gobject/gobject.h

   1 /* GObject - GLib Type, Object, Parameter and Signal Library
   2  * Copyright (C) 1998, 1999, 2000 Tim Janik and Red Hat, Inc.
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General
  15  * Public License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19 #ifndef __G_OBJECT_H__
  20 #define __G_OBJECT_H__
  21
  22 #include        <gobject/gtype.h>
  23 #include        <gobject/gvalue.h>
  24 #include        <gobject/gparam.h>
  25 #include        <gobject/gclosure.h>
  26
  27
  28 #ifdef __cplusplus
  29 extern "C" {
  30 #endif /* __cplusplus */
  31
  32
  33 /* --- type macros --- */
  34 #define G_TYPE_IS_OBJECT(type)     (G_TYPE_FUNDAMENTAL (type) == G_TYPE_OBJECT)
  35 #define G_OBJECT(object)           (G_TYPE_CHECK_INSTANCE_CAST ((object), G_TYPE_OBJECT, GObject))
  36 #define G_OBJECT_CLASS(class)      (G_TYPE_CHECK_CLASS_CAST ((class), G_TYPE_OBJECT, GObjectClass))
  37 #define G_IS_OBJECT(object)        (G_TYPE_CHECK_INSTANCE_TYPE ((object), G_TYPE_OBJECT))
  38 #define G_IS_OBJECT_CLASS(class)   (G_TYPE_CHECK_CLASS_TYPE ((class), G_TYPE_OBJECT))
  39 #define G_OBJECT_GET_CLASS(object) (G_TYPE_INSTANCE_GET_CLASS ((object), G_TYPE_OBJECT, GObjectClass))
  40 #define G_OBJECT_TYPE(object)      (G_TYPE_FROM_INSTANCE (object))
  41 #define G_OBJECT_TYPE_NAME(object) (g_type_name (G_OBJECT_TYPE (object)))
  42 #define G_OBJECT_CLASS_TYPE(class) (G_TYPE_FROM_CLASS (class))
  43 #define G_OBJECT_CLASS_NAME(class) (g_type_name (G_OBJECT_CLASS_TYPE (class)))
  44 #define G_IS_VALUE_OBJECT(value)   (G_TYPE_CHECK_VALUE_TYPE ((value), G_TYPE_OBJECT))
  45
  46 #define G_NOTIFY_PRIORITY          (G_PRIORITY_HIGH_IDLE + 20)
  47
  48
  49 /* --- typedefs & structures --- */
  50 typedef struct _GObject               GObject;
  51 typedef struct _GObjectClass          GObjectClass;
  52 typedef struct _GObjectConstructParam GObjectConstructParam;
  53 typedef void (*GObjectGetParamFunc)     (GObject      *object,
  54                                          guint         param_id,
  55                                          GValue       *value,
  56                                          GParamSpec   *pspec,
  57                                          const gchar  *trailer);
  58 typedef void (*GObjectSetParamFunc)     (GObject      *object,
  59                                          guint         param_id,
  60                                          const GValue *value,
  61                                          GParamSpec   *pspec,
  62                                          const gchar  *trailer);
  63 typedef void (*GObjectFinalizeFunc)     (GObject      *object);
  64 struct  _GObject
  65 {
  66   GTypeInstance g_type_instance;
  67
  68   /*< private >*/
  69   guint         ref_count;
  70   GData        *qdata;
  71 };
  72 struct  _GObjectClass
  73 {
  74   GTypeClass   g_type_class;
  75
  76   guint        n_param_specs;
