39 lines
948 B
HTML
39 lines
948 B
HTML
<!DOCTYPE html>
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<html class="reftest-wait reftest-no-flush">
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<style>
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html {
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/* Suppress scrollbars to avoid periodical unthrottling for transform */
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/* animations on the compositor. */
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overflow: hidden;
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}
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body {
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margin: 0px;
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padding: 0px;
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}
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@keyframes anim {
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0% { transform: translateX(100px); }
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100% { transform: translateX(100px); }
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}
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#target {
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width: 100px;
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height: 100px;
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position: absolute;
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background-color: green;
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}
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</style>
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<div id="target"></div>
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<script>
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document.addEventListener('MozReftestInvalidate', () => {
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// Set a bit longer animation delay to avoid painting the initial animation
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// style on the main thread.
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target.style.animation = "anim 100s 1s";
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target.addEventListener("animationstart", () => {
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requestAnimationFrame(() => {
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requestAnimationFrame(() => {
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document.documentElement.classList.remove("reftest-wait");
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});
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});
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});
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}, { once: true });
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</script>
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</html>
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