+
−// Copyright 2006 Google Inc.
+
−//
+
−// Licensed under the Apache License, Version 2.0 (the "License");
+
−// you may not use this file except in compliance with the License.
+
−// You may obtain a copy of the License at
+
−//
+
−//   http://www.apache.org/licenses/LICENSE-2.0
+
−//
+
−// Unless required by applicable law or agreed to in writing, software
+
−// distributed under the License is distributed on an "AS IS" BASIS,
+
−// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+
−// See the License for the specific language governing permissions and
+
−// limitations under the License.
+
−
+
−
+
−// Known Issues:
+
−//
+
−// * Patterns are not implemented.
+
−// * Radial gradient are not implemented. The VML version of these look very
+
−//   different from the canvas one.
+
−// * Clipping paths are not implemented.
+
−// * Coordsize. The width and height attribute have higher priority than the
+
−//   width and height style values which isn't correct.
+
−// * Painting mode isn't implemented.
+
−// * Canvas width/height should is using content-box by default. IE in
+
−//   Quirks mode will draw the canvas using border-box. Either change your
+
−//   doctype to HTML5
+
−//   (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)
+
−// * Optimize. There is always room for speed improvements.
+
−
+
−// only add this code if we do not already have a canvas implementation
+
−if (!window.CanvasRenderingContext2D) {
+
−
+
−(function () {
+
−
+
−  // alias some functions to make (compiled) code shorter
+
−  var m = Math;
+
−  var mr = m.round;
+
−  var ms = m.sin;
+
−  var mc = m.cos;
+
−
+
−  // this is used for sub pixel precision
+
−  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") {
+
−        // create xmlns
+
−        if (!doc.namespaces["g_vml_"]) {
+
−          doc.namespaces.add("g_vml_", "urn:schemas-microsoft-com:vml");
+
−        }
+
−
+
−        // setup default css
+
−        var ss = doc.createStyleSheet();
+
−        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)}";
+
−
+
−        // find all canvas elements
+
−        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;
+
−    },
+
−
+
−    /**
+
−     * Public initializes a canvas element so that it can be used as canvas
+
−     * element from now on. This is called automatically before the page is
+
−     * loaded but if you are creating elements using createElement you need to
+
−     * make sure this is called on the element.
+
−     * @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);
+
−      };
+
−
+
−      // do not use inline function because that will leak memory
+
−      el.attachEvent('onpropertychange', onPropertyChange);
+
−      el.attachEvent('onresize', onResize);
+
−
+
−      var attrs = el.attributes;
+
−      if (attrs.width && attrs.width.specified) {
+
−        // TODO: use runtimeStyle and coordsize
+
−        // el.getContext().setWidth_(attrs.width.nodeValue);
+
−        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";
+
−      } else {
+
−        el.height = el.clientHeight;
+
−      }
+
−      //el.getContext().setCoordsize_()
+
−      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();
+
−
+
−  // precompute "00" to "FF"
+
−  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";
+
−    }
+
−  }
+
−
+
−  /**
+
−   * This class implements CanvasRenderingContext2D interface as described by
+
−   * the WHATWG.
+
−   * @param {HTMLElement} surfaceElement The element that the 2D context should
+
−   * be associated with
+
−   */
+
−   function CanvasRenderingContext2D_(surfaceElement) {
+
−    this.m_ = createMatrixIdentity();
+
−
+
−    this.mStack_ = [];
+
−    this.aStack_ = [];
+
−    this.currentPath_ = [];
+
−
+
−    // Canvas context properties
+
−    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() {
+
−    // 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;
+
−  };
+
−
+
−  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) {
+
−    // 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);
+
−  };
+
−
+
−  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;
+
−
+
−    // IE won't render arches drawn counter clockwise if xStart == xEnd.
+
−    if (xStart == xEnd && !aClockwise) {
+
−      xStart += 0.125; // Offset xStart by 1/80 of a pixel. Use something
+
−                       // that can be represented in binary
+
−    }
+
−
+
−    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) {
+
−    // Will destroy any existing path (same as FF behaviour)
+
−    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) {
+
−    // Will destroy any existing path (same as FF behaviour)
+
−    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;
+
−
+
−    // to find the original width we overide the width and height
+
−    var oldRuntimeWidth = image.runtimeStyle.width;
+
−    var oldRuntimeHeight = image.runtimeStyle.height;
+
−    image.runtimeStyle.width = 'auto';
+
−    image.runtimeStyle.height = 'auto';
+
−
+
−    // get the original size
+
−    var w = image.width;
+
−    var h = image.height;
+
−
+
−    // and remove overides
+
−    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;
+
−
+
−    // For some reason that I've now forgotten, using divs didn't work
+
−    vmlStr.push(' <g_vml_:group',
+
−                ' coordsize="', Z * W, ',', Z * H, '"',
+
−                ' coordorigin="0,0"' ,
+
−                ' style="width:', W, ';height:', H, ';position:absolute;');
+
−
+
−    // If filters are necessary (rotation exists), create them
+
−    // filters are bog-slow, so only create them if abbsolutely necessary
+
−    // The following check doesn't account for skews (which don't exist
+
−    // in the canvas spec (yet) anyway.
+
−
+
−    if (this.m_[0][0] != 1 || this.m_[0][1]) {
+
−      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), "'");
+
−
+
−      // Bounding box calculation (need to minimize displayed area so that
+
−      // filters don't waste time on unused pixels.
+
−      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));
+
−      }
+
−
+
−
+
−      // TODO: Following is broken for curves due to
+
−      //       move to proper paths.
+
−
+
−      // 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 (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 = [];
+
−
+
−      // inside radius (%)
+
−      if (this.fillStyle.type_ == "gradientradial") {
+
−        var inside = (this.fillStyle.radius1_ / dimension * 100);
+
−
+
−        // percentage that outside radius exceeds inside radius
+
−        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};
+
−
+
−      // We need to sort 'colors' by percentage, from 0 > 100 otherwise ie
+
−      // won't interpret it correctly
+
−      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(""));
+
−
+
−    //this.currentPath_ = [];
+
−  };
+
−
+
−  contextPrototype.fill = function() {
+
−    this.stroke(true);
+
−  };
+
−
+
−  contextPrototype.closePath = function() {
+
−    this.currentPath_.push({type: "close"});
+
−  };
+
−
+
−  /**
+
−   * @private
+
−   */
+
−  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_);
+
−  };
+
−
+
−  /******** STUBS ********/
+
−  contextPrototype.clip = function() {
+
−    // TODO: Implement
+
−  };
+
−
+
−  contextPrototype.arcTo = function() {
+
−    // TODO: Implement
+
−  };
+
−
+
−  contextPrototype.createPattern = function() {
+
−    return new CanvasPattern_;
+
−  };
+
−
+
−  // Gradient / Pattern Stubs
+
−  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_() {}
+
−
+
−  // set up externs
+
−  G_vmlCanvasManager = G_vmlCanvasManager_;
+
−  CanvasRenderingContext2D = CanvasRenderingContext2D_;
+
−  CanvasGradient = CanvasGradient_;
+
−  CanvasPattern = CanvasPattern_;
+
−
+
−})();
+
−
+
−} // if