1 /* xscreensaver, Copyright (c) 1992-2010 Jamie Zawinski <jwz@jwz.org>
3 * Permission to use, copy, modify, distribute, and sell this software and its
4 * documentation for any purpose is hereby granted without fee, provided that
5 * the above copyright notice appear in all copies and that both that
6 * copyright notice and this permission notice appear in supporting
7 * documentation. No representations are made about the suitability of this
8 * software for any purpose. It is provided "as is" without express or
11 * And remember: X Windows is to graphics hacking as roman numerals are to
12 * the square root of pi.
15 /* This file contains simple code to open a window or draw on the root.
16 The idea being that, when writing a graphics hack, you can just link
17 with this .o to get all of the uninteresting junk out of the way.
19 Create a few static global procedures and variables:
21 static void *YOURNAME_init (Display *, Window);
23 Return an opaque structure representing your drawing state.
25 static unsigned long YOURNAME_draw (Display *, Window, void *closure);
28 The `closure' arg is your drawing state, that you created in `init'.
29 Return the number of microseconds to wait until the next frame.
31 This should return in some small fraction of a second.
32 Do not call `usleep' or loop excessively. For long loops, use a
35 static void YOURNAME_reshape (Display *, Window, void *closure,
36 unsigned int width, unsigned int height);
38 Called when the size of the window changes with the new size.
40 static Bool YOURNAME_event (Display *, Window, void *closure,
43 Called when a keyboard or mouse event arrives.
44 Return True if you handle it in some way, False otherwise.
46 static void YOURNAME_free (Display *, Window, void *closure);
48 Called when you are done: free everything you've allocated,
49 including your private `state' structure.
51 NOTE: this is called in windowed-mode when the user typed
52 'q' or clicks on the window's close box; but when
53 xscreensaver terminates this screenhack, it does so by
54 killing the process with SIGSTOP. So this callback is
57 static char YOURNAME_defaults [] = { "...", "...", ... , 0 };
59 This variable is an array of strings, your default resources.
60 Null-terminate the list.
62 static XrmOptionDescRec YOURNAME_options[] = { { ... }, ... { 0,0,0,0 } }
64 This variable describes your command-line options.
65 Null-terminate the list.
67 Finally , invoke the XSCREENSAVER_MODULE() macro to tie it all together.
71 - Make sure that all functions in your module are static (check this
72 by running "nm -g" on the .o file).
74 - Do not use global variables: all such info must be stored in the
75 private `state' structure.
77 - Do not use static function-local variables, either. Put it in `state'.
79 Assume that there are N independent runs of this code going in the
80 same address space at the same time: they must not affect each other.
82 - Don't forget to write an XML file to describe the user interface
83 of your screen saver module. See .../hacks/config/README for details.
89 #include <X11/Intrinsic.h>
90 #include <X11/IntrinsicP.h>
91 #include <X11/CoreP.h>
92 #include <X11/Shell.h>
93 #include <X11/StringDefs.h>
94 #include <X11/keysym.h>
95 /* #include <libosso.h> */
96 #include <dbus/dbus.h>
97 /* #include <dbus/dbus-glib.h> */
100 # include <X11/SGIScheme.h> /* for SgiUseSchemes() */
105 # include <X11/Xmu/Error.h>
107 # include <Xmu/Error.h>
113 #include "screenhackI.h"
118 #ifndef _XSCREENSAVER_VROOT_H_
119 # error Error! You have an old version of vroot.h! Check -I args.
120 #endif /* _XSCREENSAVER_VROOT_H_ */
123 # define isupper(c) ((c) >= 'A' && (c) <= 'Z')
126 # define _tolower(c) ((c) - 'A' + 'a')
130 /* This is defined by the SCREENHACK_MAIN() macro via screenhack.h.
