usr.bin/window/wwmove.c

   1 /*      @(#)wwmove.c    8.1 (Berkeley) 6/6/93   */
   2 /*      $NetBSD: wwmove.c,v 1.7 2003/08/07 11:17:42 agc 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 #include "ww.h"
  37
  38 /*
  39  * Move a window.  Should be unattached.
  40  */
  41 void
  42 wwmove(struct ww *w, int row, int col)
  43 {
  44         int dr, dc;
  45         int i;
  46
  47         dr = row - w->ww_w.t;
  48         dc = col - w->ww_w.l;
  49
  50         w->ww_w.t += dr;
  51         w->ww_w.b += dr;
  52         w->ww_w.l += dc;
  53         w->ww_w.r += dc;
  54
  55         w->ww_b.t += dr;
  56         w->ww_b.b += dr;
  57         w->ww_b.l += dc;
  58         w->ww_b.r += dc;
  59
  60         w->ww_i.t = MAX(w->ww_w.t, 0);
  61         w->ww_i.b = MIN(w->ww_w.b, wwnrow);
  62         w->ww_i.nr = w->ww_i.b - w->ww_i.t;
  63         w->ww_i.l = MAX(w->ww_w.l, 0);
  64         w->ww_i.r = MIN(w->ww_w.r, wwncol);
  65         w->ww_i.nc = w->ww_i.r - w->ww_i.l;
  66
  67         w->ww_cur.r += dr;
  68         w->ww_cur.c += dc;
  69
  70         w->ww_win -= dr;
  71         for (i = w->ww_w.t; i < w->ww_w.b; i++)
  72                 w->ww_win[i] -= dc;
  73         if (w->ww_fmap != 0) {
  74                 w->ww_fmap -= dr;
  75                 for (i = w->ww_w.t; i < w->ww_w.b; i++)
  76                         w->ww_fmap[i] -= dc;
  77         }
  78         w->ww_nvis -= dr;
  79         for (i = w->ww_i.t; i < w->ww_i.b; i++) {
  80                 int j = w->ww_i.l;
  81                 char *win = &w->ww_win[i][j];
  82                 unsigned char *smap = &wwsmap[i][j];
  83                 int nvis = 0;
  84
  85                 for (; j < w->ww_i.r; j++, win++, smap++)
  86                         if (*win == 0 && *smap == w->ww_index)
  87                                 nvis++;
  88                 w->ww_nvis[i] = nvis;
  89         }
  90         w->ww_buf -= dr;
  91         for (i = w->ww_b.t; i < w->ww_b.b; i++)
  92                 w->ww_buf[i] -= dc;
  93 }