Updates the scene rect for this item.
        
        :param      *args

def setSceneRect( self, *args ):
        """
        Updates the scene rect for this item.
        
        :param      *args
        """
        h = self.height()
        super(XCalendarScene, self).setSceneRect(*args)
        if ( self.currentMode() != XCalendarScene.Mode.Month ):
            rect = self.sceneRect()
            rect.setHeight(h)
            super(XCalendarScene, self).setSceneRect(rect)
        
        self.markForRebuild()