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excanvas.js
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excanvas.js
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			// 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

R4897/js-ext/excanvas.js6349abbae7b4master

excanvas.jsView Options

R4897/js-ext/excanvas.js
6349abbae7b4master

excanvas.js
View Options