xref: /titanic_52/usr/src/ucblib/libcurses/scroll.c (revision 7c478bd95313f5f23a4c958a745db2134aa03244)
1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate  * Copyright 2001 Sun Microsystems, Inc.  All rights reserved.
3*7c478bd9Sstevel@tonic-gate  * Use is subject to license terms.
4*7c478bd9Sstevel@tonic-gate  */
5*7c478bd9Sstevel@tonic-gate 
6*7c478bd9Sstevel@tonic-gate /*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
7*7c478bd9Sstevel@tonic-gate /*	  All Rights Reserved  	*/
8*7c478bd9Sstevel@tonic-gate 
9*7c478bd9Sstevel@tonic-gate /*
10*7c478bd9Sstevel@tonic-gate  * Copyright (c) 1980 Regents of the University of California.
11*7c478bd9Sstevel@tonic-gate  * All rights reserved.  The Berkeley software License Agreement
12*7c478bd9Sstevel@tonic-gate  * specifies the terms and conditions for redistribution.
13*7c478bd9Sstevel@tonic-gate  */
14*7c478bd9Sstevel@tonic-gate 
15*7c478bd9Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
16*7c478bd9Sstevel@tonic-gate 
17*7c478bd9Sstevel@tonic-gate /*LINTLIBRARY*/
18*7c478bd9Sstevel@tonic-gate 
19*7c478bd9Sstevel@tonic-gate #ifndef lint
20*7c478bd9Sstevel@tonic-gate static char
21*7c478bd9Sstevel@tonic-gate sccsid[] = "@(#)scroll.c 1.6 88/02/08 SMI"; /* from UCB 5.1 85/06/07 */
22*7c478bd9Sstevel@tonic-gate #endif /* not lint */
23*7c478bd9Sstevel@tonic-gate 
24*7c478bd9Sstevel@tonic-gate #include	"curses.ext"
25*7c478bd9Sstevel@tonic-gate 
26*7c478bd9Sstevel@tonic-gate /*
27*7c478bd9Sstevel@tonic-gate  *	This routine scrolls the window up a line.
28*7c478bd9Sstevel@tonic-gate  */
29*7c478bd9Sstevel@tonic-gate 
30*7c478bd9Sstevel@tonic-gate int
31*7c478bd9Sstevel@tonic-gate scroll(WINDOW *win)
32*7c478bd9Sstevel@tonic-gate {
33*7c478bd9Sstevel@tonic-gate 	int	oy, ox;
34*7c478bd9Sstevel@tonic-gate 
35*7c478bd9Sstevel@tonic-gate #ifdef DEBUG
36*7c478bd9Sstevel@tonic-gate 	fprintf(outf, "SCROLL(%0.2o)\n", win);
37*7c478bd9Sstevel@tonic-gate #endif
38*7c478bd9Sstevel@tonic-gate 
39*7c478bd9Sstevel@tonic-gate 	if (!win->_scroll)
40*7c478bd9Sstevel@tonic-gate 		return (ERR);
41*7c478bd9Sstevel@tonic-gate 
42*7c478bd9Sstevel@tonic-gate 	getyx(win, oy, ox);
43*7c478bd9Sstevel@tonic-gate 	(void) wmove(win, 0, 0);
44*7c478bd9Sstevel@tonic-gate 	(void) wdeleteln(win);
45*7c478bd9Sstevel@tonic-gate 	(void) wmove(win, oy, ox);
46*7c478bd9Sstevel@tonic-gate 
47*7c478bd9Sstevel@tonic-gate 	if (win == curscr) {
48*7c478bd9Sstevel@tonic-gate 		(void) _putchar('\n');
49*7c478bd9Sstevel@tonic-gate 		if (!NONL)
50*7c478bd9Sstevel@tonic-gate 			win->_curx = 0;
51*7c478bd9Sstevel@tonic-gate #ifdef DEBUG
52*7c478bd9Sstevel@tonic-gate 		fprintf(outf, "SCROLL: win == curscr\n");
53*7c478bd9Sstevel@tonic-gate #endif
54*7c478bd9Sstevel@tonic-gate 	}
55*7c478bd9Sstevel@tonic-gate 
56*7c478bd9Sstevel@tonic-gate 	return (OK);
57*7c478bd9Sstevel@tonic-gate }
58