Subversion Repositories wimsdev

Rev

Rev 8224 | Rev 8244 | Go to most recent revision | Blame | Compare with Previous | Last modification | View Log | RSS feed

  1. /*
  2. 27/7/2013 version 0.01
  3. "Inspired" by FLY program: http://martin.gleeson.com/fly
  4. *********************************************************************************
  5. * J.M. Evers 7/2013                                                             *
  6. * This is all just amateur scriblings... So no copyrights.                      *
  7. * This source code file, and compiled objects derived from it,                  *
  8. * can be used and distributed without restriction, including for commercial use *
  9. * No warrenty whatsoever                                                        *
  10. *********************************************************************************
  11. */
  12. #include "canvasdraw.h"
  13.  
  14. /******************************************************************************
  15. **  Internal Functions
  16. ******************************************************************************/
  17. void    add_to_buffer(char *tmp); /* add tmp_buffer to the buffer */
  18. void    sync_input(FILE *infile);/* proceed with inputfile */
  19. void    add_javascript_functions(int js_functions[], int canvas_root_id);
  20. void    reset();/* reset some global variables like "use_filled" , "use_dashed" */
  21. int     get_token(FILE *infile); /* read next char until EOL*/
  22. /*
  23. int     x2px(double x);
  24. int     y2px(double y);
  25. */
  26. double  px2x(int x);
  27. double  px2y(int y);
  28. double  get_real(FILE *infile,int last); /* read a value; calculation and symbols allowed */
  29. char    *str_replace ( const char *word, const char *sub_word, const char *rep_word );
  30. char    *get_color(FILE *infile,int last); /* read hex-color or colorname -> hex */
  31. char    *get_string(FILE *infile,int last); /* get the string at the end of a command */
  32. char    *get_string_argument(FILE *infile,int last); /* the same, but with "comma" as  separator */
  33. char    *convert_hex2rgb(char *hexcolor);
  34. void    add_read_canvas(int reply_format,int reply_precision);
  35. void    make_js_include(int canvas_root_id);
  36. void    check_string_length(int length);/* checks if the length of string argument of command is correct */
  37. FILE    *js_include_file;
  38. FILE    *get_file(int *line_number, char **filename);
  39. FILE    *infile;    /* will be stdin */
  40. /******************************************************************************
  41. ** global
  42. ******************************************************************************/
  43. int finished = FALSE;/* main variable for signalling the end of the fly-script ; if finished = 1 ; write to stdout or canvasz */
  44. int line_number = 1;/* used in canvas_error() ; keep track of line number in canvasdraw/fly - script */
  45. /* set some variables to avoid trouble (NaN) in case of syntax and other usage errors */
  46. int xsize = 320;
  47. int ysize = 320;
  48. double xmin = 0.0;
  49. double xmax = 320.0;
  50. double ymin = 0.0;
  51. double ymax = 320.0;
  52. double tmax = 2;
  53. double tmin = -2;
  54. /* flag to indicate parsing of line status */
  55. int done = FALSE;
  56. int type; /* eg command number */
  57. int onclick = 0;/* 0 = noninteractive ; 1 = onclick ; 2 = draggable*/
  58. int slider = 0;/* slider=1 : x-values ; slider=2 : y-values;slider=3 angle values */
  59. int use_affine = FALSE;
  60. int use_rotate = FALSE;
  61. int use_filled = FALSE;
  62. int use_dashed = FALSE; /* dashing not natively supported in firefox  , for now... */
  63.  
  64. char buffer[MAX_BUFFER];/* contains js-functions with arguments ... all other basic code is directly printed into js-include file */
  65.  
  66. /******************************************************************************
  67. ** Main Program
  68. ******************************************************************************/
  69. int main(int argc, char *argv[]){
  70.     /* need unique id for every call to canvasdraw : rand(); is too slow...will result in many identical id's */
  71.     struct timeval tv;struct timezone tz;gettimeofday(&tv, &tz);unsigned int canvas_root_id = (unsigned int) tv.tv_usec;
  72.     infile = stdin;/* read flyscript via stdin */
  73.     int i,c;
  74.     double double_data[MAX_INT+1];
  75.     int int_data[MAX_INT+1];
  76.     for(i=0;i<MAX_INT;i++){int_data[i]=0;double_data[i]=0;}
  77.     int use_parametric = FALSE;/* will be reset after parametric plotting */
  78.     int use_axis = FALSE;
  79.     int use_axis_numbering = FALSE;
  80.     int use_pan_and_zoom = FALSE;
  81.     int use_safe_eval = FALSE; /* if true, add just once : js function to evaluate userinput values for plotting etc */
  82.     int use_js_math = FALSE; /* if true add js-function to convert math_function --> javascript math_function */
  83.     int use_js_plot = FALSE; /* if true , let js-engine plot the curve */
  84.     int line_width = 1;
  85.     int decimals = 2;
  86.     int precision = 100; /* 10 = 1;100=2;1000=3 decimal display for mouse coordinates or grid coordinate */
  87.     int use_userdraw = FALSE; /* flag to indicate user interaction: incompatible with "drag & drop" code !! */
  88.     int drag_type = -1;/* 0,1,2 : xy,x,y */
  89.     int use_tooltip = FALSE;
  90.     char *tooltip_text = "Click here";
  91.     char *temp = ""; /* */
  92.     char *bgcolor = "";/* used for background of canvas_div ; default is tranparent */
  93.     char *stroke_color = "255,0,0";
  94.     char *fill_color = "0,255,0";
  95.     char *font_family = "12px Ariel"; /* commands xaxistext,yaxistext,legend,text/textup/string/stringup may us this */
  96.     char *font_color = "#00000";
  97.     char *draw_type = "points";
  98.     char *fly_font = "normal";
  99.     char *input_style = "";
  100.     char *flytext = "";
  101.     char *affine_matrix = "[1,0,0,1,0,0]";
  102.     int pixelsize = 1;
  103.     int reply_format = 0;
  104.     int input_cnt = 0;
  105.     int ext_img_cnt = 0;
  106.     int slider_cnt = 0;
  107.     int font_size = 12;
  108.     int dashtype[2] = { 4 , 4 };
  109.     int js_function[MAX_JS_FUNCTIONS]; /* javascript functions include objects on demand basis : only once per object type */
  110.     for(i=0;i<MAX_JS_FUNCTIONS;i++){js_function[i]=0;}
  111.     int arrow_head = 8; /* size in px*/
  112.     int crosshair_size = 5; /* size in px*/
  113.     int plot_steps = 250;
  114.     int found_size_command = 0; /* 1 = found size ; 2 = found xrange; 3 = found yrange*/
  115.     int click_cnt = 1;
  116.     int clock_cnt = 0; /* counts the amount of clocks used -> unique object clock%d */
  117.     int linegraph_cnt = 0; /* identifier for command 'linegraph' ; multiple line graphs may be plotted in a single plot*/
  118.     int barchart_cnt = 0; /* identifier for command 'barchart' ; multiple charts may be plotted in a single plot*/
  119.     int legend_cnt = -1; /* to allow multiple legends to be used, for multiple piecharts etc  */
  120.     int reply_precision = 100; /* used for precision of student answers / drawings */
  121.     double angle = 0.0;
  122.     int clickfillmarge = 20;
  123.     int animation_type = 9; /* == object type curve in drag library */
  124.     int use_input_xy = 0; /* 1= input fields 2= textarea 3=calc y value*/
  125.     int use_slider_display = 0; /* in case of a slider, should we display it's value ?*/
  126.     size_t string_length = 0;
  127.     double stroke_opacity = 0.8;
  128.     double fill_opacity = 0.8;
  129.     char *URL = "http://localhost/images";
  130.     memset(buffer,'\0',MAX_BUFFER);
  131.     void *tmp_buffer = "";
  132.  
  133.     /* default writing a unzipped js-include file into wims getfile directory */
  134.     char *w_wims_session = getenv("w_wims_session");
  135.     if(  w_wims_session == NULL || *w_wims_session == 0 ){
  136.         canvas_error("Hmmm, your wims environment does not exist...\nCanvasdraw should be used within wims.");
  137.     }
  138.     int L0=strlen(w_wims_session) + 21;
  139.     char *getfile_dir = my_newmem(L0); /* create memory to fit string precisely */
  140.     snprintf(getfile_dir,L0, "../sessions/%s/getfile",w_wims_session);/* string will fit precisely  */
  141.     mode_t process_mask = umask(0); /* check if file exists */
  142.     int result = mkdir(getfile_dir, S_IRWXU | S_IRWXG | S_IRWXO);
  143.     if( result == 0 || errno == EEXIST ){
  144.      umask(process_mask); /* be sure to set correct permission */
  145.      char *w_session = getenv("w_session");
  146.      int L1 = (int) (strlen(w_session)) + find_number_of_digits(canvas_root_id) + 48;
  147.     char *getfile_cmd = my_newmem(L1); /* create memory to fit string precisely */
  148.      snprintf(getfile_cmd,L1,"wims.cgi?session=%s&cmd=getfile&special_parm=%d.js",w_session,canvas_root_id);/* extension ".gz" is MANDATORY for webserver */
  149.     /* write the include tag to html page:<script type="text/javascript" src="wims.cgi?session=%s&cmd=getfile&special_parm=11223344_js"></script> */
  150.     /* now write file into getfile dir*/
  151.     char *w_wims_home = getenv("w_wims_home"); /* "/home/users/wims" : we need absolute path for location */
  152.     int L2 = (int) (strlen(w_wims_home)) + (int) (strlen(w_wims_session)) + find_number_of_digits(canvas_root_id) + 23;
  153.     char *location = my_newmem(L2); /* create memory to fit string precisely */
  154.     snprintf(location,L2,"%s/sessions/%s/getfile/%d.js",w_wims_home,w_wims_session,canvas_root_id);/*absolute path */
  155.     js_include_file = fopen(location,"w");/* open the file location for writing */
  156.     /* check on opening...if nogood : mount readonly? disk full? permissions not set correctly? */
  157.     if(js_include_file == NULL){ canvas_error("SHOULD NOT HAPPEN : could not write to javascript include file...check your system logfiles !" );}
  158.  
  159. /* ----------------------------------------------------- */
  160. /* while more lines to process */
  161.  
  162.     while(!finished){
  163.         if(line_number>1 && found_size_command == 0){canvas_error("command \"size xsize,ysize\" needs to come first ! ");}
  164.         type = get_token(infile);
  165.         done = FALSE;
  166.         /*
  167.         @canvasdraw
  168.         @will try use the same syntax as flydraw or svgdraw to paint a html5 bitmap image<br />by generating a tailor-made javascript include file: providing only the js-functionality needed to perform the job.<br />thus ensuring a minimal strain on the client browser <br />(unlike some popular 'canvas-do-it-all' libraries, who have proven to be not suitable for low-end computers found in schools...)
  169.         @General syntax <ul><li>The transparency of all objects can be controlled by command 'opacity [0-255],[0,255]'</il><li>a line based object can be controlled by command 'linewidth int'</li><li>a line based object may be dashed by using keyword 'dashed' before the object command.<br />the dashing type can be controled by command 'dashtype int,int'</li><li>a fillable object can be set fillable by starting the object command with an 'f'<br />(like frect,fcircle,ftriangle...)<br />or by using the keyword 'filled' before the object command.<br />The fill colour will be the stroke colour...(19/10/2013)</li><li> all draggable objects may have a slider for translation / rotation; several objects may be translated / rotated by a single slider</li> <li> a draggable object can be set draggable by a preceding command 'drag x/y/xy'<br />The translation can be read by javascript:read_dragdrop();The replyformat is : object_number : x-orig : y-orig : x-drag : y-drag<br />The x-orig/y-orig will be returned in maximum precision (javascript float)...<br />the x-drag/y-drag will be returned in defined 'precision' number of decimals<br />Multiple objects may be set draggable / clickable (no limit)<br /> not all flydraw objects may be dragged / clicked<br />Only draggable / clickable objects will be scaled on zoom and will be translated in case of panning</li><li> a 'onclick object' can be set 'clickable' by the preceding keyword 'onclick'<br />not all flydraw objects can be set clickable</li><li><b>remarks using a ';' as command separator</b><br />commands with only numeric or colour arguments may be using a ';' as command separator (in stead of a new line)<br />commands with a string argument may not use a ';' as command separator !<br />these exceptions are not really straight forward... so keep this in mind.</li></ul>
  170.         */
  171.         switch(type){
  172.         case END:
  173.         finished = 1;
  174.         done = TRUE;
  175.         break;
  176.         case 0:
  177.             sync_input(infile);
  178.             break;
  179.         case COMMENT:
  180.             sync_input(infile);
  181.             break;
  182.         case EMPTY:
  183.             sync_input(infile);
  184.             break;
  185.         case SIZE:
  186.             /*
  187.             @size width,height
  188.             @set canvas size in pixels
  189.             @mandatory first command
  190.             @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
  191.             */
  192.             found_size_command = 1;
  193.             xsize = (int)(abs(round(get_real(infile,0)))); /* just to be sure that sizes > 0 */
  194.             ysize = (int)(abs(round(get_real(infile,1))));
  195.             /* sometimes we want xrange / yrange to be in pixels...without telling x/y-range */
  196.             xmin = 0;xmax = xsize;
  197.             ymin = 0;ymax = ysize;
  198.  
  199. /*
  200.  The sequence in which stuff is finally printed is important !!
  201.  for example, when writing a 'include.js" the may not be a "script tag <script>" etc etc
  202. */
  203. 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);
  204. fprintf(stdout,"<!-- include actual object code via include file -->\n<script type=\"text/javascript\" src=\"%s\"></script>\n",getfile_cmd);
  205. fprintf(js_include_file,"\n<!-- begin generated javascript include for canvasdraw -->\n\
  206. \"use strict\";\n\
  207. <!-- these variables and functions must be global -->\n\
  208. var read_dragdrop;\
  209. var read_canvas;\
  210. var set_clock;\
  211. var clear_draw_area;\
  212. var userdraw_x = [];var userdraw_y = [];var userdraw_radius = [];\n\
  213. var wims_canvas_function%d = function(){\n<!-- common used stuff -->\n\
  214. var xsize = %d;\
  215. var ysize = %d;\
  216. var precision = 100;\
  217. var canvas_div = document.getElementById(\"canvas_div%d\");\
  218. var create_canvas%d = function(canvas_type,size_x,size_y){var cnv;if(document.getElementById(\"wims_canvas%d\"+canvas_type)){ cnv = document.getElementById(\"wims_canvas%d\"+canvas_type);}else{try{ cnv = document.createElement(\"canvas\"); }catch(e){alert(\"Your browser does not support HTML5 CANVAS:GET FIREFOX !\");return;};canvas_div.appendChild(cnv);};cnv.width = size_x;cnv.height = size_y;cnv.style.top = 0;cnv.style.left = 0;cnv.style.position = \"absolute\";cnv.id = \"wims_canvas%d\"+canvas_type;return cnv;};\
  219. 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;};\
  220. 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);};};\
  221. 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);};};\
  222. 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);};};\
  223. 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);};};\
  224. function scale_x_radius(rx){return rx*xsize/(xmax - xmin);};\
  225. function scale_y_radius(ry){return ry*ysize/(ymax - ymin);};\
  226. function distance(x1,y1,x2,y2){return parseInt(Math.sqrt( (x1-x2)*(x1-x2) + (y1-y2)*(y1-y2) ));};\
  227. 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) ));};\
  228. 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;};\
  229. function slide(obj,dx,dy){for(var p = 0 ; p < obj.x.length; p++){obj.x[p] = x2px(obj.xorg[p] + dx);obj.y[p] = y2px(obj.yorg[p] + dy);};return obj;};\
  230. var x_use_snap_to_grid = 0;var y_use_snap_to_grid = 0;var snap_x = 1;var snap_y = 1;\
  231. function snap_to_x(x){return x2px(snap_x*(Math.round((px2x(x))/snap_x)));};\
  232. function snap_to_y(y){return y2px(snap_y*(Math.round((px2y(y))/snap_y)));};\
  233. var xlogbase = 10;\
  234. var ylogbase = 10;\
  235. var use_xlogscale = 0;\
  236. var use_ylogscale = 0;\
  237. var x_strings = null;\
  238. var y_strings = null;\
  239. var use_pan_and_zoom = 0;\
  240. var use_jsmath = 0;\
  241. var xstart = 0;\
  242. var ystart = 0;\
  243. var unit_x=\" \";\
  244. var unit_y=\" \";",canvas_root_id,xsize,ysize,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  245. /* default add the drag code : nearly always used ...*/
  246. add_drag_code(js_include_file,DRAG_CANVAS,canvas_root_id);
  247.             break;
  248.         case XRANGE:
  249.         /*
  250.         @ xrange xmin,xmax
  251.         @ if not given: 0,xsize (eg in pixels)
  252.         */
  253.             for(i = 0 ; i<2; i++){
  254.                 switch(i){
  255.                     case 0: xmin = get_real(infile,0);break;
  256.                     case 1: xmax = get_real(infile,1);break;
  257.                     default: break;
  258.                 }
  259.             }
  260.             if(xmin >= xmax){canvas_error(" xrange is not OK : xmin &lt; xmax !\n");}
  261.             fprintf(js_include_file,"var xmin = %f;var xmax = %f;",xmin,xmax);
  262.             found_size_command++;
  263.             break;
  264.         case YRANGE:
  265.         /*
  266.         @ yrange ymin,ymax
  267.         @ if not given 0,ysize (eg in pixels)
  268.         */
  269.             for(i = 0 ; i<2; i++){
  270.                 switch(i){
  271.                     case 0: ymin = get_real(infile,0);break;
  272.                     case 1: ymax = get_real(infile,1);break;
  273.                     default: break;
  274.                 }
  275.             }
  276.             if(ymin >= ymax){canvas_error(" yrange is not OK : ymin &lt; ymax !\n");}
  277.             fprintf(js_include_file,"var ymin = %f;var ymax = %f;",ymin,ymax);
  278.             found_size_command++;
  279.             break;
  280.         case TRANGE:
  281.         /*
  282.         @ trange tmin,tmax
  283.         @ default -2,2
  284.         */
  285.             use_parametric = TRUE;
  286.             for(i = 0 ; i<2; i++){
  287.                 switch(i){
  288.                     case 0: tmin = get_real(infile,0);break;
  289.                     case 1: tmax = get_real(infile,1);break;
  290.                     default: break;
  291.                 }
  292.             }
  293.             if(tmin >= tmax ){canvas_error(" trange is not OK : tmin &lt; tmax!\n");}
  294.             break;
  295.         case LINEWIDTH:
  296.         /*
  297.         @ linewidth int
  298.         @ default 1
  299.         */
  300.             line_width = (int) (get_real(infile,1));
  301.             break;
  302.         case ARROWHEAD:
  303.         /*
  304.         @ arrowhead int
  305.         @ default 8 (pixels)
  306.         */
  307.             arrow_head = (int) (get_real(infile,1));
  308.             break;
  309.         case CROSSHAIRSIZE:
  310.         /*
  311.         @ crosshairsize int
  312.         @ default 10 (px)
  313.         */
  314.             crosshair_size = (int) (get_real(infile,1));
  315.             break;
  316.         case CROSSHAIR:
  317.         /*
  318.         @ crosshair x,y,color
  319.         @ draw a single crosshair point at (x;y) in color 'color'
  320.         @ use command 'crosshairsize int' and / or 'linewidth int'  to adust
  321.         @ may be set draggable / onclick
  322.         */
  323.             for(i=0;i<3;i++){
  324.                 switch(i){
  325.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  326.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  327.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  328.                         decimals = find_number_of_digits(precision);
  329.                         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);
  330.                         click_cnt++;reset();
  331.                         break;
  332.                     default:break;
  333.                 }
  334.             }
  335.             break;
  336.         case CROSSHAIRS:
  337.         /*
  338.         @ crosshairs color,x1,y1,x2,y2,...,x_n,y_n
  339.         @ draw multiple crosshair points at given coordinates in color 'color'
  340.         @ use command 'crosshairsize int' and / or 'linewidth int'  to adust
  341.         @ may be set draggable / onclick individually (!)
  342.         */
  343.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  344.             fill_color = stroke_color;
  345.             i=0;
  346.             while( ! done ){     /* get next item until EOL*/
  347.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  348.                 if(i%2 == 0 ){
  349.                     double_data[i] = get_real(infile,0); /* x */
  350.                 }
  351.                 else
  352.                 {
  353.                     double_data[i] = get_real(infile,1); /* y */
  354.                 }
  355.                 i++;
  356.             }
  357.             decimals = find_number_of_digits(precision);
  358.             for(c=0 ; c < i-1 ; c = c+2){
  359.                 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);
  360.                 click_cnt++;
  361.             }
  362.             reset();
  363.             break;
  364.         case POINT:
  365.         /*
  366.         @ point x,y,color
  367.         @ draw a single point at (x;y) in color 'color'
  368.         @ use command 'linewidth int'  to adust size
  369.         @ may be set draggable / onclick
  370.         @ will not resize on zooming <br />(command 'circle x,y,r,color' will resize on zooming)
  371.         */
  372.             for(i=0;i<3;i++){
  373.                 switch(i){
  374.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  375.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  376.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  377.                     decimals = find_number_of_digits(precision);
  378.                     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);
  379.                     click_cnt++;break;
  380.                     default: break;
  381.                 }
  382.             }
  383.             reset();
  384.             break;
  385.         case POINTS:
  386.         /*
  387.         @ points color,x1,y1,x2,y2,...,x_n,y_n
  388.         @ draw multiple points at given coordinates in color 'color'
  389.         @ use command 'linewidth int'  to adust size
  390.         @ may be set draggable / onclick individually (!)
  391.         */
  392.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  393.             fill_color = stroke_color;
  394.             i=0;
  395.             while( ! done ){     /* get next item until EOL*/
  396.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  397.                 if(i%2 == 0 ){
  398.                     double_data[i] = get_real(infile,0); /* x */
  399.                 }
  400.                 else
  401.                 {
  402.                     double_data[i] = get_real(infile,1); /* y */
  403.                 }
  404.                 i++;
  405.             }
  406.             decimals = find_number_of_digits(precision);
  407.             for(c = 0 ; c < i-1 ; c = c+2){
  408.                 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);
  409.                 click_cnt++;
  410.             }
  411.             reset();
  412.             break;
  413.         case SEGMENT:
  414.         /*
  415.         @ segment x1,y1,x2,y2,color
  416.         @ draw a line segment between points (x1:y1)--(x2:y2) in color 'color'
  417.         @ may be set draggable / onclick
  418.         */
  419.             for(i=0;i<5;i++) {
  420.                 switch(i){
  421.                     case 0: double_data[0]= get_real(infile,0);break; /* x1-values */
  422.                     case 1: double_data[1]= get_real(infile,0);break; /* y1-values */
  423.                     case 2: double_data[2]= get_real(infile,0);break; /* x2-values */
  424.                     case 3: double_data[3]= get_real(infile,0);break; /* y2-values */
  425.                     case 4: stroke_color=get_color(infile,1);/* name or hex color */
  426.                         decimals = find_number_of_digits(precision);
  427.                         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);
  428.                         click_cnt++;reset();
  429.                         break;
  430.                     default: break;
  431.                 }
  432.             }
  433.             break;
  434.         case LINE:
  435.         /*
  436.         @ line x1,y1,x2,y2,color
  437.         @ draw a line through points (x1:y1)--(x2:y2) in color 'color'
  438.         @ or use command 'curve color,formula' to draw the line <br />(uses more points to draw the line; is however better draggable)
  439.         @ may be set draggable / onclick
  440.         */
  441.             for(i=0;i<5;i++){
  442.                 switch(i){
  443.                     case 0: double_data[10]= get_real(infile,0);break; /* x-values */
  444.                     case 1: double_data[11]= get_real(infile,0);break; /* y-values */
  445.                     case 2: double_data[12]= get_real(infile,0);break; /* x-values */
  446.                     case 3: double_data[13]= get_real(infile,0);break; /* y-values */
  447.                     case 4: stroke_color=get_color(infile,1);/* name or hex color */
  448.                     if( double_data[10] == double_data[12] ){ /* vertical line*/
  449.                         double_data[1] = xmin;
  450.                         double_data[3] = ymax;
  451.                         double_data[0] = double_data[10];
  452.                         double_data[2] = double_data[10];
  453.                     }
  454.                     else
  455.                     {
  456.                         if( double_data[11] == double_data[13] ){ /* horizontal line */
  457.                             double_data[1] = double_data[11];
  458.                             double_data[3] = double_data[11];
  459.                             double_data[0] = ymin;
  460.                             double_data[2] = xmax;
  461.                         }
  462.                         else
  463.                         {
  464.                         /* m */
  465.                         double_data[5] = (double_data[13] - double_data[11]) /(double_data[12] - double_data[10]);
  466.                         /* q */
  467.                         double_data[6] = double_data[11] - ((double_data[13] - double_data[11]) /(double_data[12] - double_data[10]))*double_data[10];
  468.  
  469.                         /*xmin,m*xmin+q,xmax,m*xmax+q*/
  470.  
  471.                             double_data[1] = (double_data[5])*(xmin)+(double_data[6]);
  472.                             double_data[3] = (double_data[5])*(xmax)+(double_data[6]);
  473.                             double_data[0] = xmin;
  474.                             double_data[2] = xmax;
  475.                         }
  476.                     }
  477.                     decimals = find_number_of_digits(precision);
  478.                     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);
  479.                     click_cnt++;reset();
  480.                     break;
  481.                 }
  482.             }
  483.             break;
  484.         case HLINE:
  485.         /*
  486.         @ hline x,y,color
  487.         @ draw a horizontal line through point (x:y) in color 'color'
  488.         @ or use command 'curve color,formula' to draw the line <br />(uses more points to draw the line; is however better draggable)
  489.         @ may be set draggable / onclick
  490.         */
  491.             for(i=0;i<3;i++) {
  492.                 switch(i){
  493.                     case 0: double_data[0] = get_real(infile,0);break; /* x-values */
  494.                     case 1: double_data[1] = get_real(infile,0);break; /* y-values */
  495.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  496.                     double_data[3] = double_data[1];
  497.                     decimals = find_number_of_digits(precision);
  498.                     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);
  499.                     click_cnt++;reset();
  500.                     break;
  501.                 }
  502.             }
  503.             break;
  504.         case VLINE:
  505.         /*
  506.         @ vline x,y,color
  507.         @ draw a vertical line through point (x:y) in color 'color'
  508.         @ may be set draggable / onclick
  509.         */
  510.             for(i=0;i<3;i++) {
  511.                 switch(i){
  512.                     case 0: double_data[0] = get_real(infile,0);break; /* x-values */
  513.                     case 1: double_data[1] = get_real(infile,0);break; /* y-values */
  514.                     case 2: stroke_color=get_color(infile,1);/* name or hex color */
  515.                         double_data[2] = double_data[0];
  516.                         decimals = find_number_of_digits(precision);
  517.                         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);
  518.                         click_cnt++;reset();
  519.                     break;
  520.                 }
  521.             }
  522.             break;
  523.         case SQUARE:
  524.         /*
  525.         @ square x,y,side (px) ,color
  526.         @ draw a square with left top corner (x:y) with side 'side' in color 'color'
  527.         @ use command 'fsquare x,y,side,color' for a filled square
  528.         @ use command/keyword  'filled' before command 'square x,y,side,color'
  529.         @ use command 'fillcolor color' before 'fsquare' to set the fill colour.
  530.         @ may be set draggable / onclick
  531.         */
  532.             for(i=0;i<5;i++){
  533.                 switch(i){
  534.                     case 0:double_data[0] = get_real(infile,0);break; /* x1-values */
  535.                     case 1:double_data[1] = get_real(infile,0);break; /* y1-values */
  536.                     case 2:double_data[2] = (int) (get_real(infile,0));break; /* width in px */
  537.                     case 3:
  538.                         stroke_color = get_color(infile,1);/* name or hex color */
  539.                         decimals = find_number_of_digits(precision);
  540.                         double_data[3] = double_data[0] + (xmax - xmin)*double_data[2]/xsize;
  541.                         double_data[4] = double_data[1] + -1*(ymax - ymin)*double_data[2]/ysize;
  542.                         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);
  543.                         click_cnt++;reset();
  544.                         break;
  545.                 }
  546.             }
  547.             break;
  548.         case ROUNDRECT:
  549.         /*
  550.         @ roundrect x1,y1,x2,y2,radius,color
  551.         @ use command 'froundrect x1,y1,x2,y2,radius,color' for a filled rectangle
  552.         @ use command/keyword  'filled' before command 'roundrect x1,y1,x2,y2,radius,color'
  553.         @ use command 'fillcolor color' before 'froundrect' to set the fill colour.
  554.         @ may be set draggable / onclick
  555.         */
  556.             for(i=0;i<6;i++){
  557.                 switch(i){
  558.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  559.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  560.                     case 2:double_data[2] = get_real(infile,0);break; /* x-values */
  561.                     case 3:double_data[3] = get_real(infile,0);break; /* y-values */
  562.                     case 4:int_data[0] = (int) (get_real(infile,0));break; /* radius value in pixels */
  563.                     case 5:stroke_color = get_color(infile,1);/* name or hex color */
  564.                         /* ensure no inverted roundrect is produced... */
  565.                         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];}
  566.                         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];}
  567.                         decimals = find_number_of_digits(precision);
  568.                         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);
  569.                         click_cnt++;reset();
  570.                     break;
  571.                 }
  572.             }
  573.             break;
  574.         case RECT:
  575.         /*
  576.         @ rect x1,y1,x2,y2,color
  577.         @ use command 'rect x1,y1,x2,y2,color' for a filled rectangle
  578.         @ use command/keyword  'filled' before command 'rect x1,y1,x2,y2,color'
  579.         @ use command 'fillcolor color' before 'frect' to set the fill colour.
  580.         @ may be set draggable / onclick
  581.         */
  582.             for(i=0;i<5;i++){
  583.                 switch(i){
  584.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  585.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  586.                     case 2:double_data[2] = get_real(infile,0);break; /* x-values */
  587.                     case 3:double_data[3] = get_real(infile,0);break; /* y-values */
  588.                     case 4:stroke_color = get_color(infile,1);/* name or hex color */
  589.                         decimals = find_number_of_digits(precision);
  590.                         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);
  591.                         click_cnt++;reset();
  592.                         break;
  593.                 }
  594.             }
  595.             break;
  596.         case POLYLINE:
  597.         /*
  598.         @ polyline color,x1,y1,x2,y2...x_n,y_n
  599.         @ may be set draggable / onclick
  600.         */
  601.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  602.             i=0;
  603.             c=0;
  604.             while( ! done ){     /* get next item until EOL*/
  605.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  606.                 for( c = 0 ; c < 2; c++){
  607.                     if(c == 0 ){
  608.                         double_data[i] = get_real(infile,0);
  609.                         i++;
  610.                     }
  611.                     else
  612.                     {
  613.                         double_data[i] = get_real(infile,1);
  614.                         i++;
  615.                     }
  616.                 }
  617.             }
  618.             /* draw path : not closed & not filled */
  619.             decimals = find_number_of_digits(precision);
  620.             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);
  621.             click_cnt++;reset();
  622.             break;
  623.         case POLY:
  624.         /*
  625.         @ poly color,x1,y1,x2,y2...x_n,y_n
  626.         @ draw closed polygon
  627.         @ use command 'fpoly' to fill it, use command 'fillcolor color' to set the fill color
  628.         @ may be set draggable / onclick
  629.         */
  630.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  631.             i=0;
  632.             c=0;
  633.             while( ! done ){     /* get next item until EOL*/
  634.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  635.                 for( c = 0 ; c < 2; c++){
  636.                     if(c == 0 ){
  637.                         double_data[i] = get_real(infile,0);
  638.                         i++;
  639.                     }
  640.                     else
  641.                     {
  642.                         double_data[i] = get_real(infile,1);
  643.                         i++;
  644.                     }
  645.                 }
  646.             }
  647.             /* draw path :  closed & optional filled */
  648.                 decimals = find_number_of_digits(precision);
  649.                 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);
  650.                 click_cnt++;reset();
  651.             break;
  652.         case ARC:
  653.         /*
  654.          @ arc xc,yc,width,height,start_angle,end_angle,color
  655.          @ can not be set "onclick" or "drag xy"
  656.          @ attention: width == height == radius in pixels
  657.          @ will not zoom in or zoom out (because radius is given in pixels an not in x/y-system !). Panning will work
  658.          @ use command 'angle' for scalable angle
  659.         */
  660.             for(i=0;i<7;i++){
  661.                 switch(i){
  662.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  663.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  664.                     case 2:int_data[0] = (int)(get_real(infile,0));break; /* width in pixels ! */
  665.                     case 3:int_data[1] = (int)(get_real(infile,0));break; /* height in pixels ! */
  666.                     case 4:double_data[2] = get_real(infile,0);break; /* start angle in degrees */
  667.                     case 5:double_data[3] = get_real(infile,0);break; /* end angle in degrees */
  668.                     case 6:stroke_color = get_color(infile,1);/* name or hex color */
  669.                     /* in Shape library:
  670.                         x[0] = x[1] = xc
  671.                         y[0] = y[1] = yc
  672.                         w[0] = w[1] = radius = width = height
  673.                         h[0] = start_angle ; h[1] = end_engle
  674.                     */
  675.                         decimals = find_number_of_digits(precision);
  676.                         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);
  677.                         reset();
  678.                     break;
  679.                 }
  680.             }
  681.             break;
  682.         case ANGLE:
  683.         /*
  684.          @ angle xc,yc,width,start_angle,end_angle,color
  685.          @ width is in x-range
  686.          @ will zoom in/out
  687.          @ if size is controlled by command 'slider' use radians to set limits of slider.
  688.         */
  689.             for(i=0;i<7;i++){
  690.                 switch(i){
  691.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  692.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  693.                     case 2:double_data[2] = get_real(infile,0);break; /* width in pixels ! */
  694.                     case 3:double_data[3] = get_real(infile,0);break; /* start angle in degrees */
  695.                     case 4:double_data[4] = get_real(infile,0);break; /* end angle in degrees */
  696.                     case 5:stroke_color = get_color(infile,1);/* name or hex color */
  697.                         decimals = find_number_of_digits(precision);
  698.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,17,[%.*f,%.*f],[%.*f,%.*f],[%.*f,%.*f],[%.*f,%.*f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[0],decimals,double_data[1],decimals,double_data[1],decimals,double_data[2],decimals,double_data[2],decimals,double_data[3],decimals,double_data[4],line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  699.                         reset();
  700.                     break;
  701.                 }
  702.             }
  703.             break;
  704.  
  705.         case ELLIPSE:
  706.         /*
  707.         @ ellipse xc,yc,radius_x,radius_y,color
  708.         @ a ellipse with center xc/yc in x/y-range
  709.         @ radius_x and radius_y are in pixels
  710.         @ may be set draggable / onclick
  711.         @ will shrink / expand on zoom out / zoom in
  712.         */
  713.             for(i=0;i<5;i++){
  714.                 switch(i){
  715.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  716.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  717.                     case 2:double_data[2] = get_real(infile,0);break; /* rx -> px  */
  718.                     case 3:double_data[3] = get_real(infile,0);break; /* ry -> px  */
  719.                     case 4:stroke_color = get_color(infile,1);/* name or hex color */
  720.                         decimals = find_number_of_digits(precision);
  721.                         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);
  722.                         click_cnt++;reset();
  723.                     break;
  724.                 }
  725.             }
  726.             break;
  727.         case DASHTYPE:
  728.         /*
  729.         @ dashtype int ,int
  730.         @ When dashed is set, the objects will be drawn with this dashtyp
  731.         @ default value "dashtype 2,2"
  732.         */
  733.             for(i=0;i<2;i++){
  734.                 switch(i){
  735.                     case 0 : dashtype[0] = (int) line_width*( get_real(infile,0)) ; break;
  736.                     case 1 : dashtype[1] = (int) line_width*( get_real(infile,1)) ; break;
  737.                 }
  738.             }
  739.         break;
  740.         case CIRCLE:
  741.         /*
  742.         @ circle xc,yc,width (2*r in pixels),color
  743.         @ use command 'fcircle xc,yc,d,color' or command 'filled' for a filled disk
  744.         @ use command 'fillcolor color' to set the fillcolor
  745.         @ may be set draggable / onclick
  746.         @ will shrink / expand on zoom out / zoom in
  747.         */
  748.             for(i=0;i<4;i++){
  749.                 switch(i){
  750.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  751.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  752.                     case 2: double_data[2] = px2x((get_real(infile,0))/2) - px2x(0);break; /* for zoom in/out : radius in 'dx' xrange*/
  753.                     case 3: stroke_color = get_color(infile,1);/* name or hex color */
  754.                         decimals = find_number_of_digits(precision);
  755.                         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);
  756.                         click_cnt++;reset();
  757.                     break;
  758.                 }
  759.             }
  760.             break;
  761.         case RAYS:
  762.         /*
  763.          @ rays color,xc,yc,x1,y1,x2,y2,x3,y3...x_n,y_n
  764.          @ draw rays in color 'color' and center (xc:yc)
  765.          @ may be set draggable or onclick (every individual ray)
  766.         */
  767.             stroke_color=get_color(infile,0);
  768.             fill_color = stroke_color;
  769.             double_data[0] = get_real(infile,0);/* xc */
  770.             double_data[1] = get_real(infile,0);/* yc */
  771.             i=2;
  772.             while( ! done ){     /* get next item until EOL*/
  773.                 if(i > MAX_INT - 1){canvas_error("in command rays to many points / rays in argument: repeat command multiple times to fit");}
  774.                 if(i%2 == 0 ){
  775.                     double_data[i] = get_real(infile,0); /* x */
  776.                 }
  777.                 else
  778.                 {
  779.                     double_data[i] = get_real(infile,1); /* y */
  780.                 }
  781.             fprintf(js_include_file,"/* double_data[%d] = %f */\n",i,double_data[i]);
  782.                 i++;
  783.             }
  784.  
  785.             if( i%2 != 0 ){canvas_error("in command rays: unpaired x or y value");}
  786.             decimals = find_number_of_digits(precision);
  787.             for(c=2; c<i;c = c+2){
  788.                 click_cnt++;
  789.                 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);
  790.             }
  791.             reset();
  792.             break;
  793.         case ARROW:
  794.         /*
  795.         @ arrow x1,y1,x2,y2,h,color
  796.         @ draw a single headed arrow/vector from (x1:y1) to (x2:y2)<br />with arrowhead size h in px and in color 'color'
  797.         @ use command 'linewidth int' to adjust thickness of the arrow
  798.         @ may be set draggable / onclick
  799.         */
  800.             for(i=0;i<6;i++){
  801.                 switch(i){
  802.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  803.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  804.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  805.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  806.                     case 4: arrow_head = (int) get_real(infile,0);break;/* h */
  807.                     case 5: stroke_color = get_color(infile,1);/* name or hex color */
  808.                         decimals = find_number_of_digits(precision);
  809.                         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);
  810.                         click_cnt++;
  811.                         reset();
  812.                         break;
  813.                 }
  814.             }
  815.             break;
  816.         case ARROW2:
  817.         /*
  818.         @ arrow2 x1,y1,x2,y2,h,color
  819.         @ draw a double headed arrow/vector from (x1:y1) to (x2:y2)<br />with arrowhead size h in px and  in color 'color'
  820.         @ use command 'arrowhead int' to adjust the arrow head size
  821.         @ use command 'linewidth int' to adjust thickness of the arrow
  822.         @ may be set draggable / onclick
  823.         */
  824.             for(i=0;i<6;i++){
  825.                 switch(i){
  826.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  827.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  828.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  829.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  830.                     case 4: arrow_head = (int) get_real(infile,0);break;/* h */
  831.                     case 5: stroke_color = get_color(infile,1);/* name or hex color */
  832.                         decimals = find_number_of_digits(precision);
  833.                         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);
  834.                         click_cnt++;reset();
  835.                         break;
  836.                 }
  837.             }
  838.             break;
  839.         case PARALLEL:
  840.         /*
  841.          @ parallel x1,y1,x2,y2,dx,dy,n,[colorname or #hexcolor]
  842.          @ can not be set "onclick" or "drag xy"
  843.         */
  844.             for( i = 0;i < 8; i++ ){
  845.                 switch(i){
  846.                     case 0: double_data[0] = get_real(infile,0);break; /* x1-values  -> x-pixels*/
  847.                     case 1: double_data[1] = get_real(infile,0);break; /* y1-values  -> y-pixels*/
  848.                     case 2: double_data[2] = get_real(infile,0);break; /* x2-values  -> x-pixels*/
  849.                     case 3: double_data[3] = get_real(infile,0);break; /* y2-values  -> y-pixels*/
  850.                     case 4: double_data[4] = xmin + get_real(infile,0);break; /* xv -> x-pixels */
  851.                     case 5: double_data[5] = ymax + get_real(infile,0);break; /* yv -> y-pixels */
  852.                     case 6: int_data[0] = (int) (get_real(infile,0));break; /* n  */
  853.                     case 7: stroke_color=get_color(infile,1);/* name or hex color */
  854.                     decimals = find_number_of_digits(precision);
  855.                     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);
  856.                     click_cnt++;reset();
  857.                     break;
  858.                     default: break;
  859.                 }
  860.             }
  861.             break;
  862.         case TRIANGLE:
  863.         /*
  864.          @triangle x1,y1,x2,y2,x3,y3,color
  865.          @may be set draggable / onclic
  866.         */
  867.             for(i=0;i<7;i++){
  868.                 switch(i){
  869.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  870.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  871.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  872.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  873.                     case 4: double_data[4] = get_real(infile,0);break; /* x */
  874.                     case 5: double_data[5] = get_real(infile,0);break; /* y */
  875.                     case 6: stroke_color = get_color(infile,1);/* name or hex color */
  876.                         decimals = find_number_of_digits(precision);
  877.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,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);
  878.                         click_cnt++;reset();
  879.                         break;
  880.                     default: break;
  881.                 }
  882.             }
  883.             break;
  884.         case LATTICE:
  885.         /*
  886.          @lattice x0,y0,xv1,yv1,xv2,yv2,n1,n2,color
  887.          @can not be set "onclick" or "drag xy"
  888.         */
  889.             if( js_function[DRAW_LATTICE] != 1 ){ js_function[DRAW_LATTICE] = 1;}
  890.             for( i = 0; i<9; i++){
  891.                 switch(i){
  892.                     case 0: int_data[0] = x2px(get_real(infile,0));break; /* x0-values  -> x-pixels*/
  893.                     case 1: int_data[1] = y2px(get_real(infile,0));break; /* y0-values  -> y-pixels*/
  894.                     case 2: int_data[2] = (int) (get_real(infile,0));break; /* x1-values  -> x-pixels*/
  895.                     case 3: int_data[3] = (int) -1*(get_real(infile,0));break; /* y1-values  -> y-pixels*/
  896.                     case 4: int_data[4] = (int) (get_real(infile,0));break; /* x2-values  -> x-pixels*/
  897.                     case 5: int_data[5] = (int) -1*(get_real(infile,0));break; /* y2-values  -> y-pixels*/
  898.                     case 6: int_data[6] = (int) (get_real(infile,0));break; /* n1-values */
  899.                     case 7: int_data[7] = (int) (get_real(infile,0));break; /* n2-values */
  900.                     case 8: stroke_color=get_color(infile,1);
  901.                         decimals = find_number_of_digits(precision);
  902.                         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);
  903.                         check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  904.                         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);
  905.                         add_to_buffer(tmp_buffer);
  906.                     break;
  907.                     default:break;
  908.                 }
  909.             }
  910.             reset();
  911.             break;
  912.         case SNAPTOGRID:
  913.         /*
  914.          @ snaptogrid
  915.          @ keyword (no arguments rewquired) needs to be defined before command 'userdraw' and after command 'grid'
  916.          @ in case of userdraw the drawn points will snap to xmajor / ymajor grid
  917.          @ 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 />
  918.         */
  919.         fprintf(js_include_file,"\nx_use_snap_to_grid = 1;y_use_snap_to_grid = 1;");
  920.         break;
  921.         case XSNAPTOGRID:
  922.         /*
  923.          @ xsnaptogrid
  924.          @ keyword (no arguments rewquired) needs to be defined before command 'userdraw' and after command 'grid'
  925.          @ in case of userdraw the drawn points will snap to xmajor grid
  926.          @ 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 />
  927.         */
  928.         fprintf(js_include_file,"\nx_use_snap_to_grid = 1;y_use_snap_to_grid = 0;");
  929.         break;
  930.         case YSNAPTOGRID:
  931.         /*
  932.          @ ysnaptogrid
  933.          @ keyword (no arguments rewquired) needs to be defined before command 'userdraw' and after command 'grid'
  934.          @ in case of userdraw the drawn points will snap to ymajor grid
  935.          @ 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 />
  936.         */
  937.         fprintf(js_include_file,"\nx_use_snap_to_grid = 0;y_use_snap_to_grid = 1;");
  938.         break;
  939.         case USERINPUT:
  940.         /*
  941.          @ userinput function | textarea | inputfield
  942.          @ alternative command + argment to keywords "userinput_function","userinput_textarea" and "userinput_xy"
  943.          @ textarea and inputfield are only usable in combination with some 'userdraw draw_ type'
  944.          @ function may be used any time (e.g. without userdraw)
  945.         */
  946.             temp = get_string_argument(infile,1);
  947.             if(strstr(temp,"function") != 0  || strstr(temp,"curve") != 0  || strstr(temp,"plot") != 0 ){
  948.              if( js_function[DRAW_JSFUNCTION] != 1 ){
  949.               js_function[DRAW_JSFUNCTION] = 1;
  950.               if(reply_format == 0){reply_format = 24;}/* read canvas_input values */
  951.               add_input_jsfunction(js_include_file,canvas_root_id,1,input_style,input_cnt,stroke_color,stroke_opacity,line_width,use_dashed,dashtype[0],dashtype[1]);
  952.               input_cnt++;
  953.              }
  954.              if( use_js_math == FALSE){/* add this stuff only once...*/
  955.               add_to_js_math(js_include_file);
  956.               use_js_math = TRUE;
  957.              }
  958.              if( use_js_plot == FALSE){
  959.               use_js_plot = TRUE;
  960.               add_jsplot(js_include_file,canvas_root_id); /* this plots the function on JSPLOT_CANVAS */
  961.              }
  962.             }
  963.             else
  964.             {
  965.              if(strstr(temp,"inputfield") != 0 ){
  966.               if( use_input_xy != 0 ){canvas_error("userinput_xy can not be combined with usertextarea_xy command");}
  967.               if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  968.               use_input_xy = 1;
  969.              }
  970.              else
  971.              {
  972.               if(strstr(temp,"textarea") != 0 ){
  973.                if( use_input_xy != 0 ){canvas_error("usertextarea_xy can not be combined with userinput_xy command");}
  974.                if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  975.                use_input_xy = 2;
  976.               }
  977.               else
  978.               {
  979.                 canvas_error("userinput argument may be \"function,inputfield,textarea\"");
  980.               }
  981.              }
  982.             }
  983.             break;
  984.         case USERTEXTAREA_XY:
  985.         /*
  986.         @ usertextarea_xy
  987.         @ keyword
  988.         @ to be used in combination with command "userdraw object_type,color" wherein object_type is only segment / polyline for the time being...
