59 lines
1.4 KiB
HTML
59 lines
1.4 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<style>
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.layerized {
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transform: translateZ(0);
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width: 300px;
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height: 300px;
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}
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.vspace {
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height: 1000px;
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}
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#out {
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position: absolute;
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}
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</style>
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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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window.onload = function() {
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if (!window.testRunner)
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return;
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let beforeScrollLayers = internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_BACKING_STORE_ATTACHED);
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requestAnimationFrame(() => {
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window.scrollTo(0, 3000);
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let uiScript = `(function() {
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uiController.doAfterNextStablePresentationUpdate(function() {
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uiController.uiScriptComplete();
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});
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})()`
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testRunner.runUIScript(uiScript, () => {
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let afterLayers = internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_BACKING_STORE_ATTACHED);
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let out = document.getElementById('out');
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out.textContent = `Before\n${beforeScrollLayers}\n\nAfter\n${afterLayers}`
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testRunner.notifyDone();
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});
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});
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};
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</script>
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</head>
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<body>
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<pre id="out"></pre>
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<div class="layerized">First layer.</div>
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<div class="vspace"></div>
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<div class="layerized">Second layer.</div>
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<div class="vspace"></div>
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<div class="layerized">Third layer.</div>
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</body>
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</html>
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