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  1. #include "canvasdraw.h"
  2. /*
  3. collection of javascript utilities (with no configurable parameters)
  4. */
  5. void add_javascript_function(){
  6. #ifdef KATEX_INSTALLED
  7. char *mathjax="centered(xml_div,obj);";
  8. #else
  9. char *mathjax="setTimeout(function(){centered(xml_div,obj)},100);";
  10. #endif
  11. int i;
  12. int type;
  13. for(i = 0 ; i < MAX_JS_FUNCTIONS; i++){
  14. /*
  15. fprintf(stdout,"checking js_function[%d] = %d<br />",i,js_function[i]);
  16. */
  17.  if( js_function[i] == 1){
  18.     switch(i){
  19.  
  20. case JS_ARROWHEAD:
  21. /* draw an arrowhead on object ; arrowhead on (x:y) from direction (x0:y0) */
  22. fprintf(js_include_file,"\n/* draw an arrowhead on object ; arrowhead on (x:y) from direction (x0:y0) */\
  23. function draw_arrowhead(x,y,x0,y0,ctx){\
  24. var angle = Math.atan2(x - x0,y - y0) + Math.PI;\
  25. var pie = Math.PI/6;\
  26. ctx.save();\
  27. ctx.fillStyle=ctx.strokeStyle;\
  28. ctx.beginPath();\
  29. ctx.moveTo(x,y);\
  30. ctx.moveTo(x - (arrow_head * Math.sin(angle - pie)),y - (arrow_head * Math.cos(angle - pie)));\
  31. ctx.lineTo(x,y);\
  32. ctx.lineTo(x - (arrow_head * Math.sin(angle + pie)),y - (arrow_head * Math.cos(angle + pie)));\
  33. ctx.closePath();\
  34. ctx.stroke();\
  35. ctx.fill();\
  36. ctx.restore();\
  37. };");
  38. break;
  39. case JS_LOAD_IMAGE:
  40. fprintf(js_include_file,"\n/* get_image_from_url */\
  41. var image_cnt = 0;\
  42. if( typeof(image_patterns) !== 'object'){var image_patterns = [];};\
  43. var get_image_from_url = function(url){\
  44. var idx = Math.ceil(1000*(Math.random()));\
  45. var canvas = create_canvas%d(idx,xsize,ysize);\
  46. canvas.style.visibility = 'hidden';\
  47. var ctx = canvas.getContext(\"2d\");\
  48. var img = new Image();\
  49. img.src = url;\
  50. img.onload = function(){\
  51.  var pat = ctx.createPattern(img,\"repeat\");\
  52.  image_patterns.push(pat);\
  53. };\
  54. };",canvas_root_id);
  55. break;
  56.  
  57. case JS_SAFE_EVAL:
  58. /* to avoid easy js-code injection...but is it a real problem ? */
  59. fprintf(js_include_file," \n/* add safe eval function */function safe_eval(exp){\
  60. exp = exp.replace(/pi/g,'3.14159');\
  61. if(exp.indexOf('^') != -1){\
  62.  exp = exp.replace(/[a-zA-Z]/g,' ');\
  63.  exp = exp.replace(/\\*10\\^-/g,'e-');\
  64.  exp = exp.replace(/\\*10\\^/g,'e+');\
  65.  exp = exp.replace(/10\\^-/g,'1e-');exp = exp.replace(/10\\^/g,'1e+');\
  66.  exp = eval(exp);\
  67.  if(isNaN(exp)){alert(\"invalid input\\ntry just a real number \\ne.g. no calculations...\");return null;}\
  68.  return exp;\
  69. };\
  70. var reg = /(?:[a-z$_][a-z0-9$_]*)|(?:[;={}\\[\\]\"'!&<>^\\\\?:])/ig;\
  71. var valid = true;\
  72. exp = exp.replace(reg,function($0){\
  73.  if(Math.hasOwnProperty($0)){\
  74.   return \"Math.\"+$0;\
  75.  } else {\
  76.   valid = false;\
  77.  }\
  78. }\
  79. );\
  80. if( !valid ){\
  81.  alert(\"hmmm \"+exp+\" ?\"); exp = null;\
  82. } else {\
  83.  try{ exp = eval(exp); } catch(e){alert(\"Invalid arithmetic expression\"); exp = null;};\
  84. };\
  85. return exp;\
  86. };");
  87. break;
  88.  
  89. case JS_RAWMATH:
  90. fprintf(js_include_file,"\n/* add_rawmath() */\
  91. function rawmath(i){\
  92. i=i.toLowerCase();\
  93. i=i.replace(/\\ /g,\"\");i=i.replace(/\\*\\*/g,\"^\");\
  94. if(i.indexOf(\"e+\")!=-1){i=i.replace(\"e+\",\"*10^\");};\
  95. if(i.indexOf(\"e-\")!=-1){i=i.replace(\"e-\",\"*10^-\");};\
  96. i=i.replace(/\\*\\*/g,\"*\");\
  97. if(i.charAt(0)==\"*\"){i=i.substring(1,i.length);};\
  98. var fun=[\"asin\",\"acos\",\"atan\",\"sin\",\"cos\",\"tan\",\"log\",\"ln\",\"pi\",\"e\",\"x\",\"y\"];\
  99. var cons=[\"pi\",\"e\",\"0\",\"1\",\"2\",\"3\",\"4\",\"5\",\"6\",\"7\",\"8\",\"9\"];\
  100. var cntl = 0;var cntr = 0;\
  101. var len = i.length;\
  102. for( var p = 0;p < len; p++){\
  103.  if(i.charAt(p) == '('){cntl++;}\
  104.  if(i.charAt(p) == ')'){cntr++;}\
  105. };\
  106. if(cntl != cntr){alert(\"unmatched parenthesis !!\");return null;};\
  107. for(var p = 0; p < 12 ; p++){\
  108.  for(var d = 0; d < 12 ; d++){\
  109.   while(i.indexOf(cons[d]+\"\"+fun[p])!=-1){\
  110.    i = i.replace(cons[d]+\"\"+fun[p],cons[d]+\"*\"+fun[p]);\
  111.   };\
  112.   while(i.indexOf(fun[p]+\"\"+cons[d])!=-1){\
  113.    i = i.replace(fun[p]+\"\"+cons[d],fun[p]+\"*\"+cons[d]);\
  114.   };\
  115.  };\
  116. };\
  117. if(i.indexOf(\"(\")!=-1){\
  118.  for(var p = 0;p < 12; p++){\
  119.   if(i.indexOf(cons[p]+\"(\")!=-1){\
  120.    i = i.replace(cons[p]+\"(\",cons[p]+\"*(\");\
  121.   };\
  122.   if(i.indexOf(\")\"+cons[p])!=-1){\
  123.    i = i.replace(\")\"+cons[p],\")*\"+cons[p]);\
  124.   };\
  125.  };\
  126.  i = i.replace(/\\)\\(/g,\")*(\");\
  127. };\
  128. return i;\
  129. };");
  130. break;
  131.  
  132. case JS_PLOT:
  133. fprintf(js_include_file,"\n/* jsplot() */\
  134. var x_anim_points;var y_anim_points;var animation_steps;var animation_funs;\
  135. function jsplot(canvas_type,funs,linewidth,color,opacity,use_dashed,dashtype0,dashtype1,trange,plotsteps,use_parametric,use_animate,origin){\
  136. var obj = create_canvas%d(canvas_type,xsize,ysize);\
  137. var ctx = obj.getContext(\"2d\");\
  138. ctx.clearRect(0,0,xsize,ysize);\
  139. animation_funs = funs.length;\
  140. function eval_jsmath(x,func){return parseFloat(eval(func));};\
  141. if(origin == 0 ){\
  142.  if( typeof(multilinewidth) !== 'undefined' && multilinewidth != null ){ linewidth = multilinewidth;};\
  143.  if( typeof(multistrokecolors) !== 'undefined' && multistrokecolors != null ){ color = multistrokecolors;};\
  144.  if( typeof(multistrokeopacity) !== 'undefined' && multistrokeopacity != null ){ opacity = multistrokeopacity;};\
  145.  if( typeof(multidash) !== 'undefined' && multidash != null ){use_dashed = multidash;};\
  146. };\
  147. x_anim_points = [];y_anim_points = [];var idx=0;\
  148. if( use_parametric == 1){\
  149.  for(var i = 0 ; i < animation_funs; i=i+2){\
  150.   funs[i] = funs[i].replace(/t/g,'x');\
  151.   funs[i+1] = funs[i+1].replace(/t/g,'x');\
  152.   funs[i] = funs[i].replace(/xan/g,'tan');\
  153.   funs[i+1] = funs[i+1].replace(/xan/g,'tan');\
  154.   var fun_x = to_js_math(funs[i]);\
  155.   var fun_y = to_js_math(funs[i+1]);\
  156.   if(fun_x == null || fun_y == null){alert(\"Syntax Error...\\nAttention : try use very precise notation !\\nlike :\\n6*(0.25)^(1.23)\\n1/(sin(5*x))\\n(3*x+4)/(x^(2*pi)) \");return;};\
  157.   try{ parseFloat( eval_jsmath( px2x(0),fun_x ) );}catch(e){alert(\"\\nSyntax Error...\\nAttention : try use very precise notation !\\nlike :\\n6*(0.25)^(1.23)\\n1/(sin(5*x))\\n(3*x+4)/(x^(2*pi))\");return;};\
  158.   ctx.lineWidth = linewidth[i] || linewidth;\
  159.   ctx.strokeStyle='rgba('+color[i] || color +','+opacity[i] || opacity +')';\
  160.   if(use_dashed[i] == \"1\" || use_dashed == \"1\"){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash =[dashtype0,dashtype1];}};\
  161.   var y1;var x1;var y2;var x2;\
  162.   ctx.beginPath();\
  163.   var tmin = trange[0];var tmax = trange[1];\
  164.   var step = parseFloat((tmax - tmin)/plotsteps);\
  165.   for(var p = tmin ; p < tmax; p = p+step ){\
  166.    x1 = x2px(parseFloat(eval_jsmath(p,fun_x)));\
  167.    y1 = y2px(parseFloat(eval_jsmath(p,fun_y)));\
  168.    x2 = x2px(parseFloat(eval_jsmath(p+step,fun_x)));\
  169.    y2 = y2px(parseFloat(eval_jsmath(p+step,fun_y)));\
  170.    x_anim_points[idx] = x1;y_anim_points[idx] = y1;idx++;\
  171.     ctx.moveTo(x1,y1);\
  172.     ctx.lineTo(x2,y2);\
  173.     ctx.moveTo(x1,y1);\
  174.     ctx.lineTo(x2,y2);\
  175.   };\
  176.   ctx.closePath();\
  177.   ctx.stroke();\
  178.  };\
  179.  animation_funs = 0.5*animation_funs;\
  180. }else{\
  181.  for(var i = 0 ; i < animation_funs; i++){\
  182.   var fun = to_js_math(funs[i]);\
  183.   if(fun == null){alert(\"Syntax Error...\\nAttention : try use very precise notation !\\nlike :\\n6*(0.25)^(1.23)\\n1/(sin(5*x))\\n(3*x+4)/(x^(2*pi)) \");return;};\
  184.   try{ parseFloat( eval_jsmath( px2x(0),fun ) );}catch(e){alert(\"\\nSyntax Error...\\nAttention : try use very precise notation !\\nlike :\\n6*(0.25)^(1.23)\\n1/(sin(5*x))\\n(3*x+4)/(x^(2*pi))\");return;};\
  185.   if(use_dashed[i] == \"1\" || use_dashed == \"1\"){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash =[dashtype0,dashtype1];}};\
  186.   ctx.lineWidth = linewidth[i] || linewidth;\
  187.   ctx.strokeStyle='rgba('+color[i] || color +','+opacity[i] || opacity +')';\
  188.   var y1;var x1;var y2;var x2;\
  189.   ctx.beginPath();\
  190.   for(var p = 0 ; p<xsize;p++){\
  191.    x1 = px2x(p);\
  192.    y1 = y2px(parseFloat(eval_jsmath(x1,fun)));\
  193.    x2 = px2x(p+1);\
  194.    y2 = y2px(parseFloat(eval_jsmath(x2,fun)));\
  195.    x_anim_points[idx] = p;y_anim_points[idx] = y1;idx++;\
  196.    if(Math.abs(y2-y1) < ysize ){\
  197.     ctx.moveTo(p,y1);\
  198.     ctx.lineTo(p+1,y2);\
  199.    };\
  200.   };\
  201.   ctx.closePath();\
  202.   ctx.stroke();\
  203.  };\
  204. };\
  205. if( use_animate == 1 ){animation_steps = idx;animate_this();}\
  206. };",canvas_root_id);
  207. break;
  208.  
  209. case JS_MATH:
  210. fprintf(js_include_file,"\n/* to_js_math() */\
  211. function to_js_math(math_fun){\
  212. if(math_fun == null){return;};\
  213. var infun=[\"sqrt\",\"^\",\"asin\",\"acos\",\"atan\",\"log\",\"pi\",\"abs\",\"sin\",\"cos\",\"tan\",\"e\"];\
  214. var outfun=[\"Math.sqrt\",\"Math.pow\",\"Math.asin\",\"Math.acos\",\"Math.atan\",\"Math.log\",\"(3.14159265358979)\",\"Math.abs\",\"Math.sin\",\"Math.cos\",\"Math.tan\",\"(2.718281828459045)\"];\
  215. var len = infun.length;var in_fun;var In_Fun;var out_fun;var w_cnt;\
  216. for(var p=0 ; p < len ; p++){\
  217.  in_fun = infun[p];In_Fun = in_fun.toUpperCase();out_fun = outfun[p];w_cnt=0;\
  218.  if(math_fun.indexOf(in_fun) != -1){\
  219.   if(in_fun == \"^\"){\
  220.    var tab = [];var small_trick = \"___small_trick___\";\
  221.    while (math_fun.indexOf(\"(\") != -1){\
  222.     math_fun = math_fun.replace(/(\\([^\\(\\)]*\\))/g, function(m, t){tab.push(t);return (small_trick + (tab.length - 1));});\
  223.     w_cnt++;if(w_cnt>1000){alert(\"hmmm \"+math_fun+\" ?\\nUse command plot for more complex math functions...\");return null;};\
  224.    };\
  225.    tab.push(math_fun);w_cnt = 0;math_fun = small_trick + (tab.length - 1);\
  226.    while (math_fun.indexOf(small_trick) != -1){\
  227.     math_fun = math_fun.replace(new RegExp(small_trick + \"(\\\\d+)\", \"g\"), function(m, d){return tab[d].replace(/(\\w*)\\^(\\w*)/g, out_fun+\"($1,$2)\");});\
  228.     w_cnt++;if(w_cnt>1000){alert(\"hmmm \"+math_fun+\" ?\\nUse command plot for more complex math functions...\");return null;};\
  229.    };\
  230.   } else {\
  231.    while( math_fun.indexOf(in_fun) != -1 ){\
  232.     math_fun = math_fun.replace(in_fun,out_fun);\
  233.     math_fun = math_fun.replace(in_fun,In_Fun);\
  234.     w_cnt++;if(w_cnt>1000){alert(\"hmmm \"+math_fun+\" ?\\nUse command plot for more complex math functions...\");return null;};\
  235.    };\
  236.   };\
  237.  };\
  238. };\
  239. for(var p=0 ; p < len ; p++){\
  240.  in_fun = infun[p];In_Fun = in_fun.toUpperCase();w_cnt = 0;\
  241.  if(math_fun.indexOf(In_Fun) != -1 ){\
  242.   while(math_fun.indexOf(In_Fun) != -1){\
  243.    math_fun = math_fun.replace(In_Fun,in_fun);\
  244.    w_cnt++;if(w_cnt>1000){alert(\"hmmm \"+math_fun+\" ?\\nUse command plot for more complex math functions...\");return null;};\
  245.   };\
  246.  };\
  247. };\
  248. return math_fun;\
  249. };");
  250. break;
  251.  
  252. case INTERACTIVE:
  253.  fprintf(js_include_file,"\n/* add mouse support */\
  254. var isTouch = (('ontouchstart' in window) || (navigator.msMaxTouchPoints > 0));\
  255. var getMouse = function(e, element){\
  256.   var mx,my;var offsetX = 0,offsetY = 0;\
  257.   while( ( element = element.offsetParent) ){\
  258.     offsetX += element.offsetLeft;offsetY += element.offsetTop;\
  259.   };\
  260.   /*console.log('===');*/\
  261.   if(isTouch){\
  262.      mx = e.pageX - offsetX; my = e.pageY - offsetY;\
  263.   }else{\
  264.      mx = e.clientX - offsetX + (document.documentElement.scrollLeft ? document.documentElement.scrollLeft:document.body.scrollLeft);\
  265.      my = e.clientY - offsetY + (document.documentElement.scrollTop ? document.documentElement.scrollTop:document.body.scrollTop);\
  266.   };\
  267.   /* test if canvas_div is inside a scrollable */\
  268.   const scroll_parent = canvas_div.closest('.wims_scrollable');\
  269.   if (scroll_parent){\
  270.      mx = mx + scroll_parent.scrollLeft;\
  271.      my = my + scroll_parent.scrollTop;\
  272.   }\
  273.   /* If canvas had been resized,, we have to convert these coordinates to original grid*/\
  274.   /*console.log('mx before=' + mx);\
  275.   console.log('xsize='+xsize);\
  276.   console.log('canvas_div.offsetHeight='+canvas_div.offsetWidth);*/\
  277.   mx = (mx * xsize / canvas_div.offsetWidth);\
  278.   /*console.log('mx after='+mx);*/\
  279.   my = (my * ysize / canvas_div.offsetHeight);\
  280.   return {x: mx, y: my};\
  281. };");
  282. break;
  283. case USERDRAW_AND_ZOOM:
  284. fprintf(js_include_file,"\n/* add zoom support for multidraw */\
  285. function recalculate_userdraw(xmin0,ymin0,xmax0,ymax0){\
  286. function x_zoom(px){\
  287.  var x = parseFloat(px*(xmax0 - xmin0)/xsize + xmin0);\
  288.  return parseFloat(x*xsize/(xmax - xmin) - xsize*xmin/(xmax - xmin));\
  289. };\
  290. function y_zoom(py){\
  291.  var y = parseFloat(ymax0 - py*(ymax0 - ymin0)/ysize);\
  292.  return parseFloat(-1*y*ysize/(ymax - ymin) + ymax*ysize/(ymax - ymin));\
  293. };\
  294. function r_zoom(r){\
  295.  return r*(xmin0/xmin);\
  296. };\
  297. var len = userdraw_x.length;\
  298. var x;var y;var r;\
  299. for(var p=0;p<len;p++){\
  300.  x = userdraw_x[p];\
  301.  y = userdraw_y[p];\
  302.  userdraw_x[p] = x_zoom(x);\
  303.  userdraw_y[p] = y_zoom(y);\
  304.  if( userdraw_radius[p] ){\
  305.   r = userdraw_radius[p];\
  306.   userdraw_radius[p] = r_zoom(r);\
  307.  };\
  308. };\
  309. };");
  310. break;
  311.  
