分析一下github中项目的软件启动画面的实现

引用这个老外的一些资源了呀。。。。。。。。。。。。。。。。。

看到了，很简单，就是一帧帧的png图片。下面是他的代码，就是开启一个定时器，每隔一段时间刷新出一帧新的图片，

当所有图片显示完成后，启动界面结束。感觉还不如整个gif图片呢。其实这倒无所谓，反正动画（电影）也就是一帧帧的图像组成的。

#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());

    }

}

by zhangshaoyan at June 17,2015.