Implement RenderGrid::computeIntrinsicLogicalWidths
[WebKit-https.git] / Source / WebCore / rendering / RenderGrid.h
1 /*
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25
26 #ifndef RenderGrid_h
27 #define RenderGrid_h
28
29 #include "RenderBlock.h"
30
31 namespace WebCore {
32
33 class GridTrack;
34
35 class RenderGrid : public RenderBlock {
36 public:
37     RenderGrid(Element*);
38     virtual ~RenderGrid();
39
40     virtual const char* renderName() const OVERRIDE;
41
42     virtual void layoutBlock(bool relayoutChildren, LayoutUnit pageLogicalHeight = 0) OVERRIDE;
43
44     virtual bool avoidsFloats() const OVERRIDE { return true; }
45     virtual bool canCollapseAnonymousBlockChild() const OVERRIDE { return false; }
46
47 private:
48     virtual bool isRenderGrid() const OVERRIDE { return true; }
49     virtual void computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const OVERRIDE;
50     virtual void computePreferredLogicalWidths() OVERRIDE;
51
52     LayoutUnit computePreferredTrackWidth(const Length&, size_t) const;
53
54     class GridIterator;
55     enum TrackSizingDirection { ForColumns, ForRows };
56     void computedUsedBreadthOfGridTracks(TrackSizingDirection, Vector<GridTrack>& columnTracks, Vector<GridTrack>& rowTracks);
57     LayoutUnit computeUsedBreadthOfMinLength(TrackSizingDirection, const Length&) const;
58     LayoutUnit computeUsedBreadthOfMaxLength(TrackSizingDirection, const Length&) const;
59     LayoutUnit computeUsedBreadthOfSpecifiedLength(TrackSizingDirection, const Length&) const;
60     void resolveContentBasedTrackSizingFunctions(TrackSizingDirection, Vector<GridTrack>& columnTracks, Vector<GridTrack>& rowTracks, LayoutUnit& availableLogicalSpace);
61     void placeItemsOnGrid();
62     void layoutGridItems();
63
64     typedef LayoutUnit (RenderGrid::* SizingFunction)(RenderBox*, TrackSizingDirection, Vector<GridTrack>&);
65     typedef LayoutUnit (GridTrack::* AccumulatorGetter)() const;
66     typedef void (GridTrack::* AccumulatorGrowFunction)(LayoutUnit);
67     void resolveContentBasedTrackSizingFunctionsForItems(TrackSizingDirection, Vector<GridTrack>& columnTracks, Vector<GridTrack>& rowTracks, size_t, SizingFunction, AccumulatorGetter, AccumulatorGrowFunction);
68     void distributeSpaceToTracks(Vector<GridTrack*>&, Vector<GridTrack*>* tracksForGrowthAboveMaxBreadth, AccumulatorGetter, AccumulatorGrowFunction, LayoutUnit& availableLogicalSpace);
69
70     const GridTrackSize& gridTrackSize(TrackSizingDirection, size_t);
71     size_t maximumIndexInDirection(TrackSizingDirection) const;
72
73     LayoutUnit logicalContentHeightForChild(RenderBox*, Vector<GridTrack>&);
74     LayoutUnit minContentForChild(RenderBox*, TrackSizingDirection, Vector<GridTrack>& columnTracks);
75     LayoutUnit maxContentForChild(RenderBox*, TrackSizingDirection, Vector<GridTrack>& columnTracks);
76     LayoutPoint findChildLogicalPosition(RenderBox*, const Vector<GridTrack>& columnTracks, const Vector<GridTrack>& rowTracks);
77     size_t resolveGridPosition(TrackSizingDirection, const RenderObject*) const;
78     size_t resolveGridPosition(const GridPosition&) const;
79
80 #ifndef NDEBUG
81     bool tracksAreWiderThanMinTrackBreadth(TrackSizingDirection, const Vector<GridTrack>&);
82 #endif
83
84     size_t gridColumnCount() const { return m_grid.isEmpty() ? 0 : m_grid[0].size(); }
85     size_t gridRowCount() const { return m_grid.size(); }
86
87     Vector<Vector<Vector<RenderBox*, 1> > > m_grid;
88 };
89
90 } // namespace WebCore
91
92 #endif // RenderGrid_h