62 lines
2 KiB
HTML
62 lines
2 KiB
HTML
<!DOCTYPE html>
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<meta charset=utf-8>
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<title>Root-scrolling timeline with animation moving from end point</title>
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<link rel="help" href="https://drafts.csswg.org/scroll-animations-1/#scroll-notation">
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<link rel="help" href="https://drafts.csswg.org/web-animations/#update-an-animations-finished-state">
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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="/css/css-animations/support/testcommon.js"></script>
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<script src="/scroll-animations/scroll-timelines/testcommon.js"></script>
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<script src="support/testcommon.js"></script>
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<style>
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@keyframes anim {
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from { width: 100px; }
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to { width: 200px; }
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}
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.fill-vh {
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width: 100px;
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height: 100vh;
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}
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</style>
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<body>
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<div id="log"></div>
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<script>
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'use strict';
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setup(assert_implements_animation_timeline);
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promise_test(async t => {
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const div = addDiv(t, { style: 'width: 50px; height: 100px;' });
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const filling = addDiv(t, { class: 'fill-vh' });
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const scroller = document.scrollingElement;
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scroller.scrollTop = 0;
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await waitForNextFrame();
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div.style.animation = 'anim 100s linear';
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div.style.animationTimeline = 'scroll(root)';
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await waitForCSSScrollTimelineStyle();
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const anim = div.getAnimations()[0];
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await anim.ready;
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assert_percents_equal(anim.timeline.currentTime, 0,
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'Timeline time when animation is ready');
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assert_equals(getComputedStyle(div).width, '100px',
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'Width at animation start');
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await waitForNextFrame();
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const maxScroll = scroller.scrollHeight - scroller.clientHeight;
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scroller.scrollTop = maxScroll;
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await waitForNextFrame();
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assert_equals(getComputedStyle(div).width, '200px',
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'Width at scroll limit');
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document.scrollingElement.scrollTop = 0;
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await waitForNextFrame();
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assert_equals(getComputedStyle(div).width, '100px',
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'Width after reset to scroll top');
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}, 'Test that the scroll animation is still responsive after moving from 100%');
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</script>
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</body>
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