[webkit-changes] [WebKit/WebKit] 45cb47: [IFC] Single character line layout should use a fa...

[Alan Baradlay]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 45cb47a1fb4cc926b588791461bf8977415559d1
      https://github.com/WebKit/WebKit/commit/45cb47a1fb4cc926b588791461bf8977415559d1
  Author: Alan Baradlay <zalan at apple.com>
  Date:   2025-02-25 (Tue, 25 Feb 2025)

  Changed paths:
    M Source/WebCore/layout/formattingContexts/inline/InlineLine.h
    M Source/WebCore/layout/formattingContexts/inline/TextOnlySimpleLineBuilder.cpp
    M Source/WebCore/layout/formattingContexts/inline/TextOnlySimpleLineBuilder.h

  Log Message:
  -----------
  [IFC] Single character line layout should use a fast path
https://bugs.webkit.org/show_bug.cgi?id=288431

Reviewed by Antti Koivisto.

When all we have is a single character in an IFC, line building/breaking becomes very straightforward. We can skip many steps and get away with not constructing a Line object.

* Source/WebCore/layout/formattingContexts/inline/InlineLine.h:
* Source/WebCore/layout/formattingContexts/inline/TextOnlySimpleLineBuilder.cpp:
(WebCore::Layout::TextOnlySimpleLineBuilder::layoutInlineContent):
(WebCore::Layout::TextOnlySimpleLineBuilder::placeSingleCharacterContentIfApplicable):
* Source/WebCore/layout/formattingContexts/inline/TextOnlySimpleLineBuilder.h:

Canonical link: https://commits.webkit.org/291021@main



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