NetBSD/lib/libcurses/copywin.c

122 lines
3.8 KiB
C

/* $NetBSD: copywin.c,v 1.11 2004/08/02 18:47:52 dsl Exp $ */
/*-
* Copyright (c) 1998-1999 Brett Lymn
* (blymn@baea.com.au, brett_lymn@yahoo.com.au)
* All rights reserved.
*
* This code has been donated to The NetBSD Foundation by the Author.
*
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
*
*/
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: copywin.c,v 1.11 2004/08/02 18:47:52 dsl Exp $");
#endif /* not lint */
#include <ctype.h>
#include <string.h>
#include "curses.h"
#include "curses_private.h"
/*
* copywin --
* Copy the box starting at (sminrow, smincol) with a size that
* matches the destination box (dminrow, dmincol) by (dmaxrow, dmaxcol)
* from the source window srcwin to the destination window dstwin.
* All these coordindinates are relative to the relevant window.
* If dooverlay is true then the copy is nondestructive otherwise the
* copy is destructive.
*/
int copywin(const WINDOW *srcwin, WINDOW *dstwin,
int sminrow, int smincol,
int dminrow, int dmincol, int dmaxrow, int dmaxcol, int dooverlay)
{
int dcol;
__LDATA *sp, *end;
/* overwrite() and overlay() can come here with -ve srcwin coords */
if (sminrow < 0) {
dminrow -= sminrow;
sminrow = 0;
}
if (smincol < 0) {
dmincol -= smincol;
smincol = 0;
}
/* for symmetry allow dstwin coords to be -ve as well */
if (dminrow < 0) {
sminrow -= dminrow;
dminrow = 0;
}
if (dmincol < 0) {
smincol -= dmincol;
dmincol = 0;
}
/* Bound dmaxcol for both windows (should be ok for dstwin) */
if (dmaxcol >= dstwin->maxx)
dmaxcol = dstwin->maxx - 1;
if (smincol + (dmaxcol - dmincol) >= srcwin->maxx)
dmaxcol = srcwin->maxx + dmincol - smincol - 1;
if (dmaxcol < dmincol)
/* nothing in the intersection */
return OK;
/* Bound dmaxrow for both windows (should be ok for dstwin) */
if (dmaxrow >= dstwin->maxy)
dmaxrow = dstwin->maxy - 1;
if (sminrow + (dmaxrow - dminrow) >= srcwin->maxy)
dmaxrow = srcwin->maxy + dminrow - sminrow - 1;
#ifdef DEBUG
__CTRACE("copywin %s mode: from (%d,%d) to (%d,%d-%d,%d)\n",
dooverlay ? "overlay" : "overwrite",
sminrow, smincol, dminrow, dmincol, dmaxrow, dmaxcol);
#endif
for (; dminrow <= dmaxrow; sminrow++, dminrow++) {
sp = &srcwin->lines[sminrow]->line[smincol];
end = sp + dmaxcol - dmincol;
if (dooverlay) {
for (dcol = dmincol; sp <= end; dcol++, sp++) {
/* XXX: Perhaps this should check for the
* background character
*/
if (!isspace(sp->ch)) {
wmove(dstwin, dminrow, dcol);
__waddch(dstwin, sp);
}
}
} else {
wmove(dstwin, dminrow, dmincol);
for (; sp <= end; sp++) {
__waddch(dstwin, sp);
}
}
}
return OK;
}