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<!DOCTYPE html>
<title>Animations using view-timeline</title>
<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1">
<link rel="help" src="https://drafts.csswg.org/scroll-animations-1/#view-timelines-named">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/web-animations/testcommon.js"></script>
<script src="support/testcommon.js"></script>
<style>
@keyframes anim {
from { z-index: 0; }
to { z-index: 100; }
}
.vertical-scroller {
overflow: auto;
width: 100px;
height: 100px;
}
.vertical-scroller > div {
height: 50px;
z-index: -1;
}
.horizontal-scroller {
overflow: auto;
width: 100px;
height: 100px;
writing-mode: vertical-lr;
}
.horizontal-scroller > div {
width: 50px;
z-index: -1;
}
</style>
<main id=main></main>
<script>
setup(assert_implements_animation_timeline);
function inflate(t, template) {
t.add_cleanup(() => main.replaceChildren());
main.append(template.content.cloneNode(true));
}
async function scrollTop(e, value) {
e.scrollTop = value;
await waitForNextFrame();
}
async function scrollLeft(e, value) {
e.scrollLeft = value;
await waitForNextFrame();
}
</script>
<template id=default_view_timeline>
<style>
#target {
view-timeline: --t1;
animation: anim 1s linear forwards;
animation-timeline: --t1;
}
</style>
<div id=scroller class=vertical-scroller>
<div></div> <!-- [0px, 50px] -->
<div></div> <!-- [50px, 100px] -->
<div></div> <!-- [100px, 150px] -->
<div id=target></div> <!-- [150px, 200px] -->
<div></div> <!-- [200px, 250px] -->
<div></div> <!-- [250px, 300px] -->
<div></div> <!-- [300px, 350px] -->
</div>
</template>
<script>
promise_test(async (t) => {
inflate(t, default_view_timeline);
assert_equals(getComputedStyle(target).zIndex, '-1');
await scrollTop(scroller, 25);
assert_equals(getComputedStyle(target).zIndex, '-1');
await scrollTop(scroller, 50); // 0% (enter 0%)
assert_equals(getComputedStyle(target).zIndex, '0');
await scrollTop(scroller, 125); // 50%
assert_equals(getComputedStyle(target).zIndex, '50');
await scrollTop(scroller, 200); // 100% (exit 100%)
assert_equals(getComputedStyle(target).zIndex, '100');
await scrollTop(scroller, 201); // now over the 100% scroll offset, but "fill: forwards" lets the animation apply.
assert_equals(getComputedStyle(target).zIndex, '100');
document.getAnimations()[0].effect.updateTiming( { fill: 'none' });
assert_equals(getComputedStyle(target).zIndex, '-1');
await scrollTop(scroller, 200); // now back to the 100% scroll offset.
assert_equals(getComputedStyle(target).zIndex, '100');
}, 'Default view-timeline');
</script>
<template id=horizontal_timeline>
<style>
#target {
view-timeline: --t1 x;
animation: anim 1s linear forwards;
animation-timeline: --t1;
}
</style>
<div id=scroller class=horizontal-scroller>
<div></div> <!-- [0px, 50px] -->
<div></div> <!-- [50px, 100px] -->
<div></div> <!-- [100px, 150px] -->
<div id=target></div> <!-- [150px, 200px] -->
<div></div> <!-- [200px, 250px] -->
<div></div> <!-- [250px, 300px] -->
<div></div> <!-- [300px, 350px] -->
</div>
</template>
<script>
promise_test(async (t) => {
inflate(t, horizontal_timeline);
assert_equals(getComputedStyle(target).zIndex, '-1');
await scrollLeft(scroller, 25);
assert_equals(getComputedStyle(target).zIndex, '-1');
await scrollLeft(scroller, 50); // 0% (enter 0%)
assert_equals(getComputedStyle(target).zIndex, '0');
await scrollLeft(scroller, 125); // 50%
assert_equals(getComputedStyle(target).zIndex, '50');
await scrollLeft(scroller, 200); // 100% (exit 100%)
assert_equals(getComputedStyle(target).zIndex, '100');
await scrollLeft(scroller, 201); // now over the 100% scroll offset, but "fill: forwards" lets the animation apply.
assert_equals(getComputedStyle(target).zIndex, '100');
document.getAnimations()[0].effect.updateTiming( { fill: 'none' });
assert_equals(getComputedStyle(target).zIndex, '-1');
await scrollLeft(scroller, 200); // now back to the 100% scroll offset.
