--- a/web/data/excanvas.js Mon Jan 04 18:40:30 2016 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,1438 +0,0 @@
-// Memory Leaks patch from http://explorercanvas.googlecode.com/svn/trunk/
-// svn : r73
-// ------------------------------------------------------------------
-// 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 only support repeat.
-// * 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)
-// * 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 (!document.createElement('canvas').getContext) {
-
-(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;
-
- var IE_VERSION = +navigator.userAgent.match(/MSIE ([\d.]+)?/)[1];
-
- /**
- * 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)));
- };
- }
-
- function encodeHtmlAttribute(s) {
- return String(s).replace(/&/g, '&').replace(/"/g, '"');
- }
-
- function addNamespace(doc, prefix, urn) {
- if (!doc.namespaces[prefix]) {
- doc.namespaces.add(prefix, urn, '#default#VML');
- }
- }
-
- function addNamespacesAndStylesheet(doc) {
- addNamespace(doc, 'g_vml_', 'urn:schemas-microsoft-com:vml');
- addNamespace(doc, 'g_o_', 'urn:schemas-microsoft-com:office:office');
-
- // Setup default CSS. Only add one style sheet per document
- if (!doc.styleSheets['ex_canvas_']) {
- var ss = doc.createStyleSheet();
- 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}';
- }
- }
-
- // Add namespaces and stylesheet at startup.
- addNamespacesAndStylesheet(document);
-
- var G_vmlCanvasManager_ = {
- init: function(opt_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) {
- // find all canvas elements
- var els = doc.getElementsByTagName('canvas');
- for (var i = 0; i < els.length; i++) {
- this.initElement(els[i]);
- }
- },
-
- /**
- * 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) {
- if (!el.getContext) {
- el.getContext = getContext;
-
- // Add namespaces and stylesheet to document of the element.
- addNamespacesAndStylesheet(el.ownerDocument);
-
- // 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);
- 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;
- },
-
- // Memory Leaks patch : see http://code.google.com/p/explorercanvas/issues/detail?id=82
- uninitElement: function(el){
- if (el.getContext) {
- var ctx = el.getContext();
- delete ctx.element_;
- delete ctx.canvas;
- el.innerHTML = "";
- //el.outerHTML = "";
- el.context_ = null;
- el.getContext = null;
- el.detachEvent("onpropertychange", onPropertyChange);
- el.detachEvent("onresize", onResize);
- }
- }
- };
-
- function onPropertyChange(e) {
- var el = e.srcElement;
-
- switch (e.propertyName) {
- case 'width':
- el.getContext().clearRect();
- el.style.width = el.attributes.width.nodeValue + 'px';
- // In IE8 this does not trigger onresize.
- el.firstChild.style.width = el.clientWidth + 'px';
- break;
- case 'height':
- el.getContext().clearRect();
- el.style.height = el.attributes.height.nodeValue + 'px';
- el.firstChild.style.height = el.clientHeight + 'px';
- 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 decToHex = [];
- for (var i = 0; i < 16; i++) {
- for (var j = 0; j < 16; j++) {
- decToHex[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.globalAlpha = o1.globalAlpha;
- o2.font = o1.font;
- o2.textAlign = o1.textAlign;
- o2.textBaseline = o1.textBaseline;
- o2.arcScaleX_ = o1.arcScaleX_;
- o2.arcScaleY_ = o1.arcScaleY_;
- o2.lineScale_ = o1.lineScale_;
- }
-
- var colorData = {
- aliceblue: '#F0F8FF',
- antiquewhite: '#FAEBD7',
