pidgin/gtkidle.c

   1 /*
   2  * pidgin
   3  *
   4  * Pidgin is the legal property of its developers, whose names are too numerous
   5  * to list here.  Please refer to the COPYRIGHT file distributed with this
   6  * source distribution.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111-1301  USA
  21  *
  22  */
  23 #include "internal.h"
  24 #include "gtkidle.h"
  25
  26 #ifdef HAVE_IOKIT
  27 # include <CoreFoundation/CoreFoundation.h>
  28 # include <IOKit/IOKitLib.h>
  29 #else
  30 # ifdef USE_SCREENSAVER
  31 #  ifdef _WIN32
  32 #   include "gtkwin32dep.h"
  33 #  else
  34     /* We're on X11 and not MacOS X with IOKit. */
  35 #   include <X11/Xlib.h>
  36 #   include <X11/Xutil.h>
  37 #   include <X11/extensions/scrnsaver.h>
  38 #   include <gdk/gdkx.h>
  39 #  endif /* !_WIN32 */
  40 # endif /* USE_SCREENSAVER */
  41 #endif /* !HAVE_IOKIT */
  42
  43 #include "idle.h"
  44
  45 /*
  46  * pidgin_get_time_idle:
  47  *
  48  * Get the number of seconds the user has been idle.  In Unix-world
  49  * this is based on the X Windows usage.  In MS Windows this is
  50  * based on keyboard/mouse usage information obtained from the OS.
  51  * In MacOS X, this is based on keyboard/mouse usage information
  52  * obtained from the OS, if configure detected IOKit.  Otherwise,
  53  * MacOS X is handled as a case of X Windows.
  54  *
  55  * In Debian bug #271639, jwz says:
  56  *
  57  * Purple should simply ask xscreensaver how long the user has been idle:
  58  *   % xscreensaver-command -time
  59  *   XScreenSaver 4.18: screen blanked since Tue Sep 14 14:10:45 2004
  60  *
  61  * Or you can monitor the _SCREENSAVER_STATUS property on root window #0.
  62  * Element 0 is the status (0, BLANK, LOCK), element 1 is the time_t since
  63  * the last state change, and subsequent elements are which hack is running
  64  * on the various screens:
  65  *   % xprop -f _SCREENSAVER_STATUS 32ac -root _SCREENSAVER_STATUS
  66  *   _SCREENSAVER_STATUS(INTEGER) = BLANK, 1095196626, 10, 237
  67  *
  68  * See watch() in xscreensaver/driver/xscreensaver-command.c.
  69  *
  70  * Returns: The number of seconds the user has been idle.
  71  */
  72 #if defined(USE_SCREENSAVER) || defined(HAVE_IOKIT)
  73 static time_t
  74 pidgin_get_time_idle(void)
  75 {
  76 # ifdef HAVE_IOKIT
  77         /* Query the IOKit API */
  78
  79         static io_service_t macIOsrvc = NULL;
  80         CFTypeRef property;
  81         uint64_t idle_time = 0; /* nanoseconds */
  82
  83         if (macIOsrvc == NULL)
  84         {
  85                 mach_port_t master;
  86                 IOMasterPort(MACH_PORT_NULL, &master);
  87                 macIOsrvc = IOServiceGetMatchingService(master,
  88                                                         IOServiceMatching("IOHIDSystem"));
  89         }
  90
  91         property = IORegistryEntryCreateCFProperty(macIOsrvc, CFSTR("HIDIdleTime"),
  92                                                    kCFAllocatorDefault, 0);
  93         CFNumberGetValue((CFNumberRef)property,
  94                          kCFNumberSInt64Type, &idle_time);
  95         CFRelease(property);
  96
  97         /* convert nanoseconds to seconds */
  98         return idle_time / 1000000000;
  99 # else
 100 #  ifdef _WIN32
 101         /* Query Windows */
 102         return (GetTickCount() - winpidgin_get_lastactive()) / 1000;
 103 #  else
 104         /* We're on X11 and not MacOS X with IOKit. */
 105
 106         /* Query xscreensaver */
 107         static XScreenSaverInfo *mit_info = NULL;
 108         static int has_extension = -1;
 109         int event_base, error_base;
 110
 111         if (has_extension == -1)
 112                 has_extension = XScreenSaverQueryExtension(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()),
 113                                                            &event_base, &error_base);
 114
 115         if (has_extension)
 116         {
 117                 if (mit_info == NULL)
 118                         mit_info = XScreenSaverAllocInfo();
 119
 120                 XScreenSaverQueryInfo(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()),
 121                                       GDK_ROOT_WINDOW(), mit_info);
 122                 return (mit_info->idle) / 1000;
 123         }
 124         else
 125                 return 0;
 126 #  endif /* !_WIN32 */
 127 # endif /* !HAVE_IOKIT */
 128 }
 129 #endif /* USE_SCREENSAVER || HAVE_IOKIT */
 130
 131 static PurpleIdleUiOps ui_ops =
 132 {
 133 #if defined(USE_SCREENSAVER) || defined(HAVE_IOKIT)
 134         pidgin_get_time_idle,
 135 #else
 136         NULL,
 137 #endif /* USE_SCREENSAVER || HAVE_IOKIT */
 138         NULL,
 139         NULL,
 140         NULL,
 141         NULL
 142 };
 143
 144 PurpleIdleUiOps *
 145 pidgin_idle_get_ui_ops()
 146 {
 147         return &ui_ops;
 148 }