Source Code for Module teamwork.widgets.player

 1  from Tkinter import * 
 2  import Pmw 
 3  from images import getImage 
 4   
 5 -class PlayerControl(Pmw.ButtonBox): 
 6      """A ButtonBox subclass for a colleciton of media player buttons""" 
 7   
 8 -    def __init__(self, parent=None, **kw): 
 9          """Accepts all the standard ButtonBox options""" 
10          optiondefs = () 
11          self.defineoptions(kw,optiondefs) 
12          Pmw.ButtonBox.__init__(self,parent=parent) 
13          self.initialiseoptions(PlayerControl) 
14          self.images = {} 
15          self.state = {} 
16   
17 -    def add(self,name,**kw): 
18          """Adds a button of the given name and corresponding image""" 
19          button = Pmw.ButtonBox.add(self,name,**kw) 
20          self.addImage(name,name) 
21          self.state[name] = 0 
22          self.drawImage(name) 
23          return button 
24   
25 -    def delete(self,index): 
26          """Deletes the corresponding button (name-type index preferred""" 
27          Pmw.ButtonBox.delete(self,index) 
28          try: 
29              del self.images[index] 
30              del self.state[index] 
31          except KeyError: 
32              # Hmm, maybe there's a better way 
33              pass 
34   
35 -    def getImage(self,name): 
36          """Utility method to get the image widget of the named button""" 
37          try: 
38              image = PhotoImage(file=getImage('media-%s.gif' % (name))) 
39          except: 
40              image = None 
41          return image 
42   
43 -    def addImage(self,name,image): 
44          """Adds the named image to the named button's toggle sequence""" 
45          pic = self.getImage(image) 
46          if pic: 
47              try: 
48                  self.images[name].append(pic) 
49              except KeyError: 
50                  self.images[name] = [pic] 
51   
52 -    def drawImage(self,name): 
53          """Utility image that sets named button's label to be its 
54          currently relevant image""" 
55          button = self.component(name) 
56          try: 
57              button.configure(image=self.images[name][self.state[name]]) 
58          except KeyError: 
59              button.configure(text=name) 
60           
61 -    def toggle(self,name): 
62          """Advances the named button in its image sequence""" 
63          self.state[name] = (self.state[name]+1) % len(self.images[name]) 
64          self.drawImage(name) 
65           
66  if __name__ == '__main__': 
67      root = Tk() 
68      Pmw.initialise(root) 
69      control = PlayerControl(root,orient=HORIZONTAL) 
70      control.pack(side=TOP,fill=X,expand=1) 
71      control.add('prev') 
72      button = control.add('play') 
73      button.configure(command=lambda c=control:c.toggle('play')) 
74      control.addImage('play','pause') 
75      control.add('next') 
76      # Test adding a button with a missing image 
77      control.add('hello') 
78      try: 
79          root.mainloop() 
80      except KeyboardInterrupt: 
81          root.destroy() 
82