blob: 481dcc45831bd1891c70c36d9fe7d6ab1211ba61 (
plain)
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
|
<!doctype HTML>
<html>
<meta charset="utf8">
<title>Display Locking: measure forced SVG text</title>
<link rel="author" title="Vladimir Levin" href="mailto:vmpstr@chromium.org">
<link rel="help" href="https://drafts.csswg.org/css-contain/#content-visibility">
<meta name="assert" content="content-visibility hidden svg descendant has correct layout">
<style>
#container {
width: 100px;
height: 100px;
background: lightgreen;
}
.hidden {
content-visibility: hidden;
}
</style>
<div id="parent"></div>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
async_test((t) => {
let length;
function measureForced() {
t.step(() => {
length = document.getElementById("text").getComputedTextLength();
assert_not_equals(length, 0, "forced");
});
}
function measureWhenVisible() {
t.step(() => {
const visible_length = document.getElementById("text").getComputedTextLength();
assert_not_equals(visible_length, 0, "when visible");
assert_equals(visible_length, length, "when visible");
});
}
function construct(container) {
container.innerHTML = `
<svg viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
<style>
.t { font: 10px sans-serif; }
</style>
<text id="text" x="10" y="10" class="t">This is text</text>
</svg>
`;
}
async function runTest() {
const container = document.createElement("div");
container.id = "container";
document.getElementById("parent").appendChild(container);
container.classList.add("hidden");
requestAnimationFrame(() => {
construct(container);
measureForced();
container.classList.remove("hidden");
requestAnimationFrame(() => {
measureWhenVisible();
t.done();
});
});
}
window.onload = function() {
requestAnimationFrame(() => requestAnimationFrame(runTest));
};
}, "Measure Forced SVG Text");
</script>
</html>
|
