window/wwmisc.c

   1 /*      $NetBSD: wwmisc.c,v 1.5 1997/11/21 08:37:34 lukem Exp $ */
   2
   3 /*
   4  * Copyright (c) 1983, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Edward Wang at The University of California, Berkeley.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *      This product includes software developed by the University of
  21  *      California, Berkeley and its contributors.
  22  * 4. Neither the name of the University nor the names of its contributors
  23  *    may be used to endorse or promote products derived from this software
  24  *    without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36  * SUCH DAMAGE.
  37  */
  38
  39 #include <sys/cdefs.h>
  40 #ifndef lint
  41 #if 0
  42 static char sccsid[] = "@(#)wwmisc.c    8.1 (Berkeley) 6/6/93";
  43 #else
  44 __RCSID("$NetBSD: wwmisc.c,v 1.5 1997/11/21 08:37:34 lukem Exp $");
  45 #endif
  46 #endif /* not lint */
  47
  48 #include "ww.h"
  49 #include "tt.h"
  50 #include "char.h"
  51
  52 /*
  53  * Sufficient but not necessary test for total visibility.
  54  */
  55 int
  56 wwvisible(w)
  57         struct ww *w;
  58 {
  59         int i;
  60         int nvis = 0;
  61
  62         for (i = w->ww_i.t; i < w->ww_i.b; i++)
  63                 nvis += w->ww_nvis[i];
  64         if (ISSET(w->ww_wflags, WWW_HASCURSOR)
  65             && w->ww_cur.r >= w->ww_i.t && w->ww_cur.r < w->ww_i.b
  66             && w->ww_cur.c >= w->ww_i.l && w->ww_cur.c < w->ww_i.r
  67             && wwsmap[w->ww_cur.r][w->ww_cur.c] == w->ww_index)
  68                 nvis++;
  69         return nvis == w->ww_i.nr * w->ww_i.nc;
  70 }
  71
  72 void
  73 wwbell()
  74 {
  75         ttputc(ctrl('g'));
  76 }