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/*
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 * Project: S.Ha.R.K.
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 *
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 * Coordinators:
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 *   Giorgio Buttazzo    <giorgio@sssup.it>
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 *   Paolo Gai           <pj@gandalf.sssup.it>
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 *
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 * Authors     :
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 *   Paolo Gai           <pj@gandalf.sssup.it>
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 *   Massimiliano Giorgi <massy@gandalf.sssup.it>
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 *   Luca Abeni          <luca@gandalf.sssup.it>
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 *   (see the web pages for full authors list)
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 *
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 * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy)
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 *
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 * http://www.sssup.it
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 * http://retis.sssup.it
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 * http://shark.sssup.it
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 */
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/**
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 ------------
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 CVS :        $Id: _mouse.h,v 1.1.1.1 2002-03-29 14:12:49 pj Exp $
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 File:        $File$
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 Revision:    $Revision: 1.1.1.1 $
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 Last update: $Date: 2002-03-29 14:12:49 $
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 ------------
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 _mouse.h
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**/
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/*
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 * Copyright (C) 2000 Paolo Gai
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
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 * (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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 *
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 */
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#ifndef ___MOUSE_H__
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#define ___MOUSE_H__
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/* "virtual operations" on a mouse */
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struct mouse_operations {
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  char *name;             /* name! */
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  char *desc;             /* a descriptive line */  
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  BYTE proto[4];          
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  int  packetlen;         /* lenght of a packet */
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  int  howmany;           /* howmany bytes to read at a time (unused) */
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  int  getextra;          /* there is a extra byte (unused) */
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  int  absolute;          /* absolute pointing devide (unused) */
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  int  dummy;             /* (unused) */
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  int  (*open)(void*);    /* open comunication device */
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  void (*close)(void);    /* close comunication device */
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  void (*wait)(void);     /* wait to have a BYTE (blocking operation)*/
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  int  (*get)(BYTE *ptr); /* get last BYTE */
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  void (*enable)(void);   /* enable interface */
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  void (*disable)(void);  /* disable interface */
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  /* this function decode the mouse packet into a MOUSE_EVT structure */
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  int  (*decode)(MOUSE_EVT *evt,unsigned char *data);
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};
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/* to virtualize interface beetwen a mouse device and a mouse protocol */
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extern int    mousetype;
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extern struct mouse_operations vmouse[];
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/* functions and variables (to use virtual operation)*/
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extern int  (*open_mouse)(void*);     /* open comunication device */
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extern void (*close_mouse)(void);     /* close comunication device */
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extern void (*wait_mouse)(void);      /* wait to have a BYTE (blocking operation)*/
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extern int  (*get_mouse)(BYTE *data); /* get last BYTE */
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extern void (*enable_mouse)(void);    /* enable interface */
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extern void (*disable_mouse)(void);   /* disable interface */
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extern char *name_mouse;
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extern char *desc_mouse;
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extern BYTE *proto_mouse;
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extern int  packetlen_mouse;
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/* used by mouse protocol task */
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extern short int mouse_lim_x1;
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extern short int mouse_lim_y1;
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extern short int mouse_lim_x2;
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extern short int mouse_lim_y2;
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extern short int mouse_x;
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extern short int mouse_x_mick;
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extern short int mouse_y;
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extern short int mouse_y_mick;
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extern short int mouse_buttons;
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extern short int mouse_thresholdlim;
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extern MOUSE_HANDLER mouse_handler;
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/* a generic mouse server */
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extern TASK generalmouse_server(void);
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/*
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 * mouse autocursor variables
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 */
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/* mask to extrac the status from autocursormode */
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#define STATUSMASK 0x0f
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/* flags for autocursormode (there are some other flags into mouse.h) */
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#define GRXCURSOR 0x100
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#define TXTCURSOR 0x200
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/* cursor status and flags */
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extern int autocursormode;
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/* this functions is used to enable/disable the cursor */
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/* (it is here to be used by the mcurgrx.c  module) */
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int _mouse_cursor_init(int cmd,
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                       void(*my_show_cursor)(int,int),
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                       void(*my_restore_cursor)(int,int)
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                       );
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/* this is used by mcurgrx.c to know the last mouse position */
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/* (to not declare saved_x & saved_y public) */
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void _mouse_getsavedposition(int *xptr, int *yptr);
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#endif
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