How to keep parts of a QGraphicsScene in view at all times, when scrolling

[nmather]

Thanks Marcel, I was able to achieve what I wanted using your suggestion.

The two widgets do scroll in one direction each, so in their paintEvents I get the GraphicsView's scrollbar positions and paint the widgets based on this position.

It feels a bit hackish, as the widget has to selectively paint itself based on the scrollbar position; I would rather it didn't have to worry about that, i.e. it just paints itself, and some item "viewing" it decides which portions of it to show. I may try making those two widgets in the margins inherit from AbstractScrollAreas at some point, but it works fine for now

[mr.costa]

I believe it would be much better to buid that with a Model/View, subclassing TableModelView to make custom painting.

[nmather]

Hi mr.costa

That occurred to me too, but two things stopped me trying it:

a) The central area has quite a lot of paint operations and moving items, as well as area selection -- I wasn't sure if doing all that in widget paint events would be efficient (Would be a problem?)

b) I'd already done most of the work in a QGraphicsView, so had a legacy system to contend with!

Someday when I get time to go back to it I want to try different methods with it.