[src/curses-v3]: src/lib/libcurses Add wscrl().

[jdc <jdc%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/73bf15dd5658
branches:  curses-v3
changeset: 479969:73bf15dd5658
user:      jdc <jdc%NetBSD.org@localhost>
date:      Sun Mar 05 23:26:50 2000 +0000

description:
Add wscrl().

diffstat:

 lib/libcurses/scroll.c |  22 ++++++++++++++++++----
 1 files changed, 18 insertions(+), 4 deletions(-)

diffs (53 lines):

diff -r 5d03380d9edb -r 73bf15dd5658 lib/libcurses/scroll.c
--- a/lib/libcurses/scroll.c    Sun Mar 05 23:26:33 2000 +0000
+++ b/lib/libcurses/scroll.c    Sun Mar 05 23:26:50 2000 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: scroll.c,v 1.10 1999/04/13 14:08:19 mrg Exp $  */
+/*     $NetBSD: scroll.c,v 1.10.6.1 2000/03/05 23:26:50 jdc Exp $      */
 
 /*
  * Copyright (c) 1981, 1993, 1994
@@ -38,7 +38,7 @@
 #if 0
 static char sccsid[] = "@(#)scroll.c   8.3 (Berkeley) 5/4/94";
 #else
-__RCSID("$NetBSD: scroll.c,v 1.10 1999/04/13 14:08:19 mrg Exp $");
+__RCSID("$NetBSD: scroll.c,v 1.10.6.1 2000/03/05 23:26:50 jdc Exp $");
 #endif
 #endif                         /* not lint */
 
@@ -52,18 +52,32 @@
 scroll(win)
        WINDOW *win;
 {
+       return(wscrl(win, 1));
+}
+
+/*
+ * wscrl --
+ *     Scroll a window n lines - up if n is positive, down if n is negative.
+ */
+int
+wscrl(win, lines)
+       WINDOW *win;
+       int     lines;
+{
        int     oy, ox;
 
 #ifdef DEBUG
-       __CTRACE("scroll: (%0.2o)\n", win);
+       __CTRACE("wscrl: (%0.2o) lines=%d\n", win, lines);
 #endif
 
        if (!(win->flags & __SCROLLOK))
                return (ERR);
+       if (!lines)
+               return (OK);
 
        getyx(win, oy, ox);
        wmove(win, 0, 0);
-       wdeleteln(win);
+       winsdelln(win, 0 - lines);
        wmove(win, oy, ox);
 
        if (win == curscr) {