Source code
Revision control
Copy as Markdown
Other Tools
Test Info: Warnings
- This test has a WPT meta file that expects 10 subtest issues.
- This WPT test may be referenced by the following Test IDs:
- /css/css-anchor-position/anchor-position-dynamic-003.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<title>Tests that anchor layout changes in another BFC cause relayout on the anchored element</title>
<link rel="author" href="mailto:xiaochengh@chromium.org">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/check-layout-th.js"></script>
<script src="support/test-common.js"></script>
<style>
.containing-block {
position: absolute;
}
.anchor {
anchor-name: --a1;
width: 50px;
height: 70px;
background: orange;
}
.after .anchor {
width: 70px;
height: 50px;
}
.target {
position: absolute;
left: anchor(--a1 right);
top: anchor(--a1 bottom);
width: anchor-size(--a1 width);
height: anchor-size(--a1 height);
background: green;
}
/* Various types of BFC as the containing block of the anchor */
.float {
float: left;
}
.table {
display: table;
}
.inline-block {
display: inline-block;
vertical-align: bottom;
}
.contain {
contain: layout;
}
.scroller {
overflow: scroll;
width: 20px;
height: 20px;
}
</style>
<body>
<div class="containing-block">
<div class="float">
<div class="anchor"></div>
</div>
<div class="target"></div>
</div>
<div class="containing-block">
<div class="table">
<div class="anchor"></div>
</div>
<div class="target"></div>
</div>
<div class="containing-block">
<div class="inline-block">
<div class="anchor"></div>
</div>
<div class="target"></div>
</div>
<div class="containing-block">
<div class="contain">
<div class="anchor"></div>
</div>
<div class="target"></div>
</div>
<div class="containing-block">
<div class="scroller">
<div class="anchor"></div>
</div>
<div class="target"></div>
</div>
<script type="module">
for (const element of document.getElementsByClassName('target')) {
element.dataset.offsetX = '50';
element.dataset.offsetY = '70';
element.dataset.expectedWidth = '50';
element.dataset.expectedHeight = '70';
}
await checkLayoutForAnchorPos('.target', false);
document.body.classList.add('after');
for (const element of document.getElementsByClassName('target')) {
element.dataset.offsetX = '70';
element.dataset.offsetY = '50';
element.dataset.expectedWidth = '70';
element.dataset.expectedHeight = '50';
}
await checkLayoutForAnchorPos('.after .target', true);
</script>
</body>