forked from AuroraMiddleware/gtk
279e878bdd
Wed Feb 24 01:22:39 CST 1999 Shawn T. Amundson <amundson@gtk.org>
* *.[ch]: Added notice to look in AUTHORS and ChangeLog files
for a list of changes.
155 lines
3.8 KiB
C
155 lines
3.8 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* Themes added by The Rasterman <raster@redhat.com>
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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 Library 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-1999. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <gmodule.h>
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#include "gtkthemes.h"
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#include "gtkmain.h"
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#include "gtkrc.h"
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#include "gtkselection.h"
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#include "gtksignal.h"
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#include "gtkwidget.h"
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#include "config.h"
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#include "gtkintl.h"
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typedef struct _GtkThemeEnginePrivate GtkThemeEnginePrivate;
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struct _GtkThemeEnginePrivate {
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GtkThemeEngine engine;
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GModule *library;
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void *name;
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void (*init) (GtkThemeEngine *);
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void (*exit) (void);
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guint refcount;
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};
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static GHashTable *engine_hash = NULL;
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GtkThemeEngine*
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gtk_theme_engine_get (gchar *name)
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{
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GtkThemeEnginePrivate *result;
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if (!engine_hash)
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engine_hash = g_hash_table_new (g_str_hash, g_str_equal);
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/* get the library name for the theme */
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result = g_hash_table_lookup (engine_hash, name);
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if (!result)
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{
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gchar fullname[1024];
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gchar *engine_path;
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GModule *library;
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g_snprintf (fullname, 1024, "lib%s.so", name);
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engine_path = gtk_rc_find_module_in_path (fullname);
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if (!engine_path)
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{
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g_warning (_("Unable to locate loadable module in module_path: \"%s\","),
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fullname);
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return NULL;
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}
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/* load the lib */
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GTK_NOTE (MISC, g_message ("Loading Theme %s\n", engine_path));
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library = g_module_open (engine_path, 0);
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g_free(engine_path);
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if (!library)
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{
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g_warning (g_module_error());
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return NULL;
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}
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else
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{
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result = g_new (GtkThemeEnginePrivate, 1);
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result->refcount = 1;
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result->name = g_strdup (name);
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result->library = library;
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/* extract symbols from the lib */
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if (!g_module_symbol (library, "theme_init",
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(gpointer *)&result->init) ||
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!g_module_symbol (library, "theme_exit",
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(gpointer *)&result->exit))
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{
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g_warning (g_module_error());
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g_free (result);
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return NULL;
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}
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/* call the theme's init (theme_init) function to let it */
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/* setup anything it needs to set up. */
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result->init((GtkThemeEngine *)result);
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g_hash_table_insert (engine_hash, result->name, result);
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}
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}
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else
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result->refcount++;
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return (GtkThemeEngine *)result;
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}
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void
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gtk_theme_engine_ref (GtkThemeEngine *engine)
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{
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g_return_if_fail (engine != NULL);
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((GtkThemeEnginePrivate *)engine)->refcount++;
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}
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void
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gtk_theme_engine_unref (GtkThemeEngine *engine)
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{
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GtkThemeEnginePrivate *private;
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g_return_if_fail (engine != NULL);
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private = (GtkThemeEnginePrivate *)engine;
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private->refcount--;
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if (private->refcount == 0)
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{
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g_hash_table_remove (engine_hash, private->name);
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g_module_close (private->library);
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g_free (private->name);
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g_free (private);
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}
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}
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