- aquamarine: '#7FFFD4',
- azure: '#F0FFFF',
- beige: '#F5F5DC',
- bisque: '#FFE4C4',
- black: '#000000',
- blanchedalmond: '#FFEBCD',
- blueviolet: '#8A2BE2',
- brown: '#A52A2A',
- burlywood: '#DEB887',
- cadetblue: '#5F9EA0',
- chartreuse: '#7FFF00',
- chocolate: '#D2691E',
- coral: '#FF7F50',
- cornflowerblue: '#6495ED',
- cornsilk: '#FFF8DC',
- crimson: '#DC143C',
- cyan: '#00FFFF',
- darkblue: '#00008B',
- darkcyan: '#008B8B',
- darkgoldenrod: '#B8860B',
- darkgray: '#A9A9A9',
- darkgreen: '#006400',
- darkgrey: '#A9A9A9',
- darkkhaki: '#BDB76B',
- darkmagenta: '#8B008B',
- darkolivegreen: '#556B2F',
- darkorange: '#FF8C00',
- darkorchid: '#9932CC',
- darkred: '#8B0000',
- darksalmon: '#E9967A',
- darkseagreen: '#8FBC8F',
- darkslateblue: '#483D8B',
- darkslategray: '#2F4F4F',
- darkslategrey: '#2F4F4F',
- darkturquoise: '#00CED1',
- darkviolet: '#9400D3',
- deeppink: '#FF1493',
- deepskyblue: '#00BFFF',
- dimgray: '#696969',
- dimgrey: '#696969',
- dodgerblue: '#1E90FF',
- firebrick: '#B22222',
- floralwhite: '#FFFAF0',
- forestgreen: '#228B22',
- gainsboro: '#DCDCDC',
- ghostwhite: '#F8F8FF',
- gold: '#FFD700',
- goldenrod: '#DAA520',
- grey: '#808080',
- greenyellow: '#ADFF2F',
- honeydew: '#F0FFF0',
- hotpink: '#FF69B4',
- indianred: '#CD5C5C',
- indigo: '#4B0082',
- ivory: '#FFFFF0',
- khaki: '#F0E68C',
- lavender: '#E6E6FA',
- lavenderblush: '#FFF0F5',
- lawngreen: '#7CFC00',
- lemonchiffon: '#FFFACD',
- lightblue: '#ADD8E6',
- lightcoral: '#F08080',
- lightcyan: '#E0FFFF',
- lightgoldenrodyellow: '#FAFAD2',
- lightgreen: '#90EE90',
- lightgrey: '#D3D3D3',
- lightpink: '#FFB6C1',
- lightsalmon: '#FFA07A',
- lightseagreen: '#20B2AA',
- lightskyblue: '#87CEFA',
- lightslategray: '#778899',
- lightslategrey: '#778899',
- lightsteelblue: '#B0C4DE',
- lightyellow: '#FFFFE0',
- limegreen: '#32CD32',
- linen: '#FAF0E6',
- magenta: '#FF00FF',
- mediumaquamarine: '#66CDAA',
- mediumblue: '#0000CD',
- mediumorchid: '#BA55D3',
- mediumpurple: '#9370DB',
- mediumseagreen: '#3CB371',
- mediumslateblue: '#7B68EE',
- mediumspringgreen: '#00FA9A',
- mediumturquoise: '#48D1CC',
- mediumvioletred: '#C71585',
- midnightblue: '#191970',
- mintcream: '#F5FFFA',
- mistyrose: '#FFE4E1',
- moccasin: '#FFE4B5',
- navajowhite: '#FFDEAD',
- oldlace: '#FDF5E6',
- olivedrab: '#6B8E23',
- orange: '#FFA500',
- orangered: '#FF4500',
- orchid: '#DA70D6',
- palegoldenrod: '#EEE8AA',
- palegreen: '#98FB98',
- paleturquoise: '#AFEEEE',
- palevioletred: '#DB7093',
- papayawhip: '#FFEFD5',
- peachpuff: '#FFDAB9',
- peru: '#CD853F',
- pink: '#FFC0CB',
- plum: '#DDA0DD',
- powderblue: '#B0E0E6',
- rosybrown: '#BC8F8F',
- royalblue: '#4169E1',
- saddlebrown: '#8B4513',
- salmon: '#FA8072',
- sandybrown: '#F4A460',
- seagreen: '#2E8B57',
- seashell: '#FFF5EE',
- sienna: '#A0522D',
- skyblue: '#87CEEB',
- slateblue: '#6A5ACD',
- slategray: '#708090',
- slategrey: '#708090',
- snow: '#FFFAFA',
- springgreen: '#00FF7F',
- steelblue: '#4682B4',
- tan: '#D2B48C',
- thistle: '#D8BFD8',
- tomato: '#FF6347',
- turquoise: '#40E0D0',
- violet: '#EE82EE',
- wheat: '#F5DEB3',
- whitesmoke: '#F5F5F5',
- yellowgreen: '#9ACD32'
- };
-
-
- function getRgbHslContent(styleString) {
- var start = styleString.indexOf('(', 3);
- var end = styleString.indexOf(')', start + 1);
- var parts = styleString.substring(start + 1, end).split(',');
- // add alpha if needed
- if (parts.length != 4 || styleString.charAt(3) != 'a') {
- parts[3] = 1;
- }
- return parts;
- }
-
