1073 lines
42 KiB
JavaScript
1073 lines
42 KiB
JavaScript
|
/*
|
|||
|
|
* (c) Copyright Ascensio System SIA 2010-2014
|
|||
|
|
*
|
|||
|
|
* This program is a free software product. You can redistribute it and/or
|
|||
|
|
* modify it under the terms of the GNU Affero General Public License (AGPL)
|
|||
|
|
* version 3 as published by the Free Software Foundation. In accordance with
|
|||
|
|
* Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
|
|||
|
|
* that Ascensio System SIA expressly excludes the warranty of non-infringement
|
|||
|
|
* of any third-party rights.
|
|||
|
|
*
|
|||
|
|
* This program is distributed WITHOUT ANY WARRANTY; without even the implied
|
|||
|
|
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For
|
|||
|
|
* details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
|
|||
|
|
*
|
|||
|
|
* You can contact Ascensio System SIA at Lubanas st. 125a-25, Riga, Latvia,
|
|||
|
|
* EU, LV-1021.
|
|||
|
|
*
|
|||
|
|
* The interactive user interfaces in modified source and object code versions
|
|||
|
|
* of the Program must display Appropriate Legal Notices, as required under
|
|||
|
|
* Section 5 of the GNU AGPL version 3.
|
|||
|
|
*
|
|||
|
|
* Pursuant to Section 7(b) of the License you must retain the original Product
|
|||
|
|
* logo when distributing the program. Pursuant to Section 7(e) we decline to
|
|||
|
|
* grant you any rights under trademark law for use of our trademarks.
|
|||
|
|
*
|
|||
|
|
* All the Product's GUI elements, including illustrations and icon sets, as
|
|||
|
|
* well as technical writing content are licensed under the terms of the
|
|||
|
|
* Creative Commons Attribution-ShareAlike 4.0 International. See the License
|
|||
|
|
* terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
|
|||
|
|
*
|
|||
|
|
*/
|
|||
|
|
if (!document.createElement("canvas").getContext) {
|
|||
|
|
(function () {
|
|||
|
|
var m = Math;
|
|||
|
|
var mr = m.round;
|
|||
|
|
var ms = m.sin;
|
|||
|
|
var mc = m.cos;
|
|||
|
|
var abs = m.abs;
|
|||
|
|
var sqrt = m.sqrt;
|
|||
|
|
var Z = 10;
|
|||
|
|
var Z2 = Z / 2;
|
|||
|
|
var IE_VERSION = +navigator.userAgent.match(/MSIE ([\d.]+)?/)[1];
|
|||
|
|
function getContext() {
|
|||
|
|
return this.context_ || (this.context_ = new CanvasRenderingContext2D_(this));
|
|||
|
|
}
|
|||
|
|
var slice = Array.prototype.slice;
|
|||
|
|
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]) {
|
|||
|
|
if (IE_VERSION >= 7) {
|
|||
|
|
doc.namespaces.add(prefix, urn).doImport("#default#VML");
|
|||
|
|
} else {
|
|||
|
|
doc.namespaces.add(prefix, urn);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
function addNamespacesAndStylesheet(doc) {
|
|||
|
|
addNamespace(doc, "g_vml_", "urn:schemas-microsoft-com:vml");
|
|||
|
|
addNamespace(doc, "g_o_", "urn:schemas-microsoft-com:office:office");
|
|||
|
|
if (!doc.styleSheets["ex_canvas_"]) {
|
|||
|
|
var ss = doc.createStyleSheet();
|
|||
|
|
ss.owningElement.id = "ex_canvas_";
|
|||
|
|
ss.cssText = "canvas{display:inline-block;overflow:hidden;" + "text-align:left;width:300px;height:150px}";
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
addNamespacesAndStylesheet(document);
|
|||
|
|
var G_vmlCanvasManager_ = {
