layout/base/tests/chrome/test_prerendered_transforms.html@6474c204b198
layout/base/tests/chrome/test_prerendered_transforms.html
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 <!DOCTYPE HTML>
2 <html>
3 <head>
4 <title>Test that active transformed elements coming into view are prerendered so we don't have to redraw constantly</title>
5 <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
6 <script type="text/javascript" src="chrome://mochikit/content/tests/SimpleTest/paint_listener.js"></script>
7 <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
8 </head>
9 <body onload="startTest()">
10 <div>
11 <div id="t" style="position:absolute; left:0; top:500px; -moz-transform: translatex(-100px); width:200px; height:100px; background:yellow;">
12 <div style="text-align:right">Hello</div>
13 <div style="text-align:left">Kitty</div>
14 </div>
15 </div>
16 <pre id="test">
17 <script type="application/javascript">
18 SimpleTest.waitForExplicitFinish();
20 var t = document.getElementById("t");
21 var utils = window.QueryInterface(Components.interfaces.nsIInterfaceRequestor).
22 getInterface(Components.interfaces.nsIDOMWindowUtils);
24 function startTest() {
25 // Do a couple of transform changes to ensure we've triggered activity heuristics
26 waitForAllPaintsFlushed(function () {
27 t.style.MozTransform = "translatex(-75px)";
28 waitForAllPaintsFlushed(function () {
29 t.style.MozTransform = "translatex(-50px)";
30 waitForAllPaintsFlushed(function () {
31 // Clear paint state now and move again.
32 utils.checkAndClearPaintedState(t);
33 // Don't move to 0 since that might trigger some special case that turns off transforms.
34 t.style.MozTransform = "translatex(-1px)";
35 waitForAllPaintsFlushed(function () {
36 var painted = utils.checkAndClearPaintedState(t);
37 is(painted, false, "Transformed element should not have been painted");
38 SimpleTest.finish();
39 });
40 });
41 });
42 });
43 }
44 </script>
45 </pre>
46 </body>
47 </html>
