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64 lines
1.6 KiB
HTML
64 lines
1.6 KiB
HTML
<html class="reftest-wait">
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<title>Scroll timeline with Web Animation using a scroller with overflow hidden</title>
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<link rel="help" href="https://drafts.csswg.org/scroll-animations/">
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<meta name="assert" content="Web animation correctly updates values when using a overflow: hidden on the scroller being used as the source for the ScrollTimeline">
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<link rel="match" href="animation-with-overflow-hidden-ref.html">
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<script src="/web-animations/testcommon.js"></script>
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<script src="/common/reftest-wait.js"></script>
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<style>
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#box {
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width: 100px;
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height: 100px;
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background-color: green;
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}
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#covered {
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width: 100px;
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height: 100px;
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background-color: red;
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}
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#scroller {
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overflow: hidden;
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height: 100px;
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width: 100px;
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}
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#contents {
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height: 1000px;
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width: 100%;
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}
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</style>
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<div id="box"></div>
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<div id="covered"></div>
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<div id="scroller">
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<div id="contents"></div>
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</div>
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<script>
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const box = document.getElementById('box');
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const effect = new KeyframeEffect(box,
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[
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{transform: 'translateY(0)', opacity: 1},
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{transform: 'translateY(200px)', opacity: 0}
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]
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);
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const scroller = document.getElementById('scroller');
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const timeline = new ScrollTimeline(
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{ source: scroller, orientation: 'block' });
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const animation = new Animation(effect, timeline);
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animation.play();
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animation.ready.then(() => {
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// Move the scroller to the halfway point.
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const maxScroll = scroller.scrollHeight - scroller.clientHeight;
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scroller.scrollTop = 0.5 * maxScroll;
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waitForAnimationFrames(2).then(_ => {
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takeScreenshot();
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});
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});
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</script>
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