class Image : public QGraphicsItem
{
public:
    Image(const QString &fileName);
    void paint(QPainter *painter,
               const QStyleOptionGraphicsItem *option, QWidget *widget);

protected:
    void mousePressEvent(QGraphicsSceneMouseEvent *event);

private:
    QImage image;
};

Image::Image(const QString &fileName)
{
    image = QImage(fileName);
}

void Image::paint(QPainter *painter,
             const QStyleOptionGraphicsItem */*option*/, QWidget */*widget*/)
{
    painter->drawImage(0, 0, image);
    painter->setRenderHint(QPainter::Antialiasing, true);
}

void Image::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
    //do something
    QGraphicsItem::mousePressEvent(event);
}

class Image : public QGraphicsItem
{
public:
    Image(const QString &fileName);
    void paint(QPainter *painter,
               const QStyleOptionGraphicsItem *option, QWidget *widget);
    const QMovie *getMovie();

protected:
    void mousePressEvent(QGraphicsSceneMouseEvent *event);

private:
    QMovie *movie;
};

Image::Image(const QString &fileName)
{
    movie = new QMovie(fileName);
    movie->start();
}

void Image::paint(QPainter *painter,
             const QStyleOptionGraphicsItem */*option*/, QWidget */*widget*/)
{
    painter->drawPixmap(0, 0, movie->currentPixmap());
    painter->setRenderHint(QPainter::Antialiasing, true);
}

void Image::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
    //do something
    QGraphicsItem::mousePressEvent(event);
}

Image *img = new Image(fileName);
connect(img->getMovie(), SIGNAL(frameChanged(int)), scene, SLOT(update()));

class MainWindow : public QMainWindow
{
    Q_OBJECT
public:
    MainWindow(QWidget *parent = 0);
    ...
private:
    QSignalMapper *signalMapper;
    QList<Image *> imageList;
    ...
private slots:
    void addImage(const QString &fileName);
    void updateItem(int i);
    ...
}

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
{
    ...
    signalMapper = new QSignalMapper(this);
    ...
}

void MainWindow::addImage(const QString &fileName)
{
    Image *img = new Image(fileName);
    imageList.append(img);
    connect(img->getMovie(), SIGNAL(frameChanged(int)), signalMapper, SLOT(map()));
    signalMapper->setMapping(img->getMovie(), imageList.indexOf(img));
    connect(signalMapper, SIGNAL(mapped(int)), this, SLOT(updateItem(int)));
}

void MainWindow::updateImage(int i)
{
    imageList.at(i)->update();
}

    worker->setPixmap(pixmap);
    worker->update();