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kc3-lang/harfbuzz/src/hb-ot-layout-jstf-table.hh
Ebrahim Byagowi
- src/hb-ot-layout-jstf-table.hh
-
/* * Copyright © 2013 Google, Inc. * * This is part of HarfBuzz, a text shaping library. * * Permission is hereby granted, without written agreement and without * license or royalty fees, to use, copy, modify, and distribute this * software and its documentation for any purpose, provided that the * above copyright notice and the following two paragraphs appear in * all copies of this software. * * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH * DAMAGE. * * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. * * Google Author(s): Behdad Esfahbod */ #ifndef HB_OT_LAYOUT_JSTF_TABLE_HH #define HB_OT_LAYOUT_JSTF_TABLE_HH #include "hb-open-type.hh" #include "hb-ot-layout-gpos-table.hh" namespace OT { /* * JstfModList -- Justification Modification List Tables */ typedef IndexArray JstfModList; /* * JstfMax -- Justification Maximum Table */ typedef OffsetListOf<PosLookup> JstfMax; /* * JstfPriority -- Justification Priority Table */ struct JstfPriority { bool sanitize (hb_sanitize_context_t *c) const { TRACE_SANITIZE (this); return_trace (c->check_struct (this) && shrinkageEnableGSUB.sanitize (c, this) && shrinkageDisableGSUB.sanitize (c, this) && shrinkageEnableGPOS.sanitize (c, this) && shrinkageDisableGPOS.sanitize (c, this) && shrinkageJstfMax.sanitize (c, this) && extensionEnableGSUB.sanitize (c, this) && extensionDisableGSUB.sanitize (c, this) && extensionEnableGPOS.sanitize (c, this) && extensionDisableGPOS.sanitize (c, this) && extensionJstfMax.sanitize (c, this)); } protected: OffsetTo<JstfModList> shrinkageEnableGSUB; /* Offset to Shrinkage Enable GSUB * JstfModList table--from beginning of * JstfPriority table--may be NULL */ OffsetTo<JstfModList> shrinkageDisableGSUB; /* Offset to Shrinkage Disable GSUB * JstfModList table--from beginning of * JstfPriority table--may be NULL */ OffsetTo<JstfModList> shrinkageEnableGPOS; /* Offset to Shrinkage Enable GPOS * JstfModList table--from beginning of * JstfPriority table--may be NULL */ OffsetTo<JstfModList> shrinkageDisableGPOS; /* Offset to Shrinkage Disable GPOS * JstfModList table--from beginning of * JstfPriority table--may be NULL */ OffsetTo<JstfMax> shrinkageJstfMax; /* Offset to Shrinkage JstfMax table-- * from beginning of JstfPriority table * --may be NULL */ OffsetTo<JstfModList> extensionEnableGSUB; /* Offset to Extension Enable GSUB * JstfModList table--from beginning of * JstfPriority table--may be NULL */ OffsetTo<JstfModList> extensionDisableGSUB; /* Offset to Extension Disable GSUB * JstfModList table--from beginning of * JstfPriority table--may be NULL */ OffsetTo<JstfModList> extensionEnableGPOS; /* Offset to Extension Enable GPOS * JstfModList table--from beginning of * JstfPriority table--may be NULL */ OffsetTo<JstfModList> extensionDisableGPOS; /* Offset to Extension Disable GPOS * JstfModList table--from beginning of * JstfPriority table--may be NULL */ OffsetTo<JstfMax> extensionJstfMax; /* Offset to Extension JstfMax table-- * from beginning of JstfPriority table * --may be NULL */ public: DEFINE_SIZE_STATIC (20); }; /* * JstfLangSys -- Justification Language System Table */ struct JstfLangSys : OffsetListOf<JstfPriority> { bool sanitize (hb_sanitize_context_t *c, const Record_sanitize_closure_t * = nullptr) const { TRACE_SANITIZE (this); return_trace (OffsetListOf<JstfPriority>::sanitize (c)); } }; /* * ExtenderGlyphs -- Extender Glyph Table */ typedef SortedArrayOf<HBGlyphID> ExtenderGlyphs; /* * JstfScript -- The Justification Table */ struct JstfScript { unsigned int get_lang_sys_count () const { return langSys.len; } const Tag& get_lang_sys_tag (unsigned int i) const { return langSys.get_tag (i); } unsigned int get_lang_sys_tags (unsigned int start_offset, unsigned int *lang_sys_count /* IN/OUT */, hb_tag_t *lang_sys_tags /* OUT */) const { return langSys.get_tags (start_offset, lang_sys_count, lang_sys_tags); } const JstfLangSys& get_lang_sys (unsigned int i) const { if (i == Index::NOT_FOUND_INDEX) return get_default_lang_sys (); return this+langSys[i].offset; } bool find_lang_sys_index (hb_tag_t tag, unsigned int *index) const { return langSys.find_index (tag, index); } bool has_default_lang_sys () const { return defaultLangSys != 0; } const JstfLangSys& get_default_lang_sys () const { return this+defaultLangSys; } bool sanitize (hb_sanitize_context_t *c, const Record_sanitize_closure_t * = nullptr) const { TRACE_SANITIZE (this); return_trace (extenderGlyphs.sanitize (c, this) && defaultLangSys.sanitize (c, this) && langSys.sanitize (c, this)); } protected: OffsetTo<ExtenderGlyphs> extenderGlyphs; /* Offset to ExtenderGlyph table--from beginning * of JstfScript table-may be NULL */ OffsetTo<JstfLangSys> defaultLangSys; /* Offset to DefaultJstfLangSys table--from * beginning of JstfScript table--may be Null */ RecordArrayOf<JstfLangSys> langSys; /* Array of JstfLangSysRecords--listed * alphabetically by LangSysTag */ public: DEFINE_SIZE_ARRAY (6, langSys); }; /* * JSTF -- Justification * https://docs.microsoft.com/en-us/typography/opentype/spec/jstf */ struct JSTF { static constexpr hb_tag_t tableTag = HB_OT_TAG_JSTF; unsigned int get_script_count () const { return scriptList.len; } const Tag& get_script_tag (unsigned int i) const { return scriptList.get_tag (i); } unsigned int get_script_tags (unsigned int start_offset, unsigned int *script_count /* IN/OUT */, hb_tag_t *script_tags /* OUT */) const { return scriptList.get_tags (start_offset, script_count, script_tags); } const JstfScript& get_script (unsigned int i) const { return this+scriptList[i].offset; } bool find_script_index (hb_tag_t tag, unsigned int *index) const { return scriptList.find_index (tag, index); } bool sanitize (hb_sanitize_context_t *c) const { TRACE_SANITIZE (this); return_trace (version.sanitize (c) && likely (version.major == 1) && scriptList.sanitize (c, this)); } protected: FixedVersion<>version; /* Version of the JSTF table--initially set * to 0x00010000u */ RecordArrayOf<JstfScript> scriptList; /* Array of JstfScripts--listed * alphabetically by ScriptTag */ public: DEFINE_SIZE_ARRAY (6, scriptList); }; } /* namespace OT */ #endif /* HB_OT_LAYOUT_JSTF_TABLE_HH */