/* windows.c --- turning the screen black; dealing with visuals, virtual roots.
- * xscreensaver, Copyright (c) 1991-1998 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
#include <X11/Xatom.h>
#include <X11/Xos.h> /* for time() */
#include <signal.h> /* for the signal names */
+#include <time.h>
+#include <sys/time.h>
#ifdef HAVE_MIT_SAVER_EXTENSION
# include <X11/extensions/scrnsaver.h>
#endif /* HAVE_MIT_SAVER_EXTENSION */
+#ifdef HAVE_XF86VMODE
+# include <X11/extensions/xf86vmode.h>
+#endif /* HAVE_XF86VMODE */
-#ifdef HAVE_XHPDISABLERESET
-# include <X11/XHPlib.h>
-
- /* Calls to XHPDisableReset and XHPEnableReset must be balanced,
- or BadAccess errors occur. (Ok for this to be global, since it
- affects the whole machine, not just the current screen.) */
- Bool hp_locked_p = False;
-
-#endif /* HAVE_XHPDISABLERESET */
-
+#ifdef HAVE_XINERAMA
+# include <X11/extensions/Xinerama.h>
+#endif /* HAVE_XINERAMA */
/* This file doesn't need the Xt headers, so stub these types out... */
#undef XtPointer
#include "fade.h"
-#ifdef HAVE_VT_LOCKSWITCH
-# include <fcntl.h>
-# include <sys/ioctl.h>
-# include <sys/vt.h>
- static void lock_vt (saver_info *si, Bool lock_p);
-#endif /* HAVE_VT_LOCKSWITCH */
-
-
extern int kill (pid_t, int); /* signal() is in sys/signal.h... */
-Atom XA_VROOT, XA_XSETROOT_ID;
+Atom XA_VROOT, XA_XSETROOT_ID, XA_ESETROOT_PMAP_ID, XA_XROOTPMAP_ID;
Atom XA_SCREENSAVER, XA_SCREENSAVER_VERSION, XA_SCREENSAVER_ID;
-Atom XA_SCREENSAVER_TIME;
+Atom XA_SCREENSAVER_STATUS;
extern saver_info *global_si_kludge; /* I hate C so much... */
-
-static void store_activate_time (saver_info *si, Bool use_last_p);
+static void maybe_transfer_grabs (saver_screen_info *ssi,
+ Window old_w, Window new_w, int new_screen);
#define ALL_POINTER_EVENTS \
(ButtonPressMask | ButtonReleaseMask | EnterWindowMask | \
Button4MotionMask | Button5MotionMask | ButtonMotionMask)
-static int
-grab_kbd(saver_info *si, Window w)
-{
- saver_preferences *p = &si->prefs;
- int status = XGrabKeyboard (si->dpy, w, True,
- /* I don't really understand Sync vs Async,
- but these seem to work... */
- GrabModeSync, GrabModeAsync,
- CurrentTime);
- if (status == GrabSuccess)
- si->keyboard_grab_window = w;
-
- if (p->verbose_p)
- fprintf(stderr, "%s: grabbing keyboard on 0x%x... %s.\n",
- blurb(), (unsigned long) w,
- (status == GrabSuccess ? "GrabSuccess" :
- status == AlreadyGrabbed ? "AlreadyGrabbed" :
- status == GrabInvalidTime ? "GrabInvalidTime" :
- status == GrabNotViewable ? "GrabNotViewable" :
- status == GrabFrozen ? "GrabFrozen" :
- "???"));
-
- return status;
-}
-
static const char *
grab_string(int status)
{
switch (status)
{
- case GrabSuccess: return "GrabSuccess"; break;
- case AlreadyGrabbed: return "AlreadyGrabbed"; break;
- case GrabInvalidTime: return "GrabInvalidTime"; break;
- case GrabNotViewable: return "GrabNotViewable"; break;
- case GrabFrozen: return "GrabFrozen"; break;
+ case GrabSuccess: return "GrabSuccess";
+ case AlreadyGrabbed: return "AlreadyGrabbed";
+ case GrabInvalidTime: return "GrabInvalidTime";
+ case GrabNotViewable: return "GrabNotViewable";
+ case GrabFrozen: return "GrabFrozen";
default:
{
static char foo[255];
}
}
+static int
+grab_kbd(saver_info *si, Window w, int screen_no)
+{
+ saver_preferences *p = &si->prefs;
+ int status = XGrabKeyboard (si->dpy, w, True,
+ /* I don't really understand Sync vs Async,
+ but these seem to work... */
+ GrabModeSync, GrabModeAsync,
+ CurrentTime);
+ if (status == GrabSuccess)
+ {
+ si->keyboard_grab_window = w;
+ si->keyboard_grab_screen = screen_no;
+ }
+
+ if (p->verbose_p)
+ fprintf(stderr, "%s: %d: grabbing keyboard on 0x%lx... %s.\n",
+ blurb(), screen_no, (unsigned long) w, grab_string(status));
+ return status;
+}
+
static int
-grab_mouse (saver_info *si, Window w, Cursor cursor)
+grab_mouse (saver_info *si, Window w, Cursor cursor, int screen_no)
{
saver_preferences *p = &si->prefs;
int status = XGrabPointer (si->dpy, w, True, ALL_POINTER_EVENTS,
- GrabModeAsync, GrabModeAsync, None,
+ GrabModeAsync, GrabModeAsync, w,
cursor, CurrentTime);
if (status == GrabSuccess)
- si->mouse_grab_window = w;
+ {
+ si->mouse_grab_window = w;
+ si->mouse_grab_screen = screen_no;
+ }
if (p->verbose_p)
- fprintf(stderr, "%s: grabbing mouse on 0x%x... %s.\n",
- blurb(), (unsigned long) w, grab_string(status));
+ fprintf(stderr, "%s: %d: grabbing mouse on 0x%lx... %s.\n",
+ blurb(), screen_no, (unsigned long) w, grab_string(status));
return status;
}
saver_preferences *p = &si->prefs;
XUngrabKeyboard(si->dpy, CurrentTime);
if (p->verbose_p)
- fprintf(stderr, "%s: ungrabbing keyboard (was 0x%x).\n", blurb(),
- (unsigned long) si->keyboard_grab_window);
+ fprintf(stderr, "%s: %d: ungrabbing keyboard (was 0x%lx).\n",
+ blurb(), si->keyboard_grab_screen,
+ (unsigned long) si->keyboard_grab_window);
si->keyboard_grab_window = 0;
}
saver_preferences *p = &si->prefs;
XUngrabPointer(si->dpy, CurrentTime);
if (p->verbose_p)
- fprintf(stderr, "%s: ungrabbing mouse (was 0x%x).\n", blurb(),
- (unsigned long) si->mouse_grab_window);
+ fprintf(stderr, "%s: %d: ungrabbing mouse (was 0x%lx).\n",
+ blurb(), si->mouse_grab_screen,
+ (unsigned long) si->mouse_grab_window);
si->mouse_grab_window = 0;
}
-Bool
-grab_keyboard_and_mouse (saver_info *si, Window window, Cursor cursor)
+/* Apparently there is this program called "rdesktop" which is a windows
+ terminal server client for Unix. It would seem that this program holds
+ the keyboard GRABBED the whole time it has focus! This is, of course,
+ completely idiotic: the whole point of grabbing is to get events when
+ you do *not* have focus, so grabbing *only when* you have focus is
+ completely redundant -- unless your goal is to make xscreensaver not
+ able to ever lock the screen when your program is running.
+
+ If xscreensaver blanks while rdesktop still has a keyboard grab, then
+ when we try to prompt for the password, we won't get the characters:
+ they'll be typed into rdesktop.
+
+ Perhaps rdesktop will release its keyboard grab if it loses focus?
+ What the hell, let's give it a try. If we fail to grab the keyboard
+ four times in a row, we forcibly set focus to "None" and try four
+ more times. (We don't touch focus unless we're already having a hard
+ time getting a grab.)
