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Bug 681192. Part 6: Test that various scrolling operations inside scaled transforms don't trigger unnecessary repainting. r=matspal 

--HG--
extra : rebase_source : a72afaa7ebb5e9b59cf574cd973f966eee5c7f45
This commit is contained in:
Robert O'Callahan 2012-05-10 17:24:19 +12:00
Родитель 54c1668b64
Коммит 51418cb99e
2 изменённых файлов: 48 добавлений и 0 удалений
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1
layout/base/tests/chrome/Makefile.in
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@ -74,6 +74,7 @@ _CHROME_FILES = \
printpreview_bug396024_helper.xul \
test_printpreview_bug482976.xul \
printpreview_bug482976_helper.xul \
test_transformed_scrolling_repaints.html \
$(NULL)
libs:: $(_CHROME_FILES)

47
layout/base/tests/chrome/test_transformed_scrolling_repaints.html Normal file
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@ -0,0 +1,47 @@
<!DOCTYPE HTML>
<html>
<head>
<title>Test that scaled elements with scrolled contents don't repaint unnecessarily when we scroll inside them</title>
<script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
<script type="text/javascript" src="paint_listener.js"></script>
<link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
</head>
<!-- Need a timeout here to allow paint unsuppression before we start the test -->
<body onload="setTimeout(startTest,0)">
<div id="t" style="-moz-transform: scale(1.2, 1.2); -moz-transform-origin:top left; width:200px; height:100px; background:yellow; overflow:hidden">
<div style="height:40px;">Hello</div>
<div id="e" style="height:30px; background:lime">Kitty</div>
<div style="height:300px; background:yellow">Kitty</div>
</div>
<pre id="test">
<script type="application/javascript">
SimpleTest.waitForExplicitFinish();
var t = document.getElementById("t");
var e = document.getElementById("e");
var utils = window.QueryInterface(Components.interfaces.nsIInterfaceRequestor).
getInterface(Components.interfaces.nsIDOMWindowUtils);
function startTest() {
// Do a couple of scrolls to ensure we've triggered activity heuristics.
waitForAllPaintsFlushed(function () {
t.scrollTop = 5;
waitForAllPaintsFlushed(function () {
t.scrollTop = 10;
waitForAllPaintsFlushed(function () {
// Clear paint state now and scroll again.
utils.checkAndClearPaintedState(e);
t.scrollTop = 33;
waitForAllPaintsFlushed(function () {
var painted = utils.checkAndClearPaintedState(e);
is(painted, false, "Fully-visible scrolled element should not have been painted");
SimpleTest.finish();
});
});
});
});
}
</script>
</pre>
</body>
</html>