182 lines
5 KiB
HTML
182 lines
5 KiB
HTML
<!DOCTYPE html>
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<title>Scroll timelines and animation attachment ranges</title>
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<link rel="help" src="https://drafts.csswg.org/scroll-animations-1/#named-timeline-range">
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<link rel="help" src="https://drafts.csswg.org/scroll-animations-1/#animation-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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<style>
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@keyframes anim {
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from { z-index: 0; background-color: skyblue;}
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to { z-index: 100; background-color: coral; }
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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: 200px;
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height: 200px;
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}
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#scroller > div {
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margin: 800px 0px;
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width: 100px;
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height: 100px;
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}
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#target {
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font-size: 10px;
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background-color: green;
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z-index: -1;
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}
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</style>
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<main id=main>
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</main>
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<template id=template_without_scope>
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<div id=scroller class=timeline>
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<div id=target></div>
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</div>
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</template>
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<template id=template_with_scope>
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<div id=scope>
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<div id=target></div>
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<div id=scroller class=timeline>
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<div></div>
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</div>
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</div>
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</template>
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<script>
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setup(assert_implements_animation_timeline);
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function inflate(t, template) {
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t.add_cleanup(() => main.replaceChildren());
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main.append(template.content.cloneNode(true));
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}
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async function scrollTop(e, value) {
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e.scrollTop = value;
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await waitForNextFrame();
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}
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async function waitForAnimationReady(target) {
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await waitForNextFrame();
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await Promise.all(target.getAnimations().map(x => x.ready));
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}
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async function assertValueAt(scroller, target, args) {
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await waitForAnimationReady(target);
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await scrollTop(scroller, args.scrollTop);
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assert_equals(getComputedStyle(target).zIndex, args.expected.toString());
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}
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function test_animation_range(options, template, desc_suffix) {
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if (template === undefined)
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template = template_without_scope;
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if (desc_suffix === undefined)
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desc_suffix = '';
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promise_test(async (t) => {
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inflate(t, template);
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let scroller = main.querySelector('#scroller');
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let target = main.querySelector('#target');
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let timeline = main.querySelector('.timeline');
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let scope = main.querySelector('#scope');
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let maxScroll = scroller.scrollHeight - scroller.clientHeight;
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if (scope != null) {
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scope.style.timelineScope = '--t1';
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}
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timeline.style.scrollTimeline = '--t1';
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target.style.animation = 'anim auto linear';
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target.style.animationTimeline = '--t1';
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target.style.animationRangeStart = options.rangeStart;
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target.style.animationRangeEnd = options.rangeEnd;
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// Accommodates floating point precision errors at the endpoints.
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target.style.animationFillMode = 'both';
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// 0%
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await assertValueAt(scroller, target,
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{ scrollTop: options.startOffset, expected: 0 });
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// 50%
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await assertValueAt(scroller, target,
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{ scrollTop: (options.startOffset + options.endOffset) / 2, expected: 50 });
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// 100%
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await assertValueAt(scroller, target,
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{ scrollTop: options.endOffset, expected: 100 });
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// Test before/after phases (need to clear the fill mode for that).
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target.style.animationFillMode = 'initial';
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let before_scroll = options.startOffset - 10;
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if (before_scroll >= 0) {
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await assertValueAt(scroller, target,
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{ scrollTop: options.startOffset - 10, expected: -1 });
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}
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let after_scroll = options.startOffset + 10;
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if (after_scroll <= scroller.maxmum) {
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await assertValueAt(scroller, target,
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{ scrollTop: options.endOffset + 10, expected: -1 });
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}
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// Check 50% again without fill mode.
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await assertValueAt(scroller, target,
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{ scrollTop: (options.startOffset + options.endOffset) / 2, expected: 50 });
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}, `Animation with ranges [${options.rangeStart}, ${options.rangeEnd}] ${desc_suffix}`.trim());
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}
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test_animation_range({
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rangeStart: 'initial',
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rangeEnd: 'initial',
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startOffset: 0,
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endOffset: 1500
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});
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test_animation_range({
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rangeStart: '0%',
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rangeEnd: '100%',
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startOffset: 0,
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endOffset: 1500
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});
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test_animation_range({
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rangeStart: '10%',
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rangeEnd: '100%',
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startOffset: 150,
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endOffset: 1500
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});
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test_animation_range({
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rangeStart: '0%',
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rangeEnd: '50%',
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startOffset: 0,
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endOffset: 750
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});
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test_animation_range({
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rangeStart: '10%',
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rangeEnd: '50%',
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startOffset: 150,
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endOffset: 750
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});
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test_animation_range({
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rangeStart: '150px',
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rangeEnd: '75em',
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startOffset: 150,
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endOffset: 750
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});
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test_animation_range({
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rangeStart: 'calc(1% + 135px)',
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rangeEnd: 'calc(70em + 50px)',
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startOffset: 150,
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endOffset: 750
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});
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// Test animation-range via timeline-scope.
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test_animation_range({
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rangeStart: 'calc(1% + 135px)',
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rangeEnd: 'calc(70em + 50px)',
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startOffset: 150,
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endOffset: 750
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}, template_with_scope, '(scoped)');
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</script>
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