2011-01-31 18:41:58 -08:00
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<!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 type="text/javascript" src="/MochiKit/packed.js"></script>
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<script type="text/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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</head>
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<body>
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<p id="display">
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<embed type="application/x-test" width="100" height="100" id="p"
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drawmode="solid" color="FF00FF00"></embed>
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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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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 = window.mozPaintCount;
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window.addEventListener("MozAfterPaint", onAfterPaint, true);
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doBackgroundFlicker();
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2011-02-03 22:12:06 -08:00
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}, 500);
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2011-01-31 18:41:58 -08:00
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}
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document.addEventListener("DOMContentLoaded", startTest, true);
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2011-02-03 22:12:06 -08:00
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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, we wait for mozPaintCount to increase by a set amount, and then assert that we got a
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// minimum number of MozAfterPaint events. This number needs to be high enough to ensure that this test
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// will fail if empty transactions are not triggering MozAfterPaint, but low enough to allow the test to
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// pass even if the operating system triggers extra repaints or the browser is running slowly.
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// If this test still fails occasionally, examine the output to see whether minimumAfterPaints needs to be
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// adjusted down or whether you are dealing with a different issue.
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const mozPaintsToWait = 50;
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const minimumAfterPaintsToPass = 37;
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2011-01-31 18:41:58 -08:00
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function doPluginFlicker() {
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ok(true, "Plugin color iteration " + color +
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", afterpaint count: " + afterPaintCount +
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", mozpaint count: " + window.mozPaintCount);
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2011-02-03 22:12:06 -08:00
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var mozPaints = (window.mozPaintCount - initialPaintCount);
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if (mozPaints >= mozPaintsToWait) {
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ok(true, "mozPaintCount incremented enough from plugin color changes.");
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ok(afterPaintCount >= minimumAfterPaintsToPass, "Got MozAfterPaint event " + afterPaintCount + " time(s).");
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2011-01-31 18:41:58 -08:00
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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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var str = color.toString(16);
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if (str.length < 2) {
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str = "0" + str;
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}
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str = "FF" + str + str + str;
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document.getElementById("p").setColor(str);
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setTimeout(doPluginFlicker, 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: " + window.mozPaintCount);
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2011-02-03 22:12:06 -08:00
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var mozPaints = (window.mozPaintCount - initialPaintCount);
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if (mozPaints >= mozPaintsToWait) {
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ok(true, "mozPaintCount incremented enough from background color changes.");
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ok(afterPaintCount >= minimumAfterPaintsToPass, "Got MozAfterPaint event " + afterPaintCount + " time(s).");
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2011-01-31 18:41:58 -08:00
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afterPaintCount = 0;
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initialPaintCount = window.mozPaintCount;
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doPluginFlicker();
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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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