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  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.  
  13. #include "../../Lib/libwims.h"
  14. #include "canvasdraw.h"
  15. #include <assert.h>
  16. #include "canvasmacro.c"
  17.  
  18. /******************************************************************************
  19. **  Internal Functions
  20. ******************************************************************************/
  21. void    add_to_buffer(char *tmp); /* add tmp_buffer to the buffer */
  22. void    sync_input(FILE *infile);/* proceed with inputfile */
  23. void    canvas_error(char *msg);
  24. void    add_javascript_functions(int js_functions[], int canvas_root_id);
  25. void    reset();/* reset some global variables like "use_filled" , "use_dashed" */
  26. int     get_token(FILE *infile); /* read next char until EOL*/
  27. int     x2px(double x);
  28. int     y2px(double y);
  29. double  px2x(int x);
  30. double  px2y(int y);
  31. double  get_real(FILE *infile,int last); /* read a value; calculation and symbols allowed */
  32. char    *str_replace ( const char *word, const char *sub_word, const char *rep_word );
  33. char    *get_color(FILE *infile,int last); /* read hex-color or colorname -> hex */
  34. char    *get_string(FILE *infile,int last); /* get the string at the end of a command */
  35. char    *get_string_argument(FILE *infile,int last); /* the same, but with "comma" as  separator */
  36. char    *convert_hex2rgb(char *hexcolor);
  37. void    add_read_canvas(int reply_format,int reply_precision);
  38. void    make_js_include(int canvas_root_id);
  39. void    check_string_length(int length);/* checks if the length of string argument of command is correct */
  40. FILE    *js_include_file;
  41. FILE    *get_file(int *line_number, char **filename);
  42. FILE    *infile;    /* will be stdin */
  43. /******************************************************************************
  44. ** global
  45. ******************************************************************************/
  46. int finished = FALSE;/* main variable for signalling the end of the fly-script ; if finished = 1 ; write to stdout or canvasz */
  47. int line_number = 1;/* used in canvas_error() ; keep track of line number in canvasdraw/fly - script */
  48. /* set some variables to avoid trouble (NaN) in case of syntax and other usage errors */
  49. int xsize = 320;
  50. int ysize = 320;
  51. double xmin = 0.0;
  52. double xmax = 320.0;
  53. double ymin = 0.0;
  54. double ymax = 320.0;
  55. double tmax = 2;
  56. double tmin = -2;
  57. /* flag to indicate parsing of line status */
  58. int done = FALSE;
  59. int type; /* eg command number */
  60. int onclick = 0;/* 0 = noninteractive ; 1 = onclick ; 2 = draggable*/
  61. int slider = 0;/* slider=1 : x-values ; slider=2 : y-values;slider=3 angle values */
  62. int use_affine = FALSE;
  63. int use_rotate = FALSE;
  64. int use_filled = FALSE;
  65. int use_dashed = FALSE; /* dashing not natively supported in firefox  , for now... */
  66.  
  67. char buffer[MAX_BUFFER];/* contains js-functions with arguments ... all other basic code is directly printed into js-include file */
  68.  
  69. /******************************************************************************
  70. ** Main Program
  71. ******************************************************************************/
  72. int main(int argc, char *argv[]){
  73.     /* need unique id for every call to canvasdraw : rand(); is too slow...will result in many identical id's */
  74.     struct timeval tv;struct timezone tz;gettimeofday(&tv, &tz);unsigned int canvas_root_id = (unsigned int) tv.tv_usec;
  75.     infile = stdin;/* read flyscript via stdin */
  76.     int i,c;
  77.     double double_data[MAX_INT+1];
  78.     int int_data[MAX_INT+1];
  79.     for(i=0;i<MAX_INT;i++){int_data[i]=0;double_data[i]=0;}
  80.     int use_parametric = FALSE;/* will be reset after parametric plotting */
  81.     int use_axis = FALSE;
  82.     int use_axis_numbering = FALSE;
  83.     int use_pan_and_zoom = FALSE;
  84.     int use_safe_eval = FALSE; /* if true, add just once : js function to evaluate userinput values for plotting etc */
  85.     int use_js_math = FALSE; /* if true add js-function to convert math_function --> javascript math_function */
  86.     int use_js_plot = FALSE; /* if true , let js-engine plot the curve */
  87.     int line_width = 1;
  88.     int decimals = 2;
  89.     int precision = 100; /* 10 = 1;100=2;1000=3 decimal display for mouse coordinates or grid coordinate */
  90.     int use_userdraw = FALSE; /* flag to indicate user interaction: incompatible with "drag & drop" code !! */
  91.     int drag_type = -1;/* 0,1,2 : xy,x,y */
  92.     int use_tooltip = FALSE;
  93.     char *tooltip_text = "Click here";
  94.     char *temp = ""; /* */
  95.     char *bgcolor = "";/* used for background of canvas_div ; default is tranparent */
  96.     char *stroke_color = "255,0,0";
  97.     char *fill_color = "0,255,0";
  98.     char *font_family = "12px Ariel"; /* commands xaxistext,yaxistext,legend,text/textup/string/stringup may us this */
  99.     char *font_color = "#00000";
  100.     char *draw_type = "points";
  101.     char *fly_font = "normal";
  102.     char *input_style = "";
  103.     char *flytext = "";
  104.     char *affine_matrix = "[1,0,0,1,0,0]";
  105.     int pixelsize = 1;
  106.     int reply_format = 0;
  107.     int input_cnt = 0;
  108.     int ext_img_cnt = 0;
  109.     int slider_cnt = 0;
  110.     int font_size = 12;
  111.     int dashtype[2] = { 4 , 4 };
  112.     int js_function[MAX_JS_FUNCTIONS]; /* javascript functions include objects on demand basis : only once per object type */
  113.     for(i=0;i<MAX_JS_FUNCTIONS;i++){js_function[i]=0;}
  114.     int arrow_head = 8; /* size in px*/
  115.     int crosshair_size = 5; /* size in px*/
  116.     int plot_steps = 250;
  117.     int found_size_command = 0; /* 1 = found size ; 2 = found xrange; 3 = found yrange*/
  118.     int click_cnt = 1;
  119.     int clock_cnt = 0; /* counts the amount of clocks used -> unique object clock%d */
  120.     int linegraph_cnt = 0; /* identifier for command 'linegraph' ; multiple line graphs may be plotted in a single plot*/
  121.     int barchart_cnt = 0; /* identifier for command 'barchart' ; multiple charts may be plotted in a single plot*/
  122.     int legend_cnt = -1; /* to allow multiple legends to be used, for multiple piecharts etc  */
  123.     int reply_precision = 100; /* used for precision of student answers / drawings */
  124.     double angle = 0.0;
  125.     int clickfillmarge = 20;
  126.     int animation_type = 9; /* == object type curve in drag library */
  127.     int use_input_xy = 0; /* 1= input fields 2= textarea 3=calc y value*/
  128.     size_t string_length = 0;
  129.     double stroke_opacity = 0.8;
  130.     double fill_opacity = 0.8;
  131.     char *URL = "http://localhost/images";
  132.     memset(buffer,'\0',MAX_BUFFER);
  133.     void *tmp_buffer = "";
  134.    
  135.     /* default writing a unzipped js-include file into wims getfile directory */
  136.     char *w_wims_session = getenv("w_wims_session");
  137.     if(  w_wims_session == NULL || *w_wims_session == 0 ){
  138.         canvas_error("Hmmm, your wims environment does not exist...\nCanvasdraw should be used within wims.");
  139.     }
  140.     int L0=strlen(w_wims_session) + 21;
  141.     char *getfile_dir = my_newmem(L0); /* create memory to fit string precisely */
  142.     snprintf(getfile_dir,L0, "../sessions/%s/getfile",w_wims_session);/* string will fit precisely  */
  143.     mode_t process_mask = umask(0); /* check if file exists */
  144.     int result = mkdir(getfile_dir, S_IRWXU | S_IRWXG | S_IRWXO);
  145.     if( result == 0 || errno == EEXIST ){
  146.      umask(process_mask); /* be sure to set correct permission */
  147.      char *w_session = getenv("w_session");
  148.      int L1 = (int) (strlen(w_session)) + find_number_of_digits(canvas_root_id) + 48;
  149.     char *getfile_cmd = my_newmem(L1); /* create memory to fit string precisely */
  150.      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 */   
  151.     /* write the include tag to html page:<script type="text/javascript" src="wims.cgi?session=%s&cmd=getfile&special_parm=11223344_js"></script> */
  152.     /* now write file into getfile dir*/
  153.     char *w_wims_home = getenv("w_wims_home"); /* "/home/users/wims" : we need absolute path for location */
  154.     int L2 = (int) (strlen(w_wims_home)) + (int) (strlen(w_wims_session)) + find_number_of_digits(canvas_root_id) + 23;
  155.     char *location = my_newmem(L2); /* create memory to fit string precisely */
  156.     snprintf(location,L2,"%s/sessions/%s/getfile/%d.js",w_wims_home,w_wims_session,canvas_root_id);/*absolute path */
  157.     js_include_file = fopen(location,"w");/* open the file location for writing */
  158.     /* check on opening...if nogood : mount readonly? disk full? permissions not set correctly? */
  159.     if(js_include_file == NULL){ canvas_error("SHOULD NOT HAPPEN : could not write to javascript include file...check your system logfiles !" );}
  160.  
  161. /* ----------------------------------------------------- */
  162. /* while more lines to process */
  163.  
  164.     while(!finished){
  165.         if(line_number>1 && found_size_command == 0){canvas_error("command \"size xsize,ysize\" needs to come first ! ");}
  166.         type = get_token(infile);
  167.         done = FALSE;
  168.         /*
  169.         @canvasdraw
  170.         @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...)
  171.         @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> 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();
  172.         The replyformat is : object_number : x-orig : y-orig : x-drag : y-drag<br />The x-orig/y-orig will be returned in maximium precision...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.<br />example:<br />size 200,200;xrange -5,5;yrange -5,5;hline 0,0,black;vline 0,0,black<br />plot red,sin(x)<br />drag xy<br />html 0,0,5,-5, &amp;euro; <br />lines green,2,0,2,-2,-2,2,-2,0;rectangle 1,1,4,4,purple;frectangle -1,-1,-4,-4,yellow</li></ul>
  173.         */
  174.         switch(type){
  175.         case END:
  176.         finished = 1;
  177.         done = TRUE;
  178.         break;
  179.         case 0:
  180.             sync_input(infile);
  181.             break;
  182.         case COMMENT:
  183.             sync_input(infile);
  184.             break;
  185.         case EMPTY:
  186.             sync_input(infile);
  187.             break;
  188.         case SIZE:
  189.             /*
  190.             @size width,height
  191.             @set canvas size in pixels
  192.             @mandatory first command
  193.             @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
  194.             */
  195.             found_size_command = 1;
  196.             xsize = (int)(abs(round(get_real(infile,0)))); /* just to be sure that sizes > 0 */
  197.             ysize = (int)(abs(round(get_real(infile,1))));
  198.             /* sometimes we want xrange / yrange to be in pixels...without telling x/y-range */
  199.             xmin = 0;xmax = xsize;
  200.             ymin = 0;ymax = ysize;
  201.  
  202. /*
  203.  The sequence in which stuff is finally printed is important !!
  204.  for example, when writing a 'include.js" the may not be a "script tag <script>" etc etc
  205. */
  206. fprintf(stdout,"\n<script type=\"text/javascript\">var wims_status = \"$status\";</script>\n<!-- 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,xsize,ysize,canvas_root_id,canvas_root_id);
  207. fprintf(js_include_file,"\n<!-- begin generated javascript include for canvasdraw -->\n");
  208. fprintf(stdout,"<!-- include actual object code via include file -->\n<script type=\"text/javascript\" src=\"%s\"></script>\n",getfile_cmd);
  209. fprintf(js_include_file,"var wims_canvas_function%d = function(){\n<!-- common used stuff -->\n\
  210. var xsize = %d;\
  211. var ysize = %d;\
  212. var precision = 100;\
  213. var canvas_div = document.getElementById(\"canvas_div%d\");\
  214. 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;};\
  215. 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;};\
  216. 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);};};\
  217. 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);};};\
  218. 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);};};\
  219. 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);};};\
  220. function scale_x_radius(rx){return rx*xsize/(xmax - xmin);};\
  221. function scale_y_radius(ry){return ry*ysize/(ymax - ymin);};\
  222. function distance(x1,y1,x2,y2){return parseInt(Math.sqrt( (x1-x2)*(x1-x2) + (y1-y2)*(y1-y2) ));};\
  223. 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) ));};\
  224. 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;};\
  225. var x_use_snap_to_grid = 0;var y_use_snap_to_grid = 0;var snap_x = 1;var snap_y = 1;\
  226. function snap_to_x(x){return x2px(snap_x*(Math.round((px2x(x))/snap_x)));};\
  227. function snap_to_y(y){return y2px(snap_y*(Math.round((px2y(y))/snap_y)));};\
  228. var xlogbase = 10;\
  229. var ylogbase = 10;\
  230. var use_xlogscale = 0;\
  231. var use_ylogscale = 0;\
  232. var x_strings = null;\
  233. var y_strings = null;\
  234. var use_pan_and_zoom = 0;\
  235. var use_jsmath = 0;\
  236. var xstart = 0;\
  237. var ystart = 0;\
  238. var unit_x=\" \";\
  239. var unit_y=\" \";",canvas_root_id,xsize,ysize,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  240. /* default add the drag code : nearly always used ...*/
  241. add_drag_code(js_include_file,DRAG_CANVAS,canvas_root_id);
  242.             break;
  243.         case XRANGE:
  244.         /*
  245.         @ xrange xmin,xmax
  246.         @ if not given: 0,xsize (eg in pixels)
  247.         */
  248.             for(i = 0 ; i<2; i++){
  249.                 switch(i){
  250.                     case 0: xmin = get_real(infile,0);break;
  251.                     case 1: xmax = get_real(infile,1);break;
  252.                     default: break;
  253.                 }
  254.             }
  255.             if(xmin >= xmax){canvas_error(" xrange is not OK : xmin &lt; xmax !\n");}
  256.             fprintf(js_include_file,"var xmin = %f;var xmax = %f;",xmin,xmax);
  257.             found_size_command++;
  258.             break;
  259.         case YRANGE:
  260.         /*
  261.         @ yrange ymin,ymax
  262.         @ if not given 0,ysize (eg in pixels)
  263.         */
  264.             for(i = 0 ; i<2; i++){
  265.                 switch(i){
  266.                     case 0: ymin = get_real(infile,0);break;
  267.                     case 1: ymax = get_real(infile,1);break;
  268.                     default: break;
  269.                 }
  270.             }
  271.             if(ymin >= ymax){canvas_error(" yrange is not OK : ymin &lt; ymax !\n");}
  272.             fprintf(js_include_file,"var ymin = %f;var ymax = %f;",ymin,ymax);
  273.             found_size_command++;
  274.             break;
  275.         case TRANGE:
  276.         /*
  277.         @ trange tmin,tmax
  278.         @ default -2,2
  279.         */
  280.             use_parametric = TRUE;
  281.             for(i = 0 ; i<2; i++){
  282.                 switch(i){
  283.                     case 0: tmin = get_real(infile,0);break;
  284.                     case 1: tmax = get_real(infile,1);break;
  285.                     default: break;
  286.                 }
  287.             }
  288.             if(tmin >= tmax ){canvas_error(" trange is not OK : tmin &lt; tmax!\n");}
  289.             break;
  290.         case LINEWIDTH:
  291.         /*
  292.         @ linewidth int
  293.         @ default 1
  294.         */
  295.             line_width = (int) (get_real(infile,1));
  296.             break;
  297.         case ARROWHEAD:
  298.         /*
  299.         @ arrowhead int
  300.         @ default 8 (pixels)
  301.         */
  302.             arrow_head = (int) (get_real(infile,1));
  303.             break;
  304.         case CROSSHAIRSIZE:
  305.         /*
  306.         @ crosshairsize int
  307.         @ default 10 (px)
  308.         */
  309.             crosshair_size = (int) (get_real(infile,1));
  310.             break;
  311.         case CROSSHAIR:
  312.         /*
  313.         @ crosshair x,y,color
  314.         @ draw a single crosshair point at (x;y) in color 'color'
  315.         @ use command 'crosshairsize int' and / or 'linewidth int'  to adust
  316.         @ may be set draggable / onclick
  317.         */
  318.             for(i=0;i<3;i++){
  319.                 switch(i){
  320.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  321.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  322.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  323.                         decimals = find_number_of_digits(precision);
  324.                         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);
  325.                         click_cnt++;reset();
  326.                         break;
  327.                     default:break;
  328.                 }
  329.             }
  330.             break;
  331.         case CROSSHAIRS:
  332.         /*
  333.         @ crosshairs color,x1,y1,x2,y2,...,x_n,y_n
  334.         @ draw multiple crosshair points at given coordinates in color 'color'
  335.         @ use command 'crosshairsize int' and / or 'linewidth int'  to adust
  336.         @ may be set draggable / onclick individually (!)
  337.         */
  338.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  339.             fill_color = stroke_color;
  340.             i=0;
  341.             while( ! done ){     /* get next item until EOL*/
  342.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  343.                 if(i%2 == 0 ){
  344.                     double_data[i] = get_real(infile,0); /* x */
  345.                 }
  346.                 else
  347.                 {
  348.                     double_data[i] = get_real(infile,1); /* y */
  349.                 }
  350.                 i++;
  351.             }
  352.             decimals = find_number_of_digits(precision);
  353.             for(c=0 ; c < i-1 ; c = c+2){
  354.                 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);
  355.                 click_cnt++;
  356.             }
  357.             reset();
  358.             break;
  359.         case POINT:
  360.         /*
  361.         @ point x,y,color
  362.         @ draw a single point at (x;y) in color 'color'
  363.         @ use command 'linewidth int'  to adust size
  364.         @ may be set draggable / onclick
  365.         @ will not resize on zooming <br />(command 'circle x,y,r,color' will resize on zooming)
  366.         */
  367.             for(i=0;i<3;i++){
  368.                 switch(i){
  369.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  370.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  371.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  372.                     decimals = find_number_of_digits(precision);
  373.                     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);
  374.                     click_cnt++;break;
  375.                     default: break;
  376.                 }
  377.             }
  378.             reset();
  379.             break;
  380.         case POINTS:
  381.         /*
  382.         @ points color,x1,y1,x2,y2,...,x_n,y_n
  383.         @ draw multiple points at given coordinates in color 'color'
  384.         @ use command 'linewidth int'  to adust size
  385.         @ may be set draggable / onclick individually (!)
  386.         */
  387.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  388.             fill_color = stroke_color;
  389.             i=0;
  390.             while( ! done ){     /* get next item until EOL*/
  391.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  392.                 if(i%2 == 0 ){
  393.                     double_data[i] = get_real(infile,0); /* x */
  394.                 }
  395.                 else
  396.                 {
  397.                     double_data[i] = get_real(infile,1); /* y */
  398.                 }
  399.                 i++;
  400.             }
  401.             decimals = find_number_of_digits(precision);           
  402.             for(c = 0 ; c < i-1 ; c = c+2){
  403.                 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);
  404.                 click_cnt++;
  405.             }
  406.             reset();
  407.             break;
  408.         case SEGMENT:
  409.         /*
  410.         @ segment x1,y1,x2,y2,color
  411.         @ draw a line segment between points (x1:y1)--(x2:y2) in color 'color'
  412.         @ may be set draggable / onclick
  413.         */
  414.             for(i=0;i<5;i++) {
  415.                 switch(i){
  416.                     case 0: double_data[0]= get_real(infile,0);break; /* x1-values */
  417.                     case 1: double_data[1]= get_real(infile,0);break; /* y1-values */
  418.                     case 2: double_data[2]= get_real(infile,0);break; /* x2-values */
  419.                     case 3: double_data[3]= get_real(infile,0);break; /* y2-values */
  420.                     case 4: stroke_color=get_color(infile,1);/* name or hex color */
  421.                         decimals = find_number_of_digits(precision);
  422.                         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);
  423.                         click_cnt++;reset();
  424.                         break;
  425.                     default: break;
  426.                 }
  427.             }
  428.             break;
  429.         case LINE:
  430.         /*
  431.         @ line x1,y1,x2,y2,color
  432.         @ draw a line through points (x1:y1)--(x2:y2) in color 'color'
  433.         @ or use command 'curve color,formula' to draw the line <br />(uses more points to draw the line; is however better draggable)
  434.         @ may be set draggable / onclick
  435.         */
  436.             for(i=0;i<5;i++){
  437.                 switch(i){
  438.                     case 0: double_data[10]= get_real(infile,0);break; /* x-values */
  439.                     case 1: double_data[11]= get_real(infile,0);break; /* y-values */
  440.                     case 2: double_data[12]= get_real(infile,0);break; /* x-values */
  441.                     case 3: double_data[13]= get_real(infile,0);break; /* y-values */
  442.                     case 4: stroke_color=get_color(infile,1);/* name or hex color */
  443.                     if( double_data[10] == double_data[12] ){ /* vertical line*/
  444.                         double_data[1] = xmin;
  445.                         double_data[3] = ymax;
  446.                         double_data[0] = double_data[10];
  447.                         double_data[2] = double_data[10];
  448.                     }
  449.                     else
  450.                     {
  451.                         if( double_data[11] == double_data[13] ){ /* horizontal line */
  452.                             double_data[1] = double_data[11];
  453.                             double_data[3] = double_data[11];
  454.                             double_data[0] = ymin;
  455.                             double_data[2] = xmax;
  456.                         }
  457.                         else
  458.                         {
  459.                         /* m */
  460.                         double_data[5] = (double_data[13] - double_data[11]) /(double_data[12] - double_data[10]);
  461.                         /* q */
  462.                         double_data[6] = double_data[11] - ((double_data[13] - double_data[11]) /(double_data[12] - double_data[10]))*double_data[10];
  463.                        
  464.                         /*xmin,m*xmin+q,xmax,m*xmax+q*/
  465.                        
  466.                             double_data[1] = (double_data[5])*(xmin)+(double_data[6]);
  467.                             double_data[3] = (double_data[5])*(xmax)+(double_data[6]);
  468.                             double_data[0] = xmin;
  469.                             double_data[2] = xmax;
  470.                         }
  471.                     }
  472.                     decimals = find_number_of_digits(precision);
  473.                     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);
  474.                     click_cnt++;reset();
  475.                     break;
  476.                 }
  477.             }
  478.             break;
  479.         case HLINE:
  480.         /*
  481.         @ hline x,y,color
  482.         @ draw a horizontal line through point (x:y) in color 'color'
  483.         @ or use command 'curve color,formula' to draw the line <br />(uses more points to draw the line; is however better draggable)
  484.         @ may be set draggable / onclick
  485.         */
  486.             for(i=0;i<3;i++) {
  487.                 switch(i){
  488.                     case 0: double_data[0] = get_real(infile,0);break; /* x-values */
  489.                     case 1: double_data[1] = get_real(infile,0);break; /* y-values */
  490.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  491.                     double_data[3] = double_data[1];
  492.                     decimals = find_number_of_digits(precision);
  493.                     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);
  494.                     click_cnt++;reset();
  495.                     break;
  496.                 }
  497.             }
  498.             break;
  499.         case VLINE:
  500.         /*
  501.         @ vline x,y,color
  502.         @ draw a vertical line through point (x:y) in color 'color'
  503.         @ may be set draggable / onclick
  504.         */
  505.             for(i=0;i<3;i++) {
  506.                 switch(i){
  507.                     case 0: double_data[0] = get_real(infile,0);break; /* x-values */
  508.                     case 1: double_data[1] = get_real(infile,0);break; /* y-values */
  509.                     case 2: stroke_color=get_color(infile,1);/* name or hex color */
  510.                         double_data[2] = double_data[0];
  511.                         decimals = find_number_of_digits(precision);
  512.                         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);
  513.                         click_cnt++;reset();
  514.                     break;
  515.                 }
  516.             }
  517.             break;
  518.         case SQUARE:
  519.         /*
  520.         @ square x,y,side (px) ,color
  521.         @ draw a square with left top corner (x:y) with side 'side' in color 'color'
  522.         @ use command 'fsquare x,y,side,color' for a filled square
  523.         @ use command/keyword  'filled' before command 'square x,y,side,color'
  524.         @ use command 'fillcolor color' before 'fsquare' to set the fill colour.
  525.         @ may be set draggable / onclick
  526.         */
  527.             for(i=0;i<5;i++){
  528.                 switch(i){
  529.                     case 0:double_data[0] = get_real(infile,0);break; /* x1-values */
  530.                     case 1:double_data[1] = get_real(infile,0);break; /* y1-values */
  531.                     case 2:double_data[2] = (int) (get_real(infile,0));break; /* width in px */
  532.                     case 3:
  533.                         stroke_color = get_color(infile,1);/* name or hex color */
  534.                         decimals = find_number_of_digits(precision);
  535.                         double_data[3] = double_data[0] + (xmax - xmin)*double_data[2]/xsize;
  536.                         double_data[4] = double_data[1] + -1*(ymax - ymin)*double_data[2]/ysize;
  537.                         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);
  538.                         click_cnt++;reset();
  539.                         break;
  540.                 }
  541.             }
  542.             break;
  543.         case ROUNDRECT:
  544.         /*
  545.         @ roundrect x1,y1,x2,y2,radius,color
  546.         @ use command 'froundrect x1,y1,x2,y2,radius,color' for a filled rectangle
  547.         @ use command/keyword  'filled' before command 'roundrect x1,y1,x2,y2,radius,color'
  548.         @ use command 'fillcolor color' before 'froundrect' to set the fill colour.
  549.         @ may be set draggable / onclick
  550.         */
  551.             for(i=0;i<6;i++){
  552.                 switch(i){
  553.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  554.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  555.                     case 2:double_data[2] = get_real(infile,0);break; /* x-values */
  556.                     case 3:double_data[3] = get_real(infile,0);break; /* y-values */
  557.                     case 4:int_data[0] = (int) (get_real(infile,0));break; /* radius value in pixels */
  558.                     case 5:stroke_color = get_color(infile,1);/* name or hex color */
  559.                         /* ensure no inverted roundrect is produced... */
  560.                         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];}
  561.                         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];}
  562.                         decimals = find_number_of_digits(precision);
  563.                         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);
  564.                         click_cnt++;reset();
  565.                     break;
  566.                 }
  567.             }
  568.             break;
  569.         case RECT:
  570.         /*
  571.         @ rect x1,y1,x2,y2,color
  572.         @ use command 'rect x1,y1,x2,y2,color' for a filled rectangle
  573.         @ use command/keyword  'filled' before command 'rect x1,y1,x2,y2,color'
  574.         @ use command 'fillcolor color' before 'frect' to set the fill colour.
  575.         @ may be set draggable / onclick
  576.         */
  577.             for(i=0;i<5;i++){
  578.                 switch(i){
  579.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  580.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  581.                     case 2:double_data[2] = get_real(infile,0);break; /* x-values */
  582.                     case 3:double_data[3] = get_real(infile,0);break; /* y-values */
  583.                     case 4:stroke_color = get_color(infile,1);/* name or hex color */
  584.                         decimals = find_number_of_digits(precision);
  585.                         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);
  586.                         click_cnt++;reset();
  587.                         break;
  588.                 }
  589.             }
  590.             break;
  591.         case POLYLINE:
  592.         /*
  593.         @ polyline color,x1,y1,x2,y2...x_n,y_n
  594.         @ may be set draggable / onclick
  595.         */
  596.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  597.             i=0;
  598.             c=0;
  599.             while( ! done ){     /* get next item until EOL*/
  600.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  601.                 for( c = 0 ; c < 2; c++){
  602.                     if(c == 0 ){
  603.                         double_data[i] = get_real(infile,0);
  604.                         i++;
  605.                     }
  606.                     else
  607.                     {
  608.                         double_data[i] = get_real(infile,1);
  609.                         i++;
  610.                     }
  611.                 }
  612.             }
  613.             /* draw path : not closed & not filled */
  614.             decimals = find_number_of_digits(precision);
  615.             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);
  616.             click_cnt++;reset();
  617.             break;
  618.         case POLY:
  619.         /*
  620.         @ poly color,x1,y1,x2,y2...x_n,y_n
  621.         @ draw closed polygon
  622.         @ use command 'fpoly' to fill it, use command 'fillcolor color' to set the fill color
  623.         @ may be set draggable / onclick
  624.         */
  625.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  626.             i=0;
  627.             c=0;
  628.             while( ! done ){     /* get next item until EOL*/
  629.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  630.                 for( c = 0 ; c < 2; c++){
  631.                     if(c == 0 ){
  632.                         double_data[i] = get_real(infile,0);
  633.                         i++;
  634.                     }
  635.                     else
  636.                     {
  637.                         double_data[i] = get_real(infile,1);
  638.                         i++;
  639.                     }
  640.                 }
  641.             }
  642.             /* draw path :  closed & optional filled */
  643.                 decimals = find_number_of_digits(precision);
  644.                 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);
  645.                 click_cnt++;reset();
  646.             break;
  647.         case ARC:
  648.         /*
  649.          @ arc xc,yc,width,height,start_angle,end_angle,color
  650.          @ can not be set "onclick" or "drag xy"
  651.          @ attention: width == height == radius in pixels)
  652.         */
  653.             for(i=0;i<7;i++){
  654.                 switch(i){
  655.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  656.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  657.                     case 2:int_data[0] = (int)(get_real(infile,0));break; /* width in pixels ! */
  658.                     case 3:int_data[1] = (int)(get_real(infile,0));break; /* height in pixels ! */
  659.                     case 4:double_data[2] = get_real(infile,0);break; /* start angle in degrees */
  660.                     case 5:double_data[3] = get_real(infile,0);break; /* end angle in degrees */
  661.                     case 6:stroke_color = get_color(infile,1);/* name or hex color */
  662.                     /* in Shape library:
  663.                         x[0] = x[1] = xc
  664.                         y[0] = y[1] = yc
  665.                         w[0] = w[1] = radius = width = height  
  666.                         h[0] = start_angle ; h[1] = end_engle
  667.                     */
  668.                         decimals = find_number_of_digits(precision);
  669.                         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);
  670.                         reset();
  671.                     break;
  672.                 }
  673.             }
  674.             break;
  675.         case ELLIPSE:
  676.         /*
  677.         @ ellipse xc,yc,radius_x,radius_y,color
  678.         @ a ellipse with center xc/yc in x/y-range
  679.         @ radius_x and radius_y are in pixels
  680.         @ may be set draggable / onclick
  681.         @ will shrink / expand on zoom out / zoom in
  682.         */
  683.             for(i=0;i<5;i++){
  684.                 switch(i){
  685.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  686.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  687.                     case 2:double_data[2] = get_real(infile,0);break; /* rx -> px  */
  688.                     case 3:double_data[3] = get_real(infile,0);break; /* ry -> px  */
  689.                     case 4:stroke_color = get_color(infile,1);/* name or hex color */
  690.                         decimals = find_number_of_digits(precision);
  691.                         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);
  692.                         click_cnt++;reset();
  693.                     break;
  694.                 }
  695.             }
  696.             break;
  697.         case DASHTYPE:
  698.         /*
  699.         @ dashtype int ,int
  700.         @ When dashed is set, the objects will be drawn with this dashtyp
  701.         @ default value "dashtype 2,2"
  702.         */
  703.             for(i=0;i<2;i++){
  704.                 switch(i){
  705.                     case 0 : dashtype[0] = (int) line_width*( get_real(infile,0)) ; break;
  706.                     case 1 : dashtype[1] = (int) line_width*( get_real(infile,1)) ; break;
  707.                 }
  708.             }
  709.         break;
  710.         case CIRCLE:
  711.         /*
  712.         @ circle xc,yc,width (2*r in pixels),color
  713.         @ use command 'fcircle xc,yc,d,color' or command 'filled' for a filled disk
  714.         @ use command 'fillcolor color' to set the fillcolor
  715.         @ may be set draggable / onclick
  716.         @ will shrink / expand on zoom out / zoom in
  717.         */
  718.             for(i=0;i<4;i++){
  719.                 switch(i){
  720.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  721.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  722.                     case 2: double_data[2] = px2x((get_real(infile,0))/2) - px2x(0);break; /* radius in 'dx' xrange*/
  723.                     case 3: stroke_color = get_color(infile,1);/* name or hex color */
  724.                         decimals = find_number_of_digits(precision);
  725.                         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);
  726.                         click_cnt++;reset();
  727.                     break;
  728.                 }
  729.             }
  730.             break;
  731.         case RAYS:
  732.         /*
  733.          @ rays color,xc,yc,x1,y1,x2,y2,x3,y3...x_n,y_n
  734.          @ draw rays in color 'color' and center (xc:yc)
  735.          @ may be set draggable or onclick (every individual ray)
  736.         */
  737.             stroke_color=get_color(infile,0);
  738.             fill_color = stroke_color;
  739.             double_data[0] = get_real(infile,0);/* xc */
  740.             double_data[1] = get_real(infile,0);/* yc */
  741.             i=2;
  742.             while( ! done ){     /* get next item until EOL*/
  743.                 if(i > MAX_INT - 1){canvas_error("in command rays to many points / rays in argument: repeat command multiple times to fit");}
  744.                 if(i%2 == 0 ){
  745.                     double_data[i] = get_real(infile,0); /* x */
  746.                 }
  747.                 else
  748.                 {
  749.                     double_data[i] = get_real(infile,1); /* y */
  750.                 }
  751.             fprintf(js_include_file,"/* double_data[%d] = %f */\n",i,double_data[i]);
  752.                 i++;
  753.             }
  754.            
  755.             if( i%2 != 0 ){canvas_error("in command rays: unpaired x or y value");}
  756.             decimals = find_number_of_digits(precision);           
  757.             for(c=2; c<i;c = c+2){
  758.                 click_cnt++;
  759.                 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);
  760.             }
  761.             reset();
  762.             break;
  763.         case ARROW:
  764.         /*
  765.         @ arrow x1,y1,x2,y2,h,color
  766.         @ draw a single headed arrow/vector from (x1:y1) to (x2:y2)<br />with arrowhead size h in px and in color 'color'
  767.         @ use command 'linewidth int' to adjust thickness of the arrow
  768.         @ may be set draggable / onclick
  769.         */
  770.             for(i=0;i<6;i++){
  771.                 switch(i){
  772.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  773.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  774.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  775.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  776.                     case 4: arrow_head = (int) get_real(infile,0);break;/* h */
  777.                     case 5: stroke_color = get_color(infile,1);/* name or hex color */
  778.                         decimals = find_number_of_digits(precision);
  779.                         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);
  780.                         click_cnt++;
  781.                         reset();
  782.                         break;
  783.                 }
  784.             }
  785.             break;
  786.         case ARROW2:
  787.         /*
  788.         @ arrow2 x1,y1,x2,y2,h,color
  789.         @ draw a double headed arrow/vector from (x1:y1) to (x2:y2)<br />with arrowhead size h in px and  in color 'color'
  790.         @ use command 'arrowhead int' to adjust the arrow head size
  791.         @ use command 'linewidth int' to adjust thickness of the arrow
  792.         @ may be set draggable / onclick
  793.         */
  794.             for(i=0;i<6;i++){
  795.                 switch(i){
  796.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  797.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  798.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  799.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  800.                     case 4: arrow_head = (int) get_real(infile,0);break;/* h */
  801.                     case 5: stroke_color = get_color(infile,1);/* name or hex color */
  802.                         decimals = find_number_of_digits(precision);
  803.                         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);
  804.                         click_cnt++;reset();
  805.                         break;
  806.                 }
  807.             }
  808.             break;
  809.         case PARALLEL:
  810.         /*
  811.          @ parallel x1,y1,x2,y2,dx,dy,n,[colorname or #hexcolor]
  812.          @ can not be set "onclick" or "drag xy"
  813.         */
  814.             for( i = 0;i < 8; i++ ){
  815.                 switch(i){
  816.                     case 0: double_data[0] = get_real(infile,0);break; /* x1-values  -> x-pixels*/
  817.                     case 1: double_data[1] = get_real(infile,0);break; /* y1-values  -> y-pixels*/
  818.                     case 2: double_data[2] = get_real(infile,0);break; /* x2-values  -> x-pixels*/
  819.                     case 3: double_data[3] = get_real(infile,0);break; /* y2-values  -> y-pixels*/
  820.                     case 4: double_data[4] = xmin + get_real(infile,0);break; /* xv -> x-pixels */
  821.                     case 5: double_data[5] = ymax + get_real(infile,0);break; /* yv -> y-pixels */
  822.                     case 6: int_data[0] = (int) (get_real(infile,0));break; /* n  */
  823.                     case 7: stroke_color=get_color(infile,1);/* name or hex color */
  824.                     decimals = find_number_of_digits(precision);
  825.                     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);
  826.                     click_cnt++;reset();
  827.                     break;
  828.                     default: break;
  829.                 }
  830.             }
  831.             break;
  832.         case TRIANGLE:
  833.         /*
  834.          @triangle x1,y1,x2,y2,x3,y3,color
  835.          @may be set draggable / onclic
  836.         */
  837.             for(i=0;i<7;i++){
  838.                 switch(i){
  839.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  840.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  841.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  842.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  843.                     case 4: double_data[4] = get_real(infile,0);break; /* x */
  844.                     case 5: double_data[5] = get_real(infile,0);break; /* y */
  845.                     case 6: stroke_color = get_color(infile,1);/* name or hex color */
  846.                         decimals = find_number_of_digits(precision);
  847.                         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);
  848.                         click_cnt++;reset();
  849.                         break;
  850.                     default: break;
  851.                 }
  852.             }
  853.             break;
  854.         case LATTICE:
  855.         /*
  856.          @lattice x0,y0,xv1,yv1,xv2,yv2,n1,n2,color
  857.          @can not be set "onclick" or "drag xy"
  858.         */
  859.             if( js_function[DRAW_LATTICE] != 1 ){ js_function[DRAW_LATTICE] = 1;}
  860.             for( i = 0; i<9; i++){
  861.                 switch(i){
  862.                     case 0: int_data[0] = x2px(get_real(infile,0));break; /* x0-values  -> x-pixels*/
  863.                     case 1: int_data[1] = y2px(get_real(infile,0));break; /* y0-values  -> y-pixels*/
  864.                     case 2: int_data[2] = (int) (get_real(infile,0));break; /* x1-values  -> x-pixels*/
  865.                     case 3: int_data[3] = (int) -1*(get_real(infile,0));break; /* y1-values  -> y-pixels*/
  866.                     case 4: int_data[4] = (int) (get_real(infile,0));break; /* x2-values  -> x-pixels*/
  867.                     case 5: int_data[5] = (int) -1*(get_real(infile,0));break; /* y2-values  -> y-pixels*/
  868.                     case 6: int_data[6] = (int) (get_real(infile,0));break; /* n1-values */
  869.                     case 7: int_data[7] = (int) (get_real(infile,0));break; /* n2-values */
  870.                     case 8: stroke_color=get_color(infile,1);
  871.                         decimals = find_number_of_digits(precision);
  872.                         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);
  873.                         check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  874.                         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);
  875.                         add_to_buffer(tmp_buffer);
  876.                     break;
  877.                     default:break;
  878.                 }
  879.             }
  880.             reset();
  881.             break;
  882.         case SNAPTOGRID:
  883.         /*
  884.          @ snaptogrid
  885.          @ keyword (no arguments rewquired) needs to be defined before command 'userdraw' and after command 'grid'
  886.          @ in case of userdraw the drawn points will snap to xmajor / ymajor grid
  887.          @ 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 />
  888.         */
  889.         fprintf(js_include_file,"\nx_use_snap_to_grid = 1;y_use_snap_to_grid = 1;");
  890.         break;
  891.         case XSNAPTOGRID:
  892.         /*
  893.          @ xsnaptogrid
  894.          @ keyword (no arguments rewquired) needs to be defined before command 'userdraw' and after command 'grid'
  895.          @ in case of userdraw the drawn points will snap to xmajor grid
  896.          @ 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 />
  897.         */
  898.         fprintf(js_include_file,"\nx_use_snap_to_grid = 1;y_use_snap_to_grid = 0;");
  899.         break;
  900.         case YSNAPTOGRID:
  901.         /*
  902.          @ ysnaptogrid
  903.          @ keyword (no arguments rewquired) needs to be defined before command 'userdraw' and after command 'grid'
  904.          @ in case of userdraw the drawn points will snap to ymajor grid
  905.          @ 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 />
  906.         */
  907.         fprintf(js_include_file,"\nx_use_snap_to_grid = 0;y_use_snap_to_grid = 1;");
  908.         break;
  909.         case USERTEXTAREA_XY:
  910.         /*
  911.         @ usertextarea_xy
  912.         @ keyword
  913.         @ to be used in combination with command "userdraw object_type,color" wherein object_type is only segment / polyline for the time being...
