BUG: On the Mac wxPython's event.GetX, event.GetY return nonsense for

the key events.  We work around the problem by getting the cached
interactor position in this case (which is set on other events like
mouse move, click etc.).

enthought/tvtk/pyface/ui/wx/scene.py

@@ -460,8 +460,11 @@ def OnKeyUp(self, event):
             # Set camera focal point.
             if key.lower() in ['f']:
                 if not modifiers:
-                    x = event.GetX()
-                    y = self._vtk_control.GetSize()[1] - event.GetY()
+                    if sys.platform == 'darwin':
+                        x, y = self._interactor.event_position
+                    else:
+                        x = event.GetX()
+                        y = self._vtk_control.GetSize()[1] - event.GetY()
                     data = self.picker.pick_world(x, y)
                     coord = data.coordinate
                     if coord is not None:                  
@@ -471,8 +474,11 @@ def OnKeyUp(self, event):
             # Handle picking.
             if key.lower() in ['p']:
                 if not modifiers:
-                    x = event.GetX()
-                    y = self._vtk_control.GetSize()[1] - event.GetY()
+                    if sys.platform == 'darwin':
+                        x, y = self._interactor.event_position
+                    else:
+                        x = event.GetX()
+                        y = self._vtk_control.GetSize()[1] - event.GetY()
                     self.picker.pick(x, y)
                     return
                 else: