GridPanel.h

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#pragma once
 
#include "PanelBase.h"
 
class GridPanelColumn
{
public:
    GridPanelColumn(int width)
    {
        _width = width;
        _calculatedWidth = width;
    }
 
    int _width;            
    int _calculatedWidth;  
};
 
class GridPanelRow
{
public:
    GridPanelRow(int height)
    {
        _height = height;
        _calculatedHeight = height;
    }
 
    int _height;            
    int _calculatedHeight;  
};

class GridPanel : public PanelBase
{
    vector<GridPanelColumn> _columns; 
    vector<GridPanelRow> _rows;       
 
    long _fillRowsMinHeight;          
 
    long _margin;                     
    long _vGap;                     
    long _allRowsHeight;                
    long _rowHeight;                    
    long _viewHeight;                 
 
    long _maxVisibleRows;             
    long _firstVisibleRow;            
 
    BOOL _hasBorderLeft, _hasBorderTop, _hasBorderRight, _hasBorderBottom;

    void Layout();
 
protected:
    wstring getClassName();

    void windowCreated();
 
public:
    GridPanel();
    virtual ~GridPanel();

    void clear();

    void setMargin(int margin);
 
    void setHasBorder(BOOL hasBorderLeft, BOOL hasBorderTop, BOOL hasBorderRight, BOOL hasBorderBottom);

    void setLayout(const vector<int>& columns, const vector<int>& rows);

    void setFillRowsMinHeight(int minHeight);

    void addComponent(Component* component, int column, int row, int columnCount = 1, int rowCount = 1);

    void onWindowResized();

    void onPaint(Graphics *g);

    BOOL onMouseWheel(WinHandle hWnd, int x, int y, int delta);

    BOOL getScrollingInfo(__int64& scrollMin, __int64& scrollMax, __int64& pageSize);

    void setScrollbarTopOffset(__int64 firstVisibleRow);
};