Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 1 | #!/usr/bin/python |
| 2 | |
| 3 | # Python OpenType Layout Subsetter |
Behdad Esfahbod | 0fe6a51 | 2013-07-23 11:17:35 -0400 | [diff] [blame] | 4 | # |
| 5 | # Copyright 2013 Google, Inc. All Rights Reserved. |
| 6 | # |
| 7 | # Licensed under the Apache License, Version 2.0 (the "License"); |
| 8 | # you may not use this file except in compliance with the License. |
| 9 | # You may obtain a copy of the License at |
| 10 | # |
| 11 | # http://www.apache.org/licenses/LICENSE-2.0 |
| 12 | # |
| 13 | # Unless required by applicable law or agreed to in writing, software |
| 14 | # distributed under the License is distributed on an "AS IS" BASIS, |
| 15 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 16 | # See the License for the specific language governing permissions and |
| 17 | # limitations under the License. |
| 18 | # |
| 19 | # Google Author(s): Behdad Esfahbod |
| 20 | # |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 21 | |
Behdad Esfahbod | fa3bc5e | 2013-07-24 14:37:58 -0400 | [diff] [blame] | 22 | # Try running on PyPy |
| 23 | try: |
| 24 | import numpypy |
| 25 | except ImportError: |
| 26 | pass |
| 27 | |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 28 | import fontTools.ttx |
Behdad Esfahbod | 4cf7a80 | 2013-07-24 16:08:35 -0400 | [diff] [blame^] | 29 | import struct |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 30 | |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 31 | |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 32 | def add_method (*clazzes): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 33 | def wrapper(method): |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 34 | for clazz in clazzes: |
Behdad Esfahbod | c0d5959 | 2013-07-24 14:41:47 -0400 | [diff] [blame] | 35 | assert clazz.__name__ != 'DefaultTable', 'Oops, table class not found.' |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 36 | setattr (clazz, method.func_name, method) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 37 | return wrapper |
| 38 | |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 39 | def unique_sorted (l): |
| 40 | return sorted ({v:1 for v in l}.keys ()) |
| 41 | |
| 42 | |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 43 | @add_method(fontTools.ttLib.tables.otTables.Coverage) |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 44 | def intersect_glyphs (self, glyphs): |
| 45 | "Returns ascending list of matching coverage values." |
| 46 | return [i for (i,g) in enumerate (self.glyphs) if g in glyphs] |
| 47 | |
| 48 | @add_method(fontTools.ttLib.tables.otTables.Coverage) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 49 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | d821ea0 | 2013-07-23 10:50:43 -0400 | [diff] [blame] | 50 | "Returns ascending list of remaining coverage values." |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 51 | indices = self.intersect_glyphs (glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 52 | self.glyphs = [g for g in self.glyphs if g in glyphs] |
| 53 | return indices |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 54 | |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 55 | @add_method(fontTools.ttLib.tables.otTables.ClassDef) |
Behdad Esfahbod | b8d5588 | 2013-07-23 22:17:39 -0400 | [diff] [blame] | 56 | def intersect_glyphs (self, glyphs): |
| 57 | "Returns ascending list of matching class values." |
| 58 | return unique_sorted (v for g,v in self.classDefs.items() if g in glyphs) |
| 59 | |
| 60 | @add_method(fontTools.ttLib.tables.otTables.ClassDef) |
| 61 | def intersects_glyphs_class (self, glyphs, klass): |
| 62 | "Returns true if any of glyphs has requested class." |
| 63 | return any (g in glyphs for g,v in self.classDefs.items() if v == klass) |
| 64 | |
| 65 | @add_method(fontTools.ttLib.tables.otTables.ClassDef) |
Behdad Esfahbod | de71dca | 2013-07-24 12:40:54 -0400 | [diff] [blame] | 66 | def subset_glyphs (self, glyphs, remap=False): |
Behdad Esfahbod | 4aa6ce3 | 2013-07-22 12:15:36 -0400 | [diff] [blame] | 67 | "Returns ascending list of remaining classes." |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 68 | self.classDefs = {g:v for g,v in self.classDefs.items() if g in glyphs} |
Behdad Esfahbod | de71dca | 2013-07-24 12:40:54 -0400 | [diff] [blame] | 69 | indices = unique_sorted (self.classDefs.values ()) |
| 70 | if remap: |
| 71 | self.remap (indices) |
| 72 | return indices |
Behdad Esfahbod | 4aa6ce3 | 2013-07-22 12:15:36 -0400 | [diff] [blame] | 73 | |
| 74 | @add_method(fontTools.ttLib.tables.otTables.ClassDef) |
| 75 | def remap (self, class_map): |
| 76 | "Remaps classes." |
| 77 | self.classDefs = {g:class_map.index (v) for g,v in self.classDefs.items()} |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 78 | |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 79 | @add_method(fontTools.ttLib.tables.otTables.SingleSubst) |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 80 | def closure_glyphs (self, glyphs, table): |
| 81 | if self.Format in [1, 2]: |
| 82 | return [v for g,v in self.mapping.items() if g in glyphs] |
| 83 | else: |
| 84 | assert 0, "unknown format: %s" % self.Format |
| 85 | |
| 86 | @add_method(fontTools.ttLib.tables.otTables.SingleSubst) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 87 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 88 | if self.Format in [1, 2]: |
| 89 | self.mapping = {g:v for g,v in self.mapping.items() if g in glyphs} |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 90 | return bool (self.mapping) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 91 | else: |
| 92 | assert 0, "unknown format: %s" % self.Format |
| 93 | |
| 94 | @add_method(fontTools.ttLib.tables.otTables.MultipleSubst) |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 95 | def closure_glyphs (self, glyphs, table): |
| 96 | if self.Format == 1: |
| 97 | indices = self.Coverage.intersect_glyphs (glyphs) |
| 98 | return sum ((self.Sequence[i].Substitute for i in indices), []) |
| 99 | else: |
| 100 | assert 0, "unknown format: %s" % self.Format |
| 101 | |
| 102 | @add_method(fontTools.ttLib.tables.otTables.MultipleSubst) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 103 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 104 | if self.Format == 1: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 105 | indices = self.Coverage.subset_glyphs (glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 106 | self.Sequence = [self.Sequence[i] for i in indices] |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 107 | self.SequenceCount = len (self.Sequence) |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 108 | return bool (self.SequenceCount) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 109 | else: |
| 110 | assert 0, "unknown format: %s" % self.Format |
| 111 | |
| 112 | @add_method(fontTools.ttLib.tables.otTables.AlternateSubst) |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 113 | def closure_glyphs (self, glyphs, table): |
| 114 | if self.Format == 1: |
| 115 | return sum ((v for g,v in self.alternates.items() if g in glyphs), []) |
| 116 | else: |
| 117 | assert 0, "unknown format: %s" % self.Format |
| 118 | |
| 119 | @add_method(fontTools.ttLib.tables.otTables.AlternateSubst) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 120 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 121 | if self.Format == 1: |
| 122 | self.alternates = {g:v for g,v in self.alternates.items() if g in glyphs} |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 123 | return bool (self.alternates) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 124 | else: |
| 125 | assert 0, "unknown format: %s" % self.Format |
| 126 | |
| 127 | @add_method(fontTools.ttLib.tables.otTables.LigatureSubst) |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 128 | def closure_glyphs (self, glyphs, table): |
| 129 | if self.Format == 1: |
| 130 | return sum (([seq.LigGlyph for seq in seqs if all(c in glyphs for c in seq.Component)] |
Behdad Esfahbod | af2117f | 2013-07-24 13:43:44 -0400 | [diff] [blame] | 131 | for g,seqs in self.ligatures.items() if g in glyphs), []) |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 132 | else: |
| 133 | assert 0, "unknown format: %s" % self.Format |
| 134 | |
| 135 | @add_method(fontTools.ttLib.tables.otTables.LigatureSubst) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 136 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 137 | if self.Format == 1: |
| 138 | self.ligatures = {g:v for g,v in self.ligatures.items() if g in glyphs} |
| 139 | self.ligatures = {g:[seq for seq in seqs if all(c in glyphs for c in seq.Component)] |
| 140 | for g,seqs in self.ligatures.items()} |
| 141 | self.ligatures = {g:v for g,v in self.ligatures.items() if v} |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 142 | return bool (self.ligatures) |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 143 | else: |
| 144 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 145 | |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 146 | @add_method(fontTools.ttLib.tables.otTables.ReverseChainSingleSubst) |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 147 | def closure_glyphs (self, glyphs, table): |
| 148 | if self.Format == 1: |
| 149 | indices = self.Coverage.intersect_glyphs (glyphs) |
| 150 | if not indices or \ |
| 151 | not all (c.intersect_glyphs (glyphs) for c in self.LookAheadCoverage + self.BacktrackCoverage): |
| 152 | return [] |
| 153 | return [self.Substitute[i] for i in indices] |
| 154 | else: |
| 155 | assert 0, "unknown format: %s" % self.Format |
| 156 | |
| 157 | @add_method(fontTools.ttLib.tables.otTables.ReverseChainSingleSubst) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 158 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 159 | if self.Format == 1: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 160 | indices = self.Coverage.subset_glyphs (glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 161 | self.Substitute = [self.Substitute[i] for i in indices] |
| 162 | self.GlyphCount = len (self.Substitute) |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 163 | return bool (self.GlyphCount and all (c.subset_glyphs (glyphs) for c in self.LookAheadCoverage + self.BacktrackCoverage)) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 164 | else: |
