",
  9241.         *dashed="dashed",
  9242.         *filled="filled",
  9243.         *lattice="lattice",
  9244.         *parallel="parallel",
  9245.         *segment="segment",
  9246.         *segments="segments",
  9247.         *dsegment="dsegment",
  9248.         *dsegments="dsegments",
  9249.         *seg="seg",
  9250.         *segs="segs",
  9251.         *bgimage="bgimage",
  9252.         *bgcolor="bgcolor",
  9253.         *strokecolor="strokecolor",
  9254.         *backgroundimage="backgroundimage",
  9255.         *text="text",
  9256.         *textup="textup",
  9257.         *mouseprecision="mouseprecision",
  9258.         *precision="precision",
  9259.         *plotsteps="plotsteps",
  9260.         *plotstep="plotstep",
  9261.         *tsteps="tsteps",
  9262.         *curve="curve",
  9263.         *dcurve="dcurve",
  9264.         *plot="plot",
  9265.         *dplot="dplot",
  9266.         *levelcurve="levelcurve",
  9267.         *fontsize="fontsize",
  9268.         *fontcolor="fontcolor",
  9269.         *axis="axis",
  9270.         *axisnumbering="axisnumbering",
  9271.         *axisnumbers="axisnumbers",
  9272.         *arrow="arrow",
  9273.         *vector="vector",
  9274.         *vectors="vectors",
  9275.         *darrow="darrow",
  9276.         *arrow2="arrow2",
  9277.         *darrow2="darrow2",
  9278.         *arrows="arrows",
  9279.         *arrows2="arrows2",
  9280.         *zoom="zoom",
  9281.         *grid="grid",
  9282.         *hline="hline",
  9283.         *dhline="dhline",
  9284.         *drag="drag",
  9285.         *horizontalline="horizontalline",
  9286.         *horizontallines="horizontallines",
  9287.         *vline="vline",
  9288.         *dvline="dvline",
  9289.         *verticalline="verticalline",
  9290.         *verticallines="verticallines",
  9291.         *triangle="triangle",
  9292.         *triangles="triangles",
  9293.         *ftriangle="ftriangle",
  9294.         *ftriangles="ftriangles",
  9295.         *mathml="mathml",
  9296.         *html="html",
  9297.         *input="input",
  9298.         *clearbutton="clearbutton",
  9299.         *erase="erase",
  9300.         *delete="delete",
  9301.         *inputstyle="inputstyle",
  9302.         *textarea="textarea",
  9303.         *trange="trange",
  9304.         *ranget="ranget",
  9305.         *xrange="xrange",
  9306.         *yrange="yrange",
  9307.         *rangex="rangex",
  9308.         *rangey="rangey",
  9309.         *path="path",
  9310.         *polyline="polyline",
  9311.         *brokenline="brokenline",
  9312.         *lines="lines",
  9313.         *poly="poly",
  9314.         *polygon="polygon",
  9315.         *fpolygon="fpolygon",
  9316.         *fpoly="fpoly",
  9317.         *filledpoly="filledpoly",
  9318.         *filledpolygon="filledpolygon",
  9319.         *rect="rect",
  9320.         *frect="frect",
  9321.         *rectangle="rectangle",
  9322.         *frectangle="frectangle",
  9323.         *square="square",
  9324.         *fsquare="fsquare",
  9325.         *fsquares="fsquares",
  9326.         *rects="rects",
  9327.         *frects="frects",
  9328.         *dline="dline",
  9329.         *arc="arc",
  9330.         *filledarc="filledarc",
  9331.         *farc="farc",
  9332.         *size="size",
  9333.         *string="string",
  9334.         *stringup="stringup",
  9335.         *copy="copy",
  9336.         *copyresized="copyresized",
  9337.         *opacity="opacity",
  9338.         *transparent="transparent",
  9339.         *fill="fill",
  9340.         *point="point",
  9341.         *points="points",
  9342.         *linewidth="linewidth",
  9343.         *circle="circle",
  9344.         *circles="circles",
  9345.         *fcircle="fcircle",
  9346.         *fcircles="fcircles",
  9347.         *disk="disk",
  9348.         *disks="disks",
  9349.         *comment="#",
  9350.         *end="end",
  9351.         *ellipse="ellipse",
  9352.         *ellipses="ellipses",
  9353.         *fellipse="fellipse",
  9354.         *rotate="rotate",
  9355.         *affine="affine",
  9356.         *rotationcenter="rotationcenter",
  9357.         *killrotate="killrotate",
  9358.         *killaffine="killaffine",
  9359.         *fontfamily="fontfamily",
  9360.         *fillcolor="fillcolor",
  9361.         *clicktile="clicktile",
  9362.         *clicktile_colors="clicktile_colors",
  9363.         *translation="translation",
  9364.         *translate="translate",
  9365.         *killtranslation="killtranslation",
  9366.         *killtranslate="killtranslate",
  9367.         *onclick="onclick",
  9368.         *roundrects="roundrects",
  9369.         *roundrect="roundrect",
  9370.         *froundrect="froundrect",
  9371.         *froundrects="froundrects",
  9372.         *roundrectangle="roundrectangle",
  9373.         *patternfill="patternfill",