132 extern struct xscreensaver_function_table *xscreensaver_function_table;
135 const char *progname; /* used by hacks in error messages */
136 const char *progclass; /* used by ../utils/resources.c */
137 Bool mono_p; /* used by hacks */
140 static XrmOptionDescRec default_options [] = {
141 { "-root", ".root", XrmoptionNoArg, "True" },
142 { "-window", ".root", XrmoptionNoArg, "False" },
143 { "-mono", ".mono", XrmoptionNoArg, "True" },
144 { "-install", ".installColormap", XrmoptionNoArg, "True" },
145 { "-noinstall",".installColormap", XrmoptionNoArg, "False" },
146 { "-visual", ".visualID", XrmoptionSepArg, 0 },
147 { "-window-id", ".windowID", XrmoptionSepArg, 0 },
148 { "-fps", ".doFPS", XrmoptionNoArg, "True" },
149 { "-no-fps", ".doFPS", XrmoptionNoArg, "False" },
150 { "-view", ".view", XrmoptionSepArg, 1 },
153 { "-pair", ".pair", XrmoptionNoArg, "True" },
154 # endif /* DEBUG_PAIR */
158 static char *default_defaults[] = {
160 "*geometry: 600x480", /* this should be .geometry, but nooooo... */
162 "*installColormap: false",
164 "*visualID: default",
166 "*desktopGrabber: xscreensaver-getimage %s",
170 static XrmOptionDescRec *merged_options;
171 static int merged_options_size;
172 static char **merged_defaults;
178 struct xscreensaver_function_table *ft = xscreensaver_function_table;
180 const XrmOptionDescRec *options = ft->options;
181 const char * const *defaults = ft->defaults;
182 const char *progclass = ft->progclass;
184 int def_opts_size, opts_size;
185 int def_defaults_size, defaults_size;
187 for (def_opts_size = 0; default_options[def_opts_size].option;
190 for (opts_size = 0; options[opts_size].option; opts_size++)
193 merged_options_size = def_opts_size + opts_size;
194 merged_options = (XrmOptionDescRec *)
195 malloc ((merged_options_size + 1) * sizeof(*default_options));
196 memcpy (merged_options, default_options,
197 (def_opts_size * sizeof(*default_options)));
198 memcpy (merged_options + def_opts_size, options,
199 ((opts_size + 1) * sizeof(*default_options)));
201 for (def_defaults_size = 0; default_defaults[def_defaults_size];
204 for (defaults_size = 0; defaults[defaults_size]; defaults_size++)
206 merged_defaults = (char **)
207 malloc ((def_defaults_size + defaults_size + 1) * sizeof (*defaults));;
208 memcpy (merged_defaults, default_defaults,
209 def_defaults_size * sizeof(*defaults));
210 memcpy (merged_defaults + def_defaults_size, defaults,
211 (defaults_size + 1) * sizeof(*defaults));
213 /* This totally sucks. Xt should behave like this by default.
214 If the string in `defaults' looks like ".foo", change that
219 for (s = merged_defaults; *s; s++)
222 const char *oldr = *s;
223 char *newr = (char *) malloc(strlen(oldr) + strlen(progclass) + 3);
224 strcpy (newr, progclass);
234 /* Make the X errors print out the name of this program, so we have some
235 clue which one has a bug when they die under the screensaver.
239 screenhack_ehandler (Display *dpy, XErrorEvent *error)
241 fprintf (stderr, "\nX error in %s:\n", progname);
242 if (XmuPrintDefaultErrorMessage (dpy, error, stderr))
245 fprintf (stderr, " (nonfatal.)\n");
250 MapNotify_event_p (Display *dpy, XEvent *event, XPointer window)
252 return (event->xany.type == MapNotify &&
253 event->xvisibility.window == (Window) window);
257 static Atom XA_WM_PROTOCOLS, XA_WM_DELETE_WINDOW;
259 /* Dead-trivial event handling: exits if "q" or "ESC" are typed.
