http://ftp.x.org/contrib/applications/xscreensaver-3.01.tar.gz

[xscreensaver] / driver / xset.c

diff --git a/driver/xset.c b/driver/xset.c
index 1e5cff499a67e6bc69d4d5ed79dfcf73667c204c..eea175c8472d0ac82221fcf930fccf6fe3dec03d 100644 (file)
--- a/driver/xset.c
+++ b/driver/xset.c
@@ -137,13 +137,32 @@ init_sgi_saver_extension (saver_info *si)
 
 #endif /* HAVE_SGI_SAVER_EXTENSION */
 
+\f
+/* XIDLE server extension hackery.
+ */
+
+#ifdef HAVE_XIDLE_EXTENSION
+
+# include <X11/extensions/xidle.h>
+
+Bool
+query_xidle_extension (saver_info *si)
+{
+  int event_number;
+  int error_number;
+  return XidleQueryExtension (si->dpy, &event_number, &error_number);
+}
+
+#endif /* HAVE_XIDLE_EXTENSION */
+
+
 \f
 /* Figuring out what the appropriate XSetScreenSaver() parameters are
    (one wouldn't expect this to be rocket science.)
  */
 
 void
-disable_builtin_screensaver (saver_info *si, Bool turn_off_p)
+disable_builtin_screensaver (saver_info *si, Bool unblank_screen_p)
 {
   saver_preferences *p = &si->prefs;
   int current_server_timeout, current_server_interval;
@@ -173,10 +192,10 @@ disable_builtin_screensaver (saver_info *si, Bool turn_off_p)
   desired_server_interval = 0;
 
   /* I suspect (but am not sure) that DontAllowExposures might have
-     something to do with powering off the monitor as well. */
+     something to do with powering off the monitor as well, at least
+     on some systems that don't support XDPMS?  Who know... */
   desired_allow_exp = AllowExposures;
 
-#if defined(HAVE_MIT_SAVER_EXTENSION) || defined(HAVE_SGI_SAVER_EXTENSION)
   if (p->use_mit_saver_extension || p->use_sgi_saver_extension)
     {
       desired_server_timeout = (p->timeout / 1000);
@@ -189,8 +208,13 @@ disable_builtin_screensaver (saver_info *si, Bool turn_off_p)
        desired_prefer_blank = DontPreferBlanking;
     }
   else
-#endif /* HAVE_MIT_SAVER_EXTENSION || HAVE_SGI_SAVER_EXTENSION */
     {
+      /* When we're not using an extension, set the server-side timeout to 0,
+        so that the server never gets involved with screen blanking, and we
+        do it all ourselves.  (However, when we *are* using an extension,
+        we tell the server when to notify us, and rather than blanking the
+        screen, the server will send us an X event telling us to blank.)
+       */
       desired_server_timeout = 0;
     }
 
@@ -199,18 +223,17 @@ disable_builtin_screensaver (saver_info *si, Bool turn_off_p)
       desired_prefer_blank != current_prefer_blank ||
       desired_allow_exp != current_allow_exp)
     {
-      if (desired_server_timeout == 0)
+      if (unblank_screen_p)
        fprintf (stderr,
-                "%s%sisabling server builtin screensaver.\n"
-                "\tYou can re-enable it with \"xset s on\".\n",
-               (p->verbose_p ? "" : blurb()),
-               (p->verbose_p ? "\n\tD" : ": d"));
+                "%s disabling server builtin screensaver.\n"
+                "%s: you can re-enable it with \"xset s on\".\n",
+                blurb(), blurb());
 
       if (p->verbose_p)
-       fprintf (stderr, "%s: (xset s %d %d %s %s)\n", blurb(),
+       fprintf (stderr, "%s: (xset s %d %d; xset s %s; xset s %s)\n", blurb(),
                 desired_server_timeout, desired_server_interval,
                 (desired_prefer_blank ? "blank" : "noblank"),
-                (desired_allow_exp ? "noexpose" : "expose"));
+                (desired_allow_exp ? "expose" : "noexpose"));
 
       XSetScreenSaver (si->dpy,
                       desired_server_timeout, desired_server_interval,
@@ -235,7 +258,7 @@ disable_builtin_screensaver (saver_info *si, Bool turn_off_p)
   }
 #endif /* HAVE_MIT_SAVER_EXTENSION || HAVE_SGI_SAVER_EXTENSION */
 
-  if (turn_off_p)
+  if (unblank_screen_p)
     /* Turn off the server builtin saver if it is now running. */
     XForceScreenSaver (si->dpy, ScreenSaverReset);
 }