File: pango-fontset.h

package info (click to toggle)
pango1.0 1.42.4-8~deb10u1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, buster, sid
  • size: 9,564 kB
  • sloc: ansic: 42,694; sh: 4,360; makefile: 1,075; python: 305; perl: 56; cpp: 20
file content (177 lines) | stat: -rw-r--r-- 5,773 bytes parent folder | download | duplicates (2)
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
/* Pango
 * pango-fontset.h: Font set handling
 *
 * Copyright (C) 2001 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_FONTSET_H__
#define __PANGO_FONTSET_H__

#include <pango/pango-coverage.h>
#include <pango/pango-types.h>

#include <glib-object.h>

G_BEGIN_DECLS

/*
 * PangoFontset
 */

/**
 * PANGO_TYPE_FONTSET:
 *
 * The #GObject type for #PangoFontset.
 */
#define PANGO_TYPE_FONTSET              (pango_fontset_get_type ())
#define PANGO_FONTSET(object)           (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_FONTSET, PangoFontset))
#define PANGO_IS_FONTSET(object)        (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_FONTSET))

PANGO_AVAILABLE_IN_ALL
GType pango_fontset_get_type (void) G_GNUC_CONST;

typedef struct _PangoFontset        PangoFontset;

/**
 * PangoFontsetForeachFunc:
 * @fontset: a #PangoFontset
 * @font: a font from @fontset
 * @user_data: callback data
 *
 * A callback function used by pango_fontset_foreach() when enumerating
 * the fonts in a fontset.
 *
 * Returns: if %TRUE, stop iteration and return immediately.
 *
 * Since: 1.4
 **/
typedef gboolean (*PangoFontsetForeachFunc) (PangoFontset  *fontset,
					     PangoFont     *font,
					     gpointer       user_data);

PANGO_AVAILABLE_IN_ALL
PangoFont *       pango_fontset_get_font    (PangoFontset           *fontset,
					     guint                   wc);
PANGO_AVAILABLE_IN_ALL
PangoFontMetrics *pango_fontset_get_metrics (PangoFontset           *fontset);
PANGO_AVAILABLE_IN_1_4
void              pango_fontset_foreach     (PangoFontset           *fontset,
					     PangoFontsetForeachFunc func,
					     gpointer                data);

#ifdef PANGO_ENABLE_BACKEND

typedef struct _PangoFontsetClass   PangoFontsetClass;

#define PANGO_FONTSET_CLASS(klass)      (G_TYPE_CHECK_CLASS_CAST ((klass), PANGO_TYPE_FONTSET, PangoFontsetClass))
#define PANGO_IS_FONTSET_CLASS(klass)   (G_TYPE_CHECK_CLASS_TYPE ((klass), PANGO_TYPE_FONTSET))
#define PANGO_FONTSET_GET_CLASS(obj)    (G_TYPE_INSTANCE_GET_CLASS ((obj), PANGO_TYPE_FONTSET, PangoFontsetClass))

/**
 * PangoFontset:
 *
 * A #PangoFontset represents a set of #PangoFont to use
 * when rendering text. It is the result of resolving a
 * #PangoFontDescription against a particular #PangoContext.
 * It has operations for finding the component font for
 * a particular Unicode character, and for finding a composite
 * set of metrics for the entire fontset.
 */
struct _PangoFontset
{
  GObject parent_instance;
};

/**
 * PangoFontsetClass:
 * @parent_class: parent #GObjectClass.
 * @get_font: a function to get the font in the fontset that contains the
 * best glyph for the given Unicode character; see pango_fontset_get_font().
 * @get_metrics: a function to get overall metric information for the fonts
 * in the fontset; see pango_fontset_get_metrics().
 * @get_language: a function to get the language of the fontset.
 * @foreach: a function to loop over the fonts in the fontset. See
 * pango_fontset_foreach().
 *
 * The #PangoFontsetClass structure holds the virtual functions for
 * a particular #PangoFontset implementation.
 */
struct _PangoFontsetClass
{
  GObjectClass parent_class;

  /*< public >*/

  PangoFont *       (*get_font)     (PangoFontset     *fontset,
				     guint             wc);

  PangoFontMetrics *(*get_metrics)  (PangoFontset     *fontset);
  PangoLanguage *   (*get_language) (PangoFontset     *fontset);
  void              (*foreach)      (PangoFontset           *fontset,
				     PangoFontsetForeachFunc func,
				     gpointer                data);

  /*< private >*/

  /* Padding for future expansion */
  void (*_pango_reserved1) (void);
  void (*_pango_reserved2) (void);
  void (*_pango_reserved3) (void);
  void (*_pango_reserved4) (void);
};

/*
 * PangoFontsetSimple
 */

/**
 * PANGO_TYPE_FONTSET_SIMPLE:
 *
 * The #GObject type for #PangoFontsetSimple.
 */
/**
 * PangoFontsetSimple:
 *
 * #PangoFontsetSimple is a implementation of the abstract
 * #PangoFontset base class in terms of an array of fonts,
 * which the creator provides when constructing the
 * #PangoFontsetSimple.
 */
#define PANGO_TYPE_FONTSET_SIMPLE       (pango_fontset_simple_get_type ())
#define PANGO_FONTSET_SIMPLE(object)    (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_FONTSET_SIMPLE, PangoFontsetSimple))
#define PANGO_IS_FONTSET_SIMPLE(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_FONTSET_SIMPLE))

typedef struct _PangoFontsetSimple  PangoFontsetSimple;
typedef struct _PangoFontsetSimpleClass  PangoFontsetSimpleClass;

PANGO_AVAILABLE_IN_ALL
GType pango_fontset_simple_get_type (void) G_GNUC_CONST;

PANGO_AVAILABLE_IN_ALL
PangoFontsetSimple * pango_fontset_simple_new    (PangoLanguage      *language);
PANGO_AVAILABLE_IN_ALL
void                 pango_fontset_simple_append (PangoFontsetSimple *fontset,
						  PangoFont          *font);
PANGO_AVAILABLE_IN_ALL
int                  pango_fontset_simple_size   (PangoFontsetSimple *fontset);

#endif /* PANGO_ENABLE_BACKEND */

G_END_DECLS

#endif /* __PANGO_FONTSET_H__ */