X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=driver%2Fxscreensaver.c;h=08d98e4f82d3474d4f0628e451f593098528a3de;hb=a1d41b2aa6e18bf9a49b914a99dda8232c5d7762;hp=c88f36cc9fed32fbc009d333a6f6cc7ab2a13d39;hpb=df7adbee81405e2849728a24b498ad2117784b1f;p=xscreensaver diff --git a/driver/xscreensaver.c b/driver/xscreensaver.c index c88f36cc..08d98e4f 100644 --- a/driver/xscreensaver.c +++ b/driver/xscreensaver.c @@ -1,4 +1,4 @@ -/* xscreensaver, Copyright (c) 1991-1999 Jamie Zawinski +/* xscreensaver, Copyright (c) 1991-2001 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 @@ -59,7 +59,7 @@ * This program accepts ClientMessages of type SCREENSAVER; these messages * may contain the atom ACTIVATE or DEACTIVATE, meaning to turn the * screensaver on or off now, regardless of the idleness of the user, - * and a few other things. The included "xscreensaver_command" program + * and a few other things. The included "xscreensaver-command" program * sends these messsages. * * If we don't have the XIdle, MIT-SCREEN-SAVER, or SGI SCREEN_SAVER @@ -70,8 +70,9 @@ * KeyPress on windows which don't select them, because that would * interfere with event propagation. This will break if any program * changes its event mask to contain KeyRelease or PointerMotion more than - * 30 seconds after creating the window, but that's probably pretty rare. - * + * 30 seconds after creating the window, but such programs do not seem to + * occur in nature (I've never seen it happen in all these years.) + * * The reason that we can't select KeyPresses on windows that don't have * them already is that, when dispatching a KeyPress event, X finds the * lowest (leafmost) window in the hierarchy on which *any* client selects @@ -110,13 +111,13 @@ * to keep your emacs window alive even when xscreensaver has grabbed. * - Go read the code related to `debug_p'. * - You probably can't set breakpoints in functions that are called on - * the other side of a call to fork() -- if your clients are dying - * with signal 5, Trace/BPT Trap, you're losing in this way. + * the other side of a call to fork() -- if your subprocesses are + * dying with signal 5, Trace/BPT Trap, you're losing in this way. * - If you aren't using a server extension, don't leave this stopped * under the debugger for very long, or the X input buffer will get * huge because of the keypress events it's selecting for. This can * make your X server wedge with "no more input buffers." - * + * * ======================================================================== */ #ifdef HAVE_CONFIG_H @@ -162,9 +163,9 @@ XrmDatabase db = 0; static Atom XA_SCREENSAVER_RESPONSE; static Atom XA_ACTIVATE, XA_DEACTIVATE, XA_CYCLE, XA_NEXT, XA_PREV; -static Atom XA_EXIT, XA_RESTART, XA_LOCK, XA_SELECT; +static Atom XA_RESTART, XA_SELECT; static Atom XA_THROTTLE, XA_UNTHROTTLE; -Atom XA_DEMO, XA_PREFS; +Atom XA_DEMO, XA_PREFS, XA_EXIT, XA_LOCK, XA_BLANK; static XrmOptionDescRec options [] = { @@ -218,7 +219,7 @@ do_help (saver_info *si) fflush (stdout); fflush (stderr); fprintf (stdout, "\ -xscreensaver %s, copyright (c) 1991-1999 by Jamie Zawinski \n\ +xscreensaver %s, copyright (c) 1991-2001 by Jamie Zawinski \n\ The standard Xt command-line options are accepted; other options include:\n\ \n\ -timeout When the screensaver should activate.\n\ @@ -291,16 +292,27 @@ int saver_ehandler (Display *dpy, XErrorEvent *error) { saver_info *si = global_si_kludge; /* I hate C so much... */ + int i; if (!real_stderr) real_stderr = stderr; fprintf (real_stderr, "\n" "#######################################" "#######################################\n\n" - "%s: X Error! PLEASE REPORT THIS BUG.\n\n" - "#######################################" - "#######################################\n\n", + "%s: X Error! PLEASE REPORT THIS BUG.\n", blurb()); + + for (i = 0; i < si->nscreens; i++) + fprintf (real_stderr, "%s: screen %d: 0x%x, 0x%x, 0x%x\n", + blurb(), i, + RootWindowOfScreen (si->screens[i].screen), + si->screens[i].real_vroot, + si->screens[i].screensaver_window); + + fprintf (real_stderr, "\n" + "#######################################" + "#######################################\n\n"); + if (XmuPrintDefaultErrorMessage (dpy, error, real_stderr)) { fprintf (real_stderr, "\n"); @@ -314,15 +326,17 @@ saver_ehandler (Display *dpy, XErrorEvent *error) "#######################################" "#######################################\n\n"); fprintf (real_stderr, - " If at all possible, please re-run xscreensaver with the command line\n" - " arguments `-sync -verbose', and reproduce this bug. That will cause\n" - " xscreensaver to dump a `core' file to the current directory. Please\n" - " include the stack trace from that core file in your bug report.\n" + " If at all possible, please re-run xscreensaver with the command\n" + " line arguments `-sync -verbose -no-capture', and reproduce this\n" + " bug. That will cause xscreensaver to dump a `core' file to the\n" + " current directory. Please include the stack trace from that core\n" + " file in your bug report. *DO NOT* mail the core file itself!\n" + " That won't work.\n" "\n" - " http://www.jwz.org/xscreensaver/bugs.html explains how to create the\n" - " most useful bug reports, and how to examine core files.\n" + " http://www.jwz.org/xscreensaver/bugs.html explains how to create\n" + " the most useful bug reports, and how to examine core files.\n" "\n" - " The more information you can provide, the better. But please report\n" + " The more information you can provide, the better. But please\n" " report this bug, regardless!\n" "\n"); fprintf (real_stderr, @@ -367,14 +381,32 @@ startup_ehandler (String name, String type, String class, fprintf (stderr, "\n"); describe_uids (si, stderr); - fprintf (stderr, "\n" - "%s: Errors at startup are usually authorization problems.\n" - " Did you read the manual? Specifically, the parts\n" - " that talk about XAUTH, XDM, and root logins?\n" - "\n" - " http://www.jwz.org/xscreensaver/man.html\n" - "\n", + + if (si->orig_uid && !strncmp (si->orig_uid, "root/", 5)) + { + fprintf (stderr, "\n" + "%s: This is probably because you're logging in as root. You\n" +" shouldn't log in as root: you should log in as a normal user,\n" +" and then `su' as needed. If you insist on logging in as\n" +" root, you will have to turn off X's security features before\n" +" xscreensaver will work.\n" + "\n" +" Please read the manual and FAQ for more information:\n", + blurb()); + } + else + { + fprintf (stderr, "\n" + "%s: Errors at startup are usually authorization problems.\n" +" But you're not logging in as root (good!) so something\n" +" else must be wrong. Did you read the manual and the FAQ?