- function percent(s) {
- return parseFloat(s) / 100;
- }
-
- function clamp(v, min, max) {
- return Math.min(max, Math.max(min, v));
- }
-
- function hslToRgb(parts){
- var r, g, b, h, s, l;
- h = parseFloat(parts[0]) / 360 % 360;
- if (h < 0)
- h++;
- s = clamp(percent(parts[1]), 0, 1);
- l = clamp(percent(parts[2]), 0, 1);
- if (s == 0) {
- r = g = b = l; // achromatic
- } else {
- var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
- var p = 2 * l - q;
- r = hueToRgb(p, q, h + 1 / 3);
- g = hueToRgb(p, q, h);
- b = hueToRgb(p, q, h - 1 / 3);
- }
-
- return '#' + decToHex[Math.floor(r * 255)] +
- decToHex[Math.floor(g * 255)] +
- decToHex[Math.floor(b * 255)];
- }
-
- function hueToRgb(m1, m2, h) {
- if (h < 0)
- h++;
- if (h > 1)
- h--;
-
- if (6 * h < 1)
- return m1 + (m2 - m1) * 6 * h;
- else if (2 * h < 1)
- return m2;
- else if (3 * h < 2)
- return m1 + (m2 - m1) * (2 / 3 - h) * 6;
- else
- return m1;
- }
-
- var processStyleCache = {};
-
- function processStyle(styleString) {
- if (styleString in processStyleCache) {
- return processStyleCache[styleString];
- }
-
- var str, alpha = 1;
-
- styleString = String(styleString);
- if (styleString.charAt(0) == '#') {
- str = styleString;
- } else if (/^rgb/.test(styleString)) {
- var parts = getRgbHslContent(styleString);
- var str = '#', n;
- for (var i = 0; i < 3; i++) {
- if (parts[i].indexOf('%') != -1) {
- n = Math.floor(percent(parts[i]) * 255);
- } else {
- n = +parts[i];
- }
- str += decToHex[clamp(n, 0, 255)];
- }
- alpha = +parts[3];
- } else if (/^hsl/.test(styleString)) {
- var parts = getRgbHslContent(styleString);
- str = hslToRgb(parts);
- alpha = parts[3];
- } else {
- str = colorData[styleString] || styleString;
- }
- return processStyleCache[styleString] = {color: str, alpha: alpha};
- }
-
- var DEFAULT_STYLE = {
- style: 'normal',
- variant: 'normal',
- weight: 'normal',
- size: 10,
- family: 'sans-serif'
- };
-
- // Internal text style cache
- var fontStyleCache = {};
-
- function processFontStyle(styleString) {
- if (fontStyleCache[styleString]) {
- return fontStyleCache[styleString];
- }
-
- var el = document.createElement('div');
- var style = el.style;
- try {
- style.font = styleString;
- } catch (ex) {
- // Ignore failures to set to invalid font.
- }
-
- return fontStyleCache[styleString] = {
- style: style.fontStyle || DEFAULT_STYLE.style,
- variant: style.fontVariant || DEFAULT_STYLE.variant,
- weight: style.fontWeight || DEFAULT_STYLE.weight,
- size: style.fontSize || DEFAULT_STYLE.size,
- family: style.fontFamily || DEFAULT_STYLE.family
- };
- }
-
- function getComputedStyle(style, element) {
- var computedStyle = {};
-
- for (var p in style) {
- computedStyle[p] = style[p];
- }
-
- // Compute the size
- var canvasFontSize = parseFloat(element.currentStyle.fontSize),
- fontSize = parseFloat(style.size);
-
- if (typeof style.size == 'number') {
- computedStyle.size = style.size;
- } else if (style.size.indexOf('px') != -1) {
- computedStyle.size = fontSize;
- } else if (style.size.indexOf('em') != -1) {
- computedStyle.size = canvasFontSize * fontSize;
- } else if(style.size.indexOf('%') != -1) {
- computedStyle.size = (canvasFontSize / 100) * fontSize;
- } else if (style.size.indexOf('pt') != -1) {
- computedStyle.size = fontSize / .75;
- } else {
- computedStyle.size = canvasFontSize;
- }
-
- // Different scaling between normal text and VML text. This was found using
- // trial and error to get the same size as non VML text.
