213 lines
11 KiB
C++
213 lines
11 KiB
C++
/*
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* Copyright (C) 2011 Apple Inc. All rights reserved.
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* Copyright (C) 2013-2017 Igalia S.L.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "Grid.h"
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#include "GridTrackSizingAlgorithm.h"
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#include "RenderBlock.h"
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namespace WebCore {
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class GridArea;
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class GridSpan;
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struct ContentAlignmentData {
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WTF_MAKE_NONCOPYABLE(ContentAlignmentData); WTF_MAKE_FAST_ALLOCATED;
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public:
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ContentAlignmentData() = default;
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bool isValid() const { return positionOffset >= 0 && distributionOffset >= 0; }
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LayoutUnit positionOffset;
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LayoutUnit distributionOffset;
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};
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enum GridAxisPosition {GridAxisStart, GridAxisEnd, GridAxisCenter};
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class RenderGrid final : public RenderBlock {
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WTF_MAKE_ISO_ALLOCATED(RenderGrid);
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public:
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RenderGrid(Element&, RenderStyle&&);
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virtual ~RenderGrid();
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Element& element() const { return downcast<Element>(nodeForNonAnonymous()); }
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void styleDidChange(StyleDifference, const RenderStyle* oldStyle) override;
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void layoutBlock(bool relayoutChildren, LayoutUnit pageLogicalHeight = 0_lu) override;
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bool avoidsFloats() const override { return true; }
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bool canDropAnonymousBlockChild() const override { return false; }
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void dirtyGrid();
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Vector<LayoutUnit> trackSizesForComputedStyle(GridTrackSizingDirection) const;
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const Vector<LayoutUnit>& columnPositions() const { return m_columnPositions; }
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const Vector<LayoutUnit>& rowPositions() const { return m_rowPositions; }
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unsigned autoRepeatCountForDirection(GridTrackSizingDirection direction) const { return m_grid.autoRepeatTracks(direction); }
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unsigned explicitGridStartForDirection(GridTrackSizingDirection direction) const { return m_grid.explicitGridStart(direction); }
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// Required by GridTrackSizingAlgorithm. Keep them under control.
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LayoutUnit guttersSize(const Grid&, GridTrackSizingDirection, unsigned startLine, unsigned span, std::optional<LayoutUnit> availableSize) const;
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LayoutUnit gridItemOffset(GridTrackSizingDirection) const;
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void updateGridAreaLogicalSize(RenderBox&, std::optional<LayoutUnit> width, std::optional<LayoutUnit> height) const;
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bool isBaselineAlignmentForChild(const RenderBox&) const;
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bool isBaselineAlignmentForChild(const RenderBox& child, GridAxis, AllowedBaseLine = BothLines) const;
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StyleSelfAlignmentData selfAlignmentForChild(GridAxis, const RenderBox&, const RenderStyle* = nullptr) const;
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StyleContentAlignmentData contentAlignment(GridTrackSizingDirection) const;
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private:
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ItemPosition selfAlignmentNormalBehavior(const RenderBox* child = nullptr) const override
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{
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ASSERT(child);
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return child->isRenderReplaced() ? ItemPosition::Start : ItemPosition::Stretch;
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}
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const char* renderName() const override;
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bool isRenderGrid() const override { return true; }
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void computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const override;
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bool selfAlignmentChangedToStretch(GridAxis, const RenderStyle& oldStyle, const RenderStyle& newStyle, const RenderBox&) const;
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bool selfAlignmentChangedFromStretch(GridAxis, const RenderStyle& oldStyle, const RenderStyle& newStyle, const RenderBox&) const;
