window/cmd5.c

   1 /*      $NetBSD: cmd5.c,v 1.5 1998/07/09 18:34:39 msaitoh 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 #include <sys/cdefs.h>
  40 #ifndef lint
  41 #if 0
  42 static char sccsid[] = "@(#)cmd5.c      8.1 (Berkeley) 6/6/93";
  43 #else
  44 __RCSID("$NetBSD: cmd5.c,v 1.5 1998/07/09 18:34:39 msaitoh Exp $");
  45 #endif
  46 #endif /* not lint */
  47
  48 #include "defs.h"
  49
  50 /*
  51  * Window movement.
  52  */
  53
  54 void    getminmax __P((int, int, int, int, int *, int *, int *));
  55
  56 void
  57 c_move(w)
  58         struct ww *w;
  59 {
  60         int col, row;
  61         int mincol, minrow;
  62         int maxcol, maxrow;
  63         int curcol, currow;
  64
  65         if (!terse)
  66                 wwputs("New window position: ", cmdwin);
  67         col = w->ww_w.l;
  68         row = w->ww_w.t;
  69         wwadd(boxwin, framewin->ww_back);
  70         for (;;) {
  71                 wwbox(boxwin, row - 1, col - 1, w->ww_w.nr + 2, w->ww_w.nc + 2);
  72                 getminmax(row, w->ww_w.nr, 1, wwnrow,
  73                         &currow, &minrow, &maxrow);
  74                 getminmax(col, w->ww_w.nc, 0, wwncol,
  75                         &curcol, &mincol, &maxcol);
  76                 wwsetcursor(currow, curcol);
  77                 while (wwpeekc() < 0)
  78                         wwiomux();
  79                 switch (getpos(&row, &col, minrow, mincol, maxrow, maxcol)) {
  80                 case 3:
  81                         wwunbox(boxwin);
  82                         wwdelete(boxwin);
  83                         return;
  84                 case 2:
  85                         wwunbox(boxwin);
  86                         break;
  87                 case 1:
  88                         wwunbox(boxwin);
  89                 case 0:
  90                         continue;
  91                 }
  92                 break;
  93         }
  94         wwdelete(boxwin);
  95         if (!terse)
  96                 wwputc('\n', cmdwin);
  97         wwcurtowin(cmdwin);
  98         movewin(w, row, col);
  99 }
 100
 101 void
 102 movewin(w, row, col)
 103         struct ww *w;
 104         int row, col;
 105 {
 106         struct ww *back = w->ww_back;
 107
 108         w->ww_alt.t = w->ww_w.t;
 109         w->ww_alt.l = w->ww_w.l;
 110         wwdelete(w);
 111         wwmove(w, row, col);
 112         wwadd(w, back);
 113         reframe();
 114 }
 115
 116 /*
 117  * Weird stufff, don't ask.
 118  */
 119 void
 120 getminmax(x, n, a, b, curx, minx, maxx)
 121         int x, n, a, b;
 122         int *curx, *minx, *maxx;
 123 {
 124         if (x < 0)
 125                 *curx = x + n - 1;
 126         else
 127                 *curx = x;
 128
 129         if (x <= a)
 130                 *minx = 1 - n;
 131         else if (x <= b - n)
 132                 *minx = a;
 133         else
 134                 *minx = b - n;
 135
 136         if (x >= b - n)
 137                 *maxx = b - 1;
 138         else if (x >= a)
 139                 *maxx = b - n;
 140         else
 141                 *maxx = a;
 142 }