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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 changes for Roboto for Android."""
import sys
from fontTools import ttLib
from nototools import font_data
import temporary_touchups
def apply_android_specific_fixes(font):
"""Apply fixes needed for Android."""
# Remove combining keycap and the arrows from the cmap table:
# https://github.com/google/roboto/issues/99
font_data.delete_from_cmap(font, [
0x20E3, # COMBINING ENCLOSING KEYCAP
0x2191, # UPWARDS ARROW
0x2193, # DOWNWARDS ARROW
])
# Drop tables not useful on Android
for table in ['LTSH', 'hdmx', 'VDMX', 'gasp']:
if table in font:
del font[table]
# turn off round-to-grid flags in certain problem components
# https://github.com/google/roboto/issues/153
glyph_set = font.getGlyphSet()
ellipsis = glyph_set['ellipsis']._glyph
for component in ellipsis.components:
component.flags &= ~(1 << 2)
def correct_font(source_font_name, target_font_name):
"""Corrects metrics and other meta information."""
font = ttLib.TTFont(source_font_name)
temporary_touchups.apply_temporary_fixes(font)
temporary_touchups.update_version_and_revision(font)
apply_android_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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