| Index: LayoutTests/compositing/overflow/out-of-flow-pos-descendants-should-affect-all-ancestors.html
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| diff --git a/LayoutTests/compositing/overflow/out-of-flow-pos-descendants-should-affect-all-ancestors.html b/LayoutTests/compositing/overflow/out-of-flow-pos-descendants-should-affect-all-ancestors.html
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| new file mode 100644
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| index 0000000000000000000000000000000000000000..6f0f434e1a1bb9488a4c8a51c282ce3f848903f1
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| --- /dev/null
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| +++ b/LayoutTests/compositing/overflow/out-of-flow-pos-descendants-should-affect-all-ancestors.html
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| @@ -0,0 +1,102 @@
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| +<!DOCTYPE html>
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| +<html>
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| + <head>
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| + <style>
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| + div {
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| + height: 500px;
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| + width: 500px;
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| + padding: 3px;
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| + border-style: solid;
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| + border-color: black;
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| + border-width: 1px;
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| + overflow: scroll;
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| + }
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| +
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| + .filler {
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| + position: relative;
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| + top: 1000px;
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| + }
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| +
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| + button {
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| + display: none;
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| + }
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| + </style>
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| + <script>
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| + // This test ensures that when an element's style changes in such a
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| + // way that it remains out-of-flow positioned, but its containing
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| + // block changes, we correctly update elements' has-unclipped-
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| + // descendant property. Since no layers will opt out due to stacking
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| + // issues, we can judge whether we're setting this state correctly
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| + // by which layers opt-in.
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| + if (window.internals)
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| + window.internals.settings.setAcceleratedCompositingForOverflowScrollEnabled(true);
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| +
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| + if (window.testRunner)
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| + window.testRunner.dumpAsText();
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| +
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| + function doTest()
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| + {
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| + if (!window.internals) {
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| + document.getElementById('toggle1').style.display = 'block';
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| + document.getElementById('toggle2').style.display = 'block';
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| + document.body.offsetTop;
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| + return;
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| + }
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| +
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| + var result = window.internals.layerTreeAsText(document);
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| + var oofp1 = document.getElementById('oofp1');
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| + var oofp2 = document.getElementById('oofp2');
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| +
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| + oofp1.style.position = 'fixed';
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| + document.body.offsetTop;
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| + result += window.internals.layerTreeAsText(document);
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| +
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| + oofp2.style.position = 'fixed';
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| + document.body.offsetTop;
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| + result += window.internals.layerTreeAsText(document);
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| +
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| + oofp1.style.position = 'absolute';
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| + document.body.offsetTop;
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| + result += window.internals.layerTreeAsText(document);
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| +
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| + oofp2.style.position = 'absolute';
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| + document.body.offsetTop;
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| + result += window.internals.layerTreeAsText(document);
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| +
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| + document.getElementById('console').innerHTML = result;
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| + }
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| +
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| + window.addEventListener('load', doTest, false);
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| + </script>
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| + </head>
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| + <body>
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| + <div>
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| + <div style="width: 450px; height: 450px">
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| + <div style="width: 400px; height: 400px">
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| + <div style="width: 350px; height: 350px">
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| + <div style="position: relative; width: 300px; height: 150px">
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| + <div id="oofp1" style="position: absolute; background-color: red; height: 50px; width: 50px; left: 50px; overflow: hidden">
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| + </div>
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| + <div class="filler"></div>
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| + </div>
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| + <div style="position: relative; width: 300px; height: 150px">
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| + <div style="width: 250px; height: 100px">
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| + <div id="oofp2" style="position: absolute; background-color: red; height: 50px; width: 50px; left: 50px; overflow: hidden"></div>
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| + <div class="filler"></div>
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| + </div>
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| + <div class="filler"></div>
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| + </div>
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| + <div class="filler"></div>
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| + </div>
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| + <div class="filler"></div>
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| + </div>
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| + <div class="filler"></div>
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| + </div>
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| + <div class="filler"></div>
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| + </div>
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| + <pre id='console'>This test requires window.internals</pre>
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| +
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| + <button id='toggle1' onClick="document.getElementById('oofp1').style.position = document.getElementById('oofp1').style.position === 'fixed' ? 'absolute' : 'fixed'">toggle 1</button>
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| + <button id='toggle2' onClick="document.getElementById('oofp2').style.position = document.getElementById('oofp2').style.position === 'fixed' ? 'absolute' : 'fixed'">toggle 2</button>
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| + </body>
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| +</html>
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|
|
Chromium Code Reviews
Issue 14863002:
Only update composited-scrolling state once after layout. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk