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MarlinFirmware/buildroot/share/fonts/buildhzk.py

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# Generate a 'HZK' font file for the T5UIC1 DWIN LCD
# from multiple bdf font files.
# Note: the 16x16 glyphs are not produced
# Author: Taylor Talkington
# License: GPL
import bdflib.reader
import math
def glyph_bits(size_x, size_y, font, glyph_ord):
asc = font[b'FONT_ASCENT']
desc = font[b'FONT_DESCENT']
bits = [0 for y in range(size_y)]
glyph_bytes = math.ceil(size_x / 8)
try:
glyph = font[glyph_ord]
for y, row in enumerate(glyph.data):
v = row
rpad = size_x - glyph.bbW
if rpad < 0: rpad = 0
if glyph.bbW > size_x: v = v >> (glyph.bbW - size_x) # some glyphs are actually too wide to fit!
v = v << (glyph_bytes * 8) - size_x + rpad
v = v >> glyph.bbX
bits[y + desc + glyph.bbY] |= v
except KeyError:
pass
bits.reverse()
return bits
def marlin_font_hzk():
fonts = [
[6,12,'marlin-6x12-3.bdf'],
[8,16,'marlin-8x16.bdf'],
[10,20,'marlin-10x20.bdf'],
[12,24,'marlin-12x24.bdf'],
[14,28,'marlin-14x28.bdf'],
[16,32,'marlin-16x32.bdf'],
[20,40,'marlin-20x40.bdf'],
[24,48,'marlin-24x48.bdf'],
[28,56,'marlin-28x56.bdf'],
[32,64,'marlin-32x64.bdf']
]
with open('marlin_fixed.hzk','wb') as output:
for f in fonts:
with open(f[2], 'rb') as file:
print(f'{f[0]}x{f[1]}')
font = bdflib.reader.read_bdf(file)
for glyph in range(128):
bits = glyph_bits(f[0], f[1], font, glyph)
glyph_bytes = math.ceil(f[0]/8)
for b in bits:
try:
z = b.to_bytes(glyph_bytes, 'big')
output.write(z)
except OverflowError:
print('Overflow')
print(f'{glyph}')
print(font[glyph])
for b in bits: print(f'{b:0{f[0]}b}')
return