* Copyright 2006-2011, Haiku, Inc. All rights reserved.
* Distributed under the terms of the MIT License.
*/
#ifndef _GRID_LAYOUT_H
#define _GRID_LAYOUT_H
#include <TwoDimensionalLayout.h>
class BGridLayout : public BTwoDimensionalLayout {
public:
BGridLayout(float horizontal
= B_USE_DEFAULT_SPACING,
float vertical = B_USE_DEFAULT_SPACING);
BGridLayout(BMessage* from);
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);
BLayoutItem* ItemAt(int32 column, int32 row) const;
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);
virtual status_t Archive(BMessage* into, bool deep = true) const;
static BArchivable* Instantiate(BMessage* from);
virtual status_t Perform(perform_code d, void* arg);
protected:
virtual status_t AllArchived(BMessage* into) const;
virtual status_t AllUnarchived(const BMessage* from);
virtual status_t ItemArchived(BMessage* into,
BLayoutItem* item, int32 index) const;
virtual status_t ItemUnarchived(const BMessage* from,
BLayoutItem* item, int32 index);
virtual bool ItemAdded(BLayoutItem* item, int32 atIndex);
virtual void ItemRemoved(BLayoutItem* item, int32 fromIndex);
virtual bool HasMultiColumnItems();
virtual bool HasMultiRowItems();
virtual int32 InternalCountColumns();
virtual int32 InternalCountRows();
virtual void GetColumnRowConstraints(
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 _InsertItemIntoGrid(BLayoutItem* item);
bool _ResizeGrid(int32 columnCount, int32 rowCount);
ItemLayoutData* _LayoutDataForItem(BLayoutItem* item) const;
private:
virtual void _ReservedGridLayout1();
virtual void _ReservedGridLayout2();
virtual void _ReservedGridLayout3();
virtual void _ReservedGridLayout4();
virtual void _ReservedGridLayout5();
virtual void _ReservedGridLayout6();
virtual void _ReservedGridLayout7();
virtual void _ReservedGridLayout8();
virtual void _ReservedGridLayout9();
virtual void _ReservedGridLayout10();
BGridLayout(const BGridLayout&);
void operator =(const BGridLayout&);
BLayoutItem*** fGrid;
int32 fColumnCount;
int32 fRowCount;
RowInfoArray* fRowInfos;
RowInfoArray* fColumnInfos;
int32 fMultiColumnItems;
int32 fMultiRowItems;
uint32 _reserved[5];
};
#endif
