X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=driver%2Fwindows.c;h=73170415be7419b6ee7cbc2fbfc7cbde583c5cb2;hb=3210e7e80ee2b5a7d2049a5aaff9f17b9c93dcc9;hp=06c0bb4ecb865413585fbb1de208c719ac969927;hpb=5b7bc6e70fb439cf4c4bf771ae9f94077fe4fe08;p=xscreensaver diff --git a/driver/windows.c b/driver/windows.c index 06c0bb4e..73170415 100644 --- a/driver/windows.c +++ b/driver/windows.c @@ -1,5 +1,5 @@ /* windows.c --- turning the screen black; dealing with visuals, virtual roots. - * xscreensaver, Copyright (c) 1991-1997 Jamie Zawinski + * xscreensaver, Copyright (c) 1991-1998 Jamie Zawinski * * Permission to use, copy, modify, distribute, and sell this software and its * documentation for any purpose is hereby granted without fee, provided that @@ -17,14 +17,17 @@ #ifdef VMS # include /* for getpid() */ # include "vms-gtod.h" /* for gettimeofday() */ -# if !defined(HAVE_UNAME) && (__VMS_VER >= 70000000) -# define HAVE_UNAME 1 -# endif /* !HAVE_UNAME */ #endif /* VMS */ -# ifdef HAVE_UNAME -# include /* for uname() */ -# endif /* HAVE_UNAME */ +#ifndef VMS +# include /* for getpwuid() */ +#else /* VMS */ +# include "vms-pwd.h" +#endif /* VMS */ + +#ifdef HAVE_UNAME +# include /* for uname() */ +#endif /* HAVE_UNAME */ #include #include /* for CARD32 */ @@ -62,10 +65,19 @@ #include "visual.h" #include "fade.h" + +#ifdef HAVE_VT_LOCKSWITCH +# include +# include +# include + 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_SCREENSAVER_VERSION, XA_SCREENSAVER_ID; +Atom XA_SCREENSAVER, XA_SCREENSAVER_VERSION, XA_SCREENSAVER_ID; Atom XA_SCREENSAVER_TIME; @@ -80,50 +92,137 @@ static void store_activate_time (saver_info *si, Bool use_last_p); Button1MotionMask | Button2MotionMask | Button3MotionMask | \ Button4MotionMask | Button5MotionMask | ButtonMotionMask) -/* I don't really understand Sync vs Async, but these seem to work... */ -#define grab_kbd(dpy,win) \ - XGrabKeyboard ((dpy), (win), True, GrabModeSync, GrabModeAsync, CurrentTime) -#define grab_mouse(dpy,win,cursor) \ - XGrabPointer ((dpy), (win), True, ALL_POINTER_EVENTS, \ - GrabModeAsync, GrabModeAsync, None, cursor, CurrentTime) -void -grab_keyboard_and_mouse (Display *dpy, Window window, Cursor cursor) +static int +grab_kbd(saver_info *si, Window w) { - Status status; - XSync (dpy, False); + 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; + default: + { + static char foo[255]; + sprintf(foo, "unknown status: %d", status); + return foo; + } + } +} + + +static int +grab_mouse (saver_info *si, Window w, Cursor cursor) +{ + saver_preferences *p = &si->prefs; + int status = XGrabPointer (si->dpy, w, True, ALL_POINTER_EVENTS, + GrabModeAsync, GrabModeAsync, None, + cursor, CurrentTime); + if (status == GrabSuccess) + si->mouse_grab_window = w; - status = grab_kbd (dpy, window); - if (status != GrabSuccess) + if (p->verbose_p) + fprintf(stderr, "%s: grabbing mouse on 0x%x... %s.\n", + blurb(), (unsigned long) w, grab_string(status)); + return status; +} + + +static void +ungrab_kbd(saver_info *si) +{ + 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); + si->keyboard_grab_window = 0; +} + + +static void +ungrab_mouse(saver_info *si) +{ + 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); + si->mouse_grab_window = 0; +} + + +Bool +grab_keyboard_and_mouse (saver_info *si, Window window, Cursor cursor) +{ + Status mstatus, kstatus; + XSync (si->dpy, False); + + kstatus = grab_kbd (si, window); + if (kstatus != GrabSuccess) { /* try again in a second */ sleep (1); - status = grab_kbd (dpy, window); - if (status != GrabSuccess) - fprintf (stderr, "%s: couldn't grab