Elegant way of getting if element is focused in function QGraphicsItem::shape()

[tuxit]

hello,

i can learn if my object inherits from QGraphicsItem is focused in paint method:

void MyQGraphicsItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *)
{
    if (option->state & QStyle::State_HasFocus) {
        //if focus some shape
 
    } else {
        //if no focus another shape
    }
}

void MyQGraphicsItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *)
{
    if (option->state & QStyle::State_HasFocus) {
        //if focus some shape
       
    } else {
        //if no focus another shape
    }
}

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but i must click it and the shape must change whether it is focused or not.
how can i get if focused information in

QPainterPath QGraphicsItem::shape() const

QPainterPath QGraphicsItem::shape() const

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method in an appropriate way?
I think to declare a global variable but i do not like this idea.
thanks