  9374.         *hatchfill="hatchfill",
  9375.         *diafill="diafill",
  9376.         *diamondfill="diamondfill",
  9377.         *dotfill="dotfill",
  9378.         *textfill="textfill",
  9379.         *gridfill="gridfill",
  9380.         *imagefill="imagefill",
  9381.         *xlogbase="xlogbase",
  9382.         *ylogbase="ylogbase",
  9383.         *xlogscale="xlogscale",
  9384.         *ylogscale="ylogscale",
  9385.         *xylogscale="xylogscale",
  9386.         *intooltip="intooltip",
  9387.         *popup="popup",
  9388.         *replyformat="replyformat",
  9389.         *floodfill="floodfill",
  9390.         *fillall="fillall",
  9391.         *filltoborder="filltoborder",
  9392.         *setpixel="setpixel",
  9393.         *pixels="pixels",
  9394.         *pixelsize="pixelsize",
  9395.         *xaxis="xaxis",
  9396.         *xaxisup="xaxisup",
  9397.         *yaxis="yaxis",
  9398.         *xaxistext="xaxistext",
  9399.         *xaxistextup="xaxistextup",
  9400.         *yaxistext="yaxistext",
  9401.         *piechart="piechart",
  9402.         *boxplot="boxplot",
  9403.         *boxplotdata="boxplotdata",
  9404.         *userboxplot="userboxplot",
  9405.         *userboxplotdata="userboxplotdata",
  9406.         *legend="legend",
  9407.         *legendcolors="legendcolors",
  9408.         *xlabel="xlabel",
  9409.         *ylabel="ylabel",
  9410.         *barchart="barchart",
  9411.         *linegraph="linegraph",
  9412.         *clock="clock",
  9413.         *animate="animate",
  9414.         *video="video",
  9415.         *status="status",
  9416.         *nostatus="nostatus",
  9417.         *snaptogrid="snaptogrid",
  9418.         *xsnaptogrid="xsnaptogrid",
  9419.         *ysnaptogrid="ysnaptogrid",
  9420.         *snaptopoints="snaptopoints",
  9421.         *snaptofunction="snaptofunction",
  9422.         *snaptofun="snaptofun",
  9423.         *userinput_xy="userinput_xy",
  9424.         *userinput_function="userinput_function",
  9425.         *usertextarea_xy="usertextarea_xy",
  9426.         *userinput="userinput",
  9427.         *jsmath="jsmath",
  9428.         *trace_jscurve="trace_jscurve",
  9429.         *setlimits="setlimits",
  9430.         *jscurve="jscurve",
  9431.         *jsplot="jsplot",
  9432.         *sgraph="sgraph",
  9433.         *title="title",
  9434.         *centerstring="centerstring",
  9435.         *xunit="xunit",
  9436.         *yunit="yunit",
  9437.         *slider="slider",
  9438.         *killslider="killslider",
  9439.         *angle="angle",
  9440.         *halflines="halflines",
  9441.         *demilines="demilines",
  9442.         *halfline="halfline",
  9443.         *demiline="demiline",
  9444.         *hlines="hlines",
  9445.         *vlines="vlines",
  9446.         *bezier="bezier",
  9447.         *functionlabel="functionlabel",
  9448.         *sliderfunction_x="sliderfunction_x",
  9449.         *sliderfunction_y="sliderfunction_y",
  9450.         *multidraw="multidraw",
  9451.         *multilinewidth="multilinewidth",
  9452.         *multistrokecolors="multistrokecolors",
  9453.         *multifillcolors="multifillcolors",
  9454.         *multistrokeopacity="multistrokeopacity",
  9455.         *multifillopacity="multifillopacity",
  9456.         *multifill="multifill",
  9457.         *multidash="multidash",
  9458.         *multilabel="multilabel",
  9459.         *multiuserinput="multiuserinput",
  9460.         *multisnaptogrid="multisnaptogrid",
  9461.         *protractor="protractor",
  9462.         *ruler="ruler",
  9463.         *cursor="cursor",
  9464.         *pointer="pointer",
  9465.         *yerrorbars="yerrorbars",
  9466.         *xerrorbars="xerrorbars",
  9467.         *noxaxis="noxaxis",
  9468.         *noyaxis="noyaxis",
  9469.         *colorpalette="colorpalette",
  9470.         *yoffset="yoffset",
  9471.         *xoffset="xoffset",
  9472.         *centered="centered",
  9473.         *xyoffset="xyoffset",
  9474.         *resetoffset="resetoffset",
  9475.         *fillpattern="fillpattern",
  9476.         *numberline="numberline",
  9477.         *canvastype="canvastype";
  9478.  
  9479.         while(((c = getc(infile)) != EOF)&&(c!='\n')&&(c!=',')&&(c!='=')&&(c!='\r')&&(c!='\t')){
  9480.          if( i == 0 && (c == ' ') ){ continue; /* white spaces or tabs allowed before first command identifier */
  9481.          }else{
  9482.           if( c == ' ' ){
  9483.             break;
  9484.           }else{
  9485.            temp[i] = c;
  9486.            if(i > MAX_INT - 2){canvas_error("command string too long !");}
  9487.            i++;
  9488.           }
  9489.          }
  9490.          if(temp[0] == '#'){ break; }
  9491.         }
  9492.         if (c == '\n' || c == '\r' || c == '\t' ){  line_number++; }
  9493.         if (c == EOF) {finished=1;return 0;}
  9494.  
