304             style=wx.HSCROLL | wx.VSCROLL)

   304             style=wx.HSCROLL | wx.VSCROLL)

   305         self._init_menus()

   305         self._init_menus()

   306         # Adding a rubberband to Viewer

   306         # Adding a rubberband to Viewer

   307         self.rubberBand = RubberBand(drawingSurface=self)

   307         self.rubberBand = RubberBand(drawingSurface=self)

   308         self.SetBackgroundColour(wx.Colour(255,255,255))

   308         self.SetBackgroundColour(wx.Colour(255,255,255))

   309         self.ResetView()

   310         self.ResetView()

   310         self.Scaling = None

   311         self.Scaling = None

   311         self.DrawGrid = True

   312         self.DrawGrid = True

   312         self.GridBrush = wx.TRANSPARENT_BRUSH

   313         self.GridBrush = wx.TRANSPARENT_BRUSH

   313         self.PageSize = None

   314         self.PageSize = None