| 165 | assert 0, "unknown format: %s" % self.Format |
| 166 | |
| 167 | @add_method(fontTools.ttLib.tables.otTables.SinglePos) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 168 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 169 | if self.Format == 1: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 170 | return len (self.Coverage.subset_glyphs (glyphs)) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 171 | elif self.Format == 2: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 172 | indices = self.Coverage.subset_glyphs (glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 173 | self.Value = [self.Value[i] for i in indices] |
| 174 | self.ValueCount = len (self.Value) |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 175 | return bool (self.ValueCount) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 176 | else: |
| 177 | assert 0, "unknown format: %s" % self.Format |
| 178 | |
| 179 | @add_method(fontTools.ttLib.tables.otTables.PairPos) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 180 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 181 | if self.Format == 1: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 182 | indices = self.Coverage.subset_glyphs (glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 183 | self.PairSet = [self.PairSet[i] for i in indices] |
| 184 | for p in self.PairSet: |
| 185 | p.PairValueRecord = [r for r in p.PairValueRecord if r.SecondGlyph in glyphs] |
| 186 | p.PairValueCount = len (p.PairValueRecord) |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 187 | self.PairSet = [p for p in self.PairSet if p.PairValueCount] |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 188 | self.PairSetCount = len (self.PairSet) |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 189 | return bool (self.PairSetCount) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 190 | elif self.Format == 2: |
Behdad Esfahbod | de71dca | 2013-07-24 12:40:54 -0400 | [diff] [blame] | 191 | class1_map = self.ClassDef1.subset_glyphs (glyphs, remap=True) |
| 192 | class2_map = self.ClassDef2.subset_glyphs (glyphs, remap=True) |
Behdad Esfahbod | 4aa6ce3 | 2013-07-22 12:15:36 -0400 | [diff] [blame] | 193 | self.Class1Record = [self.Class1Record[i] for i in class1_map] |
| 194 | for c in self.Class1Record: |
| 195 | c.Class2Record = [c.Class2Record[i] for i in class2_map] |
| 196 | self.Class1Count = len (class1_map) |
| 197 | self.Class2Count = len (class2_map) |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 198 | return bool (self.Class1Count and self.Class2Count and self.Coverage.subset_glyphs (glyphs)) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 199 | else: |
| 200 | assert 0, "unknown format: %s" % self.Format |
| 201 | |
| 202 | @add_method(fontTools.ttLib.tables.otTables.CursivePos) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 203 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 204 | if self.Format == 1: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 205 | indices = self.Coverage.subset_glyphs (glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 206 | self.EntryExitRecord = [self.EntryExitRecord[i] for i in indices] |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 207 | self.EntryExitCount = len (self.EntryExitRecord) |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 208 | return bool (self.EntryExitCount) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 209 | else: |
| 210 | assert 0, "unknown format: %s" % self.Format |
| 211 | |
| 212 | @add_method(fontTools.ttLib.tables.otTables.MarkBasePos) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 213 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 214 | if self.Format == 1: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 215 | mark_indices = self.MarkCoverage.subset_glyphs (glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 216 | self.MarkArray.MarkRecord = [self.MarkArray.MarkRecord[i] for i in mark_indices] |
| 217 | self.MarkArray.MarkCount = len (self.MarkArray.MarkRecord) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 218 | base_indices = self.BaseCoverage.subset_glyphs (glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 219 | self.BaseArray.BaseRecord = [self.BaseArray.BaseRecord[i] for i in base_indices] |
| 220 | self.BaseArray.BaseCount = len (self.BaseArray.BaseRecord) |
Behdad Esfahbod | c6396b7 | 2013-07-22 12:31:33 -0400 | [diff] [blame] | 221 | # Prune empty classes |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 222 | class_indices = unique_sorted (v.Class for v in self.MarkArray.MarkRecord) |
Behdad Esfahbod | c6396b7 | 2013-07-22 12:31:33 -0400 | [diff] [blame] | 223 | self.ClassCount = len (class_indices) |
| 224 | for m in self.MarkArray.MarkRecord: |
| 225 | m.Class = class_indices.index (m.Class) |
| 226 | for b in self.BaseArray.BaseRecord: |
| 227 | b.BaseAnchor = [b.BaseAnchor[i] for i in class_indices] |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 228 | return bool (self.ClassCount and self.MarkArray.MarkCount and self.BaseArray.BaseCount) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 229 | else: |
| 230 | assert 0, "unknown format: %s" % self.Format |
| 231 | |
| 232 | @add_method(fontTools.ttLib.tables.otTables.MarkLigPos) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 233 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 234 | if self.Format == 1: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 235 | mark_indices = self.MarkCoverage.subset_glyphs (glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 236 | self.MarkArray.MarkRecord = [self.MarkArray.MarkRecord[i] for i in mark_indices] |
| 237 | self.MarkArray.MarkCount = len (self.MarkArray.MarkRecord) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 238 | ligature_indices = self.LigatureCoverage.subset_glyphs (glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 239 | self.LigatureArray.LigatureAttach = [self.LigatureArray.LigatureAttach[i] for i in ligature_indices] |
| 240 | self.LigatureArray.LigatureCount = len (self.LigatureArray.LigatureAttach) |
Behdad Esfahbod | c6396b7 | 2013-07-22 12:31:33 -0400 | [diff] [blame] | 241 | # Prune empty classes |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 242 | class_indices = unique_sorted (v.Class for v in self.MarkArray.MarkRecord) |
Behdad Esfahbod | c6396b7 | 2013-07-22 12:31:33 -0400 | [diff] [blame] | 243 | self.ClassCount = len (class_indices) |
| 244 | for m in self.MarkArray.MarkRecord: |
| 245 | m.Class = class_indices.index (m.Class) |
| 246 | for l in self.LigatureArray.LigatureAttach: |
| 247 | for c in l.ComponentRecord: |
| 248 | c.LigatureAnchor = [c.LigatureAnchor[i] for i in class_indices] |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 249 | return bool (self.ClassCount and self.MarkArray.MarkCount and self.LigatureArray.LigatureCount) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 250 | else: |
| 251 | assert 0, "unknown format: %s" % self.Format |
| 252 | |
| 253 | @add_method(fontTools.ttLib.tables.otTables.MarkMarkPos) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 254 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 255 | if self.Format == 1: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 256 | mark1_indices = self.Mark1Coverage.subset_glyphs (glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 257 | self.Mark1Array.MarkRecord = [self.Mark1Array.MarkRecord[i] for i in mark1_indices] |
| 258 | self.Mark1Array.MarkCount = len (self.Mark1Array.MarkRecord) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 259 | mark2_indices = self.Mark2Coverage.subset_glyphs (glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 260 | self.Mark2Array.Mark2Record = [self.Mark2Array.Mark2Record[i] for i in mark2_indices] |
| 261 | self.Mark2Array.MarkCount = len (self.Mark2Array.Mark2Record) |
Behdad Esfahbod | c6396b7 | 2013-07-22 12:31:33 -0400 | [diff] [blame] | 262 | # Prune empty classes |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 263 | class_indices = unique_sorted (v.Class for v in self.Mark1Array.MarkRecord) |
Behdad Esfahbod | c6396b7 | 2013-07-22 12:31:33 -0400 | [diff] [blame] | 264 | self.ClassCount = len (class_indices) |
| 265 | for m in self.Mark1Array.MarkRecord: |
| 266 | m.Class = class_indices.index (m.Class) |
| 267 | for b in self.Mark2Array.Mark2Record: |
| 268 | b.Mark2Anchor = [b.Mark2Anchor[i] for i in class_indices] |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 269 | return bool (self.ClassCount and self.Mark1Array.MarkCount and self.Mark2Array.MarkCount) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 270 | else: |
| 271 | assert 0, "unknown format: %s" % self.Format |
| 272 | |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 273 | @add_method(fontTools.ttLib.tables.otTables.SingleSubst, |
| 274 | fontTools.ttLib.tables.otTables.MultipleSubst, |
| 275 | fontTools.ttLib.tables.otTables.AlternateSubst, |
| 276 | fontTools.ttLib.tables.otTables.LigatureSubst, |
| 277 | fontTools.ttLib.tables.otTables.ReverseChainSingleSubst, |
| 278 | fontTools.ttLib.tables.otTables.SinglePos, |
| 279 | fontTools.ttLib.tables.otTables.PairPos, |
| 280 | fontTools.ttLib.tables.otTables.CursivePos, |
| 281 | fontTools.ttLib.tables.otTables.MarkBasePos, |
| 282 | fontTools.ttLib.tables.otTables.MarkLigPos, |
| 283 | fontTools.ttLib.tables.otTables.MarkMarkPos) |
| 284 | def subset_lookups (self, lookup_indices): |
| 285 | pass |
| 286 | |
| 287 | @add_method(fontTools.ttLib.tables.otTables.SingleSubst, |
| 288 | fontTools.ttLib.tables.otTables.MultipleSubst, |
| 289 | fontTools.ttLib.tables.otTables.AlternateSubst, |
| 290 | fontTools.ttLib.tables.otTables.LigatureSubst, |
| 291 | fontTools.ttLib.tables.otTables.ReverseChainSingleSubst, |
| 292 | fontTools.ttLib.tables.otTables.SinglePos, |
| 293 | fontTools.ttLib.tables.otTables.PairPos, |
| 294 | fontTools.ttLib.tables.otTables.CursivePos, |
| 295 | fontTools.ttLib.tables.otTables.MarkBasePos, |
| 296 | fontTools.ttLib.tables.otTables.MarkLigPos, |
| 297 | fontTools.ttLib.tables.otTables.MarkMarkPos) |
| 298 | def collect_lookups (self): |
| 299 | return [] |
| 300 | |
Behdad Esfahbod | 44c2b3c | 2013-07-23 16:00:32 -0400 | [diff] [blame] | 301 | @add_method(fontTools.ttLib.tables.otTables.ContextSubst, fontTools.ttLib.tables.otTables.ChainContextSubst, |
