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

#ifndef lint
static char sccsid[] = "@(#)wwcursor.c  3.8 %G%";
#endif

/*
* Copyright (c) 1983 Regents of the University of California,
* All rights reserved.  Redistribution permitted subject to
* the terms of the Berkeley Software License Agreement.
*/

#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;
}