import tkinter as tk

import go


## Handles and presents the game state as detected by the program.
class BoardView(tk.Canvas):
	def __init__(self, master=None):
		tk.Canvas.__init__(self, master)
		self.configure(width=360,height=360,background="#ffcc00")

		self.drawGrid()

		self.grid()

	def redrawState(self,gameState):
		# !! will need to remove old stones or redraw the widget completely
		for r,row in enumerate(gameState):
			for c,point in enumerate(row):
				self.drawStone(r,c,point)

		self.grid()

	def drawGrid(self):
		for i in range(19):
			self.create_line(18,18*(i+1),360-18,18*(i+1),fill="#000000") # rows
			self.create_line(18*(i+1),18,18*(i+1),360-18,fill="#000000") # cols

		self.drawStars()

	def drawStars(self):
		for r in range(4,19,6):
			for c in range(4,19,6):
				self.create_oval(r*18-2,c*18-2,r*18+2,c*18+2,fill='#000000')

	## Draws a stone at provided coordinates.
	#
	#  For an unknown color draws nothing and returns False.
	#
	#  @param r row coordinate, [0-18], counted from top
	#  @param c column coordinate, [0-18], counted from left
	#  @param color color indicator, go.BLACK or go.WHITE
	def drawStone(self,r,c,color):
		if color==go.BLACK: hexCode='#000000'
		elif color==go.WHITE: hexCode='#ffffff'
		else: return False
		r+=1
		c+=1
		self.create_oval(c*18-9,r*18-9,c*18+9,r*18+9,fill=hexCode)