-/* xscreensaver, Copyright (c) 2001, 2002 by Jamie Zawinski <jwz@jwz.org>
+/* xscreensaver, Copyright (c) 2001, 2002, 2003 by Jamie Zawinski <jwz@jwz.org>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
static void
-get_image (Screen *screen, Window window, Bool verbose_p)
+get_image (Screen *screen, Window window,
+ Bool verbose_p,
+ Bool desk_p,
+ Bool video_p,
+ Bool image_p,
+ char *dir)
{
Display *dpy = DisplayOfScreen (screen);
- Bool desk_p = get_boolean_resource ("grabDesktopImages", "Boolean");
- Bool video_p = get_boolean_resource ("grabVideoFrames", "Boolean");
- Bool image_p = get_boolean_resource ("chooseRandomImages", "Boolean");
- char *dir = get_string_resource ("imageDirectory", "ImageDirectory");
-
enum { do_desk, do_video, do_image, do_bars } which = do_bars;
int count = 0;
if (desk_p) desk_p = False, changed_p = True;
if (video_p) video_p = False, changed_p = True;
# ifndef HAVE_BUILTIN_IMAGE_LOADER
+ /* We can display images on non-top-level windows with the builtin
+ loader, but not if we're using the external (chbg-based) loader. */
if (image_p) image_p = False, changed_p = True;
+# endif /* !HAVE_BUILTIN_IMAGE_LOADER */
+
if (changed_p && verbose_p)
fprintf (stderr, "%s: not a top-level window: using colorbars.\n",
progname);
-# endif /* !HAVE_BUILTIN_IMAGE_LOADER */
}
else if (window != VirtualRootWindowOfScreen (screen))
{
+ /* We can display images on non-root windows with the builtin loader,
+ but not if we're using the external (chbg-based) loader.
+ We can never display video on non-root windows (since that always
+ uses the external image loader.)
+ */
Bool changed_p = False;
if (video_p) video_p = False, changed_p = True;
# ifndef HAVE_BUILTIN_IMAGE_LOADER
if (!desk_p) desk_p = True, changed_p = True;
if (image_p) image_p = False, changed_p = True;
+# endif /* !HAVE_BUILTIN_IMAGE_LOADER */
+
if (changed_p && verbose_p)
fprintf (stderr,
"%s: not running on root window: grabbing desktop.\n",
progname);
-# endif /* !HAVE_BUILTIN_IMAGE_LOADER */
}
count = 0;
-#if 0
+#ifdef DEBUG
static Bool
mapper (XrmDatabase *db, XrmBindingList bindings, XrmQuarkList quarks,
XrmRepresentation *type, XrmValue *value, XPointer closure)
return False;
}
-#endif
-
+#endif /* DEBUG */
+
+
+#define USAGE "usage: %s [ -options... ] window-id\n" \
+ "\n" \
+ " This program puts an image on the given window.\n" \
+ "\n" \
+ " It is used by those xscreensaver demos that operate on images.\n" \
+ " The image may be a file loaded from disk, a frame grabbed from\n" \
+ " the system's video camera, or a screenshot of the desktop,\n" \
+ " depending on command-line options or the ~/.xscreensaver file.\n" \
+ "\n" \
+ " Options include:\n" \
+ "\n" \
+ " -display host:dpy.screen which display to use\n" \
+ " -root draw to the root window\n" \
+ " -verbose print diagnostics\n" \
+ " -images / -no-images whether to allow image file loading\n" \
+ " -video / -no-video whether to allow video grabs\n" \
+ " -desktop / -no-desktop whether to allow desktop screen grabs\n"\
+ " -directory <path> where to find image files to load\n" \
+ "\n" \
+ " The XScreenSaver Control Panel (xscreensaver-demo) lets you set the\n"\
+ " defaults for these options in your ~/.xscreensaver file.\n" \
+ "\n"
int
main (int argc, char **argv)
Widget toplevel;
Display *dpy;
Screen *screen;
+ char *oprogname = progname;
+
Window window = (Window) 0;
- Bool verbose_p = False;
char *s;
int i;
progname = argv[0];
s = strrchr (progname, '/');
if (s) progname = s+1;
+ oprogname = progname;
+
+ /* half-assed way of avoiding buffer-overrun attacks. */
+ if (strlen (progname) >= 100) progname[100] = 0;
+
/* We must read exactly the same resources as xscreensaver.
That means we must have both the same progclass *and* progname,
at least as far as the resource database is concerned. So,
put "xscreensaver" in argv[0] while initializing Xt.