260 Exit if the WM_PROTOCOLS WM_DELETE_WINDOW ClientMessage is received.
261 Returns False if the screen saver should now terminate.
264 screenhack_handle_event_1 (Display *dpy, XEvent *event)
266 switch (event->xany.type)
272 XLookupString (&event->xkey, &c, 1, &keysym, 0);
277 return False; /* exit */
278 else if (! (keysym >= XK_Shift_L && keysym <= XK_Hyper_R))
279 XBell (dpy, 0); /* beep for non-chord keys */
287 if (event->xclient.message_type != XA_WM_PROTOCOLS)
289 char *s = XGetAtomName(dpy, event->xclient.message_type);
290 if (!s) s = "(null)";
291 fprintf (stderr, "%s: unknown ClientMessage %s received!\n",
294 else if (event->xclient.data.l[0] != XA_WM_DELETE_WINDOW)
296 char *s1 = XGetAtomName(dpy, event->xclient.message_type);
297 char *s2 = XGetAtomName(dpy, event->xclient.data.l[0]);
298 if (!s1) s1 = "(null)";
299 if (!s2) s2 = "(null)";
300 fprintf (stderr, "%s: unknown ClientMessage %s[%s] received!\n",
305 return False; /* exit */
315 pick_visual (Screen *screen)
317 struct xscreensaver_function_table *ft = xscreensaver_function_table;
319 if (ft->pick_visual_hook)
321 Visual *v = ft->pick_visual_hook (screen);
325 return get_visual_resource (screen, "visualID", "VisualID", False);
329 /* Notice when the user has requested a different visual or colormap
330 on a pre-existing window (e.g., "-root -visual truecolor" or
331 "-window-id 0x2c00001 -install") and complain, since when drawing
332 on an existing window, we have no choice about these things.
335 visual_warning (Screen *screen, Window window, Visual *visual, Colormap cmap,
338 struct xscreensaver_function_table *ft = xscreensaver_function_table;
340 char *visual_string = get_string_resource (DisplayOfScreen (screen),
341 "visualID", "VisualID");
342 Visual *desired_visual = pick_visual (screen);
346 if (window == RootWindowOfScreen (screen))
347 strcpy (win, "root window");
349 sprintf (win, "window 0x%lx", (unsigned long) window);
352 sprintf (why, "-window-id 0x%lx", (unsigned long) window);
354 strcpy (why, "-root");
356 if (visual_string && *visual_string)
359 for (s = visual_string; *s; s++)
360 if (isupper (*s)) *s = _tolower (*s);
362 if (!strcmp (visual_string, "default") ||
363 !strcmp (visual_string, "default") ||
364 !strcmp (visual_string, "best"))
365 /* don't warn about these, just silently DWIM. */
367 else if (visual != desired_visual)
369 fprintf (stderr, "%s: ignoring `-visual %s' because of `%s'.\n",
370 progname, visual_string, why);
371 fprintf (stderr, "%s: using %s's visual 0x%lx.\n",
372 progname, win, XVisualIDFromVisual (visual));
374 free (visual_string);
377 if (visual == DefaultVisualOfScreen (screen) &&
378 has_writable_cells (screen, visual) &&
379 get_boolean_resource (DisplayOfScreen (screen),
380 "installColormap", "InstallColormap"))
382 fprintf (stderr, "%s: ignoring `-install' because of `%s'.\n",
384 fprintf (stderr, "%s: using %s's colormap 0x%lx.\n",
385 progname, win, (unsigned long) cmap);
388 if (ft->validate_visual_hook)
390 if (! ft->validate_visual_hook (screen, win, visual))
399 /* Bad Things Happen if stdin, stdout, and stderr have been closed
400 (as by the `sh incantation "attraction >&- 2>&-"). When you do
401 that, the X connection gets allocated to one of these fds, and
402 then some random library writes to stderr, and random bits get
403 stuffed down the X pipe, causing "Xlib: sequence lost" errors.
