[Qt-interest] I give up with qgraphicsscene and qgraphicsview with stationary items

[Jan Ekholm]

On Tuesday 23 March 2010, Kari Laine wrote:
 
> What I have been trying is to have fixed texts, lines and polylines in
> relation to view. So that user scrolls scene those items stay put in
> relation to view.
> I was able to get stationary lines with drawForeground. But those are
> QPainterPaths which are not moveable and you can not select them.
> Is it so?

I had the same problem for a game view where there's a big scrolling map in 
the background and "HUD like" information elements in the foreground. I solved 
it by implementing own scrolling, ie. I don't use the scrollbars of the view 
at all, but instead handle scrolling through "flicking" the map. Scrollbars 
like that don't look ok in a game anyway, so it was no loss at all. The 
flicking then just moves a single item which contains the game board/map. This 
means that all other items that are toplevel (not children of the map) stay 
put.

-- 
Jan Ekholm
jan.ekholm at smultron.net