/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2010 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 DirectFB input events into SDL events */

#include <directfb.h>

#include "../SDL_sysvideo.h"
#include "../../events/SDL_events_c.h"
#include "../../events/SDL_keyboard_c.h"
#include "../../events/scancodes_linux.h"
#include "SDL_DirectFB_events.h"

#if USE_MULTI_API
#define SDL_SendMouseMotion_ex(w, id, relative, x, y, p) SDL_SendMouseMotion(id, relative, x, y, p)
#define SDL_SendMouseButton_ex(w, id, state, button) SDL_SendMouseButton(id, state, button)
#define SDL_SendKeyboardKey_ex(id, state, scancode) SDL_SendKeyboardKey(id, state, scancode)
#define SDL_SendKeyboardText_ex(id, text) SDL_SendKeyboardText(id, text)
#else
#define SDL_SendMouseMotion_ex(w, id, relative, x, y, p) SDL_SendMouseMotion(w, relative, x, y)
#define SDL_SendMouseButton_ex(w, id, state, button) SDL_SendMouseButton(w, state, button)
#define SDL_SendKeyboardKey_ex(id, state, scancode) SDL_SendKeyboardKey(state, scancode)
#define SDL_SendKeyboardText_ex(id, text) SDL_SendKeyboardText(text)
#endif

typedef struct _cb_data cb_data;
struct _cb_data 
{
	DFB_DeviceData *devdata;	
	int sys_ids;
	int sys_kbd;
};

/* The translation tables from a DirectFB keycode to a SDL keysym */
static SDLKey oskeymap[256];


static SDL_KeySym *DirectFB_TranslateKey(_THIS, DFBWindowEvent * evt,
                                         SDL_KeySym * keysym);
static SDL_KeySym *DirectFB_TranslateKeyInputEvent(_THIS, int index,
                                                   DFBInputEvent * evt,
                                                   SDL_KeySym * keysym);

static void DirectFB_InitOSKeymap(_THIS, SDLKey * keypmap, int numkeys);
static int DirectFB_TranslateButton(DFBInputDeviceButtonIdentifier button);

static void
DirectFB_SetContext(_THIS, SDL_Window *window)
{
#if (DFB_VERSION_ATLEAST(1,0,0))
    /* FIXME: does not work on 1.0/1.2 with radeon driver
     *        the approach did work with the matrox driver
     *        This has simply no effect.
     */

    SDL_VideoDisplay *display = window->display;
    DFB_DisplayData *dispdata = (DFB_DisplayData *) display->driverdata;

	/* FIXME: should we handle the error */
    if (dispdata->vidIDinuse)
        SDL_DFB_CHECK(dispdata->vidlayer->SwitchContext(dispdata->vidlayer,
                                                           DFB_TRUE));
#endif

}

static void
FocusAllMice(_THIS, SDL_Window *window)
{
#if USE_MULTI_API
    SDL_DFB_DEVICEDATA(_this);
    int index;

    for (index = 0; index < devdata->num_mice; index++)
        SDL_SetMouseFocus(devdata->mouse_id[index], id);
#else
    SDL_SetMouseFocus(window);
#endif
}


static void
FocusAllKeyboards(_THIS, SDL_Window *window)
{
#if USE_MULTI_API
    SDL_DFB_DEVICEDATA(_this);
    int index;

    for (index = 0; index < devdata->num_keyboard; index++)
        SDL_SetKeyboardFocus(index, id);
#else
    SDL_SetKeyboardFocus(window);
#endif
}

static void
MotionAllMice(_THIS, int x, int y)
{
#if USE_MULTI_API
    SDL_DFB_DEVICEDATA(_this);
    int index;

    for (index = 0; index < devdata->num_mice; index++) {
        SDL_Mouse *mouse = SDL_GetMouse(index);
        mouse->x = mouse->last_x = x;
        mouse->y = mouse->last_y = y;
        //SDL_SendMouseMotion(devdata->mouse_id[index], 0, x, y, 0);
    }
#endif
}

static int
KbdIndex(_THIS, int id)
{
    SDL_DFB_DEVICEDATA(_this);
    int index;

    for (index = 0; index < devdata->num_keyboard; index++) {
        if (devdata->keyboard[index].id == id)
            return index;
    }
    return -1;
}

static int
ClientXY(DFB_WindowData * p, int *x, int *y)
{
    int cx, cy;

    cx = *x;
    cy = *y;

    cx -= p->client.x;
    cy -= p->client.y;

