/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*  Copyright (c) 1988 AT&T */
/*    All Rights Reserved   */


/*
 *      Copyright (c) 1997, by Sun Microsystems, Inc.
 *      All rights reserved.
 */

/*LINTLIBRARY*/

#include        <sys/types.h>
#include        "curses_inc.h"

/*
 *      Move(cury, curx) of win to(y, x).
 *      It is guaranteed that the cursor is left at the start
 *      of a whole character nearest to(y, x).
 */

int
wmbmove(WINDOW *win, int y, int x)
{
        chtype  *wcp, *wp, *ep;

        if (y < 0 || x < 0 || y >= win->_maxy || x >= win->_maxx)
                return (ERR);

        if (_scrmax > 1) {
                wcp = win->_y[y];
                wp = wcp + x;
                ep = wcp + win->_maxx;

                /* make wp points to the start of a character */
                if (ISCBIT(*wp)) {
                        for (; wp >= wcp; --wp)
                                if (!ISCBIT(*wp))
                                        break;
                        if (wp < wcp) {
                                wp = wcp+x+1;
                                for (; wp < ep; ++wp)
                                        if (!ISCBIT(*wp))
                                                break;
                        }
                }

                /* make sure that the character is whole */
                if (wp + _curs_scrwidth[TYPE(*wp)] > ep)
                        return (ERR);

                /* the new x position */
                /*LINTED*/
                x = (int)(wp - wcp);
        }

        if (y != win->_cury || x != win->_curx) {
                win->_nbyte = -1;
                /*LINTED*/
                win->_cury = (short)y;
                /*LINTED*/
                win->_curx = (short)x;
        }

        return (win->_immed ? wrefresh(win) : OK);
}