Annotation of src/usr.bin/window/wwadd.c, Revision 1.6
1.6 ! millert 1: /* $OpenBSD: wwadd.c,v 1.5 2001/11/19 19:02:18 mpech Exp $ */
1.2 niklas 2: /* $NetBSD: wwadd.c,v 1.4 1996/02/08 21:48:56 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.
1.6 ! millert 19: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 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:
36: #ifndef lint
37: #if 0
38: static char sccsid[] = "@(#)wwadd.c 8.1 (Berkeley) 6/6/93";
39: #else
1.6 ! millert 40: static char rcsid[] = "$OpenBSD: wwadd.c,v 1.5 2001/11/19 19:02:18 mpech Exp $";
1.1 deraadt 41: #endif
42: #endif /* not lint */
43:
44: #include "ww.h"
45:
46: /*
47: * Stick w1 behind w2.
48: */
49: wwadd(w1, w2)
1.5 mpech 50: struct ww *w1;
1.1 deraadt 51: struct ww *w2;
52: {
1.5 mpech 53: int i;
54: struct ww *w;
1.1 deraadt 55:
56: w1->ww_order = w2->ww_order + 1;
57: w1->ww_back = w2;
58: w1->ww_forw = w2->ww_forw;
59: w2->ww_forw->ww_back = w1;
60: w2->ww_forw = w1;
61:
62: for (w = w1->ww_forw; w != &wwhead; w = w->ww_forw)
63: w->ww_order++;
64: for (i = w1->ww_i.t; i < w1->ww_i.b; i++) {
1.5 mpech 65: int j;
66: unsigned char *smap = wwsmap[i];
67: char *win = w1->ww_win[i];
1.1 deraadt 68: union ww_char *ns = wwns[i];
69: union ww_char *buf = w1->ww_buf[i];
70: int nvis = 0;
71: int nchanged = 0;
72:
73: for (j = w1->ww_i.l; j < w1->ww_i.r; j++) {
74: w = wwindex[smap[j]];
75: if (w1->ww_order > w->ww_order)
76: continue;
77: if (win[j] & WWM_GLS)
78: continue;
79: if (w != &wwnobody && w->ww_win[i][j] == 0)
80: w->ww_nvis[i]--;
81: smap[j] = w1->ww_index;
82: if (win[j] == 0)
83: nvis++;
84: ns[j].c_w = buf[j].c_w ^ win[j] << WWC_MSHIFT;
85: nchanged++;
86: }
87: if (nchanged > 0)
88: wwtouched[i] |= WWU_TOUCHED;
89: w1->ww_nvis[i] = nvis;
90: }
91: }