X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=driver%2Fxscreensaver-command.c;h=8ace1506e486b32ef318ec98c9597f65db571915;hb=c6b273ef7292ba10943694df1656b05203d7b62f;hp=46af331fc3858a8bf915995acabb2c7c8f417a9f;hpb=65740e2a8dea3d6309ae6e8914a0fb79e993ada8;p=xscreensaver diff --git a/driver/xscreensaver-command.c b/driver/xscreensaver-command.c old mode 100755 new mode 100644 index 46af331f..8ace1506 --- a/driver/xscreensaver-command.c +++ b/driver/xscreensaver-command.c @@ -1,4 +1,5 @@ -/* xscreensaver-command, Copyright (c) 1991-1994 Jamie Zawinski +/* xscreensaver-command, Copyright (c) 1991-1998 + * by 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 @@ -9,55 +10,52 @@ * implied warranty. */ -#include "version.h" +#define STANDALONE + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + #include +#include + +#ifdef HAVE_UNISTD_H +# include +#endif + +#include /* for CARD32 */ #include #include +#include /* for XGetClassHint() */ #include -#if __STDC__ -# include -#endif + +#include /* only needed to get through xscreensaver.h */ + +#include "version.h" + +#ifdef STANDALONE + static char *progname; + static Atom XA_VROOT; + static Atom XA_SCREENSAVER, XA_SCREENSAVER_VERSION, XA_SCREENSAVER_TIME; +#else /* !STANDALONE */ +# include "xscreensaver.h" +#endif /* !STANDALONE */ + #ifdef _VROOT_H_ ERROR! you must not include vroot.h in this file #endif -static char *screensaver_version; -static char *usage = "usage: %s -\n\ -\n\ - This program provides external control of a running xscreensaver process.\n\ - Version %s, copyright (c) 1991-1994 Jamie Zawinski .\n\ -\n\ - -demo Enter interactive demo mode.\n\ - -deactivate Turns off the screensaver if it is on, as user input would.\n\ - -activate Turns it on as if the user had been idle for long enough.\n\ - -cycle Stops the current hack and runs a new one.\n\ - -next Like either -activate or -cycle, depending on which is more\n\ - appropriate, except that the screenhack that will be run is\n\ - the next one in the list of hacks, instead of a randomly-\n\ - chosen one. This option is good for looking at a demo of\n\ - each of the hacks in place.\n\ - -prev Like -next, but goes in the other direction.\n\ - -exit Causes the screensaver process to exit. It should be ok to\n\ - just kill the process (NOT with -9!) but this is a slightly\n\ - easier way.\n\ - -restart Causes the screensaver process to exit and then restart with\n\ - the same command line arguments. This is a good way of \n\ - causing the screensaver to re-read the resource database.\n\ - -lock Same as -activate, but with immediate locking.\n\ -\n\ - See the man page for more details.\n\n"; - static Window -find_screensaver_window (dpy, progname) - Display *dpy; - char *progname; +find_screensaver_window (Display *dpy, char **version) { int i; Window root = RootWindowOfScreen (DefaultScreenOfDisplay (dpy)); Window root2, parent, *kids; unsigned int nkids; + if (version) *version = 0; + if (! XQueryTree (dpy, root, &root2, &parent, &kids, &nkids)) abort (); if (root != root2) @@ -71,84 +69,271 @@ find_screensaver_window (dpy, progname) Atom type; int format; unsigned long nitems, bytesafter; - char *version; + char *v; if (XGetWindowProperty (dpy, kids[i], - XInternAtom (dpy, "_SCREENSAVER_VERSION", False), - 0, 1, False, XA_STRING, + XA_SCREENSAVER_VERSION, + 0, 200, False, XA_STRING, &type, &format, &nitems, &bytesafter, - (unsigned char **) &version) + (unsigned char **) &v) == Success && type != None) - return kids[i]; + { + if (version) + *version = v; + return kids[i]; + } } - fprintf (stderr, "%s: no screensaver is running on display %s", progname, + fprintf (stderr, "%s: no screensaver is running on display %s\n", progname, DisplayString (dpy)); exit (1); } +void +xscreensaver_command (Display *dpy, Atom command) +{ + char *v = 0; + Window window = find_screensaver_window (dpy, &v); + + if (command == XA_SCREENSAVER_TIME || + command == XA_SCREENSAVER_VERSION) + { + XClassHint hint; + memset (&hint, 0, sizeof(hint)); + if (!v || !*v) + { + fprintf (stderr, "%s: version property not set on window 0x%x?\n", + progname, (unsigned int) window); + exit (1); + } + + XGetClassHint(dpy, window, &hint); + if (!hint.res_class) + { + fprintf (stderr, "%s: class hints not set on window 0x%x?