/*
    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, using hardware IKBD
 *
 *	Patrice Mandin
 */

/* Mint includes */
#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_ikbdinterrupt_s.h"

#define KEY_PRESSED		0xff
#define KEY_UNDEFINED	0x80
#define KEY_RELEASED	0x00

static Uint16 atari_prevmouseb; /* save state of mouse buttons */

void
AtariIkbd_InitOSKeymap(_THIS)
{
    SDL_memset(SDL_AtariIkbd_keyboard, KEY_UNDEFINED, sizeof(SDL_AtariIkbd_keyboard));

    /* Now install our handler */
    SDL_AtariIkbd_mouseb = SDL_AtariIkbd_mousex = SDL_AtariIkbd_mousey = 0;
    atari_prevmouseb = 0;

    Supexec(SDL_AtariIkbdInstall);
}

static int
atari_GetButton(int button)
{
    switch (button) {
    case 0:
        return SDL_BUTTON_RIGHT;
        break;
    case 1:
    default:
        return SDL_BUTTON_LEFT;
        break;
    }
}

void
AtariIkbd_PumpEvents(_THIS)
{
    int i;
    SDL_keysym keysym;
    int specialkeys;

        /*--- Send keyboard events ---*/

    /* Now generate events */
    for (i = 0; i < ATARIBIOS_MAXKEYS; i++) {
        /* Key pressed ? */
        if (SDL_AtariIkbd_keyboard[i] == KEY_PRESSED) {
            SDL_PrivateKeyboard(SDL_PRESSED,
                                SDL_Atari_TranslateKey(i, &keysym, SDL_TRUE));
            SDL_AtariIkbd_keyboard[i] = KEY_UNDEFINED;
        }

        /* Key released ? */
        if (SDL_AtariIkbd_keyboard[i] == KEY_RELEASED) {
            SDL_PrivateKeyboard(SDL_RELEASED,
                                SDL_Atari_TranslateKey(i, &keysym, SDL_FALSE));
            SDL_AtariIkbd_keyboard[i] = KEY_UNDEFINED;
        }
    }

        /*--- Send mouse events ---*/

    /* Mouse motion ? */
    if (SDL_AtariIkbd_mousex || SDL_AtariIkbd_mousey) {
        SDL_PrivateMouseMotion(0, 1, SDL_AtariIkbd_mousex,
                               SDL_AtariIkbd_mousey);
        SDL_AtariIkbd_mousex = SDL_AtariIkbd_mousey = 0;
    }

    /* Mouse button ? */
    if (SDL_AtariIkbd_mouseb != atari_prevmouseb) {
        for (i = 0; i < 2; i++) {
            int curbutton, prevbutton;

            curbutton = SDL_AtariIkbd_mouseb & (1 << i);
            prevbutton = atari_prevmouseb & (1 << i);

            if (curbutton && !prevbutton) {
                SDL_PrivateMouseButton(SDL_PRESSED, atari_GetButton(i), 0, 0);
            }
            if (!curbutton && prevbutton) {
                SDL_PrivateMouseButton(SDL_RELEASED,
                                       atari_GetButton(i), 0, 0);
            }
        }
        atari_prevmouseb = SDL_AtariIkbd_mouseb;
    }
}

void
AtariIkbd_ShutdownEvents(void)
{
    Supexec(SDL_AtariIkbdUninstall);
}

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