layout/base/tests/chrome/transformed_scrolling_repaints_3_window.html@6474c204b198
layout/base/tests/chrome/transformed_scrolling_repaints_3_window.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</title>
5 <script type="text/javascript" src="chrome://mochikit/content/tests/SimpleTest/paint_listener.js"></script>
6 </head>
7 <!-- Need a timeout here to allow paint unsuppression before we start the test -->
8 <body onload="setTimeout(startTest,0)" style="background:white;">
9 <iframe id="t" style="-moz-transform: scale(0.48979); -moz-transform-origin:top left; width:500px; height:300px;"
10 src="data:text/html,
11 <body style='background:yellow;'>
12 <p>My graduate adviser was the most patient, understanding, and helpful
13 person I've ever had the joy of dealing with. That doesn't change that
14 there are some real dicks out there, and some of them happen to be
15 scientists.
16 <p id='e'>My graduate adviser was the most patient, understanding, and helpful
17 person I've ever had the joy of dealing with. That doesn't change that
18 there are some real dicks out there, and some of them happen to be
19 scientists.
20 <p>My graduate adviser was the most patient, understanding, and helpful
21 person I've ever had the joy of dealing with. That doesn't change that
22 there are some real dicks out there, and some of them happen to be
23 scientists.
24 <p>My graduate adviser was the most patient, understanding, and helpful
25 person I've ever had the joy of dealing with. That doesn't change that
26 there are some real dicks out there, and some of them happen to be
27 scientists.
28 <p>My graduate adviser was the most patient, understanding, and helpful
29 person I've ever had the joy of dealing with. That doesn't change that
30 there are some real dicks out there, and some of them happen to be
31 scientists.
32 <p>My graduate adviser was the most patient, understanding, and helpful
33 person I've ever had the joy of dealing with. That doesn't change that
34 there are some real dicks out there, and some of them happen to be
35 scientists.
36 </body>"></iframe>
37 <pre id="test">
38 <script type="application/javascript">
39 var SimpleTest = window.opener.wrappedJSObject.SimpleTest;
40 var SpecialPowers = window.opener.wrappedJSObject.SpecialPowers;
41 var is = window.opener.wrappedJSObject.is;
43 var smoothScrollPref = "general.smoothScroll";
44 SpecialPowers.setBoolPref(smoothScrollPref, false);
46 function startTest() {
47 var t = document.getElementById("t");
48 var e = t.contentDocument.getElementById("e");
49 t.contentWindow.scrollTo(0,0);
50 var utils = window.QueryInterface(Components.interfaces.nsIInterfaceRequestor).
51 getInterface(Components.interfaces.nsIDOMWindowUtils);
52 var iterations = 0;
54 function nextIteration() {
55 var painted = utils.checkAndClearPaintedState(e);
56 is(painted, false, "Fully-visible scrolled element should not have been painted");
57 if (++iterations == 10) {
58 SpecialPowers.clearUserPref(smoothScrollPref);
59 SimpleTest.finish();
60 window.close();
61 } else {
62 t.contentWindow.scrollByLines(1);
63 waitForAllPaintsFlushed(nextIteration);
64 }
65 }
67 // Do a couple of scrolls to ensure we've triggered activity heuristics.
68 waitForAllPaintsFlushed(function () {
69 t.contentWindow.scrollByLines(1);
70 waitForAllPaintsFlushed(function () {
71 t.contentWindow.scrollByLines(1);
72 waitForAllPaintsFlushed(function () {
73 // Clear paint state now and scroll again.
74 utils.checkAndClearPaintedState(e);
75 t.contentWindow.scrollByLines(1);
76 waitForAllPaintsFlushed(nextIteration);
77 });
78 });
79 });
80 }
81 </script>
82 </pre>
83 </body>
84 </html>