\n", + progname, (unsigned int) window); + exit (1); + } + + fprintf (stdout, "%s %s", hint.res_class, v); + + if (command != XA_SCREENSAVER_TIME) + { + fprintf (stdout, "\n"); + } + else + { + Atom type; + int format; + unsigned long nitems, bytesafter; + unsigned char *data = 0; + XWindowAttributes xgwa; + Bool active_p = False; + + xgwa.map_state = IsViewable; + XGetWindowAttributes (dpy, window, &xgwa); + + if (XGetWindowProperty (dpy, window, XA_VROOT, + 0, 0, False, XA_WINDOW, + &type, &format, &nitems, &bytesafter, + &data) + == Success + && type != None) + active_p = True; + + if (data) free (data); + data = 0; + + if (XGetWindowProperty (dpy, window, + XA_SCREENSAVER_TIME, + 0, 1, False, XA_INTEGER, + &type, &format, &nitems, &bytesafter, + &data) + == Success + && type == XA_INTEGER + && data) + { + CARD32 time32 = *((CARD32 *)data); + time_t tt = (time_t) time32; + + if (active_p) + fprintf (stdout, ": screen blanked since "); + else + /* suggestions for a better way to phrase this are welcome. */ + fprintf (stdout, ": screen non-blanked since "); + fprintf (stdout, "%s", ctime(&tt)); + if (data) free (data); + } + else + { + if (data) free (data); + fprintf (stdout, "\n"); + fflush (stdout); + fprintf (stderr, "%s: no time on window 0x%x (%s %s).\n", + progname, (unsigned int) window, + hint.res_class, (v ? v : "???")); + exit (1); + } + } + } + else + { + XEvent event; + event.xany.type = ClientMessage; + event.xclient.display = dpy; + event.xclient.window = window; + event.xclient.message_type = XA_SCREENSAVER; + event.xclient.format = 32; + event.xclient.data.l[0] = (long) command; + if (! XSendEvent (dpy, window, False, 0L, &event)) + { + fprintf (stderr, "%s: XSendEvent(dpy, 0x%x ...) failed.\n", + progname, (unsigned int) window); + exit (1); + } + } + XSync (dpy, 0); +} + + + +#ifdef STANDALONE +static Atom XA_ACTIVATE, XA_DEACTIVATE, XA_CYCLE, XA_NEXT, XA_PREV; +static Atom XA_EXIT, XA_RESTART, XA_DEMO, XA_LOCK; + +static char *progname; +static char *screensaver_version; +static char *usage = "\n\ +usage: %s -\n\ +\n\ + This program provides external control of a running xscreensaver process.\n\ + Version %s, copyright (c) 1991-1997 Jamie Zawinski .\n\ +\n\ + The xscreensaver program is a daemon that runs in the background.\n\ + You control a running xscreensaver process by sending it messages\n\ + with this program, xscreensaver-command. See the man pages for\n\ + details. These are the arguments understood by xscreensaver-command:\n\ +\n\ + -demo Ask the xscreensaver process to enter interactive demo mode.\n\ +\n\ + -activate Turn on the screensaver (blank the screen), as if the user\n\ + had been idle for long enough.\n\ +\n\ + -deactivate Turns off the screensaver (un-blank the screen), as if user\n\ + activity had been detected.\n\ +\n\ + -cycle If the screensaver is active (the screen is blanked), then\n\ + stop the current graphics demo and run a new one (chosen\n\ + randomly.)\n\ +\n\ + -next Like either -activate or -cycle, depending on which is more\n\ + appropriate, except that the graphics hack that will be run\n\ + is the next one in the list, instead of a randomly-chosen\n\ + one. In other words, repeatedly executing -next will cause\n\ + the xscreensaver process to invoke each graphics demo\n\ + sequentially. (Though using the -demo option is probably\n\ + an easier way to accomplish that.)\n\ +\n\ + -prev Like -next, but goes in the other direction.\n\ +\n\ + -exit Causes the xscreensaver process to exit gracefully. This is\n\ + roughly the same as killing the process with `kill', but it\n\ + is easier, since you don't need to first figure out the pid.\n\ + (Note that one must *never* kill xscreensaver with -9!)\n\ +\n\ + -restart Causes the screensaver process to exit and then restart with\n\ + the same command line arguments as last time. Do this after\n\ + you've changed your X resource settings, to cause\n\ + xscreensaver to notice the changes.\n\ +\n\ + -lock Tells the running xscreensaver process to lock the screen\n\ + immediately. This is like -activate, but forces locking as\n\ + well, even if locking is not the default.