keyboard! (%d)\n", - progname, status); + kstatus = grab_kbd (si, window); + if (kstatus != GrabSuccess) + fprintf (stderr, "%s: couldn't grab keyboard! (%s)\n", + blurb(), grab_string(kstatus)); } - status = grab_mouse (dpy, window, cursor); - if (status != GrabSuccess) + + mstatus = grab_mouse (si, window, cursor); + if (mstatus != GrabSuccess) { /* try again in a second */ sleep (1); - status = grab_mouse (dpy, window, cursor); - if (status != GrabSuccess) - fprintf (stderr, "%s: couldn't grab pointer! (%d)\n", - progname, status); + 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); } void -ungrab_keyboard_and_mouse (Display *dpy) +ungrab_keyboard_and_mouse (saver_info *si) { - XUngrabPointer (dpy, CurrentTime); - XUngrabKeyboard (dpy, CurrentTime); + ungrab_mouse (si); + ungrab_kbd (si); } -void +/* Prints an error message to stderr and returns True if there is another + xscreensaver running already. Silently returns False otherwise. */ +Bool ensure_no_screensaver_running (Display *dpy, Screen *screen) { + Bool status = 0; int i; Window root = RootWindowOfScreen (screen); Window root2, parent, *kids; @@ -159,14 +258,15 @@ ensure_no_screensaver_running (Display *dpy, Screen *screen) fprintf (stderr, "%s: already running on display %s (window 0x%x)\n from process %s.\n", - progname, DisplayString (dpy), (int) kids [i], id); - exit (1); + blurb(), DisplayString (dpy), (int) kids [i], id); + status = True; } } if (kids) XFree ((char *) kids); XSync (dpy, False); XSetErrorHandler (old_handler); + return status; } @@ -183,7 +283,7 @@ store_vroot_property (Display *dpy, Window win, Window value) #if 0 if (p->verbose_p) fprintf (stderr, - "%s: storing XA_VROOT = 0x%x (%s) = 0x%x (%s)\n", progname, + "%s: storing XA_VROOT = 0x%x (%s) = 0x%x (%s)\n", blurb(), win, (win == screensaver_window ? "ScreenSaver" : (win == real_vroot ? "VRoot" : @@ -202,7 +302,7 @@ remove_vroot_property (Display *dpy, Window win) { #if 0 if (p->verbose_p) - fprintf (stderr, "%s: removing XA_VROOT from 0x%x (%s)\n", progname, win, + fprintf (stderr, "%s: removing XA_VROOT from 0x%x (%s)\n", blurb(), win, (win == screensaver_window ? "ScreenSaver" : (win == real_vroot ? "VRoot" : (win == real_vroot_value ? "Vroot_value" : "???")))); @@ -241,14 +341,14 @@ kill_xsetroot_data (Display *dpy, Window window, Bool verbose_p) nitems == 1 && bytesafter == 0) { if (verbose_p) - printf ("%s: destroying xsetroot data (0x%lX).\n", - progname, *dataP); + fprintf (stderr, "%s: destroying xsetroot data (0x%lX).\n", + blurb(), *dataP); XKillClient (dpy, *dataP); } else fprintf (stderr, "%s: deleted unrecognised _XSETROOT_ID property: \n\ %lu, %lu; type: %lu, format: %d, nitems: %lu, bytesafter %ld\n", - progname, (unsigned long) dataP, (dataP ? *dataP : 0), type, + blurb(), (unsigned long) dataP, (dataP ? *dataP : 0), type, format, nitems, bytesafter); } } @@ -266,6 +366,16 @@ save_real_vroot (saver_screen_info *ssi) Window root = RootWindowOfScreen (screen); Window root2, parent, *kids; unsigned int nkids; + XErrorHandler old_handler; + + /* It's possible that a window might be deleted between our call to + XQueryTree() and our call to XGetWindowProperty(). Don't die if + that happens (but just ignore that window, it's not the one we're + interested in anyway.) + */ + XSync (dpy, False); + old_handler = XSetErrorHandler (BadWindow_ehandler); + XSync (dpy, False); ssi->real_vroot = 0; ssi->real_vroot_value = 0; @@ -294,13 +404,17 @@ save_real_vroot (saver_screen_info *ssi) if (*vrootP == ssi->screensaver_window) abort (); fprintf (stderr, "%s: more than one virtual root window found (0x%x and 0x%x).