/*
 * 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 1997 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*      Copyright (c) 1988 AT&T */
/*        All Rights Reserved   */

/*
 * University Copyright- Copyright (c) 1982, 1986, 1988
 * The Regents of the University of California
 * All Rights Reserved
 *
 * University Acknowledgment- Portions of this document are derived from
 * software developed by the University of California, Berkeley, and its
 * contributors.
 */

/*LINTLIBRARY*/

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

/* This routine sets up a window buffer and returns a pointer to it. */

WINDOW  *
_makenew(int nlines, int ncols, int begy, int begx)
{
        /* order the register allocations against highest usage */
        WINDOW  *win;

#ifdef  DEBUG
        if (outf)
                fprintf(outf, "MAKENEW(%d, %d, %d, %d)\n",
                    nlines, ncols, begy, begx);
#endif  /* DEBUG */

        if ((win = (WINDOW *) malloc(sizeof (WINDOW))) == NULL)
                goto out_no_win;
        if ((win->_y = (chtype **) malloc(nlines * sizeof (chtype *))) == NULL)
                goto out_win;
#ifdef  _VR3_COMPAT_CODE
        if ((_y16update) && ((win->_y16 = (_ochtype **)
            calloc(1, nlines * sizeof (_ochtype *))) == NULL)) {
                goto out_y16;
        }
#endif  /* _VR3_COMPAT_CODE */
        if ((win->_firstch = (short *) malloc(2 * nlines * sizeof (short)))
            == NULL) {
#ifdef  _VR3_COMPAT_CODE
                if ((_y16update) && (win->_y16 != NULL))
                        free((char *) win->_y16);
out_y16:
#endif  /* _VR3_COMPAT_CODE */
                free((char *) win->_y);
out_win:
                free((char *) win);
out_no_win:
                curs_errno = CURS_BAD_MALLOC;
#ifdef  DEBUG
                strcpy(curs_parm_err, "_makenew");
#endif  /* DEBUG */
                return ((WINDOW *) NULL);
        } else
                win->_lastch = win->_firstch + nlines;

        win->_cury = win->_curx = 0;
        /*LINTED*/
        win->_maxy = (short) nlines;
        /*LINTED*/
        win->_maxx = (short) ncols;
        /*LINTED*/
        win->_begy = (short) begy;
        /*LINTED*/
        win->_begx = (short) begx;
        win->_clear = (((begy + SP->Yabove + begx) == 0) &&
            (nlines >= (LINES + SP->Yabove)) && (ncols >= COLS));
        win->_leave = win->_scroll = win->_use_idl = win->_use_keypad =
            win->_notimeout = win->_immed = win->_sync = FALSE;
        win->_use_idc = TRUE;
        win->_ndescs = win->_tmarg = 0;
        win->_bmarg = nlines - 1;
        win->_bkgd = _BLNKCHAR;
        win->_delay = win->_parx = win->_pary = -1;
        win->_attrs = A_NORMAL;
        win->_flags = _WINCHANGED;
        win->_parent = win->_padwin = (WINDOW *) NULL;
        (void) memset((char *) win->_firstch, 0, (nlines * sizeof (short)));
        {
                short   *lastch = win->_lastch,
                        *elastch = lastch + nlines;

                ncols--;
                while (lastch < elastch)
                    /*LINTED*/
                    *lastch++ = (short) ncols;
        }

        win->_insmode = FALSE;
        win->_index = 0;
        win->_nbyte = -1;

#ifdef  DEBUG
        if (outf) {
                fprintf(outf, "MAKENEW: win->_clear = %d\n", win->_clear);
                fprintf(outf, "MAKENEW: win->_flags = %0.2o\n", win->_flags);
                fprintf(outf, "MAKENEW: win->_maxy = %d\n", win->_maxy);
                fprintf(outf, "MAKENEW: win->_maxx = %d\n", win->_maxx);
                fprintf(outf, "MAKENEW: win->_begy = %d\n", win->_begy);
                fprintf(outf, "MAKENEW: win->_begx = %d\n", win->_begx);
        }
#endif  /* DEBUG */
        return (win);
}