This repository has been archived by the owner on Nov 17, 2020. It is now read-only.
/
gparam.h
235 lines (205 loc) · 8.44 KB
/
gparam.h
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
/* GObject - GLib Type, Object, Parameter and Signal Library
* Copyright (C) 1997-1999, 2000-2001 Tim Janik and Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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.
*
* gparam.h: GParamSpec base class implementation
*/
#if !defined (__GLIB_GOBJECT_H_INSIDE__) && !defined (GOBJECT_COMPILATION)
#error "Only <glib-object.h> can be included directly."
#endif
#ifndef __G_PARAM_H__
#define __G_PARAM_H__
#include <gobject/gvalue.h>
G_BEGIN_DECLS
/* --- standard type macros --- */
#define G_TYPE_IS_PARAM(type) (G_TYPE_FUNDAMENTAL (type) == G_TYPE_PARAM)
#define G_PARAM_SPEC(pspec) (G_TYPE_CHECK_INSTANCE_CAST ((pspec), G_TYPE_PARAM, GParamSpec))
#define G_IS_PARAM_SPEC(pspec) (G_TYPE_CHECK_INSTANCE_TYPE ((pspec), G_TYPE_PARAM))
#define G_PARAM_SPEC_CLASS(pclass) (G_TYPE_CHECK_CLASS_CAST ((pclass), G_TYPE_PARAM, GParamSpecClass))
#define G_IS_PARAM_SPEC_CLASS(pclass) (G_TYPE_CHECK_CLASS_TYPE ((pclass), G_TYPE_PARAM))
#define G_PARAM_SPEC_GET_CLASS(pspec) (G_TYPE_INSTANCE_GET_CLASS ((pspec), G_TYPE_PARAM, GParamSpecClass))
/* --- convenience macros --- */
#define G_PARAM_SPEC_TYPE(pspec) (G_TYPE_FROM_INSTANCE (pspec))
#define G_PARAM_SPEC_TYPE_NAME(pspec) (g_type_name (G_PARAM_SPEC_TYPE (pspec)))
#define G_PARAM_SPEC_VALUE_TYPE(pspec) (G_PARAM_SPEC (pspec)->value_type)
#define G_VALUE_HOLDS_PARAM(value) (G_TYPE_CHECK_VALUE_TYPE ((value), G_TYPE_PARAM))
/* --- flags --- */
typedef enum
{
G_PARAM_READABLE = 1 << 0,
G_PARAM_WRITABLE = 1 << 1,
G_PARAM_CONSTRUCT = 1 << 2,
G_PARAM_CONSTRUCT_ONLY = 1 << 3,
G_PARAM_LAX_VALIDATION = 1 << 4,
G_PARAM_STATIC_NAME = 1 << 5,
#ifndef G_DISABLE_DEPRECATED
G_PARAM_PRIVATE = G_PARAM_STATIC_NAME,
#endif
G_PARAM_STATIC_NICK = 1 << 6,
G_PARAM_STATIC_BLURB = 1 << 7
} GParamFlags;
#define G_PARAM_READWRITE (G_PARAM_READABLE | G_PARAM_WRITABLE)
#define G_PARAM_STATIC_STRINGS (G_PARAM_STATIC_NAME | G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB)
#define G_PARAM_MASK (0x000000ff)
/* bits in the range 0xffffff00 are reserved for 3rd party usage */
#define G_PARAM_USER_SHIFT (8)
/* --- typedefs & structures --- */
typedef struct _GParamSpec GParamSpec;
typedef struct _GParamSpecClass GParamSpecClass;
typedef struct _GParameter GParameter;
typedef struct _GParamSpecPool GParamSpecPool;
struct _GParamSpec
{
GTypeInstance g_type_instance;
gchar *name;
GParamFlags flags;
GType value_type;
GType owner_type; /* class or interface using this property */
/*< private >*/
gchar *_nick;
gchar *_blurb;
GData *qdata;
guint ref_count;
guint param_id; /* sort-criteria */
};
struct _GParamSpecClass
{
GTypeClass g_type_class;
GType value_type;
void (*finalize) (GParamSpec *pspec);
/* GParam methods */
void (*value_set_default) (GParamSpec *pspec,
GValue *value);
gboolean (*value_validate) (GParamSpec *pspec,
GValue *value);
gint (*values_cmp) (GParamSpec *pspec,
const GValue *value1,
const GValue *value2);
/*< private >*/
gpointer dummy[4];
};
struct _GParameter /* auxillary structure for _setv() variants */
{
const gchar *name;
GValue value;
};
/* --- prototypes --- */
GParamSpec* g_param_spec_ref (GParamSpec *pspec);
void g_param_spec_unref (GParamSpec *pspec);
void g_param_spec_sink (GParamSpec *pspec);
GParamSpec* g_param_spec_ref_sink (GParamSpec *pspec);
gpointer g_param_spec_get_qdata (GParamSpec *pspec,
GQuark quark);
void g_param_spec_set_qdata (GParamSpec *pspec,
GQuark quark,
gpointer data);
void g_param_spec_set_qdata_full (GParamSpec *pspec,
GQuark quark,
gpointer data,
GDestroyNotify destroy);
gpointer g_param_spec_steal_qdata (GParamSpec *pspec,
GQuark quark);
GParamSpec* g_param_spec_get_redirect_target (GParamSpec *pspec);
void g_param_value_set_default (GParamSpec *pspec,
GValue *value);
gboolean g_param_value_defaults (GParamSpec *pspec,
GValue *value);
gboolean g_param_value_validate (GParamSpec *pspec,
GValue *value);
gboolean g_param_value_convert (GParamSpec *pspec,
const GValue *src_value,
GValue *dest_value,
gboolean strict_validation);
gint g_param_values_cmp (GParamSpec *pspec,
const GValue *value1,
const GValue *value2);
G_CONST_RETURN gchar* g_param_spec_get_name (GParamSpec *pspec);
G_CONST_RETURN gchar* g_param_spec_get_nick (GParamSpec *pspec);
G_CONST_RETURN gchar* g_param_spec_get_blurb (GParamSpec *pspec);
void g_value_set_param (GValue *value,
GParamSpec *param);
GParamSpec* g_value_get_param (const GValue *value);
GParamSpec* g_value_dup_param (const GValue *value);
void g_value_take_param (GValue *value,
GParamSpec *param);
#ifndef G_DISABLE_DEPRECATED
void g_value_set_param_take_ownership (GValue *value,
GParamSpec *param);
#endif
/* --- convenience functions --- */
typedef struct _GParamSpecTypeInfo GParamSpecTypeInfo;
struct _GParamSpecTypeInfo
{
/* type system portion */
guint16 instance_size; /* obligatory */
guint16 n_preallocs; /* optional */
void (*instance_init) (GParamSpec *pspec); /* optional */
/* class portion */
GType value_type; /* obligatory */
void (*finalize) (GParamSpec *pspec); /* optional */
void (*value_set_default) (GParamSpec *pspec, /* recommended */
GValue *value);
gboolean (*value_validate) (GParamSpec *pspec, /* optional */
GValue *value);
gint (*values_cmp) (GParamSpec *pspec, /* recommended */
const GValue *value1,
const GValue *value2);
};
GType g_param_type_register_static (const gchar *name,
const GParamSpecTypeInfo *pspec_info);
/* For registering builting types */
GType _g_param_type_register_static_constant (const gchar *name,
const GParamSpecTypeInfo *pspec_info,
GType opt_type);
/* --- protected --- */
gpointer g_param_spec_internal (GType param_type,
const gchar *name,
const gchar *nick,
const gchar *blurb,
GParamFlags flags);
GParamSpecPool* g_param_spec_pool_new (gboolean type_prefixing);
void g_param_spec_pool_insert (GParamSpecPool *pool,
GParamSpec *pspec,
GType owner_type);
void g_param_spec_pool_remove (GParamSpecPool *pool,
GParamSpec *pspec);
GParamSpec* g_param_spec_pool_lookup (GParamSpecPool *pool,
const gchar *param_name,
GType owner_type,
gboolean walk_ancestors);
GList* g_param_spec_pool_list_owned (GParamSpecPool *pool,
GType owner_type);
GParamSpec** g_param_spec_pool_list (GParamSpecPool *pool,
GType owner_type,
guint *n_pspecs_p);
/* contracts:
*
* gboolean value_validate (GParamSpec *pspec,
* GValue *value):
* modify value contents in the least destructive way, so
* that it complies with pspec's requirements (i.e.
* according to minimum/maximum ranges etc...). return
* whether modification was necessary.
*
* gint values_cmp (GParamSpec *pspec,
* const GValue *value1,
* const GValue *value2):
* return value1 - value2, i.e. (-1) if value1 < value2,
* (+1) if value1 > value2, and (0) otherwise (equality)
*/
G_END_DECLS
#endif /* __G_PARAM_H__ */