зеркало из https://github.com/mozilla/gecko-dev.git
48 строки
1.2 KiB
HTML
48 строки
1.2 KiB
HTML
<!DOCTYPE html>
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<html class="reftest-wait">
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<title>
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Removing CSS animation in delay phase destroys a stacking context
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</title>
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<style>
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span {
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height: 100px;
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width: 100px;
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position: fixed;
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background: green;
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top: 50px;
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}
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@keyframes Opacity0 {
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from, to { opacity: 0 }
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}
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#test {
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width: 100px; height: 100px;
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background: blue;
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opacity: 1 ! important;
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}
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</style>
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<span></span>
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<div id="test"></div>
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<script>
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window.addEventListener("load", () => {
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var target = document.getElementById("test");
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target.style.animation = "Opacity0 100s 100s";
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// We need to wait for MozAfterPaint instead of requestAnimationFrame to
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// ensure the stacking context has been updated on the compositor.
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window.addEventListener("MozAfterPaint", function() {
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// Here we have CSS animation on 100% opacity style element, so
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// there should be a stacking context.
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target.style.animation = "";
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// This time we don't need to wait for MozAfterPaint because reftest tool
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// will be received MozAferPaint event.
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requestAnimationFrame(() => {
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// Now we have only 100% opacity style, so we should not create any
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// stacking context.
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document.documentElement.classList.remove("reftest-wait");
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});
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}, {once: true});
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});
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</script>
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