pyqtgraph/graphicsItems/GraphicsObject.py
Luke Campagnola 6932c34126 - Added workaround for Qt bug: https://bugreports.qt-project.org/browse/QTBUG-18616. (GraphicsItem.setParent needs to check for scene change first)
This _could_ cause other problems, but they will certainly be fewer than the existing problems.

- Fixed bugs with ViewBox linking to views which are subsequently deleted
2012-06-18 14:00:19 -04:00

30 lines
1.1 KiB
Python

from pyqtgraph.Qt import QtGui, QtCore
from .GraphicsItem import GraphicsItem
__all__ = ['GraphicsObject']
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>`)
"""
def __init__(self, *args):
QtGui.QGraphicsObject.__init__(self, *args)
GraphicsItem.__init__(self)
def itemChange(self, change, value):
ret = QtGui.QGraphicsObject.itemChange(self, change, value)
if change in [self.ItemParentHasChanged, self.ItemSceneHasChanged]:
self._updateView()
return ret
def setParentItem(self, parent):
## Workaround for Qt bug: https://bugreports.qt-project.org/browse/QTBUG-18616
if parent is not None:
pscene = parent.scene()
if pscene is not None and self.scene() is not pscene:
pscene.addItem(self)
return QtGui.QGraphicsObject.setParentItem(self, parent)