Advice on how to implement a rotating and zooming drawing canvas

[wysota]

As far as I know, you could only do that with classes derived from QPaintDevice, you can add items to the scene but not draw directly in it, that is what I readed in the documentation, or am I missing something here?

You can add your scribbling as items to the scene. You'd have to do it when subclassing QWidget too, just without any dedicated infrastructure.

I was going to make a class derived from QWidget (also using QImage for loading images), to make me a drawing canvas Widget, then put that in the scene and rotate it with a view. I saw this canvas approach in the Scribble and Tablet examples that comes with Qt.

And how would your paintEvent() for the widget look like?