/*
 * general purpose mouse (gpm)
 *
 * Copyright (c) 2008        Nico Schottelius <nico-gpm2008 at schottelius.org>
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
 *
 ********/

#include "mice.h"                   /* Gpm_type         */
#include "message.h"                /* messaging         */

/* M_brw is a variant of m$ 'Intellimouse' the middle button is different */
int M_brw(Gpm_Event *state,  unsigned char *data)
{
   state->buttons= ((data[0] & 0x20) >> 3)   /* left */
      | ((data[3] & 0x20) >> 4)   /* middle */
      | ((data[0] & 0x10) >> 4);   /* right */
   state->dx=      (signed char)(((data[0] & 0x03) << 6) | (data[1] & 0x3F));
   state->dy=      (signed char)(((data[0] & 0x0C) << 4) | (data[2] & 0x3F));
   if (((data[0]&0xC0) != 0x40)||
      ((data[1]&0xC0) != 0x00)||
      ((data[2]&0xC0) != 0x00)||
      ((data[3]&0xC0) != 0x00)) {
      gpm_report(GPM_PR_DEBUG,GPM_MESS_SKIP_DATAP,data[0],data[1],data[2],data[3]);
      return -1;
   }
   /* wheel (dz) is (data[3] & 0x0f) */
   /* where is the side button? I can sort of detect it at 9600 baud */
   /* Note this mouse is very noisy */

   return 0;
}
