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LibWeb: Don't lose track of inline margins when collapsing whitespace

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When iterating inline level chunks for a piece of text like " hello ",
we will get three separate items from InlineLevelIterator:

- Text " "
- Text "hello"
- Text " "

If the first item also had some leading margin (e.g margin-left: 10px)
we would lose that information when deciding that the whitespace is
collapsible.

This patch fixes the issue by accumulating the amount of leading margin
present in any collapsed whitespace items, and then adding them to the
next non-whitespace item in IFC.

It's a wee bit hackish, but so is the rest of the leading/trailing
margin mechanism.

This makes the header menu on https://www.gimp.org/ look proper. :^)
This commit is contained in:
Andreas Kling 2024-01-20 20:15:09 +01:00
parent c1161111a7
commit 1041dbb007
3 changed files with 39 additions and 0 deletions
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20
Tests/LibWeb/Layout/expected/block-and-inline/leading-margin-on-inline-content-that-starts-with-collapsible-whitespace.txt Normal file
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Viewport <#document> at (0,0) content-size 800x600 children: not-inline
BlockContainer <html> at (0,0) content-size 800x33 [BFC] children: not-inline
BlockContainer <body> at (8,8) content-size 784x17 children: inline
InlineNode <div>
frag 0 from TextNode start: 1, length: 9, rect: [28,8 82.125x17] baseline: 13.296875
"Download "
TextNode <#text>
InlineNode <div>
frag 0 from TextNode start: 1, length: 4, rect: [150,8 39.5625x17] baseline: 13.296875
"News"
TextNode <#text>
TextNode <#text>
ViewportPaintable (Viewport<#document>) [0,0 800x600]
PaintableWithLines (BlockContainer<HTML>) [0,0 800x33]
PaintableWithLines (BlockContainer<BODY>) [8,8 784x17]
InlinePaintable (InlineNode<DIV>)
TextPaintable (TextNode<#text>)
InlinePaintable (InlineNode<DIV>)
TextPaintable (TextNode<#text>)