def on_newBtn_clicked(self, e):
try:
self.newZoneDialog
except AttributeError:
self.newZoneDialog = NewZoneDialog(self.app)
bbox = self.app.get_frame_bounds()
self.app.newZone = Zone(self.app,
self.app.strings.getString("New_zone"),
"rectangle",
",".join(["%0.4f" % x for x in bbox]), "")
self.newZoneDialog.update_gui_from_preferences()
self.newZoneDialog.show()
