ftp://ftp.linux.ncsu.edu/mirror/ftp.redhat.com/pub/redhat/linux/enterprise/4/en/os...

[xscreensaver] / driver / xset.c

diff --git a/driver/xset.c b/driver/xset.c
index f2afcee755011f33289f5bb6f9b62d7f5ac53af4..9f123b961675a98cb56836bf29d3409c38bf5494 100644 (file)
--- a/driver/xset.c
+++ b/driver/xset.c
@@ -1,5 +1,5 @@
 /* xset.c --- interacting with server extensions and the builtin screensaver.
- * xscreensaver, Copyright (c) 1991-2002 Jamie Zawinski <jwz@jwz.org>
+ * xscreensaver, Copyright (c) 1991-2004 Jamie Zawinski <jwz@jwz.org>
  *
  * Permission to use, copy, modify, distribute, and sell this software and its
  * documentation for any purpose is hereby granted without fee, provided that
@@ -156,6 +156,44 @@ query_xidle_extension (saver_info *si)
 #endif /* HAVE_XIDLE_EXTENSION */
 
 
+\f
+/* Resize and Rotate server extension hackery.
+ */
+
+#ifdef HAVE_RANDR
+
+# include <X11/extensions/Xrandr.h>
+
+Bool
+query_randr_extension (saver_info *si)
+{
+  saver_preferences *p = &si->prefs;
+  Bool ok = XRRQueryExtension (si->dpy,
+                               &si->randr_event_number,
+                               &si->randr_error_number);
+
+  if (ok)
+    {
+      int nscreens = ScreenCount (si->dpy);  /* number of *real* screens */
+      int i;
+
+      if (p->verbose_p)
+       fprintf (stderr, "%s: selecting RANDR events\n", blurb());
+      for (i = 0; i < nscreens; i++)
+# ifdef RRScreenChangeNotifyMask                 /* randr.h 1.5, 2002/09/29 */
+        XRRSelectInput (si->dpy, RootWindow (si->dpy, i),
+                        RRScreenChangeNotifyMask);
+# else  /* !RRScreenChangeNotifyMask */          /* Xrandr.h 1.4, 2001/06/07 */
+        XRRScreenChangeSelectInput (si->dpy, RootWindow (si->dpy, i), True);
+# endif /* !RRScreenChangeNotifyMask */
+    }
+
+  return ok;
+}
+
+#endif /* HAVE_RANDR */
+
+
 \f
 /* Figuring out what the appropriate XSetScreenSaver() parameters are
    (one wouldn't expect this to be rocket science.)