    if (cx < 0 || cy < 0)
        return 0;
    if (cx >= p->client.w || cy >= p->client.h)
        return 0;
    *x = cx;
    *y = cy;
    return 1;
}

static void
ProcessWindowEvent(_THIS, DFB_WindowData * p, Uint32 flags,
                   DFBWindowEvent * evt)
{
    SDL_DFB_DEVICEDATA(_this);
    SDL_KeySym keysym;
    char text[5];

    if (evt->clazz == DFEC_WINDOW) {
        switch (evt->type) {
        case DWET_BUTTONDOWN:
            if (ClientXY(p, &evt->x, &evt->y)) {
                if (!devdata->use_linux_input) {
                    SDL_SendMouseMotion_ex(p->sdl_window, devdata->mouse_id[0], 0, evt->x,
                                        evt->y, 0);
                    SDL_SendMouseButton_ex(p->sdl_window, devdata->mouse_id[0],
                                        SDL_PRESSED,
                                        DirectFB_TranslateButton
                                        (evt->button));
                } else {
                    MotionAllMice(_this, evt->x, evt->y);
                }
            }
            break;
        case DWET_BUTTONUP:
            if (ClientXY(p, &evt->x, &evt->y)) {
                if (!devdata->use_linux_input) {
                    SDL_SendMouseMotion_ex(p->sdl_window, devdata->mouse_id[0], 0, evt->x,
                                        evt->y, 0);
                    SDL_SendMouseButton_ex(p->sdl_window, devdata->mouse_id[0],
                                        SDL_RELEASED,
                                        DirectFB_TranslateButton
                                        (evt->button));
                } else {
                    MotionAllMice(_this, evt->x, evt->y);
                }
            }
            break;
        case DWET_MOTION:
            if (ClientXY(p, &evt->x, &evt->y)) {
                SDL_Window *window = p->sdl_window;
                if (!devdata->use_linux_input) {
                    if (!(flags & SDL_WINDOW_INPUT_GRABBED))
                        SDL_SendMouseMotion_ex(p->sdl_window, devdata->mouse_id[0], 0,
                                            evt->x, evt->y, 0);
                } else {
                    /* relative movements are not exact! 
                     * This code should limit the number of events sent.
                     * However it kills MAME axis recognition ... */
                    static int cnt = 0;
                    if (1 && ++cnt > 20) {
                        MotionAllMice(_this, evt->x, evt->y);
                        cnt = 0;
                    }
                }
                if (!(window->flags & SDL_WINDOW_MOUSE_FOCUS))
                    SDL_SendWindowEvent(p->sdl_window, SDL_WINDOWEVENT_ENTER, 0,
                                        0);
            }
            break;
        case DWET_KEYDOWN:
            if (!devdata->use_linux_input) {
                DirectFB_TranslateKey(_this, evt, &keysym);
                SDL_SendKeyboardKey_ex(0, SDL_PRESSED, keysym.scancode);
                if (SDL_EventState(SDL_TEXTINPUT, SDL_QUERY)) {
                    SDL_memcpy(text, &keysym.unicode, 4);
                    text[4] = 0;
                    if (*text) {
                        SDL_SendKeyboardText_ex(0, text);
                    }
                }
            }
            break;
        case DWET_KEYUP:
            if (!devdata->use_linux_input) {
                DirectFB_TranslateKey(_this, evt, &keysym);
                SDL_SendKeyboardKey_ex(0, SDL_RELEASED, keysym.scancode);
            }
            break;
        case DWET_POSITION:
            if (ClientXY(p, &evt->x, &evt->y)) {
                SDL_SendWindowEvent(p->sdl_window, SDL_WINDOWEVENT_MOVED,
                                    evt->x, evt->y);
            }
            break;
        case DWET_POSITION_SIZE:
            if (ClientXY(p, &evt->x, &evt->y)) {
                SDL_SendWindowEvent(p->sdl_window, SDL_WINDOWEVENT_MOVED,
                                    evt->x, evt->y);
            }
            /* fall throught */
        case DWET_SIZE:
            // FIXME: what about < 0
            evt->w -= (p->theme.right_size + p->theme.left_size);
            evt->h -=
                (p->theme.top_size + p->theme.bottom_size +
                 p->theme.caption_size);
            SDL_SendWindowEvent(p->sdl_window, SDL_WINDOWEVENT_RESIZED,
                                evt->w, evt->h);
            break;
        case DWET_CLOSE:
            SDL_SendWindowEvent(p->sdl_window, SDL_WINDOWEVENT_CLOSE, 0, 0);
            break;
        case DWET_GOTFOCUS:
            DirectFB_SetContext(_this, p->sdl_window);
            FocusAllKeyboards(_this, p->sdl_window);
            SDL_SendWindowEvent(p->sdl_window, SDL_WINDOWEVENT_FOCUS_GAINED,
                                0, 0);
            break;
        case DWET_LOSTFOCUS:
            SDL_SendWindowEvent(p->sdl_window, SDL_WINDOWEVENT_FOCUS_LOST, 0, 0);
            FocusAllKeyboards(_this, 0);
            break;
        case DWET_ENTER:
            /* SDL_DirectFB_ReshowCursor(_this, 0); */
            FocusAllMice(_this, p->sdl_window);
            // FIXME: when do we really enter ?
            if (ClientXY(p, &evt->x, &evt->y))
                MotionAllMice(_this, evt->x, evt->y);
            SDL_SendWindowEvent(p->sdl_window, SDL_WINDOWEVENT_ENTER, 0, 0);
            break;
        case DWET_LEAVE:
            SDL_SendWindowEvent(p->sdl_window, SDL_WINDOWEVENT_LEAVE, 0, 0);
            FocusAllMice(_this, 0);
            /* SDL_DirectFB_ReshowCursor(_this, 1); */
            break;
        default:
            ;
        }
    } else
        printf("Event Clazz %d\n", evt->clazz);
}

