I have a custom QGraphicsItem class in which I have overriden paint event as below
void MyRectangle::paint(QPainter *painter, const QStyleOptionGraphicsItem
*option, QWidget *widget)
{
QRectF rec = boundingRect();
//code to fill blured background fill
}
I need to fill the rec area with blured transparent effect. So that I can see the background of MyRectangle as blured.
It is not necessary to reinvent the wheel , QGraphicsItem supports QGraphicsEffect , and within those effects available is QGraphicsBlurEffect so you just have to use it:
QGraphicsBlurEffect *effect = new QGraphicsBlurEffect;
item->setGraphicsEffect(effect);
Outputs:
Note: If you want to create new effects a proper way is to inherit from QGraphicsEffect
and overwrite the draw()
method, so it is not necessary to create a class that implements the same effect for each item.
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