claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 1998-2004 David Turner and Werner Lemberg |
| 3 | * Copyright (C) 2006 Behdad Esfahbod |
| 4 | * |
| 5 | * This is part of HarfBuzz, an OpenType Layout engine library. |
| 6 | * |
| 7 | * Permission is hereby granted, without written agreement and without |
| 8 | * license or royalty fees, to use, copy, modify, and distribute this |
| 9 | * software and its documentation for any purpose, provided that the |
| 10 | * above copyright notice and the following two paragraphs appear in |
| 11 | * all copies of this software. |
| 12 | * |
| 13 | * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR |
| 14 | * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES |
| 15 | * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN |
| 16 | * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH |
| 17 | * DAMAGE. |
| 18 | * |
| 19 | * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, |
| 20 | * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| 21 | * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS |
| 22 | * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO |
| 23 | * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
| 24 | */ |
| 25 | |
| 26 | #ifndef HARFBUZZ_OPEN_H |
| 27 | #define HARFBUZZ_OPEN_H |
| 28 | |
| 29 | #include "harfbuzz-global.h" |
| 30 | |
| 31 | HB_BEGIN_HEADER |
| 32 | |
claireho | 57e6107 | 2010-11-11 10:57:27 -0800 | [diff] [blame] | 33 | #ifdef HB_USE_PACKED_STRUCTS |
| 34 | #pragma pack(push, 1) |
| 35 | #endif |
| 36 | |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 37 | /* Use this if a feature applies to all glyphs */ |
| 38 | #define HB_ALL_GLYPHS 0xFFFF |
| 39 | |
| 40 | #define HB_DEFAULT_LANGUAGE 0xFFFF |
| 41 | |
| 42 | #define HB_MAX_NESTING_LEVEL 100 |
| 43 | |
| 44 | |
| 45 | /* Script list related structures */ |
| 46 | |
| 47 | struct HB_LangSys_ |
| 48 | { |
claireho | 57e6107 | 2010-11-11 10:57:27 -0800 | [diff] [blame] | 49 | HB_UShort* FeatureIndex; /* array of Feature indices */ |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 50 | HB_UShort LookupOrderOffset; /* always 0 for TT Open 1.0 */ |
| 51 | HB_UShort ReqFeatureIndex; /* required FeatureIndex */ |
| 52 | HB_UShort FeatureCount; /* number of Feature indices */ |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 53 | }; |
| 54 | |
| 55 | typedef struct HB_LangSys_ HB_LangSys; |
| 56 | |
| 57 | |
| 58 | struct HB_LangSysRecord_ |
| 59 | { |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 60 | HB_LangSys LangSys; /* LangSys table */ |
claireho | 57e6107 | 2010-11-11 10:57:27 -0800 | [diff] [blame] | 61 | HB_UInt LangSysTag; /* LangSysTag identifier */ |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 62 | }; |
| 63 | |
| 64 | typedef struct HB_LangSysRecord_ HB_LangSysRecord; |
| 65 | |
| 66 | |
| 67 | struct HB_ScriptTable_ |
| 68 | { |
claireho | 57e6107 | 2010-11-11 10:57:27 -0800 | [diff] [blame] | 69 | HB_LangSysRecord* LangSysRecord; /* array of LangSysRecords */ |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 70 | HB_LangSys DefaultLangSys; /* DefaultLangSys table */ |
| 71 | HB_UShort LangSysCount; /* number of LangSysRecords */ |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 72 | }; |
| 73 | |
| 74 | typedef struct HB_ScriptTable_ HB_ScriptTable; |
| 75 | |
| 76 | |
| 77 | struct HB_ScriptRecord_ |
| 78 | { |
| 79 | HB_UInt ScriptTag; /* ScriptTag identifier */ |
| 80 | HB_ScriptTable Script; /* Script table */ |
| 81 | }; |
| 82 | |
| 83 | typedef struct HB_ScriptRecord_ HB_ScriptRecord; |
| 84 | |
| 85 | |
| 86 | struct HB_ScriptList_ |
| 87 | { |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 88 | HB_ScriptRecord* ScriptRecord; /* array of ScriptRecords */ |
claireho | 57e6107 | 2010-11-11 10:57:27 -0800 | [diff] [blame] | 89 | HB_UShort ScriptCount; /* number of ScriptRecords */ |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 90 | }; |
| 91 | |
| 92 | typedef struct HB_ScriptList_ HB_ScriptList; |
| 93 | |
| 94 | |
| 95 | /* Feature list related structures */ |
| 96 | |
| 97 | struct HB_Feature_ |
| 98 | { |
