xref: /openbsd/lib/libcurses/base/lib_hline.c (revision 898184e3)
1 /* $OpenBSD: lib_hline.c,v 1.5 2010/01/12 23:22:05 nicm Exp $ */
2 
3 /****************************************************************************
4  * Copyright (c) 1998-2001,2006 Free Software Foundation, Inc.              *
5  *                                                                          *
6  * Permission is hereby granted, free of charge, to any person obtaining a  *
7  * copy of this software and associated documentation files (the            *
8  * "Software"), to deal in the Software without restriction, including      *
9  * without limitation the rights to use, copy, modify, merge, publish,      *
10  * distribute, distribute with modifications, sublicense, and/or sell       *
11  * copies of the Software, and to permit persons to whom the Software is    *
12  * furnished to do so, subject to the following conditions:                 *
13  *                                                                          *
14  * The above copyright notice and this permission notice shall be included  *
15  * in all copies or substantial portions of the Software.                   *
16  *                                                                          *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
20  * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
21  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
22  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
23  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
24  *                                                                          *
25  * Except as contained in this notice, the name(s) of the above copyright   *
26  * holders shall not be used in advertising or otherwise to promote the     *
27  * sale, use or other dealings in this Software without prior written       *
28  * authorization.                                                           *
29  ****************************************************************************/
30 
31 /****************************************************************************
32  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
33  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
34  ****************************************************************************/
35 
36 /*
37 **	lib_hline.c
38 **
39 **	The routine whline().
40 **
41 */
42 
43 #include <curses.priv.h>
44 
45 MODULE_ID("$Id: lib_hline.c,v 1.5 2010/01/12 23:22:05 nicm Exp $")
46 
47 NCURSES_EXPORT(int)
48 whline(WINDOW *win, chtype ch, int n)
49 {
50     int code = ERR;
51     NCURSES_SIZE_T start;
52     NCURSES_SIZE_T end;
53 
54     T((T_CALLED("whline(%p,%s,%d)"), win, _tracechtype(ch), n));
55 
56     if (win) {
57 	struct ldat *line = &(win->_line[win->_cury]);
58 	NCURSES_CH_T wch;
59 
60 	start = win->_curx;
61 	end = start + n - 1;
62 	if (end > win->_maxx)
63 	    end = win->_maxx;
64 
65 	CHANGED_RANGE(line, start, end);
66 
67 	if (ch == 0)
68 	    SetChar2(wch, ACS_HLINE);
69 	else
70 	    SetChar2(wch, ch);
71 	wch = _nc_render(win, wch);
72 
73 	while (end >= start) {
74 	    line->text[end] = wch;
75 	    end--;
76 	}
77 
78 	_nc_synchook(win);
79 	code = OK;
80     }
81     returnCode(code);
82 }
83