forked from mirrors/gecko-dev
2273097f9e
In some cases (in this scenario, with a RTL XUL scrollframe), the scrollframe can have a nonzero scroll position upon construction or reconstruction, without having executed the scrolling code in ScrollFrameHelper::RestoreState or ScrollFrameHelper::ScrollToRestoredPosition. In such cases APZ is not properly notified of the scroll position, and it can get into a state where it is out of sync with the main thread scroll position (until a subsequent scroll). To correct this, we replace the ScrollPositionUpdate that is created during scrollframe construction with a new ScrollPositionUpdate that holds the correct scroll position, so that APZ is properly notified of the scroll position. Differential Revision: https://phabricator.services.mozilla.com/D90674
103 lines
3.6 KiB
HTML
103 lines
3.6 KiB
HTML
<!-- Any copyright is dedicated to the Public Domain.
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- http://creativecommons.org/publicdomain/zero/1.0/ -->
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<!DOCTYPE HTML>
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<html class="reftest-wait"><head>
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
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<title>Testcase for bug 672944</title>
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<style type="text/css">
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@font-face {
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font-family: DejaVuSansMono;
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src: url(../fonts/DejaVuSansMono.woff),url(DejaVuSansMono.woff);
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}
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html,body {
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color:black; background-color:white; font-size:16px; padding:0; margin:0; font-family:DejaVuSansMono;
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}
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.bacon {
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white-space: nowrap;
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text-overflow: ellipsis ellipsis;
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overflow: hidden;
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width: 30ch;
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display: -moz-box;
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background: lime;
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margin-bottom: 1em;
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}
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.auto {
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overflow-x: auto;
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padding-bottom: 2ch;
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width: 29.5ch;
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text-overflow: "" "";
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}
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.scroll {
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overflow: auto;
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padding: 2ch;
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border: 3px solid black;
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text-overflow: "" "";
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}
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.scroll2 {
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overflow: auto;
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padding: 3ch;
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text-overflow: "" "";
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}
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.scroll3 {
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overflow: auto;
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padding: 2ch;
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text-indent: -3ch;
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text-overflow: "" "";
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}
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.scroll4 {
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overflow: auto;
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padding: 2ch 0.2ch;
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text-overflow: "" "";
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}
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span { background-color:white; }
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#block-hover {
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position:fixed;
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top:0;left:0;width:100%;height:100%;
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}
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</style>
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<script type="text/javascript">
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function init() {
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// The behaviour of this test may be subtly different when this code runs
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// before the first paint vs after the first paint. If you encounter
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// intermittent failures in this reftest, you might have luck turning it into
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// a reliable failure by wrapping this function body in a
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// requestAnimationFrame callback to force it to run after the first paint.
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// Alternatively you might need to force it to run before the first paint,
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// perhaps by running it inline (not as an onload handler) or something.
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// workaround bug 936936
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document.body.style.display="block";
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document.getElementById('rtl_auto').scrollLeft=999999;
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document.documentElement.removeAttribute('class');
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}
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</script>
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</head>
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<body onload="init();" style="display: inline;">
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<div style="float:right;" dir="rtl">
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<div class="bacon"><span>1Beef hamburger bacon tri-tip, jowl biltong tail ribeye ham</span></div><br>
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<div id="rtl_auto" class="bacon auto"><span>2Beef hamburger bacon tri-tipJOWLBILTONG tail ribeye ham</span></div><br>
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<div class="bacon scroll"><span>3Beef hamburger bacon tri-tipJOWLBILTONG tail ribeye ham</span></div><br>
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<div class="bacon scroll2"><span>4Beef hamburger bacon tri-tipJOWLBILTONG tail ribeye ham</span></div><br>
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<div class="bacon scroll3"><span>5Beef hamburger bacon tri-tipJOWLBILTONG tail ribeye ham</span></div><br>
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<div class="bacon scroll4"><span>6Beef hamburger bacon tri-tipJOWLBILTONG tail ribeye ham</span></div><br>
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</div>
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<div>
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<div class="bacon"><span>1Beef hamburger bacon tri-tip, jowl biltong tail ribeye ham</span></div><br>
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<div class="bacon auto"><span>2Beef hamburger bacon tri-tipJOWLBILTONG tail ribeye ham</span></div><br>
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<div class="bacon scroll"><span>3Beef hamburger bacon tri-tipJOWLBILTONG tail ribeye ham</span></div><br>
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<div class="bacon scroll2"><span>4Beef hamburger bacon tri-tipJOWLBILTONG tail ribeye ham</span></div><br>
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<div class="bacon scroll3"><span>5Beef hamburger bacon tri-tipJOWLBILTONG tail ribeye ham</span></div><br>
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<div class="bacon scroll4"><span>6Beef hamburger bacon tri-tipJOWLBILTONG tail ribeye ham</span></div><br>
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</div>
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<div id="block-hover"></div>
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</body>
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</html>
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