182 lines
5.3 KiB
C
182 lines
5.3 KiB
C
/* $NetBSD: insdelln.c,v 1.23 2022/10/19 06:09:27 blymn Exp $ */
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/*
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* Copyright (c) 2000 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Julian Coleman.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: insdelln.c,v 1.23 2022/10/19 06:09:27 blymn Exp $");
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#endif /* not lint */
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/*
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* Based on deleteln.c and insertln.c -
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* Copyright (c) 1981, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*/
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#include <string.h>
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#include <stdlib.h>
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#include "curses.h"
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#include "curses_private.h"
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#ifndef _CURSES_USE_MACROS
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/*
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* insdelln --
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* Insert or delete lines on stdscr, leaving (cury, curx) unchanged.
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*/
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int
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insdelln(int nlines)
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{
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return winsdelln(stdscr, nlines);
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}
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#endif
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/*
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* winsdelln --
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* Insert or delete lines on the window, leaving (cury, curx) unchanged.
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*/
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int
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winsdelln(WINDOW *win, int nlines)
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{
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int y, i, last;
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__LINE *temp;
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#ifdef HAVE_WCHAR
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__LDATA *lp;
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#endif /* HAVE_WCHAR */
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attr_t attr;
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__CTRACE(__CTRACE_LINE,
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"winsdelln: (%p) cury=%d lines=%d\n", win, win->cury, nlines);
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if (!nlines)
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return OK;
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if (__using_color && win != curscr)
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attr = win->battr & __COLOR;
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else
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attr = 0;
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if (nlines > 0) {
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/* Insert lines */
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if (win->cury < win->scr_t || win->cury > win->scr_b) {
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/* Outside scrolling region */
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if (nlines > win->maxy - win->cury)
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nlines = win->maxy - win->cury;
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last = win->maxy - 1;
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} else {
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/* Inside scrolling region */
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if (nlines > win->scr_b + 1 - win->cury)
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nlines = win->scr_b + 1 - win->cury;
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last = win->scr_b;
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}
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for (y = last - nlines; y >= win->cury; --y) {
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win->alines[y]->flags &= ~__ISPASTEOL;
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win->alines[y + nlines]->flags &= ~__ISPASTEOL;
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if (win->orig == NULL) {
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temp = win->alines[y + nlines];
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win->alines[y + nlines] = win->alines[y];
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win->alines[y] = temp;
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} else {
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(void)memcpy(win->alines[y + nlines]->line,
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win->alines[y]->line,
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(size_t)win->maxx * __LDATASIZE);
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}
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}
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for (y = win->cury - 1 + nlines; y >= win->cury; --y)
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for (i = 0; i < win->maxx; i++) {
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win->alines[y]->line[i].ch = win->bch;
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win->alines[y]->line[i].attr = attr;
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win->alines[y]->line[i].cflags |=
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CA_BACKGROUND;
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win->alines[y]->line[i].cflags &=
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~CA_CONTINUATION;
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#ifdef HAVE_WCHAR
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lp = &win->alines[y]->line[i];
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if (_cursesi_copy_nsp(win->bnsp, lp) == ERR)
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return ERR;
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lp->wcols = 1;
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#endif /* HAVE_WCHAR */
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}
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for (y = last; y >= win->cury; --y)
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__touchline(win, y, 0, (int)win->maxx - 1);
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} else {
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/* Delete nlines */
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nlines = 0 - nlines;
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if (win->cury < win->scr_t || win->cury > win->scr_b) {
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/* Outside scrolling region */
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if (nlines > win->maxy - win->cury)
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nlines = win->maxy - win->cury;
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last = win->maxy;
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} else {
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/* Inside scrolling region */
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if (nlines > win->scr_b + 1 - win->cury)
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nlines = win->scr_b + 1 - win->cury;
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last = win->scr_b + 1;
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}
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for (y = win->cury; y < last - nlines; y++) {
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win->alines[y]->flags &= ~__ISPASTEOL;
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win->alines[y + nlines]->flags &= ~__ISPASTEOL;
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if (win->orig == NULL) {
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temp = win->alines[y];
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win->alines[y] = win->alines[y + nlines];
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win->alines[y + nlines] = temp;
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} else {
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(void)memcpy(win->alines[y]->line,
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win->alines[y + nlines]->line,
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(size_t)win->maxx * __LDATASIZE);
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}
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}
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for (y = last - nlines; y < last; y++)
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for (i = 0; i < win->maxx; i++) {
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win->alines[y]->line[i].ch = win->bch;
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win->alines[y]->line[i].attr = attr;
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win->alines[y]->line[i].cflags |=
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CA_BACKGROUND;
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win->alines[y]->line[i].cflags &=
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~CA_CONTINUATION;
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#ifdef HAVE_WCHAR
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lp = &win->alines[y]->line[i];
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lp->wcols = 1;
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if (_cursesi_copy_nsp(win->bnsp, lp) == ERR)
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return ERR;
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#endif /* HAVE_WCHAR */
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}
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for (y = win->cury; y < last; y++)
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__touchline(win, y, 0, (int)win->maxx - 1);
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}
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if (win->orig != NULL)
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__id_subwins(win->orig);
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__sync(win);
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return OK;
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}
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