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 <dbus/dbus.h>
98 # include <X11/SGIScheme.h> /* for SgiUseSchemes() */
103 # include <X11/Xmu/Error.h>
105 # include <Xmu/Error.h>
111 #include "screenhackI.h"
116 #ifndef _XSCREENSAVER_VROOT_H_
117 # error Error! You have an old version of vroot.h! Check -I args.
118 #endif /* _XSCREENSAVER_VROOT_H_ */
121 # define isupper(c) ((c) >= 'A' && (c) <= 'Z')
124 # define _tolower(c) ((c) - 'A' + 'a')
128 /* This is defined by the SCREENHACK_MAIN() macro via screenhack.h.
130 extern struct xscreensaver_function_table *xscreensaver_function_table;
133 const char *progname; /* used by hacks in error messages */
134 const char *progclass; /* used by ../utils/resources.c */
135 Bool mono_p; /* used by hacks */
138 static XrmOptionDescRec default_options [] = {
139 { "-root", ".root", XrmoptionNoArg, "True" },
140 { "-window", ".root", XrmoptionNoArg, "False" },
141 { "-mono", ".mono", XrmoptionNoArg, "True" },
142 { "-install", ".installColormap", XrmoptionNoArg, "True" },
143 { "-noinstall",".installColormap", XrmoptionNoArg, "False" },
144 { "-visual", ".visualID", XrmoptionSepArg, 0 },
145 { "-window-id", ".windowID", XrmoptionSepArg, 0 },
146 { "-fps", ".doFPS", XrmoptionNoArg, "True" },
147 { "-no-fps", ".doFPS", XrmoptionNoArg, "False" },
148 { "-view", ".view", XrmoptionSepArg, 1 },
151 { "-pair", ".pair", XrmoptionNoArg, "True" },
152 # endif /* DEBUG_PAIR */
156 static char *default_defaults[] = {
158 "*geometry: 600x480", /* this should be .geometry, but nooooo... */
160 "*installColormap: false",
162 "*visualID: default",
164 "*desktopGrabber: xscreensaver-getimage %s",
168 static XrmOptionDescRec *merged_options;
169 static int merged_options_size;
170 static char **merged_defaults;
176 struct xscreensaver_function_table *ft = xscreensaver_function_table;
178 const XrmOptionDescRec *options = ft->options;
179 const char * const *defaults = ft->defaults;
180 const char *progclass = ft->progclass;
182 int def_opts_size, opts_size;
183 int def_defaults_size, defaults_size;
185 for (def_opts_size = 0; default_options[def_opts_size].option;
188 for (opts_size = 0; options[opts_size].option; opts_size++)
191 merged_options_size = def_opts_size + opts_size;
192 merged_options = (XrmOptionDescRec *)
193 malloc ((merged_options_size + 1) * sizeof(*default_options));
194 memcpy (merged_options, default_options,
195 (def_opts_size * sizeof(*default_options)));
196 memcpy (merged_options + def_opts_size, options,
197 ((opts_size + 1) * sizeof(*default_options)));
199 for (def_defaults_size = 0; default_defaults[def_defaults_size];
202 for (defaults_size = 0; defaults[defaults_size]; defaults_size++)
204 merged_defaults = (char **)
205 malloc ((def_defaults_size + defaults_size + 1) * sizeof (*defaults));;
206 memcpy (merged_defaults, default_defaults,
207 def_defaults_size * sizeof(*defaults));
208 memcpy (merged_defaults + def_defaults_size, defaults,
209 (defaults_size + 1) * sizeof(*defaults));
211 /* This totally sucks. Xt should behave like this by default.
212 If the string in `defaults' looks like ".foo", change that
217 for (s = merged_defaults; *s; s++)
220 const char *oldr = *s;
221 char *newr = (char *) malloc(strlen(oldr) + strlen(progclass) + 3);
222 strcpy (newr, progclass);
232 /* Make the X errors print out the name of this program, so we have some
233 clue which one has a bug when they die under the screensaver.
237 screenhack_ehandler (Display *dpy, XErrorEvent *error)
239 fprintf (stderr, "\nX error in %s:\n", progname);
240 if (XmuPrintDefaultErrorMessage (dpy, error, stderr))
243 fprintf (stderr, " (nonfatal.)\n");
248 MapNotify_event_p (Display *dpy, XEvent *event, XPointer window)
250 return (event->xany.type == MapNotify &&
251 event->xvisibility.window == (Window) window);
255 static Atom XA_WM_PROTOCOLS, XA_WM_DELETE_WINDOW;
257 /* Dead-trivial event handling: exits if "q" or "ESC" are typed.
258 Exit if the WM_PROTOCOLS WM_DELETE_WINDOW ClientMessage is received.
259 Returns False if the screen saver should now terminate.
262 screenhack_handle_event_1 (Display *dpy, XEvent *event)
264 switch (event->xany.type)
270 XLookupString (&event->xkey, &c, 1, &keysym, 0);
275 return False; /* exit */
276 else if (! (keysym >= XK_Shift_L && keysym <= XK_Hyper_R))
277 XBell (dpy, 0); /* beep for non-chord keys */
285 if (event->xclient.message_type != XA_WM_PROTOCOLS)
287 char *s = XGetAtomName(dpy, event->xclient.message_type);
288 if (!s) s = "(null)";
289 fprintf (stderr, "%s: unknown ClientMessage %s received!\n",
292 else if (event->xclient.data.l[0] != XA_WM_DELETE_WINDOW)
294 char *s1 = XGetAtomName(dpy, event->xclient.message_type);
295 char *s2 = XGetAtomName(dpy, event->xclient.data.l[0]);
296 if (!s1) s1 = "(null)";
297 if (!s2) s2 = "(null)";
298 fprintf (stderr, "%s: unknown ClientMessage %s[%s] received!\n",
303 return False; /* exit */
313 pick_visual (Screen *screen)
315 struct xscreensaver_function_table *ft = xscreensaver_function_table;
317 if (ft->pick_visual_hook)
319 Visual *v = ft->pick_visual_hook (screen);
323 return get_visual_resource (screen, "visualID", "VisualID", False);
327 /* Notice when the user has requested a different visual or colormap
328 on a pre-existing window (e.g., "-root -visual truecolor" or
329 "-window-id 0x2c00001 -install") and complain, since when drawing
330 on an existing window, we have no choice about these things.
333 visual_warning (Screen *screen, Window window, Visual *visual, Colormap cmap,
336 struct xscreensaver_function_table *ft = xscreensaver_function_table;
338 char *visual_string = get_string_resource (DisplayOfScreen (screen),
339 "visualID", "VisualID");
340 Visual *desired_visual = pick_visual (screen);
344 if (window == RootWindowOfScreen (screen))
345 strcpy (win, "root window");
347 sprintf (win, "window 0x%lx", (unsigned long) window);
350 sprintf (why, "-window-id 0x%lx", (unsigned long) window);
352 strcpy (why, "-root");
354 if (visual_string && *visual_string)
357 for (s = visual_string; *s; s++)
358 if (isupper (*s)) *s = _tolower (*s);
360 if (!strcmp (visual_string, "default") ||
361 !strcmp (visual_string, "default") ||
362 !strcmp (visual_string, "best"))
363 /* don't warn about these, just silently DWIM. */
365 else if (visual != desired_visual)
367 fprintf (stderr, "%s: ignoring `-visual %s' because of `%s'.\n",
368 progname, visual_string, why);
369 fprintf (stderr, "%s: using %s's visual 0x%lx.\n",
370 progname, win, XVisualIDFromVisual (visual));
372 free (visual_string);
375 if (visual == DefaultVisualOfScreen (screen) &&
376 has_writable_cells (screen, visual) &&
377 get_boolean_resource (DisplayOfScreen (screen),
378 "installColormap", "InstallColormap"))
380 fprintf (stderr, "%s: ignoring `-install' because of `%s'.\n",
382 fprintf (stderr, "%s: using %s's colormap 0x%lx.\n",
383 progname, win, (unsigned long) cmap);
386 if (ft->validate_visual_hook)
388 if (! ft->validate_visual_hook (screen, win, visual))
397 /* Bad Things Happen if stdin, stdout, and stderr have been closed
398 (as by the `sh incantation "attraction >&- 2>&-"). When you do
399 that, the X connection gets allocated to one of these fds, and
400 then some random library writes to stderr, and random bits get
401 stuffed down the X pipe, causing "Xlib: sequence lost" errors.
