Python MediaList.previous方法代码示例

# 需要导入模块: from pp_medialist import MediaList [as 别名]
# 或者: from pp_medialist.MediaList import previous [as 别名]
class MediaShow:


# *******************
# External interface
# ********************

    def __init__(self,
                            show,
                            canvas,
                            showlist,
                            pp_home,
                            pp_profile):
        """ canvas - the canvas that the menu is to be written on
            show - the dictionary fo the show to be played
            pp_home - Pi presents data_home directory
            pp_profile - Pi presents profile directory
        """

        self.mon=Monitor()
        self.mon.on()
        
        #instantiate arguments
        self.show =show
        self.showlist=showlist
        self.canvas=canvas
        self.pp_home=pp_home
        self.pp_profile=pp_profile

        # open resources
        self.rr=ResourceReader()

        # Init variables
        self.player=None
        self.shower=None
        self._poll_for_interval_timer=None
        self._poll_for_continue_timer=None
        self._waiting_for_interval=False
        self._interval_timer=None
        self.error=False
        
        self._interval_timer_signal=False
        self._end_mediashow_signal=False
        self._next_track_signal=False
        self._previous_track_signal=False
        self._play_child_signal = False
        self._req_next='nil'

        self._state='closed'


    def play(self,end_callback,ready_callback=None, top=False,command='nil'):

        """ displays the mediashow
              end_callback - function to be called when the menu exits
              ready_callback - callback when menu is ready to display (not used)
              top is True when the show is top level (run from [start])
        """

        #instantiate the arguments
        self._end_callback=end_callback
        self._ready_callback=ready_callback
        self.top=top
        self.command=command
        self.mon.log(self,"Starting show: " + self.show['show-ref'])

        # check  data files are available.
        self.media_file = self.pp_profile + "/" + self.show['medialist']
        if not os.path.exists(self.media_file):
            self.mon.err(self,"Medialist file not found: "+ self.media_file)
            self._end('error',"Medialist file not found")


        #create a medialist for the mediashow and read it.
        self.medialist=MediaList()
        if self.medialist.open_list(self.media_file,self.showlist.sissue())==False:
            self.mon.err(self,"Version of medialist different to Pi Presents")
            self._end('error',"Version of medialist different to Pi Presents")

        self._wait_for_trigger()


   # respond to key presses.
    def key_pressed(self,key_name):
        self.mon.log(self,"received key: " + key_name)
        
        if key_name=='':
            pass
        
        elif key_name=='escape':
            # if next lower show is running pass down to stop the show and lower level
            if self.shower<>None:
                self.shower.key_pressed(key_name)
            # if not at top stop the show
            else:
                if self.top == False:
                    self._end_mediashow_signal=True
                    # and if a track is running stop that first
                    if self.player<>None:
                        self.player.key_pressed(key_name)
#.........这里部分代码省略.........

# 需要导入模块: from pp_medialist import MediaList [as 别名]
# 或者: from pp_medialist.MediaList import previous [as 别名]
class MenuShow(Show):
    def __init__(self, show_id, show_params, root, canvas, showlist, pp_dir, pp_home, pp_profile, command_callback):

        """
            show_id - index of the top level show caling this (for debug only)
            show_params - dictionary section for the menu
            canvas - the canvas that the menu is to be written on
            showlist  - the showlist
            pp_dir - Pi Presents directory
            pp_home - Pi presents data_home directory
            pp_profile - Pi presents profile directory
        """

        # init the common bits
        Show.base__init__(
            self, show_id, show_params, root, canvas, showlist, pp_dir, pp_home, pp_profile, command_callback
        )

        # instatiatate the screen driver - used only to access enable and hide click areas
        self.sr = ScreenDriver()

        self.controlsmanager = ControlsManager()

