1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Animating pseduo-element on scroller using named timeline</title>
</head>
<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>
<script src="testcommon.js"></script>
<style type="text/css">
.scroller {
overflow: scroll;
width: 100px;
height: 100px;
margin: 1em;
outline: 1px solid;
scroll-timeline: --t1 y;
}
.pseudo::before {
content: "";
display: block;
width: 50px;
height: 50px;
background: red;
animation: bg linear;
animation-timeline: --t1;
}
.content {
width: 200px;
height: 200px;
background-color: yellow;
}
@keyframes bg {
from {
background: rgb(0, 255, 0);
}
to {
background: rgb(0, 0, 255);
}
}
</style>
<body>
<div class="scroller pseudo">
<div class="content">
</div>
</div>
<div id="log"></div>
</body>
<script type="text/javascript">
'use strict';
promise_test(async t => {
await waitForCSSScrollTimelineStyle();
const scroller = document.querySelector('.scroller');
assert_equals(getComputedStyle(scroller, ':before').backgroundColor,
'rgb(0, 255, 0)');
}, `named timeline on pseudo-element attaches to parent scroll container`);
</script>
</html>
|