  77   GParamSpec **param_specs;
  78
  79   GObject*   (*constructor)     (GType                  type, // FIXME!!!
  80                                  guint                  n_construct_params,
  81                                  GObjectConstructParam *construct_params);
  82   void       (*get_param)               (GObject        *object,
  83                                          guint           param_id,
  84                                          GValue         *value,
  85                                          GParamSpec     *pspec,
  86                                          const gchar    *trailer);
  87   void       (*set_param)               (GObject        *object,
  88                                          guint           param_id,
  89                                          const GValue   *value,
  90                                          GParamSpec     *pspec,
  91                                          const gchar    *trailer);
  92   void       (*queue_param_changed)     (GObject        *object,
  93                                          GParamSpec     *pspec);
  94   void       (*dispatch_param_changed)  (GObject        *object,
  95                                          GParamSpec     *pspec);
  96   void       (*shutdown)                (GObject        *object);
  97   void       (*finalize)                (GObject        *object);
  98 };
  99 struct _GObjectConstructParam
 100 {
 101   GParamSpec *pspec;
 102   GValue     *value;
 103   gchar      *trailer;
 104 };
 105
 106
 107 /* --- prototypes --- */
 108 void        g_object_class_install_param   (GObjectClass   *oclass,
 109                                             guint           param_id,
 110                                             GParamSpec     *pspec /* +1 ref */);
 111 GParamSpec* g_object_class_find_param_spec (GObjectClass   *oclass,
 112                                             const gchar    *param_name);
 113 gpointer    g_object_new                   (GType           object_type,
 114                                             const gchar    *first_param_name,
 115                                             ...);
 116 gpointer    g_object_new_valist            (GType           object_type,
 117                                             const gchar    *first_param_name,
 118                                             va_list         var_args);
 119 void        g_object_set                   (GObject        *object,
 120                                             const gchar    *first_param_name,
 121                                             ...);
 122 void        g_object_get                   (GObject        *object,
 123                                             const gchar    *first_param_name,
 124                                             ...);
 125 void        g_object_set_valist            (GObject        *object,
 126                                             const gchar    *first_param_name,
 127                                             va_list         var_args);
 128 void        g_object_get_valist            (GObject        *object,
 129                                             const gchar    *first_param_name,
 130                                             va_list         var_args);
 131 void        g_object_set_param             (GObject        *object,
 132                                             const gchar    *param_name,
 133                                             const GValue   *value);
 134 void        g_object_get_param             (GObject        *object,
 135                                             const gchar    *param_name,
 136                                             GValue         *value);
 137 void        g_object_queue_param_changed   (GObject        *object,
 138                                             const gchar    *param_name);
 139 GObject*    g_object_ref                   (GObject        *object);
 140 void        g_object_unref                 (GObject        *object);
 141 gpointer    g_object_get_qdata             (GObject        *object,
 142                                             GQuark          quark);
 143 void        g_object_set_qdata             (GObject        *object,
 144                                             GQuark          quark,
 145                                             gpointer        data);
 146 void        g_object_set_qdata_full        (GObject        *object,
 147                                             GQuark          quark,
 148                                             gpointer        data,
 149                                             GDestroyNotify  destroy);
 150 gpointer    g_object_steal_qdata           (GObject        *object,
 151                                             GQuark          quark);
 152 void        g_object_watch_closure         (GObject        *object,
 153                                             GClosure       *closure);
 154 GClosure*   g_cclosure_new_object          (GCallback       callback_func,
 155                                             gpointer        object);
 156 GClosure*   g_cclosure_new_object_swap     (GCallback       callback_func,
 157                                             gpointer        object);
 158 GClosure*   g_closure_new_object           (guint           sizeof_closure,
 159                                             GObject        *object);
 160 void        g_value_set_object             (GValue         *value,
 161                                             GObject        *v_object);
 162 GObject*    g_value_get_object             (const GValue   *value);
 163 GObject*    g_value_dup_object             (const GValue   *value);
 164
 165
 166 /* --- implementation macros --- */
 167 #define G_WARN_INVALID_PARAM_ID(object, param_id, pspec) \
 168 G_STMT_START { \
 169   GObject *_object = (GObject*) (object); \
 170   GParamSpec *_pspec = (GParamSpec*) (pspec); \
 171   guint _param_id = (param_id); \
 172   g_warning ("%s: invalid parameter id %u for \"%s\" of type `%s' in `%s'", \
 173              G_STRLOC, \
 174              _param_id, \
 175              _pspec->name, \
 176              g_type_name (G_PARAM_SPEC_TYPE (_pspec)), \
 177              BSE_OBJECT_TYPE_NAME (_object)); \
 178 } G_STMT_END
 179
 180
 181
 182 #ifdef __cplusplus
 183 }
 184 #endif /* __cplusplus */
 185
 186 #endif /* __G_OBJECT_H__ */