\n", - progname, (int) ssi->real_vroot, (int) kids [i]); + blurb(), (int) ssi->real_vroot, (int) kids [i]); exit (1); } ssi->real_vroot = kids [i]; ssi->real_vroot_value = *vrootP; } + XSync (dpy, False); + XSetErrorHandler (old_handler); + XSync (dpy, False); + if (ssi->real_vroot) { handle_signals (si, True); @@ -318,8 +432,9 @@ restore_real_vroot_2 (saver_screen_info *ssi) saver_info *si = ssi->global; saver_preferences *p = &si->prefs; if (p->verbose_p && ssi->real_vroot) - printf ("%s: restoring __SWM_VROOT property on the real vroot (0x%lx).\n", - progname, (unsigned long) ssi->real_vroot); + fprintf (stderr, + "%s: restoring __SWM_VROOT property on the real vroot (0x%lx).\n", + blurb(), (unsigned long) ssi->real_vroot); remove_vroot_property (si->dpy, ssi->screensaver_window); if (ssi->real_vroot) { @@ -444,7 +559,7 @@ restore_real_vroot_handler (int sig) signal (sig, SIG_DFL); if (restore_real_vroot_1 (si)) fprintf (real_stderr, "\n%s: %s intercepted, vroot restored.\n", - progname, signal_name(sig)); + blurb(), signal_name(sig)); kill (getpid (), sig); } @@ -458,9 +573,9 @@ catch_signal (saver_info *si, int sig, Bool on_p) if (((long) signal (sig, restore_real_vroot_handler)) == -1L) { char buf [255]; - sprintf (buf, "%s: couldn't catch %s", progname, signal_name(sig)); + sprintf (buf, "%s: couldn't catch %s", blurb(), signal_name(sig)); perror (buf); - saver_exit (si, 1); + saver_exit (si, 1, 0); } } } @@ -469,8 +584,8 @@ static void handle_signals (saver_info *si, Bool on_p) { #if 0 - if (on_p) printf ("handling signals\n"); - else printf ("unhandling signals\n"); + if (on_p) fprintf (stderr, "handling signals\n"); + else fprintf (stderr, "unhandling signals\n"); #endif catch_signal (si, SIGHUP, on_p); @@ -502,10 +617,11 @@ handle_signals (saver_info *si, Bool on_p) } void -saver_exit (saver_info *si, int status) +saver_exit (saver_info *si, int status, const char *dump_core_reason) { saver_preferences *p = &si->prefs; static Bool exiting = False; + Bool bugp; Bool vrs; if (exiting) @@ -517,9 +633,9 @@ saver_exit (saver_info *si, int status) emergency_kill_subproc (si); if (vrs && (p->verbose_p || status != 0)) - fprintf (real_stderr, "%s: vroot restored, exiting.\n", progname); + fprintf (real_stderr, "%s: vroot restored, exiting.\n", blurb()); else if (p->verbose_p) - fprintf (real_stderr, "%s: no vroot to restore; exiting.\n", progname); + fprintf (real_stderr, "%s: no vroot to restore; exiting.\n", blurb()); fflush(real_stdout); @@ -528,11 +644,41 @@ saver_exit (saver_info *si, int status) else if (status == 1) status = -1; #endif -#ifdef DEBUG - if (si->prefs.debug_p) - /* Do this to drop a core file, so that we can get a stack trace. */ - abort(); -#endif + bugp = !!dump_core_reason; + + if (si->prefs.debug_p && !dump_core_reason) + dump_core_reason = "because of -debug"; + + if (dump_core_reason) + { + /* Note that the Linux man page for setuid() says If uid is + different from the old effective uid, the process will be + forbidden from leaving core dumps. + */ + char cwd[4096]; /* should really be PATH_MAX, but who cares. */ + cwd[0] = 0; + fprintf(real_stderr, "%s: dumping core (%s)\n", blurb(), + dump_core_reason); + + if (bugp) + fprintf(real_stderr, + "%s: see http://www.jwz.org/xscreensaver/bugs.html\n" + "\t\tfor bug reporting information.\n\n", + blurb()); + +# if defined(HAVE_GETCWD) + if (!getcwd (cwd, sizeof(cwd))) +# elif defined(HAVE_GETWD) + if (!getwd (cwd)) +# endif + strcpy(cwd, "unknown."); + + fprintf (real_stderr, "%s: current directory is %s\n", blurb(), cwd); + describe_uids (si, real_stderr); + + /* Do this to drop a core file, so that we can get a stack trace. */ + abort(); + } exit (status); } @@ -553,12 +699,77 @@ window_exists_p (Display *dpy, Window window) return (xgwa.screen != 0); } +static void +store_saver_id (saver_screen_info *ssi) +{ + XClassHint class_hints; + saver_info *si = ssi->global; + unsigned long pid = (unsigned long) getpid (); + char buf[20]; + 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; + class_hints.res_class = progclass; + XSetClassHint (si->dpy, ssi->screensaver_window, &class_hints); + XStoreName (si->dpy, ssi->screensaver_window, "screensaver"); + + /* Then store the xscreensaver version number. + */ + XChangeProperty (si->dpy, ssi->screensaver_window, + XA_SCREENSAVER_VERSION, + XA_STRING, 8, PropModeReplace, + (unsigned char *) si->version, + strlen (si->version)); + + /* Now store the XSCREENSAVER_ID property, that says what user and host + xscreensaver is running as. + */ + + if (p && p->pw_name && *p->pw_name) + name = p->pw_name; + else if (p) + { + sprintf (buf, "%lu", (unsigned long) p->pw_uid); + name = buf; + } + else + name = "???"; + +# if defined(HAVE_UNAME) + { + struct utsname uts; + if (uname (&uts) < 0) + host = "???"; + else + host = uts.nodename; + } +# elif defined(VMS) + host = getenv("SYS$NODE"); +# else /* !HAVE_UNAME && !VMS */ + host = "???"; +# endif /* !HAVE_UNAME && !VMS */ + + id = (char *) malloc (strlen(name) + strlen(host) + 50); + sprintf (id, "%lu (%s@%s)", pid, name, host); + + XChangeProperty (si->dpy, ssi->screensaver_window, + XA_SCREENSAVER_ID, XA_STRING, + 8, PropModeReplace, + (unsigned char *) id, strlen (id)); + free (id); +} + + static void initialize_screensaver_window_1 (saver_screen_info *ssi) { saver_info *si = ssi->global; saver_preferences *p = &si->prefs; - Bool install_cmap_p = ssi->install_cmap_p; + Bool install_cmap_p = (ssi->install_cmap_p || p->install_cmap_p); /* This resets the screensaver window as fully as possible, since there's no way of knowing what some random client may have done to us in the @@ -566,12 +777,10 @@ initialize_screensaver_window_1 (saver_screen_info *ssi) its own set of problems... */ XColor black; - XClassHint class_hints; XSetWindowAttributes attrs; unsigned long attrmask; int width = WidthOfScreen (ssi->screen); int height = HeightOfScreen (ssi->screen); - char id [2048]; static Bool printed_visual_info = False; /* only print the message once. */ black.red = black.green = black.blue = 0; @@ -586,7 +795,8 @@ initialize_screensaver_window_1 (saver_screen_info *ssi) { if (! ssi->cmap) { - ssi->cmap = XCreateColormap (si->dpy, RootWindowOfScreen (ssi->screen), + ssi->cmap = XCreateColormap (si->dpy, + RootWindowOfScreen (ssi->screen), ssi->current_visual, AllocNone); if (! XAllocColor (si->dpy, ssi->cmap, &black)) abort (); ssi->black_pixel = black.pixel; @@ -624,29 +834,30 @@ initialize_screensaver_window_1 (saver_screen_info *ssi) attrs.backing_pixel = ssi->black_pixel; attrs.border_pixel = ssi->black_pixel; -#ifdef DEBUG if (p->debug_p) width = width / 2; -#endif /* DEBUG */ if (!p->verbose_p || printed_visual_info) ; else if (ssi->current_visual == DefaultVisualOfScreen (ssi->screen)) { - fprintf (stderr, "%s: using default visual ", progname); - describe_visual (stderr, ssi->screen, ssi->current_visual); + fprintf (stderr, "%s: using default visual ", blurb()); + describe_visual (stderr, ssi->screen, ssi->current_visual, + install_cmap_p); } else { - fprintf (stderr, "%s: using visual: ", progname); - describe_visual (stderr, ssi->screen, ssi->current_visual); - fprintf (stderr, "%s: default visual: ", progname); + fprintf (stderr, "%s: using visual: ", blurb()); + describe_visual (stderr, ssi->screen, ssi->current_visual, + install_cmap_p); + fprintf (stderr, "%s: default visual: ", blurb()); describe_visual (stderr, ssi->screen, - DefaultVisualOfScreen (ssi->screen)); + DefaultVisualOfScreen (ssi->screen), + ssi->install_cmap_p); } printed_visual_info = True; #ifdef HAVE_MIT_SAVER_EXTENSION - if (p->use_mit_saver_extension) + if (si->using_mit_saver_extension) { XScreenSaverInfo *info; Window root = RootWindowOfScreen (ssi->screen); @@ -721,71 +932,31 @@ initialize_screensaver_window_1 (saver_screen_info *ssi) store_activate_time(si, True); if (p->verbose_p) fprintf (stderr, "%s: saver window is 0x%lx.\n", - progname, (unsigned long) ssi->screensaver_window); + blurb(), (unsigned long) ssi->screensaver_window); } -#ifdef HAVE_MIT_SAVER_EXTENSION - if (!p->use_mit_saver_extension || - window_exists_p (si->dpy, ssi->screensaver_window)) - /* When using the MIT-SCREEN-SAVER extension, the window pointed to - by screensaver_window only exists while the saver is active. - So we must be careful to only try and manipulate it while it - exists... - (#### The above comment would be true if the MIT extension actually - worked, but it's not true today -- see `server_mit_saver_window'.) - */ -#endif /* HAVE_MIT_SAVER_EXTENSION */ - { - class_hints.res_name = progname; - class_hints.res_class = progclass; - XSetClassHint (si->dpy, ssi->screensaver_window, &class_hints); - XStoreName (si->dpy, ssi->screensaver_window, "screensaver"); - XChangeProperty (si->dpy, ssi->screensaver_window, - XA_SCREENSAVER_VERSION, - XA_STRING, 8, PropModeReplace, - (unsigned char *) si->version, - strlen (si->version)); - - sprintf (id, "%lu on host ", (unsigned long) getpid ()); -# if defined(HAVE_UNAME) - { - struct utsname uts; - if (uname (&uts) < 0) - strcat (id, "???"); - else - strcat (id, uts.nodename); - } -# elif defined(VMS) - strcat (id, getenv("SYS$NODE")); -# else /* !HAVE_UNAME && !VMS */ - strcat (id, "???"); -# endif /* !HAVE_UNAME && !VMS */ + store_saver_id (ssi); - XChangeProperty (si->dpy, ssi->screensaver_window, - XA_SCREENSAVER_ID, XA_STRING, - 8, PropModeReplace, (unsigned char *) id, strlen (id)); + if (!ssi->cursor) + { + Pixmap bit; + bit = XCreatePixmapFromBitmapData (si->dpy, ssi->screensaver_window, + "\000", 1, 1, + BlackPixelOfScreen (ssi->screen), + BlackPixelOfScreen (ssi->screen), + 1); + ssi->cursor = XCreatePixmapCursor (si->dpy, bit, bit, &black, &black, + 0, 0); + XFreePixmap (si->dpy, bit); + } - if (!ssi->cursor) - { - Pixmap bit; - bit = XCreatePixmapFromBitmapData (si->dpy, ssi->screensaver_window, - "\000", 1, 1, - BlackPixelOfScreen (ssi->screen), - BlackPixelOfScreen (ssi->screen), - 1); - ssi->cursor = XCreatePixmapCursor (si->dpy, bit, bit, &black, &black, - 0, 0); - XFreePixmap (si->dpy, bit); - } + XSetWindowBackground (si->dpy, ssi->screensaver_window, ssi->black_pixel); - XSetWindowBackground (si->dpy, ssi->screensaver_window, - ssi->black_pixel); - if (si->demo_mode_p) - XUndefineCursor (si->dpy, ssi->screensaver_window); - else - XDefineCursor (si->dpy, ssi->screensaver_window, ssi->cursor); - } + if (si->demoing_p) + XUndefineCursor (si->dpy, ssi->screensaver_window); + else + XDefineCursor (si->dpy, ssi->screensaver_window, ssi->cursor); } void @@ -804,12 +975,14 @@ raise_window (saver_info *si, saver_preferences *p = &si->prefs; int i; + if (si->demoing_p) + inhibit_fade = True; + initialize_screensaver_window (si); reset_watchdog_timer (si, True); - if (p->fade_p && !inhibit_fade && !si->demo_mode_p) + if (p->fade_p && p->fading_possible_p && !inhibit_fade) { - int