mirror of
https://github.com/xcat2/xcat-core.git
synced 2025-11-04 13:22:36 +00:00
8bfb6ae655
git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@4952 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd
789 lines
23 KiB
JavaScript
789 lines
23 KiB
JavaScript
// Copyright 2006 Google Inc.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
|
|
// Known Issues:
|
|
//
|
|
// * Patterns are not implemented.
|
|
// * Radial gradient are not implemented. The VML version of these look very
|
|
// different from the canvas one.
|
|
// * Clipping paths are not implemented.
|
|
// * Coordsize. The width and height attribute have higher priority than the
|
|
// width and height style values which isn't correct.
|
|
// * Painting mode isn't implemented.
|
|
// * Canvas width/height should is using content-box by default. IE in
|
|
// Quirks mode will draw the canvas using border-box. Either change your
|
|
// doctype to HTML5
|
|
// (http://www.whatwg.org/specs/web-apps/current-work/#the-doctype)
|
|
// or use Box Sizing Behavior from WebFX
|
|
// (http://webfx.eae.net/dhtml/boxsizing/boxsizing.html)
|
|
// * Optimize. There is always room for speed improvements.
|
|
|
|
// only add this code if we do not already have a canvas implementation
|
|
if (!window.CanvasRenderingContext2D) {
|
|
|
|
(function () {
|
|
|
|
// alias some functions to make (compiled) code shorter
|
|
var m = Math;
|
|
var mr = m.round;
|
|
var ms = m.sin;
|
|
var mc = m.cos;
|
|
|
|
// this is used for sub pixel precision
|
|
var Z = 10;
|
|
var Z2 = Z / 2;
|
|
|
|
var G_vmlCanvasManager_ = {
|
|
init: function (opt_doc) {
|
|
var doc = opt_doc || document;
|
|
if (/MSIE/.test(navigator.userAgent) && !window.opera) {
|
|
var self = this;
|
|
doc.attachEvent("onreadystatechange", function () {
|
|
self.init_(doc);
|
|
});
|
|
}
|
|
},
|
|
|
|
init_: function (doc) {
|
|
if (doc.readyState == "complete") {
|
|
// create xmlns
|
|
if (!doc.namespaces["g_vml_"]) {
|
|
doc.namespaces.add("g_vml_", "urn:schemas-microsoft-com:vml");
|
|
}
|
|
|
|
// setup default css
|
|
var ss = doc.createStyleSheet();
|
|
ss.cssText = "canvas{display:inline-block;overflow:hidden;" +
|
|
// default size is 300x150 in Gecko and Opera
|
|
"text-align:left;width:300px;height:150px}" +
|
|
"g_vml_\\:*{behavior:url(#default#VML)}";
|
|
|
|
// find all canvas elements
|
|
var els = doc.getElementsByTagName("canvas");
|
|
for (var i = 0; i < els.length; i++) {
|
|
if (!els[i].getContext) {
|
|
this.initElement(els[i]);
|
|
}
|
|
}
|
|
}
|
|
},
|
|
|
|
fixElement_: function (el) {
|
|
// in IE before version 5.5 we would need to add HTML: to the tag name
|
|
// but we do not care about IE before version 6
|
|
var outerHTML = el.outerHTML;
|
|
|
|
var newEl = el.ownerDocument.createElement(outerHTML);
|
|
// if the tag is still open IE has created the children as siblings and
|
|
// it has also created a tag with the name "/FOO"
|
|
if (outerHTML.slice(-2) != "/>") {
|
|
var tagName = "/" + el.tagName;
|
|
var ns;
|
|
// remove content
|
|
while ((ns = el.nextSibling) && ns.tagName != tagName) {
|
|
ns.removeNode();
|
|
}
|
|
// remove the incorrect closing tag
|
|
if (ns) {
|
|
ns.removeNode();
|
|
}
|
|
}
|
|
el.parentNode.replaceChild(newEl, el);
|
|
return newEl;
|
|
},
|
|
|
|
/**
|
|
* Public initializes a canvas element so that it can be used as canvas
|
|
* element from now on. This is called automatically before the page is
|
|
* loaded but if you are creating elements using createElement you need to
|
|
* make sure this is called on the element.