*/
- argv[0] = "xscreensaver";
+ progname = argv[0] = "xscreensaver";
+
+ /* allow one dash or two. */
+ for (i = 1; i < argc; i++)
+ if (argv[i][0] == '-' && argv[i][1] == '-') argv[i]++;
+
toplevel = XtAppInitialize (&app, progclass, 0, 0, &argc, argv,
- defaults, 0, 0);
- argv[0] = progname;
+ defaults, 0, 0);
dpy = XtDisplay (toplevel);
screen = XtScreen (toplevel);
db = XtDatabase (dpy);
-
XtGetApplicationNameAndClass (dpy, &s, &progclass);
XSetErrorHandler (x_ehandler);
XSync (dpy, False);
- /* half-assed way of avoiding buffer-overrun attacks. */
- if (strlen (progname) >= 100) progname[100] = 0;
+ /* Randomize -- only need to do this here because this program
+ doesn't use the `screenhack.h' or `lockmore.h' APIs. */
+# undef ya_rand_init
+ ya_rand_init (0);
+
+ memset (&P, 0, sizeof(P));
+ P.db = db;
+ load_init_file (&P);
+
+ progname = argv[0] = oprogname;
for (i = 1; i < argc; i++)
{
- if (argv[i][0] == '-' && argv[i][1] == '-') argv[i]++;
- if (!strcmp (argv[i], "-v") ||
- !strcmp (argv[i], "-verbose"))
- verbose_p = True;
+ /* Have to re-process these, or else the .xscreensaver file
+ has priority over the command line...
+ */
+ if (!strcmp (argv[i], "-v") || !strcmp (argv[i], "-verbose"))
+ P.verbose_p = True;
+ else if (!strcmp (argv[i], "-desktop")) P.grab_desktop_p = True;
+ else if (!strcmp (argv[i], "-no-desktop")) P.grab_desktop_p = False;
+ else if (!strcmp (argv[i], "-video")) P.grab_video_p = True;
+ else if (!strcmp (argv[i], "-no-video")) P.grab_video_p = False;
+ else if (!strcmp (argv[i], "-images")) P.random_image_p = True;
+ else if (!strcmp (argv[i], "-no-images")) P.random_image_p = False;
+ else if (!strcmp (argv[i], "-directory") || !strcmp (argv[i], "-dir"))
+ P.image_directory = argv[++i];
else if (window == 0)
{
unsigned long w;
char dummy;
- if (!strcmp (argv[i], "root") ||
- !strcmp (argv[i], "-root") ||
- !strcmp (argv[i], "--root"))
+ if (!strcmp (argv[i], "-root") ||
+ !strcmp (argv[i], "root"))
window = RootWindowOfScreen (screen);
else if ((1 == sscanf (argv[i], " 0x%lx %c", &w, &dummy) ||
w != 0)
window = (Window) w;
else
- goto LOSE;
+ {
+ if (argv[i][0] == '-')
+ fprintf (stderr, "\n%s: unknown option \"%s\"\n",
+ progname, argv[i]);
+ else
+ fprintf (stderr, "\n%s: unparsable window ID: \"%s\"\n",
+ progname, argv[i]);
+ goto LOSE;
+ }
}
else
{
+ fprintf (stderr, "\n%s: unknown option \"%s\"\n",
+ progname, argv[i]);
LOSE:
- fprintf (stderr,
- "usage: %s [ -display host:dpy.screen ] [ -v ] window-id\n",
- progname);
- fprintf (stderr, "\n"
- "\tThis program puts an image of the desktop on the given window.\n"
- "\tIt is used by those xscreensaver demos that operate on images.\n"
- "\n");
+ fprintf (stderr, USAGE, progname);
exit (1);
}
}
- if (window == 0) goto LOSE;
-
- /* Randomize -- only need to do this here because this program
- doesn't use the `screenhack.h' or `lockmore.h' APIs. */
-# undef ya_rand_init
- ya_rand_init (0);
+ if (window == 0)
+ {
+ fprintf (stderr, "\n%s: no window specified!\n", progname);
+ goto LOSE;
+ }
- memset (&P, 0, sizeof(P));
- P.db = db;
- load_init_file (&P);
- if (P.verbose_p)
- verbose_p = True;
-
-#if 0
- /* Print out all the resources we read. */
- {
- XrmName name = { 0 };
- XrmClass class = { 0 };
- int count = 0;
- XrmEnumerateDatabase (db, &name, &class, XrmEnumAllLevels, mapper,
- (XtPointer) &count);
- }
-#endif
+#ifdef DEBUG
+ if (P.verbose_p) /* Print out all the resources we can see. */
+ {
+ XrmName name = { 0 };
+ XrmClass class = { 0 };
+ int count = 0;
+ XrmEnumerateDatabase (db, &name, &class, XrmEnumAllLevels, mapper,
+ (XtPointer) &count);
+ }
+#endif /* DEBUG */
- get_image (screen, window, verbose_p);
+ get_image (screen, window, P.verbose_p,
+ P.grab_desktop_p, P.grab_video_p, P.random_image_p,
+ P.image_directory);
exit (0);
}
projects / xscreensaver / blobdiff