fonts: Rewrite font merging script based on fonttools.
The current script based on fontforge seems to have a few problems. The generated fonts show glitches, for example in Cyberpunk 2077 for Thai and in FIFA 22 for Arabic. I don't precisely know what is the problem, and it might be that the real bug is in the rendering code rather than in the merging script. But since this seems to work better overall, I'm sticking with it. CW-Bug-Id: #20302
This commit is contained in:
Giovanni Mascellani
Arkadiusz Hiler
parent
62174c7c1e
commit
8e9e6da034
3 changed files with 254 additions and 33 deletions
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@ -818,17 +818,17 @@ $(simsun.ttc): $(simsun.ttf) $(nsimsun.ttf)
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$(msgothic.ttc): $(msgothic.ttf) $(mspgothic.ttf) $(msuigothic.ttf)
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afdko otf2otc -o $@ $^
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$(micross.ttf): $(noto_sans.ttf) $(noto_sans_arabic.ttf) $(noto_sans_armenian.ttf) $(noto_sans_bengali.ttf) $(noto_sans_coptic.ttf) \
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$(micross.ttf): $(FONTS)/scripts/merge.py $(noto_sans.ttf) $(noto_sans_arabic.ttf) $(noto_sans_armenian.ttf) $(noto_sans_bengali.ttf) $(noto_sans_coptic.ttf) \
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$(noto_sans_georgian.ttf) $(noto_sans_gujarati.ttf) $(noto_sans_hebrew.ttf) $(noto_sans_khmer.ttf) $(noto_sans_tamil.ttf) \
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$(noto_sans_thaana.ttf) $(noto_sans_thai.ttf)
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$(FONTFORGE) -script $(MERGEFONTSSCRIPT) $(noto_sans.ttf) $(noto_sans_arabic.ttf) $(noto_sans_armenian.ttf) $(noto_sans_bengali.ttf) \
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$(FONTS)/scripts/merge.py $(noto_sans.ttf) $(noto_sans_arabic.ttf) $(noto_sans_armenian.ttf) $(noto_sans_bengali.ttf) \
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$(noto_sans_coptic.ttf) $(noto_sans_georgian.ttf) $(noto_sans_gujarati.ttf) $(noto_sans_hebrew.ttf) $(noto_sans_khmer.ttf) \
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$(noto_sans_tamil.ttf) $(noto_sans_thaana.ttf) $(noto_sans_thai.ttf) "MicrosoftSansSerif" "Microsoft Sans Serif" "Regular" $(micross.ttf)
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$(nirmala.ttf): $(noto_sans.ttf) $(noto_sans_bengaliui.ttf) $(noto_sans_devanagariui.ttf) $(noto_sans_gujaratiui.ttf) $(noto_sans_gurmukhiui.ttf) \
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$(nirmala.ttf): $(FONTS)/scripts/merge.py $(noto_sans.ttf) $(noto_sans_bengaliui.ttf) $(noto_sans_devanagariui.ttf) $(noto_sans_gujaratiui.ttf) $(noto_sans_gurmukhiui.ttf) \
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$(noto_sans_kannadaui.ttf) $(noto_sans_malayalamui.ttf) $(noto_sans_meeteimayek.ttf) $(noto_sans_olchiki.ttf) $(noto_sans_oriyaui.ttf) \
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$(noto_sans_sinhalaui.ttf) $(noto_sans_sorasompeng.ttf) $(noto_sans_tamilui.ttf) $(noto_sans_teluguui.ttf)
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$(FONTFORGE) -script $(MERGEFONTSSCRIPT) $(noto_sans.ttf) $(noto_sans_bengaliui.ttf) $(noto_sans_devanagariui.ttf) $(noto_sans_gujaratiui.ttf) \
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$(FONTS)/scripts/merge.py $(noto_sans.ttf) $(noto_sans_bengaliui.ttf) $(noto_sans_devanagariui.ttf) $(noto_sans_gujaratiui.ttf) \
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$(noto_sans_gurmukhiui.ttf) $(noto_sans_kannadaui.ttf) $(noto_sans_malayalamui.ttf) $(noto_sans_meeteimayek.ttf) $(noto_sans_olchiki.ttf) \
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$(noto_sans_oriyaui.ttf) $(noto_sans_sinhalaui.ttf) $(noto_sans_sorasompeng.ttf) $(noto_sans_tamilui.ttf) $(noto_sans_teluguui.ttf) \
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"NirmalaUI" "Nirmala UI" "Regular" $(nirmala.ttf)
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250
fonts/scripts/merge.py
Executable file
250
fonts/scripts/merge.py
Executable file
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@ -0,0 +1,250 @@
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#!/usr/bin/env python3
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# Based on merge_noto.py and merge_fonts.py from the nototools
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# (https://github.com/googlefonts/nototools), with the following
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# copyright notice:
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# Copyright 2014-2017 Google Inc. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# The font name changing logic is taken from
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# https://github.com/chrissimpkins/fontname.py/blob/master/fontname.py,
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# with the following copyright notice:
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# Copyright 2019 Christopher Simpkins
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# MIT License
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"""Merges a number of Noto fonts and then sets a given name to the
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result.
