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#!/usr/bin/python
"""Post-build web fonts changes for Roboto."""
import os
from os import path
import sys
from fontTools import ttLib
from nototools import font_data
def apply_temporary_fixes(font):
"""Apply some temporary fixes.
"""
# Fix version number from buildnumber.txt
# https://code.google.com/a/google.com/p/roboto/issues/detail?id=50
from datetime import date
build_number_txt = path.join(
path.dirname(__file__), os.pardir, 'res', 'buildnumber.txt')
build_number = open(build_number_txt).read().strip()
version_record = 'Version 2.%s; %d' % (build_number, date.today().year)
font_data.set_name_record(font, 5, version_record)
def apply_web_specific_fixes(font):
"""Apply fixes needed for web fonts."""
# Set ascent, descent, and lineGap values to Android K values
hhea = font['hhea']
hhea.ascent = 1900
hhea.descent = -500
hhea.lineGap = 0
os2 = font['OS/2']
os2.sTypoAscender = 1536
os2.sTypoDescender = -512
os2.sTypoLineGap = 102
os2.usWinAscent = 1946
os2.usWinDescent = 512
family_name = 'RobotoDraft'
subfamily_name = font_data.get_name_records(font)[2].encode('ASCII')
assert(subfamily_name in
['Thin', 'Thin Italic',
'Light', 'Light Italic',
'Regular', 'Italic',
'Medium', 'Medium Italic',
'Bold', 'Bold Italic',
'Black', 'Black Italic'])
full_name = family_name + ' ' + subfamily_name
year = '2014'
# Copyright message
font_data.set_name_record(
font, 0, 'Copyright %s Google Inc. All Rights Reserved.' % year)
# Family name
font_data.set_name_record(font, 1, family_name)
font_data.set_name_record(font, 16, family_name)
# Unique identifier and full name
font_data.set_name_record(font, 3, full_name)
font_data.set_name_record(font, 4, full_name)
font_data.set_name_record(font, 18, None)
# PostScript name
font_data.set_name_record(
font, 6, family_name+'-'+subfamily_name.replace(' ', ''))
def correct_font(source_font_name, target_font_name):
"""Corrects metrics and other meta information."""
font = ttLib.TTFont(source_font_name)
apply_temporary_fixes(font)
apply_web_specific_fixes(font)
font.save(target_font_name)
def main(argv):
"""Correct the font specified in the command line."""
correct_font(argv[1], argv[2])
if __name__ == "__main__":
main(sys.argv)
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