from PIL import Image

EMOJI_WIDTH, EMOJI_HEIGHT = 32, 32
EMOJI_ARRAY_WIDTH, EMOJI_ARRAY_HEIGHT = 7, 7

TOT_PIX_WIDTH = EMOJI_WIDTH * EMOJI_ARRAY_WIDTH
TOT_PIX_HEIGHT = EMOJI_HEIGHT * EMOJI_ARRAY_HEIGHT

# Load in the image
im = Image.open('reddot.png')

# Downsample it to EMOJI_WIDTH * EMOJI_ARRAY_WIDTH
im = im.resize(size=(TOT_PIX_WIDTH, TOT_PIX_HEIGHT))

# Now split it up
imgwidth, imgheight = im.size

sliced = []

for i in range(imgheight//EMOJI_WIDTH):
    print('')
    for j in range(imgwidth//EMOJI_WIDTH):

        box = (j*EMOJI_WIDTH, i*EMOJI_WIDTH, (j+1)*EMOJI_WIDTH, (i+1)*EMOJI_WIDTH)

        _im = Image.new('RGBA', (EMOJI_WIDTH, EMOJI_WIDTH), 255)
        _im.paste(im.crop(box))
        _im.save(f'chunk_{j + i*EMOJI_ARRAY_WIDTH}.png')

        print(f':chunk_{j + i*EMOJI_ARRAY_WIDTH}:', end='')