diff options
Diffstat (limited to 'gtk/gtkthemes.c')
| -rw-r--r-- | gtk/gtkthemes.c | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/gtk/gtkthemes.c b/gtk/gtkthemes.c new file mode 100644 index 0000000000..d2482a0af9 --- /dev/null +++ b/gtk/gtkthemes.c @@ -0,0 +1,138 @@ +/* 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 "gtkprivate.h" +#include "config.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(NULL, fullname); + + if (!engine_path) + return NULL; + + /* load the lib */ + + printf ("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); + } +} |