  9495.         temp[i]='\0';
  9496.         input_type=(char*)my_newmem(strlen(temp));
  9497.         snprintf(input_type,sizeof(temp),"%s",temp);
  9498. /* fprintf(stdout,"temp = %s <br/>",input_type); */
  9499.         if( strcmp(input_type, size) == 0 ){
  9500.         free(input_type);
  9501.         return SIZE;
  9502.         }
  9503.         if( strcmp(input_type, xrange) == 0 ){
  9504.         free(input_type);
  9505.         return XRANGE;
  9506.         }
  9507.         if( strcmp(input_type, rangex) == 0 ){
  9508.         free(input_type);
  9509.         return XRANGE;
  9510.         }
  9511.         if( strcmp(input_type, trange) == 0 ){
  9512.         free(input_type);
  9513.         return TRANGE;
  9514.         }
  9515.         if( strcmp(input_type, ranget) == 0 ){
  9516.         free(input_type);
  9517.         return TRANGE;
  9518.         }
  9519.         if( strcmp(input_type, yrange) == 0 ){
  9520.         free(input_type);
  9521.         return YRANGE;
  9522.         }
  9523.         if( strcmp(input_type, rangey) == 0 ){
  9524.         free(input_type);
  9525.         return YRANGE;
  9526.         }
  9527.         if( strcmp(input_type, linewidth) == 0 ){
  9528.         free(input_type);
  9529.         return LINEWIDTH;
  9530.         }
  9531.         if( strcmp(input_type, dashed) == 0 ){
  9532.         free(input_type);
  9533.         return DASHED;
  9534.         }
  9535.         if( strcmp(input_type, dashtype) == 0 ){
  9536.         free(input_type);
  9537.         return DASHTYPE;
  9538.         }
  9539.         if( strcmp(input_type, axisnumbering) == 0 ){
  9540.         free(input_type);
  9541.         return AXIS_NUMBERING;
  9542.         }
  9543.         if( strcmp(input_type, axisnumbers) == 0 ){
  9544.         free(input_type);
  9545.         return AXIS_NUMBERING;
  9546.         }
  9547.         if( strcmp(input_type, axis) == 0 ){
  9548.         free(input_type);
  9549.         return AXIS;
  9550.         }
  9551.         if( strcmp(input_type, grid) == 0 ){
  9552.         free(input_type);
  9553.         return GRID;
  9554.         }
  9555.         if( strcmp(input_type, hlines) == 0 || strcmp(input_type, horizontallines) == 0 ){
  9556.         free(input_type);
  9557.         return HLINES;
  9558.         }
  9559.         if( strcmp(input_type, vlines) == 0 ||  strcmp(input_type, verticallines) == 0 ){
  9560.         free(input_type);
  9561.         return VLINES;
  9562.         }
  9563.         if( strcmp(input_type, hline) == 0 || strcmp(input_type, horizontalline) == 0 ){
  9564.         free(input_type);
  9565.         return HLINE;
  9566.         }
  9567.         if( strcmp(input_type, vline) == 0 ||  strcmp(input_type, verticalline) == 0 ){
  9568.         free(input_type);
  9569.         return VLINE;
  9570.         }
  9571.         if( strcmp(input_type, line) == 0 ){
  9572.         free(input_type);
  9573.         return LINE;
  9574.         }
  9575.         if( strcmp(input_type, segments) == 0 || strcmp(input_type, segs) == 0 ){
  9576.         free(input_type);
  9577.         return SEGMENTS;
  9578.         }
  9579.         if( strcmp(input_type, seg) == 0 ||  strcmp(input_type, segment) == 0 ){
  9580.         free(input_type);
  9581.         return SEGMENT;
  9582.         }
  9583.         if( strcmp(input_type, dsegments) == 0 ){
  9584.         free(input_type);
  9585.         use_dashed = TRUE;
  9586.         return SEGMENTS;
  9587.         }
  9588.         if( strcmp(input_type, dsegment) == 0 ){
  9589.         free(input_type);
  9590.         use_dashed = TRUE;
  9591.         return SEGMENT;
  9592.         }
  9593.         if( strcmp(input_type, crosshairsize) == 0 ){
  9594.         free(input_type);
  9595.         return CROSSHAIRSIZE;
  9596.         }
  9597.         if( strcmp(input_type, arrowhead) == 0 ){
  9598.         free(input_type);
  9599.         return ARROWHEAD;
  9600.         }
  9601.         if( strcmp(input_type, crosshairs) == 0 ){
  9602.         free(input_type);
  9603.         return CROSSHAIRS;
  9604.         }
  9605.         if( strcmp(input_type, crosshair) == 0 ){
  9606.         free(input_type);
  9607.         return CROSSHAIR;
  9608.         }
  9609.         if( strcmp(input_type, onclick) == 0 ){
  9610.         free(input_type);
  9611.         return ONCLICK;
  9612.         }
  9613.         if( strcmp(input_type, drag) == 0 ){
  9614.         free(input_type);
  9615.         return DRAG;
  9616.         }
  9617.         if( strcmp(input_type, userdraw) == 0 ){
  9618.         free(input_type);
  9619.         return USERDRAW;
  9620.         }
  9621.         if( strcmp(input_type, highlight) == 0 || strcmp(input_type, style) == 0 ){
  9622.         free(input_type);
  9623.         return STYLE;
  9624.         }
  9625.         if( strcmp(input_type, fillcolor) == 0 ){
  9626.         free(input_type);
  9627.         return FILLCOLOR;
  9628.         }
  9629.         if( strcmp(input_type, strokecolor) == 0 ){
  9630.         free(input_type);
  9631.         return STROKECOLOR;
  9632.         }
  9633.         if( strcmp(input_type, filled) == 0  ){
  9634.         free(input_type);
  9635.         return FILLED;
  9636.         }
  9637.         if( strcmp(input_type, http) == 0 ){
  9638.         free(input_type);
  9639.         return HTTP;
  9640.         }
  9641.         if( strcmp(input_type, rays) == 0 ){
  9642.         free(input_type);
  9643.         return RAYS;
  9644.         }
  9645.         if( strcmp(input_type, lattice) == 0 ){
  9646.         free(input_type);
  9647.         return LATTICE;
  9648.         }