402 So, we cause the first three file descriptors to be open to
403 /dev/null if they aren't open to something else already. This
404 must be done before any other files are opened (or the closing
405 of that other file will again free up one of the "magic" first
408 We do this by opening /dev/null three times, and then closing
409 those fds, *unless* any of them got allocated as #0, #1, or #2,
410 in which case we leave them open. Gag.
412 Really, this crap is technically required of *every* X program,
413 if you want it to be robust in the face of "2>&-".
415 int fd0 = open ("/dev/null", O_RDWR);
416 int fd1 = open ("/dev/null", O_RDWR);
417 int fd2 = open ("/dev/null", O_RDWR);
418 if (fd0 > 2) close (fd0);
419 if (fd1 > 2) close (fd1);
420 if (fd2 > 2) close (fd2);
425 screenhack_table_handle_events (Display *dpy,
426 const struct xscreensaver_function_table *ft,
427 Window window, void *closure
429 , Window window2, void *closure2
433 XtAppContext app = XtDisplayToApplicationContext (dpy);
435 if (XtAppPending (app) & (XtIMTimer|XtIMAlternateInput))
436 XtAppProcessEvent (app, XtIMTimer|XtIMAlternateInput);
438 while (XPending (dpy))
441 XNextEvent (dpy, &event);
443 if (event.xany.type == ConfigureNotify)
445 if (event.xany.window == window)
446 ft->reshape_cb (dpy, window, closure,
447 event.xconfigure.width, event.xconfigure.height);
449 if (event.xany.window == window2)
450 ft->reshape_cb (dpy, window2, closure2,
451 event.xconfigure.width, event.xconfigure.height);
454 else if (event.xany.type == ClientMessage ||
455 (! (event.xany.window == window
456 ? ft->event_cb (dpy, window, closure, &event)
458 : event.xany.window == window2
459 ? ft->event_cb (dpy, window2, closure2, &event)
462 if (! screenhack_handle_event_1 (dpy, &event))
465 if (XtAppPending (app) & (XtIMTimer|XtIMAlternateInput))
466 XtAppProcessEvent (app, XtIMTimer|XtIMAlternateInput);
473 usleep_and_process_events (Display *dpy,
474 const struct xscreensaver_function_table *ft,
475 Window window, fps_state *fpst, void *closure,
478 , Window window2, fps_state *fpst2, void *closure2,
484 unsigned long quantum = 100000; /* 1/10th second */
493 if (fpst) fps_slept (fpst, quantum);
495 if (fpst2) fps_slept (fpst2, quantum);
499 if (! screenhack_table_handle_events (dpy, ft, window, closure
512 screenhack_do_fps (Display *dpy, Window w, fps_state *fpst, void *closure)
514 fps_compute (fpst, 0);
520 run_screenhack_table (Display *dpy,
525 const struct xscreensaver_function_table *ft,
528 #define LIVEWP_SIGNAL_INTERFACE "org.maemo.livewp"
529 #define LIVEWP_PAUSE_LIVEBG_ON_VIEW1 "pause_livebg_on_view1"
530 #define LIVEWP_PAUSE_LIVEBG_ON_VIEW2 "pause_livebg_on_view2"
531 #define LIVEWP_PAUSE_LIVEBG_ON_VIEW3 "pause_livebg_on_view3"
532 #define LIVEWP_PAUSE_LIVEBG_ON_VIEW4 "pause_livebg_on_view4"
533 #define LIVEWP_PAUSE_LIVEBG_ON_VIEW "pause_livebg_on_view"
