> From: BRM <bm_witn...@yahoo.com> >I have three custom QGraphicsWidgets. Two of them belong to a custom layout >that is assigned to the third: >widget1 > - custom layout > - widget2 > - widget3 >I am trying to move widget2 to overlay widget3 at specific coordinates; >however, the results are a bit confusing. > Widget3 has a signal to notify widget2 of the coordinates it is to align two. > Both sets are converted to Scene > Coordinates before being emitted via the signal: > Q_EMIT coordinateNotifier(mapToScene(coordinate); > >This is then received by the widget2 which converts it to local coordinates: > >storedCoordinate = mapFromScene(remoteCoordinate); > >And then calls a reposition which converts it to Parent coordinates: > >QPointF origin = mapToParent(storedCoordinate); > >It then sets its position to this new coordinate: > >setPos(origin); > >However, everytime it sets its position, the overlay widget moves increasingly >farther away from where it should be. Kind of random in where it goes, but >kind of not in that is does mostly the same thing every time.
Namely for the e-mail archives....but found my own dumb bug - I got it correct above, but had a mapFromParent() on the origin which made it go all over the place. While the inconsistency was still not quite expected, it is nice as it showed a glaring issue right up front. (It would have been quite a pain finding it otherwise.) Tired vs Fresh minds... Ben _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
