42 lines
1.2 KiB
HTML
42 lines
1.2 KiB
HTML
<!DOCTYPE html>
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<html class="reftest-wait reftest-no-flush">
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<meta name="viewport" content="width=device-width,initial-scale=1">
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<style>
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@keyframes first {
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0% { opacity: 0; }
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100% { opacity: 0; }
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}
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@keyframes second {
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0% { opacity: 0.5; }
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100% { opacity: 0.5; }
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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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opacity: 1;
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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", async () => {
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target.style.animation = "first 100s";
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await new Promise(resolve => {
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target.addEventListener("animationstart", resolve);
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});
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// Wait two frames to make sure the animation is composited.
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await new Promise(resolve => { requestAnimationFrame(resolve); });
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await new Promise(resolve => { requestAnimationFrame(resolve); });
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target.style.animation = "second 100s 100s";
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// To take a snapshot in the delay phase, wait two frames instead of
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// wait for the animationstart event.
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await new Promise(resolve => { requestAnimationFrame(resolve); });
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await new Promise(resolve => { requestAnimationFrame(resolve); });
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document.documentElement.classList.remove("reftest-wait");
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}, { once: true });
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</script>
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</html>
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