2 * Copyright (C) 1998-2004 David Turner and Werner Lemberg
3 * Copyright (C) 2006 Behdad Esfahbod
5 * This is part of HarfBuzz, an OpenType Layout engine library.
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.
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
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.
26 #ifndef HARFBUZZ_OPEN_H
27 #define HARFBUZZ_OPEN_H
29 #include "harfbuzz-global.h"
33 /* Use this if a feature applies to all glyphs */
34 #define HB_ALL_GLYPHS 0xFFFF
36 #define HB_DEFAULT_LANGUAGE 0xFFFF
38 #define HB_MAX_NESTING_LEVEL 100
41 /* Script list related structures */
45 HB_UShort LookupOrderOffset; /* always 0 for TT Open 1.0 */
46 HB_UShort ReqFeatureIndex; /* required FeatureIndex */
47 HB_UShort FeatureCount; /* number of Feature indices */
48 HB_UShort* FeatureIndex; /* array of Feature indices */
51 typedef struct HB_LangSys_ HB_LangSys;
54 struct HB_LangSysRecord_
56 HB_UInt LangSysTag; /* LangSysTag identifier */
57 HB_LangSys LangSys; /* LangSys table */
60 typedef struct HB_LangSysRecord_ HB_LangSysRecord;
63 struct HB_ScriptTable_
65 HB_LangSys DefaultLangSys; /* DefaultLangSys table */
66 HB_UShort LangSysCount; /* number of LangSysRecords */
67 HB_LangSysRecord* LangSysRecord; /* array of LangSysRecords */
70 typedef struct HB_ScriptTable_ HB_ScriptTable;
73 struct HB_ScriptRecord_
75 HB_UInt ScriptTag; /* ScriptTag identifier */
76 HB_ScriptTable Script; /* Script table */
79 typedef struct HB_ScriptRecord_ HB_ScriptRecord;
84 HB_UShort ScriptCount; /* number of ScriptRecords */
85 HB_ScriptRecord* ScriptRecord; /* array of ScriptRecords */
88 typedef struct HB_ScriptList_ HB_ScriptList;
91 /* Feature list related structures */
95 HB_UShort FeatureParams; /* always 0 for TT Open 1.0 */
96 HB_UShort LookupListCount; /* number of LookupList indices */
97 HB_UShort* LookupListIndex; /* array of LookupList indices */
100 typedef struct HB_Feature_ HB_Feature;
103 struct HB_FeatureRecord_
105 HB_UInt FeatureTag; /* FeatureTag identifier */
106 HB_Feature Feature; /* Feature table */
109 typedef struct HB_FeatureRecord_ HB_FeatureRecord;
112 struct HB_FeatureList_
114 HB_UShort FeatureCount; /* number of FeatureRecords */
115 HB_FeatureRecord* FeatureRecord; /* array of FeatureRecords */
116 HB_UShort* ApplyOrder; /* order to apply features */
117 HB_UShort ApplyCount; /* number of elements in ApplyOrder */
120 typedef struct HB_FeatureList_ HB_FeatureList;
123 /* Lookup list related structures */
125 typedef struct HB_SubTable_ HB_SubTable;
130 HB_UShort LookupType; /* Lookup type */
131 HB_UShort LookupFlag; /* Lookup qualifiers */
132 HB_UShort SubTableCount; /* number of SubTables */
133 HB_SubTable* SubTable; /* array of SubTables */
136 typedef struct HB_Lookup_ HB_Lookup;
139 /* The `Properties' field is not defined in the OpenType specification but
140 is needed for processing lookups. If properties[n] is > 0, the
141 functions HB_GSUB_Apply_String() resp. HB_GPOS_Apply_String() will
