/* Copyright 1998 by Vadim Kolontsov			
 * All rights reserved
 *
 * Distribute freely, except: don't remove my name from the source or
 * documentation (don't take credit for my work), mark your changes (don't
 * get me blamed for your possible bugs), don't alter or remove this
 * notice.  May be sold if buildable source is provided to buyer.  No
 * warrantee of any kind, express or implied, is included with this
 * software; use at your own risk, responsibility for damages (if any) to
 * anyone resulting from the use of this software rests entirely with the
 * user.
 *
 * Send bug reports, bug fixes, enhancements, requests, flames, etc., and
 * I'll try to keep a version up to date.  I can be reached as follows:
 *
 * Vadim Kolontsov <sb@123.org>
 *-----------------------------------------------------------------------
 * This program sets attribute "override_redirect" to True for any window
 * you've specified (using window name). Window Managers should ignore
 * such windows; it's useful, for example, if you're using wmx Window Manager,
 * and want to have a clock on every virtual screen and without any
 * borders. Just add the following string to your X-startfile (after
 * starting watch app):
 *
 *   xnodecor -w watch
 *
 * (assuming that your watch application has a window named "watch")
 *  
 * For details see http://sb.123.org/xnodecor.html
 *
 * Tested on FreeBSD 2.2.2, XFree86 3.2, wmx-4
 *
 * Compilation:
 * 
 *    gcc -o xnodecor xnodecor.c -L/usr/X11R6/lib -I/usr/X11R6/include -lX11 */

#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
 
#define WAIT_DEFAULT	0
#define WAIT_TIMEOUT	15
#define VERBOSE_DEFAULT	0

int main(int argc, char *argv[])
{
   Display *d;
   Window w1, w2, *wins;
   int c;
   XSetWindowAttributes a;
   char *name, *program_name, *display_name = NULL;
   unsigned int i, n, found = 0,
   	        f_wait = WAIT_DEFAULT, 
	    	f_verbose = VERBOSE_DEFAULT,
		delay = WAIT_TIMEOUT;

   if (argv && argv[0] && *argv[0])
      program_name = (program_name = rindex(argv[0], '/')) ?
	 (*++program_name ? program_name : "xnodecor") : argv[0];

   while ((c = getopt(argc, argv, "vd:wt:h")) != EOF)
      switch (c)
      {
	 case 'd':
	    display_name = strdup(optarg);
	    break;

	 case 'w':
	    f_wait = f_wait ? 0 : 1;
	    break;
	    
	 case 'v':
	    f_verbose = f_verbose ? 0 : 1;
	    break;
	    
	 case 't':
	    delay = atoi(optarg);
	    break;

	 case 'h':
	 default:
	    fprintf(stderr, "Usage: %s [options] window-name\n\n"
		  	    "   -d display	specify alternative display\n"
			    "   -w		wait for specified window (default: %swait)\n"
			    "   -t n		timeout for waiting (default: %d sec)\n"
			    "   -v		verbose mode (default: %s)\n"
 			    "   -h		this help\n\n", program_name, 
			    f_wait ? "" : "no ", delay, 
			    f_verbose ? "on" : "off");
	    exit(0);
      }

   argc -= optind;
   argv += optind;
   
   if (argc != 1)
   {
      fprintf(stderr, "%s: Window name not specified\n", program_name);
      exit(1);
   }

   d = XOpenDisplay(display_name);
   if (!d)
   {
      fprintf(stderr, "%s: Can't open display\n", program_name);
      exit(1);
   }

   do
   {
      if (XQueryTree(d, RootWindow(d, 0), &w1, &w2, &wins, &n) == 0)
      {
	 fprintf(stderr, "%s: XQueryTree failed\n", program_name);
	 exit(1);
      }
      
      found = 0;
      for (i = 0; i < n; i++)
	 if (XFetchName(d, wins[i], &name))
	 {
	    if (f_verbose) printf("%s\n", name);
	    if (!strcmp(name, argv[0]))
	    {
	       if (f_verbose) printf("(found!)\n");

	       a.override_redirect = 1;
	       XChangeWindowAttributes(d, wins[i], CWOverrideRedirect, &a);
	       found = 1;
	    }
	 }

      if (f_wait)
	 sleep(1);
   } while (f_wait && delay-- && !found);
   
   XCloseDisplay(d);
}