File: anchor-size-css-zoom.html

package info (click to toggle)
thunderbird 1%3A143.0.1-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 4,703,968 kB
  • sloc: cpp: 7,770,492; javascript: 5,943,842; ansic: 3,918,754; python: 1,418,263; xml: 653,354; asm: 474,045; java: 183,079; sh: 111,238; makefile: 20,410; perl: 14,359; objc: 13,059; yacc: 4,583; pascal: 3,405; lex: 1,720; ruby: 999; exp: 762; sql: 715; awk: 580; php: 436; lisp: 430; sed: 69; csh: 10
file content (49 lines) | stat: -rw-r--r-- 1,197 bytes parent folder | download | duplicates (8) 
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
 
<!DOCTYPE html>

<title>CSS Anchor Positioning: tests that anchor-size() works with CSS zoom property</title>
<link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/#anchor-size-fn">
<link rel="help" href="https://drafts.csswg.org/css-viewport/#zoom-property">
<link rel="author" href="mailto:kiet.ho@apple.com">
<link rel="match" href="reference/anchor-size-css-zoom-ref.html">

<style>
    #containing-block {
        position: relative;

        zoom: 2;
    }

    #anchor {
        position: absolute;

        width: 200px;
        height: 100px;

        anchor-name: --anchor;

        background: red;
    }

    #anchor-positioned {
        position: absolute;

        width: anchor-size(--anchor width);
        height: anchor-size(--anchor height);

        background: green;

        z-index: 1;
    }
</style>

Test passes if no red is visible.

<div id="containing-block">
    <!--
        Both rectangles below overlaps.
        #anchor is red, #anchor-positioned is green and above #anchor in Z order.
        If no red is visible then #anchor-positioned has fully covered #anchor.
    -->
    <div id="anchor"></div>
    <div id="anchor-positioned"></div>
</div>