/*
   3ds81 - Nintendo ZX81 emulator.

   Copyright (C) 2021  Ian Cowburn <ianc@noddybox.co.uk>
   
   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 3
   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, see <http://www.gnu.org/licenses/>.
  
   $Id: keyboard.h 61 2008-11-03 17:07:32Z ianc $
*/
#ifndef DS81_KEYBOARD_H
#define DS81_KEYBOARD_H

#include <stdio.h>

/* Note that the first 40 values purposefully are the keyboard matrix keys.
   Note also that they are in display order, not matrix order.
*/
typedef enum
{
    SK_1,
    SK_2,
    SK_3,
    SK_4,
    SK_5,

    SK_6,
    SK_7,
    SK_8,
    SK_9,
    SK_0,

    SK_Q,
    SK_W,
    SK_E,
    SK_R,
    SK_T,

    SK_Y,
    SK_U,
    SK_I,
    SK_O,
    SK_P,

    SK_A,
    SK_S,
    SK_D,
    SK_F,
    SK_G,

    SK_H,
    SK_J,
    SK_K,
    SK_L,
    SK_NEWLINE,

    SK_SHIFT,
    SK_Z,
    SK_X,
    SK_C,
    SK_V,

    SK_B,
    SK_N,
    SK_M,
    SK_PERIOD,
    SK_SPACE,

    SK_ABOUT,
    SK_CONFIG,
    SK_PAD_UP,
    SK_PAD_DOWN,
    SK_PAD_LEFT,
    SK_PAD_RIGHT,
    SK_PAD_A,
    SK_PAD_B,
    SK_PAD_X,
    SK_PAD_Y,
    SK_PAD_R,
    SK_PAD_L,
    SK_PAD_START,
    SK_PAD_SELECT,

    NUM_SOFT_KEYS
} SoftKey;

typedef struct
{
    SoftKey	key;
    int		pressed;
} SoftKeyEvent;


/* Display the soft keyboard.
*/
void	SK_DisplayKeyboard(void);

/* Returns TRUE while there are still key events for this cycle
*/
int	SK_GetEvent(SoftKeyEvent *ev);

/* Returns TRUE while there are still key events for this cycle.  Unlike 
   SK_GetEvent this does not do joypad mappings.
*/
int	SK_GetBareEvent(SoftKeyEvent *ev);

/* Sets a key to be 'sticky'.
*/
void	SK_SetSticky(SoftKey key, int is_sticky);

/* Map the joypad to keys.  Note that when mapped that both the key and the
   joypad code will be generated.
*/
void	SK_DefinePad(SoftKey pad, SoftKey key);

/* Returns a name for key symbols.
*/
const char *SK_KeyName(SoftKey pad);

/* Returns TRUE if the passed key is currently pressed
*/
int     SK_KeyPressed(SoftKey key);

/* Allows the keyboard to save/restore its state from a stream
*/
void	SK_SaveSnapshot(FILE *fp);
void	SK_LoadSnapshot(FILE *fp);

#endif	/* DS81_KEYBOARD_H */