from tkinter import *       

class Application(Frame):              
    def __init__(self, master=None):
        Frame.__init__(self, master)
        self.cell = []   
        self.pack()
        self.buildscrbars()
        self.cnvs_cell_holder = Canvas(bg = "white", xscrollcommand = self.scr_barX,
        yscrollcommand = self.scr_barY)
        self.cnvs_cell_holder.pack(side = BOTTOM, fill = BOTH, expand = YES)
        self.width = 0                   
        self.createCells([[1,2,1],[2,1,2]])
        self.attachscrbars() 

    def createCells(self, array = []):
        '''Preconditions: Array is a list of lists, all of which
        have at least 1 element, no list has a non-integer element'''
        '''Creates a grid of colored buttons based on array'''
        x = 0
        while x < len(array):
            y = 0
            while y < len(array[x]):
                bkgd = self.colorCell(array[x][y])
                self.btn_base = Button(self.cnvs_cell_holder, text=array[x][y], bg= bkgd,
                activebackground = bkgd)
                self.cell.append(self.btn_base)
                self.btn_base.grid(column = x, row = y)
                y += 1
            x += 1
        self.width = x
        
    def colorCell(self, definer = 0):
        '''This will be defined by each creature as a get_color function'''
        if definer == 0:
            return "black"
        elif definer == 1:
            return "blue"
        elif definer == 2:
            return "green"
        else:
            return "red"
    def buildscrbars(self):
        self.scr_barY = Scrollbar(self, orient=VERTICAL)
        self.scr_barX = Scrollbar(self, orient=HORIZONTAL)
    def attachscrbars(self):
        self.scr_barY.pack(side=TOP, fill = Y, expand = YES)
        self.scr_barX.pack(side=TOP, fill = X, expand = YES)


app = Application()                    
app.master.title("Sample application") 
app.mainloop()