/*      @(#)wwcursor.c  8.1 (Berkeley) 6/6/93   */
/*      $NetBSD: wwcursor.c,v 1.7 2003/08/07 11:17:37 agc Exp $ */

/*
 * Copyright (c) 1983, 1993
 *      The 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. 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.
 */

#include "ww.h"

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

        if (on) {
                if (ISSET(w->ww_wflags, WWW_HASCURSOR))
                        return;
                SET(w->ww_wflags, WWW_HASCURSOR);
        } else {
                if (!ISSET(w->ww_wflags, WWW_HASCURSOR))
                        return;
                CLR(w->ww_wflags, WWW_HASCURSOR);
        }
        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;
                }
        }
}

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

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