Don't copy the context menu of ViewBoxes.

This allows customization of the context menu of a ViewBox simply by
calling viewbox.menu.addAction(...).  See issue #13.  Also some cleanup.

pyqtgraph/graphicsItems/ViewBox/ViewBox.py

@@ -1054,26 +1054,15 @@ class ViewBox(GraphicsWidget):
         if ev.button() == QtCore.Qt.RightButton and self.menuEnabled():
             ev.accept()
             self.raiseContextMenu(ev)
-    
+
     def raiseContextMenu(self, ev):
-        #print "viewbox.raiseContextMenu called."
-        
-        #menu = self.getMenu(ev)
         menu = self.getMenu(ev)
         self.scene().addParentContextMenus(self, menu, ev)
-        #print "2:", [str(a.text()) for a in self.menu.actions()]
-        pos = ev.screenPos()
-        #pos2 = ev.scenePos()
-        #print "3:", [str(a.text()) for a in self.menu.actions()]
-        #self.sigActionPositionChanged.emit(pos2)
+        menu.popup(ev.screenPos().toPoint())
 
-        menu.popup(QtCore.QPoint(pos.x(), pos.y()))
-        #print "4:", [str(a.text()) for a in self.menu.actions()]
-        
     def getMenu(self, ev):
-        self._menuCopy = self.menu.copy()  ## temporary storage to prevent menu disappearing
-        return self._menuCopy
-        
+        return self.menu
+
     def getContextMenus(self, event):
         if self.menuEnabled():
             return self.menu.subMenus()

pyqtgraph/graphicsItems/ViewBox/ViewBoxMenu.py

@@ -275,4 +275,4 @@ class ViewBoxMenu(QtGui.QMenu):
         
 from .ViewBox import ViewBox
         
-    
+