assert_equals(getComputedStyle(target).zIndex, '100');
}, 'Horizontal view-timeline');
</script>
<template id=multiple_timelines>
<style>
#timelines {
view-timeline: --tv y, --th x;
background-color: red;
}
#scroller {
width: 100px;
height: 100px;
overflow: hidden;
display: grid;
grid-template-columns: 50px 50px 50px 50px 50px 50px 50px;
grid-template-row: 50px 50px 50px 50px 50px 50px 50px;
timeline-scope: --tv, --th;
}
#scroller > div {
z-index: -1;
width: 50px;
height: 50px;
}
#target_v {
animation: anim 1s linear forwards;
animation-timeline: --tv;
}
#target_h {
animation: anim 1s linear forwards;
animation-timeline: --th;
}
</style>
<div id=scroller>
<!-- Created dynamically -->
</div>
</template>
<script>
promise_test(async (t) => {
inflate(t, multiple_timelines);
// Create a 350px x 350px grid (7x7 items of 50x50px each), with the
// timelines at item [3,3], an element attached to the horizontal timeline
// at [4,3], and an element attached to the vertical timeline at [3,4].
// x x x x x x x
// x x x x x x x
// x x x x x x x
// x x x T H x x
// x x x V x x x
// x x x x x x x
// x x x x x x x
// x x x x x x x
let grid_size = 7;
for (let i = 0; i < (grid_size*grid_size); ++i) {
let div = document.createElement('div');
if (i == (3 * grid_size + 3))
div.id = 'timelines';
if (i == (3 * grid_size + 4))
div.id = 'target_h';
if (i == (4 * grid_size + 3))
div.id = 'target_v';
scroller.append(div);
}
assert_equals(getComputedStyle(target_v).zIndex, '-1');
assert_equals(getComputedStyle(target_h).zIndex, '-1');
// First scroll vertically.
await scrollTop(scroller, 25);
assert_equals(getComputedStyle(target_v).zIndex, '-1');
assert_equals(getComputedStyle(target_h).zIndex, '-1');
await scrollTop(scroller, 50); // 0% (enter 0%)
assert_equals(getComputedStyle(target_v).zIndex, '0');
assert_equals(getComputedStyle(target_h).zIndex, '-1');
await scrollTop(scroller, 125); // 50%
assert_equals(getComputedStyle(target_v).zIndex, '50');
assert_equals(getComputedStyle(target_h).zIndex, '-1');
await scrollTop(scroller, 200); // 100% (exit 100%)
assert_equals(getComputedStyle(target_v).zIndex, '100');
assert_equals(getComputedStyle(target_h).zIndex, '-1');
await scrollTop(scroller, 201); // now over the 100% scroll offset, but "fill: forwards" lets the animation apply.
assert_equals(getComputedStyle(target_v).zIndex, '100');
assert_equals(getComputedStyle(target_h).zIndex, '-1');
document.getElementById('target_v').getAnimations()[0].
effect.updateTiming({ fill: 'none' });
assert_equals(getComputedStyle(target_v).zIndex, '-1');
assert_equals(getComputedStyle(target_h).zIndex, '-1');
// Then horizontally.
await scrollLeft(scroller, 25);
assert_equals(getComputedStyle(target_v).zIndex, '-1');
assert_equals(getComputedStyle(target_h).zIndex, '-1');
await scrollLeft(scroller, 50); // 0% (enter 0%)
assert_equals(getComputedStyle(target_v).zIndex, '-1');
assert_equals(getComputedStyle(target_h).zIndex, '0');
await scrollLeft(scroller, 125); // 50%
assert_equals(getComputedStyle(target_v).zIndex, '-1');
assert_equals(getComputedStyle(target_h).zIndex, '50');
await scrollLeft(scroller, 200); // 100% (exit 100%)
assert_equals(getComputedStyle(target_v).zIndex, '-1');
assert_equals(getComputedStyle(target_h).zIndex, '100');
await scrollLeft(scroller, 201); // now over the 100% scroll offset, but "fill: forwards" lets the animation apply.
assert_equals(getComputedStyle(target_v).zIndex, '-1');
assert_equals(getComputedStyle(target_h).zIndex, '100');
document.getElementById('target_h').getAnimations()[0].
effect.updateTiming({ fill: 'none' });
assert_equals(getComputedStyle(target_v).zIndex, '-1');
assert_equals(getComputedStyle(target_h).zIndex, '-1');
await scrollTop(scroller, 200); // now back to the 100% scroll offset.
await scrollLeft(scroller, 200); // now back to the 100% scroll offset.
assert_equals(getComputedStyle(target_v).zIndex, '100');
assert_equals(getComputedStyle(target_h).zIndex, '100');
}, 'Multiple view-timelines on the same element');
</script>
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