- computedStyle.size *= 0.981;
-
- // Fix for VML handling of bare font family names. Add a '' around font family names.
- computedStyle.family = "'" + computedStyle.family.replace(/(\'|\")/g,'').replace(/\s*,\s*/g, "', '") + "'";
-
- return computedStyle;
- }
-
- function buildStyle(style) {
- return style.style + ' ' + style.variant + ' ' + style.weight + ' ' +
- style.size + 'px ' + style.family;
- }
-
- var lineCapMap = {
- 'butt': 'flat',
- 'round': 'round'
- };
-
- function processLineCap(lineCap) {
- return lineCapMap[lineCap] || 'square';
- }
-
- /**
- * This class implements CanvasRenderingContext2D interface as described by
- * the WHATWG.
- * @param {HTMLElement} canvasElement The element that the 2D context should
- * be associated with
- */
- function CanvasRenderingContext2D_(canvasElement) {
- 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.font = '10px sans-serif';
- this.textAlign = 'left';
- this.textBaseline = 'alphabetic';
- this.canvas = canvasElement;
-
- var cssText = 'width:' + canvasElement.clientWidth + 'px;height:' +
- canvasElement.clientHeight + 'px;overflow:hidden;position:absolute';
- var el = canvasElement.ownerDocument.createElement('div');
- el.style.cssText = cssText;
- canvasElement.appendChild(el);
-
- var overlayEl = el.cloneNode(false);
- // Use a non transparent background.
- overlayEl.style.backgroundColor = 'red';
- overlayEl.style.filter = 'alpha(opacity=0)';
- canvasElement.appendChild(overlayEl);
-
- this.element_ = el;
- this.arcScaleX_ = 1;
- this.arcScaleY_ = 1;
- this.lineScale_ = 1;
- }
-
- var contextPrototype = CanvasRenderingContext2D_.prototype;
- contextPrototype.clearRect = function() {
- if (this.textMeasureEl_) {
- this.textMeasureEl_.removeNode(true);
- this.textMeasureEl_ = null;
- }
- 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) {
- var p = getCoords(this, 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) {
- var p = getCoords(this, 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) {
- var p = getCoords(this, aX, aY);
- var cp1 = getCoords(this, aCP1x, aCP1y);
- var cp2 = getCoords(this, 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 cp = getCoords(this, aCPx, aCPy);
- var p = getCoords(this, 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 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
- }
-
- var p = getCoords(this, aX, aY);
- var pStart = getCoords(this, xStart, yStart);
- var pEnd = getCoords(this, xEnd, yEnd);
-
- this.currentPath_.push({type: arcType,
- x: p.x,
- y: p.y,
- radius: aRadius,
- xStart: pStart.x,
- yStart: pStart.y,
- xEnd: pEnd.x,
- yEnd: pEnd.y});
-
- };
-
- 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) {
- 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) {
- 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');
- 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.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) {
- 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 Error('Invalid number of arguments');
- }
-
- var d = getCoords(this, 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, '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
- // 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] ||
- this.m_[1][1] != 1 || this.m_[1][0]) {
- 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 = getCoords(this, dx + dw, dy);
- var c3 = getCoords(this, dx, dy + dh);
- var c4 = getCoords(this, dx + dw, dy + dh);
-
- 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');");
-
- } 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, 'px;',
- ' height:', Z * dh, 'px"',
- ' 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 W = 10;
- var H = 10;
-
- lineStr.push('<g_vml_:shape',
- ' filled="', !!aFill, '"',
- ' style="position:absolute;width:', W, 'px;height:', H, 'px;"',
- ' coordorigin="0,0"',
- ' coordsize="', Z * W, ',', Z * H, '"',
- ' stroked="', !aFill, '"',
- ' 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];
- var c;
-
- 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;
- }
-
-
- // TODO: Following is broken for curves due to
- // move to proper paths.
