зеркало из https://github.com/mozilla/gecko-dev.git
58 строки
1.6 KiB
HTML
58 строки
1.6 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<head>
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<meta charset="utf-8">
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<title>Test for style change hint optimizations</title>
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<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
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<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
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<script type="application/javascript">
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SimpleTest.waitForExplicitFinish();
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function runTests() {
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/** Test for Bug 1251075 **/
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function test_bug1251075_div(id) {
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var utils = SpecialPowers.DOMWindowUtils;
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var div = document.getElementById(id);
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div.style.display = "";
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var description = div.style.cssText;
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div.firstElementChild.offsetTop;
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var constructedBefore = utils.framesConstructed;
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div.style.transform = "translateX(10px)";
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div.firstElementChild.offsetTop;
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is(utils.framesConstructed, constructedBefore,
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"adding a transform style to an element with " + description +
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" should not cause frame reconstruction even when the element " +
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"has absolutely positioned descendants");
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div.style.display = "none";
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}
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test_bug1251075_div("bug1251075_a");
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test_bug1251075_div("bug1251075_b");
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SimpleTest.finish();
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}
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</script>
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</head>
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<body onload="runTests()">
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<div id="bug1251075_a" style="will-change: transform; display:none">
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<div style="position: absolute; top: 0; left: 0;"></div>
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<div style="position: fixed; top: 0; left: 0;"></div>
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</div>
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<div id="bug1251075_b" style="filter: blur(3px); display:none">
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<div style="position: absolute; top: 0; left: 0;"></div>
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<div style="position: fixed; top: 0; left: 0;"></div>
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</div>
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<pre id="test">
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</pre>
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</body>
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</html>
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