static void
ProcessInputEvent(_THIS, DFBInputEvent * ievt)
{
    SDL_DFB_DEVICEDATA(_this);
    SDL_KeySym keysym;
    int kbd_idx;
    char text[5];

    if (!devdata->use_linux_input) {
        if (ievt->type == DIET_AXISMOTION) {
            if ((devdata->grabbed_window != NULL) && (ievt->flags & DIEF_AXISREL)) {
                if (ievt->axis == DIAI_X)
                    SDL_SendMouseMotion_ex(devdata->grabbed_window, ievt->device_id, 1,
                                        ievt->axisrel, 0, 0);
                else if (ievt->axis == DIAI_Y)
                    SDL_SendMouseMotion_ex(devdata->grabbed_window, ievt->device_id, 1, 0,
                                        ievt->axisrel, 0);
            }
        }
    } else {
        static int last_x, last_y;

        switch (ievt->type) {
        case DIET_AXISMOTION:
            if (ievt->flags & DIEF_AXISABS) {
                if (ievt->axis == DIAI_X)
                    last_x = ievt->axisabs;
                else if (ievt->axis == DIAI_Y)
                    last_y = ievt->axisabs;
                if (!(ievt->flags & DIEF_FOLLOW)) {
#if USE_MULTI_API
                    SDL_Mouse *mouse = SDL_GetMouse(ievt->device_id);
                    SDL_Window *window = SDL_GetWindowFromID(mouse->focus);
#else
                    SDL_Window *window = devdata->grabbed_window;
#endif
                    if (window) {
                        DFB_WindowData *windata =
                            (DFB_WindowData *) window->driverdata;
                        int x, y;