404 So, we cause the first three file descriptors to be open to
405 /dev/null if they aren't open to something else already. This
406 must be done before any other files are opened (or the closing
407 of that other file will again free up one of the "magic" first
410 We do this by opening /dev/null three times, and then closing
411 those fds, *unless* any of them got allocated as #0, #1, or #2,
412 in which case we leave them open. Gag.
414 Really, this crap is technically required of *every* X program,
415 if you want it to be robust in the face of "2>&-".
417 int fd0 = open ("/dev/null", O_RDWR);
418 int fd1 = open ("/dev/null", O_RDWR);
419 int fd2 = open ("/dev/null", O_RDWR);
420 if (fd0 > 2) close (fd0);
421 if (fd1 > 2) close (fd1);
422 if (fd2 > 2) close (fd2);
427 screenhack_table_handle_events (Display *dpy,
428 const struct xscreensaver_function_table *ft,
429 Window window, void *closure
431 , Window window2, void *closure2
435 XtAppContext app = XtDisplayToApplicationContext (dpy);
437 if (XtAppPending (app) & (XtIMTimer|XtIMAlternateInput))
438 XtAppProcessEvent (app, XtIMTimer|XtIMAlternateInput);
440 while (XPending (dpy))
443 XNextEvent (dpy, &event);
445 if (event.xany.type == ConfigureNotify)
447 if (event.xany.window == window)
448 ft->reshape_cb (dpy, window, closure,
449 event.xconfigure.width, event.xconfigure.height);
451 if (event.xany.window == window2)
452 ft->reshape_cb (dpy, window2, closure2,
453 event.xconfigure.width, event.xconfigure.height);
456 else if (event.xany.type == ClientMessage ||
457 (! (event.xany.window == window
458 ? ft->event_cb (dpy, window, closure, &event)
460 : event.xany.window == window2
461 ? ft->event_cb (dpy, window2, closure2, &event)
464 if (! screenhack_handle_event_1 (dpy, &event))
467 if (XtAppPending (app) & (XtIMTimer|XtIMAlternateInput))
468 XtAppProcessEvent (app, XtIMTimer|XtIMAlternateInput);
475 usleep_and_process_events (Display *dpy,
476 const struct xscreensaver_function_table *ft,
477 Window window, fps_state *fpst, void *closure,
480 , Window window2, fps_state *fpst2, void *closure2,
486 unsigned long quantum = 100000; /* 1/10th second */
495 if (fpst) fps_slept (fpst, quantum);
497 if (fpst2) fps_slept (fpst2, quantum);
501 if (! screenhack_table_handle_events (dpy, ft, window, closure
514 screenhack_do_fps (Display *dpy, Window w, fps_state *fpst, void *closure)
516 fps_compute (fpst, 0);
522 run_screenhack_table (Display *dpy,
527 const struct xscreensaver_function_table *ft,
530 #define LIVEWP_SIGNAL_INTERFACE "org.maemo.livewp"
531 #define LIVEWP_PAUSE_LIVEBG_ON_VIEW1 "pause_livebg_on_view1"
532 #define LIVEWP_PAUSE_LIVEBG_ON_VIEW2 "pause_livebg_on_view2"
533 #define LIVEWP_PAUSE_LIVEBG_ON_VIEW3 "pause_livebg_on_view3"
534 #define LIVEWP_PAUSE_LIVEBG_ON_VIEW4 "pause_livebg_on_view4"
535 #define LIVEWP_PAUSE_LIVEBG_ON_VIEW "pause_livebg_on_view"