  989.         @ if set two textareas are added to the document<br />(one for x-values , one for y-values)
  990.         @ the student may use this as correction for (x:y) on a drawing (or to draw without mouse, using just the coordinates)
  991.         @ user drawings will not zoom on zooming (or pan on panning)
  992.         */
  993.             if( use_input_xy != 0 ){canvas_error("usertextarea_xy can not be combined with userinput_xy command");}
  994.             if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  995.             use_input_xy = 2;
  996.             break;
  997.         case USERINPUT_XY:
  998.         /*
  999.         @ userinput_xy
  1000.         @ keyword
  1001.         @ to be used in combination with command "userdraw object_type,color"
  1002.         @ 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)
  1003.         @ the student may use this as correction for (x:y) on a drawing (or to draw without mouse, using just the coordinates)
  1004.         @ 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.
  1005.         @ can not be combined with command "intooltip tiptext" <br />note: the 'tooltip div element' is used for placing inputfields
  1006.         @ user drawings will not zoom on zooming (or pan on panning)
  1007.         */
  1008.             /* add simple eval check to avoid code injection with unprotected eval(string) */
  1009.             if( use_input_xy != 0 ){canvas_error("userinput_xy can not be combined with usertextarea_xy command");}
  1010.             if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  1011.             use_input_xy = 1;
  1012.             break;
  1013.         case USERINPUT_FUNCTION:
  1014.         /*
  1015.         @ userinput_function
  1016.         @ keyword
  1017.         @ if set , a inputfield will be added to the page
  1018.         @ the userinput value will be plotted in the canvas
  1019.         @ this value may be read with 'read_canvas()'. <br />for do it yourself js-scripters : If this is the first inputfield in the script, it's id is canvas_input0
  1020.         @ use before this command 'userinput_function',<br />commands like 'inputstyle some_css' , 'xlabel some_description' , 'opacity int,int' , 'linewidth int' , 'dashed' and 'dashtype int,int' to modify
  1021.         @ incompatible with command 'intooltip link_text_or_image' : it uses the tooltip div for adding the inputfield
  1022.         */
  1023.             if( js_function[DRAW_JSFUNCTION] != 1 ){
  1024.              js_function[DRAW_JSFUNCTION] = 1;
  1025.              if(reply_format == 0){reply_format = 24;}/* read canvas_input values */
  1026.              add_input_jsfunction(js_include_file,canvas_root_id,1,input_style,input_cnt,stroke_color,stroke_opacity,line_width,use_dashed,dashtype[0],dashtype[1]);
  1027.              input_cnt++;
  1028.             }
  1029.             if( use_js_math == FALSE){/* add this stuff only once...*/
  1030.              add_to_js_math(js_include_file);
  1031.              use_js_math = TRUE;
  1032.             }
  1033.             if( use_js_plot == FALSE){
  1034.              use_js_plot = TRUE;
  1035.              add_jsplot(js_include_file,canvas_root_id); /* this plots the function on JSPLOT_CANVAS */
  1036.             }
  1037.             break;
  1038.         case USERDRAW:
  1039.         /*
  1040.         @ userdraw object_type,color
  1041.         @ 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><li>input<br/>place a single inputfield on 'canvas'<br />use commands 'inputstyle' for css styling: use command 'linewidth' for adjusting the input field size (default 1)</li><li>inputs<br/>place multiple inputfield : placing inputfields on top of each other is not possible</li></ul>
  1042.         @ 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)
  1043.         @ 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
  1044.         @ note: object_type polygone: Will be finished (the object is closed) when clicked on the first point of the polygone again.
  1045.         @ 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)
  1046.         @ use command "filled", "opacity int,int"  and "fillcolor color" to trigger coloured filling of fillable objects
  1047.         @ use command "dashed" and/or "dashtype int,int" to trigger dashing
  1048.         @ use command "replyformat int" to control / adjust output formatting of javascript function read_canvas();
  1049.         @ may be combined with onclick or drag xy  of other components of flyscript objects (although not very usefull...)
  1050.         @ may be combined with keyword 'userinput_xy' or
  1051.         @ 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.!
  1052.         */
  1053.             if( use_userdraw == TRUE ){ /* only one object type may be drawn*/
  1054.                 canvas_error("Only one userdraw primitive may be used: read documentation !!");
  1055.             }
  1056.             reply_precision = precision;
  1057.             use_userdraw = TRUE;
  1058.             fprintf(js_include_file,"\n<!-- begin userdraw mouse events -->\nuserdraw_x = new Array();userdraw_y = new Array();userdraw_radius = new Array();var xy_cnt=0;var canvas_userdraw = create_canvas%d(%d,xsize,ysize);var context_userdraw = canvas_userdraw.getContext(\"2d\");var use_dashed = %d;if(use_dashed == 1){if( context_userdraw.setLineDash ){context_userdraw.setLineDash([%d,%d]);}else{if(context_userdraw.mozDash){context_userdraw.mozDash = [%d,%d];};};};if(wims_status != \"done\"){canvas_div.addEventListener(\"mousedown\",user_draw,false);canvas_div.addEventListener(\"mousemove\",user_drag,false);canvas_div.addEventListener(\"touchstart\",user_draw,false);canvas_div.addEventListener(\"touchmove\",user_drag,false);}\n<!-- end userdraw mouse events -->",canvas_root_id,DRAW_CANVAS,use_dashed,dashtype[0],dashtype[1],dashtype[0],dashtype[1]);
  1059.             draw_type = get_string_argument(infile,0);
  1060.             stroke_color = get_color(infile,1);
  1061.             if( strcmp(draw_type,"point") == 0 ){
  1062.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1063.                 if(reply_format == 0 ){reply_format = 8;}
  1064.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1065.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1066.                 if(use_input_xy == 1){
  1067.                     add_input_circle(js_include_file,1,1);
  1068.                     add_input_xy(js_include_file,canvas_root_id);
  1069.                 }
  1070.                 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);
  1071.             }
  1072.             else
  1073.             if( strcmp(draw_type,"points") == 0 ){
  1074.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1075.                 if(reply_format == 0 ){reply_format = 8;}
  1076.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1077.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1078.                 if(use_input_xy == 1){
  1079.                     add_input_circle(js_include_file,1,2);
  1080.                     add_input_xy(js_include_file,canvas_root_id);
  1081.                 }
  1082.                 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);
  1083.             }
  1084.             else
  1085.             if( strcmp(draw_type,"segment") == 0 ){
  1086.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1087.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  1088.                 if(reply_format == 0){reply_format = 11;}
  1089.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1090.                 if(use_input_xy == 1){
  1091.                     add_input_segment(js_include_file,1);
  1092.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1093.                 }
  1094.                 add_js_segments(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1095.             }
  1096.             else
  1097.             if( strcmp(draw_type,"polyline") == 0 ){
  1098.                 if( js_function[DRAW_POLYLINE] != 1 ){ js_function[DRAW_POLYLINE] = 1;}
  1099.                 if(reply_format == 0){reply_format = 23;}
  1100.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1101.                 if( use_input_xy == 1 ){
  1102.                     add_input_polyline(js_include_file);
  1103.                     add_input_xy(js_include_file,canvas_root_id);
  1104.                 }
  1105.                 add_js_polyline(js_include_file,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1106.             }
  1107.             else
  1108.             if( strcmp(draw_type,"segments") == 0 ){
  1109.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1110.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  1111.                 if(reply_format == 0){reply_format = 11;}
  1112.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1113.                 if(use_input_xy == 1){
  1114.                     add_input_segment(js_include_file,2);
  1115.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1116.                 }
  1117.                 add_js_segments(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1118.             }
  1119.             else
  1120.             if( strcmp(draw_type,"circle") == 0 ){
  1121.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1122.                 if(reply_format == 0){reply_format = 10;}
  1123.                 /* 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n in x/y-range */
  1124.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1125.                 if(use_input_xy == 1){
  1126.                     add_input_circle(js_include_file,2,1);
  1127.                     add_input_xyr(js_include_file,canvas_root_id);
  1128.                 }
  1129.                 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]);
  1130.             }
  1131.             else
  1132.             if( strcmp(draw_type,"circles") == 0 ){
  1133.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1134.                 if(reply_format == 0){reply_format = 10;}
  1135.                 /* 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n in x/y-range */
  1136.                 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]);
  1137.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1138.                 if(use_input_xy == 1){
  1139.                     add_input_circle(js_include_file,2,2);
  1140.                     add_input_xyr(js_include_file,canvas_root_id);
  1141.                 }
  1142.             }
  1143.             else
  1144.             if(strcmp(draw_type,"crosshair") == 0 ){
  1145.                 if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1146.                 if(reply_format == 0){reply_format = 8;}
  1147.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1148.                 add_js_crosshairs(js_include_file,1,draw_type,line_width,crosshair_size ,stroke_color,stroke_opacity);
  1149.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1150.                 if(use_input_xy == 1){
  1151.                     add_input_crosshair(js_include_file,1);
  1152.                     add_input_xy(js_include_file,canvas_root_id);
  1153.                 }
  1154.             }
  1155.             else
  1156.             if(strcmp(draw_type,"crosshairs") == 0 ){
  1157.                 if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1158.                 if(reply_format == 0){reply_format = 8;}
  1159.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1160.                 add_js_crosshairs(js_include_file,2,draw_type,line_width,crosshair_size ,stroke_color,stroke_opacity);
  1161.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1162.                 if(use_input_xy == 1){
  1163.                     add_input_crosshair(js_include_file,2);
  1164.                     add_input_xy(js_include_file,canvas_root_id);
  1165.                 }
  1166.             }
  1167.             else
  1168.             if(strcmp(draw_type,"freehandline") == 0 ){
  1169.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1170.                 if(reply_format == 0){reply_format = 6;}
  1171.                 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]);
  1172.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1173.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1174.             }
  1175.             else
  1176.             if(strcmp(draw_type,"freehandlines") == 0 ){
  1177.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1178.                 if(reply_format == 0){reply_format = 6;}
  1179.                 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]);
  1180.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1181.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1182.             }
  1183.             else
  1184.             if(strcmp(draw_type,"path") == 0 ){
  1185.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1186.                 if(reply_format == 0){reply_format = 6;}
  1187.                 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]);
  1188.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1189.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1190.             }
  1191.             else
  1192.             if(strcmp(draw_type,"paths") == 0 ){
  1193.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1194.                 if(reply_format == 0){reply_format = 6;}
  1195.                 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]);
  1196.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1197.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1198.             }
  1199.             else
  1200.             if(strcmp(draw_type,"arrows") == 0 ){
  1201.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1202.                 if(reply_format == 0){reply_format = 11;}
  1203.                 add_js_arrows(js_include_file,2,draw_type,line_width,1,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1204.                 if(use_input_xy == 1){
  1205.                     add_input_arrow(js_include_file,2);
  1206.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1207.                 }
  1208.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1209.             }
  1210.             else
  1211.             if(strcmp(draw_type,"arrows2") == 0 ){
  1212.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1213.                 if(reply_format == 0){reply_format = 11;}
  1214.                 add_js_arrows(js_include_file,2,draw_type,line_width,2,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1215.                 if(use_input_xy == 1){
  1216.                     add_input_arrow(js_include_file,1);
  1217.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1218.                 }
  1219.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1220.             }
  1221.             else
  1222.             if(strcmp(draw_type,"arrow2") == 0 ){
  1223.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1224.                 if(reply_format == 0){reply_format = 11;}
  1225.                 add_js_arrows(js_include_file,1,draw_type,line_width,2,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1226.                 if(use_input_xy == 1){
  1227.                     add_input_arrow(js_include_file,1);
  1228.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1229.                 }
  1230.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1231.             }
  1232.             else
  1233.             if(strcmp(draw_type,"arrow") == 0 ){
  1234.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1235.                 if(reply_format == 0){reply_format = 11;}
  1236.                 add_js_arrows(js_include_file,1,draw_type,line_width,1,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1237.                 if(use_input_xy == 1){
  1238.                     add_input_arrow(js_include_file,1);
  1239.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1240.                 }
  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,"polygon") == 0){
  1245.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1246.                 if(reply_format == 0){reply_format = 2;}
  1247.                 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]);
  1248.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1249.                 if(use_input_xy == 2){
  1250.                   add_textarea_polygon(js_include_file);
  1251.                   add_textarea_xy(js_include_file,canvas_root_id);
  1252.                 }
  1253.             }
  1254.             else
  1255.             if(strncmp(draw_type,"poly",4) == 0){
  1256.                 if(strlen(draw_type) < 5){canvas_error("use command \"userdraw poly[3-9],color\" eg userdraw poly6,blue");}
  1257.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1258.                 if(reply_format == 0){reply_format = 2;}
  1259.                 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]);
  1260.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1261.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1262.             }
  1263.             else
  1264.             if(strcmp(draw_type,"triangle") == 0){
  1265.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1266.                 if(reply_format == 0){reply_format = 2;}
  1267.                 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]);
  1268.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1269.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1270.             }
  1271.             else
  1272.             if( strcmp(draw_type,"hline") == 0 ){
  1273.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1274.                 if(reply_format == 0){reply_format = 11;}
  1275.                 add_js_hlines(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1276.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1277.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1278.             }
  1279.             else
  1280.             if( strcmp(draw_type,"hlines") == 0 ){
  1281.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1282.                 if(reply_format == 0){reply_format = 11;}
  1283.                 add_js_hlines(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1284.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1285.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1286.             }
  1287.             else
  1288.             if( strcmp(draw_type,"vline") == 0 ){
  1289.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1290.                 if(reply_format == 0){reply_format = 11;}
  1291.                 add_js_hlines(js_include_file,3,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1292.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1293.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1294.             }
  1295.             else
  1296.             if( strcmp(draw_type,"vlines") == 0 ){
  1297.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1298.                 if(reply_format == 0){reply_format = 11;}
  1299.                 add_js_hlines(js_include_file,4,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1300.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1301.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1302.             }
  1303.             else
  1304.             if( strcmp(draw_type,"line") == 0 ){
  1305.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1306.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1307.                 if(reply_format == 0){reply_format = 11;}
  1308.                 add_js_lines(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1309.                 if( use_input_xy == 1 ){
  1310.                     add_input_line(js_include_file,1);
  1311.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1312.                 }
  1313.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1314.             }
  1315.             else
  1316.             if( strcmp(draw_type,"lines") == 0 ){
  1317.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1318.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1319.                 if(reply_format == 0){reply_format = 11;}
  1320.                 add_js_lines(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1321.                 if( use_input_xy == 1 ){
  1322.                     add_input_line(js_include_file,2);
  1323.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1324.                 }
  1325.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1326.             }
  1327.             else
  1328.             if( strcmp(draw_type,"rects") == 0){
  1329.                 if( js_function[DRAW_RECTS] != 1 ){ js_function[DRAW_RECTS] = 1;}
  1330.                 if(reply_format == 0){reply_format = 2;}
  1331.                 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]);
  1332.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1333.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1334.             }
  1335.             else
  1336.             if( strcmp(draw_type,"roundrects") == 0){
  1337.                 if( js_function[DRAW_ROUNDRECTS] != 1 ){ js_function[DRAW_ROUNDRECTS] = 1;}
  1338.                 if(reply_format == 0){reply_format = 2;}
  1339.                 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]);
  1340.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1341.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1342.             }
  1343.             else
  1344.             if( strcmp(draw_type,"rect") == 0){
  1345.                 if( js_function[DRAW_RECTS] != 1 ){ js_function[DRAW_RECTS] = 1;}
  1346.                 if(reply_format == 0){reply_format = 2;}
  1347.                 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]);
  1348.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1349.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1350.             }
  1351.             else
  1352.             if( strcmp(draw_type,"roundrect") == 0){
  1353.                 if( js_function[DRAW_ROUNDRECTS] != 1 ){ js_function[DRAW_ROUNDRECTS] = 1;}
  1354.                 if(reply_format == 0){reply_format = 2;}
  1355.                 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]);
  1356.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1357.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1358.             }
  1359.             else
  1360.             if( strcmp(draw_type,"arcs") == 0){
  1361.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  1362.                 if(reply_format == 0){reply_format = 25;}
  1363.                 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]);
  1364.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1365.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1366.             }
  1367.             else
  1368.             if( strcmp(draw_type,"arc") == 0){
  1369.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  1370.                 if(reply_format == 0){reply_format = 25;}
  1371.                 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]);
  1372.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1373.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1374.             }
  1375.             else
  1376.             if( strcmp(draw_type,"text") == 0){
  1377.                 if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}
  1378.                 if(reply_format == 0){reply_format = 17;}
  1379.                 add_js_text(js_include_file,canvas_root_id,font_size,font_family,font_color,stroke_opacity);
  1380.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1381.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1382.             }
  1383.             else
  1384.             if( strcmp(draw_type,"inputs") == 0){
  1385.                 if( js_function[DRAW_INPUTS] != 1 ){ js_function[DRAW_INPUTS] = 1;}
  1386.                 if(reply_format == 0){reply_format = 27;}
  1387.                 add_js_inputs(js_include_file,canvas_root_id,2,input_cnt,input_style,line_width);
  1388.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1389.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1390.             }
  1391.             else
  1392.             if( strcmp(draw_type,"input") == 0){
  1393.                 if( js_function[DRAW_INPUTS] != 1 ){ js_function[DRAW_INPUTS] = 1;}
  1394.                 if(reply_format == 0){reply_format = 27;}
  1395.                 add_js_inputs(js_include_file,canvas_root_id,1,input_cnt,input_style,line_width);
  1396.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1397.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1398.             }
  1399.             else
  1400.             {
  1401.                 canvas_error("unknown drawtype or typo? ");
  1402.             }
  1403.             reset();
  1404.         break;
  1405.         case PLOTSTEPS:
  1406.             /*
  1407.              @ plotsteps a_number
  1408.              @ default 150
  1409.              @ use with care !
  1410.             */
  1411.             plot_steps = (int) (get_real(infile,1));
  1412.             break;
  1413.         case FONTSIZE:
  1414.         /*
  1415.          @fontsize font_size
  1416.          @default value 12
  1417.         */
  1418.             font_size = (int) (get_real(infile,1));
  1419.             break;
  1420.         case FONTCOLOR:
  1421.         /*
  1422.          @fontcolor color
  1423.          @color: hexcolor or colorname
  1424.          @default: black
  1425.          @example usage: x/y-axis text
  1426.         */
  1427.             font_color = get_color(infile,1);
  1428.             break;
  1429.         case ANIMATE:
  1430.         /*
  1431.          @animate type
  1432.          @REMOVED : this should be done with a slider
  1433.          @type may be "point" (nothing else , yet...)
  1434.          @the point is a filled rectangle ; adjust colour with command 'fillcolor colorname/hexnumber'
  1435.          @will animate a point on the next plot/curve command
  1436.          @the curve will not be draw
  1437.          @moves repeatedly from xmin to xmax
  1438.         */
  1439.             if( strstr(get_string(infile,1),"point") != 0 ){animation_type = 15;}else{canvas_error("the only animation type (for now) is \"point\"...");}
  1440.             break;
  1441.         case LEVELCURVE:
  1442.         /*
  1443.         @levelcurve color,expression in x/y,l1,l2,...
  1444.         @draws very primitive level curves for expression, with levels l1,l2,l3,...,l_n
  1445.         @the quality is <b>not to be compared</b> with the Flydraw levelcurve. <br />(choose flydraw if you want quality...)
  1446.         @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
  1447.         @note : the arrays for holding the javascript data are limited in size
  1448.         @note : reduce image size if javascript data arrays get overloaded<br />(command 'plotsteps int' will not control the data size of the plot...)
  1449.         */
  1450.             fill_color = get_color(infile,0);
  1451.             char *fun1 = get_string_argument(infile,0);
  1452.             if( strlen(fun1) == 0 ){canvas_error("function is NOT OK !");}
  1453.             i = 0;
  1454.             done = FALSE;
  1455.             while( !done ){
  1456.              double_data[i] = get_real(infile,1);
  1457.              i++;
  1458.             }
  1459.             for(c = 0 ; c < i; c++){
  1460.              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);
  1461.              click_cnt++;
  1462.             }
  1463.             reset();
  1464.             break;
  1465.         case TRACE_JSCURVE:
  1466.         /*
  1467.          @trace_jscurve some_math_function
  1468.          @will use a crosshair to trace the jsmath curve
  1469.          @two inputfields will display the current x/y-values (numerical evaluation by javascript)
  1470.          @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
  1471.          @use linewidth,strokecolor,crosshairsize to adjust the corsshair.
  1472.          @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...
  1473.         */
  1474.             if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1475.             if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1476.             if( use_js_math == FALSE){
  1477.                 add_to_js_math(js_include_file);
  1478.                 use_js_math = TRUE;
  1479.             }
  1480.             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);
  1481.             break;
  1482.         case JSMATH:
  1483.         /*
  1484.             @jsmath some_math_function
  1485.             @will calculate an y-value from a userinput x-value and draws a crosshair on these coordinates.
  1486.             @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
  1487.             @example: jsmath sin(x^2)
  1488.             @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...
  1489.         */
  1490.             if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1491.             if( use_js_math == FALSE){
  1492.                 add_to_js_math(js_include_file);
  1493.                 use_js_math = TRUE;
  1494.             }
  1495.             add_calc_y(js_include_file,canvas_root_id,get_string(infile,1));
  1496.             break;
  1497.         case JSCURVE:
  1498.         /*
  1499.          @jscurve color,formula(x)
  1500.          @your function will be plotted by the javascript engine of the client browser.
  1501.          @use only basic math in your curve:<br /> sqrt,^,asin,acos,atan,log,pi,abs,sin,cos,tan,e
  1502.          @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...
  1503.          @Attention : last "precision" command in the canvasdraw script determines the calculation precision of the javascript curve plot !
  1504.          @no validity check is done by wims.
  1505.          @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
  1506.          @use command 'trace_jscurve formula(x)` for tracing
  1507.          @use commmand 'jsmath  formula(x)` for calculating and displaying indiviual points on the curve
  1508.          @can not be set draggable / onclick (yet)
  1509.          @commands plotjump / plotstep are not active for 'jscurve'
  1510.         */
  1511.             stroke_color = get_color(infile,0);
  1512.             if( use_js_math == FALSE){/* add this stuff only once...*/
  1513.                 add_to_js_math(js_include_file);
  1514.                 use_js_math = TRUE;
  1515.             }
  1516.             if( use_js_plot == FALSE){
  1517.                 use_js_plot = TRUE;
  1518.                 add_jsplot(js_include_file,canvas_root_id); /* this plots the function on JSPLOT_CANVAS */
  1519.             }
  1520.             temp = get_string_argument(infile,1);
  1521.             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]);
  1522.             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1523.             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]);
  1524.             add_to_buffer(tmp_buffer);
  1525.             use_js_plot++; /* we need to create multiple canvasses, so we may zoom and pan ?? */
  1526.  
  1527.         break;
  1528.         case CURVE:
  1529.         /*
  1530.          @curve color,formula(x)
  1531.          @plot color,formula(x)
  1532.          @use command trange before command curve / plot  (trange -pi,pi)<br />curve color,formula1(t),formula2(t)
  1533.          @use command "precision" to increase the number of digits of the plotted points
  1534.          @use command "plotsteps" to increase / decrease the amount of plotted points (default 150)
  1535.          @may be set draggable / onclick
  1536.         */
  1537.             if( use_parametric == TRUE ){ /* parametric color,fun1(t),fun2(t)*/
  1538.                 use_parametric = FALSE;
  1539.                 stroke_color = get_color(infile,0);
  1540.                 char *fun1 = get_string_argument(infile,0);
  1541.                 char *fun2 = get_string_argument(infile,1);
  1542.                 if( strlen(fun1) == 0 || strlen(fun2) == 0 ){canvas_error("parametric functions are NOT OK !");}
  1543.                 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);
  1544.                 click_cnt++;
  1545.             }
  1546.             else
  1547.             {
  1548.                 stroke_color = get_color(infile,0);
  1549.                 char *fun1 = get_string_argument(infile,1);
  1550.                 if( strlen(fun1) == 0 ){canvas_error("function is NOT OK !");}
  1551.                 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);
  1552.                 click_cnt++;
  1553.             }
  1554.             animation_type = 9;/* reset to curve plotting without animation */
  1555.             reset();
  1556.             break;
  1557.         case FLY_TEXT:
  1558.         /*
  1559.         @ text fontcolor,x,y,font,text_string
  1560.         @ font may be described by keywords : giant,huge,normal,small,tiny
  1561.         @ use command 'fontsize' to increase base fontsize for these keywords
  1562.         @ may be set "onclick" or "drag xy"
  1563.         @ backwards compatible with flydraw
  1564.         @ unicode supported: text red,0,0,huge,\\u2232
  1565.         @ use command 'string' combined with 'fontfamily' for a more fine grained control over html5 canvas text element
  1566.         @ 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.
  1567.         */
  1568.             for(i = 0; i < 5 ;i++){
  1569.                 switch(i){
  1570.                     case 0: stroke_color = get_color(infile,0);break;/* font_color == stroke_color name or hex color */
  1571.                     case 1: double_data[0] = get_real(infile,0);break; /* x */
  1572.                     case 2: double_data[1] = get_real(infile,0);break; /* y */
  1573.                     case 3: fly_font = get_string_argument(infile,0);
  1574.                             if(strcmp(fly_font,"giant") == 0){
  1575.                                 font_size = (int)(font_size + 24);
  1576.                             }
  1577.                             else
  1578.                             {
  1579.                                 if(strcmp(fly_font,"huge") == 0){
  1580.                                     font_size = (int)(font_size + 14);
  1581.                                 }
  1582.                                 else
  1583.                                 {
  1584.                                     if(strcmp(fly_font,"large") == 0){
  1585.                                         font_size = (int)(font_size + 6);
  1586.                                         }
  1587.                                         else
  1588.                                         {
  1589.                                             if(strcmp(fly_font,"small") == 0){
  1590.                                                 font_size = (int)(font_size - 4);
  1591.                                                 if(font_size<0){font_size = 8;}
  1592.                                         }
  1593.                                     }
  1594.                                 }
  1595.                             }
  1596.                             break; /* font_size ! */
  1597.                     case 4:
  1598.                         temp = get_string_argument(infile,1);
  1599.                         decimals = find_number_of_digits(precision);
  1600.                         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);
  1601.                         click_cnt++;reset();break;
  1602.                     default:break;
  1603.                 }
  1604.             }
  1605.             break;
  1606.         case FLY_TEXTUP:
  1607.         /*
  1608.          @ textup fontcolor,x,y,font,text_string
  1609.          @ can <b>not</b> be set "onclick" or "drag xy" (because of translaton matrix...mouse incompatible)
  1610.          @ font may be described by keywords : giant,huge,normal,small,tiny
  1611.          @ use command 'fontsize' to increase base fontsize for the keywords
  1612.          @ backwards compatible with flydraw
  1613.          @ unicode supported: textup red,0,0,huge,\\u2232
  1614.          @ use command 'stringup' and 'fontfamily' for a more fine grained control over html5 canvas text element
  1615.          @ 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.
  1616.         */
  1617.             if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}
  1618.             for(i = 0; i<5 ;i++){
  1619.                 switch(i){
  1620.                     case 0: font_color = get_color(infile,0);break;/* name or hex color */
  1621.                     case 1: int_data[0] = x2px(get_real(infile,0));break; /* x */
  1622.                     case 2: int_data[1] = y2px(get_real(infile,0));break; /* y */
  1623.                     case 3: fly_font = get_string_argument(infile,0);
  1624.                             if(strcmp(fly_font,"giant") == 0){
  1625.                                 font_size = (int)(font_size + 24);
  1626.                             }
  1627.                             else
  1628.                             {
  1629.                                 if(strcmp(fly_font,"huge") == 0){
  1630.                                     font_size = (int)(font_size + 14);
  1631.                                 }
  1632.                                 else
  1633.                                 {
  1634.                                     if(strcmp(fly_font,"large") == 0){
  1635.                                         font_size = (int)(font_size + 6);
  1636.                                         }
  1637.                                         else
  1638.                                         {
  1639.                                             if(strcmp(fly_font,"small") == 0){
  1640.                                                 font_size = (int)(font_size - 4);
  1641.                                                 if(font_size<0){font_size = 8;}
  1642.                                         }
  1643.                                     }
  1644.                                 }
  1645.                             }
  1646.                             break; /* font_size ! */
  1647.                     case 4:
  1648.                     decimals = find_number_of_digits(precision);
  1649.                     temp = get_string_argument(infile,1);
  1650.                     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);
  1651.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1652.                     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);
  1653.                     add_to_buffer(tmp_buffer);
  1654.                     break;
  1655.                     default:break;
  1656.                 }
  1657.             }
  1658.             reset();
  1659.             break;
  1660.         case FONTFAMILY:
  1661.         /*
  1662.          @ fontfamily font_description
  1663.          @ set the font family; for browsers that support it
  1664.          @ font_description: Ariel ,Courier, Helvetica etc
  1665.          @ 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
  1666.          @ use correct syntax : 'font style' 'font size'px 'fontfamily'
  1667.         */
  1668.             font_family = get_string(infile,1);
  1669.             break;
  1670.         case STRINGUP:
  1671.         /*
  1672.          @ stringup color,x,y,rotation_degrees,the text string
  1673.          @ can <b>not</b> be set "onclick" or "drag xy" (because of translaton matrix...mouse incompatible)
  1674.          @ unicode supported: stringup red,0,0,45,\\u2232
  1675.          @ use a command like 'fontfamily bold 34px Courier' <br />to set fonts on browser that support font change
  1676.  
  1677.         */
  1678.             if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}   /* can not be added to shape library : rotate / mouse issues */
  1679.             for(i=0;i<6;i++){
  1680.                 switch(i){
  1681.                     case 0: font_color = get_color(infile,0);break;/* name or hex color */
  1682.                     case 1: int_data[0] = x2px(get_real(infile,0));break; /* x */
  1683.                     case 2: int_data[1] = y2px(get_real(infile,0));break; /* y */
  1684.                     case 3: double_data[0] = get_real(infile,0);break;/* rotation */
  1685.                     case 4: decimals = find_number_of_digits(precision);
  1686.                             temp = get_string_argument(infile,1);
  1687.                             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);
  1688.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1689.                             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);
  1690.                             add_to_buffer(tmp_buffer);
  1691.                             break;
  1692.                     default:break;
  1693.                 }
  1694.             }
  1695.             reset();
  1696.             break;
  1697.         case STRING:
  1698.         /*
  1699.          @ string color,x,y,the text string
  1700.          @ may be set "onclick" or "drag xy"
  1701.          @ unicode supported: string red,0,0,\\u2232
  1702.          @ use a command like 'fontfamily italic 24px Ariel' <br />to set fonts on browser that support font change
  1703.         */
  1704.             for(i=0;i<5;i++){
  1705.                 switch(i){
  1706.                     case 0: stroke_color = get_color(infile,0);break;/* name or hex color */
  1707.                     case 1: double_data[0] = get_real(infile,0);break; /* x in xrange*/
  1708.                     case 2: double_data[1] = get_real(infile,0);break; /* y in yrange*/
  1709.                     case 3: decimals = find_number_of_digits(precision);
  1710.                         temp = get_string_argument(infile,1);
  1711.                         decimals = find_number_of_digits(precision);
  1712.                         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);
  1713.                         click_cnt++;reset();break;
  1714.                     default:break;
  1715.                 }
  1716.             }
  1717.             break;
  1718.         case CENTERSTRING:
  1719.         /*
  1720.          @ centerstring color,y-value,the text string
  1721.          @ title color,y-value,the text string
  1722.          @ draw a string centered on the canvas at y = y-value
  1723.          @ can not set "onclick" or "drag xy" (...)
  1724.          @ unicode supported: centerstring red,5,\\u2232
  1725.          @ use a command like 'fontfamily italic 24px Ariel' <br />to set fonts on browser that support font change
  1726.         */
  1727.             if( js_function[DRAW_CENTERSTRING] != 1 ){ js_function[DRAW_CENTERSTRING] = 1;}
  1728.             for(i=0;i<3;i++){
  1729.                 switch(i){
  1730.                     case 0: stroke_color = get_color(infile,0);break;/* name or hex color */
  1731.                     case 1: double_data[0] = get_real(infile,0);break; /* y in xrange*/
  1732.                     case 2: temp = get_string_argument(infile,1);
  1733.                             /* draw_text = function(canvas_type,y,font_family,stroke_color,stroke_opacity,text) */
  1734.                             decimals = find_number_of_digits(precision);
  1735.                             string_length = snprintf(NULL,0,
  1736.                             "draw_centerstring(%d,%.*f,\"%s\",\"%s\",%.2f,\"%s\");\n",canvas_root_id,decimals,double_data[0],font_family,stroke_color,stroke_opacity,temp);
  1737.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1738.                             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);
  1739.                             add_to_buffer(tmp_buffer);
  1740.                             break;
  1741.                     default:break;
  1742.                 }
  1743.             }
  1744.             break;
  1745.         case MATHML:
  1746.         /*
  1747.         @ mathml x1,y1,x2,y2,mathml_string
  1748.         @ mathml will be displayed in a rectangle left top (x1:y1) , right bottom (x2:y2)
  1749.         @ can be set onclick <br />(however dragging is not supported)<br />javascript:read_dragdrop(); will return click number of mathml-object
  1750.         @ 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();"
  1751.         @ 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....
  1752.  
  1753.         */
  1754.             if( js_function[DRAW_XML] != 1 ){ js_function[DRAW_XML] = 1;}
  1755.             for(i=0;i<5;i++){
  1756.                 switch(i){
  1757.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in x/y-range coord system -> pixel width */
  1758.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in x/y-range coord system  -> pixel height */
  1759.                     case 2: int_data[2]=x2px(get_real(infile,0)) - int_data[0];break; /* width in x/y-range coord system -> pixel width */
  1760.                     case 3: int_data[3]=y2px(get_real(infile,0)) - int_data[1];break; /* height in x/y-range coord system  -> pixel height */
  1761.                     case 4: decimals = find_number_of_digits(precision);
  1762.                             if(onclick == 1 ){ onclick = click_cnt;click_cnt++;}
  1763.                             temp = get_string(infile,1);
  1764.                             if( strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\"","'"); }
  1765.                             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);
  1766.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1767.                             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);
  1768.                             add_to_buffer(tmp_buffer);
  1769.                             /*
  1770.                              in case inputs are present , trigger adding the read_mathml()
  1771.                              if no other reply_format is defined
  1772.                              note: all other reply types will include a reading of elements with id='mathml'+p)
  1773.                              */
  1774.                             if(strstr(temp,"mathml0") != NULL){
  1775.                              if(reply_format == 0 ){reply_format = 16;} /* no other reply type is defined */
  1776.                             }
  1777.                             break;
  1778.                     default:break;
  1779.                 }
  1780.             }
  1781.             reset();
  1782.             break;
  1783.         case HTTP:
  1784.         /*
  1785.          @http x1,y1,x2,y2,http://some_adress.com
  1786.          @an active html-page will be displayed in an "iframe" rectangle left top (x1:y1) , right bottom (x2:y2)
  1787.          @do not use interactivity (or mouse) if the mouse needs to be active in the iframe
  1788.          @can not be 'set onclick' or 'drag xy'
  1789.         */
  1790.             if( js_function[DRAW_HTTP] != 1 ){ js_function[DRAW_HTTP] = 1;}
  1791.             for(i=0;i<5;i++){
  1792.                 switch(i){
  1793.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in x/y-range coord system -> pixel width */
  1794.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in x/y-range coord system  -> pixel height */
  1795.                     case 2: int_data[2]=x2px(get_real(infile,0)) - int_data[0];break; /* width in x/y-range coord system -> pixel width */
  1796.                     case 3: int_data[3]=y2px(get_real(infile,0)) - int_data[1];break; /* height in x/y-range coord system  -> pixel height */
  1797.                     case 4: decimals = find_number_of_digits(precision);
  1798.                             temp = get_string(infile,1);
  1799.                             if(strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\"","'");}
  1800.                             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);
  1801.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1802.                             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);
  1803.                             add_to_buffer(tmp_buffer);
  1804.                     break;
  1805.                 }
  1806.             }
  1807.             reset();
  1808.             break;
  1809.         case HTML:
  1810.         /*
  1811.          @ html x1,y1,x2,y2,html_string
  1812.          @ all tags are allowed
  1813.          @ can be set onclick <br />(dragging not supported)<br />javascript:read_dragdrop(); will return click number of mathml-object
  1814.          @ 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.
  1815.  
  1816.          note: uses the same code as 'mathml'
  1817.         */
  1818.             break;
  1819.         case X_AXIS_STRINGS:
  1820.         /*
  1821.          @ xaxis num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1822.          @ xaxistext num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1823.          @ use these x-axis values in stead of default xmin...xmax
  1824.          @ use command "fontcolor", "fontsize" , "fontfamily" to adjust font <br />defaults: black,12,Ariel
  1825.          @ if the 'x-axis words' are to big amd will overlap, a simple alternating offset will be applied
  1826.          @ 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
  1827.          @ 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
  1828.         */
  1829.             temp = get_string(infile,1);
  1830.             if( strstr(temp,":") != 0 ){ temp = str_replace(temp,":","\",\"");}
  1831.             if( strstr(temp,"pi") != 0 ){ temp = str_replace(temp,"pi","(3.1415927)");}/* we need to replace pi for javascript y-value*/
  1832.             fprintf(js_include_file,"x_strings = [\"%s\"];\n ",temp);
  1833.             use_axis_numbering = 1;
  1834.             break;
  1835.         case Y_AXIS_STRINGS:
  1836.         /*
  1837.          @ yaxis num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1838.          @ yaxistext num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1839.          @ use command "fontcolor", "fontsize" , "fontfamily" to adjust font <br />defaults: black,12,Ariel
  1840.          @ use these y-axis values in stead of default ymin...ymax
  1841.          @ 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
  1842.         */
  1843.             temp = get_string(infile,1);
  1844.             if( strstr(temp,":") != 0 ){ temp = str_replace(temp,":","\",\"");}
  1845.             if( strstr(temp,"pi") != 0 ){ temp = str_replace(temp,"pi","(3.1415927)");}/* we need to replace pi for javascript y-value*/
  1846.             fprintf(js_include_file,"y_strings = [\"%s\"];\n ",temp);
  1847.             use_axis_numbering = 1;
  1848.             break;
  1849.  
