code: def full_size(self):
          '''show image at full size'''
          self.dragpos = wx.Point(0, 0)
          self.zoom = 1.0
          self.need_redraw = Truf full_size(self):
          '''show image at full size'''
          self.dragpos = wx.Point(0, 0)
          self.zoom = 1.0
          self.need_redraw = True
docs: show image at full size