/* * Copyright 2006, Haiku Inc. * Distributed under the terms of the MIT License. */ #ifndef _GRID_LAYOUT_H #define _GRID_LAYOUT_H #include class BGridLayout : public BTwoDimensionalLayout { public: BGridLayout(float horizontal = 0.0f, float vertical = 0.0f); virtual ~BGridLayout(); int32 CountColumns() const; int32 CountRows() const; float HorizontalSpacing() const; float VerticalSpacing() const; void SetHorizontalSpacing(float spacing); void SetVerticalSpacing(float spacing); void SetSpacing(float horizontal, float vertical); float ColumnWeight(int32 column) const; void SetColumnWeight(int32 column, float weight); float MinColumnWidth(int32 column) const; void SetMinColumnWidth(int32 column, float width); float MaxColumnWidth(int32 column) const; void SetMaxColumnWidth(int32 column, float width); float RowWeight(int32 row) const; void SetRowWeight(int32 row, float weight); float MinRowHeight(int row) const; void SetMinRowHeight(int32 row, float height); float MaxRowHeight(int32 row) const; void SetMaxRowHeight(int32 row, float height); virtual BLayoutItem* AddView(BView* child); virtual BLayoutItem* AddView(int32 index, BView* child); virtual BLayoutItem* AddView(BView* child, int32 column, int32 row, int32 columnCount = 1, int32 rowCount = 1); virtual bool AddItem(BLayoutItem* item); virtual bool AddItem(int32 index, BLayoutItem* item); virtual bool AddItem(BLayoutItem* item, int32 column, int32 row, int32 columnCount = 1, int32 rowCount = 1); protected: virtual void ItemAdded(BLayoutItem* item); virtual void ItemRemoved(BLayoutItem* item); virtual bool HasMultiColumnItems(); virtual bool HasMultiRowItems(); virtual int32 InternalCountColumns(); virtual int32 InternalCountRows(); virtual void GetColumnRowConstraints( enum orientation orientation, int32 index, ColumnRowConstraints* constraints); virtual void GetItemDimensions(BLayoutItem* item, Dimensions* dimensions); private: class DummyLayoutItem; class RowInfoArray; struct ItemLayoutData; bool _IsGridCellEmpty(int32 column, int32 row); bool _AreGridCellsEmpty(int32 column, int32 row, int32 columnCount, int32 rowCount); bool _ResizeGrid(int32 columnCount, int32 rowCount); ItemLayoutData* _LayoutDataForItem(BLayoutItem* item) const; private: BLayoutItem*** fGrid; int32 fColumnCount; int32 fRowCount; RowInfoArray* fRowInfos; RowInfoArray* fColumnInfos; int32 fMultiColumnItems; int32 fMultiRowItems; }; #endif // _GRID_LAYOUT_H