Skip to content

WebKit export of https://bugs.webkit.org/show_bug.cgi?id=321124 #64188

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
annevk wants to merge 1 commit into
base: master
Choose a base branch
from
Open

WebKit export of https://bugs.webkit.org/show_bug.cgi?id=321124 #64188

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
36 changes: 36 additions & 0 deletions css/CSS2/visudet/inline-block-baseline-with-block-in-inline-001.html
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,36 @@
<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Test: the baseline of an inline-block whose last line box holds a block level box</title>
<link rel="help" href="https://www.w3.org/TR/CSS22/visudet.html#line-height">
<link rel="help" href="https://www.w3.org/TR/CSS22/visuren.html#inline-formatting">
<meta name="assert" content="The baseline of an inline-block is the baseline of its last line box. When that line box holds a block level box, the exported baseline must include the offset of that line within the inline-block, not just the block's own baseline.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<link rel="stylesheet" href="/fonts/ahem.css">
<style>
body { margin: 0; }
#container { font: 20px/20px Ahem; }
#inlineBlock { display: inline-block; }
</style>
<div id="container"><div id="inlineBlock"><br><span><div id="block">x</div></span></div><span id="after">after</span></div>

<script>
const rect = id => document.getElementById(id).getBoundingClientRect();
const topOf = id => rect(id).top - rect("container").top;

test(() => {
assert_equals(document.getElementById("inlineBlock").offsetHeight, 40,
"two 20px line boxes: the line break and the block level box");
}, "The inline-block is as tall as its two line boxes");

test(() => {
assert_equals(topOf("block"), 20, "the block level box is on the second line box");
}, "The block level box sits on the inline-block's last line box");

test(() => {
// Ahem's ascent is 0.8em, so a 20px line puts the baseline 16px down. The inline-block's baseline is the
// second line's, at 20 + 16 = 36, and #after's own baseline sits 16px into its box.
assert_equals(topOf("after"), 20,
"the text after the inline-block is aligned to the inline-block's last line box baseline");
}, "An inline-block whose last line box holds a block level box exports that line's baseline");
</script>