| 302 | fontTools.ttLib.tables.otTables.ContextPos, fontTools.ttLib.tables.otTables.ChainContextPos) |
| 303 | def __classify_context (self): |
Behdad Esfahbod | b178dca | 2013-07-23 22:51:50 -0400 | [diff] [blame] | 304 | |
| 305 | class ContextHelper: |
| 306 | def __init__ (self, klass, Format): |
| 307 | if klass.__name__.endswith ('Subst'): |
Behdad Esfahbod | 9e73572 | 2013-07-23 16:35:23 -0400 | [diff] [blame] | 308 | Typ = 'Sub' |
| 309 | Type = 'Subst' |
Behdad Esfahbod | 6870f8a | 2013-07-23 16:18:30 -0400 | [diff] [blame] | 310 | else: |
Behdad Esfahbod | 9e73572 | 2013-07-23 16:35:23 -0400 | [diff] [blame] | 311 | Typ = 'Pos' |
| 312 | Type = 'Pos' |
Behdad Esfahbod | b178dca | 2013-07-23 22:51:50 -0400 | [diff] [blame] | 313 | if klass.__name__.startswith ('Chain'): |
Behdad Esfahbod | 9e73572 | 2013-07-23 16:35:23 -0400 | [diff] [blame] | 314 | Chain = 'Chain' |
| 315 | else: |
| 316 | Chain = '' |
| 317 | ChainTyp = Chain+Typ |
| 318 | |
| 319 | self.Typ = Typ |
| 320 | self.Type = Type |
| 321 | self.Chain = Chain |
| 322 | self.ChainTyp = ChainTyp |
| 323 | |
| 324 | self.LookupRecord = Type+'LookupRecord' |
| 325 | |
Behdad Esfahbod | 452ab6c | 2013-07-23 22:57:43 -0400 | [diff] [blame] | 326 | if Format == 1: |
| 327 | ContextData = None |
| 328 | ChainContextData = None |
| 329 | RuleData = lambda r: r.Input |
| 330 | ChainRuleData = lambda r: r.Backtrack + r.Input + r.LookAhead |
Behdad Esfahbod | 44fc6f6 | 2013-07-24 11:24:39 -0400 | [diff] [blame] | 331 | SetRuleData = None |
| 332 | ChainSetRuleData = None |
Behdad Esfahbod | 452ab6c | 2013-07-23 22:57:43 -0400 | [diff] [blame] | 333 | elif Format == 2: |
Behdad Esfahbod | e3f2073 | 2013-07-24 11:26:43 -0400 | [diff] [blame] | 334 | ContextData = lambda r: (r.ClassDef,) |
| 335 | ChainContextData = lambda r: (r.LookAheadClassDef, r.InputClassDef, r.BacktrackClassDef) |
| 336 | RuleData = lambda r: (r.Class,) |
| 337 | ChainRuleData = lambda r: (r.LookAhead, r.Input, r.Backtrack) |
| 338 | def SetRuleData (r, d): (r.Class,) = d |
| 339 | def ChainSetRuleData (r, d): (r.LookAhead, r.Input, r.Backtrack) = d |
Behdad Esfahbod | 452ab6c | 2013-07-23 22:57:43 -0400 | [diff] [blame] | 340 | elif Format == 3: |
| 341 | ContextData = None |
| 342 | ChainContextData = None |
| 343 | RuleData = lambda r: r.Coverage |
| 344 | ChainRuleData = lambda r: r.LookAheadCoverage + r.InputCoverage + r.BacktrackCoverage |
Behdad Esfahbod | 44fc6f6 | 2013-07-24 11:24:39 -0400 | [diff] [blame] | 345 | SetRuleData = None |
| 346 | ChainSetRuleData = None |
Behdad Esfahbod | 452ab6c | 2013-07-23 22:57:43 -0400 | [diff] [blame] | 347 | else: |
| 348 | assert 0, "unknown format: %s" % Format |
| 349 | |
Behdad Esfahbod | 1ab2dbf | 2013-07-23 17:17:21 -0400 | [diff] [blame] | 350 | if Chain: |
Behdad Esfahbod | 707a37a | 2013-07-23 21:08:26 -0400 | [diff] [blame] | 351 | self.ContextData = ChainContextData |
Behdad Esfahbod | b8d5588 | 2013-07-23 22:17:39 -0400 | [diff] [blame] | 352 | self.RuleData = ChainRuleData |
Behdad Esfahbod | 44fc6f6 | 2013-07-24 11:24:39 -0400 | [diff] [blame] | 353 | self.SetRuleData = ChainSetRuleData |
Behdad Esfahbod | 1ab2dbf | 2013-07-23 17:17:21 -0400 | [diff] [blame] | 354 | else: |
Behdad Esfahbod | 707a37a | 2013-07-23 21:08:26 -0400 | [diff] [blame] | 355 | self.ContextData = ContextData |
Behdad Esfahbod | b8d5588 | 2013-07-23 22:17:39 -0400 | [diff] [blame] | 356 | self.RuleData = RuleData |
Behdad Esfahbod | 44fc6f6 | 2013-07-24 11:24:39 -0400 | [diff] [blame] | 357 | self.SetRuleData = SetRuleData |
Behdad Esfahbod | 9e73572 | 2013-07-23 16:35:23 -0400 | [diff] [blame] | 358 | |
Behdad Esfahbod | bac31f5 | 2013-07-23 23:00:39 -0400 | [diff] [blame] | 359 | if Format == 1: |
| 360 | self.Rule = ChainTyp+'Rule' |
| 361 | self.RuleCount = ChainTyp+'RuleCount' |
| 362 | self.RuleSet = ChainTyp+'RuleSet' |
| 363 | self.RuleSetCount = ChainTyp+'RuleSetCount' |
| 364 | elif Format == 2: |
| 365 | self.Rule = ChainTyp+'ClassRule' |
| 366 | self.RuleCount = ChainTyp+'ClassRuleCount' |
| 367 | self.RuleSet = ChainTyp+'ClassSet' |
| 368 | self.RuleSetCount = ChainTyp+'ClassSetCount' |
Behdad Esfahbod | 8998700 | 2013-07-23 23:07:42 -0400 | [diff] [blame] | 369 | |
Behdad Esfahbod | bac31f5 | 2013-07-23 23:00:39 -0400 | [diff] [blame] | 370 | self.ClassDef = 'InputClassDef' if Chain else 'ClassDef' |
Behdad Esfahbod | 2710839 | 2013-07-23 16:40:47 -0400 | [diff] [blame] | 371 | |
Behdad Esfahbod | b178dca | 2013-07-23 22:51:50 -0400 | [diff] [blame] | 372 | if self.Format not in [1, 2, 3]: |
| 373 | return None # Don't shoot the messenger; let it go |
| 374 | if not hasattr (self.__class__, "__ContextHelpers"): |
| 375 | self.__class__.__ContextHelpers = {} |
| 376 | if self.Format not in self.__class__.__ContextHelpers: |
| 377 | self.__class__.__ContextHelpers[self.Format] = ContextHelper (self.__class__, self.Format) |
| 378 | return self.__class__.__ContextHelpers[self.Format] |
Behdad Esfahbod | 44c2b3c | 2013-07-23 16:00:32 -0400 | [diff] [blame] | 379 | |
Behdad Esfahbod | f2b6d9c | 2013-07-23 17:31:54 -0400 | [diff] [blame] | 380 | @add_method(fontTools.ttLib.tables.otTables.ContextSubst, fontTools.ttLib.tables.otTables.ChainContextSubst) |
Behdad Esfahbod | 0077697 | 2013-07-23 15:33:00 -0400 | [diff] [blame] | 381 | def closure_glyphs (self, glyphs, table): |
Behdad Esfahbod | 1ab2dbf | 2013-07-23 17:17:21 -0400 | [diff] [blame] | 382 | c = self.__classify_context () |
| 383 | |
Behdad Esfahbod | 0077697 | 2013-07-23 15:33:00 -0400 | [diff] [blame] | 384 | if self.Format == 1: |
Behdad Esfahbod | eeca982 | 2013-07-23 17:42:17 -0400 | [diff] [blame] | 385 | indices = self.Coverage.intersect_glyphs (glyphs) |
| 386 | rss = getattr (self, c.RuleSet) |
| 387 | return sum ((table.table.LookupList.Lookup[ll.LookupListIndex].closure_glyphs (glyphs, table) \ |
| 388 | for i in indices \ |
| 389 | for r in getattr (rss[i], c.Rule) \ |
Behdad Esfahbod | b178dca | 2013-07-23 22:51:50 -0400 | [diff] [blame] | 390 | if r and all (g in glyphs for g in c.RuleData (r)) \ |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 391 | for ll in getattr (r, c.LookupRecord) if ll \ |
Behdad Esfahbod | eeca982 | 2013-07-23 17:42:17 -0400 | [diff] [blame] | 392 | ), []) |
Behdad Esfahbod | 0077697 | 2013-07-23 15:33:00 -0400 | [diff] [blame] | 393 | elif self.Format == 2: |
Behdad Esfahbod | 3108430 | 2013-07-23 22:22:38 -0400 | [diff] [blame] | 394 | if not self.Coverage.intersect_glyphs (glyphs): |
| 395 | return [] |
Behdad Esfahbod | b8d5588 | 2013-07-23 22:17:39 -0400 | [diff] [blame] | 396 | indices = getattr (self, c.ClassDef).intersect_glyphs (glyphs) |
Behdad Esfahbod | bac31f5 | 2013-07-23 23:00:39 -0400 | [diff] [blame] | 397 | rss = getattr (self, c.RuleSet) |
Behdad Esfahbod | b8d5588 | 2013-07-23 22:17:39 -0400 | [diff] [blame] | 398 | return sum ((table.table.LookupList.Lookup[ll.LookupListIndex].closure_glyphs (glyphs, table) \ |
| 399 | for i in indices \ |
Behdad Esfahbod | bac31f5 | 2013-07-23 23:00:39 -0400 | [diff] [blame] | 400 | for r in getattr (rss[i], c.Rule) \ |
Behdad Esfahbod | b8d5588 | 2013-07-23 22:17:39 -0400 | [diff] [blame] | 401 | if r and all (cd.intersects_glyphs_class (glyphs, k) \ |
Behdad Esfahbod | b178dca | 2013-07-23 22:51:50 -0400 | [diff] [blame] | 402 | for cd,k in zip (c.ContextData (self), c.RuleData (r))) \ |
Behdad Esfahbod | b8d5588 | 2013-07-23 22:17:39 -0400 | [diff] [blame] | 403 | for ll in getattr (r, c.LookupRecord) if ll \ |
| 404 | ), []) |
Behdad Esfahbod | 0077697 | 2013-07-23 15:33:00 -0400 | [diff] [blame] | 405 | elif self.Format == 3: |
Behdad Esfahbod | b178dca | 2013-07-23 22:51:50 -0400 | [diff] [blame] | 406 | if not all (x.intersect_glyphs (glyphs) for x in c.RuleData (self)): |
Behdad Esfahbod | 0077697 | 2013-07-23 15:33:00 -0400 | [diff] [blame] | 407 | return [] |
| 408 | return sum ((table.table.LookupList.Lookup[ll.LookupListIndex].closure_glyphs (glyphs, table) \ |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 409 | for ll in getattr (self, c.LookupRecord) if ll), []) |
Behdad Esfahbod | 0077697 | 2013-07-23 15:33:00 -0400 | [diff] [blame] | 410 | else: |
| 411 | assert 0, "unknown format: %s" % self.Format |
| 412 | |
Behdad Esfahbod | cbba4a6 | 2013-07-23 17:27:18 -0400 | [diff] [blame] | 413 | @add_method(fontTools.ttLib.tables.otTables.ContextSubst, fontTools.ttLib.tables.otTables.ContextPos, |
| 414 | fontTools.ttLib.tables.otTables.ChainContextSubst, fontTools.ttLib.tables.otTables.ChainContextPos) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 415 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | d8c7e10 | 2013-07-23 17:07:06 -0400 | [diff] [blame] | 416 | c = self.__classify_context () |
| 417 | |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 418 | if self.Format == 1: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 419 | indices = self.Coverage.subset_glyphs (glyphs) |
Behdad Esfahbod | d8c7e10 | 2013-07-23 17:07:06 -0400 | [diff] [blame] | 420 | rss = getattr (self, c.RuleSet) |
| 421 | rss = [rss[i] for i in indices] |
| 422 | for rs in rss: |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 423 | if rs: |
| 424 | ss = getattr (rs, c.Rule) |
| 425 | ss = [r for r in ss \ |
Behdad Esfahbod | b178dca | 2013-07-23 22:51:50 -0400 | [diff] [blame] | 426 | if r and all (g in glyphs for g in c.RuleData (r))] |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 427 | setattr (rs, c.Rule, ss) |
| 428 | setattr (rs, c.RuleCount, len (ss)) |
Behdad Esfahbod | cbba4a6 | 2013-07-23 17:27:18 -0400 | [diff] [blame] | 429 | # Prune empty subrulesets |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 430 | rss = [rs for rs in rss if rs and getattr (rs, c.Rule)] |
Behdad Esfahbod | d8c7e10 | 2013-07-23 17:07:06 -0400 | [diff] [blame] | 431 | setattr (self, c.RuleSet, rss) |
| 432 | setattr (self, c.RuleSetCount, len (rss)) |
| 433 | return bool (rss) |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 434 | elif self.Format == 2: |
Behdad Esfahbod | e9a3bd6 | 2013-07-23 22:41:11 -0400 | [diff] [blame] | 435 | if not self.Coverage.subset_glyphs (glyphs): |
| 436 | return False |
| 437 | indices = getattr (self, c.ClassDef).intersect_glyphs (glyphs) |
Behdad Esfahbod | bac31f5 | 2013-07-23 23:00:39 -0400 | [diff] [blame] | 438 | rss = getattr (self, c.RuleSet) |
Behdad Esfahbod | e9a3bd6 | 2013-07-23 22:41:11 -0400 | [diff] [blame] | 439 | rss = [rss[i] for i in indices] |
