import copy from pp_utils import Monitor, parse_rectangle class ShowManager(object): """ ShowManager manages PiPresents' concurrent shows. It does not manage sub-shows or child-shows but has a bit of common code to initilise them concurrent shows are always top level (level 0) shows: They can be opened/closed by the start show(open only) or by 'open/close myshow' in the Show Control field of players, by time of day sceduler or by OSC Two shows with the same show reference cannot be run concurrently as there is no way to reference an individual instance. However a workaround is to make the secong instance a subshow of a mediashow with a different reference. """ # Declare class variables shows=[] canvas=None #canvas for all shows shutdown_required=False SHOW_TEMPLATE=['',None] SHOW_REF= 0 # show-reference - name of the show as in editor SHOW_OBJ = 1 # the python object showlist=[] # Initialise class variables, first time through only in pipresents.py def init(self,canvas,all_shows_ended_callback,command_callback,showlist): ShowManager.all_shows_ended_callback=all_shows_ended_callback ShowManager.shows=[] ShowManager.shutdown_required=False ShowManager.canvas=canvas ShowManager.command_callback = command_callback ShowManager.showlist = showlist # ************************************** # functions to manipulate show register # ************************************** def register_shows(self): for show in ShowManager.showlist.shows(): if show['show-ref'] != 'start': reason,message=self.register_show(show['show-ref']) if reason =='error': return reason,message return 'normal','shows regiistered' def register_show(self,ref): registered=self.show_registered(ref) if registered == -1: ShowManager.shows.append(copy.deepcopy(ShowManager.SHOW_TEMPLATE)) index=len(ShowManager.shows)-1 ShowManager.shows[index][ShowManager.SHOW_REF]=ref ShowManager.shows[index][ShowManager.SHOW_OBJ]=None self.mon.trace(self,' - register show: show_ref = ' + ref + ' index = ' + str(index)) return'normal','show registered' else: # self.mon.err(self, ' more than one show in showlist with show-ref: ' + ref ) return 'error', ' more than one show in showlist with show-ref: ' + ref # is the show registered? # can be used to return the index to the show def show_registered(self,show_ref): index=0 for show in ShowManager.shows: if show[ShowManager.SHOW_REF] == show_ref: return index index+=1 return -1 # needs calling program to check that the show is not already running def set_running(self,index,show_obj): ShowManager.shows[index][ShowManager.SHOW_OBJ]=show_obj self.mon.trace(self, 'show_ref= ' + ShowManager.shows[index][ShowManager.SHOW_REF] + ' show_id= ' + str(index)) # is the show running? def show_running(self,index): if ShowManager.shows[index][ShowManager.SHOW_OBJ] is not None: return ShowManager.shows[index][ShowManager.SHOW_OBJ] else: return None def set_exited(self,index): ShowManager.shows[index][ShowManager.SHOW_OBJ]=None self.mon.trace(self,'show_ref= ' + ShowManager.shows[index][ShowManager.SHOW_REF] + ' show_id= ' + str(index)) # are all shows exited? def all_shows_exited(self): all_exited=True for show in ShowManager.shows: if show[ShowManager.SHOW_OBJ] is not None: all_exited=False return all_exited # fromat for printing def pretty_shows(self): shows='\n' for show in ShowManager.shows: shows += show[ShowManager.SHOW_REF] +'\n' return shows # ********************************* # show control # ********************************* # show manager can be initialised by a player, shower or by pipresents.py # if by pipresents.py then show_id=-1 def __init__(self,show_id,showlist,show_params,root,canvas,pp_dir,pp_profile,pp_home): self.show_id=show_id self.showlist=showlist self.show_params=show_params self.root=root self.show_canvas=canvas self.pp_dir=pp_dir self.pp_profile=pp_profile self.pp_home=pp_home self.mon=Monitor() def control_a_show(self,show_ref,show_command): if show_command == 'open': return self.start_show(show_ref) elif show_command == 'close': return self.exit_show(show_ref) else: return 'error','command not recognised '+ show_command def exit_all_shows(self): for show in ShowManager.shows: self.exit_show(show[ShowManager.SHOW_REF]) return 'normal','exited all shows' # kick off the exit sequence of a show by calling the shows exit method. # it will result in all the shows in a stack being closed and end_play_show being called def exit_show(self,show_ref): index=self.show_registered(show_ref) self.mon.log(self,"De-registering show "+ show_ref + ' show index:' + str(index)) show_obj=self.show_running(index) if show_obj is not None: self.mon.log(self,"Exiting show "+ show_ref + ' show index:' + str(index)) show_obj.exit() return 'normal','exited a concurrent show' def start_show(self,show_ref): index=self.show_registered(show_ref) if index <0: return 'error',"Show not found in showlist: "+ show_ref show_index = self.showlist.index_of_show(show_ref) show=self.showlist.show(show_index) reason,message,show_canvas=self.compute_show_canvas(show) if reason == 'error': return reason,message # print 'STARTING