  9649.         if( strcmp(input_type, bgimage) == 0 ){
  9650.         free(input_type);
  9651.         return BGIMAGE;
  9652.         }
  9653.         if( strcmp(input_type, bgcolor) == 0 ){
  9654.         free(input_type);
  9655.         return BGCOLOR;
  9656.         }
  9657.         if( strcmp(input_type, backgroundimage) == 0 ){
  9658.         free(input_type);
  9659.         return BGIMAGE;
  9660.         }
  9661.         if( strcmp(input_type, text) == 0 ){
  9662.         free(input_type);
  9663.         return FLY_TEXT;
  9664.         }
  9665.         if( strcmp(input_type, textup) == 0 ){
  9666.         free(input_type);
  9667.         return FLY_TEXTUP;
  9668.         }
  9669.         if( strcmp(input_type, mouse) == 0 ){
  9670.         free(input_type);
  9671.         return MOUSE;
  9672.         }
  9673.         if( strcmp(input_type, mousex) == 0 ){
  9674.         free(input_type);
  9675.         return MOUSEX;
  9676.         }
  9677.         if( strcmp(input_type, mousey) == 0 ){
  9678.         free(input_type);
  9679.         return MOUSEY;
  9680.         }
  9681.         if( strcmp(input_type, mouse_degree) == 0 ){
  9682.         free(input_type);
  9683.         return MOUSE_DEGREE;
  9684.         }
  9685.         if( strcmp(input_type, mouse_display) == 0 ){
  9686.         free(input_type);
  9687.         return MOUSE_DISPLAY;
  9688.         }
  9689.         if( strcmp(input_type, mouseprecision) == 0 ){
  9690.         free(input_type);
  9691.         return MOUSE_PRECISION;
  9692.         }
  9693.         if( strcmp(input_type, precision) == 0 ){
  9694.         free(input_type);
  9695.         return MOUSE_PRECISION;
  9696.         }
  9697.         if( strcmp(input_type, curve) == 0 ){
  9698.         free(input_type);
  9699.         return CURVE;
  9700.         }
  9701.         if( strcmp(input_type, dcurve) == 0 ){
  9702.         use_dashed = TRUE;
  9703.         free(input_type);
  9704.         return CURVE;
  9705.         }
  9706.         if( strcmp(input_type, plot) == 0 ){
  9707.         free(input_type);
  9708.         return CURVE;
  9709.         }
  9710.         if( strcmp(input_type, dplot) == 0 ){
  9711.         use_dashed = TRUE;
  9712.         free(input_type);
  9713.         return CURVE;
  9714.         }
  9715.         if( strcmp(input_type, levelcurve) == 0 ){
  9716.         free(input_type);
  9717.         return LEVELCURVE;
  9718.         }
  9719.         if( strcmp(input_type, plotsteps) == 0 ){
  9720.         free(input_type);
  9721.         return PLOTSTEPS;
  9722.         }
  9723.         if( strcmp(input_type, plotstep) == 0 ){
  9724.         free(input_type);
  9725.         return PLOTSTEPS;
  9726.         }
  9727.         if( strcmp(input_type, tsteps) == 0 ){
  9728.         free(input_type);
  9729.         return PLOTSTEPS;
  9730.         }
  9731.         if( strcmp(input_type, fontsize) == 0 ){
  9732.         free(input_type);
  9733.         return FONTSIZE;
  9734.         }
  9735.         if( strcmp(input_type, fontcolor) == 0 ){
  9736.         free(input_type);
  9737.         return FONTCOLOR;
  9738.         }
  9739.         if( strcmp(input_type, arrow2) == 0 ){
  9740.         free(input_type);
  9741.         return ARROW2;
  9742.         }
  9743.         if( strcmp(input_type, darrow) == 0 ){
  9744.         free(input_type);
  9745.         use_dashed = TRUE;
  9746.         return ARROW;
  9747.         }
  9748.         if( strcmp(input_type, darrow2) == 0 ){
  9749.         free(input_type);
  9750.         use_dashed = TRUE;
  9751.         return ARROW2;
  9752.         }
  9753.         if( strcmp(input_type, arrows2) == 0 ){
  9754.         free(input_type);
  9755.         return ARROWS2;
  9756.         }
  9757.         if( strcmp(input_type, arrows) == 0  || strcmp(input_type, vectors) == 0 ){
  9758.         free(input_type);
  9759.         return ARROWS;
  9760.         }
  9761.         if( strcmp(input_type, arrow) == 0 ||  strcmp(input_type, vector) == 0 ){
  9762.         free(input_type);
  9763.         return ARROW;
  9764.         }
  9765.         if( strcmp(input_type, zoom) == 0 ){
  9766.         free(input_type);
  9767.         return ZOOM;
  9768.         }
  9769.         if( strcmp(input_type, triangle) == 0 ){
  9770.         free(input_type);
  9771.         return TRIANGLE;
  9772.         }
  9773.         if( strcmp(input_type, triangles) == 0 ){
  9774.         free(input_type);
  9775.         return TRIANGLES;
  9776.         }
  9777.         if( strcmp(input_type, ftriangles) == 0 ){
  9778.         free(input_type);
  9779.         use_filled = TRUE;
  9780.         return TRIANGLES;
  9781.         }
  9782.         if( strcmp(input_type, ftriangle) == 0 ){
  9783.         free(input_type);
  9784.         use_filled = TRUE;
  9785.         return TRIANGLE;
  9786.         }
  9787.         if( strcmp(input_type, input) == 0 ){
  9788.         free(input_type);
  9789.         return INPUT;
  9790.         }
  9791.         if( strcmp(input_type, inputstyle) == 0 ){
  9792.         free(input_type);
  9793.         return INPUTSTYLE;
  9794.         }
  9795.         if( strcmp(input_type, textarea) == 0 ){
  9796.         free(input_type);
  9797.         return TEXTAREA;
  9798.         }
  9799.         if( strcmp(input_type, mathml) == 0 ){
  9800.         free(input_type);
  9801.         return MATHML;
  9802.         }
  9803.         if( strcmp(input_type, html) == 0 ){
  9804.         free(input_type);
  9805.         return MATHML;
  9806.         }
  9807.         if( strcmp(input_type, fontfamily) == 0 ){
  9808.         free(input_type);
  9809.         return FONTFAMILY;
