[src/curses-v3]: src/lib/libcurses winsdelln() implementation - insert or del...

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

details:   https://anonhg.NetBSD.org/src/rev/f232397a9b73
branches:  curses-v3
changeset: 479970:f232397a9b73
user:      jdc <jdc%NetBSD.org@localhost>
date:      Sun Mar 05 23:27:11 2000 +0000

description:
winsdelln() implementation - insert or delete lines.

diffstat:

 lib/libcurses/insdelln.c |  124 +++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 124 insertions(+), 0 deletions(-)

diffs (128 lines):

diff -r 73bf15dd5658 -r f232397a9b73 lib/libcurses/insdelln.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/libcurses/insdelln.c  Sun Mar 05 23:27:11 2000 +0000
@@ -0,0 +1,124 @@
+/*     $NetBSD: insdelln.c,v 1.1.2.1 2000/03/05 23:27:11 jdc Exp $     */
+
+/*
+ * Copyright (c) 2000 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Julian Coleman.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *        This product includes software developed by the NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* 
+ * Based on deleteln.c and insertln.c -
+ * Copyright (c) 1981, 1993, 1994
+ *     The Regents of the University of California.  All rights reserved.
+ */
+
+#include <string.h>
+
+#include "curses.h"
+
+/*
+ * winsdelln --
+ *     Insert or delete lines on the window, leaving (cury, curx) unchanged.
+ */
+int
+winsdelln(win, lines)
+       WINDOW *win;
+       int     lines;
+{
+       int     y, i;
+       __LINE *temp;
+
+#ifdef DEBUG
+       __CTRACE("winsdelln: (%0.2o) cury=%d lines=%d\n", win, win->cury,
+           lines);
+#endif
+
+       if (!lines)
+               return(OK);
+
+       if (lines > 0) {
+               /* Insert lines */
+               if (lines > win->maxy - win->cury)
+                       lines = win->maxy - win->cury;
+               for (y = win->maxy - lines - 1 ; y >= win->cury; --y) {
+                       win->lines[y]->flags &= ~__ISPASTEOL;
+                       win->lines[y + lines]->flags &= ~__ISPASTEOL;
+                       if (win->orig == NULL) {
+                               temp = win->lines[y + lines];
+                               win->lines[y + lines] = win->lines[y];
+                               win->lines[y] = temp;
+                       } else {
+                               (void) memcpy(win->lines[y + lines]->line,
+                                   win->lines[y]->line,
+                                   (size_t) win->maxx * __LDATASIZE * lines);
+                               temp = win->lines[y];
+                       }
+               }
+               for (y = win->cury - 1 + lines; y >= win->cury; --y)
+                       for (i = 0; i < win->maxx; i++) {
+                               win->lines[y]->line[i].ch = ' ';
+                               win->lines[y]->line[i].attr = 0;
+                       }
+               for (y = win->maxy - 1; y >= win->cury; --y)
+                       __touchline(win, y, 0, (int) win->maxx - 1, 0);
+       } else {
+               /* Delete lines */
+               lines = 0 - lines;
+               if (lines > win->maxy - win->cury)
+                       lines = win->maxy - win->cury;
+               for (y = win->cury; y < win->maxy - lines; y++) {
+                       win->lines[y]->flags &= ~__ISPASTEOL;
+                       win->lines[y + lines]->flags &= ~__ISPASTEOL;
+                       if (win->orig == NULL) {
+                               temp = win->lines[y];
+                               win->lines[y] = win->lines[y + lines];
+                               win->lines[y + lines] = temp;
+                       } else {
+                               (void) memcpy(win->lines[y]->line,
+                                   win->lines[y + lines]->line,
+                                   (size_t) win->maxx * __LDATASIZE * lines);
+                               temp = win->lines[y + lines];
+                       }
+               }
+               for (y = win->maxy - lines; y < win->maxy; y++)
+                       for (i = 0; i < win->maxx; i++) {
+                               win->lines[y]->line[i].ch = ' ';
+                               win->lines[y]->line[i].attr = 0;
+                       }
+               for (y = win->cury; y < win->maxy; y++)
+                       __touchline(win, y, 0, (int) win->maxx - 1, 0);
+       }
+       if (win->orig == NULL)
+               __id_subwins(win);
+       return (OK);
+}