534 #define LIVEWP_PLAY_LIVEBG_ON_VIEW1 "play_livebg_on_view1"
535 #define LIVEWP_PLAY_LIVEBG_ON_VIEW2 "play_livebg_on_view2"
536 #define LIVEWP_PLAY_LIVEBG_ON_VIEW3 "play_livebg_on_view3"
537 #define LIVEWP_PLAY_LIVEBG_ON_VIEW4 "play_livebg_on_view4"
538 #define LIVEWP_PLAY_LIVEBG_ON_VIEW "play_livebg_on_view"
540 DBusConnection* conn;
542 DBusMessageIter args;
546 int start_frame = 200;
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', member='pause_livebg_on_view1'", NULL);
585 dbus_bus_add_match (conn, "type='signal', interface='org.maemo.livewp', member='play_livebg_on_view1'", NULL);
588 dbus_bus_add_match (conn, "type='signal', interface='org.maemo.livewp', member='pause_livebg_on_view2'", NULL);
589 dbus_bus_add_match (conn, "type='signal', interface='org.maemo.livewp', member='play_livebg_on_view2'", NULL);
592 dbus_bus_add_match (conn, "type='signal', interface='org.maemo.livewp', member='pause_livebg_on_view3'", NULL);
593 dbus_bus_add_match (conn, "type='signal', interface='org.maemo.livewp', member='play_livebg_on_view3'", NULL);
596 dbus_bus_add_match (conn, "type='signal', interface='org.maemo.livewp', member='pause_livebg_on_view4'", NULL);
597 dbus_bus_add_match (conn, "type='signal', interface='org.maemo.livewp', member='play_livebg_on_view4'", NULL);
600 dbus_connection_flush(conn);
605 unsigned long delay = ft->draw_cb (dpy, window, closure);
607 unsigned long delay2 = 0;
608 if (window2) delay2 = ft->draw_cb (dpy, window2, closure2);
612 if (fpst) fps_cb (dpy, window, fpst, closure);
614 if (fpst2) fps_cb (dpy, window, fpst2, closure);
616 if (! usleep_and_process_events (dpy, ft,
617 window, fpst, closure, delay
619 , window2, fpst2, closure2, delay2
625 if (start_frame > 0) {
630 /* non blocking read of the next available message */
631 dbus_connection_read_write(conn, 0);
633 /* blocking read of the next available message */
634 dbus_connection_read_write(conn, 20000);
636 msg = dbus_connection_pop_message(conn);
641 fprintf(stderr, "signal on view %i\n", view);
642 /* 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); */
649 dbus_message_unref (msg);
652 if ((view == 1 && dbus_message_is_signal(msg, LIVEWP_SIGNAL_INTERFACE, LIVEWP_PLAY_LIVEBG_ON_VIEW1))||
653 (view == 2 && dbus_message_is_signal(msg, LIVEWP_SIGNAL_INTERFACE, LIVEWP_PLAY_LIVEBG_ON_VIEW2))||
654 (view == 3 && dbus_message_is_signal(msg, LIVEWP_SIGNAL_INTERFACE, LIVEWP_PLAY_LIVEBG_ON_VIEW3))||
655 (view == 4 && dbus_message_is_signal(msg, LIVEWP_SIGNAL_INTERFACE, LIVEWP_PLAY_LIVEBG_ON_VIEW4))){
656 /* fprintf(stderr, "Play scene visible %i\n", view); */
658 dbus_message_unref (msg);
662 /* dbus_connection_steal_borrowed_message(conn, msg); */
663 /* fprintf (stderr, "APPLICATION PATH11111111111111111111 %s %s %s\n", dbus_message_get_path(msg), dbus_message_get_interface (msg), dbus_message_get_member (msg));*/
664 /*dbus_connection_return_message(conn, msg);*/
