79 lines
1.5 KiB
HTML
79 lines
1.5 KiB
HTML
<!doctype html>
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<html>
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<head>
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<style>
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#box {
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position: absolute;
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top: 100px;
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left: 100px;
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width: 100px;
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height: 100px;
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background-color: silver;
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}
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.dot {
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position: absolute;
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top: 0;
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left: 0;
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height: 4px;
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width: 4px;
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background-color: silver;
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}
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#box.animating {
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animation: move 1s linear;
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}
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@keyframes move {
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from { transform: translate3d(100px, 2000px, 0); }
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to { transform: translate3d(100px, 2100px, 0); }
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}
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</style>
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<script src="../resources/compositing-test-utils.js"></script>
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<script>
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if (window.testRunner) {
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testRunner.dumpAsText();
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testRunner.waitUntilDone();
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}
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function dumpLayerTree()
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{
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if (!window.internals)
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return;
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var out = document.getElementById('out');
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out.innerText = layerTreeWithoutTransforms(internals.LAYER_TREE_INCLUDES_BACKING_STORE_ATTACHED);
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}
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function dumpLayersSoon()
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{
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setTimeout(function() {
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dumpLayerTree();
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if (window.testRunner)
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testRunner.notifyDone();
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}, 0);
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}
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function runTest()
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{
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makeDots(5, 5, 60);
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let box = document.getElementById('box');
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box.addEventListener('animationstart', dumpLayersSoon, false);
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box.classList.add('animating');
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}
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window.addEventListener('load', runTest, false);
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</script>
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</head>
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<body>
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<p>An in-view element animating off-screen should not have backing store.</p>
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<pre id="out"></pre>
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<div id="box">
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Some text here to force backing store.
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</div>
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</body>
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</html>
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