Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 77aa3f4f6c75fcb8e96fab616f7b06fcbdb71a5a
      
https://github.com/WebKit/WebKit/commit/77aa3f4f6c75fcb8e96fab616f7b06fcbdb71a5a
  Author: Alan Baradlay <[email protected]>
  Date:   2025-11-05 (Wed, 05 Nov 2025)

  Changed paths:
    A LayoutTests/fast/inline/blocks-in-inline-layout3-expected.html
    A LayoutTests/fast/inline/blocks-in-inline-layout3.html
    M Source/WebCore/layout/formattingContexts/inline/InlineLine.cpp
    M Source/WebCore/layout/formattingContexts/inline/InlineLineBoxBuilder.cpp
    M Source/WebCore/layout/formattingContexts/inline/display/InlineDisplayBox.h
    M 
Source/WebCore/layout/formattingContexts/inline/display/InlineDisplayContentBuilder.cpp
    M 
Source/WebCore/layout/formattingContexts/inline/display/InlineDisplayContentBuilder.h
    M Source/WebCore/layout/integration/LayoutIntegrationBoxTreeUpdater.cpp

  Log Message:
  -----------
  [blocks-in-inline] Block level elements need special handling in 
LineBoxBuilder
https://bugs.webkit.org/show_bug.cgi?id=301953#

Reviewed by Antti Koivisto.

Let's special-case when the line has nothing but one single block level element.
(LineBox helps to align and position inline level boxes -block level element 
does not need any of that.)

Test: fast/inline/blocks-in-inline-layout3.html

* LayoutTests/fast/inline/blocks-in-inline-layout3-expected.html: Added.
* LayoutTests/fast/inline/blocks-in-inline-layout3.html: Added.
* Source/WebCore/layout/formattingContexts/inline/InlineLine.cpp:
(WebCore::Layout::Line::appendBlock): Ensure we've got a single block run on 
the line.
* Source/WebCore/layout/formattingContexts/inline/InlineLineBoxBuilder.cpp:
(WebCore::Layout::LineBoxBuilder::build):
(WebCore::Layout::LineBoxBuilder::constructInlineLevelBoxes):
* Source/WebCore/layout/formattingContexts/inline/display/InlineDisplayBox.h:
(WebCore::InlineDisplay::Box::isBlockLevelBox const):
* 
Source/WebCore/layout/formattingContexts/inline/display/InlineDisplayContentBuilder.cpp:
(WebCore::Layout::InlineDisplayContentBuilder::appendAtomicInlineLevelDisplayBox):
(WebCore::Layout::InlineDisplayContentBuilder::appendBlockLevelDisplayBox):
(WebCore::Layout::InlineDisplayContentBuilder::processNonBidiContent):
* 
Source/WebCore/layout/formattingContexts/inline/display/InlineDisplayContentBuilder.h:
* Source/WebCore/layout/integration/LayoutIntegrationBoxTreeUpdater.cpp:
(WebCore::LayoutIntegration::showInlineContent):

Canonical link: https://commits.webkit.org/302599@main



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