claireho | 57e6107 | 2010-11-11 10:57:27 -0800 | [diff] [blame] | 99 | HB_UShort* LookupListIndex; /* array of LookupList indices */ |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 100 | HB_UShort FeatureParams; /* always 0 for TT Open 1.0 */ |
| 101 | HB_UShort LookupListCount; /* number of LookupList indices */ |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 102 | }; |
| 103 | |
| 104 | typedef struct HB_Feature_ HB_Feature; |
| 105 | |
| 106 | |
| 107 | struct HB_FeatureRecord_ |
| 108 | { |
| 109 | HB_UInt FeatureTag; /* FeatureTag identifier */ |
| 110 | HB_Feature Feature; /* Feature table */ |
| 111 | }; |
| 112 | |
| 113 | typedef struct HB_FeatureRecord_ HB_FeatureRecord; |
| 114 | |
| 115 | |
| 116 | struct HB_FeatureList_ |
| 117 | { |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 118 | HB_UShort* ApplyOrder; /* order to apply features */ |
claireho | 57e6107 | 2010-11-11 10:57:27 -0800 | [diff] [blame] | 119 | HB_FeatureRecord* FeatureRecord; /* array of FeatureRecords */ |
| 120 | HB_UShort FeatureCount; /* number of FeatureRecords */ |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 121 | HB_UShort ApplyCount; /* number of elements in ApplyOrder */ |
| 122 | }; |
| 123 | |
| 124 | typedef struct HB_FeatureList_ HB_FeatureList; |
| 125 | |
| 126 | |
| 127 | /* Lookup list related structures */ |
| 128 | |
| 129 | typedef struct HB_SubTable_ HB_SubTable; |
| 130 | |
| 131 | |
| 132 | struct HB_Lookup_ |
| 133 | { |
claireho | 57e6107 | 2010-11-11 10:57:27 -0800 | [diff] [blame] | 134 | HB_SubTable* SubTable; /* array of SubTables */ |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 135 | HB_UShort LookupType; /* Lookup type */ |
| 136 | HB_UShort LookupFlag; /* Lookup qualifiers */ |
| 137 | HB_UShort SubTableCount; /* number of SubTables */ |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 138 | }; |
| 139 | |
| 140 | typedef struct HB_Lookup_ HB_Lookup; |
| 141 | |
| 142 | |
| 143 | /* The `Properties' field is not defined in the OpenType specification but |
| 144 | is needed for processing lookups. If properties[n] is > 0, the |
| 145 | functions HB_GSUB_Apply_String() resp. HB_GPOS_Apply_String() will |
| 146 | process Lookup[n] for glyphs which have the specific bit not set in |
| 147 | the `properties' field of the input string object. */ |
| 148 | |
| 149 | struct HB_LookupList_ |
| 150 | { |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 151 | HB_Lookup* Lookup; /* array of Lookup records */ |
| 152 | HB_UInt* Properties; /* array of flags */ |
claireho | 57e6107 | 2010-11-11 10:57:27 -0800 | [diff] [blame] | 153 | HB_UShort LookupCount; /* number of Lookups */ |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 154 | }; |
| 155 | |
| 156 | typedef struct HB_LookupList_ HB_LookupList; |
| 157 | |
| 158 | |
| 159 | /* Possible LookupFlag bit masks. `HB_LOOKUP_FLAG_IGNORE_SPECIAL_MARKS' comes from the |
| 160 | OpenType 1.2 specification; HB_LOOKUP_FLAG_RIGHT_TO_LEFT has been (re)introduced in |
| 161 | OpenType 1.3 -- if set, the last glyph in a cursive attachment |
| 162 | sequence has to be positioned on the baseline -- regardless of the |
| 163 | writing direction. */ |
| 164 | |
| 165 | #define HB_LOOKUP_FLAG_RIGHT_TO_LEFT 0x0001 |
| 166 | #define HB_LOOKUP_FLAG_IGNORE_BASE_GLYPHS 0x0002 |
| 167 | #define HB_LOOKUP_FLAG_IGNORE_LIGATURES 0x0004 |
| 168 | #define HB_LOOKUP_FLAG_IGNORE_MARKS 0x0008 |
| 169 | #define HB_LOOKUP_FLAG_IGNORE_SPECIAL_MARKS 0xFF00 |
| 170 | |
| 171 | |
| 172 | struct HB_CoverageFormat1_ |
| 173 | { |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 174 | HB_UShort* GlyphArray; /* array of glyph IDs */ |
claireho | 57e6107 | 2010-11-11 10:57:27 -0800 | [diff] [blame] | 175 | HB_UShort GlyphCount; /* number of glyphs in GlyphArray */ |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 176 | }; |
| 177 | |
| 178 | typedef struct HB_CoverageFormat1_ HB_CoverageFormat1; |
| 179 | |
| 180 | |
| 181 | struct HB_RangeRecord_ |
| 182 | { |
| 183 | HB_UShort Start; /* first glyph ID in the range */ |
| 184 | HB_UShort End; /* last glyph ID in the range */ |
