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/* Pango
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* pango-ot.h:
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*
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* Copyright (C) 2000,2007 Red Hat Software
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __PANGO_OT_H__
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#define __PANGO_OT_H__
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/* Deprecated. Use HarfBuzz directly! */
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#include <pango/pangofc-font.h>
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#include <pango/pango-glyph.h>
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#include <pango/pango-font.h>
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#include <pango/pango-script.h>
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#include <pango/pango-language.h>
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G_BEGIN_DECLS
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#ifdef PANGO_ENABLE_ENGINE
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/**
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* PangoOTTag:
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*
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* The #PangoOTTag typedef is used to represent TrueType and OpenType
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* four letter tags inside Pango. Use PANGO_OT_TAG_MAKE()
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* or PANGO_OT_TAG_MAKE_FROM_STRING() macros to create <type>PangoOTTag</type>s manually.
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*/
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typedef guint32 PangoOTTag;
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/**
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* PANGO_OT_TAG_MAKE:
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* @c1: First character.
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* @c2: Second character.
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* @c3: Third character.
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* @c4: Fourth character.
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*
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* Creates a #PangoOTTag from four characters. This is similar and
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* compatible with the <function>FT_MAKE_TAG()</function> macro from FreeType.
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*/
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/**
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* PANGO_OT_TAG_MAKE_FROM_STRING:
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* @s: The string representation of the tag.
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*
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* Creates a #PangoOTTag from a string. The string should be at least
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* four characters long (pad with space characters if needed), and need
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* not be nul-terminated. This is a convenience wrapper around
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* PANGO_OT_TAG_MAKE(), but cannot be used in certain situations, for
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* example, as a switch expression, as it dereferences pointers.
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*/
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#define PANGO_OT_TAG_MAKE(c1,c2,c3,c4) ((PangoOTTag) FT_MAKE_TAG (c1, c2, c3, c4))
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#define PANGO_OT_TAG_MAKE_FROM_STRING(s) (PANGO_OT_TAG_MAKE(((const char *) s)[0], \
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((const char *) s)[1], \
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((const char *) s)[2], \
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((const char *) s)[3]))
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typedef struct _PangoOTInfo PangoOTInfo;
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typedef struct _PangoOTBuffer PangoOTBuffer;
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typedef struct _PangoOTGlyph PangoOTGlyph;
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typedef struct _PangoOTRuleset PangoOTRuleset;
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typedef struct _PangoOTFeatureMap PangoOTFeatureMap;
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typedef struct _PangoOTRulesetDescription PangoOTRulesetDescription;
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/**
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* PangoOTTableType:
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* @PANGO_OT_TABLE_GSUB: The GSUB table.
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* @PANGO_OT_TABLE_GPOS: The GPOS table.
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*
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* The <type>PangoOTTableType</type> enumeration values are used to
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* identify the various OpenType tables in the
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* <function>pango_ot_info_*</function> functions.
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*/
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typedef enum
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{
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PANGO_OT_TABLE_GSUB,
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PANGO_OT_TABLE_GPOS
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} PangoOTTableType;
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/**
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* PANGO_OT_ALL_GLYPHS:
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*
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* This is used as the property bit in pango_ot_ruleset_add_feature() when a
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* feature should be applied to all glyphs.
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*
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* Since: 1.16
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*/
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/**
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* PANGO_OT_NO_FEATURE:
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*
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* This is used as a feature index that represent no feature, that is, should be
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* skipped. It may be returned as feature index by pango_ot_info_find_feature()
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* if the feature is not found, and pango_ot_ruleset_add_feature() function
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* automatically skips this value, so no special handling is required by the user.
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*
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* Since: 1.18
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*/
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/**
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* PANGO_OT_NO_SCRIPT:
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*
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* This is used as a script index that represent no script, that is, when the
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* requested script was not found, and a default ('DFLT') script was not found
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* either. It may be returned as script index by pango_ot_info_find_script()
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* if the script or a default script are not found, all other functions
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* taking a script index essentially return if the input script index is
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* this value, so no special handling is required by the user.
