# Modules ---------------------------------------------------------------
from tkinter import Tk , Canvas , Label , Text , Button
from PIL import Image, ImageTk   # pip install pillow
from random import randint

# Fonctions ---------------------------------------------------------------
def creer_fenetre() :
    fenetre = Tk()
    fenetre.title("tp11")
    return fenetre

def creer_widgets() :
    zone_graphique = Canvas(fenetre, width=1000, height=600 , bg = 'black')
    zone_graphique.grid(row = 0 , column = 0 , columnspan = 3 )

    mon_texte = Label(fenetre, text = "Entre un mot : ")
    mon_texte.grid(row = 1 , column = 0)

    champ_saisie = Text(fenetre , height = 1 , width = 14)
    champ_saisie.grid(row = 1 , column = 1)

    bouton_valider = Button(fenetre, text = "Valider" , width = 12 , command = debut)
    bouton_valider.grid(row = 1, column = 2)

    return zone_graphique, mon_texte, champ_saisie, bouton_valider


def creation_dictionnaire_pic():
    i = 0
    for c in "abcdefghijklmnopqrstuvwxyz " :
        fichier = "l_"+str(i)+".png"
        i = i + 1
        pic[c] = ImageTk.PhotoImage(Image.open(fichier) , master = fenetre)


def debut():
    global n
    mot = champ_saisie.get("1.0", "end-1c")
    if n < 6 :
        i = 0
        for lettre in mot :
            num = zone_graphique.create_image(100 + 80*i, 10 + 100*n ,anchor = "nw",image = pic[lettre])
            picsDansCanvas.append(num)
            i = i + 1
    n = n + 1

def efface_image(event):
    if (picsDansCanvas != []) :
        # on n'affiche plus la dernière image de picsDansCanvas[] dans le canvasZ
        num = picsDansCanvas[-1]
        zone_graphique.delete(num)
        # on supprime cette image de la liste picsDansCanvas[]
        del(picsDansCanvas[-1])

def efface_tout(event):
    global n
    for i in range(len(picsDansCanvas)) :
        num = picsDansCanvas[i]
        zone_graphique.delete(num)
    del(picsDansCanvas[:])
    n = 0




# Main ---------------------------------------------------------------
pic = {}
picsDansCanvas = []
n = 0

fenetre = creer_fenetre()
zone_graphique,mon_texte,champ_saisie,bouton_valider = creer_widgets()

creation_dictionnaire_pic()

fenetre.bind("<Down>",efface_image)
fenetre.bind("<Up>",efface_tout)


fenetre.mainloop()