665 if (dbus_message_is_signal(msg, LIVEWP_SIGNAL_INTERFACE, LIVEWP_PAUSE_LIVEBG_ON_VIEW) ||
666 dbus_message_is_signal(msg, LIVEWP_SIGNAL_INTERFACE, LIVEWP_PLAY_LIVEBG_ON_VIEW)){
667 if (!dbus_message_iter_init(msg, &args))
668 fprintf(stderr, "dbus message has no param\n");
669 else if (DBUS_TYPE_INT32 != dbus_message_iter_get_arg_type(&args))
670 fprintf(stderr, "dbus message param is not int \n");
672 dbus_message_iter_get_basic(&args, ¶m);
673 fprintf(stderr, "dbus param = %i\n", param);
676 if (dbus_message_is_signal(msg, LIVEWP_SIGNAL_INTERFACE, LIVEWP_PAUSE_LIVEBG_ON_VIEW)){
677 fprintf(stderr, "dbus Pause scene visible %i\n", param);
680 if (dbus_message_is_signal(msg, LIVEWP_SIGNAL_INTERFACE, LIVEWP_PLAY_LIVEBG_ON_VIEW)){
681 fprintf(stderr, "dbus Play scene visible %i\n", param);
684 /*msg = dbus_connection_pop_message(conn);*/
685 fprintf(stderr, "dbus steal message\n");
686 /*dbus_connection_steal_borrowed_message(conn, msg);*/
688 fprintf(stderr, "dbus return message\n");
689 /*dbus_connection_return_message(conn, msg);*/
693 dbus_message_unref (msg);
696 ft->free_cb (dpy, window, closure);
697 if (fpst) fps_free (fpst);
700 if (window2) ft->free_cb (dpy, window2, closure2);
701 if (window2) fps_free (fpst2);
703 /* close the connection */
704 dbus_connection_close(conn);
709 make_shell (Screen *screen, Widget toplevel, int width, int height)
711 Display *dpy = DisplayOfScreen (screen);
712 Visual *visual = pick_visual (screen);
713 Boolean def_visual_p = (toplevel &&
714 visual == DefaultVisualOfScreen (screen));
716 if (width <= 0) width = 600;
717 if (height <= 0) height = 480;
722 XtVaSetValues (toplevel,
723 XtNmappedWhenManaged, False,
726 XtNinput, True, /* for WM_HINTS */
728 XtRealizeWidget (toplevel);
729 window = XtWindow (toplevel);
731 if (get_boolean_resource (dpy, "installColormap", "InstallColormap"))
734 XCreateColormap (dpy, window, DefaultVisualOfScreen (screen),
736 XSetWindowColormap (dpy, window, cmap);
743 Colormap cmap = XCreateColormap (dpy, VirtualRootWindowOfScreen(screen),
745 bg = get_pixel_resource (dpy, cmap, "background", "Background");
746 bd = get_pixel_resource (dpy, cmap, "borderColor", "Foreground");
748 new = XtVaAppCreateShell (progname, progclass,
749 topLevelShellWidgetClass, dpy,
750 XtNmappedWhenManaged, False,
752 XtNdepth, visual_depth (screen, visual),
756 XtNbackground, (Pixel) bg,
757 XtNborderColor, (Pixel) bd,
758 XtNinput, True, /* for WM_HINTS */
761 if (!toplevel) /* kludge for the second window in -pair mode... */
762 XtVaSetValues (new, XtNx, 0, XtNy, 550, NULL);
764 XtRealizeWidget (new);
772 init_window (Display *dpy, Widget toplevel, const char *title)
775 XWindowAttributes xgwa;
776 XtPopup (toplevel, XtGrabNone);
777 XtVaSetValues (toplevel, XtNtitle, title, NULL);
779 /* Select KeyPress, and announce that we accept WM_DELETE_WINDOW.
