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      1 /*
      2  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
      3  * Use is subject to license terms.
      4  */
      5 
      6 /*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
      7 /*	  All Rights Reserved  	*/
      8 
      9 /*
     10  * Copyright (c) 1980 Regents of the University of California.
     11  * All rights reserved.  The Berkeley software License Agreement
     12  * specifies the terms and conditions for redistribution.
     13  */
     14 
     15 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     16 
     17 /*LINTLIBRARY*/
     18 
     19 #ifndef lint
     20 static char
     21 sccsid[] = "@(#)touchwin.c 1.6 88/02/08 SMI"; /* from UCB 5.1 85/06/07 */
     22 #endif	/* not lint */
     23 
     24 #include	"curses.ext"
     25 
     26 /*
     27  * make it look like the whole window has been changed.
     28  *
     29  */
     30 
     31 int
     32 touchwin(WINDOW *win)
     33 {
     34 	int	y, maxy;
     35 
     36 #ifdef	DEBUG
     37 	fprintf(outf, "TOUCHWIN(%0.2o)\n", win);
     38 #endif
     39 	maxy = win->_maxy;
     40 	for (y = 0; y < maxy; y++)
     41 		(void) touchline(win, y, 0, win->_maxx - 1);
     42 	return (OK);
     43 }
     44 
     45 /*
     46  * touch a given line
     47  */
     48 
     49 int
     50 touchline(WINDOW *win, int y, int sx, int ex)
     51 {
     52 #ifdef DEBUG
     53 	fprintf(outf, "TOUCHLINE(%0.2o, %d, %d, %d)\n", win, y, sx, ex);
     54 	fprintf(outf, "TOUCHLINE:first = %d, last = %d\n",
     55 	    win->_firstch[y], win->_lastch[y]);
     56 #endif
     57 	sx += win->_ch_off;
     58 	ex += win->_ch_off;
     59 	if (win->_firstch[y] == _NOCHANGE) {
     60 		win->_firstch[y] = (short)sx;
     61 		win->_lastch[y] = (short)ex;
     62 	} else {
     63 		if (win->_firstch[y] > sx)
     64 			win->_firstch[y] = (short)sx;
     65 		if (win->_lastch[y] < ex)
     66 			win->_lastch[y] = (short)ex;
     67 	}
     68 #ifdef	DEBUG
     69 	fprintf(outf, "TOUCHLINE:first = %d, last = %d\n",
     70 	    win->_firstch[y], win->_lastch[y]);
     71 #endif
     72 	return (OK);
     73 }
     74