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comparison: gfx/harfbuzz/src/hb-ot-layout-jstf-table.hh
gfx/harfbuzz/src/hb-ot-layout-jstf-table.hh
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- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:8a911ae3993f |
|---|---|
| 1 /* | |
| 2 * Copyright © 2013 Google, Inc. | |
| 3 * | |
| 4 * This is part of HarfBuzz, a text shaping library. | |
| 5 * | |
| 6 * Permission is hereby granted, without written agreement and without | |
| 7 * license or royalty fees, to use, copy, modify, and distribute this | |
| 8 * software and its documentation for any purpose, provided that the | |
| 9 * above copyright notice and the following two paragraphs appear in | |
| 10 * all copies of this software. | |
| 11 * | |
| 12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR | |
| 13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES | |
| 14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN | |
| 15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH | |
| 16 * DAMAGE. | |
| 17 * | |
| 18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, | |
| 19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND | |
| 20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS | |
| 21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO | |
| 22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. | |
| 23 * | |
| 24 * Google Author(s): Behdad Esfahbod | |
| 25 */ | |
| 26 | |
| 27 #ifndef HB_OT_LAYOUT_JSTF_TABLE_HH | |
| 28 #define HB_OT_LAYOUT_JSTF_TABLE_HH | |
| 29 | |
| 30 #include "hb-open-type-private.hh" | |
| 31 #include "hb-ot-layout-gpos-table.hh" | |
| 32 | |
| 33 | |
| 34 namespace OT { | |
| 35 | |
| 36 | |
| 37 /* | |
| 38 * JstfModList -- Justification Modification List Tables | |
| 39 */ | |
| 40 | |
| 41 typedef IndexArray JstfModList; | |
| 42 | |
| 43 | |
| 44 /* | |
| 45 * JstfMax -- Justification Maximum Table | |
| 46 */ | |
| 47 | |
| 48 typedef OffsetListOf<PosLookup> JstfMax; | |
| 49 | |
| 50 | |
| 51 /* | |
| 52 * JstfPriority -- Justification Priority Table | |
| 53 */ | |
| 54 | |
| 55 struct JstfPriority | |
| 56 { | |
| 57 inline bool sanitize (hb_sanitize_context_t *c) { | |
| 58 TRACE_SANITIZE (this); | |
| 59 return TRACE_RETURN (c->check_struct (this) && | |
| 60 shrinkageEnableGSUB.sanitize (c, this) && | |
| 61 shrinkageDisableGSUB.sanitize (c, this) && | |
| 62 shrinkageEnableGPOS.sanitize (c, this) && | |
| 63 shrinkageDisableGPOS.sanitize (c, this) && | |
| 64 shrinkageJstfMax.sanitize (c, this) && | |
| 65 extensionEnableGSUB.sanitize (c, this) && | |
| 66 extensionDisableGSUB.sanitize (c, this) && | |
| 67 extensionEnableGPOS.sanitize (c, this) && | |
| 68 extensionDisableGPOS.sanitize (c, this) && | |
| 69 extensionJstfMax.sanitize (c, this)); | |
| 70 } | |
| 71 | |
| 72 protected: | |
| 73 OffsetTo<JstfModList> | |
| 74 shrinkageEnableGSUB; /* Offset to Shrinkage Enable GSUB | |
| 75 * JstfModList table--from beginning of | |
| 76 * JstfPriority table--may be NULL */ | |
| 77 OffsetTo<JstfModList> | |
| 78 shrinkageDisableGSUB; /* Offset to Shrinkage Disable GSUB | |
| 79 * JstfModList table--from beginning of | |
| 80 * JstfPriority table--may be NULL */ | |
| 81 OffsetTo<JstfModList> | |
| 82 shrinkageEnableGPOS; /* Offset to Shrinkage Enable GPOS | |
| 83 * JstfModList table--from beginning of | |
| 84 * JstfPriority table--may be NULL */ | |
| 85 OffsetTo<JstfModList> | |
| 86 shrinkageDisableGPOS; /* Offset to Shrinkage Disable GPOS | |
| 87 * JstfModList table--from beginning of | |
| 88 * JstfPriority table--may be NULL */ | |
| 89 OffsetTo<JstfMax> | |
| 90 shrinkageJstfMax; /* Offset to Shrinkage JstfMax table-- | |
| 91 * from beginning of JstfPriority table | |
| 92 * --may be NULL */ | |
| 93 OffsetTo<JstfModList> | |
| 94 extensionEnableGSUB; /* Offset to Extension Enable GSUB | |
| 95 * JstfModList table--from beginning of | |
| 96 * JstfPriority table--may be NULL */ | |
| 97 OffsetTo<JstfModList> | |
| 98 extensionDisableGSUB; /* Offset to Extension Disable GSUB | |
| 99 * JstfModList table--from beginning of | |
| 100 * JstfPriority table--may be NULL */ | |
| 101 OffsetTo<JstfModList> | |
| 102 extensionEnableGPOS; /* Offset to Extension Enable GPOS | |
| 103 * JstfModList table--from beginning of | |
| 104 * JstfPriority table--may be NULL */ | |
| 105 OffsetTo<JstfModList> | |
| 106 extensionDisableGPOS; /* Offset to Extension Disable GPOS | |
| 107 * JstfModList table--from beginning of | |
| 108 * JstfPriority table--may be NULL */ | |