  914.         @ if set two textareas are added to the document<br />(one for x-values , one for y-values)
  915.         @ the student may use this as correction for (x:y) on a drawing (or to draw without mouse, using just the coordinates)
  916.         @ user drawings will not zoom on zooming (or pan on panning)
  917.         */
  918.             if( use_input_xy != 0 ){canvas_error("usertextarea_xy can not be combined with userinput_xy command");}
  919.             if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  920.             use_input_xy = 2;
  921.             break;
  922.         case USERINPUT_XY:
  923.         /*
  924.         @ userinput_xy
  925.         @ keyword
  926.         @ to be used in combination with command "userdraw object_type,color"
  927.         @ 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)
  928.         @ the student may use this as correction for (x:y) on a drawing (or to draw without mouse, using just the coordinates)
  929.         @ 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.
  930.         @ can not be combined with command "intooltip tiptext" <br />note: the 'tooltip div element' is used for placing inputfields
  931.         @ user drawings will not zoom on zooming (or pan on panning)
  932.         */
  933.             /* add simple eval check to avoid code injection with unprotected eval(string) */
  934.             if( use_input_xy != 0 ){canvas_error("userinput_xy can not be combined with usertextarea_xy command");}
  935.             if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  936.             use_input_xy = 1;
  937.             break;
  938.         case USERDRAW:
  939.         /*
  940.         @ userdraw object_type,color
  941.         @ 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>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></ul>
  942.         @ 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)
  943.         @ 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
  944.         @ note: object_type polygone: Will be finished (the object is closed) when clicked on the first point of the polygone again.
  945.         @ 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)
  946.         @ use command "filled", "opacity int,int"  and "fillcolor color" to trigger coloured filling of fillable objects
  947.         @ use command "dashed" and/or "dashtype int,int" to trigger dashing
  948.         @ use command "replyformat int" to control / adjust output formatting of javascript function read_canvas();
  949.         @ may be combined with onclick or drag xy  of other components of flyscript objects (although not very usefull...)
  950.         @ may be combined with keyword 'userinput_xy' or
  951.         @ 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.!
  952.         */
  953.             if( use_userdraw == TRUE ){ /* only one object type may be drawn*/
  954.                 canvas_error("Only one userdraw primitive may be used: read documentation !!");
  955.             }
  956.             reply_precision = precision;
  957.             use_userdraw = TRUE;
  958.             fprintf(js_include_file,"\n<!-- begin userdraw mouse events -->\nvar userdraw_x = new Array();var userdraw_y = new Array();var 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]);
  959.             draw_type = get_string_argument(infile,0);
  960.             stroke_color = get_color(infile,1);
  961.             if( strcmp(draw_type,"point") == 0 ){
  962.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  963.                 if(reply_format == 0 ){reply_format = 8;}
  964.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  965.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  966.                 if(use_input_xy == 1){
  967.                     add_input_circle(js_include_file,1,1);
  968.                     add_input_xy(js_include_file,canvas_root_id);
  969.                 }
  970.                 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);
  971.             }
  972.             else
  973.             if( strcmp(draw_type,"points") == 0 ){
  974.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  975.                 if(reply_format == 0 ){reply_format = 8;}
  976.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  977.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  978.                 if(use_input_xy == 1){
  979.                     add_input_circle(js_include_file,1,2);
  980.                     add_input_xy(js_include_file,canvas_root_id);
  981.                 }
  982.                 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);
  983.             }
  984.             else
  985.             if( strcmp(draw_type,"segment") == 0 ){
  986.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  987.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  988.                 if(reply_format == 0){reply_format = 11;}
  989.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  990.                 if(use_input_xy == 1){
  991.                     add_input_segment(js_include_file,1);
  992.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  993.                 }
  994.                 add_js_segments(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  995.             }
  996.             else
  997.             if( strcmp(draw_type,"polyline") == 0 ){
  998.                 if( js_function[DRAW_POLYLINE] != 1 ){ js_function[DRAW_POLYLINE] = 1;}
  999.                 if(reply_format == 0){reply_format = 23;}
  1000.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1001.                 if( use_input_xy == 1 ){
  1002.                     add_input_polyline(js_include_file);
  1003.                     add_input_xy(js_include_file,canvas_root_id);
  1004.                 }
  1005.                 add_js_polyline(js_include_file,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1006.             }
  1007.             else
  1008.             if( strcmp(draw_type,"segments") == 0 ){
  1009.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1010.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  1011.                 if(reply_format == 0){reply_format = 11;}
  1012.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1013.                 if(use_input_xy == 1){
  1014.                     add_input_segment(js_include_file,2);
  1015.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1016.                 }
  1017.                 add_js_segments(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1018.             }
  1019.             else
  1020.             if( strcmp(draw_type,"circle") == 0 ){
  1021.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1022.                 if(reply_format == 0){reply_format = 10;}
  1023.                 /* 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n in x/y-range */
  1024.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1025.                 if(use_input_xy == 1){
  1026.                     add_input_circle(js_include_file,2,1);
  1027.                     add_input_xyr(js_include_file,canvas_root_id);
  1028.                 }
  1029.                 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]);
  1030.             }
  1031.             else
  1032.             if( strcmp(draw_type,"circles") == 0 ){
  1033.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1034.                 if(reply_format == 0){reply_format = 10;}
  1035.                 /* 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n in x/y-range */
  1036.                 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]);
  1037.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1038.                 if(use_input_xy == 1){
  1039.                     add_input_circle(js_include_file,2,2);
  1040.                     add_input_xyr(js_include_file,canvas_root_id);
  1041.                 }
  1042.             }
  1043.             else
  1044.             if(strcmp(draw_type,"crosshair") == 0 ){
  1045.                 if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1046.                 if(reply_format == 0){reply_format = 8;}
  1047.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1048.                 add_js_crosshairs(js_include_file,1,draw_type,line_width,crosshair_size ,stroke_color,stroke_opacity);
  1049.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1050.                 if(use_input_xy == 1){
  1051.                     add_input_crosshair(js_include_file,1);
  1052.                     add_input_xy(js_include_file,canvas_root_id);
  1053.                 }
  1054.             }
  1055.             else
  1056.             if(strcmp(draw_type,"crosshairs") == 0 ){
  1057.                 if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1058.                 if(reply_format == 0){reply_format = 8;}
  1059.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1060.                 add_js_crosshairs(js_include_file,2,draw_type,line_width,crosshair_size ,stroke_color,stroke_opacity);
  1061.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1062.                 if(use_input_xy == 1){
  1063.                     add_input_crosshair(js_include_file,2);
  1064.                     add_input_xy(js_include_file,canvas_root_id);
  1065.                 }
  1066.             }
  1067.             else
  1068.             if(strcmp(draw_type,"freehandline") == 0 ){
  1069.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1070.                 if(reply_format == 0){reply_format = 6;}
  1071.                 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]);  
  1072.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1073.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1074.             }
  1075.             else
  1076.             if(strcmp(draw_type,"freehandlines") == 0 ){
  1077.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1078.                 if(reply_format == 0){reply_format = 6;}
  1079.                 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]);  
  1080.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1081.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1082.             }
  1083.             else
  1084.             if(strcmp(draw_type,"path") == 0 ){
  1085.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1086.                 if(reply_format == 0){reply_format = 6;}
  1087.                 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]);  
  1088.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1089.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1090.             }
  1091.             else
  1092.             if(strcmp(draw_type,"paths") == 0 ){
  1093.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1094.                 if(reply_format == 0){reply_format = 6;}
  1095.                 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]);  
  1096.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1097.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1098.             }
  1099.             else
  1100.             if(strcmp(draw_type,"arrows") == 0 ){
  1101.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1102.                 if(reply_format == 0){reply_format = 11;}
  1103.                 add_js_arrows(js_include_file,2,draw_type,line_width,1,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1104.                 if(use_input_xy == 1){
  1105.                     add_input_arrow(js_include_file,2);
  1106.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1107.                 }
  1108.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1109.             }
  1110.             else
  1111.             if(strcmp(draw_type,"arrows2") == 0 ){
  1112.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1113.                 if(reply_format == 0){reply_format = 11;}
  1114.                 add_js_arrows(js_include_file,2,draw_type,line_width,2,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1115.                 if(use_input_xy == 1){
  1116.                     add_input_arrow(js_include_file,1);
  1117.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1118.                 }
  1119.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1120.             }
  1121.             else
  1122.             if(strcmp(draw_type,"arrow2") == 0 ){
  1123.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1124.                 if(reply_format == 0){reply_format = 11;}
  1125.                 add_js_arrows(js_include_file,1,draw_type,line_width,2,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1126.                 if(use_input_xy == 1){
  1127.                     add_input_arrow(js_include_file,1);
  1128.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1129.                 }
  1130.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1131.             }
  1132.             else
  1133.             if(strcmp(draw_type,"arrow") == 0 ){
  1134.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1135.                 if(reply_format == 0){reply_format = 11;}
  1136.                 add_js_arrows(js_include_file,1,draw_type,line_width,1,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1137.                 if(use_input_xy == 1){
  1138.                     add_input_arrow(js_include_file,1);
  1139.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1140.                 }
  1141.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1142.             }
  1143.             else
  1144.             if(strcmp(draw_type,"polygon") == 0){
  1145.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1146.                 if(reply_format == 0){reply_format = 2;}
  1147.                 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]);
  1148.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1149.                 if(use_input_xy == 2){
  1150.                   add_textarea_polygon(js_include_file);
  1151.                   add_textarea_xy(js_include_file,canvas_root_id);
  1152.                 }
  1153.             }
  1154.             else
  1155.             if(strncmp(draw_type,"poly",4) == 0){
  1156.                 if(strlen(draw_type) < 5){canvas_error("use command \"userdraw poly[3-9],color\" eg userdraw poly6,blue");}
  1157.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1158.                 if(reply_format == 0){reply_format = 2;}
  1159.                 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]);
  1160.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1161.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1162.             }
  1163.             else
  1164.             if(strcmp(draw_type,"triangle") == 0){
  1165.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1166.                 if(reply_format == 0){reply_format = 2;}
  1167.                 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]);
  1168.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1169.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1170.             }
  1171.             else
  1172.             if( strcmp(draw_type,"hline") == 0 ){
  1173.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1174.                 if(reply_format == 0){reply_format = 11;}
  1175.                 add_js_hlines(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1176.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1177.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1178.             }
  1179.             else
  1180.             if( strcmp(draw_type,"hlines") == 0 ){
  1181.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1182.                 if(reply_format == 0){reply_format = 11;}
  1183.                 add_js_hlines(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1184.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1185.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1186.             }
  1187.             else
  1188.             if( strcmp(draw_type,"vline") == 0 ){
  1189.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1190.                 if(reply_format == 0){reply_format = 11;}
  1191.                 add_js_hlines(js_include_file,3,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1192.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1193.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1194.             }
  1195.             else
  1196.             if( strcmp(draw_type,"vlines") == 0 ){
  1197.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1198.                 if(reply_format == 0){reply_format = 11;}
  1199.                 add_js_hlines(js_include_file,4,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1200.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1201.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1202.             }
  1203.             else
  1204.             if( strcmp(draw_type,"line") == 0 ){
  1205.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1206.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1207.                 if(reply_format == 0){reply_format = 11;}
  1208.                 add_js_lines(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1209.                 if( use_input_xy == 1 ){
  1210.                     add_input_line(js_include_file,1);
  1211.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1212.                 }
  1213.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1214.             }
  1215.             else
  1216.             if( strcmp(draw_type,"lines") == 0 ){
  1217.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1218.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1219.                 if(reply_format == 0){reply_format = 11;}
  1220.                 add_js_lines(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1221.                 if( use_input_xy == 1 ){
  1222.                     add_input_line(js_include_file,2);
  1223.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1224.                 }
  1225.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1226.             }
  1227.             else
  1228.             if( strcmp(draw_type,"rects") == 0){
  1229.                 if( js_function[DRAW_RECTS] != 1 ){ js_function[DRAW_RECTS] = 1;}
  1230.                 if(reply_format == 0){reply_format = 2;}
  1231.                 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]);
  1232.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1233.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1234.             }
  1235.             else
  1236.             if( strcmp(draw_type,"roundrects") == 0){
  1237.                 if( js_function[DRAW_ROUNDRECTS] != 1 ){ js_function[DRAW_ROUNDRECTS] = 1;}
  1238.                 if(reply_format == 0){reply_format = 2;}
  1239.                 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]);
  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,"rect") == 0){
  1245.                 if( js_function[DRAW_RECTS] != 1 ){ js_function[DRAW_RECTS] = 1;}
  1246.                 if(reply_format == 0){reply_format = 2;}
  1247.                 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]);
  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,"roundrect") == 0){
  1253.                 if( js_function[DRAW_ROUNDRECTS] != 1 ){ js_function[DRAW_ROUNDRECTS] = 1;}
  1254.                 if(reply_format == 0){reply_format = 2;}
  1255.                 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]);
  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,"arcs") == 0){
  1261.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  1262.                 if(reply_format == 0){reply_format = 25;}
  1263.                 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]);
  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,"arc") == 0){
  1269.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  1270.                 if(reply_format == 0){reply_format = 25;}
  1271.                 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]);
  1272.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1273.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1274.             }
  1275.             else
  1276.             if( strcmp(draw_type,"text") == 0){
  1277.                 if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}      
  1278.                 if(reply_format == 0){reply_format = 17;}
  1279.                 add_js_text(js_include_file,canvas_root_id,font_size,font_family,font_color,stroke_opacity);
  1280.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1281.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1282.             }
  1283.             else
  1284.             {
  1285.                 canvas_error("unknown drawtype or typo? ");
  1286.             }
  1287.             reset();
  1288.         break;
  1289.         case PLOTSTEPS:
  1290.             /*
  1291.              @ plotsteps a_number
  1292.              @ default 150
  1293.              @ use with care !
  1294.             */
  1295.             plot_steps = (int) (get_real(infile,1));
  1296.             break;
  1297.         case FONTSIZE:
  1298.         /*
  1299.          @fontsize font_size
  1300.          @default value 12
  1301.         */
  1302.             font_size = (int) (get_real(infile,1));
  1303.             break;
  1304.         case FONTCOLOR:
  1305.         /*
  1306.          @fontcolor color
  1307.          @color: hexcolor or colorname
  1308.          @default: black
  1309.          @example usage: x/y-axis text
  1310.         */
  1311.             font_color = get_color(infile,1);
  1312.             break;
  1313.         case ANIMATE:
  1314.         /*
  1315.          @animate type
  1316.          @type may be "point" (nothing else , yet...)
  1317.          @the point is a filled rectangle ; adjust colour with command 'fillcolor colorname/hexnumber'
  1318.          @will animate a point on the next plot/curve command
  1319.          @the curve will not be draw
  1320.          @moves repeatedly from xmin to xmax
  1321.         */
  1322.             if( strstr(get_string(infile,1),"point") != 0 ){animation_type = 15;}else{canvas_error("the only animation type (for now) is \"point\"...");}
  1323.             break;
  1324.         case LEVELCURVE:
  1325.         /*
  1326.         @levelcurve color,expression in x/y,l1,l2,...
  1327.         @draws very primitive level curves for expression, with levels l1,l2,l3,...,l_n
  1328.         @the quality is <b>not to be compared</b> with the Flydraw levelcurve. <br />(choose flydraw if you want quality...)
  1329.         @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
  1330.         @note : the arrays for holding the javascript data are limited in size
  1331.         @note : reduce image size if javascript data arrays get overloaded<br />(command 'plotsteps int' will not control the data size of the plot...)
  1332.         */
  1333.             fill_color = get_color(infile,0);
  1334.             char *fun1 = get_string_argument(infile,0);
  1335.             if( strlen(fun1) == 0 ){canvas_error("function is NOT OK !");}
  1336.             i = 0;
  1337.             done = FALSE;
  1338.             while( !done ){
  1339.              double_data[i] = get_real(infile,1);
  1340.              i++;
  1341.             }
  1342.             for(c = 0 ; c < i; c++){
  1343.              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);
  1344.              click_cnt++;
  1345.             }
  1346.             reset();
  1347.             break;
  1348.         case TRACE_JSCURVE:
  1349.         /*
  1350.          @trace_jscurve some_math_function
  1351.          @will use a crosshair to trace the jsmath curve
  1352.          @two inputfields will display the current x/y-values (numerical evaluation by javascript)
  1353.          @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  
  1354.          @use linewidth,strokecolor,crosshairsize to adjust the corsshair.
  1355.          @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...
  1356.         */
  1357.             if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1358.             if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1359.             if( use_js_math == FALSE){
  1360.                 add_to_js_math(js_include_file);
  1361.                 use_js_math = TRUE;
  1362.             }
  1363.             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);
  1364.             break;
  1365.         case JSMATH:
  1366.         /*
  1367.             @jsmath some_math_function
  1368.             @will calculate an y-value from a userinput x-value and draws a crosshair on these coordinates.
  1369.             @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  
  1370.             @example: jsmath sin(x^2)
  1371.             @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...
  1372.         */
  1373.             if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1374.             if( use_js_math == FALSE){
  1375.                 add_to_js_math(js_include_file);
  1376.                 use_js_math = TRUE;
  1377.             }
  1378.             add_calc_y(js_include_file,canvas_root_id,get_string(infile,1));
  1379.             break;
  1380.         case JSCURVE:
  1381.         /*
  1382.          @jscurve color,formula(x)
  1383.          @your function will be plotted by the javascript engine of the client browser.
  1384.          @use only basic math in your curve:<br /> sqrt,^,asin,acos,atan,log,pi,abs,sin,cos,tan,e
  1385.          @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...
  1386.          @Attention : last "precision" command in the canvasdraw script determines the calculation precision of the javascript curve plot !
  1387.          @no validity check is done by wims.
  1388.          @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
  1389.          @use command 'trace_jscurve formula(x)` for tracing
  1390.          @use commmand 'jsmath  formula(x)` for calculating and displaying indiviual points on the curve
  1391.          @can not be set draggable / onclick (yet)
  1392.          @commands plotjump / plotstep are not active for 'jscurve'
  1393.         */
  1394.             stroke_color = get_color(infile,0);
  1395.             if( use_js_math == FALSE){/* add this stuff only once...*/
  1396.                 add_to_js_math(js_include_file);
  1397.                 use_js_math = TRUE;
  1398.             }
  1399.             if( use_js_plot == FALSE){
  1400.                 use_js_plot = TRUE;
  1401.                 add_jsplot(js_include_file,canvas_root_id); /* this plots the function on JSPLOT_CANVAS */
  1402.             }
  1403.             temp = get_string_argument(infile,1);
  1404.             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]);
  1405.             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1406.             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]);
  1407.             add_to_buffer(tmp_buffer);
  1408.             use_js_plot++; /* we need to create multiple canvasses, so we may zoom and pan ?? */
  1409.  
  1410.         break;
  1411.         case CURVE:
  1412.         /*
  1413.          @curve color,formula(x)
  1414.          @plot color,formula(x)
  1415.          @use command trange before command curve / plot  (trange -pi,pi)<br />curve color,formula1(t),formula2(t)
  1416.          @use command "precision" to increase the number of digits of the plotted points
  1417.          @use command "plotsteps" to increase / decrease the amount of plotted points (default 150)
  1418.          @may be set draggable / onclick
  1419.         */
  1420.             if( use_parametric == TRUE ){ /* parametric color,fun1(t),fun2(t)*/
  1421.                 use_parametric = FALSE;
  1422.                 stroke_color = get_color(infile,0);
  1423.                 char *fun1 = get_string_argument(infile,0);
  1424.                 char *fun2 = get_string_argument(infile,1);
  1425.                 if( strlen(fun1) == 0 || strlen(fun2) == 0 ){canvas_error("parametric functions are NOT OK !");}
  1426.                 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);
  1427.                 click_cnt++;
  1428.             }
  1429.             else
  1430.             {
  1431.                 stroke_color = get_color(infile,0);
  1432.                 char *fun1 = get_string_argument(infile,1);
  1433.                 if( strlen(fun1) == 0 ){canvas_error("function is NOT OK !");} 
  1434.                 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);
  1435.                 click_cnt++;
  1436.             }
  1437.             animation_type = 9;/* reset to curve plotting without animation */
  1438.             reset();
  1439.             break;
  1440.         case FLY_TEXT:
  1441.         /*
  1442.         @ text fontcolor,x,y,font,text_string
  1443.         @ font may be described by keywords : giant,huge,normal,small,tiny
  1444.         @ use command 'fontsize' to increase base fontsize for these keywords
  1445.         @ may be set "onclick" or "drag xy"
  1446.         @ backwards compatible with flydraw
  1447.         @ unicode supported: text red,0,0,huge,\\u2232
  1448.         @ use command 'string' combined with 'fontfamily' for a more fine grained control over html5 canvas text element
  1449.         @ 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.
  1450.         */
  1451.             for(i = 0; i < 5 ;i++){
  1452.                 switch(i){
  1453.                     case 0: stroke_color = get_color(infile,0);break;/* font_color == stroke_color name or hex color */
  1454.                     case 1: double_data[0] = get_real(infile,0);break; /* x */
  1455.                     case 2: double_data[1] = get_real(infile,0);break; /* y */
  1456.                     case 3: fly_font = get_string_argument(infile,0);
  1457.                             if(strcmp(fly_font,"giant") == 0){
  1458.                                 font_size = (int)(font_size + 24);
  1459.                             }
  1460.                             else
  1461.                             {
  1462.                                 if(strcmp(fly_font,"huge") == 0){
  1463.                                     font_size = (int)(font_size + 14);
  1464.                                 }
  1465.                                 else
  1466.                                 {
  1467.                                     if(strcmp(fly_font,"large") == 0){
  1468.                                         font_size = (int)(font_size + 6);
  1469.                                         }
  1470.                                         else
  1471.                                         {
  1472.                                             if(strcmp(fly_font,"small") == 0){
  1473.                                                 font_size = (int)(font_size - 4);
  1474.                                                 if(font_size<0){font_size = 8;}
  1475.                                         }
  1476.                                     }
  1477.                                 }
  1478.                             }
  1479.                             break; /* font_size ! */
  1480.                     case 4:
  1481.                         temp = get_string_argument(infile,1);
  1482.                         decimals = find_number_of_digits(precision);
  1483.                         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);
  1484.                         click_cnt++;reset();break;
  1485.                     default:break;
  1486.                 }
  1487.             }
  1488.             break;
  1489.         case FLY_TEXTUP:
  1490.         /*
  1491.          @ textup fontcolor,x,y,font,text_string
  1492.          @ can <b>not</b> be set "onclick" or "drag xy" (because of translaton matrix...mouse incompatible)
  1493.          @ font may be described by keywords : giant,huge,normal,small,tiny
  1494.          @ use command 'fontsize' to increase base fontsize for the keywords
  1495.          @ backwards compatible with flydraw
  1496.          @ unicode supported: textup red,0,0,huge,\\u2232
  1497.          @ use command 'stringup' and 'fontfamily' for a more fine grained control over html5 canvas text element
  1498.          @ 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.
  1499.         */
  1500.             if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}  
  1501.             for(i = 0; i<5 ;i++){
  1502.                 switch(i){
  1503.                     case 0: font_color = get_color(infile,0);break;/* name or hex color */
  1504.                     case 1: int_data[0] = x2px(get_real(infile,0));break; /* x */
  1505.                     case 2: int_data[1] = y2px(get_real(infile,0));break; /* y */
  1506.                     case 3: fly_font = get_string_argument(infile,0);
  1507.                             if(strcmp(fly_font,"giant") == 0){
  1508.                                 font_size = (int)(font_size + 24);
  1509.                             }
  1510.                             else
  1511.                             {
  1512.                                 if(strcmp(fly_font,"huge") == 0){
  1513.                                     font_size = (int)(font_size + 14);
  1514.                                 }
  1515.                                 else
  1516.                                 {
  1517.                                     if(strcmp(fly_font,"large") == 0){
  1518.                                         font_size = (int)(font_size + 6);
  1519.                                         }
  1520.                                         else
  1521.                                         {
  1522.                                             if(strcmp(fly_font,"small") == 0){
  1523.                                                 font_size = (int)(font_size - 4);
  1524.                                                 if(font_size<0){font_size = 8;}
  1525.                                         }
  1526.                                     }
  1527.                                 }
  1528.                             }
  1529.                             break; /* font_size ! */
  1530.                     case 4:
  1531.                     decimals = find_number_of_digits(precision);
  1532.                     temp = get_string_argument(infile,1);
  1533.                     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);
  1534.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1535.                     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);
  1536.                     add_to_buffer(tmp_buffer);
  1537.                     break;
  1538.                     default:break;
  1539.                 }
  1540.             }
  1541.             reset();
  1542.             break;
  1543.         case FONTFAMILY:
  1544.         /*
  1545.          @ fontfamily font_description
  1546.          @ set the font family; for browsers that support it
  1547.          @ font_description: Ariel ,Courier, Helvetica etc
  1548.          @ 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
  1549.          @ use correct syntax : 'font style' 'font size'px 'fontfamily'
  1550.         */
  1551.             font_family = get_string(infile,1);
  1552.             break;
  1553.         case STRINGUP:
  1554.         /*
  1555.          @ stringup color,x,y,rotation_degrees,the text string
  1556.          @ can <b>not</b> be set "onclick" or "drag xy" (because of translaton matrix...mouse incompatible)
  1557.          @ unicode supported: stringup red,0,0,45,\\u2232
  1558.          @ use a command like 'fontfamily bold 34px Courier' <br />to set fonts on browser that support font change
  1559.  
  1560.         */
  1561.             if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}   /* can not be added to shape library : rotate / mouse issues */
  1562.             for(i=0;i<6;i++){
  1563.                 switch(i){
  1564.                     case 0: font_color = get_color(infile,0);break;/* name or hex color */
  1565.                     case 1: int_data[0] = x2px(get_real(infile,0));break; /* x */
  1566.                     case 2: int_data[1] = y2px(get_real(infile,0));break; /* y */
  1567.                     case 3: double_data[0] = get_real(infile,0);break;/* rotation */
  1568.                     case 4: decimals = find_number_of_digits(precision);
  1569.                             temp = get_string_argument(infile,1);
  1570.                             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);
  1571.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1572.                             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);
  1573.                             add_to_buffer(tmp_buffer);
  1574.                             break;
  1575.                     default:break;
  1576.                 }
  1577.             }
  1578.             reset();
  1579.             break;
  1580.         case STRING:
  1581.         /*
  1582.          @ string color,x,y,the text string
  1583.          @ may be set "onclick" or "drag xy"
  1584.          @ unicode supported: string red,0,0,\\u2232
  1585.          @ use a command like 'fontfamily italic 24px Ariel' <br />to set fonts on browser that support font change
  1586.         */
  1587.             for(i=0;i<5;i++){
  1588.                 switch(i){
  1589.                     case 0: stroke_color = get_color(infile,0);break;/* name or hex color */
  1590.                     case 1: double_data[0] = get_real(infile,0);break; /* x in xrange*/
  1591.                     case 2: double_data[1] = get_real(infile,0);break; /* y in yrange*/
  1592.                     case 3: decimals = find_number_of_digits(precision);
  1593.                         temp = get_string_argument(infile,1);
  1594.                         decimals = find_number_of_digits(precision);
  1595.                         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);
  1596.                         click_cnt++;reset();break;
  1597.                     default:break;
  1598.                 }
  1599.             }
  1600.             break;
  1601.         case CENTERSTRING:
  1602.         /*
  1603.          @ centerstring color,y-value,the text string
  1604.          @ title color,y-value,the text string
  1605.          @ draw a string centered on the canvas at y = y-value
  1606.          @ can not set "onclick" or "drag xy" (...)
  1607.          @ unicode supported: centerstring red,5,\\u2232
  1608.          @ use a command like 'fontfamily italic 24px Ariel' <br />to set fonts on browser that support font change
  1609.         */
  1610.             if( js_function[DRAW_CENTERSTRING] != 1 ){ js_function[DRAW_CENTERSTRING] = 1;}
  1611.             for(i=0;i<3;i++){
  1612.                 switch(i){
  1613.                     case 0: stroke_color = get_color(infile,0);break;/* name or hex color */
  1614.                     case 1: double_data[0] = get_real(infile,0);break; /* y in xrange*/
  1615.                     case 2: temp = get_string_argument(infile,1);
  1616.                             /* draw_text = function(canvas_type,y,font_family,stroke_color,stroke_opacity,text) */
  1617.                             decimals = find_number_of_digits(precision);
  1618.                             string_length = snprintf(NULL,0,
  1619.                             "draw_centerstring(%d,%.*f,\"%s\",\"%s\",%.2f,\"%s\");\n",canvas_root_id,decimals,double_data[0],font_family,stroke_color,stroke_opacity,temp);
  1620.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1621.                             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);
  1622.                             add_to_buffer(tmp_buffer);
  1623.                             break;
  1624.                     default:break;
  1625.                 }
  1626.             }
  1627.             break;
  1628.         case MATHML:
  1629.         /*
  1630.         @ mathml x1,y1,x2,y2,mathml_string
  1631.         @ mathml will be displayed in a rectangle left top (x1:y1) , right bottom (x2:y2)
  1632.         @ can be set onclick <br />(however dragging is not supported)<br />javascript:read_dragdrop(); will return click number of mathml-object
  1633.         @ 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();"
  1634.         @ 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....
  1635.        
  1636.         */
  1637.             if( js_function[DRAW_XML] != 1 ){ js_function[DRAW_XML] = 1;}
  1638.             for(i=0;i<5;i++){
  1639.                 switch(i){
  1640.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in x/y-range coord system -> pixel width */
  1641.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in x/y-range coord system  -> pixel height */
  1642.                     case 2: int_data[2]=x2px(get_real(infile,0)) - int_data[0];break; /* width in x/y-range coord system -> pixel width */
  1643.                     case 3: int_data[3]=y2px(get_real(infile,0)) - int_data[1];break; /* height in x/y-range coord system  -> pixel height */
  1644.                     case 4: decimals = find_number_of_digits(precision);
  1645.                             if(onclick == 1 ){ onclick = click_cnt;click_cnt++;}
  1646.                             temp = get_string(infile,1);
  1647.                             if( strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\"","'"); }
  1648.                             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);
  1649.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1650.                             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);
  1651.                             add_to_buffer(tmp_buffer);
  1652.                             /*
  1653.                              in case inputs are present , trigger adding the read_mathml()
  1654.                              if no other reply_format is defined
  1655.                              note: all other reply types will include a reading of elements with id='mathml'+p)
  1656.                              */
  1657.                             if(strstr(temp,"mathml0") != NULL){
  1658.                              if(reply_format == 0 ){reply_format = 16;} /* no other reply type is defined */
  1659.                             }
  1660.                             break;
  1661.                     default:break;
  1662.                 }
  1663.             }
  1664.             reset();
  1665.             break;
  1666.         case HTTP:
  1667.         /*
  1668.          @http x1,y1,x2,y2,http://some_adress.com
  1669.          @an active html-page will be displayed in an "iframe" rectangle left top (x1:y1) , right bottom (x2:y2)
  1670.          @do not use interactivity (or mouse) if the mouse needs to be active in the iframe
  1671.          @can not be 'set onclick' or 'drag xy'
  1672.         */
  1673.             if( js_function[DRAW_HTTP] != 1 ){ js_function[DRAW_HTTP] = 1;}    
  1674.             for(i=0;i<5;i++){
  1675.                 switch(i){
  1676.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in x/y-range coord system -> pixel width */
  1677.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in x/y-range coord system  -> pixel height */
  1678.                     case 2: int_data[2]=x2px(get_real(infile,0)) - int_data[0];break; /* width in x/y-range coord system -> pixel width */
  1679.                     case 3: int_data[3]=y2px(get_real(infile,0)) - int_data[1];break; /* height in x/y-range coord system  -> pixel height */
  1680.                     case 4: decimals = find_number_of_digits(precision);
  1681.                             temp = get_string(infile,1);
  1682.                             if(strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\"","'");}
  1683.                             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);
  1684.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1685.                             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);
  1686.                             add_to_buffer(tmp_buffer);
  1687.                     break;
  1688.                 }
  1689.             }
  1690.             reset();
  1691.             break;
  1692.         case HTML:
  1693.         /*
  1694.          @ html x1,y1,x2,y2,html_string
  1695.          @ all tags are allowed
  1696.          @ can be set onclick <br />(dragging not supported)<br />javascript:read_dragdrop(); will return click number of mathml-object
  1697.          @ 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.
  1698.          
  1699.          note: uses the same code as 'mathml'
  1700.         */
  1701.             break;
  1702.         case X_AXIS_STRINGS:
  1703.         /*
  1704.          @ xaxis num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1705.          @ xaxistext num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1706.          @ use these x-axis values in stead of default xmin...xmax
  1707.          @ use command "fontcolor", "fontsize" , "fontfamily" to adjust font <br />defaults: black,12,Ariel
  1708.          @ if the 'x-axis words' are to big amd will overlap, a simple alternating offset will be applied
  1709.          @ 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
  1710.          @ 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
  1711.         */
  1712.             temp = get_string(infile,1);
  1713.             if( strstr(temp,":") != 0 ){ temp = str_replace(temp,":","\",\"");}
  1714.             if( strstr(temp,"pi") != 0 ){ temp = str_replace(temp,"pi","(3.1415927)");}/* we need to replace pi for javascript y-value*/
  1715.             fprintf(js_include_file,"x_strings = [\"%s\"];\n ",temp);
  1716.             use_axis_numbering = 1;
  1717.             break;
  1718.         case Y_AXIS_STRINGS:
  1719.         /*
  1720.          @ yaxis num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1721.          @ yaxistext num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1722.          @ use command "fontcolor", "fontsize" , "fontfamily" to adjust font <br />defaults: black,12,Ariel
  1723.          @ use these y-axis values in stead of default ymin...ymax
  1724.          @ 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
  1725.         */
  1726.             temp = get_string(infile,1);
  1727.             if( strstr(temp,":") != 0 ){ temp = str_replace(temp,":","\",\"");}
  1728.             if( strstr(temp,"pi") != 0 ){ temp = str_replace(temp,"pi","(3.1415927)");}/* we need to replace pi for javascript y-value*/
  1729.             fprintf(js_include_file,"y_strings = [\"%s\"];\n ",temp);
  1730.             use_axis_numbering = 1;
  1731.             break;
  1732.          
  1733.         case AXIS_NUMBERING:
  1734.         /*
  1735.             @ axisnumbering
  1736.             @ keyword, no arguments required
  1737.         */
  1738.             use_axis_numbering = 1;
  1739.             break;
  1740.         case AXIS:
  1741.         /*
  1742.             @ axis
  1743.             @ keyword, no arguments required
  1744.  
  1745.         */
  1746.             use_axis = TRUE;
  1747.             break;
  1748.         case KILLSLIDER:
  1749.         /*
  1750.          @ killslider
  1751.          @ keyword, no arguments required
  1752.          @ ends grouping of object under a preciously defined slider
  1753.         */
  1754.             slider = 0;
  1755.             break;
  1756.         case SLIDER:
  1757.         /*
  1758.         @ slider start_value,end_value,width px,height px,type,label
  1759.         @ type: xy,x,y,angle
  1760.         @ use commmand 'slider' before draggable/clickable objects.
  1761.         @ 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'
  1762.         @ amount of sliders is not limited.
  1763.         @ javascript:read_dragdrop(); will return an array with 'object_number:slider_value'
  1764.         @ type=angle: for all objects in radians<br />except command 'arc', which should be in degrees !
  1765.         @ type=xy: will produce a 2D 'slider' [rectangle width x heigh px] in your web page
  1766.         @ every draggable object may have it's own slider (no limit in amount of sliders)
  1767.         @ label: some slider text
  1768.         @ use fillcolor for slider ball
  1769.         @ use strokecolor for slider bar
  1770.         @ use fontfamily / fontcolor to set used fonts
  1771.         @ use opacity (only fill opacity will be used) to set transparency
  1772.         @ the slider will be draw in the 'tooltip div' : so incompatible with command tooltip ; setlimits etc
  1773.         */
  1774.             for(i=0; i<6 ; i++){
  1775.                 switch(i){
  1776.                     case 0: double_data[0] = get_real(infile,0);break; /* start value */
  1777.                     case 1: double_data[1] = get_real(infile,0);break; /* end value */
  1778.                     case 2: int_data[0] = (int)(get_real(infile,0));break; /* width */
  1779.                     case 3: int_data[1] = (int)(get_real(infile,0));break; /* height */
  1780.                     case 4: temp = get_string_argument(infile,0); /* type : x,y,angle */
  1781.                     if(strstr(temp,"xy")!= NULL){
  1782.                      slider = 4;
  1783.                     }
  1784.                     else
  1785.                     {
  1786.                      if(strstr(temp,"x") != NULL){
  1787.                       slider = 1;
  1788.                      }
  1789.                      else
  1790.                      {
  1791.                       if(strstr(temp,"y") != NULL){
  1792.                        slider = 2;
  1793.                       }
  1794.                       else
  1795.                       {
  1796.                        if(strstr(temp,"angle") != NULL){
  1797.                         slider = 3;
  1798.                        }
  1799.                        else
  1800.                        {
  1801.                         canvas_error("slider types may be : x , y , xy , angle");
  1802.                        }                     
  1803.                       }
  1804.                      }
  1805.                     }
  1806.                     break;
  1807.                     case 5: /* some string used for slider description  */
  1808.                     slider_cnt++;
  1809.                     if(slider == 4){
  1810.                      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);
  1811.                     }else{
  1812.                      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);
  1813.                     }
  1814.                     break;
  1815.                 }
  1816.              }
  1817.             break;
  1818.         case SGRAPH:
  1819.         /*
  1820.          @ sgraph xstart,ystart,xmajor,ymajor,xminor,yminor,majorgrid_color,minorgrid_color
  1821.          @ primitive implementation of a 'broken scale' graph...
