[CSS Grid Layout] Adding or removing grid items doesn't properly recompute the track...
[WebKit-https.git] / Source / WebCore / rendering / RenderGrid.h
1 /*
2  * Copyright (C) 2011 Apple Inc. All rights reserved.
3  *
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7  * 1. Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  *    notice, this list of conditions and the following disclaimer in the
11  *    documentation and/or other materials provided with the distribution.
12  *
13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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24  */
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 computePreferredLogicalWidths() OVERRIDE;
50
51     LayoutUnit computePreferredTrackWidth(const Length&, size_t) const;
52
53     enum TrackSizingDirection { ForColumns, ForRows };
54     void computedUsedBreadthOfGridTracks(TrackSizingDirection, Vector<GridTrack>& columnTracks, Vector<GridTrack>& rowTracks);
55     LayoutUnit computeUsedBreadthOfMinLength(TrackSizingDirection, const Length&) const;
56     LayoutUnit computeUsedBreadthOfMaxLength(TrackSizingDirection, const Length&) const;
57     LayoutUnit computeUsedBreadthOfSpecifiedLength(TrackSizingDirection, const Length&) const;
58     void resolveContentBasedTrackSizingFunctions(TrackSizingDirection, Vector<GridTrack>& columnTracks, Vector<GridTrack>& rowTracks, LayoutUnit& availableLogicalSpace);
59     void layoutGridItems();
60
61     typedef LayoutUnit (RenderGrid::* SizingFunction)(RenderBox*, TrackSizingDirection, Vector<GridTrack>&);
62     typedef LayoutUnit (GridTrack::* AccumulatorGetter)() const;
63     typedef void (GridTrack::* AccumulatorGrowFunction)(LayoutUnit);
64     void resolveContentBasedTrackSizingFunctionsForItems(TrackSizingDirection, Vector<GridTrack>& columnTracks, Vector<GridTrack>& rowTracks, size_t, SizingFunction, AccumulatorGetter, AccumulatorGrowFunction);
65     void distributeSpaceToTracks(Vector<GridTrack*>&, Vector<GridTrack*>* tracksForGrowthAboveMaxBreadth, AccumulatorGetter, AccumulatorGrowFunction, LayoutUnit& availableLogicalSpace);
66
67     const GridTrackSize& gridTrackSize(TrackSizingDirection, size_t);
68     size_t maximumIndexInDirection(TrackSizingDirection) const;
69
70     LayoutUnit logicalContentHeightForChild(RenderBox*, Vector<GridTrack>&);
71     LayoutUnit minContentForChild(RenderBox*, TrackSizingDirection, Vector<GridTrack>& columnTracks);
72     LayoutUnit maxContentForChild(RenderBox*, TrackSizingDirection, Vector<GridTrack>& columnTracks);
73     LayoutPoint findChildLogicalPosition(RenderBox*, const Vector<GridTrack>& columnTracks, const Vector<GridTrack>& rowTracks);
74     size_t resolveGridPosition(TrackSizingDirection, const RenderObject*) const;
75     size_t resolveGridPosition(const GridPosition&) const;
76
77 #ifndef NDEBUG
78     bool tracksAreWiderThanMinTrackBreadth(TrackSizingDirection, const Vector<GridTrack>&);
79 #endif
80 };
81
82 } // namespace WebCore
83
84 #endif // RenderGrid_h