-
- // Figure out dimensions so we can do gradient fills
- // properly
- if (p) {
- if (min.x == null || p.x < min.x) {
- min.x = p.x;
- }
- if (max.x == null || p.x > max.x) {
- max.x = p.x;
- }
- if (min.y == null || p.y < min.y) {
- min.y = p.y;
- }
- if (max.y == null || p.y > max.y) {
- max.y = p.y;
- }
- }
- }
- lineStr.push(' ">');
-
- if (!aFill) {
- appendStroke(this, lineStr);
- } else {
- appendFill(this, lineStr, min, max);
- }
-
- lineStr.push('</g_vml_:shape>');
-
- this.element_.insertAdjacentHTML('beforeEnd', lineStr.join(''));
- };
-
- function appendStroke(ctx, lineStr) {
- var a = processStyle(ctx.strokeStyle);
- var color = a.color;
- var opacity = a.alpha * ctx.globalAlpha;
- var lineWidth = ctx.lineScale_ * ctx.lineWidth;
-
- // 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;
- }
-
- lineStr.push(
- '<g_vml_:stroke',
- ' opacity="', opacity, '"',
- ' joinstyle="', ctx.lineJoin, '"',
- ' miterlimit="', ctx.miterLimit, '"',
- ' endcap="', processLineCap(ctx.lineCap), '"',
- ' weight="', lineWidth, 'px"',
- ' color="', color, '" />'
- );
- }
-
- function appendFill(ctx, lineStr, min, max) {
- var fillStyle = ctx.fillStyle;
- var arcScaleX = ctx.arcScaleX_;
- var arcScaleY = ctx.arcScaleY_;
- var width = max.x - min.x;
- var height = max.y - min.y;
- if (fillStyle instanceof CanvasGradient_) {
- // TODO: Gradients transformed with the transformation matrix.
- 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_ / arcScaleX;
- var y0 = fillStyle.y0_ / arcScaleY;
- var x1 = fillStyle.x1_ / arcScaleX;
- var y1 = fillStyle.y1_ / arcScaleY;
- var p0 = getCoords(ctx, x0, y0);
- var p1 = getCoords(ctx, 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 = getCoords(ctx, fillStyle.x0_, fillStyle.y0_);
- focus = {
- x: (p0.x - min.x) / width,
- y: (p0.y - min.y) / height
- };
-
- width /= arcScaleX * Z;
- height /= arcScaleY * Z;
- var dimension = m.max(width, height);
- shift = 2 * fillStyle.r0_ / dimension;
- expansion = 2 * fillStyle.r1_ / dimension - shift;
- }
-
- // 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;
- });
-
- var length = stops.length;
- var color1 = stops[0].color;
- var color2 = stops[length - 1].color;
- var opacity1 = stops[0].alpha * ctx.globalAlpha;
- var opacity2 = stops[length - 1].alpha * ctx.globalAlpha;
-
- 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 if (fillStyle instanceof CanvasPattern_) {
- if (width && height) {
- var deltaLeft = -min.x;
- var deltaTop = -min.y;
- lineStr.push('<g_vml_:fill',
- ' position="',
- deltaLeft / width * arcScaleX * arcScaleX, ',',
- deltaTop / height * arcScaleY * arcScaleY, '"',
- ' type="tile"',
- // TODO: Figure out the correct size to fit the scale.
- //' size="', w, 'px ', h, 'px"',
- ' src="', fillStyle.src_, '" />');
- }
- } else {
- var a = processStyle(ctx.fillStyle);
- var color = a.color;
- var opacity = a.alpha * ctx.globalAlpha;
- lineStr.push('<g_vml_:fill color="', color, '" opacity="', opacity,
- '" />');
- }
- }
-
- contextPrototype.fill = function() {
- this.stroke(true);
- };
-
- contextPrototype.closePath = function() {
- this.currentPath_.push({type: 'close'});
- };
-
- function getCoords(ctx, aX, aY) {
- var m = ctx.m_;
- return {
- 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