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*
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* Since: 1.18
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*/
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/**
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* PANGO_OT_DEFAULT_LANGUAGE:
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*
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* This is used as the language index in pango_ot_info_find_feature() when
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* the default language system of the script is desired.
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*
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* It is also returned by pango_ot_info_find_language() if the requested language
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* is not found, or the requested language tag was PANGO_OT_TAG_DEFAULT_LANGUAGE.
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* The end result is that one can always call pango_ot_tag_from_language()
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* followed by pango_ot_info_find_language() and pass the result to
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* pango_ot_info_find_feature() without having to worry about falling back to
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* default language system explicitly.
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*
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* Since: 1.16
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*/
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#define PANGO_OT_ALL_GLYPHS ((guint) 0xFFFF)
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#define PANGO_OT_NO_FEATURE ((guint) 0xFFFF)
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#define PANGO_OT_NO_SCRIPT ((guint) 0xFFFF)
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#define PANGO_OT_DEFAULT_LANGUAGE ((guint) 0xFFFF)
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/**
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* PANGO_OT_TAG_DEFAULT_SCRIPT:
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*
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* This is a #PangoOTTag representing the special script tag 'DFLT'. It is
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* returned as script tag by pango_ot_tag_from_script() if the requested script
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* is not found.
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*
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* Since: 1.18
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*/
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/**
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* PANGO_OT_TAG_DEFAULT_LANGUAGE:
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*
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* This is a #PangoOTTag representing a special language tag 'dflt'. It is
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* returned as language tag by pango_ot_tag_from_language() if the requested
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* language is not found. It is safe to pass this value to
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* pango_ot_info_find_language() as that function falls back to returning default
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* language-system if the requested language tag is not found.
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*
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* Since: 1.18
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*/
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#define PANGO_OT_TAG_DEFAULT_SCRIPT PANGO_OT_TAG_MAKE ('D', 'F', 'L', 'T')
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#define PANGO_OT_TAG_DEFAULT_LANGUAGE PANGO_OT_TAG_MAKE ('d', 'f', 'l', 't')
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/* Note that this must match hb_glyph_info_t */
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/**
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* PangoOTGlyph:
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* @glyph: the glyph itself.
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* @properties: the properties value, identifying which features should be
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|
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* applied on this glyph. See pango_ot_ruleset_add_feature().
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* @cluster: the cluster that this glyph belongs to.
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* @component: a component value, set by the OpenType layout engine.
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|
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* @ligID: a ligature index value, set by the OpenType layout engine.
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|
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* @internal: for Pango internal use
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*
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|
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* The #PangoOTGlyph structure represents a single glyph together with
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|
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* information used for OpenType layout processing of the glyph.
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|
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* It contains the following fields.
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|
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*/
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|
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struct _PangoOTGlyph
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|
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{
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|
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guint32 glyph;
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|
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guint properties;
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|
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guint cluster;
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|
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gushort component;
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|
Packit |
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gushort ligID;
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|
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guint internal;
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|
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};
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|
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|
|
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/**
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|
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* PangoOTFeatureMap:
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|
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0ec9dd |
* @feature_name: feature tag in represented as four-letter ASCII string.
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|
Packit |
0ec9dd |
* @property_bit: the property bit to use for this feature. See
|
|
Packit |
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* pango_ot_ruleset_add_feature() for details.
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|
Packit |
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*
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|
Packit |
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* The #PangoOTFeatureMap typedef is used to represent an OpenType
|
|
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* feature with the property bit associated with it. The feature tag is
|
|
Packit |
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* represented as a char array instead of a #PangoOTTag for convenience.
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|
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*
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|
Packit |
0ec9dd |
* Since: 1.18
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|
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*/
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|
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struct _PangoOTFeatureMap
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|
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{
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|
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char feature_name[5];
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|
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gulong property_bit;
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|
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};
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|
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|
|
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/**
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|
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* PangoOTRulesetDescription:
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|
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* @script: a #PangoScript.
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|
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0ec9dd |
* @language: a #PangoLanguage.
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|
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* @static_gsub_features: (nullable): static map of GSUB features,
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|
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* or %NULL.
