分析一下github中项目的软件启动画面的实现

#ifndef LOADSPLASH_H

#define LOADSPLASH_H

#include <QObject>

#include <QSplashScreen>

#include <QTimerEvent>

//! The LoadSplash class.

/*!

Animated splash screen.

*/

class LoadSplash : public QObject

{

Q_OBJECT

public:

//! Constructor LoadSplash class.

/*!

Load images

\param screen Used splash screen

\param interval Time interval of pictures

\param parent Parent widget

    */

explicit LoadSplash(QSplashScreen * screen, int interval, QObject *parent = 0);

//! Start animation.

void start();

private:

//! Timer Event.

/*!

Show images

\param event Timer event

    */

void timerEvent(QTimerEvent *event);

private:

QSplashScreen * _screen;   //!< Used splash screen

QList<QPixmap>  _pixmaps;  //!< List of Pictures

int             _interval; //!< Time interval of pictures

};

#endif // LOADSPLASH_H

#include "loadsplash.h"

LoadSplash::LoadSplash(QSplashScreen * screen, int interval, QObject *parent) :

QObject(parent)

{

_screen   = screen;

_interval = interval;

_pixmaps.append(QPixmap (":/logos/logoShow1.png"));

_pixmaps.append(QPixmap (":/logos/logoShow2.png"));

_pixmaps.append(QPixmap (":/logos/logoShow3.png"));

_pixmaps.append(QPixmap (":/logos/logoShow4.png"));

_pixmaps.append(QPixmap (":/logos/logoShow5.png"));

_pixmaps.append(QPixmap (":/logos/logoShow6.png"));

_pixmaps.append(QPixmap (":/logos/logoShow7.png"));

}

void LoadSplash::start()

{

startTimer(_interval);

}

void LoadSplash::timerEvent(QTimerEvent *event)

{

if(!_pixmaps.isEmpty())

{

_screen->setPixmap(_pixmaps.takeFirst());

}

else

{

killTimer(event->timerId());

}

}