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touchwin.c revision 1.11 
      1 /*	$NetBSD: touchwin.c,v 1.11 2000/04/15 13:17:05 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 1.11 2000/04/15 13:17:05 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(WINDOW *win, int start, int count)
     55 {
     56 	int y;
     57 
     58 	for (y = start; y < start + count; y++) {
     59 		__touchline(win, y, 0, (int) win->maxx - 1, 1);
     60 	}
     61 
     62 	return OK;
     63 }
     64 
     65 /*
     66  * touchwin --
     67  *	Make it look like the whole window has been changed.
     68  */
     69 int
     70 touchwin(WINDOW *win)
     71 {
     72 	int     y, maxy;
     73 
     74 #ifdef DEBUG
     75 	__CTRACE("touchwin: (%0.2o)\n", win);
     76 #endif
     77 	maxy = win->maxy;
     78 	for (y = 0; y < maxy; y++)
     79 		__touchline(win, y, 0, (int) win->maxx - 1, 1);
     80 	return (OK);
     81 }
     82 
     83 
     84 int
     85 __touchwin(WINDOW *win)
     86 {
     87 	int     y, maxy;
     88 
     89 #ifdef DEBUG
     90 	__CTRACE("touchwin: (%0.2o)\n", win);
     91 #endif
     92 	maxy = win->maxy;
     93 	for (y = 0; y < maxy; y++)
     94 		__touchline(win, y, 0, (int) win->maxx - 1, 0);
     95 	return (OK);
     96 }
     97 
     98 int
     99 __touchline(WINDOW *win, int y, int sx, int ex, 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