gecko-dev/layout/reftests/image/image-object-position-with-...

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<!DOCTYPE html>
<!--
Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/
-->
<!--
This testcase ensures that we paint the background around an opaque image,
when the image is offset from the container via 'object-position'. This is
an interesting case because, by default, images fill their container,
which means we can often optimize away the background completely. BUT, if
"object-position" offsets the image from its container's content-box, we
can't optimize away the background; it need to be painted in the uncovered
area.
-->
<html>
<head>
<meta charset="utf-8">
<style type="text/css">
.test {
background: salmon;
object-position: 5px 5px;
width: 32px;
height: 32px;
display: block;
margin-bottom: 2px;
}
</style>
</head>
<body>
<img class="test" src="blue-32x32.png">
<embed class="test" src="blue-32x32.png">
<object class="test" data="blue-32x32.png"></object>
<video class="test" poster="blue-32x32.png"></video>
</body>
</html>