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std::optional<LayoutUnit> availableSpaceForGutters(GridTrackSizingDirection) const;
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bool explicitGridDidResize(const RenderStyle&) const;
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bool namedGridLinesDefinitionDidChange(const RenderStyle&) const;
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unsigned computeAutoRepeatTracksCount(GridTrackSizingDirection, std::optional<LayoutUnit> availableSize) const;
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unsigned clampAutoRepeatTracks(GridTrackSizingDirection, unsigned autoRepeatTracks) const;
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std::unique_ptr<OrderedTrackIndexSet> computeEmptyTracksForAutoRepeat(Grid&, GridTrackSizingDirection) const;
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void performGridItemsPreLayout(const GridTrackSizingAlgorithm&) const;
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void placeItemsOnGrid(GridTrackSizingAlgorithm&, std::optional<LayoutUnit> availableLogicalWidth) const;
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void populateExplicitGridAndOrderIterator(Grid&) const;
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std::unique_ptr<GridArea> createEmptyGridAreaAtSpecifiedPositionsOutsideGrid(Grid&, const RenderBox&, GridTrackSizingDirection, const GridSpan&) const;
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void placeSpecifiedMajorAxisItemsOnGrid(Grid&, const Vector<RenderBox*>&) const;
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void placeAutoMajorAxisItemsOnGrid(Grid&, const Vector<RenderBox*>&) const;
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typedef std::pair<unsigned, unsigned> AutoPlacementCursor;
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void placeAutoMajorAxisItemOnGrid(Grid&, RenderBox&, AutoPlacementCursor&) const;
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GridTrackSizingDirection autoPlacementMajorAxisDirection() const;
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GridTrackSizingDirection autoPlacementMinorAxisDirection() const;
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bool canPerformSimplifiedLayout() const final;
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void prepareChildForPositionedLayout(RenderBox&);
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bool hasStaticPositionForChild(const RenderBox&, GridTrackSizingDirection) const;
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void layoutPositionedObject(RenderBox&, bool relayoutChildren, bool fixedPositionObjectsOnly) override;
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void computeTrackSizesForDefiniteSize(GridTrackSizingDirection, LayoutUnit availableSpace);
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void computeTrackSizesForIndefiniteSize(GridTrackSizingAlgorithm&, GridTrackSizingDirection, LayoutUnit* minIntrinsicSize = nullptr, LayoutUnit* maxIntrinsicSize = nullptr) const;
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LayoutUnit computeTrackBasedLogicalHeight() const;
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void repeatTracksSizingIfNeeded(LayoutUnit availableSpaceForColumns, LayoutUnit availableSpaceForRows);
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void layoutGridItems();
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void populateGridPositionsForDirection(GridTrackSizingDirection);
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LayoutUnit resolveAutoStartGridPosition(GridTrackSizingDirection) const;
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LayoutUnit resolveAutoEndGridPosition(GridTrackSizingDirection) const;
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LayoutUnit gridAreaBreadthForOutOfFlowChild(const RenderBox&, GridTrackSizingDirection);
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LayoutUnit logicalOffsetForOutOfFlowChild(const RenderBox&, GridTrackSizingDirection, LayoutUnit) const;
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void gridAreaPositionForOutOfFlowChild(const RenderBox&, GridTrackSizingDirection, LayoutUnit& start, LayoutUnit& end) const;
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void gridAreaPositionForInFlowChild(const RenderBox&, GridTrackSizingDirection, LayoutUnit& start, LayoutUnit& end) const;
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void gridAreaPositionForChild(const RenderBox&, GridTrackSizingDirection, LayoutUnit& start, LayoutUnit& end) const;
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GridAxisPosition columnAxisPositionForChild(const RenderBox&) const;
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GridAxisPosition rowAxisPositionForChild(const RenderBox&) const;
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LayoutUnit columnAxisOffsetForChild(const RenderBox&) const;
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LayoutUnit rowAxisOffsetForChild(const RenderBox&) const;
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void computeContentPositionAndDistributionOffset(GridTrackSizingDirection, const LayoutUnit& availableFreeSpace, unsigned numberOfGridTracks);
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void setLogicalPositionForChild(RenderBox&) const;
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void setLogicalOffsetForChild(RenderBox&, GridTrackSizingDirection) const;
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LayoutUnit logicalOffsetForChild(const RenderBox&, GridTrackSizingDirection) const;
