widgets.py 文件源码

def __init__(self, builder):
        GObject.GObject.__init__(self)
        self._changing_volume = False
        self._setting_volume = False

        # Widgets
        self._header_bar = builder.get_object('headerbar')
        self._stack_switcher = StackSwitcher(builder)
        self._button_connect = builder.get_object('headerbar-connection')
        self._button_playpause = builder.get_object('headerbar-playpause')
        self._button_volume = builder.get_object('headerbar-volume')

        # Signals
        self._stack_switcher.connect('stack-switched', self.on_stack_switched)
        self._button_handlers = {
            'on_headerbar-connection_active_notify': self.on_connection_active_notify,
            'on_headerbar-connection_state_set': self.on_connection_state_set,
            'on_headerbar-playpause_toggled': self.on_playpause_toggled,
            'on_headerbar-volume_value_changed': self.on_volume_changed,
            'on_headerbar-volume_button_press_event': self.on_volume_press,
            'on_headerbar-volume_button_release_event': self.on_volume_release
        }