|
|
* @param {HTMLElement} el The canvas element to initialize.
|
|
* @return {HTMLElement} the element that was created.
|
|
*/
|
|
initElement: function (el) {
|
|
el = this.fixElement_(el);
|
|
el.getContext = function () {
|
|
if (this.context_) {
|
|
return this.context_;
|
|
}
|
|
return this.context_ = new CanvasRenderingContext2D_(this);
|
|
};
|
|
|
|
// do not use inline function because that will leak memory
|
|
el.attachEvent('onpropertychange', onPropertyChange);
|
|
el.attachEvent('onresize', onResize);
|
|
|
|
var attrs = el.attributes;
|
|
if (attrs.width && attrs.width.specified) {
|
|
// TODO: use runtimeStyle and coordsize
|
|
// el.getContext().setWidth_(attrs.width.nodeValue);
|
|
el.style.width = attrs.width.nodeValue + "px";
|
|
} else {
|
|
el.width = el.clientWidth;
|
|
}
|
|
if (attrs.height && attrs.height.specified) {
|
|
// TODO: use runtimeStyle and coordsize
|
|
// el.getContext().setHeight_(attrs.height.nodeValue);
|
|
el.style.height = attrs.height.nodeValue + "px";
|
|
} else {
|
|
el.height = el.clientHeight;
|
|
}
|
|
//el.getContext().setCoordsize_()
|
|
return el;
|
|
}
|
|
};
|
|
|
|
function onPropertyChange(e) {
|
|
var el = e.srcElement;
|
|
|
|
switch (e.propertyName) {
|
|
case 'width':
|
|
el.style.width = el.attributes.width.nodeValue + "px";
|
|
el.getContext().clearRect();
|
|
break;
|
|
case 'height':
|
|
el.style.height = el.attributes.height.nodeValue + "px";
|
|
el.getContext().clearRect();
|
|
break;
|
|
}
|
|
}
|
|
|
|
function onResize(e) {
|
|
var el = e.srcElement;
|
|
if (el.firstChild) {
|
|
el.firstChild.style.width = el.clientWidth + 'px';
|
|
el.firstChild.style.height = el.clientHeight + 'px';
|
|
}
|
|
}
|
|
|
|
G_vmlCanvasManager_.init();
|
|
|
|
// precompute "00" to "FF"
|
|
var dec2hex = [];
|
|
for (var i = 0; i < 16; i++) {
|
|
for (var j = 0; j < 16; j++) {
|
|
dec2hex[i * 16 + j] = i.toString(16) + j.toString(16);
|
|
}
|
|
}
|
|
|
|
function createMatrixIdentity() {
|
|
return [
|
|
[1, 0, 0],
|
|
[0, 1, 0],
|
|
[0, 0, 1]
|
|
];
|
|
}
|
|
|
|
function matrixMultiply(m1, m2) {
|
|
var result = createMatrixIdentity();
|
|
|
|
for (var x = 0; x < 3; x++) {
|
|
for (var y = 0; y < 3; y++) {
|
|
var sum = 0;
|
|
|
|
for (var z = 0; z < 3; z++) {
|
|
sum += m1[x][z] * m2[z][y];
|
|
}
|
|
|
|
result[x][y] = sum;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
function copyState(o1, o2) {
|
|
o2.fillStyle = o1.fillStyle;
|
|
o2.lineCap = o1.lineCap;
|
|
o2.lineJoin = o1.lineJoin;
|
|
