usr.bin/window/wwmisc.c

   1 /*      @(#)wwmisc.c    8.1 (Berkeley) 6/6/93   */
   2 /*      $NetBSD: wwmisc.c,v 1.7 2003/08/07 11:17:41 agc Exp $   */
   3
   4 /*
   5  * Copyright (c) 1983, 1993
   6  *      The Regents of the University of California.  All rights reserved.
   7  *
   8  * This code is derived from software contributed to Berkeley by
   9  * Edward Wang at The University of California, Berkeley.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include "ww.h"
  37 #include "tt.h"
  38 #include "char.h"
  39
  40 /*
  41  * Sufficient but not necessary test for total visibility.
  42  */
  43 int
  44 wwvisible(struct ww *w)
  45 {
  46         int i;
  47         int nvis = 0;
  48
  49         for (i = w->ww_i.t; i < w->ww_i.b; i++)
  50                 nvis += w->ww_nvis[i];
  51         if (ISSET(w->ww_wflags, WWW_HASCURSOR)
  52             && w->ww_cur.r >= w->ww_i.t && w->ww_cur.r < w->ww_i.b
  53             && w->ww_cur.c >= w->ww_i.l && w->ww_cur.c < w->ww_i.r
  54             && wwsmap[w->ww_cur.r][w->ww_cur.c] == w->ww_index)
  55                 nvis++;
  56         return nvis == w->ww_i.nr * w->ww_i.nc;
  57 }
  58
  59 void
  60 wwbell(void)
  61 {
  62         ttputc(ctrl('g'));
  63 }