usr.bin/window/wwmove.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  * @(#)wwmove.c 8.1 (Berkeley) 6/6/93
  37  * $FreeBSD: src/usr.bin/window/wwmove.c,v 1.1.1.1.14.1 2001/05/17 09:45:01 obrien Exp $
  38  * $DragonFly: src/usr.bin/window/wwmove.c,v 1.2 2003/06/17 04:29:34 dillon Exp $
  39  */
  40
  41 #include "ww.h"
  42
  43 /*
  44  * Move a window.  Should be unattached.
  45  */
  46 wwmove(w, row, col)
  47 register struct ww *w;
  48 {
  49         register dr, dc;
  50         register i;
  51
  52         dr = row - w->ww_w.t;
  53         dc = col - w->ww_w.l;
  54
  55         w->ww_w.t += dr;
  56         w->ww_w.b += dr;
  57         w->ww_w.l += dc;
  58         w->ww_w.r += dc;
  59
  60         w->ww_b.t += dr;
  61         w->ww_b.b += dr;
  62         w->ww_b.l += dc;
  63         w->ww_b.r += dc;
  64
  65         w->ww_i.t = MAX(w->ww_w.t, 0);
  66         w->ww_i.b = MIN(w->ww_w.b, wwnrow);
  67         w->ww_i.nr = w->ww_i.b - w->ww_i.t;
  68         w->ww_i.l = MAX(w->ww_w.l, 0);
  69         w->ww_i.r = MIN(w->ww_w.r, wwncol);
  70         w->ww_i.nc = w->ww_i.r - w->ww_i.l;
  71
  72         w->ww_cur.r += dr;
  73         w->ww_cur.c += dc;
  74
  75         w->ww_win -= dr;
  76         for (i = w->ww_w.t; i < w->ww_w.b; i++)
  77                 w->ww_win[i] -= dc;
  78         if (w->ww_fmap != 0) {
  79                 w->ww_fmap -= dr;
  80                 for (i = w->ww_w.t; i < w->ww_w.b; i++)
  81                         w->ww_fmap[i] -= dc;
  82         }
  83         w->ww_nvis -= dr;
  84         for (i = w->ww_i.t; i < w->ww_i.b; i++) {
  85                 register j = w->ww_i.l;
  86                 register char *win = &w->ww_win[i][j];
  87                 register char *smap = &wwsmap[i][j];
  88                 int nvis = 0;
  89
  90                 for (; j < w->ww_i.r; j++, win++, smap++)
  91                         if (*win == 0 && *smap == w->ww_index)
  92                                 nvis++;
  93                 w->ww_nvis[i] = nvis;
  94         }
  95         w->ww_buf -= dr;
  96         for (i = w->ww_b.t; i < w->ww_b.b; i++)
  97                 w->ww_buf[i] -= dc;
  98 }