Subversion Repositories wimsdev

Rev

Rev 8257 | Rev 8297 | Go to most recent revision | Blame | Compare with Previous | Last modification | View Log | RSS feed

  1. /*
  2. 27/7/2013 version 0.01
  3. "Inspired" by FLY program: http://martin.gleeson.com/fly
  4. *********************************************************************************
  5. * J.M. Evers 7/2013                                                             *
  6. * This is all just amateur scriblings... So no copyrights.                      *
  7. * This source code file, and compiled objects derived from it,                  *
  8. * can be used and distributed without restriction, including for commercial use *
  9. * No warrenty whatsoever                                                        *
  10. *********************************************************************************
  11. */
  12. #include "canvasdraw.h"
  13.  
  14. /******************************************************************************
  15. **  Internal Functions
  16. ******************************************************************************/
  17. void    add_to_buffer(char *tmp); /* add tmp_buffer to the buffer */
  18. void    sync_input(FILE *infile);/* proceed with inputfile */
  19. void    add_javascript_functions(int js_functions[], int canvas_root_id);
  20. void    reset();/* reset some global variables like "use_filled" , "use_dashed" */
  21. int     get_token(FILE *infile); /* read next char until EOL*/
  22. /*
  23. int     x2px(double x);
  24. int     y2px(double y);
  25. */
  26. double  px2x(int x);
  27. double  px2y(int y);
  28. double  get_real(FILE *infile,int last); /* read a value; calculation and symbols allowed */
  29. char    *str_replace ( const char *word, const char *sub_word, const char *rep_word );
  30. char    *get_color(FILE *infile,int last); /* read hex-color or colorname -> hex */
  31. char    *get_string(FILE *infile,int last); /* get the string at the end of a command */
  32. char    *get_string_argument(FILE *infile,int last); /* the same, but with "comma" as  separator */
  33. char    *convert_hex2rgb(char *hexcolor);
  34. void    add_read_canvas(int canvas_root_id,int reply_format,int reply_precision);
  35. void    make_js_include(int canvas_root_id);
  36. void    check_string_length(int length);/* checks if the length of string argument of command is correct */
  37. FILE    *js_include_file;
  38. FILE    *get_file(int *line_number, char **filename);
  39. FILE    *infile;    /* will be stdin */
  40. /******************************************************************************
  41. ** global
  42. ******************************************************************************/
  43. int finished = FALSE;/* main variable for signalling the end of the fly-script ; if finished = 1 ; write to stdout or canvasz */
  44. int line_number = 1;/* used in canvas_error() ; keep track of line number in canvasdraw/fly - script */
  45. /* set some variables to avoid trouble (NaN) in case of syntax and other usage errors */
  46. int xsize = 320;
  47. int ysize = 320;
  48. double xmin = 0.0;
  49. double xmax = 320.0;
  50. double ymin = 0.0;
  51. double ymax = 320.0;
  52. double tmax = 2;
  53. double tmin = -2;
  54. /* flag to indicate parsing of line status */
  55. int done = FALSE;
  56. int type; /* eg command number */
  57. int onclick = 0;/* 0 = noninteractive ; 1 = onclick ; 2 = draggable*/
  58. int slider = 0;/* slider=1 : x-values ; slider=2 : y-values;slider=3 angle values */
  59. int use_affine = FALSE;
  60. int use_rotate = FALSE;
  61. int use_filled = FALSE;
  62. int use_dashed = FALSE; /* dashing not natively supported in firefox  , for now... */
  63.  
  64. char buffer[MAX_BUFFER];/* contains js-functions with arguments ... all other basic code is directly printed into js-include file */
  65.  
  66. /******************************************************************************
  67. ** Main Program
  68. ******************************************************************************/
  69. int main(int argc, char *argv[]){
  70.     /* need unique id for every call to canvasdraw : rand(); is too slow...will result in many identical id's */
  71.     struct timeval tv;struct timezone tz;gettimeofday(&tv, &tz);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_axis = FALSE;
  79.     int use_axis_numbering = FALSE;
  80.     int use_pan_and_zoom = FALSE;
  81.     int use_safe_eval = FALSE; /* if true, add just once : js function to evaluate userinput values for plotting etc */
  82.     int use_js_math = FALSE; /* if true add js-function to convert math_function --> javascript math_function */
  83.     int use_js_plot = FALSE; /* if true , let js-engine plot the curve */
  84.     int line_width = 1;
  85.     int decimals = 2;
  86.     int precision = 100; /* 10 = 1;100=2;1000=3 decimal display for mouse coordinates or grid coordinate */
  87.     int use_userdraw = FALSE; /* flag to indicate user interaction: incompatible with "drag & drop" code !! */
  88.     int drag_type = -1;/* 0,1,2 : xy,x,y */
  89.     int use_tooltip = FALSE;
  90.     char *tooltip_text = "Click here";
  91.     char *temp = ""; /* */
  92.     char *bgcolor = "";/* used for background of canvas_div ; default is tranparent */
  93.     char *stroke_color = "255,0,0";
  94.     char *fill_color = "0,255,0";
  95.     char *font_family = "12px Ariel"; /* commands xaxistext,yaxistext,legend,text/textup/string/stringup may us this */
  96.     char *font_color = "#00000";
  97.     char *draw_type = "points";
  98.     char *fly_font = "normal";
  99.     char *input_style = "";
  100.     char *flytext = "";
  101.     char *affine_matrix = "[1,0,0,1,0,0]";
  102.     int pixelsize = 1;
  103.     int reply_format = 0;
  104.     int input_cnt = 0;
  105.     int ext_img_cnt = 0;
  106.     int slider_cnt = 0;
  107.     int font_size = 12;
  108.     int dashtype[2] = { 4 , 4 };
  109.     int js_function[MAX_JS_FUNCTIONS]; /* javascript functions include objects on demand basis : only once per object type */
  110.     for(i=0;i<MAX_JS_FUNCTIONS;i++){js_function[i]=0;}
  111.     int arrow_head = 8; /* size in px*/
  112.     int crosshair_size = 5; /* size in px*/
  113.     int plot_steps = 250;
  114.     int found_size_command = 0; /* 1 = found size ; 2 = found xrange; 3 = found yrange*/
  115.     int click_cnt = 1;
  116.     int clock_cnt = 0; /* counts the amount of clocks used -> unique object clock%d */
  117.     int linegraph_cnt = 0; /* identifier for command 'linegraph' ; multiple line graphs may be plotted in a single plot*/
  118.     int barchart_cnt = 0; /* identifier for command 'barchart' ; multiple charts may be plotted in a single plot*/
  119.     int legend_cnt = -1; /* to allow multiple legends to be used, for multiple piecharts etc  */
  120.     int reply_precision = 100; /* used for precision of student answers / drawings */
  121.     double angle = 0.0;
  122.     int clickfillmarge = 20;
  123.     int animation_type = 9; /* == object type curve in drag library */
  124.     int use_input_xy = 0; /* 1= input fields 2= textarea 3=calc y value*/
  125.     int use_slider_display = 0; /* in case of a slider, should we display it's value ?*/
  126.     size_t string_length = 0;
  127.     double stroke_opacity = 0.8;
  128.     double fill_opacity = 0.8;
  129.     char *URL = "http://localhost/images";
  130.     memset(buffer,'\0',MAX_BUFFER);
  131.     void *tmp_buffer = "";
  132.  
  133.     /* default writing a unzipped js-include file into wims getfile directory */
  134.     char *w_wims_session = getenv("w_wims_session");
  135.     if(  w_wims_session == NULL || *w_wims_session == 0 ){
  136.         canvas_error("Hmmm, your wims environment does not exist...\nCanvasdraw should be used within wims.");
  137.     }
  138.     int L0=strlen(w_wims_session) + 21;
  139.     char *getfile_dir = my_newmem(L0); /* create memory to fit string precisely */
  140.     snprintf(getfile_dir,L0, "../sessions/%s/getfile",w_wims_session);/* string will fit precisely  */
  141.     mode_t process_mask = umask(0); /* check if file exists */
  142.     int result = mkdir(getfile_dir, S_IRWXU | S_IRWXG | S_IRWXO);
  143.     if( result == 0 || errno == EEXIST ){
  144.      umask(process_mask); /* be sure to set correct permission */
  145.      char *w_session = getenv("w_session");
  146.      int L1 = (int) (strlen(w_session)) + find_number_of_digits(canvas_root_id) + 48;
  147.     char *getfile_cmd = my_newmem(L1); /* create memory to fit string precisely */
  148.      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 */
  149.     /* write the include tag to html page:<script type="text/javascript" src="wims.cgi?session=%s&cmd=getfile&special_parm=11223344_js"></script> */
  150.     /* now write file into getfile dir*/
  151.     char *w_wims_home = getenv("w_wims_home"); /* "/home/users/wims" : we need absolute path for location */
  152.     int L2 = (int) (strlen(w_wims_home)) + (int) (strlen(w_wims_session)) + find_number_of_digits(canvas_root_id) + 23;
  153.     char *location = my_newmem(L2); /* create memory to fit string precisely */
  154.     snprintf(location,L2,"%s/sessions/%s/getfile/%d.js",w_wims_home,w_wims_session,canvas_root_id);/*absolute path */
  155.     js_include_file = fopen(location,"w");/* open the file location for writing */
  156.     /* check on opening...if nogood : mount readonly? disk full? permissions not set correctly? */
  157.     if(js_include_file == NULL){ canvas_error("SHOULD NOT HAPPEN : could not write to javascript include file...check your system logfiles !" );}
  158.  
  159. /* ----------------------------------------------------- */
  160. /* while more lines to process */
  161.  
  162.     while(!finished){
  163.         if(line_number>1 && found_size_command == 0){canvas_error("command \"size xsize,ysize\" needs to come first ! ");}
  164.         type = get_token(infile);
  165.         done = FALSE;
  166.         /*
  167.         @canvasdraw
  168.         @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...)
  169.         @General syntax <ul><li>The transparency of all objects can be controlled by command 'opacity [0-255],[0,255]'</il><li>a line based object can be controlled by command 'linewidth int'</li><li>a line based object may be dashed by using keyword 'dashed' before the object command.<br />the dashing type can be controled by command 'dashtype int,int'</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 'filled' before the object command.<br />The fill colour will be the stroke colour...(19/10/2013)</li><li> all draggable objects may have a slider 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 'drag x/y/xy'<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 zoom and will be translated in case of panning</li><li> a 'onclick object' can be set 'clickable' by the preceding keyword 'onclick'<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 (in stead 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></ul>
  170.         @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 />Use command 'replyformat' 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>    
  171.         */
  172.         switch(type){
  173.         case END:
  174.         finished = 1;
  175.         done = TRUE;
  176.         break;
  177.         case 0:
  178.             sync_input(infile);
  179.             break;
  180.         case COMMENT:
  181.             sync_input(infile);
  182.             break;
  183.         case EMPTY:
  184.             sync_input(infile);
  185.             break;
  186.         case SIZE:
  187.             /*
  188.             @size width,height
  189.             @set canvas size in pixels
  190.             @mandatory first command
  191.             @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
  192.             */
  193.             found_size_command = 1;
  194.             xsize = (int)(abs(round(get_real(infile,0)))); /* just to be sure that sizes > 0 */
  195.             ysize = (int)(abs(round(get_real(infile,1))));
  196.             /* sometimes we want xrange / yrange to be in pixels...without telling x/y-range */
  197.             xmin = 0;xmax = xsize;
  198.             ymin = 0;ymax = ysize;
  199.  
  200. /*
  201.  The sequence in which stuff is finally printed is important !!
  202.  for example, when writing a 'include.js" the may not be a "script tag <script>" etc etc
  203. */
  204. fprintf(stdout,"\n<script type=\"text/javascript\">\
  205. if( typeof wims_status === 'undefined' ){ var wims_status = \"$status\";};\
  206. if( typeof use_dragdrop_reply === 'undefined' ){ var use_dragdrop_reply = false;};\
  207. if( typeof canvas_scripts === 'undefined' ){ var canvas_scripts = new Array();};\
  208. canvas_scripts.push(\"%d\");</script>\n\
  209. <!-- canvasdraw div and tooltip placeholder, if needed -->\n<div tabindex=\"0\" id=\"canvas_div%d\" style=\"position:relative;width:%dpx;height:%dpx;margin-left:auto;margin-right:auto;\" ></div><div id=\"tooltip_placeholder_div%d\" style=\"display:block;margin-bottom:4px;\"><span id=\"tooltip_placeholder%d\" style=\"display:none;\"></span></div>\n",canvas_root_id,canvas_root_id,xsize,ysize,canvas_root_id,canvas_root_id);
  210. fprintf(stdout,"<!-- include actual object code via include file -->\n<script id=\"canvas_script%d\" type=\"text/javascript\" src=\"%s\"></script>\n",canvas_root_id,getfile_cmd);
  211. fprintf(js_include_file,"\n<!-- begin generated javascript include for canvasdraw -->\n\
  212. \"use strict\";\n\
  213. <!-- these variables and functions must be global -->\n\
  214. var read_dragdrop%d;\
  215. var read_canvas%d;\
  216. var set_clock;\
  217. var clear_draw_area;\
  218. var wims_canvas_function%d = function(){\n<!-- common used stuff -->\n\
  219. var userdraw_x = [];var userdraw_y = [];var userdraw_radius = [];\n\
  220. var xsize = %d;\
  221. var ysize = %d;\
  222. var precision = 100;\
  223. var canvas_div = document.getElementById(\"canvas_div%d\");\
  224. 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;};\
  225. 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;};\
  226. 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);};};\
  227. 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);};};\
  228. 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);};};\
  229. 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);};};\
  230. function scale_x_radius(rx){return rx*xsize/(xmax - xmin);};\
  231. function scale_y_radius(ry){return ry*ysize/(ymax - ymin);};\
  232. function distance(x1,y1,x2,y2){return parseInt(Math.sqrt( (x1-x2)*(x1-x2) + (y1-y2)*(y1-y2) ));};\
  233. 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) ));};\
  234. 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;};\
  235. 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;};\
  236. var x_use_snap_to_grid = 0;var y_use_snap_to_grid = 0;var snap_x = 1;var snap_y = 1;\
  237. function snap_to_x(x){return x2px(snap_x*(Math.round((px2x(x))/snap_x)));};\
  238. function snap_to_y(y){return y2px(snap_y*(Math.round((px2y(y))/snap_y)));};\
  239. var xlogbase = 10;\
  240. var ylogbase = 10;\
  241. var use_xlogscale = 0;\
  242. var use_ylogscale = 0;\
  243. var x_strings = null;\
  244. var y_strings = null;\
  245. var use_pan_and_zoom = 0;\
  246. var use_jsmath = 0;\
  247. var xstart = 0;\
  248. var ystart = 0;\
  249. var unit_x=\" \";\
  250. var unit_y=\" \";",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);
  251. /* default add the drag code : nearly always used ...*/
  252.   add_drag_code(js_include_file,DRAG_CANVAS,canvas_root_id);
  253.  
  254.             break;
  255.         case XRANGE:
  256.         /*
  257.         @ xrange xmin,xmax
  258.         @ if not given: 0,xsize (eg in pixels)
  259.         */
  260.             for(i = 0 ; i<2; i++){
  261.                 switch(i){
  262.                     case 0: xmin = get_real(infile,0);break;
  263.                     case 1: xmax = get_real(infile,1);break;
  264.                     default: break;
  265.                 }
  266.             }
  267.             if(xmin >= xmax){canvas_error(" xrange is not OK : xmin &lt; xmax !\n");}
  268.             fprintf(js_include_file,"var xmin = %f;var xmax = %f;",xmin,xmax);
  269.             found_size_command++;
  270.             break;
  271.         case YRANGE:
  272.         /*
  273.         @ yrange ymin,ymax
  274.         @ if not given 0,ysize (eg in pixels)
  275.         */
  276.             for(i = 0 ; i<2; i++){
  277.                 switch(i){
  278.                     case 0: ymin = get_real(infile,0);break;
  279.                     case 1: ymax = get_real(infile,1);break;
  280.                     default: break;
  281.                 }
  282.             }
  283.             if(ymin >= ymax){canvas_error(" yrange is not OK : ymin &lt; ymax !\n");}
  284.             fprintf(js_include_file,"var ymin = %f;var ymax = %f;",ymin,ymax);
  285.             found_size_command++;
  286.             break;
  287.         case TRANGE:
  288.         /*
  289.         @ trange tmin,tmax
  290.         @ default -2,2
  291.         */
  292.             use_parametric = TRUE;
  293.             for(i = 0 ; i<2; i++){
  294.                 switch(i){
  295.                     case 0: tmin = get_real(infile,0);break;
  296.                     case 1: tmax = get_real(infile,1);break;
  297.                     default: break;
  298.                 }
  299.             }
  300.             if(tmin >= tmax ){canvas_error(" trange is not OK : tmin &lt; tmax!\n");}
  301.             break;
  302.         case LINEWIDTH:
  303.         /*
  304.         @ linewidth int
  305.         @ default 1
  306.         */
  307.             line_width = (int) (get_real(infile,1));
  308.             break;
  309.         case ARROWHEAD:
  310.         /*
  311.         @ arrowhead int
  312.         @ default 8 (pixels)
  313.         */
  314.             arrow_head = (int) (get_real(infile,1));
  315.             break;
  316.         case CROSSHAIRSIZE:
  317.         /*
  318.         @ crosshairsize int
  319.         @ default 10 (px)
  320.         */
  321.             crosshair_size = (int) (get_real(infile,1));
  322.             break;
  323.         case CROSSHAIR:
  324.         /*
  325.         @ crosshair x,y,color
  326.         @ draw a single crosshair point at (x;y) in color 'color'
  327.         @ use command 'crosshairsize int' and / or 'linewidth int'  to adust
  328.         @ may be set draggable / onclick
  329.         */
  330.             for(i=0;i<3;i++){
  331.                 switch(i){
  332.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  333.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  334.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  335.                         decimals = find_number_of_digits(precision);
  336.                         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));\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);
  337.                         click_cnt++;reset();
  338.                         break;
  339.                     default:break;
  340.                 }
  341.             }
  342.             break;
  343.         case CROSSHAIRS:
  344.         /*
  345.         @ crosshairs color,x1,y1,x2,y2,...,x_n,y_n
  346.         @ draw multiple crosshair points at given coordinates in color 'color'
  347.         @ use command 'crosshairsize int' and / or 'linewidth int'  to adust
  348.         @ may be set draggable / onclick individually (!)
  349.         */
  350.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  351.             fill_color = stroke_color;
  352.             i=0;
  353.             while( ! done ){     /* get next item until EOL*/
  354.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  355.                 if(i%2 == 0 ){
  356.                     double_data[i] = get_real(infile,0); /* x */
  357.                 }
  358.                 else
  359.                 {
  360.                     double_data[i] = get_real(infile,1); /* y */
  361.                 }
  362.                 i++;
  363.             }
  364.             decimals = find_number_of_digits(precision);
  365.             for(c=0 ; c < i-1 ; c = c+2){
  366.                 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));\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);
  367.                 click_cnt++;
  368.             }
  369.             reset();
  370.             break;
  371.         case POINT:
  372.         /*
  373.         @ point x,y,color
  374.         @ draw a single point at (x;y) in color 'color'
  375.         @ use command 'linewidth int'  to adust size
  376.         @ may be set draggable / onclick
  377.         @ will not resize on zooming <br />(command 'circle x,y,r,color' will resize on zooming)
  378.         */
  379.             for(i=0;i<3;i++){
  380.                 switch(i){
  381.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  382.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  383.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  384.                     decimals = find_number_of_digits(precision);
  385.                     fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,2,[%.*f],[%.*f],[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[1],line_width,line_width,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);
  386.                     click_cnt++;break;
  387.                     default: break;
  388.                 }
  389.             }
  390.             reset();
  391.             break;
  392.         case POINTS:
  393.         /*
  394.         @ points color,x1,y1,x2,y2,...,x_n,y_n
  395.         @ draw multiple points at given coordinates in color 'color'
  396.         @ use command 'linewidth int'  to adust size
  397.         @ may be set draggable / onclick individually (!)
  398.         */
  399.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  400.             fill_color = stroke_color;
  401.             i=0;
  402.             while( ! done ){     /* get next item until EOL*/
  403.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  404.                 if(i%2 == 0 ){
  405.                     double_data[i] = get_real(infile,0); /* x */
  406.                 }
  407.                 else
  408.                 {
  409.                     double_data[i] = get_real(infile,1); /* y */
  410.                 }
  411.                 i++;
  412.             }
  413.             decimals = find_number_of_digits(precision);
  414.             for(c = 0 ; c < i-1 ; c = c+2){
  415.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,2,[%.*f],[%.*f],[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[c],decimals,double_data[c+1],line_width,line_width,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);
  416.                 click_cnt++;
  417.             }
  418.             reset();
  419.             break;
  420.         case SEGMENT:
  421.         /*
  422.         @ segment x1,y1,x2,y2,color
  423.         @ draw a line segment between points (x1:y1)--(x2:y2) in color 'color'
  424.         @ may be set draggable / onclick
  425.         */
  426.             for(i=0;i<5;i++) {
  427.                 switch(i){
  428.                     case 0: double_data[0]= get_real(infile,0);break; /* x1-values */
  429.                     case 1: double_data[1]= get_real(infile,0);break; /* y1-values */
  430.                     case 2: double_data[2]= get_real(infile,0);break; /* x2-values */
  431.                     case 3: double_data[3]= get_real(infile,0);break; /* y2-values */
  432.                     case 4: stroke_color=get_color(infile,1);/* name or hex color */
  433.                         decimals = find_number_of_digits(precision);
  434.                         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));\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);
  435.                         click_cnt++;reset();
  436.                         break;
  437.                     default: break;
  438.                 }
  439.             }
  440.             break;
  441.         case LINE:
  442.         /*
  443.         @ line x1,y1,x2,y2,color
  444.         @ draw a line through points (x1:y1)--(x2:y2) in color 'color'
  445.         @ or use command 'curve color,formula' to draw the line <br />(uses more points to draw the line; is however better draggable)
  446.         @ may be set draggable / onclick
  447.         */
  448.             for(i=0;i<5;i++){
  449.                 switch(i){
  450.                     case 0: double_data[10]= get_real(infile,0);break; /* x-values */
  451.                     case 1: double_data[11]= get_real(infile,0);break; /* y-values */
  452.                     case 2: double_data[12]= get_real(infile,0);break; /* x-values */
  453.                     case 3: double_data[13]= get_real(infile,0);break; /* y-values */
  454.                     case 4: stroke_color=get_color(infile,1);/* name or hex color */
  455.                     if( double_data[10] == double_data[12] ){ /* vertical line*/
  456.                         double_data[1] = xmin;
  457.                         double_data[3] = ymax;
  458.                         double_data[0] = double_data[10];
  459.                         double_data[2] = double_data[10];
  460.                     }
  461.                     else
  462.                     {
  463.                         if( double_data[11] == double_data[13] ){ /* horizontal line */
  464.                             double_data[1] = double_data[11];
  465.                             double_data[3] = double_data[11];
  466.                             double_data[0] = ymin;
  467.                             double_data[2] = xmax;
  468.                         }
  469.                         else
  470.                         {
  471.                         /* m */
  472.                         double_data[5] = (double_data[13] - double_data[11]) /(double_data[12] - double_data[10]);
  473.                         /* q */
  474.                         double_data[6] = double_data[11] - ((double_data[13] - double_data[11]) /(double_data[12] - double_data[10]))*double_data[10];
  475.  
  476.                         /*xmin,m*xmin+q,xmax,m*xmax+q*/
  477.  
  478.                             double_data[1] = (double_data[5])*(xmin)+(double_data[6]);
  479.                             double_data[3] = (double_data[5])*(xmax)+(double_data[6]);
  480.                             double_data[0] = xmin;
  481.                             double_data[2] = xmax;
  482.                         }
  483.                     }
  484.                     decimals = find_number_of_digits(precision);
  485.                     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));\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);
  486.                     click_cnt++;reset();
  487.                     break;
  488.                 }
  489.             }
  490.             break;
  491.         case HALFLINE:
  492.         /*
  493.         @ demiline x1,y1,x2,y2,color
  494.         @ alternative : halfline
  495.         @ draws a halfline starting in (x1:y1) and through (x2:y2) in color 'color' (colorname or hex)
  496.         @ may be set draggable / onclick
  497.         */
  498.             for(i=0;i<5;i++){
  499.                 switch(i){
  500.                     case 0: double_data[0]= get_real(infile,0);break; /* x-values */
  501.                     case 1: double_data[1]= get_real(infile,0);break; /* y-values */
  502.                     case 2: double_data[10]= get_real(infile,0);break; /* x-values */
  503.                     case 3: double_data[11]= get_real(infile,0);break; /* y-values */
  504.                     case 4: stroke_color=get_color(infile,1);/* name or hex color */
  505.                     if(double_data[0] == double_data[10]){ /* vertical halfline */
  506.                         if(double_data[1] < double_data[11]){
  507.                          double_data[3] = ymax + 1000;
  508.                         }
  509.                         else
  510.                         {
  511.                          double_data[3] = ymin - 1000;
  512.                         }
  513.                         double_data[2] = double_data[0];
  514.                     }
  515.                     else
  516.                     { /* horizontal halfline*/
  517.                      if( double_data[1] == double_data[11] ){
  518.                       if( double_data[0] < double_data[10] ){
  519.                         double_data[2] = xmax + 1000; /* halfline to the right */
  520.                       }
  521.                       else
  522.                       {
  523.                         double_data[2] = xmin - 1000; /* halfline to the left */
  524.                       }
  525.                       double_data[3] = double_data[1];
  526.                      }
  527.                      else
  528.                      {
  529.                       /* any other halfline */
  530.                       /* slope */
  531.                       double_data[12] = (double_data[11] - double_data[1])/(double_data[10] - double_data[0]);
  532.                       /* const */
  533.                       double_data[13] = double_data[1] - double_data[12]*double_data[0];
  534.                       if( double_data[0] < double_data[10] ){
  535.                        double_data[2] = double_data[2] + 1000;
  536.                       }
  537.                       else
  538.                       {
  539.                        double_data[2] = double_data[2] - 1000;
  540.                       }
  541.                       double_data[3] = double_data[12]*double_data[2] + double_data[13];
  542.                      }
  543.                     }    
  544.                     decimals = find_number_of_digits(precision);
  545.                     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));\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);
  546.                     click_cnt++;reset();
  547.                     break;
  548.                 }
  549.             }
  550.        
  551.             break;
  552.         case HLINE:
  553.         /*
  554.         @ hline x,y,color
  555.         @ draw a horizontal line through point (x:y) in color 'color'
  556.         @ or use command 'curve color,formula' to draw the line <br />(uses more points to draw the line; is however better draggable)
  557.         @ may be set draggable / onclick
  558.         */
  559.             for(i=0;i<3;i++) {
  560.                 switch(i){
  561.                     case 0: double_data[0] = get_real(infile,0);break; /* x-values */
  562.                     case 1: double_data[1] = get_real(infile,0);break; /* y-values */
  563.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  564.                     double_data[3] = double_data[1];
  565.                     decimals = find_number_of_digits(precision);
  566.                     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));\n",click_cnt,onclick,drag_type,decimals,xmin,decimals,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);
  567.                     click_cnt++;reset();
  568.                     break;
  569.                 }
  570.             }
  571.             break;
  572.         case VLINE:
  573.         /*
  574.         @ vline x,y,color
  575.         @ draw a vertical line through point (x:y) in color 'color'
  576.         @ may be set draggable / onclick
  577.         */
  578.             for(i=0;i<3;i++) {
  579.                 switch(i){
  580.                     case 0: double_data[0] = get_real(infile,0);break; /* x-values */
  581.                     case 1: double_data[1] = get_real(infile,0);break; /* y-values */
  582.                     case 2: stroke_color=get_color(infile,1);/* name or hex color */
  583.                         double_data[2] = double_data[0];
  584.                         decimals = find_number_of_digits(precision);
  585.                         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));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[2],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);
  586.                         click_cnt++;reset();
  587.                     break;
  588.                 }
  589.             }
  590.             break;
  591.         case SQUARE:
  592.         /*
  593.         @ square x,y,side (px) ,color
  594.         @ draw a square with left top corner (x:y) with side 'side' in color 'color'
  595.         @ use command 'fsquare x,y,side,color' for a filled square
  596.         @ use command/keyword  'filled' before command 'square x,y,side,color'
  597.         @ use command 'fillcolor color' before 'fsquare' to set the fill colour.
  598.         @ may be set draggable / onclick
  599.         */
  600.             for(i=0;i<5;i++){
  601.                 switch(i){
  602.                     case 0:double_data[0] = get_real(infile,0);break; /* x1-values */
  603.                     case 1:double_data[1] = get_real(infile,0);break; /* y1-values */
  604.                     case 2:double_data[2] = (int) (get_real(infile,0));break; /* width in px */
  605.                     case 3:
  606.                         stroke_color = get_color(infile,1);/* name or hex color */
  607.                         decimals = find_number_of_digits(precision);
  608.                         double_data[3] = double_data[0] + (xmax - xmin)*double_data[2]/xsize;
  609.                         double_data[4] = double_data[1] + -1*(ymax - ymin)*double_data[2]/ysize;
  610.                         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));\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);
  611.                         click_cnt++;reset();
  612.                         break;
  613.                 }
  614.             }
  615.             break;
  616.         case ROUNDRECT:
  617.         /*
  618.         @ roundrect x1,y1,x2,y2,radius,color
  619.         @ use command 'froundrect x1,y1,x2,y2,radius,color' for a filled rectangle
  620.         @ use command/keyword  'filled' before command 'roundrect x1,y1,x2,y2,radius,color'
  621.         @ use command 'fillcolor color' before 'froundrect' to set the fill colour.
  622.         @ may be set draggable / onclick
  623.         */
  624.             for(i=0;i<6;i++){
  625.                 switch(i){
  626.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  627.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  628.                     case 2:double_data[2] = get_real(infile,0);break; /* x-values */
  629.                     case 3:double_data[3] = get_real(infile,0);break; /* y-values */
  630.                     case 4:int_data[0] = (int) (get_real(infile,0));break; /* radius value in pixels */
  631.                     case 5:stroke_color = get_color(infile,1);/* name or hex color */
  632.                         /* ensure no inverted roundrect is produced... */
  633.                         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];}
  634.                         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];}
  635.                         decimals = find_number_of_digits(precision);
  636.                         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));\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);
  637.                         click_cnt++;reset();
  638.                     break;
  639.                 }
  640.             }
  641.             break;
  642.         case RECT:
  643.         /*
  644.         @ rect x1,y1,x2,y2,color
  645.         @ use command 'rect x1,y1,x2,y2,color' for a filled rectangle
  646.         @ use command/keyword  'filled' before command 'rect x1,y1,x2,y2,color'
  647.         @ use command 'fillcolor color' before 'frect' to set the fill colour.
  648.         @ may be set draggable / onclick
  649.         */
  650.             for(i=0;i<5;i++){
  651.                 switch(i){
  652.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  653.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  654.                     case 2:double_data[2] = get_real(infile,0);break; /* x-values */
  655.                     case 3:double_data[3] = get_real(infile,0);break; /* y-values */
  656.                     case 4:stroke_color = get_color(infile,1);/* name or hex color */
  657.                         decimals = find_number_of_digits(precision);
  658.                         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));\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);
  659.                         click_cnt++;reset();
  660.                         break;
  661.                 }
  662.             }
  663.             break;
  664.         case POLYLINE:
  665.         /*
  666.         @ polyline color,x1,y1,x2,y2...x_n,y_n
  667.         @ may be set draggable / onclick
  668.         */
  669.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  670.             i=0;
  671.             c=0;
  672.             while( ! done ){     /* get next item until EOL*/
  673.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  674.                 for( c = 0 ; c < 2; c++){
  675.                     if(c == 0 ){
  676.                         double_data[i] = get_real(infile,0);
  677.                         i++;
  678.                     }
  679.                     else
  680.                     {
  681.                         double_data[i] = get_real(infile,1);
  682.                         i++;
  683.                     }
  684.                 }
  685.             }
  686.             /* draw path : not closed & not filled */
  687.             decimals = find_number_of_digits(precision);
  688.             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));\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);
  689.             click_cnt++;reset();
  690.             break;
  691.         case POLY:
  692.         /*
  693.         @ poly color,x1,y1,x2,y2...x_n,y_n
  694.         @ draw closed polygon
  695.         @ use command 'fpoly' to fill it, use command 'fillcolor color' to set the fill color
  696.         @ may be set draggable / onclick
  697.         */
  698.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  699.             i=0;
  700.             c=0;
  701.             while( ! done ){     /* get next item until EOL*/
  702.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  703.                 for( c = 0 ; c < 2; c++){
  704.                     if(c == 0 ){
  705.                         double_data[i] = get_real(infile,0);
  706.                         i++;
  707.                     }
  708.                     else
  709.                     {
  710.                         double_data[i] = get_real(infile,1);
  711.                         i++;
  712.                     }
  713.                 }
  714.             }
  715.             /* draw path :  closed & optional filled */
  716.                 decimals = find_number_of_digits(precision);
  717.                 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));\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);
  718.                 click_cnt++;reset();
  719.             break;
  720.         case ARC:
  721.         /*
  722.          @ arc xc,yc,width,height,start_angle,end_angle,color
  723.          @ can not be set "onclick" or "drag xy"
  724.          @ attention: width == height == radius in pixels
  725.          @ will not zoom in or zoom out (because radius is given in pixels an not in x/y-system !). Panning will work
  726.          @ use command 'angle' for scalable angle
  727.         */
  728.             for(i=0;i<7;i++){
  729.                 switch(i){
  730.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  731.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  732.                     case 2:int_data[0] = (int)(get_real(infile,0));break; /* width in pixels ! */
  733.                     case 3:int_data[1] = (int)(get_real(infile,0));break; /* height in pixels ! */
  734.                     case 4:double_data[2] = get_real(infile,0);break; /* start angle in degrees */
  735.                     case 5:double_data[3] = get_real(infile,0);break; /* end angle in degrees */
  736.                     case 6:stroke_color = get_color(infile,1);/* name or hex color */
  737.                     /* in Shape library:
  738.                         x[0] = x[1] = xc
  739.                         y[0] = y[1] = yc
  740.                         w[0] = w[1] = radius = width = height
  741.                         h[0] = start_angle ; h[1] = end_engle
  742.                     */
  743.                         decimals = find_number_of_digits(precision);
  744.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,12,[%.*f,%.*f],[%.*f,%.*f],[%d,%d],[%.*f,%.*f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%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],int_data[0],int_data[0],decimals,double_data[2],decimals,double_data[3],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);
  745.                         reset();
  746.                     break;
  747.                 }
  748.             }
  749.             break;
  750.         case ANGLE:
  751.         /*
  752.          @ angle xc,yc,width,start_angle,end_angle,color
  753.          @ width is in x-range
  754.          @ will zoom in/out
  755.          @ if size is controlled by command 'slider' use radians to set limits of slider.
  756.         */
  757.             for(i=0;i<7;i++){
  758.                 switch(i){
  759.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  760.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  761.                     case 2:double_data[2] = get_real(infile,0);break; /* width in pixels ! */
  762.                     case 3:double_data[3] = get_real(infile,0);break; /* start angle in degrees */
  763.                     case 4:double_data[4] = get_real(infile,0);break; /* end angle in degrees */
  764.                     case 5:stroke_color = get_color(infile,1);/* name or hex color */
  765.                         decimals = find_number_of_digits(precision);
  766.                         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));\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);
  767.                         reset();
  768.                     break;
  769.                 }
  770.             }
  771.             break;
  772.  
  773.         case ELLIPSE:
  774.         /*
  775.         @ ellipse xc,yc,radius_x,radius_y,color
  776.         @ a ellipse with center xc/yc in x/y-range
  777.         @ radius_x and radius_y are in pixels
  778.         @ may be set draggable / onclick
  779.         @ will shrink / expand on zoom out / zoom in
  780.         */
  781.             for(i=0;i<5;i++){
  782.                 switch(i){
  783.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  784.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  785.                     case 2:double_data[2] = get_real(infile,0);break; /* rx -> px  */
  786.                     case 3:double_data[3] = get_real(infile,0);break; /* ry -> px  */
  787.                     case 4:stroke_color = get_color(infile,1);/* name or hex color */
  788.                         decimals = find_number_of_digits(precision);
  789.                         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));\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);
  790.                         click_cnt++;reset();
  791.                     break;
  792.                 }
  793.             }
  794.             break;
  795.         case DASHTYPE:
  796.         /*
  797.         @ dashtype int ,int
  798.         @ When dashed is set, the objects will be drawn with this dashtyp
  799.         @ default value "dashtype 2,2"
  800.         */
  801.             for(i=0;i<2;i++){
  802.                 switch(i){
  803.                     case 0 : dashtype[0] = (int) line_width*( get_real(infile,0)) ; break;
  804.                     case 1 : dashtype[1] = (int) line_width*( get_real(infile,1)) ; break;
  805.                 }
  806.             }
  807.         break;
  808.         case CIRCLE:
  809.         /*
  810.         @ circle xc,yc,width (2*r in pixels),color
  811.         @ use command 'fcircle xc,yc,d,color' or command 'filled' for a filled disk
  812.         @ use command 'fillcolor color' to set the fillcolor
  813.         @ may be set draggable / onclick
  814.         @ will shrink / expand on zoom out / zoom in
  815.         */
  816.             for(i=0;i<4;i++){
  817.                 switch(i){
  818.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  819.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  820.                     case 2: double_data[2] = px2x((get_real(infile,0))/2) - px2x(0);break; /* for zoom in/out : radius in 'dx' xrange*/
  821.                     case 3: stroke_color = get_color(infile,1);/* name or hex color */
  822.                         decimals = find_number_of_digits(precision);
  823.                         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));\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);
  824.                         click_cnt++;reset();
  825.                     break;
  826.                 }
  827.             }
  828.             break;
  829.         case RAYS:
  830.         /*
  831.          @ rays color,xc,yc,x1,y1,x2,y2,x3,y3...x_n,y_n
  832.          @ draw rays in color 'color' and center (xc:yc)
  833.          @ may be set draggable or onclick (every individual ray)
  834.         */
  835.             stroke_color=get_color(infile,0);
  836.             fill_color = stroke_color;
  837.             double_data[0] = get_real(infile,0);/* xc */
  838.             double_data[1] = get_real(infile,0);/* yc */
  839.             i=2;
  840.             while( ! done ){     /* get next item until EOL*/
  841.                 if(i > MAX_INT - 1){canvas_error("in command rays to many points / rays in argument: repeat command multiple times to fit");}
  842.                 if(i%2 == 0 ){
  843.                     double_data[i] = get_real(infile,0); /* x */
  844.                 }
  845.                 else
  846.                 {
  847.                     double_data[i] = get_real(infile,1); /* y */
  848.                 }
  849.             fprintf(js_include_file,"/* double_data[%d] = %f */\n",i,double_data[i]);
  850.                 i++;
  851.             }
  852.  
