copywin.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* 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 (c) 1995, by Sun Microsystems, Inc.
* All rights reserved.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* copywin.c
*
* XCurses Library
*
* Copyright 1990, 1995 by Mortice Kern Systems Inc. All rights reserved.
*
*/
#ifdef M_RCSID
#ifndef lint
static char rcsID[] = "$Header: /rd/src/libc/xcurses/rcs/copywin.c 1.2 1995/09/19 19:15:33 ant Exp $";
#endif
#endif
#include <private.h>
#include <wctype.h>
#undef min
#define min(a,b) ((a) < (b) ? (a) : (b))
/*f
* Version of copywin used internally by Curses to compute
* the intersection of the two windows before calling copywin().
*/
int
__m_copywin(s, t, transparent)
const WINDOW *s;
WINDOW *t;
int transparent;
{
int code, sminr, sminc, tminr, tminc, tmaxr, tmaxc;
#ifdef M_CURSES_TRACE
__m_trace("__m_copywin(%p, %p, %d)", s, t, transparent);
#endif
tmaxc = min(s->_begx + s->_maxx, t->_begx + t->_maxx) - 1 - t->_begx;
tmaxr = min(s->_begy + s->_maxy, t->_begy + t->_maxy) - 1 - t->_begy;
if (s->_begy < t->_begy) {
sminr = t->_begy - s->_begy;
tminr = 0;
} else {
sminr = 0;
tminr = s->_begy - t->_begy;
}
if (s->_begx < t->_begx) {
sminc = t->_begx - s->_begx;
tminc = 0;
} else {
sminc = 0;
tminc = s->_begx- t->_begx;
}
code = copywin(
s, t, sminr, sminc, tminr, tminc, tmaxr, tmaxc, transparent
);
return __m_return_code("__m_copywin", code);
}
/*f
* Overlay specified part of source window over destination window
* NOTE copying is destructive only if transparent is set to false.
*/
int
copywin(s, t, sminr, sminc, tminr, tminc, tmaxr, tmaxc, transparent)
const WINDOW *s;
WINDOW *t;
int sminr, sminc, tminr, tminc, tmaxr, tmaxc, transparent;
{
int i, tc;
cchar_t *st, *tt;
#ifdef M_CURSES_TRACE
__m_trace(
"copywin(%p, %p, %d, %d, %d, %d, %d, %d, %d)",
s, t, sminr, sminc, tminr, tminc, tmaxr, tmaxc, transparent
);
#endif
for (; tminr <= tmaxr; ++tminr, ++sminr) {
st = s->_line[sminr] + sminc;
tt = t->_line[tminr] + tminc;
/* Check target window for overlap of broad
* characters around the outer edge of the
* source window's location.
*/
__m_cc_erase(t, tminr, tminc, tminr, tminc);
__m_cc_erase(t, tminr, tmaxc, tminr, tmaxc);
/* Copy source region to target. */
for (tc = tminc; tc <= tmaxc; ++tc, ++tt, ++st) {
if (transparent)
if (iswspace(st->_wc[0]))
continue;
*tt = *st;
}
#ifdef M_CURSES_SENSIBLE_WINDOWS
/* Case 4 -
* Expand incomplete glyph from source into target window.
*/
if (0 < tminc && !t->_line[tminr][tminc]._f)
(void) __m_cc_expand(t, tminr, tminc, -1);
if (tmaxc + 1 < t->_maxx && !__m_cc_islast(t, tminr, tmaxc))
(void) __m_cc_expand(t, tminr, tmaxc, 1);
#endif /* M_CURSES_SENSIBLE_WINDOWS */
}
return __m_return_code("copywin", OK);
}