* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
+
+/*
+ * Modified by the GTK+ Team and others 1997-1999. See the AUTHORS
+ * file for a list of people on the GTK+ Team. See the ChangeLog
+ * files for a list of changes. These files are distributed with
+ * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
+ */
+
#ifndef __GTK_TYPE_UTILS_H__
#define __GTK_TYPE_UTILS_H__
-#include <gdk/gdk.h>
+#include <glib.h>
#ifdef __cplusplus
extern "C" {
-#pragma }
#endif /* __cplusplus */
*/
typedef enum
{
- G_SV (GTK_TYPE_INVALID, invalid),
- G_SV (GTK_TYPE_NONE, none),
- G_SV (GTK_TYPE_CHAR, char),
- G_SV (GTK_TYPE_BOOL, bool),
- G_SV (GTK_TYPE_INT, int),
- G_SV (GTK_TYPE_UINT, uint),
- G_SV (GTK_TYPE_LONG, long),
- G_SV (GTK_TYPE_ULONG, ulong),
- G_SV (GTK_TYPE_FLOAT, float),
- G_SV (GTK_TYPE_DOUBLE, double),
- G_SV (GTK_TYPE_STRING, string),
- G_SV (GTK_TYPE_ENUM, enum),
- G_SV (GTK_TYPE_FLAGS, flags),
- G_SV (GTK_TYPE_BOXED, boxed),
- G_SV (GTK_TYPE_FOREIGN, foreign),
- G_SV (GTK_TYPE_CALLBACK, callback),
- G_SV (GTK_TYPE_ARGS, args),
+ GTK_TYPE_INVALID,
+ GTK_TYPE_NONE,
- G_SV (GTK_TYPE_POINTER, pointer),
-
- /* It'd be great if GTK_TYPE_POINTER and GTK_TYPE_C_CALLBACK
- * could be removed eventually
- */
- G_SV (GTK_TYPE_SIGNAL, signal),
- G_SV (GTK_TYPE_C_CALLBACK, c-callback),
+ /* flat types */
+ GTK_TYPE_CHAR,
+ GTK_TYPE_UCHAR,
+ GTK_TYPE_BOOL,
+ GTK_TYPE_INT,
+ GTK_TYPE_UINT,
+ GTK_TYPE_LONG,
+ GTK_TYPE_ULONG,
+ GTK_TYPE_FLOAT,
+ GTK_TYPE_DOUBLE,
+ GTK_TYPE_STRING,
+ GTK_TYPE_ENUM,
+ GTK_TYPE_FLAGS,
+ GTK_TYPE_BOXED,
+ GTK_TYPE_POINTER,
- G_SV (GTK_TYPE_OBJECT, object)
+ /* structured types */
+ GTK_TYPE_SIGNAL,
+ GTK_TYPE_ARGS,
+ GTK_TYPE_CALLBACK,
+ GTK_TYPE_C_CALLBACK,
+ GTK_TYPE_FOREIGN,
-} G_ENUM (GtkFundamentalType);
+ /* base type node of the object system */
+ GTK_TYPE_OBJECT
+} GtkFundamentalType;
+
+/* bounds definitions for type sets, these are provided to distinct
+ * between fundamental types with if() statements, and to build
+ * up foreign fundamentals
+ */
+#define GTK_TYPE_FLAT_FIRST GTK_TYPE_CHAR
+#define GTK_TYPE_FLAT_LAST GTK_TYPE_POINTER
+#define GTK_TYPE_STRUCTURED_FIRST GTK_TYPE_SIGNAL
+#define GTK_TYPE_STRUCTURED_LAST GTK_TYPE_FOREIGN
+#define GTK_TYPE_FUNDAMENTAL_LAST GTK_TYPE_OBJECT
+#define GTK_TYPE_FUNDAMENTAL_MAX (32)
+
+
+/* retrive a structure offset */
+#ifdef offsetof
+#define GTK_STRUCT_OFFSET(struct, field) ((gint) offsetof (struct, field))
+#else /* !offsetof */
+#define GTK_STRUCT_OFFSET(struct, field) ((gint) ((gchar*) &((struct*) 0)->field))
+#endif /* !offsetof */
+
+/* The debugging versions of the casting macros make sure the cast is "ok"
+ * before proceeding, but they are definately slower than their less
+ * careful counterparts as they involve extra ``is a'' checks.
+ */
+#ifdef GTK_NO_CHECK_CASTS
+# define GTK_CHECK_CAST(tobj, cast_type, cast) ((cast*) (tobj))
+# define GTK_CHECK_CLASS_CAST(tclass,cast_type,cast) ((cast*) (tclass))
+#else /* !GTK_NO_CHECK_CASTS */
+# define GTK_CHECK_CAST(tobj, cast_type, cast) \
+ ((cast*) gtk_type_check_object_cast ((GtkTypeObject*) (tobj), (cast_type)))
+# define GTK_CHECK_CLASS_CAST(tclass,cast_type,cast) \
+ ((cast*) gtk_type_check_class_cast ((GtkTypeClass*) (tclass), (cast_type)))
+#endif /* GTK_NO_CHECK_CASTS */
+
+/* Determines whether `type_object' and `type_class' are a type of `otype'.
+ */
+#define GTK_CHECK_TYPE(type_object, otype) ( \
+ ((GtkTypeObject*) (type_object)) != NULL && \
+ GTK_CHECK_CLASS_TYPE (((GtkTypeObject*) (type_object))->klass, (otype)) \
+)
+#define GTK_CHECK_CLASS_TYPE(type_class, otype) ( \
+ ((GtkTypeClass*) (type_class)) != NULL && \
+ gtk_type_is_a (((GtkTypeClass*) (type_class))->type, (otype)) \
+)
+
+
+
+
+/* A GtkType holds a unique type id
+ */
typedef guint GtkType;
+typedef struct _GtkTypeObject GtkTypeObject;
+typedef struct _GtkTypeClass GtkTypeClass;
+
+
/* Builtin Types
*/
#include <gtk/gtktypebuiltins.h>
+#define GTK_TYPE_IDENTIFIER (gtk_identifier_get_type ())
+GtkType gtk_identifier_get_type (void);
+
/* Macros
*/
-#define GTK_TYPE_MAKE(parent_t, seqno) (((seqno) << 8) | GTK_FUNDAMENTAL_TYPE (parent_t))
-#define GTK_FUNDAMENTAL_TYPE(type) ((GtkFundamentalType) ((type) & 0xFF))
-#define GTK_TYPE_SEQNO(type) ((type) > 0xFF ? (type) >> 8 : (type))
+#define GTK_TYPE_MAKE(parent_t, seqno) (((seqno) << 8) | GTK_FUNDAMENTAL_TYPE (parent_t))
+#define GTK_FUNDAMENTAL_TYPE(type) ((GtkFundamentalType) ((type) & 0xFF))
+#define GTK_TYPE_SEQNO(type) ((type) > 0xFF ? (type) >> 8 : (type))
typedef struct _GtkArg GtkArg;
typedef struct _GtkObject GtkObject; /* forward declaration of object type */
typedef struct _GtkTypeInfo GtkTypeInfo;
+typedef struct _GtkTypeQuery GtkTypeQuery;
typedef struct _GtkEnumValue GtkEnumValue;
typedef struct _GtkEnumValue GtkFlagValue;
-typedef void (*GtkClassInitFunc) (gpointer klass);
-typedef void (*GtkObjectInitFunc) (gpointer object);
-typedef void (*GtkArgGetFunc) (GtkObject *object, GtkArg *arg, guint arg_id);
-typedef void (*GtkArgSetFunc) (GtkObject *object, GtkArg *arg, guint arg_id);
-typedef gint (*GtkFunction) (gpointer data);
+
+#define GTK_SIGNAL_FUNC(f) ((GtkSignalFunc) f)
+
+typedef void (*GtkClassInitFunc) (gpointer klass);
+typedef void (*GtkObjectInitFunc) (gpointer object,
+ gpointer klass);
+typedef void (*GtkSignalFunc) ();
+typedef gint (*GtkFunction) (gpointer data);
+typedef void (*GtkDestroyNotify) (gpointer data);
typedef void (*GtkCallbackMarshal) (GtkObject *object,
- gpointer data,
- guint n_args,
- GtkArg *args);
-typedef void (*GtkDestroyNotify) (gpointer data);
+ gpointer data,
+ guint n_args,
+ GtkArg *args);
+typedef void (*GtkSignalMarshaller) (GtkObject *object,
+ GtkSignalFunc func,
+ gpointer func_data,
+ GtkArg *args);
+
+/* deprecated */
+typedef void (*GtkArgGetFunc) (GtkObject*, GtkArg*, guint);
+typedef void (*GtkArgSetFunc) (GtkObject*, GtkArg*, guint);
+
+
+/* A GtkTypeObject defines the minimum structure requirements
+ * for type instances. Type instances returned from gtk_type_new ()
+ * and initialized through a GtkObjectInitFunc need to directly inherit
+ * from this structure or at least copy its fields one by one.