  853.             if( i%2 != 0 ){canvas_error("in command rays: unpaired x or y value");}
  854.             decimals = find_number_of_digits(precision);
  855.             for(c=2; c<i;c = c+2){
  856.                 click_cnt++;
  857.                 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));\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);
  858.             }
  859.             reset();
  860.             break;
  861.         case ARROW:
  862.         /*
  863.         @ arrow x1,y1,x2,y2,h,color
  864.         @ draw a single headed arrow/vector from (x1:y1) to (x2:y2)<br />with arrowhead size h in px and in color 'color'
  865.         @ use command 'linewidth int' to adjust thickness of the arrow
  866.         @ may be set draggable / onclick
  867.         */
  868.             for(i=0;i<6;i++){
  869.                 switch(i){
  870.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  871.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  872.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  873.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  874.                     case 4: arrow_head = (int) get_real(infile,0);break;/* h */
  875.                     case 5: stroke_color = get_color(infile,1);/* name or hex color */
  876.                         decimals = find_number_of_digits(precision);
  877.                         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));\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);
  878.                         click_cnt++;
  879.                         reset();
  880.                         break;
  881.                 }
  882.             }
  883.             break;
  884.         case ARROW2:
  885.         /*
  886.         @ arrow2 x1,y1,x2,y2,h,color
  887.         @ draw a double headed arrow/vector from (x1:y1) to (x2:y2)<br />with arrowhead size h in px and  in color 'color'
  888.         @ use command 'arrowhead int' to adjust the arrow head size
  889.         @ use command 'linewidth int' to adjust thickness of the arrow
  890.         @ may be set draggable / onclick
  891.         */
  892.             for(i=0;i<6;i++){
  893.                 switch(i){
  894.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  895.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  896.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  897.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  898.                     case 4: arrow_head = (int) get_real(infile,0);break;/* h */
  899.                     case 5: stroke_color = get_color(infile,1);/* name or hex color */
  900.                         decimals = find_number_of_digits(precision);
  901.                         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));\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);
  902.                         click_cnt++;reset();
  903.                         break;
  904.                 }
  905.             }
  906.             break;
  907.         case PARALLEL:
  908.         /*
  909.          @ parallel x1,y1,x2,y2,dx,dy,n,[colorname or #hexcolor]
  910.          @ can not be set "onclick" or "drag xy"
  911.         */
  912.             for( i = 0;i < 8; i++ ){
  913.                 switch(i){
  914.                     case 0: double_data[0] = get_real(infile,0);break; /* x1-values  -> x-pixels*/
  915.                     case 1: double_data[1] = get_real(infile,0);break; /* y1-values  -> y-pixels*/
  916.                     case 2: double_data[2] = get_real(infile,0);break; /* x2-values  -> x-pixels*/
  917.                     case 3: double_data[3] = get_real(infile,0);break; /* y2-values  -> y-pixels*/
  918.                     case 4: double_data[4] = xmin + get_real(infile,0);break; /* xv -> x-pixels */
  919.                     case 5: double_data[5] = ymax + get_real(infile,0);break; /* yv -> y-pixels */
  920.                     case 6: int_data[0] = (int) (get_real(infile,0));break; /* n  */
  921.                     case 7: stroke_color=get_color(infile,1);/* name or hex color */
  922.                     decimals = find_number_of_digits(precision);
  923.                     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));\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);
  924.                     click_cnt++;reset();
  925.                     break;
  926.                     default: break;
  927.                 }
  928.             }
  929.             break;
  930.         case TRIANGLE:
  931.         /*
  932.          @triangle x1,y1,x2,y2,x3,y3,color
  933.          @may be set draggable / onclic
  934.         */
  935.             for(i=0;i<7;i++){
  936.                 switch(i){
  937.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  938.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  939.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  940.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  941.                     case 4: double_data[4] = get_real(infile,0);break; /* x */
  942.                     case 5: double_data[5] = get_real(infile,0);break; /* y */
  943.                     case 6: stroke_color = get_color(infile,1);/* name or hex color */
  944.                         decimals = find_number_of_digits(precision);
  945.                         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));\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);
  946.                         click_cnt++;reset();
  947.                         break;
  948.                     default: break;
  949.                 }
  950.             }
  951.             break;
  952.         case LATTICE:
  953.         /*
  954.          @lattice x0,y0,xv1,yv1,xv2,yv2,n1,n2,color
  955.          @can not be set "onclick" or "drag xy"
  956.         */
  957.             if( js_function[DRAW_LATTICE] != 1 ){ js_function[DRAW_LATTICE] = 1;}
  958.             for( i = 0; i<9; i++){
  959.                 switch(i){
  960.                     case 0: int_data[0] = x2px(get_real(infile,0));break; /* x0-values  -> x-pixels*/
  961.                     case 1: int_data[1] = y2px(get_real(infile,0));break; /* y0-values  -> y-pixels*/
  962.                     case 2: int_data[2] = (int) (get_real(infile,0));break; /* x1-values  -> x-pixels*/
  963.                     case 3: int_data[3] = (int) -1*(get_real(infile,0));break; /* y1-values  -> y-pixels*/
  964.                     case 4: int_data[4] = (int) (get_real(infile,0));break; /* x2-values  -> x-pixels*/
  965.                     case 5: int_data[5] = (int) -1*(get_real(infile,0));break; /* y2-values  -> y-pixels*/
  966.                     case 6: int_data[6] = (int) (get_real(infile,0));break; /* n1-values */
  967.                     case 7: int_data[7] = (int) (get_real(infile,0));break; /* n2-values */
  968.                     case 8: stroke_color=get_color(infile,1);
  969.                         decimals = find_number_of_digits(precision);
  970.                         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);",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);
  971.                         check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  972.                         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);",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);
  973.                         add_to_buffer(tmp_buffer);
  974.                     break;
  975.                     default:break;
  976.                 }
  977.             }
  978.             reset();
  979.             break;
  980.         case SNAPTOGRID:
  981.         /*
  982.          @ snaptogrid
  983.          @ keyword (no arguments rewquired) needs to be defined before command 'userdraw' and after command 'grid'
  984.          @ in case of userdraw the drawn points will snap to xmajor / ymajor grid
  985.          @ if xminor / yminor is defined, 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 />
  986.         */
  987.         fprintf(js_include_file,"\nx_use_snap_to_grid = 1;y_use_snap_to_grid = 1;");
  988.         break;
  989.         case XSNAPTOGRID:
  990.         /*
  991.          @ xsnaptogrid
  992.          @ keyword (no arguments rewquired) needs to be defined before command 'userdraw' and after command 'grid'
  993.          @ in case of userdraw the drawn points will snap to xmajor grid
  994.          @ if xminor is defined, 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 />
  995.         */
  996.         fprintf(js_include_file,"\nx_use_snap_to_grid = 1;y_use_snap_to_grid = 0;");
  997.         break;
  998.         case YSNAPTOGRID:
  999.         /*
  1000.          @ ysnaptogrid
  1001.          @ keyword (no arguments rewquired) needs to be defined before command 'userdraw' and after command 'grid'
  1002.          @ in case of userdraw the drawn points will snap to ymajor grid
  1003.          @ if yminor is defined, 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 />
  1004.         */
  1005.         fprintf(js_include_file,"\nx_use_snap_to_grid = 0;y_use_snap_to_grid = 1;");
  1006.         break;
  1007.         case USERINPUT:
  1008.         /*
  1009.          @ userinput function | textarea | inputfield
  1010.          @ alternative command + argment to keywords "userinput_function","userinput_textarea" and "userinput_xy"
  1011.          @ textarea and inputfield are only usable in combination with some 'userdraw draw_ type'
  1012.          @ function may be used any time (e.g. without userdraw)
  1013.         */
  1014.             temp = get_string_argument(infile,1);
  1015.             if(strstr(temp,"function") != 0  || strstr(temp,"curve") != 0  || strstr(temp,"plot") != 0 ){
  1016.              if( js_function[DRAW_JSFUNCTION] != 1 ){
  1017.               js_function[DRAW_JSFUNCTION] = 1;
  1018.               if(reply_format == 0){reply_format = 24;}/* read canvas_input values */
  1019.               add_input_jsfunction(js_include_file,canvas_root_id,1,input_style,input_cnt,stroke_color,stroke_opacity,line_width,use_dashed,dashtype[0],dashtype[1]);
  1020.               input_cnt++;
  1021.              }
  1022.              if( use_js_math == FALSE){/* add this stuff only once...*/
  1023.               add_to_js_math(js_include_file);
  1024.               use_js_math = TRUE;
  1025.              }
  1026.              if( use_js_plot == FALSE){
  1027.               use_js_plot = TRUE;
  1028.               add_jsplot(js_include_file,canvas_root_id); /* this plots the function on JSPLOT_CANVAS */
  1029.              }
  1030.             }
  1031.             else
  1032.             {
  1033.              if(strstr(temp,"inputfield") != 0 ){
  1034.               if( use_input_xy != 0 ){canvas_error("userinput_xy can not be combined with usertextarea_xy command");}
  1035.               if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  1036.               use_input_xy = 1;
  1037.              }
  1038.              else
  1039.              {
  1040.               if(strstr(temp,"textarea") != 0 ){
  1041.                if( use_input_xy != 0 ){canvas_error("usertextarea_xy can not be combined with userinput_xy command");}
  1042.                if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  1043.                use_input_xy = 2;
  1044.               }
  1045.               else
  1046.               {
  1047.                 canvas_error("userinput argument may be \"function,inputfield,textarea\"");
  1048.               }
  1049.              }
  1050.             }
  1051.             break;
  1052.         case USERTEXTAREA_XY:
  1053.         /*
  1054.         @ usertextarea_xy
  1055.         @ keyword
  1056.         @ to be used in combination with command "userdraw object_type,color" wherein object_type is only segment / polyline for the time being...
  1057.         @ if set two textareas are added to the document<br />(one for x-values , one for y-values)
  1058.         @ the student may use this as correction for (x:y) on a drawing (or to draw without mouse, using just the coordinates)
  1059.         @ user drawings will not zoom on zooming (or pan on panning)
  1060.         */
  1061.             if( use_input_xy != 0 ){canvas_error("usertextarea_xy can not be combined with userinput_xy command");}
  1062.             if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  1063.             use_input_xy = 2;
  1064.             break;
  1065.         case USERINPUT_XY:
  1066.         /*
  1067.         @ userinput_xy
  1068.         @ keyword
  1069.         @ to be used in combination with command "userdraw object_type,color"
  1070.         @ 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)
  1071.         @ the student may use this as correction for (x:y) on a drawing (or to draw without mouse, using just the coordinates)
  1072.         @ 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.
  1073.         @ can not be combined with command "intooltip tiptext" <br />note: the 'tooltip div element' is used for placing inputfields
  1074.         @ user drawings will not zoom on zooming (or pan on panning)
  1075.         */
  1076.             /* add simple eval check to avoid code injection with unprotected eval(string) */
  1077.             if( use_input_xy != 0 ){canvas_error("userinput_xy can not be combined with usertextarea_xy command");}
  1078.             if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  1079.             use_input_xy = 1;
  1080.             break;
  1081.         case USERINPUT_FUNCTION:
  1082.         /*
  1083.         @ userinput_function
  1084.         @ keyword
  1085.         @ if set , a inputfield will be added to the page
  1086.         @ the userinput value will be plotted in the canvas
  1087.         @ this value may be read with 'read_canvas()'. <br />for do it yourself js-scripters : If this is the first inputfield in the script, it's id is canvas_input0
  1088.         @ 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
  1089.         @ incompatible with command 'intooltip link_text_or_image' : it uses the tooltip div for adding the inputfield
  1090.         */
  1091.             if( js_function[DRAW_JSFUNCTION] != 1 ){
  1092.              js_function[DRAW_JSFUNCTION] = 1;
  1093.              if(reply_format == 0){reply_format = 24;}/* read canvas_input values */
  1094.              add_input_jsfunction(js_include_file,canvas_root_id,1,input_style,input_cnt,stroke_color,stroke_opacity,line_width,use_dashed,dashtype[0],dashtype[1]);
  1095.              input_cnt++;
  1096.             }
  1097.             if( use_js_math == FALSE){/* add this stuff only once...*/
  1098.              add_to_js_math(js_include_file);
  1099.              use_js_math = TRUE;
  1100.             }
  1101.             if( use_js_plot == FALSE){
  1102.              use_js_plot = TRUE;
  1103.              add_jsplot(js_include_file,canvas_root_id); /* this plots the function on JSPLOT_CANVAS */
  1104.             }
  1105.             break;
  1106.         case USERDRAW:
  1107.         /*
  1108.         @ userdraw object_type,color
  1109.         @ 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</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]</li><li>rect</li><li>roundrect</li><li>rects</li><li>roundrects</li><li>freehandline</li><li>freehandlines</li><li>path</li><li>paths</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>
  1110.         @ 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)
  1111.         @ note: object_type text: Any string or multiple strings may be placed anywhere on the canvas.<br />while typing the background of every typed char will be lightblue..."backspace / delete / esc" will remove typed text.<br />You will need to hit "enter" to add the text to the array "userdraw_txt()" : lightblue background will disappear<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
  1112.         @ note: object_type polygone: Will be finished (the object is closed) when clicked on the first point of the polygone again.
  1113.         @ note: all objects will be removed -after a javascript confirm box- when clicked on an object point with middle or right mouse butten (e.g. event.which != 1 : all buttons but left)
  1114.         @ use command "filled", "opacity int,int"  and "fillcolor color" to trigger coloured filling of fillable objects
  1115.         @ use command "dashed" and/or "dashtype int,int" to trigger dashing
  1116.         @ use command "replyformat int" to control / adjust output formatting of javascript function read_canvas();
  1117.         @ may be combined with onclick or drag xy  of other components of flyscript objects (although not very usefull...)
  1118.         @ may be combined with keyword 'userinput_xy' or
  1119.         @ 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.!
  1120.         */
  1121.             if( use_userdraw == TRUE ){ /* only one object type may be drawn*/
  1122.                 canvas_error("Only one userdraw primitive may be used: read documentation !!");
  1123.             }
  1124.             reply_precision = precision;
  1125.             use_userdraw = TRUE;
  1126.             fprintf(js_include_file,"\n<!-- begin userdraw mouse events -->\nuserdraw_x = new Array();userdraw_y = new Array();userdraw_radius = new Array();var xy_cnt=0;var canvas_userdraw = create_canvas%d(%d,xsize,ysize);var context_userdraw = canvas_userdraw.getContext(\"2d\");var use_dashed = %d;if(use_dashed == 1){if( context_userdraw.setLineDash ){context_userdraw.setLineDash([%d,%d]);}else{if(context_userdraw.mozDash){context_userdraw.mozDash = [%d,%d];};};};if(wims_status != \"done\"){canvas_div.addEventListener(\"mousedown\",user_draw,false);canvas_div.addEventListener(\"mousemove\",user_drag,false);canvas_div.addEventListener(\"touchstart\",user_draw,false);canvas_div.addEventListener(\"touchmove\",user_drag,false);}\n<!-- end userdraw mouse events -->",canvas_root_id,DRAW_CANVAS,use_dashed,dashtype[0],dashtype[1],dashtype[0],dashtype[1]);
  1127.             draw_type = get_string_argument(infile,0);
  1128.             stroke_color = get_color(infile,1);
  1129.             if( strcmp(draw_type,"point") == 0 ){
  1130.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1131.                 if(reply_format == 0 ){reply_format = 8;}
  1132.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1133.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1134.                 if(use_input_xy == 1){
  1135.                     add_input_circle(js_include_file,1,1);
  1136.                     add_input_xy(js_include_file,canvas_root_id);
  1137.                 }
  1138.                 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);
  1139.             }
  1140.             else
  1141.             if( strcmp(draw_type,"points") == 0 ){
  1142.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1143.                 if(reply_format == 0 ){reply_format = 8;}
  1144.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1145.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1146.                 if(use_input_xy == 1){
  1147.                     add_input_circle(js_include_file,1,2);
  1148.                     add_input_xy(js_include_file,canvas_root_id);
  1149.                 }
  1150.                 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);
  1151.             }
  1152.             else
  1153.             if( strcmp(draw_type,"segment") == 0 ){
  1154.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1155.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  1156.                 if(reply_format == 0){reply_format = 11;}
  1157.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1158.                 if(use_input_xy == 1){
  1159.                     add_input_segment(js_include_file,1);
  1160.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1161.                 }
  1162.                 add_js_segments(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1163.             }
  1164.             else
  1165.             if( strcmp(draw_type,"polyline") == 0 ){
  1166.                 if( js_function[DRAW_POLYLINE] != 1 ){ js_function[DRAW_POLYLINE] = 1;}
  1167.                 if(reply_format == 0){reply_format = 23;}
  1168.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1169.                 if( use_input_xy == 1 ){
  1170.                     add_input_polyline(js_include_file);
  1171.                     add_input_xy(js_include_file,canvas_root_id);
  1172.                 }
  1173.                 add_js_polyline(js_include_file,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1174.             }
  1175.             else
  1176.             if( strcmp(draw_type,"segments") == 0 ){
  1177.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1178.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  1179.                 if(reply_format == 0){reply_format = 11;}
  1180.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1181.                 if(use_input_xy == 1){
  1182.                     add_input_segment(js_include_file,2);
  1183.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1184.                 }
  1185.                 add_js_segments(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1186.             }
  1187.             else
  1188.             if( strcmp(draw_type,"circle") == 0 ){
  1189.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1190.                 if(reply_format == 0){reply_format = 10;}
  1191.                 /* 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n in x/y-range */
  1192.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1193.                 if(use_input_xy == 1){
  1194.                     add_input_circle(js_include_file,2,1);
  1195.                     add_input_xyr(js_include_file,canvas_root_id);
  1196.                 }
  1197.                 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]);
  1198.             }
  1199.             else
  1200.             if( strcmp(draw_type,"circles") == 0 ){
  1201.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1202.                 if(reply_format == 0){reply_format = 10;}
  1203.                 /* 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n in x/y-range */
  1204.                 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]);
  1205.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1206.                 if(use_input_xy == 1){
  1207.                     add_input_circle(js_include_file,2,2);
  1208.                     add_input_xyr(js_include_file,canvas_root_id);
  1209.                 }
  1210.             }
  1211.             else
  1212.             if(strcmp(draw_type,"crosshair") == 0 ){
  1213.                 if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1214.                 if(reply_format == 0){reply_format = 8;}
  1215.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1216.                 add_js_crosshairs(js_include_file,1,draw_type,line_width,crosshair_size ,stroke_color,stroke_opacity);
  1217.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1218.                 if(use_input_xy == 1){
  1219.                     add_input_crosshair(js_include_file,1);
  1220.                     add_input_xy(js_include_file,canvas_root_id);
  1221.                 }
  1222.             }
  1223.             else
  1224.             if(strcmp(draw_type,"crosshairs") == 0 ){
  1225.                 if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1226.                 if(reply_format == 0){reply_format = 8;}
  1227.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1228.                 add_js_crosshairs(js_include_file,2,draw_type,line_width,crosshair_size ,stroke_color,stroke_opacity);
  1229.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1230.                 if(use_input_xy == 1){
  1231.                     add_input_crosshair(js_include_file,2);
  1232.                     add_input_xy(js_include_file,canvas_root_id);
  1233.                 }
  1234.             }
  1235.             else
  1236.             if(strcmp(draw_type,"freehandline") == 0 ){
  1237.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1238.                 if(reply_format == 0){reply_format = 6;}
  1239.                 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]);
  1240.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1241.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1242.             }
  1243.             else
  1244.             if(strcmp(draw_type,"freehandlines") == 0 ){
  1245.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1246.                 if(reply_format == 0){reply_format = 6;}
  1247.                 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]);
  1248.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1249.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1250.             }
  1251.             else
  1252.             if(strcmp(draw_type,"path") == 0 ){
  1253.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1254.                 if(reply_format == 0){reply_format = 6;}
  1255.                 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]);
  1256.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1257.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1258.             }
  1259.             else
  1260.             if(strcmp(draw_type,"paths") == 0 ){
  1261.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1262.                 if(reply_format == 0){reply_format = 6;}
  1263.                 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]);
  1264.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1265.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1266.             }
  1267.             else
  1268.             if(strcmp(draw_type,"arrows") == 0 ){
  1269.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1270.                 if(reply_format == 0){reply_format = 11;}
  1271.                 add_js_arrows(js_include_file,2,draw_type,line_width,1,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1272.                 if(use_input_xy == 1){
  1273.                     add_input_arrow(js_include_file,2);
  1274.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1275.                 }
  1276.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1277.             }
  1278.             else
  1279.             if(strcmp(draw_type,"arrows2") == 0 ){
  1280.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1281.                 if(reply_format == 0){reply_format = 11;}
  1282.                 add_js_arrows(js_include_file,2,draw_type,line_width,2,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1283.                 if(use_input_xy == 1){
  1284.                     add_input_arrow(js_include_file,1);
  1285.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1286.                 }
  1287.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1288.             }
  1289.             else
  1290.             if(strcmp(draw_type,"arrow2") == 0 ){
  1291.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1292.                 if(reply_format == 0){reply_format = 11;}
  1293.                 add_js_arrows(js_include_file,1,draw_type,line_width,2,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1294.                 if(use_input_xy == 1){
  1295.                     add_input_arrow(js_include_file,1);
  1296.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1297.                 }
  1298.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1299.             }
  1300.             else
  1301.             if(strcmp(draw_type,"arrow") == 0 ){
  1302.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1303.                 if(reply_format == 0){reply_format = 11;}
  1304.                 add_js_arrows(js_include_file,1,draw_type,line_width,1,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1305.                 if(use_input_xy == 1){
  1306.                     add_input_arrow(js_include_file,1);
  1307.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1308.                 }
  1309.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1310.             }
  1311.             else
  1312.             if(strcmp(draw_type,"polygon") == 0){
  1313.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1314.                 if(reply_format == 0){reply_format = 2;}
  1315.                 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]);
  1316.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1317.                 if(use_input_xy == 2){
  1318.                   add_textarea_polygon(js_include_file);
  1319.                   add_textarea_xy(js_include_file,canvas_root_id);
  1320.                 }
  1321.             }
  1322.             else
  1323.             if(strncmp(draw_type,"poly",4) == 0){
  1324.                 if(strlen(draw_type) < 5){canvas_error("use command \"userdraw poly[3-9],color\" eg userdraw poly6,blue");}
  1325.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1326.                 if(reply_format == 0){reply_format = 2;}
  1327.                 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]);
  1328.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1329.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1330.             }
  1331.             else
  1332.             if(strcmp(draw_type,"triangle") == 0){
  1333.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1334.                 if(reply_format == 0){reply_format = 2;}
  1335.                 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]);
  1336.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1337.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1338.             }
  1339.             else
  1340.             if( strcmp(draw_type,"hline") == 0 ){
  1341.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1342.                 if(reply_format == 0){reply_format = 11;}
  1343.                 add_js_hlines(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1344.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1345.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1346.             }
  1347.             else
  1348.             if( strcmp(draw_type,"hlines") == 0 ){
  1349.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1350.                 if(reply_format == 0){reply_format = 11;}
  1351.                 add_js_hlines(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1352.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1353.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1354.             }
  1355.             else
  1356.             if( strcmp(draw_type,"vline") == 0 ){
  1357.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1358.                 if(reply_format == 0){reply_format = 11;}
  1359.                 add_js_hlines(js_include_file,3,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1360.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1361.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1362.             }
  1363.             else
  1364.             if( strcmp(draw_type,"vlines") == 0 ){
  1365.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1366.                 if(reply_format == 0){reply_format = 11;}
  1367.                 add_js_hlines(js_include_file,4,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1368.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1369.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1370.             }
  1371.             else
  1372.             if( strcmp(draw_type,"line") == 0 ){
  1373.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1374.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1375.                 if(reply_format == 0){reply_format = 11;}
  1376.                 add_js_lines(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1377.                 if( use_input_xy == 1 ){
  1378.                     add_input_line(js_include_file,1);
  1379.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1380.                 }
  1381.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1382.             }
  1383.             else
  1384.             if( strcmp(draw_type,"lines") == 0 ){
  1385.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1386.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1387.                 if(reply_format == 0){reply_format = 11;}
  1388.                 add_js_lines(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1389.                 if( use_input_xy == 1 ){
  1390.                     add_input_line(js_include_file,2);
  1391.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1392.                 }
  1393.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1394.             }
  1395.             else
  1396.             if( strcmp(draw_type,"demilines") == 0 || strcmp(draw_type,"demilines") == 0 ){
  1397.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1398.                 if( js_function[DRAW_DEMILINES] != 1 ){ js_function[DRAW_DEMILINES] = 1;}
  1399.                 if(reply_format == 0){reply_format = 11;}
  1400.                 add_js_demilines(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1401.                 if( use_input_xy == 1 ){
  1402.                     add_input_demiline(js_include_file,2);
  1403.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1404.                 }
  1405.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1406.             }
  1407.             else
  1408.             if( strcmp(draw_type,"demiline") == 0 || strcmp(draw_type,"demilines") == 0 ){
  1409.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1410.                 if( js_function[DRAW_DEMILINES] != 1 ){ js_function[DRAW_DEMILINES] = 1;}
  1411.                 if(reply_format == 0){reply_format = 11;}
  1412.                 add_js_demilines(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1413.                 if( use_input_xy == 1 ){
  1414.                     add_input_demiline(js_include_file,1);
  1415.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1416.                 }
  1417.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1418.             }
  1419.             else
  1420.             if( strcmp(draw_type,"rects") == 0){
  1421.                 if( js_function[DRAW_RECTS] != 1 ){ js_function[DRAW_RECTS] = 1;}
  1422.                 if(reply_format == 0){reply_format = 2;}
  1423.                 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]);
  1424.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1425.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1426.             }
  1427.             else
  1428.             if( strcmp(draw_type,"roundrects") == 0){
  1429.                 if( js_function[DRAW_ROUNDRECTS] != 1 ){ js_function[DRAW_ROUNDRECTS] = 1;}
  1430.                 if(reply_format == 0){reply_format = 2;}
  1431.                 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]);
  1432.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1433.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1434.             }
  1435.             else
  1436.             if( strcmp(draw_type,"rect") == 0){
  1437.                 if( js_function[DRAW_RECTS] != 1 ){ js_function[DRAW_RECTS] = 1;}
  1438.                 if(reply_format == 0){reply_format = 2;}
  1439.                 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]);
  1440.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1441.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1442.             }
  1443.             else
  1444.             if( strcmp(draw_type,"roundrect") == 0){
  1445.                 if( js_function[DRAW_ROUNDRECTS] != 1 ){ js_function[DRAW_ROUNDRECTS] = 1;}
  1446.                 if(reply_format == 0){reply_format = 2;}
  1447.                 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]);
  1448.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1449.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1450.             }
  1451.             else
  1452.             if( strcmp(draw_type,"arcs") == 0){
  1453.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  1454.                 if(reply_format == 0){reply_format = 25;}
  1455.                 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]);
  1456.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1457.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1458.             }
  1459.             else
  1460.             if( strcmp(draw_type,"arc") == 0){
  1461.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  1462.                 if(reply_format == 0){reply_format = 25;}
  1463.                 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]);
  1464.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1465.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1466.             }
  1467.             else
  1468.             if( strcmp(draw_type,"text") == 0){
  1469.                 if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}
  1470.                 if(reply_format == 0){reply_format = 17;}
  1471.                 add_js_text(js_include_file,canvas_root_id,font_size,font_family,font_color,stroke_opacity);
  1472.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1473.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1474.             }
  1475.             else
  1476.             if( strcmp(draw_type,"inputs") == 0){
  1477.                 if( js_function[DRAW_INPUTS] != 1 ){ js_function[DRAW_INPUTS] = 1;}
  1478.                 if(reply_format == 0){reply_format = 27;}
  1479.                 add_js_inputs(js_include_file,canvas_root_id,2,input_cnt,input_style,line_width);
  1480.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1481.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1482.             }
  1483.             else
  1484.             if( strcmp(draw_type,"input") == 0){
  1485.                 if( js_function[DRAW_INPUTS] != 1 ){ js_function[DRAW_INPUTS] = 1;}
  1486.                 if(reply_format == 0){reply_format = 27;}
  1487.                 add_js_inputs(js_include_file,canvas_root_id,1,input_cnt,input_style,line_width);
  1488.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1489.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1490.             }
  1491.             else
  1492.             {
  1493.                 canvas_error("unknown drawtype or typo? ");
  1494.             }
  1495.             reset();
  1496.         break;
  1497.         case PLOTSTEPS:
  1498.             /*
  1499.              @ plotsteps a_number
  1500.              @ default 150
  1501.              @ use with care !
  1502.             */
  1503.             plot_steps = (int) (get_real(infile,1));
  1504.             break;
  1505.         case FONTSIZE:
  1506.         /*
  1507.          @fontsize font_size
  1508.          @default value 12
  1509.         */
  1510.             font_size = (int) (get_real(infile,1));
  1511.             break;
  1512.         case FONTCOLOR:
  1513.         /*
  1514.          @fontcolor color
  1515.          @color: hexcolor or colorname
  1516.          @default: black
  1517.          @example usage: x/y-axis text
  1518.         */
  1519.             font_color = get_color(infile,1);
  1520.             break;
  1521.         case ANIMATE:
  1522.         /*
  1523.          @animate type
  1524.          @REMOVED : this should be done with a slider
  1525.          @type may be "point" (nothing else , yet...)
  1526.          @the point is a filled rectangle ; adjust colour with command 'fillcolor colorname/hexnumber'
  1527.          @will animate a point on the next plot/curve command
  1528.          @the curve will not be draw
  1529.          @moves repeatedly from xmin to xmax
  1530.         */
  1531.             if( strstr(get_string(infile,1),"point") != 0 ){animation_type = 15;}else{canvas_error("the only animation type (for now) is \"point\"...");}
  1532.             break;
  1533.         case LEVELCURVE:
  1534.         /*
  1535.         @levelcurve color,expression in x/y,l1,l2,...
  1536.         @draws very primitive level curves for expression, with levels l1,l2,l3,...,l_n
  1537.         @the quality is <b>not to be compared</b> with the Flydraw levelcurve. <br />(choose flydraw if you want quality...)
  1538.         @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
  1539.         @note : the arrays for holding the javascript data are limited in size
  1540.         @note : reduce image size if javascript data arrays get overloaded<br />(command 'plotsteps int' will not control the data size of the plot...)
  1541.         */
  1542.             fill_color = get_color(infile,0);
  1543.             char *fun1 = get_string_argument(infile,0);
  1544.             if( strlen(fun1) == 0 ){canvas_error("function is NOT OK !");}
  1545.             i = 0;
  1546.             done = FALSE;
  1547.             while( !done ){
  1548.              double_data[i] = get_real(infile,1);
  1549.              i++;
  1550.             }
  1551.             for(c = 0 ; c < i; c++){
  1552.              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));\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);
  1553.              click_cnt++;
  1554.             }
  1555.             reset();
  1556.             break;
  1557.         case TRACE_JSCURVE:
  1558.         /*
  1559.          @trace_jscurve some_math_function
  1560.          @will use a crosshair to trace the jsmath curve
  1561.          @two inputfields will display the current x/y-values (numerical evaluation by javascript)
  1562.          @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
  1563.          @use linewidth,strokecolor,crosshairsize to adjust the corsshair.
  1564.          @the client browser will convert your math function to javascript math.<br />use parenthesis and rawmath : use 2*x in stead 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...
  1565.         */
  1566.             if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1567.             if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1568.             if( use_js_math == FALSE){
  1569.                 add_to_js_math(js_include_file);
  1570.                 use_js_math = TRUE;
  1571.             }
  1572.             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);
  1573.             break;
  1574.         case JSMATH:
  1575.         /*
  1576.             @jsmath some_math_function
  1577.             @will calculate an y-value from a userinput x-value and draws a crosshair on these coordinates.
  1578.             @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
  1579.             @example: jsmath sin(x^2)
  1580.             @the client browser will convert your math function to javascript math.<br />use parenthesis and rawmath : use 2*x in stead 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...
  1581.         */
  1582.             if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1583.             if( use_js_math == FALSE){
  1584.                 add_to_js_math(js_include_file);
  1585.                 use_js_math = TRUE;
  1586.             }
  1587.             add_calc_y(js_include_file,canvas_root_id,get_string(infile,1));
  1588.             break;
  1589.         case JSCURVE:
  1590.         /*
  1591.          @jscurve color,formula(x)
  1592.          @your function will be plotted by the javascript engine of the client browser.
  1593.          @use only basic math in your curve:<br /> sqrt,^,asin,acos,atan,log,pi,abs,sin,cos,tan,e
  1594.          @use parenthesis and rawmath : use 2*x in stead of 2x ; use 2^(sin(x))...etc etc<br />use error console to debug any errors...
  1595.          @Attention : last "precision" command in the canvasdraw script determines the calculation precision of the javascript curve plot !
  1596.          @no validity check is done by wims.
  1597.          @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
  1598.          @use command 'trace_jscurve formula(x)` for tracing
  1599.          @use commmand 'jsmath  formula(x)` for calculating and displaying indiviual points on the curve
  1600.          @can not be set draggable / onclick (yet)
  1601.          @commands plotjump / plotstep are not active for 'jscurve'
  1602.         */
  1603.             stroke_color = get_color(infile,0);
  1604.             if( use_js_math == FALSE){/* add this stuff only once...*/
  1605.                 add_to_js_math(js_include_file);
  1606.                 use_js_math = TRUE;
  1607.             }
  1608.             if( use_js_plot == FALSE){
  1609.                 use_js_plot = TRUE;
  1610.                 add_jsplot(js_include_file,canvas_root_id); /* this plots the function on JSPLOT_CANVAS */
  1611.             }
  1612.             temp = get_string_argument(infile,1);
  1613.             string_length = snprintf(NULL,0,  "jsplot(%d,\"%s\",%d,\"%s\",%.2f,%d,%d,%d); ",JSPLOT_CANVAS+use_js_plot,temp,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1614.             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1615.             snprintf(tmp_buffer,string_length,"jsplot(%d,\"%s\",%d,\"%s\",%.2f,%d,%d,%d); ",JSPLOT_CANVAS+use_js_plot,temp,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1616.             add_to_buffer(tmp_buffer);
  1617.             use_js_plot++; /* we need to create multiple canvasses, so we may zoom and pan ?? */
  1618.  
  1619.         break;
  1620.         case CURVE:
  1621.         /*
  1622.          @curve color,formula(x)
  1623.          @plot color,formula(x)
  1624.          @use command trange before command curve / plot  (trange -pi,pi)<br />curve color,formula1(t),formula2(t)
  1625.          @use command "precision" to increase the number of digits of the plotted points
  1626.          @use command "plotsteps" to increase / decrease the amount of plotted points (default 150)
  1627.          @may be set draggable / onclick
  1628.         */
  1629.             if( use_parametric == TRUE ){ /* parametric color,fun1(t),fun2(t)*/
  1630.                 use_parametric = FALSE;
  1631.                 stroke_color = get_color(infile,0);
  1632.                 char *fun1 = get_string_argument(infile,0);
  1633.                 char *fun2 = get_string_argument(infile,1);
  1634.                 if( strlen(fun1) == 0 || strlen(fun2) == 0 ){canvas_error("parametric functions are NOT OK !");}
  1635.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,%d,%s,[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,animation_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);
  1636.                 click_cnt++;
  1637.             }
  1638.             else
  1639.             {
  1640.                 stroke_color = get_color(infile,0);
  1641.                 char *fun1 = get_string_argument(infile,1);
  1642.                 if( strlen(fun1) == 0 ){canvas_error("function is NOT OK !");}
  1643.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,%d,%s,[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,animation_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);
  1644.                 click_cnt++;
  1645.             }
  1646.             animation_type = 9;/* reset to curve plotting without animation */
  1647.             reset();
  1648.             break;
  1649.         case FLY_TEXT:
  1650.         /*
  1651.         @ text fontcolor,x,y,font,text_string
  1652.         @ font may be described by keywords : giant,huge,normal,small,tiny
  1653.         @ use command 'fontsize' to increase base fontsize for these keywords
  1654.         @ may be set "onclick" or "drag xy"
  1655.         @ backwards compatible with flydraw
  1656.         @ unicode supported: text red,0,0,huge,\\u2232
  1657.         @ use command 'string' combined with 'fontfamily' for a more fine grained control over html5 canvas text element
  1658.         @ 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.
  1659.         */
  1660.             for(i = 0; i < 5 ;i++){
  1661.                 switch(i){
  1662.                     case 0: stroke_color = get_color(infile,0);break;/* font_color == stroke_color name or hex color */
  1663.                     case 1: double_data[0] = get_real(infile,0);break; /* x */
  1664.                     case 2: double_data[1] = get_real(infile,0);break; /* y */
  1665.                     case 3: fly_font = get_string_argument(infile,0);
  1666.                             if(strcmp(fly_font,"giant") == 0){
  1667.                                 font_size = (int)(font_size + 24);
  1668.                             }
  1669.                             else
  1670.                             {
  1671.                                 if(strcmp(fly_font,"huge") == 0){
  1672.                                     font_size = (int)(font_size + 14);
  1673.                                 }
  1674.                                 else
  1675.                                 {
  1676.                                     if(strcmp(fly_font,"large") == 0){
  1677.                                         font_size = (int)(font_size + 6);
  1678.                                         }
  1679.                                         else
  1680.                                         {
  1681.                                             if(strcmp(fly_font,"small") == 0){
  1682.                                                 font_size = (int)(font_size - 4);
  1683.                                                 if(font_size<0){font_size = 8;}
  1684.                                         }
  1685.                                     }
  1686.                                 }
  1687.                             }
  1688.                             break; /* font_size ! */
  1689.                     case 4:
  1690.                         temp = get_string_argument(infile,1);
  1691.                         decimals = find_number_of_digits(precision);
  1692.                         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));\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);
  1693.                         click_cnt++;reset();break;
  1694.                     default:break;
  1695.                 }
  1696.             }
  1697.             break;
  1698.         case FLY_TEXTUP:
  1699.         /*
  1700.          @ textup fontcolor,x,y,font,text_string
  1701.          @ can <b>not</b> be set "onclick" or "drag xy" (because of translaton matrix...mouse incompatible)
  1702.          @ font may be described by keywords : giant,huge,normal,small,tiny
  1703.          @ use command 'fontsize' to increase base fontsize for the keywords
  1704.          @ backwards compatible with flydraw
  1705.          @ unicode supported: textup red,0,0,huge,\\u2232
  1706.          @ use command 'stringup' and 'fontfamily' for a more fine grained control over html5 canvas text element
  1707.          @ 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.
  1708.         */
  1709.             if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}
  1710.             for(i = 0; i<5 ;i++){
  1711.                 switch(i){
  1712.                     case 0: font_color = get_color(infile,0);break;/* name or hex color */
  1713.                     case 1: int_data[0] = x2px(get_real(infile,0));break; /* x */
  1714.                     case 2: int_data[1] = y2px(get_real(infile,0));break; /* y */
  1715.                     case 3: fly_font = get_string_argument(infile,0);
  1716.                             if(strcmp(fly_font,"giant") == 0){
  1717.                                 font_size = (int)(font_size + 24);
  1718.                             }
  1719.                             else
  1720.                             {
  1721.                                 if(strcmp(fly_font,"huge") == 0){
  1722.                                     font_size = (int)(font_size + 14);
  1723.                                 }
  1724.                                 else
  1725.                                 {
  1726.                                     if(strcmp(fly_font,"large") == 0){
  1727.                                         font_size = (int)(font_size + 6);
  1728.                                         }
  1729.                                         else
  1730.                                         {
  1731.                                             if(strcmp(fly_font,"small") == 0){
  1732.                                                 font_size = (int)(font_size - 4);
  1733.                                                 if(font_size<0){font_size = 8;}
  1734.                                         }
  1735.                                     }
  1736.                                 }
  1737.                             }
  1738.                             break; /* font_size ! */
  1739.                     case 4:
  1740.                     decimals = find_number_of_digits(precision);
  1741.                     temp = get_string_argument(infile,1);
  1742.                     string_length = snprintf(NULL,0,"draw_text(%d,%d,%d,%d,\"%s\",\"%s\",%.2f,90,\"%s\",%d,%.2f,%d,%s);\n",STATIC_CANVAS,int_data[0],int_data[1],font_size,font_family,font_color,stroke_opacity,temp,use_rotate,angle,use_affine,affine_matrix);
  1743.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1744.                     snprintf(tmp_buffer,string_length,"draw_text(%d,%d,%d,%d,\"%s\",\"%s\",%.2f,90,\"%s\",%d,%.2f,%d,%s);\n",STATIC_CANVAS,int_data[0],int_data[1],font_size,font_family,font_color,stroke_opacity,temp,use_rotate,angle,use_affine,affine_matrix);
  1745.                     add_to_buffer(tmp_buffer);
  1746.                     break;
  1747.                     default:break;
  1748.                 }
  1749.             }
  1750.             reset();
  1751.             break;
  1752.         case FONTFAMILY:
  1753.         /*
  1754.          @ fontfamily font_description
  1755.          @ set the font family; for browsers that support it
  1756.          @ font_description: Ariel ,Courier, Helvetica etc
  1757.          @ 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 34px Ariel
  1758.          @ use correct syntax : 'font style' 'font size'px 'fontfamily'
  1759.         */
  1760.             font_family = get_string(infile,1);
  1761.             break;
  1762.         case STRINGUP:
  1763.         /*
  1764.          @ stringup color,x,y,rotation_degrees,the text string
  1765.          @ can <b>not</b> be set "onclick" or "drag xy" (because of translaton matrix...mouse incompatible)
  1766.          @ unicode supported: stringup red,0,0,45,\\u2232
  1767.          @ use a command like 'fontfamily bold 34px Courier' <br />to set fonts on browser that support font change
  1768.  
  1769.         */
  1770.             if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}   /* can not be added to shape library : rotate / mouse issues */
  1771.             for(i=0;i<6;i++){
  1772.                 switch(i){
  1773.                     case 0: font_color = get_color(infile,0);break;/* name or hex color */
  1774.                     case 1: int_data[0] = x2px(get_real(infile,0));break; /* x */
  1775.                     case 2: int_data[1] = y2px(get_real(infile,0));break; /* y */
  1776.                     case 3: double_data[0] = get_real(infile,0);break;/* rotation */
  1777.                     case 4: decimals = find_number_of_digits(precision);
  1778.                             temp = get_string_argument(infile,1);
  1779.                             string_length = snprintf(NULL,0,"draw_text(%d,%d,%d,%d,\"%s\",\"%s\",%.2f,%.2f,\"%s\",%d,%.2f,%d,%s);\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);
  1780.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1781.                             snprintf(tmp_buffer,string_length,"draw_text(%d,%d,%d,%d,\"%s\",\"%s\",%.2f,%.2f,\"%s\",%d,%.2f,%d,%s);\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);
  1782.                             add_to_buffer(tmp_buffer);
  1783.                             break;
  1784.                     default:break;
  1785.                 }
  1786.             }
  1787.             reset();
  1788.             break;
  1789.         case STRING:
  1790.         /*
  1791.          @ string color,x,y,the text string
  1792.          @ may be set "onclick" or "drag xy"
  1793.          @ unicode supported: string red,0,0,\\u2232
  1794.          @ use a command like 'fontfamily italic 24px Ariel' <br />to set fonts on browser that support font change
  1795.         */
  1796.             for(i=0;i<5;i++){
  1797.                 switch(i){
  1798.                     case 0: stroke_color = get_color(infile,0);break;/* name or hex color */
  1799.                     case 1: double_data[0] = get_real(infile,0);break; /* x in xrange*/
  1800.                     case 2: double_data[1] = get_real(infile,0);break; /* y in yrange*/
  1801.                     case 3: decimals = find_number_of_digits(precision);
  1802.                         temp = get_string_argument(infile,1);
  1803.                         decimals = find_number_of_digits(precision);
  1804.                         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));\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);
  1805.                         click_cnt++;reset();break;
  1806.                     default:break;
  1807.                 }
  1808.             }
  1809.             break;
  1810.         case CENTERSTRING:
  1811.         /*
  1812.          @ centerstring color,y-value,the text string
  1813.          @ title color,y-value,the text string
  1814.          @ draw a string centered on the canvas at y = y-value
  1815.          @ can not set "onclick" or "drag xy" (...)
  1816.          @ unicode supported: centerstring red,5,\\u2232
  1817.          @ use a command like 'fontfamily italic 24px Ariel' <br />to set fonts on browser that support font change
  1818.         */
  1819.             if( js_function[DRAW_CENTERSTRING] != 1 ){ js_function[DRAW_CENTERSTRING] = 1;}
  1820.             for(i=0;i<3;i++){
  1821.                 switch(i){
  1822.                     case 0: stroke_color = get_color(infile,0);break;/* name or hex color */
  1823.                     case 1: double_data[0] = get_real(infile,0);break; /* y in xrange*/
  1824.                     case 2: temp = get_string_argument(infile,1);
  1825.                             /* draw_text = function(canvas_type,y,font_family,stroke_color,stroke_opacity,text) */
  1826.                             decimals = find_number_of_digits(precision);
  1827.                             string_length = snprintf(NULL,0,
  1828.                             "draw_centerstring(%d,%.*f,\"%s\",\"%s\",%.2f,\"%s\");\n",canvas_root_id,decimals,double_data[0],font_family,stroke_color,stroke_opacity,temp);
  1829.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1830.                             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);
  1831.                             add_to_buffer(tmp_buffer);
  1832.                             break;
  1833.                     default:break;
  1834.                 }
  1835.             }
  1836.             break;
  1837.         case MATHML:
  1838.         /*
  1839.         @ mathml x1,y1,x2,y2,mathml_string
  1840.         @ mathml will be displayed in a rectangle left top (x1:y1) , right bottom (x2:y2)
  1841.         @ can be set onclick <br />(however dragging is not supported)<br />javascript:read_dragdrop(); will return click number of mathml-object
  1842.         @ 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 />attention: if after this mathml-input object other user-interactions are included, these will read mathml too using "read_canvas();"
  1843.         @ 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....
  1844.  
  1845.         */
  1846.             if( js_function[DRAW_XML] != 1 ){ js_function[DRAW_XML] = 1;}
  1847.             for(i=0;i<5;i++){
  1848.                 switch(i){
  1849.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in x/y-range coord system -> pixel width */
  1850.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in x/y-range coord system  -> pixel height */
  1851.                     case 2: int_data[2]=x2px(get_real(infile,0)) - int_data[0];break; /* width in x/y-range coord system -> pixel width */
  1852.                     case 3: int_data[3]=y2px(get_real(infile,0)) - int_data[1];break; /* height in x/y-range coord system  -> pixel height */
  1853.                     case 4: decimals = find_number_of_digits(precision);
  1854.                             if(onclick == 1 ){ onclick = click_cnt;click_cnt++;}
  1855.                             temp = get_string(infile,1);
  1856.                             if( strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\"","'"); }
  1857.                             string_length = snprintf(NULL,0,"draw_xml(%d,%d,%d,%d,%d,\"%s\",%d);\n",canvas_root_id,int_data[0],int_data[1],int_data[2],int_data[3],temp,onclick);
  1858.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1859.                             snprintf(tmp_buffer,string_length,"draw_xml(%d,%d,%d,%d,%d,\"%s\",%d);\n",canvas_root_id,int_data[0],int_data[1],int_data[2],int_data[3],temp,onclick);
  1860.                             add_to_buffer(tmp_buffer);
  1861.                             /*
  1862.                              in case inputs are present , trigger adding the read_mathml()
  1863.                              if no other reply_format is defined
  1864.                              note: all other reply types will include a reading of elements with id='mathml'+p)
  1865.                              */
  1866.                             if(strstr(temp,"mathml0") != NULL){
  1867.                              if(reply_format == 0 ){reply_format = 16;} /* no other reply type is defined */
  1868.                             }
  1869.                             break;
  1870.                     default:break;
  1871.                 }
  1872.             }
  1873.             reset();
  1874.             break;
  1875.         case HTTP:
  1876.         /*
  1877.          @http x1,y1,x2,y2,http://some_adress.com
  1878.          @an active html-page will be displayed in an "iframe" rectangle left top (x1:y1) , right bottom (x2:y2)
  1879.          @do not use interactivity (or mouse) if the mouse needs to be active in the iframe
  1880.          @can not be 'set onclick' or 'drag xy'
  1881.         */
  1882.             if( js_function[DRAW_HTTP] != 1 ){ js_function[DRAW_HTTP] = 1;}
  1883.             for(i=0;i<5;i++){
  1884.                 switch(i){
  1885.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in x/y-range coord system -> pixel width */
  1886.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in x/y-range coord system  -> pixel height */
  1887.                     case 2: int_data[2]=x2px(get_real(infile,0)) - int_data[0];break; /* width in x/y-range coord system -> pixel width */
  1888.                     case 3: int_data[3]=y2px(get_real(infile,0)) - int_data[1];break; /* height in x/y-range coord system  -> pixel height */
  1889.                     case 4: decimals = find_number_of_digits(precision);
  1890.                             temp = get_string(infile,1);
  1891.                             if(strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\"","'");}
  1892.                             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);
  1893.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1894.                             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);
  1895.                             add_to_buffer(tmp_buffer);
  1896.                     break;
  1897.                 }
  1898.             }
  1899.             reset();
  1900.             break;
  1901.         case HTML:
  1902.         /*
  1903.          @ html x1,y1,x2,y2,html_string
  1904.          @ all tags are allowed
  1905.          @ can be set onclick <br />(dragging not supported)<br />javascript:read_dragdrop(); will return click number of mathml-object
  1906.          @ if inputfields are incorporated  (with id's : id='mathml0',id='mathml1',...id='mathml_n')<br />the user_input values will be read by javascript:read_canvas(); <br />If other inputfields (command input / command textarea) or userdraw is performed, these values will NOT be read as well.