| 109 OffsetTo<JstfMax> | |
| 110 extensionJstfMax; /* Offset to Extension JstfMax table-- | |
| 111 * from beginning of JstfPriority table | |
| 112 * --may be NULL */ | |
| 113 | |
| 114 public: | |
| 115 DEFINE_SIZE_STATIC (20); | |
| 116 }; | |
| 117 | |
| 118 | |
| 119 /* | |
| 120 * JstfLangSys -- Justification Language System Table | |
| 121 */ | |
| 122 | |
| 123 struct JstfLangSys : OffsetListOf<JstfPriority> | |
| 124 { | |
| 125 inline bool sanitize (hb_sanitize_context_t *c, | |
| 126 const Record<JstfLangSys>::sanitize_closure_t * = NULL) { | |
| 127 TRACE_SANITIZE (this); | |
| 128 return TRACE_RETURN (OffsetListOf<JstfPriority>::sanitize (c)); | |
| 129 } | |
| 130 }; | |
| 131 | |
| 132 | |
| 133 /* | |
| 134 * ExtenderGlyphs -- Extender Glyph Table | |
| 135 */ | |
| 136 | |
| 137 typedef SortedArrayOf<GlyphID> ExtenderGlyphs; | |
| 138 | |
| 139 | |
| 140 /* | |
| 141 * JstfScript -- The Justification Table | |
| 142 */ | |
| 143 | |
| 144 struct JstfScript | |
| 145 { | |
| 146 inline unsigned int get_lang_sys_count (void) const | |
| 147 { return langSys.len; } | |
| 148 inline const Tag& get_lang_sys_tag (unsigned int i) const | |
| 149 { return langSys.get_tag (i); } | |
| 150 inline unsigned int get_lang_sys_tags (unsigned int start_offset, | |
| 151 unsigned int *lang_sys_count /* IN/OUT */, | |
| 152 hb_tag_t *lang_sys_tags /* OUT */) const | |
| 153 { return langSys.get_tags (start_offset, lang_sys_count, lang_sys_tags); } | |
| 154 inline const JstfLangSys& get_lang_sys (unsigned int i) const | |
| 155 { | |
| 156 if (i == Index::NOT_FOUND_INDEX) return get_default_lang_sys (); | |
| 157 return this+langSys[i].offset; | |
| 158 } | |
| 159 inline bool find_lang_sys_index (hb_tag_t tag, unsigned int *index) const | |
| 160 { return langSys.find_index (tag, index); } | |
| 161 | |
| 162 inline bool has_default_lang_sys (void) const { return defaultLangSys != 0; } | |
| 163 inline const JstfLangSys& get_default_lang_sys (void) const { return this+defaultLangSys; } | |
| 164 | |
| 165 inline bool sanitize (hb_sanitize_context_t *c, | |
| 166 const Record<JstfScript>::sanitize_closure_t * = NULL) { | |
| 167 TRACE_SANITIZE (this); | |
| 168 return TRACE_RETURN (extenderGlyphs.sanitize (c, this) && | |
| 169 defaultLangSys.sanitize (c, this) && | |
| 170 langSys.sanitize (c, this)); | |
| 171 } | |
| 172 | |
| 173 protected: | |
| 174 OffsetTo<ExtenderGlyphs> | |
| 175 extenderGlyphs; /* Offset to ExtenderGlyph table--from beginning | |
| 176 * of JstfScript table-may be NULL */ | |
| 177 OffsetTo<JstfLangSys> | |
| 178 defaultLangSys; /* Offset to DefaultJstfLangSys table--from | |
| 179 * beginning of JstfScript table--may be Null */ | |
| 180 RecordArrayOf<JstfLangSys> | |
| 181 langSys; /* Array of JstfLangSysRecords--listed | |
| 182 * alphabetically by LangSysTag */ | |
| 183 public: | |
| 184 DEFINE_SIZE_ARRAY (6, langSys); | |
| 185 }; | |
| 186 | |
| 187 | |
| 188 /* | |
| 189 * JSTF -- The Justification Table | |
| 190 */ | |
| 191 | |
| 192 struct JSTF | |
| 193 { | |
| 194 static const hb_tag_t tableTag = HB_OT_TAG_JSTF; | |
| 195 | |
| 196 inline unsigned int get_script_count (void) const | |
| 197 { return scriptList.len; } | |
| 198 inline const Tag& get_script_tag (unsigned int i) const | |
| 199 { return scriptList.get_tag (i); } | |
| 200 inline unsigned int get_script_tags (unsigned int start_offset, | |
| 201 unsigned int *script_count /* IN/OUT */, | |
| 202 hb_tag_t *script_tags /* OUT */) const | |
| 203 { return scriptList.get_tags (start_offset, script_count, script_tags); } | |
| 204 inline const JstfScript& get_script (unsigned int i) const | |
| 205 { return this+scriptList[i].offset; } | |
| 206 inline bool find_script_index (hb_tag_t tag, unsigned int *index) const | |
| 207 { return scriptList.find_index (tag, index); } | |
| 208 | |
| 209 inline bool sanitize (hb_sanitize_context_t *c) { | |
| 210 TRACE_SANITIZE (this); | |
| 211 return TRACE_RETURN (version.sanitize (c) && likely (version.major == 1) && | |
| 212 scriptList.sanitize (c, this)); | |
| 213 } | |
| 214 | |
| 215 protected: | |
| 216 FixedVersion version; /* Version of the JSTF table--initially set | |
| 217 * to 0x00010000 */ | |
| 218 RecordArrayOf<JstfScript> | |
| 219 scriptList; /* Array of JstfScripts--listed | |
| 220 * alphabetically by ScriptTag */ | |
| 221 public: | |
| 222 DEFINE_SIZE_ARRAY (6, scriptList); | |
| 223 }; | |
| 224 | |
| 225 | |
| 226 } /* namespace OT */ | |
| 227 | |
| 228 | |
| 229 #endif /* HB_OT_LAYOUT_JSTF_TABLE_HH */ |