        # init variables
        self.show_timeout_timer = None
        self.track_timeout_timer = None
        self.next_track_signal = False
        self.next_track = None
        self.menu_index = 0
        self.menu_showing = True
        self.req_next = ""

    def play(self, end_callback, show_ready_callback, parent_kickback_signal, level, controls_list):
        """ displays the menu 
              end_callback - function to be called when the menu exits
              show_ready_callback - callback when menu is ready to display (not used)
              level is 0 when the show is top level (run from [start] or from show control)
              parent_kickback_signal  - not used other than it being passed to a show
        """
        # need to instantiate the medialist here as not using gapshow
        self.medialist = MediaList("ordered")

        Show.base_play(self, end_callback, show_ready_callback, parent_kickback_signal, level, controls_list)

        self.mon.trace(self, self.show_params["show-ref"])

        # parse the show and track timeouts
        reason, message, self.show_timeout = Show.calculate_duration(self, self.show_params["show-timeout"])
        if reason == "error":
            self.mon.err(self, "Show Timeout has bad time: " + self.show_params["show-timeout"])
            self.end("error", "show timeout, bad time")

        reason, message, self.track_timeout = Show.calculate_duration(self, self.show_params["track-timeout"])
        if reason == "error":
            self.mon.err(self, "Track Timeout has bad time: " + self.show_params["track-timeout"])
            self.end("error", "track timeout, bad time")

        # and delete eggtimer
        if self.previous_shower is not None:
            self.previous_shower.delete_eggtimer()

        # and display the menu
        self.do_menu_track()

    # ********************
    # respond to inputs.
    # ********************

    # exit received from another concurrent show
    def exit(self):
        self.stop_timers()
        Show.base_exit(self)

    #  show timeout happened
    def show_timeout_stop(self):
        self.stop_timers()
        Show.base_show_timeout_stop(self)

    # terminate Pi Presents
    def terminate(self):
        self.stop_timers()
        Show.base_terminate(self)

    def handle_input_event(self, symbol):
        Show.base_handle_input_event(self, symbol)

    def handle_input_event_this_show(self, symbol):
        # menushow has only internal operation
        operation = self.base_lookup_control(symbol, self.controls_list)
        self.do_operation(operation)

    def do_operation(self, operation):
        # service the standard inputs for this show

        self.mon.trace(self, operation)
        if operation == "exit":
            self.exit()

        elif operation == "stop":
            self.stop_timers()
#.........这里部分代码省略.........

# 需要导入模块: from pp_medialist import MediaList [as 别名]
# 或者: from pp_medialist.MediaList import previous [as 别名]
class MenuShow:
    """ Displays a menu with optional hint below it. User can traverse the menu and
              select a track using key or button presses.
        Interface:
         * play - displays the menu and selects the first entry
         * input_pressed,  - receives user events passes them to a Player if a track is playing,
                otherwise actions them with _next, _previous, _play_selected_track, _end
         Optional display of eggtimer by means of Players ready_callback
         Supports imageplayer, videoplayer,messagplayer,audioplayer,menushow,mediashow
         Destroys itself on exit
    """

# *********************
# external interface
# ********************

    def __init__(self,
                            show_params,
                             root,
                            canvas,
                            showlist,
                             pp_dir,
                            pp_home,
                            pp_profile):
        """ canvas - the canvas that the menu is to be written on
            show - the name of the configuration dictionary section for the menu
            showlist  - the showlist
            pp_home - Pi presents data_home directory
            pp_profile - Pi presents profile directory"""
        
        self.mon=Monitor()
        self.mon.on()
        
        self.display_guidelines_command=show_params['menu-guidelines']
        self.display_guidelines=self.display_guidelines_command

        
        #instantiate arguments
        self.show_params=show_params
        self.root=root
        self.canvas=canvas
        self.showlist=showlist
        self.pp_dir=pp_dir
        self.pp_home=pp_home
        self.pp_profile=pp_profile

