Use SVN release of excanvas, hopefully this will make Flot work with IE

git-svn-id: https://flot.googlecode.com/svn/trunk@135 1e0a6537-2640-0410-bfb7-f154510ff394

NEWS.txt

@@ -69,7 +69,9 @@ Bug fixes:
   prevent it from overlapping the plot itself. This also fixes a
   problem with anti-aliasing when the width is 1 pixel (reported by
   Anthony Ettinger).
-
+- Imported SVN version of excanvas and fixed an issue with the newer
+  version. Hopefully, this will make Flot work with IE8 (nudge by
+  Fabien Menager).
 
 Flot 0.5
 --------

examples/basic.html

@@ -4,7 +4,7 @@
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
     <title>Flot Examples</title>
     <link href="layout.css" rel="stylesheet" type="text/css"></link>
-    <!--[if IE]><script language="javascript" type="text/javascript" src="../excanvas.pack.js"></script><![endif]-->
+    <!--[if IE]><script language="javascript" type="text/javascript" src="../excanvas.min.js"></script><![endif]-->
     <script language="javascript" type="text/javascript" src="../jquery.js"></script>
     <script language="javascript" type="text/javascript" src="../jquery.flot.js"></script>
  </head>

examples/dual-axis.html

@@ -4,7 +4,7 @@
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
     <title>Flot Examples</title>
     <link href="layout.css" rel="stylesheet" type="text/css"></link>
-    <!--[if IE]><script language="javascript" type="text/javascript" src="../excanvas.pack.js"></script><![endif]-->
+    <!--[if IE]><script language="javascript" type="text/javascript" src="../excanvas.min.js"></script><![endif]-->
     <script language="javascript" type="text/javascript" src="../jquery.js"></script>
     <script language="javascript" type="text/javascript" src="../jquery.flot.js"></script>
  </head>

examples/graph-types.html

@@ -4,7 +4,7 @@
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
     <title>Flot Examples</title>
     <link href="layout.css" rel="stylesheet" type="text/css"></link>
-    <!--[if IE]><script language="javascript" type="text/javascript" src="../excanvas.pack.js"></script><![endif]-->
+    <!--[if IE]><script language="javascript" type="text/javascript" src="../excanvas.min.js"></script><![endif]-->
     <script language="javascript" type="text/javascript" src="../jquery.js"></script>
     <script language="javascript" type="text/javascript" src="../jquery.flot.js"></script>
  </head>

examples/index.html

@@ -4,7 +4,7 @@
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
     <title>Flot Examples</title>
     <link href="layout.css" rel="stylesheet" type="text/css"></link>
-    <!--[if IE]><script language="javascript" type="text/javascript" src="../excanvas.pack.js"></script><![endif]-->
+    <!--[if IE]><script language="javascript" type="text/javascript" src="../excanvas.min.js"></script><![endif]-->
     <script language="javascript" type="text/javascript" src="../jquery.js"></script>
     <script language="javascript" type="text/javascript" src="../jquery.flot.js"></script>
  </head>

examples/interacting.html

@@ -4,7 +4,7 @@
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
     <title>Flot Examples</title>
     <link href="layout.css" rel="stylesheet" type="text/css"></link>
-    <!--[if IE]><script language="javascript" type="text/javascript" src="../excanvas.pack.js"></script><![endif]-->
+    <!--[if IE]><script language="javascript" type="text/javascript" src="../excanvas.min.js"></script><![endif]-->
     <script language="javascript" type="text/javascript" src="../jquery.js"></script>
     <script language="javascript" type="text/javascript" src="../jquery.flot.js"></script>
  </head>

examples/selection.html

@@ -4,7 +4,7 @@
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
     <title>Flot Examples</title>
     <link href="layout.css" rel="stylesheet" type="text/css"></link>
-    <!--[if IE]><script language="javascript" type="text/javascript" src="../excanvas.pack.js"></script><![endif]-->
+    <!--[if IE]><script language="javascript" type="text/javascript" src="../excanvas.min.js"></script><![endif]-->
     <script language="javascript" type="text/javascript" src="../jquery.js"></script>
     <script language="javascript" type="text/javascript" src="../jquery.flot.js"></script>
  </head>

examples/setting-options.html

@@ -4,7 +4,7 @@
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
     <title>Flot Examples</title>
     <link href="layout.css" rel="stylesheet" type="text/css"></link>
-    <!--[if IE]><script language="javascript" type="text/javascript" src="../excanvas.pack.js"></script><![endif]-->
+    <!--[if IE]><script language="javascript" type="text/javascript" src="../excanvas.min.js"></script><![endif]-->
     <script language="javascript" type="text/javascript" src="../jquery.js"></script>
     <script language="javascript" type="text/javascript" src="../jquery.flot.js"></script>
  </head>

examples/time.html

@@ -4,7 +4,7 @@
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
     <title>Flot Examples</title>
     <link href="layout.css" rel="stylesheet" type="text/css"></link>
-    <!--[if IE]><script language="javascript" type="text/javascript" src="../excanvas.pack.js"></script><![endif]-->
+    <!--[if IE]><script language="javascript" type="text/javascript" src="../excanvas.min.js"></script><![endif]-->
     <script language="javascript" type="text/javascript" src="../jquery.js"></script>
     <script language="javascript" type="text/javascript" src="../jquery.flot.js"></script>
  </head>

examples/tracking.html

@@ -4,7 +4,7 @@
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
     <title>Flot Examples</title>
     <link href="layout.css" rel="stylesheet" type="text/css"></link>
-    <!--[if IE]><script language="javascript" type="text/javascript" src="../excanvas.pack.js"></script><![endif]-->
+    <!--[if IE]><script language="javascript" type="text/javascript" src="../excanvas.min.js"></script><![endif]-->
     <script language="javascript" type="text/javascript" src="../jquery.js"></script>
     <script language="javascript" type="text/javascript" src="../jquery.flot.js"></script>
  </head>

examples/turning-series.html

@@ -4,7 +4,7 @@
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
     <title>Flot Examples</title>
     <link href="layout.css" rel="stylesheet" type="text/css"></link>
-    <!--[if IE]><script language="javascript" type="text/javascript" src="../excanvas.pack.js"></script><![endif]-->
+    <!--[if IE]><script language="javascript" type="text/javascript" src="../excanvas.min.js"></script><![endif]-->
     <script language="javascript" type="text/javascript" src="../jquery.js"></script>
     <script language="javascript" type="text/javascript" src="../jquery.flot.js"></script>
  </head>

examples/visitors.html

@@ -4,7 +4,7 @@
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
     <title>Flot Examples</title>
     <link href="layout.css" rel="stylesheet" type="text/css"></link>
-    <!--[if IE]><script language="javascript" type="text/javascript" src="../excanvas.pack.js"></script><![endif]-->
+    <!--[if IE]><script language="javascript" type="text/javascript" src="../excanvas.min.js"></script><![endif]-->
     <script language="javascript" type="text/javascript" src="../jquery.js"></script>
     <script language="javascript" type="text/javascript" src="../jquery.flot.js"></script>
  </head>

examples/zooming.html

@@ -4,7 +4,7 @@
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
     <title>Flot Examples</title>
     <link href="layout.css" rel="stylesheet" type="text/css"></link>
-    <!--[if IE]><script language="javascript" type="text/javascript" src="../excanvas.pack.js"></script><![endif]-->
+    <!--[if IE]><script language="javascript" type="text/javascript" src="../excanvas.min.js"></script><![endif]-->
     <script language="javascript" type="text/javascript" src="../jquery.js"></script>
     <script language="javascript" type="text/javascript" src="../jquery.flot.js"></script>
  </head>

excanvas.js

@@ -28,80 +28,101 @@
 //   (http://www.whatwg.org/specs/web-apps/current-work/#the-doctype)
 //   or use Box Sizing Behavior from WebFX
 //   (http://webfx.eae.net/dhtml/boxsizing/boxsizing.html)
+// * Non uniform scaling does not correctly scale strokes.
 // * Optimize. There is always room for speed improvements.
 
-// only add this code if we do not already have a canvas implementation
-if (!window.CanvasRenderingContext2D) {
+// Only add this code if we do not already have a canvas implementation
+if (!document.createElement('canvas').getContext) {
 
-(function () {
+(function() {
 
   // alias some functions to make (compiled) code shorter
   var m = Math;
   var mr = m.round;
   var ms = m.sin;
   var mc = m.cos;
+  var abs = m.abs;
+  var sqrt = m.sqrt;
 
   // this is used for sub pixel precision
   var Z = 10;
   var Z2 = Z / 2;
 
+  /**
+   * This funtion is assigned to the <canvas> elements as element.getContext().
+   * @this {HTMLElement}
+   * @return {CanvasRenderingContext2D_}
+   */
+  function getContext() {
+    return this.context_ ||
+        (this.context_ = new CanvasRenderingContext2D_(this));
+  }
+
+  var slice = Array.prototype.slice;
+
+  /**
+   * Binds a function to an object. The returned function will always use the
+   * passed in {@code obj} as {@code this}.
+   *
+   * Example:
+   *
+   *   g = bind(f, obj, a, b)
+   *   g(c, d) // will do f.call(obj, a, b, c, d)
+   *
+   * @param {Function} f The function to bind the object to
+   * @param {Object} obj The object that should act as this when the function
+   *     is called
+   * @param {*} var_args Rest arguments that will be used as the initial
+   *     arguments when the function is called
+   * @return {Function} A new function that has bound this
+   */
+  function bind(f, obj, var_args) {
+    var a = slice.call(arguments, 2);
+    return function() {
+      return f.apply(obj, a.concat(slice.call(arguments)));
+    };
+  }
+
   var G_vmlCanvasManager_ = {
-    init: function (opt_doc) {
-      var doc = opt_doc || document;
+    init: function(opt_doc) {
       if (/MSIE/.test(navigator.userAgent) && !window.opera) {
-        var self = this;
-        doc.attachEvent("onreadystatechange", function () {
-          self.init_(doc);
-        });
+        var doc = opt_doc || document;
+        // Create a dummy element so that IE will allow canvas elements to be
+        // recognized.
+        doc.createElement('canvas');
+        doc.attachEvent('onreadystatechange', bind(this.init_, this, doc));
       }
     },
 