  312. case DRAG_AND_ZOOM:
  313. fprintf(js_include_file,"\n/* add zoom support for drag&drop */\
  314. function recalculate_dragdrop(xmin0,ymin0,xmax0,ymax0){\
  315. function x_zoom(px){\
  316.  var x = parseFloat(px*(xmax0 - xmin0)/xsize + xmin0);\
  317.  return parseFloat(x*xsize/(xmax - xmin) - xsize*xmin/(xmax - xmin));\
  318. };\
  319. function y_zoom(py){\
  320.  var y = parseFloat(ymax0 - py*(ymax0 - ymin0)/ysize);\
  321.  return parseFloat(-1*y*ysize/(ymax - ymin) + ymax*ysize/(ymax - ymin));\
  322. };\
  323. var len = dragstuff.shapes.length;\
  324. var shape;var L;var x;var y;\
  325. for(var p=0;p<len;p++){\
  326.  shape = dragstuff.shapes[p];\
  327.  L = shape.x.length;\
  328.  for(var i=0;i<L;i++){\
  329.   x = shape.x[i];\
  330.   y = shape.y[i];\
  331.   dragstuff.shapes[p].x[i] = x_zoom(x);\
  332.   dragstuff.shapes[p].y[i] = y_zoom(y);\
  333.  };\
  334. };\
  335. };");
  336. break;
  337.  
  338. case JSPLOT_AND_ZOOM:
  339. fprintf(js_include_file,"\n/* add zoom support for jscurves */\
  340. function redraw_jsplot(){for(var p=0; p <= all_jsplots;p++){try{var fun = eval('js_plot'+p);fun();}catch(e){};};};");
  341. break;
  342.  
  343. case JS_ZOOM:
  344. fprintf(js_include_file,"\n/* add zoom support */\
  345. var x_min_start = xmin;var x_max_start = xmax;var y_min_start = ymin;var y_max_start = ymax;\
  346. var zoomcanvas = create_canvas%d(%d,xsize,ysize);\
  347. function redraw_canvas%d(key){\
  348. var xmin0 = xmin;var xmax0 = xmax;var ymin0 = ymin;var ymax0 = ymax;\
  349. switch(key){\
  350.  case 0: xmin++;ymin++;xmax--;ymax--;break;\
  351.  case 1: xmin--;ymin--;xmax++;ymax++;break;\
  352.  case 2: xmin--;xmax--;break;\
  353.  case 3: xmin++;xmax++;break;\
  354.  case 4: ymin--;ymax--;break;\
  355.  case 5: ymax++;ymin++;break;\
  356.  case 6: xmin = x_min_start;xmax=x_max_start;ymin=y_min_start;ymax=y_max_start;break;\
  357.  default: break;\
  358. };\
  359. if(xmin >= xmax){xmin = x_min_start;xmax = x_max_start;};\
  360. if(ymin >= ymax){ymax = y_max_start;ymin = y_min_start;};\
  361. if( typeof(recalculate_multidraw) === 'function'){recalculate_multidraw(xmin0,xmax0,ymin0,ymax0);redraw_userdraw();}\
  362. if( typeof(recalculate_userdraw) === 'function'){recalculate_userdraw(xmin0,ymin0,xmax0,ymax0);redraw_userdraw();}\
  363. if( typeof(redraw_grid) === 'function'){redraw_grid();};\
  364. if( typeof(redraw_jsplot) === 'function'){redraw_jsplot();};\
  365. if( typeof(recalculate_dragdrop) === 'function'){recalculate_dragdrop(xmin0,ymin0,xmax0,ymax0);dragstuff.valid = false;dragstuff.draw();};\
  366. return;\
  367. };\
  368. canvas_div.addEventListener(\"mousedown\",check_zoom_or_pan,false);\
  369. canvas_div.addEventListener(\"wheel\",wheel_zoom,false);\
  370. canvas_div.addEventListener(\"touchstart\",function(e){ e.preventDefault();check_zoom_or_pan(e.changedTouches[0]);},false);\
  371. function wheel_zoom(evt){\
  372. evt.preventDefault();\
  373. var key = 1;\
  374. if(evt.deltaY > 0 ){key = 0};\
  375. redraw_canvas%d(key);\
  376. return;\
  377. };\
  378. function check_zoom_or_pan(evt){\
  379. var mouse = getMouse(evt,zoomcanvas);\
  380. var my = mouse.y;\
  381. if(my < ysize - 30){ return; };\
  382. var mx = mouse.x;\
  383. var key = -1;\
  384. for(var p = 15 ; p < 106 ; p = p+15){\
  385.  key++;\
  386.  if(mx > xsize - p){\
  387.   redraw_canvas%d(key);\
  388.   return;\
  389.  };\
  390. };\
  391. return;\
  392. };",canvas_root_id,ZOOM_CANVAS,canvas_root_id,canvas_root_id,canvas_root_id);
  393. break;
  394.  
  395. case DRAW_FILL_PATTERN:
  396. fprintf(js_include_file,"\n /* add fill pattern */ \
  397. function create_Pattern(x0,y0,type,color){document.body.style.cursor = 'wait';var idx = Math.ceil(1000*(Math.random()));var canvas = create_canvas%d(idx,xsize,ysize);canvas.style.visibility = 'hidden';var ctx = canvas.getContext(\"2d\");var x;var y;var dx = 6;var dy = 6;ctx.lineWidth = 1;ctx.strokeStyle = color;ctx.fillStyle = color;var pat;\
  398. switch(type){\
  399.  case 2: for( x = 0 ; x < xsize ; x = x + dx ){ctx.beginPath();ctx.moveTo(x,0);ctx.lineTo(x,ysize);ctx.closePath();ctx.stroke();};for( y = 0 ; y < ysize; y = y + dy ){ctx.beginPath();ctx.moveTo(0,y);ctx.lineTo(xsize,y);ctx.closePath();ctx.stroke();}; pat = ctx.createPattern(canvas,\"no-repeat\");break;\
  400.  case 3: y = ysize;ctx.beginPath();for( x = 0 ; x < xsize ; x = x + dx ){ctx.moveTo(x,0);ctx.lineTo(xsize,y);y = y - dy;};y = 0;for( x = xsize ; x > 0 ; x = x - dx){ctx.moveTo(x,ysize);ctx.lineTo(0,y); y = y + dy;};ctx.closePath();ctx.stroke(); pat = ctx.createPattern(canvas,\"no-repeat\");break;\
  401.  case 4: y = ysize;ctx.beginPath();for( x = 0 ; x < xsize ; x = x + dx ){ctx.moveTo(x,0); ctx.lineTo(xsize,y); y = y - dy;};y = 0;for( x = xsize ; x > 0 ; x = x - dx){ctx.moveTo(x,ysize);ctx.lineTo(0,y);y = y + dy;};y = 0;for( x = 0 ; x < xsize ; x = x + dx ){ctx.moveTo(x,0); ctx.lineTo(0,y); y = y + dy;};y = 0;for( x = 0 ; x < xsize ; x = x + dx ){ctx.moveTo(xsize,y);ctx.lineTo(x,ysize);y = y + dy;};ctx.closePath(); ctx.stroke(); pat = ctx.createPattern(canvas,\"no-repeat\");break;\
  402.  case 5: for( x = 0 ; x < xsize ; x = x + dx ){for( y = 0 ; y < ysize ; y = y + dy ){ctx.beginPath();ctx.arc(x,y,1,0,2*Math.PI,false);ctx.closePath();ctx.fill();};}; pat = ctx.createPattern(canvas,\"no-repeat\");break;\
  403.  case 6: alert('wait for image '+(image_cnt+1)+'...');pat = image_patterns[image_cnt];image_cnt++;break;\
  404.  default: break;\
  405. };\
  406. document.body.style.cursor = 'default';return pat;\
  407. };",canvas_root_id);
  408. break;
  409.  
  410. case JS_TRANSFORM_MOUSE:
  411. /* identify mouse coordinates on transformed objects using command affine */
  412. fprintf(js_include_file,"\n/* translate mouse */\
  413. function transform_mouse(mx,my,obj){\
  414. if( typeof(obj.affine_matrix) === 'undefined' ){console.log('translate_mouse() affine_matrix undefined');{x:mx,y:my};};\
  415. var m = obj.affine_matrix;\
  416. var d = 1/(m[0]*m[3]-m[1]*m[2]);\
  417. var im = [ m[3]*d, -m[1]*d,-m[2]*d,m[0]*d,d*(m[2]*m[5]-m[3]*m[4]),d*(m[1]*m[4]-m[0]*m[5]) ];\
  418. return { x:mx*im[0]+my*im[2]+im[4], y:mx*im[1]+my*im[3]+im[5] };};");
  419. break;
  420.  
  421. case JS_ROTATE_MOUSE:
  422. /*
  423. identify mouse coordinates on rotated STRING (no 14) objects used for command rotate :
  424. faster than transform matrix
  425. */
  426. fprintf(js_include_file,"\n/* rotate mouse */\
  427. function rotate_mouse(mx,my,obj){\
  428. if( typeof(obj.angle) === 'undefined' ){console.log('rotate_mouse() angle undefined');return {x:mx,y:my};};\
  429. var cos = Math.cos(obj.angle);\
  430. var sin = Math.sin(obj.angle);\
  431. var xc = obj.rotation_center[0];\
  432. var yc = obj.rotation_center[1];\
  433. var x_r = parseInt((cos * (mx - xc)) + (sin * (my - yc)) + xc);\
  434. var y_r = parseInt((cos * (my - yc)) - (sin * (mx - xc)) + yc);\
  435. return {x:x_r,y:y_r};};");
  436. break;
  437.  
  438. case JS_FIND_ANGLE:
  439.  fprintf(js_include_file,"\n/* function find_angle() */ function find_angle(xc,yc,x1,y1){var dx = x1 - xc;var dy = yc - y1;return Math.atan2(dx,dy);};");
  440. break;
  441.  
  442. case DRAG_EXTERNAL_IMAGE:
  443. /*
  444. the external_canvas is already created: it needs to be FIRST in order to do some drawing onto it
  445. reply is object{} and identical to reply from dragstuff library for drag&drop&click
  446. */
  447. fprintf(js_include_file,"\n/* drag external images */\
  448. var external_ctx = external_canvas.getContext(\"2d\");\
  449. var external_canvas_rect = external_canvas.getBoundingClientRect();\
  450. canvas_div.addEventListener(\"mousedown\",setxy,false);\
  451. canvas_div.addEventListener(\"mouseup\",dragstop,false);\
  452. canvas_div.addEventListener(\"mousemove\",dragxy,false);\
  453. canvas_div.addEventListener(\"touchstart\",function(e){ e.preventDefault();setxy(e.changedTouches[0]);},false);\
  454. canvas_div.addEventListener(\"touchend\"  ,function(e){ e.preventDefault();dragstop(e.changedTouches[0]);},false);\
  455. canvas_div.addEventListener(\"touchmove\" ,function(e){ e.preventDefault();dragxy(e.changedTouches[0]);},false);\
  456. var selected_image = null;\
  457. if( typeof(ext_drag_images) !== 'object' ){var ext_drag_images = new Array();};\
  458. if( typeof(ext_image_cnt) == 'undefined'){var ext_image_cnt = 0;};\
  459. function drag_external_image(URL,sx,sy,swidth,sheight,x0,y0,width,height,onclick,object_cnt,use_offset,use_snap,resize){\
  460. var image = new Image();\
  461. image.src = URL;\
  462. slidergroup[object_cnt] = null;\
  463. image.onload = function(){\
  464.  if( sx < 1 ){ sx = 0; };\
  465.  if( sy < 1 ){ sy = 0; };\
  466.  if( swidth < 1 ){swidth = image.width;};\
  467.  if( sheight < 1 ){sheight = image.height;};\
  468.  if( width < 1 ){width = image.width;};\
  469.  if( height < 1 ){height = image.height;};\
  470.  if( resize == 1 ){\
  471.   if( swidth > image.width ){ swidth = image.width; };\
  472.   if( sheight > image.height){ sheight = image.height;};\
  473.   if( width > image.width ){ width = image.width; };\
  474.   if( height > image.height){ height = image.height;};\
  475.  };\
  476.  var img = new Array(18);\
  477.  img[0] = onclick;img[1] = image;img[2] = sx;img[3] = sy;img[4] = swidth;img[5] = sheight;\
  478.  img[8] = width;img[9] = height;img[10] = object_cnt;img[11] = use_snap;\
  479.  img[6] = x0;img[7] = y0;\
  480.  img[12] = ext_image_cnt;\
  481.  img[13] = img[6];img[14] = img[7];img[15] = 0;img[16] = 0;img[17] = 0;\
  482.  if(use_offset == 4 ){\
  483.   img[16] = 0.5*img[8];\
  484.   img[17] = 0.5*img[9];\
  485.   img[6]= parseInt(img[6] - img[16]);\
  486.   img[7]= parseInt(img[7] - img[17]);\
  487.  };\
  488.  external_ctx.drawImage(img[1],img[2],img[3],img[4],img[5],img[6],img[7],img[8],img[9]);\
  489.  dragdrop_reply[img[10]] = {type:img[0],object_cnt:img[10],x:x0,y:y0,r:0,angle:0,clicked:img[15]};\
  490.  ext_drag_images[ext_image_cnt] = img;\
  491.  ext_image_cnt++;\
  492. };\
  493. };\
  494. function dragstop(evt){\
  495. if(selected_image != null){\
  496.  var s_img = ext_drag_images[selected_image];\
  497.  dragdrop_reply[s_img[10]] = {type:s_img[0], object_cnt:s_img[10],x:s_img[6]+s_img[16],y:s_img[7]+s_img[17],r:s_img[8],angle:s_img[15],clicked:s_img[15]};\
  498. };\
  499. selected_image = null;return;\
  500. };\
  501. function dragxy(evt){\
  502. if( selected_image != null ){\
  503.  var s_img = ext_drag_images[selected_image];\
  504.  var mouse = getMouse(evt,external_canvas);\
  505.  var xy = multisnap_check(mouse.x,mouse.y,s_img[11]);\
  506.  xy[0] = parseInt(xy[0] - 0.5*s_img[8]);\
  507.  xy[1] = parseInt(xy[1] - 0.5*s_img[9]);\
  508.  s_img[6] = xy[0];s_img[7] = xy[1];\
  509.  ext_drag_images[selected_image] = s_img;\
  510.  external_ctx.clearRect(0,0,xsize,ysize);\
  511.  for(var i = 0; i < ext_image_cnt ; i++){\
  512.   var img = ext_drag_images[i];\
  513.   external_ctx.drawImage(img[1],img[2],img[3],img[4],img[5],img[6],img[7],img[8],img[9]);\
  514.  };\
  515. };\
  516. };\
  517. function setxy(evt){\
  518. if( ! selected_image ){\
  519.  var mouse = getMouse(evt,external_canvas);\
  520.  var xm = mouse.x;\
  521.  var ym = mouse.y;\
  522.  var img;var xmarge;var ymarge;\
  523.  for(var p = 0 ; p < ext_image_cnt ; p++){\
  524.   if( ext_drag_images[p] ){\
  525.    img = ext_drag_images[p];\
  526.    if( img[0] != 0 ){\
  527.     xmarge = 0.5*img[8];ymarge = 0.5*img[9];\
  528.     if( xm > img[6] - xmarge && xm < img[6] + img[8]){\
  529.      if( ym > img[7] - ymarge && ym < img[7] + img[9]){\
  530.       if( img[0] == 1){\
  531.        if( dragdrop_reply[img[10]].clicked == 1 ){\
  532.         dragdrop_reply[img[10]].clicked = 0;external_ctx.strokeStyle = '#ffffff';\
  533.        }\
  534.        else\
  535.        {\
  536.         dragdrop_reply[img[10]].clicked = 1;external_ctx.strokeStyle = '#00ff00';\
  537.        };\
  538.        external_ctx.lineWidth = 2;\
  539.        external_ctx.beginPath();\
  540.        external_ctx.rect(img[6]-2,img[7]-2,img[8]+2,img[9]+2);\
  541.        external_ctx.closePath();\
  542.        external_ctx.stroke();\
  543.        return;\
  544.       }\
  545.       else\
  546.       {\
  547.        img[6] = xm;\
  548.        img[7] = ym;\
  549.        selected_image = p;\
  550.        dragxy(evt);\
  551.        ext_drag_images[p] = img;\
  552.       };\
  553.      };\
  554.     };\
  555.    };\
  556.   };\
  557.  };\
  558. } else {\
  559.  selected_image = null;\
  560. };\
  561. };");
  562. break;
  563.  
  564. case DRAW_EXTERNAL_IMAGE:
  565. /*
  566. the external_canvas is already created: it needs to be FIRST in order to do some drawing onto it
  567. only drag_xy !
  568. snaptogrid | xsnaptogrid | ysnaptogrid works
  569. 14/5/2019
  570. on heavy styled wims (unice.fr etc problems with mouse?
  571. now uniform method of retreiving mouse coordinates getMouse()
  572. */
  573. fprintf(js_include_file,"\n/* draw external images */\
  574. function draw_external_image(URL,sx,sy,swidth,sheight,x0,y0,width,height,use_offset,resize){\
  575. var external_ctx = image_copy_canvas.getContext(\"2d\");\n\
  576. var image = new Image();\
  577. image.src = URL;\
  578. image.onload = function(){\
  579.  if( sx < 1 ){ sx = 0; };\
  580.  if( sy < 1 ){ sy = 0; };\
  581.  if( swidth < 1 ){swidth = image.width;};\
  582.  if( sheight < 1 ){sheight = image.height;};\
  583.  if( width < 1 ){width = image.width;};\
  584.  if( height < 1 ){height = image.height;};\
  585.  if( resize == 1 ){\
  586.   if( swidth > image.width ){ swidth = image.width; };\
  587.   if( sheight > image.height){ sheight = image.height;};\
  588.   if( width > image.width ){ width = image.width; };\
  589.   if( height > image.height){ height = image.height;};\
  590.  };\
  591.  var img = new Array(9);\
  592.  img[0] = image;img[1] = sx;img[2] = sy;img[3] = swidth;img[4] = sheight;img[5] = x0;img[6] = y0;\
  593.  if(use_offset == 4 ){img[5] = parseInt(img[5] - 0.5*width);img[6] = parseInt(img[6] - 0.5*height);};\
  594.  img[7] = width;img[8] = height;\
  595.  external_ctx.drawImage(img[0],img[1],img[2],img[3],img[4],img[5],img[6],img[7],img[8]);\
  596. };\
  597. };");
  598. break;
  599.  