536 #define LIVEWP_PLAY_LIVEBG_ON_VIEW1 "play_livebg_on_view1"
537 #define LIVEWP_PLAY_LIVEBG_ON_VIEW2 "play_livebg_on_view2"
538 #define LIVEWP_PLAY_LIVEBG_ON_VIEW3 "play_livebg_on_view3"
539 #define LIVEWP_PLAY_LIVEBG_ON_VIEW4 "play_livebg_on_view4"
540 #define LIVEWP_PLAY_LIVEBG_ON_VIEW "play_livebg_on_view"
542 DBusConnection* conn;
548 /* Kludge: even though the init_cb functions are declared to take 2 args,
549 actually call them with 3, for the benefit of xlockmore_init() and
552 void *(*init_cb) (Display *, Window, void *) =
553 (void *(*) (Display *, Window, void *)) ft->init_cb;
555 void (*fps_cb) (Display *, Window, fps_state *, void *) = ft->fps_cb;
557 void *closure = init_cb (dpy, window, ft->setup_arg);
558 fps_state *fpst = fps_init (dpy, window);
562 fps_state *fpst2 = 0;
563 if (window2) closure2 = init_cb (dpy, window2, ft->setup_arg);
564 if (window2) fpst2 = fps_init (dpy, window2);
567 if (! closure) /* if it returns nothing, it can't possibly be re-entrant. */
570 if (! fps_cb) fps_cb = screenhack_do_fps;
572 /* initialise the error */
573 dbus_error_init(&err);
574 conn = dbus_bus_get(DBUS_BUS_SESSION, &err);
575 if (dbus_error_is_set(&err)) {
576 fprintf(stderr, "Connection Error (%s)\n", err.message);
577 dbus_error_free(&err);
580 fprintf(stderr, "Connection Null\n");
584 dbus_bus_add_match (conn, "type='signal', interface='org.maemo.livewp'", &err);
585 if (dbus_error_is_set(&err)){
586 fprintf(stderr,"dbus_bus_add_match failed: %s", err.message);
587 dbus_error_free(&err);
590 DBusMessageIter args;
594 unsigned long delay = ft->draw_cb (dpy, window, closure);
596 unsigned long delay2 = 0;
597 if (window2) delay2 = ft->draw_cb (dpy, window2, closure2);
601 if (fpst) fps_cb (dpy, window, fpst, closure);
603 if (fpst2) fps_cb (dpy, window, fpst2, closure);
605 if (! usleep_and_process_events (dpy, ft,
606 window, fpst, closure, delay
608 , window2, fpst2, closure2, delay2
614 /* non blocking read of the next available message */
615 dbus_connection_read_write(conn, 0);
616 msg = dbus_connection_pop_message(conn);
620 if (dbus_message_is_signal(msg, LIVEWP_SIGNAL_INTERFACE, LIVEWP_PAUSE_LIVEBG_ON_VIEW) ||
621 dbus_message_is_signal(msg, LIVEWP_SIGNAL_INTERFACE, LIVEWP_PLAY_LIVEBG_ON_VIEW)){
622 if (!dbus_message_iter_init(msg, &args))
623 fprintf(stderr, "dbus message has no param\n");
624 else if (DBUS_TYPE_INT32 != dbus_message_iter_get_arg_type(&args))
625 fprintf(stderr, "dbus message param is not int \n");
627 dbus_message_iter_get_basic(&args, ¶m);
628 fprintf(stderr, "dbus param = %i\n", param);
631 if (dbus_message_is_signal(msg, LIVEWP_SIGNAL_INTERFACE, LIVEWP_PAUSE_LIVEBG_ON_VIEW)){
632 fprintf(stderr, "dbus Pause scene visible %i\n", param);
635 if (dbus_message_is_signal(msg, LIVEWP_SIGNAL_INTERFACE, LIVEWP_PLAY_LIVEBG_ON_VIEW)){
636 fprintf(stderr, "dbus Play scene visible %i\n", param);
641 /* check this is a method call for the right interface & method */
643 if ((view == 1 && dbus_message_is_signal(msg, LIVEWP_SIGNAL_INTERFACE, LIVEWP_PAUSE_LIVEBG_ON_VIEW1))||
644 (view == 2 && dbus_message_is_signal(msg, LIVEWP_SIGNAL_INTERFACE, LIVEWP_PAUSE_LIVEBG_ON_VIEW2))||
645 (view == 3 && dbus_message_is_signal(msg, LIVEWP_SIGNAL_INTERFACE, LIVEWP_PAUSE_LIVEBG_ON_VIEW3))||
646 (view == 4 && dbus_message_is_signal(msg, LIVEWP_SIGNAL_INTERFACE, LIVEWP_PAUSE_LIVEBG_ON_VIEW4))){
647 fprintf(stderr, "Pause scene visible %i\n", view);
651 if ((view == 1 && dbus_message_is_signal(msg, LIVEWP_SIGNAL_INTERFACE, LIVEWP_PLAY_LIVEBG_ON_VIEW1))||
652 (view == 2 && dbus_message_is_signal(msg, LIVEWP_SIGNAL_INTERFACE, LIVEWP_PLAY_LIVEBG_ON_VIEW2))||
653 (view == 3 && dbus_message_is_signal(msg, LIVEWP_SIGNAL_INTERFACE, LIVEWP_PLAY_LIVEBG_ON_VIEW3))||
654 (view == 4 && dbus_message_is_signal(msg, LIVEWP_SIGNAL_INTERFACE, LIVEWP_PLAY_LIVEBG_ON_VIEW4))){
655 fprintf(stderr, "Play scene visible %i\n", view);
662 ft->free_cb (dpy, window, closure);
663 if (fpst) fps_free (fpst);
666 if (window2) ft->free_cb (dpy, window2, closure2);
667 if (window2) fps_free (fpst2);
669 /* close the connection */
670 dbus_connection_close(conn);
675 make_shell (Screen *screen, Widget toplevel, int width, int height)
677 Display *dpy = DisplayOfScreen (screen);
678 Visual *visual = pick_visual (screen);
679 Boolean def_visual_p = (toplevel &&
680 visual == DefaultVisualOfScreen (screen));
682 if (width <= 0) width = 600;
683 if (height <= 0) height = 480;
688 XtVaSetValues (toplevel,
689 XtNmappedWhenManaged, False,
692 XtNinput, True, /* for WM_HINTS */
694 XtRealizeWidget (toplevel);
695 window = XtWindow (toplevel);
697 if (get_boolean_resource (dpy, "installColormap", "InstallColormap"))
700 XCreateColormap (dpy, window, DefaultVisualOfScreen (screen),
702 XSetWindowColormap (dpy, window, cmap);
709 Colormap cmap = XCreateColormap (dpy, VirtualRootWindowOfScreen(screen),
711 bg = get_pixel_resource (dpy, cmap, "background", "Background");
712 bd = get_pixel_resource (dpy, cmap, "borderColor", "Foreground");
714 new = XtVaAppCreateShell (progname, progclass,
715 topLevelShellWidgetClass, dpy,
716 XtNmappedWhenManaged, False,
718 XtNdepth, visual_depth (screen, visual),
722 XtNbackground, (Pixel) bg,
723 XtNborderColor, (Pixel) bd,
724 XtNinput, True, /* for WM_HINTS */
727 if (!toplevel) /* kludge for the second window in -pair mode... */
728 XtVaSetValues (new, XtNx, 0, XtNy, 550, NULL);
730 XtRealizeWidget (new);
738 init_window (Display *dpy, Widget toplevel, const char *title)
741 XWindowAttributes xgwa;
742 XtPopup (toplevel, XtGrabNone);
743 XtVaSetValues (toplevel, XtNtitle, title, NULL);
745 /* Select KeyPress, and announce that we accept WM_DELETE_WINDOW.