+ */
+static void
+nuke_focus (saver_info *si, int screen_no)
{
- Status mstatus, kstatus;
+ saver_preferences *p = &si->prefs;
+ Window focus = 0;
+ int rev = 0;
+
+ XGetInputFocus (si->dpy, &focus, &rev);
+
+ if (p->verbose_p)
+ {
+ char w[255], r[255];
+
+ if (focus == PointerRoot) strcpy (w, "PointerRoot");
+ else if (focus == None) strcpy (w, "None");
+ else sprintf (w, "0x%lx", (unsigned long) focus);
+
+ if (rev == RevertToParent) strcpy (r, "RevertToParent");
+ else if (rev == RevertToPointerRoot) strcpy (r, "RevertToPointerRoot");
+ else if (rev == RevertToNone) strcpy (r, "RevertToNone");
+ else sprintf (r, "0x%x", rev);
+
+ fprintf (stderr, "%s: %d: removing focus from %s / %s.\n",
+ blurb(), screen_no, w, r);
+ }
+
+ XSetInputFocus (si->dpy, None, RevertToNone, CurrentTime);
XSync (si->dpy, False);
+}
- kstatus = grab_kbd (si, window);
- if (kstatus != GrabSuccess)
- { /* try again in a second */
+
+static Bool
+grab_keyboard_and_mouse (saver_info *si, Window window, Cursor cursor,
+ int screen_no)
+{
+ Status mstatus = 0, kstatus = 0;
+ int i;
+ int retries = 4;
+ Bool focus_fuckus = False;
+
+ AGAIN:
+
+ for (i = 0; i < retries; i++)
+ {
+ XSync (si->dpy, False);
+ kstatus = grab_kbd (si, window, screen_no);
+ if (kstatus == GrabSuccess)
+ break;
+
+ /* else, wait a second and try to grab again. */
sleep (1);
- kstatus = grab_kbd (si, window);
- if (kstatus != GrabSuccess)
- fprintf (stderr, "%s: couldn't grab keyboard! (%s)\n",
- blurb(), grab_string(kstatus));
}
- mstatus = grab_mouse (si, window, cursor);
- if (mstatus != GrabSuccess)
- { /* try again in a second */
+ if (kstatus != GrabSuccess)
+ {
+ fprintf (stderr, "%s: couldn't grab keyboard! (%s)\n",
+ blurb(), grab_string(kstatus));
+
+ if (! focus_fuckus)
+ {
+ focus_fuckus = True;
+ nuke_focus (si, screen_no);
+ goto AGAIN;
+ }
+ }
+
+ for (i = 0; i < retries; i++)
+ {
+ XSync (si->dpy, False);
+ mstatus = grab_mouse (si, window, cursor, screen_no);
+ if (mstatus == GrabSuccess)
+ break;
+
+ /* else, wait a second and try to grab again. */
sleep (1);
- mstatus = grab_mouse (si, window, cursor);
- if (mstatus != GrabSuccess)
- fprintf (stderr, "%s: couldn't grab pointer! (%s)\n",
- blurb(), grab_string(mstatus));
}
- return (kstatus == GrabSuccess ||
- mstatus == GrabSuccess);
+ if (mstatus != GrabSuccess)
+ fprintf (stderr, "%s: couldn't grab pointer! (%s)\n",
+ blurb(), grab_string(mstatus));
+
+
+ /* When should we allow blanking to proceed? The current theory
+ is that a keyboard grab is manditory; a mouse grab is optional.
+
+ - If we don't have a keyboard grab, then we won't be able to
+ read a password to unlock, so the kbd grab is manditory.
+ (We can't conditionalize this on locked_p, because someone
+ might run "xscreensaver-command -lock" at any time.)
+
+ - If we don't have a mouse grab, then we might not see mouse
+ clicks as a signal to unblank -- but we will still see kbd
+ activity, so that's not a disaster.
+ */
+
+ if (kstatus != GrabSuccess) /* Do not blank without a kbd grab. */
+ return False;
+
+ return True; /* Grab is good, go ahead and blank. */
}
-void
+static void
ungrab_keyboard_and_mouse (saver_info *si)
{
ungrab_mouse (si);
}
+int
+move_mouse_grab (saver_info *si, Window to, Cursor cursor, int to_screen_no)
+{
+ Window old = si->mouse_grab_window;
+
+ if (old == 0)
+ return grab_mouse (si, to, cursor, to_screen_no);
+ else
+ {
+ saver_preferences *p = &si->prefs;
+ int status;
+
+ XSync (si->dpy, False);
+ XGrabServer (si->dpy); /* ############ DANGER! */
+ XSync (si->dpy, False);
+
+ if (p->verbose_p)
+ fprintf(stderr, "%s: grabbing server...\n", blurb());
+
+ ungrab_mouse (si);
+ status = grab_mouse (si, to, cursor, to_screen_no);
+
+ if (status != GrabSuccess) /* Augh! */
+ {
+ sleep (1); /* Note dramatic evil of sleeping
+ with server grabbed. */
+ XSync (si->dpy, False);
+ status = grab_mouse (si, to, cursor, to_screen_no);
+ }
+
+ if (status != GrabSuccess) /* Augh! Try to get the old one back... */
+ grab_mouse (si, old, cursor, to_screen_no);
+
+ XUngrabServer (si->dpy);
+ XSync (si->dpy, False); /* ###### (danger over) */
+
+ if (p->verbose_p)
+ fprintf(stderr, "%s: ungrabbing server.\n", blurb());
+
+ return status;
+ }
+}
+
+
/* Prints an error message to stderr and returns True if there is another
xscreensaver running already. Silently returns False otherwise. */
Bool
Atom type;
int format;
unsigned long nitems, bytesafter;
- char *version;
+ unsigned char *version;
if (XGetWindowProperty (dpy, kids[i], XA_SCREENSAVER_VERSION, 0, 1,
False, XA_STRING, &type, &format, &nitems,
- &bytesafter, (unsigned char **) &version)
+ &bytesafter, &version)
== Success
&& type != None)
{
- char *id;
+ unsigned char *id;
if (!XGetWindowProperty (dpy, kids[i], XA_SCREENSAVER_ID, 0, 512,
False, XA_STRING, &type, &format, &nitems,
- &bytesafter, (unsigned char **) &id)
+ &bytesafter, &id)
== Success
|| type == None)
- id = "???";
+ id = (unsigned char *) "???";
fprintf (stderr,
"%s: already running on display %s (window 0x%x)\n from process %s.\n",
- blurb(), DisplayString (dpy), (int) kids [i], id);
+ blurb(), DisplayString (dpy), (int) kids [i],
+ (char *) id);
status = True;
}
}
}
+static Bool safe_XKillClient (Display *dpy, XID id);
+
+#ifdef HAVE_XF86VMODE
+static Bool safe_XF86VidModeGetViewPort (Display *, int, int *, int *);
+#endif /* HAVE_XF86VMODE */
+
+
static void
-kill_xsetroot_data (Display *dpy, Window window, Bool verbose_p)
+kill_xsetroot_data_1 (Display *dpy, Window window,
+ Atom prop, const char *atom_name,
+ Bool verbose_p)
{
Atom type;
int format;
unsigned long nitems, bytesafter;
- Pixmap *dataP = 0;
+ unsigned char *dataP = 0;
/* If the user has been using xv or xsetroot as a screensaver (to display
an image on the screensaver window, as a kind of slideshow) then the
delete of the _XSETROOT_ID property, and if it held a pixmap, then we
cause the RetainPermanent resources of the client which created it
(and which no longer exists) to be freed.
+
+ Update: it seems that Gnome and KDE do this same trick, but with the
+ properties "ESETROOT_PMAP_ID" and/or "_XROOTPMAP_ID" instead of
+ "_XSETROOT_ID". So, we'll kill those too.
