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
  37 #ifndef lint
  38 static char sccsid[] = "@(#)wwmove.c    8.1 (Berkeley) 6/6/93";
  39 static char rcsid[] =
  40   "$FreeBSD$";
  41 #endif /* not lint */
  42
  43 #include "ww.h"
  44
  45 /*
  46  * Move a window.  Should be unattached.
  47  */
  48 wwmove(w, row, col)
  49 register struct ww *w;
  50 {
  51         register dr, dc;
  52         register i;
  53
  54         dr = row - w->ww_w.t;
  55         dc = col - w->ww_w.l;
  56
  57         w->ww_w.t += dr;
  58         w->ww_w.b += dr;
  59         w->ww_w.l += dc;
  60         w->ww_w.r += dc;
  61
  62         w->ww_b.t += dr;
  63         w->ww_b.b += dr;
  64         w->ww_b.l += dc;
  65         w->ww_b.r += dc;
  66
  67         w->ww_i.t = MAX(w->ww_w.t, 0);
  68         w->ww_i.b = MIN(w->ww_w.b, wwnrow);
  69         w->ww_i.nr = w->ww_i.b - w->ww_i.t;
  70         w->ww_i.l = MAX(w->ww_w.l, 0);
  71         w->ww_i.r = MIN(w->ww_w.r, wwncol);
  72         w->ww_i.nc = w->ww_i.r - w->ww_i.l;
  73
  74         w->ww_cur.r += dr;
  75         w->ww_cur.c += dc;
  76
  77         w->ww_win -= dr;
  78         for (i = w->ww_w.t; i < w->ww_w.b; i++)
  79                 w->ww_win[i] -= dc;
  80         if (w->ww_fmap != 0) {
  81                 w->ww_fmap -= dr;
  82                 for (i = w->ww_w.t; i < w->ww_w.b; i++)
  83                         w->ww_fmap[i] -= dc;
  84         }
  85         w->ww_nvis -= dr;
  86         for (i = w->ww_i.t; i < w->ww_i.b; i++) {
  87                 register j = w->ww_i.l;
  88                 register char *win = &w->ww_win[i][j];
  89                 register char *smap = &wwsmap[i][j];
  90                 int nvis = 0;
  91
  92                 for (; j < w->ww_i.r; j++, win++, smap++)
  93                         if (*win == 0 && *smap == w->ww_index)
  94                                 nvis++;
  95                 w->ww_nvis[i] = nvis;
  96         }
  97         w->ww_buf -= dr;
  98         for (i = w->ww_b.t; i < w->ww_b.b; i++)
  99                 w->ww_buf[i] -= dc;
 100 }