Return to add_wch.c CVS log

Up to [cvs.NetBSD.org] / src / lib / libcurses

Rework previous fix for getch cursor position when cursor is moved
without refresh.  If the window is not dirty but the window cursor
position does not match curscr then move the cursor.  This fixes
the issues seen in PR lib/54263.

/*   $NetBSD: add_wch.c,v 1.9 2019/06/09 07:40:14 blymn Exp $ */

/*
 * Copyright (c) 2005 The NetBSD Foundation Inc.
 * All rights reserved.
 *
 * This code is derived from code donated to the NetBSD Foundation
 * by Ruibiao Qiu <ruibiao@arl.wustl.edu,ruibiao@gmail.com>.
 *
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the NetBSD Foundation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
 * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: add_wch.c,v 1.9 2019/06/09 07:40:14 blymn Exp $");
#endif /* not lint */

#include <stdlib.h>
#include "curses.h"
#include "curses_private.h"
#ifdef DEBUG
#include <assert.h>
#endif

/*
 * add_wch --
 *	Add the wide character to the current position in stdscr.
 *
 */
int
add_wch(const cchar_t *wch)
{
	return wadd_wch(stdscr, wch);
}


/*
 * mvadd_wch --
 *      Add the wide character to stdscr at the given location.
 */
int
mvadd_wch(int y, int x, const cchar_t *wch)
{
	return mvwadd_wch(stdscr, y, x, wch);
}


/*
 * mvwadd_wch --
 *      Add the character to the given window at the given location.
 */
int
mvwadd_wch(WINDOW *win, int y, int x, const cchar_t *wch)
{
	if (wmove(win, y, x) == ERR)
		return ERR;

	return wadd_wch(win, wch);
}


/*
 * wadd_wch --
 *	Add the wide character to the current position in the
 *	given window.
 *
 */
int
wadd_wch(WINDOW *win, const cchar_t *wch)
{
	int y = win->cury;
	__LINE *lnp = NULL;

#ifdef DEBUG
	int i;
	int x = win->curx;

	for (i = 0; i < win->maxy; i++) {
		assert(win->alines[i]->sentinel == SENTINEL_VALUE);
	}
	__CTRACE(__CTRACE_INPUT, "wadd_wch: win(%p), x: %d, y: %d\n",
	    win, x, y);
#endif
	lnp = win->alines[y];
	return _cursesi_addwchar(win, &lnp, &(win->cury), &(win->curx), wch, 1);
}