| /* |
| * Copyright (C) 2011 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef RenderGrid_h |
| #define RenderGrid_h |
| |
| #include "core/rendering/OrderIterator.h" |
| #include "core/rendering/RenderBlock.h" |
| |
| namespace WebCore { |
| |
| struct GridCoordinate; |
| struct GridSpan; |
| class GridTrack; |
| |
| enum GridTrackSizingDirection { |
| ForColumns, |
| ForRows |
| }; |
| |
| class RenderGrid FINAL : public RenderBlock { |
| public: |
| RenderGrid(Element*); |
| virtual ~RenderGrid(); |
| |
| virtual const char* renderName() const OVERRIDE; |
| |
| virtual void layoutBlock(bool relayoutChildren, LayoutUnit pageLogicalHeight = 0) OVERRIDE; |
| |
| virtual bool avoidsFloats() const OVERRIDE { return true; } |
| virtual bool canCollapseAnonymousBlockChild() const OVERRIDE { return false; } |
| |
| void dirtyGrid(); |
| |
| const Vector<LayoutUnit>& columnPositions() const { return m_columnPositions; } |
| const Vector<LayoutUnit>& rowPositions() const { return m_rowPositions; } |
| |
| private: |
| virtual bool isRenderGrid() const OVERRIDE { return true; } |
| virtual void computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const OVERRIDE; |
| virtual void computePreferredLogicalWidths() OVERRIDE; |
| |
| virtual void addChild(RenderObject* newChild, RenderObject* beforeChild = 0) OVERRIDE; |
| virtual void removeChild(RenderObject*) OVERRIDE; |
| |
| virtual void styleDidChange(StyleDifference, const RenderStyle*) OVERRIDE; |
| |
| bool explicitGridDidResize(const RenderStyle*) const; |
| bool namedGridLinesDefinitionDidChange(const RenderStyle*) const; |
| |
| class GridIterator; |
| struct GridSizingData; |
| void computedUsedBreadthOfGridTracks(GridTrackSizingDirection, GridSizingData&); |
| void computedUsedBreadthOfGridTracks(GridTrackSizingDirection, GridSizingData&, LayoutUnit& availableLogicalSpace); |
| LayoutUnit computeUsedBreadthOfMinLength(GridTrackSizingDirection, const GridLength&) const; |
| LayoutUnit computeUsedBreadthOfMaxLength(GridTrackSizingDirection, const GridLength&, LayoutUnit usedBreadth) const; |
| LayoutUnit computeUsedBreadthOfSpecifiedLength(GridTrackSizingDirection, const Length&) const; |
| void resolveContentBasedTrackSizingFunctions(GridTrackSizingDirection, GridSizingData&, LayoutUnit& availableLogicalSpace); |
| |
| void growGrid(GridTrackSizingDirection); |
| void insertItemIntoGrid(RenderBox*, size_t rowTrack, size_t columnTrack); |
| void insertItemIntoGrid(RenderBox*, const GridCoordinate&); |
| void placeItemsOnGrid(); |
| void populateExplicitGridAndOrderIterator(); |
| void placeSpecifiedMajorAxisItemsOnGrid(const Vector<RenderBox*>&); |
| void placeAutoMajorAxisItemsOnGrid(const Vector<RenderBox*>&); |
| void placeAutoMajorAxisItemOnGrid(RenderBox*); |
| GridTrackSizingDirection autoPlacementMajorAxisDirection() const; |
| GridTrackSizingDirection autoPlacementMinorAxisDirection() const; |
| |
| void checkGridCoherency() const; |
| |
| void layoutGridItems(); |
| void populateGridPositions(const GridSizingData&); |
| |
| virtual bool supportsPartialLayout() const OVERRIDE { return false; } |
| |
| typedef LayoutUnit (RenderGrid::* SizingFunction)(RenderBox*, GridTrackSizingDirection, Vector<GridTrack>&); |
| typedef LayoutUnit (GridTrack::* AccumulatorGetter)() const; |
| typedef void (GridTrack::* AccumulatorGrowFunction)(LayoutUnit); |
| typedef bool (GridTrackSize::* FilterFunction)() const; |
