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