| 440 | ContextData = c.ContextData (self) |
Behdad Esfahbod | de71dca | 2013-07-24 12:40:54 -0400 | [diff] [blame] | 441 | klass_maps = [x.subset_glyphs (glyphs, remap=True) for x in ContextData] |
Behdad Esfahbod | e9a3bd6 | 2013-07-23 22:41:11 -0400 | [diff] [blame] | 442 | for rs in rss: |
| 443 | if rs: |
Behdad Esfahbod | bac31f5 | 2013-07-23 23:00:39 -0400 | [diff] [blame] | 444 | ss = getattr (rs, c.Rule) |
Behdad Esfahbod | e9a3bd6 | 2013-07-23 22:41:11 -0400 | [diff] [blame] | 445 | ss = [r for r in ss \ |
| 446 | if r and all (k in klass_map \ |
Behdad Esfahbod | b178dca | 2013-07-23 22:51:50 -0400 | [diff] [blame] | 447 | for klass_map,k in zip (klass_maps, c.RuleData (r)))] |
Behdad Esfahbod | bac31f5 | 2013-07-23 23:00:39 -0400 | [diff] [blame] | 448 | setattr (rs, c.Rule, ss) |
| 449 | setattr (rs, c.RuleCount, len (ss)) |
Behdad Esfahbod | e9a3bd6 | 2013-07-23 22:41:11 -0400 | [diff] [blame] | 450 | |
| 451 | # Remap rule classes |
| 452 | for r in ss: |
Behdad Esfahbod | 44fc6f6 | 2013-07-24 11:24:39 -0400 | [diff] [blame] | 453 | c.SetRuleData (r, (klass_map.index (k) \ |
| 454 | for klassmap,k in zip (klass_maps, c.RuleData (r)))) |
Behdad Esfahbod | e9a3bd6 | 2013-07-23 22:41:11 -0400 | [diff] [blame] | 455 | # Prune empty subrulesets |
Behdad Esfahbod | bac31f5 | 2013-07-23 23:00:39 -0400 | [diff] [blame] | 456 | rss = [rs for rs in rss if rs and getattr (rs, c.Rule)] |
| 457 | setattr (self, c.RuleSet, rss) |
| 458 | setattr (self, c.RuleSetCount, len (rss)) |
Behdad Esfahbod | e9a3bd6 | 2013-07-23 22:41:11 -0400 | [diff] [blame] | 459 | return bool (rss) |
| 460 | |
| 461 | return all (x.subset_glyphs (glyphs) for x in c.ContextData (self)) |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 462 | elif self.Format == 3: |
Behdad Esfahbod | b178dca | 2013-07-23 22:51:50 -0400 | [diff] [blame] | 463 | return all (x.subset_glyphs (glyphs) for x in c.RuleData (self)) |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 464 | else: |
| 465 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 466 | |
Behdad Esfahbod | 44c2b3c | 2013-07-23 16:00:32 -0400 | [diff] [blame] | 467 | @add_method(fontTools.ttLib.tables.otTables.ContextSubst, fontTools.ttLib.tables.otTables.ChainContextSubst, |
| 468 | fontTools.ttLib.tables.otTables.ContextPos, fontTools.ttLib.tables.otTables.ChainContextPos) |
Behdad Esfahbod | 59dfc13 | 2013-07-23 15:39:20 -0400 | [diff] [blame] | 469 | def subset_lookups (self, lookup_indices): |
Behdad Esfahbod | 6870f8a | 2013-07-23 16:18:30 -0400 | [diff] [blame] | 470 | c = self.__classify_context () |
Behdad Esfahbod | 44c2b3c | 2013-07-23 16:00:32 -0400 | [diff] [blame] | 471 | |
Behdad Esfahbod | 1f57363 | 2013-07-23 23:04:43 -0400 | [diff] [blame] | 472 | if self.Format in [1, 2]: |
Behdad Esfahbod | 9e73572 | 2013-07-23 16:35:23 -0400 | [diff] [blame] | 473 | for rs in getattr (self, c.RuleSet): |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 474 | if rs: |
| 475 | for r in getattr (rs, c.Rule): |
| 476 | if r: |
Behdad Esfahbod | 1f57363 | 2013-07-23 23:04:43 -0400 | [diff] [blame] | 477 | setattr (r, c.LookupRecord, [ll for ll in getattr (r, c.LookupRecord) if ll \ |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 478 | if ll.LookupListIndex in lookup_indices]) |
| 479 | for ll in getattr (r, c.LookupRecord): |
| 480 | if ll: |
| 481 | ll.LookupListIndex = lookup_indices.index (ll.LookupListIndex) |
Behdad Esfahbod | 59dfc13 | 2013-07-23 15:39:20 -0400 | [diff] [blame] | 482 | elif self.Format == 3: |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 483 | setattr (self, c.LookupRecord, [ll for ll in getattr (self, c.LookupRecord) if ll \ |
Behdad Esfahbod | 6870f8a | 2013-07-23 16:18:30 -0400 | [diff] [blame] | 484 | if ll.LookupListIndex in lookup_indices]) |
| 485 | for ll in getattr (self, c.LookupRecord): |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 486 | if ll: |
| 487 | ll.LookupListIndex = lookup_indices.index (ll.LookupListIndex) |
Behdad Esfahbod | 59dfc13 | 2013-07-23 15:39:20 -0400 | [diff] [blame] | 488 | else: |
| 489 | assert 0, "unknown format: %s" % self.Format |
| 490 | |
Behdad Esfahbod | 44c2b3c | 2013-07-23 16:00:32 -0400 | [diff] [blame] | 491 | @add_method(fontTools.ttLib.tables.otTables.ContextSubst, fontTools.ttLib.tables.otTables.ChainContextSubst, |
| 492 | fontTools.ttLib.tables.otTables.ContextPos, fontTools.ttLib.tables.otTables.ChainContextPos) |
Behdad Esfahbod | 59dfc13 | 2013-07-23 15:39:20 -0400 | [diff] [blame] | 493 | def collect_lookups (self): |
Behdad Esfahbod | 6870f8a | 2013-07-23 16:18:30 -0400 | [diff] [blame] | 494 | c = self.__classify_context () |
Behdad Esfahbod | 44c2b3c | 2013-07-23 16:00:32 -0400 | [diff] [blame] | 495 | |
Behdad Esfahbod | 1f57363 | 2013-07-23 23:04:43 -0400 | [diff] [blame] | 496 | if self.Format in [1, 2]: |
Behdad Esfahbod | 2710839 | 2013-07-23 16:40:47 -0400 | [diff] [blame] | 497 | return [ll.LookupListIndex \ |
Behdad Esfahbod | bac31f5 | 2013-07-23 23:00:39 -0400 | [diff] [blame] | 498 | for rs in getattr (self, c.RuleSet) if rs \ |
| 499 | for r in getattr (rs, c.Rule) if r \ |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 500 | for ll in getattr (r, c.LookupRecord) if ll] |
Behdad Esfahbod | 59dfc13 | 2013-07-23 15:39:20 -0400 | [diff] [blame] | 501 | elif self.Format == 3: |
Behdad Esfahbod | 6870f8a | 2013-07-23 16:18:30 -0400 | [diff] [blame] | 502 | return [ll.LookupListIndex \ |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 503 | for ll in getattr (self, c.LookupRecord) if ll] |
Behdad Esfahbod | 59dfc13 | 2013-07-23 15:39:20 -0400 | [diff] [blame] | 504 | else: |
| 505 | assert 0, "unknown format: %s" % self.Format |
| 506 | |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 507 | @add_method(fontTools.ttLib.tables.otTables.ExtensionSubst) |
| 508 | def closure_glyphs (self, glyphs, table): |
| 509 | if self.Format == 1: |
| 510 | return self.ExtSubTable.closure_glyphs (glyphs, table) |
| 511 | else: |
| 512 | assert 0, "unknown format: %s" % self.Format |
| 513 | |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 514 | @add_method(fontTools.ttLib.tables.otTables.ExtensionSubst, fontTools.ttLib.tables.otTables.ExtensionPos) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 515 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 516 | if self.Format == 1: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 517 | return self.ExtSubTable.subset_glyphs (glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 518 | else: |
| 519 | assert 0, "unknown format: %s" % self.Format |
| 520 | |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 521 | @add_method(fontTools.ttLib.tables.otTables.ExtensionSubst, fontTools.ttLib.tables.otTables.ExtensionPos) |
| 522 | def subset_lookups (self, lookup_indices): |
| 523 | if self.Format == 1: |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 524 | return self.ExtSubTable.subset_lookups (lookup_indices) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 525 | else: |
| 526 | assert 0, "unknown format: %s" % self.Format |
| 527 | |
| 528 | @add_method(fontTools.ttLib.tables.otTables.ExtensionSubst, fontTools.ttLib.tables.otTables.ExtensionPos) |
| 529 | def collect_lookups (self): |
| 530 | if self.Format == 1: |
| 531 | return self.ExtSubTable.collect_lookups () |
| 532 | else: |
| 533 | assert 0, "unknown format: %s" % self.Format |
| 534 | |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 535 | @add_method(fontTools.ttLib.tables.otTables.Lookup) |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 536 | def closure_glyphs (self, glyphs, table): |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 537 | return sum ((s.closure_glyphs (glyphs, table) for s in self.SubTable if s), []) |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 538 | |
| 539 | @add_method(fontTools.ttLib.tables.otTables.Lookup) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 540 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 541 | self.SubTable = [s for s in self.SubTable if s and s.subset_glyphs (glyphs)] |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 542 | self.SubTableCount = len (self.SubTable) |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 543 | return bool (self.SubTableCount) |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 544 | |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 545 | @add_method(fontTools.ttLib.tables.otTables.Lookup) |
| 546 | def subset_lookups (self, lookup_indices): |
| 547 | for s in self.SubTable: |
| 548 | s.subset_lookups (lookup_indices) |
| 549 | |
| 550 | @add_method(fontTools.ttLib.tables.otTables.Lookup) |
| 551 | def collect_lookups (self): |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 552 | return unique_sorted (sum ((s.collect_lookups () for s in self.SubTable if s), [])) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 553 | |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 554 | @add_method(fontTools.ttLib.tables.otTables.LookupList) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 555 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 556 | "Returns the indices of nonempty lookups." |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 557 | return [i for (i,l) in enumerate (self.Lookup) if l and l.subset_glyphs (glyphs)] |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 558 | |
| 559 | @add_method(fontTools.ttLib.tables.otTables.LookupList) |
| 560 | def subset_lookups (self, lookup_indices): |
| 561 | self.Lookup = [self.Lookup[i] for i in lookup_indices] |
| 562 | self.LookupCount = len (self.Lookup) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 563 | for l in self.Lookup: |
| 564 | l.subset_lookups (lookup_indices) |
| 565 | |
| 566 | @add_method(fontTools.ttLib.tables.otTables.LookupList) |
| 567 | def closure_lookups (self, lookup_indices): |
Behdad Esfahbod | bb7e213 | 2013-07-23 13:48:35 -0400 | [diff] [blame] | 568 | lookup_indices = unique_sorted (lookup_indices) |
| 569 | recurse = lookup_indices |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 570 | while True: |
Behdad Esfahbod | bb7e213 | 2013-07-23 13:48:35 -0400 | [diff] [blame] | 571 | recurse_lookups = sum ((self.Lookup[i].collect_lookups () for i in recurse), []) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 572 | recurse_lookups = [l for l in recurse_lookups if l not in lookup_indices] |
