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. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #ifndef lint
31 static char sccsid[] = "@(#)clrtobot.c 8.2 (Berkeley) 5/4/94";
32 #endif /* not lint */
33
34 #include "curses.h"
35
36 /*
37 * wclrtobot --
38 * Erase everything on the window.
39 */
40 int
wclrtobot(win)41 wclrtobot(win)
42 register WINDOW *win;
43 {
44 register int minx, startx, starty, y;
45 register __LDATA *sp, *end, *maxx;
46
47 if (win->lines[win->cury]->flags & __ISPASTEOL) {
48 starty = win->cury + 1;
49 startx = 0;
50 } else {
51 starty = win->cury;
52 startx = win->curx;
53 }
54 for (y = starty; y < win->maxy; y++) {
55 minx = -1;
56 end = &win->lines[y]->line[win->maxx];
57 for (sp = &win->lines[y]->line[startx]; sp < end; sp++)
58 if (sp->ch != ' ' || sp->attr != 0) {
59 maxx = sp;
60 if (minx == -1)
61 minx = sp - win->lines[y]->line;
62 sp->ch = ' ';
63 sp->attr = 0;
64 }
65 if (minx != -1)
66 __touchline(win, y, minx, maxx - win->lines[y]->line,
67 0);
68 startx = 0;
69 }
70 return (OK);
71 }
72