-    init_: function (doc) {
-      if (doc.readyState == "complete") {
+    init_: function(doc) {
       // create xmlns
-        if (!doc.namespaces["g_vml_"]) {
-          doc.namespaces.add("g_vml_", "urn:schemas-microsoft-com:vml");
+      if (!doc.namespaces['g_vml_']) {
+        doc.namespaces.add('g_vml_', 'urn:schemas-microsoft-com:vml',
+                           '#default#VML');
+
+      }
+      if (!doc.namespaces['g_o_']) {
+        doc.namespaces.add('g_o_', 'urn:schemas-microsoft-com:office:office',
+                           '#default#VML');
       }
 
-        // setup default css
+      // Setup default CSS.  Only add one style sheet per document
+      if (!doc.styleSheets['ex_canvas_']) {
         var ss = doc.createStyleSheet();
-        ss.cssText = "canvas{display:inline-block;overflow:hidden;" +
+        ss.owningElement.id = 'ex_canvas_';
+        ss.cssText = 'canvas{display:inline-block;overflow:hidden;' +
             // default size is 300x150 in Gecko and Opera
-            "text-align:left;width:300px;height:150px}" +
-            "g_vml_\\:*{behavior:url(#default#VML)}";
+            'text-align:left;width:300px;height:150px}' +
+            'g_vml_\\:*{behavior:url(#default#VML)}' +
+            'g_o_\\:*{behavior:url(#default#VML)}';
+
+      }
 
       // find all canvas elements
-        var els = doc.getElementsByTagName("canvas");
+      var els = doc.getElementsByTagName('canvas');
       for (var i = 0; i < els.length; i++) {
-          if (!els[i].getContext) {
         this.initElement(els[i]);
       }
-        }
-      }
-    },
-
-    fixElement_: function (el) {
-      // in IE before version 5.5 we would need to add HTML: to the tag name
-      // but we do not care about IE before version 6
-      var outerHTML = el.outerHTML;
-
-      var newEl = el.ownerDocument.createElement(outerHTML);
-      // if the tag is still open IE has created the children as siblings and
-      // it has also created a tag with the name "/FOO"
-      if (outerHTML.slice(-2) != "/>") {
-        var tagName = "/" + el.tagName;
-        var ns;
-        // remove content
-        while ((ns = el.nextSibling) && ns.tagName != tagName) {
-          ns.removeNode();
-        }
-        // remove the incorrect closing tag
-        if (ns) {
-          ns.removeNode();
-        }
-      }
-      el.parentNode.replaceChild(newEl, el);
-      return newEl;
     },
 
     /**
@@ -112,14 +133,15 @@ if (!window.CanvasRenderingContext2D) {
      * @param {HTMLElement} el The canvas element to initialize.
      * @return {HTMLElement} the element that was created.
      */
-    initElement: function (el) {
-      el = this.fixElement_(el);
-      el.getContext = function () {
-        if (this.context_) {
-          return this.context_;
-        }
-        return this.context_ = new CanvasRenderingContext2D_(this);
-      };
+    initElement: function(el) {
+      if (!el.getContext) {
+
+        el.getContext = getContext;
+
+        // Remove fallback content. There is no way to hide text nodes so we
+        // just remove all childNodes. We could hide all elements and remove
+        // text nodes but who really cares about the fallback content.
+        el.innerHTML = '';
 
         // do not use inline function because that will leak memory
         el.attachEvent('onpropertychange', onPropertyChange);
@@ -129,18 +151,19 @@ if (!window.CanvasRenderingContext2D) {
         if (attrs.width && attrs.width.specified) {
           // TODO: use runtimeStyle and coordsize
           // el.getContext().setWidth_(attrs.width.nodeValue);
-        el.style.width = attrs.width.nodeValue + "px";
+          el.style.width = attrs.width.nodeValue + 'px';
         } else {
           el.width = el.clientWidth;
         }
         if (attrs.height && attrs.height.specified) {
           // TODO: use runtimeStyle and coordsize
           // el.getContext().setHeight_(attrs.height.nodeValue);
-        el.style.height = attrs.height.nodeValue + "px";
+          el.style.height = attrs.height.nodeValue + 'px';
         } else {
           el.height = el.clientHeight;
         }
         //el.getContext().setCoordsize_()
+      }
       return el;
     }
   };
@@ -150,11 +173,11 @@ if (!window.CanvasRenderingContext2D) {
 
     switch (e.propertyName) {
       case 'width':
-        el.style.width = el.attributes.width.nodeValue + "px";
+        el.style.width = el.attributes.width.nodeValue + 'px';
         el.getContext().clearRect();
         break;
       case 'height':
-        el.style.height = el.attributes.height.nodeValue + "px";
+        el.style.height = el.attributes.height.nodeValue + 'px';
         el.getContext().clearRect();
         break;
     }
@@ -214,43 +237,45 @@ if (!window.CanvasRenderingContext2D) {
     o2.shadowOffsetX = o1.shadowOffsetX;
     o2.shadowOffsetY = o1.shadowOffsetY;
     o2.strokeStyle   = o1.strokeStyle;
+    o2.globalAlpha   = o1.globalAlpha;
     o2.arcScaleX_    = o1.arcScaleX_;
     o2.arcScaleY_    = o1.arcScaleY_;
+    o2.lineScale_    = o1.lineScale_;
   }
 
   function processStyle(styleString) {
     var str, alpha = 1;
 
     styleString = String(styleString);
-    if (styleString.substring(0, 3) == "rgb") {
-      var start = styleString.indexOf("(", 3);
-      var end = styleString.indexOf(")", start + 1);
-      var guts = styleString.substring(start + 1, end).split(",");
+    if (styleString.substring(0, 3) == 'rgb') {
+      var start = styleString.indexOf('(', 3);
+      var end = styleString.indexOf(')', start + 1);
+      var guts = styleString.substring(start + 1, end).split(',');
 
-      str = "#";
+      str = '#';
       for (var i = 0; i < 3; i++) {
         str += dec2hex[Number(guts[i])];
       }
 
-      if ((guts.length == 4) && (styleString.substr(3, 1) == "a")) {
+      if (guts.length == 4 && styleString.substr(3, 1) == 'a') {
         alpha = guts[3];
       }
     } else {
       str = styleString;
     }
 
-    return [str, alpha];
+    return {color: str, alpha: alpha};
   }
 
   function processLineCap(lineCap) {
     switch (lineCap) {
-      case "butt":
-        return "flat";
-      case "round":
-        return "round";
-      case "square":
+      case 'butt':
+        return 'flat';
+      case 'round':
+        return 'round';
+      case 'square':
       default:
-        return "square";
+        return 'square';
     }
   }
 
@@ -268,12 +293,12 @@ if (!window.CanvasRenderingContext2D) {
     this.currentPath_ = [];
 
     // Canvas context properties
-    this.strokeStyle = "#000";
-    this.fillStyle = "#000";
+    this.strokeStyle = '#000';
+    this.fillStyle = '#000';
 
     this.lineWidth = 1;
-    this.lineJoin = "miter";
-    this.lineCap = "butt";
+    this.lineJoin = 'miter';
+    this.lineCap = 'butt';
     this.miterLimit = Z * 1;
     this.globalAlpha = 1;
     this.canvas = surfaceElement;
@@ -288,67 +313,88 @@ if (!window.CanvasRenderingContext2D) {
     this.element_ = el;
     this.arcScaleX_ = 1;
     this.arcScaleY_ = 1;
+    this.lineScale_ = 1;
   }
 
   var contextPrototype = CanvasRenderingContext2D_.prototype;
   contextPrototype.clearRect = function() {
-    this.element_.innerHTML = "";
-    this.currentPath_ = [];
+    this.element_.innerHTML = '';
   };
 
   contextPrototype.beginPath = function() {
     // TODO: Branch current matrix so that save/restore has no effect
     //       as per safari docs.
-
     this.currentPath_ = [];
   };
 
   contextPrototype.moveTo = function(aX, aY) {
-    this.currentPath_.push({type: "moveTo", x: aX, y: aY});
-    this.currentX_ = aX;
-    this.currentY_ = aY;
+    var p = this.getCoords_(aX, aY);
+    this.currentPath_.push({type: 'moveTo', x: p.x, y: p.y});
+    this.currentX_ = p.x;
+    this.currentY_ = p.y;
   };
 
   contextPrototype.lineTo = function(aX, aY) {
-    this.currentPath_.push({type: "lineTo", x: aX, y: aY});
-    this.currentX_ = aX;
-    this.currentY_ = aY;
+    var p = this.getCoords_(aX, aY);
+    this.currentPath_.push({type: 'lineTo', x: p.x, y: p.y});
+
+    this.currentX_ = p.x;
+    this.currentY_ = p.y;
   };
 
   contextPrototype.bezierCurveTo = function(aCP1x, aCP1y,
                                             aCP2x, aCP2y,
                                             aX, aY) {
-    this.currentPath_.push({type: "bezierCurveTo",
-                           cp1x: aCP1x,
-                           cp1y: aCP1y,
-                           cp2x: aCP2x,
-                           cp2y: aCP2y,
-                           x: aX,
-                           y: aY});
-    this.currentX_ = aX;
-    this.currentY_ = aY;
+    var p = this.getCoords_(aX, aY);
+    var cp1 = this.getCoords_(aCP1x, aCP1y);
+    var cp2 = this.getCoords_(aCP2x, aCP2y);
+    bezierCurveTo(this, cp1, cp2, p);
   };
 