o2.lineWidth = o1.lineWidth;
|
|
o2.miterLimit = o1.miterLimit;
|
|
o2.shadowBlur = o1.shadowBlur;
|
|
o2.shadowColor = o1.shadowColor;
|
|
o2.shadowOffsetX = o1.shadowOffsetX;
|
|
o2.shadowOffsetY = o1.shadowOffsetY;
|
|
o2.strokeStyle = o1.strokeStyle;
|
|
o2.arcScaleX_ = o1.arcScaleX_;
|
|
o2.arcScaleY_ = o1.arcScaleY_;
|
|
}
|
|
|
|
function processStyle(styleString) {
|
|
var str, alpha = 1;
|
|
|
|
styleString = String(styleString);
|
|
if (styleString.substring(0, 3) == "rgb") {
|
|
var start = styleString.indexOf("(", 3);
|
|
var end = styleString.indexOf(")", start + 1);
|
|
var guts = styleString.substring(start + 1, end).split(",");
|
|
|
|
str = "#";
|
|
for (var i = 0; i < 3; i++) {
|
|
str += dec2hex[Number(guts[i])];
|
|
}
|
|
|
|
if ((guts.length == 4) && (styleString.substr(3, 1) == "a")) {
|
|
alpha = guts[3];
|
|
}
|
|
} else {
|
|
str = styleString;
|
|
}
|
|
|
|
return [str, alpha];
|
|
}
|
|
|
|
function processLineCap(lineCap) {
|
|
switch (lineCap) {
|
|
case "butt":
|
|
return "flat";
|
|
case "round":
|
|
return "round";
|
|
case "square":
|
|
default:
|
|
return "square";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This class implements CanvasRenderingContext2D interface as described by
|
|
* the WHATWG.
|
|
* @param {HTMLElement} surfaceElement The element that the 2D context should
|
|
* be associated with
|
|
*/
|
|
function CanvasRenderingContext2D_(surfaceElement) {
|
|
this.m_ = createMatrixIdentity();
|
|
|
|
this.mStack_ = [];
|
|
this.aStack_ = [];
|
|
this.currentPath_ = [];
|
|
|
|
// Canvas context properties
|
|
this.strokeStyle = "#000";
|
|
this.fillStyle = "#000";
|
|
|
|
this.lineWidth = 1;
|
|
this.lineJoin = "miter";
|
|
this.lineCap = "butt";
|
|
this.miterLimit = Z * 1;
|
|
this.globalAlpha = 1;
|
|
this.canvas = surfaceElement;
|
|
|
|
var el = surfaceElement.ownerDocument.createElement('div');
|
|
el.style.width = surfaceElement.clientWidth + 'px';
|
|
el.style.height = surfaceElement.clientHeight + 'px';
|
|
el.style.overflow = 'hidden';
|
|
el.style.position = 'absolute';
|
|
surfaceElement.appendChild(el);
|
|
|
|
this.element_ = el;
|
|
this.arcScaleX_ = 1;
|
|
this.arcScaleY_ = 1;
|
|
}
|
|
|
|
var contextPrototype = CanvasRenderingContext2D_.prototype;
|
|
contextPrototype.clearRect = function() {
|
|
this.element_.innerHTML = "";
|
|
this.currentPath_ = [];
|
|
};
|
|
|
|
contextPrototype.beginPath = function() {
|
|
// TODO: Branch current matrix so that save/restore has no effect
|
|
// as per safari docs.