  600. case DRAW_BEZIER:
  601. fprintf(js_include_file,"\n/* draw bezier curve */\
  602. if( typeof(all_fill_patterns) != 'object' ){ var all_fill_patterns = []; };\
  603. function draw_bezier(canvas_type,linewidth,xy_points,fill_color,fill_opacity,stroke_color,stroke_opacity,use_filled,use_dashed,dashtype0,dashtype1,use_rotate,angle){\
  604. var obj;\
  605. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  606.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  607. } else {\
  608.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  609. };\
  610. var ctx = obj.getContext(\"2d\");\
  611. ctx.save();\
  612. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  613. ctx.lineWidth = linewidth;\
  614. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);};\
  615. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  616. ctx.beginPath();\
  617. ctx.moveTo(x2px(xy_points[0]),y2px(xy_points[1]));\
  618. ctx.bezierCurveTo(x2px(xy_points[2]),y2px(xy_points[3]),x2px(xy_points[4]),y2px(xy_points[5]),x2px(xy_points[6]),y2px(xy_points[7]));\
  619. var color = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";\
  620. if(use_filled > 1 ){ if(! all_fill_patterns[use_filled] ){ var pat = create_Pattern(0,0,use_filled,color); all_fill_patterns[use_filled] = pat;};ctx.fillStyle = all_fill_patterns[use_filled]; } else { ctx.fillStyle = color;};\
  621. ctx.stroke();\
  622. ctx.restore();\
  623. };",canvas_root_id,canvas_root_id,canvas_root_id);
  624. break;
  625.  
  626. case DRAW_GRIDFILL:/* not used for userdraw */
  627. fprintf(js_include_file,"\n/* draw gridfill */\
  628. var grid_fill_pattern;\
  629. function draw_gridfill(canvas_type,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize,use_userdraw){\
  630. if( dx == 0 || dy == 0 ){alert(\"increment is zero !!! \");return;};\
  631. var fc = %d+canvas_type;\
  632. var obj = create_canvas%d(fc,xsize,ysize);\
  633. var ctx = obj.getContext('2d');\
  634. var x,y;\
  635. ctx.fillStyle='rgba(255,255,255,0.01)';\
  636. ctx.rect(0,0,xsize,ysize);\
  637. ctx.fill();\
  638. ctx.lineWidth = linewidth;\
  639. ctx.strokeStyle=\"rgba(\"+color+\",0.01)\";\
  640. for( x = 0 ; x <= xsize ; x = x + dx ){\
  641.  ctx.beginPath();\
  642.  ctx.moveTo(x,0);\
  643.  ctx.lineTo(x,ysize);\
  644.  ctx.closePath();\
  645.  ctx.stroke();\
  646. };\
  647. for( y = 0 ; y <= ysize; y = y + dy ){\
  648.  ctx.beginPath();\
  649.  ctx.moveTo(0,y);\
  650.  ctx.lineTo(xsize,y);\
  651.  ctx.closePath();\
  652.  ctx.stroke();\
  653. };\
  654. if( use_userdraw ){\
  655.  grid_fill_pattern = ctx;\
  656. } else {\
  657.  setTimeout(function(){ filltoborder( x0,y0,color,color,canvas_type,true,ctx); },500);};return;\
  658. };",canvas_root_id,canvas_root_id);
  659. break;
  660.  
  661. case DRAW_IMAGEFILL:/* not  used for userdraw */
  662. fprintf(js_include_file,"\n/* draw imagefill */\
  663. function draw_imagefill(canvas_type,x0,y0,URL,xsize,ysize,use_userdraw,use_scaling){\
  664. var fc = %d+canvas_type;\
  665. var obj = create_canvas%d(fc,xsize,ysize);\
  666. var ctx = obj.getContext('2d');\
  667. var img = new Image();\
  668. img.src = URL;\
  669. obj.style.visibility = 'hidden';\
  670. img.onload = function(){\
  671.  if( use_scaling == 1 ){\
  672.   ctx.drawImage(img,x0,y0,xsize,ysize);\
  673.  }else{\
  674.   var w0 = img.width;var h0 = img.height;var w;var h;\
  675.   for( w = x0; w < xsize ; w = w + w0 ){\
  676.    for( h = y0; h < ysize; h = h + h0){\
  677.      ctx.drawImage(img,w,h,w0,h0);\
  678.    };\
  679.   };\
  680.  };\
  681.  if( use_userdraw ){\
  682.   image_pattern = ctx;\
  683.  } else {\
  684.   setTimeout(function(){ filltoborder( x0,y0,'red','red',canvas_type,true,ctx); },500);\
  685.  };\
  686. };\
  687. };",canvas_root_id,canvas_root_id);
  688. break;
  689.  
  690. case DRAW_DOTFILL:/* not  used for userdraw */
  691. fprintf(js_include_file,"\n/* draw dotfill */\
  692. var dot_fill_pattern;\
  693. function draw_dotfill(canvas_type,x0,y0,dx,dy,radius,color,opacity,xsize,ysize,use_userdraw){\
  694. if( dx == 0 || dy == 0 ){alert(\"increment is zero !!! \");return;};\
  695. var fc = %d+canvas_type;\
  696. var obj = create_canvas%d(fc,xsize,ysize);\
  697. var ctx = obj.getContext('2d');\
  698. var x,y;\
  699. ctx.fillStyle='rgba(255,255,255,0.01)';\
  700. ctx.rect(0,0,xsize,ysize);\
  701. ctx.fill();\
  702. ctx.fillStyle=\"rgba(\"+color+\",0.01)\";\
  703. ctx.strokeStyle=\"rgba(\"+color+\",0.01)\";\
  704. for( x = 0 ; x < xsize ; x = x + dx ){\
  705.  for( y = 0 ; y < ysize ; y = y + dy ){\
  706.   ctx.beginPath();\
  707.   ctx.arc(x,y,radius,0,2*Math.PI,false);\
  708.   ctx.closePath();\
  709.   ctx.fill();\
  710.  };\
  711. };\
  712. if( use_userdraw ){\
  713.  dot_fill_pattern = ctx;\
  714. } else {\
  715. setTimeout(function(){ filltoborder( x0,y0,color,color,canvas_type,true,ctx); },500);\
  716. };\
  717. return;\
  718. };",canvas_root_id,canvas_root_id);
  719. break;
  720.  
  721. case DRAW_SUBSUP:/* Uses 'script-size for numbers and for sub & sup strings */
  722. /* use_offset
  723.  0=none;
  724.  1=yoffset
  725.  2=xoffset
  726.  3=xyoffset
  727.  4=centered
  728. */
  729. fprintf(js_include_file,"\n/* draw sub sup imitation in canvas */\
  730. function draw_subsup(ctx,x,y,txt,use_offset){\
  731. var C;var c;var len = txt.length;var baseline = 'middle';var space = 0;ctx.save();var subsup=0;\
  732. var m = 0.4*(ctx.measureText(txt).width);\
  733. var h = ctx.measureText('M').width;\
  734. switch(use_offset){\
  735.  case 0:break;\
  736.  case 1:y=y-h;;break;\
  737.  case 2:x=x+h;break;\
  738.  case 3:x=x+h;y=y-h;;break;\
  739.  case 4:x=x-m;break;\
  740.  default:break;\
  741. };\
  742. var S = parseInt(ctx.font) || 10;var s = 0.8*(parseInt(ctx.font)) || 8;\
  743. ctx.font = S+'px Helvetica';ctx.textBaseline = baseline;\
  744. for( c = 0 ; c < len ;c++){\
  745.  C = txt.charAt(c);space = 0;\
  746.  if(C == '_'){ctx.font = s+'px Helvetica';subsup = 1;c++;space = 3;baseline='top';C = txt.charAt(c);}\
  747.  else\
  748.  if(C == '^'){ctx.font = s+'px Helvetica';subsup = 1;c++;space = 3;baseline='bottom';C = txt.charAt(c);}\
  749.  else\
  750.  if(C == ' '){ctx.font = S+'px Helvetica';if(subsup == 1){space = 0.6*s - (ctx.measureText('M').width);subsup = 0;};baseline = 'middle';}\
  751.  else\
  752.  if(C >= '0' && C <= '9'){ctx.font = s+'px Helvetica';}\
  753.  else{ctx.font = S+'px Helvetica';};\
  754.  ctx.textBaseline = baseline;ctx.fillText(C,x,y);x = space + x + ctx.measureText(C).width;\
  755. };\
  756. ctx.stroke();\
  757. ctx.restore();\
  758. return;\
  759. };");
  760. break;
  761.  
  762. case DRAW_TEXTFILL:/* not  used for userdraw */
  763. fprintf(js_include_file,"\n/* draw textfill */\
  764. var text_fill_pattern;\
  765. function draw_textfill(canvas_type,x0,y0,color,fontfamily,xsize,ysize,txt,use_userdraw){\
  766. var fc = %d+canvas_type;\
  767. var obj = create_canvas%d(fc,xsize,ysize);\
  768. var ctx = obj.getContext('2d');\
  769. ctx.font = fontfamily;\
  770. var dx = 2+(ctx.measureText(txt)).width;\
  771. var dy = 2+(ctx.measureText('MI')).width;\
  772. ctx.fillStyle='rgba(255,255,255,0.01)';\
  773. ctx.rect(0,0,xsize,ysize);\
  774. ctx.fill();\
  775. ctx.fillStyle=\"rgba(\"+color+\",0.01)\";\
  776. ctx.strokeStyle=\"rgba(\"+color+\",0.01)\";\
  777. for(var x = 0 ; x <= xsize ; x = x + dx ){\
  778. for(var y = 0 ; y <= ysize ; y = y + dy ){\
  779.  ctx.fillText(txt, x, y);\
  780. };\
  781. };\
  782. if( use_userdraw ){\
  783. text_fill_pattern = ctx;\
  784. }\
  785. else\
  786. {\
  787. setTimeout(function(){ filltoborder( x0,y0,color,color,canvas_type,true,ctx); },500);\
  788. };\
  789. return;};",canvas_root_id,canvas_root_id);
  790. break;
  791.  
  792. case DRAW_DIAMONDFILL:/* not used for userdraw */
  793. fprintf(js_include_file,"\n/* draw hatch fill */\
  794. var diamond_fill_pattern;\
  795. function draw_diamondfill(canvas_type,x0,y0,dx,dy,linewidth,color,stroke_opacity,xsize,ysize,use_userdraw){\
  796. if( dx == 0 || dy == 0 ){alert(\"increment is zero !!! \");return;};\
  797. var fc = %d+canvas_type;\
  798. var obj = create_canvas%d(fc,xsize,ysize);\
  799. var ctx = obj.getContext('2d');\
  800. var x;\
  801. var y;\
  802. ctx.lineWidth = linewidth;\
  803. ctx.fillStyle='rgba(255,255,255,0.01)';\
  804. ctx.rect(0,0,xsize,ysize);\
  805. ctx.fill();\
  806. ctx.strokeStyle=\"rgba(\"+color+\",0.01)\";\
  807. y = ysize;\
  808. ctx.beginPath();\
  809. for( x = 0 ; x <= xsize ; x = x + dx ){\
  810.  ctx.moveTo(x,0);\
  811.  ctx.lineTo(xsize,y);\
  812.  y = y - dy;\
  813. };\
  814. y=0;\
  815. for( x = xsize ; x >= 0 ; x = x - dx){\
  816. ctx.moveTo(x,ysize);\
  817. ctx.lineTo(0,y);\
  818. y = y + dy;\
  819. };\
  820. y = 0;\
  821. for( x = 0 ; x <= xsize ; x = x + dx ){\
  822. ctx.moveTo(x,0);\
  823. ctx.lineTo(0,y);\
  824. y = y + dy;\
  825. };\
  826. y = 0;\
  827. for( x = 0 ; x <= xsize ; x = x + dx ){\
  828. ctx.moveTo(xsize,y);\
  829. ctx.lineTo(x,ysize);\
  830. y = y + dy;\
  831. };\
  832. ctx.closePath();\
  833. ctx.stroke();\
  834. if( use_userdraw ){\
  835. diamond_fill_pattern = ctx;\
  836. }\
  837. else\
  838. {\
  839. setTimeout(function(){ filltoborder( x0,y0,color,color,canvas_type,true,ctx); },500);\
  840. };\
  841. return;\
  842. }",canvas_root_id,canvas_root_id);
  843. break;
  844.  
  845. case DRAW_HATCHFILL:/* not used for userdraw */
  846. fprintf(js_include_file,"\n/* draw hatch fill */\
  847. var hatch_fill_pattern;\
  848. function draw_hatchfill(canvas_type,x0,y0,dx,dy,linewidth,color,stroke_opacity,xsize,ysize,use_userdraw){\
  849. if( dx == 0 || dy == 0 ){alert(\"increment is zero !!! \");return;};\
  850. var fc = %d+canvas_type;\
  851. var obj = create_canvas%d(fc,xsize,ysize);\
  852. var ctx = obj.getContext('2d');\
  853. var x,y;\
  854. ctx.fillStyle='rgba(255,255,255,0.01)';\
  855. ctx.rect(0,0,xsize,ysize);\
  856. ctx.fill();\
  857. ctx.strokeStyle=\"rgba(\"+color+\",0.01)\";\
  858. ctx.lineWidth = linewidth;\
  859. y = ysize;\
  860. ctx.beginPath();\
  861. for( x = 0 ; x <= xsize ; x = x + dx ){\
  862. ctx.moveTo(x,0);\
  863. ctx.lineTo(xsize,y);\
  864. y = y - dy;\
  865. };\
  866. y = 0;\
  867. for( x = xsize ; x >= dx ; x = x - dx){\
  868. ctx.moveTo(x,ysize);\
  869. ctx.lineTo(0,y);\
  870. y = y + dy;\
  871. };\
  872. ctx.closePath();\
  873. ctx.stroke();\
  874. if( use_userdraw ){\
  875. hatch_fill_pattern = ctx;\
  876. }\
  877. else\
  878. {\
  879. setTimeout(function(){ filltoborder( x0,y0,color,color,canvas_type,true,ctx); },500);\
  880. };\
  881. return;};",canvas_root_id,canvas_root_id);
  882. break;
  883.  
  884. case DRAW_LINES:/*  used for js-tracing */
  885. fprintf(js_include_file,"\n/* draw lines */\
  886. function calc_line(x1,x2,y1,y2){\
  887. var marge = 2;\
  888. if(x1 < x2+marge && x1>x2-marge){\
  889.  return [x1,0,x1,ysize];\
  890. };\
  891. if(y1 < y2+marge && y1>y2-marge){\
  892.  return [0,y1,xsize,y1];\
  893. };\
  894. var Y1 = y1 - (x1)*(y2 - y1)/(x2 - x1);\
  895. var Y2 = y1 + (xsize - x1)*(y2 - y1)/(x2 - x1);\
  896. return [0,Y1,xsize,Y2];\
  897. };\
  898. var draw_lines = function(ctx,x_points,y_points,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle){\
  899. ctx.save();\
  900. var line = new Array(4);\
  901. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  902. ctx.lineWidth = line_width;\
  903. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  904. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  905. for(var p = 0 ; p < x_points.length ; p = p+2 ){\
  906.  line = calc_line(x_points[p],x_points[p+1],y_points[p],y_points[p+1]);\
  907.  ctx.beginPath();\
  908.  ctx.moveTo(line[0],line[1]);\
  909.  ctx.lineTo(line[2],line[3]);\
  910.  ctx.closePath();\
  911.  ctx.stroke();\
  912.  }\
  913.  ctx.restore();\
  914.  return;\
  915. };");
  916. break;
  917.  
  918. case DRAW_CROSSHAIRS:/*  used for tracing */
  919. fprintf(js_include_file,"\n/* draw crosshairs  */\
  920. var draw_crosshairs = function(ctx,x_points,y_points,line_width,crosshair_size,stroke_color,stroke_opacity,use_rotate,angle){\
  921. ctx.save();\
  922. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  923. ctx.lineWidth = line_width;\
  924. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  925. var x1,x2,y1,y2;\
  926. for(var p = 0 ; p < x_points.length ; p++ ){\
  927.  x1 = x_points[p] - crosshair_size;\
  928.  x2 = x_points[p] + crosshair_size;\
  929.  y1 = y_points[p] - crosshair_size;\
  930.  y2 = y_points[p] + crosshair_size;\
  931.  ctx.beginPath();\
  932.  ctx.moveTo(x1,y1);\
  933.  ctx.lineTo(x2,y2);\
  934.  ctx.closePath();\
  935.  ctx.stroke();\
  936.  ctx.beginPath();\
  937.  ctx.moveTo(x2,y1);\
  938.  ctx.lineTo(x1,y2);\
  939.  ctx.closePath();\
  940.  ctx.stroke();\
  941. }\
  942. ctx.restore();\
  943.  return;\
  944. };");
  945. break;
  946.  
  947. case DRAW_VIDEO:/* not  used for userdraw */
  948. fprintf(js_include_file,"\n/* draw video */\
  949. var draw_video = function(canvas_root_id,x,y,w,h,URL){\
  950. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  951. var video_div = document.createElement(\"div\");\
  952. canvas_div.appendChild(video_div);\
  953. video_div.style.position = \"absolute\";\
  954. video_div.style.left = x+\"px\";\
  955. video_div.style.top = y+\"px\";\
  956. video_div.style.width = w+\"px\";\
  957. video_div.style.height = h+\"px\";\
  958. var video = document.createElement(\"video\");\
  959. video_div.appendChild(video);\
  960. video.style.width = w+\"px\";\
  961. video.style.height = h+\"px\";\
  962. video.autobuffer = true;\
  963. video.controls = true;video.autoplay = false;\
  964. var src = document.createElement(\"source\");\
  965. src.type = \"video/mp4\";\
  966. src.src = URL;\
  967. video.appendChild(src);\
  968. video.load();\
  969. return;\
  970. };");
  971. break;
  972.  
