pytext2image.py

#!/usr/bin/env python

# Freetype python binding : https://freetype-py.readthedocs.io/en/latest/index.html
# 텍스트를 렌더링해서 이미지로 만들어주는 스크립트 코드입니다.
# This example code is to renders text to image.

from PIL import Image
import freetype

WIDTH, HEIGHT = 1280, 400
image = Image.new('L', (WIDTH,HEIGHT))

def main():
    global freetype
    global image

    fontfilename= 'NanumSquareR.ttf'
    outfilename = 'text.png'
    text = 'Hello, world! 안녕.'
    fontSize = 20 # pt

    num_chars = len(text)
    dpi = 96 # default dpi is 96 on Windows

    face = freetype.Face(fontfilename)
    face.set_char_size(0, fontSize*64, dpi, dpi)

    # text cursor location
    px = 0
    py = 0

    for n in range(num_chars):
        charcode = ord(text[n])

        face.load_char(charcode)
        slot = face.glyph
        fontHeight = face.size.height / 64
        ftbitmap = slot.bitmap

        for by in range(0, ftbitmap.rows):
            for bx in range(0, ftbitmap.width):
                ix = int(px + slot.bitmap_left + bx)
                iy = int(py + (fontHeight - slot.bitmap_top) + by)

                # pixel out-of-range check (a very simple, inefficient)
                if ix < image.width and iy < image.height:
                    location = (ix,iy)
                    pixel = image.getpixel(location)
                    pixel |= int(ftbitmap.buffer[by*ftbitmap.pitch + bx])
                    image.putpixel(location, pixel)

        # increment pen position
        px += (slot.advance.x/64)
        py += (slot.advance.y/64)

    del face
    del freetype

    image.save(outfilename)
    del image

if __name__ == '__main__':
    main()