<!DOCTYPE html>
<html>
<head>
<style>
div {
width: 50px;
height: 50px;
}
#container {
overflow: scroll;
width: 100px;
height: 100px;
border: 1px solid black;
}
iframe {
padding: 5px;
border: 1px solid black;
}
.scrolled {
position: relative;
margin: 10px;
background-color: green;
}
.float {
float: right;
position: relative;
margin: 10px;
background-color: green;
}
.fixed {
position: fixed;
top: 200px;
left: 200px;
margin: 10px;
background-color: blue;
}
.neg-z-order {
z-index: -1;
}
.stacking-context {
position: relative;
z-index: 1;
}
</style>
<script>
if (window.testRunner)
testRunner.dumpAsText(false);
if (window.internals) {
internals.settings.setPreferCompositingToLCDTextEnabled(true);
}
</script>
</head>
<body>
<div id="container">
<div class="float">
<!--
This iframe should not have a scroll parent because its
parent (class="float") has a scroll parent and this would
be redundant.
-->
<iframe src="resources/composited-subframe.html"></iframe>
</div>
<div class="float stacking-context">
<!--
This iframe should not have a scroll parent because its
parent (class="float") has a scroll parent and this would
be redundant.
-->
<iframe class="stacking-context" src="resources/composited-subframe.html"></iframe>
</div>
<!--
The problem here is that this iframe thinks it has a scroll parent, even though
it would totally be parented under its scroll parent since it's normal flow.
This is one of those rare cases where we have a composited layer in the normal
flow list.
-->
<iframe src="resources/composited-subframe.html"></iframe>
<div class="fixed neg-z-order"></div>
<div class="scrolled neg-z-order"></div>
<div class="scrolled"></div>
<div class="scrolled"></div>
<div class="scrolled"></div>
</div>
<pre id="layers">Pass -- this test passes if it does not crash.</pre>
</body>
</html>
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