        # open resources
        self.rr=ResourceReader()
        
        # init variables
        self.drawn  = None
        self.player=None
        self.shower=None
        self.menu_timeout_running=None
        self.error=False




    def play(self,show_id,end_callback,ready_callback,top=False,command='nil'):
        """ displays the menu 
              end_callback - function to be called when the menu exits
              ready_callback - callback when menu is ready to display (not used)
              top is True when the show is top level (run from [start])
        """
        
        #instantiate arguments
        self.show_id=show_id
        self.end_callback=end_callback
        self.ready_callback=ready_callback
        self.top=top
        self.command=command

        # check  data files are available.
        self.menu_file = self.pp_profile + "/" + self.show_params['medialist']
        if not os.path.exists(self.menu_file):
            self.mon.err(self,"Medialist file not found: "+ self.menu_file)
            self.end('error',"Medialist file not found")
        
        #create a medialist for the menu and read it.
        self.medialist=MediaList()
        if self.medialist.open_list(self.menu_file,self.showlist.sissue()) == False:
            self.mon.err(self,"Version of medialist different to Pi Presents")
            self.end('error',"Version of medialist different to Pi Presents")

        #get control bindings for this show if top level
        controlsmanager=ControlsManager()
        if self.top==True:
            self.controls_list=controlsmanager.default_controls()
            # and merge in controls from profile
            self.controls_list=controlsmanager.merge_show_controls(self.controls_list,self.show_params['controls'])

           
        if self.show_params['has-background']=="yes":
            background_index=self.medialist.index_of_track ('pp-menu-background')
            if background_index>=0:
                self.menu_img_file = self.complete_path(self.medialist.track(background_index)['location'])
                if not os.path.exists(self.menu_img_file):
                    self.mon.err(self,"Menu background file not found: "+ self.menu_img_file)
                    self.end('error',"Menu background file not found")
#.........这里部分代码省略.........

# 需要导入模块: from pp_medialist import MediaList [as 别名]
# 或者: from pp_medialist.MediaList import previous [as 别名]
class MediaShow:


# *******************
# External interface
# ********************

    def __init__(self,
                            show_params,
                             root,
                            canvas,
                            showlist,
                            pp_dir,
                            pp_home,
                            pp_profile):
        """ canvas - the canvas that the menu is to be written on
            show - the dictionary fo the show to be played
            pp_home - Pi presents data_home directory
            pp_profile - Pi presents profile directory
        """

        self.mon=Monitor()
        self.mon.on()
        
        #instantiate arguments
        self.show_params =show_params
        self.showlist=showlist
        self.root=root
        self.canvas=canvas
        self.pp_dir=pp_dir
        self.pp_home=pp_home
        self.pp_profile=pp_profile

        # open resources
        self.rr=ResourceReader()

        # Init variables
        self.player=None
        self.shower=None
        self.poll_for_interval_timer=None
        self.poll_for_continue_timer=None
        self.waiting_for_interval=False
        self.interval_timer=None
        self.duration_timer=None
        self.error=False
        
        self.interval_timer_signal=False
        self.end_trigger_signal=False
        self.end_mediashow_signal=False
        self.next_track_signal=False
        self.previous_track_signal=False
        self.play_child_signal = False
        self.req_next='nil'

        #create and instance of TimeOfDay scheduler so we can add events
        self.tod=TimeOfDay()

        self.state='closed'


    def play(self,show_id,end_callback,show_ready_callback, top=False,command='nil'):

        """ displays the mediashow
              end_callback - function to be called when the menu exits
              ready_callback - callback when menu is ready to display (not used)
              top is True when the show is top level (run from [start])
        """

        #instantiate the arguments
        self.show_id=show_id
        self.end_callback=end_callback
        self.show_ready_callback=show_ready_callback
        self.top=top
        self.command=command
        self.mon.log(self,self.show_params['show-ref']+ ' '+ str(self.show_id)+ ": Starting show")

