ncurses 4.2
[ncurses.git] / ncurses / lib_vline.c
1 /****************************************************************************
2  * Copyright (c) 1998 Free Software Foundation, Inc.                        *
3  *                                                                          *
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6  * "Software"), to deal in the Software without restriction, including      *
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8  * distribute, distribute with modifications, sublicense, and/or sell       *
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,   *
19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
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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_vline.c
38 **
39 **      The routine wvline().
40 **
41 */
42
43 #include <curses.priv.h>
44
45 MODULE_ID("$Id: lib_vline.c,v 1.2 1998/02/11 12:13:55 tom Exp $")
46
47 int wvline(WINDOW *win, chtype ch, int n)
48 {
49 int   code = ERR;
50 short row, col;
51 short end;
52
53         T((T_CALLED("wvline(%p,%s,%d)"), win, _tracechtype(ch), n));
54
55         if (win) {
56                 row = win->_cury;
57                 col = win->_curx;
58                 end = row + n - 1;
59                 if (end > win->_maxy)
60                         end = win->_maxy;
61
62                 if (ch == 0)
63                         ch = ACS_VLINE;
64                 ch = _nc_render(win, ch);
65
66                 while(end >= row) {
67                         win->_line[end].text[col] = ch;
68                         if (win->_line[end].firstchar == _NOCHANGE
69                          || win->_line[end].firstchar > col)
70                                 win->_line[end].firstchar = col;
71                         if (win->_line[end].lastchar == _NOCHANGE
72                          || win->_line[end].lastchar < col)
73                                 win->_line[end].lastchar = col;
74                         end--;
75                 }
76
77                 _nc_synchook(win);
78                 code = OK;
79         }
80         returnCode(code);
81 }