  1822.          @ 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 />
  1823.          @ 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
  1824.         */
  1825.             if( js_function[DRAW_SGRAPH] != 1 ){ js_function[DRAW_SGRAPH] = 1;}
  1826.             for(i = 0 ; i < 8 ;i++){
  1827.                 switch(i){
  1828.                     case 0:double_data[0] = get_real(infile,0);break;
  1829.                     case 1:double_data[1] = get_real(infile,0);break;
  1830.                     case 2:double_data[2] = get_real(infile,0);break;
  1831.                     case 3:double_data[3] = get_real(infile,0);break;
  1832.                     case 4:int_data[0] = (int)(get_real(infile,0));break;
  1833.                     case 5:int_data[1] = (int)(get_real(infile,0));break;
  1834.                     case 6:stroke_color = get_color(infile,0);break;
  1835.                     case 7:font_color = get_color(infile,1);
  1836.                     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);
  1837.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1838.                     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);
  1839.                     add_to_buffer(tmp_buffer);
  1840.                     break;
  1841.                     default:break;
  1842.                 }
  1843.             }
  1844.             /* sgraph(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily,opacity)*/
  1845.             break;
  1846.         case GRID:/* xmajor,ymajor,color [,xminor,yminor,tick length (px) ,color]*/
  1847.         /*
  1848.          @ grid step_x,step_y,gridcolor
  1849.          @ use command "fontcolor", "fontsize" , "fontfamily" to adjust font <br />defaults: black,12,Ariel
  1850.          @ 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
  1851.          @ 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)
  1852.          @ can not be set "onclick" or "drag xy"
  1853.          @ 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')
  1854.          @ 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')
  1855.          @ 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')
  1856.         */
  1857.             if( js_function[DRAW_YLOGSCALE] == 1 ){canvas_error("only one grid type is allowed...");}
  1858.             if( js_function[DRAW_GRID] != 1 ){ js_function[DRAW_GRID] = 1;}
  1859.             for(i=0;i<4;i++){
  1860.                 switch(i){
  1861.                     case 0:double_data[0] = get_real(infile,0);break;/* xmajor */
  1862.                     case 1:double_data[1] = get_real(infile,0);break;/* ymajor */
  1863.                     case 2:
  1864.                     if( use_axis == TRUE ){
  1865.                         stroke_color = get_color(infile,0);
  1866.                         done = FALSE;
  1867.                         int_data[0] = (int) (get_real(infile,0));/* xminor */
  1868.                         int_data[1] = (int) (get_real(infile,0));/* yminor */
  1869.                         int_data[2] = (int) (get_real(infile,0));/* tic_length */
  1870.                         fill_color = get_color(infile,1); /* used as axis_color*/
  1871.                     }
  1872.                     else
  1873.                     {
  1874.                         int_data[0] = 1;
  1875.                         int_data[1] = 1;
  1876.                         stroke_color = get_color(infile,1);
  1877.                         fill_color = stroke_color;
  1878.                     }
  1879.                     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 !");}
  1880.                     /* set snap_x snap_y values in pixels */
  1881.                     fprintf(js_include_file,"snap_x = %f;snap_y = %f;",double_data[0] / int_data[0],double_data[1] / int_data[1]);
  1882.                     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);
  1883.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1884.                     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);
  1885.                     add_to_buffer(tmp_buffer);
  1886.                     break;
  1887.                 }
  1888.             }
  1889.             reset();
  1890.             break;
  1891.         case OPACITY:
  1892.         /*
  1893.         @ opacity 0-255,0-255
  1894.         @
  1895.         */
  1896.             for(i = 0 ; i<2;i++){
  1897.                 switch(i){
  1898.                     case 0: double_data[0]=(int)(get_real(infile,0));break;
  1899.                     case 1: double_data[1]=(int)(get_real(infile,1));break;
  1900.                     default: break;
  1901.                 }
  1902.             }
  1903.             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 ? */
  1904.             stroke_opacity = (double) (0.0039215*double_data[0]);/* 0.0 - 1.0 */
  1905.             fill_opacity = (double) (0.0039215*double_data[1]);/* 0.0 - 1.0 */
  1906.             break;
  1907.         case ROTATE:
  1908.         /*
  1909.          @rotate rotation_angle
  1910.          @angle in degrees
  1911.         */
  1912.             use_rotate = TRUE;
  1913.             angle = -1*(get_real(infile,1));/* -1 : to be compatible with Flydraw... */
  1914.             break;
  1915.         case KILLAFFINE:
  1916.         /*
  1917.         @ killaffine
  1918.         @ keyword : resets the transformation matrix to 1,0,0,1,0,0
  1919.         */
  1920.             use_affine = FALSE;
  1921.             snprintf(affine_matrix,14,"[1,0,0,1,0,0]");    
  1922.             break;
  1923.         case AFFINE:
  1924.         /*
  1925.          @affine a,b,c,d,tx,ty
  1926.          @ defines a transformation matrix for subsequent objects
  1927.          @ use keyword 'killaffine' to end the transformation
  1928.          @ note 1: only 'draggable' / 'noclick' objects can be transformed.
  1929.          @ note 2: do not use 'onclick' or 'drag xy' with tranformation objects : the mouse coordinates do not get transformed (yet)
  1930.          @ note 3: no matrix operations on the transformation matrix implemented (yet)
  1931.          @ a : Scales the drawings horizontally
  1932.          @ b : Skews the drawings horizontally
  1933.          @ c : Skews the drawings vertically
  1934.          @ d : Scales the drawings vertically
  1935.          @ tx: Moves the drawings horizontally in xrange coordinate system
  1936.          @ ty: Moves the drawings vertically in yrange coordinate system
  1937.          @ the data precision is 2 decimals (printf : %2.f)
  1938.         */
  1939.             for(i = 0 ; i<6;i++){
  1940.                 switch(i){
  1941.                     case 0: double_data[0] = get_real(infile,0);break;
  1942.                     case 1: double_data[1] = get_real(infile,0);break;
  1943.                     case 2: double_data[2] = get_real(infile,0);break;
  1944.                     case 3: double_data[3] = get_real(infile,0);break;
  1945.                     case 4: double_data[4] = get_real(infile,0);break;
  1946.                     case 5: double_data[5] = get_real(infile,1);
  1947.                         use_affine = TRUE;
  1948.                         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));
  1949.                         check_string_length(string_length);affine_matrix = my_newmem(string_length+1);
  1950.                         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));    
  1951.                         break;
  1952.                     default: break;
  1953.                 }
  1954.             }
  1955.         break;
  1956.         case KILLTRANSLATION:
  1957.         /*
  1958.          killtranslation
  1959.         */
  1960.             use_affine = FALSE;
  1961.             snprintf(affine_matrix,14,"[1,0,0,1,0,0]");    
  1962.             break;
  1963.         case TRANSLATION:
  1964.         /*
  1965.          @translation tx,ty
  1966.          @will translate the next object tx in xrange and ty in yrange
  1967.          @uase command 'killtranstation' to end the command
  1968.         */
  1969.             for(i = 0 ; i<2;i++){
  1970.                 switch(i){
  1971.                     case 0: double_data[0] = get_real(infile,0);break;
  1972.                     case 1: double_data[1] = get_real(infile,1);
  1973.                         use_affine = TRUE;
  1974.                         string_length = snprintf(NULL,0, "[1,0,0,1,%.2f,%.2f] ",double_data[0]*xsize/(xmax - xmin),-1*double_data[1]*ysize/(ymax - ymin));
  1975.                         check_string_length(string_length);affine_matrix = my_newmem(string_length+1);
  1976.                         snprintf(affine_matrix,string_length,"[1,0,0,1,%.2f,%.2f] ",double_data[0]*xsize/(xmax - xmin),-1*double_data[1]*ysize/(ymax - ymin));
  1977.                         break;
  1978.                     default: break;
  1979.                 }
  1980.             }
  1981.         break;
  1982.  
  1983.         case DASHED:
  1984.         /*
  1985.         @ keyword "dashed"
  1986.         @ next object will be drawn with a dashed line
  1987.         @ change dashing scheme by using command "dashtype int,int)
  1988.         */
  1989.             use_dashed = TRUE;
  1990.             break;
  1991.         case FILLED:
  1992.         /*
  1993.         @ keyword "filled"
  1994.         @ the next 'fillable' object (only) will be filled
  1995.         @ use command "fillcolor color" to set fillcolor
  1996.         @ use command "opacity 0-255,0-255" to set stroke and fill-opacity
  1997.         @ 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 !
  1998.         */
  1999.             use_filled = TRUE;
  2000.             break;
  2001.         case STYLE:
  2002.         /*
  2003.          @highlight color,opacity,linewidth
  2004.          @ NOT IMPLEMENTED
  2005.          @ use command "onclick" : when the object receives a userclick it will increase it's linewidth
  2006.         */
  2007.             break;
  2008.         case FILLCOLOR:
  2009.         /*
  2010.         @ fillcolor colorname or #hex
  2011.         @ Set the color for a filled object : mainly used for command 'userdraw obj,stroke_color'
  2012.         @ All fillable massive object will have a fillcolor == strokecolor (just to be compatible with flydraw...)
  2013.         */
  2014.             fill_color = get_color(infile,1);
  2015.             break;
  2016.         case STROKECOLOR:
  2017.         /*
  2018.         @ strokecolor colorname or #hex
  2019.         @ to be used for commands that do not supply a color argument (like command 'linegraph')
  2020.         */
  2021.             stroke_color = get_color(infile,1);
  2022.             break;
  2023.         case BGIMAGE:
  2024.         /*
  2025.          @bgimage image_location
  2026.          @use an image as background .<br />(we use the background of 'canvas_div' )
  2027.          @the background image will be resized to match "width = xsize" and "height = ysize"
  2028.         */
  2029.         URL = get_string(infile,1);
  2030.         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);
  2031.             break;
  2032.         case BGCOLOR:
  2033.         /*
  2034.          @bgcolor colorname or #hex
  2035.          @use this color as background of the "div" containing the canvas(es)
  2036.         */
  2037.         /* [255,255,255]*/
  2038.             bgcolor = get_string(infile,1);
  2039.             if(strstr(bgcolor,"#") == NULL){ /* convert colorname -> #ff00ff */
  2040.                 int found = 0;
  2041.                 for( i = 0; i < NUMBER_OF_COLORNAMES ; i++ ){
  2042.                     if( strcmp( colors[i].name , bgcolor ) == 0 ){
  2043.                         bgcolor = colors[i].hex;
  2044.                         found = 1;
  2045.                         break;
  2046.                     }
  2047.                 }
  2048.                 if(found == 0){canvas_error("your bgcolor is not in my rgb.txt data list : use hexcolor...something like #a0ffc4");}
  2049.             }
  2050.             fprintf(js_include_file,"<!-- set background color of canvas div -->\ncanvas_div.style.backgroundColor = \"%s\";canvas_div.style.opacity = %f;\n",bgcolor,fill_opacity);
  2051.             break;
  2052.         case COPY:
  2053.         /*
  2054.         @ copy x,y,x1,y1,x2,y2,[filename URL]
  2055.         @ Insert the region from (x1,y1) to (x2,y2) (in pixels) of [filename] to (x,y) in x/y-range
  2056.         @ If x1=y1=x2=y2=-1, the whole [filename URL] is copied.
  2057.         @ [filename] is the URL of the image   
  2058.         @ URL is normal URL of network reachable image file location<br />(eg special url for 'classexo' not -yet- implemented)
  2059.         @ 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
  2060.         @ if you want to draw / userdraw  on an "imported" image, make sure it is transparent.<br />for example GNUPlot: set terminal gif transparent
  2061.  
  2062.         context.drawImage(img,sx,sy,swidth,sheight,x,y,width,height);
  2063.         draw_external_image(canvas_type,URL,sx,sy,swidth,sheight,x,y,width,height,drag_drop){
  2064.         */
  2065.             for(i = 0 ; i<7;i++){
  2066.                 switch(i){
  2067.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x left top corner in x/y range  */
  2068.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y left top corner in x/y range */
  2069.                     case 2: int_data[2]=(int)(get_real(infile,0));break;/* x1 in px of external image */
  2070.                     case 3: int_data[3]=(int)(get_real(infile,0));break;/* y1 in px of external image */
  2071.                     case 4: int_data[4]=(int)(get_real(infile,0));break;/* x2 --> width  */
  2072.                     case 5: int_data[5]=(int)(get_real(infile,0)) ;break;/* y2 --> height */
  2073.                     case 6: URL = get_string(infile,1);
  2074.                             int_data[6] = int_data[4] - int_data[2];/* swidth & width (if not scaling )*/
  2075.                             int_data[7] = int_data[5] - int_data[3];/* sheight & height (if not scaling )*/
  2076.                             if( drag_type > -1 ){
  2077.                                 if( js_function[DRAG_EXTERNAL_IMAGE] != 1 ){ js_function[DRAG_EXTERNAL_IMAGE] = 1;}
  2078.                                 if(reply_format == 0 ){reply_format = 20;}
  2079.                                 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);
  2080.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2081.                                 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);                       
  2082.                                 drag_type = -1;
  2083.                                 ext_img_cnt++;
  2084.                             }
  2085.                             else
  2086.                             {
  2087.                                 if( js_function[DRAW_EXTERNAL_IMAGE] != 1 ){ js_function[DRAW_EXTERNAL_IMAGE] = 1;}
  2088.                                 /*
  2089.                                 draw_external_image = function(URL,sx,sy,swidth,sheight,x0,y0,width,height,draggable){\n\
  2090.                                 */
  2091.                                 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]);
  2092.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2093.                                 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]);
  2094.                             }
  2095.                             add_to_buffer(tmp_buffer);
  2096.                             break;
  2097.                     default: break;
  2098.                 }
  2099.             }
  2100.             reset();
  2101.             break;
  2102. /*
  2103. context.drawImage(img,sx,sy,swidth,sheight,x,y,width,height);
  2104. img     Specifies the image, canvas, or video element to use
  2105. sx      The x coordinate where to start clipping : x1 = int_data[0]
  2106. sy      The y coordinate where to start clipping : x2 = int_data[1]
  2107. swidth  The width of the clipped image : int_data[2] - int_data[0]
  2108. sheight The height of the clipped image : int_data[3] - int_data[1]
  2109. x       The x coordinate where to place the image on the canvas : dx1 = int_data[4]
  2110. y       The y coordinate where to place the image on the canvas : dy1 = int_data[5]
  2111. width   The width of the image to use (stretch or reduce the image) : dx2 - dx1 = int_data[6]
  2112. height  The height of the image to use (stretch or reduce the image) : dy2 - dy1 = int_data[7]
  2113. */
  2114.         case COPYRESIZED:
  2115.         /*
  2116.         @ copyresized x1,y2,x2,y2,dx1,dy1,dx2,dy2,image_file_url
  2117.         @ 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
  2118.         @ If x1=y1=x2=y2=-1, the whole [filename / URL ] is copied and resized.
  2119.         @ URL is normal URL of network reachable image file location<br />(eg special url for 'classexo' not -yet- implemented)
  2120.         @ 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
  2121.         @ if you want to draw / userdraw  on an "imported" image, make sure it is transparent.<br />for example GNUPlot: set terminal gif transparent
  2122.         */
  2123.             for(i = 0 ; i<9;i++){
  2124.                 switch(i){
  2125.                     case 0: int_data[0] = (int)(get_real(infile,0));break; /* x1 */
  2126.                     case 1: int_data[1] = (int)(get_real(infile,0));break; /* y1 */
  2127.                     case 2: int_data[2] = (int)(get_real(infile,0));break;/* x2 */
  2128.                     case 3: int_data[3] = (int)(get_real(infile,0));break;/* y2 */
  2129.                     case 4: int_data[4] = x2px(get_real(infile,0));break;/* dx1 */
  2130.                     case 5: int_data[5] = y2px(get_real(infile,0));break;/* dy1 */
  2131.                     case 6: int_data[6] = x2px(get_real(infile,0));break;/* dx2 */
  2132.                     case 7: int_data[7] = y2px(get_real(infile,0));break;/* dy2 */
  2133.                     case 8: URL = get_string(infile,1);
  2134.                             if( drag_type > -1 ){
  2135.                                 if( js_function[DRAG_EXTERNAL_IMAGE] != 1 ){ js_function[DRAG_EXTERNAL_IMAGE] = 1;}
  2136.                                 if(reply_format == 0 ){reply_format = 20;}
  2137.                                 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);
  2138.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2139.                                 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);
  2140.                                 drag_type = -1;
  2141.                                 ext_img_cnt++;
  2142.                             }
  2143.                             else
  2144.                             {
  2145.                                 if( js_function[DRAW_EXTERNAL_IMAGE] != 1 ){ js_function[DRAW_EXTERNAL_IMAGE] = 1;}
  2146.                                 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]);
  2147.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2148.                                 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]);
  2149.                             }
  2150.                             add_to_buffer(tmp_buffer);
  2151.                     default: break;
  2152.                 }
  2153.             }
  2154.             reset();
  2155.             break;
  2156.         case BUTTON:
  2157.         /*
  2158.          button x,y,value
  2159.         */
  2160.         break;
  2161.         case INPUTSTYLE:
  2162.         /*
  2163.         @ inputstyle style_description
  2164.         @ example: inputstyle color:blue;font-weight:bold;font-style:italic;font-size:16pt
  2165.         */
  2166.             input_style = get_string(infile,1);
  2167.             break;
  2168.         case INPUT:
  2169.         /*
  2170.          @ input x,y,size,editable,value
  2171.          @ to set inputfield "readonly", use editable = 0
  2172.          @ only active inputfields (editable = 1) will be read with read_canvas();
  2173.          @ if "$status=done"  (e.g. in answer.phtml) the inputfield will be clearedand set readonly<br />Override this by keyword 'status'
  2174.          @ may be further controlled by "inputstyle" (inputcss is not yet implemented...)
  2175.          @ if mathml inputfields are present and / or some userdraw is performed, these data will NOT be send as well (javascript:read_canvas();)
  2176.         */
  2177.         if( js_function[DRAW_INPUTS] != 1 ){ js_function[DRAW_INPUTS] = 1;}    
  2178.             for(i = 0 ; i<5;i++){
  2179.                 switch(i){
  2180.                     case 0: int_data[0]=x2px(get_real(infile,0));break;/* x in px */
  2181.                     case 1: int_data[1]=y2px(get_real(infile,0));break;/* y in px */
  2182.                     case 2: int_data[2]=abs( (int)(get_real(infile,0)));break; /* size */
  2183.                     case 3: if( get_real(infile,1) >0){int_data[3] = 1;}else{int_data[3] = 0;};break; /* readonly */
  2184.                     case 4:
  2185.                             temp = get_string_argument(infile,1);
  2186.                             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);
  2187.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2188.                             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);
  2189.                             add_to_buffer(tmp_buffer);
  2190.                             input_cnt++;break;
  2191.                     default: break;
  2192.                 }
  2193.             }
  2194.             if(reply_format == 0 ){reply_format = 15;}
  2195.             reset();
  2196.             break;
  2197.         case TEXTAREA:
  2198.         /*
  2199.          @ textarea x,y,cols,rows,readonly,value
  2200.          @ may be further controlled by "inputstyle"
  2201.          @ if "$status=done"  (e.g. in answer.phtml) the inputfield will be clearedand set readonly<br />Override this by keyword 'status'
  2202.          @ if mathml inputfields are present and / or some userdraw is performed, these data will NOT be send as well (javascript:read_canvas();)
  2203.         */
  2204.             if( js_function[DRAW_TEXTAREAS] != 1 ){ js_function[DRAW_TEXTAREAS] = 1;}  
  2205.             for(i = 0 ; i<6;i++){
  2206.                 switch(i){
  2207.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in px */
  2208.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in px */
  2209.                     case 2: int_data[2]=abs( (int)(get_real(infile,0)));break;/* cols */
  2210.                     case 3: int_data[3]=abs( (int)(get_real(infile,0)));break;/* rows */
  2211.                     case 4: if( get_real(infile,1) >0){int_data[4] = 1;}else{int_data[3] = 0;};break; /* readonly */
  2212.                     case 5: temp = get_string_argument(infile,1);
  2213.                             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);
  2214.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2215.                             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);
  2216.                             add_to_buffer(tmp_buffer);
  2217.                             input_cnt++;break;
  2218.                     default: break;
  2219.                 }
  2220.             }
  2221.             if(reply_format == 0 ){reply_format = 15;}
  2222.             reset();
  2223.             break;
  2224.         case MOUSE_PRECISION:
  2225.         /*
  2226.             @ precision int
  2227.             @ 1 = no decimals ; 10 = 1 decimal ; 100 = 2 decimals etc
  2228.             @ may be used / changed before every object
  2229.             @ In case of user interaction (like 'userdraw') this value will be used to determine the amount of decimals in the reply / answer
  2230.         */
  2231.             precision = (int) (get_real(infile,1));
  2232.             if(precision < 1 ){precision = 1;};
  2233.             break;
  2234.         case SETLIMITS:
  2235.         /*
  2236.             @setlimits
  2237.             @keyword : if set, it will produce 4 inputfields for 'xmin,xmax,ymin,ymax' and an 'ok' button
  2238.             @may be used for inputfield based zooming / panning
  2239.             @use command xlabel / ylabel to change text from xmin to 'xlabel'min etc
  2240.             @note:the input value will not be checked on validity
  2241.         */
  2242.             if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  2243.             add_setlimits(js_include_file,canvas_root_id);
  2244.             /* add_setlimits provides 'fprintf(js_include_file,"use_pan_and_zoom = 1;");' */
  2245.             use_pan_and_zoom = TRUE;
  2246.             done = TRUE;
  2247.             break;
  2248.         case ZOOM:
  2249.         /*
  2250.          @ zoom button_color
  2251.          @ introduce a controlpanel at the lower right corner
  2252.          @ 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
  2253.          @ the 'x' symbol will do a 'location.reload' of the page, and thus reset all canvas drawings.
  2254.          @ choose an appropriate colour, so the small 'x,arrows,-,+' are clearly visible
  2255.          @ command 'opacity' may be used to set stroke_opacity of 'buttons
  2256.          @ NOTE: use command 'zoom' at the end of your script code (the same is true for commanmd 'mouse')
  2257.          @ NOTE: only objects that may be set draggable / clickable will be zoomed / panned
  2258.          @ 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 !!
  2259.         */
  2260.             fprintf(js_include_file,"use_pan_and_zoom = 1;");
  2261.             use_pan_and_zoom = TRUE;
  2262.             stroke_color = get_color(infile,1);
  2263.             /* we use BG_CANVAS (0) */
  2264.             add_zoom_buttons(js_include_file,canvas_root_id,stroke_color,stroke_opacity);
  2265.             done = TRUE;
  2266.             break;
  2267.         case ONCLICK:
  2268.         /*
  2269.          @ onclick
  2270.          @ keyword, no arguments
  2271.          @ if the next object is clicked, it's 'object sequence number' in fly script is returned <br /> by javascript:read_canvas();
  2272.          @ Line based object will show an increase in linewidth<br />Font based objects will show the text in 'bold' when clicked.
  2273.          @ NOTE: not all objects may be set clickable
  2274.         */
  2275.            
  2276.             onclick = 1;
  2277.             break;
  2278.         case DRAG:
  2279.         /*
  2280.          @ drag [x][y][xy]
  2281.          @ the next object will be draggable in x / y / xy direction
  2282.          @ the displacement can be read by 'javascript:read_dragdrop();'
  2283.          @ 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' !
  2284.          @ 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)
  2285.          @ use keywordd 'snaptogrid' , 'xsnaptogrid' or 'ysnaptogrid' to switch from free to discrete movement
  2286.          @ 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.
  2287.          @ 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 !!
  2288.         */
  2289.             temp = get_string(infile,1);
  2290.             if(strstr(temp,"xy") != NULL ){
  2291.                 drag_type = 0;
  2292.             }
  2293.             else
  2294.             {
  2295.                 if(strstr(temp,"x") != NULL ){
  2296.                     drag_type = 1;
  2297.                 }
  2298.                 else
  2299.                 {
  2300.                     drag_type = 2;
  2301.                 }
  2302.             }
  2303.             fprintf(js_include_file,"var dragdrop_precision = %d;",precision);
  2304.             onclick = 2;
  2305.             /* if(use_userdraw == TRUE ){canvas_error("\"drag & drop\" may not be combined with \"userdraw\" or \"pan and zoom\" \n");} */
  2306.             break;
  2307.         case BLINK:
  2308.         /*
  2309.          @ blink time(seconds)
  2310.          @ NOT IMPLEMETED -YET
  2311.         */
  2312.             break;
  2313.         case XUNIT:
  2314.         /*
  2315.          @ xunit some_unit_for_x-values
  2316.          @ unicode allowed (no html code)
  2317.          @ use together with command mousex
  2318.          @ will display the cursor x-coordinate 'unit'
  2319.         */
  2320.             fprintf(js_include_file,"unit_x = \"%s\";",get_string(infile,1));
  2321.             break;
  2322.         case YUNIT:
  2323.         /*
  2324.          @ yunit some_unit_for_y-values
  2325.          @ unicode allowed (no html code)
  2326.          @ use together with command mousex
  2327.          @ will display the cursor y-coordinate 'unit'
  2328.         */
  2329.             fprintf(js_include_file,"unit_y = \"%s\";",get_string(infile,1));
  2330.             break;
  2331.         case MOUSE_DISPLAY:
  2332.         /*
  2333.          @display x|y|xy|degree,color,fontsize
  2334.          @will display the mouse cursor coordinates as x-only,y-only,(x:y) or the angle in degrees<br />(angle between x-axis;(0:0);(x:y)
  2335.          @just like commands 'mouse','mousex','mousey','mouse_degree'...only other name)
  2336.         */
  2337.         temp = get_string_argument(infile,0);
  2338.         if(strstr(temp,"degree") != NULL){
  2339.             int_data[0] = 3;
  2340.         }else{
  2341.             if( strstr(temp,"xy") != NULL ){
  2342.                 int_data[0] = 2;
  2343.             }else{
  2344.                 if( strstr(temp,"y") != NULL ){
  2345.                     int_data[0] = 1;
  2346.                 }else{
  2347.                     if( strstr(temp,"x") != NULL ){
  2348.                         int_data[0] = 0;
  2349.                     }else{
  2350.                         int_data[0] = 2;
  2351.                     }  
  2352.                 }
  2353.             }
  2354.         }      
  2355.         stroke_color = get_color(infile,0);
  2356.         font_size = (int) (get_real(infile,1));
  2357.         tmp_buffer = my_newmem(26);
  2358.         snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2359.         add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,int_data[0]);
  2360.         break;
  2361.         case MOUSE_DEGREE:
  2362.         /*
  2363.          @ mouse_degree color,fontsize
  2364.          @ 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
  2365.          @ The angle is positive in QI and QIII and the angle value is negative in QII and QIV
  2366.          @ NOTE: use command 'mouse' at the end of your script code (the same is true for command 'zoom')
  2367.  
  2368.         */
  2369.             stroke_color = get_color(infile,0);
  2370.             font_size = (int) (get_real(infile,1));
  2371.             tmp_buffer = my_newmem(26);
  2372.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2373.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,3);
  2374.             break;
  2375.         case MOUSEX:
  2376.         /*
  2377.          @ mousex color,fontsize
  2378.          @ will display the cursor x-coordinate in 'color' and 'font size'<br /> using default fontfamily Ariel
  2379.          @ NOTE: use command 'mouse' at the end of your script code (the same is true for command 'zoom')
  2380.  
  2381.         */
  2382.             stroke_color = get_color(infile,0);
  2383.             font_size = (int) (get_real(infile,1));
  2384.             tmp_buffer = my_newmem(26);
  2385.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2386.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,0);
  2387.             break;
  2388.         case MOUSEY:
  2389.         /*
  2390.          @ mousey color,fontsize
  2391.          @ will display the cursor y-coordinate in 'color' and 'font size'<br /> using default fontfamily Ariel
  2392.          @ NOTE: use command 'mouse' at the end of your script code (the same is true for command 'zoom')
  2393.  
  2394.         */
  2395.             stroke_color = get_color(infile,0);
  2396.             font_size = (int) (get_real(infile,1));
  2397.             tmp_buffer = my_newmem(26);
  2398.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2399.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,1);
  2400.             break;
  2401.         case MOUSE:
  2402.         /*
  2403.          @ mouse color,fontsize
  2404.          @ will display the cursor (x:y) coordinates  in 'color' and 'font size'<br /> using default fontfamily Ariel
  2405.          @ NOTE: use command 'mouse' at the end of your script code (the same is true for commanmd 'zoom')
  2406.  
  2407.         */
  2408.             stroke_color = get_color(infile,0);
  2409.             font_size = (int) (get_real(infile,1));
  2410.             tmp_buffer = my_newmem(26);
  2411.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2412.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,2);
  2413.             break;
  2414.         case INTOOLTIP:
  2415.             /*
  2416.             @ intooltip link_text
  2417.             @ link_text is a single line (span-element)
  2418.             @ link_text may also be an image URL http://some_server/images/my_image.png
  2419.             @ link_text may contain HTML markup
  2420.             @ the canvas will be displayed in a tooltip on 'link_text'
  2421.             @ the canvas is default transparent: use command 'bgcolor color' to adjust background-color<br />the link test will alos be shown with this bgcolor.
  2422.             */
  2423.             if(use_input_xy != FALSE ){canvas_error("intooltip can not be combined with userinput_xy command");}
  2424.             use_tooltip = TRUE;
  2425.             tooltip_text = get_string(infile,1);
  2426.             if(strstr(tooltip_text,"\"") != 0 ){ tooltip_text = str_replace(tooltip_text,"\"","'"); }
  2427.             break;
  2428.         case AUDIO:
  2429.         /*
  2430.         @ audio x,y,w,h,loop,visible,audiofile location
  2431.         @ x,y : left top corner of audio element (in xrange / yrange)
  2432.         @ w,y : width and height in pixels
  2433.         @ loop : 0 or 1 ( 1 = loop audio fragment)
  2434.         @ visible : 0 or 1 (1 = show controls)
  2435.         @ audio format may be in *.mp3 or *.ogg
  2436.         @ If you are using *.mp3 : be aware that FireFox will not (never) play this ! (Pattented format)
  2437.         @ if you are using *.ogg : be aware that Microsoft based systems not support it natively
  2438.         @ To avoid problems supply both types (mp3 and ogg) of audiofiles.<br />the program will use both as source tag
  2439.         @ 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 />
  2440.         */
  2441.             if( js_function[DRAW_AUDIO] != 1 ){ js_function[DRAW_AUDIO] = 1;}
  2442.             for(i=0;i<7;i++){
  2443.                 switch(i){
  2444.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x in x/y-range coord system -> pixel */
  2445.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y in x/y-range coord system  -> pixel */
  2446.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* pixel width */
  2447.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* height pixel height */
  2448.                     case 4: int_data[4] = (int) (get_real(infile,0)); if(int_data[4] != TRUE){int_data[4] = FALSE;} break; /* loop boolean */
  2449.                     case 5: int_data[5] = (int) (get_real(infile,0)); if(int_data[5] != TRUE){int_data[5] = FALSE;} break; /* visible boolean */
  2450.                     case 6:
  2451.                     temp = get_string(infile,1);
  2452.                     if( strstr(temp,".mp3") != 0 ){ temp = str_replace(temp,".mp3","");}
  2453.                     if( strstr(temp,".ogg") != 0 ){ temp = str_replace(temp,".ogg","");}
  2454.                     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);
  2455.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2456.                     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);
  2457.                     add_to_buffer(tmp_buffer);
  2458.                     break;
  2459.                     default:break;
  2460.                 }
  2461.             }
  2462.             reset();
  2463.             break;
  2464.         case VIDEO:
  2465.         /*
  2466.         @ video x,y,w,h,videofile location
  2467.         @ x,y : left top corner of audio element (in xrange / yrange)
  2468.         @ w,y : width and height in pixels
  2469.         @ example:<br />wims getfile : video 0,0,120,120,myvideo.mp4
  2470.         @ video format may be in *.mp4 (todo:other formats)
  2471.         */
  2472.             if( js_function[DRAW_VIDEO] != 1 ){ js_function[DRAW_VIDEO] = 1;}
  2473.             for(i=0;i<5;i++){
  2474.                 switch(i){
  2475.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x in x/y-range coord system -> pixel */
  2476.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y in x/y-range coord system  -> pixel */
  2477.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* pixel width */
  2478.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* height pixel height */
  2479.                     case 4: temp = get_string(infile,1);
  2480.                             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);
  2481.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2482.                             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);
  2483.                             add_to_buffer(tmp_buffer);
  2484.                             break;
  2485.                     default:break;
  2486.                 }
  2487.             }
  2488.             reset();
  2489.             break;
  2490.         case HATCHFILL:
  2491.         /*
  2492.         @ hatchfill x0,y0,dx,dy,color
  2493.         @ x0,y0 in xrange / yrange
  2494.         @ distances dx,dy in pixels
  2495.         */
  2496.             if( js_function[DRAW_HATCHFILL] != 1 ){ js_function[DRAW_HATCHFILL] = 1;}
  2497.             for(i=0;i<5;i++){
  2498.                 switch(i){
  2499.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2500.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2501.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2502.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2503.                     case 4: stroke_color = get_color(infile,1);
  2504.                     /* draw_hatchfill(ctx,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize) */
  2505.                     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);
  2506.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2507.                     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);
  2508.                     add_to_buffer(tmp_buffer);
  2509.                     break;
  2510.                     default:break;
  2511.                 }
  2512.             }
  2513.             reset();
  2514.         break;
  2515.         case DIAMONDFILL:
  2516.         /*
  2517.         @ diamondfill x0,y0,dx,dy,color
  2518.         @ x0,y0 in xrange / yrange
  2519.         @ distances dx,dy in pixels
  2520.         */
  2521.             if( js_function[DRAW_DIAMONDFILL] != 1 ){ js_function[DRAW_DIAMONDFILL] = 1;}
  2522.             for(i=0;i<5;i++){
  2523.                 switch(i){
  2524.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2525.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2526.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2527.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2528.                     case 4: stroke_color = get_color(infile,1);
  2529.                     /* draw_hatchfill(ctx,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize) */
  2530.                     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);
  2531.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2532.                     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);
  2533.                     add_to_buffer(tmp_buffer);
  2534.                     break;
  2535.                     default:break;
  2536.                 }
  2537.             }
  2538.             reset();
  2539.         break;
  2540.         case GRIDFILL:
  2541.         /*
  2542.         @ gridfill x0,y0,dx,dy,color
  2543.         @ x0,y0 in xrange / yrange
  2544.         @ distances dx,dy in pixels
  2545.         @ a draggable object may snap_to_grid (using keywords xysnaptogrid,xsnaprogrid, ysnaptogrid)
  2546.         @ userdraw object may snap_to_grid
  2547.         */
  2548.             if( js_function[DRAW_GRIDFILL] != 1 ){ js_function[DRAW_GRIDFILL] = 1;}
  2549.             for(i=0;i<5;i++){
  2550.                 switch(i){
  2551.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2552.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2553.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2554.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2555.                     case 4: stroke_color = get_color(infile,1);
  2556.                     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);
  2557.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2558.                     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);
  2559.                     add_to_buffer(tmp_buffer);
  2560.                     break;
  2561.                     default:break;
  2562.                 }
  2563.             }
  2564.             reset();
  2565.         break;
  2566.         case DOTFILL:
  2567.         /*
  2568.         @ dotfill x0,y0,dx,dy,color
  2569.         @ x0,y0 in xrange / yrange
  2570.         @ distances dx,dy in pixels
  2571.         @ radius of dots is linewidth
  2572.         */
  2573.             if( js_function[DRAW_DOTFILL] != 1 ){ js_function[DRAW_DOTFILL] = 1;}
  2574.             for(i=0;i<5;i++){
  2575.                 switch(i){
  2576.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2577.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2578.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2579.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2580.                     case 4: stroke_color = get_color(infile,1);
  2581.                     /* draw_dotfill(ctx,x0,y0,dx,dy,radius,color,opacity,xsize,ysize) */
  2582.                     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);
  2583.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2584.                     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);
  2585.                     add_to_buffer(tmp_buffer);
  2586.                     break;
  2587.                     default:break;
  2588.                 }
  2589.             }
  2590.             reset();
  2591.         break;
  2592.         case IMAGEFILL:
  2593.         /*
  2594.         @ imagefill dx,dy,image_url
  2595.         @ The next suitable <b>filled object</b> will be filled with "image_url" tiled
  2596.         @ After pattern filling ,the fill-color should be reset !
  2597.         @ wims getins / image from class directory : imagefill 80,80,my_image.gif
  2598.         @ normal url : imagefill 80,80,$module_dir/gifs/my_image.gif
  2599.         @ normal url : imagefill 80,80,http://adres/a/b/c/my_image.jpg
  2600.         @ if dx,dy is larger than the image, the whole image will be background to the next object.
  2601.         */
  2602.             if( js_function[DRAW_IMAGEFILL] != 1 ){ js_function[DRAW_IMAGEFILL] = 1;}
  2603.             for(i=0 ;i < 3 ; i++){
  2604.                 switch(i){
  2605.                     case 0:int_data[0] = (int) (get_real(infile,0));break;
  2606.                     case 1:int_data[1] = (int) (get_real(infile,0));break;
  2607.                     case 2: URL = get_string_argument(infile,1);
  2608.                             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);
  2609.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2610.                             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);
  2611.                             add_to_buffer(tmp_buffer);
  2612.                     break;
  2613.                 }
  2614.             }
  2615.             reset();
  2616.         break;
  2617.         case FILLTOBORDER:
  2618.         /*
  2619.         @ filltoborder x,y,bordercolor,color
  2620.         @ fill the region  of point (x:y) bounded by 'bordercolor' with color 'color'
  2621.         @ any other color will not act as border to the bucket fill
  2622.         @ use this command  after all boundary objects are declared.
  2623.         @ 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..
  2624.         */
  2625.             for(i=0 ;i < 4 ; i++){
  2626.                 switch(i){
  2627.                     case 0:double_data[0] = get_real(infile,0);break;
  2628.                     case 1:double_data[1] = get_real(infile,0);break;
  2629.                     case 2:bgcolor = get_color(infile,0);break;
  2630.                     case 3:fill_color = get_color(infile,1);
  2631.                            if(js_function[DRAW_FILLTOBORDER] != 1 ){/* use only once */
  2632.                                 js_function[DRAW_FILLTOBORDER] = 1;
  2633.                                 add_js_filltoborder(js_include_file,canvas_root_id);
  2634.                            }
  2635.                            decimals = find_number_of_digits(precision);
  2636.                            /* we need to set a timeout: the canvas is not yet draw in memory? when floodfill is called directly... */
  2637.                            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));
  2638.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2639.                            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));
  2640.                            add_to_buffer(tmp_buffer);
  2641.                            break;
  2642.                     default:break;
  2643.                 }
  2644.             }
  2645.             reset();
  2646.         break;
  2647.         case FLOODFILL:
  2648.         /*
  2649.         @ floodfill x,y,color
  2650.         @ alternative syntax: fill x,y,color
  2651.         @ fill the region of point (x:y) with color 'color'
  2652.         @ any other color or size of picture (borders of picture) will act as border to the bucket fill
  2653.         @ use this command  after all boundary objects are declared.
  2654.         @ Use command 'clickfill,color' for user click driven flood fill.
  2655.         @ NOTE: recognised colour boundaries are in the "drag canvas" e.g. only for objects that can be set draggable / clickable
  2656.         @ 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..