+  // Helper function that takes the already fixed cordinates.
+  function bezierCurveTo(self, cp1, cp2, p) {
+    self.currentPath_.push({
+      type: 'bezierCurveTo',
+      cp1x: cp1.x,
+      cp1y: cp1.y,
+      cp2x: cp2.x,
+      cp2y: cp2.y,
+      x: p.x,
+      y: p.y
+    });
+    self.currentX_ = p.x;
+    self.currentY_ = p.y;
+  }
+
   contextPrototype.quadraticCurveTo = function(aCPx, aCPy, aX, aY) {
     // the following is lifted almost directly from
     // http://developer.mozilla.org/en/docs/Canvas_tutorial:Drawing_shapes
-    var cp1x = this.currentX_ + 2.0 / 3.0 * (aCPx - this.currentX_);
-    var cp1y = this.currentY_ + 2.0 / 3.0 * (aCPy - this.currentY_);
-    var cp2x = cp1x + (aX - this.currentX_) / 3.0;
-    var cp2y = cp1y + (aY - this.currentY_) / 3.0;
-    this.bezierCurveTo(cp1x, cp1y, cp2x, cp2y, aX, aY);
+
+    var cp = this.getCoords_(aCPx, aCPy);
+    var p = this.getCoords_(aX, aY);
+
+    var cp1 = {
+      x: this.currentX_ + 2.0 / 3.0 * (cp.x - this.currentX_),
+      y: this.currentY_ + 2.0 / 3.0 * (cp.y - this.currentY_)
+    };
+    var cp2 = {
+      x: cp1.x + (p.x - this.currentX_) / 3.0,
+      y: cp1.y + (p.y - this.currentY_) / 3.0
+    };
+
+    bezierCurveTo(this, cp1, cp2, p);
   };
 
   contextPrototype.arc = function(aX, aY, aRadius,
                                   aStartAngle, aEndAngle, aClockwise) {
     aRadius *= Z;
-    var arcType = aClockwise ? "at" : "wa";
+    var arcType = aClockwise ? 'at' : 'wa';
 
-    var xStart = aX + (mc(aStartAngle) * aRadius) - Z2;
-    var yStart = aY + (ms(aStartAngle) * aRadius) - Z2;
+    var xStart = aX + mc(aStartAngle) * aRadius - Z2;
+    var yStart = aY + ms(aStartAngle) * aRadius - Z2;
 
-    var xEnd = aX + (mc(aEndAngle) * aRadius) - Z2;
-    var yEnd = aY + (ms(aEndAngle) * aRadius) - Z2;
+    var xEnd = aX + mc(aEndAngle) * aRadius - Z2;
+    var yEnd = aY + ms(aEndAngle) * aRadius - Z2;
 
     // IE won't render arches drawn counter clockwise if xStart == xEnd.
     if (xStart == xEnd && !aClockwise) {
@@ -356,14 +402,18 @@ if (!window.CanvasRenderingContext2D) {
                        // that can be represented in binary
     }
 
+    var p = this.getCoords_(aX, aY);
+    var pStart = this.getCoords_(xStart, yStart);
+    var pEnd = this.getCoords_(xEnd, yEnd);
+
     this.currentPath_.push({type: arcType,
-                           x: aX,
-                           y: aY,
+                           x: p.x,
+                           y: p.y,
                            radius: aRadius,
-                           xStart: xStart,
-                           yStart: yStart,
-                           xEnd: xEnd,
-                           yEnd: yEnd});
+                           xStart: pStart.x,
+                           yStart: pStart.y,
+                           xEnd: pEnd.x,
+                           yEnd: pEnd.y});
 
   };
 
@@ -376,44 +426,55 @@ if (!window.CanvasRenderingContext2D) {
   };
 
   contextPrototype.strokeRect = function(aX, aY, aWidth, aHeight) {
-    // Will destroy any existing path (same as FF behaviour)
+    var oldPath = this.currentPath_;
     this.beginPath();
+
     this.moveTo(aX, aY);
     this.lineTo(aX + aWidth, aY);
     this.lineTo(aX + aWidth, aY + aHeight);
     this.lineTo(aX, aY + aHeight);
     this.closePath();
     this.stroke();
+
+    this.currentPath_ = oldPath;
   };
 
   contextPrototype.fillRect = function(aX, aY, aWidth, aHeight) {
-    // Will destroy any existing path (same as FF behaviour)
+    var oldPath = this.currentPath_;
     this.beginPath();
+
     this.moveTo(aX, aY);
     this.lineTo(aX + aWidth, aY);
     this.lineTo(aX + aWidth, aY + aHeight);
     this.lineTo(aX, aY + aHeight);
     this.closePath();
     this.fill();
+
+    this.currentPath_ = oldPath;
   };
 
   contextPrototype.createLinearGradient = function(aX0, aY0, aX1, aY1) {
-    var gradient = new CanvasGradient_("gradient");
+    var gradient = new CanvasGradient_('gradient');
+    gradient.x0_ = aX0;
+    gradient.y0_ = aY0;
+    gradient.x1_ = aX1;
+    gradient.y1_ = aY1;
     return gradient;
   };
 
-  contextPrototype.createRadialGradient = function(aX0, aY0,
-                                                   aR0, aX1,
-                                                   aY1, aR1) {
-    var gradient = new CanvasGradient_("gradientradial");
-    gradient.radius1_ = aR0;
-    gradient.radius2_ = aR1;
-    gradient.focus_.x = aX0;
-    gradient.focus_.y = aY0;
+  contextPrototype.createRadialGradient = function(aX0, aY0, aR0,
+                                                   aX1, aY1, aR1) {
+    var gradient = new CanvasGradient_('gradientradial');
+    gradient.x0_ = aX0;
+    gradient.y0_ = aY0;
+    gradient.r0_ = aR0;
+    gradient.x1_ = aX1;
+    gradient.y1_ = aY1;
+    gradient.r1_ = aR1;
     return gradient;
   };
 
-  contextPrototype.drawImage = function (image, var_args) {
+  contextPrototype.drawImage = function(image, var_args) {
     var dx, dy, dw, dh, sx, sy, sw, sh;
 
     // to find the original width we overide the width and height
@@ -454,7 +515,7 @@ if (!window.CanvasRenderingContext2D) {
       dw = arguments[7];
       dh = arguments[8];
     } else {
-      throw "Invalid number of arguments";
+      throw Error('Invalid number of arguments');
     }
 
     var d = this.getCoords_(dx, dy);
@@ -471,7 +532,7 @@ if (!window.CanvasRenderingContext2D) {
     vmlStr.push(' <g_vml_:group',
                 ' coordsize="', Z * W, ',', Z * H, '"',
                 ' coordorigin="0,0"' ,
-                ' style="width:', W, ';height:', H, ';position:absolute;');
+                ' style="width:', W, 'px;height:', H, 'px;position:absolute;');
 
     // If filters are necessary (rotation exists), create them
     // filters are bog-slow, so only create them if abbsolutely necessary
@@ -482,12 +543,12 @@ if (!window.CanvasRenderingContext2D) {
       var filter = [];
 
       // Note the 12/21 reversal
-      filter.push("M11='", this.m_[0][0], "',",
-                  "M12='", this.m_[1][0], "',",
-                  "M21='", this.m_[0][1], "',",
-                  "M22='", this.m_[1][1], "',",
-                  "Dx='", mr(d.x / Z), "',",
-                  "Dy='", mr(d.y / Z), "'");
+      filter.push('M11=', this.m_[0][0], ',',
+                  'M12=', this.m_[1][0], ',',
+                  'M21=', this.m_[0][1], ',',
+                  'M22=', this.m_[1][1], ',',
+                  'Dx=', mr(d.x / Z), ',',
+                  'Dy=', mr(d.y / Z), '');
 
       // Bounding box calculation (need to minimize displayed area so that
       // filters don't waste time on unused pixels.
@@ -496,20 +557,20 @@ if (!window.CanvasRenderingContext2D) {
       var c3 = this.getCoords_(dx, dy + dh);
       var c4 = this.getCoords_(dx + dw, dy + dh);
 
-      max.x = Math.max(max.x, c2.x, c3.x, c4.x);
-      max.y = Math.max(max.y, c2.y, c3.y, c4.y);
+      max.x = m.max(max.x, c2.x, c3.x, c4.x);
+      max.y = m.max(max.y, c2.y, c3.y, c4.y);
 
-      vmlStr.push("padding:0 ", mr(max.x / Z), "px ", mr(max.y / Z),
-                  "px 0;filter:progid:DXImageTransform.Microsoft.Matrix(",
-                  filter.join(""), ", sizingmethod='clip');");
+      vmlStr.push('padding:0 ', mr(max.x / Z), 'px ', mr(max.y / Z),
+                  'px 0;filter:progid:DXImageTransform.Microsoft.Matrix(',
+                  filter.join(''), ", sizingmethod='clip');")
     } else {
-      vmlStr.push("top:", mr(d.y / Z), "px;left:", mr(d.x / Z), "px;");
+      vmlStr.push('top:', mr(d.y / Z), 'px;left:', mr(d.x / Z), 'px;');
     }
 
     vmlStr.push(' ">' ,
                 '<g_vml_:image src="', image.src, '"',
-                ' style="width:', Z * dw, ';',
-                ' height:', Z * dh, ';"',
+                ' style="width:', Z * dw, 'px;',
+                ' height:', Z * dh, 'px;"',
                 ' cropleft="', sx / w, '"',
                 ' croptop="', sy / h, '"',
                 ' cropright="', (w - sx - sw) / w, '"',
@@ -517,28 +578,25 @@ if (!window.CanvasRenderingContext2D) {
                 ' />',
                 '</g_vml_:group>');
 
