usr.bin/window/wwcursor.c

   1 /*      @(#)wwcursor.c  8.1 (Berkeley) 6/6/93   */
   2 /*      $NetBSD: wwcursor.c,v 1.7 2003/08/07 11:17:37 agc Exp $ */
   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. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include "ww.h"
  37
  38 void
  39 wwcursor(struct ww *w, int on)
  40 {
  41         char *win;
  42
  43         if (on) {
  44                 if (ISSET(w->ww_wflags, WWW_HASCURSOR))
  45                         return;
  46                 SET(w->ww_wflags, WWW_HASCURSOR);
  47         } else {
  48                 if (!ISSET(w->ww_wflags, WWW_HASCURSOR))
  49                         return;
  50                 CLR(w->ww_wflags, WWW_HASCURSOR);
  51         }
  52         if (wwcursormodes != 0) {
  53                 win = &w->ww_win[w->ww_cur.r][w->ww_cur.c];
  54                 *win ^= wwcursormodes;
  55                 if (w->ww_cur.r < w->ww_i.t || w->ww_cur.r >= w->ww_i.b
  56                     || w->ww_cur.c < w->ww_i.l || w->ww_cur.c >= w->ww_i.r)
  57                         return;
  58                 if (wwsmap[w->ww_cur.r][w->ww_cur.c] == w->ww_index) {
  59                         if (*win == 0)
  60                                 w->ww_nvis[w->ww_cur.r]++;
  61                         else if (*win == wwcursormodes)
  62                                 w->ww_nvis[w->ww_cur.r]--;
  63                         wwns[w->ww_cur.r][w->ww_cur.c].c_m ^= wwcursormodes;
  64                         wwtouched[w->ww_cur.r] |= WWU_TOUCHED;
  65                 }
  66         }
  67 }
  68
  69 void
  70 wwsetcursormodes(int new)
  71 {
  72         int i;
  73         struct ww *w;
  74         int old = wwcursormodes;
  75
  76         new &= wwavailmodes;
  77         if (new == wwcursormodes)
  78                 return;
  79         for (i = 0; i < NWW; i++)
  80                 if (wwindex[i] != 0 &&
  81                     ISSET((w = wwindex[i])->ww_wflags, WWW_HASCURSOR)) {
  82                         wwcursor(w, 0);
  83                         wwcursormodes = new;
  84                         wwcursor(w, 1);
  85                         wwcursormodes = old;
  86                 }
  87         wwcursormodes = new;
  88 }