def on_open_output_tool_clicked(self):
        """Autoconnect slot activated when open output tool button is clicked.
        """
        output_path = self.output_path.text()
        if not output_path:
            output_path = os.path.expanduser('~')
        # noinspection PyCallByClass,PyTypeChecker
        filename, __ = QFileDialog.getSaveFileName(
            self, tr('Output file'), output_path, tr('Raster file (*.tif)'))
        if filename:
            self.output_path.setText(filename)
Autoconnect slot activated when open output tool button is clicked.