-    this.element_.insertAdjacentHTML("BeforeEnd",
-                                    vmlStr.join(""));
+    this.element_.insertAdjacentHTML('BeforeEnd',
+                                    vmlStr.join(''));
   };
 
   contextPrototype.stroke = function(aFill) {
     var lineStr = [];
     var lineOpen = false;
     var a = processStyle(aFill ? this.fillStyle : this.strokeStyle);
-    var color = a[0];
-    var opacity = a[1] * this.globalAlpha;
+    var color = a.color;
+    var opacity = a.alpha * this.globalAlpha;
 
     var W = 10;
     var H = 10;
 
     lineStr.push('<g_vml_:shape',
-                 ' fillcolor="', color, '"',
-                 ' filled="', Boolean(aFill), '"',
-                 ' style="position:absolute;width:', W, ';height:', H, ';"',
+                 ' filled="', !!aFill, '"',
+                 ' style="position:absolute;width:', W, 'px;height:', H, 'px;"',
                  ' coordorigin="0 0" coordsize="', Z * W, ' ', Z * H, '"',
                  ' stroked="', !aFill, '"',
-                 ' strokeweight="', this.lineWidth, '"',
-                 ' strokecolor="', color, '"',
                  ' path="');
 
     var newSeq = false;
@@ -547,37 +605,36 @@ if (!window.CanvasRenderingContext2D) {
 
     for (var i = 0; i < this.currentPath_.length; i++) {
       var p = this.currentPath_[i];
+      var c;
 
-      if (p.type == "moveTo") {
-        lineStr.push(" m ");
-        var c = this.getCoords_(p.x, p.y);
-        lineStr.push(mr(c.x), ",", mr(c.y));
-      } else if (p.type == "lineTo") {
-        lineStr.push(" l ");
-        var c = this.getCoords_(p.x, p.y);
-        lineStr.push(mr(c.x), ",", mr(c.y));
-      } else if (p.type == "close") {
-        lineStr.push(" x ");
-      } else if (p.type == "bezierCurveTo") {
-        lineStr.push(" c ");
-        var c = this.getCoords_(p.x, p.y);
-        var c1 = this.getCoords_(p.cp1x, p.cp1y);
-        var c2 = this.getCoords_(p.cp2x, p.cp2y);
-        lineStr.push(mr(c1.x), ",", mr(c1.y), ",",
-                     mr(c2.x), ",", mr(c2.y), ",",
-                     mr(c.x), ",", mr(c.y));
-      } else if (p.type == "at" || p.type == "wa") {
-        lineStr.push(" ", p.type, " ");
-        var c  = this.getCoords_(p.x, p.y);
-        var cStart = this.getCoords_(p.xStart, p.yStart);
-        var cEnd = this.getCoords_(p.xEnd, p.yEnd);
-
-        lineStr.push(mr(c.x - this.arcScaleX_ * p.radius), ",",
-                     mr(c.y - this.arcScaleY_ * p.radius), " ",
-                     mr(c.x + this.arcScaleX_ * p.radius), ",",
-                     mr(c.y + this.arcScaleY_ * p.radius), " ",
-                     mr(cStart.x), ",", mr(cStart.y), " ",
-                     mr(cEnd.x), ",", mr(cEnd.y));
+      switch (p.type) {
+        case 'moveTo':
+          c = p;
+          lineStr.push(' m ', mr(p.x), ',', mr(p.y));
+          break;
+        case 'lineTo':
+          lineStr.push(' l ', mr(p.x), ',', mr(p.y));
+          break;
+        case 'close':
+          lineStr.push(' x ');
+          p = null;
+          break;
+        case 'bezierCurveTo':
+          lineStr.push(' c ',
+                       mr(p.cp1x), ',', mr(p.cp1y), ',',
+                       mr(p.cp2x), ',', mr(p.cp2y), ',',
+                       mr(p.x), ',', mr(p.y));
+          break;
+        case 'at':
+        case 'wa':
+          lineStr.push(' ', p.type, ' ',
+                       mr(p.x - this.arcScaleX_ * p.radius), ',',
+                       mr(p.y - this.arcScaleY_ * p.radius), ' ',
+                       mr(p.x + this.arcScaleX_ * p.radius), ',',
+                       mr(p.y + this.arcScaleY_ * p.radius), ' ',
+                       mr(p.xStart), ',', mr(p.yStart), ' ',
+                       mr(p.xEnd), ',', mr(p.yEnd));
+          break;
       }
 
 
@@ -586,114 +643,144 @@ if (!window.CanvasRenderingContext2D) {
 
       // Figure out dimensions so we can do gradient fills
       // properly
-      if(c) {
-        if (min.x == null || c.x < min.x) {
-          min.x = c.x;
+      if (p) {
+        if (min.x == null || p.x < min.x) {
+          min.x = p.x;
         }
-        if (max.x == null || c.x > max.x) {
-          max.x = c.x;
+        if (max.x == null || p.x > max.x) {
+          max.x = p.x;
         }
-        if (min.y == null || c.y < min.y) {
-          min.y = c.y;
+        if (min.y == null || p.y < min.y) {
+          min.y = p.y;
         }
-        if (max.y == null || c.y > max.y) {
-          max.y = c.y;
+        if (max.y == null || p.y > max.y) {
+          max.y = p.y;
         }
       }
     }
     lineStr.push(' ">');
 
-    if (typeof this.fillStyle == "object") {
-      var focus = {x: "50%", y: "50%"};
-      var width = (max.x - min.x);
-      var height = (max.y - min.y);
-      var dimension = (width > height) ? width : height;
+    if (!aFill) {
+      var lineWidth = this.lineScale_ * this.lineWidth;
 
-      focus.x = mr((this.fillStyle.focus_.x / width) * 100 + 50) + "%";
-      focus.y = mr((this.fillStyle.focus_.y / height) * 100 + 50) + "%";
-
-      var colors = [];
-
-      // inside radius (%)
-      if (this.fillStyle.type_ == "gradientradial") {
-        var inside = (this.fillStyle.radius1_ / dimension * 100);
+      // VML cannot correctly render a line if the width is less than 1px.
+      // In that case, we dilute the color to make the line look thinner.
+      if (lineWidth < 1) {
+        opacity *= lineWidth;
+      }
 
-        // percentage that outside radius exceeds inside radius
-        var expansion = (this.fillStyle.radius2_ / dimension * 100) - inside;
-      } else {
-        var inside = 0;
-        var expansion = 100;
+      lineStr.push(
+        '<g_vml_:stroke',
+        ' opacity="', opacity, '"',
+        ' joinstyle="', this.lineJoin, '"',
+        ' miterlimit="', this.miterLimit, '"',
+        ' endcap="', processLineCap(this.lineCap), '"',
+        ' weight="', lineWidth, 'px"',
+        ' color="', color, '" />'
+      );
+    } else if (typeof this.fillStyle == 'object') {
+      var fillStyle = this.fillStyle;
+      var angle = 0;
+      var focus = {x: 0, y: 0};
+
+      // additional offset
+      var shift = 0;
+      // scale factor for offset
+      var expansion = 1;
+
+      if (fillStyle.type_ == 'gradient') {
+        var x0 = fillStyle.x0_ / this.arcScaleX_;
+        var y0 = fillStyle.y0_ / this.arcScaleY_;
+        var x1 = fillStyle.x1_ / this.arcScaleX_;
+        var y1 = fillStyle.y1_ / this.arcScaleY_;
+        var p0 = this.getCoords_(x0, y0);
+        var p1 = this.getCoords_(x1, y1);
+        var dx = p1.x - p0.x;
+        var dy = p1.y - p0.y;
+        angle = Math.atan2(dx, dy) * 180 / Math.PI;
+
+        // The angle should be a non-negative number.
+        if (angle < 0) {
+          angle += 360;
+        }
+
+        // Very small angles produce an unexpected result because they are
+        // converted to a scientific notation string.
+        if (angle < 1e-6) {
+          angle = 0;
         }
+      } else {
+        var p0 = this.getCoords_(fillStyle.x0_, fillStyle.y0_);
+        var width  = max.x - min.x;
+        var height = max.y - min.y;
+        focus = {
+          x: (p0.x - min.x) / width,
+          y: (p0.y - min.y) / height
+        };
 
-      var insidecolor = {offset: null, color: null};
-      var outsidecolor = {offset: null, color: null};
+        width  /= this.arcScaleX_ * Z;
+        height /= this.arcScaleY_ * Z;
+        var dimension = m.max(width, height);
+        shift = 2 * fillStyle.r0_ / dimension;
+        expansion = 2 * fillStyle.r1_ / dimension - shift;
+      }
 
-      // We need to sort 'colors' by percentage, from 0 > 100 otherwise ie
-      // won't interpret it correctly
-      this.fillStyle.colors_.sort(function (cs1, cs2) {
+      // We need to sort the color stops in ascending order by offset,
+      // otherwise IE won't interpret it correctly.
+      var stops = fillStyle.colors_;
+      stops.sort(function(cs1, cs2) {
         return cs1.offset - cs2.offset;
       });
 
-      for (var i = 0; i < this.fillStyle.colors_.length; i++) {
-        var fs = this.fillStyle.colors_[i];
-
-        colors.push( (fs.offset * expansion) + inside, "% ", fs.color, ",");
-
-        if (fs.offset > insidecolor.offset || insidecolor.offset == null) {
-          insidecolor.offset = fs.offset;
-          insidecolor.color = fs.color;
-        }
+      var length = stops.length;
+      var color1 = stops[0].color;
+      var color2 = stops[length - 1].color;
+      var opacity1 = stops[0].alpha * this.globalAlpha;
+      var opacity2 = stops[length - 1].alpha * this.globalAlpha;
 
