butterfly.h

Linux窗口程序设计__Qt4精彩实例分析上面的源代码第二部分.以循序渐进的方式进行源代码,包括Qt4下面的图形与图画对话框QMainWindow的源代码.

#ifndef BUTTERFLY_H
#define BUTTERFLY_H

#include <QGraphicsItem>
#include <QObject>


class Butterfly : public QObject, public QGraphicsItem
{
    Q_OBJECT
public:
    Butterfly();
    void timerEvent(QTimerEvent *);
    QRectF boundingRect() const;
   
protected:
    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);

    
private:
    bool up;
    QPixmap pix_up;
    QPixmap pix_down; 
    
    qreal angle;

};

#endif 	// BUTTERFLY_H