Home | History | Annotate | Line # | Download | only in libcurses 
      1 /*	$NetBSD: move.c,v 1.26 2024/12/23 02:58:04 blymn Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1981, 1993, 1994
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 #if 0
     35 static char sccsid[] = "@(#)move.c	8.2 (Berkeley) 5/4/94";
     36 #else
     37 __RCSID("$NetBSD: move.c,v 1.26 2024/12/23 02:58:04 blymn Exp $");
     38 #endif
     39 #endif				/* not lint */
     40 
     41 #include "curses.h"
     42 #include "curses_private.h"
     43 
     44 #ifndef _CURSES_USE_MACROS
     45 /*
     46  * move --
     47  *	Moves the cursor to the given point on stdscr.
     48  */
     49 int
     50 move(int y, int x)
     51 {
     52 
     53 	return wmove(stdscr, y, x);
     54 }
     55 
     56 #endif
     57 
     58 /*
     59  * wmove --
     60  *	Moves the cursor to the given point.
     61  */
     62 int
     63 wmove(WINDOW *win, int y, int x)
     64 {
     65 	__CTRACE(__CTRACE_MISC, "wmove: win %p, (%d, %d)\n", win, y, x);
     66 	if (__predict_false(win == NULL))
     67 		return ERR;
     68 
     69 	if (x < 0 || y < 0)
     70 		return ERR;
     71 	if (x > win->maxx || y >= win->maxy)
     72 		return ERR;
     73 
     74 	/* clear the EOL flags for both where we were and where we are going */
     75 	if (win->cury < win->maxy)
     76 		win->alines[win->cury]->flags &= ~ __ISPASTEOL;
     77 	win->alines[y]->flags &= ~ __ISPASTEOL;
     78 
     79 	if (x == win->maxx)
     80 		win->alines[y]->flags |= __ISPASTEOL;
     81 
     82 	win->curx = x;
     83 	win->cury = y;
     84 
     85 	return OK;
     86 }
     87 
     88 void
     89 wcursyncup(WINDOW *win)
     90 {
     91 
     92 	if (__predict_false(win == NULL))
     93 		return;
     94 
     95 	while (win->orig) {
     96 		wmove(win->orig, win->cury + win->begy - win->orig->begy,
     97 		      win->curx + win->begx - win->orig->begx);
     98 		win = win->orig;
     99 	}
    100 }
    101