  1850.         case AXIS_NUMBERING:
  1851.         /*
  1852.             @ axisnumbering
  1853.             @ keyword, no arguments required
  1854.         */
  1855.             use_axis_numbering = 1;
  1856.             break;
  1857.         case AXIS:
  1858.         /*
  1859.             @ axis
  1860.             @ keyword, no arguments required
  1861.  
  1862.         */
  1863.             use_axis = TRUE;
  1864.             break;
  1865.         case KILLSLIDER:
  1866.         /*
  1867.          @ killslider
  1868.          @ keyword, no arguments required
  1869.          @ ends grouping of object under a preciously defined slider
  1870.         */
  1871.             slider = 0;
  1872.             break;
  1873.         case SLIDER:
  1874.         /*
  1875.         @ slider start_value,end_value,width px,height px,type,label
  1876.         @ type: xy,x,y,angle
  1877.         @ if a value display is desired, use<br />type:xy display,x display,y display,angle radian,angle degree
  1878.         @ is a unit for x / y value display is needed, use commands 'xunit' and / or 'yunit'
  1879.         @ use commmand 'slider' before draggable/clickable objects.
  1880.         @ 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'
  1881.         @ amount of sliders is not limited.
  1882.         @ javascript:read_dragdrop(); will return an array with 'object_number:slider_value'
  1883.         @ type=xy: will produce a 2D 'slider' [rectangle width x heigh px] in your web page
  1884.         @ every draggable object may have it's own slider (no limit in amount of sliders)
  1885.         @ label: some slider text
  1886.         @ use fillcolor for slider ball
  1887.         @ use strokecolor for slider bar
  1888.         @ use fontfamily / fontcolor to set used fonts
  1889.         @ use opacity (only fill opacity will be used) to set transparency
  1890.         @ the slider canvas will be added to the 'tooltip div' : so incompatible with command tooltip ; setlimits etc
  1891.         */
  1892.             for(i=0; i<6 ; i++){
  1893.                 switch(i){
  1894.                     case 0: double_data[0] = get_real(infile,0);break; /* start value */
  1895.                     case 1: double_data[1] = get_real(infile,0);break; /* end value */
  1896.                     case 2: int_data[0] = (int)(get_real(infile,0));break; /* width */
  1897.                     case 3: int_data[1] = (int)(get_real(infile,0));break; /* height */
  1898.                     case 4: temp = get_string_argument(infile,0); /* type : xy,x,y,angle */
  1899.                     /* xy display*/
  1900.                     if(strstr(temp,"xy")!= 0){
  1901.                      slider = 4;
  1902.                     }
  1903.                     else
  1904.                     {
  1905.                      if(strstr(temp,"x") != 0){
  1906.                       slider = 1;
  1907.                      }
  1908.                      else
  1909.                      {
  1910.                       if(strstr(temp,"y") != 0){
  1911.                        slider = 2;
  1912.                       }
  1913.                       else
  1914.                       {
  1915.                        if(strstr(temp,"angle") != 0){ /* angle diplay radian */
  1916.                         slider = 3;
  1917.                        }
  1918.                        else
  1919.                        {
  1920.                         canvas_error("slider types may be : x , y , xy , angle");
  1921.                        }
  1922.                       }
  1923.                      }
  1924.                     }
  1925.                     if(strstr(temp,"display")!=0){
  1926.                      use_slider_display = 1; /* show x xy values in canvas window */
  1927.                     }
  1928.                     else
  1929.                     {
  1930.                      if(strstr(temp,"degree")!= 0){
  1931.                       use_slider_display = 2; /* show angle values in canvas window */
  1932.                      }
  1933.                      else
  1934.                      {
  1935.                       if(strstr(temp,"radian")!=0){
  1936.                        use_slider_display = 3; /* show radian values in canvas window */
  1937.                       }
  1938.                      }
  1939.                     }
  1940.                     if(use_slider_display != 0 && slider_cnt == 0){ /*add just once the display js-code */
  1941.                      add_slider_display(js_include_file,canvas_root_id,precision,font_size,font_color,stroke_opacity);
  1942.                     }
  1943.                     break;
  1944.                     case 5: /* some string used for slider description  */
  1945.                     slider_cnt++;
  1946.                     if(slider == 4){
  1947.                      add_xyslider(js_include_file,canvas_root_id,double_data[0],double_data[1],int_data[0],int_data[1],slider,get_string_argument(infile,1),slider_cnt,stroke_color,fill_color,line_width,fill_opacity,font_family,font_color,use_slider_display );
  1948.                     }else{
  1949.                      add_slider(js_include_file,canvas_root_id,double_data[0],double_data[1],int_data[0],int_data[1],slider,get_string_argument(infile,1),slider_cnt,stroke_color,fill_color,line_width,fill_opacity,font_family,font_color,use_slider_display);
  1950.                     }
  1951.                     break;
  1952.                 }
  1953.              }
  1954.             break;
  1955.         case SGRAPH:
  1956.         /*
  1957.          @ sgraph xstart,ystart,xmajor,ymajor,xminor,yminor,majorgrid_color,minorgrid_color
  1958.          @ primitive implementation of a 'broken scale' graph...
  1959.          @ 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 />
  1960.          @ 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
  1961.         */
  1962.             if( js_function[DRAW_SGRAPH] != 1 ){ js_function[DRAW_SGRAPH] = 1;}
  1963.             for(i = 0 ; i < 8 ;i++){
  1964.                 switch(i){
  1965.                     case 0:double_data[0] = get_real(infile,0);break;
  1966.                     case 1:double_data[1] = get_real(infile,0);break;
  1967.                     case 2:double_data[2] = get_real(infile,0);break;
  1968.                     case 3:double_data[3] = get_real(infile,0);break;
  1969.                     case 4:int_data[0] = (int)(get_real(infile,0));break;
  1970.                     case 5:int_data[1] = (int)(get_real(infile,0));break;
  1971.                     case 6:stroke_color = get_color(infile,0);break;
  1972.                     case 7:font_color = get_color(infile,1);
  1973.                     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);
  1974.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1975.                     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);
  1976.                     add_to_buffer(tmp_buffer);
  1977.                     break;
  1978.                     default:break;
  1979.                 }
  1980.             }
  1981.             /* sgraph(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily,opacity)*/
  1982.             break;
  1983.         case GRID:/* xmajor,ymajor,color [,xminor,yminor,tick length (px) ,color]*/
  1984.         /*
  1985.          @ grid step_x,step_y,gridcolor
  1986.          @ use command "fontcolor", "fontsize" , "fontfamily" to adjust font <br />defaults: black,12,Ariel
  1987.          @ 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
  1988.          @ 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)
  1989.          @ can not be set "onclick" or "drag xy"
  1990.          @ 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')
  1991.          @ 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')
  1992.          @ 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')
  1993.         */
  1994.             if( js_function[DRAW_YLOGSCALE] == 1 ){canvas_error("only one grid type is allowed...");}
  1995.             if( js_function[DRAW_GRID] != 1 ){ js_function[DRAW_GRID] = 1;}
  1996.             for(i=0;i<4;i++){
  1997.                 switch(i){
  1998.                     case 0:double_data[0] = get_real(infile,0);break;/* xmajor */
  1999.                     case 1:double_data[1] = get_real(infile,0);break;/* ymajor */
  2000.                     case 2:
  2001.                     if( use_axis == TRUE ){
  2002.                         stroke_color = get_color(infile,0);
  2003.                         done = FALSE;
  2004.                         int_data[0] = (int) (get_real(infile,0));/* xminor */
  2005.                         int_data[1] = (int) (get_real(infile,0));/* yminor */
  2006.                         int_data[2] = (int) (get_real(infile,0));/* tic_length */
  2007.                         fill_color = get_color(infile,1); /* used as axis_color*/
  2008.                     }
  2009.                     else
  2010.                     {
  2011.                         int_data[0] = 1;
  2012.                         int_data[1] = 1;
  2013.                         stroke_color = get_color(infile,1);
  2014.                         fill_color = stroke_color;
  2015.                     }
  2016.                     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 !");}
  2017.                     /* set snap_x snap_y values in pixels */
  2018.                     fprintf(js_include_file,"snap_x = %f;snap_y = %f;",double_data[0] / int_data[0],double_data[1] / int_data[1]);
  2019.                     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);
  2020.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2021.                     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);
  2022.                     add_to_buffer(tmp_buffer);
  2023.                     break;
  2024.                 }
  2025.             }
  2026.             reset();
  2027.             break;
  2028.         case OPACITY:
  2029.         /*
  2030.         @ opacity 0-255,0-255
  2031.         @
  2032.         */
  2033.             for(i = 0 ; i<2;i++){
  2034.                 switch(i){
  2035.                     case 0: double_data[0]=(int)(get_real(infile,0));break;
  2036.                     case 1: double_data[1]=(int)(get_real(infile,1));break;
  2037.                     default: break;
  2038.                 }
  2039.             }
  2040.             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 ? */
  2041.             stroke_opacity = (double) (0.0039215*double_data[0]);/* 0.0 - 1.0 */
  2042.             fill_opacity = (double) (0.0039215*double_data[1]);/* 0.0 - 1.0 */
  2043.             break;
  2044.         case ROTATE:
  2045.         /*
  2046.          @rotate rotation_angle
  2047.          @angle in degrees
  2048.         */
  2049.             use_rotate = TRUE;
  2050.             angle = -1*(get_real(infile,1));/* -1 : to be compatible with Flydraw... */
  2051.             break;
  2052.         case KILLAFFINE:
  2053.         /*
  2054.         @ killaffine
  2055.         @ keyword : resets the transformation matrix to 1,0,0,1,0,0
  2056.         */
  2057.             use_affine = FALSE;
  2058.             snprintf(affine_matrix,14,"[1,0,0,1,0,0]");
  2059.             break;
  2060.         case AFFINE:
  2061.         /*
  2062.          @affine a,b,c,d,tx,ty
  2063.          @ defines a transformation matrix for subsequent objects
  2064.          @ use keyword 'killaffine' to end the transformation
  2065.          @ note 1: only 'draggable' / 'noclick' objects can be transformed.
  2066.          @ note 2: do not use 'onclick' or 'drag xy' with tranformation objects : the mouse coordinates do not get transformed (yet)
  2067.          @ note 3: no matrix operations on the transformation matrix implemented (yet)
  2068.          @ a : Scales the drawings horizontally
  2069.          @ b : Skews the drawings horizontally
  2070.          @ c : Skews the drawings vertically
  2071.          @ d : Scales the drawings vertically
  2072.          @ tx: Moves the drawings horizontally in xrange coordinate system
  2073.          @ ty: Moves the drawings vertically in yrange coordinate system
  2074.          @ the data precision is 2 decimals (printf : %2.f)
  2075.         */
  2076.             for(i = 0 ; i<6;i++){
  2077.                 switch(i){
  2078.                     case 0: double_data[0] = get_real(infile,0);break;
  2079.                     case 1: double_data[1] = get_real(infile,0);break;
  2080.                     case 2: double_data[2] = get_real(infile,0);break;
  2081.                     case 3: double_data[3] = get_real(infile,0);break;
  2082.                     case 4: double_data[4] = get_real(infile,0);break;
  2083.                     case 5: double_data[5] = get_real(infile,1);
  2084.                         use_affine = TRUE;
  2085.                         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));
  2086.                         check_string_length(string_length);affine_matrix = my_newmem(string_length+1);
  2087.                         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));
  2088.                         break;
  2089.                     default: break;
  2090.                 }
  2091.             }
  2092.         break;
  2093.         case KILLTRANSLATION:
  2094.         /*
  2095.          killtranslation
  2096.         */
  2097.             use_affine = FALSE;
  2098.             snprintf(affine_matrix,14,"[1,0,0,1,0,0]");
  2099.             break;
  2100.         case TRANSLATION:
  2101.         /*
  2102.          @translation tx,ty
  2103.          @will translate the next object tx in xrange and ty in yrange
  2104.          @uase command 'killtranstation' to end the command
  2105.         */
  2106.             for(i = 0 ; i<2;i++){
  2107.                 switch(i){
  2108.                     case 0: double_data[0] = get_real(infile,0);break;
  2109.                     case 1: double_data[1] = get_real(infile,1);
  2110.                         use_affine = TRUE;
  2111.                         string_length = snprintf(NULL,0, "[1,0,0,1,%.2f,%.2f] ",double_data[0]*xsize/(xmax - xmin),-1*double_data[1]*ysize/(ymax - ymin));
  2112.                         check_string_length(string_length);affine_matrix = my_newmem(string_length+1);
  2113.                         snprintf(affine_matrix,string_length,"[1,0,0,1,%.2f,%.2f] ",double_data[0]*xsize/(xmax - xmin),-1*double_data[1]*ysize/(ymax - ymin));
  2114.                         break;
  2115.                     default: break;
  2116.                 }
  2117.             }
  2118.         break;
  2119.  
  2120.         case DASHED:
  2121.         /*
  2122.         @ keyword "dashed"
  2123.         @ next object will be drawn with a dashed line
  2124.         @ change dashing scheme by using command "dashtype int,int)
  2125.         */
  2126.             use_dashed = TRUE;
  2127.             break;
  2128.         case FILLED:
  2129.         /*
  2130.         @ keyword "filled"
  2131.         @ the next 'fillable' object (only) will be filled
  2132.         @ use command "fillcolor color" to set fillcolor
  2133.         @ use command "opacity 0-255,0-255" to set stroke and fill-opacity
  2134.         @ 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 !
  2135.         */
  2136.             use_filled = TRUE;
  2137.             break;
  2138.         case STYLE:
  2139.         /*
  2140.          @highlight color,opacity,linewidth
  2141.          @ NOT IMPLEMENTED
  2142.          @ use command "onclick" : when the object receives a userclick it will increase it's linewidth
  2143.         */
  2144.             break;
  2145.         case FILLCOLOR:
  2146.         /*
  2147.         @ fillcolor colorname or #hex
  2148.         @ Set the color for a filled object : mainly used for command 'userdraw obj,stroke_color'
  2149.         @ All fillable massive object will have a fillcolor == strokecolor (just to be compatible with flydraw...)
  2150.         */
  2151.             fill_color = get_color(infile,1);
  2152.             break;
  2153.         case STROKECOLOR:
  2154.         /*
  2155.         @ strokecolor colorname or #hex
  2156.         @ to be used for commands that do not supply a color argument (like command 'linegraph')
  2157.         */
  2158.             stroke_color = get_color(infile,1);
  2159.             break;
  2160.         case BGIMAGE:
  2161.         /*
  2162.          @bgimage image_location
  2163.          @use an image as background .<br />(we use the background of 'canvas_div' )
  2164.          @the background image will be resized to match "width = xsize" and "height = ysize"
  2165.         */
  2166.         URL = get_string(infile,1);
  2167.         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);
  2168.             break;
  2169.         case BGCOLOR:
  2170.         /*
  2171.          @bgcolor colorname or #hex
  2172.          @use this color as background of the "div" containing the canvas(es)
  2173.         */
  2174.         /* [255,255,255]*/
  2175.             bgcolor = get_string(infile,1);
  2176.             if(strstr(bgcolor,"#") == NULL){ /* convert colorname -> #ff00ff */
  2177.                 int found = 0;
  2178.                 for( i = 0; i < NUMBER_OF_COLORNAMES ; i++ ){
  2179.                     if( strcmp( colors[i].name , bgcolor ) == 0 ){
  2180.                         bgcolor = colors[i].hex;
  2181.                         found = 1;
  2182.                         break;
  2183.                     }
  2184.                 }
  2185.                 if(found == 0){canvas_error("your bgcolor is not in my rgb.txt data list : use hexcolor...something like #a0ffc4");}
  2186.             }
  2187.             fprintf(js_include_file,"<!-- set background color of canvas div -->\ncanvas_div.style.backgroundColor = \"%s\";canvas_div.style.opacity = %f;\n",bgcolor,fill_opacity);
  2188.             break;
  2189.         case COPY:
  2190.         /*
  2191.         @ copy x,y,x1,y1,x2,y2,[filename URL]
  2192.         @ Insert the region from (x1,y1) to (x2,y2) (in pixels) of [filename] to (x,y) in x/y-range
  2193.         @ If x1=y1=x2=y2=-1, the whole [filename URL] is copied.
  2194.         @ [filename] is the URL of the image
  2195.         @ URL is normal URL of network reachable image file location<br />(eg special url for 'classexo' not -yet- implemented)
  2196.         @ 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
  2197.         @ if you want to draw / userdraw  on an "imported" image, make sure it is transparent.<br />for example GNUPlot: set terminal gif transparent
  2198.  
  2199.         context.drawImage(img,sx,sy,swidth,sheight,x,y,width,height);
  2200.         draw_external_image(canvas_type,URL,sx,sy,swidth,sheight,x,y,width,height,drag_drop){
  2201.         */
  2202.             for(i = 0 ; i<7;i++){
  2203.                 switch(i){
  2204.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x left top corner in x/y range  */
  2205.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y left top corner in x/y range */
  2206.                     case 2: int_data[2]=(int)(get_real(infile,0));break;/* x1 in px of external image */
  2207.                     case 3: int_data[3]=(int)(get_real(infile,0));break;/* y1 in px of external image */
  2208.                     case 4: int_data[4]=(int)(get_real(infile,0));break;/* x2 --> width  */
  2209.                     case 5: int_data[5]=(int)(get_real(infile,0)) ;break;/* y2 --> height */
  2210.                     case 6: URL = get_string(infile,1);
  2211.                             int_data[6] = int_data[4] - int_data[2];/* swidth & width (if not scaling )*/
  2212.                             int_data[7] = int_data[5] - int_data[3];/* sheight & height (if not scaling )*/
  2213.                             if( drag_type > -1 ){
  2214.                                 if( js_function[DRAG_EXTERNAL_IMAGE] != 1 ){ js_function[DRAG_EXTERNAL_IMAGE] = 1;}
  2215.                                 if(reply_format == 0 ){reply_format = 20;}
  2216.                                 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);
  2217.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2218.                                 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);
  2219.                                 drag_type = -1;
  2220.                                 ext_img_cnt++;
  2221.                             }
  2222.                             else
  2223.                             {
  2224.                                 if( js_function[DRAW_EXTERNAL_IMAGE] != 1 ){ js_function[DRAW_EXTERNAL_IMAGE] = 1;}
  2225.                                 /*
  2226.                                 draw_external_image = function(URL,sx,sy,swidth,sheight,x0,y0,width,height,draggable){\n\
  2227.                                 */
  2228.                                 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]);
  2229.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2230.                                 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]);
  2231.                             }
  2232.                             add_to_buffer(tmp_buffer);
  2233.                             break;
  2234.                     default: break;
  2235.                 }
  2236.             }
  2237.             reset();
  2238.             break;
  2239. /*
  2240. context.drawImage(img,sx,sy,swidth,sheight,x,y,width,height);
  2241. img     Specifies the image, canvas, or video element to use
  2242. sx      The x coordinate where to start clipping : x1 = int_data[0]
  2243. sy      The y coordinate where to start clipping : x2 = int_data[1]
  2244. swidth  The width of the clipped image : int_data[2] - int_data[0]
  2245. sheight The height of the clipped image : int_data[3] - int_data[1]
  2246. x       The x coordinate where to place the image on the canvas : dx1 = int_data[4]
  2247. y       The y coordinate where to place the image on the canvas : dy1 = int_data[5]
  2248. width   The width of the image to use (stretch or reduce the image) : dx2 - dx1 = int_data[6]
  2249. height  The height of the image to use (stretch or reduce the image) : dy2 - dy1 = int_data[7]
  2250. */
  2251.         case COPYRESIZED:
  2252.         /*
  2253.         @ copyresized x1,y2,x2,y2,dx1,dy1,dx2,dy2,image_file_url
  2254.         @ 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
  2255.         @ If x1=y1=x2=y2=-1, the whole [filename / URL ] is copied and resized.
  2256.         @ URL is normal URL of network reachable image file location<br />(eg special url for 'classexo' not -yet- implemented)
  2257.         @ 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
  2258.         @ if you want to draw / userdraw  on an "imported" image, make sure it is transparent.<br />for example GNUPlot: set terminal gif transparent
  2259.         */
  2260.             for(i = 0 ; i<9;i++){
  2261.                 switch(i){
  2262.                     case 0: int_data[0] = (int)(get_real(infile,0));break; /* x1 */
  2263.                     case 1: int_data[1] = (int)(get_real(infile,0));break; /* y1 */
  2264.                     case 2: int_data[2] = (int)(get_real(infile,0));break;/* x2 */
  2265.                     case 3: int_data[3] = (int)(get_real(infile,0));break;/* y2 */
  2266.                     case 4: int_data[4] = x2px(get_real(infile,0));break;/* dx1 */
  2267.                     case 5: int_data[5] = y2px(get_real(infile,0));break;/* dy1 */
  2268.                     case 6: int_data[6] = x2px(get_real(infile,0));break;/* dx2 */
  2269.                     case 7: int_data[7] = y2px(get_real(infile,0));break;/* dy2 */
  2270.                     case 8: URL = get_string(infile,1);
  2271.                             if( drag_type > -1 ){
  2272.                                 if( js_function[DRAG_EXTERNAL_IMAGE] != 1 ){ js_function[DRAG_EXTERNAL_IMAGE] = 1;}
  2273.                                 if(reply_format == 0 ){reply_format = 20;}
  2274.                                 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);
  2275.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2276.                                 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);
  2277.                                 drag_type = -1;
  2278.                                 ext_img_cnt++;
  2279.                             }
  2280.                             else
  2281.                             {
  2282.                                 if( js_function[DRAW_EXTERNAL_IMAGE] != 1 ){ js_function[DRAW_EXTERNAL_IMAGE] = 1;}
  2283.                                 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]);
  2284.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2285.                                 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]);
  2286.                             }
  2287.                             add_to_buffer(tmp_buffer);
  2288.                     default: break;
  2289.                 }
  2290.             }
  2291.             reset();
  2292.             break;
  2293.         case CLEARBUTTON:
  2294.         /*
  2295.          @clearbutton value
  2296.          @adds a button to clear the userdraw canvas with text 'value'
  2297.          @normally userdraw primitives have the option to use middle/right mouse button on<br /> a point of the object to remove this specific object...this clear button will remove all drawings
  2298.          @uses the tooltip placeholder div element: may not be used with command 'intooltip'
  2299.          @use command 'inputstyle' to style the button...
  2300.         */
  2301.             add_clear_button(js_include_file,canvas_root_id,input_style,get_string(infile,1));
  2302.         break;
  2303.         case INPUTSTYLE:
  2304.         /*
  2305.         @ inputstyle style_description
  2306.         @ example: inputstyle color:blue;font-weight:bold;font-style:italic;font-size:16pt
  2307.         */
  2308.             input_style = get_string(infile,1);
  2309.             break;
  2310.         case INPUT:
  2311.         /*
  2312.          @ input x,y,size,editable,value
  2313.          @ to set inputfield "readonly", use editable = 0
  2314.          @ only active inputfields (editable = 1) will be read with read_canvas();
  2315.          @ if "$status=done"  (e.g. in answer.phtml) the inputfield will be clearedand set readonly<br />Override this by keyword 'status'
  2316.          @ may be further controlled by "inputstyle" (inputcss is not yet implemented...)
  2317.          @ if mathml inputfields are present and / or some userdraw is performed, these data will NOT be send as well (javascript:read_canvas();)
  2318.         */
  2319.         if( js_function[DRAW_INPUTS] != 1 ){ js_function[DRAW_INPUTS] = 1;}
  2320.             for(i = 0 ; i<5;i++){
  2321.                 switch(i){
  2322.                     case 0: int_data[0]=x2px(get_real(infile,0));break;/* x in px */
  2323.                     case 1: int_data[1]=y2px(get_real(infile,0));break;/* y in px */
  2324.                     case 2: int_data[2]=abs( (int)(get_real(infile,0)));break; /* size */
  2325.                     case 3: if( get_real(infile,1) >0){int_data[3] = 1;}else{int_data[3] = 0;};break; /* readonly */
  2326.                     case 4:
  2327.                             temp = get_string_argument(infile,1);
  2328.                             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);
  2329.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2330.                             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);
  2331.                             add_to_buffer(tmp_buffer);
  2332.                             input_cnt++;break;
  2333.                     default: break;
  2334.                 }
  2335.             }
  2336.             if(reply_format == 0 ){reply_format = 15;}
  2337.             reset();
  2338.             break;
  2339.         case TEXTAREA:
  2340.         /*
  2341.          @ textarea x,y,cols,rows,readonly,value
  2342.          @ may be further controlled by "inputstyle"
  2343.          @ if "$status=done"  (e.g. in answer.phtml) the inputfield will be clearedand set readonly<br />Override this by keyword 'status'
  2344.          @ if mathml inputfields are present and / or some userdraw is performed, these data will NOT be send as well (javascript:read_canvas();)
  2345.         */
  2346.             if( js_function[DRAW_TEXTAREAS] != 1 ){ js_function[DRAW_TEXTAREAS] = 1;}
  2347.             for(i = 0 ; i<6;i++){
  2348.                 switch(i){
  2349.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in px */
  2350.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in px */
  2351.                     case 2: int_data[2]=abs( (int)(get_real(infile,0)));break;/* cols */
  2352.                     case 3: int_data[3]=abs( (int)(get_real(infile,0)));break;/* rows */
  2353.                     case 4: if( get_real(infile,1) >0){int_data[4] = 1;}else{int_data[3] = 0;};break; /* readonly */
  2354.                     case 5: temp = get_string_argument(infile,1);
  2355.                             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);
  2356.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2357.                             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);
  2358.                             add_to_buffer(tmp_buffer);
  2359.                             input_cnt++;break;
  2360.                     default: break;
  2361.                 }
  2362.             }
  2363.             if(reply_format == 0 ){reply_format = 15;}
  2364.             reset();
  2365.             break;
  2366.         case MOUSE_PRECISION:
  2367.         /*
  2368.             @ precision int
  2369.             @ 1 = no decimals ; 10 = 1 decimal ; 100 = 2 decimals etc
  2370.             @ may be used / changed before every object
  2371.             @ In case of user interaction (like 'userdraw') this value will be used to determine the amount of decimals in the reply / answer
  2372.         */
  2373.             precision = (int) (get_real(infile,1));
  2374.             if(precision < 1 ){precision = 1;};
  2375.             break;
  2376.         case SETLIMITS:
  2377.         /*
  2378.             @setlimits
  2379.             @keyword : if set, it will produce 4 inputfields for 'xmin,xmax,ymin,ymax' and an 'ok' button
  2380.             @may be used for inputfield based zooming / panning
  2381.             @use command xlabel / ylabel to change text from xmin to 'xlabel'min etc
  2382.             @note:the input value will not be checked on validity
  2383.         */
  2384.             if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  2385.             add_setlimits(js_include_file,canvas_root_id);
  2386.             /* add_setlimits provides 'fprintf(js_include_file,"use_pan_and_zoom = 1;");' */
  2387.             use_pan_and_zoom = TRUE;
  2388.             done = TRUE;
  2389.             break;
  2390.         case ZOOM:
  2391.         /*
  2392.          @ zoom button_color
  2393.          @ introduce a controlpanel at the lower right corner
  2394.          @ 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
  2395.          @ the 'x' symbol will do a 'location.reload' of the page, and thus reset all canvas drawings.
  2396.          @ choose an appropriate colour, so the small 'x,arrows,-,+' are clearly visible
  2397.          @ command 'opacity' may be used to set stroke_opacity of 'buttons
  2398.          @ NOTE: use command 'zoom' at the end of your script code (the same is true for commanmd 'mouse')
  2399.          @ NOTE: only objects that may be set draggable / clickable will be zoomed / panned
  2400.          @ 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 !!
  2401.         */
  2402.             fprintf(js_include_file,"use_pan_and_zoom = 1;");
  2403.             use_pan_and_zoom = TRUE;
  2404.             stroke_color = get_color(infile,1);
  2405.             /* we use BG_CANVAS (0) */
  2406.             add_zoom_buttons(js_include_file,canvas_root_id,stroke_color,stroke_opacity);
  2407.             done = TRUE;
  2408.             break;
  2409.         case ONCLICK:
  2410.         /*
  2411.          @ onclick
  2412.          @ keyword, no arguments
  2413.          @ if the next object is clicked, it's 'object sequence number' in fly script is returned <br /> by javascript:read_canvas();
  2414.          @ Line based object will show an increase in linewidth<br />Font based objects will show the text in 'bold' when clicked.
  2415.          @ NOTE: not all objects may be set clickable
  2416.         */
  2417.  
  2418.             onclick = 1;
  2419.             break;
  2420.         case DRAG:
  2421.         /*
  2422.          @ drag [x][y][xy]
  2423.          @ the next object will be draggable in x / y / xy direction
  2424.          @ the displacement can be read by 'javascript:read_dragdrop();'
  2425.          @ 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' !
  2426.          @ 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)
  2427.          @ use keywordd 'snaptogrid' , 'xsnaptogrid' or 'ysnaptogrid' to switch from free to discrete movement
  2428.          @ 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.
  2429.          @ 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 !!
  2430.         */
  2431.             temp = get_string(infile,1);
  2432.             if(strstr(temp,"xy") != NULL ){
  2433.                 drag_type = 0;
  2434.             }
  2435.             else
  2436.             {
  2437.                 if(strstr(temp,"x") != NULL ){
  2438.                     drag_type = 1;
  2439.                 }
  2440.                 else
  2441.                 {
  2442.                     drag_type = 2;
  2443.                 }
  2444.             }
  2445.             fprintf(js_include_file,"var dragdrop_precision = %d;",precision);
  2446.             onclick = 2;
  2447.             /* if(use_userdraw == TRUE ){canvas_error("\"drag & drop\" may not be combined with \"userdraw\" or \"pan and zoom\" \n");} */
  2448.             break;
  2449.         case BLINK:
  2450.         /*
  2451.          @ blink time(seconds)
  2452.          @ NOT IMPLEMETED -YET
  2453.         */
  2454.             break;
  2455.         case XUNIT:
  2456.         /*
  2457.          @ xunit some_unit_for_x-values
  2458.          @ unicode allowed (no html code)
  2459.          @ use together with command mousex
  2460.          @ will display the cursor x-coordinate 'unit'
  2461.         */
  2462.             fprintf(js_include_file,"unit_x = \"%s\";",get_string(infile,1));
  2463.             break;
  2464.         case YUNIT:
  2465.         /*
  2466.          @ yunit some_unit_for_y-values
  2467.          @ unicode allowed (no html code)
  2468.          @ use together with command mousex
  2469.          @ will display the cursor y-coordinate 'unit'
  2470.         */
  2471.             fprintf(js_include_file,"unit_y = \"%s\";",get_string(infile,1));
  2472.             break;
  2473.         case MOUSE_DISPLAY:
  2474.         /*
  2475.          @display x|y|xy|degree|radius,color,fontsize
  2476.          @will display the mouse cursor coordinates as x-only,y-only,(x:y),<br />the radius of a circle (this only in case 'userdraw circle(s),color' !!<br />or the angle in degrees ( rhe angle between x-axis;(0:0);(x:y)
  2477.          @use commands 'xunit' and / or 'yunit' to add the units to the mouse values
  2478.          @just like commands 'mouse','mousex','mousey','mouse_degree'...only other name)
  2479.         */
  2480.         temp = get_string_argument(infile,0);
  2481.         if( strstr(temp,"xy") != NULL ){
  2482.             int_data[0] = 2;
  2483.         }else{
  2484.             if( strstr(temp,"y") != NULL ){
  2485.                 int_data[0] = 1;
  2486.             }else{
  2487.                 if( strstr(temp,"x") != NULL ){
  2488.                     int_data[0] = 0;
  2489.                 }else{
  2490.                     if(strstr(temp,"degree") != NULL){
  2491.                         int_data[0] = 3;
  2492.                     }else{
  2493.                         if(strstr(temp,"radius") != NULL){
  2494.                             int_data[0] = 4;
  2495.                         }else{
  2496.                             int_data[0] = 2;
  2497.                         }
  2498.                     }
  2499.                 }
  2500.             }
  2501.         }
  2502.         stroke_color = get_color(infile,0);
  2503.         font_size = (int) (get_real(infile,1));
  2504.         tmp_buffer = my_newmem(26);
  2505.         snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2506.         add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,int_data[0]);
  2507.         break;
  2508.         case MOUSE_DEGREE:
  2509.         /*
  2510.          @ mouse_degree color,fontsize
  2511.          @ 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
  2512.          @ The angle is positive in QI and QIII and the angle value is negative in QII and QIV
  2513.          @ NOTE: use command 'mouse' at the end of your script code (the same is true for command 'zoom')
  2514.  
  2515.         */
  2516.             stroke_color = get_color(infile,0);
  2517.             font_size = (int) (get_real(infile,1));
  2518.             tmp_buffer = my_newmem(26);
  2519.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2520.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,3);
  2521.             break;
  2522.         case MOUSEX:
  2523.         /*
  2524.          @ mousex color,fontsize
  2525.          @ will display the cursor x-coordinate in 'color' and 'font size'<br /> using default fontfamily Ariel
  2526.          @ NOTE: use command 'mouse' at the end of your script code (the same is true for command 'zoom')
  2527.  
  2528.         */
  2529.             stroke_color = get_color(infile,0);
  2530.             font_size = (int) (get_real(infile,1));
  2531.             tmp_buffer = my_newmem(26);
  2532.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2533.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,0);
  2534.             break;
  2535.         case MOUSEY:
  2536.         /*
  2537.          @ mousey color,fontsize
  2538.          @ will display the cursor y-coordinate in 'color' and 'font size'<br /> using default fontfamily Ariel
  2539.          @ NOTE: use command 'mouse' at the end of your script code (the same is true for command 'zoom')
  2540.  
  2541.         */
  2542.             stroke_color = get_color(infile,0);
  2543.             font_size = (int) (get_real(infile,1));
  2544.             tmp_buffer = my_newmem(26);
  2545.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2546.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,1);
  2547.             break;
  2548.         case MOUSE:
  2549.         /*
  2550.          @ mouse color,fontsize
  2551.          @ will display the cursor (x:y) coordinates  in 'color' and 'font size'<br /> using default fontfamily Ariel
  2552.          @ NOTE: use command 'mouse' at the end of your script code (the same is true for commanmd 'zoom')
  2553.  
  2554.         */
  2555.             stroke_color = get_color(infile,0);
  2556.             font_size = (int) (get_real(infile,1));
  2557.             tmp_buffer = my_newmem(26);
  2558.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2559.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,2);
  2560.             break;
  2561.         case INTOOLTIP:
  2562.             /*
  2563.             @ intooltip link_text
  2564.             @ link_text is a single line (span-element)
  2565.             @ link_text may also be an image URL http://some_server/images/my_image.png
  2566.             @ link_text may contain HTML markup
  2567.             @ the canvas will be displayed in a tooltip on 'link_text'
  2568.             @ the canvas is default transparent: use command 'bgcolor color' to adjust background-color<br />the link test will alos be shown with this bgcolor.
  2569.             */
  2570.             if(use_input_xy != FALSE ){canvas_error("intooltip can not be combined with userinput_xy command");}
  2571.             use_tooltip = TRUE;
  2572.             tooltip_text = get_string(infile,1);
  2573.             if(strstr(tooltip_text,"\"") != 0 ){ tooltip_text = str_replace(tooltip_text,"\"","'"); }
  2574.             break;
  2575.         case AUDIO:
  2576.         /*
  2577.         @ audio x,y,w,h,loop,visible,audiofile location
  2578.         @ x,y : left top corner of audio element (in xrange / yrange)
  2579.         @ w,y : width and height in pixels
  2580.         @ loop : 0 or 1 ( 1 = loop audio fragment)
  2581.         @ visible : 0 or 1 (1 = show controls)
  2582.         @ audio format may be in *.mp3 or *.ogg
  2583.         @ If you are using *.mp3 : be aware that FireFox will not (never) play this ! (Pattented format)
  2584.         @ if you are using *.ogg : be aware that Microsoft based systems not support it natively
  2585.         @ To avoid problems supply both types (mp3 and ogg) of audiofiles.<br />the program will use both as source tag
  2586.         @ 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 />
  2587.         */
  2588.             if( js_function[DRAW_AUDIO] != 1 ){ js_function[DRAW_AUDIO] = 1;}
  2589.             for(i=0;i<7;i++){
  2590.                 switch(i){
  2591.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x in x/y-range coord system -> pixel */
  2592.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y in x/y-range coord system  -> pixel */
  2593.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* pixel width */
  2594.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* height pixel height */
  2595.                     case 4: int_data[4] = (int) (get_real(infile,0)); if(int_data[4] != TRUE){int_data[4] = FALSE;} break; /* loop boolean */
  2596.                     case 5: int_data[5] = (int) (get_real(infile,0)); if(int_data[5] != TRUE){int_data[5] = FALSE;} break; /* visible boolean */
  2597.                     case 6:
  2598.                     temp = get_string(infile,1);
  2599.                     if( strstr(temp,".mp3") != 0 ){ temp = str_replace(temp,".mp3","");}
  2600.                     if( strstr(temp,".ogg") != 0 ){ temp = str_replace(temp,".ogg","");}
  2601.                     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);
  2602.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2603.                     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);
  2604.                     add_to_buffer(tmp_buffer);
  2605.                     break;
  2606.                     default:break;
  2607.                 }
  2608.             }
  2609.             reset();
  2610.             break;
  2611.         case VIDEO:
  2612.         /*
  2613.         @ video x,y,w,h,videofile location
  2614.         @ x,y : left top corner of audio element (in xrange / yrange)
  2615.         @ w,y : width and height in pixels
  2616.         @ example:<br />wims getfile : video 0,0,120,120,myvideo.mp4
  2617.         @ video format may be in *.mp4 (todo:other formats)
  2618.         */
  2619.             if( js_function[DRAW_VIDEO] != 1 ){ js_function[DRAW_VIDEO] = 1;}
  2620.             for(i=0;i<5;i++){
  2621.                 switch(i){
  2622.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x in x/y-range coord system -> pixel */
  2623.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y in x/y-range coord system  -> pixel */
  2624.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* pixel width */
  2625.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* height pixel height */
  2626.                     case 4: temp = get_string(infile,1);
  2627.                             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);
  2628.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2629.                             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);
  2630.                             add_to_buffer(tmp_buffer);
  2631.                             break;
  2632.                     default:break;
  2633.                 }
  2634.             }
  2635.             reset();
  2636.             break;
  2637.         case HATCHFILL:
  2638.         /*
  2639.         @ hatchfill x0,y0,dx,dy,color
  2640.         @ x0,y0 in xrange / yrange
  2641.         @ distances dx,dy in pixels
  2642.         */
  2643.             if( js_function[DRAW_HATCHFILL] != 1 ){ js_function[DRAW_HATCHFILL] = 1;}
  2644.             for(i=0;i<5;i++){
  2645.                 switch(i){
  2646.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2647.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2648.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2649.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2650.                     case 4: stroke_color = get_color(infile,1);
  2651.                     /* draw_hatchfill(ctx,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize) */
  2652.                     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);
  2653.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2654.                     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);
  2655.                     add_to_buffer(tmp_buffer);
  2656.                     break;
  2657.                     default:break;
  2658.                 }
  2659.             }
  2660.             reset();
  2661.         break;
  2662.         case DIAMONDFILL:
  2663.         /*
  2664.         @ diamondfill x0,y0,dx,dy,color
  2665.         @ x0,y0 in xrange / yrange
  2666.         @ distances dx,dy in pixels
  2667.         */
  2668.             if( js_function[DRAW_DIAMONDFILL] != 1 ){ js_function[DRAW_DIAMONDFILL] = 1;}
  2669.             for(i=0;i<5;i++){
  2670.                 switch(i){
  2671.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2672.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2673.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2674.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2675.                     case 4: stroke_color = get_color(infile,1);
  2676.                     /* draw_hatchfill(ctx,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize) */
  2677.                     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);
  2678.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2679.                     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);
  2680.                     add_to_buffer(tmp_buffer);
  2681.                     break;
  2682.                     default:break;
  2683.                 }
  2684.             }
  2685.             reset();
  2686.         break;
  2687.         case GRIDFILL:
  2688.         /*
  2689.         @ gridfill x0,y0,dx,dy,color
  2690.         @ x0,y0 in xrange / yrange
  2691.         @ distances dx,dy in pixels
  2692.         @ a draggable object may snap_to_grid (using keywords xysnaptogrid,xsnaprogrid, ysnaptogrid)
  2693.         @ userdraw object may snap_to_grid
  2694.         */
  2695.             if( js_function[DRAW_GRIDFILL] != 1 ){ js_function[DRAW_GRIDFILL] = 1;}
  2696.             for(i=0;i<5;i++){
  2697.                 switch(i){
  2698.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2699.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2700.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2701.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2702.                     case 4: stroke_color = get_color(infile,1);
  2703.                     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);
  2704.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2705.                     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);
  2706.                     add_to_buffer(tmp_buffer);
  2707.                     break;
  2708.                     default:break;
  2709.                 }
  2710.             }
  2711.             reset();
  2712.         break;
  2713.         case DOTFILL:
  2714.         /*
  2715.         @ dotfill x0,y0,dx,dy,color
  2716.         @ x0,y0 in xrange / yrange
  2717.         @ distances dx,dy in pixels
  2718.         @ radius of dots is linewidth
  2719.         */
  2720.             if( js_function[DRAW_DOTFILL] != 1 ){ js_function[DRAW_DOTFILL] = 1;}
  2721.             for(i=0;i<5;i++){
  2722.                 switch(i){
  2723.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2724.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2725.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2726.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2727.                     case 4: stroke_color = get_color(infile,1);
  2728.                     /* draw_dotfill(ctx,x0,y0,dx,dy,radius,color,opacity,xsize,ysize) */
  2729.                     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);
  2730.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2731.                     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);
  2732.                     add_to_buffer(tmp_buffer);
  2733.                     break;
  2734.                     default:break;
  2735.                 }
  2736.             }
  2737.             reset();
  2738.         break;
  2739.         case IMAGEFILL:
  2740.         /*
  2741.         @ imagefill dx,dy,image_url
  2742.         @ The next suitable <b>filled object</b> will be filled with "image_url" tiled
  2743.         @ After pattern filling ,the fill-color should be reset !
  2744.         @ wims getins / image from class directory : imagefill 80,80,my_image.gif
  2745.         @ normal url : imagefill 80,80,$module_dir/gifs/my_image.gif
  2746.         @ normal url : imagefill 80,80,http://adres/a/b/c/my_image.jpg
  2747.         @ if dx,dy is larger than the image, the whole image will be background to the next object.