  1907.  
  1908.          note: uses the same code as 'mathml'
  1909.         */
  1910.             break;
  1911.         case X_AXIS_STRINGS:
  1912.         /*
  1913.          @ xaxis num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1914.          @ xaxistext num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1915.          @ use these x-axis values in stead of default xmin...xmax
  1916.          @ use command "fontcolor", "fontsize" , "fontfamily" to adjust font <br />defaults: black,12,Ariel
  1917.          @ if the 'x-axis words' are to big amd will overlap, a simple alternating offset will be applied
  1918.          @ example:<br />size 400,400<br />xrange 0,13<br />yrange -100,500<br />axis<br />xaxis 1:january:2:february:3:march:5:may:6:june:7:july:8:august:9:september:10:october:11:november:12:december<br />#'xmajor' steps should be synchronised with numbers eg. "1" in this example<br />grid 1,100,grey,1,4,6,grey
  1919.          @ example:<br />size 400,400<br />xrange -5*pi,5*pi<br />yrange -100,500<br />axis<br />xaxis -4*pi:-4\\u03c0:-3*pi:-3\\u03c0:-2*pi:-2\\u03c0:-1*pi:-\\u03c0:0:0:pi:\\u03c0:2*pi:2\\u03c01:3*pi:3\\u03c0:4*pi:4\\u03c0<br />#'xmajor' steps should be synchronised with numbers eg. "1" in this example<br />grid pi,1,grey,1,3,6,grey
  1920.         */
  1921.             temp = get_string(infile,1);
  1922.             if( strstr(temp,":") != 0 ){ temp = str_replace(temp,":","\",\"");}
  1923.             if( strstr(temp,"pi") != 0 ){ temp = str_replace(temp,"pi","(3.1415927)");}/* we need to replace pi for javascript y-value*/
  1924.             fprintf(js_include_file,"x_strings = [\"%s\"];\n ",temp);
  1925.             use_axis_numbering = 1;
  1926.             break;
  1927.         case Y_AXIS_STRINGS:
  1928.         /*
  1929.          @ yaxis num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1930.          @ yaxistext num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1931.          @ use command "fontcolor", "fontsize" , "fontfamily" to adjust font <br />defaults: black,12,Ariel
  1932.          @ use these y-axis values in stead of default ymin...ymax
  1933.          @ example:<br />size 400,400<br />yrange 0,13<br />xrange -100,500<br />axis<br />yaxis 1:january:2:february:3:march:5:may:6:june:7:july:8:august:9:september:10:october:11:november:12:december<br />#'ymajor' steps should be synchronised with numbers eg. "1" in this example<br />grid 100,1,grey,4,1,6,grey
  1934.         */
  1935.             temp = get_string(infile,1);
  1936.             if( strstr(temp,":") != 0 ){ temp = str_replace(temp,":","\",\"");}
  1937.             if( strstr(temp,"pi") != 0 ){ temp = str_replace(temp,"pi","(3.1415927)");}/* we need to replace pi for javascript y-value*/
  1938.             fprintf(js_include_file,"y_strings = [\"%s\"];\n ",temp);
  1939.             use_axis_numbering = 1;
  1940.             break;
  1941.  
  1942.         case AXIS_NUMBERING:
  1943.         /*
  1944.             @ axisnumbering
  1945.             @ keyword, no arguments required
  1946.         */
  1947.             use_axis_numbering = 1;
  1948.             break;
  1949.         case AXIS:
  1950.         /*
  1951.             @ axis
  1952.             @ keyword, no arguments required
  1953.  
  1954.         */
  1955.             use_axis = TRUE;
  1956.             break;
  1957.         case KILLSLIDER:
  1958.         /*
  1959.          @ killslider
  1960.          @ keyword, no arguments required
  1961.          @ ends grouping of object under a preciously defined slider
  1962.         */
  1963.             slider = 0;
  1964.             break;
  1965.         case SLIDER:
  1966.         /*
  1967.         @ slider start_value,end_value,width px,height px,type,label
  1968.         @ type: xy,x,y,angle
  1969.         @ if a value display is desired, use<br />type:xy display,x display,y display,angle radian,angle degree
  1970.         @ is a unit for x / y value display is needed, use commands 'xunit' and / or 'yunit'
  1971.         @ use commmand 'slider' before draggable/clickable objects.
  1972.         @ 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'
  1973.         @ amount of sliders is not limited.
  1974.         @ javascript:read_dragdrop(); will return an array with 'object_number:slider_value'
  1975.         @ type=xy: will produce a 2D 'slider' [rectangle width x heigh px] in your web page
  1976.         @ every draggable object may have it's own slider (no limit in amount of sliders)
  1977.         @ label: some slider text
  1978.         @ use fillcolor for slider ball
  1979.         @ use strokecolor for slider bar
  1980.         @ use fontfamily / fontcolor to set used fonts
  1981.         @ use opacity (only fill opacity will be used) to set transparency
  1982.         @ the slider canvas will be added to the 'tooltip div' : so incompatible with command tooltip ; setlimits etc
  1983.         */
  1984.             for(i=0; i<6 ; i++){
  1985.                 switch(i){
  1986.                     case 0: double_data[0] = get_real(infile,0);break; /* start value */
  1987.                     case 1: double_data[1] = get_real(infile,0);break; /* end value */
  1988.                     case 2: int_data[0] = (int)(get_real(infile,0));break; /* width */
  1989.                     case 3: int_data[1] = (int)(get_real(infile,0));break; /* height */
  1990.                     case 4: temp = get_string_argument(infile,0); /* type : xy,x,y,angle */
  1991.                     /* xy display*/
  1992.                     if(strstr(temp,"xy")!= 0){
  1993.                      slider = 4;
  1994.                     }
  1995.                     else
  1996.                     {
  1997.                      if(strstr(temp,"x") != 0){
  1998.                       slider = 1;
  1999.                      }
  2000.                      else
  2001.                      {
  2002.                       if(strstr(temp,"y") != 0){
  2003.                        slider = 2;
  2004.                       }
  2005.                       else
  2006.                       {
  2007.                        if(strstr(temp,"angle") != 0){ /* angle diplay radian */
  2008.                         slider = 3;
  2009.                        }
  2010.                        else
  2011.                        {
  2012.                         canvas_error("slider types may be : x , y , xy , angle");
  2013.                        }
  2014.                       }
  2015.                      }
  2016.                     }
  2017.                     if(strstr(temp,"display")!=0){
  2018.                      use_slider_display = 1; /* show x xy values in canvas window */
  2019.                     }
  2020.                     else
  2021.                     {
  2022.                      if(strstr(temp,"degree")!= 0){
  2023.                       use_slider_display = 2; /* show angle values in canvas window */
  2024.                      }
  2025.                      else
  2026.                      {
  2027.                       if(strstr(temp,"radian")!=0){
  2028.                        use_slider_display = 3; /* show radian values in canvas window */
  2029.                       }
  2030.                      }
  2031.                     }
  2032.                     if(use_slider_display != 0 && slider_cnt == 0){ /*add just once the display js-code */
  2033.                      add_slider_display(js_include_file,canvas_root_id,precision,font_size,font_color,stroke_opacity);
  2034.                     }
  2035.                     break;
  2036.                     case 5: /* some string used for slider description  */
  2037.                     slider_cnt++;
  2038.                     if(slider == 4){
  2039.                      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 );
  2040.                     }else{
  2041.                      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);
  2042.                     }
  2043.                     break;
  2044.                 }
  2045.              }
  2046.             break;
  2047.         case SGRAPH:
  2048.         /*
  2049.          @ sgraph xstart,ystart,xmajor,ymajor,xminor,yminor,majorgrid_color,minorgrid_color
  2050.          @ primitive implementation of a 'broken scale' graph...
  2051.          @ 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 />
  2052.          @ example:<br />size 400,400<br />xrange 0,10000<br />yrange 0,100<br />sgraph 9000,50,100,10,4,4,grey,blue<br />userinput_xy<br />linewidth 2<br />userdraw segments,red
  2053.         */
  2054.             if( js_function[DRAW_SGRAPH] != 1 ){ js_function[DRAW_SGRAPH] = 1;}
  2055.             for(i = 0 ; i < 8 ;i++){
  2056.                 switch(i){
  2057.                     case 0:double_data[0] = get_real(infile,0);break;
  2058.                     case 1:double_data[1] = get_real(infile,0);break;
  2059.                     case 2:double_data[2] = get_real(infile,0);break;
  2060.                     case 3:double_data[3] = get_real(infile,0);break;
  2061.                     case 4:int_data[0] = (int)(get_real(infile,0));break;
  2062.                     case 5:int_data[1] = (int)(get_real(infile,0));break;
  2063.                     case 6:stroke_color = get_color(infile,0);break;
  2064.                     case 7:font_color = get_color(infile,1);
  2065.                     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);
  2066.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2067.                     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);
  2068.                     add_to_buffer(tmp_buffer);
  2069.                     break;
  2070.                     default:break;
  2071.                 }
  2072.             }
  2073.             /* sgraph(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily,opacity)*/
  2074.             break;
  2075.         case GRID:/* xmajor,ymajor,color [,xminor,yminor,tick length (px) ,color]*/
  2076.         /*
  2077.          @ grid step_x,step_y,gridcolor
  2078.          @ use command "fontcolor", "fontsize" , "fontfamily" to adjust font <br />defaults: black,12,Ariel
  2079.          @ if keywords "axis" or "axisnumbering" 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
  2080.          @ 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)
  2081.          @ can not be set "onclick" or "drag xy"
  2082.          @ use commands 'xlabel some_string' and/or 'ylabel some_string' to label axis;<br />use command "fontsize" to adjust size (the font family is non-configurable 'italic your_fontsize px Ariel')
  2083.          @ see commands "xaxis" or "xaxistext", "yaxis" or "yaxistext" to set tailormade values on axis (the used font is set by command fontfamily; default '12px Ariel')
  2084.          @ see command "legend" to set a legend for the graph ;<br />use command "fontsize" to adjust size (the font family is non-configurable 'bold your_fontsize px Ariel')
  2085.         */
  2086.             if( js_function[DRAW_YLOGSCALE] == 1 ){canvas_error("only one grid type is allowed...");}
  2087.             if( js_function[DRAW_GRID] != 1 ){ js_function[DRAW_GRID] = 1;}
  2088.             for(i=0;i<4;i++){
  2089.                 switch(i){
  2090.                     case 0:double_data[0] = get_real(infile,0);break;/* xmajor */
  2091.                     case 1:double_data[1] = get_real(infile,0);break;/* ymajor */
  2092.                     case 2:
  2093.                     if( use_axis == TRUE ){
  2094.                         stroke_color = get_color(infile,0);
  2095.                         done = FALSE;
  2096.                         int_data[0] = (int) (get_real(infile,0));/* xminor */
  2097.                         int_data[1] = (int) (get_real(infile,0));/* yminor */
  2098.                         int_data[2] = (int) (get_real(infile,0));/* tic_length */
  2099.                         fill_color = get_color(infile,1); /* used as axis_color*/
  2100.                     }
  2101.                     else
  2102.                     {
  2103.                         int_data[0] = 1;
  2104.                         int_data[1] = 1;
  2105.                         stroke_color = get_color(infile,1);
  2106.                         fill_color = stroke_color;
  2107.                     }
  2108.                     if( double_data[0] <= 0 ||  double_data[1] <= 0 ||  int_data[0] <= 0 ||  int_data[1] <= 0 ){canvas_error("major or minor tickt must be positive !");}
  2109.                     /* set snap_x snap_y values in pixels */
  2110.                     fprintf(js_include_file,"snap_x = %f;snap_y = %f;",double_data[0] / int_data[0],double_data[1] / int_data[1]);
  2111.                     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);
  2112.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2113.                     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);
  2114.                     add_to_buffer(tmp_buffer);
  2115.                     break;
  2116.                 }
  2117.             }
  2118.             reset();
  2119.             break;
  2120.         case OPACITY:
  2121.         /*
  2122.         @ opacity 0-255,0-255
  2123.         @
  2124.         */
  2125.             for(i = 0 ; i<2;i++){
  2126.                 switch(i){
  2127.                     case 0: double_data[0]=(int)(get_real(infile,0));break;
  2128.                     case 1: double_data[1]=(int)(get_real(infile,1));break;
  2129.                     default: break;
  2130.                 }
  2131.             }
  2132.             if( double_data[0] < 0 || double_data[0] > 255 || double_data[1] < 0 || double_data[1] > 255  ){ canvas_error("opacity [0 - 255] , [0 - 255]");}/* typo or non-RGB ? */
  2133.             stroke_opacity = (double) (0.0039215*double_data[0]);/* 0.0 - 1.0 */
  2134.             fill_opacity = (double) (0.0039215*double_data[1]);/* 0.0 - 1.0 */
  2135.             break;
  2136.         case ROTATE:
  2137.         /*
  2138.          @rotate rotation_angle
  2139.          @angle in degrees
  2140.         */
  2141.             use_rotate = TRUE;
  2142.             angle = -1*(get_real(infile,1));/* -1 : to be compatible with Flydraw... */
  2143.             break;
  2144.         case KILLAFFINE:
  2145.         /*
  2146.         @ killaffine
  2147.         @ keyword : resets the transformation matrix to 1,0,0,1,0,0
  2148.         */
  2149.             use_affine = FALSE;
  2150.             snprintf(affine_matrix,14,"[1,0,0,1,0,0]");
  2151.             break;
  2152.         case AFFINE:
  2153.         /*
  2154.          @affine a,b,c,d,tx,ty
  2155.          @ defines a transformation matrix for subsequent objects
  2156.          @ use keyword 'killaffine' to end the transformation
  2157.          @ note 1: only 'draggable' / 'noclick' objects can be transformed.
  2158.          @ note 2: do not use 'onclick' or 'drag xy' with tranformation objects : the mouse coordinates do not get transformed (yet)
  2159.          @ note 3: no matrix operations on the transformation matrix implemented (yet)
  2160.          @ a : Scales the drawings horizontally
  2161.          @ b : Skews the drawings horizontally
  2162.          @ c : Skews the drawings vertically
  2163.          @ d : Scales the drawings vertically
  2164.          @ tx: Moves the drawings horizontally in xrange coordinate system
  2165.          @ ty: Moves the drawings vertically in yrange coordinate system
  2166.          @ the data precision is 2 decimals (printf : %2.f)
  2167.         */
  2168.             for(i = 0 ; i<6;i++){
  2169.                 switch(i){
  2170.                     case 0: double_data[0] = get_real(infile,0);break;
  2171.                     case 1: double_data[1] = get_real(infile,0);break;
  2172.                     case 2: double_data[2] = get_real(infile,0);break;
  2173.                     case 3: double_data[3] = get_real(infile,0);break;
  2174.                     case 4: double_data[4] = get_real(infile,0);break;
  2175.                     case 5: double_data[5] = get_real(infile,1);
  2176.                         use_affine = TRUE;
  2177.                         string_length = snprintf(NULL,0,     "[%.2f,%.2f,%.2f,%.2f,%.2f,%.2f] ",double_data[0],double_data[1],double_data[2],double_data[3],double_data[4]*xsize/(xmax - xmin),-1*double_data[5]*ysize/(ymax - ymin));
  2178.                         check_string_length(string_length);affine_matrix = my_newmem(string_length+1);
  2179.                         snprintf(affine_matrix,string_length,"[%.2f,%.2f,%.2f,%.2f,%.2f,%.2f] ",double_data[0],double_data[1],double_data[2],double_data[3],double_data[4]*xsize/(xmax - xmin),-1*double_data[5]*ysize/(ymax - ymin));
  2180.                         break;
  2181.                     default: break;
  2182.                 }
  2183.             }
  2184.         break;
  2185.         case KILLTRANSLATION:
  2186.         /*
  2187.          killtranslation
  2188.         */
  2189.             use_affine = FALSE;
  2190.             snprintf(affine_matrix,14,"[1,0,0,1,0,0]");
  2191.             break;
  2192.         case TRANSLATION:
  2193.         /*
  2194.          @translation tx,ty
  2195.          @will translate the next object tx in xrange and ty in yrange
  2196.          @uase command 'killtranstation' to end the command
  2197.         */
  2198.             for(i = 0 ; i<2;i++){
  2199.                 switch(i){
  2200.                     case 0: double_data[0] = get_real(infile,0);break;
  2201.                     case 1: double_data[1] = get_real(infile,1);
  2202.                         use_affine = TRUE;
  2203.                         string_length = snprintf(NULL,0, "[1,0,0,1,%.2f,%.2f] ",double_data[0]*xsize/(xmax - xmin),-1*double_data[1]*ysize/(ymax - ymin));
  2204.                         check_string_length(string_length);affine_matrix = my_newmem(string_length+1);
  2205.                         snprintf(affine_matrix,string_length,"[1,0,0,1,%.2f,%.2f] ",double_data[0]*xsize/(xmax - xmin),-1*double_data[1]*ysize/(ymax - ymin));
  2206.                         break;
  2207.                     default: break;
  2208.                 }
  2209.             }
  2210.         break;
  2211.  
  2212.         case DASHED:
  2213.         /*
  2214.         @ keyword "dashed"
  2215.         @ next object will be drawn with a dashed line
  2216.         @ change dashing scheme by using command "dashtype int,int)
  2217.         */
  2218.             use_dashed = TRUE;
  2219.             break;
  2220.         case FILLED:
  2221.         /*
  2222.         @ keyword "filled"
  2223.         @ the next 'fillable' object (only) will be filled
  2224.         @ use command "fillcolor color" to set fillcolor
  2225.         @ use command "opacity 0-255,0-255" to set stroke and fill-opacity
  2226.         @ 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 !
  2227.         */
  2228.             use_filled = TRUE;
  2229.             break;
  2230.         case STYLE:
  2231.         /*
  2232.          @highlight color,opacity,linewidth
  2233.          @ NOT IMPLEMENTED
  2234.          @ use command "onclick" : when the object receives a userclick it will increase it's linewidth
  2235.         */
  2236.             break;
  2237.         case FILLCOLOR:
  2238.         /*
  2239.         @ fillcolor colorname or #hex
  2240.         @ Set the color for a filled object : mainly used for command 'userdraw obj,stroke_color'
  2241.         @ All fillable massive object will have a fillcolor == strokecolor (just to be compatible with flydraw...)
  2242.         */
  2243.             fill_color = get_color(infile,1);
  2244.             break;
  2245.         case STROKECOLOR:
  2246.         /*
  2247.         @ strokecolor colorname or #hex
  2248.         @ to be used for commands that do not supply a color argument (like command 'linegraph')
  2249.         */
  2250.             stroke_color = get_color(infile,1);
  2251.             break;
  2252.         case BGIMAGE:
  2253.         /*
  2254.          @bgimage image_location
  2255.          @use an image as background .<br />(we use the background of 'canvas_div' )
  2256.          @the background image will be resized to match "width = xsize" and "height = ysize"
  2257.         */
  2258.         URL = get_string(infile,1);
  2259.         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);
  2260.             break;
  2261.         case BGCOLOR:
  2262.         /*
  2263.          @bgcolor colorname or #hex
  2264.          @use this color as background of the "div" containing the canvas(es)
  2265.         */
  2266.         /* [255,255,255]*/
  2267.             bgcolor = get_string(infile,1);
  2268.             if(strstr(bgcolor,"#") == NULL){ /* convert colorname -> #ff00ff */
  2269.                 int found = 0;
  2270.                 for( i = 0; i < NUMBER_OF_COLORNAMES ; i++ ){
  2271.                     if( strcmp( colors[i].name , bgcolor ) == 0 ){
  2272.                         bgcolor = colors[i].hex;
  2273.                         found = 1;
  2274.                         break;
  2275.                     }
  2276.                 }
  2277.                 if(found == 0){canvas_error("your bgcolor is not in my rgb.txt data list : use hexcolor...something like #a0ffc4");}
  2278.             }
  2279.             fprintf(js_include_file,"<!-- set background color of canvas div -->\ncanvas_div.style.backgroundColor = \"%s\";canvas_div.style.opacity = %f;\n",bgcolor,fill_opacity);
  2280.             break;
  2281.         case COPY:
  2282.         /*
  2283.         @ copy x,y,x1,y1,x2,y2,[filename URL]
  2284.         @ Insert the region from (x1,y1) to (x2,y2) (in pixels) of [filename] to (x,y) in x/y-range
  2285.         @ If x1=y1=x2=y2=-1, the whole [filename URL] is copied.
  2286.         @ [filename] is the URL of the image
  2287.         @ URL is normal URL of network reachable image file location<br />(eg special url for 'classexo' not -yet- implemented)
  2288.         @ if command 'drag x/y/xy' 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 valuid for the next image<br />draggable / non-draggable images may be mixed
  2289.         @ if you want to draw / userdraw  on an "imported" image, make sure it is transparent.<br />for example GNUPlot: set terminal gif transparent
  2290.  
  2291.         context.drawImage(img,sx,sy,swidth,sheight,x,y,width,height);
  2292.         draw_external_image(canvas_type,URL,sx,sy,swidth,sheight,x,y,width,height,drag_drop){
  2293.         */
  2294.             for(i = 0 ; i<7;i++){
  2295.                 switch(i){
  2296.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x left top corner in x/y range  */
  2297.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y left top corner in x/y range */
  2298.                     case 2: int_data[2]=(int)(get_real(infile,0));break;/* x1 in px of external image */
  2299.                     case 3: int_data[3]=(int)(get_real(infile,0));break;/* y1 in px of external image */
  2300.                     case 4: int_data[4]=(int)(get_real(infile,0));break;/* x2 --> width  */
  2301.                     case 5: int_data[5]=(int)(get_real(infile,0)) ;break;/* y2 --> height */
  2302.                     case 6: URL = get_string(infile,1);
  2303.                             int_data[6] = int_data[4] - int_data[2];/* swidth & width (if not scaling )*/
  2304.                             int_data[7] = int_data[5] - int_data[3];/* sheight & height (if not scaling )*/
  2305.                             if( drag_type > -1 ){
  2306.                                 if( js_function[DRAG_EXTERNAL_IMAGE] != 1 ){ js_function[DRAG_EXTERNAL_IMAGE] = 1;}
  2307.                                 if(reply_format == 0 ){reply_format = 20;}
  2308.                                 string_length = snprintf(NULL,0,"drag_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,%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,1);
  2309.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2310.                                 snprintf(tmp_buffer,string_length,"drag_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,%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,1);
  2311.                                 drag_type = -1;
  2312.                                 ext_img_cnt++;
  2313.                             }
  2314.                             else
  2315.                             {
  2316.                                 if( js_function[DRAW_EXTERNAL_IMAGE] != 1 ){ js_function[DRAW_EXTERNAL_IMAGE] = 1;}
  2317.                                 /*
  2318.                                 draw_external_image = function(URL,sx,sy,swidth,sheight,x0,y0,width,height,draggable){\n\
  2319.                                 */
  2320.                                 string_length = snprintf(NULL,0,"draw_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,0);\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]);
  2321.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2322.                                 snprintf(tmp_buffer,string_length,"draw_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,0);\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]);
  2323.                             }
  2324.                             add_to_buffer(tmp_buffer);
  2325.                             break;
  2326.                     default: break;
  2327.                 }
  2328.             }
  2329.             reset();
  2330.             break;
  2331. /*
  2332. context.drawImage(img,sx,sy,swidth,sheight,x,y,width,height);
  2333. img     Specifies the image, canvas, or video element to use
  2334. sx      The x coordinate where to start clipping : x1 = int_data[0]
  2335. sy      The y coordinate where to start clipping : x2 = int_data[1]
  2336. swidth  The width of the clipped image : int_data[2] - int_data[0]
  2337. sheight The height of the clipped image : int_data[3] - int_data[1]
  2338. x       The x coordinate where to place the image on the canvas : dx1 = int_data[4]
  2339. y       The y coordinate where to place the image on the canvas : dy1 = int_data[5]
  2340. width   The width of the image to use (stretch or reduce the image) : dx2 - dx1 = int_data[6]
  2341. height  The height of the image to use (stretch or reduce the image) : dy2 - dy1 = int_data[7]
  2342. */
  2343.         case COPYRESIZED:
  2344.         /*
  2345.         @ copyresized x1,y2,x2,y2,dx1,dy1,dx2,dy2,image_file_url
  2346.         @ 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
  2347.         @ If x1=y1=x2=y2=-1, the whole [filename / URL ] is copied and resized.
  2348.         @ URL is normal URL of network reachable image file location<br />(eg special url for 'classexo' not -yet- implemented)
  2349.         @ if command 'drag x/y/xy' 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 valuid for the next image<br />draggable / non-draggable images may be mixed
  2350.         @ if you want to draw / userdraw  on an "imported" image, make sure it is transparent.<br />for example GNUPlot: set terminal gif transparent
  2351.         */
  2352.             for(i = 0 ; i<9;i++){
  2353.                 switch(i){
  2354.                     case 0: int_data[0] = (int)(get_real(infile,0));break; /* x1 */
  2355.                     case 1: int_data[1] = (int)(get_real(infile,0));break; /* y1 */
  2356.                     case 2: int_data[2] = (int)(get_real(infile,0));break;/* x2 */
  2357.                     case 3: int_data[3] = (int)(get_real(infile,0));break;/* y2 */
  2358.                     case 4: int_data[4] = x2px(get_real(infile,0));break;/* dx1 */
  2359.                     case 5: int_data[5] = y2px(get_real(infile,0));break;/* dy1 */
  2360.                     case 6: int_data[6] = x2px(get_real(infile,0));break;/* dx2 */
  2361.                     case 7: int_data[7] = y2px(get_real(infile,0));break;/* dy2 */
  2362.                     case 8: URL = get_string(infile,1);
  2363.                             if( drag_type > -1 ){
  2364.                                 if( js_function[DRAG_EXTERNAL_IMAGE] != 1 ){ js_function[DRAG_EXTERNAL_IMAGE] = 1;}
  2365.                                 if(reply_format == 0 ){reply_format = 20;}
  2366.                                 string_length = snprintf(NULL,0,"drag_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,%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,1);
  2367.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2368.                                 snprintf(tmp_buffer,string_length,"drag_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,%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,1);
  2369.                                 drag_type = -1;
  2370.                                 ext_img_cnt++;
  2371.                             }
  2372.                             else
  2373.                             {
  2374.                                 if( js_function[DRAW_EXTERNAL_IMAGE] != 1 ){ js_function[DRAW_EXTERNAL_IMAGE] = 1;}
  2375.                                 string_length = snprintf(NULL,0,"draw_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,0);\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]);
  2376.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2377.                                 snprintf(tmp_buffer,string_length,"draw_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,0);\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]);
  2378.                             }
  2379.                             add_to_buffer(tmp_buffer);
  2380.                     default: break;
  2381.                 }
  2382.             }
  2383.             reset();
  2384.             break;
  2385.         case CLEARBUTTON:
  2386.         /*
  2387.          @clearbutton value
  2388.          @adds a button to clear the userdraw canvas with text 'value'
  2389.          @normally userdraw 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
  2390.          @uses the tooltip placeholder div element: may not be used with command 'intooltip'
  2391.          @use command 'inputstyle' to style the button...
  2392.         */
  2393.             add_clear_button(js_include_file,canvas_root_id,input_style,get_string(infile,1));
  2394.         break;
  2395.         case INPUTSTYLE:
  2396.         /*
  2397.         @ inputstyle style_description
  2398.         @ example: inputstyle color:blue;font-weight:bold;font-style:italic;font-size:16pt
  2399.         */
  2400.             input_style = get_string(infile,1);
  2401.             break;
  2402.         case INPUT:
  2403.         /*
  2404.          @ input x,y,size,editable,value
  2405.          @ to set inputfield "readonly", use editable = 0
  2406.          @ only active inputfields (editable = 1) will be read with read_canvas();
  2407.          @ if "$status=done"  (e.g. in answer.phtml) the inputfield will be clearedand set readonly<br />Override this by keyword 'status'
  2408.          @ may be further controlled by "inputstyle" (inputcss is not yet implemented...)
  2409.          @ if mathml inputfields are present and / or some userdraw is performed, these data will NOT be send as well (javascript:read_canvas();)
  2410.         */
  2411.         if( js_function[DRAW_INPUTS] != 1 ){ js_function[DRAW_INPUTS] = 1;}
  2412.             for(i = 0 ; i<5;i++){
  2413.                 switch(i){
  2414.                     case 0: int_data[0]=x2px(get_real(infile,0));break;/* x in px */
  2415.                     case 1: int_data[1]=y2px(get_real(infile,0));break;/* y in px */
  2416.                     case 2: int_data[2]=abs( (int)(get_real(infile,0)));break; /* size */
  2417.                     case 3: if( get_real(infile,1) >0){int_data[3] = 1;}else{int_data[3] = 0;};break; /* readonly */
  2418.                     case 4:
  2419.                             temp = get_string_argument(infile,1);
  2420.                             string_length = snprintf(NULL,0,  "draw_inputs(%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],input_style,temp);
  2421.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2422.                             snprintf(tmp_buffer,string_length,"draw_inputs(%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],input_style,temp);
  2423.                             add_to_buffer(tmp_buffer);
  2424.                             input_cnt++;break;
  2425.                     default: break;
  2426.                 }
  2427.             }
  2428.             if(reply_format == 0 ){reply_format = 15;}
  2429.             reset();
  2430.             break;
  2431.         case TEXTAREA:
  2432.         /*
  2433.          @ textarea x,y,cols,rows,readonly,value
  2434.          @ may be further controlled by "inputstyle"
  2435.          @ if "$status=done"  (e.g. in answer.phtml) the inputfield will be clearedand set readonly<br />Override this by keyword 'status'
  2436.          @ if mathml inputfields are present and / or some userdraw is performed, these data will NOT be send as well (javascript:read_canvas();)
  2437.         */
  2438.             if( js_function[DRAW_TEXTAREAS] != 1 ){ js_function[DRAW_TEXTAREAS] = 1;}
  2439.             for(i = 0 ; i<6;i++){
  2440.                 switch(i){
  2441.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in px */
  2442.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in px */
  2443.                     case 2: int_data[2]=abs( (int)(get_real(infile,0)));break;/* cols */
  2444.                     case 3: int_data[3]=abs( (int)(get_real(infile,0)));break;/* rows */
  2445.                     case 4: if( get_real(infile,1) >0){int_data[4] = 1;}else{int_data[3] = 0;};break; /* readonly */
  2446.                     case 5: temp = get_string_argument(infile,1);
  2447.                             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);
  2448.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2449.                             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);
  2450.                             add_to_buffer(tmp_buffer);
  2451.                             input_cnt++;break;
  2452.                     default: break;
  2453.                 }
  2454.             }
  2455.             if(reply_format == 0 ){reply_format = 15;}
  2456.             reset();
  2457.             break;
  2458.         case MOUSE_PRECISION:
  2459.         /*
  2460.             @ precision int
  2461.             @ 1 = no decimals ; 10 = 1 decimal ; 100 = 2 decimals etc
  2462.             @ may be used / changed before every object
  2463.             @ In case of user interaction (like 'userdraw') this value will be used to determine the amount of decimals in the reply / answer
  2464.         */
  2465.             precision = (int) (get_real(infile,1));
  2466.             if(precision < 1 ){precision = 1;};
  2467.             break;
  2468.         case SETLIMITS:
  2469.         /*
  2470.             @setlimits
  2471.             @keyword : if set, it will produce 4 inputfields for 'xmin,xmax,ymin,ymax' and an 'ok' button
  2472.             @may be used for inputfield based zooming / panning
  2473.             @use command xlabel / ylabel to change text from xmin to 'xlabel'min etc
  2474.             @note:the input value will not be checked on validity
  2475.         */
  2476.             if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  2477.             add_setlimits(js_include_file,canvas_root_id);
  2478.             /* add_setlimits provides 'fprintf(js_include_file,"use_pan_and_zoom = 1;");' */
  2479.             use_pan_and_zoom = TRUE;
  2480.             done = TRUE;
  2481.             break;
  2482.         case ZOOM:
  2483.         /*
  2484.          @ zoom button_color
  2485.          @ introduce a controlpanel at the lower right corner
  2486.          @ giving six 15x15pixel 'active' rectangle areas<br />(for x,leftarrow,rightarrow,uparrow,downarrow and a '-' and a '+' sign ) for zooming and/or panning of the image
  2487.          @ the 'x' symbol will do a 'location.reload' of the page, and thus reset all canvas drawings.
  2488.          @ choose an appropriate colour, so the small 'x,arrows,-,+' are clearly visible
  2489.          @ command 'opacity' may be used to set stroke_opacity of 'buttons
  2490.          @ NOTE: use command 'zoom' at the end of your script code (the same is true for commanmd 'mouse')
  2491.          @ NOTE: only objects that may be set draggable / clickable will be zoomed / panned
  2492.          @ 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 !!
  2493.         */
  2494.             fprintf(js_include_file,"use_pan_and_zoom = 1;");
  2495.             use_pan_and_zoom = TRUE;
  2496.             stroke_color = get_color(infile,1);
  2497.             /* we use BG_CANVAS (0) */
  2498.             add_zoom_buttons(js_include_file,canvas_root_id,stroke_color,stroke_opacity);
  2499.             done = TRUE;
  2500.             break;
  2501.         case ONCLICK:
  2502.         /*
  2503.          @ onclick
  2504.          @ keyword, no arguments
  2505.          @ if the next object is clicked, it's 'object sequence number' in fly script is returned <br /> by javascript:read_canvas();
  2506.          @ Line based object will show an increase in linewidth<br />Font based objects will show the text in 'bold' when clicked.
  2507.          @ NOTE: not all objects may be set clickable
  2508.         */
  2509.             fprintf(js_include_file,"use_dragdrop_reply = true;");
  2510.             onclick = 1;
  2511.             break;
  2512.         case DRAG:
  2513.         /*
  2514.          @ drag [x][y][xy]
  2515.          @ the next object will be draggable in x / y / xy direction
  2516.          @ the displacement can be read by 'javascript:read_dragdrop();'
  2517.          @ the precision (default 2 decimals) in the student reply may be set with command 'precision'.<br />Use this 'precision' command before this command 'drag x|y|xy' !
  2518.          @ the answer is  : object_number : Xorg : Yorg : Xnew : Ynew<br />wherein object_number is the place of the draggable object in your script.<br />Only draggable object will have an object_number (e.g things like point,crosshair,line,segment,circle,rect,triangle...etc)
  2519.          @ use keywordd 'snaptogrid' , 'xsnaptogrid' or 'ysnaptogrid' to switch from free to discrete movement
  2520.          @ 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.
  2521.          @ 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 !!
  2522.         */
  2523.             temp = get_string(infile,1);
  2524.             if(strstr(temp,"xy") != NULL ){
  2525.                 drag_type = 0;
  2526.             }
  2527.             else
  2528.             {
  2529.                 if(strstr(temp,"x") != NULL ){
  2530.                     drag_type = 1;
  2531.                 }
  2532.                 else
  2533.                 {
  2534.                     drag_type = 2;
  2535.                 }
  2536.             }
  2537.             fprintf(js_include_file,"dragdrop_precision = %d;use_dragdrop_reply = true;",precision);
  2538.             onclick = 2;
  2539.        
  2540.             /* if(use_userdraw == TRUE ){canvas_error("\"drag & drop\" may not be combined with \"userdraw\" or \"pan and zoom\" \n");} */
  2541.             break;
  2542.         case BLINK:
  2543.         /*
  2544.          @ blink time(seconds)
  2545.          @ NOT IMPLEMETED -YET
  2546.         */
  2547.             break;
  2548.         case XUNIT:
  2549.         /*
  2550.          @ xunit some_unit_for_x-values
  2551.          @ unicode allowed (no html code)
  2552.          @ use together with command mousex
  2553.          @ will display the cursor x-coordinate 'unit'
  2554.         */
  2555.             fprintf(js_include_file,"unit_x = \"%s\";",get_string(infile,1));
  2556.             break;
  2557.         case YUNIT:
  2558.         /*
  2559.          @ yunit some_unit_for_y-values
  2560.          @ unicode allowed (no html code)
  2561.          @ use together with command mousex
  2562.          @ will display the cursor y-coordinate 'unit'
  2563.         */
  2564.             fprintf(js_include_file,"unit_y = \"%s\";",get_string(infile,1));
  2565.             break;
  2566.         case MOUSE_DISPLAY:
  2567.         /*
  2568.          @display x|y|xy|degree|radius,color,fontsize
  2569.          @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 ( rhe angle between x-axis;(0:0);(x:y)
  2570.          @use commands 'xunit' and / or 'yunit' to add the units to the mouse values
  2571.          @just like commands 'mouse','mousex','mousey','mouse_degree'...only other name)
  2572.         */
  2573.         temp = get_string_argument(infile,0);
  2574.         if( strstr(temp,"xy") != NULL ){
  2575.             int_data[0] = 2;
  2576.         }else{
  2577.             if( strstr(temp,"y") != NULL ){
  2578.                 int_data[0] = 1;
  2579.             }else{
  2580.                 if( strstr(temp,"x") != NULL ){
  2581.                     int_data[0] = 0;
  2582.                 }else{
  2583.                     if(strstr(temp,"degree") != NULL){
  2584.                         int_data[0] = 3;
  2585.                     }else{
  2586.                         if(strstr(temp,"radius") != NULL){
  2587.                             int_data[0] = 4;
  2588.                         }else{
  2589.                             int_data[0] = 2;
  2590.                         }
  2591.                     }
  2592.                 }
  2593.             }
  2594.         }
  2595.         stroke_color = get_color(infile,0);
  2596.         font_size = (int) (get_real(infile,1));
  2597.         tmp_buffer = my_newmem(26);
  2598.         snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2599.         add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,int_data[0]);
  2600.         break;
  2601.         case MOUSE_DEGREE:
  2602.         /*
  2603.          @ mouse_degree color,fontsize
  2604.          @ will display the angle in degrees between x-axis, (0:0) and the cursor (x:y) in 'color' and 'font size'<br /> using default fontfamily Ariel
  2605.          @ The angle is positive in QI and QIII and the angle value is negative in QII and QIV
  2606.          @ NOTE: use command 'mouse' at the end of your script code (the same is true for command 'zoom')
  2607.  
  2608.         */
  2609.             stroke_color = get_color(infile,0);
  2610.             font_size = (int) (get_real(infile,1));
  2611.             tmp_buffer = my_newmem(26);
  2612.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2613.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,3);
  2614.             break;
  2615.         case MOUSEX:
  2616.         /*
  2617.          @ mousex color,fontsize
  2618.          @ will display the cursor x-coordinate in 'color' and 'font size'<br /> using default fontfamily Ariel
  2619.          @ NOTE: use command 'mouse' at the end of your script code (the same is true for command 'zoom')
  2620.  
  2621.         */
  2622.             stroke_color = get_color(infile,0);
  2623.             font_size = (int) (get_real(infile,1));
  2624.             tmp_buffer = my_newmem(26);
  2625.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2626.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,0);
  2627.             break;
  2628.         case MOUSEY:
  2629.         /*
  2630.          @ mousey color,fontsize
  2631.          @ will display the cursor y-coordinate in 'color' and 'font size'<br /> using default fontfamily Ariel
  2632.          @ NOTE: use command 'mouse' at the end of your script code (the same is true for command 'zoom')
  2633.  
  2634.         */
  2635.             stroke_color = get_color(infile,0);
  2636.             font_size = (int) (get_real(infile,1));
  2637.             tmp_buffer = my_newmem(26);
  2638.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2639.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,1);
  2640.             break;
  2641.         case MOUSE:
  2642.         /*
  2643.          @ mouse color,fontsize
  2644.          @ will display the cursor (x:y) coordinates  in 'color' and 'font size'<br /> using default fontfamily Ariel
  2645.          @ NOTE: use command 'mouse' at the end of your script code (the same is true for commanmd 'zoom')
  2646.  
  2647.         */
  2648.             stroke_color = get_color(infile,0);
  2649.             font_size = (int) (get_real(infile,1));
  2650.             tmp_buffer = my_newmem(26);
  2651.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2652.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,2);
  2653.             break;
  2654.         case INTOOLTIP:
  2655.             /*
  2656.             @ intooltip link_text
  2657.             @ link_text is a single line (span-element)
  2658.             @ link_text may also be an image URL http://some_server/images/my_image.png
  2659.             @ link_text may contain HTML markup
  2660.             @ the canvas will be displayed in a tooltip on 'link_text'
  2661.             @ the canvas is default transparent: use command 'bgcolor color' to adjust background-color<br />the link test will alos be shown with this bgcolor.