*/
- if (XGetWindowProperty (dpy, window, XA_XSETROOT_ID, 0, 1,
+ if (XGetWindowProperty (dpy, window, prop, 0, 1,
True, AnyPropertyType, &type, &format, &nitems,
- &bytesafter, (unsigned char **) &dataP)
+ &bytesafter, &dataP)
== Success
&& type != None)
{
- if (dataP && *dataP && type == XA_PIXMAP && format == 32 &&
+ Pixmap *pixP = (Pixmap *) dataP;
+ if (pixP && *pixP && type == XA_PIXMAP && format == 32 &&
nitems == 1 && bytesafter == 0)
{
if (verbose_p)
- fprintf (stderr, "%s: destroying xsetroot data (0x%lX).\n",
- blurb(), *dataP);
- XKillClient (dpy, *dataP);
+ fprintf (stderr, "%s: destroying %s data (0x%lX).\n",
+ blurb(), atom_name, *pixP);
+ safe_XKillClient (dpy, *pixP);
}
else
- fprintf (stderr, "%s: deleted unrecognised _XSETROOT_ID property: \n\
- %lu, %lu; type: %lu, format: %d, nitems: %lu, bytesafter %ld\n",
- blurb(), (unsigned long) dataP, (dataP ? *dataP : 0), type,
+ fprintf (stderr,
+ "%s: deleted unrecognised %s property: \n"
+ "\t%lu, %lu; type: %lu, format: %d, "
+ "nitems: %lu, bytesafter %ld\n",
+ blurb(), atom_name,
+ (unsigned long) pixP, (pixP ? *pixP : 0), type,
format, nitems, bytesafter);
}
}
-static void handle_signals (saver_info *si, Bool on_p);
+static void
+kill_xsetroot_data (Display *dpy, Window w, Bool verbose_p)
+{
+ kill_xsetroot_data_1 (dpy, w, XA_XSETROOT_ID, "_XSETROOT_ID", verbose_p);
+ kill_xsetroot_data_1 (dpy, w, XA_ESETROOT_PMAP_ID, "ESETROOT_PMAP_ID",
+ verbose_p);
+ kill_xsetroot_data_1 (dpy, w, XA_XROOTPMAP_ID, "_XROOTPMAP_ID", verbose_p);
+}
+
static void
save_real_vroot (saver_screen_info *ssi)
Atom type;
int format;
unsigned long nitems, bytesafter;
- Window *vrootP = 0;
+ unsigned char *dataP = 0;
+ Window *vrootP;
+ int j;
+
+ /* Skip this window if it is the xscreensaver window of any other
+ screen (this can happen in the Xinerama case.)
+ */
+ for (j = 0; j < si->nscreens; j++)
+ {
+ saver_screen_info *ssi2 = &si->screens[j];
+ if (kids[i] == ssi2->screensaver_window)
+ goto SKIP;
+ }
if (XGetWindowProperty (dpy, kids[i], XA_VROOT, 0, 1, False, XA_WINDOW,
&type, &format, &nitems, &bytesafter,
- (unsigned char **) &vrootP)
+ &dataP)
!= Success)
continue;
- if (! vrootP)
+ if (! dataP)
continue;
+
+ vrootP = (Window *) dataP;
if (ssi->real_vroot)
{
if (*vrootP == ssi->screensaver_window) abort ();
}
ssi->real_vroot = kids [i];
ssi->real_vroot_value = *vrootP;
+ SKIP:
+ ;
}
XSync (dpy, False);
if (ssi->real_vroot)
{
- handle_signals (si, True);
remove_vroot_property (si->dpy, ssi->real_vroot);
XSync (dpy, False);
}
static Bool
-restore_real_vroot_2 (saver_screen_info *ssi)
+restore_real_vroot_1 (saver_screen_info *ssi)
{
saver_info *si = ssi->global;
saver_preferences *p = &si->prefs;
return False;
}
-static Bool
-restore_real_vroot_1 (saver_info *si)
+Bool
+restore_real_vroot (saver_info *si)
{
int i;
Bool did_any = False;
for (i = 0; i < si->nscreens; i++)
{
saver_screen_info *ssi = &si->screens[i];
- if (restore_real_vroot_2 (ssi))
+ if (restore_real_vroot_1 (ssi))
did_any = True;
}
return did_any;
}
-void
-restore_real_vroot (saver_info *si)
-{
- if (restore_real_vroot_1 (si))
- handle_signals (si, False);
-}
-
\f
/* Signal hackery to ensure that the vroot doesn't get left in an
inconsistent state
saver_info *si = global_si_kludge; /* I hate C so much... */
signal (sig, SIG_DFL);
- if (restore_real_vroot_1 (si))
+ if (restore_real_vroot (si))
fprintf (real_stderr, "\n%s: %s intercepted, vroot restored.\n",
blurb(), signal_name(sig));
kill (getpid (), sig);
}
static void
-catch_signal (saver_info *si, int sig, Bool on_p)
+catch_signal (saver_info *si, int sig, RETSIGTYPE (*handler) (int))
{
- if (! on_p)
- signal (sig, SIG_DFL);
- else
+# ifdef HAVE_SIGACTION
+
+ struct sigaction a;
+ a.sa_handler = handler;
+ sigemptyset (&a.sa_mask);
+ a.sa_flags = 0;
+
+ /* On Linux 2.4.9 (at least) we need to tell the kernel to not mask delivery
+ of this signal from inside its handler, or else when we execvp() the
+ process again, it starts up with SIGHUP blocked, meaning that killing
+ it with -HUP only works *once*. You'd think that execvp() would reset
+ all the signal masks, but it doesn't.
+ */
+# if defined(SA_NOMASK)
+ a.sa_flags |= SA_NOMASK;
+# elif defined(SA_NODEFER)
+ a.sa_flags |= SA_NODEFER;
+# endif
+
+ if (sigaction (sig, &a, 0) < 0)
+# else /* !HAVE_SIGACTION */
+ if (((long) signal (sig, handler)) == -1L)
+# endif /* !HAVE_SIGACTION */
{
- if (((long) signal (sig, restore_real_vroot_handler)) == -1L)
- {
- char buf [255];
- sprintf (buf, "%s: couldn't catch %s", blurb(), signal_name(sig));
- perror (buf);
- saver_exit (si, 1, 0);
- }
+ char buf [255];
+ sprintf (buf, "%s: couldn't catch %s", blurb(), signal_name(sig));
+ perror (buf);
+ saver_exit (si, 1, 0);
}
}
-static void
-handle_signals (saver_info *si, Bool on_p)
+static RETSIGTYPE saver_sighup_handler (int sig);
+
+void
+handle_signals (saver_info *si)
{
-#if 0
- if (on_p) fprintf (stderr, "handling signals\n");
- else fprintf (stderr, "unhandling signals\n");
+ catch_signal (si, SIGHUP, saver_sighup_handler);
+
+ catch_signal (si, SIGINT, restore_real_vroot_handler);
+ catch_signal (si, SIGQUIT, restore_real_vroot_handler);
+ catch_signal (si, SIGILL, restore_real_vroot_handler);
+ catch_signal (si, SIGTRAP, restore_real_vroot_handler);
+#ifdef SIGIOT
+ catch_signal (si, SIGIOT, restore_real_vroot_handler);
#endif
-
- catch_signal (si, SIGHUP, on_p);
- catch_signal (si, SIGINT, on_p);
- catch_signal (si, SIGQUIT, on_p);
- catch_signal (si, SIGILL, on_p);
- catch_signal (si, SIGTRAP, on_p);
- catch_signal (si, SIGIOT, on_p);
- catch_signal (si, SIGABRT, on_p);
+ catch_signal (si, SIGABRT, restore_real_vroot_handler);
#ifdef SIGEMT
- catch_signal (si, SIGEMT, on_p);
+ catch_signal (si, SIGEMT, restore_real_vroot_handler);
