Convert Text to an Image with an 8x8 pixel font

text_to_image.py

#!/usr/bin/python
#
# First make sure you have the font saved: https://github.com/trillek-team/trillek-vcomputer-module/blob/master/assets/EC1271-8x8.png

from PIL import Image

font_file = "./font-8x8.png"
font_img = Image.open(font_file)

# map from character to zero-indexed (x,y) index.
glyphs = {
	'!' : (1, 2),
	'#' : (3, 2),
	'$' : (4, 2),
	'%' : (5, 2),
	'&' : (6, 2),
	'(' : (8, 2),
	')' : (9, 2),
	'*' : (10, 2),
	'+' : (11, 2),
	',' : (12, 2),
	'-' : (13, 2),
	'.' : (14, 2),
	'/' : (15, 2),
	'0' : (0, 3),
	'1' : (1, 3),
	'2' : (2, 3),
	'3' : (3, 3),
	'4' : (4, 3),
	'5' : (5, 3),
	'6' : (6, 3),
	'7' : (7, 3),
	'8' : (8, 3),
	'9' : (9, 3),
	':' : (10, 3),
	';' : (11, 3),
	'<' : (12, 3),
	'=' : (13, 3),
	'>' : (14, 3),
	'?' : (15, 3),
	'@' : (0, 4),
	'A' : (1, 4),
	'B' : (2, 4),
	'C' : (3, 4),
	'D' : (4, 4),
	'E' : (5, 4),
	'F' : (6, 4),
	'G' : (7, 4),
	'H' : (8, 4),
	'I' : (9, 4),
	'J' : (10, 4),
	'K' : (11, 4),
	'L' : (12, 4),
	'M' : (13, 4),
	'N' : (14, 4),
	'O' : (15, 4),
	'P' : (0, 5),
	'Q' : (1, 5),
	'R' : (2, 5),
	'S' : (3, 5),
	'T' : (4, 5),
	'U' : (5, 5),
	'V' : (6, 5),
	'W' : (7, 5),
	'X' : (8, 5),
	'Y' : (9, 5),
	'Z' : (10, 5),
	'[' : (11, 5),
	'\\' : (12, 5),
	']' : (13, 5),
	'^' : (14, 5),
	'_' : (15, 5),
	'`' : (0, 6),
	'a' : (1, 6),
	'b' : (2, 6),
	'c' : (3, 6),
	'd' : (4, 6),
	'e' : (5, 6),
	'f' : (6, 6),
	'g' : (7, 6),
	'h' : (8, 6),
	'i' : (9, 6),
	'j' : (10, 6),
	'k' : (11, 6),
	'l' : (12, 6),
	'm' : (13, 6),
	'n' : (14, 6),
	'o' : (15, 6),
	'p' : (0, 7),
	'q' : (1, 7),
	'r' : (2, 7),
	's' : (3, 7),
	't' : (4, 7),
	'u' : (5, 7),
	'v' : (6, 7),
	'w' : (7, 7),
	'x' : (8, 7),
	'y' : (9, 7),
	'z' : (10, 7),
	'{' : (11, 7),
	'|' : (12, 7),
	'}' : (13, 7),
	'~' : (14, 7),
	' ' : (15, 7),
}

def bbox(row, col):
	# 8x8 glyphs
	# left, top, right, bottom
	return (col*8, row*8, (col+1)*8, (row+1)*8)

def crop_glyph(ch):
	if ch in glyphs:
		x, y = glyphs[ch]
		return font_img.crop(bbox(y, x))
	else:
		return crop_glyph(' ') # default to space

def create_img(text):
	# create destination image
	lines = text.split('\n')
	width = max(len(l) for l in lines)
	dest = Image.new("RGB", (width*8, len(lines)*8), "white")
	# iterate over text
	x = 0 # current 'cursor'
	y = 0 # position
	for ch in text:
		if ch == '\n':
			x = 0
			y += 1
			continue
		if ch in glyphs:
			glyph_img = crop_glyph(ch)
			dest.paste(glyph_img, bbox(y, x))
		x += 1
	dest.save("result.png")
	dest.show()

if __name__ == '__main__':
	from sys import argv
	if len(argv) > 1:
		full_input = ' '.join(argv[1:])
		create_img(full_input.decode("string_escape"))