usr.bin/window/wwcursor.c

   1 /*
   2  * Copyright (c) 1983, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * Edward Wang at The University of California, Berkeley.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by the University of
  19  *      California, Berkeley and its contributors.
  20  * 4. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  *
  36  * @(#)wwcursor.c       8.1 (Berkeley) 6/6/93
  37  * $FreeBSD: src/usr.bin/window/wwcursor.c,v 1.1.1.1.14.1 2001/05/17 09:45:01 obrien Exp $
  38  * $DragonFly: src/usr.bin/window/wwcursor.c,v 1.2 2003/06/17 06:29:34 dillon Exp $
  39  */
  40
  41 #include "ww.h"
  42
  43 wwcursor(w, on)
  44 register struct ww *w;
  45 {
  46         register char *win;
  47
  48         if (on) {
  49                 if (w->ww_hascursor)
  50                         return;
  51                 w->ww_hascursor = 1;
  52         } else {
  53                 if (!w->ww_hascursor)
  54                         return;
  55                 w->ww_hascursor = 0;
  56         }
  57         if (wwcursormodes != 0) {
  58                 win = &w->ww_win[w->ww_cur.r][w->ww_cur.c];
  59                 *win ^= wwcursormodes;
  60                 if (w->ww_cur.r < w->ww_i.t || w->ww_cur.r >= w->ww_i.b
  61                     || w->ww_cur.c < w->ww_i.l || w->ww_cur.c >= w->ww_i.r)
  62                         return;
  63                 if (wwsmap[w->ww_cur.r][w->ww_cur.c] == w->ww_index) {
  64                         if (*win == 0)
  65                                 w->ww_nvis[w->ww_cur.r]++;
  66                         else if (*win == wwcursormodes)
  67                                 w->ww_nvis[w->ww_cur.r]--;
  68                         wwns[w->ww_cur.r][w->ww_cur.c].c_m ^= wwcursormodes;
  69                         wwtouched[w->ww_cur.r] |= WWU_TOUCHED;
  70                 }
  71         }
  72 }
  73
  74 wwsetcursormodes(new)
  75 register new;
  76 {
  77         register i;
  78         register struct ww *w;
  79         register old = wwcursormodes;
  80
  81         new &= wwavailmodes;
  82         if (new == wwcursormodes)
  83                 return;
  84         for (i = 0; i < NWW; i++)
  85                 if (wwindex[i] != 0 && (w = wwindex[i])->ww_hascursor) {
  86                         wwcursor(w, 0);
  87                         wwcursormodes = new;
  88                         wwcursor(w, 1);
  89                         wwcursormodes = old;
  90                 }
  91         wwcursormodes = new;
  92 }