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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 Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <gmodule.h>
#include "gtkthemes.h"
#include "gtkmain.h"
#include "gtkrc.h"
#include "gtkselection.h"
#include "gtksignal.h"
#include "gtkwidget.h"
#include "config.h"
#include "gtkintl.h"
typedef struct _GtkThemeEnginePrivate GtkThemeEnginePrivate;
struct _GtkThemeEnginePrivate {
GtkThemeEngine engine;
GModule *library;
void *name;
void (*init) (GtkThemeEngine *);
void (*exit) (void);
guint refcount;
};
static GHashTable *engine_hash = NULL;
GtkThemeEngine*
gtk_theme_engine_get (gchar *name)
{
GtkThemeEnginePrivate *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)
{
gchar fullname[1024];
gchar *engine_path;
GModule *library;
g_snprintf (fullname, 1024, "lib%s.so", 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);
return NULL;
}
/* load the lib */
GTK_NOTE (MISC, g_message ("Loading Theme %s\n", engine_path));
library = g_module_open (engine_path, 0);
g_free(engine_path);
if (!library)
g_error(g_module_error());
else
{
result = g_new (GtkThemeEnginePrivate, 1);
result->refcount = 1;
result->name = g_strdup (name);
result->library = library;
/* extract symbols from the lib */
if (!g_module_symbol (library, "theme_init",
(gpointer *)&result->init) ||
!g_module_symbol (library, "theme_exit",
(gpointer *)&result->exit))
{
g_error (g_module_error());
g_free (result);
return NULL;
}
/* call the theme's init (theme_init) function to let it */
/* setup anything it needs to set up. */
result->init((GtkThemeEngine *)result);
g_hash_table_insert (engine_hash, result->name, result);
}
}
else
result->refcount++;
return (GtkThemeEngine *)result;
}
void
gtk_theme_engine_ref (GtkThemeEngine *engine)
{
g_return_if_fail (engine != NULL);
((GtkThemeEnginePrivate *)engine)->refcount++;
}
void
gtk_theme_engine_unref (GtkThemeEngine *engine)
{
GtkThemeEnginePrivate *private;
g_return_if_fail (engine != NULL);
private = (GtkThemeEnginePrivate *)engine;
private->refcount--;
if (private->refcount == 0)
{
g_hash_table_remove (engine_hash, private->name);
g_module_close (private->library);
g_free (private->name);
g_free (private);
}
}
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