usr.bin/window/wwcursor.c

   1 /*      $NetBSD: wwcursor.c,v 1.6 2002/06/14 01:06:58 wiz 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. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #include <sys/cdefs.h>
  36 #ifndef lint
  37 #if 0
  38 static char sccsid[] = "@(#)wwcursor.c  8.1 (Berkeley) 6/6/93";
  39 #else
  40 __RCSID("$NetBSD: wwcursor.c,v 1.6 2002/06/14 01:06:58 wiz Exp $");
  41 #endif
  42 #endif /* not lint */
  43
  44 #include "ww.h"
  45
  46 void
  47 wwcursor(struct ww *w, int on)
  48 {
  49         char *win;
  50
  51         if (on) {
  52                 if (ISSET(w->ww_wflags, WWW_HASCURSOR))
  53                         return;
  54                 SET(w->ww_wflags, WWW_HASCURSOR);
  55         } else {
  56                 if (!ISSET(w->ww_wflags, WWW_HASCURSOR))
  57                         return;
  58                 CLR(w->ww_wflags, WWW_HASCURSOR);
  59         }
  60         if (wwcursormodes != 0) {
  61                 win = &w->ww_win[w->ww_cur.r][w->ww_cur.c];
  62                 *win ^= wwcursormodes;
  63                 if (w->ww_cur.r < w->ww_i.t || w->ww_cur.r >= w->ww_i.b
  64                     || w->ww_cur.c < w->ww_i.l || w->ww_cur.c >= w->ww_i.r)
  65                         return;
  66                 if (wwsmap[w->ww_cur.r][w->ww_cur.c] == w->ww_index) {
  67                         if (*win == 0)
  68                                 w->ww_nvis[w->ww_cur.r]++;
  69                         else if (*win == wwcursormodes)
  70                                 w->ww_nvis[w->ww_cur.r]--;
  71                         wwns[w->ww_cur.r][w->ww_cur.c].c_m ^= wwcursormodes;
  72                         wwtouched[w->ww_cur.r] |= WWU_TOUCHED;
  73                 }
  74         }
  75 }
  76
  77 void
  78 wwsetcursormodes(int new)
  79 {
  80         int i;
  81         struct ww *w;
  82         int old = wwcursormodes;
  83
  84         new &= wwavailmodes;
  85         if (new == wwcursormodes)
  86                 return;
  87         for (i = 0; i < NWW; i++)
  88                 if (wwindex[i] != 0 &&
  89                     ISSET((w = wwindex[i])->ww_wflags, WWW_HASCURSOR)) {
  90                         wwcursor(w, 0);
  91                         wwcursormodes = new;
  92                         wwcursor(w, 1);
  93                         wwcursormodes = old;
  94                 }
  95         wwcursormodes = new;
  96 }