Calculate scene coordinates from QGraphicsLinearLayout

In my application I used custom objects which derive from QGraphicsWidget and I put them inside QGraphicsLinearLayout. But now I need to find scene co开发者_StackOverflow社区ordinates of each item. Is it possible? How?

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QGraphicsWidget inherits from QGraphicsObject which in turn inherits from QGraphicsItem. So you can use one of the mapToScene function to convert item coordinates to the scene ones.

For example:

QPointF p = myItem->mapToScene(QPointF(0,0));

will give you the scene location of the top left corner of the item.

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Use this method from QGraphicsItem which is a base of QGraphicsWidget:

myItem->scenePos()