                        windata->window->GetPosition(windata->window, &x, &y);
                        SDL_SendMouseMotion_ex(window, ievt->device_id, 0,
                                            last_x - (x +
                                                      windata->client.x),
                                            last_y - (y +
                                                      windata->client.y), 0);
                    } else {
                        SDL_SendMouseMotion_ex(window, ievt->device_id, 0, last_x,
                                            last_y, 0);
                    }
                }
            } else if (ievt->flags & DIEF_AXISREL) {
                if (ievt->axis == DIAI_X)
                    SDL_SendMouseMotion_ex(devdata->grabbed_window, ievt->device_id, 1,
                                        ievt->axisrel, 0, 0);
                else if (ievt->axis == DIAI_Y)
                    SDL_SendMouseMotion_ex(devdata->grabbed_window, ievt->device_id, 1, 0,
                                        ievt->axisrel, 0);
            }
            break;
        case DIET_KEYPRESS:
            kbd_idx = KbdIndex(_this, ievt->device_id);
            DirectFB_TranslateKeyInputEvent(_this, kbd_idx, ievt, &keysym);
            SDL_SendKeyboardKey_ex(kbd_idx, SDL_PRESSED, keysym.scancode);
            if (SDL_EventState(SDL_TEXTINPUT, SDL_QUERY)) {
                SDL_memcpy(text, &keysym.unicode, 4);
                text[4] = 0;
                if (*text) {
                    SDL_SendKeyboardText_ex(kbd_idx, text);
                }
            }
            break;
        case DIET_KEYRELEASE:
            kbd_idx = KbdIndex(_this, ievt->device_id);
            DirectFB_TranslateKeyInputEvent(_this, kbd_idx, ievt, &keysym);
            SDL_SendKeyboardKey_ex(kbd_idx, SDL_RELEASED, keysym.scancode);
            break;
        case DIET_BUTTONPRESS:
            if (ievt->buttons & DIBM_LEFT)
                SDL_SendMouseButton_ex(devdata->grabbed_window, ievt->device_id, SDL_PRESSED, 1);
            if (ievt->buttons & DIBM_MIDDLE)
                SDL_SendMouseButton_ex(devdata->grabbed_window, ievt->device_id, SDL_PRESSED, 2);
            if (ievt->buttons & DIBM_RIGHT)
                SDL_SendMouseButton_ex(devdata->grabbed_window, ievt->device_id, SDL_PRESSED, 3);
            break;
        case DIET_BUTTONRELEASE:
            if (!(ievt->buttons & DIBM_LEFT))
                SDL_SendMouseButton_ex(devdata->grabbed_window, ievt->device_id, SDL_RELEASED, 1);
            if (!(ievt->buttons & DIBM_MIDDLE))
                SDL_SendMouseButton_ex(devdata->grabbed_window, ievt->device_id, SDL_RELEASED, 2);
            if (!(ievt->buttons & DIBM_RIGHT))
                SDL_SendMouseButton_ex(devdata->grabbed_window, ievt->device_id, SDL_RELEASED, 3);
            break;
        default:
            break;              /* please gcc */
        }
    }
}

void
DirectFB_PumpEventsWindow(_THIS)
{
    SDL_DFB_DEVICEDATA(_this);
    DFB_WindowData *p;
    DFBInputEvent ievt;

    for (p = devdata->firstwin; p != NULL; p = p->next) {
        DFBWindowEvent evt;
        SDL_Window *w = p->sdl_window;

        while (p->eventbuffer->GetEvent(p->eventbuffer,
                                        DFB_EVENT(&evt)) == DFB_OK) {
            if (!DirectFB_WM_ProcessEvent(_this, w, &evt))
                ProcessWindowEvent(_this, p, w->flags, &evt);
        }
    }

    /* Now get relative events in case we need them */
    while (devdata->events->GetEvent(devdata->events,
                                     DFB_EVENT(&ievt)) == DFB_OK) {
        ProcessInputEvent(_this, &ievt);
    }
}

void
DirectFB_InitOSKeymap(_THIS, SDLKey * keymap, int numkeys)
{
    int i;

    /* Initialize the DirectFB key translation table */
    for (i = 0; i < numkeys; ++i)
        keymap[i] = SDL_SCANCODE_UNKNOWN;

    keymap[DIKI_A - DIKI_UNKNOWN] = SDL_SCANCODE_A;
    keymap[DIKI_B - DIKI_UNKNOWN] = SDL_SCANCODE_B;
    keymap[DIKI_C - DIKI_UNKNOWN] = SDL_SCANCODE_C;
    keymap[DIKI_D - DIKI_UNKNOWN] = SDL_SCANCODE_D;
    keymap[DIKI_E - DIKI_UNKNOWN] = SDL_SCANCODE_E;
    keymap[DIKI_F - DIKI_UNKNOWN] = SDL_SCANCODE_F;
    keymap[DIKI_G - DIKI_UNKNOWN] = SDL_SCANCODE_G;
    keymap[DIKI_H - DIKI_UNKNOWN] = SDL_SCANCODE_H;
    keymap[DIKI_I - DIKI_UNKNOWN] = SDL_SCANCODE_I;
    keymap[DIKI_J - DIKI_UNKNOWN] = SDL_SCANCODE_J;
    keymap[DIKI_K - DIKI_UNKNOWN] = SDL_SCANCODE_K;
    keymap[DIKI_L - DIKI_UNKNOWN] = SDL_SCANCODE_L;
    keymap[DIKI_M - DIKI_UNKNOWN] = SDL_SCANCODE_M;
    keymap[DIKI_N - DIKI_UNKNOWN] = SDL_SCANCODE_N;
    keymap[DIKI_O - DIKI_UNKNOWN] = SDL_SCANCODE_O;
    keymap[DIKI_P - DIKI_UNKNOWN] = SDL_SCANCODE_P;
    keymap[DIKI_Q - DIKI_UNKNOWN] = SDL_SCANCODE_Q;
    keymap[DIKI_R - DIKI_UNKNOWN] = SDL_SCANCODE_R;
    keymap[DIKI_S - DIKI_UNKNOWN] = SDL_SCANCODE_S;
    keymap[DIKI_T - DIKI_UNKNOWN] = SDL_SCANCODE_T;
    keymap[DIKI_U - DIKI_UNKNOWN] = SDL_SCANCODE_U;
    keymap[DIKI_V - DIKI_UNKNOWN] = SDL_SCANCODE_V;
    keymap[DIKI_W - DIKI_UNKNOWN] = SDL_SCANCODE_W;
    keymap[DIKI_X - DIKI_UNKNOWN] = SDL_SCANCODE_X;
    keymap[DIKI_Y - DIKI_UNKNOWN] = SDL_SCANCODE_Y;
    keymap[DIKI_Z - DIKI_UNKNOWN] = SDL_SCANCODE_Z;

