glue/screensaver-glue.c

   1 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2
   3 /*
   4  * screensaver-glue.c
   5  *
   6  * Copyright (C) 2004 Novell, Inc.
   7  *
   8  */
   9
  10 /*
  11  * Permission is hereby granted, free of charge, to any person obtaining a
  12  * copy of this software and associated documentation files (the "Software"),
  13  * to deal in the Software without restriction, including without limitation
  14  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  15  * and/or sell copies of the Software, and to permit persons to whom the
  16  * Software is furnished to do so, subject to the following conditions:
  17  *
  18  * The above copyright notice and this permission notice shall be included in
  19  * all copies or substantial portions of the Software.
  20  *
  21  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  22  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  23  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  24  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  25  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  26  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  27  * DEALINGS IN THE SOFTWARE.
  28  */
  29
  30 #include <gdk/gdk.h>
  31 #include <gdk/gdkx.h>
  32 #include <X11/Xlib.h>
  33 #include <X11/extensions/scrnsaver.h>
  34
  35
  36 int
  37 screensaver_info (int *state, int *kind, unsigned long *til_or_since, unsigned long *idle)
  38 {
  39     XScreenSaverInfo ss_info;
  40     int retval;
  41     static int inited = 0;
  42     int event_base, error_base;
  43
  44     if (GDK_DISPLAY () == NULL)
  45         return 0;
  46
  47     /* FIXME: This should be called somewhere else. */
  48     if (! inited) {
  49         gdk_threads_init ();
  50         inited = 1;
  51     }
  52
  53     gdk_threads_enter ();
  54     if (XScreenSaverQueryExtension (GDK_DISPLAY (), &event_base, &error_base))
  55         retval = XScreenSaverQueryInfo (GDK_DISPLAY (), DefaultRootWindow (GDK_DISPLAY ()), &ss_info);
  56     else
  57         retval = 0;
  58     gdk_threads_leave ();
  59
  60     if (retval != 0) {
  61         *state = ss_info.state;
  62         *kind = ss_info.kind;
  63         *til_or_since = ss_info.til_or_since;
  64         *idle = ss_info.idle;
  65         return 1;
  66     } else {
  67         return 0;
  68     }
  69 }
  70
  71