  2662.             */
  2663.             if(use_input_xy != FALSE ){canvas_error("intooltip can not be combined with userinput_xy command");}
  2664.             use_tooltip = TRUE;
  2665.             tooltip_text = get_string(infile,1);
  2666.             if(strstr(tooltip_text,"\"") != 0 ){ tooltip_text = str_replace(tooltip_text,"\"","'"); }
  2667.             break;
  2668.         case AUDIO:
  2669.         /*
  2670.         @ audio x,y,w,h,loop,visible,audiofile location
  2671.         @ x,y : left top corner of audio element (in xrange / yrange)
  2672.         @ w,y : width and height in pixels
  2673.         @ loop : 0 or 1 ( 1 = loop audio fragment)
  2674.         @ visible : 0 or 1 (1 = show controls)
  2675.         @ audio format may be in *.mp3 or *.ogg
  2676.         @ If you are using *.mp3 : be aware that FireFox will not (never) play this ! (Pattented format)
  2677.         @ if you are using *.ogg : be aware that Microsoft based systems not support it natively
  2678.         @ To avoid problems supply both types (mp3 and ogg) of audiofiles.<br />the program will use both as source tag
  2679.         @ example: upload both audio1.ogg and audio1.mp3 to http://server/files/<br />audio 0,0,http://server/files/audio1.mp3<br />svdraw will copy html-tag audio1.mp3 to audio1.ogg<br /> and the browser will play the compatible file (audio1.ogg or audio1.mp3)<br />
  2680.         */
  2681.             if( js_function[DRAW_AUDIO] != 1 ){ js_function[DRAW_AUDIO] = 1;}
  2682.             for(i=0;i<7;i++){
  2683.                 switch(i){
  2684.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x in x/y-range coord system -> pixel */
  2685.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y in x/y-range coord system  -> pixel */
  2686.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* pixel width */
  2687.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* height pixel height */
  2688.                     case 4: int_data[4] = (int) (get_real(infile,0)); if(int_data[4] != TRUE){int_data[4] = FALSE;} break; /* loop boolean */
  2689.                     case 5: int_data[5] = (int) (get_real(infile,0)); if(int_data[5] != TRUE){int_data[5] = FALSE;} break; /* visible boolean */
  2690.                     case 6:
  2691.                     temp = get_string(infile,1);
  2692.                     if( strstr(temp,".mp3") != 0 ){ temp = str_replace(temp,".mp3","");}
  2693.                     if( strstr(temp,".ogg") != 0 ){ temp = str_replace(temp,".ogg","");}
  2694.                     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);
  2695.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2696.                     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);
  2697.                     add_to_buffer(tmp_buffer);
  2698.                     break;
  2699.                     default:break;
  2700.                 }
  2701.             }
  2702.             reset();
  2703.             break;
  2704.         case VIDEO:
  2705.         /*
  2706.         @ video x,y,w,h,videofile location
  2707.         @ x,y : left top corner of audio element (in xrange / yrange)
  2708.         @ w,y : width and height in pixels
  2709.         @ example:<br />wims getfile : video 0,0,120,120,myvideo.mp4
  2710.         @ video format may be in *.mp4 (todo:other formats)
  2711.         */
  2712.             if( js_function[DRAW_VIDEO] != 1 ){ js_function[DRAW_VIDEO] = 1;}
  2713.             for(i=0;i<5;i++){
  2714.                 switch(i){
  2715.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x in x/y-range coord system -> pixel */
  2716.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y in x/y-range coord system  -> pixel */
  2717.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* pixel width */
  2718.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* height pixel height */
  2719.                     case 4: temp = get_string(infile,1);
  2720.                             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);
  2721.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2722.                             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);
  2723.                             add_to_buffer(tmp_buffer);
  2724.                             break;
  2725.                     default:break;
  2726.                 }
  2727.             }
  2728.             reset();
  2729.             break;
  2730.         case HATCHFILL:
  2731.         /*
  2732.         @ hatchfill x0,y0,dx,dy,color
  2733.         @ x0,y0 in xrange / yrange
  2734.         @ distances dx,dy in pixels
  2735.         */
  2736.             if( js_function[DRAW_HATCHFILL] != 1 ){ js_function[DRAW_HATCHFILL] = 1;}
  2737.             for(i=0;i<5;i++){
  2738.                 switch(i){
  2739.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2740.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2741.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2742.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2743.                     case 4: stroke_color = get_color(infile,1);
  2744.                     /* draw_hatchfill(ctx,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize) */
  2745.                     string_length = snprintf(NULL,0,  "draw_hatchfill(%d,%d,%d,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS,int_data[0],int_data[1],int_data[2],int_data[3],line_width,stroke_color,stroke_opacity,xsize,ysize);
  2746.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2747.                     snprintf(tmp_buffer,string_length,"draw_hatchfill(%d,%d,%d,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS,int_data[0],int_data[1],int_data[2],int_data[3],line_width,stroke_color,stroke_opacity,xsize,ysize);
  2748.                     add_to_buffer(tmp_buffer);
  2749.                     break;
  2750.                     default:break;
  2751.                 }
  2752.             }
  2753.             reset();
  2754.         break;
  2755.         case DIAMONDFILL:
  2756.         /*
  2757.         @ diamondfill x0,y0,dx,dy,color
  2758.         @ x0,y0 in xrange / yrange
  2759.         @ distances dx,dy in pixels
  2760.         */
  2761.             if( js_function[DRAW_DIAMONDFILL] != 1 ){ js_function[DRAW_DIAMONDFILL] = 1;}
  2762.             for(i=0;i<5;i++){
  2763.                 switch(i){
  2764.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2765.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2766.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2767.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2768.                     case 4: stroke_color = get_color(infile,1);
  2769.                     /* draw_hatchfill(ctx,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize) */
  2770.                     string_length = snprintf(NULL,0,  "draw_diamondfill(%d,%d,%d,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS,int_data[0],int_data[1],int_data[2],int_data[3],line_width,stroke_color,stroke_opacity,xsize,ysize);
  2771.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2772.                     snprintf(tmp_buffer,string_length,"draw_diamondfill(%d,%d,%d,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS,int_data[0],int_data[1],int_data[2],int_data[3],line_width,stroke_color,stroke_opacity,xsize,ysize);
  2773.                     add_to_buffer(tmp_buffer);
  2774.                     break;
  2775.                     default:break;
  2776.                 }
  2777.             }
  2778.             reset();
  2779.         break;
  2780.         case GRIDFILL:
  2781.         /*
  2782.         @ gridfill x0,y0,dx,dy,color
  2783.         @ x0,y0 in xrange / yrange
  2784.         @ distances dx,dy in pixels
  2785.         @ a draggable object may snap_to_grid (using keywords xysnaptogrid,xsnaprogrid, ysnaptogrid)
  2786.         @ userdraw object may snap_to_grid
  2787.         */
  2788.             if( js_function[DRAW_GRIDFILL] != 1 ){ js_function[DRAW_GRIDFILL] = 1;}
  2789.             for(i=0;i<5;i++){
  2790.                 switch(i){
  2791.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2792.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2793.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2794.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2795.                     case 4: stroke_color = get_color(infile,1);
  2796.                     string_length = snprintf(NULL,0,  "draw_gridfill(%d,%d,%d,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS,int_data[0],int_data[1],int_data[2],int_data[3],line_width,stroke_color,stroke_opacity,xsize,ysize);
  2797.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2798.                     snprintf(tmp_buffer,string_length,"draw_gridfill(%d,%d,%d,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS,int_data[0],int_data[1],int_data[2],int_data[3],line_width,stroke_color,stroke_opacity,xsize,ysize);
  2799.                     add_to_buffer(tmp_buffer);
  2800.                     break;
  2801.                     default:break;
  2802.                 }
  2803.             }
  2804.             reset();
  2805.         break;
  2806.         case DOTFILL:
  2807.         /*
  2808.         @ dotfill x0,y0,dx,dy,color
  2809.         @ x0,y0 in xrange / yrange
  2810.         @ distances dx,dy in pixels
  2811.         @ radius of dots is linewidth
  2812.         */
  2813.             if( js_function[DRAW_DOTFILL] != 1 ){ js_function[DRAW_DOTFILL] = 1;}
  2814.             for(i=0;i<5;i++){
  2815.                 switch(i){
  2816.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2817.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2818.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2819.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2820.                     case 4: stroke_color = get_color(infile,1);
  2821.                     /* draw_dotfill(ctx,x0,y0,dx,dy,radius,color,opacity,xsize,ysize) */
  2822.                     string_length = snprintf(NULL,0,  "draw_dotfill(%d,%d,%d,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS,int_data[0],int_data[1],int_data[2],int_data[3],line_width,stroke_color,stroke_opacity,xsize,ysize);
  2823.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2824.                     snprintf(tmp_buffer,string_length,"draw_dotfill(%d,%d,%d,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS,int_data[0],int_data[1],int_data[2],int_data[3],line_width,stroke_color,stroke_opacity,xsize,ysize);
  2825.                     add_to_buffer(tmp_buffer);
  2826.                     break;
  2827.                     default:break;
  2828.                 }
  2829.             }
  2830.             reset();
  2831.         break;
  2832.         case IMAGEFILL:
  2833.         /*
  2834.         @ imagefill dx,dy,image_url
  2835.         @ The next suitable <b>filled object</b> will be filled with "image_url" tiled
  2836.         @ After pattern filling ,the fill-color should be reset !
  2837.         @ wims getins / image from class directory : imagefill 80,80,my_image.gif
  2838.         @ normal url : imagefill 80,80,$module_dir/gifs/my_image.gif
  2839.         @ normal url : imagefill 80,80,http://adres/a/b/c/my_image.jpg
  2840.         @ if dx,dy is larger than the image, the whole image will be background to the next object.
  2841.         */
  2842.             if( js_function[DRAW_IMAGEFILL] != 1 ){ js_function[DRAW_IMAGEFILL] = 1;}
  2843.             for(i=0 ;i < 3 ; i++){
  2844.                 switch(i){
  2845.                     case 0:int_data[0] = (int) (get_real(infile,0));break;
  2846.                     case 1:int_data[1] = (int) (get_real(infile,0));break;
  2847.                     case 2: URL = get_string_argument(infile,1);
  2848.                             string_length = snprintf(NULL,0,  "draw_imagefill(%d,%d,%d,\"%s\",%d,%d);\n",STATIC_CANVAS,int_data[0],int_data[1],URL,xsize,ysize);
  2849.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2850.                             snprintf(tmp_buffer,string_length,"draw_imagefill(%d,%d,%d,\"%s\",%d,%d);\n",STATIC_CANVAS,int_data[0],int_data[1],URL,xsize,ysize);
  2851.                             add_to_buffer(tmp_buffer);
  2852.                     break;
  2853.                 }
  2854.             }
  2855.             reset();
  2856.         break;
  2857.         case FILLTOBORDER:
  2858.         /*
  2859.         @ filltoborder x,y,bordercolor,color
  2860.         @ fill the region  of point (x:y) bounded by 'bordercolor' with color 'color'
  2861.         @ any other color will not act as border to the bucket fill
  2862.         @ use this command  after all boundary objects are declared.
  2863.         @ 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..
  2864.         */
  2865.             for(i=0 ;i < 4 ; i++){
  2866.                 switch(i){
  2867.                     case 0:double_data[0] = get_real(infile,0);break;
  2868.                     case 1:double_data[1] = get_real(infile,0);break;
  2869.                     case 2:bgcolor = get_color(infile,0);break;
  2870.                     case 3:fill_color = get_color(infile,1);
  2871.                            if(js_function[DRAW_FILLTOBORDER] != 1 ){/* use only once */
  2872.                                 js_function[DRAW_FILLTOBORDER] = 1;
  2873.                                 add_js_filltoborder(js_include_file,canvas_root_id);
  2874.                            }
  2875.                            decimals = find_number_of_digits(precision);
  2876.                            /* we need to set a timeout: the canvas is not yet draw in memory? when floodfill is called directly... */
  2877.                            string_length = snprintf(NULL,0,  "setTimeout(function(){filltoborder(%.*f,%.*f,[%s,%d],[%s,%d]);},1000);\n",decimals,double_data[0],decimals,double_data[1],bgcolor,(int) (fill_opacity/0.0039215),fill_color,(int) (fill_opacity/0.0039215));
  2878.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2879.                            snprintf(tmp_buffer,string_length,"setTimeout(function(){filltoborder(%.*f,%.*f,[%s,%d],[%s,%d]);},1000);\n",decimals,double_data[0],decimals,double_data[1],bgcolor,(int) (fill_opacity/0.0039215),fill_color,(int) (fill_opacity/0.0039215));
  2880.                            add_to_buffer(tmp_buffer);
  2881.                            break;
  2882.                     default:break;
  2883.                 }
  2884.             }
  2885.             reset();
  2886.         break;
  2887.         case FLOODFILL:
  2888.         /*
  2889.         @ floodfill x,y,color
  2890.         @ alternative syntax: fill x,y,color
  2891.         @ fill the region of point (x:y) with color 'color'
  2892.         @ any other color or size of picture (borders of picture) will act as border to the bucket fill
  2893.         @ use this command  after all boundary objects are declared.
  2894.         @ Use command 'clickfill,color' for user click driven flood fill.
  2895.         @ NOTE: recognised colour boundaries are in the "drag canvas" e.g. only for objects that can be set draggable / clickable
  2896.         @ 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..
  2897.         */
  2898.             for(i=0 ;i < 4 ; i++){
  2899.                 switch(i){
  2900.                     case 0:double_data[0] = get_real(infile,0);break;
  2901.                     case 1:double_data[1] = get_real(infile,0);break;
  2902.                     case 2:fill_color = get_color(infile,1);
  2903.                            if(js_function[DRAW_FLOODFILL] != 1 ){/* use only once */
  2904.                                 js_function[DRAW_FLOODFILL] = 1;
  2905.                                 add_js_floodfill(js_include_file,canvas_root_id);
  2906.                            }
  2907.                            decimals = find_number_of_digits(precision);/*floodfill(interaction,x,y,[R,G,B,A]) */
  2908.                            /* we need to set a timeout: the canvas is not yet draw in memory? when floodfill is called directly... */
  2909.                            string_length = snprintf(NULL,0,  "setTimeout(function(){floodfill(0,%.*f,%.*f,[%s,%d]);},1000);\n",decimals,double_data[0],decimals,double_data[1],fill_color,(int) (fill_opacity/0.0039215));
  2910.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2911.                            snprintf(tmp_buffer,string_length,"setTimeout(function(){floodfill(0,%.*f,%.*f,[%s,%d]);},1000);\n",decimals,double_data[0],decimals,double_data[1],fill_color,(int) (fill_opacity/0.0039215));
  2912.                            add_to_buffer(tmp_buffer);
  2913.                            break;
  2914.                     default:break;
  2915.                 }
  2916.             }
  2917.             reset();
  2918.         break;
  2919.         case CLICKFILLMARGE:
  2920.             clickfillmarge = (int) (get_real(infile,1));
  2921.             break;
  2922.         /*
  2923.         @ clickfillmarge int
  2924.         @ default 20 (pixels)
  2925.         @ when using command "clickfill fillcolor" a coloured area my be reverted ("undo") <br />back to background colour with a middle mouse click<br />when the click is in a 40x40 rectangle around a stored m mouseclick (userdraw_x[] and userdraw_y[])
  2926.         */
  2927.         case CLICKFILL:
  2928.         /*
  2929.         @ clickfill fillcolor
  2930.         @ user left mouse click will floodfill the area with fillcolor
  2931.         @ multiple areas may be coloured
  2932.         @ the coloured areas can be removed (changed to "bgcolor") by  middle / right mouse click <br />(if the click is in an 40x40 pixel area of the click coordinate that "painted" the area)
  2933.         @ the answer will be read as the (x:y) click coordinates per coloured area
  2934.         @ background color of main div may be set by using command "bgcolor color"
  2935.         @ may not be combined with command "userdraw"
  2936.         @ NOTE: recognised colour boundaries are in the "drag canvas" e.g. only for objects that can be set draggable / clickable
  2937.         */
  2938.          fill_color = get_color(infile,1);
  2939.          if(js_function[DRAW_FLOODFILL] != 1 ){/* use only once */
  2940.             js_function[DRAW_FLOODFILL] = 1;
  2941.             add_js_floodfill(js_include_file,canvas_root_id);
  2942.          }
  2943.          fprintf(js_include_file,"\n<!-- begin command clickfill -->\nvar marge_xy = %d;userdraw_x = new Array();userdraw_y = new Array();var user_clickfill_cnt = 0;\ncanvas_div.addEventListener(\"mousedown\",clickfill,false);function clickfill(evt){var x = evt.clientX - findPosX(canvas_div) + document.body.scrollLeft + document.documentElement.scrollLeft;var y = evt.clientY - findPosY(canvas_div) + document.body.scrollTop + document.documentElement.scrollTop;if(evt.which != 1){for(var p=0; p < user_clickfill_cnt;p++){if(userdraw_x[p] + marge_xy > x && userdraw_x[p] - marge_xy < x){if(userdraw_y[p] + marge_xy > y && userdraw_y[p] - marge_xy < y){if(confirm(\"Clear ?\")){floodfill(1,userdraw_x[p],userdraw_y[p],canvas_div.style.backgroundColor || [255,255,255,0]);userdraw_x.splice(p,2);userdraw_y.splice(p,2);user_clickfill_cnt--;return;};};};};};userdraw_x[user_clickfill_cnt] = x;userdraw_y[user_clickfill_cnt] = y;user_clickfill_cnt++;floodfill(1,x,y,[%s,%d]);};",clickfillmarge,fill_color,(int) (fill_opacity/0.0039215));
  2944.          add_read_canvas(canvas_root_id,1,reply_precision);
  2945.          reset();
  2946.         break;
  2947.         case SETPIXEL:
  2948.         /*
  2949.         @ setpixel x,y,color
  2950.         @ A "point" with diameter 1 pixel centeres at (x:y) in xrange / yrange
  2951.         @ pixels can not be dragged or clicked
  2952.         @ "pixelsize = 1" may be changed by command "pixelsize int"
  2953.         */
  2954.             if( js_function[DRAW_PIXELS] != 1 ){ js_function[DRAW_PIXELS] = 1;}
  2955.             for(i=0;i<3;i++){
  2956.                 switch(i){
  2957.                     case 0: double_data[0] = get_real(infile,0); break; /* x */
  2958.                     case 1: double_data[1] = get_real(infile,0); break; /* y  */
  2959.                     case 2: stroke_color = get_color(infile,1);
  2960.                            string_length = snprintf(NULL,0,"draw_setpixel([%f],[%f],\"%s\",%.2f,%d);\n",double_data[0],double_data[1],stroke_color,stroke_opacity,pixelsize);
  2961.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2962.                            snprintf(tmp_buffer,string_length,"draw_setpixel([%f],[%f],\"%s\",%.2f,%d);\n",double_data[0],double_data[1],stroke_color,stroke_opacity,pixelsize);
  2963.                            add_to_buffer(tmp_buffer);
  2964.                            break;
  2965.                     default:break;
  2966.                 }
  2967.             }
  2968.             reset();
  2969.         break;
  2970.         case PIXELSIZE:
  2971.         /*
  2972.         @ pixelsize int
  2973.         @ in case you want to deviate from default pixelsize = 1...
  2974.         */
  2975.             pixelsize = (int) get_real(infile,1);
  2976.         break;
  2977.         case PIXELS:
  2978.         /*
  2979.         @ pixels color,x1,y1,x2,y2,x3,y3...
  2980.         @ Draw  "points" with diameter 1 pixel
  2981.         @ pixels can not be dragged or clicked
  2982.         @ "pixelsize = 1" may be changed by command "pixelsize int"
  2983.         */
  2984.             if( js_function[DRAW_PIXELS] != 1 ){ js_function[DRAW_PIXELS] = 1;}
  2985.             stroke_color=get_color(infile,0);
  2986.             i=0;
  2987.             c=0;
  2988.             while( ! done ){     /* get next item until EOL*/
  2989.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  2990.                 for( c = 0 ; c < 2; c++){
  2991.                     if(c == 0 ){
  2992.                         double_data[i] = get_real(infile,0);
  2993.                         i++;
  2994.                     }
  2995.                     else
  2996.                     {
  2997.                         double_data[i] = get_real(infile,1);
  2998.                         i++;
  2999.                     }
  3000.                 }
  3001.             }
  3002.             decimals = find_number_of_digits(precision);
  3003.             /*  *double_xy2js_array(double xy[],int len,int decimals) */
  3004.             string_length = snprintf(NULL,0,  "draw_setpixel(%s,\"%s\",%.2f,%d);\n",double_xy2js_array(double_data,i,decimals),stroke_color,stroke_opacity,pixelsize);
  3005.             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3006.             snprintf(tmp_buffer,string_length,"draw_setpixel(%s,\"%s\",%.2f,%d);\n",double_xy2js_array(double_data,i,decimals),stroke_color,stroke_opacity,pixelsize);
  3007.             add_to_buffer(tmp_buffer);
  3008.             reset();
  3009.             break;
  3010.         case REPLYFORMAT:
  3011.         /*
  3012.         @ replyformat number
  3013.         @ use number=-1 to deactivate the js-functions read_canvas() and read_dragdrop()
  3014.         @ default values should be fine !
  3015.         @ use command 'precision [0,1,10,100,1000,10000...]' before command 'replyformat' to set the desired number of decimals in the student reply / drawing
  3016.         @ the last value for 'precision int' will be used to calculate  the reply coordinates, if needed (read_canvas();)
  3017.         @ 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,x2:y2:text2...x_n:y_n:text_n</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>21 = (x1:y1) (x2:y2) ... (x_n:y_n)<br />verbatim coordinate return</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>replyformat 23 : can only be used for drawtype 'polyline'<br />a typical click sequence in drawtype polyline isx1,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>replyformat 24 = read all inputfield values: even those set 'readonly'</li><li>format 25 = angle1,angle2...angle_n : will return the radius (one or many) of the user drawn circle segment in degrees </li><li>format 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 array: x1:y1:text1,x2:y2:text2...</li></ul>
  3018.         @ note to 'userdraw text,color' : the x / y-values are in pixels ! (this to avoid too lengthy calculations in javascript...)
  3019.         */
  3020.          reply_format = (int) get_real(infile,1);
  3021.          reply_precision = precision;
  3022.         break;
  3023.         case LEGENDCOLORS:
  3024.         /*
  3025.         @ legendcolors color1:color2:color3:...:color_n
  3026.         @ 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<br />
  3027.         @ make sure the number of colours match the number of legend items
  3028.         @ command 'legend' in case of 'piechart' and 'barchart' will use these colours per default (no need to specify 'legendcolors'
  3029.         */
  3030.             if(legend_cnt == -1){canvas_error("use command \"legend\" before command \"legendcolors\" ! ");}
  3031.             temp = get_string(infile,1);
  3032.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  3033.             fprintf(js_include_file,"var legendcolors%d = [\"%s\"];",legend_cnt,temp);
  3034.             break;
  3035.         case LEGEND:
  3036.         /*
  3037.         @ legend string1:string2:string3....string_n
  3038.         @ will be used to create a legend for a graph
  3039.         @ also see command 'piechart'
  3040.         @ will use the same colors per default as used in the graphs : use command 'legendcolors' to override the default
  3041.         */
  3042.             temp = get_string(infile,1);
  3043.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  3044.             legend_cnt++; /* attention :starts with -1 : it will be used in piechart etc */
  3045.             fprintf(js_include_file,"var legend%d = [\"%s\"];",legend_cnt,temp);
  3046.             break;
  3047.         case XLABEL:
  3048.         /*
  3049.         @ xlabel some_string
  3050.         @ will be used to create a label for the x-axis (label is in quadrant I)
  3051.         @ can only be used together with command 'grid'<br />not depending on keywords 'axis' and 'axisnumbering'
  3052.         @ font setting: italic Courier, fontsize will be slightly larger (fontsize + 4)
  3053.         */
  3054.             temp = get_string(infile,1);
  3055.             fprintf(js_include_file,"var xaxislabel = \"%s\";",temp);
  3056.             break;
  3057.         case YLABEL:
  3058.         /*
  3059.         @ ylabel some_string
  3060.         @ will be used to create a (vertical) label for the y-axis (label is in quadrant I)
  3061.         @ can only be used together with command 'grid'<br />not depending on keywords 'axis' and 'axisnumbering'
  3062.         @ font setting: italic Courier, fontsize will be slightly larger (fontsize + 4)
  3063.         */
  3064.             temp = get_string(infile,1);
  3065.             fprintf(js_include_file,"var yaxislabel = \"%s\";",temp);
  3066.             break;
  3067.         case LINEGRAPH: /* scheme: var linegraph_0 = [ 'stroke_color','line_width','use_dashed' ,'dashtype0','dashtype1','x1','y1',...,'x_n','y_n'];*/
  3068.         /*
  3069.         @ linegraph x1:y1;x2:y2...x_n:y_n
  3070.         @ will plot your data in a graph
  3071.         @ may only to be used together with command 'grid'
  3072.         @ can be used together with freestyle x-axis/y-axis texts : see commands 'xaxis' and 'yaxis'
  3073.         @ use command 'legend' to provide an optional legend in right-top-corner
  3074.         @ also see command 'piechart'
  3075.         @ multiple linegraphs may be used in a single plot
  3076.         @ NOTE: your arguments are not checked by canvasdraw : use your javascript console in case of trouble...
  3077.         @ <ul><li>use command 'strokecolor' before command 'linegraph' to set the color of this graph</li><li>use command 'linewidth' before command 'linegraph' to set linewidth of this graph</li><li>use command 'dashed' before command 'linegraph' to set dashing of the graph</li><li>if dashing is set, use command 'dashtype' before command 'linegraph' to set the type of dashing of the graph</li></ul>
  3078.         */
  3079.             temp = get_string(infile,1);
  3080.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  3081.             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);
  3082.             linegraph_cnt++;
  3083.             reset();
  3084.             break;
  3085.         case BARCHART:
  3086.         /*
  3087.         @ barchart x_1:y_1:color_1:x_2:y_2:color_2:...x_n:y_n:color_n
  3088.         @ will be used to create a legend for bar graph
  3089.         @ may only to be used together with command 'grid'
  3090.         @ can be used together with freestyle x-axis/y-axis texts : see commands 'xaxis' and 'yaxis'
  3091.         @ use command 'legend' to provide an optional legend in right-top-corner
  3092.         @ also see command 'piechart'
  3093.         @ NOTE: your arguments are not checked by canvasdraw : use your javascript console in case of trouble...
  3094.         */
  3095.             temp = get_string(infile,1);
  3096.             if( strstr( temp,":" ) != 0 ){ temp = str_replace(temp,":","\",\""); }
  3097.             fprintf(js_include_file,"var barchart_%d = [\"%s\"];",barchart_cnt,temp);
  3098.             barchart_cnt++;
  3099.             reset();
  3100.             break;
  3101.         case CLOCK:
  3102.         /*
  3103.         @ clock x,y,r(px),H,M,S,type hourglass,interactive [ ,H_color,M_color,S_color,background_color,foreground_color ]
  3104.         @ use command 'opacity stroke-opacity,fill-opacity' to adjust foreground (stroke) and background (fill) transparency
  3105.         @ type hourglass:<br />type = 0 : only segments<br />type = 1 : only numbers<br />type = 2 : numbers and segments
  3106.         @ colors are optional: if not defined, default values will be used<br />default colours: clock 0,0,60,4,35,45,1,2,[space]<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,white,white,black,yellow
  3107.         @ if you don't want a seconds hand (or minutes...), just make it invisible by using the background color of the hourglass...
  3108.         @ 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></ul>
  3109.         @ canvasdraw will not check validity of colornames...the javascript console is your best friend
  3110.         @ no combinations with other reply_types allowed, for now
  3111.         @ if interactive, 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
  3112.         @ NOTE: if you need multiple clocks on a webpage, use multiple 'clock' commands in a single script !<br />and <i>not multiple canvas scripts</i> in a single page
  3113.         */
  3114.             if( js_function[DRAW_CLOCK] != 1 ){ js_function[DRAW_CLOCK] = 1;}
  3115.  
  3116.         /*    var clock = function(xc,yc,radius,H,M,S,h_color,m_color,s_color,bg_color,fg_color) */
  3117.             for(i=0;i<9;i++){
  3118.              switch(i){
  3119.               case 0: int_data[0] = x2px(get_real(infile,0)); break; /* xc */
  3120.               case 1: int_data[1] = y2px(get_real(infile,0)); break; /* yc */
  3121.               case 2: int_data[2] = get_real(infile,0);break;/* radius in px */
  3122.               case 3: int_data[3] = get_real(infile,0);break;/* hours */
  3123.               case 4: int_data[4] = get_real(infile,0);break;/* minutes */
  3124.               case 5: int_data[5] = get_real(infile,0);break;/* seconds */
  3125.               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 */
  3126.               case 7: int_data[7] = (int)(get_real(infile,0));/* interactive 0,1,2*/
  3127.                 switch(int_data[7]){
  3128.                     case 0:break;
  3129.                     case 1:if(clock_cnt == 0){
  3130.                                 if( reply_format == 0 ){
  3131.                                      reply_format = 18; /* user sets clock */
  3132.                                     /* 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");
  3133.                                      check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3134.                                      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");
  3135.                                      add_to_buffer(tmp_buffer);
  3136.                                     */
  3137.                                      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");
  3138.                                 }
  3139.                                 else
  3140.                                 {
  3141.                                     canvas_error("interactive clock may not be used together with other reply_types...");
  3142.                                 }
  3143.                              }
  3144.                             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);
  3145.                     break;
  3146.                     case 2:if( reply_format == 0 ){
  3147.                                 reply_format = 19; /* "onclick */
  3148.                                 fprintf(js_include_file,"\n<!-- begin onclick handler for clocks -->\nvar reply = new Array();\n\ncanvas_div.addEventListener( 'mousedown', user_click,false);\n\nfunction user_click(evt){if(evt.which == 1){var canvas_rect = clock_canvas.getBoundingClientRect();\nvar x = evt.clientX - canvas_rect.left;\nvar y = evt.clientY - canvas_rect.top;\nvar p = 0;\nvar name;\nvar t = true;\nwhile(t){try{name = eval('clocks'+p);\nif( x < name.xc + name.radius && x > name.xc - name.radius ){if( y < name.yc + name.radius && y > name.yc - name.radius ){reply[0] = p;\nname = 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);\n};\n}else{clock_ctx.clearRect(name.xc-name.radius,name.yc-name.radius,name.xc+name.radius,name.yc+name.radius);\nname = 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};\np++;\n}catch(e){t=false;\n};\n};\n};\n};\n\n<!-- end onclick handler for clocks -->\n ");
  3149.                             }
  3150.                             else
  3151.                             {
  3152.                                 if( reply_format != 19){
  3153.                                    canvas_error("clickable clock(s) may not be used together with other reply_types...");
  3154.                                  }
  3155.                             }
  3156.                      break;
  3157.                      default: canvas_error("interactive must be set 0,1 or 2");break;
  3158.                 }
  3159.                 break;
  3160.                 case 8:
  3161.                         if(clock_cnt == 0 ){ /* set opacity's just once .... it should be a argument to clock() , for now it's OK */
  3162.                             fprintf(js_include_file,"var clock_bg_opacity = %.2f;var clock_fg_opacity = %.2f;",fill_opacity,stroke_opacity);
  3163.                         }
  3164.                         temp = get_string(infile,1);
  3165.                         if( strstr( temp,",") != 0 ){ temp = str_replace(temp,",","\",\""); }
  3166.                         if( strlen(temp) < 1 ){temp = ",\"\",\"\",\"\",\"\",\"\"";}
  3167.                         string_length = snprintf(NULL,0,"var 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);
  3168.                         check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3169.                         snprintf(tmp_buffer,string_length,"var 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);
  3170.                         add_to_buffer(tmp_buffer);
  3171.                         clock_cnt++;
  3172.                         break;
  3173.                 default:break;
  3174.              }
  3175.             }
  3176.             break;
  3177.         case PIECHART:
  3178.         /*
  3179.         @ piechart xc,yc,radius,'data+colorlist'
  3180.         @ (xc : yc) center of circle diagram in xrange/yrange
  3181.         @ radius in pixels
  3182.         @ 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
  3183.         @ example data+colorlist : 132:red:23565:green:323:black:234324:orange:23434:yellow:2543:white
  3184.         @ the number of colors must match the number of data.
  3185.         @ use command "opacity 0-255,0-255" to adjust fill_opacity of colours
  3186.         @ use command "legend string1:string2:...:string_n" 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.
  3187.         */
  3188.             if( js_function[DRAW_PIECHART] != 1 ){ js_function[DRAW_PIECHART] = 1;}
  3189.             for(i=0;i<5;i++){
  3190.                 switch(i){
  3191.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  3192.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  3193.                     case 2: int_data[2] = (int)(get_real(infile,1));break;/* radius*/
  3194.                     case 3: temp = get_string(infile,1);
  3195.                             if( strstr( temp, ":" ) != 0 ){ temp = str_replace(temp,":","\",\"");}
  3196.                             string_length = snprintf(NULL,0,"draw_piechart(%d,%d,%d,%d,[\"%s\"],%.2f,%d,\"%s\");\n",PIECHART,int_data[0],int_data[1],int_data[2],temp,fill_opacity,legend_cnt,font_family);
  3197.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3198.                             snprintf(tmp_buffer,string_length,"draw_piechart(%d,%d,%d,%d,[\"%s\"],%.2f,%d,\"%s\");\n",PIECHART,int_data[0],int_data[1],int_data[2],temp,fill_opacity,legend_cnt,font_family);
  3199.                             add_to_buffer(tmp_buffer);
  3200.                            break;
  3201.                     default:break;
  3202.                 }
  3203.             }
  3204.             reset();
  3205.         break;
  3206.         case STATUS:
  3207.         /*
  3208.         @status
  3209.         @keyword
  3210.         @alernative keyword: nostatus
  3211.         @used to override the effects of "status=done" in wims (answer.phtml)
  3212.         @affects inputfields / textarea's in canvasimage and all userdraw based commands
  3213.         @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'
  3214.         */
  3215.  
  3216.             fprintf(js_include_file,"\nwims_status=\"waiting\";\n");
  3217.             break;
  3218.         case XLOGBASE:
  3219.         /*
  3220.         @ xlogbase number
  3221.         @ sets the logbase number for the x-axis
  3222.         @ default value 10
  3223.         @ use together with commands xlogscale / xylogscale
  3224.         */
  3225.             fprintf(js_include_file,"xlogbase=%d;",(int)(get_real(infile,1)));
  3226.             break;
  3227.         case YLOGBASE:
  3228.         /*
  3229.         @ ylogbase number
  3230.         @ sets the logbase number for the y-axis
  3231.         @ default value 10
  3232.         @ use together with commands ylogscale / xylogscale
  3233.         */
  3234.             fprintf(js_include_file,"ylogbase=%d;",(int)(get_real(infile,1)));
  3235.             break;
  3236.         case XLOGSCALE:
  3237.         /*
  3238.          @ xlogscale ymajor,yminor,majorcolor,minorcolor
  3239.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  3240.          @ ymajor is the major step on the y-axis; yminor is the divisor for the y-step
  3241.          @ the linewidth is set using command 'linewidth int'
  3242.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  3243.          @ default logbase number = 10 ... when needed , set the logbase number with command 'xlogbase number'
  3244.          @ 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>
  3245.          @ note: the complete canvas will be used for the 'log paper'
  3246.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  3247.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  3248.          @ note: when using something like 'xrange 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')
  3249.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  3250.          @ attention: keyword 'snaptogrid' may not lead to the desired result...
  3251.         */
  3252.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  3253.             if( js_function[DRAW_XLOGSCALE] != 1 ){ js_function[DRAW_XLOGSCALE] = 1;}
  3254.             for(i=0;i<4;i++){
  3255.                 switch(i){
  3256.                     case 0: double_data[0] = get_real(infile,0);break; /* xmajor */
  3257.                     case 1: int_data[0] = (int) (get_real(infile,0));break; /* xminor */
  3258.                     case 2: stroke_color = get_color(infile,0); break;
  3259.                     case 3: fill_color = get_color(infile,1);
  3260.                         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);
  3261.                         tmp_buffer = my_newmem(string_length+1);
  3262.                         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);
  3263.                         fprintf(js_include_file,"use_xlogscale=1;snap_y = %f;snap_x = xlogbase;",double_data[0]/int_data[0]);
  3264.                         add_to_buffer(tmp_buffer);
  3265.                         break;
  3266.                     default:break;
  3267.                 }
  3268.             }
  3269.             break;
  3270.         case YLOGSCALE:
  3271.         /*
  3272.          @ ylogscale xmajor,xminor,majorcolor,minorcolor
  3273.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  3274.          @ xmajor is the major step on the x-axis; xminor is the divisor for the x-step
  3275.          @ the linewidth is set using command 'linewidth int'
  3276.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  3277.          @ default logbase number = 10 ... when needed , set the logbase number with command 'ylogbase number'
  3278.          @ 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>
  3279.          @ note: the complete canvas will be used for the 'log paper'
  3280.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  3281.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  3282.          @ 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')
  3283.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  3284.          @ attention: keyword 'snaptogrid' may not lead to the desired result...
  3285.         */
  3286.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  3287.             if( js_function[DRAW_YLOGSCALE] != 1 ){ js_function[DRAW_YLOGSCALE] = 1;}
  3288.             for(i=0;i<4;i++){
  3289.                 switch(i){
  3290.                     case 0: double_data[0] = get_real(infile,0);break; /* xmajor */
  3291.                     case 1: int_data[0] = (int) (get_real(infile,0));break; /* xminor */
  3292.                     case 2: stroke_color = get_color(infile,0); break;
  3293.                     case 3: fill_color = get_color(infile,1);
  3294.                         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);
  3295.                         tmp_buffer = my_newmem(string_length+1);
  3296.                         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);
  3297.                         fprintf(js_include_file,"use_ylogscale=1;snap_x = %f;snap_y = ylogbase;",double_data[0]/int_data[0]);
  3298.                         add_to_buffer(tmp_buffer);
  3299.                         break;
  3300.                     default:break;
  3301.                 }
  3302.             }
  3303.             break;
  3304.         case XYLOGSCALE:
  3305.         /*
  3306.          @ xylogscale majorcolor,minorcolor
  3307.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  3308.          @ the linewidth is set using command 'linewidth int'
  3309.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  3310.          @ default logbase number = 10 ... when needed , set the logbase number with command 'xlogbase number' and/or 'ylogbase number'
  3311.          @ 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>
  3312.          @ note: the complete canvas will be used for the 'log paper'
  3313.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  3314.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  3315.          @ 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')
  3316.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  3317.          @ attention: keyword 'snaptogrid' may not lead to the desired result...
  3318.         */
  3319.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  3320.             if( js_function[DRAW_XYLOGSCALE] != 1 ){ js_function[DRAW_XYLOGSCALE] = 1;}
  3321.             for(i=0;i<2;i++){
  3322.                 switch(i){
  3323.                     case 0: stroke_color = get_color(infile,0); break;
  3324.                     case 1: fill_color = get_color(infile,1);
  3325.                         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);
  3326.                         tmp_buffer = my_newmem(string_length+1);
  3327.                         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);
  3328.                         fprintf(js_include_file,"use_xlogscale=1;use_ylogscale=1;snap_x = xlogbase;snap_y = ylogbase;");
  3329.                         add_to_buffer(tmp_buffer);
  3330.                         break;
  3331.                     default:break;
  3332.                 }
  3333.             }
  3334.         break;
  3335.         default:sync_input(infile);
  3336.         break;
  3337.     }
  3338.   }
  3339.   /* we are done parsing script file */
  3340.   /* check if xrange / yrange was set explicit ... or use xmin=0 xmax=xsize ymin=0 ymax=ysize : Quadrant I */
  3341.   if( found_size_command == 1 ){
  3342.     fprintf(js_include_file,"var xmin = 0;var xmax = %d;var ymin = 0;var ymax = %d",xsize,ysize);
  3343.   }
  3344.   else
  3345.   {
  3346.     if( found_size_command != 3 ){
  3347.      canvas_error("Please specify both xrange and yrange ...");
  3348.     }
  3349.   }
  3350.  
  3351.   /* if needed, add generic draw functions (grid / xml etc) to buffer : these are no draggable/clickable shapes / objects  ! */
  3352.   add_javascript_functions(js_function,canvas_root_id);
  3353.    /* add read_canvas() etc functions if needed */
  3354.   if( reply_format > 0 ){ add_read_canvas(canvas_root_id,reply_format,reply_precision);}
  3355.   if( use_pan_and_zoom == TRUE ){
  3356.   /* in case of zooming ... */
  3357.   fprintf(js_include_file,"\n<!-- some extra global stuff : need to rethink panning and zooming !!! -->\n\
  3358.  precision = %d;var xmin_start=xmin;var xmax_start=xmax;\
  3359.  var ymin_start=ymin;var ymax_start=xmax;\
  3360.  var zoom_x_increment=0;var zoom_y_increment=0;\
  3361.  var pan_x_increment=0;var pan_y_increment=0;\
  3362.  if(use_ylogscale == 0 ){\
  3363.   zoom_x_increment = (xmax - xmin)/20;zoom_y_increment = (ymax - ymin)/20;pan_x_increment = (xmax - xmin)/20;pan_y_increment = (ymax - ymin)/20;\
  3364.  }else{\
  3365.   zoom_x_increment = (xmax - xmin)/20;\
  3366.   pan_x_increment = (xmax - xmin)/20;\
  3367.  };\
  3368.  function start_canvas%d(type){\
  3369.   switch(type){\
  3370.    case 0:xmin = xmin + zoom_x_increment;ymin = ymin + zoom_y_increment;xmax = xmax - zoom_x_increment;ymax = ymax - zoom_y_increment;break;\
  3371.    case 1:xmin = xmin - zoom_x_increment;ymin = ymin - zoom_y_increment;xmax = xmax + zoom_x_increment;ymax = ymax + zoom_y_increment;break;\
  3372.    case 2:xmin = xmin - pan_x_increment;ymin = ymin ;xmax = xmax - pan_x_increment;ymax = ymax;break;\
  3373.    case 3:xmin = xmin + pan_x_increment;ymin = ymin ;xmax = xmax + pan_x_increment;ymax = ymax;break;\
  3374.    case 4:xmin = xmin;ymin = ymin - pan_y_increment ;xmax = xmax;ymax = ymax - pan_y_increment;break;\
  3375.    case 5:xmin = xmin;ymin = ymin + pan_y_increment ;xmax = xmax;ymax = ymax + pan_y_increment;break;\
  3376.    case 6:location.reload();break;\
  3377.    default:break;\
  3378.   };\
  3379.   if(xmax<=xmin){xmin=xmin_start;xmax=xmax_start;};\
  3380.   if(ymax<=ymin){ymin=ymin_start;ymax=ymax_start;};\
  3381.   try{dragstuff.Zoom(xmin,xmax,ymin,ymax);}catch(e){}\
  3382.   %s\
  3383.  };\
  3384.  start_canvas%d(333);\
  3385. };\n\
  3386. <!-- end wims_canvas_function -->\n\
  3387. wims_canvas_function%d();\n",precision,canvas_root_id,buffer,canvas_root_id,canvas_root_id);
  3388.   }
  3389.   else
  3390.   {
  3391.   /* no zoom, just add buffer */
  3392.   fprintf(js_include_file,"\n<!-- add buffer -->\n\
  3393.  %s\
  3394. };\n\
  3395. <!-- end wims_canvas_function -->\n\
  3396. wims_canvas_function%d();\n",buffer,canvas_root_id);
  3397.   }
  3398. /* done writing the javascript include file */
  3399. fclose(js_include_file);
  3400.  
  3401. }
  3402.  
  3403. /* if using a tooltip, this should always be printed to the *.phtml file, so stdout */
  3404. if(use_tooltip == TRUE){
  3405.   add_js_tooltip(canvas_root_id,tooltip_text,bgcolor,xsize,ysize);
  3406. }
  3407. exit(EXIT_SUCCESS);
  3408. }
  3409. /* end main() */
  3410.  
  3411. /******************************************************************************
  3412. **
  3413. **  sync_input
  3414. **
  3415. **  synchronises input line - reads to end of line, leaving file pointer
  3416. **  at first character of next line.
  3417. **
  3418. **  Used by:
  3419. **  main program - error handling.
  3420. **
  3421. ******************************************************************************/
  3422. void sync_input(FILE *infile)
  3423. {
  3424.         int c = 0;
  3425.  
  3426.         if( c == '\n' || c == ';' ) return;
  3427.         while( ( (c=getc(infile)) != EOF ) && (c != '\n') && (c != '\r') && (c != ';')) ;
  3428.         if( c == EOF ) finished = 1;
  3429.         if( c == '\n' || c == '\r' || c == ';') line_number++;
  3430.         return;
  3431. }
  3432.  
  3433. /******************************************************************************/
  3434.  
