Non-scaling image added to scene

[wysota]

You have to change the bounding rect. Otherwise you'll get artifacts in an area that you paint and that is not inside your bounding rect.

QRectF MyGraphicsPixmapItem::boundingRect() const {
    QRectF r = QGraphicsPixmapItem::boundingRect();
    return r.translated(-r.width()*0.5, -r.height()*.0.5);
};

QRectF MyGraphicsPixmapItem::boundingRect() const {
    QRectF r = QGraphicsPixmapItem::boundingRect();
    return r.translated(-r.width()*0.5, -r.height()*.0.5);
};

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