gecko-dev/layout/reftests/flexbox/flexbox-align-self-vert-4-ref.xhtml
Daniel Holbert a3cb31110c Bug 666041: Reftests for css3-flexbox. (tests-only)
--HG--
rename : layout/reftests/bugs/solidblue.png => layout/reftests/flexbox/solidblue.png
2012-09-29 23:42:29 -07:00

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3.6 KiB
HTML

<?xml version="1.0" encoding="UTF-8"?>
<!--
Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/
-->
<!-- Reference case for align-items / align-self behavior, using blocks in
place of flex items and using float and width keywords to emulate the
align-items / align-self properties. -->
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<style>
.flexbox {
border: 1px dashed blue;
width: 4px;
float: left;
font-family: sans-serif;
font-size: 10px;
margin-left: 80px;
}
.flex-start, .flex-end, .center, .baseline, .stretch {
clear: both;
margin: 1px 2px 3px 4px;
border-width: 2px 3px 4px 5px;
padding: 3px 4px 5px 6px;
border-style: dotted;
}
div.big {
font-size: 18px;
width: 50px;
}
/* Classes for each of the various align-self values */
.flex-start {
background: lime;
width: -moz-max-content;
float: left;
}
.flex-end {
background: orange;
width: -moz-max-content;
float: right;
}
.center {
background: lightblue;
width: -moz-max-content;
}
.baseline {
background: teal;
width: -moz-max-content;
}
.stretch {
background: pink;
width: auto;
}
</style>
</head>
<body>
<div class="flexbox">
<div class="flex-start">start</div>
<div class="flex-start big">a b</div>
<div class="flex-end">end</div>
<div class="flex-end big" style="margin-bottom: 4px">a b</div>
<!-- We're using auto margins as references for "align-self:center", but
auto margins only work if we've got extra space available, and we
don't have extra space available in this case. So, we create a
wide wrapper-div that _will_ have space available. We position
that wrapper-div using a negative margin, so that centering in it
is equivalent to centering in our reference for the flex container.
-->
<div style="width: 100px; margin-left: -48px">
<div style="margin: auto; width: -moz-max-content">
<div class="center">center</div>
</div>
<div style="margin: auto; width: -moz-max-content">
<div class="center big" style="margin-top: 4px">a b</div>
</div>
</div>
</div>
<!-- NOTE: I'm not using floats in this flex container, since floating
makes it harder to emulate the "stretch" behavior.
(We need to use width: auto - not width:100% - because we need to
allow space for our margins/borders/padding. And width:auto doesn't do
what we want if we're floated.)
However, since our children aren't floated, their adjacent vertical
margins will collapse by default (which doesn't match what happens in
the testcase, since margins don't collapse in a flexbox). So, we
compensate for that by bumping up the margin-top value on every
collapsed top-margin to "4px", which is the total amount of vertical
margin we're expecting between consecutive flex items in the testcase.
(4px = 3px margin-bottom + 1px margin-top)
-->
<div class="flexbox">
<div class="baseline">base</div>
<div class="baseline big" style="margin-top: 4px">abc</div>
<div class="stretch" style="margin-top: 4px">stretch</div>
<div class="stretch big" style="margin-top: 4px">a b</div>
</div>
</body>
</html>