from Tkinter import*
import tkMessageBox
import Tkinter
from PIL import Image
import tkFileDialog

fen1 = Tkinter.Tk()



def ImageSauvegardee() :
    tkMessageBox.showinfo("Information", "image Sauvegarde")

def nuanceGris() :
    nomImage=tkFileDialog.askopenfilename()
    image=Image.open(nomImage)
    l,h=image.size
    for x in range(l):
        for y in range(h):
            p=image.getpixel((x,y))
            g=(p[0]+p[1]+p[2])/3
            image.putpixel((x,y),(g,g,g))
    image.save("2.gif", "GIF")
    ImageSauvegardee()

def apercu() :
    photo = PhotoImage(file ='2.gif')
    item = can1.create_image(200,200, image =photo)
    can1.pack()
    fen1.mainloop()

  
can1 = Canvas(fen1,width =500,height =500, bg ='white')
can1.pack(side = BOTTOM, padx =3, pady =3)
bou4 =Button(fen1, text= 'gris', command= nuanceGris)
bou4.pack(side =LEFT, padx =3, pady =3)
bou5 =Button(fen1, text= 'Apercu', command= apercu)
bou5.pack(side =TOP, padx =3, pady =3)

fen1.mainloop()