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|
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* @n_static_gsub_features: length of @static_gsub_features, or 0.
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|
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* @static_gpos_features: (nullable): static map of GPOS features,
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|
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* or %NULL.
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|
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* @n_static_gpos_features: length of @static_gpos_features, or 0.
|
|
Packit |
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* @other_features: (nullable): map of extra features to add to both
|
|
Packit |
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* GSUB and GPOS, or %NULL. Unlike the static maps, this pointer
|
|
Packit |
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* need not live beyond the life of function calls taking this
|
|
Packit |
0ec9dd |
* struct.
|
|
Packit |
0ec9dd |
* @n_other_features: length of @other_features, or 0.
|
|
Packit |
0ec9dd |
*
|
|
Packit |
0ec9dd |
* The #PangoOTRuleset structure holds all the information needed
|
|
Packit |
0ec9dd |
* to build a complete #PangoOTRuleset from an OpenType font.
|
|
Packit |
0ec9dd |
* The main use of this struct is to act as the key for a per-font
|
|
Packit |
0ec9dd |
* hash of rulesets. The user populates a ruleset description and
|
|
Packit |
0ec9dd |
* gets the ruleset using pango_ot_ruleset_get_for_description()
|
|
Packit |
0ec9dd |
* or create a new one using pango_ot_ruleset_new_from_description().
|
|
Packit |
0ec9dd |
*
|
|
Packit |
0ec9dd |
* Since: 1.18
|
|
Packit |
0ec9dd |
*/
|
|
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0ec9dd |
struct _PangoOTRulesetDescription {
|
|
Packit |
0ec9dd |
PangoScript script;
|
|
Packit |
0ec9dd |
PangoLanguage *language;
|
|
Packit |
0ec9dd |
const PangoOTFeatureMap *static_gsub_features;
|
|
Packit |
0ec9dd |
guint n_static_gsub_features;
|
|
Packit |
0ec9dd |
const PangoOTFeatureMap *static_gpos_features;
|
|
Packit |
0ec9dd |
guint n_static_gpos_features;
|
|
Packit |
0ec9dd |
const PangoOTFeatureMap *other_features;
|
|
Packit |
0ec9dd |
guint n_other_features;
|
|
Packit |
0ec9dd |
};
|
|
Packit |
0ec9dd |
|
|
Packit |
0ec9dd |
|
|
Packit |
0ec9dd |
#define PANGO_TYPE_OT_INFO (pango_ot_info_get_type ())
|
|
Packit |
0ec9dd |
#define PANGO_OT_INFO(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_OT_INFO, PangoOTInfo))
|
|
Packit |
0ec9dd |
#define PANGO_IS_OT_INFO(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_OT_INFO))
|
|
Packit |
0ec9dd |
PANGO_DEPRECATED
|
|
Packit |
0ec9dd |
GType pango_ot_info_get_type (void) G_GNUC_CONST;
|
|
Packit |
0ec9dd |
|
|
Packit |
0ec9dd |
#define PANGO_TYPE_OT_RULESET (pango_ot_ruleset_get_type ())
|
|
Packit |
0ec9dd |
#define PANGO_OT_RULESET(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_OT_RULESET, PangoOTRuleset))
|
|
Packit |
0ec9dd |
#define PANGO_IS_OT_RULESET(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_OT_RULESET))
|
|
Packit |
0ec9dd |
PANGO_DEPRECATED
|
|
Packit |
0ec9dd |
GType pango_ot_ruleset_get_type (void) G_GNUC_CONST;
|
|
Packit |
0ec9dd |
|
|
Packit |
0ec9dd |
|
|
Packit |
0ec9dd |
PANGO_DEPRECATED
|
|
Packit |
0ec9dd |
PangoOTInfo *pango_ot_info_get (FT_Face face);
|
|
Packit |
0ec9dd |
|
|
Packit |
0ec9dd |
PANGO_DEPRECATED
|
|
Packit |
0ec9dd |
gboolean pango_ot_info_find_script (PangoOTInfo *info,
|
|
Packit |
0ec9dd |
PangoOTTableType table_type,
|
|
Packit |
0ec9dd |
PangoOTTag script_tag,
|
|
Packit |
0ec9dd |
guint *script_index);
|
|
Packit |
0ec9dd |
|
|
Packit |
0ec9dd |
PANGO_DEPRECATED
|
|
Packit |
0ec9dd |
gboolean pango_ot_info_find_language (PangoOTInfo *info,
|
|
Packit |
0ec9dd |
PangoOTTableType table_type,
|
|
Packit |
0ec9dd |
guint script_index,
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PangoOTTag language_tag,
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guint *language_index,
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guint *required_feature_index);
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PANGO_DEPRECATED