  9810.         }
  9811.         if( strcmp(input_type, polyline) == 0 ||  strcmp(input_type, path) == 0 || strcmp(input_type, brokenline) == 0 ){
  9812.         free(input_type);
  9813.         return POLYLINE;
  9814.         }
  9815.         if( strcmp(input_type, lines) == 0 ){
  9816.         free(input_type);
  9817.         return LINES;
  9818.         }
  9819.         if( strcmp(input_type, rects) == 0){
  9820.         free(input_type);
  9821.         return RECTS;
  9822.         }
  9823.         if( strcmp(input_type, frects) == 0 ){
  9824.         free(input_type);
  9825.         use_filled = TRUE;
  9826.         return RECTS;
  9827.         }
  9828.         if( strcmp(input_type, rect) == 0  ||  strcmp(input_type, rectangle) == 0 ){
  9829.         free(input_type);
  9830.         return RECT;
  9831.         }
  9832.         if( strcmp(input_type, square) == 0 ){
  9833.         free(input_type);
  9834.         return SQUARE;
  9835.         }
  9836.         if( strcmp(input_type, fsquare) == 0 ){
  9837.         free(input_type);
  9838.         use_filled = TRUE;
  9839.         return SQUARE;
  9840.         }
  9841.         if( strcmp(input_type, fsquares) == 0 ){
  9842.         free(input_type);
  9843.         use_filled = TRUE;
  9844.         return RECTS;
  9845.         }
  9846.         if( strcmp(input_type, roundrects) == 0 ){
  9847.         free(input_type);
  9848.         return ROUNDRECTS;
  9849.         }
  9850.         if( strcmp(input_type, roundrect) == 0  ||  strcmp(input_type, roundrectangle) == 0 ){
  9851.         free(input_type);
  9852.         return ROUNDRECT;
  9853.         }
  9854.         if( strcmp(input_type, froundrects) == 0 ){
  9855.         free(input_type);
  9856.         use_filled = TRUE;
  9857.         return ROUNDRECTS;
  9858.         }
  9859.         if( strcmp(input_type, froundrect) == 0 ){
  9860.         free(input_type);
  9861.         use_filled = TRUE;
  9862.         return ROUNDRECT;
  9863.         }
  9864.         if( strcmp(input_type, dline) == 0 ){
  9865.         use_dashed = TRUE;
  9866.         free(input_type);
  9867.         return LINE;
  9868.         }
  9869.         if( strcmp(input_type, dvline) == 0 ){
  9870.         use_dashed = TRUE;
  9871.         free(input_type);
  9872.         return VLINE;
  9873.         }
  9874.         if( strcmp(input_type, dhline) == 0 ){
  9875.         use_dashed = TRUE;
  9876.         free(input_type);
  9877.         return HLINE;
  9878.         }
  9879.         if( strcmp(input_type, halflines) == 0 || strcmp(input_type, demilines) == 0  ){
  9880.         free(input_type);
  9881.         return HALFLINES;
  9882.         }
  9883.         if( strcmp(input_type, halfline) == 0 || strcmp(input_type, demiline) == 0  ){
  9884.         free(input_type);
  9885.         return HALFLINE;
  9886.         }
  9887.         if( strcmp(input_type, frect) == 0 || strcmp(input_type, frectangle) == 0 ){
  9888.         use_filled = TRUE;
  9889.         free(input_type);
  9890.         return RECT;
  9891.         }
  9892.         if( strcmp(input_type, circles) == 0 ){
  9893.         free(input_type);
  9894.         return CIRCLES;
  9895.         }
  9896.         if( strcmp(input_type, fcircle) == 0  ||  strcmp(input_type, disk) == 0 ){
  9897.         use_filled = TRUE;
  9898.         free(input_type);
  9899.         return CIRCLE;
  9900.         }
  9901.         if( strcmp(input_type, fcircles) == 0  ||  strcmp(input_type, disks) == 0 ){
  9902.         use_filled = TRUE;
  9903.         free(input_type);
  9904.         return CIRCLES;
  9905.         }
  9906.         if( strcmp(input_type, circle) == 0 ){
  9907.         free(input_type);
  9908.         return CIRCLE;
  9909.         }
  9910.         if( strcmp(input_type, point) == 0 ){
  9911.         free(input_type);
  9912.         return POINT;
  9913.         }
  9914.         if( strcmp(input_type, points) == 0 ){
  9915.         free(input_type);
  9916.         return POINTS;
  9917.         }
  9918.         if( strcmp(input_type, filledarc) == 0 || strcmp(input_type, farc) == 0 ){
  9919.         use_filled = TRUE;
  9920.         free(input_type);
  9921.         return ARC;
  9922.         }
  9923.         if( strcmp(input_type, arc) == 0 ){
  9924.         free(input_type);
  9925.         return ARC;
  9926.         }
  9927.         if( strcmp(input_type, poly) == 0 ||  strcmp(input_type, polygon) == 0 ){
  9928.         free(input_type);
  9929.         return POLY;
  9930.         }
  9931.         if( strcmp(input_type, fpoly) == 0 ||  strcmp(input_type, filledpoly) == 0 || strcmp(input_type,filledpolygon) == 0  || strcmp(input_type,fpolygon) == 0  ){
  9932.         use_filled = TRUE;
  9933.         free(input_type);
  9934.         return POLY;
  9935.         }
  9936.         if( strcmp(input_type, ellipse) == 0){
  9937.         free(input_type);
  9938.         return ELLIPSE;
  9939.         }
  9940.         if( strcmp(input_type, ellipses) == 0){
  9941.         free(input_type);
  9942.         return ELLIPSES;
  9943.         }
  9944.         if( strcmp(input_type, string) == 0 ){
  9945.         free(input_type);
  9946.         return STRING;
  9947.         }
  9948.         if( strcmp(input_type, stringup) == 0 ){
  9949.         free(input_type);
  9950.         return STRINGUP;
  9951.         }
  9952.         if( strcmp(input_type, opacity) == 0 || strcmp(input_type, transparent) == 0 ){
  9953.         free(input_type);
  9954.         return OPACITY;
  9955.         }
  9956.         if( strcmp(input_type, comment) == 0){
  9957.         free(input_type);
  9958.         return COMMENT;
  9959.         }