        # check  data files are available.
        self.media_file = self.pp_profile + "/" + self.show_params['medialist']
        if not os.path.exists(self.media_file):
            self.mon.err(self,"Medialist file not found: "+ self.media_file)
            self.end('error',"Medialist file not found")


        #create a medialist for the mediashow and read it.
        self.medialist=MediaList(self.show_params['sequence'])
        if self.medialist.open_list(self.media_file,self.showlist.sissue())==False:
            self.mon.err(self,"Version of medialist different to Pi Presents")
            self.end('error',"Version of medialist different to Pi Presents")

        #get controls for this show if top level
        controlsmanager=ControlsManager()
        if self.top==True:
            self.controls_list=controlsmanager.default_controls()
            # and merge in controls from profile
            self.controls_list=controlsmanager.merge_show_controls(self.controls_list,self.show_params['controls'])


        #set up the time of day triggers for the show
        if self.show_params['trigger']in('time','time-quiet'):
            error_text=self.tod.add_times(self.show_params['trigger-input'],id(self),self.tod_start_callback,self.show_params['trigger'])
#.........这里部分代码省略.........

# 需要导入模块: from pp_medialist import MediaList [as 别名]
# 或者: from pp_medialist.MediaList import previous [as 别名]
class MenuShow:
    """ Displays a menu with optional hint below it. User can traverse the menu and
              select a track using key or button presses.
        Interface:
         * play - displays the menu and selects the first entry
         * key_pressed, button_pressed - receives user events passes them to a Player if a track is playing,
                otherwise actions them with _next, _previous, _play_selected_track, _end
         Optional display of eggtimer by means of Players ready_callback
         Supports imageplayer, videoplayer,messagplayer,audioplayer,menushow,mediashow
         Destroys itself on exit
    """

# *********************
# external interface
# ********************

    def __init__(self,
                            show_params,
                            canvas,
                            showlist,
                            pp_home,
                            pp_profile):
        """ canvas - the canvas that the menu is to be written on
            show - the name of the configuration dictionary section for the menu
            showlist  - the showlist
            pp_home - Pi presents data_home directory
            pp_profile - Pi presents profile directory"""
        
        self.mon=Monitor()
        self.mon.on()
        
        #instantiate arguments
        self.show_params=show_params
        self.showlist=showlist
        self.canvas=canvas
        self.pp_home=pp_home
        self.pp_profile=pp_profile

        # open resources
        self.rr=ResourceReader()
        
        # init variables
        self.drawn  = None
        self.player=None
        self.shower=None
        self.menu_timeout_running=None
        self.error=False



    def play(self,show_id,end_callback,ready_callback=None,top=False,command='nil'):
        """ displays the menu 
              end_callback - function to be called when the menu exits
              ready_callback - callback when menu is ready to display (not used)
              top is True when the show is top level (run from [start])
        """
        
        #instantiate arguments
        self.show_id=show_id
        self.end_callback=end_callback
        self.ready_callback=ready_callback
        self.top=top
        self.command=command

        # check  data files are available.
        self.menu_file = self.pp_profile + "/" + self.show_params['medialist']
        if not os.path.exists(self.menu_file):
            self.mon.err(self,"Medialist file not found: "+ self.menu_file)
            self._end('error',"Medialist file not found")
        
        #create a medialist for the menu and read it.
        self.medialist=MediaList()
        if self.medialist.open_list(self.menu_file,self.showlist.sissue()) == False:
            self.mon.err(self,"Version of medialist different to Pi Presents")
            self._end('error',"Version of medialist different to Pi Presents")
           
        if self.show_params['has-background']=="yes":
            background_index=self.medialist.index_of_track ('pp-menu-background')
            if background_index>=0:
                self.menu_img_file = self.complete_path(self.medialist.track(background_index))
                if not os.path.exists(self.menu_img_file):
                    self.mon.err(self,"Menu background file not found: "+ self.menu_img_file)
                    self._end('error',"Menu background file not found")
            else:
                self.mon.err(self,"Menu background not found in medialist")
                self._end('error',"Menu background not found")

        self.egg_timer=None

        #start timeout alarm if required
        if int(self.show_params['timeout'])<>0:
            self.menu_timeout_running=self.canvas.after(int(self.show_params['timeout'])*1000,self._timeout_menu)
        
        if self.ready_callback<>None:
            self.ready_callback()
        
        self.canvas.delete(ALL)
        
