QGraphicsScene - drawBackground, only one picture

[Gruwe]

Hi,

I'm coding a programm with a QGraphicsScene and a QGraphicsView of course.
In the GraphicsView I want to use a picture as the backgroundBrush of this View.

I have coded a widget to choose a picture with a QFileDialog. Now you can choose a picture and it will shows on the background of the view...it works fine!

But I have a problem:

The picture fills the complete background. If the background/the View greater than the picture (I have implemented a Zoom too), the picture will repeated on the complete background. But I want that the picture will show only one time at the background, the other space of the background shall be colored in white.

Here is my code:

QImage *loadedPicture = new QImage( sPathOfPicture );
 
        //Brush erstellen und Image als Brush setzen
        brushBackground = new QBrush( *loadedPicture );
 
        //Hintergrund-Brush der Zeichenfläche zuweisen
        this->setBackgroundBrush( *brushBackground );
        this->setCacheMode(QGraphicsView::CacheBackground);

QImage *loadedPicture = new QImage( sPathOfPicture );

        //Brush erstellen und Image als Brush setzen
        brushBackground = new QBrush( *loadedPicture );

        //Hintergrund-Brush der Zeichenfläche zuweisen
        this->setBackgroundBrush( *brushBackground );
        this->setCacheMode(QGraphicsView::CacheBackground);

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I have googled about this problem, but I can't find any solutions except like "You can reimplement the drawBackground-Methode", etc. but because I'm a newbie, I don't know how I have to do that.

Please, can anyone help me with my problem!

Thanks

PS.: I hope you can read my bad english!