#endif
- catch_signal (si, SIGFPE, on_p);
- catch_signal (si, SIGBUS, on_p);
- catch_signal (si, SIGSEGV, on_p);
+ catch_signal (si, SIGFPE, restore_real_vroot_handler);
+ catch_signal (si, SIGBUS, restore_real_vroot_handler);
+ catch_signal (si, SIGSEGV, restore_real_vroot_handler);
#ifdef SIGSYS
- catch_signal (si, SIGSYS, on_p);
+ catch_signal (si, SIGSYS, restore_real_vroot_handler);
#endif
- catch_signal (si, SIGTERM, on_p);
+ catch_signal (si, SIGTERM, restore_real_vroot_handler);
#ifdef SIGXCPU
- catch_signal (si, SIGXCPU, on_p);
+ catch_signal (si, SIGXCPU, restore_real_vroot_handler);
#endif
#ifdef SIGXFSZ
- catch_signal (si, SIGXFSZ, on_p);
+ catch_signal (si, SIGXFSZ, restore_real_vroot_handler);
#endif
#ifdef SIGDANGER
- catch_signal (si, SIGDANGER, on_p);
+ catch_signal (si, SIGDANGER, restore_real_vroot_handler);
#endif
}
+
+static RETSIGTYPE
+saver_sighup_handler (int sig)
+{
+ saver_info *si = global_si_kludge; /* I hate C so much... */
+
+ /* Re-establish SIGHUP handler */
+ catch_signal (si, SIGHUP, saver_sighup_handler);
+
+ fprintf (stderr, "%s: %s received: restarting...\n",
+ blurb(), signal_name(sig));
+
+ if (si->screen_blanked_p)
+ {
+ unblank_screen (si);
+ kill_screenhack (si);
+ XSync (si->dpy, False);
+ }
+
+ restart_process (si); /* Does not return */
+ abort ();
+}
+
+
+
void
saver_exit (saver_info *si, int status, const char *dump_core_reason)
{
exiting = True;
- vrs = restore_real_vroot_1 (si);
+ vrs = restore_real_vroot (si);
emergency_kill_subproc (si);
+ shutdown_stderr (si);
- if (vrs && (p->verbose_p || status != 0))
- fprintf (real_stderr, "%s: vroot restored, exiting.\n", blurb());
- else if (p->verbose_p)
- fprintf (real_stderr, "%s: no vroot to restore; exiting.\n", blurb());
+ if (p->verbose_p && vrs)
+ fprintf (real_stderr, "%s: old vroot restored.\n", blurb());
fflush(real_stdout);
if (bugp)
fprintf(real_stderr,
"%s: see http://www.jwz.org/xscreensaver/bugs.html\n"
- "\t\tfor bug reporting information.\n\n",
+ "\t\t\tfor bug reporting information.\n\n",
blurb());
# if defined(HAVE_GETCWD)
struct passwd *p = getpwuid (getuid ());
const char *name, *host;
char *id;
-
+
/* First store the name and class on the window.
*/
class_hints.res_name = progname;
}
+void
+store_saver_status (saver_info *si)
+{
+ CARD32 *status;
+ int size = si->nscreens + 2;
+ int i;
+
+ status = (CARD32 *) calloc (size, sizeof(CARD32));
+
+ status[0] = (CARD32) (si->screen_blanked_p
+ ? (si->locked_p ? XA_LOCK : XA_BLANK)
+ : 0);
+ status[1] = (CARD32) si->blank_time;
+
+ for (i = 0; i < si->nscreens; i++)
+ {
+ saver_screen_info *ssi = &si->screens[i];
+ status [2 + i] = ssi->current_hack + 1;
+ }
+
+ XChangeProperty (si->dpy,
+ RootWindow (si->dpy, 0), /* always screen #0 */
+ XA_SCREENSAVER_STATUS,
+ XA_INTEGER, 32, PropModeReplace,
+ (unsigned char *) status, size);
+ free (status);
+}
+
+
+
+/* Returns the area of the screen which the xscreensaver window should cover.
+ Normally this is the whole screen, but if the X server's root window is
+ actually larger than the monitor's displayable area, then we want to
+ operate in the currently-visible portion of the desktop instead.
+ */
+void
+get_screen_viewport (saver_screen_info *ssi,
+ int *x_ret, int *y_ret,
+ int *w_ret, int *h_ret,
+ int target_x, int target_y,
+ Bool verbose_p)
+{
+ int w = WidthOfScreen (ssi->screen);
+ int h = HeightOfScreen (ssi->screen);
+
+# ifdef HAVE_XF86VMODE
+ saver_info *si = ssi->global;
+ saver_preferences *p = &si->prefs;
+ int event, error;
+ int dot;
+ XF86VidModeModeLine ml;
+ int x, y;
+ Bool xinerama_p = si->xinerama_p;
+
+# ifndef HAVE_XINERAMA
+ /* Even if we don't have the client-side Xinerama lib, check to see if
+ the server supports Xinerama, so that we know to ignore the VidMode
+ extension -- otherwise a server crash could result. Yay. */
+ xinerama_p = XQueryExtension (si->dpy, "XINERAMA", &error, &event, &error);
+# endif /* !HAVE_XINERAMA */
+
+# ifdef HAVE_XINERAMA
+ if (xinerama_p)
+ {
+ int mouse_p = (target_x != -1 && target_y != -1);
+ int which = -1;
+ int i;
+
+ /* If a mouse position wasn't passed in, assume we're talking about
+ this screen. */
+ if (!mouse_p)
+ {
+ target_x = ssi->x;
+ target_y = ssi->y;
+ }
+
+ /* Find the Xinerama rectangle that contains the mouse position. */
+ for (i = 0; i < si->nscreens; i++)
+ {
+ if (target_x >= si->screens[i].x &&
+ target_y >= si->screens[i].y &&
+ target_x < si->screens[i].x + si->screens[i].width &&
+ target_y < si->screens[i].y + si->screens[i].height)
+ which = i;
+ }
+ if (which == -1) which = 0; /* didn't find it? Use the first. */
+ *x_ret = si->screens[which].x;
+ *y_ret = si->screens[which].y;
+ *w_ret = si->screens[which].width;
+ *h_ret = si->screens[which].height;
+
+ if (verbose_p)
+ {
+ fprintf (stderr, "%s: %d: xinerama vp: %dx%d+%d+%d",
+ blurb(), which,
+ si->screens[which].width, si->screens[which].height,
+ si->screens[which].x, si->screens[which].y);
+ if (mouse_p)
+ fprintf (stderr, "; mouse at %d,%d", target_x, target_y);
+ fprintf (stderr, ".\n");
+ }
+
+ return;
+ }
+# endif /* HAVE_XINERAMA */
+
+ if (!xinerama_p && /* Xinerama + VidMode = broken. */
+ XF86VidModeQueryExtension (si->dpy, &event, &error) &&
+ safe_XF86VidModeGetViewPort (si->dpy, ssi->number, &x, &y) &&
+ XF86VidModeGetModeLine (si->dpy, ssi->number, &dot, &ml))
+ {
+ char msg[512];
+ *x_ret = x;
+ *y_ret = y;
+ *w_ret = ml.hdisplay;
+ *h_ret = ml.vdisplay;
+
+ if (*x_ret == 0 && *y_ret == 0 && *w_ret == w && *h_ret == h)
+ /* There is no viewport -- the screen does not scroll. */
+ return;
+
+
+ /* Apparently some versions of XFree86 return nonsense here!
+ I've had reports of 1024x768 viewports at -1936862040, -1953705044.
+ So, sanity-check the values and give up if they are out of range.
