Annotation of src/usr.bin/window/wwredrawwin.c, Revision 1.3
1.3 ! deraadt 1: /* $OpenBSD: wwredrawwin.c,v 1.4 1996/02/08 21:49:15 mycroft Exp $ */
1.2 niklas 2: /* $NetBSD: wwredrawwin.c,v 1.4 1996/02/08 21:49:15 mycroft Exp $ */
1.1 deraadt 3:
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.
19: * 3. All advertising materials mentioning features or use of this software
20: * must display the following acknowledgement:
21: * This product includes software developed by the University of
22: * California, Berkeley and its contributors.
23: * 4. Neither the name of the University nor the names of its contributors
24: * may be used to endorse or promote products derived from this software
25: * without specific prior written permission.
26: *
27: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37: * SUCH DAMAGE.
38: */
39:
40: #ifndef lint
41: #if 0
42: static char sccsid[] = "@(#)wwredrawwin.c 8.1 (Berkeley) 6/6/93";
43: #else
1.3 ! deraadt 44: static char rcsid[] = "$OpenBSD: wwredrawwin.c,v 1.4 1996/02/08 21:49:15 mycroft Exp $";
1.1 deraadt 45: #endif
46: #endif /* not lint */
47:
48: #include "ww.h"
49:
50: wwredrawwin1(w, row1, row2, offset)
51: register struct ww *w;
52: int row1, row2, offset;
53: {
54: int row;
55: register col;
1.2 niklas 56: register unsigned char *smap;
1.1 deraadt 57: register union ww_char *buf;
58: register char *win;
59: register union ww_char *ns;
60: int x;
61: int nchanged;
62:
63: for (row = row1; row < row2; row++) {
64: col = w->ww_i.l;
65: ns = wwns[row];
66: smap = &wwsmap[row][col];
67: buf = w->ww_buf[row + offset];
68: win = w->ww_win[row];
69: nchanged = 0;
70: for (; col < w->ww_i.r; col++)
71: if (*smap++ == w->ww_index &&
72: ns[col].c_w !=
73: (x = buf[col].c_w ^ win[col] << WWC_MSHIFT)) {
74: nchanged++;
75: ns[col].c_w = x;
76: }
77: if (nchanged > 0)
78: wwtouched[row] |= WWU_TOUCHED;
79: }
80: }