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Annotation of src/usr.bin/window/wwcursor.c, Revision 1.4

1.4     ! downsj      1: /*     $OpenBSD$       */
1.2       niklas      2: /*     $NetBSD: wwcursor.c,v 1.4 1996/02/08 20:45:08 mycroft Exp $     */
1.1       deraadt     3:
                      4: /*
                      5:  * Copyright (c) 1983, 1993
                      6:  *     The Regents of the University of California.  All rights reserved.
                      7:  *
                      8:  * This code is derived from software contributed to Berkeley by
                      9:  * Edward Wang at The University of California, Berkeley.
                     10:  *
                     11:  * Redistribution and use in source and binary forms, with or without
                     12:  * modification, are permitted provided that the following conditions
                     13:  * are met:
                     14:  * 1. Redistributions of source code must retain the above copyright
                     15:  *    notice, this list of conditions and the following disclaimer.
                     16:  * 2. Redistributions in binary form must reproduce the above copyright
                     17:  *    notice, this list of conditions and the following disclaimer in the
                     18:  *    documentation and/or other materials provided with the distribution.
                     19:  * 3. All advertising materials mentioning features or use of this software
                     20:  *    must display the following acknowledgement:
                     21:  *     This product includes software developed by the University of
                     22:  *     California, Berkeley and its contributors.
                     23:  * 4. Neither the name of the University nor the names of its contributors
                     24:  *    may be used to endorse or promote products derived from this software
                     25:  *    without specific prior written permission.
                     26:  *
                     27:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     28:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     29:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     30:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     31:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     32:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     33:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     34:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     35:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     36:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     37:  * SUCH DAMAGE.
                     38:  */
                     39:
                     40: #ifndef lint
                     41: #if 0
                     42: static char sccsid[] = "@(#)wwcursor.c 8.1 (Berkeley) 6/6/93";
                     43: #else
1.4     ! downsj     44: static char rcsid[] = "$OpenBSD$";
1.1       deraadt    45: #endif
                     46: #endif /* not lint */
                     47:
                     48: #include "ww.h"
                     49:
                     50: wwcursor(w, on)
                     51: register struct ww *w;
                     52: {
                     53:        register char *win;
                     54:
                     55:        if (on) {
1.2       niklas     56:                if (ISSET(w->ww_wflags, WWW_HASCURSOR))
1.1       deraadt    57:                        return;
1.2       niklas     58:                SET(w->ww_wflags, WWW_HASCURSOR);
1.1       deraadt    59:        } else {
1.2       niklas     60:                if (!ISSET(w->ww_wflags, WWW_HASCURSOR))
1.1       deraadt    61:                        return;
1.2       niklas     62:                CLR(w->ww_wflags, WWW_HASCURSOR);
1.1       deraadt    63:        }
                     64:        if (wwcursormodes != 0) {
                     65:                win = &w->ww_win[w->ww_cur.r][w->ww_cur.c];
                     66:                *win ^= wwcursormodes;
                     67:                if (w->ww_cur.r < w->ww_i.t || w->ww_cur.r >= w->ww_i.b
                     68:                    || w->ww_cur.c < w->ww_i.l || w->ww_cur.c >= w->ww_i.r)
                     69:                        return;
                     70:                if (wwsmap[w->ww_cur.r][w->ww_cur.c] == w->ww_index) {
                     71:                        if (*win == 0)
                     72:                                w->ww_nvis[w->ww_cur.r]++;
                     73:                        else if (*win == wwcursormodes)
                     74:                                w->ww_nvis[w->ww_cur.r]--;
                     75:                        wwns[w->ww_cur.r][w->ww_cur.c].c_m ^= wwcursormodes;
                     76:                        wwtouched[w->ww_cur.r] |= WWU_TOUCHED;
                     77:                }
                     78:        }
                     79: }
                     80:
                     81: wwsetcursormodes(new)
                     82: register new;
                     83: {
                     84:        register i;
                     85:        register struct ww *w;
                     86:        register old = wwcursormodes;
                     87:
                     88:        new &= wwavailmodes;
                     89:        if (new == wwcursormodes)
                     90:                return;
                     91:        for (i = 0; i < NWW; i++)
1.2       niklas     92:                if (wwindex[i] != 0 &&
                     93:                    ISSET((w = wwindex[i])->ww_wflags, WWW_HASCURSOR)) {
1.1       deraadt    94:                        wwcursor(w, 0);
                     95:                        wwcursormodes = new;
                     96:                        wwcursor(w, 1);
                     97:                        wwcursormodes = old;
                     98:                }
                     99:        wwcursormodes = new;
                    100: }