Annotation of src/usr.bin/window/wwredrawwin.c, Revision 1.1.1.1
1.1 deraadt 1: /* $NetBSD: wwredrawwin.c,v 1.3 1995/09/28 10:35:50 tls Exp $ */
2:
3: /*
4: * Copyright (c) 1983, 1993
5: * The Regents of the University of California. All rights reserved.
6: *
7: * This code is derived from software contributed to Berkeley by
8: * Edward Wang at The University of California, Berkeley.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: * 3. All advertising materials mentioning features or use of this software
19: * must display the following acknowledgement:
20: * This product includes software developed by the University of
21: * California, Berkeley and its contributors.
22: * 4. Neither the name of the University nor the names of its contributors
23: * may be used to endorse or promote products derived from this software
24: * without specific prior written permission.
25: *
26: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36: * SUCH DAMAGE.
37: */
38:
39: #ifndef lint
40: #if 0
41: static char sccsid[] = "@(#)wwredrawwin.c 8.1 (Berkeley) 6/6/93";
42: #else
43: static char rcsid[] = "$NetBSD: wwredrawwin.c,v 1.3 1995/09/28 10:35:50 tls Exp $";
44: #endif
45: #endif /* not lint */
46:
47: #include "ww.h"
48:
49: wwredrawwin1(w, row1, row2, offset)
50: register struct ww *w;
51: int row1, row2, offset;
52: {
53: int row;
54: register col;
55: register char *smap;
56: register union ww_char *buf;
57: register char *win;
58: register union ww_char *ns;
59: int x;
60: int nchanged;
61:
62: for (row = row1; row < row2; row++) {
63: col = w->ww_i.l;
64: ns = wwns[row];
65: smap = &wwsmap[row][col];
66: buf = w->ww_buf[row + offset];
67: win = w->ww_win[row];
68: nchanged = 0;
69: for (; col < w->ww_i.r; col++)
70: if (*smap++ == w->ww_index &&
71: ns[col].c_w !=
72: (x = buf[col].c_w ^ win[col] << WWC_MSHIFT)) {
73: nchanged++;
74: ns[col].c_w = x;
75: }
76: if (nchanged > 0)
77: wwtouched[row] |= WWU_TOUCHED;
78: }
79: }