  9960.         if( strcmp(input_type, fellipse) == 0){
  9961.         free(input_type);
  9962.         use_filled = TRUE;
  9963.         return ELLIPSE;
  9964.         }
  9965.         if( strcmp(input_type, clearbutton) == 0 || strcmp(input_type, erase) == 0 || strcmp(input_type, delete) == 0){
  9966.         free(input_type);
  9967.         return CLEARBUTTON;
  9968.         }
  9969.         if( strcmp(input_type, translation) == 0 ||  strcmp(input_type, translate) == 0  ){
  9970.         free(input_type);
  9971.         return TRANSLATION;
  9972.         }
  9973.         if( strcmp(input_type, killtranslation) == 0 ||  strcmp(input_type, killtranslate) == 0){
  9974.         free(input_type);
  9975.         return KILLTRANSLATION;
  9976.         }
  9977.         if( strcmp(input_type, rotate) == 0){
  9978.         free(input_type);
  9979.         return ROTATE;
  9980.         }
  9981.         if( strcmp(input_type, killrotate) == 0){
  9982.         free(input_type);
  9983.         return KILLROTATE;
  9984.         }
  9985.         if( strcmp(input_type, rotationcenter) == 0){
  9986.         free(input_type);
  9987.         return ROTATION_CENTER;
  9988.         }
  9989.         if( strcmp(input_type, affine) == 0){
  9990.         free(input_type);
  9991.         return AFFINE;
  9992.         }
  9993.         if( strcmp(input_type, killaffine) == 0){
  9994.         free(input_type);
  9995.         return KILLAFFINE;
  9996.         }
  9997.         if( strcmp(input_type, slider) == 0 ){
  9998.         free(input_type);
  9999.         return SLIDER;
  10000.         }
  10001.         if( strcmp(input_type, killslider) == 0 ){
  10002.         free(input_type);
  10003.         return KILLSLIDER;
  10004.         }
  10005.         if( strcmp(input_type, copy) == 0 ){
  10006.         free(input_type);
  10007.         return COPY;
  10008.         }
  10009.         if( strcmp(input_type, copyresized) == 0 ){
  10010.         free(input_type);
  10011.         return COPYRESIZED;
  10012.         }
  10013.         if( strcmp(input_type, xlogscale) == 0 ){
  10014.         free(input_type);
  10015.         return XLOGSCALE;
  10016.         }
  10017.         if( strcmp(input_type, ylogscale) == 0 ){
  10018.         free(input_type);
  10019.         return YLOGSCALE;
  10020.         }
  10021.         if( strcmp(input_type, xylogscale) == 0 ){
  10022.         free(input_type);
  10023.         return XYLOGSCALE;
  10024.         }
  10025.         if( strcmp(input_type, ylogscale) == 0 ){
  10026.         free(input_type);
  10027.         return YLOGSCALE;
  10028.         }
  10029.         if( strcmp(input_type, xlogbase) == 0 ){
  10030.         free(input_type);
  10031.         return XLOGBASE;
  10032.         }
  10033.         if( strcmp(input_type, ylogbase) == 0 ){
  10034.         free(input_type);
  10035.         return YLOGBASE;
  10036.         }
  10037.         if( strcmp(input_type, intooltip) == 0 ){
  10038.         free(input_type);
  10039.         return INTOOLTIP;
  10040.         }
  10041.         if( strcmp(input_type, popup) == 0 ){
  10042.         free(input_type);
  10043.         return POPUP;
  10044.         }
  10045.         if( strcmp(input_type,video) == 0 ){
  10046.         free(input_type);
  10047.         return VIDEO;
  10048.         }
  10049.         if( strcmp(input_type,fillall) == 0 ){
  10050.         free(input_type);
  10051.         return FILLALL;
  10052.         }
  10053.         if( strcmp(input_type,floodfill) == 0 || strcmp(input_type,fill) == 0 ){
  10054.         free(input_type);
  10055.         return FLOODFILL;
  10056.         }
  10057.         if( strcmp(input_type,filltoborder) == 0 ){
  10058.         free(input_type);
  10059.         return FILLTOBORDER;
  10060.         }
  10061.         if( strcmp(input_type, replyformat) == 0 ){
  10062.         free(input_type);
  10063.         return REPLYFORMAT;
  10064.         }
  10065.         if( strcmp(input_type, pixelsize) == 0 ){
  10066.         free(input_type);
  10067.         return PIXELSIZE;
  10068.         }
  10069.         if( strcmp(input_type, setpixel) == 0 ){
  10070.         free(input_type);
  10071.         return SETPIXEL;
  10072.         }
  10073.         if( strcmp(input_type, pixels) == 0 ){
  10074.         free(input_type);
  10075.         return PIXELS;
  10076.         }
  10077.         if( strcmp(input_type, xaxis) == 0 || strcmp(input_type, xaxistext) == 0 ){
  10078.         free(input_type);
  10079.         return X_AXIS_STRINGS;
  10080.         }
  10081.         if( strcmp(input_type, xaxisup) == 0 || strcmp(input_type, xaxistextup) == 0 ){
  10082.         free(input_type);
  10083.         return X_AXIS_STRINGS_UP;
  10084.         }
  10085.         if( strcmp(input_type, yaxis) == 0  ||  strcmp(input_type, yaxistext) == 0 ){
  10086.         free(input_type);
  10087.         return Y_AXIS_STRINGS;
  10088.         }
  10089.         if( strcmp(input_type, legend) == 0  ){
  10090.         free(input_type);
  10091.         return LEGEND;
  10092.         }
  10093.         if( strcmp(input_type, legendcolors) == 0  ){
  10094.         free(input_type);
  10095.         return LEGENDCOLORS;
  10096.         }
  10097.         if( strcmp(input_type, xlabel) == 0  ){
  10098.         free(input_type);
  10099.         return XLABEL;
  10100.         }
  10101.         if( strcmp(input_type, ylabel) == 0  ){
  10102.         free(input_type);
  10103.         return YLABEL;
  10104.         }
  10105.         if( strcmp(input_type, bezier) == 0  ){
  10106.         free(input_type);
  10107.         return BEZIER;
  10108.         }