  3435. char *str_replace(const char *str, const char *old, const char *new){
  3436. /* http://creativeandcritical.net/str-replace-c/ */
  3437.     if(strlen(str) > MAX_BUFFER){canvas_error("string argument too big");}
  3438.     char *ret, *r;
  3439.     const char *p, *q;
  3440.     size_t oldlen = strlen(old);
  3441.     size_t count = 0;
  3442.     size_t retlen = 0;
  3443.     size_t newlen = strlen(new);
  3444.     if (oldlen != newlen){
  3445.         for (count = 0, p = str; (q = strstr(p, old)) != NULL; p = q + oldlen){
  3446.             count++;
  3447.             retlen = p - str + strlen(p) + count * (newlen - oldlen);
  3448.         }
  3449.     }
  3450.     else
  3451.     {
  3452.         retlen = strlen(str);
  3453.     }
  3454.  
  3455.     if ((ret = malloc(retlen + 1)) == NULL){
  3456.         ret = NULL;
  3457.         canvas_error("string argument is NULL");
  3458.     }
  3459.     else
  3460.     {
  3461.         for (r = ret, p = str; (q = strstr(p, old)) != NULL; p = q + oldlen) {
  3462.             size_t l = q - p;
  3463.             memcpy(r, p, l);
  3464.             r += l;
  3465.             memcpy(r, new, newlen);
  3466.             r += newlen;
  3467.         }
  3468.         strcpy(r, p);
  3469.     }
  3470.     return ret;
  3471. }
  3472.  
  3473. /******************************************************************************/
  3474.  
  3475. char *get_color(FILE *infile , int last){
  3476.     int c,i = 0,is_hex = 0;
  3477.     char temp[MAX_COLOR_STRING], *string;
  3478.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') && ( c != ',' ) && ( c != ';' ) ){
  3479.         if( i > MAX_COLOR_STRING ){ canvas_error("colour string is too big ... ? ");}
  3480.         if( c == '#' ){
  3481.             is_hex = 1;
  3482.         }
  3483.         if( c != ' '){
  3484.             temp[i]=tolower(c);
  3485.             i++;
  3486.         }
  3487.     }
  3488.     if( ( c == '\n' || c == EOF || c == ';' ) && last == 0){canvas_error("expecting more arguments in command");}
  3489.     if( c == '\n' || c == ';' ){ done = TRUE; line_number++; }
  3490.     if( c == EOF ){finished = 1;}
  3491.     if( finished == 1 && last != 1 ){ canvas_error("expected more arguments");}
  3492.     temp[i]='\0';
  3493.     if( strlen(temp) == 0 ){ canvas_error("expected a colorname or hexnumber, but found nothing !!");}
  3494.     if( is_hex == 1 ){
  3495.         char red[3], green[3], blue[3];
  3496.         red[0]   = toupper(temp[1]); red[1]   = toupper(temp[2]); red[2]   = '\0';
  3497.         green[0] = toupper(temp[3]); green[1] = toupper(temp[4]); green[2] = '\0';
  3498.         blue[0]  = toupper(temp[5]); blue[1]  = toupper(temp[6]); blue[2]  = '\0';
  3499.         int r = (int) strtol(red,   NULL, 16);
  3500.         int g = (int) strtol(green, NULL, 16);
  3501.         int b = (int) strtol(blue,  NULL, 16);
  3502.         string = (char *)my_newmem(12);
  3503.         snprintf(string,11,"%d,%d,%d",r,g,b);
  3504.         return string;
  3505.     }
  3506.     else
  3507.     {
  3508.         string = (char *)my_newmem(sizeof(temp));
  3509.         snprintf(string,sizeof(temp),"%s",temp);
  3510.         for( i = 0; i <= NUMBER_OF_COLORNAMES ; i++ ){
  3511.             if( strcmp( colors[i].name , string ) == 0 ){
  3512.                 return colors[i].rgb;
  3513.             }
  3514.         }
  3515.     }
  3516.     /* not found...return error */
  3517.     free(string);string = NULL;
  3518.     canvas_error("I was expecting a color name or hexnumber...but found nothing.");
  3519.     return NULL;
  3520. }
  3521.  
  3522. char *get_string(FILE *infile,int last){ /* last = 0 : more arguments ; last=1 final argument */
  3523.     int c,i=0;
  3524.     char  temp[MAX_BUFFER], *string;
  3525.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') ){
  3526.         temp[i]=c;
  3527.         i++;
  3528.         if(i > MAX_BUFFER){ canvas_error("string size too big...repeat command to fit string");break;}
  3529.     }
  3530.     if( ( c == '\n' || c == EOF ) && last == 0){canvas_error("expecting more arguments in command");}
  3531.     if( c == '\n') { done = TRUE; line_number++; }
  3532.     if( c == EOF ) {
  3533.         finished = 1;
  3534.         if( last != 1 ){ canvas_error("expected more arguments");}
  3535.     }
  3536.     temp[i]='\0';
  3537.     if( strlen(temp) == 0 ){ canvas_error("expected a word or string, but found nothing !!");}
  3538.     string=(char *)my_newmem(strlen(temp));
  3539.     snprintf(string,sizeof(temp),"%s",temp);
  3540.     return string;
  3541. }
  3542.  
  3543. char *get_string_argument(FILE *infile,int last){  /* last = 0 : more arguments ; last=1 final argument */
  3544.     int c,i=0;
  3545.     char temp[MAX_BUFFER], *string;
  3546.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') && ( c != ',')){
  3547.         temp[i]=c;
  3548.         i++;
  3549.         if(i > MAX_BUFFER){ canvas_error("string size too big...will cut it off");break;}
  3550.     }
  3551.     if( ( c == '\n' || c == EOF) && last == 0){canvas_error("expecting more arguments in command");}
  3552.     if( c == '\n') { line_number++; }
  3553.     if( c == EOF ) {finished = 1;}
  3554.     if( finished == 1 && last != 1 ){ canvas_error("expected more arguments");}
  3555.     temp[i]='\0';
  3556.     if( strlen(temp) == 0 ){ canvas_error("expected a word or string (without comma) , but found nothing !!");}
  3557.     string=(char *)my_newmem(sizeof(temp));
  3558.     snprintf(string,sizeof(temp),"%s",temp);
  3559.     done = TRUE;
  3560.     return string;
  3561. }
  3562.  
  3563. double get_real(FILE *infile, int last){ /* accept anything that looks like an number ?  last = 0 : more arguments ; last=1 final argument */
  3564.     int c,i=0,found_calc = 0;
  3565.     double y;
  3566.     char tmp[MAX_INT];
  3567.     while(( (c=getc(infile)) != EOF ) && ( c != ',') && (c != '\n') && ( c != ';')){
  3568.      if( c != ' ' ){
  3569.      /*
  3570.      libmatheval will segfault when for example: "xrange -10,+10" or "xrange -10,10+" is used
  3571.      We will check after assert() if it's a NULL pointer...and exit program via :
  3572.      canvas_error("I'm having trouble parsing your \"expression\" ");
  3573.      */
  3574.       if( i == 0 &&  c == '+' ){
  3575.        continue;
  3576.       }
  3577.       else
  3578.       {
  3579.        if(canvas_iscalculation(c) != 0){
  3580.         found_calc = 1;
  3581.         c = tolower(c);
  3582.        }
  3583.        tmp[i] = c;
  3584.        i++;
  3585.       }
  3586.      }
  3587.      if( i > MAX_INT - 1){canvas_error("number too large");}
  3588.     }
  3589.     if( ( c == '\n' || c == EOF || c == ';' ) && last == 0){canvas_error("expecting more arguments in command");}
  3590.     if( c == '\n' || c == ';' ){ done = TRUE; line_number++; }
  3591.     if( c == EOF ){done = TRUE ; finished = 1;}
  3592.     tmp[i]='\0';
  3593.     if( strlen(tmp) == 0 ){canvas_error("expected a number , but found nothing !!");}
  3594.     if( found_calc == 1 ){ /* use libmatheval to calculate 2*pi/3 */
  3595.      void *f = eval_create(tmp);
  3596.      assert(f);if( f == NULL ){canvas_error("I'm having trouble parsing your \"expression\" ") ;}
  3597.      y = eval_x(f, 1);
  3598.      /* if function is bogus; y = 1 : so no core dumps */
  3599.      eval_destroy(f);
  3600.     }
  3601.     else
  3602.     {
  3603.      y = atof(tmp);
  3604.     }
  3605.     return y;
  3606. }
  3607. void canvas_error(char *msg){
  3608.     fprintf(stdout,"\n</script><hr /><span style=\"color:red\">FATAL syntax error:line %d : %s</span><hr />",line_number-1,msg);
  3609.     finished = 1;
  3610.     exit(EXIT_SUCCESS);
  3611. }
  3612.  
  3613.  
  3614. /* convert x/y coordinates to pixel */
  3615. int x2px(double x){
  3616.  return x*xsize/(xmax - xmin) -  xsize*xmin/(xmax - xmin);
  3617. }
  3618.  
  3619. int y2px(double y){
  3620.  return -1*y*ysize/(ymax - ymin) + ymax*ysize/(ymax - ymin);
  3621. }
  3622.  
  3623. double px2x(int x){
  3624.  return (x*(xmax - xmin)/xsize + xmin);
  3625. }
  3626. double px2y(int y){
  3627.  return (y*(ymax - ymin)/ysize + ymin);
  3628. }
  3629.  
  3630. void add_to_buffer(char *tmp){
  3631.  if( tmp == NULL || tmp == 0 ){ canvas_error("nothing to add_to_buffer()...");}
  3632.  /*  do we have enough space left in buffer[MAX_BUFFER] ? */
  3633.  int space_left = (int) (sizeof(buffer) - strlen(buffer));
  3634.  if( space_left > strlen(tmp)){
  3635.   strncat(buffer,tmp,space_left - 1);/* add safely "tmp" to the string buffer */
  3636.  }
  3637.  else
  3638.  {
  3639.   canvas_error("buffer is too big\n");
  3640.  }
  3641.  tmp = NULL;free(tmp);
  3642.  return;
  3643. }
  3644.  
  3645. void reset(){
  3646.  if(use_filled == TRUE){use_filled = FALSE;}
  3647.  if(use_dashed == TRUE){use_dashed = FALSE;}
  3648.  if(use_rotate == TRUE){use_rotate = FALSE;}
  3649.    onclick = 0;
  3650. }
  3651.  
  3652.  
  3653.  
  3654. /* What reply format in read_canvas();
  3655.  
  3656. note:if userdraw is combined with inputfields...every "userdraw" based answer will append "\n" and  inputfield.value()
  3657. 1 = x1,x2,x3,x4....x_n
  3658.     y1,y2,y3,y4....y_n
  3659.  
  3660.     x/y in pixels
  3661.  
  3662. 2 = x1,x2,x3,x4....x_n
  3663.     y1,y2,y3,y4....y_n
  3664.     x/y in  xrange / yrange coordinate system
  3665.  
  3666. 3 = x1,x2,x3,x4....x_n
  3667.     y1,y2,y3,y4....y_n
  3668.     r1,r2,r3,r4....r_n
  3669.  
  3670.     x/y in pixels
  3671.     r in pixels
  3672.  
  3673. 4 = x1,x2,x3,x4....x_n
  3674.     y1,y2,y3,y4....y_n
  3675.     r1,r2,r3,r4....r_n
  3676.  
  3677.     x/y in  xrange / yrange coordinate system
  3678.     r in pixels
  3679.  
  3680. 5 = Ax1,Ax2,Ax3,Ax4....Ax_n
  3681.     Ay1,Ay2,Ay3,Ay4....Ay_n
  3682.     Bx1,Bx2,Bx3,Bx4....Bx_n
  3683.     By1,By2,By3,By4....By_n
  3684.     Cx1,Cx2,Cx3,Cx4....Cx_n
  3685.     Cy1,Cy2,Cy3,Cy4....Cy_n
  3686.     ....
  3687.     Zx1,Zx2,Zx3,Zx4....Zx_n
  3688.     Zy1,Zy2,Zy3,Zy4....Zy_n
  3689.  
  3690.     x/y in pixels
  3691.  
  3692. 6 = Ax1,Ax2,Ax3,Ax4....Ax_n
  3693.     Ay1,Ay2,Ay3,Ay4....Ay_n
  3694.     Bx1,Bx2,Bx3,Bx4....Bx_n
  3695.     By1,By2,By3,By4....By_n
  3696.     Cx1,Cx2,Cx3,Cx4....Cx_n
  3697.     Cy1,Cy2,Cy3,Cy4....Cy_n
  3698.     ....
  3699.     Zx1,Zx2,Zx3,Zx4....Zx_n
  3700.     Zy1,Zy2,Zy3,Zy4....Zy_n
  3701.  
  3702.     x/y in  xrange / yrange coordinate system
  3703.  
  3704. 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n
  3705.  
  3706.     x/y in pixels
  3707.  
  3708. 8 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n
  3709.  
  3710.     x/y in  xrange / yrange coordinate system
  3711.  
  3712. 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n
  3713.  
  3714.     x/y in pixels
  3715.  
  3716. 10 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n
  3717.  
  3718.     x/y in  xrange / yrange coordinate system
  3719.  
  3720. 11 = Ax1,Ay1,Ax2,Ay2
  3721.      Bx1,By1,Bx2,By2
  3722.      Cx1,Cy1,Cx2,Cy2
  3723.      Dx1,Dy1,Dx2,Dy2
  3724.      ......
  3725.      Zx1,Zy1,Zx2,Zy2
  3726.  
  3727.     x/y in  xrange / yrange coordinate system
  3728.  
  3729. 12 = Ax1,Ay1,Ax2,Ay2
  3730.      Bx1,By1,Bx2,By2
  3731.      Cx1,Cy1,Cx2,Cy2
  3732.      Dx1,Dy1,Dx2,Dy2
  3733.      ......
  3734.      Zx1,Zy1,Zx2,Zy2
  3735.  
  3736.     x/y in pixels
  3737.  
  3738. 13 = Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2,Cx1:Cy1:Cx2:Cy2,Dx1:Dy1:Dx2:Dy2, ... ,Zx1:Zy1:Zx2:Zy2
  3739.  
  3740.     x/y in  xrange / yrange coordinate system
  3741. 14 = Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2....Zx1:Zy1:Zx2:Zy2
  3742.     x/y in pixels
  3743. 15 = reply from inputfields,textareas
  3744.     reply1,reply2,reply3,...,reply_n
  3745.     only fields set write (a.g. will not read 'readonly' inputfield values'
  3746.  
  3747. 16 = read mathml inputfields only
  3748.  
  3749. 17 = read userdraw text only (x1:y1:text1,x2:y2:text2...x_n:y_n:text_n
  3750.  when ready : calculate size_t of string via snprintf(NULL,0,"blah blah...");
  3751.  
  3752. 18 = read clock(s) : H1:M1:S1,H2:M2:S2,...H_n:M_n:S_n
  3753. 19 = return clicked object number (analogue to shape-library onclick)
  3754. 20 = return x/y-data in x-range/y-range of all 'draggable' images
  3755. 21 = return verbatim coordinates (x1:y1) (x2:y2)...(x_n:y_n)
  3756. 22 = array : x1,y1,x2,y2,x3,y3,x4,y4...x_n,y_n
  3757.     x/y in  xrange / yrange coordinate system
  3758. 23 = answertype for a polyline : remove multiple occurences  due to reclick on a point to create next polyline segment
  3759. 24 = read all inputfield values: even those set 'readonly'
  3760. 25 = return all userdrawn arcs in degrees:
  3761. 26 = return all userdrawn arcs in radians:
  3762. 27 = return (only) userdraw inputfields array: x1:y1:text1,x2:y2:text2...
  3763. */
  3764.  
  3765.  
  3766. void add_read_canvas(int canvas_root_id,int type_reply,int reply_precision){
  3767. /* just 1 reply type allowed */
  3768. fprintf(js_include_file,"\
  3769. \n<!-- begin set_reply_precision() -->\n\
  3770. function set_reply_precision(){\
  3771. var len = userdraw_x.length;\
  3772. var prec = %d;\
  3773. for(var p = 0 ; p < len ; p++ ){\
  3774.  userdraw_x[p] = (Math.round(prec*userdraw_x[p]))/prec;\
  3775.  userdraw_y[p] = (Math.round(prec*userdraw_y[p]))/prec;\
  3776. };\
  3777. len = userdraw_radius.length;\
  3778. if( len > 0 ){\
  3779.  for(var p = 0 ; p < len ; p++ ){\
  3780.   userdraw_radius[p] = (Math.round(prec*userdraw_radius[p]))/prec;\
  3781.  };\
  3782. };\
  3783. };",reply_precision);
  3784.  
  3785. switch(type_reply){
  3786. /*
  3787. answers may have:
  3788. x-values,y-values,r-values,input-fields,mathml-inputfields,text-typed answers
  3789. */
  3790.     case 1: fprintf(js_include_file,"\
  3791. \n<!-- begin function 1 read_canvas%d() -->\n\
  3792. read_canvas%d = function(){\
  3793. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3794. set_reply_precision();\
  3795. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3796.  var p = 0;var input_reply = new Array();\
  3797.  if( document.getElementById(\"canvas_input0\")){\
  3798.   var t = 0;\
  3799.   while(document.getElementById(\"canvas_input\"+t)){\
  3800.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3801.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3802.     p++;\
  3803.    };\
  3804.    t++;\
  3805.   };\
  3806.  };\
  3807.  if( typeof userdraw_text != 'undefined' ){\
  3808.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+input_reply + \"\\n\"+userdraw_text;\
  3809.  }\
  3810.  else\
  3811.  {\
  3812.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+input_reply;\
  3813.  }\
  3814. }\
  3815. else\
  3816. {\
  3817.  if( typeof userdraw_text != 'undefined' ){\
  3818.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_text;\
  3819.  }\
  3820.  else\
  3821.  {\
  3822.   return userdraw_x+\"\\n\"+userdraw_y;\
  3823.  }\
  3824. };\
  3825. };\n\
  3826. <!-- end function 1 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  3827.     break;
  3828.     case 2: fprintf(js_include_file,"\
  3829. \n<!-- begin function 2 read_canvas%d() -->\n\
  3830. read_canvas%d = function(){\
  3831. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3832. set_reply_precision();\
  3833. var reply_x = new Array();var reply_y = new Array();var p = 0;\
  3834. var prec = %d;\
  3835. while(userdraw_x[p]){\
  3836.  reply_x[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec;\
  3837.  reply_y[p] = (Math.round(prec*(px2y(userdraw_y[p]))))/prec;\
  3838.  p++;\
  3839. };\
  3840. if(p == 0){alert(\"nothing drawn...\");return;};\
  3841. if( document.getElementById(\"canvas_input0\")){\
  3842.  var p = 0;var input_reply = new Array();\
  3843.  if( document.getElementById(\"canvas_input0\")){\
  3844.   var t = 0;\
  3845.   while(document.getElementById(\"canvas_input\"+t)){\
  3846.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3847.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3848.     p++;\
  3849.    };\
  3850.    t++;\
  3851.   };\
  3852.  };\
  3853.  if( typeof userdraw_text != 'undefined' ){\
  3854.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3855.  }\
  3856.  else\
  3857.  {\
  3858.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply;\
  3859.  }\
  3860. }\
  3861. else\
  3862. {\
  3863.  if( typeof userdraw_text != 'undefined' ){\
  3864.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_text;\
  3865.  }\
  3866.  else\
  3867.  {\
  3868.   return reply_x+\"\\n\"+reply_y;\
  3869.  };\
  3870. };\
  3871. };\n\
  3872. <!-- end function 2 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  3873.     break;
  3874.     case 3: fprintf(js_include_file,"\
  3875. \n<!-- begin function 3 read_canvas%d() -->\n\
  3876. read_canvas%d = function(){\
  3877. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3878. set_reply_precision();\
  3879. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3880.  var p = 0;var input_reply = new Array();\
  3881.  if( document.getElementById(\"canvas_input0\")){\
  3882.   var t = 0;\
  3883.   while(document.getElementById(\"canvas_input\"+t)){\
  3884.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3885.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3886.     p++;\
  3887.    };\
  3888.    t++;\
  3889.   };\
  3890.  };\
  3891.  if( typeof userdraw_text != 'undefined' ){\
  3892.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3893.  }\
  3894.  else\
  3895.  {\
  3896.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+input_reply;\
  3897.  }\
  3898. }\
  3899. else\
  3900. {\
  3901.  if( typeof userdraw_text != 'undefined' ){\
  3902.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+userdrawW_text;\
  3903.  }\
  3904.  else\
  3905.  {\
  3906.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius;\
  3907.  }\
  3908. }\
  3909. };\n\
  3910. <!-- end function 3 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  3911.     break;
  3912.     case 4: fprintf(js_include_file,"\
  3913. \n<!-- begin function 4 read_canvas%d() -->\n\
  3914. read_canvas%d = function(){\
  3915. var prec = %d;\
  3916. var reply_x = new Array();var reply_y = new Array();var p = 0;\
  3917. while(userdraw_x[p]){\
  3918.  reply_x[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec;\
  3919.  reply_y[p] = (Math.round(prec*(px2y(userdraw_y[p]))))/prec;;\
  3920.  p++;\
  3921. };\
  3922. if(p == 0){alert(\"nothing drawn...\");return;};\
  3923. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3924.  var p = 0;var input_reply = new Array();\
  3925.  if( document.getElementById(\"canvas_input0\")){\
  3926.   var t = 0;\
  3927.   while(document.getElementById(\"canvas_input\"+t)){\
  3928.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3929.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3930.     p++;\
  3931.    };\
  3932.    t++;\
  3933.   };\
  3934.  };\
  3935.  if( typeof userdraw_text != 'undefined' ){\
  3936.   return reply_x+\"\\n\"+reply_y +\"\\n\"+userdraw_radius+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3937.  }\
  3938.  else\
  3939.  {\
  3940.   return reply_x+\"\\n\"+reply_y +\"\\n\"+userdraw_radius+\"\\n\"+input_reply;\
  3941.  }\
  3942. }\
  3943. else\
  3944. {\
  3945.  if( typeof userdraw_text != 'undefined' ){\
  3946.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_radius+\"\\n\"+userdraw_text;\
  3947.  }\
  3948.  else\
  3949.  {\
  3950.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_radius;\
  3951.  }\
  3952. };\
  3953. };\n\
  3954. <!-- end function 4 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  3955.     break;
  3956.     /*
  3957.         attention: we reset userdraw_x / userdraw_y  : because  userdraw_x = [][] userdraw_y = [][]
  3958.         used for userdraw multiple paths
  3959.     */
  3960.     case 5: fprintf(js_include_file,"\
  3961. \n<!-- begin function 5 read_canvas%d() -->\n\
  3962. read_canvas%d = function(){\
  3963. set_reply_precision();\
  3964. var p = 0;\
  3965. var reply = \"\";\
  3966. for(p = 0; p < userdraw_x.length;p++){\
  3967.  if(userdraw_x[p] != null ){\
  3968.   reply = reply + userdraw_x[p]+\"\\n\"+userdraw_y[p]+\"\\n\";\
  3969.  };\
  3970. };\
  3971. if(p == 0){alert(\"nothing drawn...\");return;};\
  3972. userdraw_x = [];userdraw_y = [];\
  3973. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3974.  var p = 0;var input_reply = new Array();\
  3975.  if( document.getElementById(\"canvas_input0\")){\
  3976.   var t = 0;\
  3977.   while(document.getElementById(\"canvas_input\"+t)){\
  3978.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3979.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3980.     p++;\
  3981.    };\
  3982.    t++;\
  3983.   };\
  3984.  };\
  3985.  if( typeof userdraw_text != 'undefined' ){\
  3986.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3987.  }\
  3988.  else\
  3989.  {\
  3990.   return reply +\"\\n\"+input_reply;\
  3991.  }\
  3992. }\
  3993. else\
  3994. {\
  3995.  if( typeof userdraw_text != 'undefined' ){\
  3996.   return reply+\"\\n\"+userdraw_text;\
  3997.  }\
  3998.  else\
  3999.  {\
  4000.   return reply;\
  4001.  }\
  4002. };\
  4003. };\n\
  4004. <!-- end function 5 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4005.     break;
  4006.     /*
  4007.         attention: we reset userdraw_x / userdraw_y  : because  userdraw_x = [][] userdraw_y = [][]
  4008.         used for userdraw multiple paths
  4009.     */
  4010.     case 6: fprintf(js_include_file,"\
  4011. \n<!-- begin function 6 read_canvas%d() -->\n\
  4012. read_canvas%d = function(){\
  4013. var p = 0;\
  4014. var reply = \"\";\
  4015. var tmp_x = new Array();\
  4016. var tmp_y = new Array();\
  4017. var prec = %d;\
  4018. for(p = 0 ; p < userdraw_x.length; p++){\
  4019.  tmp_x = userdraw_x[p];\
  4020.  tmp_y = userdraw_y[p];\
  4021.  if(tmp_x != null){\
  4022.   for(var i = 0 ; i < tmp_x.length ; i++){\
  4023.    tmp_x[i] = (Math.round(prec*(px2x(tmp_x[i]))))/prec;\
  4024.    tmp_y[i] = (Math.round(prec*(px2y(tmp_y[i]))))/prec;\
  4025.   };\
  4026.   reply = reply + tmp_x + \"\\n\" + tmp_y +\"\\n\";\
  4027.  };\
  4028. };\
  4029. if(p == 0){alert(\"nothing drawn...\");return;};\
  4030. userdraw_x = [];userdraw_y = [];\
  4031. if( document.getElementById(\"canvas_input0\") ){\
  4032.  var p = 0;var input_reply = new Array();\
  4033.  if( document.getElementById(\"canvas_input0\")){\
  4034.   var t = 0;\
  4035.   while(document.getElementById(\"canvas_input\"+t)){\
  4036.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4037.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4038.     p++;\
  4039.    };\
  4040.    t++;\
  4041.   };\
  4042.  };\
  4043.  if( typeof userdraw_text != 'undefined' ){\
  4044.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4045.  }\
  4046.  else\
  4047.  {\
  4048.   return reply +\"\\n\"+input_reply;\
  4049.  }\
  4050. }\
  4051. else\
  4052. {\
  4053.  if( typeof userdraw_text != 'undefined' ){\
  4054.   return reply +\"\\n\"+userdraw_text;\
  4055.  }\
  4056.  else\
  4057.  {\
  4058.   return reply;\
  4059.  }\
  4060. };\
  4061. };\n\
  4062. <!-- end function 6 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4063.     break;
  4064.     case 7: fprintf(js_include_file,"\
  4065. \n<!-- begin function 7 read_canvas%d() -->\n\
  4066. read_canvas%d = function(){\
  4067. set_reply_precision();\
  4068. var reply = new Array();\
  4069. var p = 0;\
  4070. while(userdraw_x[p]){\
  4071.  reply[p] = userdraw_x[p] +\":\" + userdraw_y[p];\
  4072.  p++;\
  4073. };\
  4074. if(p == 0){alert(\"nothing drawn...\");return;};\
  4075. if( document.getElementById(\"canvas_input0\") ){\
  4076.  var p = 0;var input_reply = new Array();\
  4077.  if( document.getElementById(\"canvas_input0\")){\
  4078.   var t = 0;\
  4079.   while(document.getElementById(\"canvas_input\"+t)){\
  4080.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4081.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4082.     p++;\
  4083.    };\
  4084.    t++;\
  4085.   };\
  4086.  };\
  4087.  if( typeof userdraw_text != 'undefined' ){\
  4088.   return reply+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4089.  }\
  4090.  else\
  4091.  {\
  4092.   return reply+\"\\n\"+input_reply;\
  4093.  }\
  4094. }\
  4095. else\
  4096. {\
  4097.  if( typeof userdraw_text != 'undefined' ){\
  4098.   return reply+\"\\n\"+userdraw_text;\
  4099.  }\
  4100.  else\
  4101.  {\
  4102.   return reply;\
  4103.  }\
  4104. };\
  4105. };\n\
  4106. <!-- end function 7 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4107.     break;
  4108.     case 8: fprintf(js_include_file,"\
  4109. \n<!-- begin function 8 read_canvas%d() -->\n\
  4110. read_canvas%d = function(){\
  4111. var reply = new Array();\
  4112. var p = 0;\
  4113. var prec = %d;\
  4114. while(userdraw_x[p]){\
  4115.  reply[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec +\":\" + (Math.round(prec*(px2y(userdraw_y[p]))))/prec;\
  4116.  p++;\
  4117. };\
  4118. if(p == 0){alert(\"nothing drawn...\");return;};\
  4119. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  4120.  var p = 0;var input_reply = new Array();\
  4121.  if( document.getElementById(\"canvas_input0\")){\
  4122.   var t = 0;\
  4123.   while(document.getElementById(\"canvas_input\"+t)){\
  4124.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4125.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4126.     p++;\
  4127.    };\
  4128.    t++;\
  4129.   };\
  4130.  };\
  4131.  if( typeof userdraw_text != 'undefined' ){\
  4132.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4133.  }\
  4134.  else\
  4135.  {\
  4136.   return reply +\"\\n\"+input_reply;\
  4137.  }\
  4138. }\
  4139. else\
  4140. {\
  4141.  if( typeof userdraw_text != 'undefined' ){\
  4142.   return reply +\"\\n\"+userdraw_text;\
  4143.  }\
  4144.  else\
  4145.  {\
  4146.   return reply;\
  4147.  }\
  4148. };\
  4149. };\n\
  4150. <!-- end function 8 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4151.     break;
  4152.     case 9: fprintf(js_include_file,"\
  4153. \n<!-- begin function 9 read_canvas%d() -->\n\
  4154. read_canvas%d = function(){\
  4155. set_reply_precision();\
  4156. var reply = new Array();\
  4157. var p = 0;\
  4158. while(userdraw_x[p]){\
  4159.  reply[p] = userdraw_x[p] +\":\" + userdraw_y[p] + \":\" + userdraw_radius[p];\
  4160.  p++;\
  4161. };\
  4162. if(p == 0){alert(\"nothing drawn...\");return;};\
  4163. if( document.getElementById(\"canvas_input0\") ){\
  4164.  var p = 0;var input_reply = new Array();\
  4165.  if( document.getElementById(\"canvas_input0\")){\
  4166.   var t = 0;\
  4167.   while(document.getElementById(\"canvas_input\"+t)){\
  4168.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4169.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4170.     p++;\
  4171.    };\
  4172.    t++;\
  4173.   };\
  4174.  };\
  4175.  if( typeof userdraw_text != 'undefined' ){\
  4176.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4177.  }\
  4178.  else\
  4179.  {\
  4180.   return reply +\"\\n\"+input_reply;\
  4181.  }\
  4182. }\
  4183. else\
  4184. {\
  4185.  if( typeof userdraw_text != 'undefined' ){\
  4186.   return reply +\"\\n\"+userdraw_text;\
  4187.  }\
  4188.  else\
  4189.  {\
  4190.   return reply;\
  4191.  }\
  4192. };\
  4193. };\n\
  4194. <!-- end function 9 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4195.     break;
  4196.     case 10: fprintf(js_include_file,"\
  4197. \n<!-- begin function 10 read_canvas%d() -->\n\
  4198. read_canvas%d = function(){\
  4199. var reply = new Array();\
  4200. var p = 0;\
  4201. var prec = %d;\
  4202. while(userdraw_x[p]){\
  4203.  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;\
  4204.  p++;\
  4205. };\
  4206. if(p == 0){alert(\"nothing drawn...\");return;};\
  4207. if( document.getElementById(\"canvas_input0\") ){\
  4208.  var p = 0;var input_reply = new Array();\
  4209.  if( document.getElementById(\"canvas_input0\")){\
  4210.   var t = 0;\
  4211.   while(document.getElementById(\"canvas_input\"+t)){\
  4212.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4213.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4214.     p++;\
  4215.    };\
  4216.    t++;\
  4217.   };\
  4218.  };\
  4219.  if( typeof userdraw_text != 'undefined' ){\
  4220.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4221.  }\
  4222.  else\
  4223.  {\
  4224.   return reply +\"\\n\"+input_reply;\
  4225.  }\
  4226. }\
  4227. else\
  4228. {\
  4229.  if( typeof userdraw_text != 'undefined' ){\
  4230.   return reply +\"\\n\"+userdraw_text;\
  4231.  }\
  4232.  else\
  4233.  {\
  4234.   return reply;\
  4235.  }\
  4236. };\
  4237. };\n\
  4238. <!-- end function 10 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4239.     break;
  4240.     case 11: fprintf(js_include_file,"\
  4241. \n<!-- begin function 11 read_canvas%d() -->\n\
  4242. read_canvas%d = function(){\
  4243. var reply = \"\";\
  4244. var p = 0;\
  4245. var prec = %d;\
  4246. while(userdraw_x[p]){\
  4247.  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\" ;\
  4248.  p = p+2;\
  4249. };\
  4250. if(p == 0){alert(\"nothing drawn...\");return;};\
  4251. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  4252.  var p = 0;var input_reply = new Array();\
  4253.  if( document.getElementById(\"canvas_input0\")){\
  4254.   var t = 0;\
  4255.   while(document.getElementById(\"canvas_input\"+t)){\
  4256.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4257.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4258.     p++;\
  4259.    };\
  4260.    t++;\
  4261.   };\
  4262.  };\
  4263.  if( typeof userdraw_text != 'undefined' ){\
  4264.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4265.  }\
  4266.  else\
  4267.  {\
  4268.   return reply +\"\\n\"+input_reply;\
  4269.  }\
  4270. }\
  4271. else\
  4272. {\
  4273.  if( typeof userdraw_text != 'undefined' ){\
  4274.   return reply +\"\\n\"+userdraw_text;\
  4275.  }\
  4276.  else\
  4277.  {\
  4278.   return reply;\
  4279.  }\
  4280. };\
  4281. };\n\
  4282. <!-- end function 11 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4283.     break;
  4284.     case 12: fprintf(js_include_file,"\
  4285. \n<!-- begin function 12 read_canvas%d() -->\n\
  4286. read_canvas%d = function(){\
  4287. set_reply_precision();\
  4288. var reply = \"\";\
  4289. var p = 0;\
  4290. for(p = 0; p< userdraw_x.lenght;p = p+2){\
  4291.  if(userdraw_x[p] != null){\
  4292.    reply = reply + userdraw_x[p] +\",\" + userdraw_y[p] +\",\" + userdraw_x[p+1] +\",\" + userdraw_y[p+1] +\"\\n\" ;\
  4293.  };\
  4294. };\
  4295. if(p == 0){alert(\"nothing drawn...\");return;};\
  4296. if( document.getElementById(\"canvas_input0\") ){\
  4297.  var p = 0;var input_reply = new Array();\
  4298.  if( document.getElementById(\"canvas_input0\")){\
  4299.   var t = 0;\
  4300.   while(document.getElementById(\"canvas_input\"+t)){\
  4301.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4302.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4303.     p++;\
  4304.    };\
  4305.    t++;\
  4306.   };\
  4307.  };\
  4308.  if( typeof userdraw_text != 'undefined' ){\
  4309.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4310.  }\
  4311.  else\
  4312.  {\
  4313.   return reply +\"\\n\"+input_reply;\
  4314.  }\
  4315. }\
  4316. else\
  4317. {\
  4318.  if( typeof userdraw_text != 'undefined' ){\
  4319.   return reply +\"\\n\"+userdraw_text\
  4320.  }\
  4321.  else\
  4322.  {\
  4323.   return reply;\
  4324.  }\
  4325. };\
  4326. };\n\
  4327. <!-- end function 12 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4328.     break;
  4329.     case 13: fprintf(js_include_file,"\
  4330. \n<!-- begin function 13 read_canvas%d() -->\n\
  4331. read_canvas%d = function(){\
  4332. var reply = new Array();\
  4333. var p = 0;var i = 0;\
  4334. var prec = %d;\
  4335. while(userdraw_x[p]){\
  4336.  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;\
  4337.  p = p+2;i++;\
  4338. };\
  4339. if(p == 0){alert(\"nothing drawn...\");return;};\
  4340. if( document.getElementById(\"canvas_input0\") ){\
  4341.  var p = 0;var input_reply = new Array();\
  4342.  if( document.getElementById(\"canvas_input0\")){\
  4343.   var t = 0;\
  4344.   while(document.getElementById(\"canvas_input\"+t)){\
  4345.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4346.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4347.     p++;\
  4348.    };\
  4349.    t++;\
  4350.   };\
  4351.  };\
  4352.  if( typeof userdraw_text != 'undefined' ){\
  4353.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4354.  }\
  4355.  else\
  4356.  {\
  4357.   return reply +\"\\n\"+input_reply;\
  4358.  }\
  4359. }\
  4360. else\
  4361. {\
  4362.  if( typeof userdraw_text != 'undefined' ){\
  4363.   return reply +\"\\n\"+userdraw_text\
  4364.  }\
  4365.  else\
  4366.  {\
  4367.   return reply;\
  4368.  }\
  4369. };\
  4370. };\n\
  4371. <!-- end function 13 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4372.     break;
  4373.     case 14: fprintf(js_include_file,"\
  4374. \n<!-- begin function 14 read_canvas%d() -->\n\
  4375. read_canvas%d = function(){\
  4376. set_reply_precision();\
  4377. var reply = new Array();\
  4378. var p = 0;var i = 0;\
  4379. while(userdraw_x[p]){\
  4380.  reply[i] = userdraw_x[p] +\":\" + userdraw_y[p] +\":\" + userdraw_x[p+1] +\":\" + userdraw_y[p+1];\
  4381.  p = p+2;i++;\
  4382. };\
  4383. if(p == 0){alert(\"nothing drawn...\");return;};\
  4384. if( document.getElementById(\"canvas_input0\") ){\
  4385.  var p = 0;var input_reply = new Array();\
  4386.  if( document.getElementById(\"canvas_input0\")){\
  4387.   var t = 0;\
  4388.   while(document.getElementById(\"canvas_input\"+t)){\
  4389.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4390.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4391.     p++;\
  4392.    };\
  4393.    t++;\
  4394.   };\
  4395.  };\
  4396.  if( typeof userdraw_text != 'undefined' ){\
  4397.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4398.  }\
  4399.  else\
  4400.  {\
  4401.   return reply +\"\\n\"+input_reply;\
  4402.  }\
  4403. }\
  4404. else\
  4405. {\
  4406.  if( typeof userdraw_text != 'undefined' ){\
  4407.   return reply +\"\\n\"+userdraw_text;\
  4408.  }\
  4409.  else\
  4410.  {\
  4411.   return reply;\
  4412.  }\
  4413. };\
  4414. };\n\
  4415. <!-- end function 14 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4416.     break;
  4417.     case 15: fprintf(js_include_file,"\
  4418. \n<!-- begin function 15  read_canvas%d() -->\n\
  4419. read_canvas%d = function(){\
  4420. var input_reply = new Array();\
  4421. var p = 0;\
  4422. if( document.getElementById(\"canvas_input0\")){\
  4423.  var t = 0;\
  4424.  while(document.getElementById(\"canvas_input\"+t)){\
  4425.   if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4426.    input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4427.    p++;\
  4428.   };\
  4429.   t++;\
  4430.  };\
  4431. };\
  4432. if( typeof userdraw_text != 'undefined' ){\
  4433.   return input_reply +\"\\n\"+userdraw_text;\
  4434. }\
  4435. else\
  4436. {\
  4437.  return input_reply;\
  4438. };\
  4439. };\n\
  4440. <!-- end function 15 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4441.     break;
  4442.     case 16: fprintf(js_include_file,"\
  4443. \n<!-- begin function 16 read_mathml() -->\n\
  4444. function read_mathml(){\
  4445. var reply = new Array();\
  4446. var p = 0;\
  4447. if( document.getElementById(\"mathml0\")){\
  4448.  while(document.getElementById(\"mathml\"+p)){\
  4449.   reply[p] = document.getElementById(\"mathml\"+p).value;\
  4450.   p++;\
  4451.  };\
  4452. };\
  4453. return reply;\
  4454. };\
  4455. this.read_mathml = read_mathml;\n\
  4456. <!-- end function 16 read_mathml() -->");
  4457.     break;
  4458.     case 17:  fprintf(js_include_file,"\
  4459. \n<!-- begin function 17 read_canvas%d() -->\n\
  4460. read_canvas%d = function(){\
  4461. if( userdraw_text.length == 0){alert(\"no text typed...\");return;}\
  4462. return userdraw_text;\
  4463. };\n\
  4464. <!-- end function 17 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4465.     break;
  4466.     case 18: fprintf(js_include_file,"\
  4467. \n<!-- begin function 18 read_canvas%d() -->\n\
  4468. read_canvas%d = function(){\
  4469. var p = 0;\
  4470. var reply = new Array();\
  4471. var name;\
  4472. var t = true;\
  4473. var h;var m;var s;\
  4474. while(t){\
  4475.  try{\
  4476.   name = eval('clocks'+p);\
  4477.   h = name.H;m = name.M;s = name.S;\
  4478.   if(s < 0){s = 60 + s;m = m - 1;};\
  4479.   if(m < 0){m = 60 + m;h = h - 1;};\
  4480.   if(h < 0){h = 12 + h;};\
  4481.   h = parseInt((h+m/60+s/3600)%%12);m = parseInt((m + s/60)%%60);s = parseInt(s%%60);\
  4482.   reply[p] = h+\":\"+m+\":\"+s;\
  4483.   p++;\
  4484.  }catch(e){t=false;};\
  4485. };\
  4486. if( p == 0 ){alert(\"clock(s) not modified...\");return;}\
  4487. return reply;\
  4488. };\n\
  4489. <!-- end function 18 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4490.     break;
  4491.     case 19: fprintf(js_include_file,"\
  4492. \n<!-- begin function 19 read_canvas%d() -->\n\
  4493. read_canvas%d = function(){\
  4494. return reply[0];\
  4495. };\n\
  4496. <!-- end function 19 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4497.     break;
  4498.     case 20: fprintf(js_include_file,"\
  4499. \n<!-- begin function 20 read_canvas%d() -->\n\
  4500. read_canvas%d = function(){\
  4501. var prec = %d;\
  4502. var len  = ext_drag_images.length;\
  4503. var reply = new Array(len);\
  4504. for(var p = 0 ; p < len ; p++){\
  4505.    var img = ext_drag_images[p];\
  4506.    reply[p] = (Math.round(prec*(px2x(img[6]))))/prec+\":\"+(Math.round(prec*(px2y(img[7]))))/prec;\
  4507. };\
  4508. return reply;\
  4509. };\n\
  4510. <!-- end function 20 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4511.     break;
  4512.     case 21: fprintf(js_include_file,"\
  4513. \n<!-- begin function 21 read_canvas%d() -->\n\
  4514. read_canvas%d = function(){\
  4515. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  4516. var reply_coord = new Array();var p = 0;\
  4517. var prec = %d;\
  4518. while(userdraw_x[p]){\
  4519.  reply_coord[p] = \"(\"+(Math.round(prec*(px2x(userdraw_x[p]))))/prec+\":\"+(Math.round(prec*(px2y(userdraw_y[p]))))/prec+\")\";\
  4520.  p++;\
  4521. };\
  4522. if(p == 0){alert(\"nothing drawn...\");return;};\
  4523. if( document.getElementById(\"canvas_input0\") ){\
  4524.  var p = 0;var input_reply = new Array();\
  4525.  if( document.getElementById(\"canvas_input0\")){\
  4526.   var t = 0;\
  4527.   while(document.getElementById(\"canvas_input\"+t)){\
  4528.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4529.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4530.     p++;\
  4531.    };\
  4532.    t++;\
  4533.   };\
  4534.  };\
  4535.  if( typeof userdraw_text != 'undefined' ){\
  4536.   return reply_coord+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4537.  }\
  4538.  else\
  4539.  {\
  4540.   return reply_coord+\"\\n\"+input_reply;\
  4541.  }\
  4542. }\
  4543. else\
  4544. {\
  4545.  if( typeof userdraw_text != 'undefined' ){\
  4546.   return reply_coord+\"\\n\"+userdraw_text;\
  4547.  }\
  4548.  else\
  4549.  {\
  4550.   return reply_coord;\
  4551.  };\
  4552. };\
  4553. };\n\
  4554. <!-- end function 21 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4555.     break;
  4556.     case 22: fprintf(js_include_file,"\
  4557. \n<!-- begin function 22 read_canvas%d() -->\n\
  4558. read_canvas%d = function(){\
  4559. var reply = new Array();\
  4560. var lu = userdraw_x.length;\
  4561. if(lu == 0){alert(\"nothing drawn...\");return;};\
  4562. var idx = 0;\
  4563. var prec = %d;\
  4564. for(var p = 0 ; p < lu ; p++){\
  4565.  reply[idx] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec;idx++;\
  4566.  reply[idx] = (Math.round(prec*(px2y(userdraw_y[p]))))/prec;idx++;\
  4567. };\
  4568. if( document.getElementById(\"canvas_input0\") ){\
  4569.  var p = 0;var input_reply = new Array();\
  4570.  if( document.getElementById(\"canvas_input0\")){\
  4571.   var t = 0;\
  4572.   while(document.getElementById(\"canvas_input\"+t)){\
  4573.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4574.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4575.     p++;\
  4576.    };\
  4577.    t++;\
  4578.   };\
  4579.  };\
  4580.  if( typeof userdraw_text != 'undefined' ){\
  4581.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4582.  }\
  4583.  else\
  4584.  {\
  4585.   return reply +\"\\n\"+input_reply;\
  4586.  }\
  4587. }\
  4588. else\
  4589. {\
  4590.  if( typeof userdraw_text != 'undefined' ){\
  4591.   return reply +\"\\n\"+userdraw_text;\
  4592.  }\
  4593.  else\
  4594.  {\
  4595.   return reply;\
  4596.  }\
  4597. };\
  4598. };\n\
  4599. <!-- end function 22 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4600.     break;
  4601.     case 23: fprintf(js_include_file,"\
  4602. \n<!-- begin function 23 read_canvas%d() default 5 px marge -->\n\
  4603. read_canvas%d = function(){\
  4604. if( userdraw_x.length < 2){alert(\"nothing drawn...\");return;}\
  4605. var lu = userdraw_x.length;\
  4606. if( lu != userdraw_y.length ){ alert(\"x / y mismatch !\");return;}\
  4607. var reply_x = new Array();var reply_y = new Array();\
  4608. var marge = 5;var p = 0;\
  4609. var prec = %d;\
  4610. for(var i = 0; i < lu - 1 ; i++ ){\
  4611.  if( Math.abs(userdraw_x[i] - userdraw_x[i+1])){\
  4612.   reply_x[p] = (Math.round(prec*(px2x(userdraw_x[i]))))/prec;reply_y[p] = (Math.round(prec*(px2y(userdraw_y[i]))))/prec;\
  4613.   if( isNaN(reply_x[p]) || isNaN(reply_y[p]) ){ alert(\"hmmmm ?\");return; };\
  4614.   p++;\
  4615.  };\
  4616.  reply_x[p] = (Math.round(prec*(px2x(userdraw_x[lu-1]))))/prec;reply_y[p] = (Math.round(prec*(px2y(userdraw_y[lu-1]))))/prec;\
  4617. };\
  4618. if( document.getElementById(\"canvas_input0\")){\
  4619.  var p = 0;var input_reply = new Array();\
  4620.  if( document.getElementById(\"canvas_input0\")){\
  4621.   var t = 0;\
  4622.   while(document.getElementById(\"canvas_input\"+t)){\
  4623.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4624.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4625.     p++;\
  4626.    };\
  4627.    t++;\
  4628.   };\
  4629.  };\
  4630.  if( typeof userdraw_text != 'undefined' ){\
  4631.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4632.  }\
  4633.  else\
  4634.  {\
  4635.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply;\
  4636.  }\
  4637. }\
  4638. else\
  4639. {\
  4640.  if( typeof userdraw_text != 'undefined' ){\
  4641.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_text;\
  4642.  }\
  4643.  else\
  4644.  {\
  4645.   return reply_x+\"\\n\"+reply_y;\
  4646.  };\
  4647. };\
  4648. };\n\
  4649. <!-- end function 23 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4650.     break;
  4651.     case 24: fprintf(js_include_file,"\n\
  4652. <!-- begin function 24  read_canvas%d() -->\n\
  4653. read_canvas%d = function(){\
  4654. var input_reply = new Array();\
  4655. var p = 0;\
  4656. if( document.getElementById(\"canvas_input0\")){\
  4657.  while(document.getElementById(\"canvas_input\"+p)){\
  4658.    input_reply[p] = document.getElementById(\"canvas_input\"+p).value;\
  4659.    p++;\
  4660.  };\
  4661.  return input_reply;\
  4662. };\
  4663. };\n\
  4664. <!-- end function 24 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4665.     break;
  4666.     case 25:
  4667.     fprintf(js_include_file,"\n<!-- begin function 25 read_canvas%d() : angle(s) in degrees-->\n\
  4668. read_canvas%d = function(){\
  4669. if( userdraw_radius.length < 1){alert(\"nothing drawn...\");return;}\
  4670. var lu = userdraw_radius.length;\
  4671. var prec = %d;\
  4672. var angle_reply = new Array(lu);\
  4673. for(var p = 0 ; p < lu ; p++){\
  4674.  angle_reply[p] = (Math.round(prec*180*(userdraw_radius[p])/Math.PI))/prec;\
  4675. };\
  4676. return angle_reply;\
  4677. };\n\
  4678. <!-- end function 25 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4679.     break;
  4680.     case 26:
  4681.     fprintf(js_include_file,"\n<!-- begin function 26 read_canvas%d() : angle(s) in radians-->\n\
  4682. read_canvas%d = function(){\
  4683. if( userdraw_radius.length < 1){alert(\"nothing drawn...\");return;}\
  4684. var lu = userdraw_radius.length;\
  4685. var prec = %d;\
  4686. var angle_reply = new Array(lu);\
  4687. for(var p = 0 ; p < lu ; p++){\
  4688.  angle_reply[p] = (Math.round(prec*(userdraw_radius[p])))/prec;\
  4689. };\
  4690. return angle_reply;\
  4691. };\n\
  4692. <!-- end function 26 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4693.     break;
  4694.     case 27:
  4695.     fprintf(js_include_file,"\n<!-- begin function 27 read_canvas%d()  : inputfield(s) location and their values : -->\n\
  4696. read_canvas%d = function(){\
  4697. var lu = userdraw_x.length;\
  4698. if( lu < 1){alert(\"nothing drawn...\");return;}\
  4699. set_reply_precision();\
  4700. var prec = %d;\
  4701. for(var p = 0 ; p < lu ; p++){\
  4702.   reply[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec+\":\"+(Math.round(prec*(px2y(userdraw_y[p]))))/prec+\":\"+ document.getElementById(\"canvas_input\"+p).value;\
  4703. };\
  4704. return reply;\
  4705. };\n\
  4706. <!-- end function 27 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4707.     break;
  4708.     default: canvas_error("hmmm unknown replyformat...");break;
  4709. }
  4710.  return;
  4711. }
  4712.  
