window(1): Remove __RCSID & friends.
[dragonfly.git] / usr.bin / window / wwredrawwin.c
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2c872e05 1/* @(#)wwredrawwin.c 8.1 (Berkeley) 6/6/93 */
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2/* $NetBSD: wwredrawwin.c,v 1.7 2003/08/07 11:17:44 agc Exp $ */
3
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4/*
5 * Copyright (c) 1983, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * Edward Wang at The University of California, Berkeley.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
abecab39 19 * 3. Neither the name of the University nor the names of its contributors
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20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
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36#include "ww.h"
37
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38void
39wwredrawwin1(struct ww *w, int row1, int row2, int offset)
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40{
41 int row;
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42 int col;
43 unsigned char *smap;
44 union ww_char *buf;
45 char *win;
46 union ww_char *ns;
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47 int x;
48 int nchanged;
49
50 for (row = row1; row < row2; row++) {
51 col = w->ww_i.l;
52 ns = wwns[row];
53 smap = &wwsmap[row][col];
54 buf = w->ww_buf[row + offset];
55 win = w->ww_win[row];
56 nchanged = 0;
57 for (; col < w->ww_i.r; col++)
58 if (*smap++ == w->ww_index &&
59 ns[col].c_w !=
60 (x = buf[col].c_w ^ win[col] << WWC_MSHIFT)) {
61 nchanged++;
62 ns[col].c_w = x;
63 }
64 if (nchanged > 0)
65 wwtouched[row] |= WWU_TOUCHED;
66 }
67}