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rust_browser/tests/goldens/expected/193-abspos-inline-ifc.layout.txt
Zachary D. Rowitsch 1ca50684c8
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Fix float+SC invisible elements and abs-pos inline IFC rendering
Three display list / layout bugs fixed:

1. Float+stacking-context elements were invisible ("triple skip"):
   collect_stacking_participants unconditionally skipped all floats,
   even those creating stacking contexts. Now only skips simple floats.
   (CSS 2.1 Appendix E steps 2/7)

2. Abs-pos inline children inside IFCs were never laid out or rendered:
   - Layout: FormattingContext::Inline now collects abs-pos/fixed children
     into pending_absolutes for deferred layout
   - Display list: render_non_inline_descendants renders abs-pos/fixed
     inline children via render_layout_box_normal

3. Stacking context anonymous text children were double-painted:
   render_stacking_context now skips Anonymous children when the parent
   has an IFC (they're already rendered by the IFC fragment system)

Also adds guards against abs-pos inline + z-index double-render, and
promotes WPT test static-position-inline-level-absolute-in-block-level-
context-013 from known_fail to pass.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-03 09:30:17 -05:00

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LayoutBox node=#2 tag=html box=block
content: (0, 0, 800, 0)
padding: 0 0 0 0
border: 0 0 0 0
margin: 0 0 0 0
LayoutBox node=#10 tag=body box=block
content: (0, 0, 800, 0)
padding: 0 0 0 0
border: 0 0 0 0
margin: 0 0 0 0
LayoutBox node=#14 tag=div box=block
content: (0, 0, 400, 0)
padding: 0 0 0 0
border: 0 0 0 0
margin: 0 0 0 0
inline_context: 0 lines, height=0, max_width=0
LayoutBox node=#15 tag=anonymous box=anon
content: (0, 0, 2.6725404, 14)
padding: 0 0 0 0
border: 0 0 0 0
margin: 0 0 0 0
text: " "
LayoutBox node=#16 tag=span box=inline
content: (0, 0, 112.640976, 13.200001)
padding: 0 0 0 0
border: 0 0 0 0
margin: 0 0 0 0
inline_context: 1 lines, height=13.200001, max_width=112.640976
line[0]: rect=(0, 0, 112.640976, 13.200001) fragments=5
frag[0]: rect=(0, 1.1000004, 26.078564, 11) text="Posted" start=false end=false
frag[1]: rect=(28.178417, 1.1000004, 9.085903, 11) text="by" start=false end=false
frag[2]: rect=(39.364174, 1.1000004, 26.280472, 11) text="Author" start=true end=true
frag[3]: rect=(67.7445, 1.1000004, 9.877386, 11) text="on" start=false end=false
frag[4]: rect=(79.72174, 1.1000004, 30.819386, 11) text="Monday" start=false end=false
LayoutBox node=#17 tag=anonymous box=anon
content: (0, 0, 0, 0)
padding: 0 0 0 0
border: 0 0 0 0
margin: 0 0 0 0
text: " Posted by "
LayoutBox node=#18 tag=a box=inline
content: (0, 0, 0, 0)
padding: 0 0 0 0
border: 0 0 0 0
margin: 0 0 0 0
LayoutBox node=#19 tag=anonymous box=anon
content: (0, 0, 0, 0)
padding: 0 0 0 0
border: 0 0 0 0
margin: 0 0 0 0
text: "Author"
LayoutBox node=#20 tag=anonymous box=anon
content: (0, 0, 0, 0)
padding: 0 0 0 0
border: 0 0 0 0
margin: 0 0 0 0
text: " on Monday "
LayoutBox node=#21 tag=anonymous box=anon
content: (0, 0, 2.6725404, 14)
padding: 0 0 0 0
border: 0 0 0 0
margin: 0 0 0 0
text: " "