b9380a8a03
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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>
33 lines
1.0 KiB
Plaintext
33 lines
1.0 KiB
Plaintext
LayoutBox node=#1 tag=html box=block
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content: (0, 0, 800, 71.04199)
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padding: 0 0 0 0
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border: 0 0 0 0
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margin: 0 0 0 0
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LayoutBox node=#3 tag=body box=block
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content: (8, 8, 784, 55.041996)
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padding: 0 0 0 0
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border: 0 0 0 0
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margin: 8 8 8 8
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inline_context: 1 lines, height=55.041996, max_width=53.054333
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line[0]: rect=(8, 8, 53.054333, 55.041996) fragments=1
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frag[0]: rect=(8, 8, 50, 50) text=(none) start=false end=false
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LayoutBox node=#4 tag=anonymous box=anon
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content: (0, 0, 3.0543318, 16)
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padding: 0 0 0 0
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border: 0 0 0 0
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margin: 0 0 0 0
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text: " "
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LayoutBox node=#5 tag=img box=inline-block
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content: (8, 8, 50, 50)
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padding: 0 0 0 0
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border: 0 0 0 0
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margin: 0 0 0 0
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image: img#0 (intrinsic: 100x50)
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inline_context: 0 lines, height=0, max_width=0
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LayoutBox node=#6 tag=anonymous box=anon
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content: (0, 0, 3.0543318, 16)
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padding: 0 0 0 0
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border: 0 0 0 0
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margin: 0 0 0 0
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text: " "
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