BSD 4_4_Lite2 release

[unix-history] / usr / src / lib / libcurses / touchwin.c

/*
* Copyright (c) 1981, 1993, 1994
*      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[] = "@(#)touchwin.c  8.2 (Berkeley) 5/4/94";
#endif /* not lint */

#include "curses.h"

/*
* touchline --
*      Touch a given line.
*/
int
touchline(win, y, sx, ex)
       WINDOW *win;
       register int y, sx, ex;
{
       return (__touchline(win, y, sx, ex, 1));
}


/*
* touchwin --
*      Make it look like the whole window has been changed.
*/
int
touchwin(win)
       register WINDOW *win;
{
       register int y, maxy;

#ifdef DEBUG
       __CTRACE("touchwin: (%0.2o)\n", win);
#endif
       maxy = win->maxy;
       for (y = 0; y < maxy; y++)
               __touchline(win, y, 0, win->maxx - 1, 1);
       return (OK);
}


int
__touchwin(win)
       register WINDOW *win;
{
       register int y, maxy;

#ifdef DEBUG
       __CTRACE("touchwin: (%0.2o)\n", win);
#endif
       maxy = win->maxy;
       for (y = 0; y < maxy; y++)
               __touchline(win, y, 0, win->maxx - 1, 0);
       return (OK);
}

int
__touchline(win, y, sx, ex, force)
       register WINDOW *win;
       register int y, sx, ex;
       int force;
{
#ifdef DEBUG
       __CTRACE("touchline: (%0.2o, %d, %d, %d, %d)\n", win, y, sx, ex, force);
       __CTRACE("touchline: first = %d, last = %d\n",
           *win->lines[y]->firstchp, *win->lines[y]->lastchp);
#endif
       if (force)
               win->lines[y]->flags |= __FORCEPAINT;
       sx += win->ch_off;
       ex += win->ch_off;
       if (!(win->lines[y]->flags & __ISDIRTY)) {
               win->lines[y]->flags |= __ISDIRTY;
               *win->lines[y]->firstchp = sx;
               *win->lines[y]->lastchp = ex;
       } else {
               if (*win->lines[y]->firstchp > sx)
                       *win->lines[y]->firstchp = sx;
               if (*win->lines[y]->lastchp < ex)
                       *win->lines[y]->lastchp = ex;
       }
#ifdef DEBUG
       __CTRACE("touchline: first = %d, last = %d\n",
           *win->lines[y]->firstchp, *win->lines[y]->lastchp);
#endif
       return (OK);
}