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#!/usr/bin/python
#
# Copyright 2015 Google Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Post-build web fonts changes for Roboto."""
import sys
from fontTools import ttLib
from nototools import font_data
import temporary_touchups
def apply_web_specific_fixes(font, family_name):
"""Apply fixes needed for web fonts."""
# Set OS/2 table values to old values
os2 = font['OS/2']
os2.sTypoAscender = 1536
os2.sTypoDescender = -512
os2.sTypoLineGap = 102
os2.usWinAscent = 1946
os2.usWinDescent = 512
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'])
if 'Condensed' in font_data.get_name_records(font)[1]:
family_name += ' Condensed'
full_name = family_name + ' ' + subfamily_name
# macStyle
bold = subfamily_name.startswith(('Bold', 'Black'))
italic = subfamily_name.endswith('Italic')
macStyle = (italic << 1) | bold
font['head'].macStyle = macStyle
# Family, subfamily names
font_data.set_name_record(font, 16, family_name)
style_map = ['Regular', 'Bold', 'Italic', 'Bold Italic']
if subfamily_name in style_map:
font_data.set_name_record(font, 1, family_name)
else:
weight = subfamily_name.split()[0]
font_data.set_name_record(font, 1, '%s %s' % (family_name, weight))
font_data.set_name_record(font, 2, style_map[macStyle])
# 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, family_name):
"""Corrects metrics and other meta information."""
font = ttLib.TTFont(source_font_name)
temporary_touchups.apply_temporary_fixes(font)
apply_web_specific_fixes(font, family_name)
font.save(target_font_name)
def main(argv):
"""Correct the font specified in the command line."""
correct_font(argv[1], argv[2], argv[3])
if __name__ == "__main__":
main(sys.argv)
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