| 573 | if not recurse_lookups: |
Behdad Esfahbod | bb7e213 | 2013-07-23 13:48:35 -0400 | [diff] [blame] | 574 | return unique_sorted (lookup_indices) |
| 575 | recurse_lookups = unique_sorted (recurse_lookups) |
| 576 | lookup_indices.extend (recurse_lookups) |
| 577 | recurse = recurse_lookups |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 578 | |
| 579 | @add_method(fontTools.ttLib.tables.otTables.Feature) |
| 580 | def subset_lookups (self, lookup_indices): |
| 581 | self.LookupListIndex = [l for l in self.LookupListIndex if l in lookup_indices] |
| 582 | # Now map them. |
| 583 | self.LookupListIndex = [lookup_indices.index (l) for l in self.LookupListIndex] |
| 584 | self.LookupCount = len (self.LookupListIndex) |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 585 | return self.LookupCount |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 586 | |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 587 | @add_method(fontTools.ttLib.tables.otTables.Feature) |
| 588 | def collect_lookups (self): |
| 589 | return self.LookupListIndex[:] |
| 590 | |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 591 | @add_method(fontTools.ttLib.tables.otTables.FeatureList) |
| 592 | def subset_lookups (self, lookup_indices): |
| 593 | "Returns the indices of nonempty features." |
| 594 | feature_indices = [i for (i,f) in enumerate (self.FeatureRecord) if f.Feature.subset_lookups (lookup_indices)] |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 595 | self.subset_features (feature_indices) |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 596 | return feature_indices |
| 597 | |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 598 | @add_method(fontTools.ttLib.tables.otTables.FeatureList) |
| 599 | def collect_lookups (self, feature_indices): |
| 600 | return unique_sorted (sum ((self.FeatureRecord[i].Feature.collect_lookups () for i in feature_indices |
| 601 | if i < self.FeatureCount), [])) |
| 602 | |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 603 | @add_method(fontTools.ttLib.tables.otTables.FeatureList) |
| 604 | def subset_features (self, feature_indices): |
| 605 | self.FeatureRecord = [self.FeatureRecord[i] for i in feature_indices] |
| 606 | self.FeatureCount = len (self.FeatureRecord) |
| 607 | return bool (self.FeatureCount) |
| 608 | |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 609 | @add_method(fontTools.ttLib.tables.otTables.DefaultLangSys, fontTools.ttLib.tables.otTables.LangSys) |
| 610 | def subset_features (self, feature_indices): |
Behdad Esfahbod | 69ce150 | 2013-07-22 18:00:31 -0400 | [diff] [blame] | 611 | if self.ReqFeatureIndex in feature_indices: |
| 612 | self.ReqFeatureIndex = feature_indices.index (self.ReqFeatureIndex) |
| 613 | else: |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 614 | self.ReqFeatureIndex = 65535 |
| 615 | self.FeatureIndex = [f for f in self.FeatureIndex if f in feature_indices] |
Behdad Esfahbod | 69ce150 | 2013-07-22 18:00:31 -0400 | [diff] [blame] | 616 | # Now map them. |
| 617 | self.FeatureIndex = [feature_indices.index (f) for f in self.FeatureIndex if f in feature_indices] |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 618 | self.FeatureCount = len (self.FeatureIndex) |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 619 | return bool (self.FeatureCount or self.ReqFeatureIndex != 65535) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 620 | |
| 621 | @add_method(fontTools.ttLib.tables.otTables.DefaultLangSys, fontTools.ttLib.tables.otTables.LangSys) |
| 622 | def collect_features (self): |
| 623 | feature_indices = self.FeatureIndex[:] |
| 624 | if self.ReqFeatureIndex != 65535: |
| 625 | feature_indices.append (self.ReqFeatureIndex) |
| 626 | return unique_sorted (feature_indices) |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 627 | |
| 628 | @add_method(fontTools.ttLib.tables.otTables.Script) |
| 629 | def subset_features (self, feature_indices): |
| 630 | if self.DefaultLangSys and not self.DefaultLangSys.subset_features (feature_indices): |
| 631 | self.DefaultLangSys = None |
| 632 | self.LangSysRecord = [l for l in self.LangSysRecord if l.LangSys.subset_features (feature_indices)] |
| 633 | self.LangSysCount = len (self.LangSysRecord) |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 634 | return bool (self.LangSysCount or self.DefaultLangSys) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 635 | |
| 636 | @add_method(fontTools.ttLib.tables.otTables.Script) |
| 637 | def collect_features (self): |
Behdad Esfahbod | 2307c8b | 2013-07-23 11:18:13 -0400 | [diff] [blame] | 638 | feature_indices = [l.LangSys.collect_features () for l in self.LangSysRecord] |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 639 | if self.DefaultLangSys: |
| 640 | feature_indices.append (self.DefaultLangSys.collect_features ()) |
| 641 | return unique_sorted (sum (feature_indices, [])) |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 642 | |
| 643 | @add_method(fontTools.ttLib.tables.otTables.ScriptList) |
| 644 | def subset_features (self, feature_indices): |
| 645 | self.ScriptRecord = [s for s in self.ScriptRecord if s.Script.subset_features (feature_indices)] |
| 646 | self.ScriptCount = len (self.ScriptRecord) |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 647 | return bool (self.ScriptCount) |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 648 | |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 649 | @add_method(fontTools.ttLib.tables.otTables.ScriptList) |
| 650 | def collect_features (self): |
| 651 | return unique_sorted (sum ((s.Script.collect_features () for s in self.ScriptRecord), [])) |
| 652 | |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 653 | @add_method(fontTools.ttLib.getTableClass('GSUB')) |
| 654 | def closure_glyphs (self, glyphs): |
| 655 | feature_indices = self.table.ScriptList.collect_features () |
| 656 | lookup_indices = self.table.FeatureList.collect_lookups (feature_indices) |
| 657 | glyphs = unique_sorted (glyphs) |
| 658 | while True: |
| 659 | additions = (sum ((self.table.LookupList.Lookup[i].closure_glyphs (glyphs, self) for i in lookup_indices), [])) |
| 660 | additions = unique_sorted (g for g in additions if g not in glyphs) |
| 661 | if not additions: |
| 662 | return glyphs |
| 663 | glyphs.extend (additions) |
| 664 | |
Behdad Esfahbod | fd3923e | 2013-07-22 12:48:17 -0400 | [diff] [blame] | 665 | @add_method(fontTools.ttLib.getTableClass('GSUB'), fontTools.ttLib.getTableClass('GPOS')) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 666 | def subset_glyphs (self, glyphs): |
| 667 | lookup_indices = self.table.LookupList.subset_glyphs (glyphs) |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 668 | self.subset_lookups (lookup_indices) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 669 | self.prune_lookups () |
| 670 | return True |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 671 | |
Behdad Esfahbod | fd3923e | 2013-07-22 12:48:17 -0400 | [diff] [blame] | 672 | @add_method(fontTools.ttLib.getTableClass('GSUB'), fontTools.ttLib.getTableClass('GPOS')) |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 673 | def subset_lookups (self, lookup_indices): |
| 674 | "Retrains specified lookups, then removes empty features, language systems, and scripts." |
Behdad Esfahbod | fd3923e | 2013-07-22 12:48:17 -0400 | [diff] [blame] | 675 | self.table.LookupList.subset_lookups (lookup_indices) |
| 676 | feature_indices = self.table.FeatureList.subset_lookups (lookup_indices) |
| 677 | self.table.ScriptList.subset_features (feature_indices) |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 678 | |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 679 | @add_method(fontTools.ttLib.getTableClass('GSUB'), fontTools.ttLib.getTableClass('GPOS')) |
| 680 | def prune_lookups (self): |
| 681 | "Remove unreferenced lookups" |
| 682 | feature_indices = self.table.ScriptList.collect_features () |
| 683 | lookup_indices = self.table.FeatureList.collect_lookups (feature_indices) |
| 684 | lookup_indices = self.table.LookupList.closure_lookups (lookup_indices) |
| 685 | self.subset_lookups (lookup_indices) |
| 686 | |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 687 | @add_method(fontTools.ttLib.getTableClass('GSUB'), fontTools.ttLib.getTableClass('GPOS')) |
| 688 | def subset_feature_tags (self, feature_tags): |
| 689 | feature_indices = [i for (i,f) in enumerate (self.table.FeatureList.FeatureRecord) if f.FeatureTag in feature_tags] |
| 690 | self.table.FeatureList.subset_features (feature_indices) |
| 691 | self.table.ScriptList.subset_features (feature_indices) |
| 692 | |
| 693 | @add_method(fontTools.ttLib.getTableClass('GSUB'), fontTools.ttLib.getTableClass('GPOS')) |
Behdad Esfahbod | d7b6f8f | 2013-07-23 12:46:52 -0400 | [diff] [blame] | 694 | def prune_pre_subset (self, options): |
Behdad Esfahbod | 4091ec6 | 2013-07-23 13:02:51 -0400 | [diff] [blame] | 695 | if options['layout-features'] and '*' not in options['layout-features']: |
Behdad Esfahbod | ed98c61 | 2013-07-23 12:37:41 -0400 | [diff] [blame] | 696 | self.subset_feature_tags (options['layout-features']) |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 697 | self.prune_lookups () |
| 698 | return True |
| 699 | |
Behdad Esfahbod | fd3923e | 2013-07-22 12:48:17 -0400 | [diff] [blame] | 700 | @add_method(fontTools.ttLib.getTableClass('GDEF')) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 701 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | fd3923e | 2013-07-22 12:48:17 -0400 | [diff] [blame] | 702 | table = self.table |
| 703 | if table.LigCaretList: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 704 | indices = table.LigCaretList.Coverage.subset_glyphs (glyphs) |
Behdad Esfahbod | fd3923e | 2013-07-22 12:48:17 -0400 | [diff] [blame] | 705 | table.LigCaretList.LigGlyph = [table.LigCaretList.LigGlyph[i] for i in indices] |
| 706 | table.LigCaretList.LigGlyphCount = len (table.LigCaretList.LigGlyph) |
| 707 | if not table.LigCaretList.LigGlyphCount: |
| 708 | table.LigCaretList = None |
| 709 | if table.MarkAttachClassDef: |
| 710 | table.MarkAttachClassDef.classDefs = {g:v for g,v in table.MarkAttachClassDef.classDefs.items() if g in glyphs} |
| 711 | if not table.MarkAttachClassDef.classDefs: |
| 712 | table.MarkAttachClassDef = None |