  4713.  
  4714. /*
  4715.  add drawfunction :
  4716.  - functions used by userdraw_primitives (circle,rect,path,triangle...)
  4717.  - things not covered by the drag&drop library (static objects like parallel, lattice ,gridfill , imagefill)
  4718.  - grid / mathml
  4719.  - will not scale or zoom in
  4720.  - will not be filled via pixel operations like fill / floodfill / filltoborder / clickfill
  4721.  - is printed directly into 'js_include_file'
  4722. */
  4723.  
  4724. void add_javascript_functions(int js_functions[],int canvas_root_id){
  4725. int i;
  4726. for(i = 0 ; i < MAX_JS_FUNCTIONS; i++){
  4727.  if( js_functions[i] == 1){
  4728.     switch(i){
  4729.     case DRAG_EXTERNAL_IMAGE:
  4730. fprintf(js_include_file,"\n<!-- drag external images --->\n\
  4731. var external_canvas = create_canvas%d(7,xsize,ysize);\
  4732. var external_ctx = external_canvas.getContext(\"2d\");\
  4733. var external_canvas_rect = external_canvas.getBoundingClientRect();\
  4734. canvas_div.addEventListener(\"mousedown\",setxy,false);\
  4735. canvas_div.addEventListener(\"mouseup\",dragstop,false);\
  4736. canvas_div.addEventListener(\"mousemove\",dragxy,false);\
  4737. var selected_image = null;\
  4738. var ext_image_cnt = 0;\
  4739. var ext_drag_images = new Array();\
  4740. function drag_external_image(URL,sx,sy,swidth,sheight,x0,y0,width,height,idx,draggable){\
  4741. ext_image_cnt = idx;\
  4742. var image = new Image();\
  4743. image.src = URL;\
  4744. image.onload = function(){\
  4745.  if( x0 < 1 ){ x0 = 0; };if( y0 < 1 ){ y0 = 0; };if( sx < 1 ){ sx = 0; };if( sy < 1 ){ sy = 0; };\
  4746.  if( width < 1 ){ width = image.width; };if( height < 1 ){ height = image.height; };\
  4747.  if( swidth < 1 ){ swidth = image.width; };if( sheight < 1 ){ sheight = image.height; };\
  4748.  var img = new Array(10);\
  4749.  img[0] = draggable;img[1] = image;img[2] = sx;img[3] = sy;img[4] = swidth;img[5] = sheight;\
  4750.  img[6] = x0;img[7] = y0;img[8] = width;img[9] = height;\
  4751.  ext_drag_images[idx] = img;\
  4752.  external_ctx.drawImage(img[1],img[2],img[3],img[4],img[5],img[6],img[7],img[8],img[9]);\
  4753. };\
  4754. };\
  4755. function dragstop(evt){\
  4756. selected_image = null;return;\
  4757. };\
  4758. function dragxy(evt){\
  4759. if( selected_image != null ){\
  4760.  var xoff = (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft);\
  4761.  var yoff = (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);\
  4762.  var s_img = ext_drag_images[selected_image];\
  4763.  s_img[6] = evt.clientX - external_canvas_rect.left + xoff;\
  4764.  s_img[7] = evt.clientY - external_canvas_rect.top + yoff;\
  4765.  ext_drag_images[selected_image] = s_img;\
  4766.  external_ctx.clearRect(0,0,xsize,ysize);\
  4767.  for(var i = 0; i <= ext_image_cnt ; i++){\
  4768.   var img = ext_drag_images[i];\
  4769.   external_ctx.drawImage(img[1],img[2],img[3],img[4],img[5],img[6],img[7],img[8],img[9]);\
  4770.  };\
  4771. };\
  4772. };\
  4773. function setxy(evt){\
  4774. if( ! selected_image && evt.which == 1 ){\
  4775.  var xoff = (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft);\
  4776.  var yoff = (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);\
  4777.  var xm = evt.clientX - external_canvas_rect.left + xoff;\
  4778.  var ym = evt.clientY - external_canvas_rect.top + yoff;\
  4779.  for(var p = 0 ; p <= ext_image_cnt ; p++){\
  4780.   var img = ext_drag_images[p];\
  4781.   if( img[0] == 1 ){\
  4782.    var w = img.width;\
  4783.    var h = img.height;\
  4784.    if( xm > img[6] && xm < img[6] + img[4]){\
  4785.     if( ym > img[7] && ym < img[7] + img[5]){\
  4786.      img[6] = xm;\
  4787.      img[7] = ym;\
  4788.      ext_drag_images[p] = img;\
  4789.      selected_image = p;\
  4790.      dragxy(evt);\
  4791.     };\
  4792.    };\
  4793.   };\
  4794.  };\
  4795. }\
  4796. else\
  4797. {\
  4798.  selected_image = null;\
  4799. };\
  4800. };",canvas_root_id);
  4801.     break;
  4802.  
  4803.     case DRAW_EXTERNAL_IMAGE:
  4804. fprintf(js_include_file,"\n<!-- draw external images -->\n\
  4805. var draw_external_image = function(URL,sx,sy,swidth,sheight,x0,y0,width,height,draggable){\
  4806. var image = new Image();\
  4807. image.src = URL;\
  4808. var canvas_bg_div = document.getElementById(\"canvas_div%d\");\
  4809. image.onload = function(){\
  4810.  if( x0 < 1 ){ x0 = 0; };\
  4811.  if( y0 < 1 ){ y0 = 0; };\
  4812.  if( sx < 1 ){ sx = 0; };\
  4813.  if( sy < 1 ){ sy = 0; };\
  4814.  if( width < 1 ){ width = image.width;};\
  4815.  if( height < 1 ){ height = image.height;};\
  4816.  if( swidth < 1 ){ swidth = image.width;};\
  4817.  if( sheight < 1 ){ sheight = image.height;};\
  4818.  var ml = x0 - sx;\
  4819.  var mh = y0 - sy;\
  4820.  canvas_bg_div.style.backgroundPosition= \"left \"+ml+\"px top \"+mh+\"px\";\
  4821.  canvas_bg_div.style.backgroundSize = width+\"px \"+height+\"px\";\
  4822.  canvas_bg_div.style.backgroundRepeat = \"no-repeat\";\
  4823.  canvas_bg_div.style.backgroundPosition= sx+\"px \"+sy+\"px\";\
  4824.  canvas_bg_div.style.backgroundImage = \"url(\" + URL + \")\";\
  4825. };\
  4826. };",canvas_root_id);
  4827.     break;
  4828.     case DRAW_GRIDFILL:/* not used for userdraw */
  4829. fprintf(js_include_file,"\n<!-- draw gridfill -->\n\
  4830. var draw_gridfill = function(canvas_type,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize){\
  4831. var obj;\
  4832. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4833.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4834. }\
  4835. else\
  4836. {\
  4837.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4838. };\
  4839. var ctx = obj.getContext(\"2d\");\
  4840. var x,y;\
  4841. snap_x = dx;snap_y = dy;\
  4842. ctx.save();\
  4843. ctx.strokeStyle=\"rgba(\"+color+\",\"+opacity+\")\";\
  4844. for( x = x0 ; x < xsize+dx ; x = x + dx ){\
  4845.    ctx.moveTo(x,y0);\
  4846.    ctx.lineTo(x,ysize);\
  4847. };\
  4848. for( y = y0 ; y < ysize+dy; y = y + dy ){\
  4849.    ctx.moveTo(x0,y);\
  4850.    ctx.lineTo(xsize,y);\
  4851. };\
  4852. ctx.stroke();\
  4853. ctx.restore();\
  4854. return;};",canvas_root_id,canvas_root_id,canvas_root_id);
  4855.     break;
  4856.  
  4857.     case DRAW_IMAGEFILL:/* not  used for userdraw */
  4858. fprintf(js_include_file,"\n<!-- draw imagefill -->\n\
  4859. var draw_imagefill = function(canvas_type,x0,y0,URL,xsize,ysize){\
  4860. var obj;\
  4861. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4862.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4863. }\
  4864. else\
  4865. {\
  4866.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4867. };\
  4868. var ctx = obj.getContext(\"2d\");\
  4869. ctx.save();\
  4870. var img = new Image();\
  4871. img.src = URL;\
  4872. img.onload = function(){\
  4873.  if( (img.width > xsize-x0) && (img.height > ysize-y0) ){\
  4874.    ctx.drawImage(img,x0,y0,xsize,ysize);\
  4875.  }\
  4876.  else\
  4877.  {\
  4878.    var repeat = \"repeat\";\
  4879.    if(img.width > xsize - x0){\
  4880.         repeat = \"repeat-y\";\
  4881.    }\
  4882.    else\
  4883.    {\
  4884.     if( img.height > ysize -x0 ){\
  4885.      repeat = \"repeat-x\";\
  4886.     }\
  4887.    }\
  4888.    var pattern = ctx.createPattern(img,repeat);\
  4889.    ctx.rect(x0,y0,xsize,ysize);\
  4890.    ctx.fillStyle = pattern;\
  4891.  }\
  4892.  ctx.fill();\
  4893. };\
  4894. ctx.restore();\
  4895. return;\
  4896. };",canvas_root_id,canvas_root_id,canvas_root_id);
  4897.     break;
  4898.  
  4899.     case DRAW_DOTFILL:/* not  used for userdraw */
  4900. fprintf(js_include_file,"\n<!-- draw dotfill -->\n\
  4901. var draw_dotfill = function(canvas_type,x0,y0,dx,dy,radius,color,opacity,xsize,ysize){\
  4902. var obj;\
  4903. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4904.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4905. }\
  4906. else\
  4907. {\
  4908.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4909. };\
  4910. var ctx = obj.getContext(\"2d\");\
  4911. var x,y;\
  4912. ctx.closePath();\
  4913. ctx.save();\
  4914. snap_x = dx;snap_y = dy;\
  4915. ctx.fillStyle=\"rgba(\"+color+\",\"+opacity+\")\";\
  4916. for( x = x0 ; x < xsize+dx ; x = x + dx ){\
  4917.  for( y = y0 ; y < ysize+dy ; y = y + dy ){\
  4918.   ctx.arc(x,y,radius,0,2*Math.PI,false);\
  4919.   ctx.closePath();\
  4920.  }\
  4921. }\
  4922. ctx.fill();\
  4923. ctx.restore();\
  4924. return;};",canvas_root_id,canvas_root_id,canvas_root_id);
  4925.     break;
  4926.  
  4927.     case DRAW_DIAMONDFILL:/* not used for userdraw */
  4928. fprintf(js_include_file,"\n<!-- draw hatch fill -->\n\
  4929. var draw_diamondfill = function(canvas_type,x0,y0,dx,dy,linewidth,stroke_color,stroke_opacity,xsize,ysize){\
  4930.  var obj;\
  4931. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4932.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4933. }\
  4934. else\
  4935. {\
  4936.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4937. };\
  4938. var ctx = obj.getContext(\"2d\");\
  4939. var x;\
  4940. var y;\
  4941. ctx.save();\
  4942. ctx.lineWidth = linewidth;\
  4943. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4944. y = ysize;\
  4945. for( x = x0 ; x < xsize ; x = x + dx ){\
  4946.  ctx.moveTo(x,y0);\
  4947.  ctx.lineTo(xsize,y);\
  4948.  y = y - dy;\
  4949. };\
  4950. y = y0;\
  4951. for( x = xsize ; x > 0 ; x = x - dx){\
  4952.  ctx.moveTo(x,ysize);\
  4953.  ctx.lineTo(x0,y);\
  4954.  y = y + dy;\
  4955. };\
  4956. x = x0;\
  4957. for( y = y0 ; y < ysize ; y = y + dy ){\
  4958.  ctx.moveTo(xsize,y);\
  4959.  ctx.lineTo(x,ysize);\
  4960.  x = x + dx;\
  4961. };\
  4962. x = xsize;\
  4963. for( y = ysize ; y > y0 ; y = y - dy ){\
  4964.  ctx.moveTo(x,y0);\
  4965.  ctx.lineTo(x0,y);\
  4966.  x = x - dx;\
  4967. };\
  4968. ctx.stroke();\
  4969. ctx.restore();\
  4970. return;\
  4971. }",canvas_root_id,canvas_root_id,canvas_root_id);
  4972.     break;
  4973.  
  4974.     case DRAW_HATCHFILL:/* not used for userdraw */
  4975. fprintf(js_include_file,"\n<!-- draw hatch fill -->\n\
  4976. var draw_hatchfill = function(canvas_type,x0,y0,dx,dy,linewidth,stroke_color,stroke_opacity,xsize,ysize){\
  4977.  var obj;\
  4978. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4979.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4980. }\
  4981. else\
  4982. {\
  4983.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4984. };\
  4985. var ctx = obj.getContext(\"2d\");\
  4986. var x;\
  4987. var y;\
  4988. ctx.save();\
  4989. ctx.lineWidth = linewidth;\
  4990. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4991. y = ysize;\
  4992. for( x = x0 ; x < xsize ; x = x + dx ){\
  4993.  ctx.moveTo(x,y0);\
  4994.  ctx.lineTo(xsize,y);\
  4995.  y = y - dy;\
  4996. };\
  4997. y = y0;\
  4998. for( x = xsize ; x >= dx ; x = x - dx){\
  4999.  ctx.moveTo(x,ysize);\
  5000.  ctx.lineTo(x0,y);\
  5001.  y = y + dy;\
  5002. };\
  5003. ctx.stroke();\
  5004. ctx.restore();\
  5005. return;\
  5006. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5007.     break;
  5008.     case DRAW_CIRCLES:/*  used for userdraw */
  5009. fprintf(js_include_file,"\n<!-- draw circles -->\n\
  5010. 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){\
  5011. ctx.save();\
  5012. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5013. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5014. ctx.lineWidth = line_width;\
  5015. for(var p = 0 ; p < x_points.length ; p++ ){\
  5016.  ctx.beginPath();\
  5017.  ctx.arc(x_points[p],y_points[p],radius[p],0,2*Math.PI,false);\
  5018.  ctx.closePath();\
  5019.  if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5020.  if(use_filled == 1){ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();}\
  5021.  ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5022.  ctx.stroke();\
  5023. }\
  5024. ctx.restore();\
  5025. return;\
  5026. };");
  5027.     break;
  5028.     case DRAW_POLYLINE:/* user for userdraw : draw lines through points */
  5029. fprintf(js_include_file,"\n<!-- draw polyline -->\n\
  5030. 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){\
  5031. ctx.save();\
  5032. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5033. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5034. ctx.lineWidth = line_width;\
  5035. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5036. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5037. ctx.clearRect(0,0,xsize,ysize);\
  5038. ctx.beginPath();\
  5039. for(var p = 0 ; p < x_points.length-1 ; p++ ){\
  5040.  ctx.moveTo(x_points[p],y_points[p]);\
  5041.  ctx.lineTo(x_points[p+1],y_points[p+1]);\
  5042. }\
  5043. ctx.closePath();\
  5044. ctx.stroke();\
  5045. ctx.fillStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5046. for(var p = 0 ; p < x_points.length ; p++ ){\
  5047.  ctx.beginPath();\
  5048.  ctx.arc(x_points[p],y_points[p],line_width,0,2*Math.PI,false);\
  5049.  ctx.closePath();ctx.fill();ctx.stroke();\
  5050. };\
  5051. ctx.restore();\
  5052. return;\
  5053. };");
  5054.     break;
  5055.  
  5056.     case DRAW_SEGMENTS:/*  used for userdraw */
  5057. fprintf(js_include_file,"\n<!-- draw segments -->\n\
  5058. 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){\
  5059. ctx.save();\
  5060. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5061. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5062. ctx.lineWidth = line_width;\
  5063. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5064. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5065. for(var p = 0 ; p < x_points.length ; p = p+2 ){\
  5066.  ctx.beginPath();\
  5067.  ctx.moveTo(x_points[p],y_points[p]);\
  5068.  ctx.lineTo(x_points[p+1],y_points[p+1]);\
  5069.  ctx.closePath();\
  5070.  ctx.stroke();\
  5071.  }\
  5072.  ctx.restore();\
  5073.  return;\
  5074. };");
  5075.     break;
  5076.  
  5077.     case DRAW_LINES:/*  used for userdraw */
  5078. fprintf(js_include_file,"\n<!-- draw lines -->\n\
  5079. function calc_line(x1,x2,y1,y2){\
  5080. var marge = 2;\
  5081. if(x1 < x2+marge && x1>x2-marge){\
  5082.  return [x1,0,x1,ysize];\
  5083. };\
  5084. if(y1 < y2+marge && y1>y2-marge){\
  5085.  return [0,y1,xsize,y1];\
  5086. };\
  5087. var Y1 = y1 - (x1)*(y2 - y1)/(x2 - x1);\
  5088. var Y2 = y1 + (xsize - x1)*(y2 - y1)/(x2 - x1);\
  5089. return [0,Y1,xsize,Y2];\
  5090. };\
  5091. 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){\
  5092. ctx.save();\
  5093. var line = new Array(4);\
  5094. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5095. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5096. ctx.lineWidth = line_width;\
  5097. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5098. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5099. for(var p = 0 ; p < x_points.length ; p = p+2 ){\
  5100.  line = calc_line(x_points[p],x_points[p+1],y_points[p],y_points[p+1]);\
  5101.  ctx.beginPath();\
  5102.  ctx.moveTo(line[0],line[1]);\
  5103.  ctx.lineTo(line[2],line[3]);\
  5104.  ctx.closePath();\
  5105.  ctx.stroke();\
  5106.  }\
  5107.  ctx.restore();\
  5108.  return;\
  5109. };");
  5110.     break;
  5111.  
  5112.     case DRAW_DEMILINES:/*  used for userdraw */
  5113. fprintf(js_include_file,"\n<!-- draw demilines -->\n\
  5114. function find_inf_point(x1,y1,x2,y2){\
  5115. if(x1<x2+2 && x1>x2-2){if(y1<y2){return [x1,y1,x1,ysize];}else{return [x1,0,x1,y1];};};\
  5116. var rc = (y2 - y1)/(x2 - x1);var q = y1 - (x1)*rc;\
  5117. if( x1 < x2 ){ return [x1,y1,xsize,rc*xsize+q];}else{return [x1,y1,0,q];};\
  5118. };\
  5119. 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){\
  5120. ctx.save();\
  5121. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5122. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5123. ctx.lineWidth = line_width;\
  5124. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5125. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5126. var pair = new Array(4);\
  5127. for(var p = 0 ; p < x_points.length ; p = p+2 ){\
  5128.  pair = find_inf_point(x_points[p],y_points[p],x_points[p+1],y_points[p+1]);\
  5129.  ctx.beginPath();\
  5130.  ctx.moveTo(pair[0],pair[1]);\
  5131.  ctx.lineTo(pair[2],pair[3]);\
  5132.  ctx.closePath();\
  5133.  ctx.stroke();\
  5134.  }\
  5135.  ctx.restore();\
  5136.  return;\
  5137. };");
  5138.     break;
  5139.  
  5140.     case DRAW_CROSSHAIRS:/*  used for userdraw */
  5141. fprintf(js_include_file,"\n<!-- draw crosshairs  -->\n\
  5142. var draw_crosshairs = function(ctx,x_points,y_points,line_width,crosshair_size,stroke_color,stroke_opacity,use_rotate,angle,use_affine,affine_matrix){\
  5143. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5144. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5145. ctx.lineWidth = line_width;\
  5146. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5147. var x1,x2,y1,y2;\
  5148. for(var p = 0 ; p < x_points.length ; p++ ){\
  5149.  x1 = x_points[p] - crosshair_size;\
  5150.  x2 = x_points[p] + crosshair_size;\
  5151.  y1 = y_points[p] - crosshair_size;\
  5152.  y2 = y_points[p] + crosshair_size;\
  5153.  ctx.beginPath();\
  5154.  ctx.moveTo(x1,y1);\
  5155.  ctx.lineTo(x2,y2);\
  5156.  ctx.closePath();\
  5157.  ctx.stroke();\
  5158.  ctx.beginPath();\
  5159.  ctx.moveTo(x2,y1);\
  5160.  ctx.lineTo(x1,y2);\
  5161.  ctx.closePath();\
  5162.  ctx.stroke();\
  5163. }\
  5164. ctx.restore();\
  5165.  return;\
  5166. };");
  5167.     break;
  5168.  
  5169.     case DRAW_RECTS:/*  used for userdraw */
  5170. fprintf(js_include_file,"\n<!-- draw rects -->\n\
  5171. 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){\
  5172. ctx.save();\
  5173. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5174. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5175. ctx.lineWidth = line_width;\
  5176. ctx.strokeStyle = \"rgba('+stroke_color+','+stroke_opacity+')\";\
  5177. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];}};\
  5178. for(var p = 0 ; p < x_points.length ; p = p + 2){\
  5179.  ctx.beginPath();\
  5180.  ctx.rect(x_points[p],y_points[p],x_points[p+1]-x_points[p],y_points[p+1]-y_points[p]);\
  5181.  ctx.closePath();\
  5182.  if(use_filled == 1 ){ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();}\
  5183.  ctx.stroke();\
  5184. };\
  5185. ctx.restore();\
  5186. return;\
  5187. };");
  5188.     break;
  5189.  
  5190.     case DRAW_ROUNDRECTS:/*  used for userdraw */
  5191. fprintf(js_include_file,"\n<!-- draw round rects -->\n\
  5192. 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){\
  5193. ctx.save();\
  5194. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5195. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5196. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5197. var x,y,w,h,r;\
  5198. for(var p = 0; p < x_points.length; p = p+2){\
  5199.  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);\
  5200.  ctx.beginPath();ctx.moveTo(x + r, y);\
  5201.  ctx.lineTo(x + w - r, y);\
  5202.  ctx.quadraticCurveTo(x + w, y, x + w, y + r);\
  5203.  ctx.lineTo(x + w, y + h - r);\
  5204.  ctx.quadraticCurveTo(x + w, y + h, x + w - r, y + h);\
  5205.  ctx.lineTo(x + r, y + h);\
  5206.  ctx.quadraticCurveTo(x, y + h, x, y + h - r);\
  5207.  ctx.lineTo(x, y + r);\
  5208.  ctx.quadraticCurveTo(x, y, x + r, y);\
  5209.  ctx.closePath();if( use_dashed == 1 ){ctx.setLineDash([dashtype0,dashtype1]);};\
  5210.  ctx.strokeStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5211.  if( use_filled == 1 ){ctx.fillStyle =\"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();};\
  5212.  ctx.stroke();\
  5213. }\
  5214. ctx.restore();\
  5215. };");
  5216.     break;
  5217.  
  5218.     case DRAW_ELLIPSES:/* not  used for userdraw */
  5219. fprintf(js_include_file,"\n<!-- draw ellipses -->\n\
  5220. 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){\
  5221. var obj;\
  5222. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5223.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5224. }\
  5225. else\
  5226. {\
  5227.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5228. };\
  5229. var ctx = obj.getContext(\"2d\");\
  5230. ctx.save();\
  5231. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5232. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5233. var cx,cy,ry,rx;\
  5234. ctx.lineWidth = line_width;\
  5235. if( use_filled == 1 ){ctx.fillStyle =\"rgba(\"+fill_color+\",\"+fill_opacity+\")\";};\
  5236. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5237. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5238. for(var p=0;p< x_points.length;p = p+2){\
  5239.  ctx.beginPath();\
  5240.  cx = x_points[p];cy = y_points[p];rx = 0.25*x_points[p+1];ry = 0.25*y_points[p+1];\
  5241.  ctx.translate(cx - rx, cy - ry);\
  5242.  ctx.scale(rx, ry);\
  5243.  ctx.arc(1, 1, 1, 0, 2 * Math.PI, false);\
  5244.  if( use_filled == 1 ){ctx.fill();}\
  5245.  ctx.stroke();\
  5246. };\
  5247. ctx.restore();\
  5248. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5249.     break;
  5250.  
  5251.     case DRAW_PATHS: /*  used for userdraw */
  5252. fprintf(js_include_file,"\n<!-- draw paths -->\n\
  5253. 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){\
  5254. ctx.save();\
  5255. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5256. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5257. ctx.lineWidth = line_width;\
  5258. ctx.lineJoin = \"round\";\
  5259. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5260. ctx.beginPath();\
  5261. ctx.moveTo(x_points[0],y_points[0]);\
  5262. for(var p = 1 ; p < x_points.length ; p++ ){ctx.lineTo(x_points[p],y_points[p]);}\
  5263. if(closed_path == 1){ctx.lineTo(x_points[0],y_points[0]);ctx.closePath();}\
  5264. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5265. if(use_filled == 1){ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();}\
  5266. ctx.stroke();\
  5267. ctx.restore();\
  5268. return;\
  5269. };");
  5270.  
  5271.     break;
  5272.     case DRAW_ARROWS:/*  used for userdraw */
  5273. fprintf(js_include_file,"\n<!-- draw arrows -->\n\
  5274. 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){\
  5275. ctx.save();\
  5276. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5277. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5278. ctx.strokeStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5279. ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5280. ctx.lineWidth = line_width;\
  5281. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5282. ctx.lineCap = \"round\";\
  5283. var x1,y1,x2,y2,dx,dy,len;\
  5284. for(var p = 0 ; p < x_points.length - 1 ; p = p +2){\
  5285.   ctx.save();\
  5286.   x1 = x_points[p];y1 = y_points[p];x2 = x_points[p+1];y2 = y_points[p+1];dx = x2 - x1;dy = y2 - y1;\
  5287.   len = Math.sqrt(dx*dx+dy*dy);\
  5288.   ctx.translate(x2,y2);\
  5289.   ctx.rotate(Math.atan2(dy,dx));\
  5290.   ctx.lineCap = \"round\";\
  5291.   ctx.beginPath();\
  5292.   ctx.moveTo(0,0);\
  5293.   ctx.lineTo(-len,0);\
  5294.   ctx.closePath();\
  5295.   ctx.stroke();\
  5296.   ctx.beginPath();\
  5297.   ctx.moveTo(0,0);\
  5298.   ctx.lineTo(-1*arrow_head,-0.5*arrow_head);\
  5299.   ctx.lineTo(-1*arrow_head, 0.5*arrow_head);\
  5300.   ctx.closePath();\
  5301.   ctx.fill();\
  5302.   ctx.restore();\
  5303.   if( type == 2 ){\
  5304.     ctx.save();\
  5305.     ctx.translate(x1,y1);\
  5306.     ctx.rotate(Math.atan2(-dy,-dx));\
  5307.     ctx.beginPath();\
  5308.     ctx.moveTo(0,0);\
  5309.     ctx.lineTo(-1*arrow_head,-0.5*arrow_head);\
  5310.     ctx.lineTo(-1*arrow_head, 0.5*arrow_head);\
  5311.     ctx.closePath();\
  5312.     ctx.stroke();\
  5313.     ctx.fill();\
  5314.     ctx.restore();\
  5315.   }\
  5316.  }\
  5317.  ctx.restore();\
  5318.  return;\
  5319. };");
  5320.     break;
  5321.  
  5322.     case DRAW_VIDEO:/* not  used for userdraw */
  5323. fprintf(js_include_file,"\n<!-- draw video -->\n\
  5324. var draw_video = function(canvas_root_id,x,y,w,h,URL){\
  5325. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  5326. var video_div = document.createElement(\"div\");\
  5327. canvas_div.appendChild(video_div);\
  5328. video_div.style.position = \"absolute\";\
  5329. video_div.style.left = x+\"px\";\
  5330. video_div.style.top = y+\"px\";\
  5331. video_div.style.width = w+\"px\";\
  5332. video_div.style.height = h+\"px\";\
  5333. var video = document.createElement(\"video\");\
  5334. video_div.appendChild(video);\
  5335. video.style.width = w+\"px\";\
  5336. video.style.height = h+\"px\";\
  5337. video.autobuffer = true;\
  5338. video.controls = true;video.autoplay = false;\
  5339. var src = document.createElement(\"source\");\
  5340. src.type = \"video/mp4\";\
  5341. src.src = URL;\
  5342. video.appendChild(src);\
  5343. video.load();\
  5344. return;\
  5345. };");
  5346.     break;
  5347.  
  5348.     case DRAW_AUDIO:/* not used for userdraw */
  5349. fprintf(js_include_file,"\n<!-- draw audio -->\n\
  5350. var draw_audio = function(canvas_root_id,x,y,w,h,loop,visible,URL1,URL2){\
  5351. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  5352. var audio_div = document.createElement(\"div\");\
  5353. canvas_div.appendChild(audio_div);\
  5354. audio_div.style.position = \"absolute\";\
  5355. audio_div.style.left = x+\"px\";\
  5356. audio_div.style.top = y+\"px\";\
  5357. audio_div.style.width = w+\"px\";\
  5358. audio_div.style.height = h+\"px\";\
  5359. var audio = document.createElement(\"audio\");\
  5360. audio_div.appendChild(audio);\
  5361. audio.setAttribute(\"style\",\"width:\"+w+\"px;height:\"+h+\"px\");\
  5362. audio.autobuffer = true;\
  5363. if(visible == 1 ){ audio.controls = true;audio.autoplay = false;}else{ audio.controls = false;audio.autoplay = true;}\
  5364. if(loop == 1 ){ audio.loop = true;}else{ audio.loop = false;}\
  5365. var src1 = document.createElement(\"source\");\
  5366. src1.type = \"audio/ogg\";\
  5367. src1.src = URL1;\
  5368. audio.appendChild(src1);\
  5369. var src2 = document.createElement(\"source\");\
  5370. src2.type = \"audio/mpeg\";\
  5371. src2.src = URL2;\
  5372. audio.appendChild(src2);\
  5373. audio.load();\
  5374. return;\
  5375. };");
  5376.     break;
  5377.  
  5378.     case DRAW_HTTP:/* not  used for userdraw */
  5379. fprintf(js_include_file,"\n<!-- draw http -->\n\
  5380. var draw_http = function(canvas_root_id,x,y,w,h,URL){\
  5381. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  5382. var http_div = document.createElement(\"div\");\
  5383. var iframe = document.createElement(\"iframe\");\
  5384. canvas_div.appendChild(http_div);\
  5385. http_div.appendChild(iframe);\
  5386. iframe.src = URL;\
  5387. iframe.setAttribute(\"width\",w);\
  5388. iframe.setAttribute(\"height\",h);\
  5389. return;\
  5390. };");
  5391.     break;
  5392.  
  5393.     case DRAW_XML:
  5394. fprintf(js_include_file,"\n<!-- draw xml -->\n\
  5395. var draw_xml = function(canvas_root_id,x,y,w,h,mathml,onclick){\
  5396. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  5397. var xml_div = document.createElement(\"div\");\
  5398. canvas_div.appendChild(xml_div);\
  5399. xml_div.innerHTML = mathml;\
  5400. if(onclick != 0){\
  5401.  xml_div.onclick = function(){\
  5402.   reply[0] = onclick;\
  5403.   alert(\"send \"+onclick+\" ?\");\
  5404.  };\
  5405. };\
  5406. xml_div.style.position = \"absolute\";\
  5407. xml_div.style.left = x+\"px\";\
  5408. xml_div.style.top = y+\"px\";\
  5409. xml_div.style.width = w+\"px\";\
  5410. xml_div.style.height = h+\"px\";\
  5411. return;\
  5412. };"
  5413. );
  5414.     break;
  5415.     case DRAW_SGRAPH:
  5416. /*
  5417.  xstart = given
  5418.  ystart = given
  5419.  sgraph(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily)
  5420. */
  5421. fprintf(js_include_file,"\n<!-- draw sgraph -->\n\
  5422. var draw_sgraph = function(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily,opacity,font_size){\
  5423. 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);};\
  5424. var ctx = obj.getContext(\"2d\");\
  5425. ctx.font = fontfamily;\
  5426. var minor_opacity = 0.8*opacity;\
  5427. ctx.clearRect(0,0,xsize,ysize);\
  5428. var zero_x = 0.1*xsize;\
  5429. var zero_y = 0.9*ysize;\
  5430. var snor_x;var snor_y;\
  5431. if( xstart != xmin){\
  5432.  snor_x = 0.1*xsize;\
  5433. }\
  5434. else\
  5435. {\
  5436.  snor_x = 0;\
  5437.  xstart = xmin;\
  5438. };\
  5439. ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  5440. ctx.lineWidth = 2;\
  5441. ctx.beginPath();\
  5442. ctx.moveTo(xsize,zero_y);\
  5443. ctx.lineTo(zero_x,zero_y);\
  5444. ctx.lineTo(zero_x,0);\
  5445. ctx.stroke();\
  5446. ctx.closePath();\
  5447. ctx.beginPath();\
  5448. ctx.moveTo(zero_x,zero_y);\
  5449. ctx.lineTo(zero_x + 0.25*snor_x,zero_y - 0.1*snor_x);\
  5450. ctx.lineTo(zero_x + 0.5*snor_x,zero_y + 0.1*snor_x);\
  5451. ctx.lineTo(zero_x + 0.75*snor_x,zero_y - 0.1*snor_x);\
  5452. ctx.lineTo(zero_x + snor_x,zero_y);\
  5453. ctx.stroke();\
  5454. ctx.closePath();\
  5455. ctx.beginPath();\
  5456. var num = xstart;\
  5457. var flipflop = 1;\
  5458. var step_x = xmajor*(xsize - zero_x - snor_x)/(xmax - xstart);\
  5459. var txtsize;var txt_marge=step_x - 5;\
  5460. for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  5461.  txtsize = ctx.measureText(num).width;\
  5462.  if( txtsize > txt_marge ){if( flipflop == 1 ){flipflop = 0;}else{flipflop = 1;};};\
  5463.  if( flipflop == 1){\
  5464.   ctx.fillText(num,x - 0.5*txtsize,zero_y+font_size);\
  5465.  }\
  5466.  else\
  5467.  {\
  5468.   ctx.fillText(num,x - 0.5*txtsize,zero_y+2*font_size);\
  5469.  }\
  5470.  num = num + xmajor;\
  5471. };\
  5472. ctx.stroke();\
  5473. ctx.closePath();\
  5474. ctx.lineWidth = 1;\
  5475. ctx.beginPath();\
  5476. for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  5477.   ctx.moveTo(x,zero_y);\
  5478.   ctx.lineTo(x,0);\
  5479. };\
  5480. ctx.stroke();\
  5481. ctx.closePath();\
  5482. if( xminor > 1){\
  5483.  ctx.lineWidth = 0.5;\
  5484.  ctx.beginPath();\
  5485.  ctx.strokeStyle = \"rgba(\"+minorcolor+\",\"+minor_opacity+\")\";\
  5486.  var minor_step_x = step_x / xminor;\
  5487.  var nx;\
  5488.  for(var x = zero_x+snor_x; x < xsize;x = x + step_x){\
  5489.    num = 1;\
  5490.    for(var p = 1 ; p < xminor ; p++){\
  5491.     nx = x + num*minor_step_x;\
  5492.     ctx.moveTo(nx,zero_y);\
  5493.     ctx.lineTo(nx,0);\
  5494.     num++;\
  5495.    };\
  5496.  };\
  5497.  ctx.stroke();\
  5498.  ctx.closePath();\
  5499.  ctx.beginPath();\
  5500.  ctx.lineWidth = 2;\
  5501.  ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  5502.  for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  5503.   ctx.moveTo(x,zero_y);ctx.lineTo(x,zero_y - 12);\
  5504.  };\
  5505.  for(var x = zero_x+snor_x ; x < xsize;x = x + minor_step_x){\
  5506.   ctx.moveTo(x,zero_y);ctx.lineTo(x,zero_y - 6);\
  5507.  };\
  5508.  ctx.stroke();\
  5509.  ctx.closePath();\
  5510.  ctx.lineWidth = 0.5;\
  5511. };\
  5512. xmin = xstart - (xmajor*(zero_x+snor_x)/step_x);\
  5513. if( ystart != ymin){\
  5514.  snor_y = 0.1*ysize;\
  5515. }\
  5516. else\
  5517. {\
  5518.  snor_y = 0;\
  5519.  ystart = ymin;\
  5520. };\
  5521. ctx.lineWidth = 2;\
  5522. ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  5523. ctx.beginPath();\
  5524. ctx.moveTo(zero_x,zero_y);\
  5525. ctx.lineTo(zero_x - 0.1*snor_y,zero_y - 0.25*snor_y);\
  5526. ctx.lineTo(zero_x + 0.1*snor_y,zero_y - 0.5*snor_y);\
  5527. ctx.lineTo(zero_x - 0.1*snor_y,zero_y - 0.75*snor_y);\
  5528. ctx.lineTo(zero_x,zero_y - snor_y);\
  5529. ctx.stroke();\
  5530. ctx.closePath();\
  5531. ctx.beginPath();\
  5532. ctx.lineWidth = 1;\
  5533. num = ystart;\
  5534. var step_y = ymajor*(zero_y - snor_y)/(ymax - ystart);\
  5535. for(var y = zero_y - snor_y ; y > 0; y = y - step_y){\
  5536.  ctx.moveTo(zero_x,y);\
  5537.  ctx.lineTo(xsize,y);\
  5538.  ctx.fillText(num,zero_x - ctx.measureText(num+\" \").width,parseInt(y+0.2*font_size));\
  5539.  num = num + ymajor;\
  5540. };\
  5541. ctx.stroke();\
  5542. ctx.closePath();\
  5543. if( yminor > 1){\
  5544.  ctx.lineWidth = 0.5;\
  5545.  ctx.beginPath();\
  5546.  ctx.strokeStyle = \"rgba(\"+minorcolor+\",\"+minor_opacity+\")\";\
  5547.  var minor_step_y = step_y / yminor;\
  5548.  var ny;\
  5549.  for(var y = 0 ; y < zero_y - snor_y ;y = y + step_y){\
  5550.   num = 1;\
  5551.   for(var p = 1 ;p < yminor;p++){\
  5552.     ny = y + num*minor_step_y;\
  5553.     ctx.moveTo(zero_x,ny);\
  5554.     ctx.lineTo(xsize,ny);\
  5555.     num++;\
  5556.    };\
  5557.  };\
  5558.  ctx.stroke();\
  5559.  ctx.closePath();\
  5560.  ctx.lineWidth = 2;\
  5561.  ctx.beginPath();\
  5562.  ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  5563.  for(var y = zero_y - snor_y ; y > 0 ;y = y - step_y){\
  5564.   ctx.moveTo(zero_x,y);\
  5565.   ctx.lineTo(zero_x+12,y);\
  5566.  };\
  5567.  for(var y = zero_y - snor_y ; y > 0 ;y = y - minor_step_y){\
  5568.   ctx.moveTo(zero_x,y);\
  5569.   ctx.lineTo(zero_x+6,y);\
  5570.  };\
  5571.  ctx.stroke();\
  5572.  ctx.closePath();\
  5573. };\
  5574. ymin = ystart - (ymajor*(ysize - zero_y + snor_y)/step_y);\
  5575. if( typeof legend%d  !== 'undefined' ){\
  5576.  ctx.globalAlpha = 1.0;\
  5577.  var y_offset = 2*font_size;\
  5578.  var txt;var txt_size;\
  5579.  var x_offset = xsize - 2*font_size;\
  5580.  var l_length = legend%d.length;var barcolor = new Array();\
  5581.  if( typeof legendcolors%d !== 'undefined' ){\
  5582.   for(var p = 0 ; p < l_length ; p++){\
  5583.    barcolor[p] = legendcolors%d[p];\
  5584.   };\
  5585.  }else{\
  5586.   if( barcolor.length == 0 ){\
  5587.    for(var p = 0 ; p < l_length ; p++){\
  5588.     barcolor[p] = stroke_color;\
  5589.    };\
  5590.   };\
  5591.  };\
  5592.  for(var p = 0; p < l_length; p++){\
  5593.   ctx.fillStyle = barcolor[p];\
  5594.   txt = legend%d[p];\
  5595.   txt_size = ctx.measureText(txt).width;\
  5596.   ctx.fillText(legend%d[p],x_offset - txt_size, y_offset);\
  5597.   y_offset = parseInt(y_offset + 1.5*font_size);\
  5598.  };\
  5599. };\
  5600. if( typeof xaxislabel !== 'undefined' ){\
  5601.   ctx.fillStyle = \'#000000\';\
  5602.   var txt_size = ctx.measureText(xaxislabel).width + 4 ;\
  5603.   ctx.fillText(xaxislabel,xsize - txt_size, zero_y - 7);\
  5604. };\
  5605. if( typeof yaxislabel !== 'undefined'){\
  5606.   ctx.save();\
  5607.   ctx.fillStyle = \'#000000\';\
  5608.   var txt_size = ctx.measureText(yaxislabel).width;\
  5609.   ctx.translate(zero_x+8 + font_size,txt_size+font_size);\
  5610.   ctx.rotate(-0.5*Math.PI);\
  5611.   ctx.fillText(yaxislabel,0,0);\
  5612.   ctx.restore();\
  5613. };\
  5614. };\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);
  5615.     break;
  5616.  
