| 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
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| new file mode 100644
|
| index 0000000000000000000000000000000000000000..8e85e587cbc31ad5d0625c9cd141d59695eb44aa
|
| --- /dev/null
|
| +++ b/LayoutTests/compositing/overflow/ignore-main-thread-scroll-reasons-when-main-frame-not-scrollable.html
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| @@ -0,0 +1,117 @@
|
| +<!DOCTYPE html>
|
| +<html>
|
| +<head>
|
| +<style>
|
| +.non-layer-viewport-constrained {
|
| + position: fixed;
|
| +}
|
| +
|
| +.box {
|
| + width: 50px;
|
| + height: 50px;
|
| +}
|
| +
|
| +.container {
|
| + overflow: scroll;
|
| + border: 1px solid black;
|
| +}
|
| +
|
| +.container-element {
|
| + position: relative;
|
| + background-color: blue;
|
| + margin: 10px;
|
| +}
|
| +
|
| +#sibling {
|
| + top: 220px;
|
| + left: 10px;
|
| + background-color: green;
|
| +}
|
| +
|
| +#parent {
|
| + position: absolute;
|
| + left: 10px;
|
| + top: 10px;
|
| + width: 200px;
|
| + height: 200px;
|
| +}
|
| +
|
| +#description {
|
| + position: absolute;
|
| + top: 300px;
|
| + left: 10px;
|
| +}
|
| +
|
| +#console {
|
| + position: absolute;
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| + top: 290px;
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| + left: 10px;
|
| +}
|
| +
|
| +</style>
|
| +<script src="../../resources/js-test.js"></script>
|
| +<script>
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| +if (window.internals) {
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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);
|
| +}
|
| +
|
| +window.jsTestIsAsync = true;
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| +
|
| +function shouldIgnore() {
|
| + if (window.internals) {
|
| + var reasons = internals.mainThreadScrollingReasons(document);
|
| + if (reasons === '')
|
| + testPassed("No main thread scrolling reasons.");
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| + else
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| + testFailed("Should have found no main thread scrolling reasons. " +
|
| + "Instead, they were '" + reasons + "'.");
|
| + } else {
|
| + debug("This test requires window.internals.");
|
| + 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");
|
| + }
|
| +}
|
| +
|
| +function shouldNotIgnore() {
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| + document.body.style.height = "3000px";
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| + document.body.offsetTop;
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| +
|
| + if (window.internals) {
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| + var reasons = internals.mainThreadScrollingReasons(document);
|
| + if (reasons === '')
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| + testFailed("Should have found main thread scrolling reasons, but didn't.");
|
| + else
|
| + testPassed("Found main thread scrolling reasons: " + reasons + ".");
|
| + } else {
|
| + debug("This test requires window.internals.");
|
| + 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");
|
| + }
|
| +}
|
| +
|
| +function runTests() {
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| + shouldIgnore();
|
| + shouldNotIgnore();
|
| + finishJSTest();
|
| +}
|
| +
|
| +window.onload = runTests;
|
| +</script>
|
| +</head>
|
| +<body>
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| + <div class="non-layer-viewport-constrained box" id="sibling"></div>
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| + <div class="container" id="parent">
|
| + <div class="box container-element"></div>
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| + <div class="box container-element"></div>
|
| + <div class="box container-element"></div>
|
| + <div class="box container-element"></div>
|
| + <div class="box container-element"></div>
|
| + </div>
|
| +</body>
|
| +</html>
|
|
|
Chromium Code Reviews
Issue 85763003:
Ignore should-scroll-on-main-thread if main frame is not scrollable (Closed)
Base URL: svn://svn.chromium.org/blink/trunk