1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
|
/* Pango
* pango-ot.h:
*
* Copyright (C) 2000,2007 Red Hat Software
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __PANGO_OT_H__
#define __PANGO_OT_H__
#include <pango/pangofc-font.h>
#include <pango/pango-glyph.h>
#include <pango/pango-font.h>
#include <pango/pango-script.h>
#include <pango/pango-language.h>
G_BEGIN_DECLS
#ifdef PANGO_ENABLE_ENGINE
typedef guint32 PangoOTTag;
typedef struct _PangoOTInfo PangoOTInfo;
typedef struct _PangoOTBuffer PangoOTBuffer;
typedef struct _PangoOTGlyph PangoOTGlyph;
typedef struct _PangoOTRuleset PangoOTRuleset;
typedef struct _PangoOTFeatureMap PangoOTFeatureMap;
typedef enum
{
PANGO_OT_TABLE_GSUB,
PANGO_OT_TABLE_GPOS
} PangoOTTableType;
#define PANGO_OT_ALL_GLYPHS ((guint) 0xFFFF)
#define PANGO_OT_NO_FEATURE ((guint) 0xFFFF)
#define PANGO_OT_NO_SCRIPT ((guint) 0xFFFF)
#define PANGO_OT_DEFAULT_LANGUAGE ((guint) 0xFFFF)
#define PANGO_OT_TAG_DEFAULT_SCRIPT ((PangoOTTag) (FT_MAKE_TAG ('D', 'F', 'L', 'T')))
#define PANGO_OT_TAG_DEFAULT_LANGUAGE ((PangoOTTag) (FT_MAKE_TAG ('d', 'f', 'l', 't')))
/* Note that this must match HB_GlyphItem */
struct _PangoOTGlyph
{
guint glyph;
guint properties;
guint cluster;
gushort component;
gushort ligID;
gushort property_cache; /* Internal */
};
struct _PangoOTFeatureMap
{
char feature_name[5];
gulong property_bit;
};
PangoOTInfo *pango_ot_info_get (FT_Face face);
gboolean pango_ot_info_find_script (PangoOTInfo *info,
PangoOTTableType table_type,
PangoOTTag script_tag,
guint *script_index);
gboolean pango_ot_info_find_language (PangoOTInfo *info,
PangoOTTableType table_type,
guint script_index,
PangoOTTag language_tag,
guint *language_index,
guint *required_feature_index);
gboolean pango_ot_info_find_feature (PangoOTInfo *info,
PangoOTTableType table_type,
PangoOTTag feature_tag,
guint script_index,
guint language_index,
guint *feature_index);
PangoOTTag *pango_ot_info_list_scripts (PangoOTInfo *info,
PangoOTTableType table_type);
PangoOTTag *pango_ot_info_list_languages (PangoOTInfo *info,
PangoOTTableType table_type,
guint script_index,
PangoOTTag language_tag);
PangoOTTag *pango_ot_info_list_features (PangoOTInfo *info,
PangoOTTableType table_type,
PangoOTTag tag,
guint script_index,
guint language_index);
PangoOTBuffer *pango_ot_buffer_new (PangoFcFont *font);
void pango_ot_buffer_destroy (PangoOTBuffer *buffer);
void pango_ot_buffer_clear (PangoOTBuffer *buffer);
void pango_ot_buffer_set_rtl (PangoOTBuffer *buffer,
gboolean rtl);
void pango_ot_buffer_add_glyph (PangoOTBuffer *buffer,
guint glyph,
guint properties,
guint cluster);
void pango_ot_buffer_get_glyphs (const PangoOTBuffer *buffer,
PangoOTGlyph **glyphs,
int *n_glyphs);
void pango_ot_buffer_output (const PangoOTBuffer *buffer,
PangoGlyphString *glyphs);
void pango_ot_buffer_set_zero_width_marks (PangoOTBuffer *buffer,
gboolean zero_width_marks);
PangoOTRuleset *pango_ot_ruleset_new (PangoOTInfo *info);
PangoOTRuleset *pango_ot_ruleset_new_for (PangoOTInfo *info,
PangoScript script,
PangoLanguage *language);
void pango_ot_ruleset_add_feature (PangoOTRuleset *ruleset,
PangoOTTableType table_type,
guint feature_index,
gulong property_bit);
gboolean pango_ot_ruleset_maybe_add_feature (PangoOTRuleset *ruleset,
PangoOTTableType table_type,
PangoOTTag feature_tag,
gulong property_bit);
int pango_ot_ruleset_maybe_add_features (PangoOTRuleset *ruleset,
PangoOTTableType table_type,
const PangoOTFeatureMap *features,
int n_features);
void pango_ot_ruleset_substitute (const PangoOTRuleset *ruleset,
PangoOTBuffer *buffer);
void pango_ot_ruleset_position (const PangoOTRuleset *ruleset,
PangoOTBuffer *buffer);
PangoScript pango_ot_tag_to_script (PangoOTTag script_tag);
PangoOTTag pango_ot_tag_from_script (PangoScript script);
PangoLanguage* pango_ot_tag_to_language (PangoOTTag language_tag);
PangoOTTag pango_ot_tag_from_language (PangoLanguage *language);
#endif /* PANGO_ENABLE_ENGINE */
G_END_DECLS
#endif /* __PANGO_OT_H__ */
|
