xref: /netbsd-src/lib/libcurses/border.c (revision 481fca6e59249d8ffcf24fef7cfbe7b131bfb080)
1 /*	$NetBSD: border.c,v 1.6 2000/04/24 14:09:42 blymn Exp $	*/
2 
3 /*
4  * Copyright (c) 2000 The NetBSD Foundation, Inc.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to The NetBSD Foundation
8  * by Julian Coleman.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  * 3. All advertising materials mentioning features or use of this software
19  *    must display the following acknowledgement:
20  *        This product includes software developed by the NetBSD
21  *        Foundation, Inc. and its contributors.
22  * 4. Neither the name of The NetBSD Foundation nor the names of its
23  *    contributors may be used to endorse or promote products derived
24  *    from this software without specific prior written permission.
25  *
26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36  * POSSIBILITY OF SUCH DAMAGE.
37  */
38 
39 #include <sys/cdefs.h>
40 #ifndef lint
41 __RCSID("$NetBSD: border.c,v 1.6 2000/04/24 14:09:42 blymn Exp $");
42 #endif				/* not lint */
43 
44 #include "curses.h"
45 #include "curses_private.h"
46 
47 #ifndef _CURSES_USE_MACROS
48 
49 /*
50  * border --
51  *      Draw a border around stdscr using the specified
52  *	delimiting characters.
53  */
54 int
55 border(chtype left, chtype right, chtype top, chtype bottom, chtype topleft,
56        chtype topright, chtype botleft, chtype botright)
57 {
58 	return wborder(stdscr, left, right, top, bottom, topleft, topright,
59 		       botleft, botright);
60 }
61 
62 #endif
63 
64 /*
65  * wborder --
66  *	Draw a border around the given window using the specified delimiting
67  *	characters.
68  */
69 int
70 wborder(WINDOW *win, chtype left, chtype right, chtype top, chtype bottom,
71 	chtype topleft, chtype topright, chtype botleft, chtype botright)
72 {
73 	int	 endy, endx, i;
74 	__LDATA	*fp, *lp;
75 
76 	if (!(left & __CHARTEXT)) left = ACS_VLINE;
77 	if (!(right & __CHARTEXT)) right = ACS_VLINE;
78 	if (!(top & __CHARTEXT)) top = ACS_HLINE;
79 	if (!(bottom & __CHARTEXT)) bottom = ACS_HLINE;
80 	if (!(topleft & __CHARTEXT)) topleft = ACS_ULCORNER;
81 	if (!(topright & __CHARTEXT)) topright = ACS_URCORNER;
82 	if (!(botleft & __CHARTEXT)) botleft = ACS_LLCORNER;
83 	if (!(botright & __CHARTEXT)) botright = ACS_LRCORNER;
84 
85 #ifdef DEBUG
86 	__CTRACE("wborder: left = %c, 0x%x\n", left & __CHARTEXT,
87 	    left & __ATTRIBUTES);
88 	__CTRACE("wborder: right = %c, 0x%x\n", right & __CHARTEXT,
89 	    right & __ATTRIBUTES);
90 	__CTRACE("wborder: top = %c, 0x%x\n", top & __CHARTEXT,
91 	    top & __ATTRIBUTES);
92 	__CTRACE("wborder: bottom = %c, 0x%x\n", bottom & __CHARTEXT,
93 	    bottom & __ATTRIBUTES);
94 	__CTRACE("wborder: topleft = %c, 0x%x\n", topleft & __CHARTEXT,
95 	    topleft & __ATTRIBUTES);
96 	__CTRACE("wborder: topright = %c, 0x%x\n", topright & __CHARTEXT,
97 	    topright & __ATTRIBUTES);
98 	__CTRACE("wborder: botleft = %c, 0x%x\n", botleft & __CHARTEXT,
99 	    botleft & __ATTRIBUTES);
100 	__CTRACE("wborder: botright = %c, 0x%x\n", botright & __CHARTEXT,
101 	    botright & __ATTRIBUTES);
102 #endif
103 
104 	/* Merge window attributes */
105 	left |= (left & __COLOR) ? (win->wattr & ~__COLOR) : win->wattr;
106 	right |= (right & __COLOR) ? (win->wattr & ~__COLOR) : win->wattr;
107 	top |= (top & __COLOR) ? (win->wattr & ~__COLOR) : win->wattr;
108 	bottom |= (bottom & __COLOR) ? (win->wattr & ~__COLOR) : win->wattr;
109 	topleft |= (topleft & __COLOR) ? (win->wattr & ~__COLOR) : win->wattr;
110 	topright |= (topright & __COLOR) ? (win->wattr & ~__COLOR) : win->wattr;
111 	botleft |= (botleft & __COLOR) ? (win->wattr & ~__COLOR) : win->wattr;
112 	botright |= (botright & __COLOR) ? (win->wattr & ~__COLOR) : win->wattr;
113 
114 	endx = win->maxx - 1;
115 	endy = win->maxy - 1;
116 	fp = win->lines[0]->line;
117 	lp = win->lines[endy]->line;
118 
119 	/* Sides */
120 	for (i = 1; i < endy; i++) {
121 		win->lines[i]->line[0].ch = (wchar_t) left & __CHARTEXT;
122 		win->lines[i]->line[0].bch = win->bch;
123 		win->lines[i]->line[0].attr = (attr_t) left & __ATTRIBUTES;
124 		win->lines[i]->line[0].battr = win->battr;
125 		win->lines[i]->line[endx].ch = (wchar_t) right & __CHARTEXT;
126 		win->lines[i]->line[endx].bch = win->bch;
127 		win->lines[i]->line[endx].attr = (attr_t) right & __ATTRIBUTES;
128 		win->lines[i]->line[endx].battr = win->battr;
129 	}
130 	for (i = 1; i < endx; i++) {
131 		fp[i].ch = (wchar_t) top & __CHARTEXT;
132 		fp[i].bch = win->bch;
133 		fp[i].attr = (attr_t) top & __ATTRIBUTES;
134 		fp[i].battr = win->battr;
135 		lp[i].ch = (wchar_t) bottom & __CHARTEXT;
136 		lp[i].bch = win->bch;
137 		lp[i].attr = (attr_t) bottom & __ATTRIBUTES;
138 		lp[i].battr = win->battr;
139 	}
140 
141 	/* Corners */
142 	if (!(win->maxx == LINES && win->maxy == COLS &&
143 	    (win->flags & __SCROLLOK) && (win->flags & __SCROLLWIN))) {
144 		fp[0].ch = (wchar_t) topleft & __CHARTEXT;
145 		fp[0].bch = win->bch;
146 		fp[0].attr = (attr_t) topleft & __ATTRIBUTES;
147 		fp[0].battr = win->battr;
148 		fp[endx].ch = (wchar_t) topright & __CHARTEXT;
149 		fp[endx].bch = win->bch;
150 		fp[endx].attr = (attr_t) topright & __ATTRIBUTES;
151 		fp[endx].battr = win->battr;
152 		lp[0].ch = (wchar_t) botleft & __CHARTEXT;
153 		lp[0].bch = win->bch;
154 		lp[0].attr = (attr_t) botleft & __ATTRIBUTES;
155 		lp[0].battr = win->battr;
156 		lp[endx].ch = (wchar_t) botright & __CHARTEXT;
157 		lp[endx].bch = win->bch;
158 		lp[endx].attr = (attr_t) botright & __ATTRIBUTES;
159 		lp[endx].battr = win->battr;
160 	}
161 	__touchwin(win);
162 	return (OK);
163 }
164