Skip to content

GitLab

T
tangled
Commit af4fdff6 authored by Philip Rogers's avatar Philip Rogers Committed by Commit Bot
Browse files
Options

Will-change: opacity should create a stacking context for inlines 

The spec [1] states that will-change: opacity should create a stacking
context for inlines in the same way that non-zero opacity does. This was
fixed by https://crrev.com/776581 ("Unify CSS grouping properties") but
we didn't have a testcase. This patch adds a WPT test of this behavior.

[1] https://drafts.csswg.org/css-will-change/#will-change

Bug: 1119651
Change-Id: I7abd4006b61039d9302f8ac9036848aeb37df476
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2370095
Commit-Queue: Xianzhu Wang <wangxianzhu@chromium.org>
Auto-Submit: Philip Rogers <pdr@chromium.org>
Reviewed-by: default avatarXianzhu Wang <wangxianzhu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#800845}
parent 98884a17
Show whitespace changes
Inline Side-by-side
Showing with 47 additions and 0 deletions
third_party/blink/web_tests/external/wpt/css/css-will-change/will-change-stacking-context-003-ref.html 0 → 100644
View file @ af4fdff6
<!doctype html>
<meta charset="utf-8">
<title>CSS Test Reference</title>
<style>
div {
background: green;
width: 100px;
height: 100px;
}
</style>
<div></div>
third_party/blink/web_tests/external/wpt/css/css-will-change/will-change-stacking-context-003.html 0 → 100644
View file @ af4fdff6
<!doctype html>
<meta charset="utf-8">
<title>CSS Test: will-change: opacity should create a stacking context for inlines.</title>
<link rel="author" title="Philip Rogers" href="mailto:pdr@chromium.org">
<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=1119651">
<link rel="help" href="https://drafts.csswg.org/css-will-change/#will-change">
<link rel="match" href="will-change-stacking-context-003-ref.html">
<style>
.indicator {
position: absolute;
width: 100px;
height: 100px;
background: green;
z-index: 1;
}
.will-change-opacity {
will-change: opacity;
width: 100px;
height: 100px;
}
.top {
position: absolute;
width: 100px;
height: 100px;
background: red;
z-index: 3;
}
</style>
<div class="indicator"></div>
<span class="will-change-opacity">
<!-- Because will-change: opacity creates a stacking context, this child
remains on bottom even though it has a higher z-index than the indicator
box. -->
<div class="top"></div>
</span>
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment