summaryrefslogtreecommitdiff
path: root/pango/pangofc-fontmap.h
blob: 8ae9250ee57dc278d5541f2ee6d209e97e110fbd (plain)
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
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
/* Pango
 * pangofc-fontmap.h: Base fontmap type for fontconfig-based backends
 *
 * Copyright (C) 2003 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_FC_FONT_MAP_H__
#define __PANGO_FC_FONT_MAP_H__

#include <pango/pango.h>
#include <fontconfig/fontconfig.h>
#include <pango/pangofc-decoder.h>
#include <pango/pangofc-font.h>
#include <hb.h>

G_BEGIN_DECLS


/*
 * PangoFcFontMap
 */

#ifdef __GI_SCANNER__
#define PANGO_FC_TYPE_FONT_MAP              (pango_fc_font_map_get_type ())
#define PANGO_FC_FONT_MAP(object)           (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_FC_TYPE_FONT_MAP, PangoFcFontMap))
#define PANGO_FC_IS_FONT_MAP(object)        (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_FC_TYPE_FONT_MAP))
#else
#define PANGO_TYPE_FC_FONT_MAP              (pango_fc_font_map_get_type ())
#define PANGO_FC_FONT_MAP(object)           (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_FC_FONT_MAP, PangoFcFontMap))
#define PANGO_IS_FC_FONT_MAP(object)        (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_FC_FONT_MAP))
#endif

typedef struct _PangoFcFontMap        PangoFcFontMap;
typedef struct _PangoFcFontMapClass   PangoFcFontMapClass;
typedef struct _PangoFcFontMapPrivate PangoFcFontMapPrivate;

PANGO_AVAILABLE_IN_ALL
GType pango_fc_font_map_get_type (void) G_GNUC_CONST;

PANGO_AVAILABLE_IN_1_4
void           pango_fc_font_map_cache_clear    (PangoFcFontMap *fcfontmap);

PANGO_AVAILABLE_IN_1_38
void
pango_fc_font_map_config_changed (PangoFcFontMap *fcfontmap);

PANGO_AVAILABLE_IN_1_38
void
pango_fc_font_map_set_config (PangoFcFontMap *fcfontmap,
			      FcConfig       *fcconfig);
PANGO_AVAILABLE_IN_1_38
FcConfig *
pango_fc_font_map_get_config (PangoFcFontMap *fcfontmap);

/**
 * PangoFcDecoderFindFunc:
 * @pattern: a fully resolved `FcPattern` specifying the font on the system
 * @user_data: user data passed to
 *   [method@PangoFc.FontMap.add_decoder_find_func]
 *
 * Callback function passed to [method@PangoFc.FontMap.add_decoder_find_func].
 *
 * Return value: a new reference to a custom decoder for this pattern,
 *  or %NULL if the default decoder handling should be used.
 **/
typedef PangoFcDecoder * (*PangoFcDecoderFindFunc) (FcPattern *pattern,
						    gpointer   user_data);

PANGO_AVAILABLE_IN_1_6
void pango_fc_font_map_add_decoder_find_func (PangoFcFontMap        *fcfontmap,
					      PangoFcDecoderFindFunc findfunc,
					      gpointer               user_data,
					      GDestroyNotify         dnotify);
PANGO_AVAILABLE_IN_1_26
PangoFcDecoder *pango_fc_font_map_find_decoder (PangoFcFontMap *fcfontmap,
					        FcPattern      *pattern);

PANGO_AVAILABLE_IN_1_4
PangoFontDescription *pango_fc_font_description_from_pattern (FcPattern *pattern,
							      gboolean   include_size);

#ifndef PANGO_DISABLE_DEPRECATED
PANGO_DEPRECATED_IN_1_22_FOR(pango_font_map_create_context)
PangoContext * pango_fc_font_map_create_context (PangoFcFontMap *fcfontmap);
#endif
PANGO_AVAILABLE_IN_1_4
void           pango_fc_font_map_shutdown       (PangoFcFontMap *fcfontmap);


PANGO_AVAILABLE_IN_1_44
hb_face_t * pango_fc_font_map_get_hb_face (PangoFcFontMap *fcfontmap,
                                           PangoFcFont    *fcfont);