| 185 | HB_UShort StartCoverageIndex; /* coverage index of first |
| 186 | glyph ID in the range */ |
| 187 | }; |
| 188 | |
| 189 | typedef struct HB_RangeRecord_ HB_RangeRecord; |
| 190 | |
| 191 | |
| 192 | struct HB_CoverageFormat2_ |
| 193 | { |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 194 | HB_RangeRecord* RangeRecord; /* array of RangeRecords */ |
claireho | 57e6107 | 2010-11-11 10:57:27 -0800 | [diff] [blame] | 195 | HB_UShort RangeCount; /* number of RangeRecords */ |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 196 | }; |
| 197 | |
| 198 | typedef struct HB_CoverageFormat2_ HB_CoverageFormat2; |
| 199 | |
| 200 | |
| 201 | struct HB_Coverage_ |
| 202 | { |
claireho | 57e6107 | 2010-11-11 10:57:27 -0800 | [diff] [blame] | 203 | HB_Byte CoverageFormat; /* 1 or 2 */ |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 204 | |
| 205 | union |
| 206 | { |
| 207 | HB_CoverageFormat1 cf1; |
| 208 | HB_CoverageFormat2 cf2; |
| 209 | } cf; |
| 210 | }; |
| 211 | |
| 212 | typedef struct HB_Coverage_ HB_Coverage; |
| 213 | |
| 214 | |
| 215 | struct HB_ClassDefFormat1_ |
| 216 | { |
claireho | 57e6107 | 2010-11-11 10:57:27 -0800 | [diff] [blame] | 217 | HB_UShort* ClassValueArray; /* array of class values */ |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 218 | HB_UShort StartGlyph; /* first glyph ID of the |
| 219 | ClassValueArray */ |
| 220 | HB_UShort GlyphCount; /* size of the ClassValueArray */ |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 221 | }; |
| 222 | |
| 223 | typedef struct HB_ClassDefFormat1_ HB_ClassDefFormat1; |
| 224 | |
| 225 | |
| 226 | struct HB_ClassRangeRecord_ |
| 227 | { |
| 228 | HB_UShort Start; /* first glyph ID in the range */ |
| 229 | HB_UShort End; /* last glyph ID in the range */ |
| 230 | HB_UShort Class; /* applied to all glyphs in range */ |
| 231 | }; |
| 232 | |
| 233 | typedef struct HB_ClassRangeRecord_ HB_ClassRangeRecord; |
| 234 | |
| 235 | |
| 236 | struct HB_ClassDefFormat2_ |
| 237 | { |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 238 | HB_ClassRangeRecord* ClassRangeRecord; |
| 239 | /* array of ClassRangeRecords */ |
claireho | 57e6107 | 2010-11-11 10:57:27 -0800 | [diff] [blame] | 240 | HB_UShort ClassRangeCount; |
| 241 | /* number of ClassRangeRecords */ |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 242 | }; |
| 243 | |
| 244 | typedef struct HB_ClassDefFormat2_ HB_ClassDefFormat2; |
| 245 | |
| 246 | |
| 247 | struct HB_ClassDefinition_ |
| 248 | { |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 249 | union |
| 250 | { |
| 251 | HB_ClassDefFormat1 cd1; |
| 252 | HB_ClassDefFormat2 cd2; |
| 253 | } cd; |
claireho | 57e6107 | 2010-11-11 10:57:27 -0800 | [diff] [blame] | 254 | |
| 255 | HB_Byte ClassFormat; /* 1 or 2 */ |
| 256 | HB_Bool loaded; |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 257 | }; |
| 258 | |
| 259 | typedef struct HB_ClassDefinition_ HB_ClassDefinition; |
| 260 | |
| 261 | |
| 262 | struct HB_Device_ |
| 263 | { |
claireho | 57e6107 | 2010-11-11 10:57:27 -0800 | [diff] [blame] | 264 | HB_UShort* DeltaValue; /* array of compressed data */ |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 265 | HB_UShort StartSize; /* smallest size to correct */ |
| 266 | HB_UShort EndSize; /* largest size to correct */ |
claireho | 57e6107 | 2010-11-11 10:57:27 -0800 | [diff] [blame] | 267 | HB_Byte DeltaFormat; /* DeltaValue array data format: |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 268 | 1, 2, or 3 */ |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 269 | }; |
| 270 | |
| 271 | typedef struct HB_Device_ HB_Device; |
| 272 | |
| 273 | |
| 274 | enum HB_Type_ |
| 275 | { |
| 276 | HB_Type_GSUB, |
| 277 | HB_Type_GPOS |
| 278 | }; |
| 279 | |
| 280 | typedef enum HB_Type_ HB_Type; |
| 281 | |
claireho | 57e6107 | 2010-11-11 10:57:27 -0800 | [diff] [blame] | 282 | #ifdef HB_USE_PACKED_STRUCTS |
| 283 | #pragma pack(pop) |
| 284 | #endif |
claireho | 5569331 | 2010-04-26 13:43:16 -0700 | [diff] [blame] | 285 | |
| 286 | HB_END_HEADER |
| 287 | |
| 288 | #endif /* HARFBUZZ_OPEN_H */ |