ncurses 4.2
[ncurses.git] / ncurses / lib_hline.c
1 /****************************************************************************
2  * Copyright (c) 1998 Free Software Foundation, Inc.                        *
3  *                                                                          *
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9  * copies of the Software, and to permit persons to whom the Software is    *
10  * furnished to do so, subject to the following conditions:                 *
11  *                                                                          *
12  * The above copyright notice and this permission notice shall be included  *
13  * in all copies or substantial portions of the Software.                   *
14  *                                                                          *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
16  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
18  * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
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28
29 /****************************************************************************
30  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
31  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
32  ****************************************************************************/
33
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 1.2 1998/02/11 12:13:55 tom Exp $")
46
47 int whline(WINDOW *win, chtype ch, int n)
48 {
49 int   code = ERR;
50 short line;
51 short start;
52 short end;
53
54         T((T_CALLED("whline(%p,%s,%d)"), win, _tracechtype(ch), n));
55
56         if (win) {
57                 line  = win->_cury;
58                 start = win->_curx;
59                 end   = start + n - 1;
60                 if (end > win->_maxx)
61                         end   = win->_maxx;
62
63                 if (win->_line[line].firstchar == _NOCHANGE
64                  || win->_line[line].firstchar > start)
65                         win->_line[line].firstchar = start;
66                 if (win->_line[line].lastchar == _NOCHANGE
67                  || win->_line[line].lastchar < start)
68                         win->_line[line].lastchar = end;
69
70                 if (ch == 0)
71                         ch = ACS_HLINE;
72                 ch = _nc_render(win, ch);
73
74                 while ( end >= start) {
75                         win->_line[line].text[end] = ch;
76                         end--;
77                 }
78                 code = OK;
79         }
80         returnCode(code);
81 }