scalable_invaders.py

from Tkinter import *
from invaders import *

class App(object):
  def __init__(self):
    self.root = Tk()
    self.root.title("Scalable Graphics Test")
    self.root.minsize(144, 8)
    self.root.aspect(144, 8, 144, 8)
    self.cv = Canvas(self.root, width=576, height=32, bg="white", highlightthickness=0)
    self.cv.pack(expand=True, fill=BOTH)
    self.quantity = 12

    self.root.bind("<Configure>", self.redraw)
    self.root.bind("q", lambda e: e.widget.quit())
    self.root.mainloop()

  def draw_invader(self, x, y, width, height):
    for coord in Invaders.front_invader:
      cx = x + coord[1] * width
      cy = y + coord[0] * height
      self.cv.create_rectangle(cx, cy, cx + width, cy + height, fill="#8888ff", width="0")
      self.cv.pack()

  def redraw(self, event):
    self.cv.delete(ALL)
    w, h = event.width, event.height
    slot_width  = w / self.quantity
    slot_height = h
    invader_width  = floor(slot_width / 12)
    invader_height = floor(slot_height / 8)
    for i in range(0, self.quantity):
      x = i * slot_width
      self.draw_invader(x, 0, invader_width, invader_height)

App()