| Index: LayoutTests/compositing/overflow/ignore-main-thread-scroll-reasons-when-main-frame-not-scrollable.html
|
| diff --git a/LayoutTests/compositing/overflow/ignore-main-thread-scroll-reasons-when-main-frame-not-scrollable.html b/LayoutTests/compositing/overflow/ignore-main-thread-scroll-reasons-when-main-frame-not-scrollable.html
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..cb1b6936a9937e91f2cde5b1803086a0b7b2a0f0
|
| --- /dev/null
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| +++ b/LayoutTests/compositing/overflow/ignore-main-thread-scroll-reasons-when-main-frame-not-scrollable.html
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| @@ -0,0 +1,112 @@
|
| +<!DOCTYPE html>
|
| +<html>
|
| +<head>
|
| +<style>
|
| +.non-layer-viewport-constrained {
|
| + position: fixed;
|
| +}
|
| +
|
| +.box {
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| + width: 50px;
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| + height: 50px;
|
| +}
|
| +
|
| +.container {
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| + overflow: scroll;
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| + border: 1px solid black;
|
| +}
|
| +
|
| +.container-element {
|
| + position: relative;
|
| + background-color: blue;
|
| + margin: 10px;
|
| +}
|
| +
|
| +#sibling {
|
| + top: 220px;
|
| + left: 10px;
|
| + background-color: green;
|
| +}
|
| +
|
| +#parent {
|
| + position: absolute;
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| + left: 10px;
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| + top: 10px;
|
| + width: 200px;
|
| + height: 200px;
|
| +}
|
| +
|
| +#description {
|
| + position: absolute;
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| + top: 300px;
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| + left: 10px;
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| +}
|
| +
|
| +#console {
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| + position: absolute;
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| + top: 290px;
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| + left: 10px;
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| +}
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| +
|
| +</style>
|
| +<script src="../../fast/js/resources/js-test-pre.js"></script>
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| +<script>
|
| +if (window.testRunner) {
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| + // Our fixed position element must not be composited; this is a trigger for
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| + // forcing main thread compositing.
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| + window.internals.settings.setForceCompositingMode(true);
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| + window.internals.settings.setAcceleratedCompositingForFixedPositionEnabled(false);
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| + window.internals.settings.setAcceleratedCompositingForOverflowScrollEnabled(true);
|
| +}
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| +
|
| +// (Barely) modified version of shouldBeUndefined from js-test-pre.js.
|
| +function isUndefined(value)
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| +{
|
| + var exception;
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| + var _av;
|
| + try {
|
| + _av = eval(value);
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| + } catch (e) {
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| + exception = e;
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| + }
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| +
|
| + if (exception)
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| + return false;
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| +
|
| + if (typeof _av == "undefined")
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| + return true;
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| +
|
| + return false;
|
| +}
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| +
|
| +function runTest() {
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| + if (window.internals) {
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| + var reasons = internals.mainThreadScrollingReasons(document);
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| + if (isUndefined(reasons))
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| + testPassed("Main thread scrolling reasons were undefined.");
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| + else
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| + testFailed("Main thread scrolling reasons should have been undefined. " +
|
| + "Instead, they were '" + reasons + "'.");
|
| + } else {
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| + debug("This test requires window.internals.");
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| + description("This test ensures that when the main frame cannot be " +
|
| + "scrolled, we ignore reasons for scrolling on the main " +
|
| + "thread that only matter when the main frame scrolls");
|
| + }
|
| +}
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| +
|
| +window.onload = runTest;
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| +</script>
|
| +<script src="../../fast/js/resources/js-test-pre.js"></script>
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| +</head>
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| +<body>
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| + <div class="non-layer-viewport-constrained box" id="sibling"></div>
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| + <div class="container" id="parent">
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| + <div class="box container-element"></div>
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| + <div class="box container-element"></div>
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| + <div class="box container-element"></div>
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| + <div class="box container-element"></div>
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| + <div class="box container-element"></div>
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| + </div>
|
| +</body>
|
| +</html>
|
|
|
Chromium Code Reviews
Issue 22694003:
Ignore should-scroll-on-main-thread if main frame is not scrollable (Closed)
Base URL: svn://svn.chromium.org/blink/trunk