Add support for monitors "All" to span panel over all monitors.
[lxde/lxpanel.git] / src / menu-policy.c
1 /**
2 * Copyright (c) 2009 LxDE Developers, see the file AUTHORS for details.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software Foundation,
16 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
17 */
18
19 #ifdef HAVE_CONFIG_H
20 #include <config.h>
21 #endif
22
23 #include <glib.h>
24
25 #include "menu-policy.h"
26 #include "private.h"
27
28 /* support for libmenu-cache 0.4.x */
29 #ifndef MENU_CACHE_CHECK_VERSION
30 # ifdef HAVE_MENU_CACHE_DIR_LIST_CHILDREN
31 # define MENU_CACHE_CHECK_VERSION(_a,_b,_c) (_a == 0 && _b < 5) /* < 0.5.0 */
32 # else
33 # define MENU_CACHE_CHECK_VERSION(_a,_b,_c) 0 /* not even 0.4.0 */
34 # endif
35 #endif
36
37 /* Allocate a menu cache. */
38 MenuCache * panel_menu_cache_new(guint32* visibility_flags)
39 {
40 MenuCache* cache;
41 gboolean need_prefix = (g_getenv("XDG_MENU_PREFIX") == NULL);
42
43 #if MENU_CACHE_CHECK_VERSION(0, 5, 0)
44 /* do it the same way menu:// VFS plugin in libfm does */
45 cache = menu_cache_lookup(need_prefix ? "lxde-applications.menu+hidden" : "applications.menu+hidden");
46 #else
47 cache = menu_cache_lookup(need_prefix ? "lxde-applications.menu" : "applications.menu");
48 #endif
49 if(visibility_flags)
50 {
51 if(is_in_lxde)
52 *visibility_flags = SHOW_IN_LXDE;
53 else
54 {
55 const char* de_name = g_getenv("XDG_CURRENT_DESKTOP");
56 if(de_name)
57 *visibility_flags = menu_cache_get_desktop_env_flag(cache, de_name);
58 else
59 *visibility_flags = SHOW_IN_LXDE|SHOW_IN_GNOME|SHOW_IN_KDE|SHOW_IN_XFCE;
60 }
61 }
62 return cache;
63 }
64
65 /* Evaluate the visibility of a menu item. */
66 gboolean panel_menu_item_evaluate_visibility(MenuCacheItem * item, guint32 visibility_flags)
67 {
68 return menu_cache_app_get_is_visible(MENU_CACHE_APP(item), visibility_flags);
69 }