pyqtgraph/graphicsItems/GraphicsObject.py

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from pyqtgraph.Qt import QtGui, QtCore
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from .GraphicsItem import GraphicsItem
__all__ = ['GraphicsObject']
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class GraphicsObject(GraphicsItem, QtGui.QGraphicsObject):
"""
**Bases:** :class:`GraphicsItem <pyqtgraph.graphicsItems.GraphicsItem>`, :class:`QtGui.QGraphicsObject`
Extension of QGraphicsObject with some useful methods (provided by :class:`GraphicsItem <pyqtgraph.graphicsItems.GraphicsItem>`)
"""
_qtBaseClass = QtGui.QGraphicsObject
def __init__(self, *args):
QtGui.QGraphicsObject.__init__(self, *args)
self.setFlag(self.ItemSendsGeometryChanges)
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GraphicsItem.__init__(self)
def itemChange(self, change, value):
ret = QtGui.QGraphicsObject.itemChange(self, change, value)
if change in [self.ItemParentHasChanged, self.ItemSceneHasChanged]:
self._updateView()
if change in [self.ItemPositionHasChanged, self.ItemTransformHasChanged]:
self.informViewBoundsChanged()
return ret