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76 lines
1.5 KiB
HTML
76 lines
1.5 KiB
HTML
<!DOCTYPE html>
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<html lang="en" class="reftest-wait">
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<meta charset="utf-8">
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<title>Switching the transform to animate shouldn't invalidate the fixed layer</title>
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<style>
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.content {
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box-sizing: border-box;
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width: 200px;
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height: 200px;
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border: 1px solid black;
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}
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.fixed {
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position: fixed;
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background-color: white;
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top: 20px;
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left: 240px;
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}
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.reftest-no-paint {
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border-color: lime;
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}
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.transform {
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transform: translateY(0.1px);
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}
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.aboveTransform {
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margin-top: 20px;
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border-color: blue;
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position: relative;
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}
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body {
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margin: 0;
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padding: 20px;
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height: 3000px;
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}
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</style>
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<div class="transform content" id="aboutToAnimate">
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<!--
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This transform starts out inactive and is going to turn active + prerendered.
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-->
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</div>
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<div class="aboveTransform content">
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<!--
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This content is on top of .transform in z-order but starts out in the
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same layer as .transform (and the canvas background). Once the transform
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turns active, this needs its own PaintedLayer because the prerendered
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transform might asynchronously move underneath it.
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-->
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</div>
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<div class="fixed reftest-no-paint content">
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<!--
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This fixed layer gets its own PaintedLayer above the rest.
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When .aboveTransform requires its own PaintedLayer, it should not cause
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.fixed to change layers.
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-->
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</div>
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<script>
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function doTest() {
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document.querySelector("#aboutToAnimate").style.willChange = "transform";
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document.documentElement.removeAttribute("class");
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}
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document.addEventListener("MozReftestInvalidate", doTest);
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</script>
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