-        if (fs.offset < outsidecolor.offset || outsidecolor.offset == null) {
-          outsidecolor.offset = fs.offset;
-          outsidecolor.color = fs.color;
-        }
-      }
-      colors.pop();
-
-      lineStr.push('<g_vml_:fill',
-                   ' color="', outsidecolor.color, '"',
-                   ' color2="', insidecolor.color, '"',
-                   ' type="', this.fillStyle.type_, '"',
-                   ' focusposition="', focus.x, ', ', focus.y, '"',
-                   ' colors="', colors.join(""), '"',
-                   ' opacity="', opacity, '" />');
-    } else if (aFill) {
-      lineStr.push('<g_vml_:fill color="', color, '" opacity="', opacity, '" />');
+      var colors = [];
+      for (var i = 0; i < length; i++) {
+        var stop = stops[i];
+        colors.push(stop.offset * expansion + shift + ' ' + stop.color);
+      }
+
+      // When colors attribute is used, the meanings of opacity and o:opacity2
+      // are reversed.
+      lineStr.push('<g_vml_:fill type="', fillStyle.type_, '"',
+                   ' method="none" focus="100%"',
+                   ' color="', color1, '"',
+                   ' color2="', color2, '"',
+                   ' colors="', colors.join(','), '"',
+                   ' opacity="', opacity2, '"',
+                   ' g_o_:opacity2="', opacity1, '"',
+                   ' angle="', angle, '"',
+                   ' focusposition="', focus.x, ',', focus.y, '" />');
     } else {
-      lineStr.push(
-        '<g_vml_:stroke',
-        ' opacity="', opacity,'"',
-        ' joinstyle="', this.lineJoin, '"',
-        ' miterlimit="', this.miterLimit, '"',
-        ' endcap="', processLineCap(this.lineCap) ,'"',
-        ' weight="', this.lineWidth, 'px"',
-        ' color="', color,'" />'
-      );
+      lineStr.push('<g_vml_:fill color="', color, '" opacity="', opacity,
+                   '" />');
     }
 
-    lineStr.push("</g_vml_:shape>");
+    lineStr.push('</g_vml_:shape>');
 
-    this.element_.insertAdjacentHTML("beforeEnd", lineStr.join(""));
-
-    //this.currentPath_ = [];
+    this.element_.insertAdjacentHTML('beforeEnd', lineStr.join(''));
   };
 
   contextPrototype.fill = function() {
     this.stroke(true);
-  };
+  }
 
   contextPrototype.closePath = function() {
-    this.currentPath_.push({type: "close"});
+    this.currentPath_.push({type: 'close'});
   };
 
   /**
    * @private
    */
   contextPrototype.getCoords_ = function(aX, aY) {
+    var m = this.m_;
     return {
-      x: Z * (aX * this.m_[0][0] + aY * this.m_[1][0] + this.m_[2][0]) - Z2,
-      y: Z * (aX * this.m_[0][1] + aY * this.m_[1][1] + this.m_[2][1]) - Z2
+      x: Z * (aX * m[0][0] + aY * m[1][0] + m[2][0]) - Z2,
+      y: Z * (aX * m[0][1] + aY * m[1][1] + m[2][1]) - Z2
     }
   };
 
@@ -742,7 +829,14 @@ if (!window.CanvasRenderingContext2D) {
       [0,  0,  1]
     ];
 
-    this.m_ = matrixMultiply(m1, this.m_);
+    var m = this.m_ = matrixMultiply(m1, this.m_);
+
+    // Get the line scale.
+    // Determinant of this.m_ means how much the area is enlarged by the
+    // transformation. So its square root can be used as a scale factor
+    // for width.
+    var det = m[0][0] * m[1][1] - m[0][1] * m[1][0];
+    this.lineScale_ = sqrt(abs(det));
   };
 
   /******** STUBS ********/
@@ -761,15 +855,20 @@ if (!window.CanvasRenderingContext2D) {
   // Gradient / Pattern Stubs
   function CanvasGradient_(aType) {
     this.type_ = aType;
-    this.radius1_ = 0;
-    this.radius2_ = 0;
+    this.x0_ = 0;
+    this.y0_ = 0;
+    this.r0_ = 0;
+    this.x1_ = 0;
+    this.y1_ = 0;
+    this.r1_ = 0;
     this.colors_ = [];
-    this.focus_ = {x: 0, y: 0};
   }
 
   CanvasGradient_.prototype.addColorStop = function(aOffset, aColor) {
     aColor = processStyle(aColor);
-    this.colors_.push({offset: 1-aOffset, color: aColor});
+    this.colors_.push({offset: aOffset,
+                       color: aColor.color,
+                       alpha: aColor.alpha});
   };
 
