// 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.

if (!window.CanvasRenderingContext2D) { (function () { var m = Math; var mr = m.round; var ms = m.sin; var mc = m.cos; 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, e) { 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;}" + "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 = document.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('onresize', onResize); var attrs = el.attributes; if (attrs.width && attrs.width.specified) { el.style.width = attrs.width.nodeValue + "px";}
if (attrs.height && attrs.height.specified) { el.style.height = attrs.height.nodeValue + "px";}
return el;}
}; function onPropertyChange(e) { switch (e.propertyName) { case 'width':
case 'height':
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;}
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[parseInt(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 = "#ccc"; this.lineWidth = 1; this.lineJoin = "miter"; this.lineCap = "butt"; this.miterLimit = 10; this.globalAlpha = 1; var el = document.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});}; contextPrototype.lineTo = function(aX, aY) { this.currentPath_.push({type: "lineTo", x: aX, y: 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});}; contextPrototype.quadraticCurveTo = function(aCPx, aCPy, aX, aY) { this.bezierCurveTo(aCPx, aCPy, aCPx, aCPy, aX, aY);}; contextPrototype.arc = function(aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise) { aRadius *= 10; var arcType = aClockwise ? "at" : "wa"; var xStart = aX + (mc(aStartAngle) * aRadius) - 5; var yStart = aY + (ms(aStartAngle) * aRadius) - 5; var xEnd = aX + (mc(aEndAngle) * aRadius) - 5; var yEnd = aY + (ms(aEndAngle) * aRadius) - 5; 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 w = image.width; var h = image.height; 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 = []; vmlStr.push(' <g_vml_:group', ' coordsize="1000,1000"', ' coordorigin="0, 0"' , ' style="width:100px;height:100px;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='", d.x, "',", "Dy='", d.y, "'"); 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), "px ", mr(max.y), "px 0;filter:progid:DXImageTransform.Microsoft.Matrix(", filter.join(""), ", sizingmethod='clip');")
} else { vmlStr.push(" top:", d.y, "px;left:", d.x, "px;")
}
vmlStr.push(' ">' , '<g_vml_:image src="', image.src, '"', ' style="width:', dw, ';', ' height:', 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; lineStr.push('<g_vml_:shape', ' fillcolor="', color, '"', ' filled="', Boolean(aFill), '"', ' style="position:absolute;width:10;height:10;"', ' coordorigin="0 0" coordsize="100 100"', ' 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("")); this.currentPath_ = [];}; contextPrototype.fill = function() { this.stroke(true);}
contextPrototype.closePath = function() { this.currentPath_.push({type: "close"});}; contextPrototype.getCoords_ = function(aX, aY) { return { x: 10 * (aX * this.m_[0][0] + aY * this.m_[1][0] + this.m_[2][0]) - 5, y: 10 * (aX * this.m_[0][1] + aY * this.m_[1][1] + this.m_[2][1]) - 5
}
}; 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_;})();}