grabbed = -1; Window *current_windows = (Window *) calloc(sizeof(Window), si->nscreens); Colormap *current_maps = (Colormap *) @@ -822,36 +995,39 @@ raise_window (saver_info *si, current_maps[i] = (between_hacks_p ? ssi->cmap : DefaultColormapOfScreen (ssi->screen)); + /* Ensure that the default background of the window is really black, + not a pixmap or something. (This does not clear the window.) */ + XSetWindowBackground (si->dpy, ssi->screensaver_window, + ssi->black_pixel); } - if (p->verbose_p) fprintf (stderr, "%s: fading... ", progname); - - XGrabServer (si->dpy); - - for (i = 0; i < si->nscreens; i++) - { - saver_screen_info *ssi = &si->screens[i]; + if (p->verbose_p) fprintf (stderr, "%s: fading...\n", blurb()); - /* grab and blacken mouse on the root window (saver not mapped yet) - */ - if (grabbed != GrabSuccess) - grabbed = grab_mouse (si->dpy, ssi->screensaver_window, - (si->demo_mode_p ? 0 : ssi->cursor)); + XGrabServer (si->dpy); /* ############ DANGER! */ - if (!dont_clear || ssi->stderr_overlay_window) - /* Do this before the fade, since the stderr cmap won't fade - even if we uninstall it (beats me...) */ - clear_stderr (ssi); - } + /* Clear the stderr layer on each screen. + */ + if (!dont_clear) + for (i = 0; i < si->nscreens; i++) + { + saver_screen_info *ssi = &si->screens[i]; + if (ssi->stderr_overlay_window) + /* Do this before the fade, since the stderr cmap won't fade + even if we uninstall it (beats me...) */ + clear_stderr (ssi); + } + /* Note! The server is grabbed, and this will take several seconds + to complete! */ fade_screens (si->dpy, current_maps, current_windows, - p->fade_seconds, p->fade_ticks, True, !dont_clear); + p->fade_seconds/1000, p->fade_ticks, True, !dont_clear); + free(current_maps); free(current_windows); current_maps = 0; current_windows = 0; - if (p->verbose_p) fprintf (stderr, "fading done.\n"); + if (p->verbose_p) fprintf (stderr, "%s: fading done.\n", blurb()); #ifdef HAVE_MIT_SAVER_EXTENSION for (i = 0; i < si->nscreens; i++) @@ -863,9 +1039,8 @@ raise_window (saver_info *si, } #endif /* HAVE_MIT_SAVER_EXTENSION */ - if (grabbed == GrabSuccess) - XUngrabPointer (si->dpy, CurrentTime); XUngrabServer (si->dpy); + XSync (si->dpy, False); /* ###### (danger over) */ } else { @@ -897,6 +1072,18 @@ void blank_screen (saver_info *si) { int i; + + /* 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. + */ + grab_keyboard_and_mouse (si, + /*si->screens[0].screensaver_window,*/ + RootWindowOfScreen(si->screens[0].screen), + (si->demoing_p + ? 0 + : si->screens[0].cursor)); + for (i = 0; i < si->nscreens; i++) { saver_screen_info *ssi = &si->screens[i]; @@ -908,9 +1095,7 @@ blank_screen (saver_info *si) } store_activate_time (si, si->screen_blanked_p); raise_window (si, False, False, False); - /* #### */ - grab_keyboard_and_mouse (si->dpy, si->screens[0].screensaver_window, - (si->demo_mode_p ? 0 : si->screens[0].cursor)); + #ifdef HAVE_XHPDISABLERESET if (si->locked_p && !hp_locked_p) { @@ -919,6 +1104,11 @@ blank_screen (saver_info *si) } #endif +#ifdef HAVE_VT_LOCKSWITCH + if (si->locked_p) + lock_vt (si, True); /* turn off C-Alt-Fn */ +#endif + si->screen_blanked_p = True; } @@ -926,14 +1116,19 @@ void unblank_screen (saver_info *si) { saver_preferences *p = &si->prefs; + Bool unfade_p = (p->fading_possible_p && p->unfade_p); int i; + monitor_power_on (si); + store_activate_time (si, True); reset_watchdog_timer (si, False); - if (p->unfade_p && !si->demo_mode_p) + if (si->demoing_p) + unfade_p = False; + + if (unfade_p) { - int grabbed = -1; Window *current_windows = (Window *) calloc(sizeof(Window), si->nscreens); @@ -941,31 +1136,39 @@ unblank_screen (saver_info *si) { saver_screen_info *ssi = &si->screens[i]; current_windows[i] = ssi->screensaver_window; + /* Ensure that the default background of the window is really black, + not a pixmap or something. (This does not clear the window.) */ + XSetWindowBackground (si->dpy, ssi->screensaver_window, + ssi->black_pixel); } - if (p->verbose_p) fprintf (stderr, "%s: unfading... ", progname); + if (p->verbose_p) fprintf (stderr, "%s: unfading...