   function CanvasPattern_() {}

excanvas.min.js

+if(!document.createElement("canvas").getContext){(function(){var R=Math;var S=R.round;var O=R.sin;var a=R.cos;var J=R.abs;var Y=R.sqrt;var A=10;var K=A/2;function G(){return this.context_||(this.context_=new M(this))}var Q=Array.prototype.slice;function b(c,d,e){var Z=Q.call(arguments,2);return function(){return c.apply(d,Z.concat(Q.call(arguments)))}}var H={init:function(Z){if(/MSIE/.test(navigator.userAgent)&&!window.opera){var c=Z||document;c.createElement("canvas");c.attachEvent("onreadystatechange",b(this.init_,this,c))}},init_:function(e){if(!e.namespaces.g_vml_){e.namespaces.add("g_vml_","urn:schemas-microsoft-com:vml","#default#VML")}if(!e.namespaces.g_o_){e.namespaces.add("g_o_","urn:schemas-microsoft-com:office:office","#default#VML")}if(!e.styleSheets.ex_canvas_){var d=e.createStyleSheet();d.owningElement.id="ex_canvas_";d.cssText="canvas{display:inline-block;overflow:hidden;text-align:left;width:300px;height:150px}g_vml_\\:*{behavior:url(#default#VML)}g_o_\\:*{behavior:url(#default#VML)}"}var c=e.getElementsByTagName("canvas");for(var Z=0;Z<c.length;Z++){this.initElement(c[Z])}},initElement:function(c){if(!c.getContext){c.getContext=G;c.innerHTML="";c.attachEvent("onpropertychange",X);c.attachEvent("onresize",B);var Z=c.attributes;if(Z.width&&Z.width.specified){c.style.width=Z.width.nodeValue+"px"}else{c.width=c.clientWidth}if(Z.height&&Z.height.specified){c.style.height=Z.height.nodeValue+"px"}else{c.height=c.clientHeight}}return c}};function X(c){var Z=c.srcElement;switch(c.propertyName){case"width":Z.style.width=Z.attributes.width.nodeValue+"px";Z.getContext().clearRect();break;case"height":Z.style.height=Z.attributes.height.nodeValue+"px";Z.getContext().clearRect();break}}function B(c){var Z=c.srcElement;if(Z.firstChild){Z.firstChild.style.width=Z.clientWidth+"px";Z.firstChild.style.height=Z.clientHeight+"px"}}H.init();var E=[];for(var V=0;V<16;V++){for(var U=0;U<16;U++){E[V*16+U]=V.toString(16)+U.toString(16)}}function N(){return[[1,0,0],[0,1,0],[0,0,1]]}function D(e,d){var c=N();for(var Z=0;Z<3;Z++){for(var h=0;h<3;h++){var f=0;for(var g=0;g<3;g++){f+=e[Z][g]*d[g][h]}c[Z][h]=f}}return c}function T(c,Z){Z.fillStyle=c.fillStyle;Z.lineCap=c.lineCap;Z.lineJoin=c.lineJoin;Z.lineWidth=c.lineWidth;Z.miterLimit=c.miterLimit;Z.shadowBlur=c.shadowBlur;Z.shadowColor=c.shadowColor;Z.shadowOffsetX=c.shadowOffsetX;Z.shadowOffsetY=c.shadowOffsetY;Z.strokeStyle=c.strokeStyle;Z.globalAlpha=c.globalAlpha;Z.arcScaleX_=c.arcScaleX_;Z.arcScaleY_=c.arcScaleY_;Z.lineScale_=c.lineScale_}function C(c){var f,e=1;c=String(c);if(c.substring(0,3)=="rgb"){var h=c.indexOf("(",3);var Z=c.indexOf(")",h+1);var g=c.substring(h+1,Z).split(",");f="#";for(var d=0;d<3;d++){f+=E[Number(g[d])]}if(g.length==4&&c.substr(3,1)=="a"){e=g[3]}}else{f=c}return{color:f,alpha:e}}function P(Z){switch(Z){case"butt":return"flat";case"round":return"round";case"square":default:return"square"}}function M(c){this.m_=N();this.mStack_=[];this.aStack_=[];this.currentPath_=[];this.strokeStyle="#000";this.fillStyle="#000";this.lineWidth=1;this.lineJoin="miter";this.lineCap="butt";this.miterLimit=A*1;this.globalAlpha=1;this.canvas=c;var Z=c.ownerDocument.createElement("div");Z.style.width=c.clientWidth+"px";Z.style.height=c.clientHeight+"px";Z.style.overflow="hidden";Z.style.position="absolute";c.appendChild(Z);this.element_=Z;this.arcScaleX_=1;this.arcScaleY_=1;this.lineScale_=1}var I=M.prototype;I.clearRect=function(){this.element_.innerHTML=""};I.beginPath=function(){this.currentPath_=[]};I.moveTo=function(c,Z){var d=this.getCoords_(c,Z);this.currentPath_.push({type:"moveTo",x:d.x,y:d.y});this.currentX_=d.x;this.currentY_=d.y};I.lineTo=function(c,Z){var d=this.getCoords_(c,Z);this.currentPath_.push({type:"lineTo",x:d.x,y:d.y});this.currentX_=d.x;this.currentY_=d.y};I.bezierCurveTo=function(d,c,j,i,h,f){var Z=this.getCoords_(h,f);var g=this.getCoords_(d,c);var e=this.getCoords_(j,i);L(this,g,e,Z)};function L(Z,e,d,c){Z.currentPath_.push({type:"bezierCurveTo",cp1x:e.x,cp1y:e.y,cp2x:d.x,cp2y:d.y,x:c.x,y:c.y});Z.currentX_=c.x;Z.currentY_=c.y}I.quadraticCurveTo=function(h,d,c,Z){var g=this.getCoords_(h,d);var f=this.getCoords_(c,Z);var i={x:this.currentX_+2/3*(g.x-this.currentX_),y:this.currentY_+2/3*(g.y-this.currentY_)};var e={x:i.x+(f.x-this.currentX_)/3,y:i.y+(f.y-this.currentY_)/3};L(this,i,e,f)};I.arc=function(k,i,j,f,c,d){j*=A;var o=d?"at":"wa";var l=k+a(f)*j-K;var n=i+O(f)*j-K;var Z=k+a(c)*j-K;var m=i+O(c)*j-K;if(l==Z&&!d){l+=0.125}var e=this.getCoords_(k,i);var h=this.getCoords_(l,n);var g=this.getCoords_(Z,m);this.currentPath_.push({type:o,x:e.x,y:e.y,radius:j,xStart:h.x,yStart:h.y,xEnd:g.x,yEnd:g.y})};I.rect=function(d,c,Z,e){this.moveTo(d,c);this.lineTo(d+Z,c);this.lineTo(d+Z,c+e);this.lineTo(d,c+e);this.closePath()};I.strokeRect=function(d,c,Z,e){var f=this.currentPath_;this.beginPath();this.moveTo(d,c);this.lineTo(d+Z,c);this.lineTo(d+Z,c+e);this.lineTo(d,c+e);this.closePath();this.stroke();this.currentPath_=f};I.fillRect=function(d,c,Z,e){var f=this.currentPath_;this.beginPath();this.moveTo(d,c);this.lineTo(d+Z,c);this.lineTo(d+Z,c+e);this.lineTo(d,c+e);this.closePath();this.fill();this.currentPath_=f};I.createLinearGradient=function(c,e,Z,d){var f=new W("gradient");f.x0_=c;f.y0_=e;f.x1_=Z;f.y1_=d;return f};I.createRadialGradient=function(e,g,d,c,f,Z){var h=new W("gradientradial");h.x0_=e;h.y0_=g;h.r0_=d;h.x1_=c;h.y1_=f;h.r1_=Z;return h};I.drawImage=function(s,e){var l,j,n,AA,q,o,u,AC;var m=s.runtimeStyle.width;var r=s.runtimeStyle.height;s.runtimeStyle.width="auto";s.runtimeStyle.height="auto";var k=s.width;var y=s.height;s.runtimeStyle.width=m;s.runtimeStyle.height=r;if(arguments.length==3){l=arguments[1];j=arguments[2];q=o=0;u=n=k;AC=AA=y}else{if(arguments.length==5){l=arguments[1];j=arguments[2];n=arguments[3];AA=arguments[4];q=o=0;u=k;AC=y}else{if(arguments.length==9){q=arguments[1];o=arguments[2];u=arguments[3];AC=arguments[4];l=arguments[5];j=arguments[6];n=arguments[7];AA=arguments[8]}else{throw Error("Invalid number of arguments")}}}var AB=this.getCoords_(l,j);var f=u/2;var c=AC/2;var z=[];var Z=10;var i=10;z.push(" <g_vml_:group",' coordsize="',A*Z,",",A*i,'"',' coordorigin="0,0"',' style="width:',Z,"px;height:",i,"px;position:absolute;");if(this.m_[0][0]!=1||this.m_[0][1]){var g=[];g.push("M11=",this.m_[0][0],",","M12=",this.m_[1][0],",","M21=",this.m_[0][1],",","M22=",this.m_[1][1],",","Dx=",S(AB.x/A),",","Dy=",S(AB.y/A),"");var x=AB;var v=this.getCoords_(l+n,j);var t=this.getCoords_(l,j+AA);var p=this.getCoords_(l+n,j+AA);x.x=R.max(x.x,v.x,t.x,p.x);x.y=R.max(x.y,v.y,t.y,p.y);z.push("padding:0 ",S(x.x/A),"px ",S(x.y/A),"px 0;filter:progid:DXImageTransform.Microsoft.Matrix(",g.join(""),", sizingmethod='clip');")}else{z.push("top:",S(AB.y/A),"px;left:",S(AB.x/A),"px;")}z.push(' ">','<g_vml_:image src="',s.src,'"',' style="width:',A*n,"px;"," height:",A*AA,'px;"',' cropleft="',q/k,'"',' croptop="',o/y,'"',' cropright="',(k-q-u)/k,'"',' cropbottom="',(y-o-AC)/y,'"'," />","</g_vml_:group>");this.element_.insertAdjacentHTML("BeforeEnd",z.join(""))};I.stroke=function(AE){var j=[];var k=false;var AP=C(AE?this.fillStyle:this.strokeStyle);var AA=AP.color;var AK=AP.alpha*this.globalAlpha;var f=10;var m=10;j.push("<g_vml_:shape",' filled="',!!AE,'"',' style="position:absolute;width:',f,"px;height:",m,'px;"',' coordorigin="0 0" coordsize="',A*f," ",A*m,'"',' stroked="',!AE,'"',' path="');var l=false;var AO={x:null,y:null};var w={x:null,y:null};for(var AJ=0;AJ<this.currentPath_.length;AJ++){var AI=this.currentPath_[AJ];var AN;switch(AI.type){case"moveTo":AN=AI;j.push(" m ",S(AI.x),",",S(AI.y));break;case"lineTo":j.push(" l ",S(AI.x),",",S(AI.y));break;case"close":j.push(" x ");AI=null;break;case"bezierCurveTo":j.push(" c ",S(AI.cp1x),",",S(AI.cp1y),",",S(AI.cp2x),",",S(AI.cp2y),",",S(AI.x),",",S(AI.y));break;case"at":case"wa":j.push(" ",AI.type," ",S(AI.x-this.arcScaleX_*AI.radius),",",S(AI.y-this.arcScaleY_*AI.radius)," ",S(AI.x+this.arcScaleX_*AI.radius),",",S(AI.y+this.arcScaleY_*AI.radius)," ",S(AI.xStart),",",S(AI.yStart)," ",S(AI.xEnd),",",S(AI.yEnd));break}if(AI){if(AO.x==null||AI.x<AO.x){AO.x=AI.x}if(w.x==null||AI.x>w.x){w.x=AI.x}if(AO.y==null||AI.y<AO.y){AO.y=AI.y}if(w.y==null||AI.y>w.y){w.y=AI.y}}}j.push(' ">');if(!AE){var v=this.lineScale_*this.lineWidth;if(v<1){AK*=v}j.push("<g_vml_:stroke",' opacity="',AK,'"',' joinstyle="',this.lineJoin,'"',' miterlimit="',this.miterLimit,'"',' endcap="',P(this.lineCap),'"',' weight="',v,'px"',' color="',AA,'" />')}else{if(typeof this.fillStyle=="object"){var n=this.fillStyle;var t=0;var AH={x:0,y:0};var AB=0;var r=1;if(n.type_=="gradient"){var q=n.x0_/this.arcScaleX_;var d=n.y0_/this.arcScaleY_;var o=n.x1_/this.arcScaleX_;var AQ=n.y1_/this.arcScaleY_;var AM=this.getCoords_(q,d);var AL=this.getCoords_(o,AQ);var h=AL.x-AM.x;var g=AL.y-AM.y;t=Math.atan2(h,g)*180/Math.PI;if(t<0){t+=360}if(t<0.000001){t=0}}else{var AM=this.getCoords_(n.x0_,n.y0_);var Z=w.x-AO.x;var e=w.y-AO.y;AH={x:(AM.x-AO.x)/Z,y:(AM.y-AO.y)/e};Z/=this.arcScaleX_*A;e/=this.arcScaleY_*A;var AG=R.max(Z,e);AB=2*n.r0_/AG;r=2*n.r1_/AG-AB}var z=n.colors_;z.sort(function(i,c){return i.offset-c.offset});var u=z.length;var y=z[0].color;var x=z[u-1].color;var AD=z[0].alpha*this.globalAlpha;var AC=z[u-1].alpha*this.globalAlpha;var AF=[];for(var AJ=0;AJ<u;AJ++){var s=z[AJ];AF.push(s.offset*r+AB+" "+s.color)}j.push('<g_vml_:fill type="',n.type_,'"',' method="none" focus="100%"',' color="',y,'"',' color2="',x,'"',' colors="',AF.join(","),'"',' opacity="',AC,'"',' g_o_:opacity2="',AD,'"',' angle="',t,'"',' focusposition="',AH.x,",",AH.y,'" />')}else{j.push('<g_vml_:fill color="',AA,'" opacity="',AK,'" />')}}j.push("</g_vml_:shape>");this.element_.insertAdjacentHTML("beforeEnd",j.join(""))};I.fill=function(){this.stroke(true)};I.closePath=function(){this.currentPath_.push({type:"close"})};I.getCoords_=function(d,c){var Z=this.m_;return{x:A*(d*Z[0][0]+c*Z[1][0]+Z[2][0])-K,y:A*(d*Z[0][1]+c*Z[1][1]+Z[2][1])-K}};I.save=function(){var Z={};T(this,Z);this.aStack_.push(Z);this.mStack_.push(this.m_);this.m_=D(N(),this.m_)};I.restore=function(){T(this.aStack_.pop(),this);this.m_=this.mStack_.pop()};I.translate=function(d,c){var Z=[[1,0,0],[0,1,0],[d,c,1]];this.m_=D(Z,this.m_)};I.rotate=function(d){var f=a(d);var e=O(d);var Z=[[f,e,0],[-e,f,0],[0,0,1]];this.m_=D(Z,this.m_)};I.scale=function(f,e){this.arcScaleX_*=f;this.arcScaleY_*=e;var c=[[f,0,0],[0,e,0],[0,0,1]];var Z=this.m_=D(c,this.m_);var d=Z[0][0]*Z[1][1]-Z[0][1]*Z[1][0];this.lineScale_=Y(J(d))};I.clip=function(){};I.arcTo=function(){};I.createPattern=function(){return new F};function W(Z){this.type_=Z;this.x0_=0;this.y0_=0;this.r0_=0;this.x1_=0;this.y1_=0;this.r1_=0;this.colors_=[]}W.prototype.addColorStop=function(c,Z){Z=C(Z);this.colors_.push({offset:c,color:Z.color,alpha:Z.alpha})};function F(){}G_vmlCanvasManager=H;CanvasRenderingContext2D=M;CanvasGradient=W;CanvasPattern=F})()};
\ No newline at end of file

