xref: /illumos-gate/usr/src/lib/libcurses/screen/wborder.c (revision 1da57d551424de5a9d469760be7c4b4d4f10a755)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 /*	Copyright (c) 1988 AT&T	*/
28 /*	  All Rights Reserved	*/
29 
30 /*
31  * University Copyright- Copyright (c) 1982, 1986, 1988
32  * The Regents of the University of California
33  * All Rights Reserved
34  *
35  * University Acknowledgment- Portions of this document are derived from
36  * software developed by the University of California, Berkeley, and its
37  * contributors.
38  */
39 
40 /*LINTLIBRARY*/
41 
42 #include	<sys/types.h>
43 #include	<stdlib.h>
44 #include	"curses_inc.h"
45 
46 /*
47  *	Draw a box around a window.
48  *
49  *	ls : the character and attributes used for the left side.
50  *	rs : right side.
51  *	ts : top side.
52  *	bs : bottom side.
53  */
54 
55 #define	_LEFTSIDE	variables[0]
56 #define	_RIGHTSIDE	variables[1]
57 #define	_TOPSIDE	variables[2]
58 #define	_BOTTOMSIDE	variables[3]
59 #define	_TOPLEFT	variables[4]
60 #define	_TOPRIGHT	variables[5]
61 #define	_BOTTOMLEFT	variables[6]
62 #define	_BOTTOMRIGHT	variables[7]
63 
64 static	char	acs_values[] = {
65 		    'x', /* ACS_VLINE */
66 		    'x', /* ACS_VLINE */
67 		    'q', /* ACS_HLINE */
68 		    'q', /* ACS_HLINE */
69 		    'l', /* ACS_ULCORNER */
70 		    'k', /* ACS_URCORNER */
71 		    'm', /* ACS_LLCORNER */
72 		    'j' /* ACS_LRCORNER */
73 		};
74 
75 int
wborder(WINDOW * win,chtype ls,chtype rs,chtype ts,chtype bs,chtype tl,chtype tr,chtype bl,chtype br)76 wborder(WINDOW *win, chtype ls, chtype rs, chtype ts,
77 	chtype bs, chtype tl, chtype tr, chtype bl, chtype br)
78 {
79 	int	i, endy = win->_maxy - 1, endx = win->_maxx - 2;
80 	chtype	**_y = win->_y;	/* register version */
81 	chtype	*line_ptr, variables[8];
82 	int	x, sx, xend;
83 	chtype	wc;
84 
85 	_LEFTSIDE = ls;
86 	_RIGHTSIDE = rs;
87 	_TOPSIDE = ts;
88 	_BOTTOMSIDE = bs;
89 	_TOPLEFT = tl;
90 	_TOPRIGHT = tr;
91 	_BOTTOMLEFT = bl;
92 	_BOTTOMRIGHT = br;
93 
94 	for (i = 0; i < 8; i++) {
95 		if (_CHAR(variables[i]) == 0 ||
96 		    variables[i] & 0xFF00)
97 			variables[i] = acs_map[acs_values[i]];
98 		if (ISCBIT(variables[i]))
99 			variables[i] = _CHAR((RBYTE(variables[i])<<8) | \
100 			(LBYTE(variables[i])|MBIT)) | CBIT;
101 		variables[i] &= ~CBIT;
102 		variables[i] = _WCHAR(win, variables[i]) | _ATTR(variables[i]);
103 	}
104 
105 	/* do top and bottom edges and corners */
106 	xend = win->_maxx-1;
107 	x = 0;
108 	for (; x <= xend; ++x)
109 		if (!ISCBIT(_y[0][x]))
110 			break;
111 	for (; xend >= x; --xend)
112 		if (!ISCBIT(_y[0][endx])) {
113 			int	m;
114 			wc = RBYTE(_y[0][xend]);
115 			if ((m = xend + _curs_scrwidth[TYPE(wc)]) > win->_maxx)
116 				xend -= 1;
117 			else
118 				xend = m - 1;
119 			endx = xend - 1;
120 			break;
121 		}
122 	sx = x == 0 ? 1 : x;
123 	memSset((line_ptr = &_y[0][sx]), _TOPSIDE, endx);
124 	if (x == 0)
125 		*(--line_ptr) = _TOPLEFT;
126 	if (endx == win->_maxx-2)
127 		line_ptr[++endx] = _TOPRIGHT;
128 
129 	xend = win->_maxx-1;
130 	x = 0;
131 	for (; x <= xend; ++x)
132 		if (!ISCBIT(_y[endy][x]))
133 			break;
134 	for (; xend >= x; --xend)
135 		if (!ISCBIT(_y[endy][xend])) {
136 			int	m;
137 			wc = RBYTE(_y[endy][xend]);
138 			if ((m = xend + _curs_scrwidth[TYPE(wc)]) > win->_maxx)
139 				xend -= 1;
140 			else
141 				xend = m - 1;
142 			endx = xend - 1;
143 			break;
144 		}
145 	sx = x == 0 ? 1 : x;
146 
147 	memSset((line_ptr = &_y[endy][sx]), _BOTTOMSIDE, endx);
148 	if (x == 0)
149 		*--line_ptr = _BOTTOMLEFT;
150 	if (endx == win->_maxx-2)
151 		line_ptr[++endx] = _BOTTOMRIGHT;
152 
153 #ifdef	_VR3_COMPAT_CODE
154 	if (_y16update) {
155 		(*_y16update)(win, 1, ++endx, 0, 0);
156 		(*_y16update)(win, 1, endx--, endy, 0);
157 	}
158 #endif	/* _VR3_COMPAT_CODE */
159 
160 	/* left and right edges */
161 	while (--endy > 0) {
162 		wc = _y[endy][0];
163 		if (!ISCBIT(wc) && _curs_scrwidth[TYPE(RBYTE(wc))] == 1)
164 			_y[endy][0] = _LEFTSIDE;
165 		wc = _y[endy][endx];
166 		if (!ISCBIT(wc) && _curs_scrwidth[TYPE(RBYTE(wc))] == 1)
167 			_y[endy][endx] = _RIGHTSIDE;
168 
169 #ifdef	_VR3_COMPAT_CODE
170 		if (_y16update) {
171 			/* LINTED */
172 			win->_y16[endy][0] =  _TO_OCHTYPE(_LEFTSIDE);
173 			/* LINTED */
174 			win->_y16[endy][endx] = _TO_OCHTYPE(_RIGHTSIDE);
175 		}
176 #endif	/* _VR3_COMPAT_CODE */
177 	}
178 	return (wtouchln((win), 0, (win)->_maxy, TRUE));
179 }
180