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
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
<!DOCTYPE html>
<title>CSS Anchor Positioning: basic position-area positioning</title>
<link rel="help" href="https://drafts.csswg.org/css-anchor-position/#position-area">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<!-- The grid:
100 150 150
+--------+--------+--------+
| | | |
150 | | | |
| | | |
+--------+--------+--------+
| | | |
75 | | | |
| | | |
+--------+--------+--------+
| | | |
175 | | | |
| | | |
+--------+--------+--------+
-->
<style>
#container {
position: absolute;
width: 400px;
height: 400px;
margin: 0 auto;
border: 2px solid;
background: #eee;
}
#anchored {
position: absolute;
align-self: stretch;
justify-self: stretch;
position-anchor: --anchor;
background: #FA08;
outline: 1px solid orange;
}
#anchor {
margin-top: 150px;
margin-left: 100px;
width: 150px;
height: 75px;
anchor-name: --anchor;
background: blue;
}
</style>
<div id="container">
<div id="anchored"></div>
<div id="anchor"></div>
</div>
<script>
function test_position_area(position_area, expected_offsets) {
anchored.style.positionArea = position_area;
test(() => {
assert_equals(anchored.offsetLeft, expected_offsets.left, "Check expected offsetLeft");
assert_equals(anchored.offsetTop, expected_offsets.top, "Check expected offsetTop");
assert_equals(anchored.offsetWidth, expected_offsets.width, "Check expected offsetWidth");
assert_equals(anchored.offsetHeight, expected_offsets.height, "Check expected offsetHeight");
}, "Offsets for: " + position_area);
}
test_position_area("none", {left:0, top:0, width:0, height:0});
test_position_area("span-all", {left:0, top:0, width:400, height:400});
test_position_area("span-all span-all", {left:0, top:0, width:400, height:400});
// Single region spans
test_position_area("top left", {left:0, top:0, width:100, height:150});
test_position_area("top center", {left:100, top:0, width:150, height:150});
test_position_area("top right", {left:250, top:0, width:150, height:150});
test_position_area("center left", {left:0, top:150, width:100, height:75});
test_position_area("center center", {left:100, top:150, width:150, height:75});
test_position_area("center right", {left:250, top:150, width:150, height:75});
test_position_area("bottom left", {left:0, top:225, width:100, height:175});
test_position_area("bottom center", {left:100, top:225, width:150, height:175});
test_position_area("bottom right", {left:250, top:225, width:150, height:175});
test_position_area("start start", {left:0, top:0, width:100, height:150});
test_position_area("start center", {left:100, top:0, width:150, height:150});
test_position_area("start end", {left:250, top:0, width:150, height:150});
test_position_area("center start", {left:0, top:150, width:100, height:75});
test_position_area("center end", {left:250, top:150, width:150, height:75});
test_position_area("end start", {left:0, top:225, width:100, height:175});
test_position_area("end center", {left:100, top:225, width:150, height:175});
test_position_area("end end", {left:250, top:225, width:150, height:175});
test_position_area("self-start self-start", {left:0, top:0, width:100, height:150});
test_position_area("self-start center", {left:100, top:0, width:150, height:150});
test_position_area("self-start self-end", {left:250, top:0, width:150, height:150});
test_position_area("center self-start", {left:0, top:150, width:100, height:75});
test_position_area("center self-end", {left:250, top:150, width:150, height:75});
test_position_area("self-end self-start", {left:0, top:225, width:100, height:175});
test_position_area("self-end center", {left:100, top:225, width:150, height:175});
test_position_area("self-end self-end", {left:250, top:225, width:150, height:175});
test_position_area("y-start x-start", {left:0, top:0, width:100, height:150});
test_position_area("y-start center", {left:100, top:0, width:150, height:150});
test_position_area("y-start x-end", {left:250, top:0, width:150, height:150});
test_position_area("center x-start", {left:0, top:150, width:100, height:75});
test_position_area("center x-end", {left:250, top:150, width:150, height:75});
test_position_area("y-end x-start", {left:0, top:225, width:100, height:175});
test_position_area("y-end center", {left:100, top:225, width:150, height:175});
test_position_area("y-end x-end", {left:250, top:225, width:150, height:175});
test_position_area("y-self-start x-self-start", {left:0, top:0, width:100, height:150});
test_position_area("y-self-start center", {left:100, top:0, width:150, height:150});
test_position_area("y-self-start x-self-end", {left:250, top:0, width:150, height:150});
test_position_area("center x-self-start", {left:0, top:150, width:100, height:75});
test_position_area("center x-self-end", {left:250, top:150, width:150, height:75});
test_position_area("y-self-end x-self-start", {left:0, top:225, width:100, height:175});
test_position_area("y-self-end center", {left:100, top:225, width:150, height:175});
test_position_area("y-self-end x-self-end", {left:250, top:225, width:150, height:175});
// Multi-region spans
test_position_area("span-y-self-start span-x-self-end", {left:100, top:0, width:300, height:225});
test_position_area("span-bottom span-all", {left:0, top:150, width:400, height:250});
// No implicit anchor means the position-area should not apply.
anchored.style.positionAnchor = "auto";
test_position_area("span-all top", {left:0, top:0, width:0, height:0});
</script>
|