  973. case DRAW_AUDIO:/* not used for userdraw */
  974. fprintf(js_include_file,"\n/* draw audio */\
  975. var draw_audio = function(canvas_root_id,x,y,w,h,loop,visible,URL1,URL2){\
  976. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  977. var audio_div = document.createElement(\"div\");\
  978. canvas_div.appendChild(audio_div);\
  979. audio_div.style.position = \"absolute\";\
  980. audio_div.style.left = x+\"px\";\
  981. audio_div.style.top = y+\"px\";\
  982. audio_div.style.width = w+\"px\";\
  983. audio_div.style.height = h+\"px\";\
  984. var audio = document.createElement(\"audio\");\
  985. audio_div.appendChild(audio);\
  986. audio.setAttribute(\"style\",\"width:\"+w+\"px;height:\"+h+\"px\");\
  987. audio.autobuffer = true;\
  988. if(visible == 1 ){ audio.controls = true;audio.autoplay = false;}else{ audio.controls = false;audio.autoplay = true;};\
  989. if(loop == 1 ){ audio.loop = true;}else{ audio.loop = false;};\
  990. var src1 = document.createElement(\"source\");\
  991. src1.type = \"audio/ogg\";\
  992. src1.src = URL1;\
  993. audio.appendChild(src1);\
  994. var src2 = document.createElement(\"source\");\
  995. src2.type = \"audio/mpeg\";\
  996. src2.src = URL2;\
  997. audio.appendChild(src2);\
  998. audio.load();\
  999. return;\
  1000. };");
  1001. break;
  1002.  
  1003. case DRAW_HTTP:/* not  used for userdraw */
  1004. fprintf(js_include_file,"\n/* draw http */\
  1005. var draw_http = function(canvas_root_id,x,y,w,h,URL){\
  1006. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  1007. var http_div = document.createElement(\"div\");\
  1008. var iframe = document.createElement(\"iframe\");\
  1009. canvas_div.appendChild(http_div);\
  1010. http_div.appendChild(iframe);\
  1011. iframe.src = URL;\
  1012. iframe.setAttribute(\"width\",w);\
  1013. iframe.setAttribute(\"height\",h);\
  1014. return;\
  1015. };");
  1016. break;
  1017.  
  1018. case DRAW_XML:
  1019. /*
  1020. !! function draw_xml(object)
  1021. !! produced by : DRAW_XML
  1022. !! used by commands: katex,latex,mathml,html,obabel
  1023. !! uses js-functions: calculate_size(xml_div),rad2deg(rad)
  1024. !! user interaction: drag,onclick,slider
  1025. !! reply function: read_dragdrop()
  1026.  
  1027. onclick=0; no interaction
  1028. onclick=1: click
  1029. onclick=2: drag ==> always centered (use_offset=4)
  1030. onclick=3: slider + click on object
  1031. onclick=4: slider (always active , keyword 'active' in slider params)
  1032. onclick=5: slider + dragdrop
  1033. xy:  drag_type = 0;
  1034. x:   drag_type = 1;
  1035. y:   drag_type = 2;
  1036.  
  1037. obj.type: mathml,katex,html,svg,image(bitmap) (attention: for centering image needs to be measured after loading page !!)
  1038. */
  1039.  
  1040. fprintf(js_include_file,"\n/* draw xml */\
  1041. function centered(xml_div,obj){\
  1042. var ww = 0.5*(parseFloat(window.getComputedStyle(xml_div).width));\
  1043. var hh = 0.5*(parseFloat(window.getComputedStyle(xml_div).height));\
  1044. obj.offset = [ ww , hh ];\
  1045. /*xml_div.style.left = obj.x[0] - obj.offset[0] +'px';\
  1046. xml_div.style.top  = obj.y[0] - obj.offset[1] +'px';*/\
  1047. xml_div.style.left = (obj.x[0] - obj.offset[0])/xsize*100 +'%%';\
  1048. xml_div.style.top  = (obj.y[0] - obj.offset[1])/ysize*100 +'%%';\
  1049. };\
  1050. function rad2deg(rad){return rad*180/(Math.PI);};\
  1051. if( typeof(slidergroup) !== 'object' ){ var slidergroup = [];};\
  1052. function draw_xml(obj){\
  1053. var mouse;var xy = [obj.x[0],obj.y[0]];\
  1054. var xml_div;\
  1055. dragdrop_reply[obj.object_cnt] = {object_cnt:obj.object_cnt,type:obj.onclick,x:obj.x,y:obj.y,r:0,angle:obj.angle,clicked:0};\
  1056. if( obj.once ){\
  1057.  xml_div = document.createElement('DIV');\
  1058.  canvas_div.appendChild(xml_div);\
  1059.  if( obj.type == 'katex' ){ obj.mathml = LoadKaTeX('html',obj.mathml);};\
  1060.  xml_div.id = 'xml_div'+obj.id;\
  1061.  xml_div.innerHTML = obj.mathml;\
  1062.  xml_div.classList.add('canvasdraw_xml');\
  1063.  xml_div.style.color = \"rgba(\"+obj.stroke_color+\",\"+obj.stroke_opacity+\")\";\
  1064.  xml_div.style.font = obj.fontfamily;\
  1065.  if( ! obj.rotation_center){obj.rotation_center = [obj.x[0],obj.y[0]];}else{obj.rotation_center=[x2px(obj.rotation_center[0]) ,y2px(obj.rotation_center[1]) ];};\
  1066.  if( obj.use_center == 1 ){if( obj.type == 'image' ){xml_div.addEventListener('load',function(e){centered(xml_div,obj);},true);}else{%s};};\
  1067. } else {\
  1068.  xml_div = document.getElementById('xml_div'+obj.id );\
  1069. };\
  1070. if( typeof(xml_div) === 'undefined' ){console.log('[canvasutil] xml_div undefined'); return;};\
  1071. /*xml_div.style.left = parseInt(obj.x[0] - obj.offset[0]) +'px';\
  1072. xml_div.style.top  = parseInt(obj.y[0] - obj.offset[1]) +'px';*/\
  1073. xml_div.style.left = parseInt((obj.x[0] - obj.offset[0])/xsize*100) +'%%';\
  1074. xml_div.style.top  = parseInt((obj.y[0] - obj.offset[1])/ysize*100) +'%%';\
  1075. var back_color = 'rgba('+obj.fill_color+','+obj.fill_opacity+')';\
  1076. var no_color = 'rgba(255,255,255,0)';var dragging = false;\
  1077. if( obj.use_affine != 0 || obj.angle != 0 ){\
  1078.  xml_div.style.transform = 'matrix('+obj.transform[0]+','+obj.transform[1]+','+obj.transform[2]+','+obj.transform[3]+','+obj.transform[4]+','+obj.transform[5]+') rotate('+rad2deg(obj.angle)+'deg)';\
  1079. };\
  1080. if( obj.once ){\
  1081.  obj.once = false;\
  1082.  switch(obj.onclick){\
  1083.   case 2:\
  1084.    if(isTouch){\
  1085.     canvas_div.addEventListener('touchmove' ,function(evt){ evt.preventDefault();if(!dragging){return;};mouse = getMouse(evt.changedTouches[0],xml_div);xy = multisnap_check( mouse.x,mouse.y,obj.use_snap);xml_div.style.left = xy[0] - obj.offset[0] - obj.transform[4] + 'px';xml_div.style.top = xy[1] - obj.offset[1] - obj.transform[5] + 'px';},false);\
  1086.     canvas_div.addEventListener('touchend'  ,function(evt){ evt.preventDefault();dragging = false;xml_div.style.backgroundColor = no_color;dragdrop_reply[obj.object_cnt] = {object_cnt:obj.object_cnt,type:obj.onclick,x:xy[0],y:xy[1],r:0,angle:obj.angle,clicked:0};obj.x[0] = xy[0];obj.y[0] = xy[1];},false);\
  1087.     xml_div.addEventListener('touchstart',function(evt){evt.preventDefault();if(dragging){dragging = false;xml_div.style.backgroundColor = no_color;}else{dragging = true;xml_div.style.backgroundColor = back_color;};},false);\
  1088.     xml_div.addEventListener('touchend'  ,function(evt){ evt.preventDefault();dragging = false;xml_div.style.backgroundColor = no_color;dragdrop_reply[obj.object_cnt] = {object_cnt:obj.object_cnt,type:obj.onclick,x:xy[0],y:xy[1],r:0,angle:obj.angle,clicked:0};obj.x[0] = xy[0];obj.y[0] = xy[1];},false);\
  1089.    } else {\
  1090.     canvas_div.addEventListener('mousemove',function(evt){if(!dragging){return;};mouse = getMouse(evt,xml_div);xy = multisnap_check( mouse.x,mouse.y,obj.use_snap);xml_div.style.left = xy[0] - obj.offset[0] - obj.transform[4] + 'px';xml_div.style.top = xy[1] - obj.offset[1] - obj.transform[5] + 'px';},false);\
  1091.     canvas_div.addEventListener('mouseup',function(evt){dragging = false;xml_div.style.backgroundColor = no_color;dragdrop_reply[obj.object_cnt] = {object_cnt:obj.object_cnt,type:obj.onclick,x:xy[0],y:xy[1],r:0,angle:obj.angle,clicked:0};obj.x[0] = xy[0];obj.y[0] = xy[1];},false);\
  1092.     xml_div.addEventListener('mousedown', function(evt){if(dragging){dragging = false;xml_div.style.backgroundColor = no_color;}else{dragging = true;xml_div.style.backgroundColor = back_color;};},false);\
  1093.    };\
  1094.    break;\
  1095.   case 1:\
  1096.    if(isTouch){\
  1097.     xml_div.addEventListener('touchstart', function(e){ e.preventDefault();if(dragdrop_reply[obj.object_cnt].clicked == 0){ dragdrop_reply[obj.object_cnt].clicked = 1;xml_div.style.backgroundColor = back_color;}else{dragdrop_reply[obj.object_cnt].clicked = 0;xml_div.style.backgroundColor = no_color;};} ,false);\
  1098.    } else {\
  1099.     xml_div.addEventListener('mousedown'  , function(evt){if(dragdrop_reply[obj.object_cnt].clicked == 0){ dragdrop_reply[obj.object_cnt].clicked = 1;xml_div.style.backgroundColor = back_color;}else{dragdrop_reply[obj.object_cnt].clicked = 0;xml_div.style.backgroundColor = no_color;};} ,false);\
  1100.    };\
  1101.    break;\
  1102.   case 3:\
  1103.    if(isTouch){\
  1104.     xml_div.addEventListener('touchstart',function(evt){ if(slidergroup[obj.object_cnt] == null ){ slidergroup[obj.object_cnt] = obj;xml_div.style.backgroundColor = back_color;}else{ slidergroup[obj.object_cnt] = null;xml_div.style.backgroundColor = no_color;};} ,false);\
  1105.    } else {\
  1106.     xml_div.addEventListener('mousedown' ,function(evt){ if(slidergroup[obj.object_cnt] == null ){ slidergroup[obj.object_cnt] = obj;xml_div.style.backgroundColor = back_color;}else{ slidergroup[obj.object_cnt] = null;xml_div.style.backgroundColor = no_color;};} ,false);\
  1107.    };\
  1108.    break;\
  1109.   case 4:slidergroup[obj.object_cnt] = obj;break;\
  1110.   case 5:slidergroup[obj.object_cnt] = obj;\
  1111.    canvas_div.addEventListener('mousemove',function(evt){if(!dragging){return;};mouse = getMouse(evt,xml_div);xy = multisnap_check( mouse.x,mouse.y,obj.use_snap);xml_div.style.left = xy[0] - obj.offset[0] - obj.transform[4] + 'px';xml_div.style.top = xy[1] - obj.offset[1] - obj.transform[5] + 'px';},false);\
  1112.    canvas_div.addEventListener('mouseup',function(evt){dragging = false;xml_div.style.backgroundColor = no_color;dragdrop_reply[obj.object_cnt] = {object_cnt:obj.object_cnt,type:obj.onclick,x:xy[0],y:xy[1],r:0,angle:obj.angle,clicked:0};obj.x[0] = xy[0];obj.y[0] = xy[1];},false);\
  1113.    xml_div.addEventListener('mousedown', function(evt){if(dragging){dragging = false;xml_div.style.backgroundColor = no_color;}else{dragging = true;xml_div.style.backgroundColor = back_color;};},false);\
  1114.    break;\
  1115.   default: break;\
  1116.  };\
  1117. };\
  1118. return;\
  1119. };",mathjax);
  1120.  
  1121. /*
  1122. console.log('angle='+obj.angle+'obj.use_center='+obj.use_center+'id='+obj.id+'xml_div.id = '+xml_div.id+' once ='+obj.once+' offset='+ obj.offset+' div x = '+xml_div.style.left+' div y ='+xml_div.style.top+' obj.x='+px2x(obj.x)+'obj.y='+px2y(obj.y));\
  1123. */
  1124. break;
  1125.  
  1126. case DRAW_SGRAPH:
  1127. /*
  1128.  xstart = given
  1129.  ystart = given
  1130.  sgraph(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily)
  1131. */
  1132. fprintf(js_include_file,"\n/* draw sgraph */\
  1133. var draw_sgraph = function(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily,opacity,font_size){\
  1134. 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);};\
  1135. var ctx = obj.getContext(\"2d\");\
  1136. ctx.font = fontfamily;\
  1137. var minor_opacity = 0.8*opacity;\
  1138. ctx.clearRect(0,0,xsize,ysize);\
  1139. var zero_x = 0.1*xsize;\
  1140. var zero_y = 0.9*ysize;\
  1141. var snor_x;var snor_y;\
  1142. if( xstart != xmin){\
  1143.  snor_x = 0.1*xsize;\
  1144. }else{\
  1145.  snor_x = 0;\
  1146.  xstart = xmin;\
  1147. };\
  1148. ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  1149. ctx.lineWidth = 2;\
  1150. ctx.beginPath();\
  1151. ctx.moveTo(xsize,zero_y);\
  1152. ctx.lineTo(zero_x,zero_y);\
  1153. ctx.lineTo(zero_x,0);\
  1154. ctx.stroke();\
  1155. ctx.closePath();\
  1156. ctx.beginPath();\
  1157. ctx.moveTo(zero_x,zero_y);\
  1158. ctx.lineTo(zero_x + 0.25*snor_x,zero_y - 0.1*snor_x);\
  1159. ctx.lineTo(zero_x + 0.5*snor_x,zero_y + 0.1*snor_x);\
  1160. ctx.lineTo(zero_x + 0.75*snor_x,zero_y - 0.1*snor_x);\
  1161. ctx.lineTo(zero_x + snor_x,zero_y);\
  1162. ctx.stroke();\
  1163. ctx.closePath();\
  1164. ctx.beginPath();\
  1165. var num = xstart;\
  1166. var flipflop = 1;\
  1167. var step_x = xmajor*(xsize - zero_x - snor_x)/(xmax - xstart);\
  1168. var txtsize;var txt_marge=step_x - 5;\
  1169. for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  1170.  txtsize = ctx.measureText(num).width;\
  1171.  if( txtsize > txt_marge ){if( flipflop == 1 ){flipflop = 0;}else{flipflop = 1;};};\
  1172.  if( flipflop == 1){\
  1173.   ctx.fillText(num,x - 0.5*txtsize,zero_y+font_size);\
  1174.  } else {\
  1175.   ctx.fillText(num,x - 0.5*txtsize,zero_y+2*font_size);\
  1176.  };\
  1177.  num = num + xmajor;\
  1178. };\
  1179. ctx.stroke();\
  1180. ctx.closePath();\
  1181. ctx.lineWidth = 1;\
  1182. ctx.beginPath();\
  1183. for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  1184.   ctx.moveTo(x,zero_y);\
  1185.   ctx.lineTo(x,0);\
  1186. };\
  1187. ctx.stroke();\
  1188. ctx.closePath();\
  1189. if( xminor > 1){\
  1190.  ctx.lineWidth = 0.5;\
  1191.  ctx.beginPath();\
  1192.  ctx.strokeStyle = \"rgba(\"+minorcolor+\",\"+minor_opacity+\")\";\
  1193.  var minor_step_x = step_x / xminor;\
  1194.  var nx;\
  1195.  for(var x = zero_x+snor_x; x < xsize;x = x + step_x){\
  1196.    num = 1;\
  1197.    for(var p = 1 ; p < xminor ; p++){\
  1198.     nx = x + num*minor_step_x;\
  1199.     ctx.moveTo(nx,zero_y);\
  1200.     ctx.lineTo(nx,0);\
  1201.     num++;\
  1202.    };\
  1203.  };\
  1204.  ctx.stroke();\
  1205.  ctx.closePath();\
  1206.  ctx.beginPath();\
  1207.  ctx.lineWidth = 2;\
  1208.  ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  1209.  for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  1210.   ctx.moveTo(x,zero_y);ctx.lineTo(x,zero_y - 12);\
  1211.  };\
  1212.  for(var x = zero_x+snor_x ; x < xsize;x = x + minor_step_x){\
  1213.   ctx.moveTo(x,zero_y);ctx.lineTo(x,zero_y - 6);\
  1214.  };\
  1215.  ctx.stroke();\
  1216.  ctx.closePath();\
  1217.  ctx.lineWidth = 0.5;\
  1218. };\
  1219. xmin = xstart - (xmajor*(zero_x+snor_x)/step_x);\
  1220. if( ystart != ymin){\
  1221.  snor_y = 0.1*ysize;\
  1222. } else {\
  1223.  snor_y = 0;\
  1224.  ystart = ymin;\
  1225. };\
  1226. ctx.lineWidth = 2;\
  1227. ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  1228. ctx.beginPath();\
  1229. ctx.moveTo(zero_x,zero_y);\
  1230. ctx.lineTo(zero_x - 0.1*snor_y,zero_y - 0.25*snor_y);\
  1231. ctx.lineTo(zero_x + 0.1*snor_y,zero_y - 0.5*snor_y);\
  1232. ctx.lineTo(zero_x - 0.1*snor_y,zero_y - 0.75*snor_y);\
  1233. ctx.lineTo(zero_x,zero_y - snor_y);\
  1234. ctx.stroke();\
  1235. ctx.closePath();\
  1236. ctx.beginPath();\
  1237. ctx.lineWidth = 1;\
  1238. num = ystart;\
  1239. var step_y = ymajor*(zero_y - snor_y)/(ymax - ystart);\
  1240. for(var y = zero_y - snor_y ; y > 0; y = y - step_y){\
  1241.  ctx.moveTo(zero_x,y);\
  1242.  ctx.lineTo(xsize,y);\
  1243.  ctx.fillText(num,zero_x - ctx.measureText(num+\" \").width,parseInt(y+0.2*font_size));\
  1244.  num = num + ymajor;\
  1245. };\
  1246. ctx.stroke();\
  1247. ctx.closePath();\
  1248. if( yminor > 1){\
  1249.  ctx.lineWidth = 0.5;\
  1250.  ctx.beginPath();\
  1251.  ctx.strokeStyle = \"rgba(\"+minorcolor+\",\"+minor_opacity+\")\";\
  1252.  var minor_step_y = step_y / yminor;\
  1253.  var ny;\
  1254.  for(var y = 0 ; y < zero_y - snor_y ;y = y + step_y){\
  1255.   num = 1;\
  1256.   for(var p = 1 ;p < yminor;p++){\
  1257.     ny = y + num*minor_step_y;\
  1258.     ctx.moveTo(zero_x,ny);\
  1259.     ctx.lineTo(xsize,ny);\
  1260.     num++;\
  1261.    };\
  1262.  };\
  1263.  ctx.stroke();\
  1264.  ctx.closePath();\
  1265.  ctx.lineWidth = 2;\
  1266.  ctx.beginPath();\
  1267.  ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  1268.  for(var y = zero_y - snor_y ; y > 0 ;y = y - step_y){\
  1269.   ctx.moveTo(zero_x,y);\
  1270.   ctx.lineTo(zero_x+12,y);\
  1271.  };\
  1272.  for(var y = zero_y - snor_y ; y > 0 ;y = y - minor_step_y){\
  1273.   ctx.moveTo(zero_x,y);\
  1274.   ctx.lineTo(zero_x+6,y);\
  1275.  };\
  1276.  ctx.stroke();\
  1277.  ctx.closePath();\
  1278. };\
  1279. ymin = ystart - (ymajor*(ysize - zero_y + snor_y)/step_y);\
  1280. if( typeof(legend%d)  !== 'undefined' ){\
  1281.  ctx.globalAlpha = 1.0;\
  1282.  var y_offset = 2*font_size;\
  1283.  var txt;var txt_size;\
  1284.  var x_offset = xsize - 2*font_size;\
  1285.  var l_length = legend%d.length;var barcolor = new Array();\
  1286.  if( typeof(legendcolors%d) !== 'undefined' ){\
  1287.   for(var p = 0 ; p < l_length ; p++){\
  1288.    barcolor[p] = legendcolors%d[p];\
  1289.   };\
  1290.  } else {\
  1291.   if( barcolor.length == 0 ){\
  1292.    for(var p = 0 ; p < l_length ; p++){\
  1293.     barcolor[p] = stroke_color;\
  1294.    };\
  1295.   };\
  1296.  };\
  1297.  for(var p = 0; p < l_length; p++){\
  1298.   ctx.fillStyle = barcolor[p];\
  1299.   txt = legend%d[p];\
  1300.   txt_size = ctx.measureText(txt).width;\
  1301.   ctx.fillText(legend%d[p],x_offset - txt_size, y_offset);\
  1302.   y_offset = parseInt(y_offset + 1.5*font_size);\
  1303.  };\
  1304. };\
  1305. if( typeof(xaxislabel) !== 'undefined' ){\
  1306.   ctx.fillStyle = \'#000000\';\
  1307.   var txt_size = ctx.measureText(xaxislabel).width + 4 ;\
  1308.   ctx.fillText(xaxislabel,xsize - txt_size, zero_y - 7);\
  1309. };\
  1310. if( typeof(yaxislabel) !== 'undefined'){\
  1311.   ctx.save();\
  1312.   ctx.fillStyle = \'#000000\';\
  1313.   var txt_size = ctx.measureText(yaxislabel).width;\
  1314.   ctx.translate(zero_x+8 + font_size,txt_size+font_size);\
  1315.   ctx.rotate(-0.5*Math.PI);\
  1316.   ctx.fillText(yaxislabel,0,0);\
  1317.   ctx.restore();\
  1318. };\
  1319. };",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);
  1320. break;
  1321.  
