pyqtgraph/graphicsItems/GraphicsWidget.py

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from pyqtgraph.Qt import QtGui, QtCore
from pyqtgraph.GraphicsScene import GraphicsScene
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from .GraphicsItem import GraphicsItem
__all__ = ['GraphicsWidget']
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class GraphicsWidget(GraphicsItem, QtGui.QGraphicsWidget):
_qtBaseClass = QtGui.QGraphicsWidget
def __init__(self, *args, **kargs):
"""
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**Bases:** :class:`GraphicsItem <pyqtgraph.GraphicsItem>`, :class:`QtGui.QGraphicsWidget`
Extends QGraphicsWidget with several helpful methods and workarounds for PyQt bugs.
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Most of the extra functionality is inherited from :class:`GraphicsItem <pyqtgraph.GraphicsItem>`.
"""
QtGui.QGraphicsWidget.__init__(self, *args, **kargs)
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GraphicsItem.__init__(self)
## done by GraphicsItem init
#GraphicsScene.registerObject(self) ## workaround for pyqt bug in graphicsscene.items()
## Removed because this causes segmentation faults. Don't know why.
# def itemChange(self, change, value):
# ret = QtGui.QGraphicsWidget.itemChange(self, change, value) ## segv occurs here
# if change in [self.ItemParentHasChanged, self.ItemSceneHasChanged]:
# self._updateView()
# return ret
#def getMenu(self):
#pass
def setFixedHeight(self, h):
self.setMaximumHeight(h)
self.setMinimumHeight(h)
def setFixedWidth(self, h):
self.setMaximumWidth(h)
self.setMinimumWidth(h)
def height(self):
return self.geometry().height()
def width(self):
return self.geometry().width()
def boundingRect(self):
br = self.mapRectFromParent(self.geometry()).normalized()
#print "bounds:", br
return br
def shape(self): ## No idea why this is necessary, but rotated items do not receive clicks otherwise.
p = QtGui.QPainterPath()
p.addRect(self.boundingRect())
#print "shape:", p.boundingRect()
return p