python clutter example (clickable buttons)

Example Clutter program which will load a png and create a clickable button out of it.

import clutter

#create a clutter stage and set the display size
stage = clutter.Stage()
stage.set_size(400, 400)

#load the image for the buttons
img=clutter.cogl.texture_new_from_file('button.png',clutter.cogl.TEXTURE_NO_SLICING, clutter.cogl.PIXEL_FORMAT_ANY)

#example create button from class  start

class button(clutter.Texture):
    def __init__(self,id,row=1,padding=10):
        clutter.Texture.__init__(self)
        self.row=row
        self.id=id
        self.set_size (100,100)
        self.set_position (id*100,self.row*100)
        self.set_cogl_texture(img)
        self.set_reactive(True)
        #call click method on button clicked
        self.connect("button-press-event",self.clicked)
       
    def clicked(self,stage, event):
        print "class click="+str(self.id)+" row "+str(self.row)

#example class with collection of button class
class buttons:
    def __init__(self):
        self.buttonlist=[]
        self.count=0
        for i in range(0,10):
            self.buttonlist.append(button(self.count,row=2))
            #stage.add(self.buttonlist[self.count])
            self.count+=1
   
    #iter method so we can step through all buttons in a for loop
    def __iter__(self):
        for i in self.buttonlist:
            yield i
   
    #append a new button
    def append(self,btton):
        self.buttonlist.append(self.count)
        self.count+=1

#crate instance of buttons class
#append buttons class to stage
buttonlist2=buttons()
for b in buttonlist2:
    stage.add(b)

#example of creating button with function calls end


#show everything in the stage
stage.show_all()
stage.connect("destroy",clutter.main_quit)
#main clutter loop
clutter.main()

Test Image i used if anyone needs it.