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pixmap->fill(QColor("transparent"));
painter->drawPixmap(0, 0, 1024, 640, *spriteImage, x,y,1024,640);  

paint(QPainter* painter, const QStyleOptionGraphicsItem*, QWidget*)

#include "animatedsprite.h"

AnimatedSprite::AnimatedSprite(QWidget *parent) :
    QWidget(parent), x(0), y(0)
{
    pixmap = new QPixmap(128,128);
    pixmap->fill(QColor("transparent"));
    spriteImage = new QPixmap(":/img/images/sprite2.png");
    painter = new QPainter(pixmap);
    label = new QLabel(this);
    label->setGeometry(0,0,128,128);
    label->show();

    timer = new QTimer(this);
    connect(timer, SIGNAL(timeout()), this, SLOT(nextSlide()));
    timer->start(30);
}

void AnimatedSprite::paintEvent(QPaintEvent *)
{
    pixmap->fill(QColor("transparent"));
    painter->drawPixmap(0, 0, 1024, 640, *spriteImage, x,y,1024,640);

    label->setPixmap(*pixmap);
}

void AnimatedSprite::nextSlide()
{
    if(x > 895)
    {
        x = 0;
        if(y > 512)
        {
            y = 0;
        }
        else y += 128;
    }
    else
    {
        if(x >= 512 && y >= 512)
        {
            x = 0;
            y = 0;
            //timer->stop();
        }
        x += 128;
    }
    this->update();
}

protected:void advance(int phase);

    timer = new QTimer();
    connect(timer, SIGNAL(timeout()), &scene, SLOT(advance()));
    timer->start(30);

    PixmapItem* obj =  new PixmapItem();
    obj->setX(128);
    obj->setY(128);
    scene.addItem(obj);