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touchwin.c revision 1.10 
      1 /*	$NetBSD: touchwin.c,v 1.10 2000/04/11 13:57:10 blymn 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 1.10 2000/04/11 13:57:10 blymn Exp $");
     42 #endif
     43 #endif				/* not lint */
     44 
     45 #include "curses.h"
     46 #include "curses_private.h"
     47 
     48 /*
     49  * Touch count lines starting at start.  This is the SUS v2 compliant
     50  * version.
     51  */
     52 
     53 int
     54 touchline(win, start, count)
     55 	WINDOW *win;
     56 	int     start, count;
     57 {
     58 	int y;
     59 
     60 	for (y = start; y < start + count; y++) {
     61 		__touchline(win, y, 0, (int) win->maxx - 1, 1);
     62 	}
     63 
     64 	return OK;
     65 }
     66 
     67 /*
     68  * touchwin --
     69  *	Make it look like the whole window has been changed.
     70  */
     71 int
     72 touchwin(win)
     73 	WINDOW *win;
     74 {
     75 	int     y, maxy;
     76 
     77 #ifdef DEBUG
     78 	__CTRACE("touchwin: (%0.2o)\n", win);
     79 #endif
     80 	maxy = win->maxy;
     81 	for (y = 0; y < maxy; y++)
     82 		__touchline(win, y, 0, (int) win->maxx - 1, 1);
     83 	return (OK);
     84 }
     85 
     86 
     87 int
     88 __touchwin(win)
     89 	WINDOW *win;
     90 {
     91 	int     y, maxy;
     92 
     93 #ifdef DEBUG
     94 	__CTRACE("touchwin: (%0.2o)\n", win);
     95 #endif
     96 	maxy = win->maxy;
     97 	for (y = 0; y < maxy; y++)
     98 		__touchline(win, y, 0, (int) win->maxx - 1, 0);
     99 	return (OK);
    100 }
    101 
    102 int
    103 __touchline(win, y, sx, ex, force)
    104 	WINDOW *win;
    105 	int     y, sx, ex;
    106 	int     force;
    107 {
    108 #ifdef DEBUG
    109 	__CTRACE("touchline: (%0.2o, %d, %d, %d, %d)\n", win, y, sx, ex, force);
    110 	__CTRACE("touchline: first = %d, last = %d\n",
    111 	    *win->lines[y]->firstchp, *win->lines[y]->lastchp);
    112 #endif
    113 	if (force)
    114 		win->lines[y]->flags |= __FORCEPAINT;
    115 	sx += win->ch_off;
    116 	ex += win->ch_off;
    117 	if (!(win->lines[y]->flags & __ISDIRTY)) {
    118 		win->lines[y]->flags |= __ISDIRTY;
    119 		*win->lines[y]->firstchp = sx;
    120 		*win->lines[y]->lastchp = ex;
    121 	} else {
    122 		if (*win->lines[y]->firstchp > sx)
    123 			*win->lines[y]->firstchp = sx;
    124 		if (*win->lines[y]->lastchp < ex)
    125 			*win->lines[y]->lastchp = ex;
    126 	}
    127 #ifdef DEBUG
    128 	__CTRACE("touchline: first = %d, last = %d\n",
    129 	    *win->lines[y]->firstchp, *win->lines[y]->lastchp);
    130 #endif
    131 	return (OK);
    132 }
    133