from Tkinter import *
from math import sqrt, ceil
from tools import Painter
class App():
    def repaint(self, handler):

        #get a count of blocks in area
        width=(handler.width-10)/10
        height=(handler.height-10)/10

        #clear a canvas by tag
        self.canvas.delete('block')
        self.canvas.delete('line')

        #debug info
        self.canvas.create_line(0, 0, handler.width, handler.height, tag='line')
        self.canvas.create_line(handler.width, 0, 0, handler.height, tag='line')

        #important notice: using a round function not a +1
        a=min( round((width-1)/sqrt(3)), (height-1)/2)
        print a, width, height, 'Resize!'

        #only even are interesting for me
        if a%2==1:
            a-=1

        # too small ='(
        if(a<6):
            return

        self.hexPainter.drawHexagon(a, width, height)


    def __init__(self, root):
        'Constructor. It creates a child widgets of root and binds a resize event'
        self.canvas=Canvas(root)
        a=6
        width=round( sqrt(3)*a +1)
        height=a*2 + 1
        self.canvas.configure({"bg":'white', "width": width*11, "height": height*11})
        self.canvas.pack(fill="both", expand=True)
        self.hexPainter=Painter(self.canvas, 10)
        self.canvas.bind('<Configure>', self.repaint)
        self.hexPainter.drawHexagon(a, width, height)



#main program. Creates a root widget, class instance and runs a mainloop
root=Tk()
root.title("First Lab")
app=App(root)

root.mainloop()