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layout: Support start and end values for flexbox align-self (#33032)

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These are similar to `flex-start` and `flex-end`, but in `wrap-reverse`
situations, they are the opposite.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
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Martin Robinson 2024-08-15 10:20:41 +02:00 • committed by GitHub
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4 changed files with 200 additions and 9 deletions
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17
tests/wpt/meta/MANIFEST.json vendored
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@ -122594,6 +122594,19 @@
],
{}
]
],
"self-align-start-end-flex-001.html": [
"e8ce996f40dd985b8d4d064bdb1bca3e8dfba8a0",
[
null,
[
[
"/css/css-align/self-alignment/self-align-start-end-flex-001-ref.html",
"=="
]
],
{}
]
]
}
},
@ -393249,6 +393262,10 @@
"self-align-safe-unsafe-grid-003-ref.html": [
"0d0b17977d291bcc98874f34eb5364e819050dcc",
[]
],
"self-align-start-end-flex-001-ref.html": [
"1b8c2558c316b20177e5b6c6615193b7e9e978cf",
[]
]
}
},

70
tests/wpt/tests/css/css-align/self-alignment/self-align-start-end-flex-001-ref.html vendored Normal file
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@ -0,0 +1,70 @@
<!DOCTYPE html>
<!--
Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/
-->
<!-- Reference case for align-items / align-self behavior, using floated divs
in place of flex items and using margin-top in place of the align-items /
align-self properties. -->
<html>
<head>
<title>CSS Reftest Reference</title>
<link rel="author" title="Daniel Holbert" href="mailto:dholbert@mozilla.com"/>
<style>
.flexbox {
border: 1px dashed blue;
height: 200px;
width: 320px;
font-size: 10px;
line-height: 10px;
}
.flexbox > div {
width: 40px;
float: left;
}
.big {
height: 100px;
font-size: 20px;
line-height: 20px;
}
/* Classes for each of the various align-self values */
.flex-start {
background: lime;
}
.flex-end {
background: orange;
}
.start {
background: lightblue;
}
.end {
background: teal;
}
</style>
</head>
<body>
<div class="flexbox">
<div class="flex-start">start</div>
<div class="flex-start big">a b c d e f</div>
<div class="flex-end" style="margin-top: 190px">end</div>
<div class="flex-end big" style="margin-top: 100px">a b c d e f</div>
<div class="start">start</div>
<div class="start big">a b c d e f</div>
<div class="end" style="margin-top: 190px">end</div>
<div class="end big" style="margin-top: 100px">a b c d e f</div>
</div>
<div class="flexbox">
<div class="flex-start" style="margin-top: 190px">start</div>
<div class="flex-start big" style="margin-top: 100px">a b c d e f</div>
<div class="flex-end">end</div>
<div class="flex-end big" >a b c d e f</div>
<div class="start">start</div>
<div class="start big">a b c d e f</div>
<div class="end" style="margin-top: 190px">end</div>
<div class="end big" style="margin-top: 100px">a b c d e f</div>
</div>
</body>
</html>

93
tests/wpt/tests/css/css-align/self-alignment/self-align-start-end-flex-001.html vendored Normal file
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@ -0,0 +1,93 @@
<!DOCTYPE html>
<!--
Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/
-->
<!-- Testcase for align-items / align-self behavior, with all the possible
values included on different items within a flex container. -->
<html>
<head>
<title>CSS Test: Testing the behavior of 'align-self' 'start' and 'end' property values on flex items that are blocks, in a horizontal flex container</title>
<link rel="author" title="Daniel Holbert" href="mailto:dholbert@mozilla.com"/>
<link rel="author" title="Martin Robinson" href="mailto:mrobinson@igalia.com"/>
<link rel="author" title="Oriol Brufau" href="mailto:obrufau@igalia.com"/>
<link rel="help" href="http://www.w3.org/TR/css-flexbox-1/#align-items-property"/>
<link rel="match" href="self-align-start-end-flex-001-ref.html"/>
<style>
.flexbox {
border: 1px dashed blue;
height: 200px;
width: 320px;
display: flex;
font-size: 10px;
line-height: 10px;
/* Any children whose align-self is 'auto' (or unspecified, or
initial) will end up taking this value from us: */
align-items: center;
/* Any children whose align-self is 'inherit' will end up
inheriting this value from us: */
align-self: flex-end;
/* Ensure that this test works, no matter if the flexbox
container is considered multi-line or not. */
align-content: stretch;
}
.wrap-reverse {
flex-wrap: wrap-reverse;
}
.flexbox > div {
width: 40px;
}
.big {
height: 100px;
font-size: 20px;
line-height: 20px;
}
/* Classes for each of the various align-self values */
.flex-start {
background: lime;
align-self: flex-start;
}
.flex-end {
background: orange;
align-self: flex-end;
}
.start {
background: lightblue;
align-self: start;
}
.end {
background: teal;
align-self: end;
}
</style>
</head>
<body>
<div class="flexbox">
<div class="flex-start">start</div>
<div class="flex-start big">a b c d e f</div>
<div class="flex-end">end</div>
<div class="flex-end big">a b c d e f</div>
<div class="start">start</div>
<div class="start big">a b c d e f</div>
<div class="end">end</div>
<div class="end big">a b c d e f</div>
</div>
<div class="flexbox wrap-reverse">
<div class="flex-start">start</div>
<div class="flex-start big">a b c d e f</div>
<div class="flex-end">end</div>
<div class="flex-end big">a b c d e f</div>
<div class="start">start</div>
<div class="start big">a b c d e f</div>
<div class="end">end</div>
<div class="end big">a b c d e f</div>
</div>
</body>
</html>