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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* Themes added by The Rasterman <raster@redhat.com>
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. 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/.
*/
#include <stdio.h>
#include <stdlib.h>
#include <gmodule.h>
#include "gtkthemes.h"
#include "gtkrc.h"
#include "config.h"
#include "gtkintl.h"
typedef struct _GtkThemeEngineClass GtkThemeEngineClass;
struct _GtkThemeEngine
{
GTypeModule parent_instance;
GModule *library;
void (*init) (GTypeModule *);
void (*exit) (void);
GtkRcStyle *(*create_rc_style) ();
gchar *name;
};
struct _GtkThemeEngineClass
{
GTypeModuleClass parent_class;
};
static GHashTable *engine_hash = NULL;
static gboolean
gtk_theme_engine_load (GTypeModule *module)
{
GtkThemeEngine *engine = GTK_THEME_ENGINE (module);
gchar *fullname;
gchar *engine_path;
fullname = g_module_build_path (NULL, engine->name);
engine_path = gtk_rc_find_module_in_path (fullname);
if (!engine_path)
{
g_warning (_("Unable to locate loadable module in module_path: \"%s\","),
fullname);
g_free (fullname);
return FALSE;
}
g_free (fullname);
/* load the lib */
GTK_NOTE (MISC, g_message ("Loading Theme %s\n", engine_path));
engine->library = g_module_open (engine_path, 0);
g_free(engine_path);
if (!engine->library)
{
g_warning (g_module_error());
return FALSE;
}
/* extract symbols from the lib */
if (!g_module_symbol (engine->library, "theme_init",
(gpointer *)&engine->init) ||
!g_module_symbol (engine->library, "theme_exit",
(gpointer *)&engine->exit) ||
!g_module_symbol (engine->library, "theme_create_rc_style",
(gpointer *)&engine->create_rc_style))
{
g_warning (g_module_error());
g_module_close (engine->library);
return FALSE;
}
/* call the theme's init (theme_init) function to let it */
/* setup anything it needs to set up. */
engine->init (module);
return TRUE;
}
static void
gtk_theme_engine_unload (GTypeModule *module)
{
GtkThemeEngine *engine = GTK_THEME_ENGINE (module);
engine->exit();
g_module_close (engine->library);
engine->library = NULL;
engine->init = NULL;
engine->exit = NULL;
engine->create_rc_style = NULL;
}
static void
gtk_theme_engine_class_init (GtkThemeEngineClass *class)
{
GTypeModuleClass *module_class = G_TYPE_MODULE_CLASS (class);
module_class->load = gtk_theme_engine_load;
module_class->unload = gtk_theme_engine_unload;
}
GType
gtk_theme_engine_get_type (void)
{
static GType theme_engine_type = 0;
if (!theme_engine_type)
{
static const GTypeInfo theme_engine_info = {
sizeof (GtkThemeEngineClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gtk_theme_engine_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkThemeEngine),
0, /* n_preallocs */
NULL, /* instance_init */
};
theme_engine_type = g_type_register_static (G_TYPE_TYPE_MODULE, "GtkThemeEngine", &theme_engine_info, 0);
}
return theme_engine_type;
}
GtkThemeEngine*
gtk_theme_engine_get (const gchar *name)
{
GtkThemeEngine *result;
if (!engine_hash)
engine_hash = g_hash_table_new (g_str_hash, g_str_equal);
/* get the library name for the theme
*/
result = g_hash_table_lookup (engine_hash, name);
if (!result)
{
result = GTK_THEME_ENGINE (g_object_new (GTK_TYPE_THEME_ENGINE, NULL));
g_type_module_set_name (G_TYPE_MODULE (result), name);
result->name = g_strdup (name);
g_hash_table_insert (engine_hash, result->name, result);
}
if (!g_type_module_use (G_TYPE_MODULE (result)))
return NULL;
return result;
}
GtkRcStyle *
gtk_theme_engine_create_rc_style (GtkThemeEngine *engine)
{
g_return_val_if_fail (engine != NULL, NULL);
return engine->create_rc_style ();
}
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