mirror of
https://gitlab.gnome.org/GNOME/glib.git
synced 2024-11-02 15:46:17 +01:00
6d1d9cf1b5
GBinding is a simple, opaque object that represents a binding between a property on a GObject instance (source) and property on another GObject instance (target). https://bugzilla.gnome.org/show_bug.cgi?id=348080
120 lines
4.5 KiB
C
120 lines
4.5 KiB
C
/* gbinding.h: Binding for object properties
|
|
*
|
|
* Copyright (C) 2010 Intel Corp.
|
|
*
|
|
* 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.
|
|
*
|
|
* Author: Emmanuele Bassi <ebassi@linux.intel.com>
|
|
*/
|
|
|
|
#if !defined (__GLIB_GOBJECT_H_INSIDE__) && !defined (GOBJECT_COMPILATION)
|
|
#error "Only <glib-object.h> can be included directly."
|
|
#endif
|
|
|
|
#ifndef __G_BINDING_H__
|
|
#define __G_BINDING_H__
|
|
|
|
#include <glib.h>
|
|
#include <gobject/gobject.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define G_TYPE_BINDING_FLAGS (g_binding_flags_get_type ())
|
|
|
|
#define G_TYPE_BINDING (g_binding_get_type ())
|
|
#define G_BINDING(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), G_TYPE_BINDING, GBinding))
|
|
#define G_IS_BINDING(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), G_TYPE_BINDING))
|
|
|
|
/**
|
|
* GBinding:
|
|
*
|
|
* <structname>GBinding</structname> is an opaque structure whose members
|
|
* cannot be accessed directly.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
typedef struct _GBinding GBinding;
|
|
|
|
/**
|
|
* GBindingTransformFunc:
|
|
* @binding: a #GBinding
|
|
* @source_value: the value of the source property
|
|
* @target_value: the value of the target property
|
|
* @user_data: data passed to the transform function
|
|
*
|
|
* A function to be called to transform the source property of @source
|
|
* from @source_value into the target property of @target using
|
|
* @target_value
|
|
*
|
|
* Return value: %TRUE if the transformation was successful, and %FALSE
|
|
* otherwise
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
typedef gboolean (* GBindingTransformFunc) (GBinding *binding,
|
|
const GValue *source_value,
|
|
GValue *target_value,
|
|
gpointer user_data);
|
|
|
|
/**
|
|
* GBindingFlags:
|
|
* @G_BINDING_DEFAULT: The default binding; if the source property
|
|
* changes, the target property is updated with its value
|
|
* @G_BINDING_BIDIRECTIONAL: Bidirectional binding; if either the
|
|
* property of the source or the property of the target changes,
|
|
* the other is updated
|
|
*
|
|
* Flags to be passed to g_object_bind_property() or
|
|
* g_object_bind_property_full().
|
|
*
|
|
* This enumeration can be extended at later date.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
typedef enum { /*< prefix=G_BINDING >*/
|
|
G_BINDING_DEFAULT = 0,
|
|
|
|
G_BINDING_BIDIRECTIONAL = 1 << 0
|
|
} GBindingFlags;
|
|
|
|
GType g_binding_flags_get_type (void) G_GNUC_CONST;
|
|
GType g_binding_get_type (void) G_GNUC_CONST;
|
|
|
|
GBindingFlags g_binding_get_flags (GBinding *binding);
|
|
GObject * g_binding_get_source (GBinding *binding);
|
|
GObject * g_binding_get_target (GBinding *binding);
|
|
G_CONST_RETURN gchar *g_binding_get_source_property (GBinding *binding);
|
|
G_CONST_RETURN gchar *g_binding_get_target_property (GBinding *binding);
|
|
|
|
GBinding *g_object_bind_property (gpointer source,
|
|
const gchar *source_property,
|
|
gpointer target,
|
|
const gchar *target_property,
|
|
GBindingFlags flags);
|
|
GBinding *g_object_bind_property_full (gpointer source,
|
|
const gchar *source_property,
|
|
gpointer target,
|
|
const gchar *target_property,
|
|
GBindingFlags flags,
|
|
GBindingTransformFunc transform_to,
|
|
GBindingTransformFunc transform_from,
|
|
gpointer user_data,
|
|
GDestroyNotify notify);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __G_BINDING_H__ */
|