+ */
+ if (*x_ret < 0 || *x_ret >= w ||
+ *y_ret < 0 || *y_ret >= h ||
+ *w_ret <= 0 || *w_ret > w ||
+ *h_ret <= 0 || *h_ret > h)
+ {
+ static int warned_once = 0;
+ if (!warned_once)
+ {
+ fprintf (stderr, "\n"
+ "%s: X SERVER BUG: %dx%d viewport at %d,%d is impossible.\n"
+ "%s: The XVidMode server extension is returning nonsense.\n"
+ "%s: Please report this bug to your X server vendor.\n\n",
+ blurb(), *w_ret, *h_ret, *x_ret, *y_ret,
+ blurb(), blurb());
+ warned_once = 1;
+ }
+ *x_ret = 0;
+ *y_ret = 0;
+ *w_ret = w;
+ *h_ret = h;
+ return;
+ }
+
+ sprintf (msg, "%s: %d: vp is %dx%d+%d+%d",
+ blurb(), ssi->number,
+ *w_ret, *h_ret, *x_ret, *y_ret);
+
+
+ if (p->getviewport_full_of_lies_p)
+ {
+ /* XF86VidModeGetViewPort() tends to be full of lies on laptops
+ that have a docking station or external monitor that runs in
+ a different resolution than the laptop's screen:
+
+ http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=81593
+ http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=208417
+ http://bugs.xfree86.org/show_bug.cgi?id=421
+
+ The XFree86 developers have closed the bug. As far as I can
+ tell, their reason for this was, "this is an X server bug,
+ but it's pretty hard to fix. Therefore, we are closing it."
+
+ So, now there's a preference item for those unfortunate users to
+ tell us not to trust a word that XF86VidModeGetViewPort() says.
+ */
+ static int warned_once = 0;
+ if (!warned_once && verbose_p)
+ {
+ warned_once = 1;
+ fprintf (stderr,
+ "%s: %d: XF86VidModeGetViewPort() says vp is %dx%d+%d+%d;\n"
+ "%s: %d: assuming that is a pack of lies;\n"
+ "%s: %d: using %dx%d+0+0 instead.\n",
+ blurb(), ssi->number,
+ *w_ret, *h_ret, *x_ret, *y_ret,
+ blurb(), ssi->number,
+ blurb(), ssi->number, w, h);
+ }
+
+ *x_ret = 0;
+ *y_ret = 0;
+ *w_ret = w;
+ *h_ret = h;
+ return;
+ }
+
+
+ /* Apparently, though the server stores the X position in increments of
+ 1 pixel, it will only make changes to the *display* in some other
+ increment. With XF86_SVGA on a Thinkpad, the display only updates
+ in multiples of 8 pixels when in 8-bit mode, and in multiples of 4
+ pixels in 16-bit mode. I don't know what it does in 24- and 32-bit
+ mode, because I don't have enough video memory to find out.
+
+ I consider it a bug that XF86VidModeGetViewPort() is telling me the
+ server's *target* scroll position rather than the server's *actual*
+ scroll position. David Dawes agrees, and says they may fix this in
+ XFree86 4.0, but it's notrivial.
+
+ He also confirms that this behavior is server-dependent, so the
+ actual scroll position cannot be reliably determined by the client.
+ So... that means the only solution is to provide a ``sandbox''
+ around the blackout window -- we make the window be up to N pixels
+ larger than the viewport on both the left and right sides. That
+ means some part of the outer edges of each hack might not be
+ visible, but screw it.
+
+ I'm going to guess that 16 pixels is enough, and that the Y dimension
+ doesn't have this problem.
+
+ The drawback of doing this, of course, is that some of the screenhacks
+ will still look pretty stupid -- for example, "slidescreen" will cut
+ off the left and right edges of the grid, etc.
+ */
+# define FUDGE 16
+ if (x > 0 && x < w - ml.hdisplay) /* not at left edge or right edge */
+ {
+ /* Round X position down to next lower multiple of FUDGE.
+ Increase width by 2*FUDGE in case some server rounds up.
+ */
+ *x_ret = ((x - 1) / FUDGE) * FUDGE;
+ *w_ret += (FUDGE * 2);
+ }
+# undef FUDGE
+
+ if (*x_ret != x ||
+ *y_ret != y ||
+ *w_ret != ml.hdisplay ||
+ *h_ret != ml.vdisplay)
+ sprintf (msg + strlen(msg), "; fudged to %dx%d+%d+%d",
+ *w_ret, *h_ret, *x_ret, *y_ret);
+
+ if (verbose_p)
+ fprintf (stderr, "%s.\n", msg);
+
+ return;
+ }
+
+# endif /* HAVE_XF86VMODE */
+
+ *x_ret = 0;
+ *y_ret = 0;
+ *w_ret = w;
+ *h_ret = h;
+}
+
+
+static Bool error_handler_hit_p = False;
+
+static int
+ignore_all_errors_ehandler (Display *dpy, XErrorEvent *error)
+{
+ error_handler_hit_p = True;
+ return 0;
+}
+
+
+/* Returns True if successful, False if an X error occurred.
+ We need this because other programs might have done things to
+ our window that will cause XChangeWindowAttributes() to fail:
+ if that happens, we give up, destroy the window, and re-create
+ it.
+ */
+static Bool
+safe_XChangeWindowAttributes (Display *dpy, Window window,
+ unsigned long mask,
+ XSetWindowAttributes *attrs)
+{
+ XErrorHandler old_handler;
+ XSync (dpy, False);
+ error_handler_hit_p = False;
+ old_handler = XSetErrorHandler (ignore_all_errors_ehandler);
+
+ XChangeWindowAttributes (dpy, window, mask, attrs);
+
+ XSync (dpy, False);
+ XSetErrorHandler (old_handler);
+ XSync (dpy, False);
+
+ return (!error_handler_hit_p);
+}
+
+
+/* This might not be necessary, but just in case. */
+static Bool
+safe_XConfigureWindow (Display *dpy, Window window,
+ unsigned long mask, XWindowChanges *changes)
+{
+ XErrorHandler old_handler;
+ XSync (dpy, False);
+ error_handler_hit_p = False;
+ old_handler = XSetErrorHandler (ignore_all_errors_ehandler);
+
+ XConfigureWindow (dpy, window, mask, changes);
+
+ XSync (dpy, False);
+ XSetErrorHandler (old_handler);
+ XSync (dpy, False);
+
+ return (!error_handler_hit_p);
+}
+
+/* This might not be necessary, but just in case. */
+static Bool
+safe_XDestroyWindow (Display *dpy, Window window)
+{
+ XErrorHandler old_handler;
+ XSync (dpy, False);
+ error_handler_hit_p = False;
+ old_handler = XSetErrorHandler (ignore_all_errors_ehandler);
+
+ XDestroyWindow (dpy, window);
+
+ XSync (dpy, False);
+ XSetErrorHandler (old_handler);
+ XSync (dpy, False);
+
+ return (!error_handler_hit_p);
+}
+
+
+static Bool
+safe_XKillClient (Display *dpy, XID id)
+{
+ XErrorHandler old_handler;
+ XSync (dpy, False);
+ error_handler_hit_p = False;
+ old_handler = XSetErrorHandler (ignore_all_errors_ehandler);
+
+ XKillClient (dpy, id);
+
+ XSync (dpy, False);
+ XSetErrorHandler (old_handler);
+ XSync (dpy, False);
+
+ return (!error_handler_hit_p);
+}
+
+
+#ifdef HAVE_XF86VMODE
+static Bool
+safe_XF86VidModeGetViewPort (Display *dpy, int screen, int *xP, int *yP)
+{
+ Bool result;
+ XErrorHandler old_handler;
+ XSync (dpy, False);
+ error_handler_hit_p = False;
+ old_handler = XSetErrorHandler (ignore_all_errors_ehandler);
+
+ result = XF86VidModeGetViewPort (dpy, screen, xP, yP);
+
+ XSync (dpy, False);
+ XSetErrorHandler (old_handler);
+ XSync (dpy, False);
+
+ return (error_handler_hit_p
+ ? False
+ : result);
+}
+
+/* There is no "safe_XF86VidModeGetModeLine" because it fails with an
+ untrappable I/O error instead of an X error -- so one must call
+ safe_XF86VidModeGetViewPort first, and assume that both have the
+ same error condition. Thank you XFree, may I have another.