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gboolean pango_ot_info_find_feature (PangoOTInfo *info,
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PangoOTTableType table_type,
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PangoOTTag feature_tag,
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guint script_index,
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guint language_index,
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guint *feature_index);
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PANGO_DEPRECATED
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PangoOTTag *pango_ot_info_list_scripts (PangoOTInfo *info,
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PangoOTTableType table_type);
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PANGO_DEPRECATED
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PangoOTTag *pango_ot_info_list_languages (PangoOTInfo *info,
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PangoOTTableType table_type,
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guint script_index,
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PangoOTTag language_tag);
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PANGO_DEPRECATED
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PangoOTTag *pango_ot_info_list_features (PangoOTInfo *info,
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PangoOTTableType table_type,
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PangoOTTag tag,
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guint script_index,
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guint language_index);
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PANGO_DEPRECATED
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PangoOTBuffer *pango_ot_buffer_new (PangoFcFont *font);
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PANGO_DEPRECATED
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void pango_ot_buffer_destroy (PangoOTBuffer *buffer);
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PANGO_DEPRECATED
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void pango_ot_buffer_clear (PangoOTBuffer *buffer);
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PANGO_DEPRECATED
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void pango_ot_buffer_set_rtl (PangoOTBuffer *buffer,
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gboolean rtl);
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PANGO_DEPRECATED
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void pango_ot_buffer_add_glyph (PangoOTBuffer *buffer,
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guint glyph,
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guint properties,
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guint cluster);
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PANGO_DEPRECATED
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void pango_ot_buffer_get_glyphs (const PangoOTBuffer *buffer,
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PangoOTGlyph **glyphs,
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int *n_glyphs);
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PANGO_DEPRECATED
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void pango_ot_buffer_output (const PangoOTBuffer *buffer,
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PangoGlyphString *glyphs);
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PANGO_DEPRECATED
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void pango_ot_buffer_set_zero_width_marks (PangoOTBuffer *buffer,
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gboolean zero_width_marks);
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PANGO_DEPRECATED
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const PangoOTRuleset *pango_ot_ruleset_get_for_description (PangoOTInfo *info,
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const PangoOTRulesetDescription *desc);
|
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PANGO_DEPRECATED
|
|
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0ec9dd |
PangoOTRuleset *pango_ot_ruleset_new (PangoOTInfo *info);
|
