radio/util/font2png.py

   1 #!/usr/bin/env python
   2 # -*- coding: utf-8 -*-
   3
   4 import sys, os
   5 import glob
   6
   7 from PIL import Image, ImageDraw, ImageFont
   8
   9 chars_en = u""" !"#$%&'()*+,-./0123456789:;<=>?°ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz~|≥"""
  10 chars_fr = u"""éèàîç"""
  11 chars_de = u"""ÄäÖöÜüß"""
  12 chars_cz = u"""ěščřžýáíéňóůúďťĚŠČŘŽÝÁÍÉŇÓÚŮĎŤ"""
  13 chars_es = u"""Ññ"""
  14 chars_fi = u"""åäöÅÄÖ"""
  15 chars_it = u"""àù"""
  16 chars_pl = u"""ąćęłńóśżźĄĆĘŁŃÓŚŻŹ"""
  17 chars_pt = u"""ÁáÂâÃãÀàÇçÉéÊêÍíÓóÔôÕõÚú"""
  18
  19 COUNT_EXTRA_CHARS = 21
  20
  21 chars_extra = u"".join([chr(1+i) for i in range(COUNT_EXTRA_CHARS)])
  22 chars = chars_en + chars_extra + chars_fr + chars_de + chars_cz + chars_es + chars_fi + chars_it + chars_pl
  23
  24
  25 def createFontBitmap(filename, fontname, fontsize, fontoffset, foreground, background, coordsfile=True):
  26
  27
  28     coords = []
  29     font_filename = 'fonts/' + fontname + '.ttf'
  30
  31     print("Font filename: %s" % font_filename)
  32     font = ImageFont.truetype(font_filename, fontsize)
  33
  34     extraImage = None
  35     extraFilename = 'fonts/extra_%dpx.png' % fontsize
  36
  37     try:
  38         extraImage = Image.open(extraFilename)
  39         extraImage = extraImage.convert('RGB');
  40
  41     except IOError:
  42         print("Missing extra symbol filename %s" % extraFilename)
  43
  44     def getCharWidth(c):
  45         if c in chars_extra:
  46             if extraImage:
  47                 # Extra characters 16px
  48                 #if fontsize == 16:
  49                 if ord(c) <= 9:
  50                     return 13
  51                 else:
  52                     return 15
  53             else:
  54                 return 0
  55         elif c == " ":
  56             return 4
  57         else:
  58             w, h = font.getsize(c)
  59             return w + 1
  60
  61     def getFontWidth():
  62         width = 0
  63         for c in chars:
  64             width += getCharWidth(c)
  65         return width
  66
  67     width = getFontWidth()
  68     image = Image.new('RGB', (width, fontsize + 4), background)
  69     draw = ImageDraw.Draw(image)
  70
  71     width = 0
  72     for c in chars:
  73         coords.append(width)
  74
  75         if c in chars_extra:
  76             if extraImage and c == chars_extra[0]:
  77                 image.paste(extraImage.copy(),(width,1))
  78         elif c == " ":
  79             pass
  80         else:
  81             w, h = font.getsize(c)
  82             draw.text((width + 1, fontoffset), c, fill=foreground, font=font)
  83
  84         width += getCharWidth(c)
  85
  86     coords.append(width)
  87
  88     image.save(filename + ".png")
  89     if coordsfile:
  90         with open(filename + ".specs", "w") as f:
  91             f.write(",".join(str(tmp) for tmp in coords))
  92
  93
  94 # Main
  95 if __name__ == "__main__":
  96     createFontBitmap(sys.argv[4], sys.argv[1], int(sys.argv[2]), int(sys.argv[3]), (0,0,0), (255,255,255))