xref: /openbsd-src/lib/libcurses/base/lib_redrawln.c (revision 92dd1ec0a89df25171bc5d61a3d95ea1a68cef0b)
1 /*	$OpenBSD: lib_redrawln.c,v 1.1 1999/01/18 19:09:57 millert Exp $	*/
2 
3 /****************************************************************************
4  * Copyright (c) 1998 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: Thomas E. Dickey <dickey@clark.net> 1997                        *
33  ****************************************************************************/
34 
35 /*
36  *	lib_redrawln.c
37  *
38  *	The routine wredrawln().
39  *
40  */
41 
42 #include <curses.priv.h>
43 
44 MODULE_ID("$From: lib_redrawln.c,v 1.7 1998/09/19 20:09:50 Alexander.V.Lukyanov Exp $")
45 
46 int wredrawln(WINDOW *win, int beg, int num)
47 {
48 	int i;
49 	int end;
50 	size_t len = (win->_maxx + 1) * sizeof(chtype);
51 
52 	T((T_CALLED("wredrawln(%p,%d,%d)"), win, beg, num));
53 
54 	if (beg < 0)
55 		beg = 0;
56 
57 	if (touchline (win, beg, num) == ERR)
58 		returnCode(ERR);
59 
60 	end = beg + num;
61 	if (end > win->_maxy + 1)
62 		end = win->_maxy + 1;
63 
64 	for (i = beg; i < end; i++)
65 	{
66 		memset (curscr->_line[i+win->_begy].text+win->_begx, 0, len);
67 		_nc_make_oldhash(i+win->_begy);
68 	}
69 
70 	returnCode(OK);
71 }
72