зеркало из https://github.com/mozilla/gecko-dev.git
236 строки
7.0 KiB
C++
236 строки
7.0 KiB
C++
/*
|
|
* 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 */
|