excanvas.pack.js

-if(!window.CanvasRenderingContext2D){(function(){var m=Math;var mr=m.round;var ms=m.sin;var mc=m.cos;var Z=10;var Z2=Z/2;var G_vmlCanvasManager_={init:function(opt_doc){var doc=opt_doc||document;if(/MSIE/.test(navigator.userAgent)&&!window.opera){var self=this;doc.attachEvent("onreadystatechange",function(){self.init_(doc)})}},init_:function(doc){if(doc.readyState=="complete"){if(!doc.namespaces["g_vml_"]){doc.namespaces.add("g_vml_","urn:schemas-microsoft-com:vml")}var ss=doc.createStyleSheet();ss.cssText="canvas{display:inline-block;overflow:hidden;"+"text-align:left;width:300px;height:150px}"+"g_vml_\\:*{behavior:url(#default#VML)}";var els=doc.getElementsByTagName("canvas");for(var i=0;i<els.length;i++){if(!els[i].getContext){this.initElement(els[i])}}}},fixElement_:function(el){var outerHTML=el.outerHTML;var newEl=el.ownerDocument.createElement(outerHTML);if(outerHTML.slice(-2)!="/>"){var tagName="/"+el.tagName;var ns;while((ns=el.nextSibling)&&ns.tagName!=tagName){ns.removeNode()}if(ns){ns.removeNode()}}el.parentNode.replaceChild(newEl,el);return newEl},initElement:function(el){el=this.fixElement_(el);el.getContext=function(){if(this.context_){return this.context_}return this.context_=new CanvasRenderingContext2D_(this)};el.attachEvent('onpropertychange',onPropertyChange);el.attachEvent('onresize',onResize);var attrs=el.attributes;if(attrs.width&&attrs.width.specified){el.style.width=attrs.width.nodeValue+"px"}else{el.width=el.clientWidth}if(attrs.height&&attrs.height.specified){el.style.height=attrs.height.nodeValue+"px"}else{el.height=el.clientHeight}return el}};function onPropertyChange(e){var el=e.srcElement;switch(e.propertyName){case'width':el.style.width=el.attributes.width.nodeValue+"px";el.getContext().clearRect();break;case'height':el.style.height=el.attributes.height.nodeValue+"px";el.getContext().clearRect();break}}function onResize(e){var el=e.srcElement;if(el.firstChild){el.firstChild.style.width=el.clientWidth+'px';el.firstChild.style.height=el.clientHeight+'px'}}G_vmlCanvasManager_.init();var dec2hex=[];for(var i=0;i<16;i++){for(var j=0;j<16;j++){dec2hex[i*16+j]=i.toString(16)+j.toString(16)}}function createMatrixIdentity(){return[[1,0,0],[0,1,0],[0,0,1]]}function matrixMultiply(m1,m2){var result=createMatrixIdentity();for(var x=0;x<3;x++){for(var y=0;y<3;y++){var sum=0;for(var z=0;z<3;z++){sum+=m1[x][z]*m2[z][y]}result[x][y]=sum}}return result}function copyState(o1,o2){o2.fillStyle=o1.fillStyle;o2.lineCap=o1.lineCap;o2.lineJoin=o1.lineJoin;o2.lineWidth=o1.lineWidth;o2.miterLimit=o1.miterLimit;o2.shadowBlur=o1.shadowBlur;o2.shadowColor=o1.shadowColor;o2.shadowOffsetX=o1.shadowOffsetX;o2.shadowOffsetY=o1.shadowOffsetY;o2.strokeStyle=o1.strokeStyle;o2.arcScaleX_=o1.arcScaleX_;o2.arcScaleY_=o1.arcScaleY_}function processStyle(styleString){var str,alpha=1;styleString=String(styleString);if(styleString.substring(0,3)=="rgb"){var start=styleString.indexOf("(",3);var end=styleString.indexOf(")",start+1);var guts=styleString.substring(start+1,end).split(",");str="#";for(var i=0;i<3;i++){str+=dec2hex[Number(guts[i])]}if((guts.length==4)&&(styleString.substr(3,1)=="a")){alpha=guts[3]}}else{str=styleString}return[str,alpha]}function processLineCap(lineCap){switch(lineCap){case"butt":return"flat";case"round":return"round";case"square":default:return"square"}}function CanvasRenderingContext2D_(surfaceElement){this.m_=createMatrixIdentity();this.mStack_=[];this.aStack_=[];this.currentPath_=[];this.strokeStyle="#000";this.fillStyle="#000";this.lineWidth=1;this.lineJoin="miter";this.lineCap="butt";this.miterLimit=Z*1;this.globalAlpha=1;this.canvas=surfaceElement;var el=surfaceElement.ownerDocument.createElement('div');el.style.width=surfaceElement.clientWidth+'px';el.style.height=surfaceElement.clientHeight+'px';el.style.overflow='hidden';el.style.position='absolute';surfaceElement.appendChild(el);this.element_=el;this.arcScaleX_=1;this.arcScaleY_=1}var contextPrototype=CanvasRenderingContext2D_.prototype;contextPrototype.clearRect=function(){this.element_.innerHTML="";this.currentPath_=[]};contextPrototype.beginPath=function(){this.currentPath_=[]};contextPrototype.moveTo=function(aX,aY){this.currentPath_.push({type:"moveTo",x:aX,y:aY});this.currentX_=aX;this.currentY_=aY};contextPrototype.lineTo=function(aX,aY){this.currentPath_.push({type:"lineTo",x:aX,y:aY});this.currentX_=aX;this.currentY_=aY};contextPrototype.bezierCurveTo=function(aCP1x,aCP1y,aCP2x,aCP2y,aX,aY){this.currentPath_.push({type:"bezierCurveTo",cp1x:aCP1x,cp1y:aCP1y,cp2x:aCP2x,cp2y:aCP2y,x:aX,y:aY});this.currentX_=aX;this.currentY_=aY};contextPrototype.quadraticCurveTo=function(aCPx,aCPy,aX,aY){var cp1x=this.currentX_+2.0/3.0*(aCPx-this.currentX_);var cp1y=this.currentY_+2.0/3.0*(aCPy-this.currentY_);var cp2x=cp1x+(aX-this.currentX_)/3.0;var cp2y=cp1y+(aY-this.currentY_)/3.0;this.bezierCurveTo(cp1x,cp1y,cp2x,cp2y,aX,aY)};contextPrototype.arc=function(aX,aY,aRadius,aStartAngle,aEndAngle,aClockwise){aRadius*=Z;var arcType=aClockwise?"at":"wa";var xStart=aX+(mc(aStartAngle)*aRadius)-Z2;var yStart=aY+(ms(aStartAngle)*aRadius)-Z2;var xEnd=aX+(mc(aEndAngle)*aRadius)-Z2;var yEnd=aY+(ms(aEndAngle)*aRadius)-Z2;if(xStart==xEnd&&!aClockwise){xStart+=0.125}this.currentPath_.push({type:arcType,x:aX,y:aY,radius:aRadius,xStart:xStart,yStart:yStart,xEnd:xEnd,yEnd:yEnd})};contextPrototype.rect=function(aX,aY,aWidth,aHeight){this.moveTo(aX,aY);this.lineTo(aX+aWidth,aY);this.lineTo(aX+aWidth,aY+aHeight);this.lineTo(aX,aY+aHeight);this.closePath()};contextPrototype.strokeRect=function(aX,aY,aWidth,aHeight){this.beginPath();this.moveTo(aX,aY);this.lineTo(aX+aWidth,aY);this.lineTo(aX+aWidth,aY+aHeight);this.lineTo(aX,aY+aHeight);this.closePath();this.stroke()};contextPrototype.fillRect=function(aX,aY,aWidth,aHeight){this.beginPath();this.moveTo(aX,aY);this.lineTo(aX+aWidth,aY);this.lineTo(aX+aWidth,aY+aHeight);this.lineTo(aX,aY+aHeight);this.closePath();this.fill()};contextPrototype.createLinearGradient=function(aX0,aY0,aX1,aY1){var gradient=new CanvasGradient_("gradient");return gradient};contextPrototype.createRadialGradient=function(aX0,aY0,aR0,aX1,aY1,aR1){var gradient=new CanvasGradient_("gradientradial");gradient.radius1_=aR0;gradient.radius2_=aR1;gradient.focus_.x=aX0;gradient.focus_.y=aY0;return gradient};contextPrototype.drawImage=function(image,var_args){var dx,dy,dw,dh,sx,sy,sw,sh;var oldRuntimeWidth=image.runtimeStyle.width;var oldRuntimeHeight=image.runtimeStyle.height;image.runtimeStyle.width='auto';image.runtimeStyle.height='auto';var w=image.width;var h=image.height;image.runtimeStyle.width=oldRuntimeWidth;image.runtimeStyle.height=oldRuntimeHeight;if(arguments.length==3){dx=arguments[1];dy=arguments[2];sx=sy=0;sw=dw=w;sh=dh=h}else if(arguments.length==5){dx=arguments[1];dy=arguments[2];dw=arguments[3];dh=arguments[4];sx=sy=0;sw=w;sh=h}else if(arguments.length==9){sx=arguments[1];sy=arguments[2];sw=arguments[3];sh=arguments[4];dx=arguments[5];dy=arguments[6];dw=arguments[7];dh=arguments[8]}else{throw"Invalid number of arguments";}var d=this.getCoords_(dx,dy);var w2=sw/2;var h2=sh/2;var vmlStr=[];var W=10;var H=10;vmlStr.push(' <g_vml_:group',' coordsize="',Z*W,',',Z*H,'"',' coordorigin="0,0"',' style="width:',W,';height:',H,';position:absolute;');if(this.m_[0][0]!=1||this.m_[0][1]){var filter=[];filter.push("M11='",this.m_[0][0],"',","M12='",this.m_[1][0],"',","M21='",this.m_[0][1],"',","M22='",this.m_[1][1],"',","Dx='",mr(d.x/Z),"',","Dy='",mr(d.y/Z),"'");var max=d;var c2=this.getCoords_(dx+dw,dy);var c3=this.getCoords_(dx,dy+dh);var c4=this.getCoords_(dx+dw,dy+dh);max.x=Math.max(max.x,c2.x,c3.x,c4.x);max.y=Math.max(max.y,c2.y,c3.y,c4.y);vmlStr.push("padding:0 ",mr(max.x/Z),"px ",mr(max.y/Z),"px 0;filter:progid:DXImageTransform.Microsoft.Matrix(",filter.join(""),", sizingmethod='clip');")}else{vmlStr.push("top:",mr(d.y/Z),"px;left:",mr(d.x/Z),"px;")}vmlStr.push(' ">','<g_vml_:image src="',image.src,'"',' style="width:',Z*dw,';',' height:',Z*dh,';"',' cropleft="',sx/w,'"',' croptop="',sy/h,'"',' cropright="',(w-sx-sw)/w,'"',' cropbottom="',(h-sy-sh)/h,'"',' />','</g_vml_:group>');this.element_.insertAdjacentHTML("BeforeEnd",vmlStr.join(""))};contextPrototype.stroke=function(aFill){var lineStr=[];var lineOpen=false;var a=processStyle(aFill?this.fillStyle:this.strokeStyle);var color=a[0];var opacity=a[1]*this.globalAlpha;var W=10;var H=10;lineStr.push('<g_vml_:shape',' fillcolor="',color,'"',' filled="',Boolean(aFill),'"',' style="position:absolute;width:',W,';height:',H,';"',' coordorigin="0 0" coordsize="',Z*W,' ',Z*H,'"',' stroked="',!aFill,'"',' strokeweight="',this.lineWidth,'"',' strokecolor="',color,'"',' path="');var newSeq=false;var min={x:null,y:null};var max={x:null,y:null};for(var i=0;i<this.currentPath_.length;i++){var p=this.currentPath_[i];if(p.type=="moveTo"){lineStr.push(" m ");var c=this.getCoords_(p.x,p.y);lineStr.push(mr(c.x),",",mr(c.y))}else if(p.type=="lineTo"){lineStr.push(" l ");var c=this.getCoords_(p.x,p.y);lineStr.push(mr(c.x),",",mr(c.y))}else if(p.type=="close"){lineStr.push(" x ")}else if(p.type=="bezierCurveTo"){lineStr.push(" c ");var c=this.getCoords_(p.x,p.y);var c1=this.getCoords_(p.cp1x,p.cp1y);var c2=this.getCoords_(p.cp2x,p.cp2y);lineStr.push(mr(c1.x),",",mr(c1.y),",",mr(c2.x),",",mr(c2.y),",",mr(c.x),",",mr(c.y))}else if(p.type=="at"||p.type=="wa"){lineStr.push(" ",p.type," ");var c=this.getCoords_(p.x,p.y);var cStart=this.getCoords_(p.xStart,p.yStart);var cEnd=this.getCoords_(p.xEnd,p.yEnd);lineStr.push(mr(c.x-this.arcScaleX_*p.radius),",",mr(c.y-this.arcScaleY_*p.radius)," ",mr(c.x+this.arcScaleX_*p.radius),",",mr(c.y+this.arcScaleY_*p.radius)," ",mr(cStart.x),",",mr(cStart.y)," ",mr(cEnd.x),",",mr(cEnd.y))}if(c){if(min.x==null||c.x<min.x){min.x=c.x}if(max.x==null||c.x>max.x){max.x=c.x}if(min.y==null||c.y<min.y){min.y=c.y}if(max.y==null||c.y>max.y){max.y=c.y}}}lineStr.push(' ">');if(typeof this.fillStyle=="object"){var focus={x:"50%",y:"50%"};var width=(max.x-min.x);var height=(max.y-min.y);var dimension=(width>height)?width:height;focus.x=mr((this.fillStyle.focus_.x/width)*100+50)+"%";focus.y=mr((this.fillStyle.focus_.y/height)*100+50)+"%";var colors=[];if(this.fillStyle.type_=="gradientradial"){var inside=(this.fillStyle.radius1_/dimension*100);var expansion=(this.fillStyle.radius2_/dimension*100)-inside}else{var inside=0;var expansion=100}var insidecolor={offset:null,color:null};var outsidecolor={offset:null,color:null};this.fillStyle.colors_.sort(function(cs1,cs2){return cs1.offset-cs2.offset});for(var i=0;i<this.fillStyle.colors_.length;i++){var fs=this.fillStyle.colors_[i];colors.push((fs.offset*expansion)+inside,"% ",fs.color,",");if(fs.offset>insidecolor.offset||insidecolor.offset==null){insidecolor.offset=fs.offset;insidecolor.color=fs.color}if(fs.offset<outsidecolor.offset||outsidecolor.offset==null){outsidecolor.offset=fs.offset;outsidecolor.color=fs.color}}colors.pop();lineStr.push('<g_vml_:fill',' color="',outsidecolor.color,'"',' color2="',insidecolor.color,'"',' type="',this.fillStyle.type_,'"',' focusposition="',focus.x,', ',focus.y,'"',' colors="',colors.join(""),'"',' opacity="',opacity,'" />')}else if(aFill){lineStr.push('<g_vml_:fill color="',color,'" opacity="',opacity,'" />')}else{lineStr.push('<g_vml_:stroke',' opacity="',opacity,'"',' joinstyle="',this.lineJoin,'"',' miterlimit="',this.miterLimit,'"',' endcap="',processLineCap(this.lineCap),'"',' weight="',this.lineWidth,'px"',' color="',color,'" />')}lineStr.push("</g_vml_:shape>");this.element_.insertAdjacentHTML("beforeEnd",lineStr.join(""))};contextPrototype.fill=function(){this.stroke(true)};contextPrototype.closePath=function(){this.currentPath_.push({type:"close"})};contextPrototype.getCoords_=function(aX,aY){return{x:Z*(aX*this.m_[0][0]+aY*this.m_[1][0]+this.m_[2][0])-Z2,y:Z*(aX*this.m_[0][1]+aY*this.m_[1][1]+this.m_[2][1])-Z2}};contextPrototype.save=function(){var o={};copyState(this,o);this.aStack_.push(o);this.mStack_.push(this.m_);this.m_=matrixMultiply(createMatrixIdentity(),this.m_)};contextPrototype.restore=function(){copyState(this.aStack_.pop(),this);this.m_=this.mStack_.pop()};contextPrototype.translate=function(aX,aY){var m1=[[1,0,0],[0,1,0],[aX,aY,1]];this.m_=matrixMultiply(m1,this.m_)};contextPrototype.rotate=function(aRot){var c=mc(aRot);var s=ms(aRot);var m1=[[c,s,0],[-s,c,0],[0,0,1]];this.m_=matrixMultiply(m1,this.m_)};contextPrototype.scale=function(aX,aY){this.arcScaleX_*=aX;this.arcScaleY_*=aY;var m1=[[aX,0,0],[0,aY,0],[0,0,1]];this.m_=matrixMultiply(m1,this.m_)};contextPrototype.clip=function(){};contextPrototype.arcTo=function(){};contextPrototype.createPattern=function(){return new CanvasPattern_};function CanvasGradient_(aType){this.type_=aType;this.radius1_=0;this.radius2_=0;this.colors_=[];this.focus_={x:0,y:0}}CanvasGradient_.prototype.addColorStop=function(aOffset,aColor){aColor=processStyle(aColor);this.colors_.push({offset:1-aOffset,color:aColor})};function CanvasPattern_(){}G_vmlCanvasManager=G_vmlCanvasManager_;CanvasRenderingContext2D=CanvasRenderingContext2D_;CanvasGradient=CanvasGradient_;CanvasPattern=CanvasPattern_})()}