  2748.         */
  2749.             if( js_function[DRAW_IMAGEFILL] != 1 ){ js_function[DRAW_IMAGEFILL] = 1;}
  2750.             for(i=0 ;i < 3 ; i++){
  2751.                 switch(i){
  2752.                     case 0:int_data[0] = (int) (get_real(infile,0));break;
  2753.                     case 1:int_data[1] = (int) (get_real(infile,0));break;
  2754.                     case 2: URL = get_string_argument(infile,1);
  2755.                             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);
  2756.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2757.                             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);
  2758.                             add_to_buffer(tmp_buffer);
  2759.                     break;
  2760.                 }
  2761.             }
  2762.             reset();
  2763.         break;
  2764.         case FILLTOBORDER:
  2765.         /*
  2766.         @ filltoborder x,y,bordercolor,color
  2767.         @ fill the region  of point (x:y) bounded by 'bordercolor' with color 'color'
  2768.         @ any other color will not act as border to the bucket fill
  2769.         @ use this command  after all boundary objects are declared.
  2770.         @ 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..
  2771.         */
  2772.             for(i=0 ;i < 4 ; i++){
  2773.                 switch(i){
  2774.                     case 0:double_data[0] = get_real(infile,0);break;
  2775.                     case 1:double_data[1] = get_real(infile,0);break;
  2776.                     case 2:bgcolor = get_color(infile,0);break;
  2777.                     case 3:fill_color = get_color(infile,1);
  2778.                            if(js_function[DRAW_FILLTOBORDER] != 1 ){/* use only once */
  2779.                                 js_function[DRAW_FILLTOBORDER] = 1;
  2780.                                 add_js_filltoborder(js_include_file,canvas_root_id);
  2781.                            }
  2782.                            decimals = find_number_of_digits(precision);
  2783.                            /* we need to set a timeout: the canvas is not yet draw in memory? when floodfill is called directly... */
  2784.                            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));
  2785.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2786.                            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));
  2787.                            add_to_buffer(tmp_buffer);
  2788.                            break;
  2789.                     default:break;
  2790.                 }
  2791.             }
  2792.             reset();
  2793.         break;
  2794.         case FLOODFILL:
  2795.         /*
  2796.         @ floodfill x,y,color
  2797.         @ alternative syntax: fill x,y,color
  2798.         @ fill the region of point (x:y) with color 'color'
  2799.         @ any other color or size of picture (borders of picture) will act as border to the bucket fill
  2800.         @ use this command  after all boundary objects are declared.
  2801.         @ Use command 'clickfill,color' for user click driven flood fill.
  2802.         @ NOTE: recognised colour boundaries are in the "drag canvas" e.g. only for objects that can be set draggable / clickable
  2803.         @ 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..
  2804.         */
  2805.             for(i=0 ;i < 4 ; i++){
  2806.                 switch(i){
  2807.                     case 0:double_data[0] = get_real(infile,0);break;
  2808.                     case 1:double_data[1] = get_real(infile,0);break;
  2809.                     case 2:fill_color = get_color(infile,1);
  2810.                            if(js_function[DRAW_FLOODFILL] != 1 ){/* use only once */
  2811.                                 js_function[DRAW_FLOODFILL] = 1;
  2812.                                 add_js_floodfill(js_include_file,canvas_root_id);
  2813.                            }
  2814.                            decimals = find_number_of_digits(precision);/*floodfill(interaction,x,y,[R,G,B,A]) */
  2815.                            /* we need to set a timeout: the canvas is not yet draw in memory? when floodfill is called directly... */
  2816.                            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));
  2817.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2818.                            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));
  2819.                            add_to_buffer(tmp_buffer);
  2820.                            break;
  2821.                     default:break;
  2822.                 }
  2823.             }
  2824.             reset();
  2825.         break;
  2826.         case CLICKFILLMARGE:
  2827.             clickfillmarge = (int) (get_real(infile,1));
  2828.             break;
  2829.         /*
  2830.         @ clickfillmarge int
  2831.         @ default 20 (pixels)
  2832.         @ 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[])
  2833.         */
  2834.         case CLICKFILL:
  2835.         /*
  2836.         @ clickfill fillcolor
  2837.         @ user left mouse click will floodfill the area with fillcolor
  2838.         @ multiple areas may be coloured
  2839.         @ 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)
  2840.         @ the answer will be read as the (x:y) click coordinates per coloured area
  2841.         @ background color of main div may be set by using command "bgcolor color"
  2842.         @ may not be combined with command "userdraw"
  2843.         @ NOTE: recognised colour boundaries are in the "drag canvas" e.g. only for objects that can be set draggable / clickable
  2844.         */
  2845.          fill_color = get_color(infile,1);
  2846.          if(js_function[DRAW_FLOODFILL] != 1 ){/* use only once */
  2847.             js_function[DRAW_FLOODFILL] = 1;
  2848.             add_js_floodfill(js_include_file,canvas_root_id);
  2849.          }
  2850.          fprintf(js_include_file,"\n<!-- begin command clickfill -->\nvar marge_xy = %d;userdraw_x = new Array();userdraw_y = new Array();var user_clickfill_cnt = 0;\ncanvas_div.addEventListener(\"mousedown\",clickfill,false);function clickfill(evt){var x = evt.clientX - findPosX(canvas_div) + document.body.scrollLeft + document.documentElement.scrollLeft;var y = evt.clientY - findPosY(canvas_div) + document.body.scrollTop + document.documentElement.scrollTop;if(evt.which != 1){for(var p=0; p < user_clickfill_cnt;p++){if(userdraw_x[p] + marge_xy > x && userdraw_x[p] - marge_xy < x){if(userdraw_y[p] + marge_xy > y && userdraw_y[p] - marge_xy < y){if(confirm(\"Clear ?\")){floodfill(1,userdraw_x[p],userdraw_y[p],canvas_div.style.backgroundColor || [255,255,255,0]);userdraw_x.splice(p,2);userdraw_y.splice(p,2);user_clickfill_cnt--;return;};};};};};userdraw_x[user_clickfill_cnt] = x;userdraw_y[user_clickfill_cnt] = y;user_clickfill_cnt++;floodfill(1,x,y,[%s,%d]);};",clickfillmarge,fill_color,(int) (fill_opacity/0.0039215));
  2851.          add_read_canvas(1,reply_precision);
  2852.          reset();
  2853.         break;
  2854.         case SETPIXEL:
  2855.         /*
  2856.         @ setpixel x,y,color
  2857.         @ A "point" with diameter 1 pixel centeres at (x:y) in xrange / yrange
  2858.         @ pixels can not be dragged or clicked
  2859.         @ "pixelsize = 1" may be changed by command "pixelsize int"
  2860.         */
  2861.             if( js_function[DRAW_PIXELS] != 1 ){ js_function[DRAW_PIXELS] = 1;}
  2862.             for(i=0;i<3;i++){
  2863.                 switch(i){
  2864.                     case 0: double_data[0] = get_real(infile,0); break; /* x */
  2865.                     case 1: double_data[1] = get_real(infile,0); break; /* y  */
  2866.                     case 2: stroke_color = get_color(infile,1);
  2867.                            string_length = snprintf(NULL,0,"draw_setpixel([%f],[%f],\"%s\",%.2f,%d);\n",double_data[0],double_data[1],stroke_color,stroke_opacity,pixelsize);
  2868.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2869.                            snprintf(tmp_buffer,string_length,"draw_setpixel([%f],[%f],\"%s\",%.2f,%d);\n",double_data[0],double_data[1],stroke_color,stroke_opacity,pixelsize);
  2870.                            add_to_buffer(tmp_buffer);
  2871.                            break;
  2872.                     default:break;
  2873.                 }
  2874.             }
  2875.             reset();
  2876.         break;
  2877.         case PIXELSIZE:
  2878.         /*
  2879.         @ pixelsize int
  2880.         @ in case you want to deviate from default pixelsize = 1...
  2881.         */
  2882.             pixelsize = (int) get_real(infile,1);
  2883.         break;
  2884.         case PIXELS:
  2885.         /*
  2886.         @ pixels color,x1,y1,x2,y2,x3,y3...
  2887.         @ Draw  "points" with diameter 1 pixel
  2888.         @ pixels can not be dragged or clicked
  2889.         @ "pixelsize = 1" may be changed by command "pixelsize int"
  2890.         */
  2891.             if( js_function[DRAW_PIXELS] != 1 ){ js_function[DRAW_PIXELS] = 1;}
  2892.             stroke_color=get_color(infile,0);
  2893.             i=0;
  2894.             c=0;
  2895.             while( ! done ){     /* get next item until EOL*/
  2896.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  2897.                 for( c = 0 ; c < 2; c++){
  2898.                     if(c == 0 ){
  2899.                         double_data[i] = get_real(infile,0);
  2900.                         i++;
  2901.                     }
  2902.                     else
  2903.                     {
  2904.                         double_data[i] = get_real(infile,1);
  2905.                         i++;
  2906.                     }
  2907.                 }
  2908.             }
  2909.             decimals = find_number_of_digits(precision);
  2910.             /*  *double_xy2js_array(double xy[],int len,int decimals) */
  2911.             string_length = snprintf(NULL,0,  "draw_setpixel(%s,\"%s\",%.2f,%d);\n",double_xy2js_array(double_data,i,decimals),stroke_color,stroke_opacity,pixelsize);
  2912.             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2913.             snprintf(tmp_buffer,string_length,"draw_setpixel(%s,\"%s\",%.2f,%d);\n",double_xy2js_array(double_data,i,decimals),stroke_color,stroke_opacity,pixelsize);
  2914.             add_to_buffer(tmp_buffer);
  2915.             reset();
  2916.             break;
  2917.         case REPLYFORMAT:
  2918.         /*
  2919.         @ replyformat number
  2920.         @ use number=-1 to deactivate the js-function read_canvas()
  2921.         @ default values should be fine !
  2922.         @ use command 'precision [0,1,10,100,1000,10000...]' before command 'replyformat' to set the desired number of decimals in the student reply / drawing
  2923.         @ the last value for 'precision int' will be used to calculate  the reply coordinates, if needed (read_canvas();)
  2924.         @ choose<ul><li>1 = x1,x2,x3,x4....x_n<br />y1,y2,y3,y4....y_n<br /><br />x/y in pixels</li><li>2 = x1,x2,x3,x4....x_n<br />  y1,y2,y3,y4....y_n<br /> x/y in xrange / yrange coordinate system<br /></li><li>3 = x1,x2,x3,x4....x_n<br />  y1,y2,y3,y4....y_n<br />  r1,r2,r3,r4....r_n<br />  x/y in pixels <br />  r in pixels</li><li>4 = x1,x2,x3,x4....x_n<br />  y1,y2,y3,y4....y_n<br />  r1,r2,r3,r4....r_n<br />  x/y in xrange / yrange coordinate system<br />  r in pixels</li><li>5 = Ax1,Ax2,Ax3,Ax4....Ax_n<br />  Ay1,Ay2,Ay3,Ay4....Ay_n<br />  Bx1,Bx2,Bx3,Bx4....Bx_n<br />  By1,By2,By3,By4....By_n<br />  Cx1,Cx2,Cx3,Cx4....Cx_n<br />  Cy1,Cy2,Cy3,Cy4....Cy_n<br />  ....<br />  Zx1,Zx2,Zx3,Zx4....Zx_n<br />  Zy1,Zy2,Zy3,Zy4....Zy_n<br />  x/y in pixels<br /></li><li>6 = Ax1,Ax2,Ax3,Ax4....Ax_n<br />  Ay1,Ay2,Ay3,Ay4....Ay_n<br />  Bx1,Bx2,Bx3,Bx4....Bx_n<br />  By1,By2,By3,By4....By_n<br />  Cx1,Cx2,Cx3,Cx4....Cx_n<br />  Cy1,Cy2,Cy3,Cy4....Cy_n<br />  ....<br />  Zx1,Zx2,Zx3,Zx4....Zx_n<br />  Zy1,Zy2,Zy3,Zy4....Zy_n<br />  x/y in xrange / yrange coordinate system<br /></li><li>7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n<br />  x/y in pixels</li><li>8 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n<br />  x/y in xrange / yrange coordinate system</li><li>9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n<br />  x/y in pixels</li><li>10 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n<br />  x/y in xrange / yrange coordinate system</li><li>11 = Ax1,Ay1,Ax2,Ay2<br />   Bx1,By1,Bx2,By2<br />   Cx1,Cy1,Cx2,Cy2<br />   Dx1,Dy1,Dx2,Dy2<br />   ......<br />   Zx1,Zy1,Zx2,Zy2<br />  x/y in xrange / yrange coordinate system</li><li>12 = Ax1,Ay1,Ax2,Ay2<br />   Bx1,By1,Bx2,By2<br />Cx1,Cy1,Cx2,Cy2<br />   Dx1,Dy1,Dx2,Dy2<br />   ......<br />   Zx1,Zy1,Zx2,Zy2<br />  x/y in pixels</li><li>13 = Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2,Cx1:Cy1:Cx2:Cy2,Dx1:Dy1:Dx2:Dy2, ... ,Zx1:Zy1:Zx2:Zy2<br />  x/y in xrange / yrange coordinate system</li><li>14 = Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2....Zx1:Zy1:Zx2:Zy2<br />  x/y in pixels</li><li>15 = reply from inputfields,textareas<br />  reply1,reply2,reply3,...,reply_n</li><li>16 = mathml input fields </li><li>17 = read "userdraw text,color" only (x1:y1:text1,x2:y2:text2...x_n:y_n:text_n</li><li>18 = read_canvas() will read all interactive clocks in H1:M1:S1,H2:M2:S2...Hn:Mn:Sn</li><li>19 = read_canvas() will return the object number of marked / clicked object (clock)<br />analogue to (shape library) onclick command </li><li>21 = (x1:y1) (x2:y2) ... (x_n:y_n)<br />verbatim coordinate return</li>22 = returns an array .... reply[0]=x1 reply[1]=y1 reply[2]=x2 reply[3]=y2 ... reply[n-1]=x_n reply[n]=y_n<br />  x/y in xrange / yrange coordinate system</li><li>replyformat 23 : can only be used for drawtype 'polyline'<br />a typical click sequence in drawtype polyline isx1,y1,x2,y2,x2,y2,x3,y3,x3,y3.....,x(n-1),y(n-1),x(n-1),y(n-1),xn,yn --replyformat 23--> x1,y1,x2,y2,x3,y3,.....x(n-1),y(n-1),xn,yn multiple occurences will be filtered out.The reply will be in x-y-range (xreply \\n yreply)</li><li>replyformat 24 = read all inputfield values: even those set 'readonly'</li><li>format 25 = angle1,angle2...angle_n : will return the radius (one or many) of the user drawn circle segment in degrees </li><li>format 26 = rad1,rad2...rad_n : will return the radius (one or many) of the user drawn circle segment in radians </li><li>27 = return (only) userdraw inputfields array: x1:y1:text1,x2:y2:text2...</li></ul>
  2925.         @ note to 'userdraw text,color' : the x / y-values are in pixels ! (this to avoid too lengthy calculations in javascript...)
  2926.         */
  2927.          reply_format = (int) get_real(infile,1);
  2928.          reply_precision = precision;
  2929.         break;
  2930.         case LEGENDCOLORS:
  2931.         /*
  2932.         @ legendcolors color1:color2:color3:...:color_n
  2933.         @ 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 />
  2934.         @ make sure the number of colours match the number of legend items
  2935.         @ command 'legend' in case of 'piechart' and 'barchart' will use these colours per default (no need to specify 'legendcolors'
  2936.         */
  2937.             if(legend_cnt == -1){canvas_error("use command \"legend\" before command \"legendcolors\" ! ");}
  2938.             temp = get_string(infile,1);
  2939.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  2940.             fprintf(js_include_file,"var legendcolors%d = [\"%s\"];",legend_cnt,temp);
  2941.             break;
  2942.         case LEGEND:
  2943.         /*
  2944.         @ legend string1:string2:string3....string_n
  2945.         @ will be used to create a legend for a graph
  2946.         @ also see command 'piechart'
  2947.         @ will use the same colors per default as used in the graphs : use command 'legendcolors' to override the default
  2948.         */
  2949.             temp = get_string(infile,1);
  2950.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  2951.             legend_cnt++; /* attention :starts with -1 : it will be used in piechart etc */
  2952.             fprintf(js_include_file,"var legend%d = [\"%s\"];",legend_cnt,temp);
  2953.             break;
  2954.         case XLABEL:
  2955.         /*
  2956.         @ xlabel some_string
  2957.         @ will be used to create a label for the x-axis (label is in quadrant I)
  2958.         @ can only be used together with command 'grid'<br />not depending on keywords 'axis' and 'axisnumbering'
  2959.         @ font setting: italic Courier, fontsize will be slightly larger (fontsize + 4)
  2960.         */
  2961.             temp = get_string(infile,1);
  2962.             fprintf(js_include_file,"var xaxislabel = \"%s\";",temp);
  2963.             break;
  2964.         case YLABEL:
  2965.         /*
  2966.         @ ylabel some_string
  2967.         @ will be used to create a (vertical) label for the y-axis (label is in quadrant I)
  2968.         @ can only be used together with command 'grid'<br />not depending on keywords 'axis' and 'axisnumbering'
  2969.         @ font setting: italic Courier, fontsize will be slightly larger (fontsize + 4)
  2970.         */
  2971.             temp = get_string(infile,1);
  2972.             fprintf(js_include_file,"var yaxislabel = \"%s\";",temp);
  2973.             break;
  2974.         case LINEGRAPH: /* scheme: var linegraph_0 = [ 'stroke_color','line_width','use_dashed' ,'dashtype0','dashtype1','x1','y1',...,'x_n','y_n'];*/
  2975.         /*
  2976.         @ linegraph x1:y1;x2:y2...x_n:y_n
  2977.         @ will plot your data in a graph
  2978.         @ may only to be used together with command 'grid'
  2979.         @ can be used together with freestyle x-axis/y-axis texts : see commands 'xaxis' and 'yaxis'
  2980.         @ use command 'legend' to provide an optional legend in right-top-corner
  2981.         @ also see command 'piechart'
  2982.         @ multiple linegraphs may be used in a single plot
  2983.         @ NOTE: your arguments are not checked by canvasdraw : use your javascript console in case of trouble...
  2984.         @ <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>
  2985.         */
  2986.             temp = get_string(infile,1);
  2987.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  2988.             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);
  2989.             linegraph_cnt++;
  2990.             reset();
  2991.             break;
  2992.         case BARCHART:
  2993.         /*
  2994.         @ barchart x_1:y_1:color_1:x_2:y_2:color_2:...x_n:y_n:color_n
  2995.         @ will be used to create a legend for bar graph
  2996.         @ may only to be used together with command 'grid'
  2997.         @ can be used together with freestyle x-axis/y-axis texts : see commands 'xaxis' and 'yaxis'
  2998.         @ use command 'legend' to provide an optional legend in right-top-corner
  2999.         @ also see command 'piechart'
  3000.         @ NOTE: your arguments are not checked by canvasdraw : use your javascript console in case of trouble...
  3001.         */
  3002.             temp = get_string(infile,1);
  3003.             if( strstr( temp,":" ) != 0 ){ temp = str_replace(temp,":","\",\""); }
  3004.             fprintf(js_include_file,"var barchart_%d = [\"%s\"];",barchart_cnt,temp);
  3005.             barchart_cnt++;
  3006.             reset();
  3007.             break;
  3008.         case CLOCK:
  3009.         /*
  3010.         @ clock x,y,r(px),H,M,S,type hourglass,interactive [ ,H_color,M_color,S_color,background_color,foreground_color ]
  3011.         @ use command 'opacity stroke-opacity,fill-opacity' to adjust foreground (stroke) and background (fill) transparency
  3012.         @ type hourglass:<br />type = 0 : only segments<br />type = 1 : only numbers<br />type = 2 : numbers and segments
  3013.         @ 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
  3014.         @ if you don't want a seconds hand (or minutes...), just make it invisible by using the background color of the hourglass...
  3015.         @ 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>
  3016.         @ canvasdraw will not check validity of colornames...the javascript console is your best friend
  3017.         @ no combinations with other reply_types allowed, for now
  3018.         @ 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
  3019.         */
  3020.             if( js_function[DRAW_CLOCK] != 1 ){ js_function[DRAW_CLOCK] = 1;}
  3021.  
  3022.         /*    var clock = function(xc,yc,radius,H,M,S,h_color,m_color,s_color,bg_color,fg_color) */
  3023.             for(i=0;i<9;i++){
  3024.              switch(i){
  3025.               case 0: int_data[0] = x2px(get_real(infile,0)); break; /* xc */
  3026.               case 1: int_data[1] = y2px(get_real(infile,0)); break; /* yc */
  3027.               case 2: int_data[2] = get_real(infile,0);break;/* radius in px */
  3028.               case 3: int_data[3] = get_real(infile,0);break;/* hours */
  3029.               case 4: int_data[4] = get_real(infile,0);break;/* minutes */
  3030.               case 5: int_data[5] = get_real(infile,0);break;/* seconds */
  3031.               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 */
  3032.               case 7: int_data[7] = (int)(get_real(infile,0));/* interactive 0,1,2*/
  3033.                 switch(int_data[7]){
  3034.                     case 0:break;
  3035.                     case 1:if(clock_cnt == 0){
  3036.                                 if( reply_format == 0 ){
  3037.                                      reply_format = 18; /* user sets clock */
  3038.                                     /* 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");
  3039.                                      check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3040.                                      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");
  3041.                                      add_to_buffer(tmp_buffer);
  3042.                                     */
  3043.                                      fprintf(js_include_file,"set_clock = function(num,type,diff){if(wims_status == \"done\"){return;};var name = eval(\"clocks\"+num);switch(type){case 1:name.H = parseInt(name.H+diff);break;case 2:name.M = parseInt(name.M+diff);break;case 3:name.S = parseInt(name.S+diff);break;default: break;};name = new clock(name.xc,name.yc,name.radius,name.H,name.M,name.S,name.type,name.interaction,name.H_color,name.M_color,name.S_color,name.bg_color,name.fg_color);};\n");
  3044.                                 }
  3045.                                 else
  3046.                                 {
  3047.                                     canvas_error("interactive clock may not be used together with other reply_types...");
  3048.                                 }
  3049.                              }
  3050.                             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);
  3051.                     break;
  3052.                     case 2:if( reply_format == 0 ){
  3053.                                 reply_format = 19; /* "onclick */
  3054.                                 fprintf(js_include_file,"\n<!-- begin onclick handler for clocks -->\nvar reply = new Array();\n\ncanvas_div.addEventListener( 'mousedown', user_click,false);\n\nfunction user_click(evt){if(evt.which == 1){var canvas_rect = clock_canvas.getBoundingClientRect();\nvar x = evt.clientX - canvas_rect.left;\nvar y = evt.clientY - canvas_rect.top;\nvar p = 0;\nvar name;\nvar t = true;\nwhile(t){try{name = eval('clocks'+p);\nif( x < name.xc + name.radius && x > name.xc - name.radius ){if( y < name.yc + name.radius && y > name.yc - name.radius ){reply[0] = p;\nname = new clock(name.xc,name.yc,name.radius,name.H,name.M,name.S,name.type,name.interaction,name.H_color,name.M_color,name.S_color,\"lightblue\",name.fg_color);\n};\n}else{clock_ctx.clearRect(name.xc-name.radius,name.yc-name.radius,name.xc+name.radius,name.yc+name.radius);\nname = new clock(name.xc,name.yc,name.radius,name.H,name.M,name.S,name.type,name.interaction,name.H_color,name.M_color,name.S_color,name.bg_color,name.fg_color);\n};\np++;\n}catch(e){t=false;\n};\n};\n};\n};\n\n<!-- end onclick handler for clocks -->\n ");
  3055.                             }
  3056.                             else
  3057.                             {
  3058.                                 if( reply_format != 19){
  3059.                                    canvas_error("clickable clock(s) may not be used together with other reply_types...");
  3060.                                  }
  3061.                             }
  3062.                      break;
  3063.                      default: canvas_error("interactive must be set 0,1 or 2");break;
  3064.                 }
  3065.                 break;
  3066.                 case 8:
  3067.                         if(clock_cnt == 0 ){ /* set opacity's just once .... it should be a argument to clock() , for now it's OK */
  3068.                             fprintf(js_include_file,"var clock_bg_opacity = %.2f;var clock_fg_opacity = %.2f;",fill_opacity,stroke_opacity);
  3069.                         }
  3070.                         temp = get_string(infile,1);
  3071.                         if( strstr( temp,",") != 0 ){ temp = str_replace(temp,",","\",\""); }
  3072.                         if( strlen(temp) < 1 ){temp = ",\"\",\"\",\"\",\"\",\"\"";}
  3073.                         string_length = snprintf(NULL,0,"var clocks%d = new clock(%d,%d,%d,%d,%d,%d,%d,%d,\"%s\");\n",clock_cnt,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],int_data[6],int_data[7],temp);
  3074.                         check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3075.                         snprintf(tmp_buffer,string_length,"var clocks%d = new clock(%d,%d,%d,%d,%d,%d,%d,%d,\"%s\");\n",clock_cnt,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],int_data[6],int_data[7],temp);
  3076.                         add_to_buffer(tmp_buffer);
  3077.                         clock_cnt++;
  3078.                         break;
  3079.                 default:break;
  3080.              }
  3081.             }
  3082.             break;
  3083.         case PIECHART:
  3084.         /*
  3085.         @ piechart xc,yc,radius,'data+colorlist'
  3086.         @ (xc : yc) center of circle diagram in xrange/yrange
  3087.         @ radius in pixels
  3088.         @ data+color list: a colon separated list of raw data and corresponding colours<br />canvasdraw will not check validity of colornames...<br />in case of trouble look into javascript debugging of your browser
  3089.         @ example data+colorlist : 132:red:23565:green:323:black:234324:orange:23434:yellow:2543:white
  3090.         @ the number of colors must match the number of data.
  3091.         @ use command "opacity 0-255,0-255" to adjust fill_opacity of colours
  3092.         @ 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.
  3093.         */
  3094.             if( js_function[DRAW_PIECHART] != 1 ){ js_function[DRAW_PIECHART] = 1;}
  3095.             for(i=0;i<5;i++){
  3096.                 switch(i){
  3097.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  3098.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  3099.                     case 2: int_data[2] = (int)(get_real(infile,1));break;/* radius*/
  3100.                     case 3: temp = get_string(infile,1);
  3101.                             if( strstr( temp, ":" ) != 0 ){ temp = str_replace(temp,":","\",\"");}
  3102.                             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);
  3103.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3104.                             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);
  3105.                             add_to_buffer(tmp_buffer);
  3106.                            break;
  3107.                     default:break;
  3108.                 }
  3109.             }
  3110.             reset();
  3111.         break;
  3112.         case STATUS:
  3113.         /*
  3114.         @status
  3115.         @keyword
  3116.         @alernative keyword: nostatus
  3117.         @used to override the effects of "status=done" in wims (answer.phtml)
  3118.         @affects inputfields / textarea's in canvasimage and all userdraw based commands
  3119.         @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'
  3120.         */
  3121.  
  3122.             fprintf(js_include_file,"\nwims_status=\"waiting\";\n");
  3123.             break;
  3124.         case XLOGBASE:
  3125.         /*
  3126.         @ xlogbase number
  3127.         @ sets the logbase number for the x-axis
  3128.         @ default value 10
  3129.         @ use together with commands xlogscale / xylogscale
  3130.         */
  3131.             fprintf(js_include_file,"xlogbase=%d;",(int)(get_real(infile,1)));
  3132.             break;
  3133.         case YLOGBASE:
  3134.         /*
  3135.         @ ylogbase number
  3136.         @ sets the logbase number for the y-axis
  3137.         @ default value 10
  3138.         @ use together with commands ylogscale / xylogscale
  3139.         */
  3140.             fprintf(js_include_file,"ylogbase=%d;",(int)(get_real(infile,1)));
  3141.             break;
  3142.         case XLOGSCALE:
  3143.         /*
  3144.          @ xlogscale ymajor,yminor,majorcolor,minorcolor
  3145.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  3146.          @ ymajor is the major step on the y-axis; yminor is the divisor for the y-step
  3147.          @ the linewidth is set using command 'linewidth int'
  3148.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  3149.          @ default logbase number = 10 ... when needed , set the logbase number with command 'xlogbase number'
  3150.          @ 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>
  3151.          @ note: the complete canvas will be used for the 'log paper'
  3152.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  3153.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  3154.          @ 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')
  3155.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  3156.          @ attention: keyword 'snaptogrid' may not lead to the desired result...
  3157.         */
  3158.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  3159.             if( js_function[DRAW_XLOGSCALE] != 1 ){ js_function[DRAW_XLOGSCALE] = 1;}
  3160.             for(i=0;i<4;i++){
  3161.                 switch(i){
  3162.                     case 0: double_data[0] = get_real(infile,0);break; /* xmajor */
  3163.                     case 1: int_data[0] = (int) (get_real(infile,0));break; /* xminor */
  3164.                     case 2: stroke_color = get_color(infile,0); break;
  3165.                     case 3: fill_color = get_color(infile,1);
  3166.                         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);
  3167.                         tmp_buffer = my_newmem(string_length+1);
  3168.                         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);
  3169.                         fprintf(js_include_file,"use_xlogscale=1;snap_y = %f;snap_x = xlogbase;",double_data[0]/int_data[0]);
  3170.                         add_to_buffer(tmp_buffer);
  3171.                         break;
  3172.                     default:break;
  3173.                 }
  3174.             }
  3175.             break;
  3176.         case YLOGSCALE:
  3177.         /*
  3178.          @ ylogscale xmajor,xminor,majorcolor,minorcolor
  3179.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  3180.          @ xmajor is the major step on the x-axis; xminor is the divisor for the x-step
  3181.          @ the linewidth is set using command 'linewidth int'
  3182.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  3183.          @ default logbase number = 10 ... when needed , set the logbase number with command 'ylogbase number'
  3184.          @ 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>
  3185.          @ note: the complete canvas will be used for the 'log paper'
  3186.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  3187.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  3188.          @ 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')
  3189.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  3190.          @ attention: keyword 'snaptogrid' may not lead to the desired result...
  3191.         */
  3192.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  3193.             if( js_function[DRAW_YLOGSCALE] != 1 ){ js_function[DRAW_YLOGSCALE] = 1;}
  3194.             for(i=0;i<4;i++){
  3195.                 switch(i){
  3196.                     case 0: double_data[0] = get_real(infile,0);break; /* xmajor */
  3197.                     case 1: int_data[0] = (int) (get_real(infile,0));break; /* xminor */
  3198.                     case 2: stroke_color = get_color(infile,0); break;
  3199.                     case 3: fill_color = get_color(infile,1);
  3200.                         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);
  3201.                         tmp_buffer = my_newmem(string_length+1);
  3202.                         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);
  3203.                         fprintf(js_include_file,"use_ylogscale=1;snap_x = %f;snap_y = ylogbase;",double_data[0]/int_data[0]);
  3204.                         add_to_buffer(tmp_buffer);
  3205.                         break;
  3206.                     default:break;
  3207.                 }
  3208.             }
  3209.             break;
  3210.         case XYLOGSCALE:
  3211.         /*
  3212.          @ xylogscale majorcolor,minorcolor
  3213.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  3214.          @ the linewidth is set using command 'linewidth int'
  3215.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  3216.          @ default logbase number = 10 ... when needed , set the logbase number with command 'xlogbase number' and/or 'ylogbase number'
  3217.          @ 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>
  3218.          @ note: the complete canvas will be used for the 'log paper'
  3219.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  3220.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  3221.          @ 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')
  3222.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  3223.          @ attention: keyword 'snaptogrid' may not lead to the desired result...
  3224.         */
  3225.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  3226.             if( js_function[DRAW_XYLOGSCALE] != 1 ){ js_function[DRAW_XYLOGSCALE] = 1;}
  3227.             for(i=0;i<2;i++){
  3228.                 switch(i){
  3229.                     case 0: stroke_color = get_color(infile,0); break;
  3230.                     case 1: fill_color = get_color(infile,1);
  3231.                         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);
  3232.                         tmp_buffer = my_newmem(string_length+1);
  3233.                         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);
  3234.                         fprintf(js_include_file,"use_xlogscale=1;use_ylogscale=1;snap_x = xlogbase;snap_y = ylogbase;");
  3235.                         add_to_buffer(tmp_buffer);
  3236.                         break;
  3237.                     default:break;
  3238.                 }
  3239.             }
  3240.         break;
  3241.         default:sync_input(infile);
  3242.         break;
  3243.     }
  3244.   }
  3245.   /* we are done parsing script file */
  3246.   /* check if xrange / yrange was set explicit ... or use xmin=0 xmax=xsize ymin=0 ymax=ysize : Quadrant I */
  3247.   if( found_size_command == 1 ){
  3248.     fprintf(js_include_file,"var xmin = 0;var xmax = %d;var ymin = 0;var ymax = %d",xsize,ysize);
  3249.   }
  3250.   else
  3251.   {
  3252.     if( found_size_command != 3 ){
  3253.      canvas_error("Please specify both xrange and yrange ...");
  3254.     }
  3255.   }
  3256.   /* if needed, add generic draw functions (grid / xml etc) to buffer : these are no draggable/clickable shapes / objects  ! */
  3257.   add_javascript_functions(js_function,canvas_root_id);
  3258.    /* add read_canvas() etc functions if needed */
  3259.   if( reply_format > 0 ){ add_read_canvas(reply_format,reply_precision);}
  3260.   if( use_pan_and_zoom == TRUE ){
  3261.   /* in case of zooming ... */
  3262.   fprintf(js_include_file,"\n<!-- some extra global stuff : need to rethink panning and zooming !!! -->\n\
  3263.  precision = %d;var xmin_start=xmin;var xmax_start=xmax;\
  3264.  var ymin_start=ymin;var ymax_start=xmax;\
  3265.  var zoom_x_increment=0;var zoom_y_increment=0;\
  3266.  var pan_x_increment=0;var pan_y_increment=0;\
  3267.  if(use_ylogscale == 0 ){\
  3268.   zoom_x_increment = (xmax - xmin)/20;zoom_y_increment = (ymax - ymin)/20;pan_x_increment = (xmax - xmin)/20;pan_y_increment = (ymax - ymin)/20;\
  3269.  }else{\
  3270.   zoom_x_increment = (xmax - xmin)/20;\
  3271.   pan_x_increment = (xmax - xmin)/20;\
  3272.  };\
  3273.  function start_canvas%d(type){\
  3274.   switch(type){\
  3275.    case 0:xmin = xmin + zoom_x_increment;ymin = ymin + zoom_y_increment;xmax = xmax - zoom_x_increment;ymax = ymax - zoom_y_increment;break;\
  3276.    case 1:xmin = xmin - zoom_x_increment;ymin = ymin - zoom_y_increment;xmax = xmax + zoom_x_increment;ymax = ymax + zoom_y_increment;break;\
  3277.    case 2:xmin = xmin - pan_x_increment;ymin = ymin ;xmax = xmax - pan_x_increment;ymax = ymax;break;\
  3278.    case 3:xmin = xmin + pan_x_increment;ymin = ymin ;xmax = xmax + pan_x_increment;ymax = ymax;break;\
  3279.    case 4:xmin = xmin;ymin = ymin - pan_y_increment ;xmax = xmax;ymax = ymax - pan_y_increment;break;\
  3280.    case 5:xmin = xmin;ymin = ymin + pan_y_increment ;xmax = xmax;ymax = ymax + pan_y_increment;break;\
  3281.    case 6:location.reload();break;\
  3282.    default:break;\
  3283.   };\
  3284.   if(xmax<=xmin){xmin=xmin_start;xmax=xmax_start;};\
  3285.   if(ymax<=ymin){ymin=ymin_start;ymax=ymax_start;};\
  3286.   try{dragstuff.Zoom(xmin,xmax,ymin,ymax);}catch(e){}\
  3287.   %s\
  3288.  };\
  3289.  start_canvas%d(333);\
  3290. };\n\
  3291. <!-- end wims_canvas_function -->\n\
  3292. wims_canvas_function%d();\n",precision,canvas_root_id,buffer,canvas_root_id,canvas_root_id);
  3293.   }
  3294.   else
  3295.   {
  3296.   /* no zoom, just add buffer */
  3297.   fprintf(js_include_file,"\n<!-- add buffer -->\n\
  3298.  %s\
  3299. };\n\
  3300. <!-- end wims_canvas_function -->\n\
  3301. wims_canvas_function%d();\n",buffer,canvas_root_id);
  3302.   }
  3303. /* done writing the javascript include file */
  3304. fclose(js_include_file);
  3305.  
  3306. }
  3307.  
  3308. /* if using a tooltip, this should always be printed to the *.phtml file, so stdout */
  3309. if(use_tooltip == TRUE){
  3310.   add_js_tooltip(canvas_root_id,tooltip_text,bgcolor,xsize,ysize);
  3311. }
  3312. exit(EXIT_SUCCESS);
  3313. }
  3314. /* end main() */
  3315.  
  3316. /******************************************************************************
  3317. **
  3318. **  sync_input
  3319. **
  3320. **  synchronises input line - reads to end of line, leaving file pointer
  3321. **  at first character of next line.
  3322. **
  3323. **  Used by:
  3324. **  main program - error handling.
  3325. **
  3326. ******************************************************************************/
  3327. void sync_input(FILE *infile)
  3328. {
  3329.         int c = 0;
  3330.  
  3331.         if( c == '\n' || c == ';' ) return;
  3332.         while( ( (c=getc(infile)) != EOF ) && (c != '\n') && (c != '\r') && (c != ';')) ;
  3333.         if( c == EOF ) finished = 1;
  3334.         if( c == '\n' || c == '\r' || c == ';') line_number++;
  3335.         return;
  3336. }
  3337.  
  3338. /******************************************************************************/
  3339.  
  3340. char *str_replace(const char *str, const char *old, const char *new){
  3341. /* http://creativeandcritical.net/str-replace-c/ */
  3342.     if(strlen(str) > MAX_BUFFER){canvas_error("string argument too big");}
  3343.     char *ret, *r;
  3344.     const char *p, *q;
  3345.     size_t oldlen = strlen(old);
  3346.     size_t count = 0;
  3347.     size_t retlen = 0;
  3348.     size_t newlen = strlen(new);
  3349.     if (oldlen != newlen){
  3350.         for (count = 0, p = str; (q = strstr(p, old)) != NULL; p = q + oldlen){
  3351.             count++;
  3352.             retlen = p - str + strlen(p) + count * (newlen - oldlen);
  3353.         }
  3354.     }
  3355.     else
  3356.     {
  3357.         retlen = strlen(str);
  3358.     }
  3359.  
  3360.     if ((ret = malloc(retlen + 1)) == NULL){
  3361.         ret = NULL;
  3362.         canvas_error("string argument is NULL");
  3363.     }
  3364.     else
  3365.     {
  3366.         for (r = ret, p = str; (q = strstr(p, old)) != NULL; p = q + oldlen) {
  3367.             size_t l = q - p;
  3368.             memcpy(r, p, l);
  3369.             r += l;
  3370.             memcpy(r, new, newlen);
  3371.             r += newlen;
  3372.         }
  3373.         strcpy(r, p);
  3374.     }
  3375.     return ret;
  3376. }
  3377.  
  3378. /******************************************************************************/
  3379.  
  3380. char *get_color(FILE *infile , int last){
  3381.     int c,i = 0,is_hex = 0;
  3382.     char temp[MAX_COLOR_STRING], *string;
  3383.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') && ( c != ',' ) && ( c != ';' ) ){
  3384.         if( i > MAX_COLOR_STRING ){ canvas_error("colour string is too big ... ? ");}
  3385.         if( c == '#' ){
  3386.             is_hex = 1;
  3387.         }
  3388.         if( c != ' '){
  3389.             temp[i]=tolower(c);
  3390.             i++;
  3391.         }
  3392.     }
  3393.     if( ( c == '\n' || c == EOF || c == ';' ) && last == 0){canvas_error("expecting more arguments in command");}
  3394.     if( c == '\n' || c == ';' ){ done = TRUE; line_number++; }
  3395.     if( c == EOF ){finished = 1;}
  3396.     if( finished == 1 && last != 1 ){ canvas_error("expected more arguments");}
  3397.     temp[i]='\0';
  3398.     if( strlen(temp) == 0 ){ canvas_error("expected a colorname or hexnumber, but found nothing !!");}
  3399.     if( is_hex == 1 ){
  3400.         char red[3], green[3], blue[3];
  3401.         red[0]   = toupper(temp[1]); red[1]   = toupper(temp[2]); red[2]   = '\0';
  3402.         green[0] = toupper(temp[3]); green[1] = toupper(temp[4]); green[2] = '\0';
  3403.         blue[0]  = toupper(temp[5]); blue[1]  = toupper(temp[6]); blue[2]  = '\0';
  3404.         int r = (int) strtol(red,   NULL, 16);
  3405.         int g = (int) strtol(green, NULL, 16);
  3406.         int b = (int) strtol(blue,  NULL, 16);
  3407.         string = (char *)my_newmem(12);
  3408.         snprintf(string,11,"%d,%d,%d",r,g,b);
  3409.         return string;
  3410.     }
  3411.     else
  3412.     {
  3413.         string = (char *)my_newmem(sizeof(temp));
  3414.         snprintf(string,sizeof(temp),"%s",temp);
  3415.         for( i = 0; i <= NUMBER_OF_COLORNAMES ; i++ ){
  3416.             if( strcmp( colors[i].name , string ) == 0 ){
  3417.                 return colors[i].rgb;
  3418.             }
  3419.         }
  3420.     }
  3421.     /* not found...return error */
  3422.     free(string);string = NULL;
  3423.     canvas_error("I was expecting a color name or hexnumber...but found nothing.");
  3424.     return NULL;
  3425. }
  3426.  
  3427. char *get_string(FILE *infile,int last){ /* last = 0 : more arguments ; last=1 final argument */
  3428.     int c,i=0;
  3429.     char  temp[MAX_BUFFER], *string;
  3430.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') ){
  3431.         temp[i]=c;
  3432.         i++;
  3433.         if(i > MAX_BUFFER){ canvas_error("string size too big...repeat command to fit string");break;}
  3434.     }
  3435.     if( ( c == '\n' || c == EOF ) && last == 0){canvas_error("expecting more arguments in command");}
  3436.     if( c == '\n') { done = TRUE; line_number++; }
  3437.     if( c == EOF ) {
  3438.         finished = 1;
  3439.         if( last != 1 ){ canvas_error("expected more arguments");}
  3440.     }
  3441.     temp[i]='\0';
  3442.     if( strlen(temp) == 0 ){ canvas_error("expected a word or string, but found nothing !!");}
  3443.     string=(char *)my_newmem(strlen(temp));
  3444.     snprintf(string,sizeof(temp),"%s",temp);
  3445.     return string;
  3446. }
  3447.  
