NetBSD/lib/libcurses/touchwin.c

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1993-03-21 12:45:37 +03:00
/*
* Copyright (c) 1981 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[] = "@(#)touchwin.c 5.4 (Berkeley) 6/1/90";
#endif /* not lint */
# include "curses.ext"
/*
* make it look like the whole window has been changed.
*
*/
touchwin(win)
register WINDOW *win;
{
register int y, maxy;
# ifdef DEBUG
fprintf(outf, "TOUCHWIN(%0.2o)\n", win);
# endif
maxy = win->_maxy;
for (y = 0; y < maxy; y++)
touchline(win, y, 0, win->_maxx - 1);
}
/*
* touch a given line
*/
touchline(win, y, sx, ex)
register WINDOW *win;
register int y, sx, ex;
{
# ifdef DEBUG
fprintf(outf, "TOUCHLINE(%0.2o, %d, %d, %d)\n", win, y, sx, ex);
fprintf(outf, "TOUCHLINE:first = %d, last = %d\n", win->_firstch[y], win->_lastch[y]);
# endif
sx += win->_ch_off;
ex += win->_ch_off;
if (win->_firstch[y] == _NOCHANGE) {
win->_firstch[y] = sx;
win->_lastch[y] = ex;
}
else {
if (win->_firstch[y] > sx)
win->_firstch[y] = sx;
if (win->_lastch[y] < ex)
win->_lastch[y] = ex;
}
# ifdef DEBUG
fprintf(outf, "TOUCHLINE:first = %d, last = %d\n", win->_firstch[y], win->_lastch[y]);
# endif
}