/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2006 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga
    slouken@libsdl.org
*/
#include "SDL_config.h"

/*
 *	Atari keyboard events manager
 *
 *	Patrice Mandin
 *
 *	This routines choose what the final event manager will be
 */

#include <mint/cookie.h>
#include <mint/ostruct.h>
#include <mint/osbind.h>

#include "../../events/SDL_sysevents.h"
#include "../../events/SDL_events_c.h"

#include "SDL_atarikeys.h"
#include "SDL_atarievents_c.h"
#include "SDL_biosevents_c.h"
#include "SDL_gemdosevents_c.h"
#include "SDL_ikbdevents_c.h"

enum
{
    MCH_ST = 0,
    MCH_STE,
    MCH_TT,
    MCH_F30,
    MCH_CLONE,
    MCH_ARANYM
};

#ifndef KT_NOCHANGE
# define KT_NOCHANGE -1
#endif

/* The translation tables from a console scancode to a SDL keysym */
static SDLKey keymap[ATARIBIOS_MAXKEYS];
static unsigned char *keytab_normal;

void (*SDL_Atari_ShutdownEvents) (void);

static void
SDL_Atari_InitializeEvents(_THIS)
{
    const char *envr;
    unsigned long cookie_mch;

    /* Test if we are on an Atari machine or not */
    if (Getcookie(C__MCH, &cookie_mch) == C_NOTFOUND) {
        cookie_mch = 0;
    }
    cookie_mch >>= 16;

    /* Default is Ikbd, the faster except for clones */
    switch (cookie_mch) {
    case MCH_ST:
    case MCH_STE:
    case MCH_TT:
    case MCH_F30:
    case MCH_ARANYM:
        _this->PumpEvents = AtariIkbd_PumpEvents;
        SDL_Atari_ShutdownEvents = AtariIkbd_ShutdownEvents;
        break;
    default:
        _this->PumpEvents = AtariGemdos_PumpEvents;
        SDL_Atari_ShutdownEvents = AtariGemdos_ShutdownEvents;
        break;
    }

    envr = SDL_getenv("SDL_ATARI_EVENTSDRIVER");

    if (!envr) {
        return;
    }

    if (SDL_strcmp(envr, "ikbd") == 0) {
        _this->PumpEvents = AtariIkbd_PumpEvents;
        SDL_Atari_ShutdownEvents = AtariIkbd_ShutdownEvents;
    }

    if (SDL_strcmp(envr, "gemdos") == 0) {
        _this->PumpEvents = AtariGemdos_PumpEvents;
        SDL_Atari_ShutdownEvents = AtariGemdos_ShutdownEvents;
    }

    if (SDL_strcmp(envr, "bios") == 0) {
        _this->PumpEvents = AtariBios_PumpEvents;
        SDL_Atari_ShutdownEvents = AtariBios_ShutdownEvents;
    }

    SDL_Atari_InitInternalKeymap(_this);
}

void
Atari_PumpEvents(_THIS)
{
    Atari_InitializeEvents(_this);

    /* Call choosen routine */
    _this->PumpEvents(_this);
}

void
SDL_Atari_InitInternalKeymap(_THIS)
{
    int i;
    _KEYTAB *key_tables;

    /* Read system tables for scancode -> ascii translation */
    key_tables = (_KEYTAB *) Keytbl(KT_NOCHANGE, KT_NOCHANGE, KT_NOCHANGE);
    keytab_normal = key_tables->unshift;

    /* Initialize keymap */
    for ( i=0; i<ATARIBIOS_MAXKEYS; i++ )
        keymap[i] = SDLK_UNKNOWN;

    /* Functions keys */
    for ( i = 0; i<10; i++ )
        keymap[SCANCODE_F1 + i] = SDLK_F1+i;

    /* Cursor keypad */
    keymap[SCANCODE_HELP] = SDLK_HELP;
    keymap[SCANCODE_UNDO] = SDLK_UNDO;
    keymap[SCANCODE_INSERT] = SDLK_INSERT;
    keymap[SCANCODE_CLRHOME] = SDLK_HOME;
    keymap[SCANCODE_UP] = SDLK_UP;
    keymap[SCANCODE_DOWN] = SDLK_DOWN;
    keymap[SCANCODE_RIGHT] = SDLK_RIGHT;
    keymap[SCANCODE_LEFT] = SDLK_LEFT;

