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LibWeb: Zero out margins if width is not 'auto' in BFC's compute_width
Reverse the condition to satisfy the spec comment. Probably a typo. A 3 year old typo! :^)
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sideshowbarker
2024-07-16 23:57:20 +09:00
Author: https://github.com/0GreenClover0 🔰 Commit: https://github.com/SerenityOS/serenity/commit/8bb2663a22 Pull-request: https://github.com/SerenityOS/serenity/pull/18653
@ -0,0 +1,15 @@
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Viewport <#document> at (0,0) content-size 800x600 children: not-inline
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BlockContainer <html> at (1,1) content-size 798x0 [BFC] children: not-inline
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BlockContainer <body> at (10,10) content-size 102x57.34375 positioned [BFC] children: not-inline
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BlockContainer <div#container> at (11,11) content-size 100x55.34375 children: not-inline
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BlockContainer <div#child> at (72,12) content-size 50x53.34375 children: inline
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line 0 width: 28.40625, height: 17.46875, bottom: 17.46875, baseline: 13.53125
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frag 0 from TextNode start: 0, length: 4, rect: [72,12 28.40625x17.46875]
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"well"
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line 1 width: 36.84375, height: 17.9375, bottom: 35.40625, baseline: 13.53125
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frag 0 from TextNode start: 5, length: 5, rect: [72,29 36.84375x17.46875]
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"hello"
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line 2 width: 55.359375, height: 18.40625, bottom: 53.34375, baseline: 13.53125
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frag 0 from TextNode start: 11, length: 7, rect: [72,46 55.359375x17.46875]
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"friends"
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TextNode <#text>
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@ -0,0 +1,6 @@
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<!doctype html><style>
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* { border: 1px solid black; font-family: 'SerenitySans'; }
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body { position: absolute; }
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#container { width: 100px; }
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#child { width: 50px; padding-left: 60px; padding-right: 60px; margin-right: auto; margin-left: auto; }
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</style><body><div id="container"><div id="child">well hello friends</div>
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@ -181,7 +181,7 @@ void BlockFormattingContext::compute_width(Box const& box, AvailableSpace const&
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if (!box.is_inline()) {
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// 10.3.3 Block-level, non-replaced elements in normal flow
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// If 'width' is not 'auto' and 'border-left-width' + 'padding-left' + 'width' + 'padding-right' + 'border-right-width' (plus any of 'margin-left' or 'margin-right' that are not 'auto') is larger than the width of the containing block, then any 'auto' values for 'margin-left' or 'margin-right' are, for the following rules, treated as zero.
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if (width.is_auto() && total_px > width_of_containing_block) {
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if (!width.is_auto() && total_px > width_of_containing_block) {
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if (margin_left.is_auto())
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margin_left = zero_value;
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if (margin_right.is_auto())
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