4.3BSD - /usr/src/ucb/window/wwmove.c

   1: #ifndef lint
   2: static char sccsid[] = "@(#)wwmove.c	3.7 4/24/85";
   3: #endif
   4: 
   5: /*
   6:  * Copyright (c) 1983 Regents of the University of California,
   7:  * All rights reserved.  Redistribution permitted subject to
   8:  * the terms of the Berkeley Software License Agreement.
   9:  */
  10: 
  11: #include "ww.h"
  12: 
  13: /*
  14:  * Move a window.  Should be unattached.
  15:  */
  16: wwmove(w, row, col)
  17: register struct ww *w;
  18: {
  19:     register dr, dc;
  20:     register i;
  21: 
  22:     dr = row - w->ww_w.t;
  23:     dc = col - w->ww_w.l;
  24: 
  25:     w->ww_w.t += dr;
  26:     w->ww_w.b += dr;
  27:     w->ww_w.l += dc;
  28:     w->ww_w.r += dc;
  29: 
  30:     w->ww_b.t += dr;
  31:     w->ww_b.b += dr;
  32:     w->ww_b.l += dc;
  33:     w->ww_b.r += dc;
  34: 
  35:     w->ww_i.t = MAX(w->ww_w.t, 0);
  36:     w->ww_i.b = MIN(w->ww_w.b, wwnrow);
  37:     w->ww_i.nr = w->ww_i.b - w->ww_i.t;
  38:     w->ww_i.l = MAX(w->ww_w.l, 0);
  39:     w->ww_i.r = MIN(w->ww_w.r, wwncol);
  40:     w->ww_i.nc = w->ww_i.r - w->ww_i.l;
  41: 
  42:     w->ww_cur.r += dr;
  43:     w->ww_cur.c += dc;
  44: 
  45:     w->ww_win -= dr;
  46:     for (i = w->ww_w.t; i < w->ww_w.b; i++)
  47:         w->ww_win[i] -= dc;
  48:     if (w->ww_fmap != 0) {
  49:         w->ww_fmap -= dr;
  50:         for (i = w->ww_w.t; i < w->ww_w.b; i++)
  51:             w->ww_fmap[i] -= dc;
  52:     }
  53:     w->ww_nvis -= dr;
  54:     for (i = w->ww_i.t; i < w->ww_i.b; i++) {
  55:         register j = w->ww_i.l;
  56:         register char *win = &w->ww_win[i][j];
  57:         register char *smap = &wwsmap[i][j];
  58:         int nvis = 0;
  59: 
  60:         for (; j < w->ww_i.r; j++, win++, smap++)
  61:             if (*win == 0 && *smap == w->ww_index)
  62:                 nvis++;
  63:         w->ww_nvis[i] = nvis;
  64:     }
  65:     w->ww_buf -= dr;
  66:     for (i = w->ww_b.t; i < w->ww_b.b; i++)
  67:         w->ww_buf[i] -= dc;
  68: }

Defined functions

Defined variables