1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/harfbuzz/src/hb-ot-layout-jstf-table.hh Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,229 @@
1.4 +/*
1.5 + * Copyright © 2013 Google, Inc.
1.6 + *
1.7 + * This is part of HarfBuzz, a text shaping library.
1.8 + *
1.9 + * Permission is hereby granted, without written agreement and without
1.10 + * license or royalty fees, to use, copy, modify, and distribute this
1.11 + * software and its documentation for any purpose, provided that the
1.12 + * above copyright notice and the following two paragraphs appear in
1.13 + * all copies of this software.
1.14 + *
1.15 + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
1.16 + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
1.17 + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
1.18 + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
1.19 + * DAMAGE.
1.20 + *
1.21 + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
1.22 + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
1.23 + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
1.24 + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
1.25 + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
1.26 + *
1.27 + * Google Author(s): Behdad Esfahbod
1.28 + */
1.29 +
1.30 +#ifndef HB_OT_LAYOUT_JSTF_TABLE_HH
1.31 +#define HB_OT_LAYOUT_JSTF_TABLE_HH
1.32 +
1.33 +#include "hb-open-type-private.hh"
1.34 +#include "hb-ot-layout-gpos-table.hh"
1.35 +
1.36 +
1.37 +namespace OT {
1.38 +
1.39 +
1.40 +/*
1.41 + * JstfModList -- Justification Modification List Tables
1.42 + */
1.43 +
1.44 +typedef IndexArray JstfModList;
1.45 +
1.46 +
1.47 +/*
1.48 + * JstfMax -- Justification Maximum Table
1.49 + */
1.50 +
1.51 +typedef OffsetListOf<PosLookup> JstfMax;
1.52 +
1.53 +
1.54 +/*
1.55 + * JstfPriority -- Justification Priority Table
1.56 + */
1.57 +
1.58 +struct JstfPriority
1.59 +{
1.60 + inline bool sanitize (hb_sanitize_context_t *c) {
1.61 + TRACE_SANITIZE (this);
1.62 + return TRACE_RETURN (c->check_struct (this) &&
1.63 + shrinkageEnableGSUB.sanitize (c, this) &&
1.64 + shrinkageDisableGSUB.sanitize (c, this) &&
1.65 + shrinkageEnableGPOS.sanitize (c, this) &&
1.66 + shrinkageDisableGPOS.sanitize (c, this) &&
1.67 + shrinkageJstfMax.sanitize (c, this) &&
1.68 + extensionEnableGSUB.sanitize (c, this) &&
1.69 + extensionDisableGSUB.sanitize (c, this) &&
1.70 + extensionEnableGPOS.sanitize (c, this) &&
1.71 + extensionDisableGPOS.sanitize (c, this) &&
1.72 + extensionJstfMax.sanitize (c, this));
1.73 + }
1.74 +
1.75 + protected:
1.76 + OffsetTo<JstfModList>
1.77 + shrinkageEnableGSUB; /* Offset to Shrinkage Enable GSUB
1.78 + * JstfModList table--from beginning of
1.79 + * JstfPriority table--may be NULL */
1.80 + OffsetTo<JstfModList>
1.81 + shrinkageDisableGSUB; /* Offset to Shrinkage Disable GSUB
1.82 + * JstfModList table--from beginning of
1.83 + * JstfPriority table--may be NULL */
1.84 + OffsetTo<JstfModList>
1.85 + shrinkageEnableGPOS; /* Offset to Shrinkage Enable GPOS
1.86 + * JstfModList table--from beginning of
1.87 + * JstfPriority table--may be NULL */
1.88 + OffsetTo<JstfModList>
1.89 + shrinkageDisableGPOS; /* Offset to Shrinkage Disable GPOS
1.90 + * JstfModList table--from beginning of
1.91 + * JstfPriority table--may be NULL */
1.92 + OffsetTo<JstfMax>
1.93 + shrinkageJstfMax; /* Offset to Shrinkage JstfMax table--
1.94 + * from beginning of JstfPriority table
1.95 + * --may be NULL */
1.96 + OffsetTo<JstfModList>
1.97 + extensionEnableGSUB; /* Offset to Extension Enable GSUB
1.98 + * JstfModList table--from beginning of
1.99 + * JstfPriority table--may be NULL */
1.100 + OffsetTo<JstfModList>
1.101 + extensionDisableGSUB; /* Offset to Extension Disable GSUB
1.102 + * JstfModList table--from beginning of
1.103 + * JstfPriority table--may be NULL */
1.104 + OffsetTo<JstfModList>
1.105 + extensionEnableGPOS; /* Offset to Extension Enable GPOS
1.106 + * JstfModList table--from beginning of
1.107 + * JstfPriority table--may be NULL */
1.108 + OffsetTo<JstfModList>
1.109 + extensionDisableGPOS; /* Offset to Extension Disable GPOS
1.110 + * JstfModList table--from beginning of
1.111 + * JstfPriority table--may be NULL */
1.112 + OffsetTo<JstfMax>
1.113 + extensionJstfMax; /* Offset to Extension JstfMax table--
