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Annotation of 43BSDReno/usr.bin/window/wwcursor.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[] = "@(#)wwcursor.c 3.12 (Berkeley) 6/6/90";
                     25: #endif /* not lint */
                     26: 
                     27: #include "ww.h"
                     28: 
                     29: wwcursor(w, on)
                     30: register struct ww *w;
                     31: {
                     32:        register char *win;
                     33: 
                     34:        if (on) {
                     35:                if (w->ww_hascursor)
                     36:                        return;
                     37:                w->ww_hascursor = 1;
                     38:        } else {
                     39:                if (!w->ww_hascursor)
                     40:                        return;
                     41:                w->ww_hascursor = 0;
                     42:        }
                     43:        if (wwcursormodes != 0) {
                     44:                win = &w->ww_win[w->ww_cur.r][w->ww_cur.c];
                     45:                *win ^= wwcursormodes;
                     46:                if (w->ww_cur.r < w->ww_i.t || w->ww_cur.r >= w->ww_i.b
                     47:                    || w->ww_cur.c < w->ww_i.l || w->ww_cur.c >= w->ww_i.r)
                     48:                        return;
                     49:                if (wwsmap[w->ww_cur.r][w->ww_cur.c] == w->ww_index) {
                     50:                        if (*win == 0)
                     51:                                w->ww_nvis[w->ww_cur.r]++;
                     52:                        else if (*win == wwcursormodes)
                     53:                                w->ww_nvis[w->ww_cur.r]--;
                     54:                        wwns[w->ww_cur.r][w->ww_cur.c].c_m ^= wwcursormodes;
                     55:                        wwtouched[w->ww_cur.r] |= WWU_TOUCHED;
                     56:                }
                     57:        }
                     58: }
                     59: 
                     60: wwsetcursormodes(new)
                     61: register new;
                     62: {
                     63:        register i;
                     64:        register struct ww *w;
                     65:        register old = wwcursormodes;
                     66: 
                     67:        new &= wwavailmodes;
                     68:        if (new == wwcursormodes)
                     69:                return;
                     70:        for (i = 0; i < NWW; i++)
                     71:                if (wwindex[i] != 0 && (w = wwindex[i])->ww_hascursor) {
                     72:                        wwcursor(w, 0);
                     73:                        wwcursormodes = new;
                     74:                        wwcursor(w, 1);
                     75:                        wwcursormodes = old;
                     76:                }
                     77:        wwcursormodes = new;
                     78: }

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