    /* Special keys */
    keymap[SCANCODE_ESCAPE] = SDLK_ESCAPE;
    keymap[SCANCODE_BACKSPACE] = SDLK_BACKSPACE;
    keymap[SCANCODE_TAB] = SDLK_TAB;
    keymap[SCANCODE_ENTER] = SDLK_RETURN;
    keymap[SCANCODE_DELETE] = SDLK_DELETE;
    keymap[SCANCODE_LEFTCONTROL] = SDLK_LCTRL;
    keymap[SCANCODE_LEFTSHIFT] = SDLK_LSHIFT;
    keymap[SCANCODE_RIGHTSHIFT] = SDLK_RSHIFT;
    keymap[SCANCODE_LEFTALT] = SDLK_LALT;
    keymap[SCANCODE_CAPSLOCK] = SDLK_CAPSLOCK;
}

/* Atari to Unicode charset translation table */

Uint16 SDL_AtariToUnicodeTable[256] = {
    /* Standard ASCII characters from 0x00 to 0x7e */
    /* Unicode stuff from 0x7f to 0xff */

    0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007,
    0x0008, 0x0009, 0x000A, 0x000B, 0x000C, 0x000D, 0x000E, 0x000F,
    0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017,
    0x0018, 0x0019, 0x001A, 0x001B, 0x001C, 0x001D, 0x001E, 0x001F,
    0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027,
    0x0028, 0x0029, 0x002A, 0x002B, 0x002C, 0x002D, 0x002E, 0x002F,
    0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
    0x0038, 0x0039, 0x003A, 0x003B, 0x003C, 0x003D, 0x003E, 0x003F,

    0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
    0x0048, 0x0049, 0x004A, 0x004B, 0x004C, 0x004D, 0x004E, 0x004F,
    0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057,
    0x0058, 0x0059, 0x005A, 0x005B, 0x005C, 0x005D, 0x005E, 0x005F,
    0x0060, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,
    0x0068, 0x0069, 0x006A, 0x006B, 0x006C, 0x006D, 0x006E, 0x006F,
    0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077,
    0x0078, 0x0079, 0x007A, 0x007B, 0x007C, 0x007D, 0x007E, 0x0394,

    0x00C7, 0x00FC, 0x00E9, 0x00E2, 0x00E4, 0x00E0, 0x00E5, 0x00E7,
    0x00EA, 0x00EB, 0x00E8, 0x00EF, 0x00EE, 0x00EC, 0x00C4, 0x00C5,
    0x00C9, 0x00E6, 0x00C6, 0x00F4, 0x00F6, 0x00F2, 0x00FB, 0x00F9,
    0x00FF, 0x00D6, 0x00DC, 0x00A2, 0x00A3, 0x00A5, 0x00DF, 0x0192,
    0x00E1, 0x00ED, 0x00F3, 0x00FA, 0x00F1, 0x00D1, 0x00AA, 0x00BA,
    0x00BF, 0x2310, 0x00AC, 0x00BD, 0x00BC, 0x00A1, 0x00AB, 0x00BB,
    0x00C3, 0x00F5, 0x00D8, 0x00F8, 0x0153, 0x0152, 0x00C0, 0x00C3,
    0x00D5, 0x00A8, 0x00B4, 0x2020, 0x00B6, 0x00A9, 0x00AE, 0x2122,

    0x0133, 0x0132, 0x05D0, 0x05D1, 0x05D2, 0x05D3, 0x05D4, 0x05D5,
    0x05D6, 0x05D7, 0x05D8, 0x05D9, 0x05DB, 0x05DC, 0x05DE, 0x05E0,
    0x05E1, 0x05E2, 0x05E4, 0x05E6, 0x05E7, 0x05E8, 0x05E9, 0x05EA,
    0x05DF, 0x05DA, 0x05DD, 0x05E3, 0x05E5, 0x00A7, 0x2038, 0x221E,
    0x03B1, 0x03B2, 0x0393, 0x03C0, 0x03A3, 0x03C3, 0x00B5, 0x03C4,
    0x03A6, 0x0398, 0x03A9, 0x03B4, 0x222E, 0x03C6, 0x2208, 0x2229,
    0x2261, 0x00B1, 0x2265, 0x2264, 0x2320, 0x2321, 0x00F7, 0x2248,
    0x00B0, 0x2022, 0x00B7, 0x221A, 0x207F, 0x00B2, 0x00B3, 0x00AF
};

SDL_keysym *
SDL_Atari_TranslateKey(int scancode, SDL_keysym *keysym,
                       SDL_bool pressed)
{
    int asciicode = 0;

    /* Set the keysym information */
    keysym->scancode = scancode;
    keysym->mod = KMOD_NONE;
    keysym->sym = keymap[scancode];
    keysym->unicode = 0;

    if (keysym->sym == SDLK_UNKNOWN) {
        keysym->sym = asciicode = keytab_normal[scancode];		
    }

    if (SDL_TranslateUNICODE && pressed) {
        keysym->unicode = SDL_AtariToUnicodeTable[asciicode];
    }

    return(keysym);
}

/* vi: set ts=4 sw=4 expandtab: */