freebsd-dev/lib/libcurses/id_subwins.c

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1994-05-27 05:00:24 +00:00
/*
* Copyright (c) 1981, 1993, 1994
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* The Regents of the University of California. All rights reserved.
*
* 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. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*/
#ifndef lint
static char sccsid[] = "@(#)id_subwins.c 8.2 (Berkeley) 5/4/94";
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#endif /* not lint */
#include "curses.h"
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/*
* __id_subwins --
* Re-sync the pointers to lines for all the subwindows.
*/
void
__id_subwins(orig)
register WINDOW *orig;
{
register WINDOW *win;
register int oy, realy, y;
realy = orig->begy + orig->cury;
for (win = orig->nextp; win != orig; win = win->nextp) {
/*
* If the window ends before our current position, don't need
* to do anything.
*/
if (win->begy + win->maxy <= realy)
continue;
oy = orig->cury;
for (y = realy - win->begy; y < win->maxy; y++, oy++)
win->lines[y]->line =
&orig->lines[oy]->line[win->ch_off];
}
}