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"""
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import sys
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import tempfile
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import os
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from fontTools import merge
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from fontTools import ttLib
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from fontTools.ttLib.tables import otTables
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def read_line_metrics(font):
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metrics = {
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"ascent": font["hhea"].ascent,
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"descent": font["hhea"].descent,
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"usWinAscent": font["OS/2"].usWinAscent,
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"usWinDescent": font["OS/2"].usWinDescent,
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"sTypoAscender": font["OS/2"].sTypoAscender,
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"sTypoDescender": font["OS/2"].sTypoDescender,
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"sxHeight": font["OS/2"].sxHeight,
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"sCapHeight": font["OS/2"].sCapHeight,
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"sTypoLineGap": font["OS/2"].sTypoLineGap,
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}
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return metrics
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def set_line_metrics(font, metrics):
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font["hhea"].ascent = metrics["ascent"]
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font["hhea"].descent = metrics["descent"]
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font["OS/2"].usWinAscent = metrics["usWinAscent"]
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font["OS/2"].usWinDescent = metrics["usWinDescent"]
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font["OS/2"].sTypoAscender = metrics["sTypoAscender"]
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font["OS/2"].sTypoDescender = metrics["sTypoDescender"]
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font["OS/2"].sxHeight = metrics["sxHeight"]
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font["OS/2"].sCapHeight = metrics["sCapHeight"]
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font["OS/2"].sTypoLineGap = metrics["sTypoLineGap"]
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def has_gsub_table(fontfile):
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font = ttLib.TTFont(fontfile)
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return "GSUB" in font
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SCRIPT_TO_OPENTYPE_SCRIPT_TAG = {
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# Retrieved from Opentype 1.9 delta specs. Prerelease scripttags used out of necessity. https://docs.microsoft.com/en-us/typography/opentype/spec/scripttags
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"Carian": "cari",
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"CypriotSyllabary": "cprt",
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"CyproMinoan": "cpmn",
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"Deseret": "dsrt",
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"Glagolitic": "glag",
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"EgyptianHieroglyphs": "egyp",
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"ImperialAramaic": "armi",
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"LinearA": "lina",
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"LinearB": "linb",
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"Lisu": "lisu",
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"Lycian": "lyci",
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"Lydian": "lydi",
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"Ogham": "ogam",
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"OldItalic": "ital",
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"OldPersian": "xpeo",
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"OldSouthArabian": "sarb",
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"OldTurkic": "orkh",
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"OldSogdian": "sogo",
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"OldNorthArabian": "narb",
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"OldHungarian": "hung",
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"Osmanya": "osma",
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"Phoenician": "phnx",
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"SumeroAkkadianCuneiform": "xsux",
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"Ugaritic": "ugar",
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"OlChiki": "olck",
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"TaiLe": "tale",
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"Cuneiform": "xsux",
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"Cypriot": "cprt",
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"Runic": "runr",
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"Shavian": "shaw",
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"Vai": "vai ",
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"Yi": "yi ",
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"AnatolianHieroglyphs": "hluw",
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"Bamum": "bamu",
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"ByzantineMusic": "byzm",
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"Gothic": "goth",
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"ImperialAramaic": "armi",
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"InscriptionalPahlavi": "phli",
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"InscriptionalParthian": "prti",
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"Khojki": "khoj",
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"MathematicalAlphanumericSymbols": "math",
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"MeroiticCursive": "merc",
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"MeroiticHieroglyphs": "mero",
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"MusicalSymbols": "musc",
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"Palmyrene": "palm",
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"Rejang": "rjng",
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"Samaritan": "samr",
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"Carian": "cari",
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"Ahom": "ahom",
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"Adlam": "adlm",
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"Dogra": "dogr",
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"Lisu": "lisu",
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"Mandaean": "mand",
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"Manichaean": "mani",
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"Tifinagh": "tfng",
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"Wancho": "wcho",
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"Yezidi": "yezi",
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"Cherokee": "cher",
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"Chorasmian": "chrs",
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"PahawhHmong": "hmng",
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"Phagspa": "phag",
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"Sundanese": "sund",
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"WarangCiti": "wara",
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"SylotiNagri": "sylo",
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"PsalterPahlavi": "phlp",
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"CaucasianAlbanian": "aghb",
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"Medefaidrin": "medf",
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"MeiteiMayek": "mtei",
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"MendeKikakui": "mend",
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"Mro": "mroo",
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"Multani": "mult",
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"Nabataean": "nbat",
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"Nandinagari": "nand",
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"Newa": "newa",
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"NewTaiLue": "talu",
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"Nushu": "nshu",
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"NyiakengPuachueHmong": "hmnp",
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"OldPermic": "perm",
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"SoraSompeng": "sora",
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"Soyombo": "soyo",
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"SylotiNagri": "sylo",
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"Tagbanwa": "tagb",
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"Tagalog": "tglg",
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"Takri": "takr",
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"TaiTham": "lana",
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"TaiViet": "tavt",
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"Tangut": "tang",
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"Thaana": "thaa",
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"UgariticCuneiform": "ugar",
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"ZanabazarSquare": "zanb",
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"SignWriting": "sgnw",
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"OldUyghur": "ougr",
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"Tangsa": "tnsa",
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"Toto": "toto",
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"Vithkuqi": "vith",
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"Duployan": "dupl",
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"Hatran": "hatr",
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# These last two would only merge using the long script name including the 'NotoSerif' part
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"NotoSerifYezidi": "yezi",
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"NotoSerifNyiakengPuachueHmong": "hmnp",
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}
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def get_opentype_script_tag(fontfile):
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fontfile = os.path.basename(fontfile)
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if fontfile.startswith("NotoSans"):
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fontfile = fontfile[8:]
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fontfile = fontfile[: fontfile.index("-")]
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return SCRIPT_TO_OPENTYPE_SCRIPT_TAG[fontfile]
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def add_gsub_to_font(fontfile):
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"""Adds an empty GSUB table to a font."""
