# Tk_30x30_clickable.py

# Tk_30x30_clickable.py -- demo

from Tkinter import *
import random

w,h=30,30
root = Tk()

canvas = Canvas(root, width = w*20+20, height = h*20+20)
canvas.pack()

cells = []
for i in range (30):
    '''
    row = []
    for j in range (30):
        row.append(random.choice(['white','black']))
    cells.append(row)
    '''
    colors=['white','black']*15 # req?
    random.shuffle(colors)
    cells.append(colors)

def CellMark(mode,event):
    j = (event.x-10) // 20
    i = (event.y-10) // 20
    cells[i][j] = mode
    DrawCells ()
    canvas.update()

def CellClick1(event):
    CellMark('black',event)

def CellClick2(event):
    CellMark('white',event)

def DrawCells():
    canvas.delete('cell')
    for i in range(30):
        for j in range(30):
            canvas.create_rectangle(10 + j*20, 10 + i*20, 10 + (j+1)*20, 10 +(i+1)*20, fill = cells[i][j], outline = "black", tag= 'cell')

canvas.tag_bind('cell', "<Button-1>", CellClick1)
canvas.tag_bind('cell', "<Button-3>", CellClick2)


DrawCells()

root.mainloop()