  3448. char *get_string_argument(FILE *infile,int last){  /* last = 0 : more arguments ; last=1 final argument */
  3449.     int c,i=0;
  3450.     char temp[MAX_BUFFER], *string;
  3451.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') && ( c != ',')){
  3452.         temp[i]=c;
  3453.         i++;
  3454.         if(i > MAX_BUFFER){ canvas_error("string size too big...will cut it off");break;}
  3455.     }
  3456.     if( ( c == '\n' || c == EOF) && last == 0){canvas_error("expecting more arguments in command");}
  3457.     if( c == '\n') { line_number++; }
  3458.     if( c == EOF ) {finished = 1;}
  3459.     if( finished == 1 && last != 1 ){ canvas_error("expected more arguments");}
  3460.     temp[i]='\0';
  3461.     if( strlen(temp) == 0 ){ canvas_error("expected a word or string (without comma) , but found nothing !!");}
  3462.     string=(char *)my_newmem(sizeof(temp));
  3463.     snprintf(string,sizeof(temp),"%s",temp);
  3464.     done = TRUE;
  3465.     return string;
  3466. }
  3467.  
  3468. double get_real(FILE *infile, int last){ /* accept anything that looks like an number ?  last = 0 : more arguments ; last=1 final argument */
  3469.     int c,i=0,found_calc = 0;
  3470.     double y;
  3471.     char tmp[MAX_INT];
  3472.     while(( (c=getc(infile)) != EOF ) && ( c != ',') && (c != '\n') && ( c != ';')){
  3473.      if( c != ' ' ){
  3474.      /*
  3475.      libmatheval will segfault when for example: "xrange -10,+10" or "xrange -10,10+" is used
  3476.      We will check after assert() if it's a NULL pointer...and exit program via :
  3477.      canvas_error("I'm having trouble parsing your \"expression\" ");
  3478.      */
  3479.       if( i == 0 &&  c == '+' ){
  3480.        continue;
  3481.       }
  3482.       else
  3483.       {
  3484.        if(canvas_iscalculation(c) != 0){
  3485.         found_calc = 1;
  3486.         c = tolower(c);
  3487.        }
  3488.        tmp[i] = c;
  3489.        i++;
  3490.       }
  3491.      }
  3492.      if( i > MAX_INT - 1){canvas_error("number too large");}
  3493.     }
  3494.     if( ( c == '\n' || c == EOF || c == ';' ) && last == 0){canvas_error("expecting more arguments in command");}
  3495.     if( c == '\n' || c == ';' ){ done = TRUE; line_number++; }
  3496.     if( c == EOF ){done = TRUE ; finished = 1;}
  3497.     tmp[i]='\0';
  3498.     if( strlen(tmp) == 0 ){canvas_error("expected a number , but found nothing !!");}
  3499.     if( found_calc == 1 ){ /* use libmatheval to calculate 2*pi/3 */
  3500.      void *f = eval_create(tmp);
  3501.      assert(f);if( f == NULL ){canvas_error("I'm having trouble parsing your \"expression\" ") ;}
  3502.      y = eval_x(f, 1);
  3503.      /* if function is bogus; y = 1 : so no core dumps */
  3504.      eval_destroy(f);
  3505.     }
  3506.     else
  3507.     {
  3508.      y = atof(tmp);
  3509.     }
  3510.     return y;
  3511. }
  3512. void canvas_error(char *msg){
  3513.     fprintf(stdout,"\n</script><hr /><span style=\"color:red\">FATAL syntax error:line %d : %s</span><hr />",line_number-1,msg);
  3514.     finished = 1;
  3515.     exit(EXIT_SUCCESS);
  3516. }
  3517.  
  3518.  
  3519. /* convert x/y coordinates to pixel */
  3520. int x2px(double x){
  3521.  return x*xsize/(xmax - xmin) -  xsize*xmin/(xmax - xmin);
  3522. }
  3523.  
  3524. int y2px(double y){
  3525.  return -1*y*ysize/(ymax - ymin) + ymax*ysize/(ymax - ymin);
  3526. }
  3527.  
  3528. double px2x(int x){
  3529.  return (x*(xmax - xmin)/xsize + xmin);
  3530. }
  3531. double px2y(int y){
  3532.  return (y*(ymax - ymin)/ysize + ymin);
  3533. }
  3534.  
  3535. void add_to_buffer(char *tmp){
  3536.  if( tmp == NULL || tmp == 0 ){ canvas_error("nothing to add_to_buffer()...");}
  3537.  /*  do we have enough space left in buffer[MAX_BUFFER] ? */
  3538.  int space_left = (int) (sizeof(buffer) - strlen(buffer));
  3539.  if( space_left > strlen(tmp)){
  3540.   strncat(buffer,tmp,space_left - 1);/* add safely "tmp" to the string buffer */
  3541.  }
  3542.  else
  3543.  {
  3544.   canvas_error("buffer is too big\n");
  3545.  }
  3546.  tmp = NULL;free(tmp);
  3547.  return;
  3548. }
  3549.  
  3550. void reset(){
  3551.  if(use_filled == TRUE){use_filled = FALSE;}
  3552.  if(use_dashed == TRUE){use_dashed = FALSE;}
  3553.  if(use_rotate == TRUE){use_rotate = FALSE;}
  3554.    onclick = 0;
  3555. }
  3556.  
  3557.  
  3558.  
  3559. /* What reply format in read_canvas();
  3560.  
  3561. note:if userdraw is combined with inputfields...every "userdraw" based answer will append "\n" and  inputfield.value()
  3562. 1 = x1,x2,x3,x4....x_n
  3563.     y1,y2,y3,y4....y_n
  3564.  
  3565.     x/y in pixels
  3566.  
  3567. 2 = x1,x2,x3,x4....x_n
  3568.     y1,y2,y3,y4....y_n
  3569.     x/y in  xrange / yrange coordinate system
  3570.  
  3571. 3 = x1,x2,x3,x4....x_n
  3572.     y1,y2,y3,y4....y_n
  3573.     r1,r2,r3,r4....r_n
  3574.  
  3575.     x/y in pixels
  3576.     r in pixels
  3577.  
  3578. 4 = x1,x2,x3,x4....x_n
  3579.     y1,y2,y3,y4....y_n
  3580.     r1,r2,r3,r4....r_n
  3581.  
  3582.     x/y in  xrange / yrange coordinate system
  3583.     r in pixels
  3584.  
  3585. 5 = Ax1,Ax2,Ax3,Ax4....Ax_n
  3586.     Ay1,Ay2,Ay3,Ay4....Ay_n
  3587.     Bx1,Bx2,Bx3,Bx4....Bx_n
  3588.     By1,By2,By3,By4....By_n
  3589.     Cx1,Cx2,Cx3,Cx4....Cx_n
  3590.     Cy1,Cy2,Cy3,Cy4....Cy_n
  3591.     ....
  3592.     Zx1,Zx2,Zx3,Zx4....Zx_n
  3593.     Zy1,Zy2,Zy3,Zy4....Zy_n
  3594.  
  3595.     x/y in pixels
  3596.  
  3597. 6 = Ax1,Ax2,Ax3,Ax4....Ax_n
  3598.     Ay1,Ay2,Ay3,Ay4....Ay_n
  3599.     Bx1,Bx2,Bx3,Bx4....Bx_n
  3600.     By1,By2,By3,By4....By_n
  3601.     Cx1,Cx2,Cx3,Cx4....Cx_n
  3602.     Cy1,Cy2,Cy3,Cy4....Cy_n
  3603.     ....
  3604.     Zx1,Zx2,Zx3,Zx4....Zx_n
  3605.     Zy1,Zy2,Zy3,Zy4....Zy_n
  3606.  
  3607.     x/y in  xrange / yrange coordinate system
  3608.  
  3609. 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n
  3610.  
  3611.     x/y in pixels
  3612.  
  3613. 8 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n
  3614.  
  3615.     x/y in  xrange / yrange coordinate system
  3616.  
  3617. 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n
  3618.  
  3619.     x/y in pixels
  3620.  
  3621. 10 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n
  3622.  
  3623.     x/y in  xrange / yrange coordinate system
  3624.  
  3625. 11 = Ax1,Ay1,Ax2,Ay2
  3626.      Bx1,By1,Bx2,By2
  3627.      Cx1,Cy1,Cx2,Cy2
  3628.      Dx1,Dy1,Dx2,Dy2
  3629.      ......
  3630.      Zx1,Zy1,Zx2,Zy2
  3631.  
  3632.     x/y in  xrange / yrange coordinate system
  3633.  
  3634. 12 = Ax1,Ay1,Ax2,Ay2
  3635.      Bx1,By1,Bx2,By2
  3636.      Cx1,Cy1,Cx2,Cy2
  3637.      Dx1,Dy1,Dx2,Dy2
  3638.      ......
  3639.      Zx1,Zy1,Zx2,Zy2
  3640.  
  3641.     x/y in pixels
  3642.  
  3643. 13 = Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2,Cx1:Cy1:Cx2:Cy2,Dx1:Dy1:Dx2:Dy2, ... ,Zx1:Zy1:Zx2:Zy2
  3644.  
  3645.     x/y in  xrange / yrange coordinate system
  3646. 14 = Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2....Zx1:Zy1:Zx2:Zy2
  3647.     x/y in pixels
  3648. 15 = reply from inputfields,textareas
  3649.     reply1,reply2,reply3,...,reply_n
  3650.     only fields set write (a.g. will not read 'readonly' inputfield values'
  3651.  
  3652. 16 = read mathml inputfields only
  3653.  
  3654. 17 = read userdraw text only (x1:y1:text1,x2:y2:text2...x_n:y_n:text_n
  3655.  when ready : calculate size_t of string via snprintf(NULL,0,"blah blah...");
  3656.  
  3657. 18 = read clock(s) : H1:M1:S1,H2:M2:S2,...H_n:M_n:S_n
  3658. 19 = return clicked object number (analogue to shape-library onclick)
  3659. 20 = return x/y-data in x-range/y-range of all 'draggable' images
  3660. 21 = return verbatim coordinates (x1:y1) (x2:y2)...(x_n:y_n)
  3661. 22 = array : x1,y1,x2,y2,x3,y3,x4,y4...x_n,y_n
  3662.     x/y in  xrange / yrange coordinate system
  3663. 23 = answertype for a polyline : remove multiple occurences  due to reclick on a point to create next polyline segment
  3664. 24 = read all inputfield values: even those set 'readonly'
  3665. 25 = return all userdrawn arcs in degrees:
  3666. 26 = return all userdrawn arcs in radians:
  3667. 27 = return (only) userdraw inputfields array: x1:y1:text1,x2:y2:text2...
  3668. */
  3669.  
  3670.  
  3671. void add_read_canvas(int type_reply,int reply_precision){
  3672. /* just 1 reply type allowed */
  3673. fprintf(js_include_file,"\
  3674. \n<!-- begin set_reply_precision() -->\n\
  3675. function set_reply_precision(){\
  3676. var len = userdraw_x.length;\
  3677. var prec = %d;\
  3678. for(var p = 0 ; p < len ; p++ ){\
  3679.  userdraw_x[p] = (Math.round(prec*userdraw_x[p]))/prec;\
  3680.  userdraw_y[p] = (Math.round(prec*userdraw_y[p]))/prec;\
  3681. };\
  3682. len = userdraw_radius.length;\
  3683. if( len > 0 ){\
  3684.  for(var p = 0 ; p < len ; p++ ){\
  3685.   userdraw_radius[p] = (Math.round(prec*userdraw_radius[p]))/prec;\
  3686.  };\
  3687. };\
  3688. };",reply_precision);
  3689.  
  3690. switch(type_reply){
  3691. /*
  3692. answers may have:
  3693. x-values,y-values,r-values,input-fields,mathml-inputfields,text-typed answers
  3694. */
  3695.     case 1: fprintf(js_include_file,"\
  3696. \n<!-- begin function 1 read_canvas() -->\n\
  3697. read_canvas = function(){\
  3698. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3699. set_reply_precision();\
  3700. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3701.  var p = 0;var input_reply = new Array();\
  3702.  if( document.getElementById(\"canvas_input0\")){\
  3703.   var t = 0;\
  3704.   while(document.getElementById(\"canvas_input\"+t)){\
  3705.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3706.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3707.     p++;\
  3708.    };\
  3709.    t++;\
  3710.   };\
  3711.  };\
  3712.  if( typeof userdraw_text != 'undefined' ){\
  3713.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+input_reply + \"\\n\"+userdraw_text;\
  3714.  }\
  3715.  else\
  3716.  {\
  3717.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+input_reply;\
  3718.  }\
  3719. }\
  3720. else\
  3721. {\
  3722.  if( typeof userdraw_text != 'undefined' ){\
  3723.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_text;\
  3724.  }\
  3725.  else\
  3726.  {\
  3727.   return userdraw_x+\"\\n\"+userdraw_y;\
  3728.  }\
  3729. };\
  3730. };\n\
  3731. <!-- end function 1 read_canvas() -->");
  3732.     break;
  3733.     case 2: fprintf(js_include_file,"\
  3734. \n<!-- begin function 2 read_canvas() -->\n\
  3735. read_canvas = function(){\
  3736. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3737. set_reply_precision();\
  3738. var reply_x = new Array();var reply_y = new Array();var p = 0;\
  3739. var prec = %d;\
  3740. while(userdraw_x[p]){\
  3741.  reply_x[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec;\
  3742.  reply_y[p] = (Math.round(prec*(px2y(userdraw_y[p]))))/prec;\
  3743.  p++;\
  3744. };\
  3745. if(p == 0){alert(\"nothing drawn...\");return;};\
  3746. if( document.getElementById(\"canvas_input0\")){\
  3747.  var p = 0;var input_reply = new Array();\
  3748.  if( document.getElementById(\"canvas_input0\")){\
  3749.   var t = 0;\
  3750.   while(document.getElementById(\"canvas_input\"+t)){\
  3751.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3752.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3753.     p++;\
  3754.    };\
  3755.    t++;\
  3756.   };\
  3757.  };\
  3758.  if( typeof userdraw_text != 'undefined' ){\
  3759.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3760.  }\
  3761.  else\
  3762.  {\
  3763.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply;\
  3764.  }\
  3765. }\
  3766. else\
  3767. {\
  3768.  if( typeof userdraw_text != 'undefined' ){\
  3769.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_text;\
  3770.  }\
  3771.  else\
  3772.  {\
  3773.   return reply_x+\"\\n\"+reply_y;\
  3774.  };\
  3775. };\
  3776. };\n\
  3777. <!-- end function 2 read_canvas() -->",reply_precision);
  3778.     break;
  3779.     case 3: fprintf(js_include_file,"\
  3780. \n<!-- begin function 3 read_canvas() -->\n\
  3781. read_canvas = function(){\
  3782. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3783. set_reply_precision();\
  3784. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3785.  var p = 0;var input_reply = new Array();\
  3786.  if( document.getElementById(\"canvas_input0\")){\
  3787.   var t = 0;\
  3788.   while(document.getElementById(\"canvas_input\"+t)){\
  3789.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3790.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3791.     p++;\
  3792.    };\
  3793.    t++;\
  3794.   };\
  3795.  };\
  3796.  if( typeof userdraw_text != 'undefined' ){\
  3797.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3798.  }\
  3799.  else\
  3800.  {\
  3801.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+input_reply;\
  3802.  }\
  3803. }\
  3804. else\
  3805. {\
  3806.  if( typeof userdraw_text != 'undefined' ){\
  3807.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+userdrawW_text;\
  3808.  }\
  3809.  else\
  3810.  {\
  3811.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius;\
  3812.  }\
  3813. }\
  3814. };\n\
  3815. <!-- end function 3 read_canvas() -->");
  3816.     break;
  3817.     case 4: fprintf(js_include_file,"\
  3818. \n<!-- begin function 4 read_canvas() -->\n\
  3819. read_canvas = function(){\
  3820. var prec = %d;\
  3821. var reply_x = new Array();var reply_y = new Array();var p = 0;\
  3822. while(userdraw_x[p]){\
  3823.  reply_x[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec;\
  3824.  reply_y[p] = (Math.round(prec*(px2y(userdraw_y[p]))))/prec;;\
  3825.  p++;\
  3826. };\
  3827. if(p == 0){alert(\"nothing drawn...\");return;};\
  3828. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3829.  var p = 0;var input_reply = new Array();\
  3830.  if( document.getElementById(\"canvas_input0\")){\
  3831.   var t = 0;\
  3832.   while(document.getElementById(\"canvas_input\"+t)){\
  3833.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3834.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3835.     p++;\
  3836.    };\
  3837.    t++;\
  3838.   };\
  3839.  };\
  3840.  if( typeof userdraw_text != 'undefined' ){\
  3841.   return reply_x+\"\\n\"+reply_y +\"\\n\"+userdraw_radius+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3842.  }\
  3843.  else\
  3844.  {\
  3845.   return reply_x+\"\\n\"+reply_y +\"\\n\"+userdraw_radius+\"\\n\"+input_reply;\
  3846.  }\
  3847. }\
  3848. else\
  3849. {\
  3850.  if( typeof userdraw_text != 'undefined' ){\
  3851.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_radius+\"\\n\"+userdraw_text;\
  3852.  }\
  3853.  else\
  3854.  {\
  3855.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_radius;\
  3856.  }\
  3857. };\
  3858. };\n\
  3859. <!-- end function 4 read_canvas() -->",reply_precision);
  3860.     break;
  3861.     /*
  3862.         attention: we reset userdraw_x / userdraw_y  : because  userdraw_x = [][] userdraw_y = [][]
  3863.         used for userdraw multiple paths
  3864.     */
  3865.     case 5: fprintf(js_include_file,"\
  3866. \n<!-- begin function 5 read_canvas() -->\n\
  3867. read_canvas = function(){\
  3868. set_reply_precision();\
  3869. var p = 0;\
  3870. var reply = \"\";\
  3871. for(p = 0; p < userdraw_x.length;p++){\
  3872.  if(userdraw_x[p] != null ){\
  3873.   reply = reply + userdraw_x[p]+\"\\n\"+userdraw_y[p]+\"\\n\";\
  3874.  };\
  3875. };\
  3876. if(p == 0){alert(\"nothing drawn...\");return;};\
  3877. userdraw_x = [];userdraw_y = [];\
  3878. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3879.  var p = 0;var input_reply = new Array();\
  3880.  if( document.getElementById(\"canvas_input0\")){\
  3881.   var t = 0;\
  3882.   while(document.getElementById(\"canvas_input\"+t)){\
  3883.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3884.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3885.     p++;\
  3886.    };\
  3887.    t++;\
  3888.   };\
  3889.  };\
  3890.  if( typeof userdraw_text != 'undefined' ){\
  3891.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3892.  }\
  3893.  else\
  3894.  {\
  3895.   return reply +\"\\n\"+input_reply;\
  3896.  }\
  3897. }\
  3898. else\
  3899. {\
  3900.  if( typeof userdraw_text != 'undefined' ){\
  3901.   return reply+\"\\n\"+userdraw_text;\
  3902.  }\
  3903.  else\
  3904.  {\
  3905.   return reply;\
  3906.  }\
  3907. };\
  3908. };\n\
  3909. <!-- end function 5 read_canvas() -->");
  3910.     break;
  3911.     /*
  3912.         attention: we reset userdraw_x / userdraw_y  : because  userdraw_x = [][] userdraw_y = [][]
  3913.         used for userdraw multiple paths
  3914.     */
  3915.     case 6: fprintf(js_include_file,"\
  3916. \n<!-- begin function 6 read_canvas() -->\n\
  3917. read_canvas = function(){\
  3918. var p = 0;\
  3919. var reply = \"\";\
  3920. var tmp_x = new Array();\
  3921. var tmp_y = new Array();\
  3922. var prec = %d;\
  3923. for(p = 0 ; p < userdraw_x.length; p++){\
  3924.  tmp_x = userdraw_x[p];\
  3925.  tmp_y = userdraw_y[p];\
  3926.  if(tmp_x != null){\
  3927.   for(var i = 0 ; i < tmp_x.length ; i++){\
  3928.    tmp_x[i] = (Math.round(prec*(px2x(tmp_x[i]))))/prec;\
  3929.    tmp_y[i] = (Math.round(prec*(px2y(tmp_y[i]))))/prec;\
  3930.   };\
  3931.   reply = reply + tmp_x + \"\\n\" + tmp_y +\"\\n\";\
  3932.  };\
  3933. };\
  3934. if(p == 0){alert(\"nothing drawn...\");return;};\
  3935. userdraw_x = [];userdraw_y = [];\
  3936. if( document.getElementById(\"canvas_input0\") ){\
  3937.  var p = 0;var input_reply = new Array();\
  3938.  if( document.getElementById(\"canvas_input0\")){\
  3939.   var t = 0;\
  3940.   while(document.getElementById(\"canvas_input\"+t)){\
  3941.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3942.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3943.     p++;\
  3944.    };\
  3945.    t++;\
  3946.   };\
  3947.  };\
  3948.  if( typeof userdraw_text != 'undefined' ){\
  3949.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3950.  }\
  3951.  else\
  3952.  {\
  3953.   return reply +\"\\n\"+input_reply;\
  3954.  }\
  3955. }\
  3956. else\
  3957. {\
  3958.  if( typeof userdraw_text != 'undefined' ){\
  3959.   return reply +\"\\n\"+userdraw_text;\
  3960.  }\
  3961.  else\
  3962.  {\
  3963.   return reply;\
  3964.  }\
  3965. };\
  3966. };\n\
  3967. <!-- end function 6 read_canvas() -->",reply_precision);
  3968.     break;
  3969.     case 7: fprintf(js_include_file,"\
  3970. \n<!-- begin function 7 read_canvas() -->\n\
  3971. read_canvas = function(){\
  3972. set_reply_precision();\
  3973. var reply = new Array();\
  3974. var p = 0;\
  3975. while(userdraw_x[p]){\
  3976.  reply[p] = userdraw_x[p] +\":\" + userdraw_y[p];\
  3977.  p++;\
  3978. };\
  3979. if(p == 0){alert(\"nothing drawn...\");return;};\
  3980. if( document.getElementById(\"canvas_input0\") ){\
  3981.  var p = 0;var input_reply = new Array();\
  3982.  if( document.getElementById(\"canvas_input0\")){\
  3983.   var t = 0;\
  3984.   while(document.getElementById(\"canvas_input\"+t)){\
  3985.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3986.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3987.     p++;\
  3988.    };\
  3989.    t++;\
  3990.   };\
  3991.  };\
  3992.  if( typeof userdraw_text != 'undefined' ){\
  3993.   return reply+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3994.  }\
  3995.  else\
  3996.  {\
  3997.   return reply+\"\\n\"+input_reply;\
  3998.  }\
  3999. }\
  4000. else\
  4001. {\
  4002.  if( typeof userdraw_text != 'undefined' ){\
  4003.   return reply+\"\\n\"+userdraw_text;\
  4004.  }\
  4005.  else\
  4006.  {\
  4007.   return reply;\
  4008.  }\
  4009. };\
  4010. };\n\
  4011. <!-- end function 7 read_canvas() -->");
  4012.     break;
  4013.     case 8: fprintf(js_include_file,"\
  4014. \n<!-- begin function 8 read_canvas() -->\n\
  4015. read_canvas = function(){\
  4016. var reply = new Array();\
  4017. var p = 0;\
  4018. var prec = %d;\
  4019. while(userdraw_x[p]){\
  4020.  reply[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec +\":\" + (Math.round(prec*(px2y(userdraw_y[p]))))/prec;\
  4021.  p++;\
  4022. };\
  4023. if(p == 0){alert(\"nothing drawn...\");return;};\
  4024. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  4025.  var p = 0;var input_reply = new Array();\
  4026.  if( document.getElementById(\"canvas_input0\")){\
  4027.   var t = 0;\
  4028.   while(document.getElementById(\"canvas_input\"+t)){\
  4029.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4030.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4031.     p++;\
  4032.    };\
  4033.    t++;\
  4034.   };\
  4035.  };\
  4036.  if( typeof userdraw_text != 'undefined' ){\
  4037.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4038.  }\
  4039.  else\
  4040.  {\
  4041.   return reply +\"\\n\"+input_reply;\
  4042.  }\
  4043. }\
  4044. else\
  4045. {\
  4046.  if( typeof userdraw_text != 'undefined' ){\
  4047.   return reply +\"\\n\"+userdraw_text;\
  4048.  }\
  4049.  else\
  4050.  {\
  4051.   return reply;\
  4052.  }\
  4053. };\
  4054. };\n\
  4055. <!-- end function 8 read_canvas() -->",reply_precision);
  4056.     break;
  4057.     case 9: fprintf(js_include_file,"\
  4058. \n<!-- begin function 9 read_canvas() -->\n\
  4059. read_canvas = function(){\
  4060. set_reply_precision();\
  4061. var reply = new Array();\
  4062. var p = 0;\
  4063. while(userdraw_x[p]){\
  4064.  reply[p] = userdraw_x[p] +\":\" + userdraw_y[p] + \":\" + userdraw_radius[p];\
  4065.  p++;\
  4066. };\
  4067. if(p == 0){alert(\"nothing drawn...\");return;};\
  4068. if( document.getElementById(\"canvas_input0\") ){\
  4069.  var p = 0;var input_reply = new Array();\
  4070.  if( document.getElementById(\"canvas_input0\")){\
  4071.   var t = 0;\
  4072.   while(document.getElementById(\"canvas_input\"+t)){\
  4073.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4074.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4075.     p++;\
  4076.    };\
  4077.    t++;\
  4078.   };\
  4079.  };\
  4080.  if( typeof userdraw_text != 'undefined' ){\
  4081.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4082.  }\
  4083.  else\
  4084.  {\
  4085.   return reply +\"\\n\"+input_reply;\
  4086.  }\
  4087. }\
  4088. else\
  4089. {\
  4090.  if( typeof userdraw_text != 'undefined' ){\
  4091.   return reply +\"\\n\"+userdraw_text;\
  4092.  }\
  4093.  else\
  4094.  {\
  4095.   return reply;\
  4096.  }\
  4097. };\
  4098. };\n\
  4099. <!-- end function 9 read_canvas() -->");
  4100.     break;
  4101.     case 10: fprintf(js_include_file,"\
  4102. \n<!-- begin function 10 read_canvas() -->\n\
  4103. read_canvas = function(){\
  4104. var reply = new Array();\
  4105. var p = 0;\
  4106. var prec = %d;\
  4107. while(userdraw_x[p]){\
  4108.  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;\
  4109.  p++;\
  4110. };\
  4111. if(p == 0){alert(\"nothing drawn...\");return;};\
  4112. if( document.getElementById(\"canvas_input0\") ){\
  4113.  var p = 0;var input_reply = new Array();\
  4114.  if( document.getElementById(\"canvas_input0\")){\
  4115.   var t = 0;\
  4116.   while(document.getElementById(\"canvas_input\"+t)){\
  4117.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4118.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4119.     p++;\
  4120.    };\
  4121.    t++;\
  4122.   };\
  4123.  };\
  4124.  if( typeof userdraw_text != 'undefined' ){\
  4125.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4126.  }\
  4127.  else\
  4128.  {\
  4129.   return reply +\"\\n\"+input_reply;\
  4130.  }\
  4131. }\
  4132. else\
  4133. {\
  4134.  if( typeof userdraw_text != 'undefined' ){\
  4135.   return reply +\"\\n\"+userdraw_text;\
  4136.  }\
  4137.  else\
  4138.  {\
  4139.   return reply;\
  4140.  }\
  4141. };\
  4142. };\n\
  4143. <!-- end function 10 read_canvas() -->",reply_precision);
  4144.     break;
  4145.     case 11: fprintf(js_include_file,"\
  4146. \n<!-- begin function 11 read_canvas() -->\n\
  4147. read_canvas = function(){\
  4148. var reply = \"\";\
  4149. var p = 0;\
  4150. var prec = %d;\
  4151. while(userdraw_x[p]){\
  4152.  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\" ;\
  4153.  p = p+2;\
  4154. };\
  4155. if(p == 0){alert(\"nothing drawn...\");return;};\
  4156. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  4157.  var p = 0;var input_reply = new Array();\
  4158.  if( document.getElementById(\"canvas_input0\")){\
  4159.   var t = 0;\
  4160.   while(document.getElementById(\"canvas_input\"+t)){\
  4161.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4162.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4163.     p++;\
  4164.    };\
  4165.    t++;\
  4166.   };\
  4167.  };\
  4168.  if( typeof userdraw_text != 'undefined' ){\
  4169.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4170.  }\
  4171.  else\
  4172.  {\
  4173.   return reply +\"\\n\"+input_reply;\
  4174.  }\
  4175. }\
  4176. else\
  4177. {\
  4178.  if( typeof userdraw_text != 'undefined' ){\
  4179.   return reply +\"\\n\"+userdraw_text;\
  4180.  }\
  4181.  else\
  4182.  {\
  4183.   return reply;\
  4184.  }\
  4185. };\
  4186. };\n\
  4187. <!-- end function 11 read_canvas() -->",reply_precision);
  4188.     break;
  4189.     case 12: fprintf(js_include_file,"\
  4190. \n<!-- begin function 12 read_canvas() -->\n\
  4191. read_canvas = function(){\
  4192. set_reply_precision();\
  4193. var reply = \"\";\
  4194. var p = 0;\
  4195. for(p = 0; p< userdraw_x.lenght;p = p+2){\
  4196.  if(userdraw_x[p] != null){\
  4197.    reply = reply + userdraw_x[p] +\",\" + userdraw_y[p] +\",\" + userdraw_x[p+1] +\",\" + userdraw_y[p+1] +\"\\n\" ;\
  4198.  };\
  4199. };\
  4200. if(p == 0){alert(\"nothing drawn...\");return;};\
  4201. if( document.getElementById(\"canvas_input0\") ){\
  4202.  var p = 0;var input_reply = new Array();\
  4203.  if( document.getElementById(\"canvas_input0\")){\
  4204.   var t = 0;\
  4205.   while(document.getElementById(\"canvas_input\"+t)){\
  4206.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4207.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4208.     p++;\
  4209.    };\
  4210.    t++;\
  4211.   };\
  4212.  };\
  4213.  if( typeof userdraw_text != 'undefined' ){\
  4214.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4215.  }\
  4216.  else\
  4217.  {\
  4218.   return reply +\"\\n\"+input_reply;\
  4219.  }\
  4220. }\
  4221. else\
  4222. {\
  4223.  if( typeof userdraw_text != 'undefined' ){\
  4224.   return reply +\"\\n\"+userdraw_text\
  4225.  }\
  4226.  else\
  4227.  {\
  4228.   return reply;\
  4229.  }\
  4230. };\
  4231. };\n\
  4232. <!-- end function 12 read_canvas() -->");
  4233.     break;
  4234.     case 13: fprintf(js_include_file,"\
  4235. \n<!-- begin function 13 read_canvas() -->\n\
  4236. read_canvas = function(){\
  4237. var reply = new Array();\
  4238. var p = 0;var i = 0;\
  4239. var prec = %d;\
  4240. while(userdraw_x[p]){\
  4241.  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;\
  4242.  p = p+2;i++;\
  4243. };\
  4244. if(p == 0){alert(\"nothing drawn...\");return;};\
  4245. if( document.getElementById(\"canvas_input0\") ){\
  4246.  var p = 0;var input_reply = new Array();\
  4247.  if( document.getElementById(\"canvas_input0\")){\
  4248.   var t = 0;\
  4249.   while(document.getElementById(\"canvas_input\"+t)){\
  4250.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4251.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4252.     p++;\
  4253.    };\
  4254.    t++;\
  4255.   };\
  4256.  };\
  4257.  if( typeof userdraw_text != 'undefined' ){\
  4258.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4259.  }\
  4260.  else\
  4261.  {\
  4262.   return reply +\"\\n\"+input_reply;\
  4263.  }\
  4264. }\
  4265. else\
  4266. {\
  4267.  if( typeof userdraw_text != 'undefined' ){\
  4268.   return reply +\"\\n\"+userdraw_text\
  4269.  }\
  4270.  else\
  4271.  {\
  4272.   return reply;\
  4273.  }\
  4274. };\
  4275. };\n\
  4276. <!-- end function 13 read_canvas() -->",reply_precision);
  4277.     break;
  4278.     case 14: fprintf(js_include_file,"\
  4279. \n<!-- begin function 14 read_canvas() -->\n\
  4280. read_canvas = function(){\
  4281. set_reply_precision();\
  4282. var reply = new Array();\
  4283. var p = 0;var i = 0;\
  4284. while(userdraw_x[p]){\
  4285.  reply[i] = userdraw_x[p] +\":\" + userdraw_y[p] +\":\" + userdraw_x[p+1] +\":\" + userdraw_y[p+1];\
  4286.  p = p+2;i++;\
  4287. };\
  4288. if(p == 0){alert(\"nothing drawn...\");return;};\
  4289. if( document.getElementById(\"canvas_input0\") ){\
  4290.  var p = 0;var input_reply = new Array();\
  4291.  if( document.getElementById(\"canvas_input0\")){\
  4292.   var t = 0;\
  4293.   while(document.getElementById(\"canvas_input\"+t)){\
  4294.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4295.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4296.     p++;\
  4297.    };\
  4298.    t++;\
  4299.   };\
  4300.  };\
  4301.  if( typeof userdraw_text != 'undefined' ){\
  4302.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4303.  }\
  4304.  else\
  4305.  {\
  4306.   return reply +\"\\n\"+input_reply;\
  4307.  }\
  4308. }\
  4309. else\
  4310. {\
  4311.  if( typeof userdraw_text != 'undefined' ){\
  4312.   return reply +\"\\n\"+userdraw_text;\
  4313.  }\
  4314.  else\
  4315.  {\
  4316.   return reply;\
  4317.  }\
  4318. };\
  4319. };\n\
  4320. <!-- end function 14 read_canvas() -->");
  4321.     break;
  4322.     case 15: fprintf(js_include_file,"\
  4323. \n<!-- begin function 15  read_canvas() -->\n\
  4324. read_canvas = function(){\
  4325. var input_reply = new Array();\
  4326. var p = 0;\
  4327. if( document.getElementById(\"canvas_input0\")){\
  4328.  var t = 0;\
  4329.  while(document.getElementById(\"canvas_input\"+t)){\
  4330.   if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4331.    input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4332.    p++;\
  4333.   };\
  4334.   t++;\
  4335.  };\
  4336. };\
  4337. if( typeof userdraw_text != 'undefined' ){\
  4338.   return input_reply +\"\\n\"+userdraw_text;\
  4339. }\
  4340. else\
  4341. {\
  4342.  return input_reply;\
  4343. };\
  4344. };\n\
  4345. <!-- end function 15 read_canvas() -->");
  4346.     break;
  4347.     case 16: fprintf(js_include_file,"\
  4348. \n<!-- begin function 16 read_mathml() -->\n\
  4349. function read_mathml(){\
  4350. var reply = new Array();\
  4351. var p = 0;\
  4352. if( document.getElementById(\"mathml0\")){\
  4353.  while(document.getElementById(\"mathml\"+p)){\
  4354.   reply[p] = document.getElementById(\"mathml\"+p).value;\
  4355.   p++;\
  4356.  };\
  4357. };\
  4358. return reply;\
  4359. };\
  4360. this.read_mathml = read_mathml;\n\
  4361. <!-- end function 16 read_mathml() -->");
  4362.     break;
  4363.     case 17:  fprintf(js_include_file,"\
  4364. \n<!-- begin function 17 read_canvas() -->\n\
  4365. read_canvas = function(){\
  4366. if( userdraw_text.length == 0){alert(\"no text typed...\");return;}\
  4367. return userdraw_text;\
  4368. };\n\
  4369. <!-- end function 17 read_canvas() -->");
  4370.     break;
  4371.     case 18: fprintf(js_include_file,"\
  4372. \n<!-- begin function 18 read_canvas() -->\n\
  4373. read_canvas = function(){\
  4374. var p = 0;\
  4375. var reply = new Array();\
  4376. var name;\
  4377. var t = true;\
  4378. var h;var m;var s;\
  4379. while(t){\
  4380.  try{\
  4381.   name = eval('clocks'+p);\
  4382.   h = name.H;m = name.M;s = name.S;\
  4383.   if(s < 0){s = 60 + s;m = m - 1;};\
  4384.   if(m < 0){m = 60 + m;h = h - 1;};\
  4385.   if(h < 0){h = 12 + h;};\
  4386.   h = parseInt((h+m/60+s/3600)%%12);m = parseInt((m + s/60)%%60);s = parseInt(s%%60);\
  4387.   reply[p] = h+\":\"+m+\":\"+s;\
  4388.   p++;\
  4389.  }catch(e){t=false;};\
  4390. };\
  4391. if( p == 0 ){alert(\"clock(s) not modified...\");return;}\
  4392. return reply;\
  4393. };\n\
  4394. <!-- end function 18 read_canvas() -->");
  4395.     break;
  4396.     case 19: fprintf(js_include_file,"\
  4397. \n<!-- begin function 19 read_canvas() -->\n\
  4398. read_canvas = function(){\
  4399. return reply[0];\
  4400. };\n\
  4401. <!-- end function 19 read_canvas() -->");
  4402.     break;
  4403.     case 20: fprintf(js_include_file,"\
  4404. \n<!-- begin function 20 read_canvas() -->\n\
  4405. read_canvas = function(){\
  4406. var prec = %d;\
  4407. var len  = ext_drag_images.length;\
  4408. var reply = new Array(len);\
  4409. for(var p = 0 ; p < len ; p++){\
  4410.    var img = ext_drag_images[p];\
  4411.    reply[p] = (Math.round(prec*(px2x(img[6]))))/prec+\":\"+(Math.round(prec*(px2y(img[7]))))/prec;\
  4412. };\
  4413. return reply;\
  4414. };\n\
  4415. <!-- end function 20 read_canvas() -->",reply_precision);
  4416.     break;
  4417.     case 21: fprintf(js_include_file,"\
  4418. \n<!-- begin function 21 read_canvas() -->\n\
  4419. read_canvas = function(){\
  4420. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  4421. var reply_coord = new Array();var p = 0;\
  4422. var prec = %d;\
  4423. while(userdraw_x[p]){\
  4424.  reply_coord[p] = \"(\"+(Math.round(prec*(px2x(userdraw_x[p]))))/prec+\":\"+(Math.round(prec*(px2y(userdraw_y[p]))))/prec+\")\";\
  4425.  p++;\
  4426. };\
  4427. if(p == 0){alert(\"nothing drawn...\");return;};\
  4428. if( document.getElementById(\"canvas_input0\") ){\
  4429.  var p = 0;var input_reply = new Array();\
  4430.  if( document.getElementById(\"canvas_input0\")){\
  4431.   var t = 0;\
  4432.   while(document.getElementById(\"canvas_input\"+t)){\
  4433.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4434.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4435.     p++;\
  4436.    };\
  4437.    t++;\
  4438.   };\
  4439.  };\
  4440.  if( typeof userdraw_text != 'undefined' ){\
  4441.   return reply_coord+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4442.  }\
  4443.  else\
  4444.  {\
  4445.   return reply_coord+\"\\n\"+input_reply;\
  4446.  }\
  4447. }\
  4448. else\
  4449. {\
  4450.  if( typeof userdraw_text != 'undefined' ){\
  4451.   return reply_coord+\"\\n\"+userdraw_text;\
  4452.  }\
  4453.  else\
  4454.  {\
  4455.   return reply_coord;\
  4456.  };\
  4457. };\
  4458. };\n\
  4459. <!-- end function 21 read_canvas() -->",reply_precision);
  4460.     break;
  4461.     case 22: fprintf(js_include_file,"\
  4462. \n<!-- begin function 22 read_canvas() -->\n\
  4463. read_canvas = function(){\
  4464. var reply = new Array();\
  4465. var lu = userdraw_x.length;\
  4466. if(lu == 0){alert(\"nothing drawn...\");return;};\
  4467. var idx = 0;\
  4468. var prec = %d;\
  4469. for(var p = 0 ; p < lu ; p++){\
  4470.  reply[idx] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec;idx++;\
  4471.  reply[idx] = (Math.round(prec*(px2y(userdraw_y[p]))))/prec;idx++;\
  4472. };\
  4473. if( document.getElementById(\"canvas_input0\") ){\
  4474.  var p = 0;var input_reply = new Array();\
  4475.  if( document.getElementById(\"canvas_input0\")){\
  4476.   var t = 0;\
  4477.   while(document.getElementById(\"canvas_input\"+t)){\
  4478.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4479.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4480.     p++;\
  4481.    };\
  4482.    t++;\
  4483.   };\
  4484.  };\
  4485.  if( typeof userdraw_text != 'undefined' ){\
  4486.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4487.  }\
  4488.  else\
  4489.  {\
  4490.   return reply +\"\\n\"+input_reply;\
  4491.  }\
  4492. }\
  4493. else\
  4494. {\
  4495.  if( typeof userdraw_text != 'undefined' ){\
  4496.   return reply +\"\\n\"+userdraw_text;\
  4497.  }\
  4498.  else\
  4499.  {\
  4500.   return reply;\
  4501.  }\
  4502. };\
  4503. };\n\
  4504. <!-- end function 22 read_canvas() -->",reply_precision);
  4505.     break;
  4506.     case 23: fprintf(js_include_file,"\
  4507. \n<!-- begin function 23 read_canvas() default 5 px marge -->\n\
  4508. read_canvas = function(){\
  4509. if( userdraw_x.length < 2){alert(\"nothing drawn...\");return;}\
  4510. var lu = userdraw_x.length;\
  4511. if( lu != userdraw_y.length ){ alert(\"x / y mismatch !\");return;}\
  4512. var reply_x = new Array();var reply_y = new Array();\
  4513. var marge = 5;var p = 0;\
  4514. var prec = %d;\
  4515. for(var i = 0; i < lu - 1 ; i++ ){\
  4516.  if( Math.abs(userdraw_x[i] - userdraw_x[i+1])){\
  4517.   reply_x[p] = (Math.round(prec*(px2x(userdraw_x[i]))))/prec;reply_y[p] = (Math.round(prec*(px2y(userdraw_y[i]))))/prec;\
  4518.   if( isNaN(reply_x[p]) || isNaN(reply_y[p]) ){ alert(\"hmmmm ?\");return; };\
  4519.   p++;\
  4520.  };\
  4521.  reply_x[p] = (Math.round(prec*(px2x(userdraw_x[lu-1]))))/prec;reply_y[p] = (Math.round(prec*(px2y(userdraw_y[lu-1]))))/prec;\
  4522. };\
  4523. if( document.getElementById(\"canvas_input0\")){\
  4524.  var p = 0;var input_reply = new Array();\
  4525.  if( document.getElementById(\"canvas_input0\")){\
  4526.   var t = 0;\
  4527.   while(document.getElementById(\"canvas_input\"+t)){\
  4528.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4529.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4530.     p++;\
  4531.    };\
  4532.    t++;\
  4533.   };\
  4534.  };\
  4535.  if( typeof userdraw_text != 'undefined' ){\
  4536.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4537.  }\
  4538.  else\
  4539.  {\
  4540.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply;\
  4541.  }\
  4542. }\
  4543. else\
  4544. {\
  4545.  if( typeof userdraw_text != 'undefined' ){\
  4546.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_text;\
  4547.  }\
  4548.  else\
  4549.  {\
  4550.   return reply_x+\"\\n\"+reply_y;\
  4551.  };\
  4552. };\
  4553. };\n\
  4554. <!-- end function 23 read_canvas() -->",reply_precision);
  4555.     break;
  4556.     case 24: fprintf(js_include_file,"\n\
  4557. <!-- begin function 24  read_canvas() -->\n\
  4558. read_canvas = function(){\
  4559. var input_reply = new Array();\
  4560. var p = 0;\
  4561. if( document.getElementById(\"canvas_input0\")){\
  4562.  while(document.getElementById(\"canvas_input\"+p)){\
  4563.    input_reply[p] = document.getElementById(\"canvas_input\"+p).value;\
  4564.    p++;\
  4565.  };\
  4566.  return input_reply;\
  4567. };\
  4568. };\n\
  4569. <!-- end function 24 read_canvas() -->");
  4570.     break;
  4571.     case 25:
  4572.     fprintf(js_include_file,"\n<!-- begin function 25 read_canvas() : angle(s) in degrees-->\n\
  4573. read_canvas = function(){\
  4574. if( userdraw_radius.length < 1){alert(\"nothing drawn...\");return;}\
  4575. var lu = userdraw_radius.length;\
  4576. var prec = %d;\
  4577. var angle_reply = new Array(lu);\
  4578. for(var p = 0 ; p < lu ; p++){\
  4579.  angle_reply[p] = (Math.round(prec*180*(userdraw_radius[p])/Math.PI))/prec;\
  4580. };\
  4581. return angle_reply;\
  4582. };\n\
  4583. <!-- end function 25 read_canvas() -->",reply_precision);
  4584.     break;
  4585.     case 26:
  4586.     fprintf(js_include_file,"\n<!-- begin function 26 read_canvas() : angle(s) in radians-->\n\
  4587. read_canvas = function(){\
  4588. if( userdraw_radius.length < 1){alert(\"nothing drawn...\");return;}\
  4589. var lu = userdraw_radius.length;\
  4590. var prec = %d;\
  4591. var angle_reply = new Array(lu);\
  4592. for(var p = 0 ; p < lu ; p++){\
  4593.  angle_reply[p] = (Math.round(prec*(userdraw_radius[p])))/prec;\
  4594. };\
  4595. return angle_reply;\
  4596. };\n\
  4597. <!-- end function 26 read_canvas() -->",reply_precision);
  4598.     break;
  4599.     case 27:
  4600.     fprintf(js_include_file,"\n<!-- begin function 27 read_canvas()  : inputfield(s) location and their values : -->\n\
  4601. read_canvas = function(){\
  4602. var lu = userdraw_x.length;\
  4603. if( lu < 1){alert(\"nothing drawn...\");return;}\
  4604. set_reply_precision();\
  4605. var prec = %d;\
  4606. for(var p = 0 ; p < lu ; p++){\
  4607.   reply[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec+\":\"+(Math.round(prec*(px2y(userdraw_y[p]))))/prec+\":\"+ document.getElementById(\"canvas_input\"+p).value;\
  4608. };\
  4609. return reply;\
  4610. };\n\
  4611. <!-- end function 27 read_canvas() -->",reply_precision);
  4612.     break;
  4613.     default: canvas_error("hmmm unknown replyformat...");break;
  4614. }
  4615.  return;
  4616. }
  4617.  
