70 lines
1.7 KiB
Python
70 lines
1.7 KiB
Python
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"""
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Post-nanoemoji processing of the Noto COLRv1 Emoji file.
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For now substantially based on copying from a correct bitmap build.
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"""
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from absl import app
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from fontTools import ttLib
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def _is_colrv1(font):
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return (
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"COLR" in font
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and font["COLR"].version == 1
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)
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def _is_cbdt(font):
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return "CBDT" in font
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def _is_compat_font(font):
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return (
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"meta" in font
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and "Emji" in font["meta"].data
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)
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def _copy_emojicompat_data(colr_font, cbdt_font):
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colr_font["meta"] = cbdt_font["meta"]
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def _set_name(name_table, nameID):
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name_table.getName(value, nameID, 3, 1, 0x409)
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def _set_name(name_table, nameID, value):
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name_table.setName(value, nameID, 3, 1, 0x409)
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def _copy_names(colr_font, cbdt_font):
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colr_font["name"] = cbdt_font["name"]
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name_table = colr_font["name"]
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assert all((n.platformID, n.platEncID, n.langID) == (3, 1, 0x409)
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for n in name_table.names), "Should only have names Android uses"
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# Amendments
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_set_name(name_table, 10, "Color emoji font using COLRv1.")
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_set_name(name_table, 11, "https://github.com/googlefonts/noto-emoji")
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def main(argv):
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if len(argv) != 3:
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raise ValueError("Must have two args, a COLRv1 font and a CBDT emojicompat font")
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colr_font = ttLib.TTFont(argv[1])
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if not _is_colrv1(colr_font):
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raise ValueError("First arg must be a COLRv1 font")
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cbdt_font = ttLib.TTFont(argv[2])
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if not _is_cbdt(cbdt_font) or not _is_compat_font(cbdt_font):
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raise ValueError("Second arg must be a CBDT emojicompat font")
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_copy_emojicompat_data(colr_font, cbdt_font)
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_copy_names(colr_font, cbdt_font)
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colr_font.save('../fonts/Noto-COLRv1-noflags.ttf')
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if __name__ == "__main__":
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app.run(main)
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