from tkinter import *       

#controlling class for the grid

class Grid:              
    def __init__(self,myParent,x,y):
        self.myParent = myParent
        self.cell = [[None for j in range(x)] for i in range(y)]
        self.color_prevButton="red" 
        
        #make a canvas to hold the cells
        self.cnvs_cell_holder = Canvas(self.myParent, bg = "white",width=600,\
                                       height=400,scrollregion=(0,0,1200,800))
                                       
        #packs the canvas into the parent frame                                
        self.cnvs_cell_holder.pack(side = BOTTOM, fill = BOTH,\
                                    expand = YES)
        #self.cnvs_cell_holder.grid(row=x, column=y, sticky=N+S+E+W)
        self.createCells(x,y)

        
    #creates a grid of buttons with the give dimensions
    def createCells(self, x, y):
        i = 0
        while(i < x):
            j = 0
            while(j < y):
                self.btn_base = Button(self.cnvs_cell_holder,\
                                       bg= "white",\
                                       activebackground = "black")
                self.cell[i][j]=(self.btn_base)
                self.btn_base.grid(column=i,row=j)
                def handler(event, i=i, j=j):
                    return self.btn_GridClick(event, i, j)
                self.btn_base.bind(sequence="<ButtonRelease-1>",\
                                       func=handler)
                j += 1
            i += 1

    #handler for buttons in the grid
    def btn_GridClick(self, event, i, j):
            event.widget.configure(bg=self.color_prevButton)
            print("i="+str(i)+",j="+str(j))
            #self.localWorld.setCreature(i,j,self.color_prevButton)
            
    #builds horizontal and vertical scrollbars
    def buildScrollBars(self, x,y):
        self.frame.grid_rowconfigure(0, weight=1)
        self.frame.grid_columnconfigure(0, weight=1)
        
        
        self.scr_barY.grid(row=0, column=1, sticky=N+S,)
        
        
        self.scr_barX.grid(row=1, column=0, sticky=E+W )
           
        self.cnvs_cell_holder.grid(row=x, column=y, sticky=N+S+E+W)
        self.scr_barX.config(command=self.cnvs_cell_holder.xview)
        self.scr_barY.config(command=self.cnvs_cell_holder.yview)
        self.frame.pack()

            
root=Tk()
app = Grid(root,10,10)                    
root.mainloop()