text: /*	$OpenBSD: touchwin.c,v 1.3 2005/08/14 17:15:19 espie Exp $ */
  /*
   * 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. 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.
   */
  
  #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);
  }
  
  
  