|
|
|
|
this.currentPath_ = [];
|
|
};
|
|
|
|
contextPrototype.moveTo = function(aX, aY) {
|
|
this.currentPath_.push({type: "moveTo", x: aX, y: aY});
|
|
this.currentX_ = aX;
|
|
this.currentY_ = aY;
|
|
};
|
|
|
|
contextPrototype.lineTo = function(aX, aY) {
|
|
this.currentPath_.push({type: "lineTo", x: aX, y: aY});
|
|
this.currentX_ = aX;
|
|
this.currentY_ = aY;
|
|
};
|
|
|
|
contextPrototype.bezierCurveTo = function(aCP1x, aCP1y,
|
|
aCP2x, aCP2y,
|
|
aX, aY) {
|
|
this.currentPath_.push({type: "bezierCurveTo",
|
|
cp1x: aCP1x,
|
|
cp1y: aCP1y,
|
|
cp2x: aCP2x,
|
|
cp2y: aCP2y,
|
|
x: aX,
|
|
y: aY});
|
|
this.currentX_ = aX;
|
|
this.currentY_ = aY;
|
|
};
|
|
|
|
contextPrototype.quadraticCurveTo = function(aCPx, aCPy, aX, aY) {
|
|
// the following is lifted almost directly from
|
|
// http://developer.mozilla.org/en/docs/Canvas_tutorial:Drawing_shapes
|
|
var cp1x = this.currentX_ + 2.0 / 3.0 * (aCPx - this.currentX_);
|
|
var cp1y = this.currentY_ + 2.0 / 3.0 * (aCPy - this.currentY_);
|
|
var cp2x = cp1x + (aX - this.currentX_) / 3.0;
|
|
var cp2y = cp1y + (aY - this.currentY_) / 3.0;
|
|
this.bezierCurveTo(cp1x, cp1y, cp2x, cp2y, aX, aY);
|
|
};
|
|
|
|
contextPrototype.arc = function(aX, aY, aRadius,
|
|
aStartAngle, aEndAngle, aClockwise) {
|
|
aRadius *= Z;
|
|
var arcType = aClockwise ? "at" : "wa";
|
|
|
|
var xStart = aX + (mc(aStartAngle) * aRadius) - Z2;
|
|
var yStart = aY + (ms(aStartAngle) * aRadius) - Z2;
|
|
|
|
var xEnd = aX + (mc(aEndAngle) * aRadius) - Z2;
|
|
var yEnd = aY + (ms(aEndAngle) * aRadius) - Z2;
|
|
|
|
// IE won't render arches drawn counter clockwise if xStart == xEnd.
|
|
if (xStart == xEnd && !aClockwise) {
|
|
xStart += 0.125; // Offset xStart by 1/80 of a pixel. Use something
|
|
// that can be represented in binary
|
|
}
|
|
|
|
this.currentPath_.push({type: arcType,
|
|
x: aX,
|
|
y: aY,
|
|
radius: aRadius,
|
|
xStart: xStart,
|
|
yStart: yStart,
|
|
xEnd: xEnd,
|
|
yEnd: yEnd});
|
|
|
|
};
|
|
|
|
contextPrototype.rect = function(aX, aY, aWidth, aHeight) {
|
|
this.moveTo(aX, aY);
|
|
this.lineTo(aX + aWidth, aY);
|
|
this.lineTo(aX + aWidth, aY + aHeight);
|
|
this.lineTo(aX, aY + aHeight);
|
|
this.closePath();
|
|
};
|
|
|
|
contextPrototype.strokeRect = function(aX, aY, aWidth, aHeight) {
|
|
// Will destroy any existing path (same as FF behaviour)
|
|
this.beginPath();
|
|
this.moveTo(aX, aY);
|
|
this.lineTo(aX + aWidth, aY);
|
|
this.lineTo(aX + aWidth, aY + aHeight);
|
|
this.lineTo(aX, aY + aHeight);
|
|
this.closePath();
|
|
this.stroke();
|
|
};
|
|
|
|
contextPrototype.fillRect = function(aX, aY, aWidth, aHeight) {
|
|
// Will destroy any existing path (same as FF behaviour)
|
|
this.beginPath();
|
|
this.moveTo(aX, aY);
|
|
this.lineTo(aX + aWidth, aY);
|
|
this.lineTo(aX + aWidth, aY + aHeight);