\n", blurb()); + - XGrabServer (si->dpy); + XSync (si->dpy, False); + XGrabServer (si->dpy); /* ############ DANGER! */ + XSync (si->dpy, False); + + /* Clear the stderr layer on each screen. + */ for (i = 0; i < si->nscreens; i++) { saver_screen_info *ssi = &si->screens[i]; - if (grabbed != GrabSuccess) - grabbed = grab_mouse (si->dpy, RootWindowOfScreen (ssi->screen), - 0); clear_stderr (ssi); } + XUngrabServer (si->dpy); + XSync (si->dpy, False); /* ###### (danger over) */ + fade_screens (si->dpy, 0, current_windows, - p->fade_seconds, p->fade_ticks, + p->fade_seconds/1000, p->fade_ticks, False, False); free(current_windows); current_windows = 0; - if (p->verbose_p) fprintf (stderr, "unfading done.\n"); - if (grabbed == GrabSuccess) - XUngrabPointer (si->dpy, CurrentTime); + if (p->verbose_p) fprintf (stderr, "%s: unfading done.\n", blurb()); } else { @@ -1014,7 +1217,7 @@ unblank_screen (saver_info *si) store_activate_time(si, False); /* store unblank time */ - ungrab_keyboard_and_mouse (si->dpy); + ungrab_keyboard_and_mouse (si); restore_real_vroot (si); #ifdef HAVE_XHPDISABLERESET @@ -1025,6 +1228,17 @@ unblank_screen (saver_info *si) } #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.) + */ + for (i = 0; i < si->nscreens; i++) + XUnmapWindow (si->dpy, si->screens[i].screensaver_window); + si->screen_blanked_p = False; } @@ -1094,16 +1308,12 @@ select_visual (saver_screen_info *ssi, const char *visual_name) if (p->verbose_p) { + fprintf (stderr, "%s: switching to visual ", blurb()); + describe_visual (stderr, ssi->screen, new_v, install_cmap_p); #if 0 - fprintf (stderr, "%s: switching visuals\tfrom: ", progname); - describe_visual (stderr, ssi->screen, ssi->current_visual); - fprintf (stderr, "\t\t\t\tto: "); - describe_visual (stderr, ssi->screen, new_v); - fprintf (stderr, "\t\t\t\t install cmap: %s\n", - (install_cmap_p ? "yes" : "no")); -#else - fprintf (stderr, "%s: switching to visual ", progname); - describe_visual (stderr, ssi->screen, new_v); + fprintf (stderr, "%s: from ", blurb()); + describe_visual (stderr, ssi->screen, ssi->current_visual, + was_installed_p); #endif } @@ -1114,12 +1324,64 @@ select_visual (saver_screen_info *ssi, const char *visual_name) ssi->screensaver_window = 0; initialize_screensaver_window_1 (ssi); + + /* stderr_overlay_window is a child of screensaver_window, so we need + to destroy that as well (actually, we just need to invalidate and + drop our pointers to it, but this will destroy it, which is ok so + long as it happens before old_w itself is destroyed.) */ + reset_stderr (ssi); + 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... + */ + + + /* 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. */ + XDestroyWindow (si->dpy, old_w); + + if (p->verbose_p) + fprintf (stderr, "%s: destroyed old saver window 0x%lx.\n", + blurb(), (unsigned long) old_w); + if (old_c && old_c != DefaultColormapOfScreen (ssi->screen) && old_c != ssi->demo_cmap) @@ -1128,3 +1390,56 @@ select_visual (saver_screen_info *ssi, const char *visual_name) return got_it; } + + +/* 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 */