1.114 + * from beginning of JstfPriority table
1.115 + * --may be NULL */
1.116 +
1.117 + public:
1.118 + DEFINE_SIZE_STATIC (20);
1.119 +};
1.120 +
1.121 +
1.122 +/*
1.123 + * JstfLangSys -- Justification Language System Table
1.124 + */
1.125 +
1.126 +struct JstfLangSys : OffsetListOf<JstfPriority>
1.127 +{
1.128 + inline bool sanitize (hb_sanitize_context_t *c,
1.129 + const Record<JstfLangSys>::sanitize_closure_t * = NULL) {
1.130 + TRACE_SANITIZE (this);
1.131 + return TRACE_RETURN (OffsetListOf<JstfPriority>::sanitize (c));
1.132 + }
1.133 +};
1.134 +
1.135 +
1.136 +/*
1.137 + * ExtenderGlyphs -- Extender Glyph Table
1.138 + */
1.139 +
1.140 +typedef SortedArrayOf<GlyphID> ExtenderGlyphs;
1.141 +
1.142 +
1.143 +/*
1.144 + * JstfScript -- The Justification Table
1.145 + */
1.146 +
1.147 +struct JstfScript
1.148 +{
1.149 + inline unsigned int get_lang_sys_count (void) const
1.150 + { return langSys.len; }
1.151 + inline const Tag& get_lang_sys_tag (unsigned int i) const
1.152 + { return langSys.get_tag (i); }
1.153 + inline unsigned int get_lang_sys_tags (unsigned int start_offset,
1.154 + unsigned int *lang_sys_count /* IN/OUT */,
1.155 + hb_tag_t *lang_sys_tags /* OUT */) const
1.156 + { return langSys.get_tags (start_offset, lang_sys_count, lang_sys_tags); }
1.157 + inline const JstfLangSys& get_lang_sys (unsigned int i) const
1.158 + {
1.159 + if (i == Index::NOT_FOUND_INDEX) return get_default_lang_sys ();
1.160 + return this+langSys[i].offset;
1.161 + }
1.162 + inline bool find_lang_sys_index (hb_tag_t tag, unsigned int *index) const
1.163 + { return langSys.find_index (tag, index); }
1.164 +
1.165 + inline bool has_default_lang_sys (void) const { return defaultLangSys != 0; }
1.166 + inline const JstfLangSys& get_default_lang_sys (void) const { return this+defaultLangSys; }
1.167 +
1.168 + inline bool sanitize (hb_sanitize_context_t *c,
1.169 + const Record<JstfScript>::sanitize_closure_t * = NULL) {
1.170 + TRACE_SANITIZE (this);
1.171 + return TRACE_RETURN (extenderGlyphs.sanitize (c, this) &&
1.172 + defaultLangSys.sanitize (c, this) &&
1.173 + langSys.sanitize (c, this));
1.174 + }
1.175 +
1.176 + protected:
1.177 + OffsetTo<ExtenderGlyphs>
1.178 + extenderGlyphs; /* Offset to ExtenderGlyph table--from beginning
1.179 + * of JstfScript table-may be NULL */
1.180 + OffsetTo<JstfLangSys>
1.181 + defaultLangSys; /* Offset to DefaultJstfLangSys table--from
1.182 + * beginning of JstfScript table--may be Null */
1.183 + RecordArrayOf<JstfLangSys>
1.184 + langSys; /* Array of JstfLangSysRecords--listed
1.185 + * alphabetically by LangSysTag */
1.186 + public:
1.187 + DEFINE_SIZE_ARRAY (6, langSys);
1.188 +};
1.189 +
1.190 +
1.191 +/*
1.192 + * JSTF -- The Justification Table
1.193 + */
1.194 +
1.195 +struct JSTF
1.196 +{
1.197 + static const hb_tag_t tableTag = HB_OT_TAG_JSTF;
1.198 +
1.199 + inline unsigned int get_script_count (void) const
1.200 + { return scriptList.len; }
1.201 + inline const Tag& get_script_tag (unsigned int i) const
1.202 + { return scriptList.get_tag (i); }
1.203 + inline unsigned int get_script_tags (unsigned int start_offset,
1.204 + unsigned int *script_count /* IN/OUT */,
1.205 + hb_tag_t *script_tags /* OUT */) const
1.206 + { return scriptList.get_tags (start_offset, script_count, script_tags); }
1.207 + inline const JstfScript& get_script (unsigned int i) const
1.208 + { return this+scriptList[i].offset; }
1.209 + inline bool find_script_index (hb_tag_t tag, unsigned int *index) const
1.210 + { return scriptList.find_index (tag, index); }
1.211 +
1.212 + inline bool sanitize (hb_sanitize_context_t *c) {
1.213 + TRACE_SANITIZE (this);
1.214 + return TRACE_RETURN (version.sanitize (c) && likely (version.major == 1) &&
1.215 + scriptList.sanitize (c, this));
1.216 + }
1.217 +
1.218 + protected:
1.219 + FixedVersion version; /* Version of the JSTF table--initially set
1.220 + * to 0x00010000 */
1.221 + RecordArrayOf<JstfScript>
1.222 + scriptList; /* Array of JstfScripts--listed
1.223 + * alphabetically by ScriptTag */
1.224 + public:
1.225 + DEFINE_SIZE_ARRAY (6, scriptList);
1.226 +};
1.227 +
1.228 +
1.229 +} /* namespace OT */
1.230 +
1.231 +
1.232 +#endif /* HB_OT_LAYOUT_JSTF_TABLE_HH */