| 713 | if table.GlyphClassDef: |
| 714 | table.GlyphClassDef.classDefs = {g:v for g,v in table.GlyphClassDef.classDefs.items() if g in glyphs} |
| 715 | if not table.GlyphClassDef.classDefs: |
| 716 | table.GlyphClassDef = None |
| 717 | if table.AttachList: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 718 | indices = table.AttachList.Coverage.subset_glyphs (glyphs) |
Behdad Esfahbod | fd3923e | 2013-07-22 12:48:17 -0400 | [diff] [blame] | 719 | table.AttachList.AttachPoint = [table.AttachList.AttachPoint[i] for i in indices] |
| 720 | table.AttachList.GlyphCount = len (table.AttachList.AttachPoint) |
| 721 | if not table.AttachList.GlyphCount: |
| 722 | table.AttachList = None |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 723 | return bool (table.LigCaretList or table.MarkAttachClassDef or table.GlyphClassDef or table.AttachList) |
Behdad Esfahbod | efb984a | 2013-07-21 22:26:16 -0400 | [diff] [blame] | 724 | |
Behdad Esfahbod | fd3923e | 2013-07-22 12:48:17 -0400 | [diff] [blame] | 725 | @add_method(fontTools.ttLib.getTableClass('kern')) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 726 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 5270ec4 | 2013-07-22 12:57:02 -0400 | [diff] [blame] | 727 | for t in self.kernTables: |
| 728 | t.kernTable = {(a,b):v for ((a,b),v) in t.kernTable.items() if a in glyphs and b in glyphs} |
| 729 | self.kernTables = [t for t in self.kernTables if t.kernTable] |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 730 | return bool (self.kernTables) |
Behdad Esfahbod | efb984a | 2013-07-21 22:26:16 -0400 | [diff] [blame] | 731 | |
Behdad Esfahbod | 75e14fc | 2013-07-22 14:49:54 -0400 | [diff] [blame] | 732 | @add_method(fontTools.ttLib.getTableClass('hmtx'), fontTools.ttLib.getTableClass('vmtx')) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 733 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 734 | self.metrics = {g:v for g,v in self.metrics.items() if g in glyphs} |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 735 | return bool (self.metrics) |
Behdad Esfahbod | c716044 | 2013-07-22 14:29:08 -0400 | [diff] [blame] | 736 | |
Behdad Esfahbod | 75e14fc | 2013-07-22 14:49:54 -0400 | [diff] [blame] | 737 | @add_method(fontTools.ttLib.getTableClass('hdmx')) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 738 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 739 | self.hdmx = {s:{g:v for g,v in l.items() if g in glyphs} for (s,l) in self.hdmx.items()} |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 740 | return bool (self.hdmx) |
Behdad Esfahbod | 75e14fc | 2013-07-22 14:49:54 -0400 | [diff] [blame] | 741 | |
Behdad Esfahbod | e45d6af | 2013-07-22 15:29:17 -0400 | [diff] [blame] | 742 | @add_method(fontTools.ttLib.getTableClass('VORG')) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 743 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 744 | self.VOriginRecords = {g:v for g,v in self.VOriginRecords.items() if g in glyphs} |
Behdad Esfahbod | e45d6af | 2013-07-22 15:29:17 -0400 | [diff] [blame] | 745 | self.numVertOriginYMetrics = len (self.VOriginRecords) |
| 746 | return True # Never drop; has default metrics |
| 747 | |
Behdad Esfahbod | 8c646f6 | 2013-07-22 15:06:23 -0400 | [diff] [blame] | 748 | @add_method(fontTools.ttLib.getTableClass('post')) |
Behdad Esfahbod | 8c486d8 | 2013-07-24 13:34:47 -0400 | [diff] [blame] | 749 | def prune_pre_subset (self, options): |
Behdad Esfahbod | 4091ec6 | 2013-07-23 13:02:51 -0400 | [diff] [blame] | 750 | if not options['glyph-names']: |
Behdad Esfahbod | 4264824 | 2013-07-23 12:56:06 -0400 | [diff] [blame] | 751 | self.formatType = 3.0 |
| 752 | return True |
| 753 | |
| 754 | @add_method(fontTools.ttLib.getTableClass('post')) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 755 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 4264824 | 2013-07-23 12:56:06 -0400 | [diff] [blame] | 756 | self.extraNames = [] # This seems to do it |
Behdad Esfahbod | c9dec9d | 2013-07-23 10:28:47 -0400 | [diff] [blame] | 757 | return True |
Behdad Esfahbod | 653e974 | 2013-07-22 15:17:12 -0400 | [diff] [blame] | 758 | |
Behdad Esfahbod | 4cf7a80 | 2013-07-24 16:08:35 -0400 | [diff] [blame^] | 759 | # Copied from _g_l_y_f.py |
| 760 | ARG_1_AND_2_ARE_WORDS = 0x0001 # if set args are words otherwise they are bytes |
| 761 | ARGS_ARE_XY_VALUES = 0x0002 # if set args are xy values, otherwise they are points |
| 762 | ROUND_XY_TO_GRID = 0x0004 # for the xy values if above is true |
| 763 | WE_HAVE_A_SCALE = 0x0008 # Sx = Sy, otherwise scale == 1.0 |
| 764 | NON_OVERLAPPING = 0x0010 # set to same value for all components (obsolete!) |
| 765 | MORE_COMPONENTS = 0x0020 # indicates at least one more glyph after this one |
| 766 | WE_HAVE_AN_X_AND_Y_SCALE = 0x0040 # Sx, Sy |
| 767 | WE_HAVE_A_TWO_BY_TWO = 0x0080 # t00, t01, t10, t11 |
| 768 | WE_HAVE_INSTRUCTIONS = 0x0100 # instructions follow |
| 769 | USE_MY_METRICS = 0x0200 # apply these metrics to parent glyph |
| 770 | OVERLAP_COMPOUND = 0x0400 # used by Apple in GX fonts |
| 771 | SCALED_COMPONENT_OFFSET = 0x0800 # composite designed to have the component offset scaled (designed for Apple) |
| 772 | UNSCALED_COMPONENT_OFFSET = 0x1000 # composite designed not to have the component offset scaled (designed for MS) |
| 773 | |
| 774 | @add_method(fontTools.ttLib.getTableModule('glyf').Glyph) |
| 775 | def getComponentNamesFast (self, glyfTable): |
| 776 | if struct.unpack(">h", self.data[:2])[0] >= 0: |
| 777 | return [] # Not composite |
| 778 | data = self.data |
| 779 | i = 10 |
| 780 | components = [] |
| 781 | more = 1 |
| 782 | while more: |
| 783 | flags, glyphID = struct.unpack(">HH", data[i:i+4]) |
| 784 | i += 4 |
| 785 | flags = int(flags) |
| 786 | components.append (glyfTable.getGlyphName (int (glyphID))) |
| 787 | |
| 788 | if flags & ARG_1_AND_2_ARE_WORDS: i += 4 |
| 789 | else: i += 2 |
| 790 | if flags & WE_HAVE_A_SCALE: i += 2 |
| 791 | elif flags & WE_HAVE_AN_X_AND_Y_SCALE: i += 4 |
| 792 | elif flags & WE_HAVE_A_TWO_BY_TWO: i += 8 |
| 793 | more = flags & MORE_COMPONENTS |
| 794 | return components |
| 795 | |
| 796 | @add_method(fontTools.ttLib.getTableModule('glyf').Glyph) |
| 797 | def remapComponentsFast (self, indices): |
| 798 | if struct.unpack(">h", self.data[:2])[0] >= 0: |
| 799 | return # Not composite |
| 800 | data = bytearray (self.data) |
| 801 | i = 10 |
| 802 | more = 1 |
| 803 | while more: |
| 804 | flags = (data[i] << 8) | data[i+1] |
| 805 | glyphID = (data[i+2] << 8) | data[i+3] |
| 806 | # Remap |
| 807 | glyphID = indices.index (glyphID) |
| 808 | data[i+2] = glyphID >> 8 |
| 809 | data[i+3] = glyphID & 0xFF |
| 810 | i += 4 |
| 811 | flags = int(flags) |
| 812 | |
| 813 | if flags & ARG_1_AND_2_ARE_WORDS: i += 4 |
| 814 | else: i += 2 |
| 815 | if flags & WE_HAVE_A_SCALE: i += 2 |
| 816 | elif flags & WE_HAVE_AN_X_AND_Y_SCALE: i += 4 |
| 817 | elif flags & WE_HAVE_A_TWO_BY_TWO: i += 8 |
| 818 | more = flags & MORE_COMPONENTS |
| 819 | self.data = str (data) |
| 820 | |
Behdad Esfahbod | 861d915 | 2013-07-22 16:47:24 -0400 | [diff] [blame] | 821 | @add_method(fontTools.ttLib.getTableClass('glyf')) |
Behdad Esfahbod | abb50a1 | 2013-07-23 12:58:37 -0400 | [diff] [blame] | 822 | def closure_glyphs (self, glyphs): |
| 823 | glyphs = unique_sorted (glyphs) |
| 824 | decompose = glyphs |
| 825 | # I don't know if component glyphs can be composite themselves. |
| 826 | # We handle them anyway. |
| 827 | while True: |
| 828 | components = [] |
| 829 | for g in decompose: |
Behdad Esfahbod | 4cf7a80 | 2013-07-24 16:08:35 -0400 | [diff] [blame^] | 830 | if g not in self.glyphs: |
Behdad Esfahbod | f8c20e4 | 2013-07-23 23:13:23 -0400 | [diff] [blame] | 831 | continue |
Behdad Esfahbod | 4cf7a80 | 2013-07-24 16:08:35 -0400 | [diff] [blame^] | 832 | gl = self.glyphs[g] |
| 833 | if hasattr (gl, "data"): |
| 834 | for c in gl.getComponentNamesFast (self): |
| 835 | if c not in glyphs: |
| 836 | components.append (c) |
| 837 | else: |
| 838 | # TTX seems to expand gid0..3 always |
| 839 | if gl.isComposite (): |
| 840 | for c in gl.components: |
| 841 | if c.glyphName not in glyphs: |
| 842 | components.append (c.glyphName) |
Behdad Esfahbod | abb50a1 | 2013-07-23 12:58:37 -0400 | [diff] [blame] | 843 | components = [c for c in components if c not in glyphs] |
| 844 | if not components: |
| 845 | return glyphs |
| 846 | decompose = unique_sorted (components) |
| 847 | glyphs.extend (components) |
| 848 | |
| 849 | @add_method(fontTools.ttLib.getTableClass('glyf')) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 850 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 851 | self.glyphs = {g:v for g,v in self.glyphs.items() if g in glyphs} |
Behdad Esfahbod | 4cf7a80 | 2013-07-24 16:08:35 -0400 | [diff] [blame^] | 852 | indices = [i for i,g in enumerate (self.glyphOrder) if g in glyphs] |
| 853 | for v in self.glyphs.values (): |
| 854 | if hasattr (v, "data"): |
| 855 | v.remapComponentsFast (indices) |
| 856 | else: |
| 857 | pass # No need |
Behdad Esfahbod | 861d915 | 2013-07-22 16:47:24 -0400 | [diff] [blame] | 858 | self.glyphOrder = [g for g in self.glyphOrder if g in glyphs] |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 859 | return bool (self.glyphs) |
Behdad Esfahbod | 861d915 | 2013-07-22 16:47:24 -0400 | [diff] [blame] | 860 | |
Behdad Esfahbod | ed98c61 | 2013-07-23 12:37:41 -0400 | [diff] [blame] | 861 | @add_method(fontTools.ttLib.getTableClass('glyf')) |
Behdad Esfahbod | d7b6f8f | 2013-07-23 12:46:52 -0400 | [diff] [blame] | 862 | def prune_post_subset (self, options): |
Behdad Esfahbod | 4091ec6 | 2013-07-23 13:02:51 -0400 | [diff] [blame] | 863 | if not options['hinting']: |
Behdad Esfahbod | ed98c61 | 2013-07-23 12:37:41 -0400 | [diff] [blame] | 864 | for g in self.glyphs.values (): |
Behdad Esfahbod | d7b6f8f | 2013-07-23 12:46:52 -0400 | [diff] [blame] | 865 | g.expand (self) |
| 866 | g.program = fontTools.ttLib.tables.ttProgram.Program() |
| 867 | g.program.fromBytecode([]) |
Behdad Esfahbod | ed98c61 | 2013-07-23 12:37:41 -0400 | [diff] [blame] | 868 | return True |
| 869 | |
Behdad Esfahbod | 2b677c8 | 2013-07-23 13:37:13 -0400 | [diff] [blame] | 870 | @add_method(fontTools.ttLib.getTableClass('CFF ')) |
| 871 | def subset_glyphs (self, glyphs): |
| 872 | assert 0, "unimplemented" |
| 873 | |