  10109.         if( strcmp(input_type, animate) == 0  ){
  10110.         free(input_type);
  10111.         return ANIMATE;
  10112.         }
  10113.         /* these are bitmap related flydraw commands...must be removed. eventually */
  10114.         if( strcmp(input_type, transparent) == 0 ){
  10115.         free(input_type);
  10116.         return TRANSPARENT;
  10117.         }
  10118.         if( strcmp(input_type, status) == 0 || strcmp(input_type, nostatus) == 0 ){
  10119.         free(input_type);
  10120.         return STATUS;
  10121.         }
  10122.         if( strcmp(input_type, xsnaptogrid) == 0 ){
  10123.         free(input_type);
  10124.         return XSNAPTOGRID;
  10125.         }
  10126.         if( strcmp(input_type, ysnaptogrid) == 0 ){
  10127.         free(input_type);
  10128.         return YSNAPTOGRID;
  10129.         }
  10130.         if( strcmp(input_type, snaptogrid) == 0 ){
  10131.         free(input_type);
  10132.         return SNAPTOGRID;
  10133.         }
  10134.         if( strcmp(input_type, snaptopoints) == 0 ){
  10135.         free(input_type);
  10136.         return SNAPTOPOINTS;
  10137.         }
  10138.         if( strcmp(input_type, snaptofunction) == 0  || strcmp(input_type, snaptofun) == 0 ){
  10139.         free(input_type);
  10140.         return SNAPTOFUNCTION;
  10141.         }
  10142.         if( strcmp(input_type, userinput_xy) == 0 ){
  10143.         free(input_type);
  10144.         return USERINPUT_XY;
  10145.         }
  10146.         if( strcmp(input_type, userinput_function) == 0 ){
  10147.         free(input_type);
  10148.         return USERINPUT_FUNCTION;
  10149.         }
  10150.         if( strcmp(input_type, usertextarea_xy) == 0 ){
  10151.         free(input_type);
  10152.         return USERTEXTAREA_XY;
  10153.         }
  10154.         if( strcmp(input_type, userinput) == 0 ){
  10155.         free(input_type);
  10156.         return USERINPUT;
  10157.         }
  10158.         if( strcmp(input_type, angle) == 0 ){
  10159.         free(input_type);
  10160.         return ANGLE;
  10161.         }
  10162.         if( strcmp(input_type, functionlabel) == 0 ){
  10163.         free(input_type);
  10164.         return FUNCTION_LABEL;
  10165.         }
  10166.         if( strcmp(input_type, sliderfunction_x) == 0 ){
  10167.         free(input_type);
  10168.         return SLIDER_X;
  10169.         }
  10170.         if( strcmp(input_type, sliderfunction_y) == 0 ){
  10171.         free(input_type);
  10172.         return SLIDER_Y;
  10173.         }
  10174.         if( strcmp(input_type, multidraw) == 0 ){
  10175.         free(input_type);
  10176.         return MULTIDRAW;
  10177.         }
  10178.         if( strcmp(input_type, multistrokeopacity) == 0 ){
  10179.         free(input_type);
  10180.         return MULTISTROKEOPACITY;
  10181.         }
  10182.         if( strcmp(input_type, multifillopacity) == 0 ){
  10183.         free(input_type);
  10184.         return MULTIFILLOPACITY;
  10185.         }
  10186.         if( strcmp(input_type, multilinewidth) == 0 ){
  10187.         free(input_type);
  10188.         return MULTILINEWIDTH;
  10189.         }
  10190.         if( strcmp(input_type, multistrokecolors) == 0 ){
  10191.         free(input_type);
  10192.         return MULTISTROKECOLORS;
  10193.         }
  10194.         if( strcmp(input_type, multifill) == 0 ){
  10195.         free(input_type);
  10196.         return MULTIFILL;
  10197.         }
  10198.         if( strcmp(input_type, multifillcolors) == 0 ){
  10199.         free(input_type);
  10200.         return MULTIFILLCOLORS;
  10201.         }
  10202.         if( strcmp(input_type, multilabel) == 0 ){
  10203.         free(input_type);
  10204.         return MULTILABEL;
  10205.         }
  10206.         if( strcmp(input_type, multidash) == 0 ){
  10207.         free(input_type);
  10208.         return MULTIDASH;
  10209.         }
  10210.         if( strcmp(input_type, multisnaptogrid) == 0 ){
  10211.         free(input_type);
  10212.         return MULTISNAPTOGRID;
  10213.         }
  10214.         if( strcmp(input_type, multiuserinput) == 0 ){
  10215.         free(input_type);
  10216.         return MULTIUSERINPUT;
  10217.         }
  10218.         if( strcmp(input_type, parallel) == 0 ){
  10219.         free(input_type);
  10220.         return PARALLEL;
  10221.         }
  10222.         if( strcmp(input_type, protractor) == 0 ){
  10223.         free(input_type);
  10224.         return PROTRACTOR;
  10225.         }
  10226.         if( strcmp(input_type, ruler) == 0 ){
  10227.         free(input_type);
  10228.         return RULER;
  10229.         }
  10230.         if( strcmp(input_type, cursor) == 0 ||  strcmp(input_type, pointer) == 0 ){
  10231.         free(input_type);
  10232.         return CURSOR;
  10233.         }
  10234.         if( strcmp(input_type, sgraph) == 0 ){
  10235.         free(input_type);
  10236.         return SGRAPH;
  10237.         }
  10238.         if( strcmp(input_type, jsmath) == 0 ){
  10239.         free(input_type);
  10240.         return JSMATH;
  10241.         }
  10242.         if( strcmp(input_type, trace_jscurve) == 0 ){
  10243.         free(input_type);
  10244.         return TRACE_JSCURVE;
  10245.         }
  10246.         if( strcmp(input_type, jscurve) == 0  ||  strcmp(input_type, jsplot) == 0 ){
  10247.         free(input_type);
  10248.         return JSCURVE;
  10249.         }
  10250.         if( strcmp(input_type, centerstring) == 0 || strcmp(input_type, title) == 0 ){
  10251.         free(input_type);
  10252.         return CENTERSTRING;
  10253.         }