- };
- };
-
- 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() {
- if (this.aStack_.length) {
- copyState(this.aStack_.pop(), this);
- this.m_ = this.mStack_.pop();
- }
- };
-
- function matrixIsFinite(m) {
- return isFinite(m[0][0]) && isFinite(m[0][1]) &&
- isFinite(m[1][0]) && isFinite(m[1][1]) &&
- isFinite(m[2][0]) && isFinite(m[2][1]);
- }
-
- function setM(ctx, m, updateLineScale) {
- if (!matrixIsFinite(m)) {
- return;
- }
- ctx.m_ = m;
-
- if (updateLineScale) {
- // 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];
- ctx.lineScale_ = sqrt(abs(det));
- }
- }
-
- contextPrototype.translate = function(aX, aY) {
- var m1 = [
- [1, 0, 0],
- [0, 1, 0],
- [aX, aY, 1]
- ];
-
- setM(this, matrixMultiply(m1, this.m_), false);
- };
-
- contextPrototype.rotate = function(aRot) {
- var c = mc(aRot);
- var s = ms(aRot);
-
- var m1 = [
- [c, s, 0],
- [-s, c, 0],
- [0, 0, 1]
- ];
-
- setM(this, matrixMultiply(m1, this.m_), false);
- };
-
- contextPrototype.scale = function(aX, aY) {
- this.arcScaleX_ *= aX;
- this.arcScaleY_ *= aY;
- var m1 = [
- [aX, 0, 0],
- [0, aY, 0],
- [0, 0, 1]
- ];
-
- setM(this, matrixMultiply(m1, this.m_), true);
- };
-
- contextPrototype.transform = function(m11, m12, m21, m22, dx, dy) {
- var m1 = [
- [m11, m12, 0],
- [m21, m22, 0],
- [dx, dy, 1]
- ];
-
- setM(this, matrixMultiply(m1, this.m_), true);
- };
-
- contextPrototype.setTransform = function(m11, m12, m21, m22, dx, dy) {
- var m = [
- [m11, m12, 0],
- [m21, m22, 0],
- [dx, dy, 1]
- ];
-
- setM(this, m, true);
- };
-
- /**
- * The text drawing function.
- * The maxWidth argument isn't taken in account, since no browser supports
- * it yet.
- */
- contextPrototype.drawText_ = function(text, x, y, maxWidth, stroke) {
- var m = this.m_,
- delta = 1000,
- left = 0,
- right = delta,
- offset = {x: 0, y: 0},
- lineStr = [];
-
- var fontStyle = getComputedStyle(processFontStyle(this.font), this.element_);
-
- var fontStyleString = buildStyle(fontStyle);
-
- var elementStyle = this.element_.currentStyle;
- var textAlign = this.textAlign.toLowerCase();
- switch (textAlign) {
- case 'left':
- case 'center':
- case 'right':
- break;
- case 'end':
- textAlign = elementStyle.direction == 'ltr' ? 'right' : 'left';
- break;
- case 'start':
- textAlign = elementStyle.direction == 'rtl' ? 'right' : 'left';
- break;
- default:
- textAlign = 'left';
- }
-
- // 1.75 is an arbitrary number, as there is no info about the text baseline
- switch (this.textBaseline) {
- case 'hanging':
- case 'top':
- offset.y = fontStyle.size / 1.75;
- break;
- case 'middle':
- break;
- default:
- case null:
- case 'alphabetic':
- case 'ideographic':
- case 'bottom':
- offset.y = -fontStyle.size / 2.25;
- break;
- }
-
- switch(textAlign) {
- case 'right':
- left = delta;
- right = 0.05;
- break;
- case 'center':
- left = right = delta / 2;
- break;
- }
-
- var d = getCoords(this, x + offset.x, y + offset.y);
-
- lineStr.push('<g_vml_:line from="', -left ,' 0" to="', right ,' 0.05" ',
- ' coordsize="100 100" coordorigin="0 0"',
- ' filled="', !stroke, '" stroked="', !!stroke,
- '" style="position:absolute;width:1px;height:1px;">');
-
- if (stroke) {
- appendStroke(this, lineStr);
- } else {
- // TODO: Fix the min and max params.
