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Annotation of 43BSDTahoe/ucb/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:  * Redistribution and use in source and binary forms are permitted
                      6:  * provided that the above copyright notice and this paragraph are
                      7:  * duplicated in all such forms and that any documentation,
                      8:  * advertising materials, and other materials related to such
                      9:  * distribution and use acknowledge that the software was developed
                     10:  * by the University of California, Berkeley.  The name of the
                     11:  * University may not be used to endorse or promote products derived
                     12:  * from this software without specific prior written permission.
                     13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     16:  */
                     17: 
                     18: #ifndef lint
                     19: static char sccsid[] = "@(#)wwmove.c   3.9 (Berkeley) 6/29/88";
                     20: #endif /* not lint */
                     21: 
                     22: #include "ww.h"
                     23: 
                     24: /*
                     25:  * Move a window.  Should be unattached.
                     26:  */
                     27: wwmove(w, row, col)
                     28: register struct ww *w;
                     29: {
                     30:        register dr, dc;
                     31:        register i;
                     32: 
                     33:        dr = row - w->ww_w.t;
                     34:        dc = col - w->ww_w.l;
                     35: 
                     36:        w->ww_w.t += dr;
                     37:        w->ww_w.b += dr;
                     38:        w->ww_w.l += dc;
                     39:        w->ww_w.r += dc;
                     40: 
                     41:        w->ww_b.t += dr;
                     42:        w->ww_b.b += dr;
                     43:        w->ww_b.l += dc;
                     44:        w->ww_b.r += dc;
                     45: 
                     46:        w->ww_i.t = MAX(w->ww_w.t, 0);
                     47:        w->ww_i.b = MIN(w->ww_w.b, wwnrow);
                     48:        w->ww_i.nr = w->ww_i.b - w->ww_i.t;
                     49:        w->ww_i.l = MAX(w->ww_w.l, 0);
                     50:        w->ww_i.r = MIN(w->ww_w.r, wwncol);
                     51:        w->ww_i.nc = w->ww_i.r - w->ww_i.l;
                     52: 
                     53:        w->ww_cur.r += dr;
                     54:        w->ww_cur.c += dc;
                     55: 
                     56:        w->ww_win -= dr;
                     57:        for (i = w->ww_w.t; i < w->ww_w.b; i++)
                     58:                w->ww_win[i] -= dc;
                     59:        if (w->ww_fmap != 0) {
                     60:                w->ww_fmap -= dr;
                     61:                for (i = w->ww_w.t; i < w->ww_w.b; i++)
                     62:                        w->ww_fmap[i] -= dc;
                     63:        }
                     64:        w->ww_nvis -= dr;
                     65:        for (i = w->ww_i.t; i < w->ww_i.b; i++) {
                     66:                register j = w->ww_i.l;
                     67:                register char *win = &w->ww_win[i][j];
                     68:                register char *smap = &wwsmap[i][j];
                     69:                int nvis = 0;
                     70: 
                     71:                for (; j < w->ww_i.r; j++, win++, smap++)
                     72:                        if (*win == 0 && *smap == w->ww_index)
                     73:                                nvis++;
                     74:                w->ww_nvis[i] = nvis;
                     75:        }
                     76:        w->ww_buf -= dr;
                     77:        for (i = w->ww_b.t; i < w->ww_b.b; i++)
                     78:                w->ww_buf[i] -= dc;
                     79: }

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