GridPanel.h

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#pragma once
 
#include "PanelBase.h"
#include "Scrollbar.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, public ScrollbarListener
{
    Scrollbar _scrollBar;
 
    vector<GridPanelColumn> _columns; 
    vector<GridPanelRow> _rows;       
 
    long _fillRowsMinHeight;          
 
    long _margin;                     
    long _vGap;                     
    long _allRowsHeight;                
    long _rowHeight;                    
    long _totalRowCount;
 
    long _maxVisibleRows;             
    long _firstVisibleRow;            
 
    long _borderWidthLeft, _borderWidthTop, _borderWidthRight, _borderWidthBottom;

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

    void windowCreated();

    virtual void constructPanel() {};
 
public:
    GridPanel();
    virtual ~GridPanel();

    void clear();

    void setMargin(int margin);
 
    void setBorder(long borderWidthLeft, long borderWidthTop, long borderWidthRight, long borderWidthBottom);

    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);
 
    void onMousePressed(WinHandle hWnd, int x, int y, int clickCount, BOOL shiftPressed, BOOL ctrlPressed);
    void onMouseReleased(WinHandle hWnd, int x, int y, BOOL shiftPressed, BOOL ctrlPressed);
    void onMouseMoved(WinHandle hWnd, int x, int y, BOOL shiftPressed, BOOL ctrlPressed);
    BOOL onMouseWheel(WinHandle hWnd, int x, int y, int delta);
 
public:
 
    void scrollBarActivity(__int64 firstVisibleItem);
    void scrollBarRepaint();
};