| void resolveContentBasedTrackSizingFunctionsForItems(GridTrackSizingDirection, GridSizingData&, RenderBox*, FilterFunction, SizingFunction, AccumulatorGetter, AccumulatorGrowFunction); |
| void distributeSpaceToTracks(Vector<GridTrack*>&, Vector<GridTrack*>* tracksForGrowthAboveMaxBreadth, AccumulatorGetter, AccumulatorGrowFunction, GridSizingData&, LayoutUnit& availableLogicalSpace); |
| |
| double computeNormalizedFractionBreadth(Vector<GridTrack>&, GridTrackSizingDirection, LayoutUnit availableLogicalSpace) const; |
| |
| const GridTrackSize& gridTrackSize(GridTrackSizingDirection, size_t) const; |
| size_t explicitGridColumnCount() const; |
| size_t explicitGridRowCount() const; |
| size_t explicitGridSizeForSide(GridPositionSide) const; |
| |
| LayoutUnit logicalContentHeightForChild(RenderBox*, Vector<GridTrack>&); |
| LayoutUnit minContentForChild(RenderBox*, GridTrackSizingDirection, Vector<GridTrack>& columnTracks); |
| LayoutUnit maxContentForChild(RenderBox*, GridTrackSizingDirection, Vector<GridTrack>& columnTracks); |
| LayoutPoint findChildLogicalPosition(RenderBox*, const GridSizingData&); |
| GridCoordinate cachedGridCoordinate(const RenderBox*) const; |
| |
| GridSpan resolveGridPositionsFromAutoPlacementPosition(const RenderBox*, GridTrackSizingDirection, size_t) const; |
| PassOwnPtr<GridSpan> resolveGridPositionsFromStyle(const RenderBox*, GridTrackSizingDirection) const; |
| size_t resolveNamedGridLinePositionFromStyle(const GridPosition&, GridPositionSide) const; |
| size_t resolveGridPositionFromStyle(const GridPosition&, GridPositionSide) const; |
| PassOwnPtr<GridSpan> resolveGridPositionAgainstOppositePosition(size_t resolvedOppositePosition, const GridPosition&, GridPositionSide) const; |
| PassOwnPtr<GridSpan> resolveNamedGridLinePositionAgainstOppositePosition(size_t resolvedOppositePosition, const GridPosition&, GridPositionSide) const; |
| PassOwnPtr<GridSpan> resolveBeforeStartNamedGridLinePositionAgainstOppositePosition(size_t resolvedOppositePosition, const GridPosition&, const Vector<size_t>&) const; |
| PassOwnPtr<GridSpan> resolveAfterEndNamedGridLinePositionAgainstOppositePosition(size_t resolvedOppositePosition, const GridPosition&, const Vector<size_t>&) const; |
| |
| LayoutUnit gridAreaBreadthForChild(const RenderBox* child, GridTrackSizingDirection, const Vector<GridTrack>&) const; |
| |
| virtual void paintChildren(PaintInfo&, const LayoutPoint&) OVERRIDE FINAL; |
| void paintChildrenSlowCase(PaintInfo&, const LayoutPoint&); |
| |
| bool gridIsDirty() const { return m_gridIsDirty; } |
| |
| #ifndef NDEBUG |
| bool tracksAreWiderThanMinTrackBreadth(GridTrackSizingDirection, const Vector<GridTrack>&); |
| #endif |
| |
| size_t gridColumnCount() const |
| { |
| ASSERT(!gridIsDirty()); |
| return m_grid[0].size(); |
| } |
| size_t gridRowCount() const |
| { |
| ASSERT(!gridIsDirty()); |
| return m_grid.size(); |
| } |
| |
| typedef Vector<RenderBox*, 1> GridCell; |
| typedef Vector<Vector<GridCell> > GridRepresentation; |
| GridRepresentation m_grid; |
| bool m_gridIsDirty; |
| Vector<LayoutUnit> m_rowPositions; |
| Vector<LayoutUnit> m_columnPositions; |
| HashMap<const RenderBox*, GridCoordinate> m_gridItemCoordinate; |
| OrderIterator m_orderIterator; |
| bool m_gridItemOverflowGridArea; |
| }; |
| |
| DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderGrid, isRenderGrid()); |
| |
| } // namespace WebCore |
| |
| #endif // RenderGrid_h |