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LibWeb: Improve the line breaking algorithm

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Check the width of the next token after white space to decide line
breaks. The next width can also be the total width of multiple tokens.
This better follows the CSS Text specification and matches behavior of
other browsers.

Fixes #20388.
This commit is contained in:
Andi Gallo 2023-08-19 03:36:53 +00:00 • committed by Andreas Kling
parent 33b133d3f4
commit 3d7e788981
9 changed files with 227 additions and 13 deletions
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58
Tests/LibWeb/Layout/expected/table/line-breaking-in-cells.txt Normal file
View file

@ -0,0 +1,58 @@
Viewport <#document> at (0,0) content-size 800x600 children: not-inline
BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
BlockContainer <body> at (8,8) content-size 784x39.40625 children: not-inline
TableWrapper <(anonymous)> at (8,8) content-size 61x39.40625 [BFC] children: not-inline
Box <table> at (8,8) content-size 61x39.40625 table-box [TFC] children: not-inline
BlockContainer <(anonymous)> (not painted) children: inline
TextNode <#text>
Box <tbody> at (8,8) content-size 61x39.40625 table-row-group children: not-inline
BlockContainer <(anonymous)> (not painted) children: inline
TextNode <#text>
Box <tr> at (8,8) content-size 61x39.40625 table-row children: not-inline
BlockContainer <(anonymous)> (not painted) children: inline
TextNode <#text>
BlockContainer <td> at (10,18.96875) content-size 14.296875x17.46875 table-cell [BFC] children: inline
line 0 width: 14.265625, height: 17.46875, bottom: 17.46875, baseline: 13.53125
frag 0 from TextNode start: 0, length: 1, rect: [10,18.96875 14.265625x17.46875]
"A"
TextNode <#text>
BlockContainer <(anonymous)> (not painted) children: inline
TextNode <#text>
BlockContainer <td> at (28.296875,10) content-size 20.40625x35.40625 table-cell [BFC] children: inline
line 0 width: 9.34375, height: 17.46875, bottom: 17.46875, baseline: 13.53125
frag 0 from TextNode start: 1, length: 1, rect: [28.296875,10 9.34375x17.46875]
"B"
line 1 width: 10.3125, height: 17.9375, bottom: 35.40625, baseline: 13.53125
frag 0 from TextNode start: 0, length: 1, rect: [28.296875,27 10.3125x17.46875]
"C"
TextNode <#text>
BreakNode <br>
TextNode <#text>
BlockContainer <(anonymous)> (not painted) children: inline
TextNode <#text>
BlockContainer <td> at (52.703125,18.96875) content-size 14.296875x17.46875 table-cell [BFC] children: inline
line 0 width: 11.140625, height: 17.46875, bottom: 17.46875, baseline: 13.53125
frag 0 from TextNode start: 1, length: 1, rect: [52.703125,18.96875 11.140625x17.46875]
"D"
TextNode <#text>
BlockContainer <(anonymous)> (not painted) children: inline
TextNode <#text>
BlockContainer <(anonymous)> (not painted) children: inline
TextNode <#text>
BlockContainer <(anonymous)> (not painted) children: inline
TextNode <#text>
ViewportPaintable (Viewport<#document>) [0,0 800x600]
PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
PaintableWithLines (BlockContainer<BODY>) [8,8 784x39.40625]
PaintableWithLines (TableWrapper(anonymous)) [8,8 61x39.40625]
PaintableBox (Box<TABLE>) [8,8 61x39.40625]
PaintableBox (Box<TBODY>) [8,8 61x39.40625]
PaintableBox (Box<TR>) [8,8 61x39.40625]
PaintableWithLines (BlockContainer<TD>) [8,8 18.296875x39.40625]
TextPaintable (TextNode<#text>)
PaintableWithLines (BlockContainer<TD>) [26.296875,8 24.40625x39.40625]
TextPaintable (TextNode<#text>)
TextPaintable (TextNode<#text>)
PaintableWithLines (BlockContainer<TD>) [50.703125,8 18.296875x39.40625]
TextPaintable (TextNode<#text>)