781 window = XtWindow (toplevel);
782 XGetWindowAttributes (dpy, window, &xgwa);
783 XSelectInput (dpy, window,
784 (xgwa.your_event_mask | KeyPressMask | KeyReleaseMask |
785 ButtonPressMask | ButtonReleaseMask));
786 XChangeProperty (dpy, window, XA_WM_PROTOCOLS, XA_ATOM, 32,
788 (unsigned char *) &XA_WM_DELETE_WINDOW, 1);
793 main (int argc, char **argv)
795 struct xscreensaver_function_table *ft = xscreensaver_function_table;
797 /* osso_context_t *osso; */
799 XWindowAttributes xgwa;
805 Widget toplevel2 = 0;
809 Window on_window = 0;
817 progname = argv[0]; /* reset later */
818 progclass = ft->progclass;
821 ft->setup_cb (ft, ft->setup_arg);
826 /* We have to do this on SGI to prevent the background color from being
827 overridden by the current desktop color scheme (we'd like our backgrounds
828 to be black, thanks.) This should be the same as setting the
829 "*useSchemes: none" resource, but it's not -- if that resource is
830 present in the `default_defaults' above, it doesn't work, though it
831 does work when passed as an -xrm arg on the command line. So screw it,
832 turn them off from C instead.
834 SgiUseSchemes ("none");
837 toplevel = XtAppInitialize (&app, progclass, merged_options,
838 merged_options_size, &argc, argv,
839 merged_defaults, 0, 0);
841 dpy = XtDisplay (toplevel);
843 XtGetApplicationNameAndClass (dpy,
845 (char **) &progclass);
847 /* half-assed way of avoiding buffer-overrun attacks. */
848 if (strlen (progname) >= 100) ((char *) progname)[100] = 0;
850 XSetErrorHandler (screenhack_ehandler);
852 XA_WM_PROTOCOLS = XInternAtom (dpy, "WM_PROTOCOLS", False);
853 XA_WM_DELETE_WINDOW = XInternAtom (dpy, "WM_DELETE_WINDOW", False);
856 char *v = (char *) strdup(strchr(screensaver_id, ' '));
857 char *s1, *s2, *s3, *s4;
858 s1 = (char *) strchr(v, ' '); s1++;
859 s2 = (char *) strchr(s1, ' ');
860 s3 = (char *) strchr(v, '('); s3++;
861 s4 = (char *) strchr(s3, ')');
864 sprintf (version, "%s: from the XScreenSaver %s distribution (%s.)",
875 Bool help_p = (!strcmp(argv[1], "-help") ||
876 !strcmp(argv[1], "--help"));
877 fprintf (stderr, "%s\n", version);
878 for (s = progclass; *s; s++) fprintf(stderr, " ");
879 fprintf (stderr, " http://www.jwz.org/xscreensaver/\n\n");
882 fprintf(stderr, "Unrecognised option: %s\n", argv[1]);
883 fprintf (stderr, "Options include: ");
884 for (i = 0; i < merged_options_size; i++)
886 char *sw = merged_options [i].option;
887 Bool argp = (merged_options [i].argKind == XrmoptionSepArg);
888 int size = strlen (sw) + (argp ? 6 : 0) + 2;
891 fprintf (stderr, "\n\t\t ");
895 fprintf (stderr, "%s", sw);
896 if (argp) fprintf (stderr, " <arg>");
897 if (i != merged_options_size - 1) fprintf (stderr, ", ");
900 fprintf (stderr, ".\n");
905 fprintf (stderr, "\nResources:\n\n");
906 for (i = 0; i < merged_options_size; i++)
908 const char *opt = merged_options [i].option;
909 const char *res = merged_options [i].specifier + 1;
910 const char *val = merged_options [i].value;
911 char *s = get_string_resource (dpy, (char *) res, (char *) res);
916 while (L > 0 && (s[L-1] == ' ' || s[L-1] == '\t'))
920 fprintf (stderr, " %-16s %-18s ", opt, res);
921 if (merged_options [i].argKind == XrmoptionSepArg)
