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