+++ /dev/null
-/* xset.c --- interacting with server extensions and the builtin screensaver.
- * xscreensaver, Copyright (c) 1991-1998 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
- * the above copyright notice appear in all copies and that both that
- * copyright notice and this permission notice appear in supporting
- * documentation. No representations are made about the suitability of this
- * software for any purpose. It is provided "as is" without express or
- * implied warranty.
- */
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-#include <stdio.h>
-#include <X11/Xlib.h>
-#include <X11/Xutil.h>
-#include <X11/Xatom.h>
-#include <X11/Xos.h>
-
-/* This file doesn't need the Xt headers, so stub these types out... */
-#undef XtPointer
-#define XtAppContext void*
-#define XrmDatabase void*
-#define XtIntervalId void*
-#define XtPointer void*
-#define Widget void*
-
-#include "xscreensaver.h"
-
-#ifdef _VROOT_H_
-ERROR! You must not include vroot.h in this file.
-#endif
-
-\f
-/* MIT SCREEN-SAVER server extension hackery.
- */
-
-#ifdef HAVE_MIT_SAVER_EXTENSION
-
-# 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)
-{
- return 0;
-}
-
-static void
-init_mit_saver_extension (saver_info *si)
-{
- int i;
- Pixmap *blank_pix = (Pixmap *) calloc (sizeof(Pixmap), si->nscreens);
-
- for (i = 0; i < si->nscreens; i++)
- {
- saver_screen_info *ssi = &si->screens[i];
- XID kill_id = 0;
- Atom kill_type = 0;
- Window root = RootWindowOfScreen (ssi->screen);
- blank_pix[i] = XCreatePixmap (si->dpy, root, 1, 1, 1);
-
- /* Kill off the old MIT-SCREEN-SAVER client if there is one.
- This tends to generate X errors, though (possibly due to a bug
- in the server extension itself?) so just ignore errors here. */
- if (XScreenSaverGetRegistered (si->dpy,
- XScreenNumberOfScreen (ssi->screen),
- &kill_id, &kill_type)
- && kill_id != blank_pix[i])
- {
- XErrorHandler old_handler =
- XSetErrorHandler (ignore_all_errors_ehandler);
- XKillClient (si->dpy, kill_id);
- XSync (si->dpy, False);
- XSetErrorHandler (old_handler);
- }
- XScreenSaverSelectInput (si->dpy, root, ScreenSaverNotifyMask);
- XScreenSaverRegister (si->dpy,
- XScreenNumberOfScreen (ssi->screen),
- (XID) blank_pix[i], XA_PIXMAP);
- }
- free(blank_pix);
-}
-#endif /* HAVE_MIT_SAVER_EXTENSION */
-
-\f
-/* SGI SCREEN_SAVER server extension hackery.
- */
-
-#ifdef HAVE_SGI_SAVER_EXTENSION
-
-# 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)
-{
- saver_preferences *p = &si->prefs;
- int i;
- if (si->screen_blanked_p)
- /* If you mess with this while the server thinks it's active,
- the server crashes. */
- return;
-
- for (i = 0; i < si->nscreens; i++)
- {
- saver_screen_info *ssi = &si->screens[i];
- XScreenSaverDisable (si->dpy, XScreenNumberOfScreen(ssi->screen));
- if (! XScreenSaverEnable (si->dpy, XScreenNumberOfScreen(ssi->screen)))
- {
- fprintf (stderr,
- "%s: SGI SCREEN_SAVER extension exists, but can't be initialized;\n\
- perhaps some other screensaver program is already running?\n",
- blurb());
- si->using_sgi_saver_extension = False;
- return;
- }
- }
-}
-
-#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 unblank_screen_p)
-{
- saver_preferences *p = &si->prefs;
- int current_server_timeout, current_server_interval;
- int current_prefer_blank, current_allow_exp;
- int desired_server_timeout, desired_server_interval;
- int desired_prefer_blank, desired_allow_exp;
-
- XGetScreenSaver (si->dpy, ¤t_server_timeout, ¤t_server_interval,
- ¤t_prefer_blank, ¤t_allow_exp);
-
- desired_server_timeout = current_server_timeout;
- desired_server_interval = current_server_interval;
- desired_prefer_blank = current_prefer_blank;
- desired_allow_exp = current_allow_exp;
-
- /* On SGIs, if interval is non-zero, it is the number of seconds after
- screen saving starts at which the monitor should be powered down.
- Obviously I don't want that, so set it to 0 (meaning "never".)
-
- Power saving is disabled if DontPreferBlanking, but in that case,
- we don't get extension events either. So we can't turn it off that way.
-
- Note: if you're running Irix 6.3 (O2), you may find that your monitor is
- powering down anyway, regardless of the xset settings. This is fixed by
- installing SGI patches 2447 and 2537.
