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from pyqtgraph.Qt import QtGui, QtCore
from pyqtgraph.GraphicsScene import GraphicsScene
from .GraphicsItem import GraphicsItem
__all__ = ['GraphicsWidget']
class GraphicsWidget(GraphicsItem, QtGui.QGraphicsWidget):
_qtBaseClass = QtGui.QGraphicsWidget
def __init__(self, *args, **kargs):
"""
**Bases:** :class:`GraphicsItem <pyqtgraph.GraphicsItem>`, :class:`QtGui.QGraphicsWidget`
Extends QGraphicsWidget with several helpful methods and workarounds for PyQt bugs.
Most of the extra functionality is inherited from :class:`GraphicsItem <pyqtgraph.GraphicsItem>`.
"""
QtGui.QGraphicsWidget.__init__(self, *args, **kargs)
GraphicsItem.__init__(self)
## done by GraphicsItem init
#GraphicsScene.registerObject(self) ## workaround for pyqt bug in graphicsscene.items()
# Removed due to https://bugreports.qt-project.org/browse/PYSIDE-86
#def itemChange(self, change, value):
## BEWARE: Calling QGraphicsWidget.itemChange can lead to crashing!
##ret = QtGui.QGraphicsWidget.itemChange(self, change, value) ## segv occurs here
## The default behavior is just to return the value argument, so we'll do that
## without calling the original method.
#ret = value
#if change in [self.ItemParentHasChanged, self.ItemSceneHasChanged]:
#self._updateView()
#return ret
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
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