/****************************************************************************
*
*                            Open Watcom Project
*
*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
*  ========================================================================
*
*    This file contains Original Code and/or Modifications of Original
*    Code as defined in and that are subject to the Sybase Open Watcom
*    Public License version 1.0 (the 'License'). You may not use this file
*    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
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*    provided with the Original Code and Modifications, and is also
*    available at www.sybase.com/developer/opensource.
*
*    The Original Code and all software distributed under the License are
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*  ========================================================================
*
* Description:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
*               DESCRIBE IT HERE!
*
****************************************************************************/


/*-

 uivirt.h -- interface class for display, mouse, keyboard.
        Note the separation of these is notational convenience
        It is unlikely you will ever want an X keyboard with
        a QNX Console.....

*/

#ifndef qnx_uivirt_h
#define qnx_uivirt_h


typedef struct Display {
        int (*init)( void );  /* setup */
        int (*fini)( void );  /* tear down */
        int (*update)(SAREA *area);     /* change screen */
        int (*refresh)(int noopt);      /* force redraw of screen */
        /*- cursor */
        int (*getcur)(ORD *row, ORD *col, int *type, int *attr);
        int (*setcur)(ORD row, ORD col, int type, int attr);
        EVENT   (*event)( void );
} Display;


typedef struct Keyboard {
        int (*init)( void );  /* set initial modes, etc... */
        int (*fini)( void );  /* restore saved modes, etc... */
        void (*arm)( void );  /* arm for next character */
        int (*save)( void );  /* save current mode, restore original mode */
        int (*restore)( void );       /* set into raw mode */
        int (*flush)( void ); /* clear look-ahead */
        int (*stop)( void );  /* clear look-ahead, disable keyboard events */
        int (*shift_state)( void );   /* shift status */
        int (*un_event)(EVENT event); /* allow modify of next event */
} Keyboard;

typedef struct Mouse {
        int     (*init)( int install );
        int     (*fini)( void );
        int     (*set_speed)( int speed );
        int     (*stop)( void );      /* clear input, disable events */
        int     (*check)( unsigned short *status, unsigned short *row,
                         unsigned short *col, unsigned long *time );
} Mouse;

typedef struct {
    Display     *disp;
    Keyboard    *keyb;
    Mouse       *mouse;
} VirtDisplay;

typedef struct {
    bool        (*check)(void);
    VirtDisplay virt;
} PossibleDisplay;

extern VirtDisplay      UIVirt;

/*-
 * convenient naming, and easier changes later...
 */

#define _uibiosinit   (*UIVirt.disp->init)
#define _uibiosfini   (*UIVirt.disp->fini)
#define _physupdate   (*UIVirt.disp->update)
#define _ui_refresh   (*UIVirt.disp->refresh)
#define _uigetcursor  (*UIVirt.disp->getcur)
#define _uisetcursor  (*UIVirt.disp->setcur)
#define _uievent      (*UIVirt.disp->event)

#define _initkeyboard (*UIVirt.keyb->init)
#define _finikeyboard (*UIVirt.keyb->fini)
#define _armkeyboard (*UIVirt.keyb->arm)
#define _savekeyb     (*UIVirt.keyb->save)
#define _restorekeyb  (*UIVirt.keyb->restore)
#define _flushkey     (*UIVirt.keyb->flush)
#define _stopkeyb     (*UIVirt.keyb->stop)
#define _uicheckshift (*UIVirt.keyb->shift_state)
#define _checkshift   _uicheckshift
#define _uishiftrelease (*UIVirt.keyb->un_event)

#define _initmouse            (*UIVirt.mouse->init)
#define _finimouse            (*UIVirt.mouse->fini)
#define _checkmouse           (*UIVirt.mouse->check)
#define _stopmouse            (*UIVirt.mouse->stop)
#define _uimousespeed         (*UIVirt.mouse->set_speed)

#endif