+ */
+
+#endif /* HAVE_XF86VMODE */
+
+
static void
initialize_screensaver_window_1 (saver_screen_info *ssi)
{
XColor black;
XSetWindowAttributes attrs;
unsigned long attrmask;
- int width = WidthOfScreen (ssi->screen);
- int height = HeightOfScreen (ssi->screen);
+ int x, y, width, height;
static Bool printed_visual_info = False; /* only print the message once. */
+ Window horked_window = 0;
+
+ get_screen_viewport (ssi, &x, &y, &width, &height, -1, -1,
+ (p->verbose_p && !si->screen_blanked_p));
black.red = black.green = black.blue = 0;
attrs.backing_pixel = ssi->black_pixel;
attrs.border_pixel = ssi->black_pixel;
- if (p->debug_p) width = width / 2;
+ if (p->debug_p && !p->quad_p) width = width / 2;
if (!p->verbose_p || printed_visual_info)
;
else if (ssi->current_visual == DefaultVisualOfScreen (ssi->screen))
{
- fprintf (stderr, "%s: using default visual ", blurb());
+ fprintf (stderr, "%s: %d: visual ", blurb(), ssi->number);
describe_visual (stderr, ssi->screen, ssi->current_visual,
install_cmap_p);
}
{
XWindowChanges changes;
unsigned int changesmask = CWX|CWY|CWWidth|CWHeight|CWBorderWidth;
- changes.x = 0;
- changes.y = 0;
+ changes.x = x;
+ changes.y = y;
changes.width = width;
changes.height = height;
changes.border_width = 0;
- XConfigureWindow (si->dpy, ssi->screensaver_window,
- changesmask, &changes);
- XChangeWindowAttributes (si->dpy, ssi->screensaver_window,
- attrmask, &attrs);
+ if (! (safe_XConfigureWindow (si->dpy, ssi->screensaver_window,
+ changesmask, &changes) &&
+ safe_XChangeWindowAttributes (si->dpy, ssi->screensaver_window,
+ attrmask, &attrs)))
+ {
+ horked_window = ssi->screensaver_window;
+ ssi->screensaver_window = 0;
+ }
}
- else
+
+ if (!ssi->screensaver_window)
{
ssi->screensaver_window =
- XCreateWindow (si->dpy, RootWindowOfScreen (ssi->screen), 0, 0,
- width, height, 0, ssi->current_depth, InputOutput,
+ XCreateWindow (si->dpy, RootWindowOfScreen (ssi->screen),
+ x, y, width, height,
+ 0, ssi->current_depth, InputOutput,
ssi->current_visual, attrmask, &attrs);
+
reset_stderr (ssi);
- store_activate_time(si, True);
+
+ if (horked_window)
+ {
+ fprintf (stderr,
+ "%s: someone horked our saver window (0x%lx)! Recreating it...\n",
+ blurb(), (unsigned long) horked_window);
+ maybe_transfer_grabs (ssi, horked_window, ssi->screensaver_window,
+ ssi->number);
+ safe_XDestroyWindow (si->dpy, horked_window);
+ horked_window = 0;
+ }
+
if (p->verbose_p)
- fprintf (stderr, "%s: saver window is 0x%lx.\n",
- blurb(), (unsigned long) ssi->screensaver_window);
+ fprintf (stderr, "%s: %d: saver window is 0x%lx.\n",
+ blurb(), ssi->number,
+ (unsigned long) ssi->screensaver_window);
}
-
- store_saver_id (ssi);
+ store_saver_id (ssi); /* store window name and IDs */
if (!ssi->cursor)
{
}
+/* Called when the RANDR (Resize and Rotate) extension tells us that the
+ size of the screen has changed while the screen was blanked. If we
+ don't do this, then the screen saver will no longer fully fill the
+ screen, and some of the underlying desktop may be visible.
+ */
+void
+resize_screensaver_window (saver_info *si)
+{
+ saver_preferences *p = &si->prefs;
+ int i;
+
+ /* First update the size info in the saver_screen_info structs.
+ */
+
+# ifdef HAVE_XINERAMA
+ if (si->xinerama_p)
+ {
+ /* As of XFree86 4.3.0, the RANDR and XINERAMA extensions cannot coexist.
+ However, maybe they will someday, so I'm guessing that the right thing
+ to do in that case will be to re-query the Xinerama rectangles after
+ a RANDR size change is received: presumably, if the resolution of one
+ or more of the monitors has changed, then the Xinerama rectangle
+ corresponding to that monitor will also have been updated.
+ */
+ int nscreens;
+ XineramaScreenInfo *xsi = XineramaQueryScreens (si->dpy, &nscreens);
+ if (nscreens != si->nscreens) abort();
+ if (!xsi) abort();
+ for (i = 0; i < si->nscreens; i++)
+ {
+ saver_screen_info *ssi = &si->screens[i];
+ if (p->verbose_p &&
+ (ssi->x != xsi[i].x_org ||
+ ssi->y != xsi[i].y_org ||
+ ssi->width != xsi[i].width ||
+ ssi->height != xsi[i].height))
+ fprintf (stderr,
+ "%s: %d: resize xinerama from %dx%d+%d+%d to %dx%d+%d+%d\n",
+ blurb(), i,
+ ssi->width, ssi->height, ssi->x, ssi->y,
+ xsi[i].width, xsi[i].height, xsi[i].x_org, xsi[i].y_org);
+
+ ssi->x = xsi[i].x_org;
+ ssi->y = xsi[i].y_org;
+ ssi->width = xsi[i].width;
+ ssi->height = xsi[i].height;
+ }
+ XFree (xsi);
+ }
+ else
+# endif /* HAVE_XINERAMA */
+ {
+ /* Not Xinerama -- get the real sizes of the root windows. */
+ for (i = 0; i < si->nscreens; i++)
+ {
+ saver_screen_info *ssi = &si->screens[i];
+ XWindowAttributes xgwa;
+ XGetWindowAttributes (si->dpy, RootWindowOfScreen (ssi->screen),
+ &xgwa);
+
+ if (p->verbose_p &&
+ (ssi->x != xgwa.x ||
+ ssi->y != xgwa.y ||
+ ssi->width != xgwa.width ||
+ ssi->height != xgwa.height))
+ fprintf (stderr,
+ "%s: %d: resize screen from %dx%d+%d+%d to %dx%d+%d+%d\n",
+ blurb(), i,
+ ssi->width, ssi->height, ssi->x, ssi->y,
+ xgwa.width, xgwa.height, xgwa.x, xgwa.y);
+
+ ssi->x = xgwa.x;
+ ssi->y = xgwa.y;
+ ssi->width = xgwa.width;
+ ssi->height = xgwa.height;
+ }
+ }
+
+ /* Next, ensure that the screensaver windows are the right size, taking
+ into account both the new size of the screen in question's root window,
+ and any viewport within that.