  2657.         */
  2658.             for(i=0 ;i < 4 ; i++){
  2659.                 switch(i){
  2660.                     case 0:double_data[0] = get_real(infile,0);break;
  2661.                     case 1:double_data[1] = get_real(infile,0);break;
  2662.                     case 2:fill_color = get_color(infile,1);
  2663.                            if(js_function[DRAW_FLOODFILL] != 1 ){/* use only once */
  2664.                                 js_function[DRAW_FLOODFILL] = 1;
  2665.                                 add_js_floodfill(js_include_file,canvas_root_id);
  2666.                            }
  2667.                            decimals = find_number_of_digits(precision);/*floodfill(interaction,x,y,[R,G,B,A]) */
  2668.                            /* we need to set a timeout: the canvas is not yet draw in memory? when floodfill is called directly... */
  2669.                            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));
  2670.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2671.                            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));
  2672.                            add_to_buffer(tmp_buffer);
  2673.                            break;
  2674.                     default:break;
  2675.                 }
  2676.             }
  2677.             reset();
  2678.         break;
  2679.         case CLICKFILLMARGE:
  2680.             clickfillmarge = (int) (get_real(infile,1));
  2681.             break;
  2682.         /*
  2683.         @ clickfillmarge int
  2684.         @ default 20 (pixels)
  2685.         @ 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[])
  2686.         */
  2687.         case CLICKFILL:
  2688.         /*
  2689.         @ clickfill fillcolor
  2690.         @ user left mouse click will floodfill the area with fillcolor
  2691.         @ multiple areas may be coloured
  2692.         @ 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)
  2693.         @ the answer will be read as the (x:y) click coordinates per coloured area
  2694.         @ background color of main div may be set by using command "bgcolor color"
  2695.         @ may not be combined with command "userdraw"
  2696.         @ NOTE: recognised colour boundaries are in the "drag canvas" e.g. only for objects that can be set draggable / clickable
  2697.         */
  2698.          fill_color = get_color(infile,1);
  2699.          if(js_function[DRAW_FLOODFILL] != 1 ){/* use only once */
  2700.             js_function[DRAW_FLOODFILL] = 1;
  2701.             add_js_floodfill(js_include_file,canvas_root_id);
  2702.          }
  2703.          fprintf(js_include_file,"\n<!-- begin command clickfill -->\nvar marge_xy = %d;var userdraw_x = new Array();var 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));
  2704.          add_read_canvas(1,reply_precision);
  2705.          reset();
  2706.         break;
  2707.         case SETPIXEL:
  2708.         /*
  2709.         @ setpixel x,y,color
  2710.         @ A "point" with diameter 1 pixel centeres at (x:y) in xrange / yrange
  2711.         @ pixels can not be dragged or clicked
  2712.         @ "pixelsize = 1" may be changed by command "pixelsize int"
  2713.         */
  2714.             if( js_function[DRAW_PIXELS] != 1 ){ js_function[DRAW_PIXELS] = 1;}
  2715.             for(i=0;i<3;i++){
  2716.                 switch(i){
  2717.                     case 0: double_data[0] = get_real(infile,0); break; /* x */
  2718.                     case 1: double_data[1] = get_real(infile,0); break; /* y  */
  2719.                     case 2: stroke_color = get_color(infile,1);
  2720.                            string_length = snprintf(NULL,0,"draw_setpixel([%f],[%f],\"%s\",%.2f,%d);\n",double_data[0],double_data[1],stroke_color,stroke_opacity,pixelsize);
  2721.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2722.                            snprintf(tmp_buffer,string_length,"draw_setpixel([%f],[%f],\"%s\",%.2f,%d);\n",double_data[0],double_data[1],stroke_color,stroke_opacity,pixelsize);
  2723.                            add_to_buffer(tmp_buffer);
  2724.                            break;
  2725.                     default:break;
  2726.                 }
  2727.             }
  2728.             reset();
  2729.         break;
  2730.         case PIXELSIZE:
  2731.         /*
  2732.         @ pixelsize int
  2733.         @ in case you want to deviate from default pixelsize = 1...
  2734.         */
  2735.             pixelsize = (int) get_real(infile,1);
  2736.         break;
  2737.         case PIXELS:
  2738.         /*
  2739.         @ pixels color,x1,y1,x2,y2,x3,y3...
  2740.         @ Draw  "points" with diameter 1 pixel
  2741.         @ pixels can not be dragged or clicked
  2742.         @ "pixelsize = 1" may be changed by command "pixelsize int"
  2743.         */
  2744.             if( js_function[DRAW_PIXELS] != 1 ){ js_function[DRAW_PIXELS] = 1;}
  2745.             stroke_color=get_color(infile,0);
  2746.             i=0;
  2747.             c=0;
  2748.             while( ! done ){     /* get next item until EOL*/
  2749.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  2750.                 for( c = 0 ; c < 2; c++){
  2751.                     if(c == 0 ){
  2752.                         double_data[i] = get_real(infile,0);
  2753.                         i++;
  2754.                     }
  2755.                     else
  2756.                     {
  2757.                         double_data[i] = get_real(infile,1);
  2758.                         i++;
  2759.                     }
  2760.                 }
  2761.             }
  2762.             decimals = find_number_of_digits(precision);
  2763.             /*  *double_xy2js_array(double xy[],int len,int decimals) */
  2764.             string_length = snprintf(NULL,0,  "draw_setpixel(%s,\"%s\",%.2f,%d);\n",double_xy2js_array(double_data,i,decimals),stroke_color,stroke_opacity,pixelsize);
  2765.             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2766.             snprintf(tmp_buffer,string_length,"draw_setpixel(%s,\"%s\",%.2f,%d);\n",double_xy2js_array(double_data,i,decimals),stroke_color,stroke_opacity,pixelsize);
  2767.             add_to_buffer(tmp_buffer);
  2768.             reset();
  2769.             break;
  2770.         case REPLYFORMAT:
  2771.         /*
  2772.         @ replyformat number
  2773.         @ use number=-1 to deactivate the js-function read_canvas()
  2774.         @ default values should be fine !
  2775.         @ use command 'precision [0,1,10,100,1000,10000...]' before command 'replyformat' to set the desired number of decimals in the student reply / drawing
  2776.         @ the last value for 'precision int' will be used to calculate  the reply coordinates, if needed (read_canvas();)
  2777.         @ 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></ul>
  2778.         @ note to 'userdraw text,color' : the x / y-values are in pixels ! (this to avoid too lengthy calculations in javascript...)
  2779.         */
  2780.          reply_format = (int) get_real(infile,1);
  2781.          reply_precision = precision;
  2782.         break;
  2783.         case LEGENDCOLORS:
  2784.         /*
  2785.         @ legendcolors color1:color2:color3:...:color_n
  2786.         @ 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 />
  2787.         @ make sure the number of colours match the number of legend items
  2788.         @ command 'legend' in case of 'piechart' and 'barchart' will use these colours per default (no need to specify 'legendcolors'
  2789.         */
  2790.             if(legend_cnt == -1){canvas_error("use command \"legend\" before command \"legendcolors\" ! ");}
  2791.             temp = get_string(infile,1);
  2792.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  2793.             fprintf(js_include_file,"var legendcolors%d = [\"%s\"];",legend_cnt,temp);
  2794.             break;
  2795.         case LEGEND:
  2796.         /*
  2797.         @ legend string1:string2:string3....string_n
  2798.         @ will be used to create a legend for a graph
  2799.         @ also see command 'piechart'  
  2800.         @ will use the same colors per default as used in the graphs : use command 'legendcolors' to override the default
  2801.         */
  2802.             temp = get_string(infile,1);
  2803.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  2804.             legend_cnt++; /* attention :starts with -1 : it will be used in piechart etc */
  2805.             fprintf(js_include_file,"var legend%d = [\"%s\"];",legend_cnt,temp);
  2806.             break;
  2807.         case XLABEL:
  2808.         /*
  2809.         @ xlabel some_string
  2810.         @ will be used to create a label for the x-axis (label is in quadrant I)
  2811.         @ can only be used together with command 'grid'<br />not depending on keywords 'axis' and 'axisnumbering'
  2812.         @ font setting: italic Courier, fontsize will be slightly larger (fontsize + 4)
  2813.         */
  2814.             temp = get_string(infile,1);
  2815.             fprintf(js_include_file,"var xaxislabel = \"%s\";",temp);
  2816.             break;
  2817.         case YLABEL:
  2818.         /*
  2819.         @ ylabel some_string
  2820.         @ will be used to create a (vertical) label for the y-axis (label is in quadrant I)
  2821.         @ can only be used together with command 'grid'<br />not depending on keywords 'axis' and 'axisnumbering'
  2822.         @ font setting: italic Courier, fontsize will be slightly larger (fontsize + 4)
  2823.         */
  2824.             temp = get_string(infile,1);
  2825.             fprintf(js_include_file,"var yaxislabel = \"%s\";",temp);
  2826.             break;
  2827.         case LINEGRAPH: /* scheme: var linegraph_0 = [ 'stroke_color','line_width','use_dashed' ,'dashtype0','dashtype1','x1','y1',...,'x_n','y_n'];*/
  2828.         /*
  2829.         @ linegraph x1:y1;x2:y2...x_n:y_n
  2830.         @ will plot your data in a graph
  2831.         @ may only to be used together with command 'grid'
  2832.         @ can be used together with freestyle x-axis/y-axis texts : see commands 'xaxis' and 'yaxis'
  2833.         @ use command 'legend' to provide an optional legend in right-top-corner
  2834.         @ also see command 'piechart'
  2835.         @ multiple linegraphs may be used in a single plot
  2836.         @ NOTE: your arguments are not checked by canvasdraw : use your javascript console in case of trouble...
  2837.         @ <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>
  2838.         */    
  2839.             temp = get_string(infile,1);
  2840.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  2841.             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);
  2842.             linegraph_cnt++;
  2843.             reset();
  2844.             break;
  2845.         case BARCHART:
  2846.         /*
  2847.         @ barchart x_1:y_1:color_1:x_2:y_2:color_2:...x_n:y_n:color_n
  2848.         @ will be used to create a legend for bar graph
  2849.         @ may only to be used together with command 'grid'
  2850.         @ can be used together with freestyle x-axis/y-axis texts : see commands 'xaxis' and 'yaxis'
  2851.         @ use command 'legend' to provide an optional legend in right-top-corner
  2852.         @ also see command 'piechart'
  2853.         @ NOTE: your arguments are not checked by canvasdraw : use your javascript console in case of trouble...
  2854.         */
  2855.             temp = get_string(infile,1);
  2856.             if( strstr( temp,":" ) != 0 ){ temp = str_replace(temp,":","\",\""); }
  2857.             fprintf(js_include_file,"var barchart_%d = [\"%s\"];",barchart_cnt,temp);
  2858.             barchart_cnt++;
  2859.             reset();
  2860.             break;
  2861.         case CLOCK:
  2862.         /*
  2863.         @ clock x,y,r(px),H,M,S,type hourglass,interactive [ ,H_color,M_color,S_color,background_color,foreground_color ]
  2864.         @ use command 'opacity stroke-opacity,fill-opacity' to adjust foreground (stroke) and background (fill) transparency
  2865.         @ type hourglass:<br />type = 0 : only segments<br />type = 1 : only numbers<br />type = 2 : numbers and segments
  2866.         @ 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
  2867.         @ if you don't want a seconds hand (or minutes...), just make it invisible by using the background color of the hourglass...
  2868.         @ 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>
  2869.         @ canvasdraw will not check validity of colornames...the javascript console is your best friend
  2870.         @ no combinations with other reply_types allowed, for now
  2871.         @ 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
  2872.         */
  2873.             if( js_function[DRAW_CLOCK] != 1 ){ js_function[DRAW_CLOCK] = 1;}
  2874.  
  2875.         /*    var clock = function(xc,yc,radius,H,M,S,h_color,m_color,s_color,bg_color,fg_color) */
  2876.             for(i=0;i<9;i++){
  2877.              switch(i){
  2878.               case 0: int_data[0] = x2px(get_real(infile,0)); break; /* xc */
  2879.               case 1: int_data[1] = y2px(get_real(infile,0)); break; /* yc */
  2880.               case 2: int_data[2] = get_real(infile,0);break;/* radius in px */
  2881.               case 3: int_data[3] = get_real(infile,0);break;/* hours */
  2882.               case 4: int_data[4] = get_real(infile,0);break;/* minutes */
  2883.               case 5: int_data[5] = get_real(infile,0);break;/* seconds */
  2884.               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 */
  2885.               case 7: int_data[7] = (int)(get_real(infile,0));/* interactive 0,1,2*/
  2886.                 switch(int_data[7]){
  2887.                     case 0:break;
  2888.                     case 1:if(clock_cnt == 0){
  2889.                                 if( reply_format == 0 ){
  2890.                                      reply_format = 18; /* user sets clock */
  2891.                                     /* 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");
  2892.                                      check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2893.                                      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");
  2894.                                      add_to_buffer(tmp_buffer);
  2895.                                     */
  2896.                                      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 = 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");
  2897.                                 }
  2898.                                 else
  2899.                                 {
  2900.                                     canvas_error("interactive clock may not be used together with other reply_types...");
  2901.                                 }
  2902.                                 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);
  2903.                              }
  2904.                     break;
  2905.                     case 2:if( reply_format == 0 ){
  2906.                                 reply_format = 19; /* "onclick */
  2907.                                 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 = 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 = 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 ");
  2908.                             }
  2909.                             else
  2910.                             {
  2911.                                 if( reply_format != 19){
  2912.                                    canvas_error("clickable clock(s) may not be used together with other reply_types...");
  2913.                                  }
  2914.                             }
  2915.                      break;
  2916.                      default: canvas_error("interactive must be set 0,1 or 2");break;
  2917.                 }
  2918.                 break;
  2919.                 case 8:
  2920.                         fprintf(js_include_file,"var clock_bg_opacity = %.2f;var clock_fg_opacity = %.2f;",fill_opacity,stroke_opacity);
  2921.                         temp = get_string(infile,1);
  2922.                         if( strstr( temp,",") != 0 ){ temp = str_replace(temp,",","\",\""); }
  2923.                         if( strlen(temp) < 1 ){temp = ",\"\",\"\",\"\",\"\",\"\"";}
  2924.                         string_length = snprintf(NULL,0,"clocks%d = new clock(%d,%d,%d,%d,%d,%d,%d,%d,\"%s\");\n",clock_cnt,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],int_data[6],int_data[7],temp);
  2925.                         check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2926.                         snprintf(tmp_buffer,string_length,"clocks%d = new clock(%d,%d,%d,%d,%d,%d,%d,%d,\"%s\");\n",clock_cnt,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],int_data[6],int_data[7],temp);
  2927.                         add_to_buffer(tmp_buffer);
  2928.                         clock_cnt++;
  2929.                         break;
  2930.                 default:break;
  2931.              }
  2932.             }
  2933.             break;
  2934.         case PIECHART:
  2935.         /*
  2936.         @ piechart xc,yc,radius,'data+colorlist'
  2937.         @ (xc : yc) center of circle diagram in xrange/yrange
  2938.         @ radius in pixels
  2939.         @ 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
  2940.         @ example data+colorlist : 132:red:23565:green:323:black:234324:orange:23434:yellow:2543:white
  2941.         @ the number of colors must match the number of data.
  2942.         @ use command "opacity 0-255,0-255" to adjust fill_opacity of colours
  2943.         @ 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.
  2944.         */
  2945.             if( js_function[DRAW_PIECHART] != 1 ){ js_function[DRAW_PIECHART] = 1;}    
  2946.             for(i=0;i<5;i++){
  2947.                 switch(i){
  2948.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2949.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2950.                     case 2: int_data[2] = (int)(get_real(infile,1));break;/* radius*/
  2951.                     case 3: temp = get_string(infile,1);
  2952.                             if( strstr( temp, ":" ) != 0 ){ temp = str_replace(temp,":","\",\"");}
  2953.                             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);
  2954.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2955.                             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);
  2956.                             add_to_buffer(tmp_buffer);
  2957.                            break;
  2958.                     default:break;
  2959.                 }
  2960.             }
  2961.             reset();
  2962.         break;
  2963.         case STATUS:
  2964.         /*
  2965.         @status
  2966.         @keyword
  2967.         @alernative keyword: nostatus
  2968.         @used to override the effects of "status=done" in wims (answer.phtml)
  2969.         @affects inputfields / textarea's in canvasimage and all userdraw based commands
  2970.         @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'
  2971.         */
  2972.        
  2973.             fprintf(js_include_file,"\nwims_status=\"waiting\";\n");
  2974.             break;
  2975.         case XLOGBASE:
  2976.         /*
  2977.         @ xlogbase number
  2978.         @ sets the logbase number for the x-axis
  2979.         @ default value 10
  2980.         @ use together with commands xlogscale / xylogscale
  2981.         */
  2982.             fprintf(js_include_file,"xlogbase=%d;",(int)(get_real(infile,1)));
  2983.             break;
  2984.         case YLOGBASE:
  2985.         /*
  2986.         @ ylogbase number
  2987.         @ sets the logbase number for the y-axis
  2988.         @ default value 10
  2989.         @ use together with commands ylogscale / xylogscale
  2990.         */
  2991.             fprintf(js_include_file,"ylogbase=%d;",(int)(get_real(infile,1)));
  2992.             break;
  2993.         case XLOGSCALE:
  2994.         /*
  2995.          @ xlogscale ymajor,yminor,majorcolor,minorcolor
  2996.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  2997.          @ ymajor is the major step on the y-axis; yminor is the divisor for the y-step
  2998.          @ the linewidth is set using command 'linewidth int'
  2999.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  3000.          @ default logbase number = 10 ... when needed , set the logbase number with command 'xlogbase number'
  3001.          @ 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>
  3002.          @ note: the complete canvas will be used for the 'log paper'
  3003.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  3004.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  3005.          @ 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')  
  3006.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  3007.          @ attention: keyword 'snaptogrid' may not lead to the desired result...
  3008.         */
  3009.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  3010.             if( js_function[DRAW_XLOGSCALE] != 1 ){ js_function[DRAW_XLOGSCALE] = 1;}
  3011.             for(i=0;i<4;i++){
  3012.                 switch(i){
  3013.                     case 0: double_data[0] = get_real(infile,0);break; /* xmajor */
  3014.                     case 1: int_data[0] = (int) (get_real(infile,0));break; /* xminor */
  3015.                     case 2: stroke_color = get_color(infile,0); break;
  3016.                     case 3: fill_color = get_color(infile,1);
  3017.                         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);
  3018.                         tmp_buffer = my_newmem(string_length+1);
  3019.                         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);
  3020.                         fprintf(js_include_file,"use_xlogscale=1;snap_y = %f;snap_x = xlogbase;",double_data[0]/int_data[0]);
  3021.                         add_to_buffer(tmp_buffer);
  3022.                         break;
  3023.                     default:break;
  3024.                 }
  3025.             }
  3026.             break;
  3027.         case YLOGSCALE:
  3028.         /*
  3029.          @ ylogscale xmajor,xminor,majorcolor,minorcolor
  3030.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  3031.          @ xmajor is the major step on the x-axis; xminor is the divisor for the x-step
  3032.          @ the linewidth is set using command 'linewidth int'
  3033.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  3034.          @ default logbase number = 10 ... when needed , set the logbase number with command 'ylogbase number'
  3035.          @ 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>
  3036.          @ note: the complete canvas will be used for the 'log paper'
  3037.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  3038.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  3039.          @ 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')  
  3040.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  3041.          @ attention: keyword 'snaptogrid' may not lead to the desired result...
  3042.         */
  3043.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  3044.             if( js_function[DRAW_YLOGSCALE] != 1 ){ js_function[DRAW_YLOGSCALE] = 1;}
  3045.             for(i=0;i<4;i++){
  3046.                 switch(i){
  3047.                     case 0: double_data[0] = get_real(infile,0);break; /* xmajor */
  3048.                     case 1: int_data[0] = (int) (get_real(infile,0));break; /* xminor */
  3049.                     case 2: stroke_color = get_color(infile,0); break;
  3050.                     case 3: fill_color = get_color(infile,1);
  3051.                         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);
  3052.                         tmp_buffer = my_newmem(string_length+1);
  3053.                         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);
  3054.                         fprintf(js_include_file,"use_ylogscale=1;snap_x = %f;snap_y = ylogbase;",double_data[0]/int_data[0]);
  3055.                         add_to_buffer(tmp_buffer);
  3056.                         break;
  3057.                     default:break;
  3058.                 }
  3059.             }
  3060.             break;
  3061.         case XYLOGSCALE:
  3062.         /*
  3063.          @ xylogscale majorcolor,minorcolor
  3064.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  3065.          @ the linewidth is set using command 'linewidth int'
  3066.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  3067.          @ default logbase number = 10 ... when needed , set the logbase number with command 'xlogbase number' and/or 'ylogbase number'
  3068.          @ 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>
  3069.          @ note: the complete canvas will be used for the 'log paper'
  3070.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  3071.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  3072.          @ 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')  
  3073.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  3074.          @ attention: keyword 'snaptogrid' may not lead to the desired result...
  3075.         */
  3076.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  3077.             if( js_function[DRAW_XYLOGSCALE] != 1 ){ js_function[DRAW_XYLOGSCALE] = 1;}
  3078.             for(i=0;i<2;i++){
  3079.                 switch(i){
  3080.                     case 0: stroke_color = get_color(infile,0); break;
  3081.                     case 1: fill_color = get_color(infile,1);
  3082.                         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);
  3083.                         tmp_buffer = my_newmem(string_length+1);
  3084.                         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);
  3085.                         fprintf(js_include_file,"use_xlogscale=1;use_ylogscale=1;snap_x = xlogbase;snap_y = ylogbase;");
  3086.                         add_to_buffer(tmp_buffer);
  3087.                         break;
  3088.                     default:break;
  3089.                 }
  3090.             }
  3091.         break;
  3092.         default:sync_input(infile);
  3093.         break;
  3094.     }
  3095.   }
  3096.   /* we are done parsing script file */
  3097.   /* check if xrange / yrange was set explicit ... or use xmin=0 xmax=xsize ymin=0 ymax=ysize : Quadrant I */
  3098.   if( found_size_command == 1 ){
  3099.     fprintf(js_include_file,"var xmin = 0;var xmax = %d;var ymin = 0;var ymax = %d",xsize,ysize);
  3100.   }
  3101.   else
  3102.   {
  3103.     if( found_size_command != 3 ){
  3104.      canvas_error("Please specify bothe xrange and yrange ...");
  3105.     }
  3106.   }
  3107.   /* if needed, add generic draw functions (grid / xml etc) to buffer : these are no draggable shapes / objects  ! */
  3108.   add_javascript_functions(js_function,canvas_root_id);
  3109.    /* add read_canvas() etc functions if needed */
  3110.   if( reply_format > 0 ){ add_read_canvas(reply_format,reply_precision);}
  3111.   if( use_pan_and_zoom == TRUE ){
  3112.   /* in case of zooming ... */
  3113.   fprintf(js_include_file,"\n<!-- some extra global stuff : need to rethink panning and zooming !!! -->\n\
  3114.  precision = %d;var xmin_start=xmin;var xmax_start=xmax;\
  3115.  var ymin_start=ymin;var ymax_start=xmax;\
  3116.  var zoom_x_increment=0;var zoom_y_increment=0;\
  3117.  var pan_x_increment=0;var pan_y_increment=0;\
  3118.  if(use_ylogscale == 0 ){\
  3119.   zoom_x_increment = (xmax - xmin)/20;zoom_y_increment = (ymax - ymin)/20;pan_x_increment = (xmax - xmin)/20;pan_y_increment = (ymax - ymin)/20;\
  3120.  }else{\
  3121.   zoom_x_increment = (xmax - xmin)/20;\
  3122.   pan_x_increment = (xmax - xmin)/20;\
  3123.  };\
  3124.  function start_canvas%d(type){\
  3125.   switch(type){\
  3126.    case 0:xmin = xmin + zoom_x_increment;ymin = ymin + zoom_y_increment;xmax = xmax - zoom_x_increment;ymax = ymax - zoom_y_increment;break;\
  3127.    case 1:xmin = xmin - zoom_x_increment;ymin = ymin - zoom_y_increment;xmax = xmax + zoom_x_increment;ymax = ymax + zoom_y_increment;break;\
  3128.    case 2:xmin = xmin - pan_x_increment;ymin = ymin ;xmax = xmax - pan_x_increment;ymax = ymax;break;\
  3129.    case 3:xmin = xmin + pan_x_increment;ymin = ymin ;xmax = xmax + pan_x_increment;ymax = ymax;break;\
  3130.    case 4:xmin = xmin;ymin = ymin - pan_y_increment ;xmax = xmax;ymax = ymax - pan_y_increment;break;\
  3131.    case 5:xmin = xmin;ymin = ymin + pan_y_increment ;xmax = xmax;ymax = ymax + pan_y_increment;break;\
  3132.    case 6:location.reload();break;\
  3133.    default:break;\
  3134.   };\
  3135.   if(xmax<=xmin){xmin=xmin_start;xmax=xmax_start;};\
  3136.   if(ymax<=ymin){ymin=ymin_start;ymax=ymax_start;};\
  3137.   try{dragstuff.Zoom(xmin,xmax,ymin,ymax);}catch(e){}\
  3138.   %s\
  3139.  };\
  3140.  start_canvas%d(333);\
  3141. };\n\
  3142. <!-- end wims_canvas_function -->\n\
  3143. wims_canvas_function%d();\n",precision,canvas_root_id,buffer,canvas_root_id,canvas_root_id);
  3144.   }
  3145.   else
  3146.   {
  3147.   /* no zoom, just add buffer */
  3148.   fprintf(js_include_file,"\n<!-- add buffer -->\n\
  3149.  %s\
  3150. };\n\
  3151. <!-- end wims_canvas_function -->\n\
  3152. wims_canvas_function%d();\n",buffer,canvas_root_id);
  3153.   }
  3154. /* done writing the javascript include file */
  3155. fclose(js_include_file);
  3156.  
  3157. }
  3158.  
  3159. /* if using a tooltip, this should always be printed to the *.phtml file, so stdout */
  3160. if(use_tooltip == TRUE){
  3161.   add_js_tooltip(canvas_root_id,tooltip_text,bgcolor,xsize,ysize);
  3162. }
  3163. exit(EXIT_SUCCESS);
  3164. }
  3165. /* end main() */
  3166.  
  3167. /******************************************************************************
  3168. **
  3169. **  sync_input
  3170. **
  3171. **  synchronises input line - reads to end of line, leaving file pointer
  3172. **  at first character of next line.
  3173. **
  3174. **  Used by:
  3175. **  main program - error handling.
  3176. **
  3177. ******************************************************************************/
  3178. void sync_input(FILE *infile)
  3179. {
  3180.         int c = 0;
  3181.  
  3182.         if( c == '\n' || c == ';' ) return;
  3183.         while( ( (c=getc(infile)) != EOF ) && (c != '\n') && (c != '\r') && (c != ';')) ;
  3184.         if( c == EOF ) finished = 1;
  3185.         if( c == '\n' || c == '\r' || c == ';') line_number++;
  3186.         return;
  3187. }
  3188.  
  3189. /******************************************************************************/
  3190.  
  3191. char *str_replace(const char *str, const char *old, const char *new){
  3192. /* http://creativeandcritical.net/str-replace-c/ */
  3193.     if(strlen(str) > MAX_BUFFER){canvas_error("string argument too big");}
  3194.     char *ret, *r;
  3195.     const char *p, *q;
  3196.     size_t oldlen = strlen(old);
  3197.     size_t count = 0;
  3198.     size_t retlen = 0;
  3199.     size_t newlen = strlen(new);
  3200.     if (oldlen != newlen){
  3201.         for (count = 0, p = str; (q = strstr(p, old)) != NULL; p = q + oldlen){
  3202.             count++;
  3203.             retlen = p - str + strlen(p) + count * (newlen - oldlen);
  3204.         }
  3205.     }
  3206.     else
  3207.     {
  3208.         retlen = strlen(str);
  3209.     }
  3210.    
  3211.     if ((ret = malloc(retlen + 1)) == NULL){
  3212.         ret = NULL;
  3213.         canvas_error("string argument is NULL");
  3214.     }
  3215.     else
  3216.     {
  3217.         for (r = ret, p = str; (q = strstr(p, old)) != NULL; p = q + oldlen) {
  3218.             size_t l = q - p;
  3219.             memcpy(r, p, l);
  3220.             r += l;
  3221.             memcpy(r, new, newlen);
  3222.             r += newlen;
  3223.         }
  3224.         strcpy(r, p);
  3225.     }
  3226.     return ret;
  3227. }
  3228.  
  3229. /******************************************************************************/
  3230.  
  3231. char *get_color(FILE *infile , int last){
  3232.     int c,i = 0,is_hex = 0;
  3233.     char temp[MAX_COLOR_STRING], *string;
  3234.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') && ( c != ',' ) && ( c != ';' ) ){
  3235.         if( i > MAX_COLOR_STRING ){ canvas_error("colour string is too big ... ? ");}
  3236.         if( c == '#' ){
  3237.             is_hex = 1;
  3238.         }
  3239.         if( c != ' '){
  3240.             temp[i]=tolower(c);
  3241.             i++;
  3242.         }
  3243.     }
  3244.     if( ( c == '\n' || c == EOF || c == ';' ) && last == 0){canvas_error("expecting more arguments in command");}
  3245.     if( c == '\n' || c == ';' ){ done = TRUE; line_number++; }
  3246.     if( c == EOF ){finished = 1;}
  3247.     if( finished == 1 && last != 1 ){ canvas_error("expected more arguments");}
  3248.     temp[i]='\0';
  3249.     if( strlen(temp) == 0 ){ canvas_error("expected a colorname or hexnumber, but found nothing !!");}
  3250.     if( is_hex == 1 ){
  3251.         char red[3], green[3], blue[3];
  3252.         red[0]   = toupper(temp[1]); red[1]   = toupper(temp[2]); red[2]   = '\0';
  3253.         green[0] = toupper(temp[3]); green[1] = toupper(temp[4]); green[2] = '\0';
  3254.         blue[0]  = toupper(temp[5]); blue[1]  = toupper(temp[6]); blue[2]  = '\0';
  3255.         int r = (int) strtol(red,   NULL, 16);
  3256.         int g = (int) strtol(green, NULL, 16);
  3257.         int b = (int) strtol(blue,  NULL, 16);
  3258.         string = (char *)my_newmem(12);
  3259.         snprintf(string,11,"%d,%d,%d",r,g,b);
  3260.         return string;
  3261.     }
  3262.     else
  3263.     {
  3264.         string = (char *)my_newmem(sizeof(temp));
  3265.         snprintf(string,sizeof(temp),"%s",temp);
  3266.         for( i = 0; i <= NUMBER_OF_COLORNAMES ; i++ ){
  3267.             if( strcmp( colors[i].name , string ) == 0 ){
  3268.                 return colors[i].rgb;
  3269.             }
  3270.         }
  3271.     }
  3272.     /* not found...return error */
  3273.     free(string);string = NULL;
  3274.     canvas_error("I was expecting a color name or hexnumber...but found nothing.");
  3275.     return NULL;
  3276. }
  3277.  
  3278. char *get_string(FILE *infile,int last){ /* last = 0 : more arguments ; last=1 final argument */
  3279.     int c,i=0;
  3280.     char  temp[MAX_BUFFER], *string;
  3281.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') ){
  3282.         temp[i]=c;
  3283.         i++;
  3284.         if(i > MAX_BUFFER){ canvas_error("string size too big...repeat command to fit string");break;}
  3285.     }
  3286.     if( ( c == '\n' || c == EOF ) && last == 0){canvas_error("expecting more arguments in command");}
  3287.     if( c == '\n') { done = TRUE; line_number++; }
  3288.     if( c == EOF ) {
  3289.         finished = 1;
  3290.         if( last != 1 ){ canvas_error("expected more arguments");}
  3291.     }
  3292.     temp[i]='\0';
  3293.     if( strlen(temp) == 0 ){ canvas_error("expected a word or string, but found nothing !!");}
  3294.     string=(char *)my_newmem(strlen(temp));
  3295.     snprintf(string,sizeof(temp),"%s",temp);
  3296.     return string;
  3297. }
  3298.  
  3299. char *get_string_argument(FILE *infile,int last){  /* last = 0 : more arguments ; last=1 final argument */
  3300.     int c,i=0;
  3301.     char temp[MAX_BUFFER], *string;
  3302.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') && ( c != ',')){
  3303.         temp[i]=c;
  3304.         i++;
  3305.         if(i > MAX_BUFFER){ canvas_error("string size too big...will cut it off");break;}
  3306.     }
  3307.     if( ( c == '\n' || c == EOF) && last == 0){canvas_error("expecting more arguments in command");}
  3308.     if( c == '\n') { line_number++; }
  3309.     if( c == EOF ) {finished = 1;}
  3310.     if( finished == 1 && last != 1 ){ canvas_error("expected more arguments");}
  3311.     temp[i]='\0';
  3312.     if( strlen(temp) == 0 ){ canvas_error("expected a word or string (without comma) , but found nothing !!");}
  3313.     string=(char *)my_newmem(sizeof(temp));
  3314.     snprintf(string,sizeof(temp),"%s",temp);
  3315.     done = TRUE;
  3316.     return string;
  3317. }
  3318.  
  3319. double get_real(FILE *infile, int last){ /* accept anything that looks like an number ?  last = 0 : more arguments ; last=1 final argument */
  3320.     int c,i=0,found_calc = 0;
  3321.     double y;
  3322.     char tmp[MAX_INT];
  3323.     while(( (c=getc(infile)) != EOF ) && ( c != ',') && (c != '\n') && ( c != ';')){
  3324.      if( c != ' ' ){
  3325.      /*
  3326.      libmatheval will segfault when for example: "xrange -10,+10" or "xrange -10,10+" is used
  3327.      We will check after assert() if it's a NULL pointer...and exit program via :
  3328.      canvas_error("I'm having trouble parsing your \"expression\" ");
  3329.      */
  3330.       if( i == 0 &&  c == '+' ){
  3331.        continue;
  3332.       }
  3333.       else
  3334.       {
  3335.        if(canvas_iscalculation(c) != 0){
  3336.         found_calc = 1;
  3337.         c = tolower(c);
  3338.        }
  3339.        tmp[i] = c;
  3340.        i++;
  3341.       }
  3342.      }
  3343.      if( i > MAX_INT - 1){canvas_error("number too large");}
  3344.     }
  3345.     if( ( c == '\n' || c == EOF || c == ';' ) && last == 0){canvas_error("expecting more arguments in command");}
  3346.     if( c == '\n' || c == ';' ){ done = TRUE; line_number++; }
  3347.     if( c == EOF ){done = TRUE ; finished = 1;}
  3348.     tmp[i]='\0';
  3349.     if( strlen(tmp) == 0 ){canvas_error("expected a number , but found nothing !!");}
  3350.     if( found_calc == 1 ){ /* use libmatheval to calculate 2*pi/3 */
  3351.      void *f = eval_create(tmp);
  3352.      assert(f);if( f == NULL ){canvas_error("I'm having trouble parsing your \"expression\" ") ;}
  3353.      y = eval_x(f, 1);
  3354.      /* if function is bogus; y = 1 : so no core dumps */
  3355.      eval_destroy(f);
  3356.     }
  3357.     else
  3358.     {
  3359.      y = atof(tmp);
  3360.     }
  3361.     return y;
  3362. }
  3363. void canvas_error(char *msg){
  3364.     fprintf(stdout,"\n</script><hr /><span style=\"color:red\">FATAL syntax error:line %d : %s</span><hr />",line_number-1,msg);
  3365.     finished = 1;
  3366.     exit(EXIT_SUCCESS);
  3367. }
  3368.  
  3369.  
  3370. /* convert x/y coordinates to pixel */
  3371. int x2px(double x){
  3372.  return x*xsize/(xmax - xmin) -  xsize*xmin/(xmax - xmin);
  3373. }
  3374.  
  3375. int y2px(double y){
  3376.  return -1*y*ysize/(ymax - ymin) + ymax*ysize/(ymax - ymin);
  3377. }
  3378.  
  3379. double px2x(int x){
  3380.  return (x*(xmax - xmin)/xsize + xmin);
  3381. }
  3382. double px2y(int y){
  3383.  return (y*(ymax - ymin)/ysize + ymin);
  3384. }
  3385.  
  3386. void add_to_buffer(char *tmp){
  3387.  if( tmp == NULL || tmp == 0 ){ canvas_error("nothing to add_to_buffer()...");}
  3388.  /*  do we have enough space left in buffer[MAX_BUFFER] ? */
  3389.  int space_left = (int) (sizeof(buffer) - strlen(buffer));
  3390.  if( space_left > strlen(tmp)){
  3391.   strncat(buffer,tmp,space_left - 1);/* add safely "tmp" to the string buffer */
  3392.  }
  3393.  else
  3394.  {
  3395.   canvas_error("buffer is too big\n");
  3396.  }
  3397.  tmp = NULL;free(tmp);
  3398.  return;
  3399. }
  3400.  
  3401. void reset(){
  3402.  if(use_filled == TRUE){use_filled = FALSE;}
  3403.  if(use_dashed == TRUE){use_dashed = FALSE;}
  3404.  if(use_rotate == TRUE){use_rotate = FALSE;}
  3405.    onclick = 0;
  3406. }
  3407.  
  3408.  
  3409.  
  3410. /* What reply format in read_canvas();
  3411.  
  3412. note:if userdraw is combined with inputfields...every "userdraw" based answer will append "\n" and  inputfield.value()
  3413. 1 = x1,x2,x3,x4....x_n
  3414.     y1,y2,y3,y4....y_n
  3415.  
  3416.     x/y in pixels
  3417.  
  3418. 2 = x1,x2,x3,x4....x_n
  3419.     y1,y2,y3,y4....y_n
  3420.     x/y in  xrange / yrange coordinate system
  3421.  
  3422. 3 = x1,x2,x3,x4....x_n
  3423.     y1,y2,y3,y4....y_n
  3424.     r1,r2,r3,r4....r_n
  3425.  
  3426.     x/y in pixels
  3427.     r in pixels
  3428.  
  3429. 4 = x1,x2,x3,x4....x_n
  3430.     y1,y2,y3,y4....y_n
  3431.     r1,r2,r3,r4....r_n
  3432.  
  3433.     x/y in  xrange / yrange coordinate system
  3434.     r in pixels
  3435.  
  3436. 5 = Ax1,Ax2,Ax3,Ax4....Ax_n
  3437.     Ay1,Ay2,Ay3,Ay4....Ay_n
  3438.     Bx1,Bx2,Bx3,Bx4....Bx_n
  3439.     By1,By2,By3,By4....By_n
  3440.     Cx1,Cx2,Cx3,Cx4....Cx_n
  3441.     Cy1,Cy2,Cy3,Cy4....Cy_n
  3442.     ....
  3443.     Zx1,Zx2,Zx3,Zx4....Zx_n
  3444.     Zy1,Zy2,Zy3,Zy4....Zy_n
  3445.    
  3446.     x/y in pixels
  3447.  
  3448. 6 = Ax1,Ax2,Ax3,Ax4....Ax_n
  3449.     Ay1,Ay2,Ay3,Ay4....Ay_n
  3450.     Bx1,Bx2,Bx3,Bx4....Bx_n
  3451.     By1,By2,By3,By4....By_n
  3452.     Cx1,Cx2,Cx3,Cx4....Cx_n
  3453.     Cy1,Cy2,Cy3,Cy4....Cy_n
  3454.     ....
  3455.     Zx1,Zx2,Zx3,Zx4....Zx_n
  3456.     Zy1,Zy2,Zy3,Zy4....Zy_n
  3457.  
  3458.     x/y in  xrange / yrange coordinate system
  3459.    
  3460. 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n
  3461.    
  3462.     x/y in pixels
  3463.  
  3464. 8 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n
  3465.    
  3466.     x/y in  xrange / yrange coordinate system
  3467.  
  3468. 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n    
  3469.  
  3470.     x/y in pixels
  3471.  
  3472. 10 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n    
  3473.  
  3474.     x/y in  xrange / yrange coordinate system
  3475.  
  3476. 11 = Ax1,Ay1,Ax2,Ay2
  3477.      Bx1,By1,Bx2,By2
  3478.      Cx1,Cy1,Cx2,Cy2
  3479.      Dx1,Dy1,Dx2,Dy2
  3480.      ......
  3481.      Zx1,Zy1,Zx2,Zy2
  3482.      
  3483.     x/y in  xrange / yrange coordinate system
  3484.  
  3485. 12 = Ax1,Ay1,Ax2,Ay2
  3486.      Bx1,By1,Bx2,By2
  3487.      Cx1,Cy1,Cx2,Cy2
  3488.      Dx1,Dy1,Dx2,Dy2
  3489.      ......
