1 /* $OpenBSD: cmd5.c,v 1.5 2003/06/03 02:56:23 millert Exp $ */
2 /* $NetBSD: cmd5.c,v 1.3 1995/09/28 10:34:09 tls Exp $ */
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. Neither the name of the University nor the names of its contributors
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[] = "@(#)cmd5.c 8.1 (Berkeley) 6/6/93";
39 #else
40 static char rcsid[] = "$OpenBSD: cmd5.c,v 1.5 2003/06/03 02:56:23 millert Exp $";
41 #endif
42 #endif /* not lint */
43
44 #include "defs.h"
45
46 /*
47 * Window movement.
48 */
49
50 c_move(w)
51 struct ww *w;
52 {
53 int col, row;
54 int mincol, minrow;
55 int maxcol, maxrow;
56 int curcol, currow;
57
58 if (!terse)
59 wwputs("New window position: ", cmdwin);
60 col = w->ww_w.l;
61 row = w->ww_w.t;
62 wwadd(boxwin, framewin->ww_back);
63 for (;;) {
64 wwbox(boxwin, row - 1, col - 1, w->ww_w.nr + 2, w->ww_w.nc + 2);
65 getminmax(row, w->ww_w.nr, 1, wwnrow,
66 &currow, &minrow, &maxrow);
67 getminmax(col, w->ww_w.nc, 0, wwncol,
68 &curcol, &mincol, &maxcol);
69 wwsetcursor(currow, curcol);
70 while (wwpeekc() < 0)
71 wwiomux();
72 switch (getpos(&row, &col, minrow, mincol, maxrow, maxcol)) {
73 case 3:
74 wwunbox(boxwin);
75 wwdelete(boxwin);
76 return;
77 case 2:
78 wwunbox(boxwin);
79 break;
80 case 1:
81 wwunbox(boxwin);
82 case 0:
83 continue;
84 }
85 break;
86 }
87 wwdelete(boxwin);
88 if (!terse)
89 wwputc('\n', cmdwin);
90 wwcurtowin(cmdwin);
91 movewin(w, row, col);
92 }
93
94 movewin(w, row, col)
95 struct ww *w;
96 {
97 struct ww *back = w->ww_back;
98
99 w->ww_alt.t = w->ww_w.t;
100 w->ww_alt.l = w->ww_w.l;
101 wwdelete(w);
102 wwmove(w, row, col);
103 wwadd(w, back);
104 reframe();
105 }
106
107 /*
108 * Weird stufff, don't ask.
109 */
getminmax(x,n,a,b,curx,minx,maxx)110 getminmax(x, n, a, b, curx, minx, maxx)
111 int x, n, a, b;
112 int *curx, *minx, *maxx;
113 {
114 if (x < 0)
115 *curx = x + n - 1;
116 else
117 *curx = x;
118
119 if (x <= a)
120 *minx = 1 - n;
121 else if (x <= b - n)
122 *minx = a;
123 else
124 *minx = b - n;
125
126 if (x >= b - n)
127 *maxx = b - 1;
128 else if (x >= a)
129 *maxx = b - n;
130 else
131 *maxx = a;
132 }
133