/**
 * PangoFcSubstituteFunc:
 * @pattern: the FcPattern to tweak.
 * @data: user data.
 *
 * Function type for doing final config tweaking on prepared `FcPattern`s.
 */
typedef void (*PangoFcSubstituteFunc) (FcPattern *pattern,
				       gpointer   data);

/**
 * pango_fc_font_map_set_default_substitute:
 * @fontmap: a `PangoFcFontMap`
 * @func: function to call to to do final config tweaking
 *        on `FcPattern` objects.
 * @data: data to pass to @func
 * @notify: function to call when @data is no longer used.
 *
 * Sets a function that will be called to do final configuration
 * substitution on a `FcPattern` before it is used to load
 * the font.
 *
 * This function can be used to do things like set
 * hinting and antialiasing options.
 *
 * Since: 1.48
 */
PANGO_AVAILABLE_IN_1_48
void pango_fc_font_map_set_default_substitute (PangoFcFontMap        *fontmap,
					       PangoFcSubstituteFunc func,
					       gpointer              data,
					       GDestroyNotify        notify);

/**
 * pango_fc_font_map_substitute_changed:
 * @fontmap: a `PangoFcFontMap`
 *
 * Call this function any time the results of the default
 * substitution function set with
 * [method@PangoFc.FontMap.set_default_substitute] change.
 *
 * That is, if your substitution function will return different
 * results for the same input pattern, you must call this function.
 *
 * Since: 1.48
 */
PANGO_AVAILABLE_IN_1_48
void pango_fc_font_map_substitute_changed (PangoFcFontMap *fontmap);

/**
 * PANGO_FC_GRAVITY:
 *
 * Fontconfig property that Pango sets on any
 * fontconfig pattern it passes to fontconfig
 * if a `PangoGravity` other than %PANGO_GRAVITY_SOUTH
 * is desired.
 *
 * The property will have a `PangoGravity` value as a string,
 * like "east". This can be used to write fontconfig configuration
 * rules to choose different fonts for horizontal and vertical
 * writing directions.
 *
 * Since: 1.20
 */
#define PANGO_FC_GRAVITY "pangogravity"

/**
 * PANGO_FC_VERSION:
 *
 * Fontconfig property that Pango sets on any
 * fontconfig pattern it passes to fontconfig.
 *
 * The property will have an integer value equal to what
 * [func@Pango.version] returns. This can be used to write
 * fontconfig configuration rules that only affect certain
 * pango versions (or only pango-using applications, or only
 * non-pango-using applications).
 *
 * Since: 1.20
 */
#define PANGO_FC_VERSION "pangoversion"

/**
 * PANGO_FC_PRGNAME:
 *
 * Fontconfig property that Pango sets on any
 * fontconfig pattern it passes to fontconfig.
 *
 * The property will have a string equal to what
 * g_get_prgname() returns. This can be used to write
 * fontconfig configuration rules that only affect
 * certain applications.
 *
 * This is equivalent to FC_PRGNAME in versions of
 * fontconfig that have that.
 *
 * Since: 1.24
 */
#define PANGO_FC_PRGNAME "prgname"

/**
 * PANGO_FC_FONT_FEATURES:
 *
 * Fontconfig property that Pango reads from font
 * patterns to populate list of OpenType features
 * to be enabled for the font by default.
 *
 * The property will have a number of string elements,
 * each of which is the OpenType feature tag of one feature
 * to enable.
 *
 * This is equivalent to FC_FONT_FEATURES in versions of
 * fontconfig that have that.
 *
 * Since: 1.34
 */
#define PANGO_FC_FONT_FEATURES "fontfeatures"

/**
 * PANGO_FC_FONT_VARIATIONS:
 *
 * Fontconfig property that Pango reads from font
 * patterns to populate list of OpenType font variations
 * to be used for a font.
 *
 * The property will have a string elements, each of which
 * a comma-separated list of OpenType axis setting of the
 * form AXIS=VALUE.
 */
#define PANGO_FC_FONT_VARIATIONS "fontvariations"

G_END_DECLS

#endif /* __PANGO_FC_FONT_MAP_H__ */