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GridArea cachedGridArea(const RenderBox&) const;
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GridSpan cachedGridSpan(const RenderBox&, GridTrackSizingDirection) const;
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LayoutUnit gridAreaBreadthForChildIncludingAlignmentOffsets(const RenderBox&, GridTrackSizingDirection) const;
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void paintChildren(PaintInfo& forSelf, const LayoutPoint& paintOffset, PaintInfo& forChild, bool usePrintRect) override;
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LayoutUnit availableAlignmentSpaceForChildBeforeStretching(LayoutUnit gridAreaBreadthForChild, const RenderBox&) const;
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StyleSelfAlignmentData justifySelfForChild(const RenderBox&, StretchingMode = StretchingMode::Any, const RenderStyle* = nullptr) const;
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StyleSelfAlignmentData alignSelfForChild(const RenderBox&, StretchingMode = StretchingMode::Any, const RenderStyle* = nullptr) const;
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void applyStretchAlignmentToChildIfNeeded(RenderBox&);
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bool hasAutoSizeInColumnAxis(const RenderBox& child) const;
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bool hasAutoSizeInRowAxis(const RenderBox& child) const;
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bool allowedToStretchChildAlongColumnAxis(const RenderBox& child) const { return alignSelfForChild(child).position() == ItemPosition::Stretch && hasAutoSizeInColumnAxis(child) && !hasAutoMarginsInColumnAxis(child); }
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bool allowedToStretchChildAlongRowAxis(const RenderBox& child) const { return justifySelfForChild(child).position() == ItemPosition::Stretch && hasAutoSizeInRowAxis(child) && !hasAutoMarginsInRowAxis(child); }
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bool hasAutoMarginsInColumnAxis(const RenderBox&) const;
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bool hasAutoMarginsInRowAxis(const RenderBox&) const;
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void resetAutoMarginsAndLogicalTopInColumnAxis(RenderBox& child);
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void updateAutoMarginsInColumnAxisIfNeeded(RenderBox&);
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void updateAutoMarginsInRowAxisIfNeeded(RenderBox&);
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LayoutUnit baselinePosition(FontBaseline, bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const final;
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std::optional<LayoutUnit> firstLineBaseline() const final;
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std::optional<LayoutUnit> inlineBlockBaseline(LineDirectionMode) const final;
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bool isInlineBaselineAlignedChild(const RenderBox&) const;
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LayoutUnit columnAxisBaselineOffsetForChild(const RenderBox&) const;
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LayoutUnit rowAxisBaselineOffsetForChild(const RenderBox&) const;
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LayoutUnit gridGap(GridTrackSizingDirection) const;
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LayoutUnit gridGap(GridTrackSizingDirection, std::optional<LayoutUnit> availableSize) const;
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unsigned nonCollapsedTracks(GridTrackSizingDirection) const;
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unsigned numTracks(GridTrackSizingDirection, const Grid&) const;
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LayoutUnit translateOutOfFlowRTLCoordinate(const RenderBox&, LayoutUnit) const;
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LayoutUnit translateRTLCoordinate(LayoutUnit) const;
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bool shouldResetLogicalHeightBeforeLayout() const override { return true; }
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bool aspectRatioPrefersInline(const RenderBox& child, bool blockFlowIsColumnAxis);
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Grid m_grid;
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GridTrackSizingAlgorithm m_trackSizingAlgorithm;
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Vector<LayoutUnit> m_columnPositions;
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Vector<LayoutUnit> m_rowPositions;
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ContentAlignmentData m_offsetBetweenColumns;
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ContentAlignmentData m_offsetBetweenRows;
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typedef HashMap<const RenderBox*, std::optional<size_t>> OutOfFlowPositionsMap;
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OutOfFlowPositionsMap m_outOfFlowItemColumn;
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OutOfFlowPositionsMap m_outOfFlowItemRow;
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bool m_hasAnyOrthogonalItem {false};
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bool m_baselineItemsCached {false};
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};
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} // namespace WebCore
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SPECIALIZE_TYPE_TRAITS_RENDER_OBJECT(RenderGrid, isRenderGrid())
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