Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: cfba0b14d62853e5eba2ce72f1cdf85d93ea2fa1
      
https://github.com/WebKit/WebKit/commit/cfba0b14d62853e5eba2ce72f1cdf85d93ea2fa1
  Author: Alan Baradlay <za...@apple.com>
  Date:   2024-07-11 (Thu, 11 Jul 2024)

  Changed paths:
    A LayoutTests/fast/multicol/line-offset-after-widow-adjustment-expected.html
    A LayoutTests/fast/multicol/line-offset-after-widow-adjustment.html
    M Source/WebCore/layout/integration/inline/LayoutIntegrationLineLayout.cpp
    M Source/WebCore/layout/integration/inline/LayoutIntegrationPagination.cpp
    M Source/WebCore/layout/integration/inline/LayoutIntegrationPagination.h

  Log Message:
  -----------
  [Pagination] Huge vertical space on some books pages with widows
https://bugs.webkit.org/show_bug.cgi?id=276446
<rdar://130783404>

Reviewed by Antti Koivisto.

We use _accumulated_ offset to restart partial inline layout to deal with 
widows/orphans
which makes the start position of the "new content" incorrect when we arrive to 
this windows/orphans restart through multiple pages.

The fix is to keep track of the _actual_ offset where the new content is 
supposed to start taking widows/orphans into account.

* Source/WebCore/layout/integration/inline/LayoutIntegrationLineLayout.cpp:
(WebCore::LayoutIntegration::LineLayout::adjustContentForPagination):
* Source/WebCore/layout/integration/inline/LayoutIntegrationPagination.cpp:
(WebCore::LayoutIntegration::computeAdjustmentsForPagination):
* Source/WebCore/layout/integration/inline/LayoutIntegrationPagination.h:

Canonical link: https://commits.webkit.org/280856@main



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