  1322. case DRAW_NUMBERLINE:
  1323. fprintf(js_include_file,"\n/* draw numberline */\
  1324. var draw_numberline = function(canvas_type,use_axis_numbering,x0,x1,xmajor,xminor,y0,y1,linewidth,strokecolor,strokeopacity,fontfamily,fontcolor,precision){\
  1325. var obj = create_canvas%d(canvas_type,xsize,ysize);\
  1326. var ctx = obj.getContext(\"2d\");\
  1327. ctx.lineWidth = linewidth || 1;\
  1328. ctx.strokeStyle = \"rgba(\"+strokecolor+\",\"+strokeopacity+\")\";\
  1329. ctx.font = fontfamily || 'Arial 12px';\
  1330. var fontsize = parseInt(ctx.font);\
  1331. ctx.fillStyle =  \"rgba(\"+fontcolor+\",\"+strokeopacity+\")\";\
  1332. x1 = x2px(x1);\
  1333. x0 = x2px(x0);\
  1334. y0 = y2px(y0);\
  1335. y1 = y2px(y1);\
  1336. var sub_devision = -1;\
  1337. if( xminor%%2 == 0 ){ sub_devision = xminor/2; };\
  1338. var ybase1 = parseInt( y0 + fontsize + 2 );\
  1339. var ybase2 = parseInt( ybase1 + fontsize + 2 );\
  1340. var yh = Math.abs(parseInt( y0 - 0.3*(y0 -y1)));\
  1341. var ys = Math.abs(parseInt( y0 - 0.6*(y0 -y1)));\
  1342. xmajor = x2px(xmajor) - x2px(0);\
  1343. var i;var len;var p;\
  1344. xminor = xmajor / xminor;\
  1345. ctx.beginPath();\
  1346. for(p = x0 ; p < x1 ; p = p + xmajor){\
  1347.  ctx.moveTo(p,y0);ctx.lineTo(p,y1);i = 0;\
  1348.  for(var s = p ; s < p + xmajor ; s = s + xminor ){\
  1349.   ctx.moveTo(s,y0);\
  1350.   if( sub_devision == i){ ctx.lineTo(s,ys); } else { ctx.lineTo(s,yh); };\
  1351.   i++;\
  1352.  };\
  1353. };\
  1354. ctx.moveTo(p,y0);ctx.lineTo(p,y1);\
  1355. ctx.closePath();\
  1356. ctx.stroke();\
  1357. if( use_axis_numbering >-1 ){\
  1358.  var str = x_strings[use_axis_numbering];\
  1359.  len = str.length;if((len/2+0.5)%%2 == 0){ alert(\"xaxis number unpaired:  text missing ! \");return;};\
  1360.  var corr;var x_nums;var x_text;var flipflop = 0;var off = ybase1;\
  1361.  ctx.beginPath();\
  1362.  if( x_strings_up[use_axis_numbering] == null){\
  1363.   for(var p = 0 ; p < len ; p = p+2){\
  1364.    var x_nums = x2px(eval(str[p]));\
  1365.    var x_text = str[p+1];\
  1366.    corr = ctx.measureText(x_text).width;\
  1367.    if( corr > xmajor){ if(flipflop == 0 ){flipflop = 1; off = ybase2;}else{flipflop = 0; off = ybase1;};};\
  1368.    ctx.fillText(x_text,parseInt(x_nums-0.5*corr),off);\
  1369.   };\
  1370.  } else {\
  1371.   for(var p = 0 ; p < len ; p = p+2){\
  1372.    x_nums = x2px(eval(str[p]));\
  1373.    x_text = str[p+1];\
  1374.    corr = ctx.measureText(x_text).width + ybase1 - fontsize;\
  1375.    ctx.save();\
  1376.    ctx.translate(x_nums+0.5*fontsize, corr);\
  1377.    ctx.rotate(-1.5708);\
  1378.    ctx.fillText(x_text,0,0);\
  1379.    ctx.restore();\
  1380.   };\
  1381.  }\
  1382. } else {\
  1383.  var corr;var num;var flipflop = 0;var off = ybase1;\
  1384.  var prec = parseInt(Math.log(precision)/Math.log(10));\
  1385.  for(var p = x0 ; p < x1+xmajor ; p = p+xmajor){\
  1386.   num = (px2x(p)).toFixed(prec);\
  1387.   corr = ctx.measureText(num).width;\
  1388.   if( corr > xmajor){ if(flipflop == 0 ){flipflop = 1; off = ybase2;}else{flipflop = 0; off = ybase1;};};\
  1389.   ctx.fillText(num,parseInt(p - 0.5*corr),off);\
  1390.  };\
  1391. };\
  1392. };",canvas_root_id);
  1393. break;
  1394.  
  1395. case DRAW_GRID:/* not used for userdraw */
  1396. fprintf(js_include_file,"\n/* draw grid */\
  1397. 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_dashed,dashtype0,dashtype1,font_color,fill_opacity){\
  1398. 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);};\
  1399. var ctx = obj.getContext(\"2d\");ctx.clearRect(0,0,xsize,ysize);\
  1400. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  1401. ctx.save();\
  1402. var stroke_color = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  1403. ctx.fillStyle = \"rgba(\"+font_color+\",\"+1.0+\")\";\
  1404. var axis_color = \"rgba(\"+axis_color+\",\"+stroke_opacity+\")\";\
  1405. ctx.font = font_family;\
  1406. var barcolor = new Array();\
  1407. var xstep = xsize*xmajor/(xmax - xmin);\
  1408. var ystep = ysize*ymajor/(ymax - ymin);\
  1409. var x2step = xstep / xminor;\
  1410. var y2step = ystep / yminor;\
  1411. var zero_x = x2px(0);var zero_y = y2px(0);var f_x;var f_y;\
  1412. if(xmin < 0 ){ f_x = -1;}else{ f_x = 1;};\
  1413. if(ymin < 0 ){ f_y = -1;}else{ f_y = 1;};\
  1414. ctx.beginPath();\
  1415. ctx.lineWidth = line_width;\
  1416. ctx.strokeStyle = stroke_color;\
  1417. for(var p = zero_x ; p < xsize; p = p + xstep){\
  1418. ctx.moveTo(p,0);\
  1419. ctx.lineTo(p,ysize);\
  1420. };\
  1421. for(var p = zero_x ; p > 0; p = p - xstep){\
  1422. ctx.moveTo(p,0);\
  1423. ctx.lineTo(p,ysize);\
  1424. };\
  1425. for(var p = zero_y ; p < ysize; p = p + ystep){\
  1426. ctx.moveTo(0,p);\
  1427. ctx.lineTo(xsize,p);\
  1428. };\
  1429. for(var p = zero_y ; p > 0; p = p - ystep){\
  1430. ctx.moveTo(0,p);\
  1431. ctx.lineTo(xsize,p);\
  1432. };\
  1433. if( typeof(xaxislabel) !== 'undefined' ){\
  1434. ctx.save();\
  1435. ctx.font = \"italic \"+font_size+\"px Arial\";\
  1436. var corr =  parseInt(1.1*ctx.measureText(xaxislabel).width);\
  1437. ctx.fillText(xaxislabel,xsize - corr,zero_y - tics_length - 0.4*font_size);\
  1438. ctx.restore();\
  1439. };\
  1440. if( typeof(yaxislabel) !== 'undefined' ){\
  1441. ctx.save();\
  1442. ctx.font = \"italic \"+font_size+\"px Arial\";\
  1443. var corr = parseInt(ctx.measureText(yaxislabel).width + font_size);\
  1444. ctx.translate(zero_x+tics_length + font_size,corr);\
  1445. ctx.rotate(-0.5*Math.PI);\
  1446. ctx.fillText(yaxislabel,0,0);\
  1447. ctx.restore();\
  1448. };\
  1449. ctx.stroke();\
  1450. ctx.closePath();",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  1451.  
  1452. if( use_axis == 1 ){
  1453. fprintf(js_include_file,"\
  1454. ctx.save();\
  1455. ctx.beginPath();\
  1456. ctx.strokeStyle = stroke_color;\
  1457. ctx.lineWidth = 0.6*line_width;\
  1458. for(var p = zero_x ; p < xsize; p = p + x2step){\
  1459.  ctx.moveTo(p,0);\
  1460.  ctx.lineTo(p,ysize);\
  1461. };\
  1462. for(var p = zero_x ; p > 0; p = p - x2step){\
  1463.  ctx.moveTo(p,0);\
  1464.  ctx.lineTo(p,ysize);\
  1465. };\
  1466. for(var p = zero_y ; p < ysize; p = p + y2step){\
  1467.  ctx.moveTo(0,p);\
  1468.  ctx.lineTo(xsize,p);\
  1469. };\
  1470. for(var p = zero_y ; p > 0; p = p - y2step){\
  1471.  ctx.moveTo(0,p);\
  1472.  ctx.lineTo(xsize,p);\
  1473. };\
  1474. ctx.stroke();\
  1475. ctx.closePath();\
  1476. ctx.beginPath();\
  1477. ctx.lineWidth = 2*line_width;\
  1478. ctx.strokeStyle = axis_color;\
  1479. ctx.moveTo(0,zero_y);\
  1480. ctx.lineTo(xsize,zero_y);\
  1481. ctx.moveTo(zero_x,0);\
  1482. ctx.lineTo(zero_x,ysize);\
  1483. ctx.stroke();\
  1484. ctx.closePath();\
  1485. ctx.lineWidth = line_width+0.5;\
  1486. ctx.beginPath();\
  1487. for(var p = zero_x ; p < xsize; p = p + xstep){\
  1488.  ctx.moveTo(p,zero_y-tics_length);\
  1489.  ctx.lineTo(p,zero_y+tics_length);\
  1490. };\
  1491. for(var p = zero_x ; p > 0; p = p - xstep){\
  1492.  ctx.moveTo(p,zero_y-tics_length);\
  1493.  ctx.lineTo(p,zero_y+tics_length);\
  1494. };\
  1495. for(var p = zero_y ; p < ysize; p = p + ystep){\
  1496.  ctx.moveTo(zero_x-tics_length,p);\
  1497.  ctx.lineTo(zero_x+tics_length,p);\
  1498. };\
  1499. for(var p = zero_y ; p > 0; p = p - ystep){\
  1500.  ctx.moveTo(zero_x-tics_length,p);\
  1501.  ctx.lineTo(zero_x+tics_length,p);\
  1502. };\
  1503. for(var p = zero_x ; p < xsize; p = p + x2step){\
  1504.  ctx.moveTo(p,zero_y-0.5*tics_length);\
  1505.  ctx.lineTo(p,zero_y+0.5*tics_length);\
  1506. };\
  1507. for(var p = zero_x ; p > 0; p = p - x2step){\
  1508.  ctx.moveTo(p,zero_y-0.5*tics_length);\
  1509.  ctx.lineTo(p,zero_y+0.5*tics_length);\
  1510. };\
  1511. for(var p = zero_y ; p < ysize; p = p + y2step){\
  1512.  ctx.moveTo(zero_x-0.5*tics_length,p);\
  1513.  ctx.lineTo(zero_x+0.5*tics_length,p);\
  1514. };\
  1515. for(var p = zero_y ; p > 0; p = p - y2step){\
  1516.  ctx.moveTo(zero_x-0.5*tics_length,p);\
  1517.  ctx.lineTo(zero_x+0.5*tics_length,p);\
  1518. };\
  1519. ctx.stroke();\
  1520. ctx.closePath();\
  1521. ctx.restore();");
  1522. }
  1523.  
