gecko-dev/layout/reftests/w3c-css/submitted/flexbox/flexbox-min-height-auto-004...

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<!DOCTYPE html>
<!--
Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/
-->
<html>
<head>
<meta charset="utf-8">
<title>CSS Test: Testing min-height:auto & 'overflow' interaction</title>
<link rel="author" title="Daniel Holbert" href="mailto:dholbert@mozilla.com">
<link rel="help" href="http://www.w3.org/TR/css-flexbox-1/#min-size-auto">
<link rel="match" href="flexbox-min-height-auto-004-ref.html">
<!--
This testcase checks how "overflow-x" indirectly impacts the sizing
behavior of flex items with "min-height:auto" (the new initial value
for "min-height"), via its influence on "overflow-y".
In particular, the flex-item-specific "min-height:auto" behavior is
supposed to be disabled (e.g. we end up with min-height:0) when
"overflow-y" is non-"visible". Moreover, when "overflow-x" is set to a
scrolling value, it forces "overflow-y" to compute to a scrolling value
as well, as described at
http://www.w3.org/TR/css-overflow-3/#overflow-properties
So, "overflow-x" has an indirect effect (via "overflow-y") here.
-->
<style>
.flexbox {
display: flex;
flex-direction: column;
height: 30px; /* Shrink flex items below min-height */
margin-right: 2px; /* (Just for spacing things out, visually) */
float: left;
}
.flexbox > * {
/* Flex items have purple border: */
border: 2px dotted purple;
}
.flexbox > * > * {
/* Flex items' contents are gray & fixed-size: */
background: gray;
width: 40px;
height: 80px;
}
.xvisible { overflow-x: visible; }
.xhidden { overflow-x: hidden; }
.xscroll { overflow-x: scroll; }
.xauto { overflow-x: auto; }
</style>
</head>
<body>
<!-- min-height:auto should prevent shrinking below intrinsic height when
the flex item has "overflow-x: visible", but not for any other
overflow-x values (because of overflow-x's influence on overflow-y).
-->
<div class="flexbox"><div class="xvisible"><div></div></div></div>
<div class="flexbox"><div class="xhidden"><div></div></div></div>
<div class="flexbox"><div class="xscroll"><div></div></div></div>
<div class="flexbox"><div class="xauto"><div></div></div></div>
</body>
</html>