[webkit-changes] [WebKit/WebKit] 1d9bd3: [IFC][Partial layout] InlineItemsBuilder should be...

[Alan Baradlay]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 1d9bd34cbf6bd73b8dafbb3977c551147e004add
      https://github.com/WebKit/WebKit/commit/1d9bd34cbf6bd73b8dafbb3977c551147e004add
  Author: Alan Baradlay <zalan at apple.com>
  Date:   2023-02-17 (Fri, 17 Feb 2023)

  Changed paths:
    M Source/WebCore/layout/formattingContexts/inline/InlineFormattingContext.cpp
    M Source/WebCore/layout/formattingContexts/inline/InlineItemsBuilder.cpp
    M Source/WebCore/layout/formattingContexts/inline/InlineItemsBuilder.h
    M Source/WebCore/layout/formattingContexts/inline/InlineLineTypes.h

  Log Message:
  -----------
  [IFC][Partial layout] InlineItemsBuilder should be able to construct InlineItems for a subset of inline content
https://bugs.webkit.org/show_bug.cgi?id=252330

Reviewed by Antti Koivisto.

1. Inline content gets split up at soft wrap opportunities as the first step before running inline layout. We call these "runs" InlineItems.
2. The list of InlineItems is cached across subsequent layouts.
3. With partial layout (and damaged content) we need to be able to a (re-)create inline items by visiting only the damaged part of the inline tree.
In this patch InlineItemsBuilder takes the damage position and
- finds the first damaged inline item
- figures out the associated layout box position in the tree and sets up the layout queue accordingly.
(currently it (re-)constructs inline items starting from the damaged position all the way to the end of the inline content.
This needs to be turned into a proper range in order to support "insert" type of partial layout).

* Source/WebCore/layout/formattingContexts/inline/InlineFormattingContext.cpp:
(WebCore::Layout::InlineFormattingContext::layoutInFlowContent):
(WebCore::Layout::InlineFormattingContext::layoutInFlowContentForIntegration):
(WebCore::Layout::InlineFormattingContext::computedIntrinsicWidthConstraintsForIntegration):
(WebCore::Layout::InlineFormattingContext::computedIntrinsicWidthConstraints):
(WebCore::Layout::InlineFormattingContext::collectContentIfNeeded): Deleted.
* Source/WebCore/layout/formattingContexts/inline/InlineItemsBuilder.cpp:
(WebCore::Layout::InlineItemsBuilder::InlineItemsBuilder):
(WebCore::Layout::InlineItemsBuilder::build):
(WebCore::Layout::InlineItemsBuilder::collectInlineItems):
(WebCore::Layout::InlineItemsBuilder::breakAndComputeBidiLevels):
* Source/WebCore/layout/formattingContexts/inline/InlineItemsBuilder.h:

Canonical link: https://commits.webkit.org/260487@main