- */
- desired_server_interval = 0;
-
- /* I suspect (but am not sure) that DontAllowExposures might have
- 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 (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 (si->using_sgi_saver_extension)
- desired_prefer_blank = PreferBlanking;
- else
- desired_prefer_blank = DontPreferBlanking;
- }
- else
- {
- /* 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;
- }
-
- 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 (unblank_screen_p)
- fprintf (stderr,
- "%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; xset s %s; xset s %s)\n", blurb(),
- desired_server_timeout, desired_server_interval,
- (desired_prefer_blank ? "blank" : "noblank"),
- (desired_allow_exp ? "expose" : "noexpose"));
-
- XSetScreenSaver (si->dpy,
- desired_server_timeout, desired_server_interval,
- desired_prefer_blank, desired_allow_exp);
- XSync(si->dpy, False);
- }
-
-
-#if defined(HAVE_MIT_SAVER_EXTENSION) || defined(HAVE_SGI_SAVER_EXTENSION)
- {
- static Bool extension_initted = False;
- if (!extension_initted)
- {
- extension_initted = True;
-# ifdef HAVE_MIT_SAVER_EXTENSION
- if (si->using_mit_saver_extension) init_mit_saver_extension(si);
-# endif
-# ifdef HAVE_SGI_SAVER_EXTENSION
- if (si->using_sgi_saver_extension) init_sgi_saver_extension(si);
-# endif
- }
- }
-#endif /* HAVE_MIT_SAVER_EXTENSION || HAVE_SGI_SAVER_EXTENSION */
-
- if (unblank_screen_p)
- /* Turn off the server builtin saver if it is now running. */
- XForceScreenSaver (si->dpy, ScreenSaverReset);
-}
-
-\f
-/* Display Power Management System (DPMS.)
-
- On XFree86 systems, "man xset" reports:
-
- -dpms The -dpms option disables DPMS (Energy Star) features.
- +dpms The +dpms option enables DPMS (Energy Star) features.
-
- dpms flags...
- The dpms option allows the DPMS (Energy Star)
- parameters to be set. The option can take up to three
- numerical values, or the `force' flag followed by a
- DPMS state. The `force' flags forces the server to
- immediately switch to the DPMS state specified. The
- DPMS state can be one of `standby', `suspend', or
- `off'. When numerical values are given, they set the
- inactivity period before the three modes are activated.
- The first value given is for the `standby' mode, the
- second is for the `suspend' mode, and the third is for
- the `off' mode. Setting these values implicitly
- enables the DPMS features. A value of zero disables a
- particular mode.
-
- However, note that the implementation is more than a little bogus,
- in that there is code in /usr/X11R6/lib/libXdpms.a to implement all
- the usual server-extension-querying utilities -- but there are no
- prototypes in any header file! Thus, the prototypes here. (The
- stuff in X11/extensions/dpms.h and X11/extensions/dpmsstr.h define
- the raw X protcol, they don't define the API to libXdpms.a.)
-
- Some documentation:
- Library: ftp://ftp.x.org/pub/R6.4/xc/doc/specs/Xext/DPMSLib.ms
- Protocol: ftp://ftp.x.org/pub/R6.4/xc/doc/specs/Xext/DPMS.ms
- */
-
-#ifdef HAVE_DPMS_EXTENSION
-
-#include <X11/Xproto.h> /* for CARD16 */
-#include <X11/extensions/dpms.h>
-#include <X11/extensions/dpmsstr.h>
-
-extern Bool DPMSQueryExtension (Display *dpy, int *event_ret, int *error_ret);
-extern Bool DPMSCapable (Display *dpy);
-extern Status DPMSForceLevel (Display *dpy, CARD16 level);
-extern Status DPMSInfo (Display *dpy, CARD16 *power_level, BOOL *state);
-
-#if 0 /* others we don't use */
-extern Status DPMSGetVersion (Display *dpy, int *major_ret, int *minor_ret);
-extern Status DPMSSetTimeouts (Display *dpy,
- CARD16 standby, CARD16 suspend, CARD16 off);
-extern Bool DPMSGetTimeouts (Display *dpy,
- CARD16 *standby, CARD16 *suspend, CARD16 *off);
-extern Status DPMSEnable (Display *dpy);
-extern Status DPMSDisable (Display *dpy);
-#endif /* 0 */
-
-
-Bool
-monitor_powered_on_p (saver_info *si)
-{
- Bool result;
- int event_number, error_number;
- BOOL onoff = False;
- CARD16 state;
-
- if (!DPMSQueryExtension(si->dpy, &event_number, &error_number))
- /* Server doesn't know -- assume the monitor is on. */
- result = True;
-
- else if (!DPMSCapable(si->dpy))
- /* Server says the monitor doesn't do power management -- so it's on. */
- result = True;
-
- else
- {
- DPMSInfo(si->dpy, &state, &onoff);
- if (!onoff)
- /* Server says DPMS is disabled -- so the monitor is on. */
- result = True;
- else
- switch (state) {
- case DPMSModeOn: result = True; break; /* really on */
- case DPMSModeStandby: result = False; break; /* kinda off */
- case DPMSModeSuspend: result = False; break; /* pretty off */
- case DPMSModeOff: result = False; break; /* really off */
- default: result = True; break; /* protocol error? */
- }
- }
-
- return result;
-}
-
-void
-monitor_power_on (saver_info *si)
-{
- if (!monitor_powered_on_p (si))
- {
- DPMSForceLevel(si->dpy, DPMSModeOn);
- XSync(si->dpy, False);
- if (!monitor_powered_on_p (si))
- fprintf (stderr,
- "%s: DPMSForceLevel(dpy, DPMSModeOn) did not power the monitor on?\n",
- blurb());
- }
-}
-
-#else /* !HAVE_DPMS_EXTENSION */
-
-Bool
-monitor_powered_on_p (saver_info *si)
-{
- return True;
-}
-
-void
-monitor_power_on (saver_info *si)
-{
- return;
-}
-
-#endif /* !HAVE_DPMS_EXTENSION */
projects / xscreensaver / blobdiff