Can a class derived from QGraphicsWidget override boundingRect()?

[patrcki]

We have a class that is derived from QGraphicsWidget that overrides boundingRect(). This seems a little counter-intuitive to me given that boundingRect() (which is a pure virtual function of QGraphicsItem) is already implemented by QGraphicsWidget. I'm keen to know if this aligns to best practices as the QGraphicsWidget docs aren't very clear on this.

A few more details about our class implementation:

• boundingRect() has been overridden to return the collision geometry.
• resize() is being called such that rect() returns a RectF that represents the actual model data (the are we paint). This can be smaller than the collision geometry -- we force the object to have a minimum collision size in the boundingRect() function.

Is this an ill-advised setup? Are there any repercussions for doing this?

[Asperamanca]

Question is why you use QGraphicsWidget at all, instead of QGraphicsItem or QGraphicsObject?

In my book, there are three main reasons to use QGraphicsWidget:

• I want to use QGraphicsLayouts
• I want something with a geometry I can explicitly set, instead of having to write my own logic for that.
• I am lazy and don't want to reimplement boundingRect and paint

[patrcki]

This post is deleted!

[patrcki]

@Asperamanca Thanks for the reply, that makes total sense! We'll look to rectify this bit of code -- it's functional as is but doesn't seem like good practice.