\n", blurb()); + } + + fprintf (stderr, "\n" + " http://www.jwz.org/xscreensaver/faq.html\n" + " http://www.jwz.org/xscreensaver/man.html\n" + "\n"); fflush (stderr); fflush (stdout); @@ -458,6 +490,20 @@ connect_to_server (saver_info *si, int *argc, char **argv) { Widget toplevel_shell; +#ifdef HAVE_PUTENV + char *d = getenv ("DISPLAY"); + if (!d || !*d) + { + char ndpy[] = "DISPLAY=:0.0"; + /* if (si->prefs.verbose_p) */ /* sigh, too early to test this... */ + fprintf (stderr, + "%s: warning: $DISPLAY is not set: defaulting to \"%s\".\n", + blurb(), ndpy+8); + if (putenv (ndpy)) + abort (); + } +#endif /* HAVE_PUTENV */ + XSetErrorHandler (saver_ehandler); XtAppSetErrorMsgHandler (si->app, startup_ehandler); @@ -479,7 +525,7 @@ connect_to_server (saver_info *si, int *argc, char **argv) XA_SCREENSAVER = XInternAtom (si->dpy, "SCREENSAVER", False); XA_SCREENSAVER_VERSION = XInternAtom (si->dpy, "_SCREENSAVER_VERSION",False); XA_SCREENSAVER_ID = XInternAtom (si->dpy, "_SCREENSAVER_ID", False); - XA_SCREENSAVER_TIME = XInternAtom (si->dpy, "_SCREENSAVER_TIME", False); + XA_SCREENSAVER_STATUS = XInternAtom (si->dpy, "_SCREENSAVER_STATUS", False); XA_SCREENSAVER_RESPONSE = XInternAtom (si->dpy, "_SCREENSAVER_RESPONSE", False); XA_XSETROOT_ID = XInternAtom (si->dpy, "_XSETROOT_ID", False); @@ -494,6 +540,7 @@ connect_to_server (saver_info *si, int *argc, char **argv) XA_DEMO = XInternAtom (si->dpy, "DEMO", False); XA_PREFS = XInternAtom (si->dpy, "PREFS", False); XA_LOCK = XInternAtom (si->dpy, "LOCK", False); + XA_BLANK = XInternAtom (si->dpy, "BLANK", False); XA_THROTTLE = XInternAtom (si->dpy, "THROTTLE", False); XA_UNTHROTTLE = XInternAtom (si->dpy, "UNTHROTTLE", False); @@ -588,7 +635,7 @@ print_banner (saver_info *si) if (p->verbose_p) fprintf (stderr, - "%s %s, copyright (c) 1991-1999 " + "%s %s, copyright (c) 1991-2001 " "by Jamie Zawinski .\n", progname, si->version); @@ -644,7 +691,7 @@ print_banner (saver_info *si) /* Examine all of the display's screens, and populate the `saver_screen_info' - structures. + structures. Make sure this is called after hack_environment() sets $PATH. */ static void initialize_per_screen_info (saver_info *si, Widget toplevel_shell) @@ -671,6 +718,9 @@ initialize_per_screen_info (saver_info *si, Widget toplevel_shell) ssi->current_visual = ssi->default_visual; ssi->current_depth = visual_depth (ssi->screen, ssi->current_visual); + /* Execute a subprocess to find the GL visual. */ + ssi->best_gl_visual = get_best_gl_visual (ssi); + if (ssi == si->default_screen) /* Since this is the default screen, use the one already created. */ ssi->toplevel_shell = toplevel_shell; @@ -701,6 +751,10 @@ initialize_per_screen_info (saver_info *si, Widget toplevel_shell) } si->fading_possible_p = found_any_writable_cells; + +#ifdef HAVE_XF86VMODE_GAMMA + si->fading_possible_p = True; /* if we can gamma fade, go for it */ +#endif } @@ -858,6 +912,14 @@ maybe_reload_init_file (saver_info *si) /* If a server extension is in use, and p->timeout has changed, we need to inform the server of the new timeout. */ disable_builtin_screensaver (si, False); + + /* If the DPMS settings in the init file have changed, + change the settings on the server to match. */ + sync_server_dpms_settings (si->dpy, p->dpms_enabled_p, + p->dpms_standby / 1000, + p->dpms_suspend / 1000, + p->dpms_off / 1000, + False); } } @@ -991,6 +1053,20 @@ main_loop (saver_info *si) si->dbox_up_p = False; XDefineCursor (si->dpy, ssi->screensaver_window, ssi->cursor); suspend_screenhack (si, False); /* resume */ + + if (!ok_to_unblank && + !screenhack_running_p (si)) + { + /* If the lock dialog has been dismissed and we're not about to + unlock the screen, and there is currently no hack running, + then launch one. (There might be no hack running if DPMS + had kicked in. But DPMS is off now, so bring back the hack) + */ + if (si->cycle_id) + XtRemoveTimeOut (si->cycle_id); + si->cycle_id = 0; + cycle_timer ((XtPointer) si, 0); + } } #endif /* !NO_LOCKING */ @@ -1051,7 +1127,8 @@ main (int argc, char **argv) memset(si, 0, sizeof(*si)); global_si_kludge = si; /* I hate C so much... */ - srandom ((int) time ((time_t *) 0)); +# undef ya_rand_init + ya_rand_init (0); save_argv (argc, argv); set_version_string (si, &argc, argv); @@ -1083,10 +1160,20 @@ main (int argc, char **argv) if (p->verbose_p) analyze_display (si); initialize_server_extensions (si); + + si->blank_time = time ((time_t) 0); /* must be before ..._window */ initialize_screensaver_window (si); + select_events (si); init_sigchld (); + disable_builtin_screensaver (si, True); + sync_server_dpms_settings (si->dpy, p->dpms_enabled_p, + p->dpms_standby / 1000, + p->dpms_suspend / 1000, + p->dpms_off / 1000, + False); + initialize_stderr (si); make_splash_dialog (si); @@ -1099,6 +1186,47 @@ main (int argc, char **argv) /* Processing ClientMessage events. */ + +static Bool error_handler_hit_p = False; + +static int +ignore_all_errors_ehandler (Display *dpy, XErrorEvent *error) +{ + error_handler_hit_p = True; + return 0; +} + +/* Sometimes some systems send us ClientMessage events with bogus atoms in + them. We only look up the atom names for printing warning messages, + so don't bomb out when it happens... + */ +static char * +XGetAtomName_safe (Display *dpy, Atom atom) +{ + char *result; + XErrorHandler old_handler; + if (!atom) return 0; + + XSync (dpy, False); + error_handler_hit_p = False; + old_handler = XSetErrorHandler (ignore_all_errors_ehandler); + result = XGetAtomName (dpy, atom); + XSync (dpy, False); + XSetErrorHandler (old_handler); + XSync (dpy, False); + if (error_handler_hit_p) result = 0; + + if (result) + return result; + else + { + char buf[100]; + sprintf (buf, "<>", (unsigned long) atom); + return strdup (buf); + } +} + + static void clientmessage_response (saver_info *si, Window w, Bool error, const char *stderr_msg, @@ -1107,6 +1235,8 @@ clientmessage_response (saver_info *si, Window w, Bool error, char *proto; int L; saver_preferences *p = &si->prefs; + XErrorHandler old_handler; + if (error || p->verbose_p) fprintf (stderr, "%s: %s\n", blurb(), stderr_msg); @@ -1116,9 +1246,23 @@ clientmessage_response (saver_info *si, Window w, Bool error, strcpy (proto+1, protocol_msg); L++; + /* Ignore all X errors while sending a response to a ClientMessage. + Pretty much the only way we could get an error here is if the + window we're trying to send the reply on has been deleted, in + which case, the sender of the ClientMessage won't see our response + anyway. + */ + XSync (si->dpy, False); + error_handler_hit_p = False; + old_handler = XSetErrorHandler (ignore_all_errors_ehandler); + XChangeProperty (si->dpy, w, XA_SCREENSAVER_RESPONSE, XA_STRING, 8, PropModeReplace, (unsigned char *) proto, L); + + XSync (si->dpy, False); + XSetErrorHandler (old_handler); XSync (si->dpy, False); + free (proto); } @@ -1135,7 +1279,7 @@ handle_clientmessage (saver_info *si, XEvent *event, Bool until_idle_p) if (event->xclient.message_type != XA_SCREENSAVER) { char *str; - str = XGetAtomName (si->dpy, event->xclient.message_type); + str = XGetAtomName_safe (si->dpy, event->xclient.message_type); fprintf (stderr, "%s: unrecognised ClientMessage type %s received\n", blurb(), (str ? str : "(null)")); if (str) XFree (str); @@ -1198,9 +1342,10 @@ handle_clientmessage (saver_info *si, XEvent *event, Bool until_idle_p) return True; } } - clientmessage_response(si, window, True, - "ClientMessage DEACTIVATE received while inactive.", - "not active."); + clientmessage_response(si, window, False, + "ClientMessage DEACTIVATE received while inactive: resetting idle timer.", + "not active: idle timer reset."); + reset_timers (si); } else if (type == XA_CYCLE) { @@ -1482,7 +1627,7 @@ handle_clientmessage (saver_info *si, XEvent *event, Bool until_idle_p) { char buf [1024]; char *str; - str = (type ? XGetAtomName(si->dpy, type) : 0); + str = XGetAtomName_safe (si->dpy, type); if (str) { @@ -1512,18 +1657,79 @@ static void analyze_display (saver_info *si) { int i, j; - static const char *exts[][2] = { - { "SCREEN_SAVER", "SGI Screen-Saver" }, - { "SCREEN-SAVER", "SGI Screen-Saver" }, - { "MIT-SCREEN-SAVER", "MIT Screen-Saver" }, - { "XIDLE", "XIdle" }, - { "SGI-VIDEO-CONTROL", "SGI Video-Control" }, - { "READDISPLAY", "SGI Read-Display" }, - { "MIT-SHM", "Shared Memory" }, - { "DOUBLE-BUFFER", "Double-Buffering" }, - { "DPMS", "Power Management" }, - { "GLX", "GLX" }, - { "XFree86-VidModeExtension", "XF86 Video-Mode" } + static struct { + const char *name; const char *desc; Bool useful_p; + } exts[] = { + + { "SCREEN_SAVER", "SGI Screen-Saver", +# ifdef HAVE_SGI_SAVER_EXTENSION + True +# else + False +# endif + }, { "SCREEN-SAVER", "SGI Screen-Saver", +# ifdef HAVE_SGI_SAVER_EXTENSION + True +# else + False +# endif + }, { "MIT-SCREEN-SAVER", "MIT Screen-Saver", +# ifdef HAVE_MIT_SAVER_EXTENSION + True +# else + False +# endif + }, { "XIDLE", "XIdle", +# ifdef HAVE_XIDLE_EXTENSION + True +# else + False +# endif + }, { "SGI-VIDEO-CONTROL", "SGI Video-Control", +# ifdef HAVE_SGI_VC_EXTENSION + True +# else + False +# endif + }, { "READDISPLAY", "SGI Read-Display", +# ifdef HAVE_READ_DISPLAY_EXTENSION + True +# else + False +# endif + }, { "MIT-SHM", "Shared Memory", +# ifdef HAVE_XSHM_EXTENSION + True +# else + False +# endif + }, { "DOUBLE-BUFFER", "Double-Buffering", +# ifdef HAVE_DOUBLE_BUFFER_EXTENSION + True +# else + False +# endif + }, { "DPMS", "Power Management", +# ifdef HAVE_DPMS_EXTENSION + True +# else + False +# endif + }, { "GLX", "GLX", +# ifdef HAVE_GL + True +# else + False +# endif + }, { "XFree86-VidModeExtension", "XF86 Video-Mode", +# ifdef HAVE_XF86VMODE + True +# else + False +# endif + }, { "XINERAMA", "Xinerama", + True + }, }; fprintf (stderr, "%s: running on display \"%s\"\n", blurb(), @@ -1535,8 +1741,11 @@ analyze_display (saver_info *si) for (i = 0; i < countof(exts); i++) { int op = 0, event = 0, error = 0; - if (XQueryExtension (si->dpy, exts[i][0], &op, &event, &error)) - fprintf (stderr, "%s: %s\n", blurb(), exts[i][1]); + if (XQueryExtension (si->dpy, exts[i].name, &op, &event, &error)) + fprintf (stderr, "%s: %s%s\n", blurb(), + exts[i].desc, + (exts[i].useful_p ? "" : + " \t<== unsupported at compile-time!")); } for (i = 0; i < si->nscreens; i++)