// main.cpp
#include <QtGui>
 
class AnimatedTextEdit : public QTextEdit
{
    Q_OBJECT
 
public:
    AnimatedTextEdit(QWidget* parent = 0)
        : QTextEdit(parent) { }
 
    void addAnimation(const QUrl& url, const QString& fileName)
    {
        QMovie* movie = new QMovie(this);
        movie->setFileName(fileName);
        urls.insert(movie, url);
        connect(movie, SIGNAL(frameChanged(int)), this, SLOT(animate()));
        movie->start();
    }
 
private slots:
    void animate()
    {
        if (QMovie* movie = qobject_cast<QMovie*>(sender()))
        {
            document()->addResource(QTextDocument::ImageResource,
                urls.value(movie), movie->currentPixmap());
            setLineWrapColumnOrWidth(lineWrapColumnOrWidth()); // causes reload
        }
    }
 
private:
    QHash<QMovie*, QUrl> urls;
};
 
int main(int argc, char* argv[])
{
    QApplication app(argc, argv);
    AnimatedTextEdit textEdit;
    textEdit.setHtml("<img src='bart-url'/><img src='homer-url'/>");
    textEdit.addAnimation(QUrl("bart-url"), "bart.gif");
    textEdit.addAnimation(QUrl("homer-url"), "homer.gif");
    textEdit.show();
    return app.exec();
}