#ifndef RenderGrid_h
#define RenderGrid_h
#if ENABLE(CSS_GRID_LAYOUT)
#include "GridResolvedPosition.h"
#include "OrderIterator.h"
#include "RenderBlock.h"
namespace WebCore {
class GridCoordinate;
class GridSpan;
class GridTrack;
class RenderGrid final : public RenderBlock {
public:
RenderGrid(Element&, PassRef<RenderStyle>);
virtual ~RenderGrid();
Element& element() const { return toElement(nodeForNonAnonymous()); }
virtual void layoutBlock(bool relayoutChildren, LayoutUnit pageLogicalHeight = 0) override;
virtual bool avoidsFloats() const override { return true; }
virtual bool canCollapseAnonymousBlockChild() const override { return false; }
const Vector<LayoutUnit>& columnPositions() const { return m_columnPositions; }
const Vector<LayoutUnit>& rowPositions() const { return m_rowPositions; }
private:
virtual const char* renderName() const override;
virtual bool isRenderGrid() const override { return true; }
virtual void computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const override;
virtual void computePreferredLogicalWidths() override;
class GridIterator;
class GridSizingData;
void computeUsedBreadthOfGridTracks(GridTrackSizingDirection, GridSizingData&);
void computeUsedBreadthOfGridTracks(GridTrackSizingDirection, GridSizingData&, LayoutUnit& availableLogicalSpace);
bool gridElementIsShrinkToFit();
LayoutUnit computeUsedBreadthOfMinLength(GridTrackSizingDirection, const GridLength&) const;
LayoutUnit computeUsedBreadthOfMaxLength(GridTrackSizingDirection, const GridLength&, LayoutUnit usedBreadth) const;
LayoutUnit computeUsedBreadthOfSpecifiedLength(GridTrackSizingDirection, const Length&) const;
void resolveContentBasedTrackSizingFunctions(GridTrackSizingDirection, GridSizingData&);
void ensureGridSize(size_t maximumRowIndex, size_t maximumColumnIndex);
void insertItemIntoGrid(RenderBox*, const GridCoordinate&);
void placeItemsOnGrid();
void populateExplicitGridAndOrderIterator();
std::unique_ptr<GridCoordinate> createEmptyGridAreaAtSpecifiedPositionsOutsideGrid(const RenderBox*, GridTrackSizingDirection, const GridSpan&) const;
void placeSpecifiedMajorAxisItemsOnGrid(const Vector<RenderBox*>&);
void placeAutoMajorAxisItemsOnGrid(const Vector<RenderBox*>&);
typedef std::pair<size_t, size_t> AutoPlacementCursor;
void placeAutoMajorAxisItemOnGrid(RenderBox*, AutoPlacementCursor&);
GridTrackSizingDirection autoPlacementMajorAxisDirection() const;
GridTrackSizingDirection autoPlacementMinorAxisDirection() const;
void layoutGridItems();
void populateGridPositions(const GridSizingData&);
void clearGrid();
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>&, const GridSpan& tracksSpan, GridTrackSizingDirection, LayoutUnit availableLogicalSpace) const;
const GridTrackSize& gridTrackSize(GridTrackSizingDirection, size_t) 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;
LayoutUnit gridAreaBreadthForChild(const RenderBox* child, GridTrackSizingDirection, const Vector<GridTrack>&) const;
virtual void paintChildren(PaintInfo& forSelf, const LayoutPoint& paintOffset, PaintInfo& forChild, bool usePrintRect) override final;
#ifndef NDEBUG
bool tracksAreWiderThanMinTrackBreadth(GridTrackSizingDirection, const Vector<GridTrack>&);
#endif
bool gridWasPopulated() const { return !m_grid.isEmpty() && !m_grid[0].isEmpty(); }
size_t gridColumnCount() const
{
ASSERT(gridWasPopulated());
return m_grid[0].size();
}
size_t gridRowCount() const
{
ASSERT(gridWasPopulated());
return m_grid.size();
}
Vector<Vector<Vector<RenderBox*, 1>>> m_grid;
Vector<LayoutUnit> m_columnPositions;
Vector<LayoutUnit> m_rowPositions;
HashMap<const RenderBox*, GridCoordinate> m_gridItemCoordinate;
OrderIterator m_orderIterator;
};
RENDER_OBJECT_TYPE_CASTS(RenderGrid, isRenderGrid())
}
#endif
#endif // RenderGrid_h