# Source code for pyqtgraph.graphicsItems.GraphicsObject

    from ..Qt import QT_LIB, QtWidgets

    if QT_LIB.startswith('PyQt'):
        from ..Qt import sip

    from .GraphicsItem import GraphicsItem

    __all__ = ['GraphicsObject']
    class GraphicsObject(GraphicsItem, QtWidgets.QGraphicsObject):
        """
        **Bases:** :class:`GraphicsItem <pyqtgraph.graphicsItems.GraphicsItem>`, :class:`QtWidgets.QGraphicsObject`

        Extension of QGraphicsObject with some useful methods (provided by :class:`GraphicsItem <pyqtgraph.graphicsItems.GraphicsItem>`)
        """
        _qtBaseClass = QtWidgets.QGraphicsObject
        def __init__(self, *args):
            self.__inform_view_on_changes = True
            QtWidgets.QGraphicsObject.__init__(self, *args)
            self.setFlag(self.GraphicsItemFlag.ItemSendsGeometryChanges)
            GraphicsItem.__init__(self)

        def itemChange(self, change, value):
            ret = super().itemChange(change, value)
            if change in [self.GraphicsItemChange.ItemParentHasChanged, self.GraphicsItemChange.ItemSceneHasChanged]:
                import types
                if isinstance(self.parentChanged, types.MethodType):
                    self.parentChanged()
                else:
                    # workaround PySide6 6.2.2 issue https://bugreports.qt.io/browse/PYSIDE-1730
                    getattr(self.__class__, 'parentChanged')(self)
            try:
                inform_view_on_change = self.__inform_view_on_changes
            except AttributeError:
                # It's possible that the attribute was already collected when the itemChange happened
                # (if it was triggered during the gc of the object).
                pass
            else:
                if inform_view_on_change and change in [self.GraphicsItemChange.ItemPositionHasChanged, self.GraphicsItemChange.ItemTransformHasChanged]:
                    self.informViewBoundsChanged()

            ## workaround for pyqt bug:
            ## http://www.riverbankcomputing.com/pipermail/pyqt/2012-August/031818.html
            if QT_LIB == 'PyQt5' and change == self.GraphicsItemChange.ItemParentChange and isinstance(ret, QtWidgets.QGraphicsItem):
                ret = sip.cast(ret, QtWidgets.QGraphicsItem)

            return ret