58 lines
1.9 KiB
HTML
58 lines
1.9 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<style>
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.fixed {
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position: fixed;
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width: 10px;
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height: 10px;
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background-color: silver;
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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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if (window.internals) {
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window.internals.settings.setAcceleratedCompositingForFixedPositionEnabled(true);
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addEventListener("load", function() {
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document.getElementById("layerTree").innerText = internals.layerTreeAsText(document);
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window.internals.setPageScaleFactor(0.5, 0, 0);
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setTimeout(function() {
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document.getElementById("layerTreeScaledDown").innerText = internals.layerTreeAsText(document);
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window.internals.setPageScaleFactor(1.5, 0, 0);
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setTimeout(function() {
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document.getElementById("layerTreeScaledUp").innerText = internals.layerTreeAsText(document);
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testRunner.notifyDone();
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}, 0);
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}, 0);
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}, false);
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}
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</script>
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</head>
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<body>
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<div style="height: 1000px">
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Not scaled:
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<pre id="layerTree"></pre>
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Scale=0.5:
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<pre id="layerTreeScaledDown"></pre>
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Scale=1.5:
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<pre id="layerTreeScaledUp"></pre>
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</div>
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<!-- The layer tree should always be the same, regardless of page scale, except on platforms that enable the applyPageScaleFactorInCompositor Setting. -->
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<!-- No layer in any case. -->
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<div class="fixed" style="top: -100px"></div>
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<!-- When applyPageScaleFactorInCompositor is true, this will have a composited layer when scaled down; no layer when not scaled or scaled up. -->
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<div class="fixed"></div>
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<div class="fixed" style="top: 0px; left: 1000px"></div>
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<!-- When applyPageScaleFactorInCompositor is true, this will have composited layer when not scaled and scaled down; no layer scaled up. -->
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<div class="fixed" style="top: 0px; left: 600px"></div>
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<!-- Always has composited layer. -->
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<div class="fixed" style="top: 0px; left: 0px"></div>
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</body>
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</html>
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