slicing QGraphicsItem

Hi,
I have an item inherited from QGraphicsItem
I draw in the item (using QPainterPath)
Then I want to do 2 things:
Scale the item so that the QPainterPath boundaries will have the item size
Resize the item to the original size so that it will include only the QPainterPath
I managed to do the first mission using transform
How can I set the item's boundaries to that of the enlarged QPainterPath

Code:

---

def updateTransform(self):
    self.dx = self.boundingRect().width()/self.charPath.boundingRect().width()
    self.dy = self.boundingRect().height()/self.charPath.boundingRect().height()
    transform = self.transform()
    transform.scale(self.dx,self.dy)
    self.setTransform(transform)
    self.prepareGeometryChange()
    # here I want to set the new boundingRect
 
def boundingRect(self):
    return self.rect

---

Quote:

---

Originally Posted by hindy.ilan@gmail.com

How can I set the item's boundaries to that of the enlarged QPainterPath

---

Return it as the item's boundingRect.

I tried to return the bounding rect of the QPainterPath but it returned the bounding rect before the scale
Ilan

The solution was to use QGraphicsPathItem
This item can contain QPainterPath and can be scaled and moved
Ilan

Transforms are external to the item - they take the item (including its bounding rect) and transform that. If you want to scale the path "internal" to the item, you should do that in the item itself (e.g. its paint() routing) and take that into consideration when returning the bounding rectangle.