usr.bin/window/cmd5.c

   1 /*
   2  * Copyright (c) 1983, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * Edward Wang at The University of California, Berkeley.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by the University of
  19  *      California, Berkeley and its contributors.
  20  * 4. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  *
  36  * @(#)cmd5.c   8.1 (Berkeley) 6/6/93
  37  * $FreeBSD: src/usr.bin/window/cmd5.c,v 1.1.1.1.14.1 2001/05/17 09:45:00 obrien Exp $
  38  * $DragonFly: src/usr.bin/window/cmd5.c,v 1.3 2005/04/15 19:55:29 drhodus Exp $
  39  */
  40
  41 #include "defs.h"
  42
  43 /*
  44  * Window movement.
  45  */
  46
  47 c_move(w)
  48 struct ww *w;
  49 {
  50         int col, row;
  51         int mincol, minrow;
  52         int maxcol, maxrow;
  53         int curcol, currow;
  54
  55         if (!terse)
  56                 wwputs("New window position: ", cmdwin);
  57         col = w->ww_w.l;
  58         row = w->ww_w.t;
  59         wwadd(boxwin, framewin->ww_back);
  60         for (;;) {
  61                 wwbox(boxwin, row - 1, col - 1, w->ww_w.nr + 2, w->ww_w.nc + 2);
  62                 getminmax(row, w->ww_w.nr, 1, wwnrow,
  63                         &currow, &minrow, &maxrow);
  64                 getminmax(col, w->ww_w.nc, 0, wwncol,
  65                         &curcol, &mincol, &maxcol);
  66                 wwsetcursor(currow, curcol);
  67                 while (wwpeekc() < 0)
  68                         wwiomux();
  69                 switch (getpos(&row, &col, minrow, mincol, maxrow, maxcol)) {
  70                 case 3:
  71                         wwunbox(boxwin);
  72                         wwdelete(boxwin);
  73                         return;
  74                 case 2:
  75                         wwunbox(boxwin);
  76                         break;
  77                 case 1:
  78                         wwunbox(boxwin);
  79                 case 0:
  80                         continue;
  81                 }
  82                 break;
  83         }
  84         wwdelete(boxwin);
  85         if (!terse)
  86                 wwputc('\n', cmdwin);
  87         wwcurtowin(cmdwin);
  88         movewin(w, row, col);
  89 }
  90
  91 movewin(w, row, col)
  92 struct ww *w;
  93 {
  94         struct ww *back = w->ww_back;
  95
  96         w->ww_alt.t = w->ww_w.t;
  97         w->ww_alt.l = w->ww_w.l;
  98         wwdelete(w);
  99         wwmove(w, row, col);
 100         wwadd(w, back);
 101         reframe();
 102 }
 103
 104 /*
 105  * Weird stufff, don't ask.
 106  */
 107 getminmax(x, n, a, b, curx, minx, maxx)
 108 register x, n, a, b;
 109 int *curx, *minx, *maxx;
 110 {
 111         if (x < 0)
 112                 *curx = x + n - 1;
 113         else
 114                 *curx = x;
 115
 116         if (x <= a)
 117                 *minx = 1 - n;
 118         else if (x <= b - n)
 119                 *minx = a;
 120         else
 121                 *minx = b - n;
 122
 123         if (x >= b - n)
 124                 *maxx = b - 1;
 125         else if (x >= a)
 126                 *maxx = b - n;
 127         else
 128                 *maxx = a;
 129 }