  3490.      Zx1,Zy1,Zx2,Zy2
  3491.      
  3492.     x/y in pixels
  3493.  
  3494. 13 = Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2,Cx1:Cy1:Cx2:Cy2,Dx1:Dy1:Dx2:Dy2, ... ,Zx1:Zy1:Zx2:Zy2
  3495.  
  3496.     x/y in  xrange / yrange coordinate system
  3497. 14 = Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2....Zx1:Zy1:Zx2:Zy2
  3498.     x/y in pixels
  3499. 15 = reply from inputfields,textareas
  3500.     reply1,reply2,reply3,...,reply_n
  3501.     only fields set write (a.g. will not read 'readonly' inputfield values'
  3502.  
  3503. 16 = read mathml inputfields only
  3504.  
  3505. 17 = read userdraw text only (x1:y1:text1,x2:y2:text2...x_n:y_n:text_n
  3506.  when ready : calculate size_t of string via snprintf(NULL,0,"blah blah...");
  3507.  
  3508. 18 = read clock(s) : H1:M1:S1,H2:M2:S2,...H_n:M_n:S_n
  3509. 19 = return clicked object number (analogue to shape-library onclick)
  3510. 20 = return x/y-data in x-range/y-range of all 'draggable' images
  3511. 21 = return verbatim coordinates (x1:y1) (x2:y2)...(x_n:y_n)
  3512. 22 = array : x1,y1,x2,y2,x3,y3,x4,y4...x_n,y_n
  3513.     x/y in  xrange / yrange coordinate system
  3514. 23 = answertype for a polyline : remove multiple occurences  due to reclick on a point to create next polyline segment
  3515. 24 = read all inputfield values: even those set 'readonly'
  3516. 25 = return all userdrawn arcs in degrees:
  3517. 26 = return all userdrawn arcs in radians:
  3518. */
  3519.  
  3520.  
  3521. void add_read_canvas(int type_reply,int reply_precision){
  3522. /* just 1 reply type allowed */
  3523. fprintf(js_include_file,"\
  3524. \n<!-- begin set_reply_precision() -->\n\
  3525. function set_reply_precision(){\
  3526. var len = userdraw_x.length;\
  3527. var prec = %d;\
  3528. for(var p = 0 ; p < len ; p++ ){\
  3529.  userdraw_x[p] = (Math.round(prec*userdraw_x[p]))/prec;\
  3530.  userdraw_y[p] = (Math.round(prec*userdraw_y[p]))/prec;\
  3531. };\
  3532. len = userdraw_radius.length;\
  3533. if( len > 0 ){\
  3534.  for(var p = 0 ; p < len ; p++ ){\
  3535.   userdraw_radius[p] = (Math.round(prec*userdraw_radius[p]))/prec;\
  3536.  };\
  3537. };\
  3538. };",reply_precision);
  3539.  
  3540. switch(type_reply){
  3541. /*  
  3542. answers may have:
  3543. x-values,y-values,r-values,input-fields,mathml-inputfields,text-typed answers
  3544. */
  3545.     case 1: fprintf(js_include_file,"\
  3546. \n<!-- begin function 1 read_canvas() -->\n\
  3547. function read_canvas(){\
  3548. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3549. set_reply_precision();\
  3550. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3551.  var p = 0;var input_reply = new Array();\
  3552.  if( document.getElementById(\"canvas_input0\")){\
  3553.   var t = 0;\
  3554.   while(document.getElementById(\"canvas_input\"+t)){\
  3555.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3556.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3557.     p++;\
  3558.    };\
  3559.    t++;\
  3560.   };\
  3561.  };\
  3562.  if( typeof userdraw_text != 'undefined' ){\
  3563.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+input_reply + \"\\n\"+userdraw_text;\
  3564.  }\
  3565.  else\
  3566.  {\
  3567.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+input_reply;\
  3568.  }\
  3569. }\
  3570. else\
  3571. {\
  3572.  if( typeof userdraw_text != 'undefined' ){\
  3573.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_text;\
  3574.  }\
  3575.  else\
  3576.  {\
  3577.   return userdraw_x+\"\\n\"+userdraw_y;\
  3578.  }\
  3579. };\
  3580. };\
  3581. this.read_canvas = read_canvas;\n\
  3582. <!-- end function 1 read_canvas() -->");
  3583.     break;
  3584.     case 2: fprintf(js_include_file,"\
  3585. \n<!-- begin function 2 read_canvas() -->\n\
  3586. function read_canvas(){\
  3587. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3588. set_reply_precision();\
  3589. var reply_x = new Array();var reply_y = new Array();var p = 0;\
  3590. var prec = %d;\
  3591. while(userdraw_x[p]){\
  3592.  reply_x[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec;\
  3593.  reply_y[p] = (Math.round(prec*(px2y(userdraw_y[p]))))/prec;\
  3594.  p++;\
  3595. };\
  3596. if(p == 0){alert(\"nothing drawn...\");return;};\
  3597. if( document.getElementById(\"canvas_input0\")){\
  3598.  var p = 0;var input_reply = new Array();\
  3599.  if( document.getElementById(\"canvas_input0\")){\
  3600.   var t = 0;\
  3601.   while(document.getElementById(\"canvas_input\"+t)){\
  3602.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3603.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3604.     p++;\
  3605.    };\
  3606.    t++;\
  3607.   };\
  3608.  };\
  3609.  if( typeof userdraw_text != 'undefined' ){\
  3610.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3611.  }\
  3612.  else\
  3613.  {\
  3614.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply;\
  3615.  }\
  3616. }\
  3617. else\
  3618. {\
  3619.  if( typeof userdraw_text != 'undefined' ){\
  3620.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_text;\
  3621.  }\
  3622.  else\
  3623.  {\
  3624.   return reply_x+\"\\n\"+reply_y;\
  3625.  };\
  3626. };\
  3627. };\
  3628. this.read_canvas = read_canvas;\n\
  3629. <!-- end function 2 read_canvas() -->",reply_precision);
  3630.     break;
  3631.     case 3: fprintf(js_include_file,"\
  3632. \n<!-- begin function 3 read_canvas() -->\n\
  3633. function read_canvas(){\
  3634. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3635. set_reply_precision();\
  3636. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3637.  var p = 0;var input_reply = new Array();\
  3638.  if( document.getElementById(\"canvas_input0\")){\
  3639.   var t = 0;\
  3640.   while(document.getElementById(\"canvas_input\"+t)){\
  3641.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3642.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3643.     p++;\
  3644.    };\
  3645.    t++;\
  3646.   };\
  3647.  };\
  3648.  if( typeof userdraw_text != 'undefined' ){\
  3649.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3650.  }\
  3651.  else\
  3652.  {\
  3653.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+input_reply;\
  3654.  }\
  3655. }\
  3656. else\
  3657. {\
  3658.  if( typeof userdraw_text != 'undefined' ){\
  3659.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+userdrawW_text;\
  3660.  }\
  3661.  else\
  3662.  {\
  3663.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius;\
  3664.  }\
  3665. }\
  3666. };\
  3667. this.read_canvas = read_canvas;\n\
  3668. <!-- end function 3 read_canvas() -->");
  3669.     break;
  3670.     case 4: fprintf(js_include_file,"\
  3671. \n<!-- begin function 4 read_canvas() -->\n\
  3672. function read_canvas(){\
  3673. var prec = %d;\
  3674. var reply_x = new Array();var reply_y = new Array();var p = 0;\
  3675. while(userdraw_x[p]){\
  3676.  reply_x[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec;\
  3677.  reply_y[p] = (Math.round(prec*(px2y(userdraw_y[p]))))/prec;;\
  3678.  p++;\
  3679. };\
  3680. if(p == 0){alert(\"nothing drawn...\");return;};\
  3681. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3682.  var p = 0;var input_reply = new Array();\
  3683.  if( document.getElementById(\"canvas_input0\")){\
  3684.   var t = 0;\
  3685.   while(document.getElementById(\"canvas_input\"+t)){\
  3686.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3687.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3688.     p++;\
  3689.    };\
  3690.    t++;\
  3691.   };\
  3692.  };\
  3693.  if( typeof userdraw_text != 'undefined' ){\
  3694.   return reply_x+\"\\n\"+reply_y +\"\\n\"+userdraw_radius+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3695.  }\
  3696.  else\
  3697.  {\
  3698.   return reply_x+\"\\n\"+reply_y +\"\\n\"+userdraw_radius+\"\\n\"+input_reply;\
  3699.  }\
  3700. }\
  3701. else\
  3702. {\
  3703.  if( typeof userdraw_text != 'undefined' ){\
  3704.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_radius+\"\\n\"+userdraw_text;\
  3705.  }\
  3706.  else\
  3707.  {\
  3708.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_radius;\
  3709.  }\
  3710. };\
  3711. };\
  3712. this.read_canvas = read_canvas;\n\
  3713. <!-- end function 4 read_canvas() -->",reply_precision);
  3714.     break;
  3715.     /*
  3716.         attention: we reset userdraw_x / userdraw_y  : because  userdraw_x = [][] userdraw_y = [][]
  3717.         used for userdraw multiple paths
  3718.     */
  3719.     case 5: fprintf(js_include_file,"\
  3720. \n<!-- begin function 5 read_canvas() -->\n\
  3721. function read_canvas(){\
  3722. set_reply_precision();\
  3723. var p = 0;\
  3724. var reply = \"\";\
  3725. for(p = 0; p < userdraw_x.length;p++){\
  3726.  if(userdraw_x[p] != null ){\
  3727.   reply = reply + userdraw_x[p]+\"\\n\"+userdraw_y[p]+\"\\n\";\
  3728.  };\
  3729. };\
  3730. if(p == 0){alert(\"nothing drawn...\");return;};\
  3731. userdraw_x = [];userdraw_y = [];\
  3732. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3733.  var p = 0;var input_reply = new Array();\
  3734.  if( document.getElementById(\"canvas_input0\")){\
  3735.   var t = 0;\
  3736.   while(document.getElementById(\"canvas_input\"+t)){\
  3737.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3738.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3739.     p++;\
  3740.    };\
  3741.    t++;\
  3742.   };\
  3743.  };\
  3744.  if( typeof userdraw_text != 'undefined' ){\
  3745.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3746.  }\
  3747.  else\
  3748.  {\
  3749.   return reply +\"\\n\"+input_reply;\
  3750.  }\
  3751. }\
  3752. else\
  3753. {\
  3754.  if( typeof userdraw_text != 'undefined' ){\
  3755.   return reply+\"\\n\"+userdraw_text;\
  3756.  }\
  3757.  else\
  3758.  {\
  3759.   return reply;\
  3760.  }\
  3761. };\
  3762. };\
  3763. this.read_canvas = read_canvas;\n\
  3764. <!-- end function 5 read_canvas() -->");
  3765.     break;
  3766.     /*
  3767.         attention: we reset userdraw_x / userdraw_y  : because  userdraw_x = [][] userdraw_y = [][]
  3768.         used for userdraw multiple paths
  3769.     */
  3770.     case 6: fprintf(js_include_file,"\
  3771. \n<!-- begin function 6 read_canvas() -->\n\
  3772. function read_canvas(){\
  3773. var p = 0;\
  3774. var reply = \"\";\
  3775. var tmp_x = new Array();\
  3776. var tmp_y = new Array();\
  3777. var prec = %d;\
  3778. for(p = 0 ; p < userdraw_x.length; p++){\
  3779.  tmp_x = userdraw_x[p];\
  3780.  tmp_y = userdraw_y[p];\
  3781.  if(tmp_x != null){\
  3782.   for(var i = 0 ; i < tmp_x.length ; i++){\
  3783.    tmp_x[i] = (Math.round(prec*(px2x(tmp_x[i]))))/prec;\
  3784.    tmp_y[i] = (Math.round(prec*(px2y(tmp_y[i]))))/prec;\
  3785.   };\
  3786.   reply = reply + tmp_x + \"\\n\" + tmp_y +\"\\n\";\
  3787.  };\
  3788. };\
  3789. if(p == 0){alert(\"nothing drawn...\");return;};\
  3790. userdraw_x = [];userdraw_y = [];\
  3791. if( document.getElementById(\"canvas_input0\") ){\
  3792.  var p = 0;var input_reply = new Array();\
  3793.  if( document.getElementById(\"canvas_input0\")){\
  3794.   var t = 0;\
  3795.   while(document.getElementById(\"canvas_input\"+t)){\
  3796.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3797.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3798.     p++;\
  3799.    };\
  3800.    t++;\
  3801.   };\
  3802.  };\
  3803.  if( typeof userdraw_text != 'undefined' ){\
  3804.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3805.  }\
  3806.  else\
  3807.  {\
  3808.   return reply +\"\\n\"+input_reply;\
  3809.  }\
  3810. }\
  3811. else\
  3812. {\
  3813.  if( typeof userdraw_text != 'undefined' ){\
  3814.   return reply +\"\\n\"+userdraw_text;\
  3815.  }\
  3816.  else\
  3817.  {\
  3818.   return reply;\
  3819.  }\
  3820. };\
  3821. };\
  3822. this.read_canvas = read_canvas;\n\
  3823. <!-- end function 6 read_canvas() -->",reply_precision);
  3824.     break;
  3825.     case 7: fprintf(js_include_file,"\
  3826. \n<!-- begin function 7 read_canvas() -->\n\
  3827. function read_canvas(){\
  3828. set_reply_precision();\
  3829. var reply = new Array();\
  3830. var p = 0;\
  3831. while(userdraw_x[p]){\
  3832.  reply[p] = userdraw_x[p] +\":\" + userdraw_y[p];\
  3833.  p++;\
  3834. };\
  3835. if(p == 0){alert(\"nothing drawn...\");return;};\
  3836. if( document.getElementById(\"canvas_input0\") ){\
  3837.  var p = 0;var input_reply = new Array();\
  3838.  if( document.getElementById(\"canvas_input0\")){\
  3839.   var t = 0;\
  3840.   while(document.getElementById(\"canvas_input\"+t)){\
  3841.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3842.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3843.     p++;\
  3844.    };\
  3845.    t++;\
  3846.   };\
  3847.  };\
  3848.  if( typeof userdraw_text != 'undefined' ){\
  3849.   return reply+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3850.  }\
  3851.  else\
  3852.  {\
  3853.   return reply+\"\\n\"+input_reply;\
  3854.  }\
  3855. }\
  3856. else\
  3857. {\
  3858.  if( typeof userdraw_text != 'undefined' ){\
  3859.   return reply+\"\\n\"+userdraw_text;\
  3860.  }\
  3861.  else\
  3862.  {\
  3863.   return reply;\
  3864.  }\
  3865. };\
  3866. };\
  3867. this.read_canvas = read_canvas;\n\
  3868. <!-- end function 7 read_canvas() -->");
  3869.     break;
  3870.     case 8: fprintf(js_include_file,"\
  3871. \n<!-- begin function 8 read_canvas() -->\n\
  3872. function read_canvas(){\
  3873. var reply = new Array();\
  3874. var p = 0;\
  3875. var prec = %d;\
  3876. while(userdraw_x[p]){\
  3877.  reply[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec +\":\" + (Math.round(prec*(px2y(userdraw_y[p]))))/prec;\
  3878.  p++;\
  3879. };\
  3880. if(p == 0){alert(\"nothing drawn...\");return;};\
  3881. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3882.  var p = 0;var input_reply = new Array();\
  3883.  if( document.getElementById(\"canvas_input0\")){\
  3884.   var t = 0;\
  3885.   while(document.getElementById(\"canvas_input\"+t)){\
  3886.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3887.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3888.     p++;\
  3889.    };\
  3890.    t++;\
  3891.   };\
  3892.  };\
  3893.  if( typeof userdraw_text != 'undefined' ){\
  3894.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3895.  }\
  3896.  else\
  3897.  {\
  3898.   return reply +\"\\n\"+input_reply;\
  3899.  }\
  3900. }\
  3901. else\
  3902. {\
  3903.  if( typeof userdraw_text != 'undefined' ){\
  3904.   return reply +\"\\n\"+userdraw_text;\
  3905.  }\
  3906.  else\
  3907.  {\
  3908.   return reply;\
  3909.  }\
  3910. };\
  3911. };\
  3912. this.read_canvas = read_canvas;\n\
  3913. <!-- end function 8 read_canvas() -->",reply_precision);
  3914.     break;
  3915.     case 9: fprintf(js_include_file,"\
  3916. \n<!-- begin function 9 read_canvas() -->\n\
  3917. function read_canvas(){\
  3918. set_reply_precision();\
  3919. var reply = new Array();\
  3920. var p = 0;\
  3921. while(userdraw_x[p]){\
  3922.  reply[p] = userdraw_x[p] +\":\" + userdraw_y[p] + \":\" + userdraw_radius[p];\
  3923.  p++;\
  3924. };\
  3925. if(p == 0){alert(\"nothing drawn...\");return;};\
  3926. if( document.getElementById(\"canvas_input0\") ){\
  3927.  var p = 0;var input_reply = new Array();\
  3928.  if( document.getElementById(\"canvas_input0\")){\
  3929.   var t = 0;\
  3930.   while(document.getElementById(\"canvas_input\"+t)){\
  3931.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3932.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3933.     p++;\
  3934.    };\
  3935.    t++;\
  3936.   };\
  3937.  };\
  3938.  if( typeof userdraw_text != 'undefined' ){\
  3939.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3940.  }\
  3941.  else\
  3942.  {\
  3943.   return reply +\"\\n\"+input_reply;\
  3944.  }\
  3945. }\
  3946. else\
  3947. {\
  3948.  if( typeof userdraw_text != 'undefined' ){\
  3949.   return reply +\"\\n\"+userdraw_text;\
  3950.  }\
  3951.  else\
  3952.  {\
  3953.   return reply;\
  3954.  }\
  3955. };\
  3956. };\
  3957. this.read_canvas = read_canvas;\n\
  3958. <!-- end function 9 read_canvas() -->");
  3959.     break;
  3960.     case 10: fprintf(js_include_file,"\
  3961. \n<!-- begin function 10 read_canvas() -->\n\
  3962. function read_canvas(){\
  3963. var reply = new Array();\
  3964. var p = 0;\
  3965. var prec = %d;\
  3966. while(userdraw_x[p]){\
  3967.  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;\
  3968.  p++;\
  3969. };\
  3970. if(p == 0){alert(\"nothing drawn...\");return;};\
  3971. if( document.getElementById(\"canvas_input0\") ){\
  3972.  var p = 0;var input_reply = new Array();\
  3973.  if( document.getElementById(\"canvas_input0\")){\
  3974.   var t = 0;\
  3975.   while(document.getElementById(\"canvas_input\"+t)){\
  3976.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3977.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3978.     p++;\
  3979.    };\
  3980.    t++;\
  3981.   };\
  3982.  };\
  3983.  if( typeof userdraw_text != 'undefined' ){\
  3984.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3985.  }\
  3986.  else\
  3987.  {\
  3988.   return reply +\"\\n\"+input_reply;\
  3989.  }\
  3990. }\
  3991. else\
  3992. {\
  3993.  if( typeof userdraw_text != 'undefined' ){\
  3994.   return reply +\"\\n\"+userdraw_text;\
  3995.  }\
  3996.  else\
  3997.  {\
  3998.   return reply;\
  3999.  }\
  4000. };\
  4001. };\
  4002. this.read_canvas = read_canvas;\n\
  4003. <!-- end function 10 read_canvas() -->",reply_precision);
  4004.     break;
  4005.     case 11: fprintf(js_include_file,"\
  4006. \n<!-- begin function 11 read_canvas() -->\n\
  4007. function read_canvas(){\
  4008. var reply = \"\";\
  4009. var p = 0;\
  4010. var prec = %d;\
  4011. while(userdraw_x[p]){\
  4012.  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\" ;\
  4013.  p = p+2;\
  4014. };\
  4015. if(p == 0){alert(\"nothing drawn...\");return;};\
  4016. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  4017.  var p = 0;var input_reply = new Array();\
  4018.  if( document.getElementById(\"canvas_input0\")){\
  4019.   var t = 0;\
  4020.   while(document.getElementById(\"canvas_input\"+t)){\
  4021.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4022.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4023.     p++;\
  4024.    };\
  4025.    t++;\
  4026.   };\
  4027.  };\
  4028.  if( typeof userdraw_text != 'undefined' ){\
  4029.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4030.  }\
  4031.  else\
  4032.  {\
  4033.   return reply +\"\\n\"+input_reply;\
  4034.  }\
  4035. }\
  4036. else\
  4037. {\
  4038.  if( typeof userdraw_text != 'undefined' ){\
  4039.   return reply +\"\\n\"+userdraw_text;\
  4040.  }\
  4041.  else\
  4042.  {\
  4043.   return reply;\
  4044.  }\
  4045. };\
  4046. };\
  4047. this.read_canvas = read_canvas;\n\
  4048. <!-- end function 11 read_canvas() -->",reply_precision);
  4049.     break;
  4050.     case 12: fprintf(js_include_file,"\
  4051. \n<!-- begin function 12 read_canvas() -->\n\
  4052. function read_canvas(){\
  4053. set_reply_precision();\
  4054. var reply = \"\";\
  4055. var p = 0;\
  4056. for(p = 0; p< userdraw_x.lenght;p = p+2){\
  4057.  if(userdraw_x[p] != null){\
  4058.    reply = reply + userdraw_x[p] +\",\" + userdraw_y[p] +\",\" + userdraw_x[p+1] +\",\" + userdraw_y[p+1] +\"\\n\" ;\
  4059.  };\
  4060. };\
  4061. if(p == 0){alert(\"nothing drawn...\");return;};\
  4062. if( document.getElementById(\"canvas_input0\") ){\
  4063.  var p = 0;var input_reply = new Array();\
  4064.  if( document.getElementById(\"canvas_input0\")){\
  4065.   var t = 0;\
  4066.   while(document.getElementById(\"canvas_input\"+t)){\
  4067.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4068.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4069.     p++;\
  4070.    };\
  4071.    t++;\
  4072.   };\
  4073.  };\
  4074.  if( typeof userdraw_text != 'undefined' ){\
  4075.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4076.  }\
  4077.  else\
  4078.  {\
  4079.   return reply +\"\\n\"+input_reply;\
  4080.  }\
  4081. }\
  4082. else\
  4083. {\
  4084.  if( typeof userdraw_text != 'undefined' ){\
  4085.   return reply +\"\\n\"+userdraw_text\
  4086.  }\
  4087.  else\
  4088.  {\
  4089.   return reply;\
  4090.  }\
  4091. };\
  4092. };\
  4093. this.read_canvas = read_canvas;\n\
  4094. <!-- end function 12 read_canvas() -->");
  4095.     break;
  4096.     case 13: fprintf(js_include_file,"\
  4097. \n<!-- begin function 13 read_canvas() -->\n\
  4098. function read_canvas(){\
  4099. var reply = new Array();\
  4100. var p = 0;var i = 0;\
  4101. var prec = %d;\
  4102. while(userdraw_x[p]){\
  4103.  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;\
  4104.  p = p+2;i++;\
  4105. };\
  4106. if(p == 0){alert(\"nothing drawn...\");return;};\
  4107. if( document.getElementById(\"canvas_input0\") ){\
  4108.  var p = 0;var input_reply = new Array();\
  4109.  if( document.getElementById(\"canvas_input0\")){\
  4110.   var t = 0;\
  4111.   while(document.getElementById(\"canvas_input\"+t)){\
  4112.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4113.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4114.     p++;\
  4115.    };\
  4116.    t++;\
  4117.   };\
  4118.  };\
  4119.  if( typeof userdraw_text != 'undefined' ){\
  4120.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4121.  }\
  4122.  else\
  4123.  {\
  4124.   return reply +\"\\n\"+input_reply;\
  4125.  }\
  4126. }\
  4127. else\
  4128. {\
  4129.  if( typeof userdraw_text != 'undefined' ){\
  4130.   return reply +\"\\n\"+userdraw_text\
  4131.  }\
  4132.  else\
  4133.  {\
  4134.   return reply;\
  4135.  }\
  4136. };\
  4137. };\
  4138. this.read_canvas = read_canvas;\n\
  4139. <!-- end function 13 read_canvas() -->",reply_precision);
  4140.     break;
  4141.     case 14: fprintf(js_include_file,"\
  4142. \n<!-- begin function 14 read_canvas() -->\n\
  4143. function read_canvas(){\
  4144. set_reply_precision();\
  4145. var reply = new Array();\
  4146. var p = 0;var i = 0;\
  4147. while(userdraw_x[p]){\
  4148.  reply[i] = userdraw_x[p] +\":\" + userdraw_y[p] +\":\" + userdraw_x[p+1] +\":\" + userdraw_y[p+1];\
  4149.  p = p+2;i++;\
  4150. };\
  4151. if(p == 0){alert(\"nothing drawn...\");return;};\
  4152. if( document.getElementById(\"canvas_input0\") ){\
  4153.  var p = 0;var input_reply = new Array();\
  4154.  if( document.getElementById(\"canvas_input0\")){\
  4155.   var t = 0;\
  4156.   while(document.getElementById(\"canvas_input\"+t)){\
  4157.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4158.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4159.     p++;\
  4160.    };\
  4161.    t++;\
  4162.   };\
  4163.  };\
  4164.  if( typeof userdraw_text != 'undefined' ){\
  4165.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4166.  }\
  4167.  else\
  4168.  {\
  4169.   return reply +\"\\n\"+input_reply;\
  4170.  }\
  4171. }\
  4172. else\
  4173. {\
  4174.  if( typeof userdraw_text != 'undefined' ){\
  4175.   return reply +\"\\n\"+userdraw_text;\
  4176.  }\
  4177.  else\
  4178.  {\
  4179.   return reply;\
  4180.  }\
  4181. };\
  4182. };\
  4183. this.read_canvas = read_canvas;\n\
  4184. <!-- end function 14 read_canvas() -->");
  4185.     break;
  4186.     case 15: fprintf(js_include_file,"\
  4187. \n<!-- begin function 15  read_canvas() -->\n\
  4188. function read_canvas(){\
  4189. var input_reply = new Array();\
  4190. var p = 0;\
  4191. if( document.getElementById(\"canvas_input0\")){\
  4192.  var t = 0;\
  4193.  while(document.getElementById(\"canvas_input\"+t)){\
  4194.   if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4195.    input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4196.    p++;\
  4197.   };\
  4198.   t++;\
  4199.  };\
  4200. };\
  4201. if( typeof userdraw_text != 'undefined' ){\
  4202.   return input_reply +\"\\n\"+userdraw_text;\
  4203. }\
  4204. else\
  4205. {\
  4206.  return input_reply;\
  4207. };\
  4208. };\
  4209. this.read_canvas = read_canvas;\n\
  4210. <!-- end function 15 read_canvas() -->");
  4211.     break;
  4212.     case 16: fprintf(js_include_file,"\
  4213. \n<!-- begin function 16 read_mathml() -->\n\
  4214. function read_mathml(){\
  4215. var reply = new Array();\
  4216. var p = 0;\
  4217. if( document.getElementById(\"mathml0\")){\
  4218.  while(document.getElementById(\"mathml\"+p)){\
  4219.   reply[p] = document.getElementById(\"mathml\"+p).value;\
  4220.   p++;\
  4221.  };\
  4222. };\
  4223. return reply;\
  4224. };\
  4225. this.read_mathml = read_mathml;\n\
  4226. <!-- end function 16 read_mathml() -->");
  4227.     break;
  4228.     case 17:  fprintf(js_include_file,"\
  4229. \n<!-- begin function 17 read_canvas() -->\n\
  4230. function read_canvas(){\
  4231. if( userdraw_text.length == 0){alert(\"no text typed...\");return;}\
  4232. return userdraw_text;\
  4233. };\
  4234. this.read_canvas = read_canvas;\n\
  4235. <!-- end function 17 read_canvas() -->");
  4236.     break;
  4237.     case 18: fprintf(js_include_file,"\
  4238. \n<!-- begin function 18 read_canvas() -->\n\
  4239. function read_canvas(){\
  4240. var p = 0;\
  4241. var reply = new Array();\
  4242. var name;\
  4243. var t = true;\
  4244. var h;var m;var s;\
  4245. while(t){\
  4246.  try{\
  4247.   name = eval('clocks'+p);\
  4248.   h = name.H;m = name.M;s = name.S;\
  4249.   if(s < 0){s = 60 + s;m = m - 1;};\
  4250.   if(m < 0){m = 60 + m;h = h - 1;};\
  4251.   if(h < 0){h = 12 + h;};\
  4252.   h = parseInt((h+m/60+s/3600)%%12);m = parseInt((m + s/60)%%60);s = parseInt(s%%60);\
  4253.   reply[p] = h+\":\"+m+\":\"+s;\
  4254.   p++;\
  4255.  }catch(e){t=false;};\
  4256. };\
  4257. if( p == 0 ){alert(\"clock(s) not modified...\");return;}\
  4258. return reply;\
  4259. };\
  4260. this.read_canvas = read_canvas;\n\
  4261. <!-- end function 18 read_canvas() -->");
  4262.     break;
  4263.     case 19: fprintf(js_include_file,"\
  4264. \n<!-- begin function 19 read_canvas() -->\n\
  4265. function read_canvas(){\
  4266. return reply[0];\
  4267. };\
  4268. this.read_canvas = read_canvas;\n\
  4269. <!-- end function 19 read_canvas() -->");
  4270.     case 20: fprintf(js_include_file,"\
  4271. \n<!-- begin function 20 read_canvas() -->\n\
  4272. function read_canvas(){\
  4273. var prec = %d;\
  4274. var len  = ext_drag_images.length;\
  4275. var reply = new Array(len);\
  4276. for(var p = 0 ; p < len ; p++){\
  4277.    var img = ext_drag_images[p];\
  4278.    reply[p] = (Math.round(prec*(px2x(img[6]))))/prec+\":\"+(Math.round(prec*(px2y(img[7]))))/prec;\
  4279. };\
  4280. return reply;\
  4281. };\
  4282. this.read_canvas = read_canvas;\n\
  4283. <!-- end function 20 read_canvas() -->",reply_precision);
  4284.     break;
  4285.     case 21: fprintf(js_include_file,"\
  4286. \n<!-- begin function 21 read_canvas() -->\n\
  4287. function read_canvas(){\
  4288. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  4289. var reply_coord = new Array();var p = 0;\
  4290. var prec = %d;\
  4291. while(userdraw_x[p]){\
  4292.  reply_coord[p] = \"(\"+(Math.round(prec*(px2x(userdraw_x[p]))))/prec+\":\"+(Math.round(prec*(px2y(userdraw_y[p]))))/prec+\")\";\
  4293.  p++;\
  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_coord+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4310.  }\
  4311.  else\
  4312.  {\
  4313.   return reply_coord+\"\\n\"+input_reply;\
  4314.  }\
  4315. }\
  4316. else\
  4317. {\
  4318.  if( typeof userdraw_text != 'undefined' ){\
  4319.   return reply_coord+\"\\n\"+userdraw_text;\
  4320.  }\
  4321.  else\
  4322.  {\
  4323.   return reply_coord;\
  4324.  };\
  4325. };\
  4326. };\
  4327. this.read_canvas = read_canvas;\n\
  4328. <!-- end function 21 read_canvas() -->",reply_precision);
  4329.     break;
  4330.     case 22: fprintf(js_include_file,"\
  4331. \n<!-- begin function 22 read_canvas() -->\n\
  4332. function read_canvas(){\
  4333. var reply = new Array();\
  4334. var lu = userdraw_x.length;\
  4335. if(lu == 0){alert(\"nothing drawn...\");return;};\
  4336. var idx = 0;\
  4337. var prec = %d;\
  4338. for(var p = 0 ; p < lu ; p++){\
  4339.  reply[idx] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec;idx++;\
  4340.  reply[idx] = (Math.round(prec*(px2y(userdraw_y[p]))))/prec;idx++;\
  4341. };\
  4342. if( document.getElementById(\"canvas_input0\") ){\
  4343.  var p = 0;var input_reply = new Array();\
  4344.  if( document.getElementById(\"canvas_input0\")){\
  4345.   var t = 0;\
  4346.   while(document.getElementById(\"canvas_input\"+t)){\
  4347.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4348.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4349.     p++;\
  4350.    };\
  4351.    t++;\
  4352.   };\
  4353.  };\
  4354.  if( typeof userdraw_text != 'undefined' ){\
  4355.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4356.  }\
  4357.  else\
  4358.  {\
  4359.   return reply +\"\\n\"+input_reply;\
  4360.  }\
  4361. }\
  4362. else\
  4363. {\
  4364.  if( typeof userdraw_text != 'undefined' ){\
  4365.   return reply +\"\\n\"+userdraw_text;\
  4366.  }\
  4367.  else\
  4368.  {\
  4369.   return reply;\
  4370.  }\
  4371. };\
  4372. };\
  4373. this.read_canvas = read_canvas;\n\
  4374. <!-- end function 22 read_canvas() -->",reply_precision);
  4375.     break;
  4376.     case 23: fprintf(js_include_file,"\
  4377. \n<!-- begin function 23 read_canvas() default 5 px marge -->\n\
  4378. function read_canvas(){\
  4379. if( userdraw_x.length < 2){alert(\"nothing drawn...\");return;}\
  4380. var lu = userdraw_x.length;\
  4381. if( lu != userdraw_y.length ){ alert(\"x / y mismatch !\");return;}\
  4382. var reply_x = new Array();var reply_y = new Array();\
  4383. var marge = 5;var p = 0;\
  4384. var prec = %d;\
  4385. for(var i = 0; i < lu - 1 ; i++ ){\
  4386.  if( Math.abs(userdraw_x[i] - userdraw_x[i+1])){\
  4387.   reply_x[p] = (Math.round(prec*(px2x(userdraw_x[i]))))/prec;reply_y[p] = (Math.round(prec*(px2y(userdraw_y[i]))))/prec;\
  4388.   if( isNaN(reply_x[p]) || isNaN(reply_y[p]) ){ alert(\"hmmmm ?\");return; };\
  4389.   p++;\
  4390.  };\
  4391.  reply_x[p] = (Math.round(prec*(px2x(userdraw_x[lu-1]))))/prec;reply_y[p] = (Math.round(prec*(px2y(userdraw_y[lu-1]))))/prec;\
  4392. };\
  4393. if( document.getElementById(\"canvas_input0\")){\
  4394.  var p = 0;var input_reply = new Array();\
  4395.  if( document.getElementById(\"canvas_input0\")){\
  4396.   var t = 0;\
  4397.   while(document.getElementById(\"canvas_input\"+t)){\
  4398.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4399.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4400.     p++;\
  4401.    };\
  4402.    t++;\
  4403.   };\
  4404.  };\
  4405.  if( typeof userdraw_text != 'undefined' ){\
  4406.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4407.  }\
  4408.  else\
  4409.  {\
  4410.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply;\
  4411.  }\
  4412. }\
  4413. else\
  4414. {\
  4415.  if( typeof userdraw_text != 'undefined' ){\
  4416.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_text;\
  4417.  }\
  4418.  else\
  4419.  {\
  4420.   return reply_x+\"\\n\"+reply_y;\
  4421.  };\
  4422. };\
  4423. };\
  4424. this.read_canvas = read_canvas;\n\
  4425. <!-- end function 23 read_canvas() -->",reply_precision);
  4426.     break;
  4427.     case 24: fprintf(js_include_file,"\n\
  4428. <!-- begin function 24  read_canvas() -->\n\
  4429. function read_canvas(){\
  4430. var input_reply = new Array();\
  4431. var p = 0;\
  4432. if( document.getElementById(\"canvas_input0\")){\
  4433.  while(document.getElementById(\"canvas_input\"+p)){\
  4434.    input_reply[p] = document.getElementById(\"canvas_input\"+p).value;\
  4435.    p++;\
  4436.  };\
  4437.  return input_reply;\
  4438. };\
  4439. };\
  4440. this.read_canvas = read_canvas;\n\
  4441. <!-- end function 24 read_canvas() -->");
  4442.     break;
  4443.     case 25:
  4444.     fprintf(js_include_file,"\n<!-- begin function 25 read_canvas() : angle(s) in degrees-->\n\
  4445. function read_canvas(){\
  4446. if( userdraw_radius.length < 1){alert(\"nothing drawn...\");return;}\
  4447. var lu = userdraw_radius.length;\
  4448. var prec = %d;\
  4449. var angle_reply = new Array(lu);\
  4450. for(var p = 0 ; p < lu ; p++){\
  4451.  angle_reply[p] = (Math.round(prec*180*(userdraw_radius[p])/Math.PI))/prec;\
  4452. };\
  4453. return angle_reply;\
  4454. };\
  4455. this.read_canvas = read_canvas;\n\
  4456. <!-- end function 25 read_canvas() -->",reply_precision);
  4457.     break;
  4458.     case 26:
  4459.     fprintf(js_include_file,"\n<!-- begin function 25 read_canvas() : angle(s) in radians-->\n\
  4460. function read_canvas(){\
  4461. if( userdraw_radius.length < 1){alert(\"nothing drawn...\");return;}\
  4462. var lu = userdraw_radius.length;\
  4463. var prec = %d;\
  4464. var angle_reply = new Array(lu);\
  4465. for(var p = 0 ; p < lu ; p++){\
  4466.  angle_reply[p] = (Math.round(prec*(userdraw_radius[p])))/prec;\
  4467. };\
  4468. return angle_reply;\
  4469. };\
  4470. this.read_canvas = read_canvas;\n\
  4471. <!-- end function 25 read_canvas() -->",reply_precision);
  4472.     break;
  4473.     default: canvas_error("hmmm unknown replyformat...");break;
  4474. }
  4475.  return;
  4476. }
  4477.  
  4478.  
  4479. /*
  4480.  add drawfunction :
  4481.  - functions used by userdraw_primitives (circle,rect,path,triangle...)
  4482.  - things not covered by the drag&drop library (static objects like parallel, lattice ,gridfill , imagefill)
  4483.  - grid / mathml
  4484.  - will not scale or zoom in
  4485.  - will not be filled via pixel operations like fill / floodfill / filltoborder / clickfill
  4486.  - is printed directly into 'js_include_file'
  4487. */
  4488.  
