usr/src/usr.bin/window/wwcursor.c

#ifndef lint
static  char *sccsid = "@(#)wwcursor.c  3.1 83/08/19";
#endif

#include "ww.h"

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

        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;
        }
        r = wwcurrow(w);
        c = wwcurcol(w);
        if (wwsmap[r][c] == w->ww_index) {
                wwns[r][c].c_m ^= wwcursormodes;
                wwtouched[r] = 1;
        }
}