/* windows.c --- turning the screen black; dealing with visuals, virtual roots.
- * xscreensaver, Copyright (c) 1991-2001 Jamie Zawinski <jwz@jwz.org>
+ * xscreensaver, Copyright (c) 1991-2003 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>
# include <X11/extensions/xf86vmode.h>
#endif /* HAVE_XF86VMODE */
-#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
#define XtAppContext void*
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_STATUS;
}
if (p->verbose_p)
- fprintf(stderr, "%s: %d: grabbing keyboard on 0x%x... %s.\n",
+ fprintf(stderr, "%s: %d: grabbing keyboard on 0x%lx... %s.\n",
blurb(), screen_no, (unsigned long) w, grab_string(status));
return status;
}
}
if (p->verbose_p)
- fprintf(stderr, "%s: %d: grabbing mouse on 0x%x... %s.\n",
+ 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: %d: ungrabbing keyboard (was 0x%x).\n",
+ 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: %d: ungrabbing mouse (was 0x%x).\n",
+ 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;
grab_keyboard_and_mouse (saver_info *si, Window window, Cursor cursor,
int screen_no)
{
- Status mstatus, kstatus;
+ Status mstatus = 0, kstatus = 0;
int i;
int retries = 4;
}
+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;
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)
== Success
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, *dataP);
+ safe_XKillClient (dpy, *dataP);
}
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) dataP, (dataP ? *dataP : 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)
int format;
unsigned long nitems, bytesafter;
Window *vrootP = 0;
+ 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,
}
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");
-#endif
+ catch_signal (si, SIGHUP, saver_sighup_handler);
- 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, 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, on_p);
+ catch_signal (si, SIGIOT, restore_real_vroot_handler);
#endif
- 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));
+ 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 (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)
XA_SCREENSAVER_STATUS,
XA_INTEGER, 32, PropModeReplace,
(unsigned char *) status, size);
+ free (status);
}
int dot;
XF86VidModeModeLine ml;
int x, y;
- Bool xinerama_p;
- Bool placement_only_p = (target_x != -1 && target_y != -1);
+ Bool xinerama_p = si->xinerama_p;
-#ifdef HAVE_XINERAMA
- xinerama_p = (XineramaQueryExtension (si->dpy, &event, &error) &&
- XineramaIsActive (si->dpy));
-#else /* !HAVE_XINERAMA */
+#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 && placement_only_p)
+ if (xinerama_p)
{
- int nscreens = 0;
- XineramaScreenInfo *xsi = XineramaQueryScreens (si->dpy, &nscreens);
- if (xsi)
+ 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)
{
- /* Find the screen that contains the mouse. */
- int which = -1;
- int i;
- for (i = 0; i < nscreens; i++)
- {
- if (target_x >= xsi[i].x_org &&
- target_y >= xsi[i].y_org &&
- target_x < xsi[i].x_org + xsi[i].width &&
- target_y < xsi[i].y_org + xsi[i].height)
- which = i;
- if (verbose_p)
- {
- fprintf (stderr, "%s: %d: xinerama vp: %dx%d+%d+%d",
- blurb(), i,
- xsi[which].width, xsi[which].height,
- xsi[i].x_org, xsi[i].y_org);
- if (which == i)
- fprintf (stderr, "; mouse at %d,%d",
- target_x, target_y);
- fprintf (stderr, ".\n");
- }
- }
- if (which == -1) which = 0; /* didn't find it? Use the first. */
- *x_ret = xsi[which].x_org;
- *y_ret = xsi[which].y_org;
- *w_ret = xsi[which].width;
- *h_ret = xsi[which].height;
- XFree (xsi);
- return;
+ 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) &&
- XF86VidModeGetModeLine (si->dpy, ssi->number, &dot, &ml) &&
- XF86VidModeGetViewPort (si->dpy, ssi->number, &x, &y))
+ safe_XF86VidModeGetViewPort (si->dpy, ssi->number, &x, &y) &&
+ XF86VidModeGetModeLine (si->dpy, ssi->number, &dot, &ml))
{
char msg[512];
*x_ret = x;
}
+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)
{
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)
;
/* 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);
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;
- else
+
+ for (i = 0; i < si->nscreens; i++)
{
- int i;
- 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)
{
- saver_screen_info *ssi = &si->screens[i];
- Window pointer_root, pointer_child;
- int root_x, root_y, win_x, win_y;
- unsigned int mask;
- if (XQueryPointer (si->dpy,
- RootWindowOfScreen (ssi->screen),
- &pointer_root, &pointer_child,
- &root_x, &root_y, &win_x, &win_y, &mask))
- {
- if (p->verbose_p)
- fprintf (stderr, "%s: mouse is on screen %d\n",
- blurb(), i, si->nscreens);
- return i;
- }
+ 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;
}
+
+ /* couldn't figure out where the mouse is? Oh well. */
+ return 0;
}
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);
{
int ev, er;
if (!XF86VidModeQueryExtension (si->dpy, &ev, &er) ||
- !XF86VidModeGetViewPort (si->dpy, i,
- &ssi->blank_vp_x,
- &ssi->blank_vp_y))
+ !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 */
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);
projects / xscreensaver / blobdiff