  4618.  
  4619. /*
  4620.  add drawfunction :
  4621.  - functions used by userdraw_primitives (circle,rect,path,triangle...)
  4622.  - things not covered by the drag&drop library (static objects like parallel, lattice ,gridfill , imagefill)
  4623.  - grid / mathml
  4624.  - will not scale or zoom in
  4625.  - will not be filled via pixel operations like fill / floodfill / filltoborder / clickfill
  4626.  - is printed directly into 'js_include_file'
  4627. */
  4628.  
  4629. void add_javascript_functions(int js_functions[],int canvas_root_id){
  4630. int i;
  4631. for(i = 0 ; i < MAX_JS_FUNCTIONS; i++){
  4632.  if( js_functions[i] == 1){
  4633.     switch(i){
  4634.     case DRAG_EXTERNAL_IMAGE:
  4635. fprintf(js_include_file,"\n<!-- drag external images --->\n\
  4636. var external_canvas = create_canvas%d(7,xsize,ysize);\
  4637. var external_ctx = external_canvas.getContext(\"2d\");\
  4638. var external_canvas_rect = external_canvas.getBoundingClientRect();\
  4639. canvas_div.addEventListener(\"mousedown\",setxy,false);\
  4640. canvas_div.addEventListener(\"mouseup\",dragstop,false);\
  4641. canvas_div.addEventListener(\"mousemove\",dragxy,false);\
  4642. var selected_image = null;\
  4643. var ext_image_cnt = 0;\
  4644. var ext_drag_images = new Array();\
  4645. function drag_external_image(URL,sx,sy,swidth,sheight,x0,y0,width,height,idx,draggable){\
  4646. ext_image_cnt = idx;\
  4647. var image = new Image();\
  4648. image.src = URL;\
  4649. image.onload = function(){\
  4650.  if( x0 < 1 ){ x0 = 0; };if( y0 < 1 ){ y0 = 0; };if( sx < 1 ){ sx = 0; };if( sy < 1 ){ sy = 0; };\
  4651.  if( width < 1 ){ width = image.width; };if( height < 1 ){ height = image.height; };\
  4652.  if( swidth < 1 ){ swidth = image.width; };if( sheight < 1 ){ sheight = image.height; };\
  4653.  var img = new Array(10);\
  4654.  img[0] = draggable;img[1] = image;img[2] = sx;img[3] = sy;img[4] = swidth;img[5] = sheight;\
  4655.  img[6] = x0;img[7] = y0;img[8] = width;img[9] = height;\
  4656.  ext_drag_images[idx] = img;\
  4657.  external_ctx.drawImage(img[1],img[2],img[3],img[4],img[5],img[6],img[7],img[8],img[9]);\
  4658. };\
  4659. };\
  4660. function dragstop(evt){\
  4661. selected_image = null;return;\
  4662. };\
  4663. function dragxy(evt){\
  4664. if( selected_image != null ){\
  4665.  var xoff = (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft);\
  4666.  var yoff = (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);\
  4667.  var s_img = ext_drag_images[selected_image];\
  4668.  s_img[6] = evt.clientX - external_canvas_rect.left + xoff;\
  4669.  s_img[7] = evt.clientY - external_canvas_rect.top + yoff;\
  4670.  ext_drag_images[selected_image] = s_img;\
  4671.  external_ctx.clearRect(0,0,xsize,ysize);\
  4672.  for(var i = 0; i <= ext_image_cnt ; i++){\
  4673.   var img = ext_drag_images[i];\
  4674.   external_ctx.drawImage(img[1],img[2],img[3],img[4],img[5],img[6],img[7],img[8],img[9]);\
  4675.  };\
  4676. };\
  4677. };\
  4678. function setxy(evt){\
  4679. if( ! selected_image && evt.which == 1 ){\
  4680.  var xoff = (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft);\
  4681.  var yoff = (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);\
  4682.  var xm = evt.clientX - external_canvas_rect.left + xoff;\
  4683.  var ym = evt.clientY - external_canvas_rect.top + yoff;\
  4684.  for(var p = 0 ; p <= ext_image_cnt ; p++){\
  4685.   var img = ext_drag_images[p];\
  4686.   if( img[0] == 1 ){\
  4687.    var w = img.width;\
  4688.    var h = img.height;\
  4689.    if( xm > img[6] && xm < img[6] + img[4]){\
  4690.     if( ym > img[7] && ym < img[7] + img[5]){\
  4691.      img[6] = xm;\
  4692.      img[7] = ym;\
  4693.      ext_drag_images[p] = img;\
  4694.      selected_image = p;\
  4695.      dragxy(evt);\
  4696.     };\
  4697.    };\
  4698.   };\
  4699.  };\
  4700. }\
  4701. else\
  4702. {\
  4703.  selected_image = null;\
  4704. };\
  4705. };",canvas_root_id);
  4706.     break;
  4707.  
  4708.     case DRAW_EXTERNAL_IMAGE:
  4709. fprintf(js_include_file,"\n<!-- draw external images -->\n\
  4710. var draw_external_image = function(URL,sx,sy,swidth,sheight,x0,y0,width,height,draggable){\
  4711. var image = new Image();\
  4712. image.src = URL;\
  4713. var canvas_bg_div = document.getElementById(\"canvas_div%d\");\
  4714. image.onload = function(){\
  4715.  if( x0 < 1 ){ x0 = 0; };\
  4716.  if( y0 < 1 ){ y0 = 0; };\
  4717.  if( sx < 1 ){ sx = 0; };\
  4718.  if( sy < 1 ){ sy = 0; };\
  4719.  if( width < 1 ){ width = image.width;};\
  4720.  if( height < 1 ){ height = image.height;};\
  4721.  if( swidth < 1 ){ swidth = image.width;};\
  4722.  if( sheight < 1 ){ sheight = image.height;};\
  4723.  var ml = x0 - sx;\
  4724.  var mh = y0 - sy;\
  4725.  canvas_bg_div.style.backgroundPosition= \"left \"+ml+\"px top \"+mh+\"px\";\
  4726.  canvas_bg_div.style.backgroundSize = width+\"px \"+height+\"px\";\
  4727.  canvas_bg_div.style.backgroundRepeat = \"no-repeat\";\
  4728.  canvas_bg_div.style.backgroundPosition= sx+\"px \"+sy+\"px\";\
  4729.  canvas_bg_div.style.backgroundImage = \"url(\" + URL + \")\";\
  4730. };\
  4731. };",canvas_root_id);
  4732.     break;
  4733.     case DRAW_GRIDFILL:/* not used for userdraw */
  4734. fprintf(js_include_file,"\n<!-- draw gridfill -->\n\
  4735. var draw_gridfill = function(canvas_type,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize){\
  4736. var obj;\
  4737. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4738.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4739. }\
  4740. else\
  4741. {\
  4742.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4743. };\
  4744. var ctx = obj.getContext(\"2d\");\
  4745. var x,y;\
  4746. snap_x = dx;snap_y = dy;\
  4747. ctx.save();\
  4748. ctx.strokeStyle=\"rgba(\"+color+\",\"+opacity+\")\";\
  4749. for( x = x0 ; x < xsize+dx ; x = x + dx ){\
  4750.    ctx.moveTo(x,y0);\
  4751.    ctx.lineTo(x,ysize);\
  4752. };\
  4753. for( y = y0 ; y < ysize+dy; y = y + dy ){\
  4754.    ctx.moveTo(x0,y);\
  4755.    ctx.lineTo(xsize,y);\
  4756. };\
  4757. ctx.stroke();\
  4758. ctx.restore();\
  4759. return;};",canvas_root_id,canvas_root_id,canvas_root_id);
  4760.     break;
  4761.  
  4762.     case DRAW_IMAGEFILL:/* not  used for userdraw */
  4763. fprintf(js_include_file,"\n<!-- draw imagefill -->\n\
  4764. var draw_imagefill = function(canvas_type,x0,y0,URL,xsize,ysize){\
  4765. var obj;\
  4766. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4767.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4768. }\
  4769. else\
  4770. {\
  4771.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4772. };\
  4773. var ctx = obj.getContext(\"2d\");\
  4774. ctx.save();\
  4775. var img = new Image();\
  4776. img.src = URL;\
  4777. img.onload = function(){\
  4778.  if( (img.width > xsize-x0) && (img.height > ysize-y0) ){\
  4779.    ctx.drawImage(img,x0,y0,xsize,ysize);\
  4780.  }\
  4781.  else\
  4782.  {\
  4783.    var repeat = \"repeat\";\
  4784.    if(img.width > xsize - x0){\
  4785.         repeat = \"repeat-y\";\
  4786.    }\
  4787.    else\
  4788.    {\
  4789.     if( img.height > ysize -x0 ){\
  4790.      repeat = \"repeat-x\";\
  4791.     }\
  4792.    }\
  4793.    var pattern = ctx.createPattern(img,repeat);\
  4794.    ctx.rect(x0,y0,xsize,ysize);\
  4795.    ctx.fillStyle = pattern;\
  4796.  }\
  4797.  ctx.fill();\
  4798. };\
  4799. ctx.restore();\
  4800. return;\
  4801. };",canvas_root_id,canvas_root_id,canvas_root_id);
  4802.     break;
  4803.  
  4804.     case DRAW_DOTFILL:/* not  used for userdraw */
  4805. fprintf(js_include_file,"\n<!-- draw dotfill -->\n\
  4806. var draw_dotfill = function(canvas_type,x0,y0,dx,dy,radius,color,opacity,xsize,ysize){\
  4807. var obj;\
  4808. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4809.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4810. }\
  4811. else\
  4812. {\
  4813.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4814. };\
  4815. var ctx = obj.getContext(\"2d\");\
  4816. var x,y;\
  4817. ctx.closePath();\
  4818. ctx.save();\
  4819. snap_x = dx;snap_y = dy;\
  4820. ctx.fillStyle=\"rgba(\"+color+\",\"+opacity+\")\";\
  4821. for( x = x0 ; x < xsize+dx ; x = x + dx ){\
  4822.  for( y = y0 ; y < ysize+dy ; y = y + dy ){\
  4823.   ctx.arc(x,y,radius,0,2*Math.PI,false);\
  4824.   ctx.closePath();\
  4825.  }\
  4826. }\
  4827. ctx.fill();\
  4828. ctx.restore();\
  4829. return;};",canvas_root_id,canvas_root_id,canvas_root_id);
  4830.     break;
  4831.  
  4832.     case DRAW_DIAMONDFILL:/* not used for userdraw */
  4833. fprintf(js_include_file,"\n<!-- draw hatch fill -->\n\
  4834. var draw_diamondfill = function(canvas_type,x0,y0,dx,dy,linewidth,stroke_color,stroke_opacity,xsize,ysize){\
  4835.  var obj;\
  4836. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4837.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4838. }\
  4839. else\
  4840. {\
  4841.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4842. };\
  4843. var ctx = obj.getContext(\"2d\");\
  4844. var x;\
  4845. var y;\
  4846. ctx.save();\
  4847. ctx.lineWidth = linewidth;\
  4848. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4849. y = ysize;\
  4850. for( x = x0 ; x < xsize ; x = x + dx ){\
  4851.  ctx.moveTo(x,y0);\
  4852.  ctx.lineTo(xsize,y);\
  4853.  y = y - dy;\
  4854. };\
  4855. y = y0;\
  4856. for( x = xsize ; x > 0 ; x = x - dx){\
  4857.  ctx.moveTo(x,ysize);\
  4858.  ctx.lineTo(x0,y);\
  4859.  y = y + dy;\
  4860. };\
  4861. x = x0;\
  4862. for( y = y0 ; y < ysize ; y = y + dy ){\
  4863.  ctx.moveTo(xsize,y);\
  4864.  ctx.lineTo(x,ysize);\
  4865.  x = x + dx;\
  4866. };\
  4867. x = xsize;\
  4868. for( y = ysize ; y > y0 ; y = y - dy ){\
  4869.  ctx.moveTo(x,y0);\
  4870.  ctx.lineTo(x0,y);\
  4871.  x = x - dx;\
  4872. };\
  4873. ctx.stroke();\
  4874. ctx.restore();\
  4875. return;\
  4876. }",canvas_root_id,canvas_root_id,canvas_root_id);
  4877.     break;
  4878.  
  4879.     case DRAW_HATCHFILL:/* not used for userdraw */
  4880. fprintf(js_include_file,"\n<!-- draw hatch fill -->\n\
  4881. var draw_hatchfill = function(canvas_type,x0,y0,dx,dy,linewidth,stroke_color,stroke_opacity,xsize,ysize){\
  4882.  var obj;\
  4883. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4884.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4885. }\
  4886. else\
  4887. {\
  4888.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4889. };\
  4890. var ctx = obj.getContext(\"2d\");\
  4891. var x;\
  4892. var y;\
  4893. ctx.save();\
  4894. ctx.lineWidth = linewidth;\
  4895. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4896. y = ysize;\
  4897. for( x = x0 ; x < xsize ; x = x + dx ){\
  4898.  ctx.moveTo(x,y0);\
  4899.  ctx.lineTo(xsize,y);\
  4900.  y = y - dy;\
  4901. };\
  4902. y = y0;\
  4903. for( x = xsize ; x >= dx ; x = x - dx){\
  4904.  ctx.moveTo(x,ysize);\
  4905.  ctx.lineTo(x0,y);\
  4906.  y = y + dy;\
  4907. };\
  4908. ctx.stroke();\
  4909. ctx.restore();\
  4910. return;\
  4911. };",canvas_root_id,canvas_root_id,canvas_root_id);
  4912.     break;
  4913.     case DRAW_CIRCLES:/*  used for userdraw */
  4914. fprintf(js_include_file,"\n<!-- draw circles -->\n\
  4915. var draw_circles = function(ctx,x_points,y_points,radius,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_affine,affine_matrix){\
  4916. ctx.save();\
  4917. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  4918. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4919. ctx.lineWidth = line_width;\
  4920. for(var p = 0 ; p < x_points.length ; p++ ){\
  4921.  ctx.beginPath();\
  4922.  ctx.arc(x_points[p],y_points[p],radius[p],0,2*Math.PI,false);\
  4923.  ctx.closePath();\
  4924.  if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4925.  if(use_filled == 1){ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();}\
  4926.  ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4927.  ctx.stroke();\
  4928. }\
  4929. ctx.restore();\
  4930. return;\
  4931. };");
  4932.     break;
  4933.     case DRAW_POLYLINE:/* user for userdraw : draw lines through points */
  4934. fprintf(js_include_file,"\n<!-- draw polyline -->\n\
  4935. var draw_polyline = function(ctx,x_points,y_points,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_affine,affine_matrix){\
  4936. ctx.save();\
  4937. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  4938. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4939. ctx.lineWidth = line_width;\
  4940. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4941. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4942. ctx.clearRect(0,0,xsize,ysize);\
  4943. ctx.beginPath();\
  4944. for(var p = 0 ; p < x_points.length-1 ; p++ ){\
  4945.  ctx.moveTo(x_points[p],y_points[p]);\
  4946.  ctx.lineTo(x_points[p+1],y_points[p+1]);\
  4947. }\
  4948. ctx.closePath();\
  4949. ctx.stroke();\
  4950. ctx.fillStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4951. for(var p = 0 ; p < x_points.length ; p++ ){\
  4952.  ctx.beginPath();\
  4953.  ctx.arc(x_points[p],y_points[p],line_width,0,2*Math.PI,false);\
  4954.  ctx.closePath();ctx.fill();ctx.stroke();\
  4955. };\
  4956. ctx.restore();\
  4957. return;\
  4958. };");
  4959.     break;
  4960.  
  4961.     case DRAW_SEGMENTS:/*  used for userdraw */
  4962. fprintf(js_include_file,"\n<!-- draw segments -->\n\
  4963. var draw_segments = function(ctx,x_points,y_points,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_affine,affine_matrix){\
  4964. ctx.save();\
  4965. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  4966. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4967. ctx.lineWidth = line_width;\
  4968. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4969. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4970. for(var p = 0 ; p < x_points.length ; p = p+2 ){\
  4971.  ctx.beginPath();\
  4972.  ctx.moveTo(x_points[p],y_points[p]);\
  4973.  ctx.lineTo(x_points[p+1],y_points[p+1]);\
  4974.  ctx.closePath();\
  4975.  ctx.stroke();\
  4976.  }\
  4977.  ctx.restore();\
  4978.  return;\
  4979. };");
  4980.     break;
  4981.  
  4982.     case DRAW_LINES:/*  used for userdraw */
  4983. fprintf(js_include_file,"\n<!-- draw lines -->\n\
  4984. function calc_line(x1,x2,y1,y2){\
  4985. var marge = 2;\
  4986. if(x1 < x2+marge && x1>x2-marge){\
  4987.  return [x1,0,x1,ysize];\
  4988. };\
  4989. if(y1 < y2+marge && y1>y2-marge){\
  4990.  return [0,y1,xsize,y1];\
  4991. };\
  4992. var Y1 = y1 - (x1)*(y2 - y1)/(x2 - x1);\
  4993. var Y2 = y1 + (xsize - x1)*(y2 - y1)/(x2 - x1);\
  4994. return [0,Y1,xsize,Y2];\
  4995. };\
  4996. var draw_lines = function(ctx,x_points,y_points,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_affine,affine_matrix){\
  4997. ctx.save();\
  4998. var line = new Array(4);\
  4999. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5000. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5001. ctx.lineWidth = line_width;\
  5002. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5003. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5004. for(var p = 0 ; p < x_points.length ; p = p+2 ){\
  5005.  line = calc_line(x_points[p],x_points[p+1],y_points[p],y_points[p+1]);\
  5006.  ctx.beginPath();\
  5007.  ctx.moveTo(line[0],line[1]);\
  5008.  ctx.lineTo(line[2],line[3]);\
  5009.  ctx.closePath();\
  5010.  ctx.stroke();\
  5011.  }\
  5012.  ctx.restore();\
  5013.  return;\
  5014. };");
  5015.     break;
  5016.  
  5017.     case DRAW_CROSSHAIRS:/*  used for userdraw */
  5018. fprintf(js_include_file,"\n<!-- draw crosshairs  -->\n\
  5019. var draw_crosshairs = function(ctx,x_points,y_points,line_width,crosshair_size,stroke_color,stroke_opacity,use_rotate,angle,use_affine,affine_matrix){\
  5020. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5021. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5022. ctx.lineWidth = line_width;\
  5023. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5024. var x1,x2,y1,y2;\
  5025. for(var p = 0 ; p < x_points.length ; p++ ){\
  5026.  x1 = x_points[p] - crosshair_size;\
  5027.  x2 = x_points[p] + crosshair_size;\
  5028.  y1 = y_points[p] - crosshair_size;\
  5029.  y2 = y_points[p] + crosshair_size;\
  5030.  ctx.beginPath();\
  5031.  ctx.moveTo(x1,y1);\
  5032.  ctx.lineTo(x2,y2);\
  5033.  ctx.closePath();\
  5034.  ctx.stroke();\
  5035.  ctx.beginPath();\
  5036.  ctx.moveTo(x2,y1);\
  5037.  ctx.lineTo(x1,y2);\
  5038.  ctx.closePath();\
  5039.  ctx.stroke();\
  5040. }\
  5041. ctx.restore();\
  5042.  return;\
  5043. };");
  5044.     break;
  5045.  
  5046.     case DRAW_RECTS:/*  used for userdraw */
  5047. fprintf(js_include_file,"\n<!-- draw rects -->\n\
  5048. var draw_rects = function(ctx,x_points,y_points,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_affine,affine_matrix){\
  5049. ctx.save();\
  5050. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5051. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5052. ctx.lineWidth = line_width;\
  5053. ctx.strokeStyle = \"rgba('+stroke_color+','+stroke_opacity+')\";\
  5054. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];}};\
  5055. for(var p = 0 ; p < x_points.length ; p = p + 2){\
  5056.  ctx.beginPath();\
  5057.  ctx.rect(x_points[p],y_points[p],x_points[p+1]-x_points[p],y_points[p+1]-y_points[p]);\
  5058.  ctx.closePath();\
  5059.  if(use_filled == 1 ){ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();}\
  5060.  ctx.stroke();\
  5061. };\
  5062. ctx.restore();\
  5063. return;\
  5064. };");
  5065.     break;
  5066.  
  5067.     case DRAW_ROUNDRECTS:/*  used for userdraw */
  5068. fprintf(js_include_file,"\n<!-- draw round rects -->\n\
  5069. var draw_roundrects = function(ctx,x_points,y_points,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype0,use_rotate,angle,use_affine,affine_matrix){\
  5070. ctx.save();\
  5071. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5072. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5073. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5074. var x,y,w,h,r;\
  5075. for(var p = 0; p < x_points.length; p = p+2){\
  5076.  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);\
  5077.  ctx.beginPath();ctx.moveTo(x + r, y);\
  5078.  ctx.lineTo(x + w - r, y);\
  5079.  ctx.quadraticCurveTo(x + w, y, x + w, y + r);\
  5080.  ctx.lineTo(x + w, y + h - r);\
  5081.  ctx.quadraticCurveTo(x + w, y + h, x + w - r, y + h);\
  5082.  ctx.lineTo(x + r, y + h);\
  5083.  ctx.quadraticCurveTo(x, y + h, x, y + h - r);\
  5084.  ctx.lineTo(x, y + r);\
  5085.  ctx.quadraticCurveTo(x, y, x + r, y);\
  5086.  ctx.closePath();if( use_dashed == 1 ){ctx.setLineDash([dashtype0,dashtype1]);};\
  5087.  ctx.strokeStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5088.  if( use_filled == 1 ){ctx.fillStyle =\"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();};\
  5089.  ctx.stroke();\
  5090. }\
  5091. ctx.restore();\
  5092. };");
  5093.     break;
  5094.  
  5095.     case DRAW_ELLIPSES:/* not  used for userdraw */
  5096. fprintf(js_include_file,"\n<!-- draw ellipses -->\n\
  5097. var draw_ellipses = function(canvas_type,x_points,y_points,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype0,use_rotate,angle,use_affine,affine_matrix){\
  5098. var obj;\
  5099. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5100.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5101. }\
  5102. else\
  5103. {\
  5104.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5105. };\
  5106. var ctx = obj.getContext(\"2d\");\
  5107. ctx.save();\
  5108. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5109. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5110. var cx,cy,ry,rx;\
  5111. ctx.lineWidth = line_width;\
  5112. if( use_filled == 1 ){ctx.fillStyle =\"rgba(\"+fill_color+\",\"+fill_opacity+\")\";};\
  5113. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5114. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5115. for(var p=0;p< x_points.length;p = p+2){\
  5116.  ctx.beginPath();\
  5117.  cx = x_points[p];cy = y_points[p];rx = 0.25*x_points[p+1];ry = 0.25*y_points[p+1];\
  5118.  ctx.translate(cx - rx, cy - ry);\
  5119.  ctx.scale(rx, ry);\
  5120.  ctx.arc(1, 1, 1, 0, 2 * Math.PI, false);\
  5121.  if( use_filled == 1 ){ctx.fill();}\
  5122.  ctx.stroke();\
  5123. };\
  5124. ctx.restore();\
  5125. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5126.     break;
  5127.  
  5128.     case DRAW_PATHS: /*  used for userdraw */
  5129. fprintf(js_include_file,"\n<!-- draw paths -->\n\
  5130. var draw_paths = function(ctx,x_points,y_points,line_width,closed_path,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype0,use_rotate,angle,use_affine,affine_matrix){\
  5131. ctx.save();\
  5132. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5133. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5134. ctx.lineWidth = line_width;\
  5135. ctx.lineJoin = \"round\";\
  5136. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5137. ctx.beginPath();\
  5138. ctx.moveTo(x_points[0],y_points[0]);\
  5139. for(var p = 1 ; p < x_points.length ; p++ ){ctx.lineTo(x_points[p],y_points[p]);}\
  5140. if(closed_path == 1){ctx.lineTo(x_points[0],y_points[0]);ctx.closePath();}\
  5141. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5142. if(use_filled == 1){ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();}\
  5143. ctx.stroke();\
  5144. ctx.restore();\
  5145. return;\
  5146. };");
  5147.  
  5148.     break;
  5149.     case DRAW_ARROWS:/*  used for userdraw */
  5150. fprintf(js_include_file,"\n<!-- draw arrows -->\n\
  5151. var draw_arrows = function(ctx,x_points,y_points,arrow_head,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,dashtype1,type,use_rotate,angle,use_affine,affine_matrix){\
  5152. ctx.save();\
  5153. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5154. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5155. ctx.strokeStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5156. ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5157. ctx.lineWidth = line_width;\
  5158. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5159. ctx.lineCap = \"round\";\
  5160. var x1,y1,x2,y2,dx,dy,len;\
  5161. for(var p = 0 ; p < x_points.length - 1 ; p = p +2){\
  5162.   ctx.save();\
  5163.   x1 = x_points[p];y1 = y_points[p];x2 = x_points[p+1];y2 = y_points[p+1];dx = x2 - x1;dy = y2 - y1;\
  5164.   len = Math.sqrt(dx*dx+dy*dy);\
  5165.   ctx.translate(x2,y2);\
  5166.   ctx.rotate(Math.atan2(dy,dx));\
  5167.   ctx.lineCap = \"round\";\
  5168.   ctx.beginPath();\
  5169.   ctx.moveTo(0,0);\
  5170.   ctx.lineTo(-len,0);\
  5171.   ctx.closePath();\
  5172.   ctx.stroke();\
  5173.   ctx.beginPath();\
  5174.   ctx.moveTo(0,0);\
  5175.   ctx.lineTo(-1*arrow_head,-0.5*arrow_head);\
  5176.   ctx.lineTo(-1*arrow_head, 0.5*arrow_head);\
  5177.   ctx.closePath();\
  5178.   ctx.fill();\
  5179.   ctx.restore();\
  5180.   if( type == 2 ){\
  5181.     ctx.save();\
  5182.     ctx.translate(x1,y1);\
  5183.     ctx.rotate(Math.atan2(-dy,-dx));\
  5184.     ctx.beginPath();\
  5185.     ctx.moveTo(0,0);\
  5186.     ctx.lineTo(-1*arrow_head,-0.5*arrow_head);\
  5187.     ctx.lineTo(-1*arrow_head, 0.5*arrow_head);\
  5188.     ctx.closePath();\
  5189.     ctx.stroke();\
  5190.     ctx.fill();\
  5191.     ctx.restore();\
  5192.   }\
  5193.  }\
  5194.  ctx.restore();\
  5195.  return;\
  5196. };");
  5197.     break;
  5198.  
  5199.     case DRAW_VIDEO:/* not  used for userdraw */
  5200. fprintf(js_include_file,"\n<!-- draw video -->\n\
  5201. var draw_video = function(canvas_root_id,x,y,w,h,URL){\
  5202. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  5203. var video_div = document.createElement(\"div\");\
  5204. canvas_div.appendChild(video_div);\
  5205. video_div.style.position = \"absolute\";\
  5206. video_div.style.left = x+\"px\";\
  5207. video_div.style.top = y+\"px\";\
  5208. video_div.style.width = w+\"px\";\
  5209. video_div.style.height = h+\"px\";\
  5210. var video = document.createElement(\"video\");\
  5211. video_div.appendChild(video);\
  5212. video.style.width = w+\"px\";\
  5213. video.style.height = h+\"px\";\
  5214. video.autobuffer = true;\
  5215. video.controls = true;video.autoplay = false;\
  5216. var src = document.createElement(\"source\");\
  5217. src.type = \"video/mp4\";\
  5218. src.src = URL;\
  5219. video.appendChild(src);\
  5220. video.load();\
  5221. return;\
  5222. };");
  5223.     break;
  5224.  
  5225.     case DRAW_AUDIO:/* not used for userdraw */
  5226. fprintf(js_include_file,"\n<!-- draw audio -->\n\
  5227. var draw_audio = function(canvas_root_id,x,y,w,h,loop,visible,URL1,URL2){\
  5228. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  5229. var audio_div = document.createElement(\"div\");\
  5230. canvas_div.appendChild(audio_div);\
  5231. audio_div.style.position = \"absolute\";\
  5232. audio_div.style.left = x+\"px\";\
  5233. audio_div.style.top = y+\"px\";\
  5234. audio_div.style.width = w+\"px\";\
  5235. audio_div.style.height = h+\"px\";\
  5236. var audio = document.createElement(\"audio\");\
  5237. audio_div.appendChild(audio);\
  5238. audio.setAttribute(\"style\",\"width:\"+w+\"px;height:\"+h+\"px\");\
  5239. audio.autobuffer = true;\
  5240. if(visible == 1 ){ audio.controls = true;audio.autoplay = false;}else{ audio.controls = false;audio.autoplay = true;}\
  5241. if(loop == 1 ){ audio.loop = true;}else{ audio.loop = false;}\
  5242. var src1 = document.createElement(\"source\");\
  5243. src1.type = \"audio/ogg\";\
  5244. src1.src = URL1;\
  5245. audio.appendChild(src1);\
  5246. var src2 = document.createElement(\"source\");\
  5247. src2.type = \"audio/mpeg\";\
  5248. src2.src = URL2;\
  5249. audio.appendChild(src2);\
  5250. audio.load();\
  5251. return;\
  5252. };");
  5253.     break;
  5254.  
  5255.     case DRAW_HTTP:/* not  used for userdraw */
  5256. fprintf(js_include_file,"\n<!-- draw http -->\n\
  5257. var draw_http = function(canvas_root_id,x,y,w,h,URL){\
  5258. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  5259. var http_div = document.createElement(\"div\");\
  5260. var iframe = document.createElement(\"iframe\");\
  5261. canvas_div.appendChild(http_div);\
  5262. http_div.appendChild(iframe);\
  5263. iframe.src = URL;\
  5264. iframe.setAttribute(\"width\",w);\
  5265. iframe.setAttribute(\"height\",h);\
  5266. return;\
  5267. };");
  5268.     break;
  5269.  
  5270.     case DRAW_XML:
  5271. fprintf(js_include_file,"\n<!-- draw xml -->\n\
  5272. var draw_xml = function(canvas_root_id,x,y,w,h,mathml,onclick){\
  5273. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  5274. var xml_div = document.createElement(\"div\");\
  5275. canvas_div.appendChild(xml_div);\
  5276. xml_div.innerHTML = mathml;\
  5277. if(onclick != 0){\
  5278.  xml_div.onclick = function(){\
  5279.   reply[0] = onclick;\
  5280.   alert(\"send \"+onclick+\" ?\");\
  5281.  };\
  5282. };\
  5283. xml_div.style.position = \"absolute\";\
  5284. xml_div.style.left = x+\"px\";\
  5285. xml_div.style.top = y+\"px\";\
  5286. xml_div.style.width = w+\"px\";\
  5287. xml_div.style.height = h+\"px\";\
  5288. return;\
  5289. };"
  5290. );
  5291.     break;
  5292.     case DRAW_SGRAPH:
  5293. /*
  5294.  xstart = given
  5295.  ystart = given
  5296.  sgraph(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily)
  5297. */
  5298. fprintf(js_include_file,"\n<!-- draw sgraph -->\n\
  5299. var draw_sgraph = function(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily,opacity,font_size){\
  5300. 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);};\
  5301. var ctx = obj.getContext(\"2d\");\
  5302. ctx.font = fontfamily;\
  5303. var minor_opacity = 0.8*opacity;\
  5304. ctx.clearRect(0,0,xsize,ysize);\
  5305. var zero_x = 0.1*xsize;\
  5306. var zero_y = 0.9*ysize;\
  5307. var snor_x;var snor_y;\
  5308. if( xstart != xmin){\
  5309.  snor_x = 0.1*xsize;\
  5310. }\
  5311. else\
  5312. {\
  5313.  snor_x = 0;\
  5314.  xstart = xmin;\
  5315. };\
  5316. ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  5317. ctx.lineWidth = 2;\
  5318. ctx.beginPath();\
  5319. ctx.moveTo(xsize,zero_y);\
  5320. ctx.lineTo(zero_x,zero_y);\
  5321. ctx.lineTo(zero_x,0);\
  5322. ctx.stroke();\
  5323. ctx.closePath();\
  5324. ctx.beginPath();\
  5325. ctx.moveTo(zero_x,zero_y);\
  5326. ctx.lineTo(zero_x + 0.25*snor_x,zero_y - 0.1*snor_x);\
  5327. ctx.lineTo(zero_x + 0.5*snor_x,zero_y + 0.1*snor_x);\
  5328. ctx.lineTo(zero_x + 0.75*snor_x,zero_y - 0.1*snor_x);\
  5329. ctx.lineTo(zero_x + snor_x,zero_y);\
  5330. ctx.stroke();\
  5331. ctx.closePath();\
  5332. ctx.beginPath();\
  5333. var num = xstart;\
  5334. var flipflop = 1;\
  5335. var step_x = xmajor*(xsize - zero_x - snor_x)/(xmax - xstart);\
  5336. var txtsize;var txt_marge=step_x - 5;\
  5337. for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  5338.  txtsize = ctx.measureText(num).width;\
  5339.  if( txtsize > txt_marge ){if( flipflop == 1 ){flipflop = 0;}else{flipflop = 1;};};\
  5340.  if( flipflop == 1){\
  5341.   ctx.fillText(num,x - 0.5*txtsize,zero_y+font_size);\
  5342.  }\
  5343.  else\
  5344.  {\
  5345.   ctx.fillText(num,x - 0.5*txtsize,zero_y+2*font_size);\
  5346.  }\
  5347.  num = num + xmajor;\
  5348. };\
  5349. ctx.stroke();\
  5350. ctx.closePath();\
  5351. ctx.lineWidth = 1;\
  5352. ctx.beginPath();\
  5353. for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  5354.   ctx.moveTo(x,zero_y);\
  5355.   ctx.lineTo(x,0);\
  5356. };\
  5357. ctx.stroke();\
  5358. ctx.closePath();\
  5359. if( xminor > 1){\
  5360.  ctx.lineWidth = 0.5;\
  5361.  ctx.beginPath();\
  5362.  ctx.strokeStyle = \"rgba(\"+minorcolor+\",\"+minor_opacity+\")\";\
  5363.  var minor_step_x = step_x / xminor;\
  5364.  var nx;\
  5365.  for(var x = zero_x+snor_x; x < xsize;x = x + step_x){\
  5366.    num = 1;\
  5367.    for(var p = 1 ; p < xminor ; p++){\
  5368.     nx = x + num*minor_step_x;\
  5369.     ctx.moveTo(nx,zero_y);\
  5370.     ctx.lineTo(nx,0);\
  5371.     num++;\
  5372.    };\
  5373.  };\
  5374.  ctx.stroke();\
  5375.  ctx.closePath();\
  5376.  ctx.beginPath();\
  5377.  ctx.lineWidth = 2;\
  5378.  ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  5379.  for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  5380.   ctx.moveTo(x,zero_y);ctx.lineTo(x,zero_y - 12);\
  5381.  };\
  5382.  for(var x = zero_x+snor_x ; x < xsize;x = x + minor_step_x){\
  5383.   ctx.moveTo(x,zero_y);ctx.lineTo(x,zero_y - 6);\
  5384.  };\
  5385.  ctx.stroke();\
  5386.  ctx.closePath();\
  5387.  ctx.lineWidth = 0.5;\
  5388. };\
  5389. xmin = xstart - (xmajor*(zero_x+snor_x)/step_x);\
  5390. if( ystart != ymin){\
  5391.  snor_y = 0.1*ysize;\
  5392. }\
  5393. else\
  5394. {\
  5395.  snor_y = 0;\
  5396.  ystart = ymin;\
  5397. };\
  5398. ctx.lineWidth = 2;\
  5399. ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  5400. ctx.beginPath();\
  5401. ctx.moveTo(zero_x,zero_y);\
  5402. ctx.lineTo(zero_x - 0.1*snor_y,zero_y - 0.25*snor_y);\
  5403. ctx.lineTo(zero_x + 0.1*snor_y,zero_y - 0.5*snor_y);\
  5404. ctx.lineTo(zero_x - 0.1*snor_y,zero_y - 0.75*snor_y);\
  5405. ctx.lineTo(zero_x,zero_y - snor_y);\
  5406. ctx.stroke();\
  5407. ctx.closePath();\
  5408. ctx.beginPath();\
  5409. ctx.lineWidth = 1;\
  5410. num = ystart;\
  5411. var step_y = ymajor*(zero_y - snor_y)/(ymax - ystart);\
  5412. for(var y = zero_y - snor_y ; y > 0; y = y - step_y){\
  5413.  ctx.moveTo(zero_x,y);\
  5414.  ctx.lineTo(xsize,y);\
  5415.  ctx.fillText(num,zero_x - ctx.measureText(num+\" \").width,parseInt(y+0.2*font_size));\
  5416.  num = num + ymajor;\
  5417. };\
  5418. ctx.stroke();\
  5419. ctx.closePath();\
  5420. if( yminor > 1){\
  5421.  ctx.lineWidth = 0.5;\
  5422.  ctx.beginPath();\
  5423.  ctx.strokeStyle = \"rgba(\"+minorcolor+\",\"+minor_opacity+\")\";\
  5424.  var minor_step_y = step_y / yminor;\
  5425.  var ny;\
  5426.  for(var y = 0 ; y < zero_y - snor_y ;y = y + step_y){\
  5427.   num = 1;\
  5428.   for(var p = 1 ;p < yminor;p++){\
  5429.     ny = y + num*minor_step_y;\
  5430.     ctx.moveTo(zero_x,ny);\
  5431.     ctx.lineTo(xsize,ny);\
  5432.     num++;\
  5433.    };\
  5434.  };\
  5435.  ctx.stroke();\
  5436.  ctx.closePath();\
  5437.  ctx.lineWidth = 2;\
  5438.  ctx.beginPath();\
  5439.  ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  5440.  for(var y = zero_y - snor_y ; y > 0 ;y = y - step_y){\
  5441.   ctx.moveTo(zero_x,y);\
  5442.   ctx.lineTo(zero_x+12,y);\
  5443.  };\
  5444.  for(var y = zero_y - snor_y ; y > 0 ;y = y - minor_step_y){\
  5445.   ctx.moveTo(zero_x,y);\
  5446.   ctx.lineTo(zero_x+6,y);\
  5447.  };\
  5448.  ctx.stroke();\
  5449.  ctx.closePath();\
  5450. };\
  5451. ymin = ystart - (ymajor*(ysize - zero_y + snor_y)/step_y);\
  5452. if( typeof legend%d  !== 'undefined' ){\
  5453.  ctx.globalAlpha = 1.0;\
  5454.  var y_offset = 2*font_size;\
  5455.  var txt;var txt_size;\
  5456.  var x_offset = xsize - 2*font_size;\
  5457.  var l_length = legend%d.length;var barcolor = new Array();\
  5458.  if( typeof legendcolors%d !== 'undefined' ){\
  5459.   for(var p = 0 ; p < l_length ; p++){\
  5460.    barcolor[p] = legendcolors%d[p];\
  5461.   };\
  5462.  }else{\
  5463.   if( barcolor.length == 0 ){\
  5464.    for(var p = 0 ; p < l_length ; p++){\
  5465.     barcolor[p] = stroke_color;\
  5466.    };\
  5467.   };\
  5468.  };\
  5469.  for(var p = 0; p < l_length; p++){\
  5470.   ctx.fillStyle = barcolor[p];\
  5471.   txt = legend%d[p];\
  5472.   txt_size = ctx.measureText(txt).width;\
  5473.   ctx.fillText(legend%d[p],x_offset - txt_size, y_offset);\
  5474.   y_offset = parseInt(y_offset + 1.5*font_size);\
  5475.  };\
  5476. };\
  5477. if( typeof xaxislabel !== 'undefined' ){\
  5478.   ctx.fillStyle = \'#000000\';\
  5479.   var txt_size = ctx.measureText(xaxislabel).width + 4 ;\
  5480.   ctx.fillText(xaxislabel,xsize - txt_size, zero_y - 7);\
  5481. };\
  5482. if( typeof yaxislabel !== 'undefined'){\
  5483.   ctx.save();\
  5484.   ctx.fillStyle = \'#000000\';\
  5485.   var txt_size = ctx.measureText(yaxislabel).width;\
  5486.   ctx.translate(zero_x+8 + font_size,txt_size+font_size);\
  5487.   ctx.rotate(-0.5*Math.PI);\
  5488.   ctx.fillText(yaxislabel,0,0);\
  5489.   ctx.restore();\
  5490. };\
  5491. };\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);
  5492.     break;
  5493.  