  1524. if( use_axis_numbering != -1 ){
  1525. fprintf(js_include_file,"\
  1526. ctx.save();\
  1527. ctx.fillColor = axis_color;\
  1528. ctx.strokeStyle = axis_color;\
  1529. ctx.lineWidth = 2*line_width;\
  1530. ctx.font = font_family;\
  1531. var shift = zero_y+2*font_size;var flip=0;var skip=0;var corr;var cnt;var disp_cnt;var prec;\
  1532. if( x_strings[use_axis_numbering] != null ){\
  1533.  var str = x_strings[use_axis_numbering];\
  1534.  var len = str.length;if((len/2+0.5)%%2 == 0){ alert(\"xaxis number unpaired:  text missing ! \");return;};\
  1535.  ctx.beginPath();\
  1536.  if( x_strings_up[use_axis_numbering] == null){\
  1537.   for(var p = 0 ; p < len ; p = p+2){\
  1538.    var x_nums = x2px(eval(str[p]));\
  1539.    var x_text = str[p+1];\
  1540.    corr = ctx.measureText(x_text).width;\
  1541.    skip = 1.2*corr/xstep;\
  1542.    if( zero_y+2*font_size > ysize ){shift = ysize - 2*font_size;};\
  1543.    if( skip > 1 ){if(flip == 0 ){flip = 1; shift = shift + font_size;}else{flip = 0; shift = shift - font_size;};};\
  1544.    ctx.fillText(x_text,parseInt(x_nums-0.5*corr),shift);\
  1545.    ctx.moveTo(x_nums,zero_y - tics_length);\
  1546.    ctx.lineTo(x_nums,zero_y + tics_length);\
  1547.   };\
  1548.  } else {\
  1549.   for(var p = 0 ; p < len ; p = p+2){\
  1550.    var x_nums = x2px(eval(str[p]));\
  1551.    var x_text = str[p+1];\
  1552.    corr = 2 + tics_length + zero_y + ctx.measureText(x_text).width;\
  1553.    if( corr > ysize ){corr = ysize;};\
  1554.    ctx.save();\
  1555.    ctx.translate(x_nums+0.25*font_size, corr);\
  1556.    ctx.rotate(-1.5708);\
  1557.    ctx.fillText(x_text,0,0);\
  1558.    ctx.restore();\
  1559.    ctx.moveTo(x_nums,zero_y - tics_length);\
  1560.    ctx.lineTo(x_nums,zero_y + tics_length);\
  1561.   };\
  1562.  };\
  1563.  ctx.closePath();\
  1564. } else {\
  1565.  skip = 1;cnt = px2x(zero_x);\
  1566.  prec = Math.log(precision)/(Math.log(10));\
  1567.  var y_basis;if(f_y == 1){ y_basis = ysize }else{ y_basis = zero_y + 1.4*font_size;};\
  1568.  for( var p = zero_x ; p < xsize ; p = p+xstep){\
  1569.   if(skip == 0 ){\
  1570.    disp_cnt = cnt.toFixed(prec);\
  1571.    corr = ctx.measureText(disp_cnt).width;\
  1572.    skip = parseInt(1.2*corr/xstep);\
  1573.    ctx.fillText(disp_cnt,p-0.5*corr,y_basis);\
  1574.   } else {\
  1575.    skip--;\
  1576.   };\
  1577.   cnt = cnt + xmajor;\
  1578.  };\
  1579.  cnt = px2x(zero_x);skip = 1;\
  1580.  for( var p = zero_x ; p > 0 ; p = p-xstep){\
  1581.   if(skip == 0 ){\
  1582.    disp_cnt = cnt.toFixed(prec);\
  1583.    corr = ctx.measureText(disp_cnt).width;\
  1584.    skip = parseInt(1.2*corr/xstep);\
  1585.    ctx.fillText(disp_cnt,p-0.5*corr,y_basis);\
  1586.   } else {\
  1587.    skip--;\
  1588.   };\
  1589.   cnt = cnt - xmajor;\
  1590.  };\
  1591. };\
  1592. if( y_strings != null ){\
  1593.  var len = y_strings.length;if((len/2+0.5)%%2 == 0){ alert(\"yaxis number unpaired:  text missing ! \");return;};\
  1594.  ctx.beginPath();\
  1595.  for(var p = 0 ; p < len ; p = p+2){\
  1596.   var y_nums = y2px(eval(y_strings[p]));\
  1597.   var y_text = y_strings[p+1];\
  1598.   corr = 2 + tics_length + ctx.measureText(y_text).width;\
  1599.   if( corr > zero_x){corr = parseInt(zero_x+2); }\
  1600.   ctx.fillText(y_text,zero_x - corr,y_nums + 0.5*font_size);\
  1601.   ctx.moveTo(zero_x - tics_length,y_nums);\
  1602.   ctx.lineTo(zero_x + tics_length,y_nums);\
  1603.  };\
  1604.  ctx.closePath();\
  1605. } else {\
  1606.  if(f_x == 1){ corr = 1.5*tics_length; }\
  1607.  cnt = px2y(zero_y);skip = 1;\
  1608.  for( var p = zero_y ; p < ysize ; p = p+ystep){\
  1609.   if(skip == 0 ){\
  1610.    skip = parseInt(1.4*font_size/ystep);\
  1611.    disp_cnt = cnt.toFixed(prec);\
  1612.    if(f_x == -1 ){ corr = parseInt(zero_x - (2 + tics_length + ctx.measureText(disp_cnt).width));};\
  1613.    ctx.fillText(disp_cnt,parseInt(corr),parseInt(p+(0.4*font_size)));\
  1614.   } else {\
  1615.    skip--;\
  1616.   };\
  1617.   cnt = cnt - ymajor;\
  1618.  };\
  1619.  corr = 0;cnt = px2y(zero_y);skip = 1;\
  1620.  if(f_x == 1){ corr = 1.5*tics_length; }\
  1621.  for( var p = zero_y ; p > 0 ; p = p-ystep){\
  1622.   if(skip == 0 ){\
  1623.    skip = parseInt(1.4*font_size/ystep);\
  1624.    disp_cnt = cnt.toFixed(prec);\
  1625.    if(f_x == -1 ){corr = parseInt(zero_x - (2 + tics_length + ctx.measureText(disp_cnt).width));};\
  1626.    ctx.fillText(disp_cnt,parseInt(corr),parseInt(p+(0.4*font_size)));\
  1627.   } else {\
  1628.    skip--;\
  1629.   };\
  1630.   cnt = cnt + ymajor;\
  1631.  };\
  1632. };\
  1633. ctx.stroke();\
  1634. ctx.restore();");
  1635. }
  1636.  
  1637. if( legend_cnt != -1 ){
  1638. fprintf(js_include_file,"ctx.save();\
  1639. ctx.globalAlpha = 1.0;\
  1640. ctx.font = \"bold \"+font_size+\"px Arial\";\
  1641. var y_offset = 2*font_size;\
  1642. var txt;var txt_size;\
  1643. var x_offset = xsize - 2*font_size;\
  1644. var l_length = legend0.length;\
  1645. if( typeof(legendcolors0) !== 'undefined' ){\
  1646.  for(var p = 0 ; p < l_length ; p++){\
  1647.    barcolor[p] = legendcolors0[p];\
  1648.  };\
  1649. } else {\
  1650.  if( barcolor.length == 0 ){\
  1651.   for(var p = 0 ; p < l_length ; p++){\
  1652.    barcolor[p] = stroke_color;\
  1653.   };\
  1654.  };\
  1655. };\
  1656. for(var p = 0; p < l_length; p++){\
  1657.  ctx.fillStyle = barcolor[p];\
  1658.  txt = legend0[p];\
  1659.  txt_size = ctx.measureText(txt).width;\
  1660.  ctx.fillText(legend0[p],x_offset - txt_size, y_offset);\
  1661.  y_offset = parseInt(y_offset + 1.5*font_size);\
  1662. };\
  1663. ctx.restore();");
  1664. }
  1665.  
  1666. if( barchart_cnt != 0 ){
  1667. fprintf(js_include_file,"ctx.save();\
  1668. var num_barcharts = 0;\
  1669. var bar_name = eval('barchart_0');\
  1670. while( typeof(bar_name) !== 'undefined' ){\
  1671.    try{ bar_name = eval('barchart_'+num_barcharts);num_barcharts++;}catch(e){break;};\
  1672. };\
  1673. var bar_width = parseInt(0.8*x2step/(num_barcharts));\
  1674. for(var i=0 ; i< num_barcharts ; i++){\
  1675.  bar_name = eval('barchart_'+i);\
  1676.  var bar_x = new Array();\
  1677.  var bar_y = new Array();\
  1678.  var lb = bar_name.length;\
  1679.  var idx = 0;\
  1680.  var dx = parseInt(0.5*i*bar_width);\
  1681.  for( var p = 0 ; p < lb ; p = p + 3 ){\
  1682.   bar_x[idx] = x2px(bar_name[p]);\
  1683.   bar_y[idx] = y2px(bar_name[p+1]);\
  1684.   barcolor[idx] = bar_name[p+2];\
  1685.   idx++;\
  1686.  };\
  1687.  ctx.globalAlpha = fill_opacity;\
  1688.  for( var p = 0; p < idx ; p++ ){\
  1689.   ctx.beginPath();\
  1690.   ctx.strokeStyle = barcolor[p];\
  1691.   ctx.fillStyle = barcolor[p];\
  1692.   ctx.rect(bar_x[p]-0.4*x2step+dx,bar_y[p],bar_width,zero_y - bar_y[p]);\
  1693.   ctx.fill();\
  1694.   ctx.stroke();\
  1695.   ctx.closePath();\
  1696.  };\
  1697. };\
  1698. ctx.restore();");
  1699. }
  1700.  
  1701. if( linegraph_cnt != 0 ){
  1702. fprintf(js_include_file,"ctx.save();\
  1703. ctx.globalAlpha = 1.0;\
  1704. var i = 0;\
  1705. var line_name = eval('linegraph_'+i);\
  1706. while ( typeof(line_name) !== 'undefined' ){\
  1707.  ctx.strokeStyle = 'rgba('+line_name[0]+','+stroke_opacity+')';\
  1708.  ctx.lineWidth = parseInt(line_name[1]);\
  1709.  if(line_name[2] == \"1\"){\
  1710.   var d1 = parseInt(line_name[3]);\
  1711.   var d2 = parseInt(line_name[4]);\
  1712.   if(ctx.setLineDash){ ctx.setLineDash([d1,d2]); } else { ctx.mozDash = [d1,d2];};\
  1713.  } else {\
  1714.  if(ctx.setLineDash){ctx.setLineDash = null;};if(ctx.mozDash){ctx.mozDash = null;}\
  1715.  };\
  1716.  var data_x = new Array();var data_y = new Array();\
  1717.  var lb = line_name.length;var idx = 0;\
  1718.  for( var p = 5 ; p < lb ; p = p + 2 ){\
  1719.   data_x[idx] = x2px(line_name[p]);\
  1720.   data_y[idx] = y2px(line_name[p+1]);\
  1721.   idx++;\
  1722.  };\
  1723.  for( var p = 0; p < idx ; p++){\
  1724.   ctx.beginPath();\
  1725.   ctx.moveTo(data_x[p],data_y[p]);\
  1726.   ctx.lineTo(data_x[p+1],data_y[p+1]);\
  1727.   ctx.stroke();\
  1728.   ctx.closePath();\
  1729.  };\
  1730.  i++;\
  1731.  try{ line_name = eval('linegraph_'+i); }catch(e){ break; }\
  1732. };\
  1733. ctx.restore();return;");
  1734. }
  1735. fprintf(js_include_file,"};");
  1736.  
  1737. break;
  1738.  
  1739. case DRAW_PIECHART:
  1740. fprintf(js_include_file,"\n/* draw piecharts */\
  1741. if( typeof(all_fill_patterns) != 'object' ){ var all_fill_patterns = []; };\
  1742. function draw_piechart(canvas_type,x_center,y_center,radius, data_color_list,fill_opacity,legend_cnt,font_family,use_filled,use_offset){\
  1743. var obj;\
  1744. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  1745.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  1746. } else {\
  1747.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  1748. };\
  1749. var center_text = use_offset || 0;\
  1750. var ld = data_color_list.length;\
  1751. var sum = 0;\
  1752. var idx = 0;\
  1753. var font_size = parseInt(font_family.replace(/[^0-9\\.]+/g, \"\"));\
  1754. var colors = new Array();\
  1755. var data = new Array();\
  1756. for(var p = 0;p < ld; p = p + 2){\
  1757.  data[idx] = parseFloat(data_color_list[p]);\
  1758.  sum = sum + data[idx];\
  1759.  colors[idx] = data_color_list[p+1];\
  1760.  idx++;\
  1761. };\
  1762. if( use_filled > 1 ){\
  1763.  var i = 2;\
  1764.  for(var p = 0 ;  p < idx ; p++){\
  1765.   if(i > 5 ){ i = 2; };\
  1766.   var pat = create_Pattern(0,0,i,colors[p]); all_fill_patterns[p] = pat;i++;\
  1767.  };\
  1768. };\
  1769. var ctx = obj.getContext(\"2d\");\
  1770. ctx.save();\
  1771. var angle;\
  1772. var angle_end = 0;\
  1773. var offset = Math.PI / 2;\
  1774. ctx.globalAlpha = fill_opacity;\
  1775. var angles = [];\
  1776. for(var p=0; p < idx; p++){\
  1777.  ctx.beginPath();\
  1778.  ctx.moveTo(x_center,y_center);\
  1779.  angle = Math.PI * (2 * data[p] / sum);\
  1780.  ctx.arc(x_center,y_center, radius, angle_end - offset, angle_end + angle - offset, false);\
  1781.  ctx.lineTo(x_center, y_center);\
  1782.  if( use_filled > 1 ){ ctx.fillStyle = all_fill_patterns[p]; }else{ ctx.fillStyle = colors[p];};\
  1783.  ctx.fill();\
  1784.  ctx.closePath();\
  1785.  angles.push(angle_end + angle - offset);\
  1786.  angle_end  = angle_end + angle;\
  1787. };\
  1788. if(typeof(legend0) !== 'undefined'){\
  1789.  var legenda = eval(\"legend\"+legend_cnt);\
  1790.  ctx.globalAlpha = 1.0;\
  1791.  ctx.font = font_family;\
  1792.  var y_offset = font_size;\
  1793.  var x_offset = 0;\
  1794.  var txt;var txt_size;\
  1795.  for(var p = 0; p < idx; p++){\
  1796.   ctx.fillStyle = colors[p];\
  1797.   txt = legenda[p];\
  1798.   txt_size = ctx.measureText(txt).width + 2;\
  1799.   if(center_text == 4){\
  1800.    ctx.save();\
  1801.    ctx.translate(x_center, y_center);\
  1802.    ctx.rotate(angles[p]);\
  1803.    ctx.fillText(txt,radius-txt_size,0);\
  1804.    ctx.restore();\
  1805.   } else {\
  1806.    if( x_center + radius + txt_size > xsize ){ x_offset =  x_center + radius + txt_size - xsize;} else { x_offset = 0; };\
  1807.    ctx.fillText(txt,x_center + radius - x_offset, y_center - radius + y_offset);\
  1808.    y_offset = parseInt(y_offset + 1.5*font_size);\
  1809.   };\
  1810.  };\
  1811. };\
  1812. ctx.restore();\
  1813. };",canvas_root_id,canvas_root_id,canvas_root_id);
  1814. break;
  1815.  
  1816. case DRAW_JSBOXPLOT:
  1817. fprintf(js_include_file,"\n/* draw jsboxplots */\
  1818. if( typeof(all_fill_patterns) != 'object' ){ var all_fill_patterns = []; };\
  1819. function statistics(data){\
  1820. var len = data.length;\
  1821. var min = 10000000;\
  1822. var max = -10000000;\
  1823. var sum = 0;var d;\
  1824. for(var i=0;i<len;i++){\
  1825.  d = data[i];\
  1826.  if(d < min){min = d;}else{if(d > max){max = d;};};\
  1827.  sum+= parseFloat(data[i]);\
  1828. };\
  1829. var mean = parseFloat(sum/len);\
  1830. var variance = 0;\
  1831. for(var i=0;i<len;i++){\
  1832.  d = data[i];\
  1833.  variance += (d - mean)*(d - mean);\
  1834. };\
  1835. variance = parseFloat(variance / len);\
  1836. var std = Math.sqrt(variance);\
  1837. data.sort(function(a,b){return a - b;});\
  1838. var median;var Q1;var Q3;\
  1839. var half = Math.floor(0.5*len);\
  1840. var q1 = Math.floor(0.25*len);\
  1841. var q3 = Math.floor(0.75*len);\
  1842. var half = Math.floor(0.5*len);\
  1843. if(len %%2 == 1){\
  1844.  median = data[half];\
  1845.  Q1 = data[q1];\
  1846.  Q3 = data[q3];\
  1847. } else {\
  1848.  median = (data[half - 1] + data[half] )/2;\
  1849.  Q1 = (data[q1 - 1] + data[q1] )/2;\
  1850.  Q3 = (data[q3 - 1] + data[q3] )/2;\
  1851. };\
  1852. return [min,Q1,median,Q3,max];\
  1853. };");
  1854. break;
  1855.  
  1856. case DRAW_BOXPLOT:
  1857. fprintf(js_include_file,"\n/* draw boxplots */\
  1858. if( typeof(all_fill_patterns) != 'object' ){ var all_fill_patterns = []; };\
  1859. draw_boxplot = function(canvas_type,xy,hw,cxy,data,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype0,dashtype1){\
  1860. var obj;\
  1861. 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);};\
  1862. var ctx = obj.getContext(\"2d\");\
  1863. ctx.clearRect(0,0,xsize,ysize);\
  1864. ctx.save();\
  1865. ctx.lineWidth = line_width;\
  1866. ctx.strokeStyle =  \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  1867. var colors = new Array(2);\
  1868. colors[0] = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";\
  1869. colors[1] = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  1870. if( use_filled > 1 ){\
  1871.   var pat = create_Pattern(0,0,3,colors[0]);\
  1872.   all_fill_patterns[0] = pat;\
  1873.   pat = create_Pattern(0,0,4,colors[1]);\
  1874.   all_fill_patterns[1] = pat;\
  1875. };\
  1876. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{if(ctx.mozDash){ ctx.mozDash = [dashtype0,dashtype1];};};};\
  1877. var hh = 0.25*hw;\
  1878. switch(boxplot_source){\
  1879.  case 1: if( typeof(jsboxplot_data) === 'undefined'){return;};data = statistics(jsboxplot_data);break;\
  1880.  case 2: if( typeof(student_boxplot_data) === 'undefined'){return;};data = statistics(student_boxplot_data);break;\
  1881.  case 3: if( typeof(student_boxplot) === 'undefined'){return;};data = student_boxplot;break;\
  1882.  default: break;\
  1883. };\
  1884. var min,Q1,median,Q3,max;\
  1885. if(xy == 1 ){\
  1886.  min=x2px(data[0]);Q1=x2px(data[1]);median=x2px(data[2]);Q3=x2px(data[3]);max=x2px(data[4]);\
  1887.  hh = Math.abs(y2px(hh) - y2px(ystart));\
  1888.  hw = Math.abs(y2px(hw) - y2px(ystart));\
  1889.  cxy = y2px(cxy);\
  1890.  ctx.beginPath();\
  1891.  ctx.moveTo(min,cxy);\
  1892.  ctx.lineTo(Q1,cxy);\
  1893.  ctx.moveTo(Q3,cxy);\
  1894.  ctx.lineTo(max,cxy);\
  1895.  ctx.moveTo(min,cxy+hh);\
  1896.  ctx.lineTo(min,cxy-hh);\
  1897.  ctx.moveTo(max,cxy+hh);\
  1898.  ctx.lineTo(max,cxy-hh);\
  1899.  ctx.closePath();\
  1900.  ctx.stroke();\
  1901.  ctx.beginPath();\
  1902.  ctx.rect(Q1,cxy-2*hh,median-Q1,hw);\
  1903.  ctx.closePath();\
  1904.  if( use_filled != 0 ){\
  1905.   if( use_filled == 1 ) {ctx.fillStyle = colors[0]; }else{ ctx.fillStyle = all_fill_patterns[0] };\
  1906.   ctx.fill();\
  1907.  };\
  1908.  ctx.stroke();\
  1909.  ctx.beginPath();\
  1910.  ctx.rect(median,cxy-2*hh,Q3-median,hw);\
  1911.  ctx.closePath();\
  1912.  if( use_filled != 0 ){\
  1913.   if( use_filled == 1 ) {ctx.fillStyle = colors[1]; }else{ ctx.fillStyle = all_fill_patterns[1] };\
  1914.   ctx.fill();\
  1915.  };\
  1916.  ctx.stroke();\
  1917. }else{\
  1918.  min=y2px(data[0]);Q1=y2px(data[1]);median=y2px(data[2]);Q3=y2px(data[3]);max=y2px(data[4]);\
  1919.  hh = Math.abs(x2px(hh) - x2px(xstart));\
  1920.  hw = Math.abs(x2px(hw) - x2px(xstart));\
  1921.  cxy = x2px(cxy);\
  1922.  ctx.beginPath();\
  1923.  ctx.moveTo(cxy,min);\
  1924.  ctx.lineTo(cxy,Q1);\
  1925.  ctx.moveTo(cxy,Q3);\
  1926.  ctx.lineTo(cxy,max);\
  1927.  ctx.moveTo(cxy + hh,min);\
  1928.  ctx.lineTo(cxy - hh,min);\
  1929.  ctx.moveTo(cxy + hh,max);\
  1930.  ctx.lineTo(cxy - hh,max);\
  1931.  ctx.closePath;\
  1932.  ctx.stroke();\
  1933.  ctx.beginPath();\
  1934.  ctx.rect(cxy - 2*hh,Q1,hw,median - Q1);\
  1935.  ctx.closePath();\
  1936.  if( use_filled != 0 ){\
  1937.   if( use_filled == 1 ) {ctx.fillStyle = colors[0]; }else{ ctx.fillStyle = all_fill_patterns[0] };\
  1938.   ctx.fill();\
  1939.  };\
  1940.  ctx.stroke();\
  1941.  ctx.beginPath();\
  1942.  ctx.rect(cxy - 2*hh,median,hw,Q3 - median);\
  1943.  ctx.closePath();\
  1944.  if( use_filled != 0 ){\
  1945.   if( use_filled == 1 ) {ctx.fillStyle = colors[1]; }else{ ctx.fillStyle = all_fill_patterns[1] };\
  1946.   ctx.fill();\
  1947.  };\
  1948.  ctx.stroke();\
  1949. };\
  1950. ctx.restore();};",canvas_root_id,canvas_root_id,canvas_root_id);
  1951. break;
  1952.  
