usr.bin/window/cmd5.c

   1 /*      $NetBSD: cmd5.c,v 1.6 2002/06/14 01:06:52 wiz 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. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #include <sys/cdefs.h>
  36 #ifndef lint
  37 #if 0
  38 static char sccsid[] = "@(#)cmd5.c      8.1 (Berkeley) 6/6/93";
  39 #else
  40 __RCSID("$NetBSD: cmd5.c,v 1.6 2002/06/14 01:06:52 wiz Exp $");
  41 #endif
  42 #endif /* not lint */
  43
  44 #include "defs.h"
  45
  46 /*
  47  * Window movement.
  48  */
  49
  50 void    getminmax(int, int, int, int, int *, int *, int *);
  51
  52 void
  53 c_move(struct ww *w)
  54 {
  55         int col, row;
  56         int mincol, minrow;
  57         int maxcol, maxrow;
  58         int curcol, currow;
  59
  60         if (!terse)
  61                 wwputs("New window position: ", cmdwin);
  62         col = w->ww_w.l;
  63         row = w->ww_w.t;
  64         wwadd(boxwin, framewin->ww_back);
  65         for (;;) {
  66                 wwbox(boxwin, row - 1, col - 1, w->ww_w.nr + 2, w->ww_w.nc + 2);
  67                 getminmax(row, w->ww_w.nr, 1, wwnrow,
  68                         &currow, &minrow, &maxrow);
  69                 getminmax(col, w->ww_w.nc, 0, wwncol,
  70                         &curcol, &mincol, &maxcol);
  71                 wwsetcursor(currow, curcol);
  72                 while (wwpeekc() < 0)
  73                         wwiomux();
  74                 switch (getpos(&row, &col, minrow, mincol, maxrow, maxcol)) {
  75                 case 3:
  76                         wwunbox(boxwin);
  77                         wwdelete(boxwin);
  78                         return;
  79                 case 2:
  80                         wwunbox(boxwin);
  81                         break;
  82                 case 1:
  83                         wwunbox(boxwin);
  84                 case 0:
  85                         continue;
  86                 }
  87                 break;
  88         }
  89         wwdelete(boxwin);
  90         if (!terse)
  91                 wwputc('\n', cmdwin);
  92         wwcurtowin(cmdwin);
  93         movewin(w, row, col);
  94 }
  95
  96 void
  97 movewin(struct ww *w, int row, int col)
  98 {
  99         struct ww *back = w->ww_back;
 100
 101         w->ww_alt.t = w->ww_w.t;
 102         w->ww_alt.l = w->ww_w.l;
 103         wwdelete(w);
 104         wwmove(w, row, col);
 105         wwadd(w, back);
 106         reframe();
 107 }
 108
 109 /*
 110  * Weird stufff, don't ask.
 111  */
 112 void
 113 getminmax(int x, int n, int a, int b, int *curx, int *minx, int *maxx)
 114 {
 115         if (x < 0)
 116                 *curx = x + n - 1;
 117         else
 118                 *curx = x;
 119
 120         if (x <= a)
 121                 *minx = 1 - n;
 122         else if (x <= b - n)
 123                 *minx = a;
 124         else
 125                 *minx = b - n;
 126
 127         if (x >= b - n)
 128                 *maxx = b - 1;
 129         else if (x >= a)
 130                 *maxx = b - n;
 131         else
 132                 *maxx = a;
 133 }