#!python
# -*- mode: python; Encoding: utf-8; coding: utf-8 -*-
# Last updated: <2023/10/30 06:07:21 +0900>
"""
Load font image and padding.

Usage : fontpadding.py INFILE OUTFILE PADDINGX PADDINGY

Windows10 x64 22H2 + Python 3.10.10 64bit
"""

import sys
from PIL import Image


def main():
    if len(sys.argv) != 5:
        print("Usage : fontpadding.py INFILE OUTFILE PADDINGX PADDINGY")
        sys.exit()

    infile = sys.argv[1]
    outfile = sys.argv[2]
    padx = int(sys.argv[3])
    pady = int(sys.argv[4])
    print(f"infile  : {infile}")
    print(f"outfile : {outfile}")
    print(f"padding : {padx}, {pady}")

    im = Image.open(infile).convert("RGB")
    iw, ih = im.size
    print(im.format, iw, ih, im.mode)

    fw = iw / 16
    fh = ih / 16
    dw = iw + 16 * padx
    dh = ih + 16 * pady

    nim = Image.new("RGB", (dw, dh))

    buf = []
    for y in range(16):
        for x in range(16):
            x0 = x * fw
            y0 = y * fh
            im2 = im.crop((x0, y0, x0 + fw, y0 + fh))

            tx = int(x * (fw + padx) + (padx / 2))
            ty = int(y * (fh + pady) + (pady / 2))
            nim.paste(im2, (tx, ty))

    nim.save(outfile)


if __name__ == '__main__':
    main()