  4489. void add_javascript_functions(int js_functions[],int canvas_root_id){
  4490. int i;
  4491. for(i = 0 ; i < MAX_JS_FUNCTIONS; i++){
  4492.  if( js_functions[i] == 1){
  4493.     switch(i){
  4494.     case DRAG_EXTERNAL_IMAGE:
  4495. fprintf(js_include_file,"\n<!-- drag external images --->\n\
  4496. var external_canvas = create_canvas%d(7,xsize,ysize);\
  4497. var external_ctx = external_canvas.getContext(\"2d\");\
  4498. var external_canvas_rect = external_canvas.getBoundingClientRect();\
  4499. canvas_div.addEventListener(\"mousedown\",setxy,false);\
  4500. canvas_div.addEventListener(\"mouseup\",dragstop,false);\
  4501. canvas_div.addEventListener(\"mousemove\",dragxy,false);\
  4502. var selected_image = null;\
  4503. var ext_image_cnt = 0;\
  4504. var ext_drag_images = new Array();\
  4505. function drag_external_image(URL,sx,sy,swidth,sheight,x0,y0,width,height,idx,draggable){\
  4506. ext_image_cnt = idx;\
  4507. var image = new Image();\
  4508. image.src = URL;\
  4509. image.onload = function(){\
  4510.  if( x0 < 1 ){ x0 = 0; };if( y0 < 1 ){ y0 = 0; };if( sx < 1 ){ sx = 0; };if( sy < 1 ){ sy = 0; };\
  4511.  if( width < 1 ){ width = image.width; };if( height < 1 ){ height = image.height; };\
  4512.  if( swidth < 1 ){ swidth = image.width; };if( sheight < 1 ){ sheight = image.height; };\
  4513.  img = new Array(10);\
  4514.  img[0] = draggable;img[1] = image;img[2] = sx;img[3] = sy;img[4] = swidth;img[5] = sheight;\
  4515.  img[6] = x0;img[7] = y0;img[8] = width;img[9] = height;\
  4516.  ext_drag_images[idx] = img;\
  4517.  external_ctx.drawImage(img[1],img[2],img[3],img[4],img[5],img[6],img[7],img[8],img[9]);\
  4518. };\
  4519. };\
  4520. function dragstop(evt){\
  4521. selected_image = null;return;\
  4522. };\
  4523. function dragxy(evt){\
  4524. if( selected_image != null ){\
  4525.  var xoff = (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft);\
  4526.  var yoff = (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);\
  4527.  var s_img = ext_drag_images[selected_image];\
  4528.  s_img[6] = evt.clientX - external_canvas_rect.left + xoff;\
  4529.  s_img[7] = evt.clientY - external_canvas_rect.top + yoff;\
  4530.  ext_drag_images[selected_image] = s_img;\
  4531.  external_ctx.clearRect(0,0,xsize,ysize);\
  4532.  for(var i = 0; i <= ext_image_cnt ; i++){\
  4533.   var img = ext_drag_images[i];\
  4534.   external_ctx.drawImage(img[1],img[2],img[3],img[4],img[5],img[6],img[7],img[8],img[9]);\
  4535.  };\
  4536. };\
  4537. };\
  4538. function setxy(evt){\
  4539. if( ! selected_image && evt.which == 1 ){\
  4540.  var xoff = (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft);\
  4541.  var yoff = (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);\
  4542.  var xm = evt.clientX - external_canvas_rect.left + xoff;\
  4543.  var ym = evt.clientY - external_canvas_rect.top + yoff;\
  4544.  for(var p = 0 ; p <= ext_image_cnt ; p++){\
  4545.   var img = ext_drag_images[p];\
  4546.   if( img[0] == 1 ){\
  4547.    var w = img.width;\
  4548.    var h = img.height;\
  4549.    if( xm > img[6] && xm < img[6] + img[4]){\
  4550.     if( ym > img[7] && ym < img[7] + img[5]){\
  4551.      img[6] = xm;\
  4552.      img[7] = ym;\
  4553.      ext_drag_images[p] = img;\
  4554.      selected_image = p;\
  4555.      dragxy(evt);\
  4556.     };\
  4557.    };\
  4558.   };\
  4559.  };\
  4560. }\
  4561. else\
  4562. {\
  4563.  selected_image = null;\
  4564. };\
  4565. };",canvas_root_id);
  4566.     break;
  4567.  
  4568.     case DRAW_EXTERNAL_IMAGE:
  4569. fprintf(js_include_file,"\n<!-- draw external images -->\n\
  4570. draw_external_image = function(URL,sx,sy,swidth,sheight,x0,y0,width,height,draggable){\
  4571. var image = new Image();\
  4572. image.src = URL;\
  4573. var canvas_bg_div = document.getElementById(\"canvas_div%d\");\
  4574. image.onload = function(){\
  4575.  if( x0 < 1 ){ x0 = 0; };\
  4576.  if( y0 < 1 ){ y0 = 0; };\
  4577.  if( sx < 1 ){ sx = 0; };\
  4578.  if( sy < 1 ){ sy = 0; };\
  4579.  if( width < 1 ){ width = image.width;};\
  4580.  if( height < 1 ){ height = image.height;};\
  4581.  if( swidth < 1 ){ swidth = image.width;};\
  4582.  if( sheight < 1 ){ sheight = image.height;};\
  4583.  var ml = x0 - sx;\
  4584.  var mh = y0 - sy;\
  4585.  canvas_bg_div.style.backgroundPosition= \"left \"+ml+\"px top \"+mh+\"px\";\
  4586.  canvas_bg_div.style.backgroundSize = width+\"px \"+height+\"px\";\
  4587.  canvas_bg_div.style.backgroundRepeat = \"no-repeat\";\
  4588.  canvas_bg_div.style.backgroundPosition= sx+\"px \"+sy+\"px\";\
  4589.  canvas_bg_div.style.backgroundImage = \"url(\" + URL + \")\";\
  4590. };\
  4591. };",canvas_root_id);    
  4592.     break;
  4593.     case DRAW_GRIDFILL:/* not used for userdraw */
  4594. fprintf(js_include_file,"\n<!-- draw gridfill -->\n\
  4595. draw_gridfill = function(canvas_type,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize){\
  4596. var obj;\
  4597. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4598.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4599. }\
  4600. else\
  4601. {\
  4602.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4603. };\
  4604. var ctx = obj.getContext(\"2d\");\
  4605. var x,y;\
  4606. snap_x = dx;snap_y = dy;\
  4607. ctx.save();\
  4608. ctx.strokeStyle=\"rgba(\"+color+\",\"+opacity+\")\";\
  4609. for( x = x0 ; x < xsize+dx ; x = x + dx ){\
  4610.    ctx.moveTo(x,y0);\
  4611.    ctx.lineTo(x,ysize);\
  4612. };\
  4613. for( y = y0 ; y < ysize+dy; y = y + dy ){\
  4614.    ctx.moveTo(x0,y);\
  4615.    ctx.lineTo(xsize,y);\
  4616. };\
  4617. ctx.stroke();\
  4618. ctx.restore();\
  4619. return;};",canvas_root_id,canvas_root_id,canvas_root_id);
  4620.     break;
  4621.    
  4622.     case DRAW_IMAGEFILL:/* not  used for userdraw */
  4623. fprintf(js_include_file,"\n<!-- draw imagefill -->\n\
  4624. draw_imagefill = function(canvas_type,x0,y0,URL,xsize,ysize){\
  4625. var obj;\
  4626. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4627.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4628. }\
  4629. else\
  4630. {\
  4631.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4632. };\
  4633. var ctx = obj.getContext(\"2d\");\
  4634. ctx.save();\
  4635. var img = new Image();\
  4636. img.src = URL;\
  4637. img.onload = function(){\
  4638.  if( (img.width > xsize-x0) && (img.height > ysize-y0) ){\
  4639.    ctx.drawImage(img,x0,y0,xsize,ysize);\
  4640.  }\
  4641.  else\
  4642.  {\
  4643.    var repeat = \"repeat\";\
  4644.    if(img.width > xsize - x0){\
  4645.         repeat = \"repeat-y\";\
  4646.    }\
  4647.    else\
  4648.    {\
  4649.     if( img.height > ysize -x0 ){\
  4650.      repeat = \"repeat-x\";\
  4651.     }\
  4652.    }\
  4653.    var pattern = ctx.createPattern(img,repeat);\
  4654.    ctx.rect(x0,y0,xsize,ysize);\
  4655.    ctx.fillStyle = pattern;\
  4656.  }\
  4657.  ctx.fill();\
  4658. };\
  4659. ctx.restore();\
  4660. return;\
  4661. };",canvas_root_id,canvas_root_id,canvas_root_id);
  4662.     break;
  4663.    
  4664.     case DRAW_DOTFILL:/* not  used for userdraw */
  4665. fprintf(js_include_file,"\n<!-- draw dotfill -->\n\
  4666. draw_dotfill = function(canvas_type,x0,y0,dx,dy,radius,color,opacity,xsize,ysize){\
  4667. var obj;\
  4668. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4669.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4670. }\
  4671. else\
  4672. {\
  4673.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4674. };\
  4675. var ctx = obj.getContext(\"2d\");\
  4676. var x,y;\
  4677. ctx.closePath();\
  4678. ctx.save();\
  4679. snap_x = dx;snap_y = dy;\
  4680. ctx.fillStyle=\"rgba(\"+color+\",\"+opacity+\")\";\
  4681. for( x = x0 ; x < xsize+dx ; x = x + dx ){\
  4682.  for( y = y0 ; y < ysize+dy ; y = y + dy ){\
  4683.   ctx.arc(x,y,radius,0,2*Math.PI,false);\
  4684.   ctx.closePath();\
  4685.  }\
  4686. }\
  4687. ctx.fill();\
  4688. ctx.restore();\
  4689. return;};",canvas_root_id,canvas_root_id,canvas_root_id);
  4690.     break;
  4691.  
  4692.     case DRAW_DIAMONDFILL:/* not used for userdraw */
  4693. fprintf(js_include_file,"\n<!-- draw hatch fill -->\n\
  4694. draw_diamondfill = function(canvas_type,x0,y0,dx,dy,linewidth,stroke_color,stroke_opacity,xsize,ysize){\
  4695.  var obj;\
  4696. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4697.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4698. }\
  4699. else\
  4700. {\
  4701.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4702. };\
  4703. var ctx = obj.getContext(\"2d\");\
  4704. var x;\
  4705. var y;\
  4706. ctx.save();\
  4707. ctx.lineWidth = linewidth;\
  4708. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4709. y = ysize;\
  4710. for( x = x0 ; x < xsize ; x = x + dx ){\
  4711.  ctx.moveTo(x,y0);\
  4712.  ctx.lineTo(xsize,y);\
  4713.  y = y - dy;\
  4714. };\
  4715. y = y0;\
  4716. for( x = xsize ; x > 0 ; x = x - dx){\
  4717.  ctx.moveTo(x,ysize);\
  4718.  ctx.lineTo(x0,y);\
  4719.  y = y + dy;\
  4720. };\
  4721. x = x0;\
  4722. for( y = y0 ; y < ysize ; y = y + dy ){\
  4723.  ctx.moveTo(xsize,y);\
  4724.  ctx.lineTo(x,ysize);\
  4725.  x = x + dx;\
  4726. };\
  4727. x = xsize;\
  4728. for( y = ysize ; y > y0 ; y = y - dy ){\
  4729.  ctx.moveTo(x,y0);\
  4730.  ctx.lineTo(x0,y);\
  4731.  x = x - dx;\
  4732. };\
  4733. ctx.stroke();\
  4734. ctx.restore();\
  4735. return;\
  4736. }",canvas_root_id,canvas_root_id,canvas_root_id);
  4737.     break;
  4738.    
  4739.     case DRAW_HATCHFILL:/* not used for userdraw */
  4740. fprintf(js_include_file,"\n<!-- draw hatch fill -->\n\
  4741. draw_hatchfill = function(canvas_type,x0,y0,dx,dy,linewidth,stroke_color,stroke_opacity,xsize,ysize){\
  4742.  var obj;\
  4743. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4744.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4745. }\
  4746. else\
  4747. {\
  4748.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4749. };\
  4750. var ctx = obj.getContext(\"2d\");\
  4751. var x;\
  4752. var y;\
  4753. ctx.save();\
  4754. ctx.lineWidth = linewidth;\
  4755. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4756. y = ysize;\
  4757. for( x = x0 ; x < xsize ; x = x + dx ){\
  4758.  ctx.moveTo(x,y0);\
  4759.  ctx.lineTo(xsize,y);\
  4760.  y = y - dy;\
  4761. };\
  4762. y = y0;\
  4763. for( x = xsize ; x >= dx ; x = x - dx){\
  4764.  ctx.moveTo(x,ysize);\
  4765.  ctx.lineTo(x0,y);\
  4766.  y = y + dy;\
  4767. };\
  4768. ctx.stroke();\
  4769. ctx.restore();\
  4770. return;\
  4771. };",canvas_root_id,canvas_root_id,canvas_root_id);
  4772.     break;
  4773.     case DRAW_CIRCLES:/*  used for userdraw */
  4774. fprintf(js_include_file,"\n<!-- draw circles -->\n\
  4775. 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){\
  4776. ctx.save();\
  4777. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  4778. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4779. ctx.lineWidth = line_width;\
  4780. for(var p = 0 ; p < x_points.length ; p++ ){\
  4781.  ctx.beginPath();\
  4782.  ctx.arc(x_points[p],y_points[p],radius[p],0,2*Math.PI,false);\
  4783.  ctx.closePath();\
  4784.  if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4785.  if(use_filled == 1){ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();}\
  4786.  ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4787.  ctx.stroke();\
  4788. }\
  4789. ctx.restore();\
  4790. return;\
  4791. };");
  4792.     break;
  4793.     case DRAW_POLYLINE:/* user for userdraw : draw lines through points */
  4794. fprintf(js_include_file,"\n<!-- draw polyline -->\n\
  4795. 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){\
  4796. ctx.save();\
  4797. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  4798. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4799. ctx.lineWidth = line_width;\
  4800. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4801. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4802. ctx.clearRect(0,0,xsize,ysize);\
  4803. ctx.beginPath();\
  4804. for(var p = 0 ; p < x_points.length-1 ; p++ ){\
  4805.  ctx.moveTo(x_points[p],y_points[p]);\
  4806.  ctx.lineTo(x_points[p+1],y_points[p+1]);\
  4807. }\
  4808. ctx.closePath();\
  4809. ctx.stroke();\
  4810. ctx.fillStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4811. for(var p = 0 ; p < x_points.length ; p++ ){\
  4812.  ctx.beginPath();\
  4813.  ctx.arc(x_points[p],y_points[p],line_width,0,2*Math.PI,false);\
  4814.  ctx.closePath();ctx.fill();ctx.stroke();\
  4815. };\
  4816. ctx.restore();\
  4817. return;\
  4818. };");
  4819.     break;
  4820.    
  4821.     case DRAW_SEGMENTS:/*  used for userdraw */
  4822. fprintf(js_include_file,"\n<!-- draw segments -->\n\
  4823. 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){\
  4824. ctx.save();\
  4825. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  4826. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4827. ctx.lineWidth = line_width;\
  4828. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4829. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4830. for(var p = 0 ; p < x_points.length ; p = p+2 ){\
  4831.  ctx.beginPath();\
  4832.  ctx.moveTo(x_points[p],y_points[p]);\
  4833.  ctx.lineTo(x_points[p+1],y_points[p+1]);\
  4834.  ctx.closePath();\
  4835.  ctx.stroke();\
  4836.  }\
  4837.  ctx.restore();\
  4838.  return;\
  4839. };");
  4840.     break;
  4841.    
  4842.     case DRAW_LINES:/*  used for userdraw */
  4843. fprintf(js_include_file,"\n<!-- draw lines -->\n\
  4844. function calc_line(x1,x2,y1,y2){\
  4845. var marge = 2;\
  4846. if(x1 < x2+marge && x1>x2-marge){\
  4847.  return [x1,0,x1,ysize];\
  4848. };\
  4849. if(y1 < y2+marge && y1>y2-marge){\
  4850.  return [0,y1,xsize,y1];\
  4851. };\
  4852. var Y1 = y1 - (x1)*(y2 - y1)/(x2 - x1);\
  4853. var Y2 = y1 + (xsize - x1)*(y2 - y1)/(x2 - x1);\
  4854. return [0,Y1,xsize,Y2];\
  4855. };\
  4856. 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){\
  4857. ctx.save();\
  4858. var line = new Array(4);\
  4859. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  4860. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4861. ctx.lineWidth = line_width;\
  4862. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4863. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4864. for(var p = 0 ; p < x_points.length ; p = p+2 ){\
  4865.  line = calc_line(x_points[p],x_points[p+1],y_points[p],y_points[p+1]);\
  4866.  ctx.beginPath();\
  4867.  ctx.moveTo(line[0],line[1]);\
  4868.  ctx.lineTo(line[2],line[3]);\
  4869.  ctx.closePath();\
  4870.  ctx.stroke();\
  4871.  }\
  4872.  ctx.restore();\
  4873.  return;\
  4874. };");
  4875.     break;
  4876.  
  4877.     case DRAW_CROSSHAIRS:/*  used for userdraw */
  4878. fprintf(js_include_file,"\n<!-- draw crosshairs  -->\n\
  4879. draw_crosshairs = function(ctx,x_points,y_points,line_width,crosshair_size,stroke_color,stroke_opacity,use_rotate,angle,use_affine,affine_matrix){\
  4880. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  4881. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4882. ctx.lineWidth = line_width;\
  4883. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4884. var x1,x2,y1,y2;\
  4885. for(var p = 0 ; p < x_points.length ; p++ ){\
  4886.  x1 = x_points[p] - crosshair_size;\
  4887.  x2 = x_points[p] + crosshair_size;\
  4888.  y1 = y_points[p] - crosshair_size;\
  4889.  y2 = y_points[p] + crosshair_size;\
  4890.  ctx.beginPath();\
  4891.  ctx.moveTo(x1,y1);\
  4892.  ctx.lineTo(x2,y2);\
  4893.  ctx.closePath();\
  4894.  ctx.stroke();\
  4895.  ctx.beginPath();\
  4896.  ctx.moveTo(x2,y1);\
  4897.  ctx.lineTo(x1,y2);\
  4898.  ctx.closePath();\
  4899.  ctx.stroke();\
  4900. }\
  4901. ctx.restore();\
  4902.  return;\
  4903. };");
  4904.     break;
  4905.  
  4906.     case DRAW_RECTS:/*  used for userdraw */
  4907. fprintf(js_include_file,"\n<!-- draw rects -->\n\
  4908. 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){\
  4909. ctx.save();\
  4910. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  4911. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4912. ctx.lineWidth = line_width;\
  4913. ctx.strokeStyle = \"rgba('+stroke_color+','+stroke_opacity+')\";\
  4914. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];}};\
  4915. for(var p = 0 ; p < x_points.length ; p = p + 2){\
  4916.  ctx.beginPath();\
  4917.  ctx.rect(x_points[p],y_points[p],x_points[p+1]-x_points[p],y_points[p+1]-y_points[p]);\
  4918.  ctx.closePath();\
  4919.  if(use_filled == 1 ){ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();}\
  4920.  ctx.stroke();\
  4921. };\
  4922. ctx.restore();\
  4923. return;\
  4924. };");
  4925.     break;
  4926.  
  4927.     case DRAW_ROUNDRECTS:/*  used for userdraw */
  4928. fprintf(js_include_file,"\n<!-- draw round rects -->\n\
  4929. 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){\
  4930. ctx.save();\
  4931. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  4932. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4933. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4934. var x,y,w,h,r;\
  4935. for(var p = 0; p < x_points.length; p = p+2){\
  4936.  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);\
  4937.  ctx.beginPath();ctx.moveTo(x + r, y);\
  4938.  ctx.lineTo(x + w - r, y);\
  4939.  ctx.quadraticCurveTo(x + w, y, x + w, y + r);\
  4940.  ctx.lineTo(x + w, y + h - r);\
  4941.  ctx.quadraticCurveTo(x + w, y + h, x + w - r, y + h);\
  4942.  ctx.lineTo(x + r, y + h);\
  4943.  ctx.quadraticCurveTo(x, y + h, x, y + h - r);\
  4944.  ctx.lineTo(x, y + r);\
  4945.  ctx.quadraticCurveTo(x, y, x + r, y);\
  4946.  ctx.closePath();if( use_dashed == 1 ){ctx.setLineDash([dashtype0,dashtype1]);};\
  4947.  ctx.strokeStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4948.  if( use_filled == 1 ){ctx.fillStyle =\"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();};\
  4949.  ctx.stroke();\
  4950. }\
  4951. ctx.restore();\
  4952. };");
  4953.     break;
  4954.  
  4955.     case DRAW_ELLIPSES:/* not  used for userdraw */
  4956. fprintf(js_include_file,"\n<!-- draw ellipses -->\n\
  4957. 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){\
  4958. var obj;\
  4959. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4960.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4961. }\
  4962. else\
  4963. {\
  4964.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4965. };\
  4966. var ctx = obj.getContext(\"2d\");\
  4967. ctx.save();\
  4968. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  4969. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4970. var cx,cy,ry,rx;\
  4971. ctx.lineWidth = line_width;\
  4972. if( use_filled == 1 ){ctx.fillStyle =\"rgba(\"+fill_color+\",\"+fill_opacity+\")\";};\
  4973. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4974. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4975. for(var p=0;p< x_points.length;p = p+2){\
  4976.  ctx.beginPath();\
  4977.  cx = x_points[p];cy = y_points[p];rx = 0.25*x_points[p+1];ry = 0.25*y_points[p+1];\
  4978.  ctx.translate(cx - rx, cy - ry);\
  4979.  ctx.scale(rx, ry);\
  4980.  ctx.arc(1, 1, 1, 0, 2 * Math.PI, false);\
  4981.  if( use_filled == 1 ){ctx.fill();}\
  4982.  ctx.stroke();\
  4983. };\
  4984. ctx.restore();\
  4985. };",canvas_root_id,canvas_root_id,canvas_root_id);
  4986.     break;
  4987.  
  4988.     case DRAW_PATHS: /*  used for userdraw */
  4989. fprintf(js_include_file,"\n<!-- draw paths -->\n\
  4990. 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){\
  4991. ctx.save();\
  4992. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  4993. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4994. ctx.lineWidth = line_width;\
  4995. ctx.lineJoin = \"round\";\
  4996. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4997. ctx.beginPath();\
  4998. ctx.moveTo(x_points[0],y_points[0]);\
  4999. for(var p = 1 ; p < x_points.length ; p++ ){ctx.lineTo(x_points[p],y_points[p]);}\
  5000. if(closed_path == 1){ctx.lineTo(x_points[0],y_points[0]);ctx.closePath();}\
  5001. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5002. if(use_filled == 1){ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();}\
  5003. ctx.stroke();\
  5004. ctx.restore();\
  5005. return;\
  5006. };");
  5007.    
  5008.     break;
  5009.     case DRAW_ARROWS:/*  used for userdraw */
  5010. fprintf(js_include_file,"\n<!-- draw arrows -->\n\
  5011. 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){\
  5012. ctx.save();\
  5013. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5014. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5015. ctx.strokeStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5016. ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5017. ctx.lineWidth = line_width;\
  5018. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5019. ctx.lineCap = \"round\";\
  5020. var x1,y1,x2,y2,dx,dy,len;\
  5021. for(var p = 0 ; p < x_points.length - 1 ; p = p +2){\
  5022.   ctx.save();\
  5023.   x1 = x_points[p];y1 = y_points[p];x2 = x_points[p+1];y2 = y_points[p+1];dx = x2 - x1;dy = y2 - y1;\
  5024.   len = Math.sqrt(dx*dx+dy*dy);\
  5025.   ctx.translate(x2,y2);\
  5026.   ctx.rotate(Math.atan2(dy,dx));\
  5027.   ctx.lineCap = \"round\";\
  5028.   ctx.beginPath();\
  5029.   ctx.moveTo(0,0);\
  5030.   ctx.lineTo(-len,0);\
  5031.   ctx.closePath();\
  5032.   ctx.stroke();\
  5033.   ctx.beginPath();\
  5034.   ctx.moveTo(0,0);\
  5035.   ctx.lineTo(-1*arrow_head,-0.5*arrow_head);\
  5036.   ctx.lineTo(-1*arrow_head, 0.5*arrow_head);\
  5037.   ctx.closePath();\
  5038.   ctx.fill();\
  5039.   ctx.restore();\
  5040.   if( type == 2 ){\
  5041.     ctx.save();\
  5042.     ctx.translate(x1,y1);\
  5043.     ctx.rotate(Math.atan2(-dy,-dx));\
  5044.     ctx.beginPath();\
  5045.     ctx.moveTo(0,0);\
  5046.     ctx.lineTo(-1*arrow_head,-0.5*arrow_head);\
  5047.     ctx.lineTo(-1*arrow_head, 0.5*arrow_head);\
  5048.     ctx.closePath();\
  5049.     ctx.stroke();\
  5050.     ctx.fill();\
  5051.     ctx.restore();\
  5052.   }\
  5053.  }\
  5054.  ctx.restore();\
  5055.  return;\
  5056. };");
  5057.     break;
  5058.  
  5059.     case DRAW_VIDEO:/* not  used for userdraw */
  5060. fprintf(js_include_file,"\n<!-- draw video -->\n\
  5061. draw_video = function(canvas_root_id,x,y,w,h,URL){\
  5062. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  5063. var video_div = document.createElement(\"div\");\
  5064. canvas_div.appendChild(video_div);\
  5065. video_div.style.position = \"absolute\";\
  5066. video_div.style.left = x+\"px\";\
  5067. video_div.style.top = y+\"px\";\
  5068. video_div.style.width = w+\"px\";\
  5069. video_div.style.height = h+\"px\";\
  5070. var video = document.createElement(\"video\");\
  5071. video_div.appendChild(video);\
  5072. video.style.width = w+\"px\";\
  5073. video.style.height = h+\"px\";\
  5074. video.autobuffer = true;\
  5075. video.controls = true;video.autoplay = false;\
  5076. var src = document.createElement(\"source\");\
  5077. src.type = \"video/mp4\";\
  5078. src.src = URL;\
  5079. video.appendChild(src);\
  5080. video.load();\
  5081. return;\
  5082. };");    
  5083.     break;
  5084.    
  5085.     case DRAW_AUDIO:/* not used for userdraw */
  5086. fprintf(js_include_file,"\n<!-- draw audio -->\n\
  5087. draw_audio = function(canvas_root_id,x,y,w,h,loop,visible,URL1,URL2){\
  5088. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  5089. var audio_div = document.createElement(\"div\");\
  5090. canvas_div.appendChild(audio_div);\
  5091. audio_div.style.position = \"absolute\";\
  5092. audio_div.style.left = x+\"px\";\
  5093. audio_div.style.top = y+\"px\";\
  5094. audio_div.style.width = w+\"px\";\
  5095. audio_div.style.height = h+\"px\";\
  5096. var audio = document.createElement(\"audio\");\
  5097. audio_div.appendChild(audio);\
  5098. audio.setAttribute(\"style\",\"width:\"+w+\"px;height:\"+h+\"px\");\
  5099. audio.autobuffer = true;\
  5100. if(visible == 1 ){ audio.controls = true;audio.autoplay = false;}else{ audio.controls = false;audio.autoplay = true;}\
  5101. if(loop == 1 ){ audio.loop = true;}else{ audio.loop = false;}\
  5102. var src1 = document.createElement(\"source\");\
  5103. src1.type = \"audio/ogg\";\
  5104. src1.src = URL1;\
  5105. audio.appendChild(src1);\
  5106. var src2 = document.createElement(\"source\");\
  5107. src2.type = \"audio/mpeg\";\
  5108. src2.src = URL2;\
  5109. audio.appendChild(src2);\
  5110. audio.load();\
  5111. return;\
  5112. };");
  5113.     break;
  5114.    
  5115.     case DRAW_HTTP:/* not  used for userdraw */
  5116. fprintf(js_include_file,"\n<!-- draw http -->\n\
  5117. draw_http = function(canvas_root_id,x,y,w,h,URL){\
  5118. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  5119. var http_div = document.createElement(\"div\");\
  5120. var iframe = document.createElement(\"iframe\");\
  5121. canvas_div.appendChild(http_div);\
  5122. http_div.appendChild(iframe);\
  5123. iframe.src = URL;\
  5124. iframe.setAttribute(\"width\",w);\
  5125. iframe.setAttribute(\"height\",h);\
  5126. return;\
  5127. };");
  5128.     break;
  5129.    
  5130.     case DRAW_XML:
  5131. fprintf(js_include_file,"\n<!-- draw xml -->\n\
  5132. draw_xml = function(canvas_root_id,x,y,w,h,mathml,onclick){\
  5133. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  5134. var xml_div = document.createElement(\"div\");\
  5135. canvas_div.appendChild(xml_div);\
  5136. xml_div.innerHTML = mathml;\
  5137. if(onclick != 0){\
  5138.  xml_div.onclick = function(){\
  5139.   reply[0] = onclick;\
  5140.   alert(\"send \"+onclick+\" ?\");\
  5141.  };\
  5142. };\
  5143. xml_div.style.position = \"absolute\";\
  5144. xml_div.style.left = x+\"px\";\
  5145. xml_div.style.top = y+\"px\";\
  5146. xml_div.style.width = w+\"px\";\
  5147. xml_div.style.height = h+\"px\";\
  5148. return;\
  5149. };"
  5150. );
  5151.     break;
  5152.     case DRAW_SGRAPH:
  5153. /*
  5154.  xstart = given
  5155.  ystart = given
  5156.  sgraph(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily)
  5157. */
  5158. fprintf(js_include_file,"\n<!-- draw sgraph -->\n\
  5159. draw_sgraph = function(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily,opacity,font_size){\
  5160. 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);};\
  5161. var ctx = obj.getContext(\"2d\");\
  5162. ctx.font = fontfamily;\
  5163. var minor_opacity = 0.8*opacity;\
  5164. ctx.clearRect(0,0,xsize,ysize);\
  5165. var zero_x = 0.1*xsize;\
  5166. var zero_y = 0.9*ysize;\
  5167. var snor_x;\
  5168. if( xstart != xmin){\
  5169.  snor_x = 0.1*xsize;\
  5170. }\
  5171. else\
  5172. {\
  5173.  snor_x = 0;\
  5174.  xstart = xmin;\
  5175. };\
  5176. ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  5177. ctx.lineWidth = 2;\
  5178. ctx.beginPath();\
  5179. ctx.moveTo(xsize,zero_y);\
  5180. ctx.lineTo(zero_x,zero_y);\
  5181. ctx.lineTo(zero_x,0);\
  5182. ctx.stroke();\
  5183. ctx.closePath();\
  5184. ctx.beginPath();\
  5185. ctx.moveTo(zero_x,zero_y);\
  5186. ctx.lineTo(zero_x + 0.25*snor_x,zero_y - 0.1*snor_x);\
  5187. ctx.lineTo(zero_x + 0.5*snor_x,zero_y + 0.1*snor_x);\
  5188. ctx.lineTo(zero_x + 0.75*snor_x,zero_y - 0.1*snor_x);\
  5189. ctx.lineTo(zero_x + snor_x,zero_y);\
  5190. ctx.stroke();\
  5191. ctx.closePath();\
  5192. ctx.beginPath();\
  5193. var num = xstart;\
  5194. var flipflop = 1;\
  5195. var step_x = xmajor*(xsize - zero_x - snor_x)/(xmax - xstart);\
  5196. var txtsize;var txt_marge=step_x - 5;\
  5197. for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  5198.  txtsize = ctx.measureText(num).width;\
  5199.  if( txtsize > txt_marge ){if( flipflop == 1 ){flipflop = 0;}else{flipflop = 1;};};\
  5200.  if( flipflop == 1){\
  5201.   ctx.fillText(num,x - 0.5*txtsize,zero_y+font_size);\
  5202.  }\
  5203.  else\
  5204.  {\
  5205.   ctx.fillText(num,x - 0.5*txtsize,zero_y+2*font_size);\
  5206.  }\
  5207.  num = num + xmajor;\
  5208. };\
  5209. ctx.stroke();\
  5210. ctx.closePath();\
  5211. ctx.lineWidth = 1;\
  5212. ctx.beginPath();\
  5213. for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  5214.   ctx.moveTo(x,zero_y);\
  5215.   ctx.lineTo(x,0);\
  5216. };\
  5217. ctx.stroke();\
  5218. ctx.closePath();\
  5219. if( xminor > 1){\
  5220.  ctx.lineWidth = 0.5;\
  5221.  ctx.beginPath();\
  5222.  ctx.strokeStyle = \"rgba(\"+minorcolor+\",\"+minor_opacity+\")\";\
  5223.  var minor_step_x = step_x / xminor;\
  5224.  var nx;\
  5225.  for(var x = zero_x+snor_x; x < xsize;x = x + step_x){\
  5226.    num = 1;\
  5227.    for(var p = 1 ; p < xminor ; p++){\
  5228.     nx = x + num*minor_step_x;\
  5229.     ctx.moveTo(nx,zero_y);\
  5230.     ctx.lineTo(nx,0);\
  5231.     num++;\
  5232.    };\
  5233.  };\
  5234.  ctx.stroke();\
  5235.  ctx.closePath();\
  5236.  ctx.beginPath();\
  5237.  ctx.lineWidth = 2;\
  5238.  ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  5239.  for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  5240.   ctx.moveTo(x,zero_y);ctx.lineTo(x,zero_y - 12);\
  5241.  };\
  5242.  for(var x = zero_x+snor_x ; x < xsize;x = x + minor_step_x){\
  5243.   ctx.moveTo(x,zero_y);ctx.lineTo(x,zero_y - 6);\
  5244.  };\
  5245.  ctx.stroke();\
  5246.  ctx.closePath();\
  5247.  ctx.lineWidth = 0.5;\
  5248. };\
  5249. xmin = xstart - (xmajor*(zero_x+snor_x)/step_x);\
  5250. if( ystart != ymin){\
  5251.  snor_y = 0.1*ysize;\
  5252. }\
  5253. else\
  5254. {\
  5255.  snor_y = 0;\
  5256.  ystart = ymin;\
  5257. };\
  5258. ctx.lineWidth = 2;\
  5259. ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  5260. ctx.beginPath();\
  5261. ctx.moveTo(zero_x,zero_y);\
  5262. ctx.lineTo(zero_x - 0.1*snor_y,zero_y - 0.25*snor_y);\
  5263. ctx.lineTo(zero_x + 0.1*snor_y,zero_y - 0.5*snor_y);\
  5264. ctx.lineTo(zero_x - 0.1*snor_y,zero_y - 0.75*snor_y);\
  5265. ctx.lineTo(zero_x,zero_y - snor_y);\
  5266. ctx.stroke();\
  5267. ctx.closePath();\
  5268. ctx.beginPath();\
  5269. ctx.lineWidth = 1;\
  5270. num = ystart;\
  5271. var step_y = ymajor*(zero_y - snor_y)/(ymax - ystart);\
  5272. for(var y = zero_y - snor_y ; y > 0; y = y - step_y){\
  5273.  ctx.moveTo(zero_x,y);\
  5274.  ctx.lineTo(xsize,y);\
  5275.  ctx.fillText(num,zero_x - ctx.measureText(num+\" \").width,parseInt(y+0.2*font_size));\
  5276.  num = num + ymajor;\
  5277. };\
  5278. ctx.stroke();\
  5279. ctx.closePath();\
  5280. if( yminor > 1){\
  5281.  ctx.lineWidth = 0.5;\
  5282.  ctx.beginPath();\
  5283.  ctx.strokeStyle = \"rgba(\"+minorcolor+\",\"+minor_opacity+\")\";\
  5284.  var minor_step_y = step_y / yminor;\
  5285.  var ny;\
  5286.  for(var y = 0 ; y < zero_y - snor_y ;y = y + step_y){\
  5287.   num = 1;\
  5288.   for(var p = 1 ;p < yminor;p++){\
  5289.     ny = y + num*minor_step_y;\
  5290.     ctx.moveTo(zero_x,ny);\
  5291.     ctx.lineTo(xsize,ny);\
  5292.     num++;\
  5293.    };\
  5294.  };\
  5295.  ctx.stroke();\
  5296.  ctx.closePath();\
  5297.  ctx.lineWidth = 2;\
  5298.  ctx.beginPath();\
  5299.  ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  5300.  for(var y = zero_y - snor_y ; y > 0 ;y = y - step_y){\
  5301.   ctx.moveTo(zero_x,y);\
  5302.   ctx.lineTo(zero_x+12,y);\
  5303.  };\
  5304.  for(var y = zero_y - snor_y ; y > 0 ;y = y - minor_step_y){\
  5305.   ctx.moveTo(zero_x,y);\
  5306.   ctx.lineTo(zero_x+6,y);\
  5307.  };\
  5308.  ctx.stroke();\
  5309.  ctx.closePath();\
  5310. };\
  5311. ymin = ystart - (ymajor*(ysize - zero_y + snor_y)/step_y);\
  5312. if( typeof legend%d  !== 'undefined' ){\
  5313.  ctx.globalAlpha = 1.0;\
  5314.  var y_offset = 2*font_size;\
  5315.  var txt;var txt_size;\
  5316.  var x_offset = xsize - 2*font_size;\
  5317.  var l_length = legend%d.length;var barcolor = new Array();\
  5318.  if( typeof legendcolors%d !== 'undefined' ){\
  5319.   for(var p = 0 ; p < l_length ; p++){\
  5320.    barcolor[p] = legendcolors%d[p];\
  5321.   };\
  5322.  }else{\
  5323.   if( barcolor.length == 0 ){\
  5324.    for(var p = 0 ; p < l_length ; p++){\
  5325.     barcolor[p] = stroke_color;\
  5326.    };\
  5327.   };\
  5328.  };\
  5329.  for(var p = 0; p < l_length; p++){\
  5330.   ctx.fillStyle = barcolor[p];\
  5331.   txt = legend%d[p];\
  5332.   txt_size = ctx.measureText(txt).width;\
  5333.   ctx.fillText(legend%d[p],x_offset - txt_size, y_offset);\
  5334.   y_offset = parseInt(y_offset + 1.5*font_size);\
  5335.  };\
  5336. };\
  5337. if( typeof xaxislabel !== 'undefined' ){\
  5338.   ctx.fillStyle = \'#000000\';\
  5339.   var txt_size = ctx.measureText(xaxislabel).width + 4 ;\
  5340.   ctx.fillText(xaxislabel,xsize - txt_size, zero_y - 7);\
  5341. };\
  5342. if( typeof yaxislabel !== 'undefined'){\
  5343.   ctx.save();\
  5344.   ctx.fillStyle = \'#000000\';\
  5345.   var txt_size = ctx.measureText(yaxislabel).width;\
  5346.   ctx.translate(zero_x+8 + font_size,txt_size+font_size);\
  5347.   ctx.rotate(-0.5*Math.PI);\
  5348.   ctx.fillText(yaxislabel,0,0);\
  5349.   ctx.restore();\
  5350. };\
  5351. };\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);
  5352.     break;
  5353.  