  5494.     case DRAW_GRID:/* not used for userdraw */
  5495. fprintf(js_include_file,"\n<!-- draw grid -->\n\
  5496. var draw_grid%d = function(canvas_type,precision,stroke_opacity,xmajor,ymajor,xminor,yminor,tics_length,line_width,stroke_color,axis_color,font_size,font_family,use_axis,use_axis_numbering,use_rotate,angle,use_affine,affine_matrix,use_dashed,dashtype0,dashtype1,font_color,fill_opacity){\
  5497. 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);};\
  5498. var ctx = obj.getContext(\"2d\");ctx.clearRect(0,0,xsize,ysize);\
  5499. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5500. ctx.save();\
  5501. if( use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);};\
  5502. if( use_rotate == 1 ){ctx.translate(x2px(0),y2px(0));ctx.rotate(angle*Math.PI/180);ctx.translate(-1*(x2px(0)),-1*(y2px(0)));};\
  5503. var stroke_color = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5504. ctx.fillStyle = \"rgba(\"+font_color+\",\"+1.0+\")\";\
  5505. var axis_color = \"rgba(\"+axis_color+\",\"+stroke_opacity+\")\";\
  5506. ctx.font = font_family;\
  5507. var barcolor = new Array();\
  5508. var xstep = xsize*xmajor/(xmax - xmin);\
  5509. var ystep = ysize*ymajor/(ymax - ymin);\
  5510. var x2step = xstep / xminor;\
  5511. var y2step = ystep / yminor;\
  5512. var zero_x = x2px(0);;var zero_y = y2px(0);var f_x;var f_y;\
  5513. if(xmin < 0 ){ f_x = -1;}else{ f_x = 1;}\
  5514. if(ymin < 0 ){ f_y = -1;}else{ f_y = 1;}\
  5515. ctx.beginPath();\
  5516. ctx.lineWidth = line_width;\
  5517. ctx.strokeStyle = stroke_color;\
  5518. for(var p = zero_x ; p < xsize; p = p + xstep){\
  5519. ctx.moveTo(p,0);\
  5520. ctx.lineTo(p,ysize);\
  5521. };\
  5522. for(var p = zero_x ; p > 0; p = p - xstep){\
  5523. ctx.moveTo(p,0);\
  5524. ctx.lineTo(p,ysize);\
  5525. };\
  5526. for(var p = zero_y ; p < ysize; p = p + ystep){\
  5527. ctx.moveTo(0,p);\
  5528. ctx.lineTo(xsize,p);\
  5529. };\
  5530. for(var p = zero_y ; p > 0; p = p - ystep){\
  5531. ctx.moveTo(0,p);\
  5532. ctx.lineTo(xsize,p);\
  5533. };\
  5534. if( typeof xaxislabel !== 'undefined' ){\
  5535. ctx.save();\
  5536. ctx.font = \"italic \"+font_size+\"px Ariel\";\
  5537. var corr =  ctx.measureText(xaxislabel).width;\
  5538. ctx.fillText(xaxislabel,xsize - 1.5*corr,zero_y - tics_length - 0.4*font_size);\
  5539. ctx.restore();\
  5540. };\
  5541. if( typeof yaxislabel !== 'undefined' ){\
  5542. ctx.save();\
  5543. ctx.font = \"italic \"+font_size+\"px Ariel\";\
  5544. var corr =  ctx.measureText(yaxislabel).width;\
  5545. ctx.translate(zero_x+tics_length + font_size,corr+font_size);\
  5546. ctx.rotate(-0.5*Math.PI);\
  5547. ctx.fillText(yaxislabel,0,0);\
  5548. ctx.restore();\
  5549. };\
  5550. ctx.stroke();\
  5551. ctx.closePath();\
  5552. if( use_axis == 1 ){\
  5553. ctx.save();\
  5554. ctx.beginPath();\
  5555. ctx.strokeStyle = stroke_color;\
  5556. ctx.lineWidth = 0.6*line_width;\
  5557. for(var p = zero_x ; p < xsize; p = p + x2step){\
  5558.  ctx.moveTo(p,0);\
  5559.  ctx.lineTo(p,ysize);\
  5560. };\
  5561. for(var p = zero_x ; p > 0; p = p - x2step){\
  5562.  ctx.moveTo(p,0);\
  5563.  ctx.lineTo(p,ysize);\
  5564. };\
  5565. for(var p = zero_y ; p < ysize; p = p + y2step){\
  5566.  ctx.moveTo(0,p);\
  5567.  ctx.lineTo(xsize,p);\
  5568. };\
  5569. for(var p = zero_y ; p > 0; p = p - y2step){\
  5570.  ctx.moveTo(0,p);\
  5571.  ctx.lineTo(xsize,p);\
  5572. };\
  5573. ctx.stroke();\
  5574. ctx.closePath();\
  5575. ctx.beginPath();\
  5576. ctx.lineWidth = 2*line_width;\
  5577. ctx.strokeStyle = axis_color;\
  5578. ctx.moveTo(0,zero_y);\
  5579. ctx.lineTo(xsize,zero_y);\
  5580. ctx.moveTo(zero_x,0);\
  5581. ctx.lineTo(zero_x,ysize);\
  5582. ctx.stroke();\
  5583. ctx.closePath();\
  5584. ctx.lineWidth = line_width+0.5;\
  5585. ctx.beginPath();\
  5586. for(var p = zero_x ; p < xsize; p = p + xstep){\
  5587.  ctx.moveTo(p,zero_y-tics_length);\
  5588.  ctx.lineTo(p,zero_y+tics_length);\
  5589. };\
  5590. for(var p = zero_x ; p > 0; p = p - xstep){\
  5591.  ctx.moveTo(p,zero_y-tics_length);\
  5592.  ctx.lineTo(p,zero_y+tics_length);\
  5593. };\
  5594. for(var p = zero_y ; p < ysize; p = p + ystep){\
  5595.  ctx.moveTo(zero_x-tics_length,p);\
  5596.  ctx.lineTo(zero_x+tics_length,p);\
  5597. };\
  5598. for(var p = zero_y ; p > 0; p = p - ystep){\
  5599.  ctx.moveTo(zero_x-tics_length,p);\
  5600.  ctx.lineTo(zero_x+tics_length,p);\
  5601. };\
  5602. for(var p = zero_x ; p < xsize; p = p + x2step){\
  5603.  ctx.moveTo(p,zero_y-0.5*tics_length);\
  5604.  ctx.lineTo(p,zero_y+0.5*tics_length);\
  5605. };\
  5606. for(var p = zero_x ; p > 0; p = p - x2step){\
  5607.  ctx.moveTo(p,zero_y-0.5*tics_length);\
  5608.  ctx.lineTo(p,zero_y+0.5*tics_length);\
  5609. };\
  5610. for(var p = zero_y ; p < ysize; p = p + y2step){\
  5611.  ctx.moveTo(zero_x-0.5*tics_length,p);\
  5612.  ctx.lineTo(zero_x+0.5*tics_length,p);\
  5613. };\
  5614. for(var p = zero_y ; p > 0; p = p - y2step){\
  5615.  ctx.moveTo(zero_x-0.5*tics_length,p);\
  5616.  ctx.lineTo(zero_x+0.5*tics_length,p);\
  5617. };\
  5618. ctx.stroke();\
  5619. ctx.closePath();\
  5620. ctx.restore();\
  5621. };\
  5622. if( use_axis_numbering == 1 ){\
  5623. ctx.save();\
  5624. ctx.fillColor = axis_color;\
  5625. ctx.strokeStyle = axis_color;\
  5626. ctx.lineWidth = 2*line_width;\
  5627. ctx.font = font_family;\
  5628. var shift = zero_y+2*font_size;var flip=0;var skip=0;var corr;var cnt;var disp_cnt;var prec;\
  5629. if( x_strings != null ){\
  5630.  var len = x_strings.length;if((len/2+0.5)%%2 == 0){ alert(\"xaxis number unpaired:  text missing ! \");return;};\
  5631.  ctx.beginPath();\
  5632.  for(var p = 0 ; p < len ; p = p+2){\
  5633.   var x_nums = x2px(eval(x_strings[p]));\
  5634.   var x_text = x_strings[p+1];\
  5635.   corr = ctx.measureText(x_text).width;\
  5636.   skip = 1.2*corr/xstep;\
  5637.   if( zero_y+2*font_size > ysize ){shift = ysize - 2*font_size;};\
  5638.   if( skip > 1 ){if(flip == 0 ){flip = 1; shift = shift + font_size;}else{flip = 0; shift = shift - font_size;}};\
  5639.   ctx.fillText(x_text,parseInt(x_nums-0.5*corr),shift);\
  5640.   ctx.moveTo(x_nums,zero_y - tics_length);\
  5641.   ctx.lineTo(x_nums,zero_y + tics_length);\
  5642.  };\
  5643.  ctx.closePath();\
  5644. }\
  5645. else\
  5646. {\
  5647.  skip = 1;cnt = px2x(zero_x);\
  5648.  prec = Math.log(precision)/(Math.log(10));\
  5649.  var y_basis;if(f_y == 1){ y_basis = ysize }else{ y_basis = zero_y + 1.4*font_size;};\
  5650.  for( var p = zero_x ; p < xsize ; p = p+xstep){\
  5651.   if(skip == 0 ){\
  5652.    disp_cnt = cnt.toFixed(prec);\
  5653.    corr = ctx.measureText(disp_cnt).width;\
  5654.    skip = parseInt(1.2*corr/xstep);\
  5655.    ctx.fillText(disp_cnt,p-0.5*corr,y_basis);\
  5656.   }\
  5657.   else\
  5658.   {\
  5659.    skip--;\
  5660.   };\
  5661.   cnt = cnt + xmajor;\
  5662.  };\
  5663.  cnt = px2x(zero_x);skip = 1;\
  5664.  for( var p = zero_x ; p > 0 ; p = p-xstep){\
  5665.   if(skip == 0 ){\
  5666.    disp_cnt = cnt.toFixed(prec);\
  5667.    corr = ctx.measureText(disp_cnt).width;\
  5668.    skip = parseInt(1.2*corr/xstep);\
  5669.    ctx.fillText(disp_cnt,p-0.5*corr,y_basis);\
  5670.   }\
  5671.   else\
  5672.   {\
  5673.    skip--;\
  5674.   };\
  5675.   cnt = cnt - xmajor;\
  5676.  };\
  5677. };\
  5678. if( y_strings != null ){\
  5679.  var len = y_strings.length;if((len/2+0.5)%%2 == 0){ alert(\"yaxis number unpaired:  text missing ! \");return;};\
  5680.  ctx.beginPath();\
  5681.  for(var p = 0 ; p < len ; p = p+2){\
  5682.   var y_nums = y2px(eval(y_strings[p]));\
  5683.   var y_text = y_strings[p+1];\
  5684.   corr = 2 + tics_length + ctx.measureText(y_text).width;\
  5685.   if( corr > zero_x){corr = parseInt(zero_x+2); }\
  5686.   ctx.fillText(y_text,zero_x - corr,y_nums + 0.5*font_size);\
  5687.   ctx.moveTo(zero_x - tics_length,y_nums);\
  5688.   ctx.lineTo(zero_x + tics_length,y_nums);\
  5689.  };\
  5690.  ctx.closePath();\
  5691. }\
  5692. else\
  5693. {\
  5694.  if(f_x == 1){ corr = 1.5*tics_length; }\
  5695.  cnt = px2y(zero_y);skip = 1;\
  5696.  for( var p = zero_y ; p < ysize ; p = p+ystep){\
  5697.   if(skip == 0 ){\
  5698.    skip = parseInt(1.4*font_size/ystep);\
  5699.    disp_cnt = cnt.toFixed(prec);\
  5700.    if(f_x == -1 ){ corr = parseInt(zero_x - (2 + tics_length + ctx.measureText(disp_cnt).width));};\
  5701.    ctx.fillText(disp_cnt,parseInt(corr),parseInt(p+(0.4*font_size)));\
  5702.   }\
  5703.   else\
  5704.   {\
  5705.    skip--;\
  5706.   };\
  5707.   cnt = cnt - ymajor;\
  5708.  };\
  5709.  corr = 0;cnt = px2y(zero_y);skip = 1;\
  5710.  if(f_x == 1){ corr = 1.5*tics_length; }\
  5711.  for( var p = zero_y ; p > 0 ; p = p-ystep){\
  5712.   if(skip == 0 ){\
  5713.    skip = parseInt(1.4*font_size/ystep);\
  5714.    disp_cnt = cnt.toFixed(prec);\
  5715.    if(f_x == -1 ){corr = parseInt(zero_x - (2 + tics_length + ctx.measureText(disp_cnt).width));};\
  5716.    ctx.fillText(disp_cnt,parseInt(corr),parseInt(p+(0.4*font_size)));\
  5717.   }\
  5718.   else\
  5719.   {\
  5720.    skip--;\
  5721.   };\
  5722.   cnt = cnt + ymajor;\
  5723.  };\
  5724. };\
  5725. ctx.stroke();\
  5726. ctx.restore();\
  5727. };\
  5728. if( typeof legend0  !== 'undefined' ){\
  5729. ctx.save();\
  5730. ctx.globalAlpha = 1.0;\
  5731. ctx.font = \"bold \"+font_size+\"px Ariel\";\
  5732. var y_offset = 2*font_size;\
  5733. var txt;var txt_size;\
  5734. var x_offset = xsize - 2*font_size;\
  5735. var l_length = legend0.length;\
  5736. if( typeof legendcolors0 !== 'undefined' ){\
  5737.  for(var p = 0 ; p < l_length ; p++){\
  5738.    barcolor[p] = legendcolors0[p];\
  5739.  };\
  5740. }\
  5741. else\
  5742. {\
  5743.  if( barcolor.length == 0 ){\
  5744.   for(var p = 0 ; p < l_length ; p++){\
  5745.    barcolor[p] = stroke_color;\
  5746.   };\
  5747.  };\
  5748. };\
  5749. for(var p = 0; p < l_length; p++){\
  5750.  ctx.fillStyle = barcolor[p];\
  5751.  txt = legend0[p];\
  5752.  txt_size = ctx.measureText(txt).width;\
  5753.  ctx.fillText(legend0[p],x_offset - txt_size, y_offset);\
  5754.  y_offset = parseInt(y_offset + 1.5*font_size);\
  5755. };\
  5756. ctx.restore();\
  5757. };\
  5758. if( typeof barchart_0  !== 'undefined' ){\
  5759. ctx.save();\
  5760. var num_barcharts = 0;\
  5761. var bar_name = eval('barchart_0');\
  5762. while( typeof bar_name !== 'undefined' ){\
  5763.    try{ bar_name = eval('barchart_'+num_barcharts);num_barcharts++;}catch(e){break;};\
  5764. };\
  5765. var bar_width = parseInt(0.8*xstep/(num_barcharts));\
  5766. for(var i=0 ; i< num_barcharts ; i++){\
  5767.  bar_name = eval('barchart_'+i);\
  5768.  var bar_x = new Array();\
  5769.  var bar_y = new Array();\
  5770.  var lb = bar_name.length;\
  5771.  var idx = 0;\
  5772.  var dx = parseInt(0.5*i*bar_width);\
  5773.  for( var p = 0 ; p < lb ; p = p + 3 ){\
  5774.   bar_x[idx] = x2px(bar_name[p]);\
  5775.   bar_y[idx] = y2px(bar_name[p+1]);\
  5776.   barcolor[idx] = bar_name[p+2];\
  5777.   idx++;\
  5778.  };\
  5779.  ctx.globalAlpha = fill_opacity;\
  5780.  ctx.beginPath();\
  5781.  for( var p = 0; p < idx ; p++ ){\
  5782.   ctx.strokeStyle = barcolor[p];\
  5783.   ctx.fillStyle = barcolor[p];\
  5784.   ctx.rect(bar_x[p]-0.4*xstep+dx,bar_y[p],bar_width,zero_y - bar_y[p]);\
  5785.  };\
  5786.  ctx.fill();\
  5787.  ctx.stroke();\
  5788.  ctx.closePath();\
  5789. };\
  5790. ctx.restore();\
  5791. };\
  5792. if( typeof linegraph_0 !== 'undefined' ){\
  5793. ctx.save();\
  5794. ctx.globalAlpha = 1.0;\
  5795. var i = 0;\
  5796. var line_name = eval('linegraph_'+i);\
  5797. while ( typeof line_name !== 'undefined' ){\
  5798.  ctx.strokeStyle = 'rgba('+line_name[0]+','+stroke_opacity+')';\
  5799.  ctx.lineWidth = parseInt(line_name[1]);\
  5800.  if(line_name[2] == \"1\"){\
  5801.   var d1 = parseInt(line_name[3]);\
  5802.   var d2 = parseInt(line_name[4]);\
  5803.   if(ctx.setLineDash){ ctx.setLineDash([d1,d2]); } else { ctx.mozDash = [d1,d2];};\
  5804.  }\
  5805.  else\
  5806.  {\
  5807.  if(ctx.setLineDash){ctx.setLineDash = null;}\
  5808.  if(ctx.mozDash){ctx.mozDash = null;}\
  5809.  };\
  5810.  var data_x = new Array();\
  5811.  var data_y = new Array();\
  5812.  var lb = line_name.length;\
  5813.  var idx = 0;\
  5814.  for( var p = 5 ; p < lb ; p = p + 2 ){\
  5815.   data_x[idx] = x2px(line_name[p]);\
  5816.   data_y[idx] = y2px(line_name[p+1]);\
  5817.   idx++;\
  5818.  };\
  5819.  for( var p = 0; p < idx ; p++){\
  5820.   ctx.beginPath();\
  5821.   ctx.moveTo(data_x[p],data_y[p]);\
  5822.   ctx.lineTo(data_x[p+1],data_y[p+1]);\
  5823.   ctx.stroke();\
  5824.   ctx.closePath();\
  5825.  };\
  5826.  i++;\
  5827.  try{ line_name = eval('linegraph_'+i); }catch(e){ break; }\
  5828. };\
  5829. ctx.restore();\
  5830. };\
  5831. return;\
  5832. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  5833.     break;
  5834.  
  5835.     case DRAW_PIECHART:
  5836. fprintf(js_include_file,"\n<!-- draw piecharts -->\n\
  5837. function draw_piechart(canvas_type,x_center,y_center,radius, data_color_list,fill_opacity,legend_cnt,font_family){\
  5838. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5839.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5840. }\
  5841. else\
  5842. {\
  5843.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5844. };\
  5845. var ld = data_color_list.length;\
  5846. var sum = 0;\
  5847. var idx = 0;\
  5848. var font_size = parseInt(font_family.replace(/[^0-9\\.]+/g, \"\"));\
  5849. var colors = new Array();\
  5850. var data = new Array();\
  5851. for(var p = 0;p < ld; p = p + 2){\
  5852.  data[idx] = parseFloat(data_color_list[p]);\
  5853.  sum = sum + data[idx];\
  5854.  colors[idx] = data_color_list[p+1];\
  5855.  idx++;\
  5856. };\
  5857. var ctx = obj.getContext(\"2d\");\
  5858. ctx.save();\
  5859. var angle;\
  5860. var angle_end = 0;\
  5861. var offset = Math.PI / 2;\
  5862. ctx.globalAlpha = fill_opacity;\
  5863. for(var p=0; p < idx; p++){\
  5864.  ctx.beginPath();\
  5865.  ctx.fillStyle = colors[p];\
  5866.  ctx.moveTo(x_center,y_center);\
  5867.  angle = Math.PI * (2 * data[p] / sum);\
  5868.  ctx.arc(x_center,y_center, radius, angle_end - offset, angle_end + angle - offset, false);\
  5869.  ctx.lineTo(x_center, y_center);\
  5870.  ctx.fill();\
  5871.  ctx.closePath();\
  5872.  angle_end  = angle_end + angle;\
  5873. };\
  5874. if(typeof legend0 !== 'undefined'){\
  5875.  var legenda = eval(\"legend\"+legend_cnt);\
  5876.  ctx.globalAlpha = 1.0;\
  5877.  ctx.font = font_family;\
  5878.  var y_offset = font_size; \
  5879.  var x_offset = 0;\
  5880.  var txt;var txt_size;\
  5881.  for(var p = 0; p < idx; p++){\
  5882.   ctx.fillStyle = colors[p];\
  5883.   txt = legenda[p];\
  5884.   txt_size = ctx.measureText(txt).width;\
  5885.   if( x_center + radius + txt_size > xsize ){ x_offset =  x_center + radius + txt_size - xsize;} else { x_offset = 0; };\
  5886.   ctx.fillText(txt,x_center + radius - x_offset, y_center - radius + y_offset);\
  5887.   y_offset = parseInt(y_offset + 1.5*font_size);\
  5888.  };\
  5889. };\
  5890. ctx.restore();\
  5891. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5892.  
  5893.     break;
  5894.     case DRAW_ARCS:
  5895. fprintf(js_include_file,"\n<!-- draw arcs -->\n\
  5896. var draw_arc = function(ctx,xc,yc,r,start,end,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_affine,affine_matrix){\
  5897. ctx.save();\
  5898. if( use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{if(ctx.mozDash){ ctx.mozDash = [dashtype0,dashtype1];};};};\
  5899. if( use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);};\
  5900. if( use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);};\
  5901. if(end < start){var tmp = end;end = start;start=tmp;};\
  5902. start = 360 - start;\
  5903. end = 360 - end;\
  5904. ctx.lineWidth = line_width;\
  5905. ctx.strokeStyle =  \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5906. ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";\
  5907. ctx.beginPath();\
  5908. ctx.moveTo(xc,yc);\
  5909. ctx.arc(xc, yc, r, start*(Math.PI / 180), end*(Math.PI / 180),true);\
  5910. ctx.lineTo(xc,yc);\
  5911. ctx.closePath();\
  5912. if( use_filled == 1 ){\
  5913.  ctx.fill();\
  5914. };\
  5915. ctx.stroke();\
  5916. ctx.restore();\
  5917. };");
  5918.  
  5919.     break;
  5920.     case DRAW_CENTERSTRING:
  5921. fprintf(js_include_file,"\n<!-- draw centerstring -->\n\
  5922. var draw_centerstring = function(canvas_type,y,font_family,stroke_color,stroke_opacity,text){\
  5923. var obj;\
  5924. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5925.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5926. }\
  5927. else\
  5928. {\
  5929.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5930. };\
  5931. var ctx = obj.getContext(\"2d\");\
  5932. ctx.save();\
  5933. ctx.font = font_family;\
  5934. ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5935. var stringwidth = ctx.measureText(text).width;\
  5936. var x = parseInt((xsize - stringwidth)/2);if( x < 0 ){x = 0;};\
  5937. ctx.fillText(text,x,y2px(y));\
  5938. return;\
  5939. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5940.     break;
  5941.     case DRAW_TEXTS:
  5942. fprintf(js_include_file,"\n<!-- draw text -->\n\
  5943. var draw_text = function(canvas_type,x,y,font_size,font_family,stroke_color,stroke_opacity,angle2,text,use_rotate,angle,use_affine,affine_matrix){\
  5944.  var obj;\
  5945.  if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5946.   obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5947.  }\
  5948.  else\
  5949.  {\
  5950.   obj = create_canvas%d(canvas_type,xsize,ysize);\
  5951.  };\
  5952.  var ctx = obj.getContext(\"2d\");\
  5953.  if(angle2 == 0 && angle != 0){\
  5954.   ctx.save();\
  5955.   if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5956.   if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5957.  };\
  5958.  if( font_family.indexOf('px') != null ){\
  5959.   ctx.font = font_family;\
  5960.  }\
  5961.  else\
  5962.  {\
  5963.   ctx.font = font_family;\
  5964.  };\
  5965.  ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5966.  if(angle2 != 0){\
  5967.   ctx.save();\
  5968.   ctx.translate(x,y);\
  5969.   ctx.rotate((360-angle2)*(Math.PI / 180));\
  5970.   ctx.fillText(text,0,0);\
  5971.   ctx.restore();\
  5972.  }else{ctx.fillText(text,x,y);};\
  5973. ctx.restore();\
  5974. return;\
  5975. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5976.     break;
  5977.     case DRAW_CURVE:
  5978. fprintf(js_include_file,"\n<!-- draw curve -->\n\
  5979. var draw_curve = function(canvas_type,type,x_points,y_points,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,use_rotate,angle,use_affine,affine_matrix){\
  5980. var obj;\
  5981. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5982.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5983. }\
  5984. else\
  5985. {\
  5986.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5987. };\
  5988. var ctx = obj.getContext(\"2d\");\
  5989. ctx.save();\
  5990. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5991. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5992. ctx.beginPath();ctx.lineWidth = line_width;\
  5993. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5994. ctx.strokeStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5995. ctx.moveTo(x2px(x_points[0]),y2px(y_points[0]));\
  5996. for(var p = 1 ; p < x_points.length ; p++){\
  5997.  if( y2px(y_points[p]) > -5 && y2px(y_points[p]) < ysize+5 ){\
  5998.  ctx.lineTo(x2px(x_points[p]),y2px(y_points[p]));\
  5999.  }\
  6000.  else\
  6001.  {\
  6002.   ctx.stroke();\
  6003.   ctx.beginPath();\
  6004.   p++;\
  6005.   ctx.moveTo(x2px(x_points[p]),y2px(y_points[p]));\
  6006.  };\
  6007. };\
  6008. ctx.stroke();\
  6009. ctx.restore();\
  6010. };",canvas_root_id,canvas_root_id,canvas_root_id);
  6011.     break;
  6012.  
  6013.     case DRAW_INPUTS:
  6014. fprintf(js_include_file,"\n<!-- draw input fields -->\n\
  6015. var draw_inputs = function(root_id,input_cnt,x,y,size,readonly,style,value){\
  6016. var canvas_div = document.getElementById(\"canvas_div\"+root_id);\
  6017. var input = document.createElement(\"input\");\
  6018. input.setAttribute(\"id\",\"canvas_input\"+input_cnt);\
  6019. input.setAttribute(\"style\",\"position:absolute;left:\"+x+\"px;top:\"+y+\"px;\"+style);\
  6020. input.setAttribute(\"size\",size);\
  6021. input.setAttribute(\"value\",value);\
  6022. if( readonly == 0 || wims_status == \"done\" ){ input.setAttribute(\"readonly\",\"readonly\");if( wims_status == \"done\" ){input.setAttribute(\"value\",\"\");};};\
  6023. canvas_div.appendChild(input);};");
  6024.     break;
  6025.  
  6026.     case DRAW_TEXTAREAS:
  6027. fprintf(js_include_file,"\n<!-- draw text area inputfields -->\n\
  6028. var draw_textareas = function(root_id,input_cnt,x,y,cols,rows,readonly,style,value){\
  6029. var canvas_div = document.getElementById(\"canvas_div\"+root_id);\
  6030. var textarea = document.createElement(\"textarea\");\
  6031. textarea.setAttribute(\"id\",\"canvas_input\"+input_cnt);\
  6032. textarea.setAttribute(\"style\",\"position:absolute;left:\"+x+\"px;top:\"+y+\"px;\"+style);\
  6033. textarea.setAttribute(\"cols\",cols);\
  6034. textarea.setAttribute(\"rows\",rows);\
  6035. textarea.value = value;\
  6036. if( readonly == 0 || wims_status == \"done\" ){ textarea.setAttribute(\"readonly\",\"readonly\");if( wims_status == \"done\" ){textarea.value=\"\";};};\
  6037. canvas_div.appendChild(textarea);};");
  6038.     break;
  6039.  
  6040. case DRAW_PIXELS:
  6041. fprintf(js_include_file,"\n<!-- draw pixel -->\n\
  6042. var draw_setpixel = function(x,y,color,opacity,pixelsize){\
  6043. var canvas = create_canvas%d(10,xsize,ysize);\
  6044. var d = 0.5*pixelsize;\
  6045. var ctx = canvas.getContext(\"2d\");\
  6046. ctx.fillStyle = \"rgba(\"+color+\",\"+opacity+\")\";\
  6047. ctx.clearRect(0,0,xsize,ysize);\
  6048. for(var p=0; p<x.length;p++){\
  6049.  ctx.fillRect( x2px(x[p]) - d, y2px(y[p]) - d , pixelsize, pixelsize );\
  6050. };\
  6051. ctx.fill();ctx.stroke();\
  6052. };",canvas_root_id);
  6053. break;
  6054.  
  6055. case DRAW_CLOCK:
  6056. fprintf(js_include_file,"\n<!-- begin command clock -->\n\
  6057. var clock_canvas = create_canvas%d(%d,xsize,ysize);\
  6058. var clock_ctx = clock_canvas.getContext(\"2d\");\
  6059. var clock = function(xc,yc,radius,H,M,S,type,interaction,h_color,m_color,s_color,bg_color,fg_color){\
  6060. clock_ctx.clearRect(xc - radius,yc - radius,2*radius,2*radius);\
  6061. clock_ctx.save();\
  6062. clock_ctx.globalAlpha = clock_bg_opacity;\
  6063. this.type = type || 0;\
  6064. this.interaction = interaction || 0;\
  6065. this.H = H;\
  6066. this.M = M;\
  6067. this.S = S;\
  6068. if(this.S == -1){this.S = 59;this.M = this.M - 1;};\
  6069. if(this.M == -1){this.M = 59;this.H = this.H - 1;};\
  6070. if(this.H == -1){this.H = 11;};\
  6071. this.xc = xc || xsize/2;\
  6072. this.yc = yc || ysize/2;\
  6073. this.radius = radius || xsize/4;\
  6074. var font_size = parseInt(0.2*this.radius);\
  6075. this.H_color = h_color || \"blue\";\
  6076. this.M_color = m_color || \"blue\";\
  6077. this.S_color = s_color || \"blue\";\
  6078. this.fg_color = fg_color || \"red\";\
  6079. this.bg_color = bg_color || \"white\";\
  6080. clock_ctx.translate(this.xc,this.yc);\
  6081. clock_ctx.beginPath();\
  6082. clock_ctx.arc(0,0,this.radius,0,2*Math.PI,false);\
  6083. clock_ctx.fillStyle = this.bg_color;\
  6084. clock_ctx.fill();\
  6085. clock_ctx.closePath();\
  6086. clock_ctx.beginPath();\
  6087. clock_ctx.font = font_size+\"px Arial\";\
  6088. clock_ctx.fillStyle = this.fg_color;\
  6089. clock_ctx.textAlign = \"center\";\
  6090. clock_ctx.textBaseline = 'middle';\
  6091. var angle;var x1,y1,x2,y2;\
  6092. var angle_cos;var angle_sin;\
  6093. clock_ctx.globalAlpha = clock_fg_opacity;\
  6094. switch(type){\
  6095. case 0:clock_ctx.beginPath();\
  6096. for(var p = 1; p <= 12 ; p++){\
  6097.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 12));\
  6098.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 12));\
  6099.  x1 = 0.8*angle_cos;y1 = 0.8*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  6100.  clock_ctx.moveTo(x1,y1);\
  6101.  clock_ctx.lineTo(x2,y2);\
  6102. };\
  6103. for(var p = 1; p <= 60 ; p++){\
  6104.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 60));\
  6105.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 60));\
  6106.  x1 = 0.9*angle_cos;y1 = 0.9*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  6107.  clock_ctx.moveTo(x1,y1);\
  6108.  clock_ctx.lineTo(x2,y2);\
  6109. };\
  6110. clock_ctx.closePath();\
  6111. clock_ctx.stroke();\
  6112. break;\
  6113. case 1:\
  6114. 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;\
  6115. case 2:\
  6116. 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);};\
  6117. clock_ctx.beginPath();\
  6118. for(var p = 1; p <= 12 ; p++){\
  6119.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 12));\
  6120.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 12));\
  6121.  x1 = 0.9*angle_cos;y1 = 0.9*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  6122.  clock_ctx.moveTo(x1,y1);\
  6123.  clock_ctx.lineTo(x2,y2);\
  6124. };\
  6125. for(var p = 1; p <= 60 ; p++){\
  6126.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 60));\
  6127.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 60));\
  6128.  x1 = 0.95*angle_cos;y1 = 0.95*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  6129.  clock_ctx.moveTo(x1,y1);\
  6130.  clock_ctx.lineTo(x2,y2);\
  6131. };\
  6132. clock_ctx.closePath();\
  6133. clock_ctx.stroke();\
  6134. break;\
  6135. };\
  6136. angle = (this.H - 3 + this.M/60 ) * 2 * Math.PI / 12;\
  6137. clock_ctx.rotate(angle);\
  6138. clock_ctx.beginPath();\
  6139. clock_ctx.moveTo(-3, -2);\
  6140. clock_ctx.lineTo(-3, 2);\
  6141. clock_ctx.lineTo(this.radius * 0.7, 1);\
  6142. clock_ctx.lineTo(this.radius  * 0.7, -1);\
  6143. clock_ctx.fillStyle = this.H_color;\
  6144. clock_ctx.fill();\
  6145. clock_ctx.rotate(-angle);\
  6146. angle = (this.M - 15 + this.S/60) * 2 * Math.PI / 60;\
  6147. clock_ctx.rotate(angle);\
  6148. clock_ctx.beginPath();\
  6149. clock_ctx.moveTo(-3, -2);\
  6150. clock_ctx.lineTo(-3, 2);\
  6151. clock_ctx.lineTo(this.radius  * 0.8, 1);\
  6152. clock_ctx.lineTo(this.radius  * 0.8, -1);\
  6153. clock_ctx.fillStyle = this.M_color;\
  6154. clock_ctx.fill();\
  6155. clock_ctx.rotate(-angle);\
  6156. angle = (this.S - 15) * 2 * Math.PI / 60;\
  6157. clock_ctx.rotate(angle);\
  6158. clock_ctx.beginPath();\
  6159. clock_ctx.moveTo(0,0);\
  6160. clock_ctx.lineTo(this.radius  * 0.95, 0);\
  6161. clock_ctx.lineTo(this.radius  * 0.9, -1);\
  6162. clock_ctx.strokeStyle = this.S_color;\
  6163. clock_ctx.stroke();\
  6164. clock_ctx.restore();\
  6165. };",canvas_root_id,CLOCK_CANVAS);
  6166. break;
  6167.  
  6168. case DRAW_LATTICE:
  6169. fprintf(js_include_file,"\n<!-- draw lattice -->\n\
  6170. var draw_lattice = function(canvas_type,line_width,x0,y0,dx1,dy1,dx2,dy2,n1,n2,fill_color,fill_opacity,stroke_color,stroke_opacity,use_rotate,angle,use_affine,affine_matrix){\
  6171. var obj;\
  6172. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6173.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6174. }\
  6175. else\
  6176. {\
  6177.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6178. };\
  6179. var ctx = obj.getContext(\"2d\");\
  6180. ctx.save();\
  6181. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  6182. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  6183. ctx.fillStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6184. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6185. var radius = line_width;\
  6186. var x = 0;\
  6187. var y = 0;\
  6188. var x_step_px = xsize/(xmax-xmin);\
  6189. var y_step_px = ysize/(ymax-ymin);\
  6190. var xv1 = dx1*x_step_px;\
  6191. var yv1 = dy1*y_step_px;\
  6192. var xv2 = dx2*x_step_px;\
  6193. var yv2 = dy2*y_step_px;\
  6194. for(var p = 0; p < n1 ;p++){\
  6195.  x = p*xv1 + x0;\
  6196.  y = p*yv1 + y0;\
  6197.  for(var c = 0; c < n2 ; c++){\
  6198.   ctx.beginPath();\
  6199.   ctx.arc(x+c*xv2,y+c*yv2,radius,0,2*Math.PI,false);\
  6200.   ctx.fill();\
  6201.   ctx.stroke();\
  6202.   ctx.closePath();\
  6203.  };\
  6204. };\
  6205. ctx.restore();\
  6206. return;\
  6207. };",canvas_root_id,canvas_root_id,canvas_root_id);
  6208.     break;
  6209. case DRAW_XYLOGSCALE:
  6210. fprintf(js_include_file,"\n<!-- draw xylogscale -->\n\
  6211. var draw_grid%d = function(canvas_type,line_width,major_color,minor_color,major_opacity,minor_opacity,font_size,font_family,font_color,use_axis_numbering,precision){\
  6212. var obj;\
  6213. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6214.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6215. }\
  6216. else\
  6217. {\
  6218.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6219. };\
  6220. var ctx = obj.getContext(\"2d\");\
  6221. ctx.clearRect(0,0,xsize,ysize);\
  6222. ctx.save();\
  6223. var xmarge;var ymarge;var x_e;var y_e;var num;var corr;var xtxt;var ytxt;\
  6224. var x_min = Math.log(xmin)/Math.log(xlogbase);\
  6225. var x_max = Math.log(xmax)/Math.log(xlogbase);\
  6226. var y_min = Math.log(ymin)/Math.log(ylogbase);\
  6227. var y_max = Math.log(ymax)/Math.log(ylogbase);\
  6228. if(use_axis_numbering == 1){\
  6229.  ctx.font = font_family;\
  6230.  xmarge = ctx.measureText(ylogbase+'^'+y_max.toFixed(0)+' ').width;\
  6231.  ymarge = parseInt(1.5*font_size);\
  6232.  ctx.save();\
  6233.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\
  6234.  ctx.rect(0,0,xmarge,ysize);\
  6235.  ctx.rect(0,ysize-ymarge,xsize,ysize);\
  6236.  ctx.fill();\
  6237.  ctx.restore();\
  6238. }else{xmarge = 0;ymarge = 0;};\
  6239. if( typeof xaxislabel !== 'undefined' ){\
  6240.  ctx.save();\
  6241.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6242.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6243.  corr =  ctx.measureText(xaxislabel).width;\
  6244.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\
  6245.  ctx.restore();\
  6246. };\
  6247. if( typeof yaxislabel !== 'undefined' ){\
  6248.  ctx.save();\
  6249.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6250.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6251.  corr = ctx.measureText(yaxislabel).width;\
  6252.  ctx.translate(xmarge+font_size,corr+font_size);\
  6253.  ctx.rotate(-0.5*Math.PI);\
  6254.  ctx.fillText(yaxislabel,0,0);\
  6255.  ctx.restore();\
  6256. };\
  6257. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6258. ctx.lineWidth = line_width;\
  6259. for(var p = x_min; p <= x_max ; p++){\
  6260.  num = Math.pow(xlogbase,p);\
  6261.  for(var i = 1 ; i < xlogbase ; i++){\
  6262.   x_e = x2px(i*num);\
  6263.   if( i == 1 ){\
  6264.    ctx.lineWidth = line_width;\
  6265.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6266.    if( use_axis_numbering == 1 && p > x_min){\
  6267.      xtxt = xlogbase+'^'+p.toFixed(0);\
  6268.      corr = 0.5*(ctx.measureText(xtxt).width);\
  6269.      ctx.fillText(xtxt,x_e - corr,ysize - 4);\
  6270.    };\
  6271.   }else{\
  6272.    ctx.lineWidth = 0.2*line_width;\
  6273.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6274.   };\
  6275.   if( x_e >= xmarge ){\
  6276.    ctx.beginPath();\
  6277.    ctx.moveTo(x_e,0);\
  6278.    ctx.lineTo(x_e,ysize - ymarge);\
  6279.    ctx.stroke();\
  6280.    ctx.closePath();\
  6281.   };\
  6282.  };\
  6283. };\
  6284. for(var p = y_min; p <= y_max ; p++){\
  6285.  num = Math.pow(ylogbase,p);\
  6286.  for(var i = 1 ; i < ylogbase ; i++){\
  6287.   y_e = y2px(i*num);\
  6288.   if( i == 1 ){\
  6289.    ctx.lineWidth = line_width;\
  6290.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6291.    if( use_axis_numbering == 1 && p > y_min){\
  6292.     ctx.fillText(ylogbase+'^'+p.toFixed(0),0,y_e);\
  6293.    };\
  6294.   }else{\
  6295.    ctx.lineWidth = 0.2*line_width;\
  6296.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6297.   };\
  6298.   ctx.beginPath();\
  6299.   ctx.moveTo(xmarge,y_e);\
  6300.   ctx.lineTo(xsize,y_e);\
  6301.   ctx.stroke();\
  6302.   ctx.closePath();\
  6303.  };\
  6304. };\
  6305. ctx.restore();\
  6306. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  6307.     break;
  6308.  