  5617.     case DRAW_GRID:/* not used for userdraw */
  5618. fprintf(js_include_file,"\n<!-- draw grid -->\n\
  5619. 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){\
  5620. 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);};\
  5621. var ctx = obj.getContext(\"2d\");ctx.clearRect(0,0,xsize,ysize);\
  5622. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5623. ctx.save();\
  5624. if( use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);};\
  5625. if( use_rotate == 1 ){ctx.translate(x2px(0),y2px(0));ctx.rotate(angle*Math.PI/180);ctx.translate(-1*(x2px(0)),-1*(y2px(0)));};\
  5626. var stroke_color = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5627. ctx.fillStyle = \"rgba(\"+font_color+\",\"+1.0+\")\";\
  5628. var axis_color = \"rgba(\"+axis_color+\",\"+stroke_opacity+\")\";\
  5629. ctx.font = font_family;\
  5630. var barcolor = new Array();\
  5631. var xstep = xsize*xmajor/(xmax - xmin);\
  5632. var ystep = ysize*ymajor/(ymax - ymin);\
  5633. var x2step = xstep / xminor;\
  5634. var y2step = ystep / yminor;\
  5635. var zero_x = x2px(0);;var zero_y = y2px(0);var f_x;var f_y;\
  5636. if(xmin < 0 ){ f_x = -1;}else{ f_x = 1;}\
  5637. if(ymin < 0 ){ f_y = -1;}else{ f_y = 1;}\
  5638. ctx.beginPath();\
  5639. ctx.lineWidth = line_width;\
  5640. ctx.strokeStyle = stroke_color;\
  5641. for(var p = zero_x ; p < xsize; p = p + xstep){\
  5642. ctx.moveTo(p,0);\
  5643. ctx.lineTo(p,ysize);\
  5644. };\
  5645. for(var p = zero_x ; p > 0; p = p - xstep){\
  5646. ctx.moveTo(p,0);\
  5647. ctx.lineTo(p,ysize);\
  5648. };\
  5649. for(var p = zero_y ; p < ysize; p = p + ystep){\
  5650. ctx.moveTo(0,p);\
  5651. ctx.lineTo(xsize,p);\
  5652. };\
  5653. for(var p = zero_y ; p > 0; p = p - ystep){\
  5654. ctx.moveTo(0,p);\
  5655. ctx.lineTo(xsize,p);\
  5656. };\
  5657. if( typeof xaxislabel !== 'undefined' ){\
  5658. ctx.save();\
  5659. ctx.font = \"italic \"+font_size+\"px Ariel\";\
  5660. var corr =  ctx.measureText(xaxislabel).width;\
  5661. ctx.fillText(xaxislabel,xsize - 1.5*corr,zero_y - tics_length - 0.4*font_size);\
  5662. ctx.restore();\
  5663. };\
  5664. if( typeof yaxislabel !== 'undefined' ){\
  5665. ctx.save();\
  5666. ctx.font = \"italic \"+font_size+\"px Ariel\";\
  5667. var corr =  ctx.measureText(yaxislabel).width;\
  5668. ctx.translate(zero_x+tics_length + font_size,corr+font_size);\
  5669. ctx.rotate(-0.5*Math.PI);\
  5670. ctx.fillText(yaxislabel,0,0);\
  5671. ctx.restore();\
  5672. };\
  5673. ctx.stroke();\
  5674. ctx.closePath();\
  5675. if( use_axis == 1 ){\
  5676. ctx.save();\
  5677. ctx.beginPath();\
  5678. ctx.strokeStyle = stroke_color;\
  5679. ctx.lineWidth = 0.6*line_width;\
  5680. for(var p = zero_x ; p < xsize; p = p + x2step){\
  5681.  ctx.moveTo(p,0);\
  5682.  ctx.lineTo(p,ysize);\
  5683. };\
  5684. for(var p = zero_x ; p > 0; p = p - x2step){\
  5685.  ctx.moveTo(p,0);\
  5686.  ctx.lineTo(p,ysize);\
  5687. };\
  5688. for(var p = zero_y ; p < ysize; p = p + y2step){\
  5689.  ctx.moveTo(0,p);\
  5690.  ctx.lineTo(xsize,p);\
  5691. };\
  5692. for(var p = zero_y ; p > 0; p = p - y2step){\
  5693.  ctx.moveTo(0,p);\
  5694.  ctx.lineTo(xsize,p);\
  5695. };\
  5696. ctx.stroke();\
  5697. ctx.closePath();\
  5698. ctx.beginPath();\
  5699. ctx.lineWidth = 2*line_width;\
  5700. ctx.strokeStyle = axis_color;\
  5701. ctx.moveTo(0,zero_y);\
  5702. ctx.lineTo(xsize,zero_y);\
  5703. ctx.moveTo(zero_x,0);\
  5704. ctx.lineTo(zero_x,ysize);\
  5705. ctx.stroke();\
  5706. ctx.closePath();\
  5707. ctx.lineWidth = line_width+0.5;\
  5708. ctx.beginPath();\
  5709. for(var p = zero_x ; p < xsize; p = p + xstep){\
  5710.  ctx.moveTo(p,zero_y-tics_length);\
  5711.  ctx.lineTo(p,zero_y+tics_length);\
  5712. };\
  5713. for(var p = zero_x ; p > 0; p = p - xstep){\
  5714.  ctx.moveTo(p,zero_y-tics_length);\
  5715.  ctx.lineTo(p,zero_y+tics_length);\
  5716. };\
  5717. for(var p = zero_y ; p < ysize; p = p + ystep){\
  5718.  ctx.moveTo(zero_x-tics_length,p);\
  5719.  ctx.lineTo(zero_x+tics_length,p);\
  5720. };\
  5721. for(var p = zero_y ; p > 0; p = p - ystep){\
  5722.  ctx.moveTo(zero_x-tics_length,p);\
  5723.  ctx.lineTo(zero_x+tics_length,p);\
  5724. };\
  5725. for(var p = zero_x ; p < xsize; p = p + x2step){\
  5726.  ctx.moveTo(p,zero_y-0.5*tics_length);\
  5727.  ctx.lineTo(p,zero_y+0.5*tics_length);\
  5728. };\
  5729. for(var p = zero_x ; p > 0; p = p - x2step){\
  5730.  ctx.moveTo(p,zero_y-0.5*tics_length);\
  5731.  ctx.lineTo(p,zero_y+0.5*tics_length);\
  5732. };\
  5733. for(var p = zero_y ; p < ysize; p = p + y2step){\
  5734.  ctx.moveTo(zero_x-0.5*tics_length,p);\
  5735.  ctx.lineTo(zero_x+0.5*tics_length,p);\
  5736. };\
  5737. for(var p = zero_y ; p > 0; p = p - y2step){\
  5738.  ctx.moveTo(zero_x-0.5*tics_length,p);\
  5739.  ctx.lineTo(zero_x+0.5*tics_length,p);\
  5740. };\
  5741. ctx.stroke();\
  5742. ctx.closePath();\
  5743. ctx.restore();\
  5744. };\
  5745. if( use_axis_numbering == 1 ){\
  5746. ctx.save();\
  5747. ctx.fillColor = axis_color;\
  5748. ctx.strokeStyle = axis_color;\
  5749. ctx.lineWidth = 2*line_width;\
  5750. ctx.font = font_family;\
  5751. var shift = zero_y+2*font_size;var flip=0;var skip=0;var corr;var cnt;var disp_cnt;var prec;\
  5752. if( x_strings != null ){\
  5753.  var len = x_strings.length;if((len/2+0.5)%%2 == 0){ alert(\"xaxis number unpaired:  text missing ! \");return;};\
  5754.  ctx.beginPath();\
  5755.  for(var p = 0 ; p < len ; p = p+2){\
  5756.   var x_nums = x2px(eval(x_strings[p]));\
  5757.   var x_text = x_strings[p+1];\
  5758.   corr = ctx.measureText(x_text).width;\
  5759.   skip = 1.2*corr/xstep;\
  5760.   if( zero_y+2*font_size > ysize ){shift = ysize - 2*font_size;};\
  5761.   if( skip > 1 ){if(flip == 0 ){flip = 1; shift = shift + font_size;}else{flip = 0; shift = shift - font_size;}};\
  5762.   ctx.fillText(x_text,parseInt(x_nums-0.5*corr),shift);\
  5763.   ctx.moveTo(x_nums,zero_y - tics_length);\
  5764.   ctx.lineTo(x_nums,zero_y + tics_length);\
  5765.  };\
  5766.  ctx.closePath();\
  5767. }\
  5768. else\
  5769. {\
  5770.  skip = 1;cnt = px2x(zero_x);\
  5771.  prec = Math.log(precision)/(Math.log(10));\
  5772.  var y_basis;if(f_y == 1){ y_basis = ysize }else{ y_basis = zero_y + 1.4*font_size;};\
  5773.  for( var p = zero_x ; p < xsize ; p = p+xstep){\
  5774.   if(skip == 0 ){\
  5775.    disp_cnt = cnt.toFixed(prec);\
  5776.    corr = ctx.measureText(disp_cnt).width;\
  5777.    skip = parseInt(1.2*corr/xstep);\
  5778.    ctx.fillText(disp_cnt,p-0.5*corr,y_basis);\
  5779.   }\
  5780.   else\
  5781.   {\
  5782.    skip--;\
  5783.   };\
  5784.   cnt = cnt + xmajor;\
  5785.  };\
  5786.  cnt = px2x(zero_x);skip = 1;\
  5787.  for( var p = zero_x ; p > 0 ; p = p-xstep){\
  5788.   if(skip == 0 ){\
  5789.    disp_cnt = cnt.toFixed(prec);\
  5790.    corr = ctx.measureText(disp_cnt).width;\
  5791.    skip = parseInt(1.2*corr/xstep);\
  5792.    ctx.fillText(disp_cnt,p-0.5*corr,y_basis);\
  5793.   }\
  5794.   else\
  5795.   {\
  5796.    skip--;\
  5797.   };\
  5798.   cnt = cnt - xmajor;\
  5799.  };\
  5800. };\
  5801. if( y_strings != null ){\
  5802.  var len = y_strings.length;if((len/2+0.5)%%2 == 0){ alert(\"yaxis number unpaired:  text missing ! \");return;};\
  5803.  ctx.beginPath();\
  5804.  for(var p = 0 ; p < len ; p = p+2){\
  5805.   var y_nums = y2px(eval(y_strings[p]));\
  5806.   var y_text = y_strings[p+1];\
  5807.   corr = 2 + tics_length + ctx.measureText(y_text).width;\
  5808.   if( corr > zero_x){corr = parseInt(zero_x+2); }\
  5809.   ctx.fillText(y_text,zero_x - corr,y_nums + 0.5*font_size);\
  5810.   ctx.moveTo(zero_x - tics_length,y_nums);\
  5811.   ctx.lineTo(zero_x + tics_length,y_nums);\
  5812.  };\
  5813.  ctx.closePath();\
  5814. }\
  5815. else\
  5816. {\
  5817.  if(f_x == 1){ corr = 1.5*tics_length; }\
  5818.  cnt = px2y(zero_y);skip = 1;\
  5819.  for( var p = zero_y ; p < ysize ; p = p+ystep){\
  5820.   if(skip == 0 ){\
  5821.    skip = parseInt(1.4*font_size/ystep);\
  5822.    disp_cnt = cnt.toFixed(prec);\
  5823.    if(f_x == -1 ){ corr = parseInt(zero_x - (2 + tics_length + ctx.measureText(disp_cnt).width));};\
  5824.    ctx.fillText(disp_cnt,parseInt(corr),parseInt(p+(0.4*font_size)));\
  5825.   }\
  5826.   else\
  5827.   {\
  5828.    skip--;\
  5829.   };\
  5830.   cnt = cnt - ymajor;\
  5831.  };\
  5832.  corr = 0;cnt = px2y(zero_y);skip = 1;\
  5833.  if(f_x == 1){ corr = 1.5*tics_length; }\
  5834.  for( var p = zero_y ; p > 0 ; p = p-ystep){\
  5835.   if(skip == 0 ){\
  5836.    skip = parseInt(1.4*font_size/ystep);\
  5837.    disp_cnt = cnt.toFixed(prec);\
  5838.    if(f_x == -1 ){corr = parseInt(zero_x - (2 + tics_length + ctx.measureText(disp_cnt).width));};\
  5839.    ctx.fillText(disp_cnt,parseInt(corr),parseInt(p+(0.4*font_size)));\
  5840.   }\
  5841.   else\
  5842.   {\
  5843.    skip--;\
  5844.   };\
  5845.   cnt = cnt + ymajor;\
  5846.  };\
  5847. };\
  5848. ctx.stroke();\
  5849. ctx.restore();\
  5850. };\
  5851. if( typeof legend0  !== 'undefined' ){\
  5852. ctx.save();\
  5853. ctx.globalAlpha = 1.0;\
  5854. ctx.font = \"bold \"+font_size+\"px Ariel\";\
  5855. var y_offset = 2*font_size;\
  5856. var txt;var txt_size;\
  5857. var x_offset = xsize - 2*font_size;\
  5858. var l_length = legend0.length;\
  5859. if( typeof legendcolors0 !== 'undefined' ){\
  5860.  for(var p = 0 ; p < l_length ; p++){\
  5861.    barcolor[p] = legendcolors0[p];\
  5862.  };\
  5863. }\
  5864. else\
  5865. {\
  5866.  if( barcolor.length == 0 ){\
  5867.   for(var p = 0 ; p < l_length ; p++){\
  5868.    barcolor[p] = stroke_color;\
  5869.   };\
  5870.  };\
  5871. };\
  5872. for(var p = 0; p < l_length; p++){\
  5873.  ctx.fillStyle = barcolor[p];\
  5874.  txt = legend0[p];\
  5875.  txt_size = ctx.measureText(txt).width;\
  5876.  ctx.fillText(legend0[p],x_offset - txt_size, y_offset);\
  5877.  y_offset = parseInt(y_offset + 1.5*font_size);\
  5878. };\
  5879. ctx.restore();\
  5880. };\
  5881. if( typeof barchart_0  !== 'undefined' ){\
  5882. ctx.save();\
  5883. var num_barcharts = 0;\
  5884. var bar_name = eval('barchart_0');\
  5885. while( typeof bar_name !== 'undefined' ){\
  5886.    try{ bar_name = eval('barchart_'+num_barcharts);num_barcharts++;}catch(e){break;};\
  5887. };\
  5888. var bar_width = parseInt(0.8*xstep/(num_barcharts));\
  5889. for(var i=0 ; i< num_barcharts ; i++){\
  5890.  bar_name = eval('barchart_'+i);\
  5891.  var bar_x = new Array();\
  5892.  var bar_y = new Array();\
  5893.  var lb = bar_name.length;\
  5894.  var idx = 0;\
  5895.  var dx = parseInt(0.5*i*bar_width);\
  5896.  for( var p = 0 ; p < lb ; p = p + 3 ){\
  5897.   bar_x[idx] = x2px(bar_name[p]);\
  5898.   bar_y[idx] = y2px(bar_name[p+1]);\
  5899.   barcolor[idx] = bar_name[p+2];\
  5900.   idx++;\
  5901.  };\
  5902.  ctx.globalAlpha = fill_opacity;\
  5903.  ctx.beginPath();\
  5904.  for( var p = 0; p < idx ; p++ ){\
  5905.   ctx.strokeStyle = barcolor[p];\
  5906.   ctx.fillStyle = barcolor[p];\
  5907.   ctx.rect(bar_x[p]-0.4*xstep+dx,bar_y[p],bar_width,zero_y - bar_y[p]);\
  5908.  };\
  5909.  ctx.fill();\
  5910.  ctx.stroke();\
  5911.  ctx.closePath();\
  5912. };\
  5913. ctx.restore();\
  5914. };\
  5915. if( typeof linegraph_0 !== 'undefined' ){\
  5916. ctx.save();\
  5917. ctx.globalAlpha = 1.0;\
  5918. var i = 0;\
  5919. var line_name = eval('linegraph_'+i);\
  5920. while ( typeof line_name !== 'undefined' ){\
  5921.  ctx.strokeStyle = 'rgba('+line_name[0]+','+stroke_opacity+')';\
  5922.  ctx.lineWidth = parseInt(line_name[1]);\
  5923.  if(line_name[2] == \"1\"){\
  5924.   var d1 = parseInt(line_name[3]);\
  5925.   var d2 = parseInt(line_name[4]);\
  5926.   if(ctx.setLineDash){ ctx.setLineDash([d1,d2]); } else { ctx.mozDash = [d1,d2];};\
  5927.  }\
  5928.  else\
  5929.  {\
  5930.  if(ctx.setLineDash){ctx.setLineDash = null;}\
  5931.  if(ctx.mozDash){ctx.mozDash = null;}\
  5932.  };\
  5933.  var data_x = new Array();\
  5934.  var data_y = new Array();\
  5935.  var lb = line_name.length;\
  5936.  var idx = 0;\
  5937.  for( var p = 5 ; p < lb ; p = p + 2 ){\
  5938.   data_x[idx] = x2px(line_name[p]);\
  5939.   data_y[idx] = y2px(line_name[p+1]);\
  5940.   idx++;\
  5941.  };\
  5942.  for( var p = 0; p < idx ; p++){\
  5943.   ctx.beginPath();\
  5944.   ctx.moveTo(data_x[p],data_y[p]);\
  5945.   ctx.lineTo(data_x[p+1],data_y[p+1]);\
  5946.   ctx.stroke();\
  5947.   ctx.closePath();\
  5948.  };\
  5949.  i++;\
  5950.  try{ line_name = eval('linegraph_'+i); }catch(e){ break; }\
  5951. };\
  5952. ctx.restore();\
  5953. };\
  5954. return;\
  5955. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  5956.     break;
  5957.  
  5958.     case DRAW_PIECHART:
  5959. fprintf(js_include_file,"\n<!-- draw piecharts -->\n\
  5960. function draw_piechart(canvas_type,x_center,y_center,radius, data_color_list,fill_opacity,legend_cnt,font_family){\
  5961. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5962.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5963. }\
  5964. else\
  5965. {\
  5966.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5967. };\
  5968. var ld = data_color_list.length;\
  5969. var sum = 0;\
  5970. var idx = 0;\
  5971. var font_size = parseInt(font_family.replace(/[^0-9\\.]+/g, \"\"));\
  5972. var colors = new Array();\
  5973. var data = new Array();\
  5974. for(var p = 0;p < ld; p = p + 2){\
  5975.  data[idx] = parseFloat(data_color_list[p]);\
  5976.  sum = sum + data[idx];\
  5977.  colors[idx] = data_color_list[p+1];\
  5978.  idx++;\
  5979. };\
  5980. var ctx = obj.getContext(\"2d\");\
  5981. ctx.save();\
  5982. var angle;\
  5983. var angle_end = 0;\
  5984. var offset = Math.PI / 2;\
  5985. ctx.globalAlpha = fill_opacity;\
  5986. for(var p=0; p < idx; p++){\
  5987.  ctx.beginPath();\
  5988.  ctx.fillStyle = colors[p];\
  5989.  ctx.moveTo(x_center,y_center);\
  5990.  angle = Math.PI * (2 * data[p] / sum);\
  5991.  ctx.arc(x_center,y_center, radius, angle_end - offset, angle_end + angle - offset, false);\
  5992.  ctx.lineTo(x_center, y_center);\
  5993.  ctx.fill();\
  5994.  ctx.closePath();\
  5995.  angle_end  = angle_end + angle;\
  5996. };\
  5997. if(typeof legend0 !== 'undefined'){\
  5998.  var legenda = eval(\"legend\"+legend_cnt);\
  5999.  ctx.globalAlpha = 1.0;\
  6000.  ctx.font = font_family;\
  6001.  var y_offset = font_size; \
  6002.  var x_offset = 0;\
  6003.  var txt;var txt_size;\
  6004.  for(var p = 0; p < idx; p++){\
  6005.   ctx.fillStyle = colors[p];\
  6006.   txt = legenda[p];\
  6007.   txt_size = ctx.measureText(txt).width;\
  6008.   if( x_center + radius + txt_size > xsize ){ x_offset =  x_center + radius + txt_size - xsize;} else { x_offset = 0; };\
  6009.   ctx.fillText(txt,x_center + radius - x_offset, y_center - radius + y_offset);\
  6010.   y_offset = parseInt(y_offset + 1.5*font_size);\
  6011.  };\
  6012. };\
  6013. ctx.restore();\
  6014. };",canvas_root_id,canvas_root_id,canvas_root_id);
  6015.  
  6016.     break;
  6017.     case DRAW_ARCS:
  6018. fprintf(js_include_file,"\n<!-- draw arcs -->\n\
  6019. 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){\
  6020. ctx.save();\
  6021. if( use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{if(ctx.mozDash){ ctx.mozDash = [dashtype0,dashtype1];};};};\
  6022. if( use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);};\
  6023. if( use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);};\
  6024. if(end < start){var tmp = end;end = start;start=tmp;};\
  6025. start = 360 - start;\
  6026. end = 360 - end;\
  6027. ctx.lineWidth = line_width;\
  6028. ctx.strokeStyle =  \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6029. ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";\
  6030. ctx.beginPath();\
  6031. ctx.moveTo(xc,yc);\
  6032. ctx.arc(xc, yc, r, start*(Math.PI / 180), end*(Math.PI / 180),true);\
  6033. ctx.lineTo(xc,yc);\
  6034. ctx.closePath();\
  6035. if( use_filled == 1 ){\
  6036.  ctx.fill();\
  6037. };\
  6038. ctx.stroke();\
  6039. ctx.restore();\
  6040. };");
  6041.  
  6042.     break;
  6043.     case DRAW_CENTERSTRING:
  6044. fprintf(js_include_file,"\n<!-- draw centerstring -->\n\
  6045. var draw_centerstring = function(canvas_type,y,font_family,stroke_color,stroke_opacity,text){\
  6046. var obj;\
  6047. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6048.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6049. }\
  6050. else\
  6051. {\
  6052.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6053. };\
  6054. var ctx = obj.getContext(\"2d\");\
  6055. ctx.save();\
  6056. ctx.font = font_family;\
  6057. ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6058. var stringwidth = ctx.measureText(text).width;\
  6059. var x = parseInt((xsize - stringwidth)/2);if( x < 0 ){x = 0;};\
  6060. ctx.fillText(text,x,y2px(y));\
  6061. return;\
  6062. };",canvas_root_id,canvas_root_id,canvas_root_id);
  6063.     break;
  6064.     case DRAW_TEXTS:
  6065. fprintf(js_include_file,"\n<!-- draw text -->\n\
  6066. 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){\
  6067.  var obj;\
  6068.  if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6069.   obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6070.  }\
  6071.  else\
  6072.  {\
  6073.   obj = create_canvas%d(canvas_type,xsize,ysize);\
  6074.  };\
  6075.  var ctx = obj.getContext(\"2d\");\
  6076.  if(angle2 == 0 && angle != 0){\
  6077.   ctx.save();\
  6078.   if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  6079.   if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  6080.  };\
  6081.  if( font_family.indexOf('px') != null ){\
  6082.   ctx.font = font_family;\
  6083.  }\
  6084.  else\
  6085.  {\
  6086.   ctx.font = font_family;\
  6087.  };\
  6088.  ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6089.  if(angle2 != 0){\
  6090.   ctx.save();\
  6091.   ctx.translate(x,y);\
  6092.   ctx.rotate((360-angle2)*(Math.PI / 180));\
  6093.   ctx.fillText(text,0,0);\
  6094.   ctx.restore();\
  6095.  }else{ctx.fillText(text,x,y);};\
  6096. ctx.restore();\
  6097. return;\
  6098. };",canvas_root_id,canvas_root_id,canvas_root_id);
  6099.     break;
  6100.     case DRAW_CURVE:
  6101. fprintf(js_include_file,"\n<!-- draw curve -->\n\
  6102. 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){\
  6103. var obj;\
  6104. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6105.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6106. }\
  6107. else\
  6108. {\
  6109.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6110. };\
  6111. var ctx = obj.getContext(\"2d\");\
  6112. ctx.save();\
  6113. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  6114. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  6115. ctx.beginPath();ctx.lineWidth = line_width;\
  6116. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  6117. ctx.strokeStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6118. ctx.moveTo(x2px(x_points[0]),y2px(y_points[0]));\
  6119. for(var p = 1 ; p < x_points.length ; p++){\
  6120.  if( y2px(y_points[p]) > -5 && y2px(y_points[p]) < ysize+5 ){\
  6121.  ctx.lineTo(x2px(x_points[p]),y2px(y_points[p]));\
  6122.  }\
  6123.  else\
  6124.  {\
  6125.   ctx.stroke();\
  6126.   ctx.beginPath();\
  6127.   p++;\
  6128.   ctx.moveTo(x2px(x_points[p]),y2px(y_points[p]));\
  6129.  };\
  6130. };\
  6131. ctx.stroke();\
  6132. ctx.restore();\
  6133. };",canvas_root_id,canvas_root_id,canvas_root_id);
  6134.     break;
  6135.  
  6136.     case DRAW_INPUTS:
  6137. fprintf(js_include_file,"\n<!-- draw input fields -->\n\
  6138. var draw_inputs = function(root_id,input_cnt,x,y,size,readonly,style,value){\
  6139. var canvas_div = document.getElementById(\"canvas_div\"+root_id);\
  6140. var input = document.createElement(\"input\");\
  6141. input.setAttribute(\"id\",\"canvas_input\"+input_cnt);\
  6142. input.setAttribute(\"style\",\"position:absolute;left:\"+x+\"px;top:\"+y+\"px;\"+style);\
  6143. input.setAttribute(\"size\",size);\
  6144. input.setAttribute(\"value\",value);\
  6145. if( readonly == 0 || wims_status == \"done\" ){ input.setAttribute(\"readonly\",\"readonly\");if( wims_status == \"done\" ){input.setAttribute(\"value\",\"\");};};\
  6146. canvas_div.appendChild(input);};");
  6147.     break;
  6148.  
  6149.     case DRAW_TEXTAREAS:
  6150. fprintf(js_include_file,"\n<!-- draw text area inputfields -->\n\
  6151. var draw_textareas = function(root_id,input_cnt,x,y,cols,rows,readonly,style,value){\
  6152. var canvas_div = document.getElementById(\"canvas_div\"+root_id);\
  6153. var textarea = document.createElement(\"textarea\");\
  6154. textarea.setAttribute(\"id\",\"canvas_input\"+input_cnt);\
  6155. textarea.setAttribute(\"style\",\"position:absolute;left:\"+x+\"px;top:\"+y+\"px;\"+style);\
  6156. textarea.setAttribute(\"cols\",cols);\
  6157. textarea.setAttribute(\"rows\",rows);\
  6158. textarea.value = value;\
  6159. if( readonly == 0 || wims_status == \"done\" ){ textarea.setAttribute(\"readonly\",\"readonly\");if( wims_status == \"done\" ){textarea.value=\"\";};};\
  6160. canvas_div.appendChild(textarea);};");
  6161.     break;
  6162.  
  6163. case DRAW_PIXELS:
  6164. fprintf(js_include_file,"\n<!-- draw pixel -->\n\
  6165. var draw_setpixel = function(x,y,color,opacity,pixelsize){\
  6166. var canvas = create_canvas%d(10,xsize,ysize);\
  6167. var d = 0.5*pixelsize;\
  6168. var ctx = canvas.getContext(\"2d\");\
  6169. ctx.fillStyle = \"rgba(\"+color+\",\"+opacity+\")\";\
  6170. ctx.clearRect(0,0,xsize,ysize);\
  6171. for(var p=0; p<x.length;p++){\
  6172.  ctx.fillRect( x2px(x[p]) - d, y2px(y[p]) - d , pixelsize, pixelsize );\
  6173. };\
  6174. ctx.fill();ctx.stroke();\
  6175. };",canvas_root_id);
  6176. break;
  6177.  
  6178. case DRAW_CLOCK:
  6179. fprintf(js_include_file,"\n<!-- begin command clock -->\n\
  6180. var clock_canvas = create_canvas%d(%d,xsize,ysize);\
  6181. var clock_ctx = clock_canvas.getContext(\"2d\");\
  6182. var clock = function(xc,yc,radius,H,M,S,type,interaction,h_color,m_color,s_color,bg_color,fg_color){\
  6183. clock_ctx.clearRect(xc - radius,yc - radius,2*radius,2*radius);\
  6184. clock_ctx.save();\
  6185. clock_ctx.globalAlpha = clock_bg_opacity;\
  6186. this.type = type || 0;\
  6187. this.interaction = interaction || 0;\
  6188. this.H = H;\
  6189. this.M = M;\
  6190. this.S = S;\
  6191. if(this.S == -1){this.S = 59;this.M = this.M - 1;};\
  6192. if(this.M == -1){this.M = 59;this.H = this.H - 1;};\
  6193. if(this.H == -1){this.H = 11;};\
  6194. this.xc = xc || xsize/2;\
  6195. this.yc = yc || ysize/2;\
  6196. this.radius = radius || xsize/4;\
  6197. var font_size = parseInt(0.2*this.radius);\
  6198. this.H_color = h_color || \"blue\";\
  6199. this.M_color = m_color || \"blue\";\
  6200. this.S_color = s_color || \"blue\";\
  6201. this.fg_color = fg_color || \"red\";\
  6202. this.bg_color = bg_color || \"white\";\
  6203. clock_ctx.translate(this.xc,this.yc);\
  6204. clock_ctx.beginPath();\
  6205. clock_ctx.arc(0,0,this.radius,0,2*Math.PI,false);\
  6206. clock_ctx.fillStyle = this.bg_color;\
  6207. clock_ctx.fill();\
  6208. clock_ctx.closePath();\
  6209. clock_ctx.beginPath();\
  6210. clock_ctx.font = font_size+\"px Arial\";\
  6211. clock_ctx.fillStyle = this.fg_color;\
  6212. clock_ctx.textAlign = \"center\";\
  6213. clock_ctx.textBaseline = 'middle';\
  6214. var angle;var x1,y1,x2,y2;\
  6215. var angle_cos;var angle_sin;\
  6216. clock_ctx.globalAlpha = clock_fg_opacity;\
  6217. switch(type){\
  6218. case 0:clock_ctx.beginPath();\
  6219. for(var p = 1; p <= 12 ; p++){\
  6220.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 12));\
  6221.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 12));\
  6222.  x1 = 0.8*angle_cos;y1 = 0.8*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  6223.  clock_ctx.moveTo(x1,y1);\
  6224.  clock_ctx.lineTo(x2,y2);\
  6225. };\
  6226. for(var p = 1; p <= 60 ; p++){\
  6227.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 60));\
  6228.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 60));\
  6229.  x1 = 0.9*angle_cos;y1 = 0.9*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  6230.  clock_ctx.moveTo(x1,y1);\
  6231.  clock_ctx.lineTo(x2,y2);\
  6232. };\
  6233. clock_ctx.closePath();\
  6234. clock_ctx.stroke();\
  6235. break;\
  6236. case 1:\
  6237. 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;\
  6238. case 2:\
  6239. 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);};\
  6240. clock_ctx.beginPath();\
  6241. for(var p = 1; p <= 12 ; p++){\
  6242.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 12));\
  6243.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 12));\
  6244.  x1 = 0.9*angle_cos;y1 = 0.9*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  6245.  clock_ctx.moveTo(x1,y1);\
  6246.  clock_ctx.lineTo(x2,y2);\
  6247. };\
  6248. for(var p = 1; p <= 60 ; p++){\
  6249.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 60));\
  6250.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 60));\
  6251.  x1 = 0.95*angle_cos;y1 = 0.95*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  6252.  clock_ctx.moveTo(x1,y1);\
  6253.  clock_ctx.lineTo(x2,y2);\
  6254. };\
  6255. clock_ctx.closePath();\
  6256. clock_ctx.stroke();\
  6257. break;\
  6258. };\
  6259. angle = (this.H - 3 + this.M/60 ) * 2 * Math.PI / 12;\
  6260. clock_ctx.rotate(angle);\
  6261. clock_ctx.beginPath();\
  6262. clock_ctx.moveTo(-3, -2);\
  6263. clock_ctx.lineTo(-3, 2);\
  6264. clock_ctx.lineTo(this.radius * 0.7, 1);\
  6265. clock_ctx.lineTo(this.radius  * 0.7, -1);\
  6266. clock_ctx.fillStyle = this.H_color;\
  6267. clock_ctx.fill();\
  6268. clock_ctx.rotate(-angle);\
  6269. angle = (this.M - 15 + this.S/60) * 2 * Math.PI / 60;\
  6270. clock_ctx.rotate(angle);\
  6271. clock_ctx.beginPath();\
  6272. clock_ctx.moveTo(-3, -2);\
  6273. clock_ctx.lineTo(-3, 2);\
  6274. clock_ctx.lineTo(this.radius  * 0.8, 1);\
  6275. clock_ctx.lineTo(this.radius  * 0.8, -1);\
  6276. clock_ctx.fillStyle = this.M_color;\
  6277. clock_ctx.fill();\
  6278. clock_ctx.rotate(-angle);\
  6279. angle = (this.S - 15) * 2 * Math.PI / 60;\
  6280. clock_ctx.rotate(angle);\
  6281. clock_ctx.beginPath();\
  6282. clock_ctx.moveTo(0,0);\
  6283. clock_ctx.lineTo(this.radius  * 0.95, 0);\
  6284. clock_ctx.lineTo(this.radius  * 0.9, -1);\
  6285. clock_ctx.strokeStyle = this.S_color;\
  6286. clock_ctx.stroke();\
  6287. clock_ctx.restore();\
  6288. };",canvas_root_id,CLOCK_CANVAS);
  6289. break;
  6290.  
  6291. case DRAW_LATTICE:
  6292. fprintf(js_include_file,"\n<!-- draw lattice -->\n\
  6293. 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){\
  6294. var obj;\
  6295. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6296.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6297. }\
  6298. else\
  6299. {\
  6300.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6301. };\
  6302. var ctx = obj.getContext(\"2d\");\
  6303. ctx.save();\
  6304. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  6305. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  6306. ctx.fillStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6307. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6308. var radius = line_width;\
  6309. var x = 0;\
  6310. var y = 0;\
  6311. var x_step_px = xsize/(xmax-xmin);\
  6312. var y_step_px = ysize/(ymax-ymin);\
  6313. var xv1 = dx1*x_step_px;\
  6314. var yv1 = dy1*y_step_px;\
  6315. var xv2 = dx2*x_step_px;\
  6316. var yv2 = dy2*y_step_px;\
  6317. for(var p = 0; p < n1 ;p++){\
  6318.  x = p*xv1 + x0;\
  6319.  y = p*yv1 + y0;\
  6320.  for(var c = 0; c < n2 ; c++){\
  6321.   ctx.beginPath();\
  6322.   ctx.arc(x+c*xv2,y+c*yv2,radius,0,2*Math.PI,false);\
  6323.   ctx.fill();\
  6324.   ctx.stroke();\
  6325.   ctx.closePath();\
  6326.  };\
  6327. };\
  6328. ctx.restore();\
  6329. return;\
  6330. };",canvas_root_id,canvas_root_id,canvas_root_id);
  6331.     break;
  6332. case DRAW_XYLOGSCALE:
  6333. fprintf(js_include_file,"\n<!-- draw xylogscale -->\n\
  6334. 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){\
  6335. var obj;\
  6336. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6337.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6338. }\
  6339. else\
  6340. {\
  6341.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6342. };\
  6343. var ctx = obj.getContext(\"2d\");\
  6344. ctx.clearRect(0,0,xsize,ysize);\
  6345. ctx.save();\
  6346. var xmarge;var ymarge;var x_e;var y_e;var num;var corr;var xtxt;var ytxt;\
  6347. var x_min = Math.log(xmin)/Math.log(xlogbase);\
  6348. var x_max = Math.log(xmax)/Math.log(xlogbase);\
  6349. var y_min = Math.log(ymin)/Math.log(ylogbase);\
  6350. var y_max = Math.log(ymax)/Math.log(ylogbase);\
  6351. if(use_axis_numbering == 1){\
  6352.  ctx.font = font_family;\
  6353.  xmarge = ctx.measureText(ylogbase+'^'+y_max.toFixed(0)+' ').width;\
  6354.  ymarge = parseInt(1.5*font_size);\
  6355.  ctx.save();\
  6356.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\
  6357.  ctx.rect(0,0,xmarge,ysize);\
  6358.  ctx.rect(0,ysize-ymarge,xsize,ysize);\
  6359.  ctx.fill();\
  6360.  ctx.restore();\
  6361. }else{xmarge = 0;ymarge = 0;};\
  6362. if( typeof xaxislabel !== 'undefined' ){\
  6363.  ctx.save();\
  6364.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6365.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6366.  corr =  ctx.measureText(xaxislabel).width;\
  6367.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\
  6368.  ctx.restore();\
  6369. };\
  6370. if( typeof yaxislabel !== 'undefined' ){\
  6371.  ctx.save();\
  6372.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6373.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6374.  corr = ctx.measureText(yaxislabel).width;\
  6375.  ctx.translate(xmarge+font_size,corr+font_size);\
  6376.  ctx.rotate(-0.5*Math.PI);\
  6377.  ctx.fillText(yaxislabel,0,0);\
  6378.  ctx.restore();\
  6379. };\
  6380. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6381. ctx.lineWidth = line_width;\
  6382. for(var p = x_min; p <= x_max ; p++){\
  6383.  num = Math.pow(xlogbase,p);\
  6384.  for(var i = 1 ; i < xlogbase ; i++){\
  6385.   x_e = x2px(i*num);\
  6386.   if( i == 1 ){\
  6387.    ctx.lineWidth = line_width;\
  6388.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6389.    if( use_axis_numbering == 1 && p > x_min){\
  6390.      xtxt = xlogbase+'^'+p.toFixed(0);\
  6391.      corr = 0.5*(ctx.measureText(xtxt).width);\
  6392.      ctx.fillText(xtxt,x_e - corr,ysize - 4);\
  6393.    };\
  6394.   }else{\
  6395.    ctx.lineWidth = 0.2*line_width;\
  6396.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6397.   };\
  6398.   if( x_e >= xmarge ){\
  6399.    ctx.beginPath();\
  6400.    ctx.moveTo(x_e,0);\
  6401.    ctx.lineTo(x_e,ysize - ymarge);\
  6402.    ctx.stroke();\
  6403.    ctx.closePath();\
  6404.   };\
  6405.  };\
  6406. };\
  6407. for(var p = y_min; p <= y_max ; p++){\
  6408.  num = Math.pow(ylogbase,p);\
  6409.  for(var i = 1 ; i < ylogbase ; i++){\
  6410.   y_e = y2px(i*num);\
  6411.   if( i == 1 ){\
  6412.    ctx.lineWidth = line_width;\
  6413.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6414.    if( use_axis_numbering == 1 && p > y_min){\
  6415.     ctx.fillText(ylogbase+'^'+p.toFixed(0),0,y_e);\
  6416.    };\
  6417.   }else{\
  6418.    ctx.lineWidth = 0.2*line_width;\
  6419.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6420.   };\
  6421.   ctx.beginPath();\
  6422.   ctx.moveTo(xmarge,y_e);\
  6423.   ctx.lineTo(xsize,y_e);\
  6424.   ctx.stroke();\
  6425.   ctx.closePath();\
  6426.  };\
  6427. };\
  6428. ctx.restore();\
  6429. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  6430.     break;
  6431.  
