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 /*LINTLIBRARY*/
16
17 #ifndef lint
18 static char
19 sccsid[] = "@(#)scroll.c 1.6 88/02/08 SMI"; /* from UCB 5.1 85/06/07 */
20 #endif /* not lint */
21
22 #include "curses.ext"
23
24 /*
25 * This routine scrolls the window up a line.
26 */
27
28 int
scroll(WINDOW * win)29 scroll(WINDOW *win)
30 {
31 int oy, ox;
32
33 #ifdef DEBUG
34 fprintf(outf, "SCROLL(%0.2o)\n", win);
35 #endif
36
37 if (!win->_scroll)
38 return (ERR);
39
40 getyx(win, oy, ox);
41 (void) wmove(win, 0, 0);
42 (void) wdeleteln(win);
43 (void) wmove(win, oy, ox);
44
45 if (win == curscr) {
46 (void) _putchar('\n');
47 if (!NONL)
48 win->_curx = 0;
49 #ifdef DEBUG
50 fprintf(outf, "SCROLL: win == curscr\n");
51 #endif
52 }
53
54 return (OK);
55 }
56