1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
2  *
3  * Copyright (C) 2005-2011 Richard Hughes <richard@hughsie.com>
4  *
5  * Licensed under the GNU General Public License Version 2
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2 of the License, or
10  * (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20  */
21 
22 #ifndef __GPMCOMMON_H
23 #define __GPMCOMMON_H
24 
25 #include <glib.h>
26 #include <libupower-glib/upower.h>
27 
28 G_BEGIN_DECLS
29 
30 /* UPower helpers */
31 gchar           *gpm_get_timestring                     (guint           time);
32 
33 /* Power helpers */
34 gboolean         gsd_power_is_hardware_a_vm             (void);
35 guint            gsd_power_enable_screensaver_watchdog  (void);
36 void             reset_idletime                         (void);
37 
38 /* Backlight helpers */
39 
40 /* on ACPI machines we have 4-16 levels, on others it's ~150 */
41 #define BRIGHTNESS_STEP_AMOUNT(max) ((max) < 20 ? 1 : (max) / 20)
42 
43 #define ABS_TO_PERCENTAGE(min, max, value) gsd_power_backlight_abs_to_percentage(min, max, value)
44 #define PERCENTAGE_TO_ABS(min, max, value) gsd_power_backlight_percentage_to_abs(min, max, value)
45 
46 int              gsd_power_backlight_abs_to_percentage  (int min, int max, int value);
47 int              gsd_power_backlight_percentage_to_abs  (int min, int max, int value);
48 
49 /* RandR helpers */
50 void             watch_external_monitor                 (GnomeRRScreen *screen);
51 gboolean         external_monitor_is_connected          (GnomeRRScreen *screen);
52 
53 /* Sound helpers */
54 void             play_loop_start                        (guint *id);
55 void             play_loop_stop                         (guint *id);
56 
57 G_END_DECLS
58 
59 #endif  /* __GPMCOMMON_H */
60