QGraphicsView and QGraphicsScene geometry

[d_stranz]

In your resize event, you could try a call to

QGraphicsView::fitInView( scene().sceneRect(), Qt::KeepAspectRatio );

QGraphicsView::fitInView( scene().sceneRect(), Qt::KeepAspectRatio );

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This will maintain the same relative sizes and aspect ratio of everything in the scene, *except* those items with the QGraphicsItem::ItemIgnoresTransformations flag set. So if your tach's rect is square in scene coordinates, it will be square in the view.