747 window = XtWindow (toplevel);
748 XGetWindowAttributes (dpy, window, &xgwa);
749 XSelectInput (dpy, window,
750 (xgwa.your_event_mask | KeyPressMask | KeyReleaseMask |
751 ButtonPressMask | ButtonReleaseMask));
752 XChangeProperty (dpy, window, XA_WM_PROTOCOLS, XA_ATOM, 32,
754 (unsigned char *) &XA_WM_DELETE_WINDOW, 1);
759 main (int argc, char **argv)
761 struct xscreensaver_function_table *ft = xscreensaver_function_table;
763 /* osso_context_t *osso; */
765 XWindowAttributes xgwa;
771 Widget toplevel2 = 0;
775 Window on_window = 0;
783 progname = argv[0]; /* reset later */
784 progclass = ft->progclass;
787 ft->setup_cb (ft, ft->setup_arg);
792 /* We have to do this on SGI to prevent the background color from being
793 overridden by the current desktop color scheme (we'd like our backgrounds
794 to be black, thanks.) This should be the same as setting the
795 "*useSchemes: none" resource, but it's not -- if that resource is
796 present in the `default_defaults' above, it doesn't work, though it
797 does work when passed as an -xrm arg on the command line. So screw it,
798 turn them off from C instead.
800 SgiUseSchemes ("none");
803 toplevel = XtAppInitialize (&app, progclass, merged_options,
804 merged_options_size, &argc, argv,
805 merged_defaults, 0, 0);
807 dpy = XtDisplay (toplevel);
809 XtGetApplicationNameAndClass (dpy,
811 (char **) &progclass);
813 /* half-assed way of avoiding buffer-overrun attacks. */
814 if (strlen (progname) >= 100) ((char *) progname)[100] = 0;
816 XSetErrorHandler (screenhack_ehandler);
818 XA_WM_PROTOCOLS = XInternAtom (dpy, "WM_PROTOCOLS", False);
819 XA_WM_DELETE_WINDOW = XInternAtom (dpy, "WM_DELETE_WINDOW", False);
822 char *v = (char *) strdup(strchr(screensaver_id, ' '));
823 char *s1, *s2, *s3, *s4;
824 s1 = (char *) strchr(v, ' '); s1++;
825 s2 = (char *) strchr(s1, ' ');
826 s3 = (char *) strchr(v, '('); s3++;
827 s4 = (char *) strchr(s3, ')');
830 sprintf (version, "%s: from the XScreenSaver %s distribution (%s.)",
841 Bool help_p = (!strcmp(argv[1], "-help") ||
842 !strcmp(argv[1], "--help"));
843 fprintf (stderr, "%s\n", version);
844 for (s = progclass; *s; s++) fprintf(stderr, " ");
845 fprintf (stderr, " http://www.jwz.org/xscreensaver/\n\n");
848 fprintf(stderr, "Unrecognised option: %s\n", argv[1]);
849 fprintf (stderr, "Options include: ");
850 for (i = 0; i < merged_options_size; i++)
852 char *sw = merged_options [i].option;
853 Bool argp = (merged_options [i].argKind == XrmoptionSepArg);
854 int size = strlen (sw) + (argp ? 6 : 0) + 2;
857 fprintf (stderr, "\n\t\t ");
861 fprintf (stderr, "%s", sw);
862 if (argp) fprintf (stderr, " <arg>");
863 if (i != merged_options_size - 1) fprintf (stderr, ", ");
866 fprintf (stderr, ".\n");
871 fprintf (stderr, "\nResources:\n\n");
872 for (i = 0; i < merged_options_size; i++)
874 const char *opt = merged_options [i].option;
875 const char *res = merged_options [i].specifier + 1;
876 const char *val = merged_options [i].value;
877 char *s = get_string_resource (dpy, (char *) res, (char *) res);
882 while (L > 0 && (s[L-1] == ' ' || s[L-1] == '\t'))
886 fprintf (stderr, " %-16s %-18s ", opt, res);
887 if (merged_options [i].argKind == XrmoptionSepArg)