|
|
this.lineTo(aX, aY + aHeight);
|
|
this.closePath();
|
|
this.fill();
|
|
};
|
|
|
|
contextPrototype.createLinearGradient = function(aX0, aY0, aX1, aY1) {
|
|
var gradient = new CanvasGradient_("gradient");
|
|
return gradient;
|
|
};
|
|
|
|
contextPrototype.createRadialGradient = function(aX0, aY0,
|
|
aR0, aX1,
|
|
aY1, aR1) {
|
|
var gradient = new CanvasGradient_("gradientradial");
|
|
gradient.radius1_ = aR0;
|
|
gradient.radius2_ = aR1;
|
|
gradient.focus_.x = aX0;
|
|
gradient.focus_.y = aY0;
|
|
return gradient;
|
|
};
|
|
|
|
contextPrototype.drawImage = function (image, var_args) {
|
|
var dx, dy, dw, dh, sx, sy, sw, sh;
|
|
|
|
// to find the original width we overide the width and height
|
|
var oldRuntimeWidth = image.runtimeStyle.width;
|
|
var oldRuntimeHeight = image.runtimeStyle.height;
|
|
image.runtimeStyle.width = 'auto';
|
|
image.runtimeStyle.height = 'auto';
|
|
|
|
// get the original size
|
|
var w = image.width;
|
|
var h = image.height;
|
|
|
|
// and remove overides
|
|
image.runtimeStyle.width = oldRuntimeWidth;
|
|
image.runtimeStyle.height = oldRuntimeHeight;
|
|
|
|
if (arguments.length == 3) {
|
|
dx = arguments[1];
|
|
dy = arguments[2];
|
|
sx = sy = 0;
|
|
sw = dw = w;
|
|
sh = dh = h;
|
|
} else if (arguments.length == 5) {
|
|
dx = arguments[1];
|
|
dy = arguments[2];
|
|
dw = arguments[3];
|
|
dh = arguments[4];
|
|
sx = sy = 0;
|
|
sw = w;
|
|
sh = h;
|
|
} else if (arguments.length == 9) {
|
|
sx = arguments[1];
|
|
sy = arguments[2];
|
|
sw = arguments[3];
|
|
sh = arguments[4];
|
|
dx = arguments[5];
|
|
dy = arguments[6];
|
|
dw = arguments[7];
|
|
dh = arguments[8];
|
|
} else {
|
|
throw "Invalid number of arguments";
|
|
}
|
|
|
|
var d = this.getCoords_(dx, dy);
|
|
|
|
var w2 = sw / 2;
|
|
var h2 = sh / 2;
|
|
|
|
var vmlStr = [];
|
|
|
|
var W = 10;
|
|
var H = 10;
|
|
|
|
// For some reason that I've now forgotten, using divs didn't work
|
|
vmlStr.push(' <g_vml_:group',
|
|
' coordsize="', Z * W, ',', Z * H, '"',
|
|
' coordorigin="0,0"' ,
|
|
' style="width:', W, ';height:', H, ';position:absolute;');
|
|
|
|
// If filters are necessary (rotation exists), create them
|
|
// filters are bog-slow, so only create them if abbsolutely necessary
|
|
// The following check doesn't account for skews (which don't exist
|
|
// in the canvas spec (yet) anyway.
|
|
|
|
if (this.m_[0][0] != 1 || this.m_[0][1]) {
|
|
var filter = [];
|
|
|
|
// Note the 12/21 reversal
|
|
filter.push("M11='", this.m_[0][0], "',",
|
|
"M12='", this.m_[1][0], "',",
|
|
"M21='", this.m_[0][1], "',",
|
|
"M22='", this.m_[1][1], "',",
|
|
"Dx='", mr(d.x / Z), "',",
|
|
"Dy='", mr(d.y / Z), "'");
|
|
|
|
// Bounding box calculation (need to minimize displayed area so that
|
|
// filters don't waste time on unused pixels.
