OpenSolaris_b135/lib/libcurses/screen/newwin.c

/*
 * 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 2004 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.
 */

#pragma ident	"%Z%%M%	%I%	%E% SMI"

/*LINTLIBRARY*/

/* allocate space for and set up defaults for a new _window */

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

WINDOW	*
newwin(int nlines, int ncols, int by, int bx)
{
	WINDOW	*win;
	int		counter = 0;

	if (nlines <= 0)
		nlines = LINES - by;
	if (ncols <= 0)
		ncols = COLS - bx;

	if ((by < 0) || (bx < 0) || ((win = _makenew(nlines, ncols, by,
	    bx)) == (WINDOW *) NULL) || (_image(win) == ERR)) {
		return ((WINDOW *) NULL);
	}

	while (counter < nlines) {
		memSset(&win->_y[counter][0], (chtype) ' ', ncols);
#ifdef	_VR3_COMPAT_CODE
		if (_y16update) {
			int	i = ncols;

			while (i--)
				win->_y16[counter][i] = (_ochtype) ' ';
		}
#endif	/* _VR3_COMPAT_CODE */
		counter++;
	}

	win->_yoffset = SP->Yabove;
	return (win);
}

int
_image(WINDOW *win)
{
			int	i, nlines = win->_maxy;
#ifdef	_VR3_COMPAT_CODE
			size_t oscols = win->_maxx * sizeof (_ochtype);
#endif	/* _VR3_COMPAT_CODE */
			size_t scols = win->_maxx * sizeof (chtype);
			chtype	**_y = win->_y;
#ifdef	_VR3_COMPAT_CODE
			_ochtype	**_y16 = win->_y16;
#endif	/* _VR3_COMPAT_CODE */

	for (i = 0; i < nlines; i++) {
#ifdef	_VR3_COMPAT_CODE
		if (((_y[i] = (chtype *) malloc(scols)) == NULL) ||
		    ((_y16update) && ((_y16[i] = (_ochtype *)
		    malloc(oscols)) == NULL)))
#else	/* _VR3_COMPAT_CODE */
			if ((_y[i] = (chtype *) malloc(scols)) ==
			    NULL)
#endif	/* _VR3_COMPAT_CODE */
				{
				int	j;

				curs_errno = CURS_BAD_MALLOC;
#ifdef	DEBUG
				strcpy(curs_parm_err, "_image");
#endif	/* DEBUG */
#ifdef	_VR3_COMPAT_CODE
				for (j = 0; j <= i; j++) {
					if (_y[j] != NULL)
					free((char *) _y[j]);
					if ((_y16update) && (_y16[j] != NULL))
						free((char *) _y16[j]);
				}
#else	/* _VR3_COMPAT_CODE */
				for (j = 0; j < i; j++)
					free((char *) _y[j]);
#endif	/* _VR3_COMPAT_CODE */

				free((char *) win->_firstch);
				free((char *) win->_y);
#ifdef	_VR3_COMPAT_CODE
				if ((_y16update) && (win->_y16 != NULL))
					free((char *) win->_y16);
#endif	/* _VR3_COMPAT_CODE */
				free((char *) win);
				return (ERR);
			}
	}
	return (OK);
}