BSD 4_3_Net_2 release

[unix-history] / usr / src / usr.bin / window / wwcursor.c

/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Edward Wang at The University of California, Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed by the University of
*      California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

#ifndef lint
static char sccsid[] = "@(#)wwcursor.c  3.12 (Berkeley) 6/6/90";
#endif /* not lint */

#include "ww.h"

wwcursor(w, on)
register struct ww *w;
{
       register char *win;

       if (on) {
               if (w->ww_hascursor)
                       return;
               w->ww_hascursor = 1;
       } else {
               if (!w->ww_hascursor)
                       return;
               w->ww_hascursor = 0;
       }
       if (wwcursormodes != 0) {
               win = &w->ww_win[w->ww_cur.r][w->ww_cur.c];
               *win ^= wwcursormodes;
               if (w->ww_cur.r < w->ww_i.t || w->ww_cur.r >= w->ww_i.b
                   || w->ww_cur.c < w->ww_i.l || w->ww_cur.c >= w->ww_i.r)
                       return;
               if (wwsmap[w->ww_cur.r][w->ww_cur.c] == w->ww_index) {
                       if (*win == 0)
                               w->ww_nvis[w->ww_cur.r]++;
                       else if (*win == wwcursormodes)
                               w->ww_nvis[w->ww_cur.r]--;
                       wwns[w->ww_cur.r][w->ww_cur.c].c_m ^= wwcursormodes;
                       wwtouched[w->ww_cur.r] |= WWU_TOUCHED;
               }
       }
}

wwsetcursormodes(new)
register new;
{
       register i;
       register struct ww *w;
       register old = wwcursormodes;

       new &= wwavailmodes;
       if (new == wwcursormodes)
               return;
       for (i = 0; i < NWW; i++)
               if (wwindex[i] != 0 && (w = wwindex[i])->ww_hascursor) {
                       wwcursor(w, 0);
                       wwcursormodes = new;
                       wwcursor(w, 1);
                       wwcursormodes = old;
               }
       wwcursormodes = new;
}