Now uses screen address for all buffers.

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

#ifndef lint
static  char *sccsid = "@(#)wwcursor.c  3.3 83/09/15";
#endif

#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];
               if (*win == 0)
                       w->ww_nvis[w->ww_cur.r]--;
               else if (*win == wwcursormodes)
                       w->ww_nvis[w->ww_cur.r]++;
               *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) {
                       wwns[w->ww_cur.r][w->ww_cur.c].c_m ^= wwcursormodes;
                       wwtouched[w->ww_cur.r] = 1;
               }
       }
}