889 fprintf (stderr, "[%s]", (s ? s : "?"));
893 fprintf (stderr, "%s", (val ? val : "(null)"));
894 if (val && s && !strcasecmp (val, s))
895 fprintf (stderr, " [default]");
897 fprintf (stderr, "\n");
899 fprintf (stderr, "\n");
903 exit (help_p ? 0 : 1);
908 for (s = merged_defaults; *s; s++)
912 free (merged_options);
913 free (merged_defaults);
917 dont_clear = get_boolean_resource (dpy, "dontClearRoot", "Boolean");
918 mono_p = get_boolean_resource (dpy, "mono", "Boolean");
919 if (CellsOfScreen (DefaultScreenOfDisplay (dpy)) <= 2)
922 root_p = get_boolean_resource (dpy, "root", "Boolean");
925 char *s = get_string_resource (dpy, "windowID", "WindowID");
927 on_window = get_integer_resource (dpy, "windowID", "WindowID");
931 view = get_integer_resource (dpy, "view", "view");
932 fprintf(stderr, "View %i\n", view);
935 window = (Window) on_window;
936 XtDestroyWidget (toplevel);
937 XGetWindowAttributes (dpy, window, &xgwa);
938 visual_warning (xgwa.screen, window, xgwa.visual, xgwa.colormap, True);
940 /* Select KeyPress and resize events on the external window.
942 xgwa.your_event_mask |= KeyPressMask | StructureNotifyMask;
943 XSelectInput (dpy, window, xgwa.your_event_mask);
945 /* Select ButtonPress and ButtonRelease events on the external window,
946 if no other app has already selected them (only one app can select
947 ButtonPress at a time: BadAccess results.)
949 if (! (xgwa.all_event_masks & (ButtonPressMask | ButtonReleaseMask)))
950 XSelectInput (dpy, window,
951 (xgwa.your_event_mask |
952 ButtonPressMask | ButtonReleaseMask));
956 window = VirtualRootWindowOfScreen (XtScreen (toplevel));
957 XtDestroyWidget (toplevel);
958 XGetWindowAttributes (dpy, window, &xgwa);
959 /* With RANDR, the root window can resize! */
960 XSelectInput (dpy, window, xgwa.your_event_mask | StructureNotifyMask);
961 visual_warning (xgwa.screen, window, xgwa.visual, xgwa.colormap, False);
965 Widget new = make_shell (XtScreen (toplevel), toplevel,
966 toplevel->core.width,
967 toplevel->core.height);
970 XtDestroyWidget (toplevel);
974 init_window (dpy, toplevel, version);
975 window = XtWindow (toplevel);
976 XGetWindowAttributes (dpy, window, &xgwa);
979 if (get_boolean_resource (dpy, "pair", "Boolean"))
981 toplevel2 = make_shell (xgwa.screen, 0,
982 toplevel->core.width,
983 toplevel->core.height);
984 init_window (dpy, toplevel2, version);
985 window2 = XtWindow (toplevel2);
987 # endif /* DEBUG_PAIR */
992 unsigned int bg = get_pixel_resource (dpy, xgwa.colormap,
993 "background", "Background");
994 XSetWindowBackground (dpy, window, bg);
995 XClearWindow (dpy, window);
999 XSetWindowBackground (dpy, window2, bg);
1000 XClearWindow (dpy, window2);
1005 if (!root_p && !on_window)
1006 /* wait for it to be mapped */
1007 XIfEvent (dpy, &event, MapNotify_event_p, (XPointer) window);
1011 /* This is the one and only place that the random-number generator is
1012 seeded in any screenhack. You do not need to seed the RNG again,
1013 it is done for you before your code is invoked. */
1014 # undef ya_rand_init
1017 run_screenhack_table (dpy, window,
1023 XtDestroyWidget (toplevel);
1024 XtDestroyApplicationContext (app);