        # display background image
        if self.show_params['has-background']=="yes":
#.........这里部分代码省略.........

# 需要导入模块: from pp_medialist import MediaList [as 别名]
# 或者: from pp_medialist.MediaList import previous [as 别名]
class MediaShow:

    # *******************
    # External interface
    # ********************

    def __init__(self, show_params, canvas, showlist, pp_home, pp_profile):
        """ canvas - the canvas that the menu is to be written on
            show - the dictionary fo the show to be played
            pp_home - Pi presents data_home directory
            pp_profile - Pi presents profile directory
        """

        self.mon = Monitor()
        self.mon.on()

        # instantiate arguments
        self.show_params = show_params
        self.showlist = showlist
        self.canvas = canvas
        self.pp_home = pp_home
        self.pp_profile = pp_profile

        # open resources
        self.rr = ResourceReader()

        # Init variables
        self.player = None
        self.shower = None
        self._poll_for_interval_timer = None
        self._poll_for_continue_timer = None
        self._waiting_for_interval = False
        self._interval_timer = None
        self.duration_timer = None
        self.error = False

        self._interval_timer_signal = False
        self._end_trigger_signal = False
        self._end_mediashow_signal = False
        self._next_track_signal = False
        self._previous_track_signal = False
        self._play_child_signal = False
        self._req_next = "nil"

        # create and instance of TimeOfDay scheduler so we can add events
        self.tod = TimeOfDay()

        self._state = "closed"

    def play(self, show_id, end_callback, ready_callback=None, top=False, command="nil"):

        """ displays the mediashow
              end_callback - function to be called when the menu exits
              ready_callback - callback when menu is ready to display (not used)
              top is True when the show is top level (run from [start])
        """

        # instantiate the arguments
        self.show_id = show_id
        self._end_callback = end_callback
        self._ready_callback = ready_callback
        self.top = top
        self.command = command
        self.mon.log(self, "Starting show: Id= " + str(self.show_id) + "  " + self.show_params["show-ref"])

        # check  data files are available.
        self.media_file = self.pp_profile + "/" + self.show_params["medialist"]
        if not os.path.exists(self.media_file):
            self.mon.err(self, "Medialist file not found: " + self.media_file)
            self._end("error", "Medialist file not found")

        # create a medialist for the mediashow and read it.
        self.medialist = MediaList()
        if self.medialist.open_list(self.media_file, self.showlist.sissue()) == False:
            self.mon.err(self, "Version of medialist different to Pi Presents")
            self._end("error", "Version of medialist different to Pi Presents")

        # set up the time of day triggers for the show
        if self.show_params["trigger"] in ("time", "time-quiet"):
            error_text = self.tod.add_times(
                self.show_params["trigger-input"], id(self), self.tod_start_callback, self.show_params["trigger"]
            )
            if error_text <> "":
                self.mon.err(self, error_text)
                self._end("error", error_text)

        if self.show_params["trigger-end"] == "time":
            # print self.show_params['trigger-end-time']
            error_text = self.tod.add_times(
                self.show_params["trigger-end-time"], id(self), self.tod_end_callback, "n/a"
            )
            if error_text <> "":
                self.mon.err(self, error_text)
                self._end("error", error_text)

        if self.show_params["trigger-end"] == "duration":
            error_text = self.calculate_duration(self.show_params["trigger-end-time"])
            if error_text <> "":
                self.mon.err(self, error_text)
                self._end("error", error_text)
#.........这里部分代码省略.........