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rust_browser/tests/goldens/expected/282-iframe-style-isolation.layout.txt
Zachary D. Rowitsch b9380a8a03
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Fix inline line box height inflation that broke float two-column layouts
The strut half-leading calculation in apply_vertical_align used the
effective line height (inflated by tall inline-block elements like images)
instead of the CSS computed line-height. For a line with a 76px image and
CSS line-height: 15px, the strut got half_leading = (76 - font_height)/2
≈ 30, inflating descent by ~30px. This caused floated containers to
overflow their parents, leaking through shared BFC float contexts and
displacing sibling floats.

Fixes: pass CSS computed line-height separately for strut calculation;
also pass parent font family/weight/style for accurate strut metrics.
Adds float=left/right annotations to layout tree dumps for debugging.

32 WPT tests promoted from known_fail to pass. BMOW page sidebar moves
from x=73 to x=829 (correct float:right), content from y=4375 to y=114.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-15 02:36:00 -04:00

53 lines
1.9 KiB
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LayoutBox node=#1 tag=html box=block
content: (0, 0, 800, 243.842)
padding: 0 0 0 0
border: 0 0 0 0
margin: 0 0 0 0
LayoutBox node=#6 tag=body box=block
content: (8, 24, 784, 211.842)
padding: 0 0 0 0
border: 0 0 0 0
margin: 8 8 8 8
LayoutBox node=#7 tag=p box=block
content: (8, 24, 784, 28.800003)
padding: 0 0 0 0
border: 0 0 0 0
margin: 24 0 24 0
inline_context: 1 lines, height=28.800003, max_width=147.20705
line[0]: rect=(8, 24, 147.20705, 28.800001) fragments=2
frag[0]: rect=(8, 26.400002, 55.01321, 24) text="Parent" start=false end=false
frag[1]: rect=(67.59471, 26.400002, 87.612335, 24) text="paragraph" start=false end=false
LayoutBox node=#8 tag=anonymous box=anon
content: (0, -8, 147.20703, 24)
padding: 0 0 0 0
border: 0 0 0 0
margin: 0 0 0 0
text: "Parent paragraph"
LayoutBox node=#9 tag=(anonymous-block) box=block
content: (8, 76.8, 784, 159.04199)
padding: 0 0 0 0
border: 0 0 0 0
margin: 0 0 0 0
inline_context: 1 lines, height=159.04199, max_width=307.05432
line[0]: rect=(8, 76.8, 307.05432, 159.04199) fragments=1
frag[0]: rect=(8, 76.8, 304, 154) text=(none) start=false end=false
LayoutBox node=#9 tag=anonymous box=anon
content: (0, 16, 3.0543318, 16)
padding: 0 0 0 0
border: 0 0 0 0
margin: 0 0 0 0
text: " "
LayoutBox node=#10 tag=iframe box=inline-block
content: (10, 78.8, 300, 150)
padding: 0 0 0 0
border: 2 2 2 2
margin: 0 0 0 0
iframe: 300x150
inline_context: 0 lines, height=0, max_width=0
LayoutBox node=#11 tag=anonymous box=anon
content: (0, 16, 3.0543318, 16)
padding: 0 0 0 0
border: 0 0 0 0
margin: 0 0 0 0
text: " "