mpris.py 文件源码

def __on_current_changed(self):
        current_track_id = get_current_track().id
        if current_track_id and current_track_id >= 0:
            self.__cozy_id = current_track_id
        else:
            self.__cozy_id = 0
        # We only need to recalculate a new trackId at song changes.
        self.__track_id = self.__get_media_id(self.__cozy_id)
        self.__rating = None
        self.__update_metadata()
        properties = {"Metadata": GLib.Variant("a{sv}", self.__metadata),
                      "CanPlay": GLib.Variant("b", True),
                      "CanPause": GLib.Variant("b", True),
                      "CanGoNext": GLib.Variant("b", True),
                      "CanGoPrevious": GLib.Variant("b", True)}
        try:
            self.PropertiesChanged(self.__MPRIS_PLAYER_IFACE, properties, [])
        except Exception as e:
            print("MPRIS::__on_current_changed(): %s" % e)