  6432. case DRAW_XLOGSCALE:
  6433. fprintf(js_include_file,"\n<!-- draw xlogscale -->\n\
  6434. 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){\
  6435. var obj;\
  6436. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6437.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6438. }\
  6439. else\
  6440. {\
  6441.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6442. };\
  6443. var ctx = obj.getContext(\"2d\");\
  6444. ctx.clearRect(0,0,xsize,ysize);\
  6445. ctx.save();\
  6446. ctx.lineWidth = line_width;\
  6447. var prec = Math.log(precision)/Math.log(10);\
  6448. var x_min = Math.log(xmin)/Math.log(xlogbase);\
  6449. var x_max = Math.log(xmax)/Math.log(xlogbase);\
  6450. var y_min = 0;var y_max = ysize;var x_e;var corr;\
  6451. var xtxt;var ytxt;var num;var xmarge;var ymarge;\
  6452. if(use_axis_numbering == 1){\
  6453.  ctx.font = font_family;\
  6454.  xmarge = ctx.measureText(ymax.toFixed(prec)+' ').width;\
  6455.  ymarge = parseInt(1.5*font_size);\
  6456.  ctx.save();\
  6457.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\
  6458.  ctx.rect(0,0,xmarge,ysize);\
  6459.  ctx.rect(0,ysize-ymarge,xsize,ysize);\
  6460.  ctx.fill();\
  6461.  ctx.restore();\
  6462. }else{xmarge = 0;ymarge = 0;};\
  6463. if( typeof xaxislabel !== 'undefined' ){\
  6464.  ctx.save();\
  6465.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6466.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6467.  corr =  ctx.measureText(xaxislabel).width;\
  6468.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\
  6469.  ctx.restore();\
  6470. };\
  6471. if( typeof yaxislabel !== 'undefined' ){\
  6472.  ctx.save();\
  6473.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6474.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6475.  corr = ctx.measureText(yaxislabel).width;\
  6476.  ctx.translate(xmarge+font_size,corr+font_size);\
  6477.  ctx.rotate(-0.5*Math.PI);\
  6478.  ctx.fillText(yaxislabel,0,0);\
  6479.  ctx.restore();\
  6480. };\
  6481. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6482. ctx.lineWidth = line_width;\
  6483. for(var p = x_min; p <= x_max ; p++){\
  6484.  num = Math.pow(xlogbase,p);\
  6485.  for(var i = 1 ; i < xlogbase ; i++){\
  6486.   x_e = x2px(i*num);\
  6487.   if( i == 1 ){\
  6488.     ctx.lineWidth = line_width;\
  6489.     ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6490.    if( use_axis_numbering == 1 && p > x_min ){\
  6491.      xtxt = xlogbase+'^'+p.toFixed(0);\
  6492.      corr = 0.5*(ctx.measureText(xtxt).width);\
  6493.      ctx.fillText(xtxt,x_e - corr,ysize - 4);\
  6494.    };\
  6495.   }else{\
  6496.    ctx.lineWidth = 0.2*line_width;\
  6497.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6498.   };\
  6499.   if( x_e >= xmarge ){\
  6500.    ctx.beginPath();\
  6501.    ctx.moveTo(x_e,0);\
  6502.    ctx.lineTo(x_e,ysize - ymarge);\
  6503.    ctx.stroke();\
  6504.    ctx.closePath();\
  6505.   };\
  6506.  };\
  6507. };\
  6508. var stepy = Math.abs(y2px(ymajor) - y2px(0));\
  6509. var minor_step = stepy / yminor;\
  6510. for(var y = 0 ; y < ysize - stepy ; y = y + stepy){\
  6511.  ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6512.  ctx.lineWidth = line_width;\
  6513.  ctx.beginPath();\
  6514.  ctx.moveTo(xmarge,y);\
  6515.  ctx.lineTo(xsize,y);\
  6516.  ctx.stroke();\
  6517.  ctx.closePath();\
  6518.  if( use_axis_numbering == 1){\
  6519.   ytxt = (px2y(y)).toFixed(prec);\
  6520.   ctx.fillText( ytxt,0 ,y + 0.5*font_size );\
  6521.  };\
  6522.  for(var dy = 1 ; dy < yminor ; dy++){\
  6523.   ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6524.   ctx.lineWidth = 0.2*line_width;\
  6525.   ctx.beginPath();\
  6526.   ctx.moveTo(xmarge,y+dy*minor_step);\
  6527.   ctx.lineTo(xsize,y+dy*minor_step);\
  6528.   ctx.stroke();\
  6529.   ctx.closePath();\
  6530.  };\
  6531. };\
  6532. ctx.restore();\
  6533. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  6534.     break;
  6535. case DRAW_YLOGSCALE:
  6536. fprintf(js_include_file,"\n<!-- draw ylogscale -->\n\
  6537. 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){\
  6538. var obj;\
  6539. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6540.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6541. }\
  6542. else\
  6543. {\
  6544.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6545. };\
  6546. var ctx = obj.getContext(\"2d\");\
  6547. ctx.clearRect(0,0,xsize,ysize);\
  6548. ctx.save();\
  6549. ctx.lineWidth = line_width;\
  6550. var y_min = Math.log(ymin)/Math.log(ylogbase);\
  6551. var y_max = Math.log(ymax)/Math.log(ylogbase);\
  6552. var x_min = 0;var x_max = xsize;var y_s;var y_e;var num;var xmarge;var ymarge;\
  6553. if(use_axis_numbering == 1){\
  6554.  ctx.font = font_family;\
  6555.  xmarge = ctx.measureText(ylogbase+\"^\"+y_max.toFixed(0)+' ').width;\
  6556.  ymarge = 2*font_size;\
  6557.  ctx.save();\
  6558.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\
  6559.  ctx.rect(0,0,xmarge,ysize);\
  6560.  ctx.rect(0,ysize-ymarge,xsize,ysize);\
  6561.  ctx.fill();\
  6562.  ctx.restore();\
  6563. }else{xmarge = 0;ymarge = 0;};\
  6564. if( typeof xaxislabel !== 'undefined' ){\
  6565.  ctx.save();\
  6566.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6567.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6568.  corr =  ctx.measureText(xaxislabel).width;\
  6569.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\
  6570.  ctx.restore();\
  6571. };\
  6572. if( typeof yaxislabel !== 'undefined' ){\
  6573.  ctx.save();\
  6574.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6575.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6576.  corr = ctx.measureText(yaxislabel).width;\
  6577.  ctx.translate(xmarge+font_size,corr+font_size);\
  6578.  ctx.rotate(-0.5*Math.PI);\
  6579.  ctx.fillText(yaxislabel,0,0);\
  6580.  ctx.restore();\
  6581. };\
  6582. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6583. ctx.lineWidth = line_width;\
  6584. for(var p = y_min; p <= y_max ; p++){\
  6585.  num = Math.pow(ylogbase,p);\
  6586.  for(var i = 1 ; i < ylogbase ; i++){\
  6587.   y_e = y2px(i*num);\
  6588.   if( i == 1 ){\
  6589.    ctx.lineWidth = line_width;\
  6590.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6591.    if( use_axis_numbering == 1 && p > y_min){\
  6592.     ctx.fillText(ylogbase+'^'+p.toFixed(0),0,y_e);\
  6593.    };\
  6594.   }else{\
  6595.    ctx.lineWidth = 0.2*line_width;\
  6596.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6597.   };\
  6598.   ctx.beginPath();\
  6599.   ctx.moveTo(xmarge,y_e);\
  6600.   ctx.lineTo(xsize,y_e);\
  6601.   ctx.stroke();\
  6602.   ctx.closePath();\
  6603.  };\
  6604. };\
  6605. var stepx = Math.abs(x2px(xmajor) - x2px(0));\
  6606. var minor_step = stepx / xminor;\
  6607. var prec = Math.log(precision)/Math.log(10);\
  6608. var xtxt;var corr;var flip = 0;\
  6609. for(var x = stepx ; x < xsize ; x = x + stepx){\
  6610.  ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6611.  ctx.lineWidth = line_width;\
  6612.  ctx.beginPath();\
  6613.  ctx.moveTo(x,ysize-ymarge);\
  6614.  ctx.lineTo(x,0);\
  6615.  ctx.stroke();\
  6616.  ctx.closePath();\
  6617.  if( use_axis_numbering == 1){\
  6618.   xtxt = (px2x(x)).toFixed(prec);\
  6619.   corr = 0.5*(ctx.measureText(xtxt).width);\
  6620.   if(flip == 0 ){flip = 1;ctx.fillText( xtxt,x - corr ,ysize - 0.2*font_size );}else{\
  6621.   flip = 0;ctx.fillText( xtxt,x - corr ,ysize - 1.2*font_size );};\
  6622.  };\
  6623.  for(var dx = 1 ; dx < xminor ; dx++){\
  6624.   ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6625.   ctx.lineWidth = 0.2*line_width;\
  6626.   ctx.beginPath();\
  6627.   ctx.moveTo(x+dx*minor_step,ysize - ymarge);\
  6628.   ctx.lineTo(x+dx*minor_step,0);\
  6629.   ctx.stroke();\
  6630.   ctx.closePath();\
  6631.  };\
  6632. };\
  6633. ctx.restore();\
  6634. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  6635.     break;
  6636.     default:break;
  6637.    }
  6638.   }
  6639.  }
  6640.   return;
  6641. }
  6642.  
  6643. void check_string_length(int L){
  6644.  if(L<1 || L > MAX_BUFFER-1){
  6645.   canvas_error("problem with your arguments to command...");
  6646.  }
  6647.  return;
  6648. }
  6649.  
  6650.  
  6651. int get_token(FILE *infile){
  6652.         int     c,i=0;
  6653.         char    temp[MAX_INT], *input_type;
  6654.         char    *line="line",
  6655.         *audio="audio",
  6656.         *blink="blink",
  6657.         *arrowhead="arrowhead",
  6658.         *crosshairsize="crosshairsize",
  6659.         *crosshair="crosshair",
  6660.         *crosshairs="crosshairs",
  6661.         *audioobject="audioobject",
  6662.         *style="style",
  6663.         *mouse="mouse",
  6664.         *mousex="mousex",
  6665.         *mousey="mousey",
  6666.         *mouse_display="display",
  6667.         *mouse_degree="mouse_degree",
  6668.         *userdraw="userdraw",
  6669.         *highlight="highlight",
  6670.         *http="http",
  6671.         *rays="rays",
  6672.         *dashtype="dashtype",
  6673.         *dashed="dashed",
  6674.         *filled="filled",
  6675.         *lattice="lattice",
  6676.         *parallel="parallel",
  6677.         *segment="segment",
  6678.         *dsegment="dsegment",
  6679.         *seg="seg",
  6680.         *bgimage="bgimage",
  6681.         *bgcolor="bgcolor",
  6682.         *strokecolor="strokecolor",
  6683.         *backgroundimage="backgroundimage",
  6684.         *text="text",
  6685.         *textup="textup",
  6686.         *mouseprecision="mouseprecision",
  6687.         *precision="precision",
  6688.         *plotsteps="plotsteps",
  6689.         *plotstep="plotstep",
  6690.         *tsteps="tsteps",
  6691.         *curve="curve",
  6692.         *dcurve="dcurve",
  6693.         *plot="plot",
  6694.         *dplot="dplot",
  6695.         *levelcurve="levelcurve",
  6696.         *fontsize="fontsize",
  6697.         *fontcolor="fontcolor",
  6698.         *axis="axis",
  6699.         *axisnumbering="axisnumbering",
  6700.         *axisnumbers="axisnumbers",
  6701.         *arrow="arrow",
  6702.         *darrow="darrow",
  6703.         *arrow2="arrow2",
  6704.         *darrow2="darrow2",
  6705.         *zoom="zoom",
  6706.         *grid="grid",
  6707.         *hline="hline",
  6708.         *dhline="dhline",
  6709.         *drag="drag",
  6710.         *horizontalline="horizontalline",
  6711.         *vline="vline",
  6712.         *dvline="dvline",
  6713.         *verticalline="verticalline",
  6714.         *triangle="triangle",
  6715.         *ftriangle="ftriangle",
  6716.         *mathml="mathml",
  6717.         *html="html",
  6718.         *input="input",
  6719.         *clearbutton="clearbutton",
  6720.         *inputstyle="inputstyle",
  6721.         *textarea="textarea",
  6722.         *trange="trange",
  6723.         *ranget="ranget",
  6724.         *xrange="xrange",
  6725.         *yrange="yrange",
  6726.         *rangex="rangex",
  6727.         *rangey="rangey",
  6728.         *polyline="polyline",
  6729.         *lines="lines",
  6730.         *poly="poly",
  6731.         *polygon="polygon",
  6732.         *fpolygon="fpolygon",
  6733.         *fpoly="fpoly",
  6734.         *filledpoly="filledpoly",
  6735.         *filledpolygon="filledpolygon",
  6736.         *rect="rect",
  6737.         *frect="frect",
  6738.         *rectangle="rectangle",
  6739.         *frectangle="frectangle",
  6740.         *square="square",
  6741.         *fsquare="fsquare",
  6742.         *dline="dline",
  6743.         *arc="arc",
  6744.         *filledarc="filledarc",
  6745.         *size="size",
  6746.         *string="string",
  6747.         *stringup="stringup",
  6748.         *copy="copy",
  6749.         *copyresized="copyresized",
  6750.         *opacity="opacity",
  6751.         *transparent="transparent",
  6752.         *fill="fill",
  6753.         *point="point",
  6754.         *points="points",
  6755.         *linewidth="linewidth",
  6756.         *circle="circle",
  6757.         *fcircle="fcircle",
  6758.         *disk="disk",
  6759.         *comment="#",
  6760.         *end="end",
  6761.         *ellipse="ellipse",
  6762.         *fellipse="fellipse",
  6763.         *rotate="rotate",
  6764.         *affine="affine",
  6765.         *killaffine="killaffine",
  6766.         *fontfamily="fontfamily",
  6767.         *fillcolor="fillcolor",
  6768.         *clicktile="clicktile",
  6769.         *clicktile_colors="clicktile_colors",
  6770.         *translation="translation",
  6771.         *translate="translate",
  6772.         *killtranslation="killtranslation",
  6773.         *killtranslate="killtranslate",
  6774.         *onclick="onclick",
  6775.         *roundrect="roundrect",
  6776.         *froundrect="froundrect",
  6777.         *roundrectangle="roundrectangle",
  6778.         *patternfill="patternfill",
  6779.         *hatchfill="hatchfill",
  6780.         *diafill="diafill",
  6781.         *diamondfill="diamondfill",
  6782.         *dotfill="dotfill",
  6783.         *gridfill="gridfill",
  6784.         *imagefill="imagefill",
  6785.         *xlogbase="xlogbase",
  6786.         *ylogbase="ylogbase",
  6787.         *xlogscale="xlogscale",
  6788.         *ylogscale="ylogscale",
  6789.         *xylogscale="xylogscale",
  6790.         *intooltip="intooltip",
  6791.         *replyformat="replyformat",
  6792.         *floodfill="floodfill",
  6793.         *filltoborder="filltoborder",
  6794.         *clickfill="clickfill",
  6795.         *setpixel="setpixel",
  6796.         *pixels="pixels",
  6797.         *pixelsize="pixelsize",
  6798.         *clickfillmarge="clickfillmarge",
  6799.         *xaxis="xaxis",
  6800.         *yaxis="yaxis",
  6801.         *xaxistext="xaxistext",
  6802.         *yaxistext="yaxistext",
  6803.         *piechart="piechart",
  6804.         *legend="legend",
  6805.         *legendcolors="legendcolors",
  6806.         *xlabel="xlabel",
  6807.         *ylabel="ylabel",
  6808.         *barchart="barchart",
  6809.         *linegraph="linegraph",
  6810.         *clock="clock",
  6811.         *animate="animate",
  6812.         *video="video",
  6813.         *status="status",
  6814.         *nostatus="nostatus",
  6815.         *snaptogrid="snaptogrid",
  6816.         *xsnaptogrid="xsnaptogrid",
  6817.         *ysnaptogrid="ysnaptogrid",
  6818.         *userinput_xy="userinput_xy",
  6819.         *userinput_function="userinput_function",
  6820.         *usertextarea_xy="usertextarea_xy",
  6821.         *userinput="userinput",
  6822.         *jsmath="jsmath",
  6823.         *trace_jscurve="trace_jscurve",
  6824.         *setlimits="setlimits",
  6825.         *jscurve="jscurve",
  6826.         *jsplot="jsplot",
  6827.         *sgraph="sgraph",
  6828.         *title="title",
  6829.         *centerstring="centerstring",
  6830.         *xunit="xunit",
  6831.         *yunit="yunit",
  6832.         *slider="slider",
  6833.         *killslider="killslider",
  6834.         *angle="angle",
  6835.         *halfline="halfline",
  6836.         *demiline="demiline";
  6837.  
  6838.         while(((c = getc(infile)) != EOF)&&(c!='\n')&&(c!=',')&&(c!='=')&&(c!='\r')){
  6839.             if( i == 0 && (c == ' ' || c == '\t') ){
  6840.         continue; /* white spaces or tabs allowed before first command identifier */
  6841.             }
  6842.             else
  6843.             {
  6844.         if( c == ' ' || c == '\t' ){
  6845.             break;
  6846.         }
  6847.         else
  6848.         {
  6849.             temp[i] = c;
  6850.             if(i > MAX_INT - 2){canvas_error("command string too long !");}
  6851.             i++;
  6852.         }
  6853.             }
  6854.             if(temp[0] == '#') break;
  6855.         }
  6856.         if (c == EOF) finished = 1;
  6857.  
  6858.         if (c == '\n' || c == '\r') {
  6859.         line_number++;
  6860.         if (i == 0) { return EMPTY; }
  6861.         } else if (c == EOF) {
  6862.         return 0;
  6863.         }
  6864.  
  6865.         temp[i]='\0';
  6866.         input_type=(char*)my_newmem(strlen(temp));
  6867.         snprintf(input_type,sizeof(temp),"%s",temp);
  6868.  
  6869.         if( strcmp(input_type, size) == 0 ){
  6870.         free(input_type);
  6871.         return SIZE;
  6872.         }
  6873.         if( strcmp(input_type, xrange) == 0 ){
  6874.         free(input_type);
  6875.         return XRANGE;
  6876.         }
  6877.         if( strcmp(input_type, rangex) == 0 ){
  6878.         free(input_type);
  6879.         return XRANGE;
  6880.         }
  6881.         if( strcmp(input_type, trange) == 0 ){
  6882.         free(input_type);
  6883.         return TRANGE;
  6884.         }
  6885.         if( strcmp(input_type, ranget) == 0 ){
  6886.         free(input_type);
  6887.         return TRANGE;
  6888.         }
  6889.         if( strcmp(input_type, yrange) == 0 ){
  6890.         free(input_type);
  6891.         return YRANGE;
  6892.         }
  6893.         if( strcmp(input_type, rangey) == 0 ){
  6894.         free(input_type);
  6895.         return YRANGE;
  6896.         }
  6897.         if( strcmp(input_type, linewidth) == 0 ){
  6898.         free(input_type);
  6899.         return LINEWIDTH;
  6900.         }
  6901.         if( strcmp(input_type, dashed) == 0 ){
  6902.         free(input_type);
  6903.         return DASHED;
  6904.         }
  6905.         if( strcmp(input_type, dashtype) == 0 ){
  6906.         free(input_type);
  6907.         return DASHTYPE;
  6908.         }
  6909.         if( strcmp(input_type, axisnumbering) == 0 ){
  6910.         free(input_type);
  6911.         return AXIS_NUMBERING;
  6912.         }
  6913.         if( strcmp(input_type, axisnumbers) == 0 ){
  6914.         free(input_type);
  6915.         return AXIS_NUMBERING;
  6916.         }
  6917.         if( strcmp(input_type, axis) == 0 ){
  6918.         free(input_type);
  6919.         return AXIS;
  6920.         }
  6921.         if( strcmp(input_type, grid) == 0 ){
  6922.         free(input_type);
  6923.         return GRID;
  6924.         }
  6925.         if( strcmp(input_type, parallel) == 0 ){
  6926.         free(input_type);
  6927.         return PARALLEL;
  6928.         }
  6929.         if( strcmp(input_type, hline) == 0 ||  strcmp(input_type, horizontalline) == 0 ){
  6930.         free(input_type);
  6931.         return HLINE;
  6932.         }
  6933.         if( strcmp(input_type, vline) == 0 ||  strcmp(input_type, verticalline) == 0 ){
  6934.         free(input_type);
  6935.         return VLINE;
  6936.         }
  6937.         if( strcmp(input_type, line) == 0 ){
  6938.         free(input_type);
  6939.         return LINE;
  6940.         }
  6941.         if( strcmp(input_type, seg) == 0 ||  strcmp(input_type, segment) == 0 ){
  6942.         free(input_type);
  6943.         return SEGMENT;
  6944.         }
  6945.         if( strcmp(input_type, dsegment) == 0 ){
  6946.         free(input_type);
  6947.         use_dashed = TRUE;
  6948.         return SEGMENT;
  6949.         }
  6950.         if( strcmp(input_type, crosshairsize) == 0 ){
  6951.         free(input_type);
  6952.         return CROSSHAIRSIZE;
  6953.         }
  6954.         if( strcmp(input_type, arrowhead) == 0 ){
  6955.         free(input_type);
  6956.         return ARROWHEAD;
  6957.         }
  6958.         if( strcmp(input_type, crosshairs) == 0 ){
  6959.         free(input_type);
  6960.         return CROSSHAIRS;
  6961.         }
  6962.         if( strcmp(input_type, crosshair) == 0 ){
  6963.         free(input_type);
  6964.         return CROSSHAIR;
  6965.         }
  6966.         if( strcmp(input_type, onclick) == 0 ){
  6967.         free(input_type);
  6968.         return ONCLICK;
  6969.         }
  6970.         if( strcmp(input_type, drag) == 0 ){
  6971.         free(input_type);
  6972.         return DRAG;
  6973.         }
  6974.         if( strcmp(input_type, userdraw) == 0 ){
  6975.         free(input_type);
  6976.         return USERDRAW;
  6977.         }
  6978.         if( strcmp(input_type, highlight) == 0 || strcmp(input_type, style) == 0 ){
  6979.         free(input_type);
  6980.         return STYLE;
  6981.         }
  6982.         if( strcmp(input_type, fillcolor) == 0 ){
  6983.         free(input_type);
  6984.         return FILLCOLOR;
  6985.         }
  6986.         if( strcmp(input_type, strokecolor) == 0 ){
  6987.         free(input_type);
  6988.         return STROKECOLOR;
  6989.         }
  6990.         if( strcmp(input_type, filled) == 0  ){
  6991.         free(input_type);
  6992.         return FILLED;
  6993.         }
  6994.         if( strcmp(input_type, http) == 0 ){
  6995.         free(input_type);
  6996.         return HTTP;
  6997.         }
  6998.         if( strcmp(input_type, rays) == 0 ){
  6999.         free(input_type);
  7000.         return RAYS;
  7001.         }
  7002.         if( strcmp(input_type, lattice) == 0 ){
  7003.         free(input_type);
  7004.         return LATTICE;
  7005.         }
  7006.         if( strcmp(input_type, bgimage) == 0 ){
  7007.         free(input_type);
  7008.         return BGIMAGE;
  7009.         }
  7010.         if( strcmp(input_type, bgcolor) == 0 ){
  7011.         free(input_type);
  7012.         return BGCOLOR;
  7013.         }
  7014.         if( strcmp(input_type, backgroundimage) == 0 ){
  7015.         free(input_type);
  7016.         return BGIMAGE;
  7017.         }
  7018.         if( strcmp(input_type, text) == 0 ){
  7019.         free(input_type);
  7020.         return FLY_TEXT;
  7021.         }
  7022.         if( strcmp(input_type, textup) == 0 ){
  7023.         free(input_type);
  7024.         return FLY_TEXTUP;
  7025.         }
  7026.         if( strcmp(input_type, mouse) == 0 ){
  7027.         free(input_type);
  7028.         return MOUSE;
  7029.         }
  7030.         if( strcmp(input_type, mousex) == 0 ){
  7031.         free(input_type);
  7032.         return MOUSEX;
  7033.         }
  7034.         if( strcmp(input_type, mousey) == 0 ){
  7035.         free(input_type);
  7036.         return MOUSEY;
  7037.         }
  7038.         if( strcmp(input_type, mouse_degree) == 0 ){
  7039.         free(input_type);
  7040.         return MOUSE_DEGREE;
  7041.         }
  7042.         if( strcmp(input_type, mouse_display) == 0 ){
  7043.         free(input_type);
  7044.         return MOUSE_DISPLAY;
  7045.         }
  7046.         if( strcmp(input_type, mouseprecision) == 0 ){
  7047.         free(input_type);
  7048.         return MOUSE_PRECISION;
  7049.         }
  7050.         if( strcmp(input_type, precision) == 0 ){
  7051.         free(input_type);
  7052.         return MOUSE_PRECISION;
  7053.         }
  7054.         if( strcmp(input_type, curve) == 0 ){
  7055.         free(input_type);
  7056.         return CURVE;
  7057.         }
  7058.         if( strcmp(input_type, dcurve) == 0 ){
  7059.         use_dashed = TRUE;
  7060.         free(input_type);
  7061.         return CURVE;
  7062.         }
  7063.         if( strcmp(input_type, plot) == 0 ){
  7064.         free(input_type);
  7065.         return CURVE;
  7066.         }
  7067.         if( strcmp(input_type, dplot) == 0 ){
  7068.         use_dashed = TRUE;
  7069.         free(input_type);
  7070.         return CURVE;
  7071.         }
  7072.         if( strcmp(input_type, levelcurve) == 0 ){
  7073.         free(input_type);
  7074.         return LEVELCURVE;
  7075.         }
  7076.         if( strcmp(input_type, plotsteps) == 0 ){
  7077.         free(input_type);
  7078.         return PLOTSTEPS;
  7079.         }
  7080.         if( strcmp(input_type, plotstep) == 0 ){
  7081.         free(input_type);
  7082.         return PLOTSTEPS;
  7083.         }
  7084.         if( strcmp(input_type, tsteps) == 0 ){
  7085.         free(input_type);
  7086.         return PLOTSTEPS;
  7087.         }
  7088.         if( strcmp(input_type, fontsize) == 0 ){
  7089.         free(input_type);
  7090.         return FONTSIZE;
  7091.         }
  7092.         if( strcmp(input_type, fontcolor) == 0 ){
  7093.         free(input_type);
  7094.         return FONTCOLOR;
  7095.         }
  7096.         if( strcmp(input_type, arrow) == 0 ){
  7097.         free(input_type);
  7098.         return ARROW;
  7099.         }
  7100.         if( strcmp(input_type, arrow2) == 0 ){
  7101.         free(input_type);
  7102.         return ARROW2;
  7103.         }
  7104.         if( strcmp(input_type, darrow) == 0 ){
  7105.         free(input_type);
  7106.         use_dashed = TRUE;
  7107.         return ARROW;
  7108.         }
  7109.         if( strcmp(input_type, darrow2) == 0 ){
  7110.         free(input_type);
  7111.         use_dashed = TRUE;
  7112.         return ARROW2;
  7113.         }
  7114.         if( strcmp(input_type, zoom) == 0 ){
  7115.         free(input_type);
  7116.         return ZOOM;
  7117.         }
  7118.         if( strcmp(input_type, triangle) == 0 ){
  7119.         free(input_type);
  7120.         return TRIANGLE;
  7121.         }
  7122.         if( strcmp(input_type, ftriangle) == 0 ){
  7123.         free(input_type);
  7124.         use_filled = TRUE;
  7125.         return TRIANGLE;
  7126.         }
  7127.         if( strcmp(input_type, input) == 0 ){
  7128.         free(input_type);
  7129.         return INPUT;
  7130.         }
  7131.         if( strcmp(input_type, inputstyle) == 0 ){
  7132.         free(input_type);
  7133.         return INPUTSTYLE;
  7134.         }
  7135.         if( strcmp(input_type, textarea) == 0 ){
  7136.         free(input_type);
  7137.         return TEXTAREA;
  7138.         }
  7139.         if( strcmp(input_type, mathml) == 0 ){
  7140.         free(input_type);
  7141.         return MATHML;
  7142.         }
  7143.         if( strcmp(input_type, html) == 0 ){
  7144.         free(input_type);
  7145.         return MATHML;
  7146.         }
  7147.         if( strcmp(input_type, fontfamily) == 0 ){
  7148.         free(input_type);
  7149.         return FONTFAMILY;
  7150.         }
  7151.         if( strcmp(input_type, lines) == 0  ||  strcmp(input_type, polyline) == 0 ){
  7152.         free(input_type);
  7153.         return POLYLINE;
  7154.         }
  7155.         if( strcmp(input_type, rect) == 0  ||  strcmp(input_type, rectangle) == 0 ){
  7156.         free(input_type);
  7157.         return RECT;
  7158.         }
  7159.         if( strcmp(input_type, roundrect) == 0  ||  strcmp(input_type, roundrectangle) == 0 ){
  7160.         free(input_type);
  7161.         return ROUNDRECT;
  7162.         }
  7163.         if( strcmp(input_type, froundrect) == 0 ){
  7164.         free(input_type);
  7165.         use_filled = TRUE;
  7166.         return ROUNDRECT;
  7167.         }
  7168.         if( strcmp(input_type, square) == 0 ){
  7169.         free(input_type);
  7170.         return SQUARE;
  7171.         }
  7172.         if( strcmp(input_type, fsquare) == 0 ){
  7173.         free(input_type);
  7174.         use_filled = TRUE;
  7175.         return SQUARE;
  7176.         }
  7177.         if( strcmp(input_type, dline) == 0 ){
  7178.         use_dashed = TRUE;
  7179.         free(input_type);
  7180.         return LINE;
  7181.         }
  7182.         if( strcmp(input_type, dvline) == 0 ){
  7183.         use_dashed = TRUE;
  7184.         free(input_type);
  7185.         return VLINE;
  7186.         }
  7187.         if( strcmp(input_type, dhline) == 0 ){
  7188.         use_dashed = TRUE;
  7189.         free(input_type);
  7190.         return HLINE;
  7191.         }
  7192.         if( strcmp(input_type, frect) == 0 || strcmp(input_type, frectangle) == 0 ){
  7193.         use_filled = TRUE;
  7194.         free(input_type);
  7195.         return RECT;
  7196.         }
  7197.         if( strcmp(input_type, fcircle) == 0  ||  strcmp(input_type, disk) == 0 ){
  7198.         use_filled = TRUE;
  7199.         free(input_type);
  7200.         return CIRCLE;
  7201.         }
  7202.         if( strcmp(input_type, circle) == 0 ){
  7203.         free(input_type);
  7204.         return CIRCLE;
  7205.         }
  7206.         if( strcmp(input_type, point) == 0 ){
  7207.         free(input_type);
  7208.         return POINT;
  7209.         }
  7210.         if( strcmp(input_type, points) == 0 ){
  7211.         free(input_type);
  7212.         return POINTS;
  7213.         }
  7214.         if( strcmp(input_type, filledarc) == 0 ){
  7215.         use_filled = TRUE;
  7216.         free(input_type);
  7217.         return ARC;
  7218.         }
  7219.         if( strcmp(input_type, arc) == 0 ){
  7220.         free(input_type);
  7221.         return ARC;
  7222.         }
  7223.         if( strcmp(input_type, poly) == 0 ||  strcmp(input_type, polygon) == 0 ){
  7224.         free(input_type);
  7225.         return POLY;
  7226.         }
  7227.         if( strcmp(input_type, fpoly) == 0 ||  strcmp(input_type, filledpoly) == 0 || strcmp(input_type,filledpolygon) == 0  || strcmp(input_type,fpolygon) == 0  ){
  7228.         use_filled = TRUE;
  7229.         free(input_type);
  7230.         return POLY;
  7231.         }
  7232.         if( strcmp(input_type, ellipse) == 0){
  7233.         free(input_type);
  7234.         return ELLIPSE;
  7235.         }
  7236.         if( strcmp(input_type, fill) == 0 ){
  7237.         free(input_type);
  7238.         return FLOODFILL;
  7239.         }
  7240.         if( strcmp(input_type, string) == 0 ){
  7241.         free(input_type);
  7242.         return STRING;
  7243.         }
  7244.         if( strcmp(input_type, stringup) == 0 ){
  7245.         free(input_type);
  7246.         return STRINGUP;
  7247.         }
  7248.         if( strcmp(input_type, opacity) == 0 ){
  7249.         free(input_type);
  7250.         return OPACITY;
  7251.         }
  7252.         if( strcmp(input_type, comment) == 0){
  7253.         free(input_type);
  7254.         return COMMENT;
  7255.         }
  7256.         if( strcmp(input_type, end) == 0){
  7257.         free(input_type);
  7258.         return END;
  7259.         }
  7260.         if( strcmp(input_type, fellipse) == 0){
  7261.         free(input_type);
  7262.         use_filled = TRUE;
  7263.         return ELLIPSE;
  7264.         }
  7265.         if( strcmp(input_type, blink) == 0 ){
  7266.         free(input_type);
  7267.         return BLINK;
  7268.         }
  7269.         if( strcmp(input_type, clearbutton) == 0){
  7270.         free(input_type);
  7271.         return CLEARBUTTON;
  7272.         }
  7273.         if( strcmp(input_type, translation) == 0 ||  strcmp(input_type, translate) == 0  ){
  7274.         free(input_type);
  7275.         return TRANSLATION;
  7276.         }
  7277.         if( strcmp(input_type, killtranslation) == 0 ||  strcmp(input_type, killtranslate) == 0){
  7278.         free(input_type);
  7279.         return KILLTRANSLATION;
  7280.         }
  7281.         if( strcmp(input_type, rotate) == 0){
  7282.         free(input_type);
  7283.         return ROTATE;
  7284.         }
  7285.         if( strcmp(input_type, affine) == 0){
  7286.         free(input_type);
  7287.         return AFFINE;
  7288.         }
  7289.         if( strcmp(input_type, killaffine) == 0){
  7290.         free(input_type);
  7291.         return KILLAFFINE;
  7292.         }
  7293.         if( strcmp(input_type, audio) == 0 ){
  7294.         free(input_type);
  7295.         return AUDIO;
  7296.         }
  7297.         if( strcmp(input_type, audioobject) == 0 ){
  7298.         free(input_type);
  7299.         return AUDIOOBJECT;
  7300.         }
  7301.         if( strcmp(input_type, slider) == 0 ){
  7302.         free(input_type);
  7303.         return SLIDER;
  7304.         }
  7305.         if( strcmp(input_type, killslider) == 0 ){
  7306.         free(input_type);
  7307.         return KILLSLIDER;
  7308.         }
  7309.         if( strcmp(input_type, copy) == 0 ){
  7310.         free(input_type);
  7311.         return COPY;
  7312.         }
  7313.         if( strcmp(input_type, copyresized) == 0 ){
  7314.         free(input_type);
  7315.         return COPYRESIZED;
  7316.         }
  7317.         if( strcmp(input_type, patternfill) == 0 ){
  7318.         free(input_type);
  7319.         return PATTERNFILL;
  7320.         }
  7321.         if( strcmp(input_type, hatchfill) == 0 ){
  7322.         free(input_type);
  7323.         return HATCHFILL;
  7324.         }
  7325.         if( strcmp(input_type, diafill) == 0  || strcmp(input_type, diamondfill) == 0  ){
  7326.         free(input_type);
  7327.         return DIAMONDFILL;
  7328.         }
  7329.         if( strcmp(input_type, dotfill) == 0 ){
  7330.         free(input_type);
  7331.         return DOTFILL;
  7332.         }
  7333.         if( strcmp(input_type, gridfill) == 0 ){
  7334.         free(input_type);
  7335.         return GRIDFILL;
  7336.         }
  7337.         if( strcmp(input_type, imagefill) == 0 ){
  7338.         free(input_type);
  7339.         return IMAGEFILL;
  7340.         }
  7341.         if( strcmp(input_type, clicktile_colors) == 0 ){
  7342.         free(input_type);
  7343.         return CLICKTILE_COLORS;
  7344.         }
  7345.         if( strcmp(input_type, clicktile) == 0 ){
  7346.         free(input_type);
  7347.         return CLICKTILE;
  7348.         }
  7349.         if( strcmp(input_type, xlogscale) == 0 ){
  7350.         free(input_type);
  7351.         return XLOGSCALE;
  7352.         }
  7353.         if( strcmp(input_type, ylogscale) == 0 ){
  7354.         free(input_type);
  7355.         return YLOGSCALE;
  7356.         }
  7357.         if( strcmp(input_type, xylogscale) == 0 ){
  7358.         free(input_type);
  7359.         return XYLOGSCALE;
  7360.         }
  7361.         if( strcmp(input_type, ylogscale) == 0 ){
  7362.         free(input_type);
  7363.         return YLOGSCALE;
  7364.         }
  7365.         if( strcmp(input_type, xlogbase) == 0 ){
  7366.         free(input_type);
  7367.         return XLOGBASE;
  7368.         }
  7369.         if( strcmp(input_type, ylogbase) == 0 ){
  7370.         free(input_type);
  7371.         return YLOGBASE;
  7372.         }
  7373.         if( strcmp(input_type, intooltip) == 0 ){
  7374.         free(input_type);
  7375.         return INTOOLTIP;
  7376.         }
  7377.         if( strcmp(input_type,video) == 0 ){
  7378.         free(input_type);
  7379.         return VIDEO;
  7380.         }
  7381.         if( strcmp(input_type,floodfill) == 0 || strcmp(input_type,fill) == 0 ){
  7382.         free(input_type);
  7383.         return FLOODFILL;
  7384.         }
  7385.         if( strcmp(input_type,filltoborder) == 0 ){
  7386.         free(input_type);
  7387.         return FILLTOBORDER;
  7388.         }
  7389.         if( strcmp(input_type,clickfill) == 0 ){
  7390.         free(input_type);
  7391.         return CLICKFILL;
  7392.         }
  7393.         if( strcmp(input_type, replyformat) == 0 ){
  7394.         free(input_type);
  7395.         return REPLYFORMAT;
  7396.         }
  7397.         if( strcmp(input_type, pixelsize) == 0 ){
  7398.         free(input_type);
  7399.         return PIXELSIZE;
  7400.         }
  7401.         if( strcmp(input_type, setpixel) == 0 ){
  7402.         free(input_type);
  7403.         return SETPIXEL;
  7404.         }
  7405.         if( strcmp(input_type, pixels) == 0 ){
  7406.         free(input_type);
  7407.         return PIXELS;
  7408.         }
  7409.         if( strcmp(input_type, clickfillmarge) == 0 ){
  7410.         free(input_type);
  7411.         return CLICKFILLMARGE;
  7412.         }
  7413.         if( strcmp(input_type, xaxis) == 0 || strcmp(input_type, xaxistext) == 0 ){
  7414.         free(input_type);
  7415.         return X_AXIS_STRINGS;
  7416.         }
  7417.         if( strcmp(input_type, yaxis) == 0  ||  strcmp(input_type, yaxistext) == 0 ){
  7418.         free(input_type);
  7419.         return Y_AXIS_STRINGS;
  7420.         }
  7421.         if( strcmp(input_type, piechart) == 0  ){
  7422.         free(input_type);
  7423.         return PIECHART;
  7424.         }
  7425.         if( strcmp(input_type, barchart) == 0  ){
  7426.         free(input_type);
  7427.         return BARCHART;
  7428.         }
  7429.         if( strcmp(input_type, linegraph) == 0  ){
  7430.         free(input_type);
  7431.         return LINEGRAPH;
  7432.         }
  7433.         if( strcmp(input_type, clock) == 0  ){
  7434.         free(input_type);
  7435.         return CLOCK;
  7436.         }
  7437.         if( strcmp(input_type, legend) == 0  ){
  7438.         free(input_type);
  7439.         return LEGEND;
  7440.         }
  7441.         if( strcmp(input_type, legendcolors) == 0  ){
  7442.         free(input_type);
  7443.         return LEGENDCOLORS;
  7444.         }
  7445.         if( strcmp(input_type, xlabel) == 0  ){
  7446.         free(input_type);
  7447.         return XLABEL;
  7448.         }
  7449.         if( strcmp(input_type, ylabel) == 0  ){
  7450.         free(input_type);
  7451.         return YLABEL;
  7452.         }
  7453.         if( strcmp(input_type, animate) == 0  ){
  7454.         free(input_type);
  7455.         return ANIMATE;
  7456.         }
  7457.         /* these are bitmap related flydraw commmands...must be removed. eventually */
  7458.         if( strcmp(input_type, transparent) == 0 ){
  7459.         free(input_type);
  7460.         return TRANSPARENT;
  7461.         }
  7462.         if( strcmp(input_type, status) == 0 || strcmp(input_type, nostatus) == 0 ){
  7463.         free(input_type);
  7464.         return STATUS;
  7465.         }
  7466.         if( strcmp(input_type, snaptogrid) == 0 ){
  7467.         free(input_type);
  7468.         return SNAPTOGRID;
  7469.         }
  7470.         if( strcmp(input_type, xsnaptogrid) == 0 ){
  7471.         free(input_type);
  7472.         return XSNAPTOGRID;
  7473.         }
  7474.         if( strcmp(input_type, ysnaptogrid) == 0 ){
  7475.         free(input_type);
  7476.         return YSNAPTOGRID;
  7477.         }
  7478.         if( strcmp(input_type, userinput_xy) == 0 ){
  7479.         free(input_type);
  7480.         return USERINPUT_XY;
  7481.         }
  7482.         if( strcmp(input_type, userinput_function) == 0 ){
  7483.         free(input_type);
  7484.         return USERINPUT_FUNCTION;
  7485.         }
  7486.         if( strcmp(input_type, usertextarea_xy) == 0 ){
  7487.         free(input_type);
  7488.         return USERTEXTAREA_XY;
  7489.         }
  7490.         if( strcmp(input_type, userinput) == 0 ){
  7491.         free(input_type);
  7492.         return USERINPUT;
  7493.         }
  7494.         if( strcmp(input_type, sgraph) == 0 ){
  7495.         free(input_type);
  7496.         return SGRAPH;
  7497.         }
  7498.         if( strcmp(input_type, jsmath) == 0 ){
  7499.         free(input_type);
  7500.         return JSMATH;
  7501.         }
  7502.         if( strcmp(input_type, trace_jscurve) == 0 ){
  7503.         free(input_type);
  7504.         return TRACE_JSCURVE;
  7505.         }
  7506.         if( strcmp(input_type, jscurve) == 0  ||  strcmp(input_type, jsplot) == 0 ){
  7507.         free(input_type);
  7508.         return JSCURVE;
  7509.         }
  7510.         if( strcmp(input_type, centerstring) == 0 || strcmp(input_type, title) == 0 ){
  7511.         free(input_type);
  7512.         return CENTERSTRING;
  7513.         }
  7514.         if( strcmp(input_type, setlimits) == 0 ){
  7515.         free(input_type);
  7516.         return SETLIMITS;
  7517.         }
  7518.         if( strcmp(input_type, xunit) == 0 ){
  7519.         free(input_type);
  7520.         return XUNIT;
  7521.         }
  7522.         if( strcmp(input_type, yunit) == 0 ){
  7523.         free(input_type);
  7524.         return YUNIT;
  7525.         }
  7526.         if( strcmp(input_type, angle) == 0 ){
  7527.         free(input_type);
  7528.         return ANGLE;
  7529.         }
  7530.         if( strcmp(input_type, halfline) == 0 || strcmp(input_type, demiline) == 0  ){
  7531.         free(input_type);
  7532.         return HALFLINE;
  7533.         }
  7534.         free(input_type);
  7535.         ungetc(c,infile);
  7536.         return 0;
  7537. }
  7538.  
  7539.