142 process Lookup[n] for glyphs which have the specific bit not set in
143 the `properties' field of the input string object. */
145 struct HB_LookupList_
147 HB_UShort LookupCount; /* number of Lookups */
148 HB_Lookup* Lookup; /* array of Lookup records */
149 HB_UInt* Properties; /* array of flags */
152 typedef struct HB_LookupList_ HB_LookupList;
155 /* Possible LookupFlag bit masks. `HB_LOOKUP_FLAG_IGNORE_SPECIAL_MARKS' comes from the
156 OpenType 1.2 specification; HB_LOOKUP_FLAG_RIGHT_TO_LEFT has been (re)introduced in
157 OpenType 1.3 -- if set, the last glyph in a cursive attachment
158 sequence has to be positioned on the baseline -- regardless of the
159 writing direction. */
161 #define HB_LOOKUP_FLAG_RIGHT_TO_LEFT 0x0001
162 #define HB_LOOKUP_FLAG_IGNORE_BASE_GLYPHS 0x0002
163 #define HB_LOOKUP_FLAG_IGNORE_LIGATURES 0x0004
164 #define HB_LOOKUP_FLAG_IGNORE_MARKS 0x0008
165 #define HB_LOOKUP_FLAG_IGNORE_SPECIAL_MARKS 0xFF00
168 struct HB_CoverageFormat1_
170 HB_UShort GlyphCount; /* number of glyphs in GlyphArray */
171 HB_UShort* GlyphArray; /* array of glyph IDs */
174 typedef struct HB_CoverageFormat1_ HB_CoverageFormat1;
177 struct HB_RangeRecord_
179 HB_UShort Start; /* first glyph ID in the range */
180 HB_UShort End; /* last glyph ID in the range */
181 HB_UShort StartCoverageIndex; /* coverage index of first
182 glyph ID in the range */
185 typedef struct HB_RangeRecord_ HB_RangeRecord;
188 struct HB_CoverageFormat2_
190 HB_UShort RangeCount; /* number of RangeRecords */
191 HB_RangeRecord* RangeRecord; /* array of RangeRecords */
194 typedef struct HB_CoverageFormat2_ HB_CoverageFormat2;
199 HB_UShort CoverageFormat; /* 1 or 2 */
203 HB_CoverageFormat1 cf1;
204 HB_CoverageFormat2 cf2;
208 typedef struct HB_Coverage_ HB_Coverage;
211 struct HB_ClassDefFormat1_
213 HB_UShort StartGlyph; /* first glyph ID of the
215 HB_UShort GlyphCount; /* size of the ClassValueArray */
216 HB_UShort* ClassValueArray; /* array of class values */
219 typedef struct HB_ClassDefFormat1_ HB_ClassDefFormat1;
222 struct HB_ClassRangeRecord_
224 HB_UShort Start; /* first glyph ID in the range */
225 HB_UShort End; /* last glyph ID in the range */
226 HB_UShort Class; /* applied to all glyphs in range */
229 typedef struct HB_ClassRangeRecord_ HB_ClassRangeRecord;
232 struct HB_ClassDefFormat2_
234 HB_UShort ClassRangeCount;
235 /* number of ClassRangeRecords */
236 HB_ClassRangeRecord* ClassRangeRecord;
237 /* array of ClassRangeRecords */
240 typedef struct HB_ClassDefFormat2_ HB_ClassDefFormat2;
243 struct HB_ClassDefinition_
247 HB_UShort ClassFormat; /* 1 or 2 */
251 HB_ClassDefFormat1 cd1;
252 HB_ClassDefFormat2 cd2;
256 typedef struct HB_ClassDefinition_ HB_ClassDefinition;
261 HB_UShort StartSize; /* smallest size to correct */
262 HB_UShort EndSize; /* largest size to correct */
263 HB_UShort DeltaFormat; /* DeltaValue array data format:
265 HB_UShort* DeltaValue; /* array of compressed data */
268 typedef struct HB_Device_ HB_Device;
277 typedef enum HB_Type_ HB_Type;
282 #endif /* HARFBUZZ_OPEN_H */