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Annotation of 43BSDReno/usr.bin/window/wwmove.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1983 Regents of the University of California.
                      3:  * 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 are permitted provided
                      9:  * that: (1) source distributions retain this entire copyright notice and
                     10:  * comment, and (2) distributions including binaries display the following
                     11:  * acknowledgement:  ``This product includes software developed by the
                     12:  * University of California, Berkeley and its contributors'' in the
                     13:  * documentation or other materials provided with the distribution and in
                     14:  * all advertising materials mentioning features or use of this software.
                     15:  * Neither the name of the University nor the names of its contributors may
                     16:  * be used to endorse or promote products derived from this software without
                     17:  * specific prior written permission.
                     18:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     19:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     20:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     21:  */
                     22: 
                     23: #ifndef lint
                     24: static char sccsid[] = "@(#)wwmove.c   3.11 (Berkeley) 6/6/90";
                     25: #endif /* not lint */
                     26: 
                     27: #include "ww.h"
                     28: 
                     29: /*
                     30:  * Move a window.  Should be unattached.
                     31:  */
                     32: wwmove(w, row, col)
                     33: register struct ww *w;
                     34: {
                     35:        register dr, dc;
                     36:        register i;
                     37: 
                     38:        dr = row - w->ww_w.t;
                     39:        dc = col - w->ww_w.l;
                     40: 
                     41:        w->ww_w.t += dr;
                     42:        w->ww_w.b += dr;
                     43:        w->ww_w.l += dc;
                     44:        w->ww_w.r += dc;
                     45: 
                     46:        w->ww_b.t += dr;
                     47:        w->ww_b.b += dr;
                     48:        w->ww_b.l += dc;
                     49:        w->ww_b.r += dc;
                     50: 
                     51:        w->ww_i.t = MAX(w->ww_w.t, 0);
                     52:        w->ww_i.b = MIN(w->ww_w.b, wwnrow);
                     53:        w->ww_i.nr = w->ww_i.b - w->ww_i.t;
                     54:        w->ww_i.l = MAX(w->ww_w.l, 0);
                     55:        w->ww_i.r = MIN(w->ww_w.r, wwncol);
                     56:        w->ww_i.nc = w->ww_i.r - w->ww_i.l;
                     57: 
                     58:        w->ww_cur.r += dr;
                     59:        w->ww_cur.c += dc;
                     60: 
                     61:        w->ww_win -= dr;
                     62:        for (i = w->ww_w.t; i < w->ww_w.b; i++)
                     63:                w->ww_win[i] -= dc;
                     64:        if (w->ww_fmap != 0) {
                     65:                w->ww_fmap -= dr;
                     66:                for (i = w->ww_w.t; i < w->ww_w.b; i++)
                     67:                        w->ww_fmap[i] -= dc;
                     68:        }
                     69:        w->ww_nvis -= dr;
                     70:        for (i = w->ww_i.t; i < w->ww_i.b; i++) {
                     71:                register j = w->ww_i.l;
                     72:                register char *win = &w->ww_win[i][j];
                     73:                register char *smap = &wwsmap[i][j];
                     74:                int nvis = 0;
                     75: 
                     76:                for (; j < w->ww_i.r; j++, win++, smap++)
                     77:                        if (*win == 0 && *smap == w->ww_index)
                     78:                                nvis++;
                     79:                w->ww_nvis[i] = nvis;
                     80:        }
                     81:        w->ww_buf -= dr;
                     82:        for (i = w->ww_b.t; i < w->ww_b.b; i++)
                     83:                w->ww_buf[i] -= dc;
                     84: }

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