|
|
var max = d;
|
|
var c2 = this.getCoords_(dx + dw, dy);
|
|
var c3 = this.getCoords_(dx, dy + dh);
|
|
var c4 = this.getCoords_(dx + dw, dy + dh);
|
|
|
|
max.x = Math.max(max.x, c2.x, c3.x, c4.x);
|
|
max.y = Math.max(max.y, c2.y, c3.y, c4.y);
|
|
|
|
vmlStr.push("padding:0 ", mr(max.x / Z), "px ", mr(max.y / Z),
|
|
"px 0;filter:progid:DXImageTransform.Microsoft.Matrix(",
|
|
filter.join(""), ", sizingmethod='clip');");
|
|
} else {
|
|
vmlStr.push("top:", mr(d.y / Z), "px;left:", mr(d.x / Z), "px;");
|
|
}
|
|
|
|
vmlStr.push(' ">' ,
|
|
'<g_vml_:image src="', image.src, '"',
|
|
' style="width:', Z * dw, ';',
|
|
' height:', Z * dh, ';"',
|
|
' cropleft="', sx / w, '"',
|
|
' croptop="', sy / h, '"',
|
|
' cropright="', (w - sx - sw) / w, '"',
|
|
' cropbottom="', (h - sy - sh) / h, '"',
|
|
' />',
|
|
'</g_vml_:group>');
|
|
|
|
this.element_.insertAdjacentHTML("BeforeEnd",
|
|
vmlStr.join(""));
|
|
};
|
|
|
|
contextPrototype.stroke = function(aFill) {
|
|
var lineStr = [];
|
|
var lineOpen = false;
|
|
var a = processStyle(aFill ? this.fillStyle : this.strokeStyle);
|
|
var color = a[0];
|
|
var opacity = a[1] * this.globalAlpha;
|
|
|
|
var W = 10;
|
|
var H = 10;
|
|
|
|
lineStr.push('<g_vml_:shape',
|
|
' fillcolor="', color, '"',
|
|
' filled="', Boolean(aFill), '"',
|
|
' style="position:absolute;width:', W, ';height:', H, ';"',
|
|
' coordorigin="0 0" coordsize="', Z * W, ' ', Z * H, '"',
|
|
' stroked="', !aFill, '"',
|
|
' strokeweight="', this.lineWidth, '"',
|
|
' strokecolor="', color, '"',
|
|
' path="');
|
|
|
|
var newSeq = false;
|
|
var min = {x: null, y: null};
|
|
var max = {x: null, y: null};
|
|
|
|
for (var i = 0; i < this.currentPath_.length; i++) {
|
|
var p = this.currentPath_[i];
|
|
|
|
if (p.type == "moveTo") {
|
|
lineStr.push(" m ");
|
|
var c = this.getCoords_(p.x, p.y);
|
|
lineStr.push(mr(c.x), ",", mr(c.y));
|
|
} else if (p.type == "lineTo") {
|
|
lineStr.push(" l ");
|
|
var c = this.getCoords_(p.x, p.y);
|
|
lineStr.push(mr(c.x), ",", mr(c.y));
|
|
} else if (p.type == "close") {
|
|
lineStr.push(" x ");
|
|
} else if (p.type == "bezierCurveTo") {
|
|
lineStr.push(" c ");
|
|
var c = this.getCoords_(p.x, p.y);
|
|
var c1 = this.getCoords_(p.cp1x, p.cp1y);
|
|
var c2 = this.getCoords_(p.cp2x, p.cp2y);
|
|
lineStr.push(mr(c1.x), ",", mr(c1.y), ",",
|
|
mr(c2.x), ",", mr(c2.y), ",",
|
|
mr(c.x), ",", mr(c.y));
|
|
} else if (p.type == "at" || p.type == "wa") {
|
|
lineStr.push(" ", p.type, " ");
|
|
var c = this.getCoords_(p.x, p.y);
|
|
var cStart = this.getCoords_(p.xStart, p.yStart);
|
|
var cEnd = this.getCoords_(p.xEnd, p.yEnd);
|
|
|
|
lineStr.push(mr(c.x - this.arcScaleX_ * p.radius), ",",
|
|
mr(c.y - this.arcScaleY_ * p.radius), " ",
|
|
mr(c.x + this.arcScaleX_ * p.radius), ",",
|
|
mr(c.y + this.arcScaleY_ * p.radius), " ",
|
|
mr(cStart.x), ",", mr(cStart.y), " ",
|
|
mr(cEnd.x), ",", mr(cEnd.y));
|
|
}
|
|
|
|
|
|
// TODO: Following is broken for curves due to
|
|
// move to proper paths.
