17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate * CDDL HEADER START
37c478bd9Sstevel@tonic-gate *
47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
57c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
67c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
77c478bd9Sstevel@tonic-gate * with the License.
87c478bd9Sstevel@tonic-gate *
97c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
107c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
117c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
127c478bd9Sstevel@tonic-gate * and limitations under the License.
137c478bd9Sstevel@tonic-gate *
147c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
157c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
167c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
177c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
187c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
197c478bd9Sstevel@tonic-gate *
207c478bd9Sstevel@tonic-gate * CDDL HEADER END
217c478bd9Sstevel@tonic-gate */
227c478bd9Sstevel@tonic-gate /*
237c478bd9Sstevel@tonic-gate * Copyright (c) 1995, by Sun Microsystems, Inc.
247c478bd9Sstevel@tonic-gate * All rights reserved.
257c478bd9Sstevel@tonic-gate */
267c478bd9Sstevel@tonic-gate
277c478bd9Sstevel@tonic-gate /*
28*1da57d55SToomas Soome * winsdel.c
297c478bd9Sstevel@tonic-gate *
307c478bd9Sstevel@tonic-gate * XCurses Library
317c478bd9Sstevel@tonic-gate *
327c478bd9Sstevel@tonic-gate * Copyright 1990, 1995 by Mortice Kern Systems. All rights reserved.
337c478bd9Sstevel@tonic-gate *
347c478bd9Sstevel@tonic-gate */
357c478bd9Sstevel@tonic-gate
367c478bd9Sstevel@tonic-gate #ifdef M_RCSID
377c478bd9Sstevel@tonic-gate #ifndef lint
387c478bd9Sstevel@tonic-gate static char rcsID[] = "$Header: /rd/src/libc/xcurses/rcs/winsdel.c 1.4 1995/06/21 20:31:02 ant Exp $";
397c478bd9Sstevel@tonic-gate #endif
407c478bd9Sstevel@tonic-gate #endif
417c478bd9Sstevel@tonic-gate
427c478bd9Sstevel@tonic-gate #include <private.h>
437c478bd9Sstevel@tonic-gate #include <stdlib.h>
447c478bd9Sstevel@tonic-gate
457c478bd9Sstevel@tonic-gate /*f
467c478bd9Sstevel@tonic-gate * Insert/delete rows from a window.
477c478bd9Sstevel@tonic-gate *
487c478bd9Sstevel@tonic-gate * Positive N inserts rows and negative N deletes. The size of the
497c478bd9Sstevel@tonic-gate * window remains fixed so that rows insert/deleted will cause rows to
507c478bd9Sstevel@tonic-gate * disappear/appear at the end of the window.
517c478bd9Sstevel@tonic-gate *
52*1da57d55SToomas Soome * NOTE: This routine called in doupdate.c with curscr as window.
537c478bd9Sstevel@tonic-gate */
547c478bd9Sstevel@tonic-gate int
winsdelln(w,n)557c478bd9Sstevel@tonic-gate winsdelln(w, n)
567c478bd9Sstevel@tonic-gate WINDOW *w;
577c478bd9Sstevel@tonic-gate int n;
587c478bd9Sstevel@tonic-gate {
597c478bd9Sstevel@tonic-gate int row;
607c478bd9Sstevel@tonic-gate
617c478bd9Sstevel@tonic-gate #ifdef M_CURSES_TRACE
627c478bd9Sstevel@tonic-gate __m_trace("winsdelln(%p, %d)", w, n);
637c478bd9Sstevel@tonic-gate #endif
647c478bd9Sstevel@tonic-gate
657c478bd9Sstevel@tonic-gate /* Check bounds and limit if necessary. */
667c478bd9Sstevel@tonic-gate if (w->_maxy < w->_cury + abs(n))
677c478bd9Sstevel@tonic-gate n = (w->_maxy - w->_cury + 1) * (n < 0 ? -1 : 1);
687c478bd9Sstevel@tonic-gate
697c478bd9Sstevel@tonic-gate /* Insert/delete accomplished by pointer shuffling. */
707c478bd9Sstevel@tonic-gate if (n < 0) {
717c478bd9Sstevel@tonic-gate /* Delete n lines from current cursor line. */
727c478bd9Sstevel@tonic-gate (void) __m_ptr_move(
73*1da57d55SToomas Soome (void **) w->_line, w->_maxy,
747c478bd9Sstevel@tonic-gate w->_cury, w->_cury - (n+1), w->_maxy
757c478bd9Sstevel@tonic-gate );
767c478bd9Sstevel@tonic-gate
777c478bd9Sstevel@tonic-gate /* Blank lines come in at the bottom of the screen. */
787c478bd9Sstevel@tonic-gate row = w->_maxy + n;
797c478bd9Sstevel@tonic-gate } else {
807c478bd9Sstevel@tonic-gate /* Insert n lines before current cursor line. */
817c478bd9Sstevel@tonic-gate (void) __m_ptr_move(
82*1da57d55SToomas Soome (void **) w->_line, w->_maxy,
837c478bd9Sstevel@tonic-gate w->_maxy - n, w->_maxy-1, w->_cury
847c478bd9Sstevel@tonic-gate );
857c478bd9Sstevel@tonic-gate
867c478bd9Sstevel@tonic-gate /* Blank lines inserted at the cursor line. */
877c478bd9Sstevel@tonic-gate row = w->_cury;
887c478bd9Sstevel@tonic-gate }
897c478bd9Sstevel@tonic-gate
90*1da57d55SToomas Soome /* Clear inserted/deleted lines. */
917c478bd9Sstevel@tonic-gate (void) __m_cc_erase(w, row, 0, row + abs(n), w->_maxx-1);
927c478bd9Sstevel@tonic-gate
93*1da57d55SToomas Soome /* Mark from the cursor line to the end of window as dirty. */
947c478bd9Sstevel@tonic-gate (void) wtouchln(w, w->_cury, w->_maxy - w->_cury, 1);
957c478bd9Sstevel@tonic-gate
967c478bd9Sstevel@tonic-gate /* If we insert/delete lines at the top of the screen and we're,
977c478bd9Sstevel@tonic-gate * permitted to scroll, then treat the action as a scroll.
987c478bd9Sstevel@tonic-gate */
997c478bd9Sstevel@tonic-gate if (w->_scroll && w->_cury == 0 && n != 0 && (w->_flags & W_FULL_WINDOW)
1007c478bd9Sstevel@tonic-gate && w->_top == 0 && w->_bottom == w->_maxy)
1017c478bd9Sstevel@tonic-gate w->_scroll += n;
1027c478bd9Sstevel@tonic-gate else
1037c478bd9Sstevel@tonic-gate w->_scroll = 0;
1047c478bd9Sstevel@tonic-gate
1057c478bd9Sstevel@tonic-gate WSYNC(w);
1067c478bd9Sstevel@tonic-gate
1077c478bd9Sstevel@tonic-gate return __m_return_code("winsdelln", WFLUSH(w));
1087c478bd9Sstevel@tonic-gate }
1097c478bd9Sstevel@tonic-gate
110