|
|||
|
|
init: function (opt_doc) {
|
|||
|
|
var doc = opt_doc || document;
|
|||
|
|
doc.createElement("canvas");
|
|||
|
|
doc.attachEvent("onreadystatechange", bind(this.init_, this, doc));
|
|||
|
|
},
|
|||
|
|
init_: function (doc) {
|
|||
|
|
var els = doc.getElementsByTagName("canvas");
|
|||
|
|
for (var i = 0; i < els.length; i++) {
|
|||
|
|
this.initElement(els[i]);
|
|||
|
|
}
|
|||
|
|
},
|
|||
|
|
initElement: function (el) {
|
|||
|
|
if (!el.getContext) {
|
|||
|
|
el.getContext = getContext;
|
|||
|
|
addNamespacesAndStylesheet(el.ownerDocument);
|
|||
|
|
el.innerHTML = "";
|
|||
|
|
el.attachEvent("onpropertychange", onPropertyChange);
|
|||
|
|
el.attachEvent("onresize", onResize);
|
|||
|
|
var attrs = el.attributes;
|
|||
|
|
if (attrs.width && attrs.width.specified) {
|
|||
|
|
el.style.width = attrs.width.nodeValue + "px";
|
|||
|
|
} else {
|
|||
|
|
el.width = el.clientWidth;
|
|||
|
|
}
|
|||
|
|
if (attrs.height && attrs.height.specified) {
|
|||
|
|
el.style.height = attrs.height.nodeValue + "px";
|
|||
|
|
} else {
|
|||
|
|
el.height = el.clientHeight;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
return el;
|
|||
|
|
}
|
|||
|
|
};
|
|||
|
|
function onPropertyChange(e) {
|
|||
|
|
var el = e.srcElement;
|
|||
|
|
switch (e.propertyName) {
|
|||
|
|
case "width":
|
|||
|
|
el.getContext().clearRect();
|
|||
|
|
el.style.width = el.attributes.width.nodeValue + "px";
|
|||
|
|
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();
|
|||
|
|
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(",");
|
|||
|
|
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;
|
|||
|
|
} 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;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
function processStyle(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 {
|
|||
|
|
color: str,
|
|||
|
|
alpha: alpha
|
|||
|
|
};
|
|||
|
|
}
|
|||
|
|
var DEFAULT_STYLE = {
|
|||
|
|
style: "normal",
|
|||
|
|
variant: "normal",
|
|||
|
|
weight: "normal",
|
|||
|
|
size: 10,
|
|||
|
|
family: "sans-serif"
|
|||
|
|
};
|
|||
|
|
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) {}
|
|||
|
|
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];
|
|||
|
|
}
|
|||
|
|
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 / 0.75;
|
|||
|
|
} else {
|
|||
|
|
computedStyle.size = canvasFontSize;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
computedStyle.size *= 0.981;
|
|||
|
|
return computedStyle;
|
|||
|
|
}
|
|||
|
|
function buildStyle(style) {
|
|||
|
|
return style.style + " " + style.variant + " " + style.weight + " " + style.size + "px " + style.family;
|
|||
|
|
}
|
|||
|
|
function processLineCap(lineCap) {
|
|||
|
|
switch (lineCap) {
|
|||
|
|
case "butt":
|
|||
|
|
return "flat";
|
|||
|
|
case "round":
|
|||
|
|
return "round";
|
|||
|
|
case "square":
|
|||
|
|
default:
|
|||
|
|
return "square";
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
function CanvasRenderingContext2D_(canvasElement) {
|
|||
|
|
this.m_ = createMatrixIdentity();
|
|||
|
|
this.mStack_ = [];
|
|||
|
|
this.aStack_ = [];
|
|||
|
|
this.currentPath_ = [];
|
|||
|
|
this.strokeStyle = "#000";
|
|||
|
|
