QGraphicsGrid.h

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#pragma once
 
#include <QGraphicsItem>
#include <QPen>
 
class QGraphicsGrid : public QGraphicsItem
{
public:
    QGraphicsGrid(QRectF rect,
                  int xCells,
                  int yCells,
                  QGraphicsItem* parent = nullptr);
    QGraphicsGrid(int x,
                  int y,
                  int width,
                  int height,
                  int xCells,
                  int yCells,
                  QGraphicsItem* parent = nullptr);
    QGraphicsGrid(QRectF rect,
                  int xCells,
                  int yCells,
                  bool ticks,
                  QPen pen,
                  QGraphicsItem* parent = nullptr);
    QGraphicsGrid(int x,
                  int y,
                  int width,
                  int height,
                  int xCells,
                  int yCells,
                  bool ticks,
                  QPen pen,
                  QGraphicsItem* parent = nullptr);
    ~QGraphicsGrid() override;
 
    QRectF boundingRect() const override;
    void paint(QPainter* painter,
               const QStyleOptionGraphicsItem* option,
               QWidget* widget) override;
    void setNumberOfXCells(int xCells);
    void setNumberOfYCells(int yCells);
    void setRect(QRectF rect);
    void setRect(int x, int y, int width, int height);
 
private:
    void initDefaultPens();
 
    QPen _inside;
    QPen _outside;
    QRectF _bounds;
    int _numberOfXCells;
    int _numberOfYCells;
    bool _showTicks;
};