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Bug 516645: Preload border-image images to speed up the rendering [r=gavin.sharp]

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This commit is contained in:
Mark Finkle 2009-10-29 18:58:40 -04:00
parent 429f82f372
commit 0d23ff3652
1 changed files with 27 additions and 3 deletions
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30
mobile/chrome/content/browser.js
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@ -343,8 +343,6 @@ var Browser = {
startup: function() {
var self = this;
//dump("begin startup\n");
let container = document.getElementById("tile-container");
let bv = this._browserView = new BrowserView(container, Browser.getVisibleRect);
@ -573,7 +571,8 @@ var Browser = {
gPrefService.clearUserPref("temporary.disabledFlash");
}
//dump("end startup\n");
// Force commonly used border-images into the image cache
ImagePreloader.cache();
},
shutdown: function() {
@ -2688,3 +2687,28 @@ Tab.prototype = {
return "[Tab " + (this._browser ? this._browser.contentDocument.location.toString() : "(no browser)") + "]";
}
};
var ImagePreloader = {
cache: function ip_cache() {
// Preload images used in border-image CSS
let images = ["button-active", "button-default",
"buttondark-active", "buttondark-default",
"toggleon-active", "toggleon-inactive",
"toggleoff-active", "toggleoff-inactive",
"toggleleft-active", "toggleleft-inactive",
"togglemiddle-active", "togglemiddle-inactive",
"toggleright-active", "toggleright-inactive",
"toggleboth-active", "toggleboth-inactive",
"toggledarkleft-active", "toggledarkleft-inactive",
"toggledarkmiddle-active", "toggledarkmiddle-inactive",
"toggledarkright-active", "toggledarkright-inactive",
"toggledarkboth-active", "toggledarkboth-inactive",
"toolbarbutton-active", "toolbarbutton-default"];
let size = screen.width > 400 ? "-64" : "-36";
for (let i = 0; i < images.length; i++) {
let image = new Image();
image.src = "chrome://browser/skin/images/" + images[i] + size + ".png";
}
}
}