this.fillStyle = "#000";
|
|||
|
|
this.lineWidth = 1;
|
|||
|
|
this.lineJoin = "miter";
|
|||
|
|
this.lineCap = "butt";
|
|||
|
|
this.miterLimit = Z * 1;
|
|||
|
|
this.globalAlpha = 1;
|
|||
|
|
this.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);
|
|||
|
|
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 () {
|
|||
|
|
this.currentPath_ = [];
|
|||
|
|
};
|
|||
|
|
contextPrototype.moveTo = function (aX, aY) {
|
|||
|
|
var p = this.getCoords_(aX, aY);
|
|||
|
|
this.currentPath_.push({
|
|||
|
|
type: "moveTo",
|
|||
|
|
x: p.x,
|
|||
|
|
y: p.y
|
|||
|
|
});
|
|||
|
|
this.currentX_ = p.x;
|
|||
|
|
this.currentY_ = p.y;
|
|||
|
|
};
|
|||
|
|
contextPrototype.lineTo = function (aX, aY) {
|
|||
|
|
var p = this.getCoords_(aX, aY);
|
|||
|
|
this.currentPath_.push({
|
|||
|
|
type: "lineTo",
|
|||
|
|
x: p.x,
|
|||
|
|
y: p.y
|
|||
|
|
});
|
|||
|
|
this.currentX_ = p.x;
|
|||
|
|
this.currentY_ = p.y;
|
|||
|
|
};
|
|||
|
|
contextPrototype.bezierCurveTo = function (aCP1x, aCP1y, aCP2x, aCP2y, aX, aY) {
|
|||
|
|
var p = this.getCoords_(aX, aY);
|
|||
|
|
var cp1 = this.getCoords_(aCP1x, aCP1y);
|
|||
|
|
var cp2 = this.getCoords_(aCP2x, aCP2y);
|
|||
|
|
bezierCurveTo(this, cp1, cp2, p);
|
|||
|
|
};
|
|||
|
|
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) {
|
|||
|
|
var cp = this.getCoords_(aCPx, aCPy);
|
|||
|
|
var p = this.getCoords_(aX, aY);
|
|||
|
|
var cp1 = {
|
|||
|
|
x: this.currentX_ + 2 / 3 * (cp.x - this.currentX_),
|
|||
|
|
y: this.currentY_ + 2 / 3 * (cp.y - this.currentY_)
|
|||
|
|
};
|
|||
|
|
var cp2 = {
|
|||
|
|
x: cp1.x + (p.x - this.currentX_) / 3,
|
|||
|
|
y: cp1.y + (p.y - this.currentY_) / 3
|
|||
|
|
};
|
|||
|
|
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;
|
|||
|
|
if (xStart == xEnd && !aClockwise) {
|
|||
|
|
xStart += 0.125;
|
|||
|
|
}
|
|||
|
|
var p = this.getCoords_(aX, aY);
|
|||
|
|
var pStart = this.getCoords_(xStart, yStart);
|
|||
|
|
var pEnd = this.getCoords_(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;
|
|||
|
|
var oldRuntimeWidth = image.runtimeStyle.width;
|
|||
|
|
var oldRuntimeHeight = image.runtimeStyle.height;
|
|||
|
|
image.runtimeStyle.width = "auto";
|
|||
|
|
image.runtimeStyle.height = "auto";
|
|||
|
|
var w = image.width;
|
|||
|
|
var h = image.height;
|
|||
|
|
image.runtimeStyle.width = oldRuntimeWidth;
|
|||
|
|
image.runtimeStyle.height = oldRuntimeHeight;
|
|||
|
|
if (arguments.length == 3) {
|
|||
|
|
dx = arguments[1];
|
|||
|
|
dy = arguments[2];
|
|||
|
|
sx = sy = 0;
|
|||
|
|
sw = dw = w;
|
|||
|
|
sh = dh = h;
|
|||
|
|
} else {
|
|||
|
|
if (arguments.length == 5) {
|
|||
|
|
dx = arguments[1];
|
|||
|
|
dy = arguments[2];
|
|||
|
|
dw = arguments[3];
|
|||
|
|
dh = arguments[4];
|
|||
|
|
sx = sy = 0;
|
|||
|
|
sw = w;
|
|||
|
|
sh = h;
|
|||
|
|
} else {
|
|||
|
|
if (arguments.length == 9) {
|
|||
|
|
sx = arguments[1];
|
|||
|
|
sy = arguments[2];
|
|||
|
|
sw = arguments[3];
|
|||
|
|
sh = arguments[4];
|
|||
|
|
dx = arguments[5];
|
|||
|
|
dy = arguments[6];
|
|||
|
|
dw = arguments[7];
|
|||
|
|
dh = arguments[8];
|
|||
|
|
} else {
|
|||
|
|
throw Error("Invalid number of arguments");
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