  5354.     case DRAW_GRID:/* not used for userdraw */
  5355. fprintf(js_include_file,"\n<!-- draw grid -->\n\
  5356. 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){\
  5357. 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);};\
  5358. var ctx = obj.getContext(\"2d\");ctx.clearRect(0,0,xsize,ysize);\
  5359. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5360. ctx.save();\
  5361. if( use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);};\
  5362. if( use_rotate == 1 ){ctx.translate(x2px(0),y2px(0));ctx.rotate(angle*Math.PI/180);ctx.translate(-1*(x2px(0)),-1*(y2px(0)));};\
  5363. var stroke_color = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5364. ctx.fillStyle = \"rgba(\"+font_color+\",\"+1.0+\")\";\
  5365. var axis_color = \"rgba(\"+axis_color+\",\"+stroke_opacity+\")\";\
  5366. ctx.font = font_family;\
  5367. var barcolor = new Array();\
  5368. var xstep = xsize*xmajor/(xmax - xmin);\
  5369. var ystep = ysize*ymajor/(ymax - ymin);\
  5370. var x2step = xstep / xminor;\
  5371. var y2step = ystep / yminor;\
  5372. var zero_x = x2px(0);;var zero_y = y2px(0);var f_x;var f_y;\
  5373. if(xmin < 0 ){ f_x = -1;}else{ f_x = 1;}\
  5374. if(ymin < 0 ){ f_y = -1;}else{ f_y = 1;}\
  5375. ctx.beginPath();\
  5376. ctx.lineWidth = line_width;\
  5377. ctx.strokeStyle = stroke_color;\
  5378. for(var p = zero_x ; p < xsize; p = p + xstep){\
  5379. ctx.moveTo(p,0);\
  5380. ctx.lineTo(p,ysize);\
  5381. };\
  5382. for(var p = zero_x ; p > 0; p = p - xstep){\
  5383. ctx.moveTo(p,0);\
  5384. ctx.lineTo(p,ysize);\
  5385. };\
  5386. for(var p = zero_y ; p < ysize; p = p + ystep){\
  5387. ctx.moveTo(0,p);\
  5388. ctx.lineTo(xsize,p);\
  5389. };\
  5390. for(var p = zero_y ; p > 0; p = p - ystep){\
  5391. ctx.moveTo(0,p);\
  5392. ctx.lineTo(xsize,p);\
  5393. };\
  5394. if( typeof xaxislabel !== 'undefined' ){\
  5395. ctx.save();\
  5396. ctx.font = \"italic \"+font_size+\"px Ariel\";\
  5397. var corr =  ctx.measureText(xaxislabel).width;\
  5398. ctx.fillText(xaxislabel,xsize - 1.5*corr,zero_y - tics_length - 0.4*font_size);\
  5399. ctx.restore();\
  5400. };\
  5401. if( typeof yaxislabel !== 'undefined' ){\
  5402. ctx.save();\
  5403. ctx.font = \"italic \"+font_size+\"px Ariel\";\
  5404. var corr =  ctx.measureText(yaxislabel).width;\
  5405. ctx.translate(zero_x+tics_length + font_size,corr+font_size);\
  5406. ctx.rotate(-0.5*Math.PI);\
  5407. ctx.fillText(yaxislabel,0,0);\
  5408. ctx.restore();\
  5409. };\
  5410. ctx.stroke();\
  5411. ctx.closePath();\
  5412. if( use_axis == 1 ){\
  5413. ctx.save();\
  5414. ctx.beginPath();\
  5415. ctx.strokeStyle = stroke_color;\
  5416. ctx.lineWidth = 0.6*line_width;\
  5417. for(var p = zero_x ; p < xsize; p = p + x2step){\
  5418.  ctx.moveTo(p,0);\
  5419.  ctx.lineTo(p,ysize);\
  5420. };\
  5421. for(var p = zero_x ; p > 0; p = p - x2step){\
  5422.  ctx.moveTo(p,0);\
  5423.  ctx.lineTo(p,ysize);\
  5424. };\
  5425. for(var p = zero_y ; p < ysize; p = p + y2step){\
  5426.  ctx.moveTo(0,p);\
  5427.  ctx.lineTo(xsize,p);\
  5428. };\
  5429. for(var p = zero_y ; p > 0; p = p - y2step){\
  5430.  ctx.moveTo(0,p);\
  5431.  ctx.lineTo(xsize,p);\
  5432. };\
  5433. ctx.stroke();\
  5434. ctx.closePath();\
  5435. ctx.beginPath();\
  5436. ctx.lineWidth = 2*line_width;\
  5437. ctx.strokeStyle = axis_color;\
  5438. ctx.moveTo(0,zero_y);\
  5439. ctx.lineTo(xsize,zero_y);\
  5440. ctx.moveTo(zero_x,0);\
  5441. ctx.lineTo(zero_x,ysize);\
  5442. ctx.stroke();\
  5443. ctx.closePath();\
  5444. ctx.lineWidth = line_width+0.5;\
  5445. ctx.beginPath();\
  5446. for(var p = zero_x ; p < xsize; p = p + xstep){\
  5447.  ctx.moveTo(p,zero_y-tics_length);\
  5448.  ctx.lineTo(p,zero_y+tics_length);\
  5449. };\
  5450. for(var p = zero_x ; p > 0; p = p - xstep){\
  5451.  ctx.moveTo(p,zero_y-tics_length);\
  5452.  ctx.lineTo(p,zero_y+tics_length);\
  5453. };\
  5454. for(var p = zero_y ; p < ysize; p = p + ystep){\
  5455.  ctx.moveTo(zero_x-tics_length,p);\
  5456.  ctx.lineTo(zero_x+tics_length,p);\
  5457. };\
  5458. for(var p = zero_y ; p > 0; p = p - ystep){\
  5459.  ctx.moveTo(zero_x-tics_length,p);\
  5460.  ctx.lineTo(zero_x+tics_length,p);\
  5461. };\
  5462. for(var p = zero_x ; p < xsize; p = p + x2step){\
  5463.  ctx.moveTo(p,zero_y-0.5*tics_length);\
  5464.  ctx.lineTo(p,zero_y+0.5*tics_length);\
  5465. };\
  5466. for(var p = zero_x ; p > 0; p = p - x2step){\
  5467.  ctx.moveTo(p,zero_y-0.5*tics_length);\
  5468.  ctx.lineTo(p,zero_y+0.5*tics_length);\
  5469. };\
  5470. for(var p = zero_y ; p < ysize; p = p + y2step){\
  5471.  ctx.moveTo(zero_x-0.5*tics_length,p);\
  5472.  ctx.lineTo(zero_x+0.5*tics_length,p);\
  5473. };\
  5474. for(var p = zero_y ; p > 0; p = p - y2step){\
  5475.  ctx.moveTo(zero_x-0.5*tics_length,p);\
  5476.  ctx.lineTo(zero_x+0.5*tics_length,p);\
  5477. };\
  5478. ctx.stroke();\
  5479. ctx.closePath();\
  5480. ctx.restore();\
  5481. };\
  5482. if( use_axis_numbering == 1 ){\
  5483. ctx.save();\
  5484. ctx.fillColor = axis_color;\
  5485. ctx.font = font_family;\
  5486. var shift = zero_y+2*font_size;var flip=0;var skip=0;var corr;var cnt;var disp_cnt;var prec;\
  5487. if( x_strings != null ){\
  5488.  var len = x_strings.length;if((len/2+0.5)%%2 == 0){ alert(\"xaxis number unpaired:  text missing ! \");return;};\
  5489.  for(var p = 0 ; p < len ; p = p+2){\
  5490.   var x_nums = x2px(eval(x_strings[p]));\
  5491.   var x_text = x_strings[p+1];\
  5492.   corr = ctx.measureText(x_text).width;\
  5493.   skip = 1.2*corr/xstep;\
  5494.   if( zero_y+2*font_size > ysize ){shift = ysize - 2*font_size;};\
  5495.   if( skip > 1 ){if(flip == 0 ){flip = 1; shift = shift + font_size;}else{flip = 0; shift = shift - font_size;}};\
  5496.   ctx.fillText(x_text,parseInt(x_nums-0.5*corr),shift);\
  5497.  };\
  5498. }\
  5499. else\
  5500. {\
  5501.  skip = 1;cnt = px2x(zero_x);\
  5502.  prec = Math.log(precision)/(Math.log(10));\
  5503.  var y_basis;if(f_y == 1){ y_basis = ysize }else{ y_basis = zero_y + 1.4*font_size;};\
  5504.  for( var p = zero_x ; p < xsize ; p = p+xstep){\
  5505.   if(skip == 0 ){\
  5506.    disp_cnt = cnt.toFixed(prec);\
  5507.    corr = ctx.measureText(disp_cnt).width;\
  5508.    skip = parseInt(1.2*corr/xstep);\
  5509.    ctx.fillText(disp_cnt,p-0.5*corr,y_basis);\
  5510.   }\
  5511.   else\
  5512.   {\
  5513.    skip--;\
  5514.   };\
  5515.   cnt = cnt + xmajor;\
  5516.  };\
  5517.  cnt = px2x(zero_x);skip = 1;\
  5518.  for( var p = zero_x ; p > 0 ; p = p-xstep){\
  5519.   if(skip == 0 ){\
  5520.    disp_cnt = cnt.toFixed(prec);\
  5521.    corr = ctx.measureText(disp_cnt).width;\
  5522.    skip = parseInt(1.2*corr/xstep);\
  5523.    ctx.fillText(disp_cnt,p-0.5*corr,y_basis);\
  5524.   }\
  5525.   else\
  5526.   {\
  5527.    skip--;\
  5528.   };\
  5529.   cnt = cnt - xmajor;\
  5530.  };\
  5531. };\
  5532. if( y_strings != null ){\
  5533.  var len = y_strings.length;if((len/2+0.5)%%2 == 0){ alert(\"yaxis number unpaired:  text missing ! \");return;};\
  5534.  for(var p = 0 ; p < len ; p = p+2){\
  5535.   var y_nums = y2px(eval(y_strings[p]));\
  5536.   var y_text = y_strings[p+1];\
  5537.   corr = 2 + tics_length + ctx.measureText(y_text).width;\
  5538.   if( corr > zero_x){corr = parseInt(zero_x+2); }\
  5539.   ctx.fillText(y_text,zero_x - corr,y_nums);\
  5540.  };\
  5541. }\
  5542. else\
  5543. {\
  5544.  if(f_x == 1){ corr = 1.5*tics_length; }\
  5545.  cnt = px2y(zero_y);skip = 1;\
  5546.  for( var p = zero_y ; p < ysize ; p = p+ystep){\
  5547.   if(skip == 0 ){\
  5548.    skip = parseInt(1.4*font_size/ystep);\
  5549.    disp_cnt = cnt.toFixed(prec);\
  5550.    if(f_x == -1 ){ corr = parseInt(zero_x - (2 + tics_length + ctx.measureText(disp_cnt).width));};\
  5551.    ctx.fillText(disp_cnt,parseInt(corr),parseInt(p+(0.4*font_size)));\
  5552.   }\
  5553.   else\
  5554.   {\
  5555.    skip--;\
  5556.   };\
  5557.   cnt = cnt - ymajor;\
  5558.  };\
  5559.  corr = 0;cnt = px2y(zero_y);skip = 1;\
  5560.  if(f_x == 1){ corr = 1.5*tics_length; }\
  5561.  for( var p = zero_y ; p > 0 ; p = p-ystep){\
  5562.   if(skip == 0 ){\
  5563.    skip = parseInt(1.4*font_size/ystep);\
  5564.    disp_cnt = cnt.toFixed(prec);\
  5565.    if(f_x == -1 ){corr = parseInt(zero_x - (2 + tics_length + ctx.measureText(disp_cnt).width));};\
  5566.    ctx.fillText(disp_cnt,parseInt(corr),parseInt(p+(0.4*font_size)));\
  5567.   }\
  5568.   else\
  5569.   {\
  5570.    skip--;\
  5571.   };\
  5572.   cnt = cnt + ymajor;\
  5573.  };\
  5574. };\
  5575. ctx.stroke();\
  5576. ctx.restore();\
  5577. };\
  5578. if( typeof legend0  !== 'undefined' ){\
  5579. ctx.save();\
  5580. ctx.globalAlpha = 1.0;\
  5581. ctx.font = \"bold \"+font_size+\"px Ariel\";\
  5582. var y_offset = 2*font_size;\
  5583. var txt;var txt_size;\
  5584. var x_offset = xsize - 2*font_size;\
  5585. var l_length = legend0.length;\
  5586. if( typeof legendcolors0 !== 'undefined' ){\
  5587.  for(var p = 0 ; p < l_length ; p++){\
  5588.    barcolor[p] = legendcolors0[p];\
  5589.  };\
  5590. }\
  5591. else\
  5592. {\
  5593.  if( barcolor.length == 0 ){\
  5594.   for(var p = 0 ; p < l_length ; p++){\
  5595.    barcolor[p] = stroke_color;\
  5596.   };\
  5597.  };\
  5598. };\
  5599. for(var p = 0; p < l_length; p++){\
  5600.  ctx.fillStyle = barcolor[p];\
  5601.  txt = legend0[p];\
  5602.  txt_size = ctx.measureText(txt).width;\
  5603.  ctx.fillText(legend0[p],x_offset - txt_size, y_offset);\
  5604.  y_offset = parseInt(y_offset + 1.5*font_size);\
  5605. };\
  5606. ctx.restore();\
  5607. };\
  5608. if( typeof barchart_0  !== 'undefined' ){\
  5609. ctx.save();\
  5610. var num_barcharts = 0;\
  5611. var bar_name = eval('barchart_0');\
  5612. while( typeof bar_name !== 'undefined' ){\
  5613.    try{ bar_name = eval('barchart_'+num_barcharts);num_barcharts++;}catch(e){break;};\
  5614. };\
  5615. var bar_width = parseInt(0.8*xstep/(num_barcharts));\
  5616. for(var i=0 ; i< num_barcharts ; i++){\
  5617.  bar_name = eval('barchart_'+i);\
  5618.  var bar_x = new Array();\
  5619.  var bar_y = new Array();\
  5620.  var lb = bar_name.length;\
  5621.  var idx = 0;\
  5622.  var dx = parseInt(0.5*i*bar_width);\
  5623.  for( var p = 0 ; p < lb ; p = p + 3 ){\
  5624.   bar_x[idx] = x2px(bar_name[p]);\
  5625.   bar_y[idx] = y2px(bar_name[p+1]);\
  5626.   barcolor[idx] = bar_name[p+2];\
  5627.   idx++;\
  5628.  };\
  5629.  ctx.globalAlpha = fill_opacity;\
  5630.  ctx.beginPath();\
  5631.  for( var p = 0; p < idx ; p++ ){\
  5632.   ctx.strokeStyle = barcolor[p];\
  5633.   ctx.fillStyle = barcolor[p];\
  5634.   ctx.rect(bar_x[p]-0.4*xstep+dx,bar_y[p],bar_width,zero_y - bar_y[p]);\
  5635.  };\
  5636.  ctx.fill();\
  5637.  ctx.stroke();\
  5638.  ctx.closePath();\
  5639. };\
  5640. ctx.restore();\
  5641. };\
  5642. if( typeof linegraph_0 !== 'undefined' ){\
  5643. ctx.save();\
  5644. ctx.globalAlpha = 1.0;\
  5645. var i = 0;\
  5646. var line_name = eval('linegraph_'+i);\
  5647. while ( typeof line_name !== 'undefined' ){\
  5648.  ctx.strokeStyle = 'rgba('+line_name[0]+','+stroke_opacity+')';\
  5649.  ctx.lineWidth = parseInt(line_name[1]);\
  5650.  if(line_name[2] == \"1\"){\
  5651.   var d1 = parseInt(line_name[3]);\
  5652.   var d2 = parseInt(line_name[4]);\
  5653.   if(ctx.setLineDash){ ctx.setLineDash([d1,d2]); } else { ctx.mozDash = [d1,d2];};\
  5654.  }\
  5655.  else\
  5656.  {\
  5657.  if(ctx.setLineDash){ctx.setLineDash = null;}\
  5658.  if(ctx.mozDash){ctx.mozDash = null;}\
  5659.  };\
  5660.  var data_x = new Array();\
  5661.  var data_y = new Array();\
  5662.  var lb = line_name.length;\
  5663.  var idx = 0;\
  5664.  for( var p = 5 ; p < lb ; p = p + 2 ){\
  5665.   data_x[idx] = x2px(line_name[p]);\
  5666.   data_y[idx] = y2px(line_name[p+1]);\
  5667.   idx++;\
  5668.  };\
  5669.  for( var p = 0; p < idx ; p++){\
  5670.   ctx.beginPath();\
  5671.   ctx.moveTo(data_x[p],data_y[p]);\
  5672.   ctx.lineTo(data_x[p+1],data_y[p+1]);\
  5673.   ctx.stroke();\
  5674.   ctx.closePath();\
  5675.  };\
  5676.  i++;\
  5677.  try{ line_name = eval('linegraph_'+i); }catch(e){ break; }\
  5678. };\
  5679. ctx.restore();\
  5680. };\
  5681. return;\
  5682. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  5683.     break;
  5684.    
  5685.     case DRAW_PIECHART:
  5686. fprintf(js_include_file,"\n<!-- draw piecharts -->\n\
  5687. function draw_piechart(canvas_type,x_center,y_center,radius, data_color_list,fill_opacity,legend_cnt,font_family){\
  5688. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5689.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5690. }\
  5691. else\
  5692. {\
  5693.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5694. };\
  5695. var ld = data_color_list.length;\
  5696. var sum = 0;\
  5697. var idx = 0;\
  5698. var font_size = parseInt(font_family.replace(/[^0-9\\.]+/g, \"\"));\
  5699. var colors = new Array();\
  5700. var data = new Array();\
  5701. for(var p = 0;p < ld; p = p + 2){\
  5702.  data[idx] = parseFloat(data_color_list[p]);\
  5703.  sum = sum + data[idx];\
  5704.  colors[idx] = data_color_list[p+1];\
  5705.  idx++;\
  5706. };\
  5707. var ctx = obj.getContext(\"2d\");\
  5708. ctx.save();\
  5709. var angle;\
  5710. var angle_end = 0;\
  5711. var offset = Math.PI / 2;\
  5712. ctx.globalAlpha = fill_opacity;\
  5713. for(var p=0; p < idx; p++){\
  5714.  ctx.beginPath();\
  5715.  ctx.fillStyle = colors[p];\
  5716.  ctx.moveTo(x_center,y_center);\
  5717.  angle = Math.PI * (2 * data[p] / sum);\
  5718.  ctx.arc(x_center,y_center, radius, angle_end - offset, angle_end + angle - offset, false);\
  5719.  ctx.lineTo(x_center, y_center);\
  5720.  ctx.fill();\
  5721.  ctx.closePath();\
  5722.  angle_end  = angle_end + angle;\
  5723. };\
  5724. if(typeof legend0 !== 'undefined'){\
  5725.  var legenda = eval(\"legend\"+legend_cnt);\
  5726.  ctx.globalAlpha = 1.0;\
  5727.  ctx.font = font_family;\
  5728.  var y_offset = font_size; \
  5729.  var x_offset = 0;\
  5730.  var txt;var txt_size;\
  5731.  for(var p = 0; p < idx; p++){\
  5732.   ctx.fillStyle = colors[p];\
  5733.   txt = legenda[p];\
  5734.   txt_size = ctx.measureText(txt).width;\
  5735.   if( x_center + radius + txt_size > xsize ){ x_offset =  x_center + radius + txt_size - xsize;} else { x_offset = 0; };\
  5736.   ctx.fillText(txt,x_center + radius - x_offset, y_center - radius + y_offset);\
  5737.   y_offset = parseInt(y_offset + 1.5*font_size);\
  5738.  };\
  5739. };\
  5740. ctx.restore();\
  5741. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5742.    
  5743.     break;
  5744.     case DRAW_ARCS:
  5745. fprintf(js_include_file,"\n<!-- draw arcs -->\n\
  5746. 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){\
  5747. ctx.save();\
  5748. if( use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{if(ctx.mozDash){ ctx.mozDash = [dashtype0,dashtype1];};};};\
  5749. if( use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);};\
  5750. if( use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);};\
  5751. if(end < start){var tmp = end;end = start;start=tmp;};\
  5752. start = 360 - start;\
  5753. end = 360 - end;\
  5754. ctx.lineWidth = line_width;\
  5755. ctx.strokeStyle =  \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5756. ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";\
  5757. ctx.beginPath();\
  5758. ctx.moveTo(xc,yc);\
  5759. ctx.arc(xc, yc, r, start*(Math.PI / 180), end*(Math.PI / 180),true);\
  5760. ctx.lineTo(xc,yc);\
  5761. ctx.closePath();\
  5762. if( use_filled == 1 ){\
  5763.  ctx.fill();\
  5764. };\
  5765. ctx.stroke();\
  5766. ctx.restore();\
  5767. };");
  5768.    
  5769.     break;
  5770.     case DRAW_CENTERSTRING:
  5771. fprintf(js_include_file,"\n<!-- draw centerstring -->\n\
  5772. draw_centerstring = function(canvas_type,y,font_family,stroke_color,stroke_opacity,text){\
  5773. var obj;\
  5774. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5775.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5776. }\
  5777. else\
  5778. {\
  5779.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5780. };\
  5781. var ctx = obj.getContext(\"2d\");\
  5782. ctx.save();\
  5783. ctx.font = font_family;\
  5784. ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5785. var stringwidth = ctx.measureText(text).width;\
  5786. var x = parseInt((xsize - stringwidth)/2);if( x < 0 ){x = 0;};\
  5787. ctx.fillText(text,x,y2px(y));\
  5788. return;\
  5789. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5790.     break;
  5791.     case DRAW_TEXTS:
  5792. fprintf(js_include_file,"\n<!-- draw text -->\n\
  5793. draw_text = function(canvas_type,x,y,font_size,font_family,stroke_color,stroke_opacity,angle2,text,use_rotate,angle,use_affine,affine_matrix){\
  5794.  var obj;\
  5795.  if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5796.   obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5797.  }\
  5798.  else\
  5799.  {\
  5800.   obj = create_canvas%d(canvas_type,xsize,ysize);\
  5801.  };\
  5802.  var ctx = obj.getContext(\"2d\");\
  5803.  if(angle2 == 0 && angle != 0){\
  5804.   ctx.save();\
  5805.   if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5806.   if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5807.  };\
  5808.  if( font_family.indexOf('px') != null ){\
  5809.   ctx.font = font_family;\
  5810.  }\
  5811.  else\
  5812.  {\
  5813.   ctx.font = font_family;\
  5814.  };\
  5815.  ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5816.  if(angle2 != 0){\
  5817.   ctx.save();\
  5818.   ctx.translate(x,y);\
  5819.   ctx.rotate((360-angle2)*(Math.PI / 180));\
  5820.   ctx.fillText(text,0,0);\
  5821.   ctx.restore();\
  5822.  }else{ctx.fillText(text,x,y);};\
  5823. ctx.restore();\
  5824. return;\
  5825. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5826.     break;
  5827.     case DRAW_CURVE:
  5828. fprintf(js_include_file,"\n<!-- draw curve -->\n\
  5829. 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){\
  5830. var obj;\
  5831. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5832.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5833. }\
  5834. else\
  5835. {\
  5836.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5837. };\
  5838. var ctx = obj.getContext(\"2d\");\
  5839. ctx.save();\
  5840. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5841. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5842. ctx.beginPath();ctx.lineWidth = line_width;\
  5843. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5844. ctx.strokeStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5845. ctx.moveTo(x2px(x_points[0]),y2px(y_points[0]));\
  5846. for(var p = 1 ; p < x_points.length ; p++){\
  5847.  if( y2px(y_points[p]) > -5 && y2px(y_points[p]) < ysize+5 ){\
  5848.  ctx.lineTo(x2px(x_points[p]),y2px(y_points[p]));\
  5849.  }\
  5850.  else\
  5851.  {\
  5852.   ctx.stroke();\
  5853.   ctx.beginPath();\
  5854.   p++;\
  5855.   ctx.moveTo(x2px(x_points[p]),y2px(y_points[p]));\
  5856.  };\
  5857. };\
  5858. ctx.stroke();\
  5859. ctx.restore();\
  5860. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5861.     break;
  5862.    
  5863.     case DRAW_INPUTS:
  5864. fprintf(js_include_file,"\n<!-- draw input fields -->\n\
  5865. draw_inputs = function(root_id,input_cnt,x,y,size,readonly,style,value){\
  5866. var canvas_div = document.getElementById(\"canvas_div\"+root_id);\
  5867. var input = document.createElement(\"input\");\
  5868. input.setAttribute(\"id\",\"canvas_input\"+input_cnt);\
  5869. input.setAttribute(\"style\",\"position:absolute;left:\"+x+\"px;top:\"+y+\"px;\"+style);\
  5870. input.setAttribute(\"size\",size);\
  5871. input.setAttribute(\"value\",value);\
  5872. if( readonly == 0 || wims_status == \"done\" ){ input.setAttribute(\"readonly\",\"readonly\");if( wims_status == \"done\" ){input.setAttribute(\"value\",\"\");};};\
  5873. canvas_div.appendChild(input);};");
  5874.     break;
  5875.    
  5876.     case DRAW_TEXTAREAS:
  5877. fprintf(js_include_file,"\n<!-- draw text area inputfields -->\n\
  5878. draw_textareas = function(root_id,input_cnt,x,y,cols,rows,readonly,style,value){\
  5879. var canvas_div = document.getElementById(\"canvas_div\"+root_id);\
  5880. var textarea = document.createElement(\"textarea\");\
  5881. textarea.setAttribute(\"id\",\"canvas_input\"+input_cnt);\
  5882. textarea.setAttribute(\"style\",\"position:absolute;left:\"+x+\"px;top:\"+y+\"px;\"+style);\
  5883. textarea.setAttribute(\"cols\",cols);\
  5884. textarea.setAttribute(\"rows\",rows);\
  5885. textarea.value = value;\
  5886. if( readonly == 0 || wims_status == \"done\" ){ textarea.setAttribute(\"readonly\",\"readonly\");if( wims_status == \"done\" ){textarea.value=\"\";};};\
  5887. canvas_div.appendChild(textarea);};");
  5888.     break;
  5889.    
  5890. case DRAW_PIXELS:
  5891. fprintf(js_include_file,"\n<!-- draw pixel -->\n\
  5892. draw_setpixel = function(x,y,color,opacity,pixelsize){\
  5893. var canvas = create_canvas%d(10,xsize,ysize);\
  5894. var d = 0.5*pixelsize;\
  5895. var ctx = canvas.getContext(\"2d\");\
  5896. ctx.fillStyle = \"rgba(\"+color+\",\"+opacity+\")\";\
  5897. ctx.clearRect(0,0,xsize,ysize);\
  5898. for(var p=0; p<x.length;p++){\
  5899.  ctx.fillRect( x2px(x[p]) - d, y2px(y[p]) - d , pixelsize, pixelsize );\
  5900. };\
  5901. ctx.fill();ctx.stroke();\
  5902. };",canvas_root_id);
  5903. break;
  5904.  
  5905. case DRAW_CLOCK:
  5906. fprintf(js_include_file,"\n<!-- begin command clock -->\n\
  5907. var clock_canvas = create_canvas%d(%d,xsize,ysize);\
  5908. var clock_ctx = clock_canvas.getContext(\"2d\");\
  5909. var clock = function(xc,yc,radius,H,M,S,type,interaction,h_color,m_color,s_color,bg_color,fg_color){\
  5910. clock_ctx.save();\
  5911. clock_ctx.clearRect(xc-radius,yc-radius,xc+radius,yc+radius);\
  5912. clock_ctx.globalAlpha = clock_bg_opacity;\
  5913. this.type = type || 0;\
  5914. this.interaction = interaction || 0;\
  5915. this.H = H;\
  5916. this.M = M;\
  5917. this.S = S;\
  5918. if(this.S == -1){this.S = 59;this.M = this.M - 1;};\
  5919. if(this.M == -1){this.M = 59;this.H = this.H - 1;};\
  5920. if(this.H == -1){this.H = 11;};\
  5921. this.xc = xc || xsize/2;\
  5922. this.yc = yc || ysize/2;\
  5923. this.radius = radius || xsize/4;\
  5924. var font_size = parseInt(0.2*this.radius);\
  5925. this.H_color = h_color || \"blue\";\
  5926. this.M_color = m_color || \"blue\";\
  5927. this.S_color = s_color || \"blue\";\
  5928. this.fg_color = fg_color || \"red\";\
  5929. this.bg_color = bg_color || \"white\";\
  5930. clock_ctx.translate(this.xc,this.yc);\
  5931. clock_ctx.beginPath();\
  5932. clock_ctx.arc(0,0,this.radius,0,2*Math.PI,false);\
  5933. clock_ctx.fillStyle = this.bg_color;\
  5934. clock_ctx.fill();\
  5935. clock_ctx.closePath();\
  5936. clock_ctx.beginPath();\
  5937. clock_ctx.font = font_size+\"px Arial\";\
  5938. clock_ctx.fillStyle = this.fg_color;\
  5939. clock_ctx.textAlign = \"center\";\
  5940. clock_ctx.textBaseline = 'middle';\
  5941. var angle;var x1,y1,x2,y2;\
  5942. var angle_cos;var angle_sin;\
  5943. clock_ctx.globalAlpha = clock_fg_opacity;\
  5944. switch(type){\
  5945. case 0:clock_ctx.beginPath();\
  5946. for(var p = 1; p <= 12 ; p++){\
  5947.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 12));\
  5948.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 12));\
  5949.  x1 = 0.8*angle_cos;y1 = 0.8*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  5950.  clock_ctx.moveTo(x1,y1);\
  5951.  clock_ctx.lineTo(x2,y2);\
  5952. };\
  5953. for(var p = 1; p <= 60 ; p++){\
  5954.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 60));\
  5955.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 60));\
  5956.  x1 = 0.9*angle_cos;y1 = 0.9*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  5957.  clock_ctx.moveTo(x1,y1);\
  5958.  clock_ctx.lineTo(x2,y2);\
  5959. };\
  5960. clock_ctx.closePath();\
  5961. clock_ctx.stroke();\
  5962. break;\
  5963. case 1:\
  5964. 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;\
  5965. case 2:\
  5966. 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);};\
  5967. clock_ctx.beginPath();\
  5968. for(var p = 1; p <= 12 ; p++){\
  5969.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 12));\
  5970.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 12));\
  5971.  x1 = 0.9*angle_cos;y1 = 0.9*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  5972.  clock_ctx.moveTo(x1,y1);\
  5973.  clock_ctx.lineTo(x2,y2);\
  5974. };\
  5975. for(var p = 1; p <= 60 ; p++){\
  5976.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 60));\
  5977.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 60));\
  5978.  x1 = 0.95*angle_cos;y1 = 0.95*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  5979.  clock_ctx.moveTo(x1,y1);\
  5980.  clock_ctx.lineTo(x2,y2);\
  5981. };\
  5982. clock_ctx.closePath();\
  5983. clock_ctx.stroke();\
  5984. break;\
  5985. };\
  5986. angle = (this.H - 3 + this.M/60 ) * 2 * Math.PI / 12;\
  5987. clock_ctx.rotate(angle);\
  5988. clock_ctx.beginPath();\
  5989. clock_ctx.moveTo(-3, -2);\
  5990. clock_ctx.lineTo(-3, 2);\
  5991. clock_ctx.lineTo(this.radius * 0.7, 1);\
  5992. clock_ctx.lineTo(this.radius  * 0.7, -1);\
  5993. clock_ctx.fillStyle = this.H_color;\
  5994. clock_ctx.fill();\
  5995. clock_ctx.rotate(-angle);\
  5996. angle = (this.M - 15 + this.S/60) * 2 * Math.PI / 60;\
  5997. clock_ctx.rotate(angle);\
  5998. clock_ctx.beginPath();\
  5999. clock_ctx.moveTo(-3, -2);\
  6000. clock_ctx.lineTo(-3, 2);\
  6001. clock_ctx.lineTo(this.radius  * 0.8, 1);\
  6002. clock_ctx.lineTo(this.radius  * 0.8, -1);\
  6003. clock_ctx.fillStyle = this.M_color;\
  6004. clock_ctx.fill();\
  6005. clock_ctx.rotate(-angle);\
  6006. angle = (this.S - 15) * 2 * Math.PI / 60;\
  6007. clock_ctx.rotate(angle);\
  6008. clock_ctx.beginPath();\
  6009. clock_ctx.moveTo(0,0);\
  6010. clock_ctx.lineTo(this.radius  * 0.95, 0);\
  6011. clock_ctx.lineTo(this.radius  * 0.9, -1);\
  6012. clock_ctx.strokeStyle = this.S_color;\
  6013. clock_ctx.stroke();\
  6014. clock_ctx.restore();\
  6015. };",canvas_root_id,CLOCK_CANVAS);
  6016. break;
  6017.  
  6018. case DRAW_LATTICE:
  6019. fprintf(js_include_file,"\n<!-- draw lattice -->\n\
  6020. 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){\
  6021. var obj;\
  6022. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6023.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6024. }\
  6025. else\
  6026. {\
  6027.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6028. };\
  6029. var ctx = obj.getContext(\"2d\");\
  6030. ctx.save();\
  6031. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  6032. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  6033. ctx.fillStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6034. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6035. var radius = line_width;\
  6036. var x = 0;\
  6037. var y = 0;\
  6038. var x_step_px = xsize/(xmax-xmin);\
  6039. var y_step_px = ysize/(ymax-ymin);\
  6040. var xv1 = dx1*x_step_px;\
  6041. var yv1 = dy1*y_step_px;\
  6042. var xv2 = dx2*x_step_px;\
  6043. var yv2 = dy2*y_step_px;\
  6044. for(var p = 0; p < n1 ;p++){\
  6045.  x = p*xv1 + x0;\
  6046.  y = p*yv1 + y0;\
  6047.  for(var c = 0; c < n2 ; c++){\
  6048.   ctx.beginPath();\
  6049.   ctx.arc(x+c*xv2,y+c*yv2,radius,0,2*Math.PI,false);\
  6050.   ctx.fill();\
  6051.   ctx.stroke();\
  6052.   ctx.closePath();\
  6053.  };\
  6054. };\
  6055. ctx.restore();\
  6056. return;\
  6057. };",canvas_root_id,canvas_root_id,canvas_root_id);
  6058.     break;
  6059. case DRAW_XYLOGSCALE:
  6060. fprintf(js_include_file,"\n<!-- draw xylogscale -->\n\
  6061. 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){\
  6062. var obj;\
  6063. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6064.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6065. }\
  6066. else\
  6067. {\
  6068.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6069. };\
  6070. var ctx = obj.getContext(\"2d\");\
  6071. ctx.clearRect(0,0,xsize,ysize);\
  6072. ctx.save();\
  6073. var xmarge;var ymarge;var x_e;var y_e;var num;var corr;var xtxt;var ytxt;\
  6074. var x_min = Math.log(xmin)/Math.log(xlogbase);\
  6075. var x_max = Math.log(xmax)/Math.log(xlogbase);\
  6076. var y_min = Math.log(ymin)/Math.log(ylogbase);\
  6077. var y_max = Math.log(ymax)/Math.log(ylogbase);\
  6078. if(use_axis_numbering == 1){\
  6079.  ctx.font = font_family;\
  6080.  xmarge = ctx.measureText(ylogbase+'^'+y_max.toFixed(0)+' ').width;\
  6081.  ymarge = parseInt(1.5*font_size);\
  6082.  ctx.save();\
  6083.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\
  6084.  ctx.rect(0,0,xmarge,ysize);\
  6085.  ctx.rect(0,ysize-ymarge,xsize,ysize);\
  6086.  ctx.fill();\
  6087.  ctx.restore();\
  6088. }else{xmarge = 0;ymarge = 0;};\
  6089. if( typeof xaxislabel !== 'undefined' ){\
  6090.  ctx.save();\
  6091.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6092.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6093.  corr =  ctx.measureText(xaxislabel).width;\
  6094.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\
  6095.  ctx.restore();\
  6096. };\
  6097. if( typeof yaxislabel !== 'undefined' ){\
  6098.  ctx.save();\
  6099.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6100.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6101.  corr = ctx.measureText(yaxislabel).width;\
  6102.  ctx.translate(xmarge+font_size,corr+font_size);\
  6103.  ctx.rotate(-0.5*Math.PI);\
  6104.  ctx.fillText(yaxislabel,0,0);\
  6105.  ctx.restore();\
  6106. };\
  6107. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6108. ctx.lineWidth = line_width;\
  6109. for(var p = x_min; p <= x_max ; p++){\
  6110.  num = Math.pow(xlogbase,p);\
  6111.  for(var i = 1 ; i < xlogbase ; i++){\
  6112.   x_e = x2px(i*num);\
  6113.   if( i == 1 ){\
  6114.    ctx.lineWidth = line_width;\
  6115.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6116.    if( use_axis_numbering == 1 && p > x_min){\
  6117.      xtxt = xlogbase+'^'+p.toFixed(0);\
  6118.      corr = 0.5*(ctx.measureText(xtxt).width);\
  6119.      ctx.fillText(xtxt,x_e - corr,ysize - 4);\
  6120.    };\
  6121.   }else{\
  6122.    ctx.lineWidth = 0.2*line_width;\
  6123.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6124.   };\
  6125.   if( x_e >= xmarge ){\
  6126.    ctx.beginPath();\
  6127.    ctx.moveTo(x_e,0);\
  6128.    ctx.lineTo(x_e,ysize - ymarge);\
  6129.    ctx.stroke();\
  6130.    ctx.closePath();\
  6131.   };\
  6132.  };\
  6133. };\
  6134. for(var p = y_min; p <= y_max ; p++){\
  6135.  num = Math.pow(ylogbase,p);\
  6136.  for(var i = 1 ; i < ylogbase ; i++){\
  6137.   y_e = y2px(i*num);\
  6138.   if( i == 1 ){\
  6139.    ctx.lineWidth = line_width;\
  6140.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6141.    if( use_axis_numbering == 1 && p > y_min){\
  6142.     ctx.fillText(ylogbase+'^'+p.toFixed(0),0,y_e);\
  6143.    };\
  6144.   }else{\
  6145.    ctx.lineWidth = 0.2*line_width;\
  6146.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6147.   };\
  6148.   ctx.beginPath();\
  6149.   ctx.moveTo(xmarge,y_e);\
  6150.   ctx.lineTo(xsize,y_e);\
  6151.   ctx.stroke();\
  6152.   ctx.closePath();\
  6153.  };\
  6154. };\
  6155. ctx.restore();\
  6156. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  6157.     break;
  6158.  
