other/adjust_vertical_metrics.py

#!/usr/bin/python
#
# Copyright 2016 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.

"""Adjust the vertical metrics of the fonts for Android."""

import glob
from fontTools import ttLib

def main():
    """Change the ascent and descent of Noto Serif fonts."""
    for font_file in glob.glob('NotoSerif-*.ttf'):
        font = ttLib.TTFont(font_file)
        font['hhea'].ascent = 1900
        font['hhea'].descent = -500
        font.save('touched/'+font_file)

if __name__ == '__main__':
    main()