зеркало из https://github.com/mozilla/gecko-dev.git
88 строки
2.7 KiB
HTML
88 строки
2.7 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<head>
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<title>Tests for MozAfterPaint</title>
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<script 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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</head>
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<body>
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<p id="display">
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<div width="100" height="100" id="p" style="background-color: rgb(0,0,0)"/>
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</p>
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<div id="content" style="display: none">
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</div>
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<pre id="test">
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<script class="testbody" type="text/javascript">
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SimpleTest.waitForExplicitFinish();
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SimpleTest.requestFlakyTimeout("untriaged");
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var initialPaintCount, afterPaintCount;
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var color = 0;
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function onAfterPaint () {
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afterPaintCount += 1;
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}
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function startTest() {
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setTimeout(function () {
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afterPaintCount = 0;
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initialPaintCount = SpecialPowers.DOMWindowUtils.paintCount;
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window.addEventListener("MozAfterPaint", onAfterPaint, true);
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doBackgroundFlicker();
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}, 500);
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}
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document.addEventListener("DOMContentLoaded", startTest, true);
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// Unfortunately we cannot reliably assert that mozPaintCount and afterPaintCount increment perfectly
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// in sync, because they can diverge in the presence of OS-triggered paints or system load.
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// Instead, wait for a minimum number of afterPaint events to at least ensure that they are being fired.
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const minimumAfterPaintsToPass = 10;
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function doElementFlicker() {
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ok(true, "Element color iteration " + color +
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", afterpaint count: " + afterPaintCount +
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", mozpaint count: " + SpecialPowers.DOMWindowUtils.paintCount);
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if (afterPaintCount >= minimumAfterPaintsToPass) {
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ok(true, "afterPaintCount incremented enough from color changes.");
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SimpleTest.finish();
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return;
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}
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color = (color + 1) % 256;
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document.getElementById("p").style.backgroundColor = "rgb(" + color + "," + color + "," + color + ")";
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setTimeout(doElementFlicker, 0);
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}
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function doBackgroundFlicker() {
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ok(true, "Background color iteration " + color +
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", afterpaint count: " + afterPaintCount +
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", mozpaint count: " + SpecialPowers.DOMWindowUtils.paintCount);
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if (afterPaintCount >= minimumAfterPaintsToPass) {
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ok(true, "afterPaintCount incremented enough from background color changes.");
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afterPaintCount = 0;
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initialPaintCount = SpecialPowers.DOMWindowUtils.paintCount;
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doElementFlicker();
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return;
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}
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color = (color + 1) % 256;
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document.body.style.backgroundColor = "rgb(" + color + "," + color + "," + color + ")";
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setTimeout(doBackgroundFlicker, 0);
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}
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</script>
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</pre>
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<div style="height:4000px"></div>
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<a id="first" href="http://www.mozilla.org/">first<br>link</a>
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<a id="second" href="http://www.mozilla.org/">second link</a>
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<a id="third" href="http://www.mozilla.org/">third<br>link</a>
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<div style="height:4000px"></div>
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</body>
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</html>
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