\n\ +\n\ + -version Prints the version of xscreensaver that is currently running\n\ + on the display -- that is, the actual version number of the\n\ + running xscreensaver background process, rather than the\n\ + version number of xscreensaver-command.\n\ +\n\ + -time Prints the time at which the screensaver last activated or\n\ + deactivated (roughly, how long the user has been idle or\n\ + non-idle -- but not quite, since it only tells you when the\n\ + screen became blanked or un-blanked.)\n\ +\n\ + See the man page for more details.\n\ + For updates, check http://people.netscape.com/jwz/xscreensaver/\n\ +\n"; + #define USAGE() \ - { fprintf (stderr, usage, argv[0], screensaver_version); exit (1); } + { fprintf (stderr, usage, progname, screensaver_version); exit (1); } -#ifndef VMS -void -#else int -#endif -main (argc, argv) - int argc; - char **argv; +main (int argc, char **argv) { Display *dpy; - Window window; - XEvent event; int i; - char *message = 0, *dpyname = 0; + char *dpyname = 0; + Atom *cmd = 0; + + progname = argv[0]; screensaver_version = (char *) malloc (5); memcpy (screensaver_version, screensaver_id + 17, 4); screensaver_version [4] = 0; + for (i = 1; i < argc; i++) { - char *s = argv [i]; - int L = strlen (s); + const char *s = argv [i]; + int L; + if (s[0] == '-' && s[1] == '-') s++; + L = strlen (s); if (L < 2) USAGE (); if (!strncmp (s, "-display", L)) dpyname = argv [++i]; - else if (message) USAGE () - else if (!strncmp (s, "-activate", L)) message = "ACTIVATE"; - else if (!strncmp (s, "-deactivate", L)) message = "DEACTIVATE"; - else if (!strncmp (s, "-cycle", L)) message = "CYCLE"; - else if (!strncmp (s, "-next", L)) message = "NEXT"; - else if (!strncmp (s, "-prev", L)) message = "PREV"; - else if (!strncmp (s, "-exit", L)) message = "EXIT"; - else if (!strncmp (s, "-restart", L)) message = "RESTART"; - else if (!strncmp (s, "-demo", L)) message = "DEMO"; - else if (!strncmp (s, "-lock", L)) message = "LOCK"; + else if (cmd) USAGE () + else if (!strncmp (s, "-activate", L)) cmd = &XA_ACTIVATE; + else if (!strncmp (s, "-deactivate", L)) cmd = &XA_DEACTIVATE; + else if (!strncmp (s, "-cycle", L)) cmd = &XA_CYCLE; + else if (!strncmp (s, "-next", L)) cmd = &XA_NEXT; + else if (!strncmp (s, "-prev", L)) cmd = &XA_PREV; + else if (!strncmp (s, "-exit", L)) cmd = &XA_EXIT; + else if (!strncmp (s, "-restart", L)) cmd = &XA_RESTART; + else if (!strncmp (s, "-demo", L)) cmd = &XA_DEMO; + else if (!strncmp (s, "-lock", L)) cmd = &XA_LOCK; + else if (!strncmp (s, "-version", L)) cmd = &XA_SCREENSAVER_VERSION; + else if (!strncmp (s, "-time", L)) cmd = &XA_SCREENSAVER_TIME; else USAGE (); } - if (! message) USAGE (); + if (!cmd) + USAGE (); + if (!dpyname) dpyname = (char *) getenv ("DISPLAY"); dpy = XOpenDisplay (dpyname); if (!dpy) { - fprintf (stderr, "%s: can't open display %s\n", argv[0], + fprintf (stderr, "%s: can't open display %s\n", progname, (dpyname ? dpyname : "(null)")); exit (1); } - window = find_screensaver_window (dpy, argv[0]); - - event.xany.type = ClientMessage; - event.xclient.display = dpy; - event.xclient.window = window; - event.xclient.message_type = XInternAtom (dpy, "SCREENSAVER", False); - event.xclient.format = 32; - event.xclient.data.l[0] = (long) XInternAtom (dpy, message, False); - if (! XSendEvent (dpy, window, False, 0L, &event)) - { - fprintf (stderr, "%s: XSendEvent(dpy, 0x%x ...) failed.\n", argv [0], - (unsigned int) window); - exit (1); - } - XSync (dpy, 0); + + XA_VROOT = XInternAtom (dpy, "__SWM_VROOT", False); + XA_SCREENSAVER = XInternAtom (dpy, "SCREENSAVER", False); + XA_SCREENSAVER_VERSION = XInternAtom (dpy, "_SCREENSAVER_VERSION",False); + XA_SCREENSAVER_TIME = XInternAtom (dpy, "_SCREENSAVER_TIME", False); + XA_ACTIVATE = XInternAtom (dpy, "ACTIVATE", False); + XA_DEACTIVATE = XInternAtom (dpy, "DEACTIVATE", False); + XA_RESTART = XInternAtom (dpy, "RESTART", False); + XA_CYCLE = XInternAtom (dpy, "CYCLE", False); + XA_NEXT = XInternAtom (dpy, "NEXT", False); + XA_PREV = XInternAtom (dpy, "PREV", False); + XA_EXIT = XInternAtom (dpy, "EXIT", False); + XA_DEMO = XInternAtom (dpy, "DEMO", False); + XA_LOCK = XInternAtom (dpy, "LOCK", False); + + xscreensaver_command(dpy, *cmd); + + fflush (stdout); + fflush (stderr); exit (0); } + +#endif /* STANDALONE */