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
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
<!DOCTYPE html>
<html id="top">
<meta charset="utf-8">
<title>View timeline Subject size changes after creation of Animation</title>
<link rel="help" href="https://drafts.csswg.org/scroll-animations-1/#viewtimeline-interface">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/web-animations/testcommon.js"></script>
<script src="/scroll-animations/scroll-timelines/testcommon.js"></script>
<script src="/scroll-animations/view-timelines/testcommon.js"></script>
<style>
#container {
border: 10px solid lightgray;
overflow-y: scroll;
height: 400px;
width: 400px;
}
.spacer {
height: 500px;
}
#target {
background-color: green;
height: 100px;
width: 100px;
}
</style>
<body>
<div id="container">
<div class="spacer"></div>
<div id="target"></div>
<div class="spacer"></div>
</div>
</body>
<script type="text/javascript">
promise_test(async t => {
const options = {
timeline: { axis: 'y' },
animation: {
rangeStart: { rangeName: 'entry', offset: CSS.percent(0) },
rangeEnd: { rangeName: 'entry', offset: CSS.percent(100) },
// Set fill to accommodate floating point precision errors at the
// endpoints.
fill: 'both'
}
};
container.scrollTop = 0;
await waitForNextFrame();
const anim = CreateViewTimelineOpacityAnimation(t, target, options);
const timeline = anim.timeline;
anim.effect.updateTiming(options.timing);
await anim.ready;
// Advance to the start offset, which triggers entry to the active phase.
container.scrollTop = 100;
await waitForNextFrame();
assert_equals(getComputedStyle(target).opacity, '0.3',
`Effect at the start of the active phase`);
// Advance to the midpoint of the animation.
container.scrollTop = 150;
await waitForNextFrame();
assert_equals(getComputedStyle(target).opacity,'0.5',
`Effect at the midpoint of the active range`);
// Since the height of the target is cut in half, the animation should be at the end now.
target.style.height = '50px';
await waitForNextFrame();
assert_equals(getComputedStyle(target).opacity, '0.7',
`Effect at the end of the active range`);
// Advance to the midpoint of the animation again.
container.scrollTop = 125;
await waitForNextFrame();
assert_equals(getComputedStyle(target).opacity,'0.5',
`Effect at the midpoint of the active range again`);
}, 'View timeline with subject size change after the creation of the animation');
</script>
|