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0ec9dd |
PANGO_DEPRECATED
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0ec9dd |
PangoOTRuleset *pango_ot_ruleset_new_for (PangoOTInfo *info,
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0ec9dd |
PangoScript script,
|
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0ec9dd |
PangoLanguage *language);
|
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0ec9dd |
PANGO_DEPRECATED
|
|
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0ec9dd |
PangoOTRuleset *pango_ot_ruleset_new_from_description (PangoOTInfo *info,
|
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0ec9dd |
const PangoOTRulesetDescription *desc);
|
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PANGO_DEPRECATED
|
|
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0ec9dd |
void pango_ot_ruleset_add_feature (PangoOTRuleset *ruleset,
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PangoOTTableType table_type,
|
|
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0ec9dd |
guint feature_index,
|
|
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0ec9dd |
gulong property_bit);
|
|
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0ec9dd |
PANGO_DEPRECATED
|
|
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0ec9dd |
gboolean pango_ot_ruleset_maybe_add_feature (PangoOTRuleset *ruleset,
|
|
Packit |
0ec9dd |
PangoOTTableType table_type,
|
|
Packit |
0ec9dd |
PangoOTTag feature_tag,
|
|
Packit |
0ec9dd |
gulong property_bit);
|
|
Packit |
0ec9dd |
PANGO_DEPRECATED
|
|
Packit |
0ec9dd |
guint pango_ot_ruleset_maybe_add_features (PangoOTRuleset *ruleset,
|
|
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0ec9dd |
PangoOTTableType table_type,
|
|
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0ec9dd |
const PangoOTFeatureMap *features,
|
|
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0ec9dd |
guint n_features);
|
|
Packit |
0ec9dd |
PANGO_DEPRECATED
|
|
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0ec9dd |
guint pango_ot_ruleset_get_feature_count (const PangoOTRuleset *ruleset,
|
|
Packit |
0ec9dd |
guint *n_gsub_features,
|
|
Packit |
0ec9dd |
guint *n_gpos_features);
|
|
Packit |
0ec9dd |
|
|
Packit |
0ec9dd |
PANGO_DEPRECATED
|
|
Packit |
0ec9dd |
void pango_ot_ruleset_substitute (const PangoOTRuleset *ruleset,
|
|
Packit |
0ec9dd |
PangoOTBuffer *buffer);
|
|
Packit |
0ec9dd |
|
|
Packit |
0ec9dd |
PANGO_DEPRECATED
|
|
Packit |
0ec9dd |
void pango_ot_ruleset_position (const PangoOTRuleset *ruleset,
|
|
Packit |
0ec9dd |
PangoOTBuffer *buffer);
|
|
Packit |
0ec9dd |
|
|
Packit |
0ec9dd |
PANGO_DEPRECATED
|
|
Packit |
0ec9dd |
PangoScript pango_ot_tag_to_script (PangoOTTag script_tag) G_GNUC_CONST;
|
|
Packit |
0ec9dd |
|
|
Packit |
0ec9dd |
PANGO_DEPRECATED
|
|
Packit |
0ec9dd |
PangoOTTag pango_ot_tag_from_script (PangoScript script) G_GNUC_CONST;
|
|
Packit |
0ec9dd |
|
|
Packit |
0ec9dd |
PANGO_DEPRECATED
|
|
Packit |
0ec9dd |
PangoLanguage *pango_ot_tag_to_language (PangoOTTag language_tag) G_GNUC_CONST;
|
|
Packit |
0ec9dd |
|
|
Packit |
0ec9dd |
PANGO_DEPRECATED
|
|
Packit |
0ec9dd |
PangoOTTag pango_ot_tag_from_language (PangoLanguage *language) G_GNUC_CONST;
|
|
Packit |
0ec9dd |
|
|
Packit |
0ec9dd |
PANGO_DEPRECATED
|
|
Packit |
0ec9dd |
guint pango_ot_ruleset_description_hash (const PangoOTRulesetDescription *desc) G_GNUC_PURE;
|
|
Packit |
0ec9dd |
|
|
Packit |
0ec9dd |
PANGO_DEPRECATED
|
|
Packit |
0ec9dd |
gboolean pango_ot_ruleset_description_equal (const PangoOTRulesetDescription *desc1,
|
|
Packit |
0ec9dd |
const PangoOTRulesetDescription *desc2) G_GNUC_PURE;
|
|
Packit |
0ec9dd |
|
|
Packit |
0ec9dd |
PANGO_DEPRECATED
|
|
Packit |
0ec9dd |
PangoOTRulesetDescription *pango_ot_ruleset_description_copy (const PangoOTRulesetDescription *desc);
|
|
Packit |
0ec9dd |
|
|
Packit |
0ec9dd |
PANGO_DEPRECATED
|
|
Packit |
0ec9dd |
void pango_ot_ruleset_description_free (PangoOTRulesetDescription *desc);
|
|
Packit |
0ec9dd |
|
|
Packit |
0ec9dd |
|
|
Packit |
0ec9dd |
#endif /* PANGO_ENABLE_ENGINE */
|
|
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0ec9dd |
|
|
Packit |
0ec9dd |
G_END_DECLS
|
|
Packit |
0ec9dd |
|
|
Packit |
0ec9dd |
#endif /* __PANGO_OT_H__ */
|