layout/base/tests/chrome/test_transformed_scrolling_repaints_2.html@6474c204b198
layout/base/tests/chrome/test_transformed_scrolling_repaints_2.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 scaled elements with scrolled contents don't repaint unnecessarily when we scroll inside them (1.1 scale)</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 <!-- Need a timeout here to allow paint unsuppression before we start the test -->
10 <body onload="setTimeout(startTest,0)">
11 <div id="t" style="-moz-transform: scale(1.1, 1.1); -moz-transform-origin:top left; width:200px; height:100px; background:yellow; overflow:hidden">
12 <div style="height:40px;"></div>
13 <div id="e" style="height:30px; background:lime"></div>
14 <div style="height:300px; background:yellow"></div>
15 </div>
16 <pre id="test">
17 <script type="application/javascript">
18 SimpleTest.waitForExplicitFinish();
20 var t = document.getElementById("t");
21 var e = document.getElementById("e");
22 var utils = window.QueryInterface(Components.interfaces.nsIInterfaceRequestor).
23 getInterface(Components.interfaces.nsIDOMWindowUtils);
25 function startTest() {
26 // Do a couple of scrolls to ensure we've triggered activity heuristics
27 waitForAllPaintsFlushed(function () {
28 t.scrollTop = 5;
29 waitForAllPaintsFlushed(function () {
30 t.scrollTop = 10;
31 waitForAllPaintsFlushed(function () {
32 // Clear paint state now and scroll again.
33 utils.checkAndClearPaintedState(e);
34 t.scrollTop = 20;
35 waitForAllPaintsFlushed(function () {
36 var painted = utils.checkAndClearPaintedState(e);
37 is(painted, false, "Fully-visible scrolled element should not have been painted");
38 SimpleTest.finish();
39 });
40 });
41 });
42 });
43 }
44 </script>
45 </pre>
46 </body>
47 </html>
