vtr_plugin.py 文件源码

def unload(self):
        if self._current_reader:
            self._current_reader.get_source().close_connection()
            self._current_reader = None

        try:
            self.iface.mapCanvas().xyCoordinates.disconnect(self._handle_mouse_move)
            QgsMapLayerRegistry.instance().layersWillBeRemoved.disconnect(self._on_remove)
            self.iface.newProjectCreated.disconnect(self._on_project_change)
            self.iface.projectRead.disconnect(self._on_project_change)
            self._debouncer.stop()
            self._debouncer.shutdown()
            self.iface.layerToolBar().removeAction(self.toolButtonAction)
            self.iface.removePluginVectorMenu("&Vector Tiles Reader", self.about_action)
            self.iface.removePluginVectorMenu("&Vector Tiles Reader", self.open_connections_action)
            self.iface.removePluginVectorMenu("&Vector Tiles Reader", self.reload_action)
            self.iface.removePluginVectorMenu("&Vector Tiles Reader", self.clear_cache_action)
            self.iface.addLayerMenu().removeAction(self.open_connections_action)
            logging.shutdown()
        except:
            pass