window/wwcursor.c

   1 /*      $NetBSD: wwcursor.c,v 1.5 1997/11/21 08:37:06 lukem Exp $       */
   2
   3 /*
   4  * Copyright (c) 1983, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Edward Wang at The University of California, Berkeley.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *      This product includes software developed by the University of
  21  *      California, Berkeley and its contributors.
  22  * 4. Neither the name of the University nor the names of its contributors
  23  *    may be used to endorse or promote products derived from this software
  24  *    without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36  * SUCH DAMAGE.
  37  */
  38
  39 #include <sys/cdefs.h>
  40 #ifndef lint
  41 #if 0
  42 static char sccsid[] = "@(#)wwcursor.c  8.1 (Berkeley) 6/6/93";
  43 #else
  44 __RCSID("$NetBSD: wwcursor.c,v 1.5 1997/11/21 08:37:06 lukem Exp $");
  45 #endif
  46 #endif /* not lint */
  47
  48 #include "ww.h"
  49
  50 void
  51 wwcursor(w, on)
  52         struct ww *w;
  53         int on;
  54 {
  55         char *win;
  56
  57         if (on) {
  58                 if (ISSET(w->ww_wflags, WWW_HASCURSOR))
  59                         return;
  60                 SET(w->ww_wflags, WWW_HASCURSOR);
  61         } else {
  62                 if (!ISSET(w->ww_wflags, WWW_HASCURSOR))
  63                         return;
  64                 CLR(w->ww_wflags, WWW_HASCURSOR);
  65         }
  66         if (wwcursormodes != 0) {
  67                 win = &w->ww_win[w->ww_cur.r][w->ww_cur.c];
  68                 *win ^= wwcursormodes;
  69                 if (w->ww_cur.r < w->ww_i.t || w->ww_cur.r >= w->ww_i.b
  70                     || w->ww_cur.c < w->ww_i.l || w->ww_cur.c >= w->ww_i.r)
  71                         return;
  72                 if (wwsmap[w->ww_cur.r][w->ww_cur.c] == w->ww_index) {
  73                         if (*win == 0)
  74                                 w->ww_nvis[w->ww_cur.r]++;
  75                         else if (*win == wwcursormodes)
  76                                 w->ww_nvis[w->ww_cur.r]--;
  77                         wwns[w->ww_cur.r][w->ww_cur.c].c_m ^= wwcursormodes;
  78                         wwtouched[w->ww_cur.r] |= WWU_TOUCHED;
  79                 }
  80         }
  81 }
  82
  83 void
  84 wwsetcursormodes(new)
  85         int new;
  86 {
  87         int i;
  88         struct ww *w;
  89         int old = wwcursormodes;
  90
  91         new &= wwavailmodes;
  92         if (new == wwcursormodes)
  93                 return;
  94         for (i = 0; i < NWW; i++)
  95                 if (wwindex[i] != 0 &&
  96                     ISSET((w = wwindex[i])->ww_wflags, WWW_HASCURSOR)) {
  97                         wwcursor(w, 0);
  98                         wwcursormodes = new;
  99                         wwcursor(w, 1);
 100                         wwcursormodes = old;
 101                 }
 102         wwcursormodes = new;
 103 }