+ */
+
+ for (i = 0; i < si->nscreens; i++)
+ {
+ saver_screen_info *ssi = &si->screens[i];
+ XWindowAttributes xgwa;
+ XWindowChanges changes;
+ int x, y, width, height;
+ unsigned int changesmask = CWX|CWY|CWWidth|CWHeight|CWBorderWidth;
+
+ XGetWindowAttributes (si->dpy, ssi->screensaver_window, &xgwa);
+ get_screen_viewport (ssi, &x, &y, &width, &height, -1, -1,
+ (p->verbose_p && !si->screen_blanked_p));
+ if (xgwa.x == x &&
+ xgwa.y == y &&
+ xgwa.width == width &&
+ xgwa.height == height)
+ continue; /* no change! */
+
+ changes.x = x;
+ changes.y = y;
+ changes.width = width;
+ changes.height = height;
+ changes.border_width = 0;
+
+ if (p->debug_p && !p->quad_p) changes.width = changes.width / 2;
+
+ if (p->verbose_p)
+ fprintf (stderr,
+ "%s: %d: resize 0x%lx from %dx%d+%d+%d to %dx%d+%d+%d\n",
+ blurb(), i, (unsigned long) ssi->screensaver_window,
+ xgwa.width, xgwa.height, xgwa.x, xgwa.y,
+ width, height, x, y);
+ if (! safe_XConfigureWindow (si->dpy, ssi->screensaver_window,
+ changesmask, &changes))
+ {
+ fprintf (stderr,
+ "%s: %d: someone horked our saver window (0x%lx)! Unable to resize it!\n",
+ blurb(), i, (unsigned long) ssi->screensaver_window);
+ }
+ }
+}
+
+
void
raise_window (saver_info *si,
Bool inhibit_fade, Bool between_hacks_p, Bool dont_clear)
if (si->demoing_p)
inhibit_fade = True;
- initialize_screensaver_window (si);
+ if (si->emergency_lock_p)
+ inhibit_fade = True;
+
+ if (!dont_clear)
+ initialize_screensaver_window (si);
+
reset_watchdog_timer (si, True);
- if (p->fade_p && p->fading_possible_p && !inhibit_fade)
+ if (p->fade_p && si->fading_possible_p && !inhibit_fade)
{
Window *current_windows = (Window *)
calloc(sizeof(Window), si->nscreens);
/* Note! The server is grabbed, and this will take several seconds
to complete! */
- fade_screens (si->dpy, current_maps, current_windows,
+ fade_screens (si->dpy, current_maps,
+ current_windows, si->nscreens,
p->fade_seconds/1000, p->fade_ticks, True, !dont_clear);
free(current_maps);
}
}
-void
+
+int
+mouse_screen (saver_info *si)
+{
+ saver_preferences *p = &si->prefs;
+ Window pointer_root, pointer_child;
+ int root_x, root_y, win_x, win_y;
+ unsigned int mask;
+ int i;
+
+ if (si->nscreens == 1)
+ return 0;
+
+ for (i = 0; i < si->nscreens; i++)
+ {
+ saver_screen_info *ssi = &si->screens[i];
+ if (XQueryPointer (si->dpy, RootWindowOfScreen (ssi->screen),
+ &pointer_root, &pointer_child,
+ &root_x, &root_y, &win_x, &win_y, &mask) &&
+ root_x >= ssi->x &&
+ root_y >= ssi->y &&
+ root_x < ssi->x + ssi->width &&
+ root_y < ssi->y + ssi->height)
+ {
+ if (p->verbose_p)
+ fprintf (stderr, "%s: mouse is on screen %d of %d\n",
+ blurb(), i, si->nscreens);
+ return i;
+ }
+ }
+
+ /* couldn't figure out where the mouse is? Oh well. */
+ return 0;
+}
+
+
+Bool
blank_screen (saver_info *si)
{
int i;
+ Bool ok;
+ Window w;
+ int mscreen;
/* Note: we do our grabs on the root window, not on the screensaver window.
If we grabbed on the saver window, then the demo mode and lock dialog
boxes wouldn't get any events.
+
+ By "the root window", we mean "the root window that contains the mouse."
+ We use to always grab the mouse on screen 0, but that has the effect of
+ moving the mouse to screen 0 from whichever screen it was on, on
+ multi-head systems.
*/
- grab_keyboard_and_mouse (si,
- /*si->screens[0].screensaver_window,*/
- RootWindowOfScreen(si->screens[0].screen),
- (si->demoing_p
- ? 0
- : si->screens[0].cursor));
+ mscreen = mouse_screen (si);
+ w = RootWindowOfScreen(si->screens[mscreen].screen);
+ ok = grab_keyboard_and_mouse (si, w,
+ (si->demoing_p ? 0 : si->screens[0].cursor),
+ mscreen);
+
+
+# if 0
+ if (si->using_mit_saver_extension || si->using_sgi_saver_extension)
+ /* If we're using a server extension, then failure to get a grab is
+ not a big deal -- even without the grab, we will still be able
+ to un-blank when there is user activity, since the server will
+ tell us. */
+ /* #### No, that's not true: if we don't have a keyboard grab,
+ then we can't read passwords to unlock.
+ */
+ ok = True;
+# endif /* 0 */
+
+ if (!ok)
+ return False;
for (i = 0; i < si->nscreens; i++)
{
saver_screen_info *ssi = &si->screens[i];
-
- save_real_vroot (ssi);
+ if (ssi->real_screen_p)
+ save_real_vroot (ssi);
store_vroot_property (si->dpy,
ssi->screensaver_window,
ssi->screensaver_window);
- }
- store_activate_time (si, si->screen_blanked_p);
- raise_window (si, False, False, False);
-#ifdef HAVE_XHPDISABLERESET
- if (si->locked_p && !hp_locked_p)
- {
- XHPDisableReset (si->dpy); /* turn off C-Sh-Reset */
- hp_locked_p = True;
+#ifdef HAVE_XF86VMODE
+ {
+ int ev, er;
+ if (!XF86VidModeQueryExtension (si->dpy, &ev, &er) ||
+ !safe_XF86VidModeGetViewPort (si->dpy, i,
+ &ssi->blank_vp_x,
+ &ssi->blank_vp_y))
+ ssi->blank_vp_x = ssi->blank_vp_y = -1;
+ }
+#endif /* HAVE_XF86VMODE */
}
-#endif
-#ifdef HAVE_VT_LOCKSWITCH
- if (si->locked_p)
- lock_vt (si, True); /* turn off C-Alt-Fn */
-#endif
+ raise_window (si, False, False, False);
si->screen_blanked_p = True;
+ si->blank_time = time ((time_t) 0);
+ si->last_wall_clock_time = 0;
+
+ store_saver_status (si); /* store blank time */
+
+ return True;
}
+
void
unblank_screen (saver_info *si)
{
saver_preferences *p = &si->prefs;
- Bool unfade_p = (p->fading_possible_p && p->unfade_p);
+ Bool unfade_p = (si->fading_possible_p && p->unfade_p);
int i;
monitor_power_on (si);
-
- store_activate_time (si, True);
reset_watchdog_timer (si, False);
if (si->demoing_p)
XUngrabServer (si->dpy);
XSync (si->dpy, False); /* ###### (danger over) */
-
- fade_screens (si->dpy, 0, current_windows,
+ fade_screens (si->dpy, 0,
+ current_windows, si->nscreens,
p->fade_seconds/1000, p->fade_ticks,
False, False);
kill_xsetroot_data (si->dpy, ssi->screensaver_window, p->verbose_p);
}
- store_activate_time(si, False); /* store unblank time */
-
+ store_saver_status (si); /* store unblank time */
ungrab_keyboard_and_mouse (si);
restore_real_vroot (si);
-#ifdef HAVE_XHPDISABLERESET
- if (hp_locked_p)
- {
- XHPEnableReset (si->dpy); /* turn C-Sh-Reset back on */
- hp_locked_p = False;
- }
-#endif
-
-#ifdef HAVE_VT_LOCKSWITCH
- lock_vt (si, False); /* turn C-Alt-Fn back on */
-#endif
-
/* Unmap the windows a second time, dammit -- just to avoid a race
with the screen-grabbing hacks. (I'm not sure if this is really
necessary; I'm stabbing in the dark now.)
XUnmapWindow (si->dpy, si->screens[i].screensaver_window);
si->screen_blanked_p = False;
+ si->blank_time = time ((time_t) 0);
+ si->last_wall_clock_time = 0;
+
+ store_saver_status (si); /* store unblank time */
}
+/* Transfer any grabs from the old window to the new.
+ Actually I think none of this is necessary, since we always
+ hold our grabs on the root window, but I wrote this before
+ re-discovering that...
