3 

     3 

     4 #include <QGraphicsScene>

     4 #include <QGraphicsScene>

     5 

     5 

     6 class QGraphicsPathItem;

     6 class QGraphicsPathItem;

     7 

     7 

     8 class DrawMapScene : public QGraphicsScene

    10 class DrawMapScene : public QGraphicsScene

     9 {

    11 {

    10 Q_OBJECT

    12 Q_OBJECT

    11 public:

    13 public:

    12     explicit DrawMapScene(QObject *parent = 0);

    14     explicit DrawMapScene(QObject *parent = 0);

    13 

    15 

    14 signals:

    18 signals:

    15 

    20 

    16 public slots:

    21 public slots:

    17     void undo();

    22     void undo();

    18 

    23 

    19 private:

    24 private:

    20     QPen m_pen;

    25     QPen m_pen;

    21     QBrush m_brush;

    26     QBrush m_brush;

    22     QGraphicsPathItem  * m_currPath;

    27     QGraphicsPathItem  * m_currPath;

    23 

    29 

    24     virtual void mouseMoveEvent(QGraphicsSceneMouseEvent * mouseEvent);

    30     virtual void mouseMoveEvent(QGraphicsSceneMouseEvent * mouseEvent);

    25     virtual void mousePressEvent(QGraphicsSceneMouseEvent * mouseEvent);

    31     virtual void mousePressEvent(QGraphicsSceneMouseEvent * mouseEvent);

    26     virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent * mouseEvent);

    32     virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent * mouseEvent);

    27 };

    33 };