  1953. case DRAW_CENTERSTRING:
  1954. fprintf(js_include_file,"\n/* draw centerstring */\
  1955. var draw_centerstring = function(canvas_type,y,font_family,stroke_color,stroke_opacity,text){\
  1956. var obj;\
  1957. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  1958.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  1959. } else {\
  1960.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  1961. };\
  1962. var ctx = obj.getContext(\"2d\");\
  1963. ctx.save();\
  1964. ctx.clearRect(0,0,xsize,ysize);\
  1965. ctx.font = font_family;\
  1966. ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  1967. var stringwidth = ctx.measureText(text).width;\
  1968. var x = parseInt((xsize - stringwidth)/2);if( x < 0 ){x = 0;};\
  1969. ctx.fillText(text,x,y2px(y));\
  1970. ctx.restore();\
  1971. return;\
  1972. };",canvas_root_id,canvas_root_id,canvas_root_id);
  1973. break;
  1974.  
  1975. case DRAW_TEXTS:
  1976. fprintf(js_include_file,"\n/* draw text */\
  1977. var draw_text = function(canvas_type,x,y,font_size,font_family,stroke_color,stroke_opacity,angle2,text,use_rotate,angle,use_offset){\
  1978. var obj;\
  1979. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  1980.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  1981. } else {\
  1982.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  1983. };\
  1984. var ctx = obj.getContext(\"2d\");\
  1985. if( font_family != 'null' ){\
  1986.  ctx.font = font_family;\
  1987. } else {\
  1988.  ctx.font = font_size+'px Arial';\
  1989. };\
  1990. if( use_offset == 3 ){if(angle2 < 0 ){ y = y + 0.8*font_size; x = x + (Math.cos(angle2))*font_size; }else{y = y - 0.8*font_size; x = x + (Math.sin(angle2))*font_size;};};\
  1991. if(angle2 == 0 && angle != 0){\
  1992.  ctx.save();\
  1993.  if(use_rotate == 1 ){\
  1994.  ctx.rotate(angle*Math.PI/180);};\
  1995.  ctx.restore();\
  1996. };\
  1997. ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  1998. if(angle2 != 0){\
  1999.  ctx.save();\
  2000.  ctx.translate(x,y);\
  2001.  ctx.rotate((360-angle2)*(Math.PI / 180));\
  2002.  ctx.fillText(text,0,0);\
  2003.  ctx.restore();\
  2004. } else {\
  2005.  ctx.fillText(text,x,y);\
  2006. };\
  2007. return;\
  2008. };",canvas_root_id,canvas_root_id,canvas_root_id);
  2009. break;
  2010.  
  2011. case DRAW_INPUTS:
  2012. /* function center_input may be used for other centering...if not? integrate it in draw_static_inputs...*/
  2013. fprintf(js_include_file,"\n/* draw static input fields */\
  2014. if(typeof(input_cnt) !== 'undefined' ){var input_cnt = 0;};\
  2015. var draw_static_inputs = function(root_id,num,x,y,size,readonly,css_class,value,use_offset){\
  2016. var input = document.createElement(\"input\");\
  2017. input.setAttribute(\"id\",\"canvas_input\"+num);\
  2018. input.setAttribute(\"style\",\"text-align:center;position:absolute;left:\"+x+\"px;top:\"+y+\"px;\");\
  2019. if(css_class != \"none\"){input.setAttribute(\"class\",css_class);};\
  2020. input.setAttribute(\"size\",size);\
  2021. input.setAttribute(\"value\",value);\
  2022. input.addEventListener(\"touchstart\", function(e){this.focus();},false);\
  2023. if( readonly == 0 || wims_status == \"done\" ){ input.setAttribute(\"readonly\",\"readonly\");if( wims_status == \"done\" ){input.setAttribute(\"value\",\"\");};};\
  2024. canvas_div.appendChild(input);\
  2025. if(use_offset != 0 ){ center_input('canvas_input'+num,x,y,css_class);};\
  2026. input_cnt++;\
  2027. };\
  2028. function center_input(id,x,y,css_class){\
  2029. var inp = document.getElementById(id);\
  2030. var pos = inp.getBoundingClientRect();\
  2031. var center_x = parseInt(x - 0.5*(pos.width));\
  2032. var center_y = parseInt(y - 0.5*(pos.height));\
  2033. try{if(css_class != \"none\"){inp.setAttribute(\"class\",css_class);};inp.setAttribute(\"style\",\"text-align:center;position:absolute;left:\"+center_x+\"px;top:\"+center_y+\"px;\");}\
  2034. catch(e){console.log('error :'+e);return;};\
  2035. };");
  2036. break;
  2037.  
  2038. case DRAW_TEXTAREAS:
  2039. fprintf(js_include_file,"\n/* draw text area inputfields */\
  2040. var draw_textareas = function(root_id,num,x,y,cols,rows,readonly,style,value){\
  2041. var canvas_div = document.getElementById(\"canvas_div\"+root_id);\
  2042. var textarea = document.createElement(\"textarea\");\
  2043. textarea.setAttribute(\"id\",\"canvas_input\"+num);\
  2044. textarea.setAttribute(\"style\",\"position:absolute;left:\"+x+\"px;top:\"+y+\"px;\"+style);\
  2045. textarea.setAttribute(\"cols\",cols);\
  2046. textarea.setAttribute(\"rows\",rows);\
  2047. textarea.value = value;\
  2048. if( readonly == 0 || wims_status == \"done\" ){ textarea.setAttribute(\"readonly\",\"readonly\");if( wims_status == \"done\" ){textarea.value=\"\";};};\
  2049. canvas_div.appendChild(textarea);};");
  2050. break;
  2051.  
  2052. case DRAW_PIXELS:
  2053. fprintf(js_include_file,"\n/* draw pixel */\
  2054. var draw_setpixel = function(x,y,color,opacity,pixelsize){\
  2055. var idx = 2000+Math.ceil(1000*(Math.random()));\
  2056. var canvas = create_canvas%d(idx,xsize,ysize);\
  2057. var d = 0.5*pixelsize;\
  2058. var ctx = canvas.getContext(\"2d\");\
  2059. if(pixelsize%%2 == 1){ ctx.translate(0.5,0.5);};\
  2060. ctx.fillStyle = \"rgba(\"+color+\",\"+opacity+\")\";\
  2061. ctx.clearRect(0,0,xsize,ysize);\
  2062. for(var p=0; p<x.length;p++){\
  2063.  ctx.fillRect( x2px(x[p]) - d, y2px(y[p]) - d , pixelsize, pixelsize );\
  2064. };\
  2065. ctx.fill();ctx.stroke();\
  2066. };",canvas_root_id);
  2067. break;
  2068.  
  2069. case DRAW_CLOCK:
  2070. fprintf(js_include_file,"\n/* command clock */\
  2071. var clock_canvas = create_canvas%d(%d,xsize,ysize);\
  2072. var clock_ctx = clock_canvas.getContext(\"2d\");\
  2073. var clock = function(xc,yc,radius,H,M,S,type,interaction,h_color,m_color,s_color,bg_color,fg_color){\
  2074. clock_ctx.clearRect(xc - radius,yc - radius,2*radius,2*radius);\
  2075. clock_ctx.save();\
  2076. clock_ctx.globalAlpha = clock_bg_opacity;\
  2077. this.type = type || 0;\
  2078. this.interaction = interaction || 0;\
  2079. this.H = H;\
  2080. this.M = M;\
  2081. this.S = S;\
  2082. this.xc = xc || xsize/2;\
  2083. this.yc = yc || ysize/2;\
  2084. this.radius = radius || xsize/4;\
  2085. var font_size = parseInt(0.2*this.radius);\
  2086. this.H_color = h_color || \"black\";\
  2087. this.M_color = m_color || \"black\";\
  2088. this.S_color = s_color || \"black\";\
  2089. this.fg_color = fg_color || \"black\";\
  2090. this.bg_color = bg_color || \"white\";\
  2091. clock_ctx.translate(this.xc,this.yc);\
  2092. clock_ctx.beginPath();\
  2093. clock_ctx.arc(0,0,this.radius,0,2*Math.PI,false);\
  2094. clock_ctx.fillStyle = this.bg_color;\
  2095. clock_ctx.fill();\
  2096. clock_ctx.closePath();\
  2097. clock_ctx.beginPath();\
  2098. clock_ctx.font = font_size+\"px Arial\";\
  2099. clock_ctx.fillStyle = this.fg_color;\
  2100. clock_ctx.textAlign = \"center\";\
  2101. clock_ctx.textBaseline = 'middle';\
  2102. var angle;var x1,y1,x2,y2;\
  2103. var angle_cos;var angle_sin;\
  2104. clock_ctx.globalAlpha = clock_fg_opacity;\
  2105. switch(type){\
  2106. case 0:clock_ctx.beginPath();\
  2107. for(var p = 1; p <= 12 ; p++){\
  2108.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 12));\
  2109.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 12));\
  2110.  x1 = 0.8*angle_cos;y1 = 0.8*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  2111.  clock_ctx.moveTo(x1,y1);\
  2112.  clock_ctx.lineTo(x2,y2);\
  2113. };\
  2114. for(var p = 1; p <= 60 ; p++){\
  2115.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 60));\
  2116.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 60));\
  2117.  x1 = 0.9*angle_cos;y1 = 0.9*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  2118.  clock_ctx.moveTo(x1,y1);\
  2119.  clock_ctx.lineTo(x2,y2);\
  2120. };\
  2121. clock_ctx.closePath();\
  2122. clock_ctx.stroke();\
  2123. break;\
  2124. case 1:\
  2125. 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;\
  2126. case 2:\
  2127. 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);};\
  2128. clock_ctx.beginPath();\
  2129. for(var p = 1; p <= 12 ; p++){\
  2130.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 12));\
  2131.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 12));\
  2132.  x1 = 0.9*angle_cos;y1 = 0.9*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  2133.  clock_ctx.moveTo(x1,y1);\
  2134.  clock_ctx.lineTo(x2,y2);\
  2135. };\
  2136. for(var p = 1; p <= 60 ; p++){\
  2137.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 60));\
  2138.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 60));\
  2139.  x1 = 0.95*angle_cos;y1 = 0.95*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  2140.  clock_ctx.moveTo(x1,y1);\
  2141.  clock_ctx.lineTo(x2,y2);\
  2142. };\
  2143. clock_ctx.closePath();\
  2144. clock_ctx.stroke();\
  2145. break;\
  2146. };\
  2147. angle = (this.H - 3 + this.M/60 ) * 2 * Math.PI / 12;\
  2148. clock_ctx.rotate(angle);\
  2149. clock_ctx.beginPath();\
  2150. clock_ctx.moveTo(-3, -2);\
  2151. clock_ctx.lineTo(-3, 2);\
  2152. clock_ctx.lineTo(this.radius * 0.6, 1);\
  2153. clock_ctx.lineTo(this.radius  * 0.6, -1);\
  2154. clock_ctx.fillStyle = this.H_color;\
  2155. clock_ctx.fill();\
  2156. clock_ctx.rotate(-angle);\
  2157. angle = (this.M - 15 + this.S/60) * 2 * Math.PI / 60;\
  2158. clock_ctx.rotate(angle);\
  2159. clock_ctx.beginPath();\
  2160. clock_ctx.moveTo(-3, -2);\
  2161. clock_ctx.lineTo(-3, 2);\
  2162. clock_ctx.lineTo(this.radius  * 0.8, 1);\
  2163. clock_ctx.lineTo(this.radius  * 0.8, -1);\
  2164. clock_ctx.fillStyle = this.M_color;\
  2165. clock_ctx.fill();\
  2166. clock_ctx.rotate(-angle);\
  2167. angle = (this.S - 15) * 2 * Math.PI / 60;\
  2168. clock_ctx.rotate(angle);\
  2169. clock_ctx.beginPath();\
  2170. clock_ctx.moveTo(0,0);\
  2171. clock_ctx.lineTo(this.radius  * 0.9, 1);\
  2172. clock_ctx.lineTo(this.radius  * 0.9, -1);\
  2173. clock_ctx.strokeStyle = this.S_color;\
  2174. clock_ctx.stroke();\
  2175. clock_ctx.restore();\
  2176. };",canvas_root_id,CLOCK_CANVAS);
  2177. break;
  2178.  
  2179. case DRAW_LATTICE:
  2180. fprintf(js_include_file,"\n/* draw lattice */\
  2181. 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_filled){\
  2182. var obj;\
  2183. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  2184.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  2185. } else {\
  2186.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  2187. };\
  2188. var ctx = obj.getContext(\"2d\");\
  2189. ctx.save();\
  2190. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  2191. var color = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";\
  2192. if(use_filled > 1 ){ if(! all_fill_patterns[use_filled] ){ var pat = create_Pattern(0,0,use_filled,color); all_fill_patterns[use_filled] = pat;};ctx.fillStyle = all_fill_patterns[use_filled]; } else { ctx.fillStyle = color;};\
  2193. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  2194. var radius = line_width;\
  2195. var x = 0;\
  2196. var y = 0;\
  2197. var x_step_px = xsize/(xmax-xmin);\
  2198. var y_step_px = ysize/(ymax-ymin);\
  2199. var xv1 = dx1*x_step_px;\
  2200. var yv1 = dy1*y_step_px;\
  2201. var xv2 = dx2*x_step_px;\
  2202. var yv2 = dy2*y_step_px;\
  2203. for(var p = 0; p < n1 ;p++){\
  2204.  x = p*xv1 + x0;\
  2205.  y = p*yv1 + y0;\
  2206.  for(var c = 0; c < n2 ; c++){\
  2207.   ctx.beginPath();\
  2208.   ctx.arc(x+c*xv2,y+c*yv2,radius,0,2*Math.PI,false);\
  2209.   ctx.fill();\
  2210.   ctx.stroke();\
  2211.   ctx.closePath();\
  2212.  };\
  2213. };\
  2214. ctx.restore();\
  2215. return;\
  2216. };",canvas_root_id,canvas_root_id,canvas_root_id);
  2217. break;
  2218.  
  2219. case DRAW_XYLOGSCALE:
  2220. fprintf(js_include_file,"\n/* draw xylogscale */\
  2221. 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){\
  2222. var obj;\
  2223. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  2224.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  2225. } else {\
  2226.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  2227. };\
  2228. var ctx = obj.getContext(\"2d\");\
  2229. ctx.clearRect(0,0,xsize,ysize);\
  2230. ctx.save();\
  2231. var xmarge;var ymarge;var x_e;var y_e;var num;var corr;var xtxt;var ytxt;\
  2232. var x_min = Math.log(xmin)/Math.log(xlogbase);\
  2233. var x_max = Math.log(xmax)/Math.log(xlogbase);\
  2234. var y_min = Math.log(ymin)/Math.log(ylogbase);\
  2235. var y_max = Math.log(ymax)/Math.log(ylogbase);\
  2236. if(use_axis_numbering != -1){\
  2237.  ctx.font = font_family;\
  2238.  xmarge = ctx.measureText(ylogbase+'^'+y_max.toFixed(0)+' ').width;\
  2239.  ymarge = parseInt(1.5*font_size);\
  2240.  ctx.save();\
  2241.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\
  2242.  ctx.rect(0,0,xmarge,ysize);\
  2243.  ctx.rect(0,ysize-ymarge,xsize,ysize);\
  2244.  ctx.fill();\
  2245.  ctx.restore();\
  2246. }else{xmarge = 0;ymarge = 0;};\
  2247. if( typeof(xaxislabel) !== 'undefined' ){\
  2248.  ctx.save();\
  2249.  ctx.font = \"italic \"+font_size+\"px Arial\";\
  2250.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  2251.  corr =  ctx.measureText(xaxislabel).width;\
  2252.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\
  2253.  ctx.restore();\
  2254. };\
  2255. if( typeof(yaxislabel) !== 'undefined' ){\
  2256.  ctx.save();\
  2257.  ctx.font = \"italic \"+font_size+\"px Arial\";\
  2258.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  2259.  corr = ctx.measureText(yaxislabel).width;\
  2260.  ctx.translate(xmarge+font_size,corr+font_size);\
  2261.  ctx.rotate(-0.5*Math.PI);\
  2262.  ctx.fillText(yaxislabel,0,0);\
  2263.  ctx.restore();\
  2264. };\
  2265. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  2266. ctx.lineWidth = line_width;\
  2267. for(var p = x_min; p <= x_max ; p++){\
  2268.  num = Math.pow(xlogbase,p);\
  2269.  for(var i = 1 ; i < xlogbase ; i++){\
  2270.   x_e = x2px(i*num);\
  2271.   if( i == 1 ){\
  2272.    ctx.lineWidth = line_width;\
  2273.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  2274.    if( use_axis_numbering != -1 && p > x_min){\
  2275.      xtxt = xlogbase+'^'+p.toFixed(0);\
  2276.      corr = 0.5*(ctx.measureText(xtxt).width);\
  2277.      ctx.fillText(xtxt,x_e - corr,ysize - 4);\
  2278.    };\
  2279.   }else{\
  2280.    ctx.lineWidth = 0.2*line_width;\
  2281.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  2282.   };\
  2283.   if( x_e >= xmarge ){\
  2284.    ctx.beginPath();\
  2285.    ctx.moveTo(x_e,0);\
  2286.    ctx.lineTo(x_e,ysize - ymarge);\
  2287.    ctx.stroke();\
  2288.    ctx.closePath();\
  2289.   };\
  2290.  };\
  2291. };\
  2292. for(var p = y_min; p <= y_max ; p++){\
  2293.  num = Math.pow(ylogbase,p);\
  2294.  for(var i = 1 ; i < ylogbase ; i++){\
  2295.   y_e = y2px(i*num);\
  2296.   if( i == 1 ){\
  2297.    ctx.lineWidth = line_width;\
  2298.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  2299.    if( use_axis_numbering != -1 && p > y_min){\
  2300.     ctx.fillText(ylogbase+'^'+p.toFixed(0),0,y_e);\
  2301.    };\
  2302.   }else{\
  2303.    ctx.lineWidth = 0.2*line_width;\
  2304.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  2305.   };\
  2306.   ctx.beginPath();\
  2307.   ctx.moveTo(xmarge,y_e);\
  2308.   ctx.lineTo(xsize,y_e);\
  2309.   ctx.stroke();\
  2310.   ctx.closePath();\
  2311.  };\
  2312. };\
  2313. ctx.restore();\
  2314. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  2315. break;
  2316.  
