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/* $OpenBSD: lib_redrawln.c,v 1.1 1997/12/03 05:21:28 millert Exp $ */
/******************************************************************************
* Copyright 1997 by Thomas E. Dickey <dickey@clark.net> *
* All Rights Reserved. *
* *
* Permission to use, copy, modify, and distribute this software and its *
* documentation for any purpose and without fee is hereby granted, provided *
* that the above copyright notice appear in all copies and that both that *
* copyright notice and this permission notice appear in supporting *
* documentation, and that the name of the above listed copyright holder(s) *
* not be used in advertising or publicity pertaining to distribution of the *
* software without specific, written prior permission. *
* *
* THE ABOVE LISTED COPYRIGHT HOLDER(S) DISCLAIM ALL WARRANTIES WITH REGARD *
* TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND *
* FITNESS, IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE *
* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES *
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN *
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR *
* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. *
******************************************************************************/
/*
* lib_redrawln.c
*
* The routine wredrawln().
*
*/
#include <curses.priv.h>
MODULE_ID("Id: lib_redrawln.c,v 1.1 1997/11/29 20:10:56 tom Exp $")
int wredrawln(WINDOW *win, int beg, int num)
{
int i;
T((T_CALLED("wredrawln(%p,%d,%d)"), win, beg, num));
if (touchline(win, beg, num) == OK) {
size_t len = win->_maxx * sizeof(chtype);
/*
* XSI says that wredrawln() tells the library not to base
* optimization on the contents of the lines that are marked.
* We do that by changing the contents to nulls after touching
* the corresponding lines to get the optimizer's attention.
*
* FIXME: this won't work if the application makes further
* updates before the next refresh.
*/
for (i = beg; (i < beg + num) && (i < win->_maxy); i++) {
memset(win->_line[i].text, 0, len);
}
}
returnCode(OK);
}
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