xref: /original-bsd/lib/libcurses/deleteln.c (revision a141c157)
1 /*
2  * Copyright (c) 1981 Regents of the University of California.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms are permitted
6  * provided that the above copyright notice and this paragraph are
7  * duplicated in all such forms and that any documentation,
8  * advertising materials, and other materials related to such
9  * distribution and use acknowledge that the software was developed
10  * by the University of California, Berkeley.  The name of the
11  * University may not be used to endorse or promote products derived
12  * from this software without specific prior written permission.
13  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
14  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
15  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
16  */
17 
18 #ifndef lint
19 static char sccsid[] = "@(#)deleteln.c	5.3 (Berkeley) 06/30/88";
20 #endif /* not lint */
21 
22 # include	"curses.ext"
23 
24 /*
25  *	This routine deletes a line from the screen.  It leaves
26  * (_cury,_curx) unchanged.
27  *
28  */
29 wdeleteln(win)
30 reg WINDOW	*win;
31 {
32 	reg char	*temp;
33 	reg int		y;
34 	reg char	*end;
35 	reg int		x;
36 
37 # ifdef DEBUG
38 	fprintf(outf, "DELETELN(%0.2o)\n", win);
39 # endif
40 	temp = win->_y[win->_cury];
41 	for (y = win->_cury; y < win->_maxy - 1; y++) {
42 		if (win->_orig == NULL)
43 			win->_y[y] = win->_y[y + 1];
44 		else
45 			bcopy(win->_y[y + 1], win->_y[y], win->_maxx);
46 		touchline(win, y, 0, win->_maxx - 1);
47 	}
48 	if (win->_orig == NULL)
49 		win->_y[y] = temp;
50 	else
51 		temp = win->_y[y];
52 	for (end = &temp[win->_maxx]; temp < end; )
53 		*temp++ = ' ';
54 	touchline(win, win->_cury, 0, win->_maxx - 1);
55 	if (win->_orig == NULL)
56 		_id_subwins(win);
57 	return OK;
58 }
59