+ */
static void
-store_activate_time (saver_info *si, Bool use_last_p)
+maybe_transfer_grabs (saver_screen_info *ssi,
+ Window old_w, Window new_w,
+ int new_screen_no)
{
- static time_t last_time = 0;
- time_t now = ((use_last_p && last_time) ? last_time : time ((time_t) 0));
- CARD32 now32 = (CARD32) now;
- int i;
- last_time = now;
+ saver_info *si = ssi->global;
- for (i = 0; i < si->nscreens; i++)
+ /* If the old window held our mouse grab, transfer the grab to the new
+ window. (Grab the server while so doing, to avoid a race condition.)
+ */
+ if (old_w == si->mouse_grab_window)
{
- saver_screen_info *ssi = &si->screens[i];
- if (!ssi->screensaver_window) continue;
- XChangeProperty (si->dpy, ssi->screensaver_window, XA_SCREENSAVER_TIME,
- XA_INTEGER, 32, PropModeReplace,
- (unsigned char *) &now32, 1);
+ XGrabServer (si->dpy); /* ############ DANGER! */
+ ungrab_mouse (si);
+ grab_mouse (si, ssi->screensaver_window,
+ (si->demoing_p ? 0 : ssi->cursor),
+ new_screen_no);
+ XUngrabServer (si->dpy);
+ XSync (si->dpy, False); /* ###### (danger over) */
+ }
+
+ /* If the old window held our keyboard grab, transfer the grab to the new
+ window. (Grab the server while so doing, to avoid a race condition.)
+ */
+ if (old_w == si->keyboard_grab_window)
+ {
+ XGrabServer (si->dpy); /* ############ DANGER! */
+ ungrab_kbd(si);
+ grab_kbd(si, ssi->screensaver_window, ssi->number);
+ XUngrabServer (si->dpy);
+ XSync (si->dpy, False); /* ###### (danger over) */
}
}
+
Bool
select_visual (saver_screen_info *ssi, const char *visual_name)
{
saver_preferences *p = &si->prefs;
Bool install_cmap_p = p->install_cmap_p;
Bool was_installed_p = (ssi->cmap != DefaultColormapOfScreen(ssi->screen));
- Visual *new_v;
+ Visual *new_v = 0;
Bool got_it;
+ /* On some systems (most recently, MacOS X) OpenGL programs get confused
+ when you kill one and re-start another on the same window. So maybe
+ it's best to just always destroy and recreate the xscreensaver window
+ when changing hacks, instead of trying to reuse the old one?
+ */
+ Bool always_recreate_window_p = True;
+
if (visual_name && *visual_name)
{
- if (!strcmp(visual_name, "default-i"))
+ if (!strcmp(visual_name, "default-i") ||
+ !strcmp(visual_name, "Default-i") ||
+ !strcmp(visual_name, "Default-I")
+ )
{
visual_name = "default";
install_cmap_p = True;
}
- else if (!strcmp(visual_name, "default-n"))
+ else if (!strcmp(visual_name, "default-n") ||
+ !strcmp(visual_name, "Default-n") ||
+ !strcmp(visual_name, "Default-N"))
{
visual_name = "default";
install_cmap_p = False;
}
- new_v = get_visual (ssi->screen, visual_name, True, False);
+ else if (!strcmp(visual_name, "gl") ||
+ !strcmp(visual_name, "Gl") ||
+ !strcmp(visual_name, "GL"))
+ {
+ new_v = ssi->best_gl_visual;
+ if (!new_v && p->verbose_p)
+ fprintf (stderr, "%s: no GL visuals.\n", progname);
+ }
+
+ if (!new_v)
+ new_v = get_visual (ssi->screen, visual_name, True, False);
}
else
{
ssi->install_cmap_p = install_cmap_p;
if (new_v &&
- ((ssi->current_visual != new_v) ||
+ (always_recreate_window_p ||
+ (ssi->current_visual != new_v) ||
(install_cmap_p != was_installed_p)))
{
Colormap old_c = ssi->cmap;
if (p->verbose_p)
{
- fprintf (stderr, "%s: switching to visual ", blurb());
+ fprintf (stderr, "%s: %d: visual ", blurb(), ssi->number);
describe_visual (stderr, ssi->screen, new_v, install_cmap_p);
#if 0
- fprintf (stderr, "%s: from ", blurb());
+ fprintf (stderr, "%s: from ", blurb());
describe_visual (stderr, ssi->screen, ssi->current_visual,
was_installed_p);
#endif
raise_window (si, True, True, False);
store_vroot_property (si->dpy,
ssi->screensaver_window, ssi->screensaver_window);
- store_activate_time (si, True);
-
-
-
- /* Transfer the grabs from the old window to the new.
- Actually I think none of this is necessary, since we always
- hold our grabs on the root window, but I wrote this before
- re-discovering that...
- */
+ /* Transfer any grabs from the old window to the new. */
+ maybe_transfer_grabs (ssi, old_w, ssi->screensaver_window, ssi->number);
- /* If we're destroying the window that holds our mouse grab,
- transfer the grab to the new window. (Grab the server while
- so doing, to avoid a race condition.)
- */
- if (old_w == si->mouse_grab_window)
- {
- XGrabServer (si->dpy); /* ############ DANGER! */
- ungrab_mouse (si);
- grab_mouse (si, ssi->screensaver_window,
- (si->demoing_p
- ? 0
- : ssi->cursor));
- XUngrabServer (si->dpy);
- XSync (si->dpy, False); /* ###### (danger over) */
- }
-
- /* If we're destroying the window that holds our keyboard grab,
- transfer the grab to the new window. (Grab the server while
- so doing, to avoid a race condition.)
- */
- if (old_w == si->keyboard_grab_window)
- {
- XGrabServer (si->dpy); /* ############ DANGER! */
- ungrab_kbd(si);
- grab_kbd(si, ssi->screensaver_window);
- XUngrabServer (si->dpy);
- XSync (si->dpy, False); /* ###### (danger over) */
- }
-
- /* Now we can destroy this window without horking our grabs. */
-
+ /* Now we can destroy the old window without horking our grabs. */
XDestroyWindow (si->dpy, old_w);
if (p->verbose_p)
- fprintf (stderr, "%s: destroyed old saver window 0x%lx.\n",
- blurb(), (unsigned long) old_w);
+ fprintf (stderr, "%s: %d: destroyed old saver window 0x%lx.\n",
+ blurb(), ssi->number, (unsigned long) old_w);
if (old_c &&
old_c != DefaultColormapOfScreen (ssi->screen) &&
return got_it;
}
-
-\f
-/* VT locking */
-
-#ifdef HAVE_VT_LOCKSWITCH
-static void
-lock_vt (saver_info *si, Bool lock_p)
-{
- saver_preferences *p = &si->prefs;
- static Bool locked_p = False;
- const char *dev_console = "/dev/console";
- int fd;
-
- if (lock_p == locked_p)
- return;
-
- if (lock_p && !p->lock_vt_p)
- return;
-
- fd = open (dev_console, O_RDWR);
- if (fd < 0)
- {
- char buf [255];
- sprintf (buf, "%s: couldn't %s VTs: %s", blurb(),
- (lock_p ? "lock" : "unlock"),
- dev_console);
-#if 0 /* #### doesn't work yet, so don't bother complaining */
- perror (buf);
-#endif
- return;
- }
-
- if (ioctl (fd, (lock_p ? VT_LOCKSWITCH : VT_UNLOCKSWITCH)) == 0)
- {
- locked_p = lock_p;
-
- if (p->verbose_p)
- fprintf (stderr, "%s: %s VTs\n", blurb(),
- (lock_p ? "locked" : "unlocked"));
- }
- else
- {
- char buf [255];
- sprintf (buf, "%s: couldn't %s VTs: ioctl", blurb(),
- (lock_p ? "lock" : "unlock"));
-#if 0 /* #### doesn't work yet, so don't bother complaining */
- perror (buf);
-#endif
- }
-
- close (fd);
-}
-#endif /* HAVE_VT_LOCKSWITCH */
projects / xscreensaver / blobdiff