88 lines
2.7 KiB
HTML
88 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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<script src="/web-animations/resources/keyframe-utils.js"></script>
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<script src="/scroll-animations/scroll-timelines/testcommon.js"></script>
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<title>Animation range updates play state</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 { background-color: blue; }
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to { background-color: white; }
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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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overflow-x: hidden;
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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-top: 800px;
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margin-bottom: 800px;
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margin-left: 10px;
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margin-right: 10px;
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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 both linear;
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animation-timeline: --t1;
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view-timeline: --t1;
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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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promise_test(async t => {
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anim = target.getAnimations()[0];
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await anim.ready;
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// Cover range = 600px to 900px
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scroller.scrollTop = 750;
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await waitForNextFrame();
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// Animation is running in the active phase.
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await runAndWaitForFrameUpdate(() => {
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anim.rangeStart = 'contain 0%'; // 700px
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anim.rangeEnd = 'contain 100%'; // 800px
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});
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assert_equals(anim.playState, 'running');
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assert_percents_equal(anim.startTime, 100/3);
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assert_percents_equal(anim.currentTime, 100/6);
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// Animation in the after phase and switches to the finished state.
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await runAndWaitForFrameUpdate(() => {
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anim.rangeStart = 'entry 0%'; // 600px
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anim.rangeEnd = 'entry 100%'; // 700px
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});
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assert_equals(anim.playState, 'finished');
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assert_percents_equal(anim.startTime, 0);
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// In the after phase, so current time is clamped.
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assert_percents_equal(anim.currentTime, 100/3);
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// Animation in the before phase and switches back to the running state.
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await runAndWaitForFrameUpdate(() => {
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anim.rangeStart = 'exit 0%'; // 800px
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anim.rangeEnd = 'exit 100%'; // 900px
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});
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assert_equals(anim.playState, 'running');
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assert_percents_equal(anim.startTime, 200/3);
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assert_percents_equal(anim.currentTime, -100/6);
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}, 'Changing the animation range updates the play state');
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}
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window.onload = runTest;
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</script>
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