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144 lines
3.4 KiB
C
144 lines
3.4 KiB
C
/* GIO - GLib Input, Output and Streaming Library
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*
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* Copyright (C) 2006-2007 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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* Author: Alexander Larsson <alexl@redhat.com>
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*/
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#include <config.h>
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#include "gicon.h"
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#include "glibintl.h"
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#include "gioalias.h"
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/**
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* SECTION:gicon
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* @short_description: Interface for icons
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* @include: gio.h
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*
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* #GIcon is a very minimal interface for icons. It provides functions
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* for checking the equality of two icons and hashing of icons.
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*
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* #GIcon does not provide the actual pixmap for the icon as this is out
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* of GIO's scope, however implementations of #GIcon may contain the name
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* of an icon (see #GThemedIcon), or the path to an icon (see #GLoadableIcon).
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*
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* To obtain a hash of a #GIcon, see g_icon_hash().
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*
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* To check if two #GIcons are equal, see g_icon_equal().
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**/
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static void g_icon_base_init (gpointer g_class);
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static void g_icon_class_init (gpointer g_class,
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gpointer class_data);
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GType
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g_icon_get_type (void)
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{
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static GType icon_type = 0;
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if (! icon_type)
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{
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static const GTypeInfo icon_info =
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{
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sizeof (GIconIface), /* class_size */
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g_icon_base_init, /* base_init */
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NULL, /* base_finalize */
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g_icon_class_init,
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NULL, /* class_finalize */
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NULL, /* class_data */
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0,
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0, /* n_preallocs */
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NULL
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};
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icon_type =
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g_type_register_static (G_TYPE_INTERFACE, I_("GIcon"),
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&icon_info, 0);
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g_type_interface_add_prerequisite (icon_type, G_TYPE_OBJECT);
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}
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return icon_type;
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}
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static void
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g_icon_class_init (gpointer g_class,
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gpointer class_data)
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{
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}
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static void
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g_icon_base_init (gpointer g_class)
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{
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}
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/**
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* g_icon_hash:
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* @icon: #gconstpointer to an icon object.
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*
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* Gets a hash for an icon.
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*
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* Returns: a #guint containing a hash for the @icon, suitable for
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* use in a #GHashTable or similar data structure.
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**/
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guint
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g_icon_hash (gconstpointer icon)
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{
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GIconIface *iface;
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g_return_val_if_fail (G_IS_ICON (icon), 0);
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iface = G_ICON_GET_IFACE (icon);
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return (* iface->hash) ((GIcon *)icon);
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}
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/**
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* g_icon_equal:
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* @icon1: pointer to the first #GIcon.
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* @icon2: pointer to the second #GIcon.
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*
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* Checks if two icons are equal.
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*
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* Returns: %TRUE if @icon1 is equal to @icon2. %FALSE otherwise.
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**/
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gboolean
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g_icon_equal (GIcon *icon1,
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GIcon *icon2)
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{
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GIconIface *iface;
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if (icon1 == NULL && icon2 == NULL)
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return TRUE;
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if (icon1 == NULL || icon2 == NULL)
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return FALSE;
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if (G_TYPE_FROM_INSTANCE (icon1) != G_TYPE_FROM_INSTANCE (icon2))
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return FALSE;
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iface = G_ICON_GET_IFACE (icon1);
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return (* iface->equal) (icon1, icon2);
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}
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#define __G_ICON_C__
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#include "gioaliasdef.c"
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