- appendFill(this, lineStr, {x: -left, y: 0},
- {x: right, y: fontStyle.size});
- }
-
- var skewM = m[0][0].toFixed(3) + ',' + m[1][0].toFixed(3) + ',' +
- m[0][1].toFixed(3) + ',' + m[1][1].toFixed(3) + ',0,0';
-
- var skewOffset = mr(d.x / Z + 1 - m[0][0]) + ',' + mr(d.y / Z - 2 * m[1][0]);
-
-
- lineStr.push('<g_vml_:skew on="t" matrix="', skewM ,'" ',
- ' offset="', skewOffset, '" origin="', left ,' 0" />',
- '<g_vml_:path textpathok="true" />',
- '<g_vml_:textpath on="true" string="',
- encodeHtmlAttribute(text),
- '" style="v-text-align:', textAlign,
- ';font:', encodeHtmlAttribute(fontStyleString),
- '" /></g_vml_:line>');
-
- this.element_.insertAdjacentHTML('beforeEnd', lineStr.join(''));
- };
-
- contextPrototype.fillText = function(text, x, y, maxWidth) {
- this.drawText_(text, x, y, maxWidth, false);
- };
-
- contextPrototype.strokeText = function(text, x, y, maxWidth) {
- this.drawText_(text, x, y, maxWidth, true);
- };
-
- contextPrototype.measureText = function(text) {
- if (!this.textMeasureEl_) {
- var s = '<span style="position:absolute;' +
- 'top:-20000px;left:0;padding:0;margin:0;border:none;' +
- 'white-space:pre;"></span>';
- this.element_.insertAdjacentHTML('beforeEnd', s);
- this.textMeasureEl_ = this.element_.lastChild;
- }
- var doc = this.element_.ownerDocument;
- this.textMeasureEl_.innerHTML = '';
- this.textMeasureEl_.style.font = this.font;
- // Don't use innerHTML or innerText because they allow markup/whitespace.
- this.textMeasureEl_.appendChild(doc.createTextNode(text));
- return {width: this.textMeasureEl_.offsetWidth};
- };
-
- /******** STUBS ********/
- contextPrototype.clip = function() {
- // TODO: Implement
- };
-
- contextPrototype.arcTo = function() {
- // TODO: Implement
- };
-
- contextPrototype.createPattern = function(image, repetition) {
- return new CanvasPattern_(image, repetition);
- };
-
- // Gradient / Pattern Stubs
- function CanvasGradient_(aType) {
- this.type_ = aType;
- this.x0_ = 0;
- this.y0_ = 0;
- this.r0_ = 0;
- this.x1_ = 0;
- this.y1_ = 0;
- this.r1_ = 0;
- this.colors_ = [];
- }
-
- CanvasGradient_.prototype.addColorStop = function(aOffset, aColor) {
- aColor = processStyle(aColor);
- this.colors_.push({offset: aOffset,
- color: aColor.color,
- alpha: aColor.alpha});
- };
-
- function CanvasPattern_(image, repetition) {
- assertImageIsValid(image);
- switch (repetition) {
- case 'repeat':
- case null:
- case '':
- this.repetition_ = 'repeat';
- break;
- case 'repeat-x':
- case 'repeat-y':
- case 'no-repeat':
- this.repetition_ = repetition;
- break;
- default:
- throwException('SYNTAX_ERR');
- }
-
- this.src_ = image.src;
- this.width_ = image.width;
- this.height_ = image.height;
- }
-
- function throwException(s) {
- throw new DOMException_(s);
- }
-
- function assertImageIsValid(img) {
- if (!img || img.nodeType != 1 || img.tagName != 'IMG') {
- throwException('TYPE_MISMATCH_ERR');
- }
- if (img.readyState != 'complete') {
- throwException('INVALID_STATE_ERR');
- }
- }
-
- function DOMException_(s) {
- this.code = this[s];
- this.message = s +': DOM Exception ' + this.code;
- }
- var p = DOMException_.prototype = new Error;
- p.INDEX_SIZE_ERR = 1;
- p.DOMSTRING_SIZE_ERR = 2;
- p.HIERARCHY_REQUEST_ERR = 3;
- p.WRONG_DOCUMENT_ERR = 4;
- p.INVALID_CHARACTER_ERR = 5;
- p.NO_DATA_ALLOWED_ERR = 6;
- p.NO_MODIFICATION_ALLOWED_ERR = 7;
- p.NOT_FOUND_ERR = 8;
- p.NOT_SUPPORTED_ERR = 9;
- p.INUSE_ATTRIBUTE_ERR = 10;
- p.INVALID_STATE_ERR = 11;
- p.SYNTAX_ERR = 12;
- p.INVALID_MODIFICATION_ERR = 13;
- p.NAMESPACE_ERR = 14;
- p.INVALID_ACCESS_ERR = 15;
- p.VALIDATION_ERR = 16;
- p.TYPE_MISMATCH_ERR = 17;
-
- // set up externs
- G_vmlCanvasManager = G_vmlCanvasManager_;
- CanvasRenderingContext2D = CanvasRenderingContext2D_;
- CanvasGradient = CanvasGradient_;
- CanvasPattern = CanvasPattern_;
- DOMException = DOMException_;
- G_vmlCanvasManager._version = 888;
-})();
-
-} // if