Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 679366a61a1d9d96ba355d5252de6df0c2280bf4
https://github.com/WebKit/WebKit/commit/679366a61a1d9d96ba355d5252de6df0c2280bf4
Author: Yulun Wu <[email protected]>
Date: 2025-10-02 (Thu, 02 Oct 2025)
Changed paths:
M Source/WebCore/layout/formattingContexts/grid/GridFormattingContext.cpp
M Source/WebCore/layout/formattingContexts/grid/GridLayout.cpp
M Source/WebCore/layout/formattingContexts/grid/GridLayout.h
M Source/WebCore/layout/formattingContexts/grid/ImplicitGrid.cpp
M Source/WebCore/layout/formattingContexts/grid/ImplicitGrid.h
M Source/WebCore/layout/formattingContexts/grid/UnplacedGridItem.cpp
M Source/WebCore/layout/formattingContexts/grid/UnplacedGridItem.h
Log Message:
-----------
[GFC] Definite position checking and span sizing.
https://bugs.webkit.org/show_bug.cgi?id=299390
<rdar://161194270>
Reviewed by Sammy Gill.
This change introduces the following changes in preperation for
placing items with a definite row position in step 2 of:
https://www.w3.org/TR/css-grid-1/#auto-placement-algo
1. hasDefiniteRowPosition to determine eligability for placement in step 2
of the grid auto placement algorithm.
2. an initial stub implementation of insertDefiniteRowItem with dense/sparse
styling information.
3.UnplacedGridItem::columnSpanSize() to compute the column size of an
UnplacedGridItem without explicit column start and end.
4. UnplacedGridItem::definiteRowStartEnd() to compute the start/end for
UnplacedGridItem without explicit row start and end.
Combined changes:
* Source/WebCore/layout/formattingContexts/grid/GridFormattingContext.cpp:
(WebCore::Layout::GridFormattingContext::constructUnplacedGridItems const):
* Source/WebCore/layout/formattingContexts/grid/GridLayout.cpp:
(WebCore::Layout::GridLayout::placeGridItems):
* Source/WebCore/layout/formattingContexts/grid/GridLayout.h:
* Source/WebCore/layout/formattingContexts/grid/ImplicitGrid.cpp:
(WebCore::Layout::ImplicitGrid::insertDefiniteRowItem):
* Source/WebCore/layout/formattingContexts/grid/ImplicitGrid.h:
* Source/WebCore/layout/formattingContexts/grid/UnplacedGridItem.cpp:
(WebCore::Layout::UnplacedGridItem::hasDefinitePosition const):
(WebCore::Layout::UnplacedGridItem::hasDefiniteRowPosition const):
(WebCore::Layout::UnplacedGridItem::hasAutoColumnPosition const):
(WebCore::Layout::UnplacedGridItem::columnSpanSize const):
(WebCore::Layout::UnplacedGridItem::hasDefiniteColumnPosition const):
* Source/WebCore/layout/formattingContexts/grid/UnplacedGridItem.h:
Canonical link: https://commits.webkit.org/300893@main
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