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