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touchwin.c revision 1.9 
      1 /*	$NetBSD: touchwin.c,v 1.9 1999/04/13 14:08:19 mrg Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1981, 1993, 1994
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 #if 0
     39 static char sccsid[] = "@(#)touchwin.c	8.2 (Berkeley) 5/4/94";
     40 #else
     41 __RCSID("$NetBSD: touchwin.c,v 1.9 1999/04/13 14:08:19 mrg Exp $");
     42 #endif
     43 #endif				/* not lint */
     44 
     45 #include "curses.h"
     46 
     47 /*
     48  * touchline --
     49  *	Touch a given line.
     50  */
     51 int
     52 touchline(win, y, sx, ex)
     53 	WINDOW *win;
     54 	int     y, sx, ex;
     55 {
     56 	return (__touchline(win, y, sx, ex, 1));
     57 }
     58 
     59 
     60 /*
     61  * touchwin --
     62  *	Make it look like the whole window has been changed.
     63  */
     64 int
     65 touchwin(win)
     66 	WINDOW *win;
     67 {
     68 	int     y, maxy;
     69 
     70 #ifdef DEBUG
     71 	__CTRACE("touchwin: (%0.2o)\n", win);
     72 #endif
     73 	maxy = win->maxy;
     74 	for (y = 0; y < maxy; y++)
     75 		__touchline(win, y, 0, (int) win->maxx - 1, 1);
     76 	return (OK);
     77 }
     78 
     79 
     80 int
     81 __touchwin(win)
     82 	WINDOW *win;
     83 {
     84 	int     y, maxy;
     85 
     86 #ifdef DEBUG
     87 	__CTRACE("touchwin: (%0.2o)\n", win);
     88 #endif
     89 	maxy = win->maxy;
     90 	for (y = 0; y < maxy; y++)
     91 		__touchline(win, y, 0, (int) win->maxx - 1, 0);
     92 	return (OK);
     93 }
     94 
     95 int
     96 __touchline(win, y, sx, ex, force)
     97 	WINDOW *win;
     98 	int     y, sx, ex;
     99 	int     force;
    100 {
    101 #ifdef DEBUG
    102 	__CTRACE("touchline: (%0.2o, %d, %d, %d, %d)\n", win, y, sx, ex, force);
    103 	__CTRACE("touchline: first = %d, last = %d\n",
    104 	    *win->lines[y]->firstchp, *win->lines[y]->lastchp);
    105 #endif
    106 	if (force)
    107 		win->lines[y]->flags |= __FORCEPAINT;
    108 	sx += win->ch_off;
    109 	ex += win->ch_off;
    110 	if (!(win->lines[y]->flags & __ISDIRTY)) {
    111 		win->lines[y]->flags |= __ISDIRTY;
    112 		*win->lines[y]->firstchp = sx;
    113 		*win->lines[y]->lastchp = ex;
    114 	} else {
    115 		if (*win->lines[y]->firstchp > sx)
    116 			*win->lines[y]->firstchp = sx;
    117 		if (*win->lines[y]->lastchp < ex)
    118 			*win->lines[y]->lastchp = ex;
    119 	}
    120 #ifdef DEBUG
    121 	__CTRACE("touchline: first = %d, last = %d\n",
    122 	    *win->lines[y]->firstchp, *win->lines[y]->lastchp);
    123 #endif
    124 	return (OK);
    125 }
    126