[webkit-changes] [WebKit/WebKit] 781594: Avoid creating an InlineBoxPainter for root inline...

[Simon Fraser]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 7815943cfdcb6be9d3c59306cb4eab19246069e6
      https://github.com/WebKit/WebKit/commit/7815943cfdcb6be9d3c59306cb4eab19246069e6
  Author: Simon Fraser <simon.fraser at apple.com>
  Date:   2025-02-03 (Mon, 03 Feb 2025)

  Changed paths:
    M Source/WebCore/layout/integration/inline/LayoutIntegrationInlineContentPainter.cpp

  Log Message:
  -----------
  Avoid creating an InlineBoxPainter for root inline box if possible
https://bugs.webkit.org/show_bug.cgi?id=286873
rdar://144028573

Reviewed by Alan Baradlay.

There's some overhead involved in creating an `InlineBoxPainter`, e.g. computing `LineBox::isFirst()`,
and the InlineBoxPainter is only needed on the root inline box if there's ::first-line style,
so avoid creating one if we can.

* Source/WebCore/layout/integration/inline/LayoutIntegrationInlineContentPainter.cpp:
(WebCore::LayoutIntegration::InlineContentPainter::paintDisplayBox):

Canonical link: https://commits.webkit.org/289738@main



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