scene.h

#ifndef SCENE_H
#define SCENE_H

#include <QGraphicsScene>
#include <QGraphicsSceneMouseEvent>
#include <QMouseEvent>

class QGraphicsTextItem;
class QGraphicsLineItem;
class CrossX;
class CrossY;
class MainWindow;
class View;

class MyGraphicsScene : public QGraphicsScene
{
    Q_OBJECT

public:
    MyGraphicsScene(QObject* parent = 0);

    void clearXAxis();
    void clearYAxis();
    void clearCross(qreal x, qreal y);

    MainWindow* window;
    View* view;
    QPointF pX0;
    QPointF pX1;
    QPointF pY0;
    QPointF pY1;
    QGraphicsLineItem* lineX;
    QGraphicsLineItem* lineY;
    QGraphicsTextItem* textX0;
    QGraphicsTextItem* textX1;
    QGraphicsTextItem* textY0;
    QGraphicsTextItem* textY1;
    CrossX* crossX0;
    CrossX* crossX1;
    CrossY* crossY0;
    CrossY* crossY1;

    bool defXaxis;
    bool defYaxis;
    bool defCross;
    bool defX0;
    bool defX1;
    bool defY0;
    bool defY1;

public slots:

protected:
    void mousePressEvent(QGraphicsSceneMouseEvent* mouseEvent);
    void mouseMoveEvent(QGraphicsSceneMouseEvent* mouseEvent);

private:
    QPointF p;
};

#endif