from ..Qt import QtGui, QtCore from ..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 `, :class:`QtGui.QGraphicsWidget` Extends QGraphicsWidget with several helpful methods and workarounds for PyQt bugs. Most of the extra functionality is inherited from :class:`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