jquery.flot.js

@@ -328,6 +328,15 @@
         }
 
         function constructCanvas() {
+            function makeCanvas(width, height) {
+                var c = document.createElement('canvas');
+                c.width = width;
+                c.height = height;
+                if ($.browser.msie) // excanvas hack
+                    c = window.G_vmlCanvasManager.initElement(c);
+                return c;
+            }
+            
             canvasWidth = target.width();
             canvasHeight = target.height();
             target.html(""); // clear target
@@ -338,15 +347,13 @@
                 throw "Invalid dimensions for plot, width = " + canvasWidth + ", height = " + canvasHeight;
 
             // the canvas
-            canvas = $('<canvas width="' + canvasWidth + '" height="' + canvasHeight + '"></canvas>').appendTo(target).get(0);
-            if ($.browser.msie) // excanvas hack
-                canvas = window.G_vmlCanvasManager.initElement(canvas);
+            canvas = $(makeCanvas(canvasWidth, canvasHeight)).appendTo(target).get(0);
+            
             ctx = canvas.getContext("2d");
 
+//            overlay = $('<canvas style="position:absolute;left:0px;top:0px;" width="' + canvasWidth + '" height="' + canvasHeight + '"></canvas>').appendTo(target).get(0);
             // overlay canvas for interactive features
-            overlay = $('<canvas style="position:absolute;left:0px;top:0px;" width="' + canvasWidth + '" height="' + canvasHeight + '"></canvas>').appendTo(target).get(0);
-            if ($.browser.msie) // excanvas hack
-                overlay = window.G_vmlCanvasManager.initElement(overlay);
+            overlay = $(makeCanvas(canvasWidth, canvasHeight)).css({ position: 'absolute', left: 0, top: 0 }).appendTo(target).get(0);
             octx = overlay.getContext("2d");
 
             // we include the canvas in the event holder too, because IE 7