var d = this.getCoords_(dx, dy);
|
|||
|
|
var w2 = sw / 2;
|
|||
|
|
var h2 = sh / 2;
|
|||
|
|
var vmlStr = [];
|
|||
|
|
var W = 10;
|
|||
|
|
var H = 10;
|
|||
|
|
vmlStr.push(" <g_vml_:group", ' coordsize="', Z * W, ",", Z * H, '"', ' coordorigin="0,0"', ' style="width:', W, "px;height:", H, "px;position:absolute;");
|
|||
|
|
if (this.m_[0][0] != 1 || this.m_[0][1] || this.m_[1][1] != 1 || this.m_[1][0]) {
|
|||
|
|
var filter = [];
|
|||
|
|
filter.push("M11=", this.m_[0][0], ",", "M12=", this.m_[1][0], ",", "M21=", this.m_[0][1], ",", "M22=", this.m_[1][1], ",", "Dx=", mr(d.x / Z), ",", "Dy=", mr(d.y / Z), "");
|
|||
|
|
var max = d;
|
|||
|
|
var c2 = this.getCoords_(dx + dw, dy);
|
|||
|
|
var c3 = this.getCoords_(dx, dy + dh);
|
|||
|
|
var c4 = this.getCoords_(dx + dw, dy + dh);
|
|||
|
|
max.x = 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;
|
|||
|
|
}
|
|||
|
|
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;
|
|||
|
|
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_) {
|
|||
|
|
var angle = 0;
|
|||
|
|
var focus = {
|
|||
|
|
x: 0,
|
|||
|
|
y: 0
|
|||
|
|
};
|
|||
|
|
var shift = 0;
|
|||
|
|
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 = ctx.getCoords_(x0, y0);
|
|||
|
|
var p1 = ctx.getCoords_(x1, y1);
|
|||
|
|
var dx = p1.x - p0.x;
|
|||
|
|
var dy = p1.y - p0.y;
|
|||
|
|
angle = Math.atan2(dx, dy) * 180 / Math.PI;
|
|||
|
|
if (angle < 0) {
|
|||
|
|
angle += 360;
|
|||
|
|
}
|
|||
|
|
if (angle < 1e-06) {
|
|||
|
|
angle = 0;
|
|||
|
|
}
|
|||
|
|
} else {
|
|||
|
|
var p0 = ctx.getCoords_(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;
|
|||
|
|
}
|
|||
|
|
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);
|
|||
|
|
}
|
|||
|
|
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"', ' 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"
|
|||
|
|
});
|
|||
|
|
};
|
|||
|
|
contextPrototype.getCoords_ = function (aX, aY) {
|
|||
|
|
var m = this.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) {
|
|||
|
|
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);
|
|||
|
|
};
|
|||
|
|
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";
|
|||
|
|
}
|
|||
|
|
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 = this.getCoords_(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 {
|
|||
|
|
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) + "," + mr(d.y / Z);
|
|||
|
|
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;
|
|||
|
|
this.textMeasureEl_.appendChild(doc.createTextNode(text));
|
|||
|
|
return {
|
|||
|
|
width: this.textMeasureEl_.offsetWidth
|
|||
|
|
};
|
|||
|
|
};
|
|||
|
|
contextPrototype.clip = function () {};
|
|||
|
|
contextPrototype.arcTo = function () {};
|
|||
|
|
contextPrototype.createPattern = function (image, repetition) {
|
|||
|
|
return new CanvasPattern_(image, repetition);
|
|||
|
|
};
|
|||
|
|
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;
|
|||
|
|
G_vmlCanvasManager = G_vmlCanvasManager_;
|
|||
|
|
CanvasRenderingContext2D = CanvasRenderingContext2D_;
|
|||
|
|
CanvasGradient = CanvasGradient_;
|
|||
|
|
CanvasPattern = CanvasPattern_;
|
|||
|
|
DOMException = DOMException_;
|
|||
|
|
})();
|
|||
|
|
}
|