|
|
|
|
// Figure out dimensions so we can do gradient fills
|
|
// properly
|
|
if(c) {
|
|
if (min.x == null || c.x < min.x) {
|
|
min.x = c.x;
|
|
}
|
|
if (max.x == null || c.x > max.x) {
|
|
max.x = c.x;
|
|
}
|
|
if (min.y == null || c.y < min.y) {
|
|
min.y = c.y;
|
|
}
|
|
if (max.y == null || c.y > max.y) {
|
|
max.y = c.y;
|
|
}
|
|
}
|
|
}
|
|
lineStr.push(' ">');
|
|
|
|
if (typeof this.fillStyle == "object") {
|
|
var focus = {x: "50%", y: "50%"};
|
|
var width = (max.x - min.x);
|
|
var height = (max.y - min.y);
|
|
var dimension = (width > height) ? width : height;
|
|
|
|
focus.x = mr((this.fillStyle.focus_.x / width) * 100 + 50) + "%";
|
|
focus.y = mr((this.fillStyle.focus_.y / height) * 100 + 50) + "%";
|
|
|
|
var colors = [];
|
|
|
|
// inside radius (%)
|
|
if (this.fillStyle.type_ == "gradientradial") {
|
|
var inside = (this.fillStyle.radius1_ / dimension * 100);
|
|
|
|
// percentage that outside radius exceeds inside radius
|
|
var expansion = (this.fillStyle.radius2_ / dimension * 100) - inside;
|
|
} else {
|
|
var inside = 0;
|
|
var expansion = 100;
|
|
}
|
|
|
|
var insidecolor = {offset: null, color: null};
|
|
var outsidecolor = {offset: null, color: null};
|
|
|
|
// We need to sort 'colors' by percentage, from 0 > 100 otherwise ie
|
|
// won't interpret it correctly
|
|
this.fillStyle.colors_.sort(function (cs1, cs2) {
|
|
return cs1.offset - cs2.offset;
|
|
});
|
|
|
|
for (var i = 0; i < this.fillStyle.colors_.length; i++) {
|
|
var fs = this.fillStyle.colors_[i];
|
|
|
|
colors.push( (fs.offset * expansion) + inside, "% ", fs.color, ",");
|
|
|
|
if (fs.offset > insidecolor.offset || insidecolor.offset == null) {
|
|
insidecolor.offset = fs.offset;
|
|
insidecolor.color = fs.color;
|
|
}
|
|
|
|
if (fs.offset < outsidecolor.offset || outsidecolor.offset == null) {
|
|
outsidecolor.offset = fs.offset;
|
|
outsidecolor.color = fs.color;
|
|
}
|
|
}
|
|
colors.pop();
|
|
|
|
lineStr.push('<g_vml_:fill',
|
|
' color="', outsidecolor.color, '"',
|
|
' color2="', insidecolor.color, '"',
|
|
' type="', this.fillStyle.type_, '"',
|
|
' focusposition="', focus.x, ', ', focus.y, '"',
|
|
' colors="', colors.join(""), '"',
|
|
' opacity="', opacity, '" />');
|
|
} else if (aFill) {
|
|
lineStr.push('<g_vml_:fill color="', color, '" opacity="', opacity, '" />');
|
|
} else {
|
|
lineStr.push(
|
|
'<g_vml_:stroke',
|
|
' opacity="', opacity,'"',
|
|
' joinstyle="', this.lineJoin, '"',
|
|
' miterlimit="', this.miterLimit, '"',
|
|
' endcap="', processLineCap(this.lineCap) ,'"',
|
|
' weight="', this.lineWidth, 'px"',
|
|