  10254.         if( strcmp(input_type, setlimits) == 0 ){
  10255.         free(input_type);
  10256.         return SETLIMITS;
  10257.         }
  10258.         if( strcmp(input_type, xunit) == 0 ){
  10259.         free(input_type);
  10260.         return XUNIT;
  10261.         }
  10262.         if( strcmp(input_type, yunit) == 0 ){
  10263.         free(input_type);
  10264.         return YUNIT;
  10265.         }
  10266.         if( strcmp(input_type, fill) == 0 ){
  10267.         free(input_type);
  10268.         return FLOODFILL;
  10269.         }
  10270.         if( strcmp(input_type, end) == 0){
  10271.         free(input_type);
  10272.         return END;
  10273.         }
  10274.         if( strcmp(input_type, blink) == 0 ){
  10275.         free(input_type);
  10276.         return BLINK;
  10277.         }
  10278.         if( strcmp(input_type, audio) == 0 ){
  10279.         free(input_type);
  10280.         return AUDIO;
  10281.         }
  10282.         if( strcmp(input_type, audioobject) == 0 ){
  10283.         free(input_type);
  10284.         return AUDIOOBJECT;
  10285.         }
  10286.         if( strcmp(input_type, patternfill) == 0 ){
  10287.         free(input_type);
  10288.         return PATTERNFILL;
  10289.         }
  10290.         if( strcmp(input_type, hatchfill) == 0 ){
  10291.         free(input_type);
  10292.         return HATCHFILL;
  10293.         }
  10294.         if( strcmp(input_type, diafill) == 0  || strcmp(input_type, diamondfill) == 0  ){
  10295.         free(input_type);
  10296.         return DIAMONDFILL;
  10297.         }
  10298.         if( strcmp(input_type, dotfill) == 0 ){
  10299.         free(input_type);
  10300.         return DOTFILL;
  10301.         }
  10302.         if( strcmp(input_type, textfill) == 0 ){
  10303.         free(input_type);
  10304.         return TEXTFILL;
  10305.         }
  10306.         if( strcmp(input_type, gridfill) == 0 ){
  10307.         free(input_type);
  10308.         return GRIDFILL;
  10309.         }
  10310.         if( strcmp(input_type, imagefill) == 0 ){
  10311.         free(input_type);
  10312.         return IMAGEFILL;
  10313.         }
  10314.         if( strcmp(input_type, clicktile_colors) == 0 ){
  10315.         free(input_type);
  10316.         return CLICKTILE_COLORS;
  10317.         }
  10318.         if( strcmp(input_type, clicktile) == 0 ){
  10319.         free(input_type);
  10320.         return CLICKTILE;
  10321.         }
  10322.         if( strcmp(input_type, piechart) == 0  ){
  10323.         free(input_type);
  10324.         return PIECHART;
  10325.         }
  10326.         if( strcmp(input_type, boxplot) == 0  ){
  10327.         free(input_type);
  10328.         return BOXPLOT;
  10329.         }
  10330.         if( strcmp(input_type, boxplotdata) == 0  ){
  10331.         free(input_type);
  10332.         return BOXPLOTDATA;
  10333.         }
  10334.         if( strcmp(input_type, userboxplot) == 0  ){
  10335.         free(input_type);
  10336.         return USERBOXPLOT;
  10337.         }
  10338.         if( strcmp(input_type, userboxplotdata) == 0  ){
  10339.         free(input_type);
  10340.         return USERBOXPLOT;
  10341.         }
  10342.         if( strcmp(input_type, barchart) == 0  ){
  10343.         free(input_type);
  10344.         return BARCHART;
  10345.         }
  10346.         if( strcmp(input_type, linegraph) == 0  ){
  10347.         free(input_type);
  10348.         return LINEGRAPH;
  10349.         }
  10350.         if( strcmp(input_type, clock) == 0  ){
  10351.         free(input_type);
  10352.         return CLOCK;
  10353.         }
  10354.         if( strcmp(input_type, yerrorbars) == 0  ){
  10355.         free(input_type);
  10356.         return YERRORBARS;
  10357.         }
  10358.         if( strcmp(input_type, xerrorbars) == 0  ){
  10359.         free(input_type);
  10360.         return XERRORBARS;
  10361.         }
  10362.         if( strcmp(input_type, canvastype) == 0  ){
  10363.         free(input_type);
  10364.         return CANVASTYPE;
  10365.         }
  10366.         if( strcmp(input_type, noyaxis) == 0  ){
  10367.         free(input_type);
  10368.         return NOYAXIS;
  10369.         }
  10370.         if( strcmp(input_type, noxaxis) == 0  ){
  10371.         free(input_type);
  10372.         return NOXAXIS;
  10373.         }
  10374.         if( strcmp(input_type, colorpalette) == 0  ){
  10375.         free(input_type);
  10376.         return COLORPALETTE;
  10377.         }
  10378.         if( strcmp(input_type, resetoffset) == 0  ){
  10379.         free(input_type);
  10380.         return RESETOFFSET;
  10381.         }
  10382.         if( strcmp(input_type, xyoffset) == 0  ){
  10383.         free(input_type);
  10384.         return XYOFFSET;
  10385.         }
  10386.         if( strcmp(input_type, centered) == 0 ){
  10387.         free(input_type);
  10388.         return CENTERED;
  10389.         }
  10390.         if( strcmp(input_type, yoffset) == 0   ){
  10391.         free(input_type);
  10392.         return YOFFSET;
  10393.         }
  10394.         if( strcmp(input_type, xoffset) == 0   ){
  10395.         free(input_type);
  10396.         return XOFFSET;
  10397.         }
  10398.         if( strcmp(input_type, fillpattern) == 0 ){
  10399.         free(input_type);
  10400.         return FILLPATTERN;
  10401.         }
  10402.         if( strcmp(input_type, numberline) == 0 ){
  10403.         free(input_type);
  10404.         return NUMBERLINE;
  10405.         }
  10406.         free(input_type);
  10407.         ungetc(c,infile);
  10408.         return 0;
  10409. }
  10410.