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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 1997 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1988 AT&T */
/* All Rights Reserved */
/*
* University Copyright- Copyright (c) 1982, 1986, 1988
* The Regents of the University of California
* All Rights Reserved
*
* University Acknowledgment- Portions of this document are derived from
* software developed by the University of California, Berkeley, and its
* contributors.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*LINTLIBRARY*/
#include <sys/types.h>
#include <string.h>
#include "curses_inc.h"
/*
* Insert/delete lines
* id < 0 : number of lines to delete
* id > 0 : number of lines to insert
*/
int
winsdelln(WINDOW *win, int id)
{
int endy, endx, to, fr, num_lines, dir;
chtype *sw;
char *mk;
bool savimmed, savesync;
short x, y, quick, *begch, *endch;
#ifdef _VR3_COMPAT_CODE
/* LINTED */
void (*update_ptr)();
/*
* Null out the update pointer so that in wclrtoeol we do not
* update the _y16 area but we wait till the bottom of this
* function to do it in one fell swoop.
*/
if (_y16update) {
update_ptr = _y16update;
_y16update = NULL;
} else
update_ptr = NULL;
#endif /* _VR3_COMPAT_CODE */
if ((win->_cury >= win->_tmarg) && (win->_cury <= win->_bmarg))
endy = win->_bmarg + 1;
else
endy = win->_maxy;
if (id < 0) {
/*
* Check that the amount of lines to delete aren't larger
* than the window. We save num_lines only so that we
* don't have to re-compute if the if comes out true.
*/
if ((num_lines = win->_cury - endy) > id)
id = num_lines;
/*
* "fr" is the line that we are coming "fr"om and
* moving "to" the new place. This is the offset which
* we have to re-align our pointers by.
* We want to start setting the current line's pointer
* to point to the offset's line. We want to move line "fr"
* to line "to".
*/
to = win->_cury;
fr = to - id;
num_lines = endy - fr;
dir = 1;
} else {
/* can't insert more lines than are in the region */
if ((num_lines = endy - win->_cury) < id)
id = num_lines;
to = endy - 1;
fr = to - id;
num_lines = fr - (win->_cury - 1);
dir = -1;
}
/*
* If this window has no parents or children, then we can manipulate
* pointers to simulate insert/delete line. Otherwise,
* to propogate the changes to parents and siblings
* we have to memcpy the text around.
*
* Set quick to tell us which we have to do.
*/
quick = ((win->_ndescs <= 0) && (win->_parent == NULL));
begch = win->_firstch;
endch = win->_lastch;
endx = win->_maxx;
for (; num_lines > 0; num_lines--, to += dir, fr += dir) {
/* can be done quickly */
if (quick) {
sw = win->_y[to];
win->_y[to] = win->_y[fr];
win->_y[fr] = sw;
if ((win == curscr) && _MARKS != NULL) {
mk = _MARKS[to];
_MARKS[to] = _MARKS[fr];
_MARKS[fr] = mk;
/* for color terminal do the same for */
/* color marks */
if (_COLOR_MARKS != NULL) {
mk = _COLOR_MARKS[to];
_COLOR_MARKS[to] = _COLOR_MARKS[fr];
_COLOR_MARKS[fr] = mk;
}
}
} else
/* slow update */
(void) memcpy((char *) win->_y[to], (char *)
win->_y[fr], (endx * sizeof (chtype)));
/*
* If this is curscr, the firstch[] and lastch[]
* arrays contain blank information.
*/
if (win == curscr) {
begch[to] = begch[fr];
endch[to] = endch[fr];
_CURHASH[to] = _CURHASH[fr];
} else {
/* regular window, update the change structure */
begch[to] = 0;
endch[to] = endx - 1;
}
}
/* clear the insert/delete lines */
if (id < 0)
num_lines = endy - to;
else
num_lines = to - (win->_cury - 1);
if (num_lines > 0) { /* Is this if needed ? */
savimmed = win->_immed;
savesync = win->_sync;
win->_immed = win->_sync = FALSE;
x = win->_curx;
y = win->_cury;
win->_curx = 0;
for (; num_lines > 0; --num_lines, to += dir) {
/* LINTED */
win->_cury = (short) to;
(void) wclrtoeol(win);
}
win->_curx = x;
win->_cury = y;
win->_immed = savimmed;
win->_sync = savesync;
}
win->_flags |= (_WINCHANGED|_WINSDEL);
#ifdef _VR3_COMPAT_CODE
if (update_ptr) {
_y16update = update_ptr;
(*_y16update)(win, endy - y, endx, y, 0);
}
#endif /* _VR3_COMPAT_CODE */
if (win->_sync)
wsyncup(win);
return ((win != curscr && savimmed) ? wrefresh(win) : OK);
}
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