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font = ttLib.TTFont(fontfile)
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gsub_table = ttLib.getTableClass("GSUB")("GSUB")
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gsub_table.table = otTables.GSUB()
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gsub_table.table.Version = 1.0
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gsub_table.table.ScriptList = otTables.ScriptList()
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gsub_table.table.ScriptCount = 1
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gsub_table.table.LookupList = otTables.LookupList()
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gsub_table.table.LookupList.LookupCount = 0
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gsub_table.table.LookupList.Lookup = []
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gsub_table.table.FeatureList = otTables.FeatureList()
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gsub_table.table.FeatureList.FeatureCount = 0
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gsub_table.table.LookupList.FeatureRecord = []
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script_record = otTables.ScriptRecord()
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script_record.ScriptTag = get_opentype_script_tag(fontfile)
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script_record.Script = otTables.Script()
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script_record.Script.LangSysCount = 0
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script_record.Script.LangSysRecord = []
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default_lang_sys = otTables.DefaultLangSys()
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default_lang_sys.FeatureIndex = []
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default_lang_sys.FeatureCount = 0
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default_lang_sys.LookupOrder = None
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default_lang_sys.ReqFeatureIndex = 65535
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script_record.Script.DefaultLangSys = default_lang_sys
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gsub_table.table.ScriptList.ScriptRecord = [script_record]
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font["GSUB"] = gsub_table
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target_file = tempfile.gettempdir() + "/" + os.path.basename(fontfile)
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font.save(target_file)
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return target_file
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def main():
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output_filename = sys.argv[-1]
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weight = sys.argv[-2]
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font_name = sys.argv[-3]
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ps_name = sys.argv[-4]
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input_filenames = sys.argv[1:-4]
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# Add a GSUB table to the fonts that do not have one
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for index, filename in enumerate(input_filenames):
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if not has_gsub_table(filename):
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input_filenames[index] = add_gsub_to_font(filename)
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# Merge the fonts together
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merger = merge.Merger()
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font = merger.merge(input_filenames)
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# Use the line metrics defined by the first font
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metrics = read_line_metrics(ttLib.TTFont(input_filenames[0]))
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set_line_metrics(font, metrics)
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# Rename the result
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for record in font['name'].names:
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if record.nameID == 1:
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record.string = font_name
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elif record.nameID == 4:
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record.string = "{} {}".format(font_name, weight)
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elif record.nameID == 6:
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record.string = "{}-{}".format(ps_name, weight.replace(' ', ''))
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font.save(output_filename)
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if __name__ == '__main__':
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main()
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@ -1,29 +0,0 @@
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if ($argc < 6)
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Error ("Expected arguments - Font1, Font2, Font3, ..., FontName, FullName, FontWeight, OutputFilename")
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endif
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FONTNAME = ToString($argv[$argc - 4])
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FULLNAME = ToString($argv[$argc - 3])
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FONTWEIGHT = ToString($argv[$argc - 2])
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SRCFONTNAME = ToString($argv[1])
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DESTFONTNAME = ToString($argv[$argc - 1])
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Open(SRCFONTNAME)
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i = 2
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while (i < $argc - 4)
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MergeFonts($argv[i])
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i = i + 1
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endloop
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SetFontNames(FONTNAME, FULLNAME, FULLNAME, FONTWEIGHT, "", "1.0.0")
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Generate(DESTFONTNAME)
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Close()
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Open(DESTFONTNAME)
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Reencode("unicode")
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SelectWorthOutputting()
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SelectInvert()
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BuildAccented()
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Generate(DESTFONTNAME)
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Close()
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