/*
 * |-----------------------------------------------------------|
 * | Copyright (c) 1991, 1990 MIPS Computer Systems, Inc.      |
 * | All Rights Reserved                                       |
 * |-----------------------------------------------------------|
 * |          Restricted Rights Legend                         |
 * | Use, duplication, or disclosure by the Government is      |
 * | subject to restrictions as set forth in                   |
 * | subparagraph (c)(1)(ii) of the Rights in Technical        |
 * | Data and Computer Software Clause of DFARS 252.227-7013.  |
 * |         MIPS Computer Systems, Inc.                       |
 * |         950 DeGuigne Avenue                               |
 * |         Sunnyvale, California 94088-3650, USA             |
 * |-----------------------------------------------------------|
 */
#ident	"$Header: wredrawln.c,v 1.4.2.1 92/06/24 14:07:47 marker Exp $"
/*	Copyright (c) 1984 AT&T	*/
/*	  All Rights Reserved  	*/

/*	THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T	*/
/*	The copyright notice above does not evidence any   	*/
/*	actual or intended publication of such source code.	*/


/*
 * This routine indicates to curses that a screen line is garbaged and
 * should be thrown away before having anything written over the top of it.
 * It could be used for programs such as editors which want a command to
 * redraw just a single line. Such a command could be used in cases where
 * there is a noisy line and redrawing the entire screen would be subject
 * to even more noise. Just redrawing the single line gives some semblance
 * of hope that it would show up unblemished.
 *
 * This is a more refined version of clearok
 */

#include	"curses_inc.h"

wredrawln(win, begline, numlines)
register	WINDOW		*win;
int		begline;
register	int	numlines;
{
    register	short	*firstch, *efirstch;

    if (numlines <= 0)
	return (ERR);
    if (begline < 0)
	begline = 0;
    if (begline + numlines > win->_maxy)
	numlines = win->_maxy - begline;

    firstch = win->_firstch + begline;
    efirstch = firstch + numlines;
    while (firstch < efirstch)
	*firstch++ = _REDRAW;

    return (win->_immed ? wrefresh(win) : OK);
}