Behdad Esfahbod | 653e974 | 2013-07-22 15:17:12 -0400 | [diff] [blame] | 874 | @add_method(fontTools.ttLib.getTableClass('cmap')) |
Behdad Esfahbod | abb50a1 | 2013-07-23 12:58:37 -0400 | [diff] [blame] | 875 | def prune_pre_subset (self, options): |
Behdad Esfahbod | de4a15b | 2013-07-23 13:05:42 -0400 | [diff] [blame] | 876 | if not options['legacy-cmap']: |
| 877 | # Drop non-Unicode / non-Symbol cmaps |
| 878 | self.tables = [t for t in self.tables if t.platformID == 3 and t.platEncID in [0, 1, 10]] |
| 879 | if not options['symbol-cmap']: |
| 880 | self.tables = [t for t in self.tables if t.platformID == 3 and t.platEncID in [1, 10]] |
Behdad Esfahbod | abb50a1 | 2013-07-23 12:58:37 -0400 | [diff] [blame] | 881 | # TODO Only keep one subtable? |
Behdad Esfahbod | abb50a1 | 2013-07-23 12:58:37 -0400 | [diff] [blame] | 882 | # For now, drop format=0 which can't be subset_glyphs easily? |
| 883 | self.tables = [t for t in self.tables if t.format != 0] |
| 884 | return bool (self.tables) |
| 885 | |
| 886 | @add_method(fontTools.ttLib.getTableClass('cmap')) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 887 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 653e974 | 2013-07-22 15:17:12 -0400 | [diff] [blame] | 888 | for t in self.tables: |
Behdad Esfahbod | 9453a36 | 2013-07-22 16:21:24 -0400 | [diff] [blame] | 889 | # For reasons I don't understand I need this here |
| 890 | # to force decompilation of the cmap format 14. |
| 891 | try: |
| 892 | getattr (t, "asdf") |
| 893 | except AttributeError: |
| 894 | pass |
Behdad Esfahbod | b13d790 | 2013-07-22 16:01:15 -0400 | [diff] [blame] | 895 | if t.format == 14: |
Behdad Esfahbod | 9453a36 | 2013-07-22 16:21:24 -0400 | [diff] [blame] | 896 | # XXX We drop all the default-UVS mappings (g==None) |
Behdad Esfahbod | b13d790 | 2013-07-22 16:01:15 -0400 | [diff] [blame] | 897 | t.uvsDict = {v:[(u,g) for (u,g) in l if g in glyphs] for (v,l) in t.uvsDict.items()} |
| 898 | t.uvsDict = {v:l for (v,l) in t.uvsDict.items() if l} |
| 899 | else: |
| 900 | t.cmap = {u:g for (u,g) in t.cmap.items() if g in glyphs} |
| 901 | self.tables = [t for t in self.tables if (t.cmap if t.format != 14 else t.uvsDict)] |
Behdad Esfahbod | 7e4bfc3 | 2013-07-22 18:47:32 -0400 | [diff] [blame] | 902 | # XXX Convert formats when needed |
Behdad Esfahbod | 61addb4 | 2013-07-23 11:03:49 -0400 | [diff] [blame] | 903 | return bool (self.tables) |
| 904 | |
Behdad Esfahbod | 61addb4 | 2013-07-23 11:03:49 -0400 | [diff] [blame] | 905 | @add_method(fontTools.ttLib.getTableClass('name')) |
Behdad Esfahbod | d7b6f8f | 2013-07-23 12:46:52 -0400 | [diff] [blame] | 906 | def prune_pre_subset (self, options): |
Behdad Esfahbod | 20faeb0 | 2013-07-23 13:19:03 -0400 | [diff] [blame] | 907 | if '*' not in options['name-IDs']: |
| 908 | self.names = [n for n in self.names if n.nameID in options['name-IDs']] |
| 909 | if not options['name-legacy']: |
| 910 | self.names = [n for n in self.names if n.platformID == 3 and n.platEncID == 1] |
| 911 | if '*' not in options['name-languages']: |
| 912 | self.names = [n for n in self.names if n.langID in options['name-languages']] |
| 913 | return True # Retain even if empty |
Behdad Esfahbod | 653e974 | 2013-07-22 15:17:12 -0400 | [diff] [blame] | 914 | |
Behdad Esfahbod | 8c646f6 | 2013-07-22 15:06:23 -0400 | [diff] [blame] | 915 | |
Behdad Esfahbod | bc25f16 | 2013-07-23 12:56:54 -0400 | [diff] [blame] | 916 | drop_tables_default = ['BASE', 'JSTF', 'DSIG', 'EBDT', 'EBLC', 'EBSC', 'PCLT', 'LTSH'] |
Behdad Esfahbod | 103a12f | 2013-07-23 15:08:39 -0400 | [diff] [blame] | 917 | drop_tables_default += ['Feat', 'Glat', 'Gloc', 'Silf', 'Sill'] # Graphite |
Behdad Esfahbod | 38e852c | 2013-07-23 16:56:50 -0400 | [diff] [blame] | 918 | drop_tables_default += ['CBLC', 'CBDT', 'sbix', 'COLR', 'CPAL'] # Color |
Behdad Esfahbod | ed98c61 | 2013-07-23 12:37:41 -0400 | [diff] [blame] | 919 | no_subset_tables = ['gasp', 'head', 'hhea', 'maxp', 'vhea', 'OS/2', 'loca', 'name', 'cvt ', 'fpgm', 'prep'] |
Behdad Esfahbod | bc25f16 | 2013-07-23 12:56:54 -0400 | [diff] [blame] | 920 | hinting_tables = ['cvt ', 'fpgm', 'prep', 'hdmx', 'VDMX'] |
Behdad Esfahbod | 29df046 | 2013-07-23 11:05:25 -0400 | [diff] [blame] | 921 | |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 922 | # Based on HarfBuzz shapers |
| 923 | layout_features_dict = { |
| 924 | # Default shaper |
| 925 | 'common': ['ccmp', 'liga', 'locl', 'mark', 'mkmk', 'rlig'], |
| 926 | 'horizontal': ['calt', 'clig', 'curs', 'kern', 'rclt'], |
| 927 | 'vertical': ['valt', 'vert', 'vkrn', 'vpal', 'vrt2'], |
| 928 | 'ltr': ['ltra', 'ltrm'], |
| 929 | 'rtl': ['rtla', 'rtlm'], |
| 930 | # Complex shapers |
| 931 | 'arabic': ['init', 'medi', 'fina', 'isol', 'med2', 'fin2', 'fin3'], |
| 932 | 'hangul': ['ljmo', 'vjmo', 'tjmo'], |
| 933 | 'tibetal': ['abvs', 'blws', 'abvm', 'blwm'], |
| 934 | 'indic': ['nukt', 'akhn', 'rphf', 'rkrf', 'pref', 'blwf', 'half', 'abvf', 'pstf', 'cfar', 'vatu', 'cjct', |
| 935 | 'init', 'pres', 'abvs', 'blws', 'psts', 'haln', 'dist', 'abvm', 'blwm'], |
| 936 | } |
| 937 | layout_features_all = unique_sorted (sum (layout_features_dict.values (), [])) |
| 938 | |
Behdad Esfahbod | 4091ec6 | 2013-07-23 13:02:51 -0400 | [diff] [blame] | 939 | options_default = { |
Behdad Esfahbod | de4a15b | 2013-07-23 13:05:42 -0400 | [diff] [blame] | 940 | 'drop-tables': drop_tables_default, |
Behdad Esfahbod | 4091ec6 | 2013-07-23 13:02:51 -0400 | [diff] [blame] | 941 | 'layout-features': layout_features_all, |
| 942 | 'hinting': False, |
| 943 | 'glyph-names': False, |
Behdad Esfahbod | de4a15b | 2013-07-23 13:05:42 -0400 | [diff] [blame] | 944 | 'legacy-cmap': False, |
| 945 | 'symbol-cmap': False, |
Behdad Esfahbod | 20faeb0 | 2013-07-23 13:19:03 -0400 | [diff] [blame] | 946 | 'name-IDs': [1, 2], # Family and Style |
| 947 | 'name-legacy': False, |
| 948 | 'name-languages': [0x0409], # English |
Behdad Esfahbod | e30ed12 | 2013-07-23 21:08:29 -0400 | [diff] [blame] | 949 | 'mandatory-glyphs': True, # First four for TrueType, .notdef for CFF |
Behdad Esfahbod | 4091ec6 | 2013-07-23 13:02:51 -0400 | [diff] [blame] | 950 | } |
| 951 | |
Behdad Esfahbod | 29df046 | 2013-07-23 11:05:25 -0400 | [diff] [blame] | 952 | |
Behdad Esfahbod | 75e14fc | 2013-07-22 14:49:54 -0400 | [diff] [blame] | 953 | # TODO OS/2 ulUnicodeRange / ulCodePageRange? |
Behdad Esfahbod | f71267b | 2013-07-23 12:59:13 -0400 | [diff] [blame] | 954 | # TODO Drop unneeded GSUB/GPOS Script/LangSys entries |
Behdad Esfahbod | 398d389 | 2013-07-23 15:29:40 -0400 | [diff] [blame] | 955 | # TODO Avoid recursing too much |
Behdad Esfahbod | e94aa0e | 2013-07-23 13:22:04 -0400 | [diff] [blame] | 956 | # TODO Text direction considerations |
| 957 | # TODO Text script / language considerations |
Behdad Esfahbod | 38e852c | 2013-07-23 16:56:50 -0400 | [diff] [blame] | 958 | # TODO Drop unknown tables |
Behdad Esfahbod | 56ebd04 | 2013-07-22 13:02:24 -0400 | [diff] [blame] | 959 | |
Behdad Esfahbod | 8c486d8 | 2013-07-24 13:34:47 -0400 | [diff] [blame] | 960 | |
| 961 | def main (): |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 962 | |
Behdad Esfahbod | b70b498 | 2013-07-23 11:38:26 -0400 | [diff] [blame] | 963 | import sys, time |
Behdad Esfahbod | 8c486d8 | 2013-07-24 13:34:47 -0400 | [diff] [blame] | 964 | global last_time |
Behdad Esfahbod | b70b498 | 2013-07-23 11:38:26 -0400 | [diff] [blame] | 965 | |
| 966 | start_time = time.time () |
| 967 | last_time = start_time |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 968 | |
Behdad Esfahbod | 4ae8171 | 2013-07-22 11:57:13 -0400 | [diff] [blame] | 969 | verbose = False |
| 970 | if "--verbose" in sys.argv: |
| 971 | verbose = True |
| 972 | sys.argv.remove ("--verbose") |
Behdad Esfahbod | 350a527 | 2013-07-22 12:02:16 -0400 | [diff] [blame] | 973 | xml = False |
| 974 | if "--xml" in sys.argv: |
| 975 | xml = True |
| 976 | sys.argv.remove ("--xml") |
Behdad Esfahbod | b70b498 | 2013-07-23 11:38:26 -0400 | [diff] [blame] | 977 | timing = False |
| 978 | if "--timing" in sys.argv: |
| 979 | timing = True |
| 980 | sys.argv.remove ("--timing") |
| 981 | |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 982 | options = options_default.copy () |
| 983 | |
Behdad Esfahbod | b70b498 | 2013-07-23 11:38:26 -0400 | [diff] [blame] | 984 | def lapse (what): |
| 985 | if not timing: |
| 986 | return |
| 987 | global last_time |
| 988 | new_time = time.time () |
| 989 | print "Took %0.3fs to %s" % (new_time - last_time, what) |
| 990 | last_time = new_time |
Behdad Esfahbod | 4ae8171 | 2013-07-22 11:57:13 -0400 | [diff] [blame] | 991 | |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 992 | if len (sys.argv) < 3: |
| 993 | print >>sys.stderr, "usage: pyotlss.py font-file glyph..." |
| 994 | sys.exit (1) |
| 995 | |
| 996 | fontfile = sys.argv[1] |
| 997 | glyphs = sys.argv[2:] |
| 998 | |
| 999 | font = fontTools.ttx.TTFont (fontfile) |
Behdad Esfahbod | 0f86ce9 | 2013-07-22 17:30:31 -0400 | [diff] [blame] | 1000 | font.disassembleInstructions = False |
Behdad Esfahbod | b70b498 | 2013-07-23 11:38:26 -0400 | [diff] [blame] | 1001 | lapse ("load font") |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 1002 | |
Behdad Esfahbod | e30ed12 | 2013-07-23 21:08:29 -0400 | [diff] [blame] | 1003 | if options["mandatory-glyphs"]: |
| 1004 | # Always include .notdef; anything else? |
| 1005 | if 'glyf' in font: |
| 1006 | glyphs.extend (['gid0', 'gid1', 'gid2', 'gid3']) |
| 1007 | if verbose: |
| 1008 | print "Added first four glyphs to subset" |
| 1009 | else: |
| 1010 | glyphs.append ('.notdef') |
| 1011 | if verbose: |
| 1012 | print "Added .notdef glyph to subset" |
| 1013 | |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 1014 | names = font.getGlyphNames() |
Behdad Esfahbod | 9bd59c4 | 2013-07-23 21:19:49 -0400 | [diff] [blame] | 1015 | lapse ("loading glyph names") |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 1016 | # Convert to glyph names |
Behdad Esfahbod | 3f4b97e | 2013-07-23 15:04:25 -0400 | [diff] [blame] | 1017 | glyph_names = [] |
Behdad Esfahbod | e36061e | 2013-07-23 15:13:00 -0400 | [diff] [blame] | 1018 | cmap_tables = None |
Behdad Esfahbod | 3f4b97e | 2013-07-23 15:04:25 -0400 | [diff] [blame] | 1019 | for g in glyphs: |
| 1020 | if g in names: |
| 1021 | glyph_names.append (g) |
| 1022 | continue |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 1023 | if g.startswith ('uni') and len (g) > 3: |
