233 lines
8.9 KiB
HTML
233 lines
8.9 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://www.w3.org/TR/scroll-animations-1/#named-range-animation-declaration">
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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="/web-animations/resources/keyframe-utils.js"></script>
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<script src="support/testcommon.js"></script>
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<script src="/scroll-animations/scroll-timelines/testcommon.js"></script>
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<title>Programmatic API overrides animation-range-*</title>
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</head>
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<style type="text/css">
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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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@keyframes anim {
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from { margin-left: 0px; }
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to { margin-left: 100px; }
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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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}
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.animate {
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animation: anim auto linear;
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view-timeline: --timeline;
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animation-timeline: --timeline;
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animation-range-start: entry 0%;
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animation-range-end: entry 100%;
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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 startAnimation(t) {
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target.classList.add('animate');
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t.add_cleanup(async () => {
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target.classList.remove('animate');
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await waitForNextFrame();
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});
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return target.getAnimations()[0];
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}
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promise_test(async t => {
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// Points of interest:
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// entry 0% @ 600
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// entry 100% / contain 0% @ 700
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// exit 0% / contain 100% @ 800
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// exit 100% @ 900
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const anim = startAnimation(t);
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await anim.ready;
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scroller.scrollTop = 650;
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await waitForNextFrame();
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// Timline time = (scroll pos - cover 0%) / (cover 100% - cover 0%) * 100%
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// = (650 - 600)/(900 - 600) * 100% = 100/6%
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assert_percents_equal(anim.timeline.currentTime, 100/6,
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'timeline\'s current time before style change');
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assert_percents_equal(anim.startTime, 0,
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'animation\'s start time before style change');
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// Range start of entry 0% aligns with timeline start. Thus, animation's
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// and timeline's current time are equal.
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assert_percents_equal(anim.currentTime, 100/6,
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'animation\'s current time before style change');
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// Iteration duration =
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// (range end - range start) / (cover 100% - cover 0%) * 100%
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// = (700 - 600) / (900 - 600) = 33.3333%
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assert_percents_equal(anim.effect.getComputedTiming().duration,
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100/3,
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'iteration duration before first style change');
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assert_equals(getComputedStyle(target).marginLeft, '50px',
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'margin-left before style change');
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// Step 1: Set the range end programmatically and range start via CSS.
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// The start time will be respected since not previously set via the
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// animation API.
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await runAndWaitForFrameUpdate(() => {
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anim.rangeEnd = 'contain 100%';
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target.style.animationRangeStart = 'entry 50%';
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});
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// Animation range does not affect timeline's currentTime.
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assert_percents_equal(
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anim.timeline.currentTime, 100/6,
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'timeline\'s current time after first set of range updates');
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assert_percents_equal(
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anim.startTime, 100/6,
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'animation\'s start time after first set of range updates');
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// Scroll position aligns with range start.
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assert_percents_equal(
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anim.currentTime, 0,
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'animation\'s current time after first set of range updates');
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// Iteration duration =
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// (range end - range start) / (cover 100% - cover 0%) * 100%
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// = (800 - 650) / (900 - 600) = 50%
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assert_percents_equal(
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anim.effect.getComputedTiming().duration, 50,
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'iteration duration after first style change');
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assert_equals(getComputedStyle(target).marginLeft, '0px',
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'margin-left after first set of range updates');
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// Step 2: Programmatically set the range start.
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// Scroll position is current at entry 50%, thus the animation's current
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// time is negative.