' color="', color,'" />'
|
|
);
|
|
}
|
|
|
|
lineStr.push("</g_vml_:shape>");
|
|
|
|
this.element_.insertAdjacentHTML("beforeEnd", lineStr.join(""));
|
|
|
|
//this.currentPath_ = [];
|
|
};
|
|
|
|
contextPrototype.fill = function() {
|
|
this.stroke(true);
|
|
};
|
|
|
|
contextPrototype.closePath = function() {
|
|
this.currentPath_.push({type: "close"});
|
|
};
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
contextPrototype.getCoords_ = function(aX, aY) {
|
|
return {
|
|
x: Z * (aX * this.m_[0][0] + aY * this.m_[1][0] + this.m_[2][0]) - Z2,
|
|
y: Z * (aX * this.m_[0][1] + aY * this.m_[1][1] + this.m_[2][1]) - Z2
|
|
}
|
|
};
|
|
|
|
contextPrototype.save = function() {
|
|
var o = {};
|
|
copyState(this, o);
|
|
this.aStack_.push(o);
|
|
this.mStack_.push(this.m_);
|
|
this.m_ = matrixMultiply(createMatrixIdentity(), this.m_);
|
|
};
|
|
|
|
contextPrototype.restore = function() {
|
|
copyState(this.aStack_.pop(), this);
|
|
this.m_ = this.mStack_.pop();
|
|
};
|
|
|
|
contextPrototype.translate = function(aX, aY) {
|
|
var m1 = [
|
|
[1, 0, 0],
|
|
[0, 1, 0],
|
|
[aX, aY, 1]
|
|
];
|
|
|
|
this.m_ = matrixMultiply(m1, this.m_);
|
|
};
|
|
|
|
contextPrototype.rotate = function(aRot) {
|
|
var c = mc(aRot);
|
|
var s = ms(aRot);
|
|
|
|
var m1 = [
|
|
[c, s, 0],
|
|
[-s, c, 0],
|
|
[0, 0, 1]
|
|
];
|
|
|
|
this.m_ = matrixMultiply(m1, this.m_);
|
|
};
|
|
|
|
contextPrototype.scale = function(aX, aY) {
|
|
this.arcScaleX_ *= aX;
|
|
this.arcScaleY_ *= aY;
|
|
var m1 = [
|
|
[aX, 0, 0],
|
|
[0, aY, 0],
|
|
[0, 0, 1]
|
|
];
|
|
|
|
this.m_ = matrixMultiply(m1, this.m_);
|
|
};
|
|
|
|
/******** STUBS ********/
|
|
contextPrototype.clip = function() {
|
|
// TODO: Implement
|
|
};
|
|
|
|
contextPrototype.arcTo = function() {
|
|
// TODO: Implement
|
|
};
|
|
|
|
contextPrototype.createPattern = function() {
|
|
return new CanvasPattern_;
|
|
};
|
|
|
|
// Gradient / Pattern Stubs
|
|
function CanvasGradient_(aType) {
|
|
this.type_ = aType;
|
|
this.radius1_ = 0;
|
|
this.radius2_ = 0;
|
|
this.colors_ = [];
|
|
this.focus_ = {x: 0, y: 0};
|
|
}
|
|
|
|
CanvasGradient_.prototype.addColorStop = function(aOffset, aColor) {
|
|
aColor = processStyle(aColor);
|
|
this.colors_.push({offset: 1-aOffset, color: aColor});
|
|
};
|
|
|
|
function CanvasPattern_() {}
|
|
|
|
// set up externs
|
|
G_vmlCanvasManager = G_vmlCanvasManager_;
|
|
CanvasRenderingContext2D = CanvasRenderingContext2D_;
|
|
CanvasGradient = CanvasGradient_;
|
|
CanvasPattern = CanvasPattern_;
|
|
|
|
})();
|
|
|
|
} // if
|
|
|
|
|
|
//loading bar progress
|
|
myBar.loaded("excanvas.js"); |