Position in itemChange

[sihnatse]

Virtual function in QGraphicsItem interface

QVariant itemChange(GraphicsItemChange change, const QVariant &value) override;

strangely provides value that either in scene or local coordinates. Maybe anyone has idea why?

Problem description: At first, when all graphics items get shown, value always is in scene coordinate. Moving any item works fine. Then, after move is completed, the next move makes value to be in local coordinate. Visually it appears as sudden jump to the origin (0,0).

[SGaist]

Hi,

Implemented like that ?

[sihnatse]

@SGaist Thanks for reply. Yes, like that. I suspect some initialization state on scene/view/items, because after value switches to local item coordinates, it says in local coordinates all the time.

PS. There is more logic in itemChange in fact, but it all commented out to localize the problem.

[SGaist]

@sihnatse do you have the same issue if you use only the code of the doc snippet ?

[sihnatse]

@SGaist Yes, if the doc snippet is copypasted, and everything else is commented out, - same issue.

I'll try on new project, maybe got any new ideas.