TOP LEVEL SHOW',show_canvas self.mon.sched(self,'Starting Show: ' + show_ref + ' from show: ' + self.show_params['show-ref']) self.mon.log(self,'Starting Show: ' + show_ref + ' from: ' + self.show_params['show-ref']) if self.show_running(index): self.mon.sched(self,"show already running so ignoring command: "+show_ref) self.mon.warn(self,"show already running so ignoring command: "+show_ref) return 'normal','this concurrent show already running' show_obj = self.init_show(index,show,show_canvas) if show_obj is None: return 'error',"unknown show type in start concurrent show - "+ show['type'] else: self.set_running(index,show_obj) # params - end_callback, show_ready_callback, parent_kickback_signal, level show_obj.play(self._end_play_show,None,False,0,[]) return 'normal','concurrent show started' # used by shows to create subshows or child shows def init_subshow(self,show_id,show,show_canvas): return self.init_show(show_id,show,show_canvas) def _end_play_show(self,index,reason,message): show_ref_to_exit =ShowManager.shows[index][ShowManager.SHOW_REF] show_to_exit =ShowManager.shows[index][ShowManager.SHOW_OBJ] self.mon.sched(self,'Closed show: ' + show_ref_to_exit) self.mon.log(self,'Exited from show: ' + show_ref_to_exit + ' ' + str(index) ) self.mon.log(self,'Exited with Reason = ' + reason) self.mon.trace(self,' Show is: ' + show_ref_to_exit + ' show index ' + str(index)) # closes the video/audio from last track then closes the track # print 'show to exit ',show_to_exit, show_to_exit.current_player,show_to_exit.previous_player self.set_exited(index) if self.all_shows_exited() is True: ShowManager.all_shows_ended_callback(reason,message) return reason,message # common function to initilaise the show by type def init_show(self,show_id,selected_show,show_canvas,): if selected_show['type'] == "mediashow": return MediaShow(show_id, selected_show, self.root, show_canvas, self.showlist, self.pp_dir, self.pp_home, self.pp_profile, ShowManager.command_callback) elif selected_show['type'] == "liveshow": return LiveShow(show_id, selected_show, self.root, show_canvas, self.showlist, self.pp_dir, self.pp_home, self.pp_profile, ShowManager.command_callback) elif selected_show['type'] == "radiobuttonshow": return RadioButtonShow(show_id, selected_show, self.root, show_canvas, self.showlist, self.pp_dir, self.pp_home, self.pp_profile, ShowManager.command_callback) elif selected_show['type'] == "hyperlinkshow": return HyperlinkShow(show_id, selected_show, self.root, show_canvas, self.showlist, self.pp_dir, self.pp_home, self.pp_profile, ShowManager.command_callback) elif selected_show['type'] == "menu": return MenuShow(show_id, selected_show, self.root, show_canvas, self.showlist, self.pp_dir, self.pp_home, self.pp_profile, ShowManager.command_callback) elif selected_show['type'] == "artmediashow": return ArtMediaShow(show_id, selected_show, self.root, show_canvas, self.showlist, self.pp_dir, self.pp_home, self.pp_profile, ShowManager.command_callback) elif selected_show['type'] == "artliveshow": return ArtLiveShow(show_id, selected_show, self.root, show_canvas, self.showlist, self.pp_dir, self.pp_home, self.pp_profile, ShowManager.command_callback) else: return None def compute_show_canvas(self,show_params): canvas={} canvas['canvas-obj']= ShowManager.canvas status,message,self.show_canvas_x1,self.show_canvas_y1,self.show_canvas_x2,self.show_canvas_y2= self.parse_show_canvas(show_params['show-canvas']) if status == 'error': # self.mon.err(self,'show canvas error: ' + message + ' in ' + show_params['show-canvas']) return 'error','show canvas error: ' + message + ' in ' + show_params['show-canvas'],canvas else: self.show_canvas_width = self.show_canvas_x2 - self.show_canvas_x1 self.show_canvas_height=self.show_canvas_y2 - self.show_canvas_y1 self.show_canvas_centre_x= self.show_canvas_width/2 self.show_canvas_centre_y= self.show_canvas_height/2 canvas['show-canvas-x1'] = self.show_canvas_x1 canvas['show-canvas-y1'] = self.show_canvas_y1 canvas['show-canvas-x2'] = self.show_canvas_x2 canvas['show-canvas-y2'] = self.show_canvas_y2 canvas['show-canvas-width'] = self.show_canvas_width canvas['show-canvas-height'] = self.show_canvas_height canvas['show-canvas-centre-x'] = self.show_canvas_centre_x canvas['show-canvas-centre-y'] = self.show_canvas_centre_y return 'normal','',canvas def parse_show_canvas(self,text): fields = text.split() # blank so show canvas is the whole screen if len(fields) < 1: return 'normal','',0,0,int(self.canvas['width']),int(self.canvas['height']) elif len(fields) in (1,4): # window is specified status,message,x1,y1,x2,y2=parse_rectangle(text) if status=='error': return 'error',message,0,0,0,0 else: return 'normal','',x1,y1,x2,y2 else: # error return 'error','Wrong number of fields in Show canvas: '+ text,0,0,0,0 from pp_menushow import MenuShow from pp_liveshow import LiveShow from pp_mediashow import MediaShow from pp_hyperlinkshow import HyperlinkShow from pp_radiobuttonshow import RadioButtonShow from pp_artliveshow import ArtLiveShow from pp_artmediashow import ArtMediaShow