preferences.py 文件源码

def add_spin(self, label, key, adjust_props={}, spin_props={}, type_=int):
        def on_changed(spin):
            value = None

            if type_ is int:
                value = spin.get_value_as_int()
            else:
                value = spin.get_value()

            self._settings[key] = value

        adjust_default = {
            'lower': 0,
            'upper': 100,
            'step_increment': 1
        }
        adjustment = Gtk.Adjustment()
        adjustment.set_lower(
            adjust_props.get('lower', adjust_default['lower'])
        )
        adjustment.set_upper(
            adjust_props.get('upper', adjust_default['upper'])
        )
        adjustment.set_step_increment(
            adjust_props.get('step_increment', adjust_default['step_increment'])
        )


        spin_button = Gtk.SpinButton()
        spin_button.set_adjustment(adjustment)
        spin_button.set_numeric(True)
        spin_button.set_snap_to_ticks(True)
        spin_button.set_value(self._settings[key])
        spin_button.connect('value-changed', on_changed)

        if type_ is float:
            spin_button.set_digits(2)

        return self.add_row(label, spin_button, True)