'''
  pygame.FULLSCREEN  create a fullscreen display
  pygame.DOUBLEBUF   recommended for HWSURFACE or OPENGL
  pygame.HWSURFACE   hardware accelerated, only in FULLSCREEN
  pygame.OPENGL    create an opengl renderable display
  pygame.RESIZABLE   display window should be sizeable
  pygame.NOFRAME    display window will have no border or controls
'''

#pygame fullscreen
import os, pygame
from pygame.locals import *
from sys import exit
'''
pygame.display.set_mode():
  pygame.FULLSCREEN  create a fullscreen display
  pygame.DOUBLEBUF   recommended for HWSURFACE or OPENGL
  pygame.HWSURFACE   hardware accelerated, only in FULLSCREEN
  pygame.OPENGL    create an opengl renderable display
  pygame.RESIZABLE   display window should be sizeable
  pygame.NOFRAME    display window will have no border or controls
'''
__author__ = {'name' : 'Hongten',
       'mail' : 'hongtenzone@foxmail.com',
       'Version' : '1.0'}
BG_IMAGE = 'C://py//bg.png'
SCREEN_DEFAULT_SIZE = (500, 500)
pygame.init()
#create the image path
bg_path = os.path.join('data', BG_IMAGE)
if not os.path.exists(bg_path):
  print('The BackGround Image does not exist!')
screen = pygame.display.set_mode(SCREEN_DEFAULT_SIZE, 0, 32)
bg = pygame.image.load(bg_path).convert()
#full screen flag
full_screen = False
while 1:
  for event in pygame.event.get():
    if event.type == QUIT:
      exit()
    if event.type == KEYDOWN:
      #when press the 'f',then change the screen display model
      if event.key == K_f:
        full_screen = not full_screen
        if full_screen:
          print('Open the Fullscreen model!')
        else:
          print('Open the Default model!')
      if full_screen:
        #full screen display model
        screen = pygame.display.set_mode(SCREEN_DEFAULT_SIZE, FULLSCREEN, 32)
      else:
        #default model
        screen = pygame.display.set_mode(SCREEN_DEFAULT_SIZE, 0, 32)
    screen.blit(bg, (0, 0))
    pygame.display.update()