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touchwin.c revision 1.6.2.2 
      1 /*
      2  * Copyright (c) 1981, 1993, 1994
      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 static char sccsid[] = "@(#)touchwin.c	8.2 (Berkeley) 5/4/94";
     36 #endif /* not lint */
     37 
     38 #include "curses.h"
     39 
     40 /*
     41  * touchline --
     42  *	Touch a given line.
     43  */
     44 int
     45 touchline(win, y, sx, ex)
     46 	WINDOW *win;
     47 	register int y, sx, ex;
     48 {
     49 	return (__touchline(win, y, sx, ex, 1));
     50 }
     51 
     52 
     53 /*
     54  * touchwin --
     55  *	Make it look like the whole window has been changed.
     56  */
     57 int
     58 touchwin(win)
     59 	register WINDOW *win;
     60 {
     61 	register int y, maxy;
     62 
     63 #ifdef DEBUG
     64 	__CTRACE("touchwin: (%0.2o)\n", win);
     65 #endif
     66 	maxy = win->maxy;
     67 	for (y = 0; y < maxy; y++)
     68 		__touchline(win, y, 0, win->maxx - 1, 1);
     69 	return (OK);
     70 }
     71 
     72 
     73 int
     74 __touchwin(win)
     75 	register WINDOW *win;
     76 {
     77 	register int y, maxy;
     78 
     79 #ifdef DEBUG
     80 	__CTRACE("touchwin: (%0.2o)\n", win);
     81 #endif
     82 	maxy = win->maxy;
     83 	for (y = 0; y < maxy; y++)
     84 		__touchline(win, y, 0, win->maxx - 1, 0);
     85 	return (OK);
     86 }
     87 
     88 int
     89 __touchline(win, y, sx, ex, force)
     90 	register WINDOW *win;
     91 	register int y, sx, ex;
     92 	int force;
     93 {
     94 #ifdef DEBUG
     95 	__CTRACE("touchline: (%0.2o, %d, %d, %d, %d)\n", win, y, sx, ex, force);
     96 	__CTRACE("touchline: first = %d, last = %d\n",
     97 	    *win->lines[y]->firstchp, *win->lines[y]->lastchp);
     98 #endif
     99 	if (force)
    100 		win->lines[y]->flags |= __FORCEPAINT;
    101 	sx += win->ch_off;
    102 	ex += win->ch_off;
    103 	if (!(win->lines[y]->flags & __ISDIRTY)) {
    104 		win->lines[y]->flags |= __ISDIRTY;
    105 		*win->lines[y]->firstchp = sx;
    106 		*win->lines[y]->lastchp = ex;
    107 	} else {
    108 		if (*win->lines[y]->firstchp > sx)
    109 			*win->lines[y]->firstchp = sx;
    110 		if (*win->lines[y]->lastchp < ex)
    111 			*win->lines[y]->lastchp = ex;
    112 	}
    113 #ifdef DEBUG
    114 	__CTRACE("touchline: first = %d, last = %d\n",
    115 	    *win->lines[y]->firstchp, *win->lines[y]->lastchp);
    116 #endif
    117 	return (OK);
    118 }
    119 
    120 
    121