[webkit-changes] [WebKit/WebKit] 83e529: [IFC][Partial layout] Compute repaint rect for par...

[Alan Baradlay]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 83e52933a2861f8f1d0acdc2365707e184974feb
      https://github.com/WebKit/WebKit/commit/83e52933a2861f8f1d0acdc2365707e184974feb
  Author: Alan Baradlay <zalan at apple.com>
  Date:   2023-03-01 (Wed, 01 Mar 2023)

  Changed paths:
    M Source/WebCore/layout/integration/inline/LayoutIntegrationLineLayout.cpp
    M Source/WebCore/layout/integration/inline/LayoutIntegrationLineLayout.h
    M Source/WebCore/rendering/RenderBlockFlow.cpp

  Log Message:
  -----------
  [IFC][Partial layout] Compute repaint rect for partial damage
https://bugs.webkit.org/show_bug.cgi?id=253050

Reviewed by Antti Koivisto.

When we stop destroying LineLayout eagerly at line layout path invalidation, std::optional<LayoutRect> should be turned into LayoutRect and use it as the source of truth for repaints.

* Source/WebCore/layout/integration/inline/LayoutIntegrationLineLayout.cpp:
(WebCore::LayoutIntegration::LineLayout::layout):
(WebCore::LayoutIntegration::LineLayout::constructContent):
* Source/WebCore/layout/integration/inline/LayoutIntegrationLineLayout.h:
* Source/WebCore/rendering/RenderBlockFlow.cpp:
(WebCore::RenderBlockFlow::layoutModernLines):

Canonical link: https://commits.webkit.org/261010@main