93 lines
2.7 KiB
HTML
93 lines
2.7 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<link rel="help" src="https://drafts.csswg.org/scroll-animations-1/#named-timeline-range">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="/web-animations/testcommon.js"></script>
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<script src="support/testcommon.js"></script>
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<title>Animation range and delay</title>
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</head>
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<style type="text/css">
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@keyframes anim {
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from { opacity: 0 }
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to { opacity: 1 }
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}
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#scroller {
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border: 10px solid lightgray;
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overflow-y: scroll;
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width: 300px;
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height: 200px;
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}
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#target {
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margin: 800px 0px;
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width: 100px;
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height: 100px;
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z-index: -1;
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background-color: green;
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animation: anim auto linear;
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animation-timeline: --t1;
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view-timeline: --t1 block;
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animation-range-start: entry 0%;
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animation-range-end: entry 100%;
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/* Sentinel value when in before or after phase of the animation. */
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opacity: 0.96875;
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}
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</style>
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<body>
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<div id=scroller>
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<div id=target></div>
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</div>
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</body>
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<script type="text/javascript">
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async function runTest() {
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function assert_opacity_equals(expected, errorMessage) {
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assert_approx_equals(
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parseFloat(getComputedStyle(target).opacity), expected, 1e-6,
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errorMessage);
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}
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promise_test(async t => {
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await waitForNextFrame();
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const anim = document.getAnimations()[0];
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await anim.ready;
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await waitForNextFrame();
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scroller.scrollTop = 650;
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await waitForNextFrame();
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const baseOpacity = 0.96875;
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// Delays are percentages.
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const testData = [
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{ delay: 0, endDelay: 0, opacity: 0.5 },
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{ delay: 20, endDelay: 0, opacity: 0.375 },
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{ delay: 0, endDelay: 20, opacity: 0.625 },
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{ delay: 20, endDelay: 20, opacity: 0.5 },
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// Negative delays.
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{ delay: -25, endDelay: 0, opacity: 0.6 },
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{ delay: 0, endDelay: -25, opacity: 0.4 },
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{ delay: -25, endDelay: -25, opacity: 0.5 },
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// Stress tests with >= 100% total delay. Verify effect is inactive.
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{ delay: 100, endDelay: 0, opacity: baseOpacity },
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{ delay: 0, endDelay: 100, opacity: baseOpacity },
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{ delay: 100, endDelay: 100, opacity: baseOpacity }
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];
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testData.forEach(test => {
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anim.effect.updateTiming({
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delay: CSS.percent(test.delay),
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endDelay: CSS.percent(test.endDelay)
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});
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assert_opacity_equals(
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test.opacity,
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`Opacity when delay=${test.delay} and endDelay=${test.endDelay}`);
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});
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}, 'ViewTimeline with animation delays and range');
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}
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window.onload = runTest;
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</script>
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</html>
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