  2317. case DRAW_XLOGSCALE:
  2318. fprintf(js_include_file,"\n/* draw xlogscale */\
  2319. 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){\
  2320. var obj;\
  2321. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  2322.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  2323. } else {\
  2324.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  2325. };\
  2326. var ctx = obj.getContext(\"2d\");\
  2327. ctx.clearRect(0,0,xsize,ysize);\
  2328. ctx.save();\
  2329. ctx.lineWidth = line_width;\
  2330. var prec = Math.log(precision)/Math.log(10);\
  2331. var x_min = Math.log(xmin)/Math.log(xlogbase);\
  2332. var x_max = Math.log(xmax)/Math.log(xlogbase);\
  2333. var y_min = 0;var y_max = ysize;var x_e;var corr;\
  2334. var xtxt;var ytxt;var num;var xmarge;var ymarge;\
  2335. if(use_axis_numbering != -1){\
  2336.  ctx.font = font_family;\
  2337.  xmarge = ctx.measureText(ymax.toFixed(prec)+' ').width;\
  2338.  ymarge = parseInt(1.5*font_size);\
  2339.  ctx.save();\
  2340.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\
  2341.  ctx.rect(0,0,xmarge,ysize);\
  2342.  ctx.rect(0,ysize-ymarge,xsize,ysize);\
  2343.  ctx.fill();\
  2344.  ctx.restore();\
  2345. }else{xmarge = 0;ymarge = 0;};\
  2346. if( typeof(xaxislabel) !== 'undefined' ){\
  2347.  ctx.save();\
  2348.  ctx.font = \"italic \"+font_size+\"px Arial\";\
  2349.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  2350.  corr =  ctx.measureText(xaxislabel).width;\
  2351.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\
  2352.  ctx.restore();\
  2353. };\
  2354. if( typeof(yaxislabel) !== 'undefined' ){\
  2355.  ctx.save();\
  2356.  ctx.font = \"italic \"+font_size+\"px Arial\";\
  2357.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  2358.  corr = ctx.measureText(yaxislabel).width;\
  2359.  ctx.translate(xmarge+font_size,corr+font_size);\
  2360.  ctx.rotate(-0.5*Math.PI);\
  2361.  ctx.fillText(yaxislabel,0,0);\
  2362.  ctx.restore();\
  2363. };\
  2364. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  2365. ctx.lineWidth = line_width;\
  2366. for(var p = x_min; p <= x_max ; p++){\
  2367.  num = Math.pow(xlogbase,p);\
  2368.  for(var i = 1 ; i < xlogbase ; i++){\
  2369.   x_e = x2px(i*num);\
  2370.   if( i == 1 ){\
  2371.     ctx.lineWidth = line_width;\
  2372.     ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  2373.    if( use_axis_numbering != -1 && p > x_min ){\
  2374.      xtxt = xlogbase+'^'+p.toFixed(0);\
  2375.      corr = 0.5*(ctx.measureText(xtxt).width);\
  2376.      ctx.fillText(xtxt,x_e - corr,ysize - 4);\
  2377.    };\
  2378.   }else{\
  2379.    ctx.lineWidth = 0.2*line_width;\
  2380.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  2381.   };\
  2382.   if( x_e >= xmarge ){\
  2383.    ctx.beginPath();\
  2384.    ctx.moveTo(x_e,0);\
  2385.    ctx.lineTo(x_e,ysize - ymarge);\
  2386.    ctx.stroke();\
  2387.    ctx.closePath();\
  2388.   };\
  2389.  };\
  2390. };\
  2391. var stepy = Math.abs(y2px(ymajor) - y2px(0));\
  2392. var minor_step = stepy / yminor;\
  2393. for(var y = 0 ; y < ysize - stepy ; y = y + stepy){\
  2394.  ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  2395.  ctx.lineWidth = line_width;\
  2396.  ctx.beginPath();\
  2397.  ctx.moveTo(xmarge,y);\
  2398.  ctx.lineTo(xsize,y);\
  2399.  ctx.stroke();\
  2400.  ctx.closePath();\
  2401.  if( use_axis_numbering != -1){\
  2402.   ytxt = (px2y(y)).toFixed(prec);\
  2403.   ctx.fillText( ytxt,0 ,y + 0.5*font_size );\
  2404.  };\
  2405.  for(var dy = 1 ; dy < yminor ; dy++){\
  2406.   ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  2407.   ctx.lineWidth = 0.2*line_width;\
  2408.   ctx.beginPath();\
  2409.   ctx.moveTo(xmarge,y+dy*minor_step);\
  2410.   ctx.lineTo(xsize,y+dy*minor_step);\
  2411.   ctx.stroke();\
  2412.   ctx.closePath();\
  2413.  };\
  2414. };\
  2415. ctx.restore();\
  2416. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  2417. break;
  2418.  
  2419. case DRAW_YLOGSCALE:
  2420. fprintf(js_include_file,"\n/* draw ylogscale */\
  2421. 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){\
  2422. var obj;\
  2423. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  2424.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  2425. } else {\
  2426.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  2427. };\
  2428. var ctx = obj.getContext(\"2d\");\
  2429. ctx.clearRect(0,0,xsize,ysize);\
  2430. ctx.save();\
  2431. ctx.lineWidth = line_width;\
  2432. var y_min = Math.log(ymin)/Math.log(ylogbase);\
  2433. var y_max = Math.log(ymax)/Math.log(ylogbase);\
  2434. var x_min = 0;var x_max = xsize;var y_s;var y_e;var num;var xmarge;var ymarge;\
  2435. if(use_axis_numbering != -1){\
  2436.  ctx.font = font_family;\
  2437.  xmarge = ctx.measureText(ylogbase+\"^\"+y_max.toFixed(0)+' ').width;\
  2438.  ymarge = 2*font_size;\
  2439.  ctx.save();\
  2440.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\
  2441.  ctx.rect(0,0,xmarge,ysize);\
  2442.  ctx.rect(0,ysize-ymarge,xsize,ysize);\
  2443.  ctx.fill();\
  2444.  ctx.restore();\
  2445. }else{xmarge = 0;ymarge = 0;};\
  2446. if( typeof(xaxislabel) !== 'undefined' ){\
  2447.  ctx.save();\
  2448.  ctx.font = \"italic \"+font_size+\"px Arial\";\
  2449.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  2450.  corr =  ctx.measureText(xaxislabel).width;\
  2451.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\
  2452.  ctx.restore();\
  2453. };\
  2454. if( typeof(yaxislabel) !== 'undefined' ){\
  2455.  ctx.save();\
  2456.  ctx.font = \"italic \"+font_size+\"px Arial\";\
  2457.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  2458.  corr = ctx.measureText(yaxislabel).width;\
  2459.  ctx.translate(xmarge+font_size,corr+font_size);\
  2460.  ctx.rotate(-0.5*Math.PI);\
  2461.  ctx.fillText(yaxislabel,0,0);\
  2462.  ctx.restore();\
  2463. };\
  2464. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  2465. ctx.lineWidth = line_width;\
  2466. for(var p = y_min; p <= y_max ; p++){\
  2467.  num = Math.pow(ylogbase,p);\
  2468.  for(var i = 1 ; i < ylogbase ; i++){\
  2469.   y_e = y2px(i*num);\
  2470.   if( i == 1 ){\
  2471.    ctx.lineWidth = line_width;\
  2472.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  2473.    if( use_axis_numbering != -1 && p > y_min){\
  2474.     ctx.fillText(ylogbase+'^'+p.toFixed(0),0,y_e);\
  2475.    };\
  2476.   }else{\
  2477.    ctx.lineWidth = 0.2*line_width;\
  2478.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  2479.   };\
  2480.   ctx.beginPath();\
  2481.   ctx.moveTo(xmarge,y_e);\
  2482.   ctx.lineTo(xsize,y_e);\
  2483.   ctx.stroke();\
  2484.   ctx.closePath();\
  2485.  };\
  2486. };\
  2487. var stepx = Math.abs(x2px(xmajor) - x2px(0));\
  2488. var minor_step = stepx / xminor;\
  2489. var prec = Math.log(precision)/Math.log(10);\
  2490. var xtxt;var corr;var flip = 0;\
  2491. for(var x = stepx ; x < xsize ; x = x + stepx){\
  2492.  ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  2493.  ctx.lineWidth = line_width;\
  2494.  ctx.beginPath();\
  2495.  ctx.moveTo(x,ysize-ymarge);\
  2496.  ctx.lineTo(x,0);\
  2497.  ctx.stroke();\
  2498.  ctx.closePath();\
  2499.  if( use_axis_numbering != -1){\
  2500.   xtxt = (px2x(x)).toFixed(prec);\
  2501.   corr = 0.5*(ctx.measureText(xtxt).width);\
  2502.   if(flip == 0 ){flip = 1;ctx.fillText( xtxt,x - corr ,ysize - 0.2*font_size );}else{\
  2503.   flip = 0;ctx.fillText( xtxt,x - corr ,ysize - 1.2*font_size );};\
  2504.  };\
  2505.  for(var dx = 1 ; dx < xminor ; dx++){\
  2506.   ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  2507.   ctx.lineWidth = 0.2*line_width;\
  2508.   ctx.beginPath();\
  2509.   ctx.moveTo(x+dx*minor_step,ysize - ymarge);\
  2510.   ctx.lineTo(x+dx*minor_step,0);\
  2511.   ctx.stroke();\
  2512.   ctx.closePath();\
  2513.  };\
  2514. };\
  2515. ctx.restore();\
  2516. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  2517. break;
  2518.  
  2519. case ADD_USER_INPUTS:
  2520. fprintf(js_include_file,"\n/* add_input_xy */\
  2521. function add_input_xy(){\
  2522. if( wims_status == \"done\" ){return;};\
  2523. var tooltip_div = document.getElementById(\"tooltip_placeholder_div%d\");\
  2524. var input_xy_div = document.createElement('div');\
  2525. input_xy_div.id = \"input_xy_div\";\
  2526. tooltip_div.appendChild(input_xy_div);",canvas_root_id);
  2527.  
  2528. if(strstr(draw_type,"polyline") != NULL || strstr(draw_type,"point") != NULL || strstr(draw_type,"cross") != NULL ){ /* ( input_x : input_y )*/
  2529. type=1;
  2530. fprintf(js_include_file,"input_xy_div.innerHTML=\"<br /><span class='%s'>(<input type='text' size='2' value='' id='userinput_x'/> : <input type='text' size='2' value='' id='userinput_y'/>)<input id='update_button' type='button' value='OK' onclick='' style='color:red;background-color:lightblue;'/><input id='delete_button' type='button' value='NOK' onclick='' style='color:blue;background-color:red;'/></span> \";",css_class);
  2531. }else{
  2532. if(strstr(draw_type,"circle") != NULL ){/* M: (input_x :input_y) R:input_r*/
  2533. type=2;
  2534. fprintf(js_include_file,"input_xy_div.innerHTML=\"<br /><span class='%s'>M:&nbsp;(<input type='text' size='2' value='' id='userinput_x'/> : <input type='text' size='2' value='' id='userinput_y'/>) &nbsp;&nbsp;R:&nbsp;<input type='text' size='2' value='' id='userinput_r'/><input id='update_button' type='button' value='OK' onclick='' style='color:red;background-color:lightblue;'/><input id='delete_button' type='button' value='NOK' onclick='' style='color:blue;background-color:red;'/></span> \";",css_class);
  2535. }else{
  2536. type=3;
  2537. if(strstr(draw_type,"segment") != NULL  ||  strstr(draw_type,"line") != NULL  ||  strstr(draw_type,"arrow") != NULL  ){  /* ( input_x1 : input_y1) --- ( input_x2 : input_y2) */
  2538. fprintf(js_include_file,"input_xy_div.innerHTML=\"<br /><span class='%s'>(<input type='text' size='2' value='' id='userinput_x1'/> : <input type='text' size='2' value='' id='userinput_y1'/>) &minus;&minus;&minus; (<input type='text' size='2' value='' id='userinput_x2'/> : <input type='text' size='2' value='' id='userinput_y2'/>)<input id='update_button' type='button' value='OK' onclick='' style='color:red;background-color:lightblue;'/><input id='delete_button' type='button' value='NOK' onclick='' style='color:blue;background-color:red;'/></span> \";",css_class);
  2539. }else{
  2540. type=4;
  2541. if(strstr(draw_type,"triang") != NULL ){ /* ( input_x1 : input_y1) --- ( input_x2 : input_y2) --- ( input_x3 : input_y3) */
  2542. fprintf(js_include_file,"input_xy_div.innerHTML=\"<br /><span class='%s'>&#8420;&nbsp;&nbsp;<input id='update_button' type='button' value='OK' onclick='' style='color:red;background-color:lightblue;'/><input id='delete_button' type='button' value='NOK' onclick='' style='color:blue;background-color:red;'/><br/>(<input type='text' size='2' value='' id='userinput_x1'/> : <input type='text' size='2' value='' id='userinput_y1'/>)<br/>(<input type='text' size='2' value='' id='userinput_x2'/> : <input type='text' size='2' value='' id='userinput_y2'/>)<br/>(<input type='text' size='2' value='' id='userinput_x3'/> : <input type='text' size='2' value='' id='userinput_y3'/>)</span> \";",css_class);
  2543. }else{
  2544. type=5;
  2545. if(strstr(draw_type,"text") != NULL ){ /*Text: input_r ( input_x1 : input_y1)  */
  2546. fprintf(js_include_file,"input_xy_div.innerHTML=\"<br /><span class='%s'>(<input type='text' size='2' value='' id='userinput_x'/>:<input type='text' size='2' value='' id='userinput_y'/>)&nbsp;<input id='update_button' type='button' value='OK' onclick='' style='color:red;background-color:lightblue;'/><input id='delete_button' type='button' value='NOK' onclick='' style='color:blue;background-color:red;'/></span> \";",css_class);
  2547. }else{canvas_error("command 'userinput' or 'userinput_xy' is not supported for your 'userdraw' type...");
  2548. }}}}}
  2549.  
  2550. fprintf(js_include_file,"\
  2551. var update_button = document.getElementById(\"update_button\");\
  2552. var delete_button = document.getElementById(\"delete_button\");\
  2553. update_button.addEventListener(\"mousedown\",function(e){update_me();redraw_userdraw();return;},false);\
  2554. delete_button.addEventListener(\"mousedown\",function(e){remove_last();return;},false);\
  2555. };add_input_xy();");
  2556.  
  2557. switch(type){
  2558.  case 1:
  2559. fprintf(js_include_file,"\n/* add_input_xy */\
  2560. function update_me(){\
  2561. var x = safe_eval(document.getElementById('userinput_x').value);\
  2562. var y = safe_eval(document.getElementById('userinput_y').value);\
  2563. userdraw_x.push(x2px(x));userdraw_y.push(y2px(y));\
  2564. return;\
  2565. };");break;
  2566.  case 2:
  2567. fprintf(js_include_file,"\n/* add_input_xy */\
  2568. function update_me(){\
  2569. var x = safe_eval(document.getElementById('userinput_x').value);\
  2570. var y = safe_eval(document.getElementById('userinput_y').value);\
  2571. var r = safe_eval(document.getElementById('userinput_r').value);\
  2572. r = scale_x_radius(r);\
  2573. userdraw_radius.push(r);userdraw_x.push(x2px(x));userdraw_y.push(y2px(y));\
  2574. return;\
  2575. };");break;
  2576.  case 3:
  2577. fprintf(js_include_file,"\n/* add_input_xy */\
  2578. function update_me(){\
  2579. var x,y;\
  2580. for(var p=1; p<3;p++){\
  2581.  x = safe_eval(document.getElementById('userinput_x'+p).value);\
  2582.  y = safe_eval(document.getElementById('userinput_y'+p).value);\
  2583.  userdraw_x.push(x2px(x));userdraw_y.push(y2px(y));\
  2584. };\
  2585. return;\
  2586. };");
  2587.  break;
  2588.  case 4:
  2589. fprintf(js_include_file,"\n/* add_input_xy */\
  2590. function update_me(){\
  2591. var x,y;\
  2592. for(var p=1; p<4;p++){\
  2593.  x = safe_eval(document.getElementById('userinput_x'+p).value);\
  2594.  y = safe_eval(document.getElementById('userinput_y'+p).value);\
  2595.  userdraw_x.push(x2px(x));userdraw_y.push(y2px(y));\
  2596. };\
  2597. return;\
  2598. };");
  2599.  break;
  2600.  case 5:
  2601.  /* a inputfield with 'id=userdraw_text_abc' is provided by command 'userdraw text,color'*/
  2602. fprintf(js_include_file,"\n/* add_input_xy */\
  2603. function update_me(){\
  2604. var x = safe_eval(document.getElementById('userinput_x').value);\
  2605. var y = safe_eval(document.getElementById('userinput_y').value);\
  2606. var txt = conv_to_unicode(document.getElementById('userdraw_text_abc').value);\
  2607. userdraw_x.push(x2px(x));userdraw_y.push(y2px(y));userdraw_text.push(txt.replace(/\\\\/g,' '));\
  2608. return;\
  2609. };");
  2610.  break;
  2611.  default: canvas_error("hmmm, I've no idea...");break;
  2612. }
  2613.  
  2614. break;
  2615.  
  2616. default:break;
  2617.    }
  2618.   }
  2619.  }
  2620.   return;
  2621. }
  2622.