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touchwin.c revision 1.5 
      1 /*
      2  * Copyright (c) 1981, 1993
      3  *	The Regents of the University of California.  All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  */
     33 
     34 #ifndef lint
     35 /* from: static char sccsid[] = "@(#)touchwin.c	8.1 (Berkeley) 6/4/93"; */
     36 static char *rcsid = "$Id: touchwin.c,v 1.5 1993/11/09 04:08:52 cgd Exp $";
     37 #endif /* not lint */
     38 
     39 #include <curses.h>
     40 
     41 
     42 /*
     43  * touchline --
     44  *	Touch a given line.
     45  */
     46 int
     47 touchline(win, y, sx, ex)
     48 	WINDOW *win;
     49 	register int y, sx, ex;
     50 {
     51 	return (__touchline(win, y, sx, ex, 1));
     52 }
     53 
     54 
     55 /*
     56  * touchwin --
     57  *	Make it look like the whole window has been changed.
     58  */
     59 int
     60 touchwin(win)
     61 	register WINDOW *win;
     62 {
     63 	register int y, maxy;
     64 
     65 #ifdef DEBUG
     66 	__CTRACE("touchwin: (%0.2o)\n", win);
     67 #endif
     68 	maxy = win->maxy;
     69 	for (y = 0; y < maxy; y++)
     70 		__touchline(win, y, 0, win->maxx - 1, 1);
     71 	return (OK);
     72 }
     73 
     74 
     75 int
     76 __touchwin(win)
     77 	register WINDOW *win;
     78 {
     79 	register int y, maxy;
     80 
     81 #ifdef DEBUG
     82 	__CTRACE("touchwin: (%0.2o)\n", win);
     83 #endif
     84 	maxy = win->maxy;
     85 	for (y = 0; y < maxy; y++)
     86 		__touchline(win, y, 0, win->maxx - 1, 0);
     87 	return (OK);
     88 }
     89 
     90 int
     91 __touchline(win, y, sx, ex, force)
     92 	register WINDOW *win;
     93 	register int y, sx, ex;
     94 	int force;
     95 {
     96 #ifdef DEBUG
     97 	__CTRACE("touchline: (%0.2o, %d, %d, %d, %d)\n", win, y, sx, ex, force);
     98 	__CTRACE("touchline: first = %d, last = %d\n",
     99 	    *win->lines[y]->firstchp, *win->lines[y]->lastchp);
    100 #endif
    101 	if (force)
    102 		win->lines[y]->flags |= __FORCEPAINT;
    103 	sx += win->ch_off;
    104 	ex += win->ch_off;
    105 	if (!(win->lines[y]->flags & __ISDIRTY)) {
    106 		win->lines[y]->flags |= __ISDIRTY;
    107 		*win->lines[y]->firstchp = sx;
    108 		*win->lines[y]->lastchp = ex;
    109 	} else {
    110 		if (*win->lines[y]->firstchp > sx)
    111 			*win->lines[y]->firstchp = sx;
    112 		if (*win->lines[y]->lastchp < ex)
    113 			*win->lines[y]->lastchp = ex;
    114 	}
    115 #ifdef DEBUG
    116 	__CTRACE("touchline: first = %d, last = %d\n",
    117 	    *win->lines[y]->firstchp, *win->lines[y]->lastchp);
    118 #endif
    119 	return (OK);
    120 }
    121 
    122 
    123