923 fprintf (stderr, "[%s]", (s ? s : "?"));
927 fprintf (stderr, "%s", (val ? val : "(null)"));
928 if (val && s && !strcasecmp (val, s))
929 fprintf (stderr, " [default]");
931 fprintf (stderr, "\n");
933 fprintf (stderr, "\n");
937 exit (help_p ? 0 : 1);
942 for (s = merged_defaults; *s; s++)
946 free (merged_options);
947 free (merged_defaults);
951 dont_clear = get_boolean_resource (dpy, "dontClearRoot", "Boolean");
952 mono_p = get_boolean_resource (dpy, "mono", "Boolean");
953 if (CellsOfScreen (DefaultScreenOfDisplay (dpy)) <= 2)
956 root_p = get_boolean_resource (dpy, "root", "Boolean");
959 char *s = get_string_resource (dpy, "windowID", "WindowID");
961 on_window = get_integer_resource (dpy, "windowID", "WindowID");
965 view = get_integer_resource (dpy, "view", "view");
966 fprintf(stderr, "View %i\n", view);
969 window = (Window) on_window;
970 XtDestroyWidget (toplevel);
971 XGetWindowAttributes (dpy, window, &xgwa);
972 visual_warning (xgwa.screen, window, xgwa.visual, xgwa.colormap, True);
974 /* Select KeyPress and resize events on the external window.
976 xgwa.your_event_mask |= KeyPressMask | StructureNotifyMask;
977 XSelectInput (dpy, window, xgwa.your_event_mask);
979 /* Select ButtonPress and ButtonRelease events on the external window,
980 if no other app has already selected them (only one app can select
981 ButtonPress at a time: BadAccess results.)
983 if (! (xgwa.all_event_masks & (ButtonPressMask | ButtonReleaseMask)))
984 XSelectInput (dpy, window,
985 (xgwa.your_event_mask |
986 ButtonPressMask | ButtonReleaseMask));
990 window = VirtualRootWindowOfScreen (XtScreen (toplevel));
991 XtDestroyWidget (toplevel);
992 XGetWindowAttributes (dpy, window, &xgwa);
993 /* With RANDR, the root window can resize! */
994 XSelectInput (dpy, window, xgwa.your_event_mask | StructureNotifyMask);
995 visual_warning (xgwa.screen, window, xgwa.visual, xgwa.colormap, False);
999 Widget new = make_shell (XtScreen (toplevel), toplevel,
1000 toplevel->core.width,
1001 toplevel->core.height);
1002 if (new != toplevel)
1004 XtDestroyWidget (toplevel);
1008 init_window (dpy, toplevel, version);
1009 window = XtWindow (toplevel);
1010 XGetWindowAttributes (dpy, window, &xgwa);
1013 if (get_boolean_resource (dpy, "pair", "Boolean"))
1015 toplevel2 = make_shell (xgwa.screen, 0,
1016 toplevel->core.width,
1017 toplevel->core.height);
1018 init_window (dpy, toplevel2, version);
1019 window2 = XtWindow (toplevel2);
1021 # endif /* DEBUG_PAIR */
1026 unsigned int bg = get_pixel_resource (dpy, xgwa.colormap,
1027 "background", "Background");
1028 XSetWindowBackground (dpy, window, bg);
1029 XClearWindow (dpy, window);
1033 XSetWindowBackground (dpy, window2, bg);
1034 XClearWindow (dpy, window2);
1039 if (!root_p && !on_window)
1040 /* wait for it to be mapped */
1041 XIfEvent (dpy, &event, MapNotify_event_p, (XPointer) window);
1045 /* This is the one and only place that the random-number generator is
1046 seeded in any screenhack. You do not need to seed the RNG again,
1047 it is done for you before your code is invoked. */
1048 # undef ya_rand_init
1051 run_screenhack_table (dpy, window,
1057 XtDestroyWidget (toplevel);
1058 XtDestroyApplicationContext (app);