/*
    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"

/* Handle the event stream, converting AA events into SDL events */

#include <stdio.h>

#include <aalib.h>

#include "SDL.h"
#include "../../events/SDL_sysevents.h"
#include "../../events/SDL_events_c.h"
#include "SDL_aavideo.h"
#include "SDL_aaevents_c.h"

/* The translation tables from a console scancode to a SDL keysym */
static SDLKey keymap[401];

static SDL_keysym *TranslateKey(int scancode, SDL_keysym * keysym);


void
AA_PumpEvents(_THIS)
{
    int posted = 0;
    int mouse_button, mouse_x, mouse_y;
    int evt;
    SDL_keysym keysym;

    static int prev_button = -1, prev_x = -1, prev_y = -1;

    if (!this->screen)          /* Wait till we got the screen initialized */
        return;

    do {
        posted = 0;
        /* Gather events */

        /* Get mouse status */
        SDL_mutexP(AA_mutex);
        aa_getmouse(AA_context, &mouse_x, &mouse_y, &mouse_button);
        SDL_mutexV(AA_mutex);
        mouse_x = mouse_x * this->screen->w / aa_scrwidth(AA_context);
        mouse_y = mouse_y * this->screen->h / aa_scrheight(AA_context);

        /* Compare against previous state and generate events */
        if (prev_button != mouse_button) {
            if (mouse_button & AA_BUTTON1) {
                if (!(prev_button & AA_BUTTON1)) {
                    posted += SDL_PrivateMouseButton(SDL_PRESSED, 1, 0, 0);
                }
            } else {
                if (prev_button & AA_BUTTON1) {
                    posted += SDL_PrivateMouseButton(SDL_RELEASED, 1, 0, 0);
                }
            }
            if (mouse_button & AA_BUTTON2) {
                if (!(prev_button & AA_BUTTON2)) {
                    posted += SDL_PrivateMouseButton(SDL_PRESSED, 2, 0, 0);
                }
            } else {
                if (prev_button & AA_BUTTON2) {
                    posted += SDL_PrivateMouseButton(SDL_RELEASED, 2, 0, 0);
                }
            }
            if (mouse_button & AA_BUTTON3) {
                if (!(prev_button & AA_BUTTON3)) {
                    posted += SDL_PrivateMouseButton(SDL_PRESSED, 3, 0, 0);
                }
            } else {
                if (prev_button & AA_BUTTON3) {
                    posted += SDL_PrivateMouseButton(SDL_RELEASED, 3, 0, 0);
                }
            }
        }
        if (prev_x != mouse_x || prev_y != mouse_y) {
            posted += SDL_PrivateMouseMotion(0, 0, mouse_x, mouse_y);
        }

        prev_button = mouse_button;
        prev_x = mouse_x;
        prev_y = mouse_y;

        /* Get keyboard event */
        SDL_mutexP(AA_mutex);
        evt = aa_getevent(AA_context, 0);
        SDL_mutexV(AA_mutex);
        if ((evt > AA_NONE) && (evt < AA_RELEASE) && (evt != AA_MOUSE)
            && (evt != AA_RESIZE)) {
            /* Key pressed */
/*    			printf("Key pressed: %d (%c)\n", evt, evt); */
            posted +=
                SDL_PrivateKeyboard(SDL_PRESSED, TranslateKey(evt, &keysym));
        } else if (evt >= AA_RELEASE) {
            /* Key released */
            evt &= ~AA_RELEASE;
/*  			printf("Key released: %d (%c)\n", evt, evt); */
            posted +=
                SDL_PrivateKeyboard(SDL_RELEASED, TranslateKey(evt, &keysym));
        }
    }
    while (posted);
}

void
AA_InitOSKeymap(_THIS)
{
    int i;
    static const char *std_keys =
        " 01234567890&#'()_-|$*+-=/\\:;.,!?<>{}[]@~%^\x9";
    const char *std;

    /* Initialize the AAlib key translation table */
    for (i = 0; i < SDL_arraysize(keymap); ++i)
        keymap[i] = SDLK_UNKNOWN;

    /* Alphabet keys */
    for (i = 0; i < 26; ++i) {
        keymap['a' + i] = SDLK_a + i;
        keymap['A' + i] = SDLK_a + i;
    }
    /* Function keys */
    for (i = 0; i < 12; ++i) {
        keymap[334 + i] = SDLK_F1 + i;
    }
    /* Keys that have the same symbols and don't have to be translated */
    for (std = std_keys; *std; std++) {
        keymap[*std] = *std;
    }

    keymap[13] = SDLK_RETURN;
    keymap[AA_BACKSPACE] = SDLK_BACKSPACE;

    keymap[369] = SDLK_LSHIFT;
    keymap[370] = SDLK_RSHIFT;
    keymap[371] = SDLK_LCTRL;
    keymap[372] = SDLK_RCTRL;
    keymap[377] = SDLK_LALT;
    keymap[270] = SDLK_RALT;
    keymap[271] = SDLK_NUMLOCK;
    keymap[373] = SDLK_CAPSLOCK;
    keymap[164] = SDLK_SCROLLOCK;

    keymap[243] = SDLK_INSERT;
    keymap[304] = SDLK_DELETE;
    keymap[224] = SDLK_HOME;
    keymap[231] = SDLK_END;
    keymap[229] = SDLK_PAGEUP;
    keymap[230] = SDLK_PAGEDOWN;

    keymap[241] = SDLK_PRINT;
    keymap[163] = SDLK_BREAK;

    keymap[302] = SDLK_KP0;
    keymap[300] = SDLK_KP1;
    keymap[297] = SDLK_KP2;
    keymap[299] = SDLK_KP3;
    keymap[294] = SDLK_KP4;
    keymap[301] = SDLK_KP5;
    keymap[296] = SDLK_KP6;
    keymap[293] = SDLK_KP7;
    keymap[295] = SDLK_KP8;
    keymap[298] = SDLK_KP9;

    keymap[AA_ESC] = SDLK_ESCAPE;
    keymap[AA_UP] = SDLK_UP;
    keymap[AA_DOWN] = SDLK_DOWN;
    keymap[AA_LEFT] = SDLK_LEFT;
    keymap[AA_RIGHT] = SDLK_RIGHT;
}

static SDL_keysym *
TranslateKey(int scancode, SDL_keysym * keysym)
{
    /* Sanity check */
    if (scancode >= SDL_arraysize(keymap))
        scancode = AA_UNKNOWN;

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

    /* If UNICODE is on, get the UNICODE value for the key */
    keysym->unicode = 0;
    if (SDL_TranslateUNICODE) {
        /* Populate the unicode field with the ASCII value */
        keysym->unicode = scancode;
    }
    return (keysym);
}

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