Behdad Esfahbod | e36061e | 2013-07-23 15:13:00 -0400 | [diff] [blame] | 1024 | if not cmap_tables: |
| 1025 | cmap = font['cmap'] |
| 1026 | cmap_tables = [t for t in cmap.tables if t.platformID == 3 and t.platEncID in [1, 10]] |
| 1027 | del cmap |
Behdad Esfahbod | 3f4b97e | 2013-07-23 15:04:25 -0400 | [diff] [blame] | 1028 | found = False |
Behdad Esfahbod | e36061e | 2013-07-23 15:13:00 -0400 | [diff] [blame] | 1029 | u = int (g[3:], 16) |
| 1030 | for table in cmap_tables: |
Behdad Esfahbod | 3f4b97e | 2013-07-23 15:04:25 -0400 | [diff] [blame] | 1031 | if u in table.cmap: |
| 1032 | glyph_names.append (table.cmap[u]) |
| 1033 | found = True |
| 1034 | break |
| 1035 | if not found: |
Behdad Esfahbod | e36061e | 2013-07-23 15:13:00 -0400 | [diff] [blame] | 1036 | if verbose: |
| 1037 | print ("No glyph for Unicode value %s; skipping." % g) |
Behdad Esfahbod | 3f4b97e | 2013-07-23 15:04:25 -0400 | [diff] [blame] | 1038 | continue |
Behdad Esfahbod | e30ed12 | 2013-07-23 21:08:29 -0400 | [diff] [blame] | 1039 | if g.startswith ('gid') or g.startswith ('glyph'): |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 1040 | if g.startswith ('gid') and len (g) > 3: |
Behdad Esfahbod | e30ed12 | 2013-07-23 21:08:29 -0400 | [diff] [blame] | 1041 | g = g[3:] |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 1042 | elif g.startswith ('glyph') and len (g) > 5: |
Behdad Esfahbod | e30ed12 | 2013-07-23 21:08:29 -0400 | [diff] [blame] | 1043 | g = g[5:] |
| 1044 | try: |
| 1045 | glyph_names.append (font.getGlyphName (int (g), requireReal=1)) |
| 1046 | except ValueError: |
| 1047 | raise Exception ("Invalid glyph identifier %s" % g) |
| 1048 | continue |
| 1049 | raise Exception ("Invalid glyph identifier %s" % g) |
Behdad Esfahbod | e36061e | 2013-07-23 15:13:00 -0400 | [diff] [blame] | 1050 | del cmap_tables |
Behdad Esfahbod | e30ed12 | 2013-07-23 21:08:29 -0400 | [diff] [blame] | 1051 | glyphs = unique_sorted (glyph_names) |
Behdad Esfahbod | 3f4b97e | 2013-07-23 15:04:25 -0400 | [diff] [blame] | 1052 | del glyph_names |
Behdad Esfahbod | b70b498 | 2013-07-23 11:38:26 -0400 | [diff] [blame] | 1053 | lapse ("compile glyph list") |
Behdad Esfahbod | 240d7e7 | 2013-07-23 23:12:06 -0400 | [diff] [blame] | 1054 | if verbose: |
| 1055 | print "Glyphs:", glyphs |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 1056 | |
Behdad Esfahbod | de71dca | 2013-07-24 12:40:54 -0400 | [diff] [blame] | 1057 | |
| 1058 | for tag in font.keys(): |
| 1059 | if tag == 'GlyphOrder': continue |
| 1060 | |
| 1061 | if tag in options['drop-tables'] or \ |
Behdad Esfahbod | c0d5959 | 2013-07-24 14:41:47 -0400 | [diff] [blame] | 1062 | (tag in hinting_tables and not options['hinting']): |
Behdad Esfahbod | de71dca | 2013-07-24 12:40:54 -0400 | [diff] [blame] | 1063 | if verbose: |
| 1064 | print tag, "dropped." |
| 1065 | del font[tag] |
| 1066 | continue |
| 1067 | |
| 1068 | clazz = fontTools.ttLib.getTableClass(tag) |
| 1069 | |
| 1070 | if hasattr (clazz, 'prune_pre_subset'): |
| 1071 | table = font[tag] |
| 1072 | retain = table.prune_pre_subset (options) |
| 1073 | lapse ("prune '%s'" % tag) |
| 1074 | if not retain: |
| 1075 | if verbose: |
| 1076 | print tag, "pruned to empty; dropped." |
| 1077 | del font[tag] |
| 1078 | continue |
| 1079 | else: |
| 1080 | if verbose: |
| 1081 | print tag, "pruned." |
| 1082 | |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 1083 | glyphs_requested = glyphs |
| 1084 | if 'GSUB' in font: |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 1085 | if verbose: |
Behdad Esfahbod | e30ed12 | 2013-07-23 21:08:29 -0400 | [diff] [blame] | 1086 | print "Closing glyph list over 'GSUB': %d glyphs before" % len (glyphs) |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 1087 | glyphs = font['GSUB'].closure_glyphs (glyphs) |
| 1088 | if verbose: |
Behdad Esfahbod | e30ed12 | 2013-07-23 21:08:29 -0400 | [diff] [blame] | 1089 | print "Closed glyph list over 'GSUB': %d glyphs after" % len (glyphs) |
Behdad Esfahbod | 240d7e7 | 2013-07-23 23:12:06 -0400 | [diff] [blame] | 1090 | print "Glyphs:", glyphs |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 1091 | lapse ("close glyph list over 'GSUB'") |
| 1092 | glyphs_gsubed = glyphs |
| 1093 | |
Behdad Esfahbod | 2a784ac | 2013-07-22 17:00:36 -0400 | [diff] [blame] | 1094 | # Close over composite glyphs |
| 1095 | if 'glyf' in font: |
Behdad Esfahbod | 0fe6a51 | 2013-07-23 11:17:35 -0400 | [diff] [blame] | 1096 | if verbose: |
Behdad Esfahbod | e30ed12 | 2013-07-23 21:08:29 -0400 | [diff] [blame] | 1097 | print "Closing glyph list over 'glyf': %d glyphs before" % len (glyphs) |
Behdad Esfahbod | 240d7e7 | 2013-07-23 23:12:06 -0400 | [diff] [blame] | 1098 | print "Glyphs:", glyphs |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 1099 | glyphs = font['glyf'].closure_glyphs (glyphs) |
Behdad Esfahbod | 0fe6a51 | 2013-07-23 11:17:35 -0400 | [diff] [blame] | 1100 | if verbose: |
Behdad Esfahbod | e30ed12 | 2013-07-23 21:08:29 -0400 | [diff] [blame] | 1101 | print "Closed glyph list over 'glyf': %d glyphs after" % len (glyphs) |
Behdad Esfahbod | 240d7e7 | 2013-07-23 23:12:06 -0400 | [diff] [blame] | 1102 | print "Glyphs:", glyphs |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 1103 | lapse ("close glyph list over 'glyf'") |
Behdad Esfahbod | 0fe6a51 | 2013-07-23 11:17:35 -0400 | [diff] [blame] | 1104 | else: |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 1105 | glyphs = glyphs |
| 1106 | glyphs_glyfed = glyphs |
| 1107 | glyphs_closed = glyphs |
Behdad Esfahbod | 0fe6a51 | 2013-07-23 11:17:35 -0400 | [diff] [blame] | 1108 | del glyphs |
| 1109 | |
Behdad Esfahbod | c9dec9d | 2013-07-23 10:28:47 -0400 | [diff] [blame] | 1110 | if verbose: |
Behdad Esfahbod | 0fe6a51 | 2013-07-23 11:17:35 -0400 | [diff] [blame] | 1111 | print "Retaining %d glyphs: " % len (glyphs_closed) |
Behdad Esfahbod | 2a784ac | 2013-07-22 17:00:36 -0400 | [diff] [blame] | 1112 | |
Behdad Esfahbod | 8842ce2 | 2013-07-22 13:01:33 -0400 | [diff] [blame] | 1113 | for tag in font.keys(): |
Behdad Esfahbod | de71dca | 2013-07-24 12:40:54 -0400 | [diff] [blame] | 1114 | if tag == 'GlyphOrder': continue |
Behdad Esfahbod | 4e214e4 | 2013-07-22 13:13:49 -0400 | [diff] [blame] | 1115 | |
Behdad Esfahbod | 8842ce2 | 2013-07-22 13:01:33 -0400 | [diff] [blame] | 1116 | clazz = fontTools.ttLib.getTableClass(tag) |
Behdad Esfahbod | 4e214e4 | 2013-07-22 13:13:49 -0400 | [diff] [blame] | 1117 | |
Behdad Esfahbod | 61addb4 | 2013-07-23 11:03:49 -0400 | [diff] [blame] | 1118 | if tag in no_subset_tables: |
| 1119 | if verbose: |
| 1120 | print tag, "subsetting not needed." |
Behdad Esfahbod | 96f4704 | 2013-07-23 12:21:34 -0400 | [diff] [blame] | 1121 | elif hasattr (clazz, 'subset_glyphs'): |
Behdad Esfahbod | 61addb4 | 2013-07-23 11:03:49 -0400 | [diff] [blame] | 1122 | table = font[tag] |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 1123 | if tag == 'cmap': # What else? |
Behdad Esfahbod | 0fe6a51 | 2013-07-23 11:17:35 -0400 | [diff] [blame] | 1124 | glyphs = glyphs_requested |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 1125 | elif tag in ['GSUB', 'GPOS', 'GDEF', 'cmap', 'kern', 'post']: # What else? |
| 1126 | glyphs = glyphs_gsubed |
Behdad Esfahbod | 0fe6a51 | 2013-07-23 11:17:35 -0400 | [diff] [blame] | 1127 | else: |
| 1128 | glyphs = glyphs_closed |
Behdad Esfahbod | b70b498 | 2013-07-23 11:38:26 -0400 | [diff] [blame] | 1129 | retain = table.subset_glyphs (glyphs) |
| 1130 | lapse ("subset '%s'" % tag) |
| 1131 | if not retain: |
Behdad Esfahbod | 61addb4 | 2013-07-23 11:03:49 -0400 | [diff] [blame] | 1132 | if verbose: |
| 1133 | print tag, "subsetted to empty; dropped." |
Behdad Esfahbod | 8b411f3 | 2013-07-23 11:24:20 -0400 | [diff] [blame] | 1134 | del font[tag] |
| 1135 | continue |
Behdad Esfahbod | 61addb4 | 2013-07-23 11:03:49 -0400 | [diff] [blame] | 1136 | else: |
| 1137 | if verbose: |
| 1138 | print tag, "subsetted." |
Behdad Esfahbod | 0fe6a51 | 2013-07-23 11:17:35 -0400 | [diff] [blame] | 1139 | del glyphs |
Behdad Esfahbod | 4ae8171 | 2013-07-22 11:57:13 -0400 | [diff] [blame] | 1140 | else: |
Behdad Esfahbod | 350a527 | 2013-07-22 12:02:16 -0400 | [diff] [blame] | 1141 | if verbose: |
Behdad Esfahbod | 61addb4 | 2013-07-23 11:03:49 -0400 | [diff] [blame] | 1142 | print tag, "NOT subset; don't know how to subset." |
| 1143 | continue |
| 1144 | |
Behdad Esfahbod | d7b6f8f | 2013-07-23 12:46:52 -0400 | [diff] [blame] | 1145 | if hasattr (clazz, 'prune_post_subset'): |
| 1146 | table = font[tag] |
| 1147 | retain = table.prune_post_subset (options) |
| 1148 | lapse ("prune '%s'" % tag) |
| 1149 | if not retain: |
| 1150 | if verbose: |
| 1151 | print tag, "pruned to empty; dropped." |
| 1152 | del font[tag] |
| 1153 | continue |
| 1154 | else: |
| 1155 | if verbose: |
| 1156 | print tag, "pruned." |
| 1157 | |
Behdad Esfahbod | c716044 | 2013-07-22 14:29:08 -0400 | [diff] [blame] | 1158 | glyphOrder = font.getGlyphOrder() |
Behdad Esfahbod | 0fe6a51 | 2013-07-23 11:17:35 -0400 | [diff] [blame] | 1159 | glyphOrder = [g for g in glyphOrder if g in glyphs_closed] |
Behdad Esfahbod | c716044 | 2013-07-22 14:29:08 -0400 | [diff] [blame] | 1160 | font.setGlyphOrder (glyphOrder) |
| 1161 | font._buildReverseGlyphOrderDict () |
Behdad Esfahbod | b70b498 | 2013-07-23 11:38:26 -0400 | [diff] [blame] | 1162 | lapse ("subset GlyphOrder") |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 1163 | |
Behdad Esfahbod | de71dca | 2013-07-24 12:40:54 -0400 | [diff] [blame] | 1164 | font.save (fontfile + '.subset') |
| 1165 | lapse ("compile and save font") |
| 1166 | |
| 1167 | last_time = start_time |
| 1168 | lapse ("make one with everything (TOTAL TIME)") |
| 1169 | |
Behdad Esfahbod | 0f86ce9 | 2013-07-22 17:30:31 -0400 | [diff] [blame] | 1170 | if xml: |
Behdad Esfahbod | de71dca | 2013-07-24 12:40:54 -0400 | [diff] [blame] | 1171 | import xmlWriter |
| 1172 | writer = xmlWriter.XMLWriter (sys.stdout) |
| 1173 | |
Behdad Esfahbod | 0f86ce9 | 2013-07-22 17:30:31 -0400 | [diff] [blame] | 1174 | for tag in font.keys(): |
| 1175 | writer.begintag (tag) |
| 1176 | writer.newline () |
| 1177 | font[tag].toXML(writer, font) |
| 1178 | writer.endtag (tag) |
| 1179 | writer.newline () |
Behdad Esfahbod | 8c486d8 | 2013-07-24 13:34:47 -0400 | [diff] [blame] | 1180 | |
| 1181 | if __name__ == '__main__': |
| 1182 | main () |