  6159. case DRAW_XLOGSCALE:
  6160. fprintf(js_include_file,"\n<!-- draw xlogscale -->\n\
  6161. 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){\
  6162. var obj;\
  6163. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6164.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6165. }\
  6166. else\
  6167. {\
  6168.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6169. };\
  6170. var ctx = obj.getContext(\"2d\");\
  6171. ctx.clearRect(0,0,xsize,ysize);\
  6172. ctx.save();\
  6173. ctx.lineWidth = line_width;\
  6174. var prec = Math.log(precision)/Math.log(10);\
  6175. var x_min = Math.log(xmin)/Math.log(xlogbase);\
  6176. var x_max = Math.log(xmax)/Math.log(xlogbase);\
  6177. var y_min = 0;var y_max = ysize;var x_e;var corr;\
  6178. var xtxt;var ytxt;var num;var xmarge;var ymarge;\
  6179. if(use_axis_numbering == 1){\
  6180.  ctx.font = font_family;\
  6181.  xmarge = ctx.measureText(ymax.toFixed(prec)+' ').width;\
  6182.  ymarge = parseInt(1.5*font_size);\
  6183.  ctx.save();\
  6184.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\
  6185.  ctx.rect(0,0,xmarge,ysize);\
  6186.  ctx.rect(0,ysize-ymarge,xsize,ysize);\
  6187.  ctx.fill();\
  6188.  ctx.restore();\
  6189. }else{xmarge = 0;ymarge = 0;};\
  6190. if( typeof xaxislabel !== 'undefined' ){\
  6191.  ctx.save();\
  6192.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6193.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6194.  corr =  ctx.measureText(xaxislabel).width;\
  6195.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\
  6196.  ctx.restore();\
  6197. };\
  6198. if( typeof yaxislabel !== 'undefined' ){\
  6199.  ctx.save();\
  6200.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6201.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6202.  corr = ctx.measureText(yaxislabel).width;\
  6203.  ctx.translate(xmarge+font_size,corr+font_size);\
  6204.  ctx.rotate(-0.5*Math.PI);\
  6205.  ctx.fillText(yaxislabel,0,0);\
  6206.  ctx.restore();\
  6207. };\
  6208. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6209. ctx.lineWidth = line_width;\
  6210. for(var p = x_min; p <= x_max ; p++){\
  6211.  num = Math.pow(xlogbase,p);\
  6212.  for(var i = 1 ; i < xlogbase ; i++){\
  6213.   x_e = x2px(i*num);\
  6214.   if( i == 1 ){\
  6215.     ctx.lineWidth = line_width;\
  6216.     ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6217.    if( use_axis_numbering == 1 && p > x_min ){\
  6218.      xtxt = xlogbase+'^'+p.toFixed(0);\
  6219.      corr = 0.5*(ctx.measureText(xtxt).width);\
  6220.      ctx.fillText(xtxt,x_e - corr,ysize - 4);\
  6221.    };\
  6222.   }else{\
  6223.    ctx.lineWidth = 0.2*line_width;\
  6224.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6225.   };\
  6226.   if( x_e >= xmarge ){\
  6227.    ctx.beginPath();\
  6228.    ctx.moveTo(x_e,0);\
  6229.    ctx.lineTo(x_e,ysize - ymarge);\
  6230.    ctx.stroke();\
  6231.    ctx.closePath();\
  6232.   };\
  6233.  };\
  6234. };\
  6235. var stepy = Math.abs(y2px(ymajor) - y2px(0));\
  6236. var minor_step = stepy / yminor;\
  6237. for(var y = 0 ; y < ysize - stepy ; y = y + stepy){\
  6238.  ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6239.  ctx.lineWidth = line_width;\
  6240.  ctx.beginPath();\
  6241.  ctx.moveTo(xmarge,y);\
  6242.  ctx.lineTo(xsize,y);\
  6243.  ctx.stroke();\
  6244.  ctx.closePath();\
  6245.  if( use_axis_numbering == 1){\
  6246.   ytxt = (px2y(y)).toFixed(prec);\
  6247.   ctx.fillText( ytxt,0 ,y + 0.5*font_size );\
  6248.  };\
  6249.  for(var dy = 1 ; dy < yminor ; dy++){\
  6250.   ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6251.   ctx.lineWidth = 0.2*line_width;\
  6252.   ctx.beginPath();\
  6253.   ctx.moveTo(xmarge,y+dy*minor_step);\
  6254.   ctx.lineTo(xsize,y+dy*minor_step);\
  6255.   ctx.stroke();\
  6256.   ctx.closePath();\
  6257.  };\
  6258. };\
  6259. ctx.restore();\
  6260. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  6261.     break;
  6262. case DRAW_YLOGSCALE:
  6263. fprintf(js_include_file,"\n<!-- draw ylogscale -->\n\
  6264. 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){\
  6265. var obj;\
  6266. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6267.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6268. }\
  6269. else\
  6270. {\
  6271.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6272. };\
  6273. var ctx = obj.getContext(\"2d\");\
  6274. ctx.clearRect(0,0,xsize,ysize);\
  6275. ctx.save();\
  6276. ctx.lineWidth = line_width;\
  6277. var y_min = Math.log(ymin)/Math.log(ylogbase);\
  6278. var y_max = Math.log(ymax)/Math.log(ylogbase);\
  6279. var x_min = 0;var x_max = xsize;var y_s;var y_e;var num;\
  6280. if(use_axis_numbering == 1){\
  6281.  ctx.font = font_family;\
  6282.  xmarge = ctx.measureText(ylogbase+\"^\"+y_max.toFixed(0)+' ').width;\
  6283.  ymarge = 2*font_size;\
  6284.  ctx.save();\
  6285.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\
  6286.  ctx.rect(0,0,xmarge,ysize);\
  6287.  ctx.rect(0,ysize-ymarge,xsize,ysize);\
  6288.  ctx.fill();\
  6289.  ctx.restore();\
  6290. }else{xmarge = 0;ymarge = 0;};\
  6291. if( typeof xaxislabel !== 'undefined' ){\
  6292.  ctx.save();\
  6293.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6294.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6295.  corr =  ctx.measureText(xaxislabel).width;\
  6296.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\
  6297.  ctx.restore();\
  6298. };\
  6299. if( typeof yaxislabel !== 'undefined' ){\
  6300.  ctx.save();\
  6301.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6302.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6303.  corr = ctx.measureText(yaxislabel).width;\
  6304.  ctx.translate(xmarge+font_size,corr+font_size);\
  6305.  ctx.rotate(-0.5*Math.PI);\
  6306.  ctx.fillText(yaxislabel,0,0);\
  6307.  ctx.restore();\
  6308. };\
  6309. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6310. ctx.lineWidth = line_width;\
  6311. for(var p = y_min; p <= y_max ; p++){\
  6312.  num = Math.pow(ylogbase,p);\
  6313.  for(var i = 1 ; i < ylogbase ; i++){\
  6314.   y_e = y2px(i*num);\
  6315.   if( i == 1 ){\
  6316.    ctx.lineWidth = line_width;\
  6317.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6318.    if( use_axis_numbering == 1 && p > y_min){\
  6319.     ctx.fillText(ylogbase+'^'+p.toFixed(0),0,y_e);\
  6320.    };\
  6321.   }else{\
  6322.    ctx.lineWidth = 0.2*line_width;\
  6323.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6324.   };\
  6325.   ctx.beginPath();\
  6326.   ctx.moveTo(xmarge,y_e);\
  6327.   ctx.lineTo(xsize,y_e);\
  6328.   ctx.stroke();\
  6329.   ctx.closePath();\
  6330.  };\
  6331. };\
  6332. var stepx = Math.abs(x2px(xmajor) - x2px(0));\
  6333. var minor_step = stepx / xminor;\
  6334. var prec = Math.log(precision)/Math.log(10);\
  6335. var xtxt;var corr;var flip = 0;\
  6336. for(var x = stepx ; x < xsize ; x = x + stepx){\
  6337.  ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6338.  ctx.lineWidth = line_width;\
  6339.  ctx.beginPath();\
  6340.  ctx.moveTo(x,ysize-ymarge);\
  6341.  ctx.lineTo(x,0);\
  6342.  ctx.stroke();\
  6343.  ctx.closePath();\
  6344.  if( use_axis_numbering == 1){\
  6345.   xtxt = (px2x(x)).toFixed(prec);\
  6346.   corr = 0.5*(ctx.measureText(xtxt).width);\
  6347.   if(flip == 0 ){flip = 1;ctx.fillText( xtxt,x - corr ,ysize - 0.2*font_size );}else{\
  6348.   flip = 0;ctx.fillText( xtxt,x - corr ,ysize - 1.2*font_size );};\
  6349.  };\
  6350.  for(var dx = 1 ; dx < xminor ; dx++){\
  6351.   ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6352.   ctx.lineWidth = 0.2*line_width;\
  6353.   ctx.beginPath();\
  6354.   ctx.moveTo(x+dx*minor_step,ysize - ymarge);\
  6355.   ctx.lineTo(x+dx*minor_step,0);\
  6356.   ctx.stroke();\
  6357.   ctx.closePath();\
  6358.  };\
  6359. };\
  6360. ctx.restore();\
  6361. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  6362.     break;
  6363.     default:break;
  6364.    }
  6365.   }
  6366.  }
  6367.   return;
  6368. }
  6369.  
  6370. void check_string_length(int L){
  6371.  if(L<1 || L > MAX_BUFFER-1){
  6372.   canvas_error("problem with your arguments to command...");
  6373.  }
  6374.  return;
  6375. }
  6376.  
  6377.  
  6378. int get_token(FILE *infile){
  6379.         int     c,i=0;
  6380.         char    temp[MAX_INT], *input_type;
  6381.         char    *line="line",
  6382.         *audio="audio",
  6383.         *blink="blink",
  6384.         *arrowhead="arrowhead",
  6385.         *crosshairsize="crosshairsize",
  6386.         *crosshair="crosshair",
  6387.         *crosshairs="crosshairs",
  6388.         *audioobject="audioobject",
  6389.         *style="style",
  6390.         *mouse="mouse",
  6391.         *mousex="mousex",
  6392.         *mousey="mousey",
  6393.         *mouse_display="display",
  6394.         *mouse_degree="mouse_degree",
  6395.         *userdraw="userdraw",
  6396.         *highlight="highlight",
  6397.         *http="http",
  6398.         *rays="rays",
  6399.         *dashtype="dashtype",
  6400.         *dashed="dashed",
  6401.         *filled="filled",
  6402.         *lattice="lattice",
  6403.         *parallel="parallel",
  6404.         *segment="segment",
  6405.         *dsegment="dsegment",
  6406.         *seg="seg",
  6407.         *bgimage="bgimage",
  6408.         *bgcolor="bgcolor",
  6409.         *strokecolor="strokecolor",
  6410.         *backgroundimage="backgroundimage",
  6411.         *text="text",
  6412.         *textup="textup",
  6413.         *mouseprecision="mouseprecision",
  6414.         *precision="precision",
  6415.         *plotsteps="plotsteps",
  6416.         *plotstep="plotstep",
  6417.         *tsteps="tsteps",
  6418.         *curve="curve",
  6419.         *dcurve="dcurve",
  6420.         *plot="plot",
  6421.         *dplot="dplot",
  6422.         *levelcurve="levelcurve",
  6423.         *fontsize="fontsize",
  6424.         *fontcolor="fontcolor",
  6425.         *axis="axis",
  6426.         *axisnumbering="axisnumbering",
  6427.         *axisnumbers="axisnumbers",
  6428.         *arrow="arrow",
  6429.         *darrow="darrow",
  6430.         *arrow2="arrow2",
  6431.         *darrow2="darrow2",
  6432.         *zoom="zoom",
  6433.         *grid="grid",
  6434.         *hline="hline",
  6435.         *dhline="dhline",
  6436.         *drag="drag",
  6437.         *horizontalline="horizontalline",
  6438.         *vline="vline",
  6439.         *dvline="dvline",
  6440.         *verticalline="verticalline",
  6441.         *triangle="triangle",
  6442.         *ftriangle="ftriangle",
  6443.         *mathml="mathml",
  6444.         *html="html",
  6445.         *input="input",
  6446.         *button="button",
  6447.         *inputstyle="inputstyle",
  6448.         *textarea="textarea",
  6449.         *trange="trange",
  6450.         *ranget="ranget",
  6451.         *xrange="xrange",
  6452.         *yrange="yrange",
  6453.         *rangex="rangex",
  6454.         *rangey="rangey",
  6455.         *polyline="polyline",
  6456.         *lines="lines",
  6457.         *poly="poly",
  6458.         *polygon="polygon",
  6459.         *fpolygon="fpolygon",
  6460.         *fpoly="fpoly",
  6461.         *filledpoly="filledpoly",
  6462.         *filledpolygon="filledpolygon",
  6463.         *rect="rect",
  6464.         *frect="frect",
  6465.         *rectangle="rectangle",
  6466.         *frectangle="frectangle",
  6467.         *square="square",
  6468.         *fsquare="fsquare",
  6469.         *dline="dline",
  6470.         *arc="arc",
  6471.         *filledarc="filledarc",
  6472.         *size="size",
  6473.         *string="string",
  6474.         *stringup="stringup",
  6475.         *copy="copy",
  6476.         *copyresized="copyresized",
  6477.         *opacity="opacity",
  6478.         *transparent="transparent",
  6479.         *fill="fill",
  6480.         *point="point",
  6481.         *points="points",
  6482.         *linewidth="linewidth",
  6483.         *circle="circle",
  6484.         *fcircle="fcircle",
  6485.         *disk="disk",
  6486.         *comment="#",
  6487.         *end="end",
  6488.         *ellipse="ellipse",
  6489.         *fellipse="fellipse",
  6490.         *rotate="rotate",
  6491.         *affine="affine",
  6492.         *killaffine="killaffine",
  6493.         *fontfamily="fontfamily",
  6494.         *fillcolor="fillcolor",
  6495.         *clicktile="clicktile",
  6496.         *clicktile_colors="clicktile_colors",
  6497.         *translation="translation",
  6498.         *translate="translate",
  6499.         *killtranslation="killtranslation",
  6500.         *killtranslate="killtranslate",
  6501.         *onclick="onclick",
  6502.         *roundrect="roundrect",
  6503.         *froundrect="froundrect",
  6504.         *roundrectangle="roundrectangle",
  6505.         *patternfill="patternfill",
  6506.         *hatchfill="hatchfill",
  6507.         *diafill="diafill",
  6508.         *diamondfill="diamondfill",
  6509.         *dotfill="dotfill",
  6510.         *gridfill="gridfill",
  6511.         *imagefill="imagefill",
  6512.         *xlogbase="xlogbase",
  6513.         *ylogbase="ylogbase",
  6514.         *xlogscale="xlogscale",
  6515.         *ylogscale="ylogscale",
  6516.         *xylogscale="xylogscale",
  6517.         *intooltip="intooltip",
  6518.         *replyformat="replyformat",
  6519.         *floodfill="floodfill",
  6520.         *filltoborder="filltoborder",
  6521.         *clickfill="clickfill",
  6522.         *setpixel="setpixel",
  6523.         *pixels="pixels",
  6524.         *pixelsize="pixelsize",
  6525.         *clickfillmarge="clickfillmarge",
  6526.         *xaxis="xaxis",
  6527.         *yaxis="yaxis",
  6528.         *xaxistext="xaxistext",
  6529.         *yaxistext="yaxistext",
  6530.         *piechart="piechart",
  6531.         *legend="legend",
  6532.         *legendcolors="legendcolors",
  6533.         *xlabel="xlabel",
  6534.         *ylabel="ylabel",
  6535.         *barchart="barchart",
  6536.         *linegraph="linegraph",
  6537.         *clock="clock",
  6538.         *animate="animate",
  6539.         *video="video",
  6540.         *status="status",
  6541.         *nostatus="nostatus",
  6542.         *snaptogrid="snaptogrid",
  6543.         *xsnaptogrid="xsnaptogrid",
  6544.         *ysnaptogrid="ysnaptogrid",
  6545.         *userinput_xy="userinput_xy",
  6546.         *usertextarea_xy="usertextarea_xy",
  6547.         *jsmath="jsmath",
  6548.         *trace_jscurve="trace_jscurve",
  6549.         *setlimits="setlimits",
  6550.         *jscurve="jscurve",
  6551.         *jsplot="jsplot",
  6552.         *sgraph="sgraph",
  6553.         *title="title",
  6554.         *centerstring="centerstring",
  6555.         *xunit="xunit",
  6556.         *yunit="yunit",
  6557.         *slider="slider",
  6558.         *killslider="killslider";
  6559.  
  6560.         while(((c = getc(infile)) != EOF)&&(c!='\n')&&(c!=',')&&(c!='=')&&(c!='\r')){
  6561.             if( i == 0 && (c == ' ' || c == '\t') ){
  6562.         continue; /* white spaces or tabs allowed before first command identifier */
  6563.             }
  6564.             else
  6565.             {
  6566.         if( c == ' ' || c == '\t' ){
  6567.             break;
  6568.         }
  6569.         else
  6570.         {
  6571.             temp[i] = c;
  6572.             if(i > MAX_INT - 2){canvas_error("command string too long !");}
  6573.             i++;
  6574.         }
  6575.             }
  6576.             if(temp[0] == '#') break;
  6577.         }
  6578.         if (c == EOF) finished = 1;
  6579.  
  6580.         if (c == '\n' || c == '\r') {
  6581.         line_number++;
  6582.         if (i == 0) { return EMPTY; }
  6583.         } else if (c == EOF) {
  6584.         return 0;
  6585.         }
  6586.  
  6587.         temp[i]='\0';
  6588.         input_type=(char*)my_newmem(strlen(temp));
  6589.         snprintf(input_type,sizeof(temp),"%s",temp);
  6590.  
  6591.         if( strcmp(input_type, size) == 0 ){
  6592.         free(input_type);
  6593.         return SIZE;
  6594.         }
  6595.         if( strcmp(input_type, xrange) == 0 ){
  6596.         free(input_type);
  6597.         return XRANGE;
  6598.         }
  6599.         if( strcmp(input_type, rangex) == 0 ){
  6600.         free(input_type);
  6601.         return XRANGE;
  6602.         }
  6603.         if( strcmp(input_type, trange) == 0 ){
  6604.         free(input_type);
  6605.         return TRANGE;
  6606.         }
  6607.         if( strcmp(input_type, ranget) == 0 ){
  6608.         free(input_type);
  6609.         return TRANGE;
  6610.         }
  6611.         if( strcmp(input_type, yrange) == 0 ){
  6612.         free(input_type);
  6613.         return YRANGE;
  6614.         }
  6615.         if( strcmp(input_type, rangey) == 0 ){
  6616.         free(input_type);
  6617.         return YRANGE;
  6618.         }
  6619.         if( strcmp(input_type, linewidth) == 0 ){
  6620.         free(input_type);
  6621.         return LINEWIDTH;
  6622.         }
  6623.         if( strcmp(input_type, dashed) == 0 ){
  6624.         free(input_type);
  6625.         return DASHED;
  6626.         }
  6627.         if( strcmp(input_type, dashtype) == 0 ){
  6628.         free(input_type);
  6629.         return DASHTYPE;
  6630.         }
  6631.         if( strcmp(input_type, axisnumbering) == 0 ){
  6632.         free(input_type);
  6633.         return AXIS_NUMBERING;
  6634.         }
  6635.         if( strcmp(input_type, axisnumbers) == 0 ){
  6636.         free(input_type);
  6637.         return AXIS_NUMBERING;
  6638.         }
  6639.         if( strcmp(input_type, axis) == 0 ){
  6640.         free(input_type);
  6641.         return AXIS;
  6642.         }
  6643.         if( strcmp(input_type, grid) == 0 ){
  6644.         free(input_type);
  6645.         return GRID;
  6646.         }
  6647.         if( strcmp(input_type, parallel) == 0 ){
  6648.         free(input_type);
  6649.         return PARALLEL;
  6650.         }
  6651.         if( strcmp(input_type, hline) == 0 ||  strcmp(input_type, horizontalline) == 0 ){
  6652.         free(input_type);
  6653.         return HLINE;
  6654.         }
  6655.         if( strcmp(input_type, vline) == 0 ||  strcmp(input_type, verticalline) == 0 ){
  6656.         free(input_type);
  6657.         return VLINE;
  6658.         }
  6659.         if( strcmp(input_type, line) == 0 ){
  6660.         free(input_type);
  6661.         return LINE;
  6662.         }
  6663.         if( strcmp(input_type, seg) == 0 ||  strcmp(input_type, segment) == 0 ){
  6664.         free(input_type);
  6665.         return SEGMENT;
  6666.         }
  6667.         if( strcmp(input_type, dsegment) == 0 ){
  6668.         free(input_type);
  6669.         use_dashed = TRUE;
  6670.         return SEGMENT;
  6671.         }
  6672.         if( strcmp(input_type, crosshairsize) == 0 ){
  6673.         free(input_type);
  6674.         return CROSSHAIRSIZE;
  6675.         }
  6676.         if( strcmp(input_type, arrowhead) == 0 ){
  6677.         free(input_type);
  6678.         return ARROWHEAD;
  6679.         }
  6680.         if( strcmp(input_type, crosshairs) == 0 ){
  6681.         free(input_type);
  6682.         return CROSSHAIRS;
  6683.         }
  6684.         if( strcmp(input_type, crosshair) == 0 ){
  6685.         free(input_type);
  6686.         return CROSSHAIR;
  6687.         }
  6688.         if( strcmp(input_type, onclick) == 0 ){
  6689.         free(input_type);
  6690.         return ONCLICK;
  6691.         }
  6692.         if( strcmp(input_type, drag) == 0 ){
  6693.         free(input_type);
  6694.         return DRAG;
  6695.         }
  6696.         if( strcmp(input_type, userdraw) == 0 ){
  6697.         free(input_type);
  6698.         return USERDRAW;
  6699.         }
  6700.         if( strcmp(input_type, highlight) == 0 || strcmp(input_type, style) == 0 ){
  6701.         free(input_type);
  6702.         return STYLE;
  6703.         }
  6704.         if( strcmp(input_type, fillcolor) == 0 ){
  6705.         free(input_type);
  6706.         return FILLCOLOR;
  6707.         }
  6708.         if( strcmp(input_type, strokecolor) == 0 ){
  6709.         free(input_type);
  6710.         return STROKECOLOR;
  6711.         }
  6712.         if( strcmp(input_type, filled) == 0  ){
  6713.         free(input_type);
  6714.         return FILLED;
  6715.         }
  6716.         if( strcmp(input_type, http) == 0 ){
  6717.         free(input_type);
  6718.         return HTTP;
  6719.         }
  6720.         if( strcmp(input_type, rays) == 0 ){
  6721.         free(input_type);
  6722.         return RAYS;
  6723.         }
  6724.         if( strcmp(input_type, lattice) == 0 ){
  6725.         free(input_type);
  6726.         return LATTICE;
  6727.         }
  6728.         if( strcmp(input_type, bgimage) == 0 ){
  6729.         free(input_type);
  6730.         return BGIMAGE;
  6731.         }
  6732.         if( strcmp(input_type, bgcolor) == 0 ){
  6733.         free(input_type);
  6734.         return BGCOLOR;
  6735.         }
  6736.         if( strcmp(input_type, backgroundimage) == 0 ){
  6737.         free(input_type);
  6738.         return BGIMAGE;
  6739.         }
  6740.         if( strcmp(input_type, text) == 0 ){
  6741.         free(input_type);
  6742.         return FLY_TEXT;
  6743.         }
  6744.         if( strcmp(input_type, textup) == 0 ){
  6745.         free(input_type);
  6746.         return FLY_TEXTUP;
  6747.         }
  6748.         if( strcmp(input_type, mouse) == 0 ){
  6749.         free(input_type);
  6750.         return MOUSE;
  6751.         }
  6752.         if( strcmp(input_type, mousex) == 0 ){
  6753.         free(input_type);
  6754.         return MOUSEX;
  6755.         }
  6756.         if( strcmp(input_type, mousey) == 0 ){
  6757.         free(input_type);
  6758.         return MOUSEY;
  6759.         }
  6760.         if( strcmp(input_type, mouse_degree) == 0 ){
  6761.         free(input_type);
  6762.         return MOUSE_DEGREE;
  6763.         }
  6764.         if( strcmp(input_type, mouse_display) == 0 ){
  6765.         free(input_type);
  6766.         return MOUSE_DISPLAY;
  6767.         }
  6768.         if( strcmp(input_type, mouseprecision) == 0 ){
  6769.         free(input_type);
  6770.         return MOUSE_PRECISION;
  6771.         }
  6772.         if( strcmp(input_type, precision) == 0 ){
  6773.         free(input_type);
  6774.         return MOUSE_PRECISION;
  6775.         }
  6776.         if( strcmp(input_type, curve) == 0 ){
  6777.         free(input_type);
  6778.         return CURVE;
  6779.         }
  6780.         if( strcmp(input_type, dcurve) == 0 ){
  6781.         use_dashed = TRUE;
  6782.         free(input_type);
  6783.         return CURVE;
  6784.         }
  6785.         if( strcmp(input_type, plot) == 0 ){
  6786.         free(input_type);
  6787.         return CURVE;
  6788.         }
  6789.         if( strcmp(input_type, dplot) == 0 ){
  6790.         use_dashed = TRUE;
  6791.         free(input_type);
  6792.         return CURVE;
  6793.         }
  6794.         if( strcmp(input_type, levelcurve) == 0 ){
  6795.         free(input_type);
  6796.         return LEVELCURVE;
  6797.         }
  6798.         if( strcmp(input_type, plotsteps) == 0 ){
  6799.         free(input_type);
  6800.         return PLOTSTEPS;
  6801.         }
  6802.         if( strcmp(input_type, plotstep) == 0 ){
  6803.         free(input_type);
  6804.         return PLOTSTEPS;
  6805.         }
  6806.         if( strcmp(input_type, tsteps) == 0 ){
  6807.         free(input_type);
  6808.         return PLOTSTEPS;
  6809.         }
  6810.         if( strcmp(input_type, fontsize) == 0 ){
  6811.         free(input_type);
  6812.         return FONTSIZE;
  6813.         }
  6814.         if( strcmp(input_type, fontcolor) == 0 ){
  6815.         free(input_type);
  6816.         return FONTCOLOR;
  6817.         }
  6818.         if( strcmp(input_type, arrow) == 0 ){
  6819.         free(input_type);
  6820.         return ARROW;
  6821.         }
  6822.         if( strcmp(input_type, arrow2) == 0 ){
  6823.         free(input_type);
  6824.         return ARROW2;
  6825.         }
  6826.         if( strcmp(input_type, darrow) == 0 ){
  6827.         free(input_type);
  6828.         use_dashed = TRUE;
  6829.         return ARROW;
  6830.         }
  6831.         if( strcmp(input_type, darrow2) == 0 ){
  6832.         free(input_type);
  6833.         use_dashed = TRUE;
  6834.         return ARROW2;
  6835.         }
  6836.         if( strcmp(input_type, zoom) == 0 ){
  6837.         free(input_type);
  6838.         return ZOOM;
  6839.         }
  6840.         if( strcmp(input_type, triangle) == 0 ){
  6841.         free(input_type);
  6842.         return TRIANGLE;
  6843.         }
  6844.         if( strcmp(input_type, ftriangle) == 0 ){
  6845.         free(input_type);
  6846.         use_filled = TRUE;
  6847.         return TRIANGLE;
  6848.         }
  6849.         if( strcmp(input_type, input) == 0 ){
  6850.         free(input_type);
  6851.         return INPUT;
  6852.         }
  6853.         if( strcmp(input_type, inputstyle) == 0 ){
  6854.         free(input_type);
  6855.         return INPUTSTYLE;
  6856.         }
  6857.         if( strcmp(input_type, textarea) == 0 ){
  6858.         free(input_type);
  6859.         return TEXTAREA;
  6860.         }
  6861.         if( strcmp(input_type, mathml) == 0 ){
  6862.         free(input_type);
  6863.         return MATHML;
  6864.         }
  6865.         if( strcmp(input_type, html) == 0 ){
  6866.         free(input_type);
  6867.         return MATHML;
  6868.         }
  6869.         if( strcmp(input_type, fontfamily) == 0 ){
  6870.         free(input_type);
  6871.         return FONTFAMILY;
  6872.         }
  6873.         if( strcmp(input_type, lines) == 0  ||  strcmp(input_type, polyline) == 0 ){
  6874.         free(input_type);
  6875.         return POLYLINE;
  6876.         }
  6877.         if( strcmp(input_type, rect) == 0  ||  strcmp(input_type, rectangle) == 0 ){
  6878.         free(input_type);
  6879.         return RECT;
  6880.         }
  6881.         if( strcmp(input_type, roundrect) == 0  ||  strcmp(input_type, roundrectangle) == 0 ){
  6882.         free(input_type);
  6883.         return ROUNDRECT;
  6884.         }
  6885.         if( strcmp(input_type, froundrect) == 0 ){
  6886.         free(input_type);
  6887.         use_filled = TRUE;
  6888.         return ROUNDRECT;
  6889.         }
  6890.         if( strcmp(input_type, square) == 0 ){
  6891.         free(input_type);
  6892.         return SQUARE;
  6893.         }
  6894.         if( strcmp(input_type, fsquare) == 0 ){
  6895.         free(input_type);
  6896.         use_filled = TRUE;
  6897.         return SQUARE;
  6898.         }
  6899.         if( strcmp(input_type, dline) == 0 ){
  6900.         use_dashed = TRUE;
  6901.         free(input_type);
  6902.         return LINE;
  6903.         }
  6904.         if( strcmp(input_type, dvline) == 0 ){
  6905.         use_dashed = TRUE;
  6906.         free(input_type);
  6907.         return VLINE;
  6908.         }
  6909.         if( strcmp(input_type, dhline) == 0 ){
  6910.         use_dashed = TRUE;
  6911.         free(input_type);
  6912.         return HLINE;
  6913.         }
  6914.         if( strcmp(input_type, frect) == 0 || strcmp(input_type, frectangle) == 0 ){
  6915.         use_filled = TRUE;
  6916.         free(input_type);
  6917.         return RECT;
  6918.         }
  6919.         if( strcmp(input_type, fcircle) == 0  ||  strcmp(input_type, disk) == 0 ){
  6920.         use_filled = TRUE;
  6921.         free(input_type);
  6922.         return CIRCLE;
  6923.         }
  6924.         if( strcmp(input_type, circle) == 0 ){
  6925.         free(input_type);
  6926.         return CIRCLE;
  6927.         }
  6928.         if( strcmp(input_type, point) == 0 ){
  6929.         free(input_type);
  6930.         return POINT;
  6931.         }
  6932.         if( strcmp(input_type, points) == 0 ){
  6933.         free(input_type);
  6934.         return POINTS;
  6935.         }
  6936.         if( strcmp(input_type, filledarc) == 0 ){
  6937.         use_filled = TRUE;
  6938.         free(input_type);
  6939.         return ARC;
  6940.         }
  6941.         if( strcmp(input_type, arc) == 0 ){
  6942.         free(input_type);
  6943.         return ARC;
  6944.         }
  6945.         if( strcmp(input_type, poly) == 0 ||  strcmp(input_type, polygon) == 0 ){
  6946.         free(input_type);
  6947.         return POLY;
  6948.         }
  6949.         if( strcmp(input_type, fpoly) == 0 ||  strcmp(input_type, filledpoly) == 0 || strcmp(input_type,filledpolygon) == 0  || strcmp(input_type,fpolygon) == 0  ){
  6950.         use_filled = TRUE;
  6951.         free(input_type);
  6952.         return POLY;
  6953.         }
  6954.         if( strcmp(input_type, ellipse) == 0){
  6955.         free(input_type);
  6956.         return ELLIPSE;
  6957.         }
  6958.         if( strcmp(input_type, fill) == 0 ){
  6959.         free(input_type);
  6960.         return FLOODFILL;
  6961.         }
  6962.         if( strcmp(input_type, string) == 0 ){
  6963.         free(input_type);
  6964.         return STRING;
  6965.         }
  6966.         if( strcmp(input_type, stringup) == 0 ){
  6967.         free(input_type);
  6968.         return STRINGUP;
  6969.         }
  6970.         if( strcmp(input_type, opacity) == 0 ){
  6971.         free(input_type);
  6972.         return OPACITY;
  6973.         }
  6974.         if( strcmp(input_type, comment) == 0){
  6975.         free(input_type);
  6976.         return COMMENT;
  6977.         }
  6978.         if( strcmp(input_type, end) == 0){
  6979.         free(input_type);
  6980.         return END;
  6981.         }
  6982.         if( strcmp(input_type, fellipse) == 0){
  6983.         free(input_type);
  6984.         use_filled = TRUE;
  6985.         return ELLIPSE;
  6986.         }      
  6987.         if( strcmp(input_type, blink) == 0 ){
  6988.         free(input_type);
  6989.         return BLINK;
  6990.         }
  6991.         if( strcmp(input_type, button) == 0){
  6992.         free(input_type);
  6993.         return BUTTON;
  6994.         }
  6995.         if( strcmp(input_type, translation) == 0 ||  strcmp(input_type, translate) == 0  ){
  6996.         free(input_type);
  6997.         return TRANSLATION;
  6998.         }
  6999.         if( strcmp(input_type, killtranslation) == 0 ||  strcmp(input_type, killtranslate) == 0){
  7000.         free(input_type);
  7001.         return KILLTRANSLATION;
  7002.         }
  7003.         if( strcmp(input_type, rotate) == 0){
  7004.         free(input_type);
  7005.         return ROTATE;
  7006.         }
  7007.         if( strcmp(input_type, affine) == 0){
  7008.         free(input_type);
  7009.         return AFFINE;
  7010.         }
  7011.         if( strcmp(input_type, killaffine) == 0){
  7012.         free(input_type);
  7013.         return KILLAFFINE;
  7014.         }
  7015.         if( strcmp(input_type, audio) == 0 ){
  7016.         free(input_type);
  7017.         return AUDIO;
  7018.         }
  7019.         if( strcmp(input_type, audioobject) == 0 ){
  7020.         free(input_type);
  7021.         return AUDIOOBJECT;
  7022.         }
  7023.         if( strcmp(input_type, slider) == 0 ){
  7024.         free(input_type);
  7025.         return SLIDER;
  7026.         }
  7027.         if( strcmp(input_type, killslider) == 0 ){
  7028.         free(input_type);
  7029.         return KILLSLIDER;
  7030.         }
  7031.         if( strcmp(input_type, copy) == 0 ){
  7032.         free(input_type);
  7033.         return COPY;
  7034.         }
  7035.         if( strcmp(input_type, copyresized) == 0 ){
  7036.         free(input_type);
  7037.         return COPYRESIZED;
  7038.         }
  7039.         if( strcmp(input_type, patternfill) == 0 ){
  7040.         free(input_type);
  7041.         return PATTERNFILL;
  7042.         }
  7043.         if( strcmp(input_type, hatchfill) == 0 ){
  7044.         free(input_type);
  7045.         return HATCHFILL;
  7046.         }
  7047.         if( strcmp(input_type, diafill) == 0  || strcmp(input_type, diamondfill) == 0  ){
  7048.         free(input_type);
  7049.         return DIAMONDFILL;
  7050.         }
  7051.         if( strcmp(input_type, dotfill) == 0 ){
  7052.         free(input_type);
  7053.         return DOTFILL;
  7054.         }
  7055.         if( strcmp(input_type, gridfill) == 0 ){
  7056.         free(input_type);
  7057.         return GRIDFILL;
  7058.         }
  7059.         if( strcmp(input_type, imagefill) == 0 ){
  7060.         free(input_type);
  7061.         return IMAGEFILL;
  7062.         }
  7063.         if( strcmp(input_type, clicktile_colors) == 0 ){
  7064.         free(input_type);
  7065.         return CLICKTILE_COLORS;
  7066.         }
  7067.         if( strcmp(input_type, clicktile) == 0 ){
  7068.         free(input_type);
  7069.         return CLICKTILE;
  7070.         }
  7071.         if( strcmp(input_type, xlogscale) == 0 ){
  7072.         free(input_type);
  7073.         return XLOGSCALE;
  7074.         }
  7075.         if( strcmp(input_type, ylogscale) == 0 ){
  7076.         free(input_type);
  7077.         return YLOGSCALE;
  7078.         }
  7079.         if( strcmp(input_type, xylogscale) == 0 ){
  7080.         free(input_type);
  7081.         return XYLOGSCALE;
  7082.         }
  7083.         if( strcmp(input_type, ylogscale) == 0 ){
  7084.         free(input_type);
  7085.         return YLOGSCALE;
  7086.         }
  7087.         if( strcmp(input_type, xlogbase) == 0 ){
  7088.         free(input_type);
  7089.         return XLOGBASE;
  7090.         }
  7091.         if( strcmp(input_type, ylogbase) == 0 ){
  7092.         free(input_type);
  7093.         return YLOGBASE;
  7094.         }
  7095.         if( strcmp(input_type, intooltip) == 0 ){
  7096.         free(input_type);
  7097.         return INTOOLTIP;
  7098.         }
  7099.         if( strcmp(input_type,video) == 0 ){
  7100.         free(input_type);
  7101.         return VIDEO;
  7102.         }
  7103.         if( strcmp(input_type,floodfill) == 0 || strcmp(input_type,fill) == 0 ){
  7104.         free(input_type);
  7105.         return FLOODFILL;
  7106.         }      
  7107.         if( strcmp(input_type,filltoborder) == 0 ){
  7108.         free(input_type);
  7109.         return FILLTOBORDER;
  7110.         }      
  7111.         if( strcmp(input_type,clickfill) == 0 ){
  7112.         free(input_type);
  7113.         return CLICKFILL;
  7114.         }      
  7115.         if( strcmp(input_type, replyformat) == 0 ){
  7116.         free(input_type);
  7117.         return REPLYFORMAT;
  7118.         }
  7119.         if( strcmp(input_type, pixelsize) == 0 ){
  7120.         free(input_type);
  7121.         return PIXELSIZE;
  7122.         }
  7123.         if( strcmp(input_type, setpixel) == 0 ){
  7124.         free(input_type);
  7125.         return SETPIXEL;
  7126.         }
  7127.         if( strcmp(input_type, pixels) == 0 ){
  7128.         free(input_type);
  7129.         return PIXELS;
  7130.         }
  7131.         if( strcmp(input_type, clickfillmarge) == 0 ){
  7132.         free(input_type);
  7133.         return CLICKFILLMARGE;
  7134.         }
  7135.         if( strcmp(input_type, xaxis) == 0 || strcmp(input_type, xaxistext) == 0 ){
  7136.         free(input_type);
  7137.         return X_AXIS_STRINGS;
  7138.         }
  7139.         if( strcmp(input_type, yaxis) == 0  ||  strcmp(input_type, yaxistext) == 0 ){
  7140.         free(input_type);
  7141.         return Y_AXIS_STRINGS;
  7142.         }
  7143.         if( strcmp(input_type, piechart) == 0  ){
  7144.         free(input_type);
  7145.         return PIECHART;
  7146.         }
  7147.         if( strcmp(input_type, barchart) == 0  ){
  7148.         free(input_type);
  7149.         return BARCHART;
  7150.         }
  7151.         if( strcmp(input_type, linegraph) == 0  ){
  7152.         free(input_type);
  7153.         return LINEGRAPH;
  7154.         }
  7155.         if( strcmp(input_type, clock) == 0  ){
  7156.         free(input_type);
  7157.         return CLOCK;
  7158.         }
  7159.         if( strcmp(input_type, legend) == 0  ){
  7160.         free(input_type);
  7161.         return LEGEND;
  7162.         }
  7163.         if( strcmp(input_type, legendcolors) == 0  ){
  7164.         free(input_type);
  7165.         return LEGENDCOLORS;
  7166.         }
  7167.         if( strcmp(input_type, xlabel) == 0  ){
  7168.         free(input_type);
  7169.         return XLABEL;
  7170.         }
  7171.         if( strcmp(input_type, ylabel) == 0  ){
  7172.         free(input_type);
  7173.         return YLABEL;
  7174.         }
  7175.         if( strcmp(input_type, animate) == 0  ){
  7176.         free(input_type);
  7177.         return ANIMATE;
  7178.         }
  7179.         /* these are bitmap related flydraw commmands...must be removed. eventually */
  7180.         if( strcmp(input_type, transparent) == 0 ){
  7181.         free(input_type);
  7182.         return TRANSPARENT;
  7183.         }
  7184.         if( strcmp(input_type, status) == 0 || strcmp(input_type, nostatus) == 0 ){
  7185.         free(input_type);
  7186.         return STATUS;
  7187.         }
  7188.         if( strcmp(input_type, snaptogrid) == 0 ){
  7189.         free(input_type);
  7190.         return SNAPTOGRID;
  7191.         }
  7192.         if( strcmp(input_type, xsnaptogrid) == 0 ){
  7193.         free(input_type);
  7194.         return XSNAPTOGRID;
  7195.         }
  7196.         if( strcmp(input_type, ysnaptogrid) == 0 ){
  7197.         free(input_type);
  7198.         return YSNAPTOGRID;
  7199.         }
  7200.         if( strcmp(input_type, userinput_xy) == 0 ){
  7201.         free(input_type);
  7202.         return USERINPUT_XY;
  7203.         }
  7204.         if( strcmp(input_type, usertextarea_xy) == 0 ){
  7205.         free(input_type);
  7206.         return USERTEXTAREA_XY;
  7207.         }
  7208.         if( strcmp(input_type, sgraph) == 0 ){
  7209.         free(input_type);
  7210.         return SGRAPH;
  7211.         }
  7212.         if( strcmp(input_type, jsmath) == 0 ){
  7213.         free(input_type);
  7214.         return JSMATH;
  7215.         }
  7216.         if( strcmp(input_type, trace_jscurve) == 0 ){
  7217.         free(input_type);
  7218.         return TRACE_JSCURVE;
  7219.         }
  7220.         if( strcmp(input_type, jscurve) == 0  ||  strcmp(input_type, jsplot) == 0 ){
  7221.         free(input_type);
  7222.         return JSCURVE;
  7223.         }
  7224.         if( strcmp(input_type, centerstring) == 0 || strcmp(input_type, title) == 0 ){
  7225.         free(input_type);
  7226.         return CENTERSTRING;
  7227.         }
  7228.         if( strcmp(input_type, setlimits) == 0 ){
  7229.         free(input_type);
  7230.         return SETLIMITS;
  7231.         }
  7232.         if( strcmp(input_type, xunit) == 0 ){
  7233.         free(input_type);
  7234.         return XUNIT;
  7235.         }
  7236.         if( strcmp(input_type, yunit) == 0 ){
  7237.         free(input_type);
  7238.         return YUNIT;
  7239.         }
  7240.         free(input_type);
  7241.         ungetc(c,infile);
  7242.         return 0;
  7243. }
  7244.  
  7245.