+ */
+struct _GtkTypeObject
+{
+ /* A pointer to the objects class. This will actually point to
+ * the derived objects class struct (which will be derived from
+ * GtkTypeClass).
+ */
+ GtkTypeClass *klass;
+};
+
+
+/* A GtkTypeClass defines the minimum structure requirements for
+ * a types class. Classes returned from gtk_type_class () and
+ * initialized through a GtkClassInitFunc need to directly inherit
+ * from this structure or at least copy its fields one by one.
+ */
+struct _GtkTypeClass
+{
+ /* The type identifier for the objects class. There is
+ * one unique identifier per class.
+ */
+ GtkType type;
+};
+
struct _GtkArg
{
GtkType type;
gchar *name;
-
+
+ /* this union only defines the required storage types for
+ * the possibile values, thus there is no gint enum_data field,
+ * because that would just be a mere alias for gint int_data.
+ * use the GTK_VALUE_*() and GTK_RETLOC_*() macros to access
+ * the discrete memebers.
+ */
union {
+ /* flat values */
gchar char_data;
+ guchar uchar_data;
+ gboolean bool_data;
gint int_data;
guint uint_data;
- gint bool_data;
glong long_data;
gulong ulong_data;
gfloat float_data;
gchar *string_data;
gpointer pointer_data;
GtkObject *object_data;
+
+ /* structured values */
struct {
- GtkCallbackMarshal marshal;
- gpointer data;
- GtkDestroyNotify notify;
- } callback_data;
- struct {
- gpointer data;
- GtkDestroyNotify notify;
- } foreign_data;
+ GtkSignalFunc f;
+ gpointer d;
+ } signal_data;
struct {
gint n_args;
GtkArg *args;
} args_data;
struct {
- GtkFunction f;
- gpointer d;
- } signal_data;
+ GtkCallbackMarshal marshal;
+ gpointer data;
+ GtkDestroyNotify notify;
+ } callback_data;
struct {
GtkFunction func;
gpointer func_data;
} c_callback_data;
+ struct {
+ gpointer data;
+ GtkDestroyNotify notify;
+ } foreign_data;
} d;
};
+/* argument value access macros, these must not contain casts,
+ * to allow the usage of these macros in combination with the
+ * adress operator, e.g. >K_VALUE_CHAR (*arg)
+ */
+
+/* flat values */
#define GTK_VALUE_CHAR(a) ((a).d.char_data)
+#define GTK_VALUE_UCHAR(a) ((a).d.uchar_data)
#define GTK_VALUE_BOOL(a) ((a).d.bool_data)
#define GTK_VALUE_INT(a) ((a).d.int_data)
#define GTK_VALUE_UINT(a) ((a).d.uint_data)
#define GTK_VALUE_DOUBLE(a) ((a).d.double_data)
#define GTK_VALUE_STRING(a) ((a).d.string_data)
#define GTK_VALUE_ENUM(a) ((a).d.int_data)
-#define GTK_VALUE_FLAGS(a) ((a).d.int_data)
+#define GTK_VALUE_FLAGS(a) ((a).d.uint_data)
#define GTK_VALUE_BOXED(a) ((a).d.pointer_data)
-#define GTK_VALUE_FOREIGN(a) ((a).d.foreign_data)
-#define GTK_VALUE_CALLBACK(a) ((a).d.callback_data)
-#define GTK_VALUE_ARGS(a) ((a).d.args_data)
-#define GTK_VALUE_OBJECT(a) ((a).d.object_data)
#define GTK_VALUE_POINTER(a) ((a).d.pointer_data)
+#define GTK_VALUE_OBJECT(a) ((a).d.object_data)
+
