/* xset.c --- interacting with server extensions and the builtin screensaver.
- * xscreensaver, Copyright (c) 1991-1998 Jamie Zawinski <jwz@netscape.com>
+ * xscreensaver, Copyright (c) 1991-2008 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
#include "xscreensaver.h"
+#ifdef _VROOT_H_
+ERROR! You must not include vroot.h in this file.
+#endif
+
\f
/* MIT SCREEN-SAVER server extension hackery.
*/
# include <X11/extensions/scrnsaver.h>
-Bool
-query_mit_saver_extension (saver_info *si)
-{
- return XScreenSaverQueryExtension (si->dpy,
- &si->mit_saver_ext_event_number,
- &si->mit_saver_ext_error_number);
-}
-
static int
ignore_all_errors_ehandler (Display *dpy, XErrorEvent *error)
{
# include <X11/extensions/XScreenSaver.h>
-Bool
-query_sgi_saver_extension (saver_info *si)
-{
- return XScreenSaverQueryExtension (si->dpy,
- &si->sgi_saver_ext_event_number,
- &si->sgi_saver_ext_error_number);
-}
-
static void
init_sgi_saver_extension (saver_info *si)
{
fprintf (stderr,
"%s: SGI SCREEN_SAVER extension exists, but can't be initialized;\n\
perhaps some other screensaver program is already running?\n",
- progname);
- p->use_sgi_saver_extension = False;
+ blurb());
+ si->using_sgi_saver_extension = False;
return;
}
}
#endif /* HAVE_SGI_SAVER_EXTENSION */
+
\f
-/* Figuring out what the appropriate XSetScreenSaver() paramters are
+/* 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;
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 knows... */
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)
+ if (si->using_mit_saver_extension || si->using_sgi_saver_extension)
{
desired_server_timeout = (p->timeout / 1000);
/* The SGI extension won't give us events unless blanking is on.
I think (unsure right now) that the MIT extension is the opposite. */
- if (p->use_sgi_saver_extension)
+ if (si->using_sgi_saver_extension)
desired_prefer_blank = PreferBlanking;
else
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;
}
+ /* XSetScreenSaver() generates BadValue if either timeout parameter
+ exceeds 15 bits (signed short.) That is 09:06:07.
+ */
+ if (desired_server_timeout > 0x7FFF) desired_server_timeout = 0x7FFF;
+ if (desired_server_interval > 0x7FFF) desired_server_interval = 0x7FFF;
+
if (desired_server_timeout != current_server_timeout ||
desired_server_interval != current_server_interval ||
desired_prefer_blank != current_prefer_blank ||
desired_allow_exp != current_allow_exp)
{
- if (desired_server_timeout == 0)
- printf ("%s%sisabling server builtin screensaver.\n\
- You can re-enable it with \"xset s on\".\n",
- (p->verbose_p ? "" : progname),
- (p->verbose_p ? "\n\tD" : ": d"));
-
if (p->verbose_p)
- fprintf (stderr, "%s: (xset s %d %d %s %s)\n", progname,
+ fprintf (stderr,
+ "%s: disabling server builtin screensaver:\n"
+ "%s: (xset s %d %d; xset s %s; xset s %s)\n",
+ blurb(), 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,
{
extension_initted = True;
# ifdef HAVE_MIT_SAVER_EXTENSION
- if (p->use_mit_saver_extension) init_mit_saver_extension(si);
+ if (si->using_mit_saver_extension) init_mit_saver_extension(si);
# endif
# ifdef HAVE_SGI_SAVER_EXTENSION
- if (p->use_sgi_saver_extension) init_sgi_saver_extension(si);
+ if (si->using_sgi_saver_extension) init_sgi_saver_extension(si);
# endif
}
}
#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);
}
projects / xscreensaver / blobdiff