  6309. case DRAW_XLOGSCALE:
  6310. fprintf(js_include_file,"\n<!-- draw xlogscale -->\n\
  6311. var draw_grid%d = function(canvas_type,line_width,major_color,minor_color,major_opacity,minor_opacity,font_size,font_family,font_color,use_axis_numbering,ymajor,yminor,precision){\
  6312. var obj;\
  6313. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6314.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6315. }\
  6316. else\
  6317. {\
  6318.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6319. };\
  6320. var ctx = obj.getContext(\"2d\");\
  6321. ctx.clearRect(0,0,xsize,ysize);\
  6322. ctx.save();\
  6323. ctx.lineWidth = line_width;\
  6324. var prec = Math.log(precision)/Math.log(10);\
  6325. var x_min = Math.log(xmin)/Math.log(xlogbase);\
  6326. var x_max = Math.log(xmax)/Math.log(xlogbase);\
  6327. var y_min = 0;var y_max = ysize;var x_e;var corr;\
  6328. var xtxt;var ytxt;var num;var xmarge;var ymarge;\
  6329. if(use_axis_numbering == 1){\
  6330.  ctx.font = font_family;\
  6331.  xmarge = ctx.measureText(ymax.toFixed(prec)+' ').width;\
  6332.  ymarge = parseInt(1.5*font_size);\
  6333.  ctx.save();\
  6334.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\
  6335.  ctx.rect(0,0,xmarge,ysize);\
  6336.  ctx.rect(0,ysize-ymarge,xsize,ysize);\
  6337.  ctx.fill();\
  6338.  ctx.restore();\
  6339. }else{xmarge = 0;ymarge = 0;};\
  6340. if( typeof xaxislabel !== 'undefined' ){\
  6341.  ctx.save();\
  6342.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6343.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6344.  corr =  ctx.measureText(xaxislabel).width;\
  6345.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\
  6346.  ctx.restore();\
  6347. };\
  6348. if( typeof yaxislabel !== 'undefined' ){\
  6349.  ctx.save();\
  6350.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6351.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6352.  corr = ctx.measureText(yaxislabel).width;\
  6353.  ctx.translate(xmarge+font_size,corr+font_size);\
  6354.  ctx.rotate(-0.5*Math.PI);\
  6355.  ctx.fillText(yaxislabel,0,0);\
  6356.  ctx.restore();\
  6357. };\
  6358. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6359. ctx.lineWidth = line_width;\
  6360. for(var p = x_min; p <= x_max ; p++){\
  6361.  num = Math.pow(xlogbase,p);\
  6362.  for(var i = 1 ; i < xlogbase ; i++){\
  6363.   x_e = x2px(i*num);\
  6364.   if( i == 1 ){\
  6365.     ctx.lineWidth = line_width;\
  6366.     ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6367.    if( use_axis_numbering == 1 && p > x_min ){\
  6368.      xtxt = xlogbase+'^'+p.toFixed(0);\
  6369.      corr = 0.5*(ctx.measureText(xtxt).width);\
  6370.      ctx.fillText(xtxt,x_e - corr,ysize - 4);\
  6371.    };\
  6372.   }else{\
  6373.    ctx.lineWidth = 0.2*line_width;\
  6374.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6375.   };\
  6376.   if( x_e >= xmarge ){\
  6377.    ctx.beginPath();\
  6378.    ctx.moveTo(x_e,0);\
  6379.    ctx.lineTo(x_e,ysize - ymarge);\
  6380.    ctx.stroke();\
  6381.    ctx.closePath();\
  6382.   };\
  6383.  };\
  6384. };\
  6385. var stepy = Math.abs(y2px(ymajor) - y2px(0));\
  6386. var minor_step = stepy / yminor;\
  6387. for(var y = 0 ; y < ysize - stepy ; y = y + stepy){\
  6388.  ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6389.  ctx.lineWidth = line_width;\
  6390.  ctx.beginPath();\
  6391.  ctx.moveTo(xmarge,y);\
  6392.  ctx.lineTo(xsize,y);\
  6393.  ctx.stroke();\
  6394.  ctx.closePath();\
  6395.  if( use_axis_numbering == 1){\
  6396.   ytxt = (px2y(y)).toFixed(prec);\
  6397.   ctx.fillText( ytxt,0 ,y + 0.5*font_size );\
  6398.  };\
  6399.  for(var dy = 1 ; dy < yminor ; dy++){\
  6400.   ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6401.   ctx.lineWidth = 0.2*line_width;\
  6402.   ctx.beginPath();\
  6403.   ctx.moveTo(xmarge,y+dy*minor_step);\
  6404.   ctx.lineTo(xsize,y+dy*minor_step);\
  6405.   ctx.stroke();\
  6406.   ctx.closePath();\
  6407.  };\
  6408. };\
  6409. ctx.restore();\
  6410. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  6411.     break;
  6412. case DRAW_YLOGSCALE:
  6413. fprintf(js_include_file,"\n<!-- draw ylogscale -->\n\
  6414. var draw_grid%d = function(canvas_type,line_width,major_color,minor_color,major_opacity,minor_opacity,font_size,font_family,font_color,use_axis_numbering,xmajor,xminor,precision){\
  6415. var obj;\
  6416. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6417.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6418. }\
  6419. else\
  6420. {\
  6421.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6422. };\
  6423. var ctx = obj.getContext(\"2d\");\
  6424. ctx.clearRect(0,0,xsize,ysize);\
  6425. ctx.save();\
  6426. ctx.lineWidth = line_width;\
  6427. var y_min = Math.log(ymin)/Math.log(ylogbase);\
  6428. var y_max = Math.log(ymax)/Math.log(ylogbase);\
  6429. var x_min = 0;var x_max = xsize;var y_s;var y_e;var num;var xmarge;var ymarge;\
  6430. if(use_axis_numbering == 1){\
  6431.  ctx.font = font_family;\
  6432.  xmarge = ctx.measureText(ylogbase+\"^\"+y_max.toFixed(0)+' ').width;\
  6433.  ymarge = 2*font_size;\
  6434.  ctx.save();\
  6435.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\
  6436.  ctx.rect(0,0,xmarge,ysize);\
  6437.  ctx.rect(0,ysize-ymarge,xsize,ysize);\
  6438.  ctx.fill();\
  6439.  ctx.restore();\
  6440. }else{xmarge = 0;ymarge = 0;};\
  6441. if( typeof xaxislabel !== 'undefined' ){\
  6442.  ctx.save();\
  6443.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6444.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6445.  corr =  ctx.measureText(xaxislabel).width;\
  6446.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\
  6447.  ctx.restore();\
  6448. };\
  6449. if( typeof yaxislabel !== 'undefined' ){\
  6450.  ctx.save();\
  6451.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6452.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6453.  corr = ctx.measureText(yaxislabel).width;\
  6454.  ctx.translate(xmarge+font_size,corr+font_size);\
  6455.  ctx.rotate(-0.5*Math.PI);\
  6456.  ctx.fillText(yaxislabel,0,0);\
  6457.  ctx.restore();\
  6458. };\
  6459. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6460. ctx.lineWidth = line_width;\
  6461. for(var p = y_min; p <= y_max ; p++){\
  6462.  num = Math.pow(ylogbase,p);\
  6463.  for(var i = 1 ; i < ylogbase ; i++){\
  6464.   y_e = y2px(i*num);\
  6465.   if( i == 1 ){\
  6466.    ctx.lineWidth = line_width;\
  6467.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6468.    if( use_axis_numbering == 1 && p > y_min){\
  6469.     ctx.fillText(ylogbase+'^'+p.toFixed(0),0,y_e);\
  6470.    };\
  6471.   }else{\
  6472.    ctx.lineWidth = 0.2*line_width;\
  6473.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6474.   };\
  6475.   ctx.beginPath();\
  6476.   ctx.moveTo(xmarge,y_e);\
  6477.   ctx.lineTo(xsize,y_e);\
  6478.   ctx.stroke();\
  6479.   ctx.closePath();\
  6480.  };\
  6481. };\
  6482. var stepx = Math.abs(x2px(xmajor) - x2px(0));\
  6483. var minor_step = stepx / xminor;\
  6484. var prec = Math.log(precision)/Math.log(10);\
  6485. var xtxt;var corr;var flip = 0;\
  6486. for(var x = stepx ; x < xsize ; x = x + stepx){\
  6487.  ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6488.  ctx.lineWidth = line_width;\
  6489.  ctx.beginPath();\
  6490.  ctx.moveTo(x,ysize-ymarge);\
  6491.  ctx.lineTo(x,0);\
  6492.  ctx.stroke();\
  6493.  ctx.closePath();\
  6494.  if( use_axis_numbering == 1){\
  6495.   xtxt = (px2x(x)).toFixed(prec);\
  6496.   corr = 0.5*(ctx.measureText(xtxt).width);\
  6497.   if(flip == 0 ){flip = 1;ctx.fillText( xtxt,x - corr ,ysize - 0.2*font_size );}else{\
  6498.   flip = 0;ctx.fillText( xtxt,x - corr ,ysize - 1.2*font_size );};\
  6499.  };\
  6500.  for(var dx = 1 ; dx < xminor ; dx++){\
  6501.   ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6502.   ctx.lineWidth = 0.2*line_width;\
  6503.   ctx.beginPath();\
  6504.   ctx.moveTo(x+dx*minor_step,ysize - ymarge);\
  6505.   ctx.lineTo(x+dx*minor_step,0);\
  6506.   ctx.stroke();\
  6507.   ctx.closePath();\
  6508.  };\
  6509. };\
  6510. ctx.restore();\
  6511. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  6512.     break;
  6513.     default:break;
  6514.    }
  6515.   }
  6516.  }
  6517.   return;
  6518. }
  6519.  
  6520. void check_string_length(int L){
  6521.  if(L<1 || L > MAX_BUFFER-1){
  6522.   canvas_error("problem with your arguments to command...");
  6523.  }
  6524.  return;
  6525. }
  6526.  
  6527.  
  6528. int get_token(FILE *infile){
  6529.         int     c,i=0;
  6530.         char    temp[MAX_INT], *input_type;
  6531.         char    *line="line",
  6532.         *audio="audio",
  6533.         *blink="blink",
  6534.         *arrowhead="arrowhead",
  6535.         *crosshairsize="crosshairsize",
  6536.         *crosshair="crosshair",
  6537.         *crosshairs="crosshairs",
  6538.         *audioobject="audioobject",
  6539.         *style="style",
  6540.         *mouse="mouse",
  6541.         *mousex="mousex",
  6542.         *mousey="mousey",
  6543.         *mouse_display="display",
  6544.         *mouse_degree="mouse_degree",
  6545.         *userdraw="userdraw",
  6546.         *highlight="highlight",
  6547.         *http="http",
  6548.         *rays="rays",
  6549.         *dashtype="dashtype",
  6550.         *dashed="dashed",
  6551.         *filled="filled",
  6552.         *lattice="lattice",
  6553.         *parallel="parallel",
  6554.         *segment="segment",
  6555.         *dsegment="dsegment",
  6556.         *seg="seg",
  6557.         *bgimage="bgimage",
  6558.         *bgcolor="bgcolor",
  6559.         *strokecolor="strokecolor",
  6560.         *backgroundimage="backgroundimage",
  6561.         *text="text",
  6562.         *textup="textup",
  6563.         *mouseprecision="mouseprecision",
  6564.         *precision="precision",
  6565.         *plotsteps="plotsteps",
  6566.         *plotstep="plotstep",
  6567.         *tsteps="tsteps",
  6568.         *curve="curve",
  6569.         *dcurve="dcurve",
  6570.         *plot="plot",
  6571.         *dplot="dplot",
  6572.         *levelcurve="levelcurve",
  6573.         *fontsize="fontsize",
  6574.         *fontcolor="fontcolor",
  6575.         *axis="axis",
  6576.         *axisnumbering="axisnumbering",
  6577.         *axisnumbers="axisnumbers",
  6578.         *arrow="arrow",
  6579.         *darrow="darrow",
  6580.         *arrow2="arrow2",
  6581.         *darrow2="darrow2",
  6582.         *zoom="zoom",
  6583.         *grid="grid",
  6584.         *hline="hline",
  6585.         *dhline="dhline",
  6586.         *drag="drag",
  6587.         *horizontalline="horizontalline",
  6588.         *vline="vline",
  6589.         *dvline="dvline",
  6590.         *verticalline="verticalline",
  6591.         *triangle="triangle",
  6592.         *ftriangle="ftriangle",
  6593.         *mathml="mathml",
  6594.         *html="html",
  6595.         *input="input",
  6596.         *clearbutton="clearbutton",
  6597.         *inputstyle="inputstyle",
  6598.         *textarea="textarea",
  6599.         *trange="trange",
  6600.         *ranget="ranget",
  6601.         *xrange="xrange",
  6602.         *yrange="yrange",
  6603.         *rangex="rangex",
  6604.         *rangey="rangey",
  6605.         *polyline="polyline",
  6606.         *lines="lines",
  6607.         *poly="poly",
  6608.         *polygon="polygon",
  6609.         *fpolygon="fpolygon",
  6610.         *fpoly="fpoly",
  6611.         *filledpoly="filledpoly",
  6612.         *filledpolygon="filledpolygon",
  6613.         *rect="rect",
  6614.         *frect="frect",
  6615.         *rectangle="rectangle",
  6616.         *frectangle="frectangle",
  6617.         *square="square",
  6618.         *fsquare="fsquare",
  6619.         *dline="dline",
  6620.         *arc="arc",
  6621.         *filledarc="filledarc",
  6622.         *size="size",
  6623.         *string="string",
  6624.         *stringup="stringup",
  6625.         *copy="copy",
  6626.         *copyresized="copyresized",
  6627.         *opacity="opacity",
  6628.         *transparent="transparent",
  6629.         *fill="fill",
  6630.         *point="point",
  6631.         *points="points",
  6632.         *linewidth="linewidth",
  6633.         *circle="circle",
  6634.         *fcircle="fcircle",
  6635.         *disk="disk",
  6636.         *comment="#",
  6637.         *end="end",
  6638.         *ellipse="ellipse",
  6639.         *fellipse="fellipse",
  6640.         *rotate="rotate",
  6641.         *affine="affine",
  6642.         *killaffine="killaffine",
  6643.         *fontfamily="fontfamily",
  6644.         *fillcolor="fillcolor",
  6645.         *clicktile="clicktile",
  6646.         *clicktile_colors="clicktile_colors",
  6647.         *translation="translation",
  6648.         *translate="translate",
  6649.         *killtranslation="killtranslation",
  6650.         *killtranslate="killtranslate",
  6651.         *onclick="onclick",
  6652.         *roundrect="roundrect",
  6653.         *froundrect="froundrect",
  6654.         *roundrectangle="roundrectangle",
  6655.         *patternfill="patternfill",
  6656.         *hatchfill="hatchfill",
  6657.         *diafill="diafill",
  6658.         *diamondfill="diamondfill",
  6659.         *dotfill="dotfill",
  6660.         *gridfill="gridfill",
  6661.         *imagefill="imagefill",
  6662.         *xlogbase="xlogbase",
  6663.         *ylogbase="ylogbase",
  6664.         *xlogscale="xlogscale",
  6665.         *ylogscale="ylogscale",
  6666.         *xylogscale="xylogscale",
  6667.         *intooltip="intooltip",
  6668.         *replyformat="replyformat",
  6669.         *floodfill="floodfill",
  6670.         *filltoborder="filltoborder",
  6671.         *clickfill="clickfill",
  6672.         *setpixel="setpixel",
  6673.         *pixels="pixels",
  6674.         *pixelsize="pixelsize",
  6675.         *clickfillmarge="clickfillmarge",
  6676.         *xaxis="xaxis",
  6677.         *yaxis="yaxis",
  6678.         *xaxistext="xaxistext",
  6679.         *yaxistext="yaxistext",
  6680.         *piechart="piechart",
  6681.         *legend="legend",
  6682.         *legendcolors="legendcolors",
  6683.         *xlabel="xlabel",
  6684.         *ylabel="ylabel",
  6685.         *barchart="barchart",
  6686.         *linegraph="linegraph",
  6687.         *clock="clock",
  6688.         *animate="animate",
  6689.         *video="video",
  6690.         *status="status",
  6691.         *nostatus="nostatus",
  6692.         *snaptogrid="snaptogrid",
  6693.         *xsnaptogrid="xsnaptogrid",
  6694.         *ysnaptogrid="ysnaptogrid",
  6695.         *userinput_xy="userinput_xy",
  6696.         *userinput_function="userinput_function",
  6697.         *usertextarea_xy="usertextarea_xy",
  6698.         *userinput="userinput",
  6699.         *jsmath="jsmath",
  6700.         *trace_jscurve="trace_jscurve",
  6701.         *setlimits="setlimits",
  6702.         *jscurve="jscurve",
  6703.         *jsplot="jsplot",
  6704.         *sgraph="sgraph",
  6705.         *title="title",
  6706.         *centerstring="centerstring",
  6707.         *xunit="xunit",
  6708.         *yunit="yunit",
  6709.         *slider="slider",
  6710.         *killslider="killslider",
  6711.         *angle="angle";
  6712.  
  6713.         while(((c = getc(infile)) != EOF)&&(c!='\n')&&(c!=',')&&(c!='=')&&(c!='\r')){
  6714.             if( i == 0 && (c == ' ' || c == '\t') ){
  6715.         continue; /* white spaces or tabs allowed before first command identifier */
  6716.             }
  6717.             else
  6718.             {
  6719.         if( c == ' ' || c == '\t' ){
  6720.             break;
  6721.         }
  6722.         else
  6723.         {
  6724.             temp[i] = c;
  6725.             if(i > MAX_INT - 2){canvas_error("command string too long !");}
  6726.             i++;
  6727.         }
  6728.             }
  6729.             if(temp[0] == '#') break;
  6730.         }
  6731.         if (c == EOF) finished = 1;
  6732.  
  6733.         if (c == '\n' || c == '\r') {
  6734.         line_number++;
  6735.         if (i == 0) { return EMPTY; }
  6736.         } else if (c == EOF) {
  6737.         return 0;
  6738.         }
  6739.  
  6740.         temp[i]='\0';
  6741.         input_type=(char*)my_newmem(strlen(temp));
  6742.         snprintf(input_type,sizeof(temp),"%s",temp);
  6743.  
  6744.         if( strcmp(input_type, size) == 0 ){
  6745.         free(input_type);
  6746.         return SIZE;
  6747.         }
  6748.         if( strcmp(input_type, xrange) == 0 ){
  6749.         free(input_type);
  6750.         return XRANGE;
  6751.         }
  6752.         if( strcmp(input_type, rangex) == 0 ){
  6753.         free(input_type);
  6754.         return XRANGE;
  6755.         }
  6756.         if( strcmp(input_type, trange) == 0 ){
  6757.         free(input_type);
  6758.         return TRANGE;
  6759.         }
  6760.         if( strcmp(input_type, ranget) == 0 ){
  6761.         free(input_type);
  6762.         return TRANGE;
  6763.         }
  6764.         if( strcmp(input_type, yrange) == 0 ){
  6765.         free(input_type);
  6766.         return YRANGE;
  6767.         }
  6768.         if( strcmp(input_type, rangey) == 0 ){
  6769.         free(input_type);
  6770.         return YRANGE;
  6771.         }
  6772.         if( strcmp(input_type, linewidth) == 0 ){
  6773.         free(input_type);
  6774.         return LINEWIDTH;
  6775.         }
  6776.         if( strcmp(input_type, dashed) == 0 ){
  6777.         free(input_type);
  6778.         return DASHED;
  6779.         }
  6780.         if( strcmp(input_type, dashtype) == 0 ){
  6781.         free(input_type);
  6782.         return DASHTYPE;
  6783.         }
  6784.         if( strcmp(input_type, axisnumbering) == 0 ){
  6785.         free(input_type);
  6786.         return AXIS_NUMBERING;
  6787.         }
  6788.         if( strcmp(input_type, axisnumbers) == 0 ){
  6789.         free(input_type);
  6790.         return AXIS_NUMBERING;
  6791.         }
  6792.         if( strcmp(input_type, axis) == 0 ){
  6793.         free(input_type);
  6794.         return AXIS;
  6795.         }
  6796.         if( strcmp(input_type, grid) == 0 ){
  6797.         free(input_type);
  6798.         return GRID;
  6799.         }
  6800.         if( strcmp(input_type, parallel) == 0 ){
  6801.         free(input_type);
  6802.         return PARALLEL;
  6803.         }
  6804.         if( strcmp(input_type, hline) == 0 ||  strcmp(input_type, horizontalline) == 0 ){
  6805.         free(input_type);
  6806.         return HLINE;
  6807.         }
  6808.         if( strcmp(input_type, vline) == 0 ||  strcmp(input_type, verticalline) == 0 ){
  6809.         free(input_type);
  6810.         return VLINE;
  6811.         }
  6812.         if( strcmp(input_type, line) == 0 ){
  6813.         free(input_type);
  6814.         return LINE;
  6815.         }
  6816.         if( strcmp(input_type, seg) == 0 ||  strcmp(input_type, segment) == 0 ){
  6817.         free(input_type);
  6818.         return SEGMENT;
  6819.         }
  6820.         if( strcmp(input_type, dsegment) == 0 ){
  6821.         free(input_type);
  6822.         use_dashed = TRUE;
  6823.         return SEGMENT;
  6824.         }
  6825.         if( strcmp(input_type, crosshairsize) == 0 ){
  6826.         free(input_type);
  6827.         return CROSSHAIRSIZE;
  6828.         }
  6829.         if( strcmp(input_type, arrowhead) == 0 ){
  6830.         free(input_type);
  6831.         return ARROWHEAD;
  6832.         }
  6833.         if( strcmp(input_type, crosshairs) == 0 ){
  6834.         free(input_type);
  6835.         return CROSSHAIRS;
  6836.         }
  6837.         if( strcmp(input_type, crosshair) == 0 ){
  6838.         free(input_type);
  6839.         return CROSSHAIR;
  6840.         }
  6841.         if( strcmp(input_type, onclick) == 0 ){
  6842.         free(input_type);
  6843.         return ONCLICK;
  6844.         }
  6845.         if( strcmp(input_type, drag) == 0 ){
  6846.         free(input_type);
  6847.         return DRAG;
  6848.         }
  6849.         if( strcmp(input_type, userdraw) == 0 ){
  6850.         free(input_type);
  6851.         return USERDRAW;
  6852.         }
  6853.         if( strcmp(input_type, highlight) == 0 || strcmp(input_type, style) == 0 ){
  6854.         free(input_type);
  6855.         return STYLE;
  6856.         }
  6857.         if( strcmp(input_type, fillcolor) == 0 ){
  6858.         free(input_type);
  6859.         return FILLCOLOR;
  6860.         }
  6861.         if( strcmp(input_type, strokecolor) == 0 ){
  6862.         free(input_type);
  6863.         return STROKECOLOR;
  6864.         }
  6865.         if( strcmp(input_type, filled) == 0  ){
  6866.         free(input_type);
  6867.         return FILLED;
  6868.         }
  6869.         if( strcmp(input_type, http) == 0 ){
  6870.         free(input_type);
  6871.         return HTTP;
  6872.         }
  6873.         if( strcmp(input_type, rays) == 0 ){
  6874.         free(input_type);
  6875.         return RAYS;
  6876.         }
  6877.         if( strcmp(input_type, lattice) == 0 ){
  6878.         free(input_type);
  6879.         return LATTICE;
  6880.         }
  6881.         if( strcmp(input_type, bgimage) == 0 ){
  6882.         free(input_type);
  6883.         return BGIMAGE;
  6884.         }
  6885.         if( strcmp(input_type, bgcolor) == 0 ){
  6886.         free(input_type);
  6887.         return BGCOLOR;
  6888.         }
  6889.         if( strcmp(input_type, backgroundimage) == 0 ){
  6890.         free(input_type);
  6891.         return BGIMAGE;
  6892.         }
  6893.         if( strcmp(input_type, text) == 0 ){
  6894.         free(input_type);
  6895.         return FLY_TEXT;
  6896.         }
  6897.         if( strcmp(input_type, textup) == 0 ){
  6898.         free(input_type);
  6899.         return FLY_TEXTUP;
  6900.         }
  6901.         if( strcmp(input_type, mouse) == 0 ){
  6902.         free(input_type);
  6903.         return MOUSE;
  6904.         }
  6905.         if( strcmp(input_type, mousex) == 0 ){
  6906.         free(input_type);
  6907.         return MOUSEX;
  6908.         }
  6909.         if( strcmp(input_type, mousey) == 0 ){
  6910.         free(input_type);
  6911.         return MOUSEY;
  6912.         }
  6913.         if( strcmp(input_type, mouse_degree) == 0 ){
  6914.         free(input_type);
  6915.         return MOUSE_DEGREE;
  6916.         }
  6917.         if( strcmp(input_type, mouse_display) == 0 ){
  6918.         free(input_type);
  6919.         return MOUSE_DISPLAY;
  6920.         }
  6921.         if( strcmp(input_type, mouseprecision) == 0 ){
  6922.         free(input_type);
  6923.         return MOUSE_PRECISION;
  6924.         }
  6925.         if( strcmp(input_type, precision) == 0 ){
  6926.         free(input_type);
  6927.         return MOUSE_PRECISION;
  6928.         }
  6929.         if( strcmp(input_type, curve) == 0 ){
  6930.         free(input_type);
  6931.         return CURVE;
  6932.         }
  6933.         if( strcmp(input_type, dcurve) == 0 ){
  6934.         use_dashed = TRUE;
  6935.         free(input_type);
  6936.         return CURVE;
  6937.         }
  6938.         if( strcmp(input_type, plot) == 0 ){
  6939.         free(input_type);
  6940.         return CURVE;
  6941.         }
  6942.         if( strcmp(input_type, dplot) == 0 ){
  6943.         use_dashed = TRUE;
  6944.         free(input_type);
  6945.         return CURVE;
  6946.         }
  6947.         if( strcmp(input_type, levelcurve) == 0 ){
  6948.         free(input_type);
  6949.         return LEVELCURVE;
  6950.         }
  6951.         if( strcmp(input_type, plotsteps) == 0 ){
  6952.         free(input_type);
  6953.         return PLOTSTEPS;
  6954.         }
  6955.         if( strcmp(input_type, plotstep) == 0 ){
  6956.         free(input_type);
  6957.         return PLOTSTEPS;
  6958.         }
  6959.         if( strcmp(input_type, tsteps) == 0 ){
  6960.         free(input_type);
  6961.         return PLOTSTEPS;
  6962.         }
  6963.         if( strcmp(input_type, fontsize) == 0 ){
  6964.         free(input_type);
  6965.         return FONTSIZE;
  6966.         }
  6967.         if( strcmp(input_type, fontcolor) == 0 ){
  6968.         free(input_type);
  6969.         return FONTCOLOR;
  6970.         }
  6971.         if( strcmp(input_type, arrow) == 0 ){
  6972.         free(input_type);
  6973.         return ARROW;
  6974.         }
  6975.         if( strcmp(input_type, arrow2) == 0 ){
  6976.         free(input_type);
  6977.         return ARROW2;
  6978.         }
  6979.         if( strcmp(input_type, darrow) == 0 ){
  6980.         free(input_type);
  6981.         use_dashed = TRUE;
  6982.         return ARROW;
  6983.         }
  6984.         if( strcmp(input_type, darrow2) == 0 ){
  6985.         free(input_type);
  6986.         use_dashed = TRUE;
  6987.         return ARROW2;
  6988.         }
  6989.         if( strcmp(input_type, zoom) == 0 ){
  6990.         free(input_type);
  6991.         return ZOOM;
  6992.         }
  6993.         if( strcmp(input_type, triangle) == 0 ){
  6994.         free(input_type);
  6995.         return TRIANGLE;
  6996.         }
  6997.         if( strcmp(input_type, ftriangle) == 0 ){
  6998.         free(input_type);
  6999.         use_filled = TRUE;
  7000.         return TRIANGLE;
  7001.         }
  7002.         if( strcmp(input_type, input) == 0 ){
  7003.         free(input_type);
  7004.         return INPUT;
  7005.         }
  7006.         if( strcmp(input_type, inputstyle) == 0 ){
  7007.         free(input_type);
  7008.         return INPUTSTYLE;
  7009.         }
  7010.         if( strcmp(input_type, textarea) == 0 ){
  7011.         free(input_type);
  7012.         return TEXTAREA;
  7013.         }
  7014.         if( strcmp(input_type, mathml) == 0 ){
  7015.         free(input_type);
  7016.         return MATHML;
  7017.         }
  7018.         if( strcmp(input_type, html) == 0 ){
  7019.         free(input_type);
  7020.         return MATHML;
  7021.         }
  7022.         if( strcmp(input_type, fontfamily) == 0 ){
  7023.         free(input_type);
  7024.         return FONTFAMILY;
  7025.         }
  7026.         if( strcmp(input_type, lines) == 0  ||  strcmp(input_type, polyline) == 0 ){
  7027.         free(input_type);
  7028.         return POLYLINE;
  7029.         }
  7030.         if( strcmp(input_type, rect) == 0  ||  strcmp(input_type, rectangle) == 0 ){
  7031.         free(input_type);
  7032.         return RECT;
  7033.         }
  7034.         if( strcmp(input_type, roundrect) == 0  ||  strcmp(input_type, roundrectangle) == 0 ){
  7035.         free(input_type);
  7036.         return ROUNDRECT;
  7037.         }
  7038.         if( strcmp(input_type, froundrect) == 0 ){
  7039.         free(input_type);
  7040.         use_filled = TRUE;
  7041.         return ROUNDRECT;
  7042.         }
  7043.         if( strcmp(input_type, square) == 0 ){
  7044.         free(input_type);
  7045.         return SQUARE;
  7046.         }
  7047.         if( strcmp(input_type, fsquare) == 0 ){
  7048.         free(input_type);
  7049.         use_filled = TRUE;
  7050.         return SQUARE;
  7051.         }
  7052.         if( strcmp(input_type, dline) == 0 ){
  7053.         use_dashed = TRUE;
  7054.         free(input_type);
  7055.         return LINE;
  7056.         }
  7057.         if( strcmp(input_type, dvline) == 0 ){
  7058.         use_dashed = TRUE;
  7059.         free(input_type);
  7060.         return VLINE;
  7061.         }
  7062.         if( strcmp(input_type, dhline) == 0 ){
  7063.         use_dashed = TRUE;
  7064.         free(input_type);
  7065.         return HLINE;
  7066.         }
  7067.         if( strcmp(input_type, frect) == 0 || strcmp(input_type, frectangle) == 0 ){
  7068.         use_filled = TRUE;
  7069.         free(input_type);
  7070.         return RECT;
  7071.         }
  7072.         if( strcmp(input_type, fcircle) == 0  ||  strcmp(input_type, disk) == 0 ){
  7073.         use_filled = TRUE;
  7074.         free(input_type);
  7075.         return CIRCLE;
  7076.         }
  7077.         if( strcmp(input_type, circle) == 0 ){
  7078.         free(input_type);
  7079.         return CIRCLE;
  7080.         }
  7081.         if( strcmp(input_type, point) == 0 ){
  7082.         free(input_type);
  7083.         return POINT;
  7084.         }
  7085.         if( strcmp(input_type, points) == 0 ){
  7086.         free(input_type);
  7087.         return POINTS;
  7088.         }
  7089.         if( strcmp(input_type, filledarc) == 0 ){
  7090.         use_filled = TRUE;
  7091.         free(input_type);
  7092.         return ARC;
  7093.         }
  7094.         if( strcmp(input_type, arc) == 0 ){
  7095.         free(input_type);
  7096.         return ARC;
  7097.         }
  7098.         if( strcmp(input_type, poly) == 0 ||  strcmp(input_type, polygon) == 0 ){
  7099.         free(input_type);
  7100.         return POLY;
  7101.         }
  7102.         if( strcmp(input_type, fpoly) == 0 ||  strcmp(input_type, filledpoly) == 0 || strcmp(input_type,filledpolygon) == 0  || strcmp(input_type,fpolygon) == 0  ){
  7103.         use_filled = TRUE;
  7104.         free(input_type);
  7105.         return POLY;
  7106.         }
  7107.         if( strcmp(input_type, ellipse) == 0){
  7108.         free(input_type);
  7109.         return ELLIPSE;
  7110.         }
  7111.         if( strcmp(input_type, fill) == 0 ){
  7112.         free(input_type);
  7113.         return FLOODFILL;
  7114.         }
  7115.         if( strcmp(input_type, string) == 0 ){
  7116.         free(input_type);
  7117.         return STRING;
  7118.         }
  7119.         if( strcmp(input_type, stringup) == 0 ){
  7120.         free(input_type);
  7121.         return STRINGUP;
  7122.         }
  7123.         if( strcmp(input_type, opacity) == 0 ){
  7124.         free(input_type);
  7125.         return OPACITY;
  7126.         }
  7127.         if( strcmp(input_type, comment) == 0){
  7128.         free(input_type);
  7129.         return COMMENT;
  7130.         }
  7131.         if( strcmp(input_type, end) == 0){
  7132.         free(input_type);
  7133.         return END;
  7134.         }
  7135.         if( strcmp(input_type, fellipse) == 0){
  7136.         free(input_type);
  7137.         use_filled = TRUE;
  7138.         return ELLIPSE;
  7139.         }
  7140.         if( strcmp(input_type, blink) == 0 ){
  7141.         free(input_type);
  7142.         return BLINK;
  7143.         }
  7144.         if( strcmp(input_type, clearbutton) == 0){
  7145.         free(input_type);
  7146.         return CLEARBUTTON;
  7147.         }
  7148.         if( strcmp(input_type, translation) == 0 ||  strcmp(input_type, translate) == 0  ){
  7149.         free(input_type);
  7150.         return TRANSLATION;
  7151.         }
  7152.         if( strcmp(input_type, killtranslation) == 0 ||  strcmp(input_type, killtranslate) == 0){
  7153.         free(input_type);
  7154.         return KILLTRANSLATION;
  7155.         }
  7156.         if( strcmp(input_type, rotate) == 0){
  7157.         free(input_type);
  7158.         return ROTATE;
  7159.         }
  7160.         if( strcmp(input_type, affine) == 0){
  7161.         free(input_type);
  7162.         return AFFINE;
  7163.         }
  7164.         if( strcmp(input_type, killaffine) == 0){
  7165.         free(input_type);
  7166.         return KILLAFFINE;
  7167.         }
  7168.         if( strcmp(input_type, audio) == 0 ){
  7169.         free(input_type);
  7170.         return AUDIO;
  7171.         }
  7172.         if( strcmp(input_type, audioobject) == 0 ){
  7173.         free(input_type);
  7174.         return AUDIOOBJECT;
  7175.         }
  7176.         if( strcmp(input_type, slider) == 0 ){
  7177.         free(input_type);
  7178.         return SLIDER;
  7179.         }
  7180.         if( strcmp(input_type, killslider) == 0 ){
  7181.         free(input_type);
  7182.         return KILLSLIDER;
  7183.         }
  7184.         if( strcmp(input_type, copy) == 0 ){
  7185.         free(input_type);
  7186.         return COPY;
  7187.         }
  7188.         if( strcmp(input_type, copyresized) == 0 ){
  7189.         free(input_type);
  7190.         return COPYRESIZED;
  7191.         }
  7192.         if( strcmp(input_type, patternfill) == 0 ){
  7193.         free(input_type);
  7194.         return PATTERNFILL;
  7195.         }
  7196.         if( strcmp(input_type, hatchfill) == 0 ){
  7197.         free(input_type);
  7198.         return HATCHFILL;
  7199.         }
  7200.         if( strcmp(input_type, diafill) == 0  || strcmp(input_type, diamondfill) == 0  ){
  7201.         free(input_type);
  7202.         return DIAMONDFILL;
  7203.         }
  7204.         if( strcmp(input_type, dotfill) == 0 ){
  7205.         free(input_type);
  7206.         return DOTFILL;
  7207.         }
  7208.         if( strcmp(input_type, gridfill) == 0 ){
  7209.         free(input_type);
  7210.         return GRIDFILL;
  7211.         }
  7212.         if( strcmp(input_type, imagefill) == 0 ){
  7213.         free(input_type);
  7214.         return IMAGEFILL;
  7215.         }
  7216.         if( strcmp(input_type, clicktile_colors) == 0 ){
  7217.         free(input_type);
  7218.         return CLICKTILE_COLORS;
  7219.         }
  7220.         if( strcmp(input_type, clicktile) == 0 ){
  7221.         free(input_type);
  7222.         return CLICKTILE;
  7223.         }
  7224.         if( strcmp(input_type, xlogscale) == 0 ){
  7225.         free(input_type);
  7226.         return XLOGSCALE;
  7227.         }
  7228.         if( strcmp(input_type, ylogscale) == 0 ){
  7229.         free(input_type);
  7230.         return YLOGSCALE;
  7231.         }
  7232.         if( strcmp(input_type, xylogscale) == 0 ){
  7233.         free(input_type);
  7234.         return XYLOGSCALE;
  7235.         }
  7236.         if( strcmp(input_type, ylogscale) == 0 ){
  7237.         free(input_type);
  7238.         return YLOGSCALE;
  7239.         }
  7240.         if( strcmp(input_type, xlogbase) == 0 ){
  7241.         free(input_type);
  7242.         return XLOGBASE;
  7243.         }
  7244.         if( strcmp(input_type, ylogbase) == 0 ){
  7245.         free(input_type);
  7246.         return YLOGBASE;
  7247.         }
  7248.         if( strcmp(input_type, intooltip) == 0 ){
  7249.         free(input_type);
  7250.         return INTOOLTIP;
  7251.         }
  7252.         if( strcmp(input_type,video) == 0 ){
  7253.         free(input_type);
  7254.         return VIDEO;
  7255.         }
  7256.         if( strcmp(input_type,floodfill) == 0 || strcmp(input_type,fill) == 0 ){
  7257.         free(input_type);
  7258.         return FLOODFILL;
  7259.         }
  7260.         if( strcmp(input_type,filltoborder) == 0 ){
  7261.         free(input_type);
  7262.         return FILLTOBORDER;
  7263.         }
  7264.         if( strcmp(input_type,clickfill) == 0 ){
  7265.         free(input_type);
  7266.         return CLICKFILL;
  7267.         }
  7268.         if( strcmp(input_type, replyformat) == 0 ){
  7269.         free(input_type);
  7270.         return REPLYFORMAT;
  7271.         }
  7272.         if( strcmp(input_type, pixelsize) == 0 ){
  7273.         free(input_type);
  7274.         return PIXELSIZE;
  7275.         }
  7276.         if( strcmp(input_type, setpixel) == 0 ){
  7277.         free(input_type);
  7278.         return SETPIXEL;
  7279.         }
  7280.         if( strcmp(input_type, pixels) == 0 ){
  7281.         free(input_type);
  7282.         return PIXELS;
  7283.         }
  7284.         if( strcmp(input_type, clickfillmarge) == 0 ){
  7285.         free(input_type);
  7286.         return CLICKFILLMARGE;
  7287.         }
  7288.         if( strcmp(input_type, xaxis) == 0 || strcmp(input_type, xaxistext) == 0 ){
  7289.         free(input_type);
  7290.         return X_AXIS_STRINGS;
  7291.         }
  7292.         if( strcmp(input_type, yaxis) == 0  ||  strcmp(input_type, yaxistext) == 0 ){
  7293.         free(input_type);
  7294.         return Y_AXIS_STRINGS;
  7295.         }
  7296.         if( strcmp(input_type, piechart) == 0  ){
  7297.         free(input_type);
  7298.         return PIECHART;
  7299.         }
  7300.         if( strcmp(input_type, barchart) == 0  ){
  7301.         free(input_type);
  7302.         return BARCHART;
  7303.         }
  7304.         if( strcmp(input_type, linegraph) == 0  ){
  7305.         free(input_type);
  7306.         return LINEGRAPH;
  7307.         }
  7308.         if( strcmp(input_type, clock) == 0  ){
  7309.         free(input_type);
  7310.         return CLOCK;
  7311.         }
  7312.         if( strcmp(input_type, legend) == 0  ){
  7313.         free(input_type);
  7314.         return LEGEND;
  7315.         }
  7316.         if( strcmp(input_type, legendcolors) == 0  ){
  7317.         free(input_type);
  7318.         return LEGENDCOLORS;
  7319.         }
  7320.         if( strcmp(input_type, xlabel) == 0  ){
  7321.         free(input_type);
  7322.         return XLABEL;
  7323.         }
  7324.         if( strcmp(input_type, ylabel) == 0  ){
  7325.         free(input_type);
  7326.         return YLABEL;
  7327.         }
  7328.         if( strcmp(input_type, animate) == 0  ){
  7329.         free(input_type);
  7330.         return ANIMATE;
  7331.         }
  7332.         /* these are bitmap related flydraw commmands...must be removed. eventually */
  7333.         if( strcmp(input_type, transparent) == 0 ){
  7334.         free(input_type);
  7335.         return TRANSPARENT;
  7336.         }
  7337.         if( strcmp(input_type, status) == 0 || strcmp(input_type, nostatus) == 0 ){
  7338.         free(input_type);
  7339.         return STATUS;
  7340.         }
  7341.         if( strcmp(input_type, snaptogrid) == 0 ){
  7342.         free(input_type);
  7343.         return SNAPTOGRID;
  7344.         }
  7345.         if( strcmp(input_type, xsnaptogrid) == 0 ){
  7346.         free(input_type);
  7347.         return XSNAPTOGRID;
  7348.         }
  7349.         if( strcmp(input_type, ysnaptogrid) == 0 ){
  7350.         free(input_type);
  7351.         return YSNAPTOGRID;
  7352.         }
  7353.         if( strcmp(input_type, userinput_xy) == 0 ){
  7354.         free(input_type);
  7355.         return USERINPUT_XY;
  7356.         }
  7357.         if( strcmp(input_type, userinput_function) == 0 ){
  7358.         free(input_type);
  7359.         return USERINPUT_FUNCTION;
  7360.         }
  7361.         if( strcmp(input_type, usertextarea_xy) == 0 ){
  7362.         free(input_type);
  7363.         return USERTEXTAREA_XY;
  7364.         }
  7365.         if( strcmp(input_type, userinput) == 0 ){
  7366.         free(input_type);
  7367.         return USERINPUT;
  7368.         }
  7369.         if( strcmp(input_type, sgraph) == 0 ){
  7370.         free(input_type);
  7371.         return SGRAPH;
  7372.         }
  7373.         if( strcmp(input_type, jsmath) == 0 ){
  7374.         free(input_type);
  7375.         return JSMATH;
  7376.         }
  7377.         if( strcmp(input_type, trace_jscurve) == 0 ){
  7378.         free(input_type);
  7379.         return TRACE_JSCURVE;
  7380.         }
  7381.         if( strcmp(input_type, jscurve) == 0  ||  strcmp(input_type, jsplot) == 0 ){
  7382.         free(input_type);
  7383.         return JSCURVE;
  7384.         }
  7385.         if( strcmp(input_type, centerstring) == 0 || strcmp(input_type, title) == 0 ){
  7386.         free(input_type);
  7387.         return CENTERSTRING;
  7388.         }
  7389.         if( strcmp(input_type, setlimits) == 0 ){
  7390.         free(input_type);
  7391.         return SETLIMITS;
  7392.         }
  7393.         if( strcmp(input_type, xunit) == 0 ){
  7394.         free(input_type);
  7395.         return XUNIT;
  7396.         }
  7397.         if( strcmp(input_type, yunit) == 0 ){
  7398.         free(input_type);
  7399.         return YUNIT;
  7400.         }
  7401.         if( strcmp(input_type, angle) == 0 ){
  7402.         free(input_type);
  7403.         return ANGLE;
  7404.         }
  7405.         free(input_type);
  7406.         ungetc(c,infile);
  7407.         return 0;
  7408. }
  7409.  
  7410.