RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-28 00:37:35 +00:00
Code Issues Activity Actions

LibWeb: Bring CSS line-height closer to other engines

Browse source 
This patch makes a few changes to the way we calculate line-height:

- `line-height: normal` is now resolved using metrics from the used
  font (specifically, round(A + D + lineGap)).

- `line-height: calc(...)` is now resolved at style compute time.

- `line-height` values are now absolutized at style compute time.

As a consequence of the above, we no longer need to walk the DOM
ancestor chain looking for line-heights during style computation.
Instead, values are inherited, resolved and absolutized locally.

This is not only much faster, but also makes our line-height metrics
match those of other engines like Gecko and Blink.
This commit is contained in:
Andreas Kling 2024-01-12 12:39:40 +01:00
parent f0722671c3
commit e7de5cb4d2
385 changed files with 6889 additions and 6893 deletions
Download patch file Download diff file Expand all files Collapse all files

4
Tests/LibWeb/Layout/expected/height-of-absolute-position-box-with-padding.txt
View file

@ -5,8 +5,8 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
BlockContainer <body> at (8,8) content-size 784x0 children: inline
TextNode <#text>
BlockContainer <h1> at (76.59375,103.765625) content-size 126x38 positioned [BFC] children: inline
line 0 width: 46.53125, height: 21.84375, bottom: 21.84375, baseline: 16.921875
frag 0 from TextNode start: 0, length: 4, rect: [116.59375,103.765625 46.53125x21.84375]
line 0 width: 46.53125, height: 22, bottom: 22, baseline: 17
frag 0 from TextNode start: 0, length: 4, rect: [116.59375,103.765625 46.53125x22]
"Test"
TextNode <#text>
TextNode <#text>