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incorporating the animated gif hack

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This commit is contained in:
Danny Yoo 2011-08-19 16:32:55 -04:00
parent 177b94bd98
commit 620ffdbcd2
1 changed files with 17 additions and 1 deletions
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18
image/private/kernel.js
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@ -275,6 +275,10 @@ var FileImage = function(src, rawImage) {
var self = this;
this.src = src;
this.isLoaded = false;
// animationHack: see installHackToSupportAnimatedGifs() for details.
this.animationHackImg = undefined;
if (rawImage && rawImage.complete) {
this.img = rawImage;
this.isLoaded = true;
@ -321,7 +325,19 @@ FileImage.installBrokenImage = function(path) {
FileImage.prototype.render = function(ctx, x, y) {
ctx.drawImage(this.img, x, y);
this.installHackToSupportAnimatedGifs();
ctx.drawImage(this.animationHackImg, x, y);
};
// The following is a hack that we use to allow animated gifs to show
// as animating on the canvas.
FileImage.prototype.installHackToSupportAnimatedGifs = function() {
if (this.animationHackImg) { return; }
this.animationHackImg = this.img.cloneNode(true);
document.body.appendChild(this.animationHackImg);
this.animationHackImg.width = 0;
this.animationHackImg.height = 0;
};