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await runAndWaitForFrameUpdate(() => {
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anim.rangeStart = 'contain 0%';
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});
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// animation current time =
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// (scroll pos - range start) / (cover 100% - cover 0%) * 100%
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// = (650 - 700) / (900 - 600) * 100% = -100/6%
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assert_percents_equal(
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anim.currentTime, -100/6,
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'animation\'s current time after second set of range updates');
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// Iteration duration =
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// (range end - range start) / (cover 100% - cover 0%) * 100%
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// = (800 - 700) / (900 - 600) = 33.3333%
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assert_percents_equal(
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anim.effect.getComputedTiming().duration, 100/3,
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'iteration duration after second style change');
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assert_equals(getComputedStyle(target).marginLeft, '0px',
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'margin-left after second set of range updates');
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// Jump to contain / cover 50%
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scroller.scrollTop = 750;
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await waitForNextFrame();
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// animation current time =
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// (scroll pos - range start) / (cover 100% - cover 0%) * 100%
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// = (750 - 700) / (900 - 600) * 100% = 100/6%
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assert_percents_equal(
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anim.currentTime, 100/6,
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'animation\'s current time after bumping scroll position');
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assert_approx_equals(parseFloat(getComputedStyle(target).marginLeft), 50, 0.125);
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// Step 3: Try to update the range start via CSS. This change must be
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// ignored since previously set programmatically.
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await runAndWaitForFrameUpdate(() => {
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target.style.animationRangeStart = "entry 50%";
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});
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assert_percents_equal(
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anim.currentTime, 100/6,
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'Current time unchanged after change to ignored CSS property');
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assert_approx_equals(parseFloat(getComputedStyle(target).marginLeft), 50, 0.125,
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'Margin-left unaffected by change to ignored CSS property');
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}, 'Animation API call rangeStart overrides animation-range-start');
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promise_test(async t => {
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const anim = startAnimation(t);
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await anim.ready;
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scroller.scrollTop = 650;
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await waitForNextFrame();
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// Step 1: Set the range start programmatically and range end via CSS.
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// The start time will be respected since not previously set via the
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// animation API.
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await runAndWaitForFrameUpdate(() => {
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anim.rangeStart = "entry 50%";
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target.style.animationRangeEnd = "contain 100%";
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});
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assert_percents_equal(
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anim.timeline.currentTime, 100/6,
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'timeline\'s current time after first set of range updates');
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assert_percents_equal(
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anim.startTime, 100/6,
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'animation\'s start time after first set of range updates');
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assert_percents_equal(
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anim.currentTime, 0,
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'animation\'s current time after first set of range updates');
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assert_percents_equal(
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anim.effect.getComputedTiming().duration, 50,
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'iteration duration after first style change');
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assert_equals(getComputedStyle(target).marginLeft, "0px",
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'margin-left after first set of range updates');
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// Step 2: Programmatically set the range.
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// Scroll position is current at entry 50%, thus the animation's current
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// time is negative.
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await runAndWaitForFrameUpdate(() => {
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anim.rangeStart = "contain 0%";
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anim.rangeEnd = "contain 100%";
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});
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assert_percents_equal(
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anim.currentTime, -100/6,
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'animation\'s current time after second set of range updates');
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assert_percents_equal(
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anim.effect.getComputedTiming().duration, 100/3,
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'iteration duration after second style change');
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assert_equals(getComputedStyle(target).marginLeft, "0px",
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'margin-left after second set of range updates');
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// Jump to contain / cover 50%
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scroller.scrollTop = 750;
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await waitForNextFrame();
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assert_percents_equal(
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anim.currentTime, 100/6,
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'animation\'s current time after bumping scroll position');
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assert_approx_equals(parseFloat(getComputedStyle(target).marginLeft), 50, 0.125);
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// Step 3: Try to update the range end via CSS. This change must be
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// ignored since previously set programmatically.
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await runAndWaitForFrameUpdate(() => {
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target.style.animationRangeEnd = "cover 100%";
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});
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assert_percents_equal(
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anim.currentTime, 100/6,
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'Current time unchanged after change to ignored CSS property');
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assert_approx_equals(parseFloat(getComputedStyle(target).marginLeft), 50, 0.125,
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'Margin-left unaffected by change to ignored CSS property');
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}, 'Animation API call rangeEnd overrides animation-range-end');
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}
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window.onload = runTest;
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</script>
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