+/* structured values */
#define GTK_VALUE_SIGNAL(a) ((a).d.signal_data)
+#define GTK_VALUE_ARGS(a) ((a).d.args_data)
+#define GTK_VALUE_CALLBACK(a) ((a).d.callback_data)
#define GTK_VALUE_C_CALLBACK(a) ((a).d.c_callback_data)
+#define GTK_VALUE_FOREIGN(a) ((a).d.foreign_data)
-#define GTK_RETLOC_CHAR(a) ((gchar*)(a).d.pointer_data)
-#define GTK_RETLOC_BOOL(a) ((gint*)(a).d.pointer_data)
-#define GTK_RETLOC_INT(a) ((gint*)(a).d.pointer_data)
-#define GTK_RETLOC_UINT(a) ((guint*)(a).d.pointer_data)
-#define GTK_RETLOC_LONG(a) ((glong*)(a).d.pointer_data)
-#define GTK_RETLOC_ULONG(a) ((gulong*)(a).d.pointer_data)
-#define GTK_RETLOC_FLOAT(a) ((gfloat*)(a).d.pointer_data)
-#define GTK_RETLOC_DOUBLE(a) ((gdouble*)(a).d.pointer_data)
-#define GTK_RETLOC_STRING(a) ((gchar**)(a).d.pointer_data)
-#define GTK_RETLOC_ENUM(a) ((gint*)(a).d.pointer_data)
-#define GTK_RETLOC_FLAGS(a) ((gint*)(a).d.pointer_data)
-#define GTK_RETLOC_BOXED(a) ((gpointer*)(a).d.pointer_data)
-#define GTK_RETLOC_OBJECT(a) ((GtkObject**)(a).d.pointer_data)
-#define GTK_RETLOC_POINTER(a) ((gpointer*)(a).d.pointer_data)
+/* return location macros, these all narow down to
+ * pointer types, because return values need to be
+ * passed by reference
+ */
+
+/* flat values */
+#define GTK_RETLOC_CHAR(a) ((gchar*) (a).d.pointer_data)
+#define GTK_RETLOC_UCHAR(a) ((guchar*) (a).d.pointer_data)
+#define GTK_RETLOC_BOOL(a) ((gboolean*) (a).d.pointer_data)
+#define GTK_RETLOC_INT(a) ((gint*) (a).d.pointer_data)
+#define GTK_RETLOC_UINT(a) ((guint*) (a).d.pointer_data)
+#define GTK_RETLOC_LONG(a) ((glong*) (a).d.pointer_data)
+#define GTK_RETLOC_ULONG(a) ((gulong*) (a).d.pointer_data)
+#define GTK_RETLOC_FLOAT(a) ((gfloat*) (a).d.pointer_data)
+#define GTK_RETLOC_DOUBLE(a) ((gdouble*) (a).d.pointer_data)
+#define GTK_RETLOC_STRING(a) ((gchar**) (a).d.pointer_data)
+#define GTK_RETLOC_ENUM(a) ((gint*) (a).d.pointer_data)
+#define GTK_RETLOC_FLAGS(a) ((guint*) (a).d.pointer_data)
+#define GTK_RETLOC_BOXED(a) ((gpointer*) (a).d.pointer_data)
+#define GTK_RETLOC_POINTER(a) ((gpointer*) (a).d.pointer_data)
+#define GTK_RETLOC_OBJECT(a) ((GtkObject**) (a).d.pointer_data)
struct _GtkTypeInfo
{
- gchar *type_name;
- guint object_size;
- guint class_size;
- GtkClassInitFunc class_init_func;
- GtkObjectInitFunc object_init_func;
- GtkArgSetFunc arg_set_func;
- GtkArgGetFunc arg_get_func;
+ gchar *type_name;
+ guint object_size;
+ guint class_size;
+ GtkClassInitFunc class_init_func;
+ GtkObjectInitFunc object_init_func;
+ gpointer reserved_1;
+ gpointer reserved_2;
+ GtkClassInitFunc base_class_init_func;
+};
+
+struct _GtkTypeQuery
+{
+ GtkType type;
+ const gchar *type_name;
+ guint object_size;
+ guint class_size;
};
struct _GtkEnumValue
{
- guint value;
+ guint value;
gchar *value_name;
gchar *value_nick;
};
-void gtk_type_init (void);
