libcurses/screen/wborder.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 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.
 */

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

/*LINTLIBRARY*/

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

/*
 *  Draw a box around a window.
 *
 *  ls : the character and attributes used for the left side.
 *  rs : right side.
 *  ts : top side.
 *  bs : bottom side.
 */

#define _LEFTSIDE   variables[0]
#define _RIGHTSIDE  variables[1]
#define _TOPSIDE    variables[2]
#define _BOTTOMSIDE variables[3]
#define _TOPLEFT    variables[4]
#define _TOPRIGHT   variables[5]
#define _BOTTOMLEFT variables[6]
#define _BOTTOMRIGHT    variables[7]

static  char    acs_values[] = {
            'x', /* ACS_VLINE */
            'x', /* ACS_VLINE */
            'q', /* ACS_HLINE */
            'q', /* ACS_HLINE */
            'l', /* ACS_ULCORNER */
            'k', /* ACS_URCORNER */
            'm', /* ACS_LLCORNER */
            'j' /* ACS_LRCORNER */
        };

int
wborder(WINDOW *win, chtype ls, chtype rs, chtype ts,
    chtype bs, chtype tl, chtype tr, chtype bl, chtype br)
{
    int i, endy = win->_maxy - 1, endx = win->_maxx - 2;
    chtype  **_y = win->_y; /* register version */
    chtype  *line_ptr, variables[8];
    int x, sx, xend;
    chtype  wc;

    _LEFTSIDE = ls;
    _RIGHTSIDE = rs;
    _TOPSIDE = ts;
    _BOTTOMSIDE = bs;
    _TOPLEFT = tl;
    _TOPRIGHT = tr;
    _BOTTOMLEFT = bl;
    _BOTTOMRIGHT = br;

    for (i = 0; i < 8; i++) {
        if (_CHAR(variables[i]) == 0 ||
            variables[i] & 0xFF00)
            variables[i] = acs_map[acs_values[i]];
        if (ISCBIT(variables[i]))
            variables[i] = _CHAR((RBYTE(variables[i])<<8) | \
            (LBYTE(variables[i])|MBIT)) | CBIT;
        variables[i] &= ~CBIT;
        variables[i] = _WCHAR(win, variables[i]) | _ATTR(variables[i]);
    }

    /* do top and bottom edges and corners */
    xend = win->_maxx-1;
    x = 0;
    for (; x <= xend; ++x)
        if (!ISCBIT(_y[0][x]))
            break;
    for (; xend >= x; --xend)
        if (!ISCBIT(_y[0][endx])) {
            int m;
            wc = RBYTE(_y[0][xend]);
            if ((m = xend + _curs_scrwidth[TYPE(wc)]) > win->_maxx)
                xend -= 1;
            else
                xend = m - 1;
            endx = xend - 1;
            break;
        }
    sx = x == 0 ? 1 : x;
    memSset((line_ptr = &_y[0][sx]), _TOPSIDE, endx);
    if (x == 0)
        *(--line_ptr) = _TOPLEFT;
    if (endx == win->_maxx-2)
        line_ptr[++endx] = _TOPRIGHT;

    xend = win->_maxx-1;
    x = 0;
    for (; x <= xend; ++x)
        if (!ISCBIT(_y[endy][x]))
            break;
    for (; xend >= x; --xend)
        if (!ISCBIT(_y[endy][xend])) {
            int m;
            wc = RBYTE(_y[endy][xend]);
            if ((m = xend + _curs_scrwidth[TYPE(wc)]) > win->_maxx)
                xend -= 1;
            else
                xend = m - 1;
            endx = xend - 1;
            break;
        }
    sx = x == 0 ? 1 : x;

    memSset((line_ptr = &_y[endy][sx]), _BOTTOMSIDE, endx);
    if (x == 0)
        *--line_ptr = _BOTTOMLEFT;
    if (endx == win->_maxx-2)
        line_ptr[++endx] = _BOTTOMRIGHT;

#ifdef  _VR3_COMPAT_CODE
    if (_y16update) {
        (*_y16update)(win, 1, ++endx, 0, 0);
        (*_y16update)(win, 1, endx--, endy, 0);
    }
#endif  /* _VR3_COMPAT_CODE */

    /* left and right edges */
    while (--endy > 0) {
        wc = _y[endy][0];
        if (!ISCBIT(wc) && _curs_scrwidth[TYPE(RBYTE(wc))] == 1)
            _y[endy][0] = _LEFTSIDE;
        wc = _y[endy][endx];
        if (!ISCBIT(wc) && _curs_scrwidth[TYPE(RBYTE(wc))] == 1)
            _y[endy][endx] = _RIGHTSIDE;

#ifdef  _VR3_COMPAT_CODE
        if (_y16update) {
            /* LINTED */
            win->_y16[endy][0] =  _TO_OCHTYPE(_LEFTSIDE);
            /* LINTED */
            win->_y16[endy][endx] = _TO_OCHTYPE(_RIGHTSIDE);
        }
#endif  /* _VR3_COMPAT_CODE */
    }
    return (wtouchln((win), 0, (win)->_maxy, TRUE));
}