-GtkType gtk_type_unique (GtkType parent_type,
- GtkTypeInfo *type_info);
-void gtk_type_set_chunk_alloc (GtkType type,
+void gtk_type_init (void);
+GtkType gtk_type_unique (GtkType parent_type,
+ const GtkTypeInfo *type_info);
+void gtk_type_set_chunk_alloc (GtkType type,
guint n_chunks);
-gchar* gtk_type_name (guint type);
-GtkType gtk_type_from_name (const gchar *name);
-GtkType gtk_type_parent (GtkType type);
-gpointer gtk_type_class (GtkType type);
-gpointer gtk_type_parent_class (GtkType type);
+gchar* gtk_type_name (GtkType type);
+GtkType gtk_type_from_name (const gchar *name);
+GtkType gtk_type_parent (GtkType type);
+gpointer gtk_type_class (GtkType type);
+gpointer gtk_type_parent_class (GtkType type);
GList* gtk_type_children_types (GtkType type);
-gpointer gtk_type_new (GtkType type);
-void gtk_type_free (GtkType type,
+gpointer gtk_type_new (GtkType type);
+void gtk_type_free (GtkType type,
gpointer mem);
-void gtk_type_describe_heritage (GtkType type);
-void gtk_type_describe_tree (GtkType type,
+void gtk_type_describe_heritage (GtkType type);
+void gtk_type_describe_tree (GtkType type,
gboolean show_size);
-gint gtk_type_is_a (GtkType type,
+gboolean gtk_type_is_a (GtkType type,
GtkType is_a_type);
-void gtk_type_get_arg (GtkObject *object,
- GtkType type,
- GtkArg *arg,
- guint arg_id);
-void gtk_type_set_arg (GtkObject *object,
- GtkType type,
- GtkArg *arg,
- guint arg_id);
-GtkArg* gtk_arg_copy (GtkArg *src_arg,
- GtkArg *dest_arg);
-GtkType gtk_type_register_enum (const gchar *type_name,
+GtkTypeObject* gtk_type_check_object_cast (GtkTypeObject *type_object,
+ GtkType cast_type);
+GtkTypeClass* gtk_type_check_class_cast (GtkTypeClass *klass,
+ GtkType cast_type);
+GtkType gtk_type_register_enum (const gchar *type_name,
GtkEnumValue *values);
GtkType gtk_type_register_flags (const gchar *type_name,
GtkFlagValue *values);
-GtkEnumValue* gtk_type_enum_get_values (GtkType enum_type);
-GtkFlagValue* gtk_type_flags_get_values (GtkType flags_type);
+GtkEnumValue* gtk_type_enum_get_values (GtkType enum_type);
+GtkFlagValue* gtk_type_flags_get_values (GtkType flags_type);
+GtkEnumValue* gtk_type_enum_find_value (GtkType enum_type,
+ const gchar *value_name);
+GtkFlagValue* gtk_type_flags_find_value (GtkType flag_type,
+ const gchar *value_name);
+/* set the argument collector alias for foreign fundamentals */
+void gtk_type_set_varargs_type (GtkType foreign_type,
+ GtkType varargs_type);
+GtkType gtk_type_get_varargs_type (GtkType foreign_type);
+/* Report internal information about a type. The caller has the
+ * responsibility to invoke a subsequent g_free (returned_data); but
+ * must not modify data pointed to by the members of GtkTypeQuery
+ */
+GtkTypeQuery* gtk_type_query (GtkType type);
+
#ifdef __cplusplus
projects / ~andy / gtk / blobdiff