    keymap[DIKI_0 - DIKI_UNKNOWN] = SDL_SCANCODE_0;
    keymap[DIKI_1 - DIKI_UNKNOWN] = SDL_SCANCODE_1;
    keymap[DIKI_2 - DIKI_UNKNOWN] = SDL_SCANCODE_2;
    keymap[DIKI_3 - DIKI_UNKNOWN] = SDL_SCANCODE_3;
    keymap[DIKI_4 - DIKI_UNKNOWN] = SDL_SCANCODE_4;
    keymap[DIKI_5 - DIKI_UNKNOWN] = SDL_SCANCODE_5;
    keymap[DIKI_6 - DIKI_UNKNOWN] = SDL_SCANCODE_6;
    keymap[DIKI_7 - DIKI_UNKNOWN] = SDL_SCANCODE_7;
    keymap[DIKI_8 - DIKI_UNKNOWN] = SDL_SCANCODE_8;
    keymap[DIKI_9 - DIKI_UNKNOWN] = SDL_SCANCODE_9;

    keymap[DIKI_F1 - DIKI_UNKNOWN] = SDL_SCANCODE_F1;
    keymap[DIKI_F2 - DIKI_UNKNOWN] = SDL_SCANCODE_F2;
    keymap[DIKI_F3 - DIKI_UNKNOWN] = SDL_SCANCODE_F3;
    keymap[DIKI_F4 - DIKI_UNKNOWN] = SDL_SCANCODE_F4;
    keymap[DIKI_F5 - DIKI_UNKNOWN] = SDL_SCANCODE_F5;
    keymap[DIKI_F6 - DIKI_UNKNOWN] = SDL_SCANCODE_F6;
    keymap[DIKI_F7 - DIKI_UNKNOWN] = SDL_SCANCODE_F7;
    keymap[DIKI_F8 - DIKI_UNKNOWN] = SDL_SCANCODE_F8;
    keymap[DIKI_F9 - DIKI_UNKNOWN] = SDL_SCANCODE_F9;
    keymap[DIKI_F10 - DIKI_UNKNOWN] = SDL_SCANCODE_F10;
    keymap[DIKI_F11 - DIKI_UNKNOWN] = SDL_SCANCODE_F11;
    keymap[DIKI_F12 - DIKI_UNKNOWN] = SDL_SCANCODE_F12;

    keymap[DIKI_ESCAPE - DIKI_UNKNOWN] = SDL_SCANCODE_ESCAPE;
    keymap[DIKI_LEFT - DIKI_UNKNOWN] = SDL_SCANCODE_LEFT;
    keymap[DIKI_RIGHT - DIKI_UNKNOWN] = SDL_SCANCODE_RIGHT;
    keymap[DIKI_UP - DIKI_UNKNOWN] = SDL_SCANCODE_UP;
    keymap[DIKI_DOWN - DIKI_UNKNOWN] = SDL_SCANCODE_DOWN;
    keymap[DIKI_CONTROL_L - DIKI_UNKNOWN] = SDL_SCANCODE_LCTRL;
    keymap[DIKI_CONTROL_R - DIKI_UNKNOWN] = SDL_SCANCODE_RCTRL;
    keymap[DIKI_SHIFT_L - DIKI_UNKNOWN] = SDL_SCANCODE_LSHIFT;
    keymap[DIKI_SHIFT_R - DIKI_UNKNOWN] = SDL_SCANCODE_RSHIFT;
    keymap[DIKI_ALT_L - DIKI_UNKNOWN] = SDL_SCANCODE_LALT;
    keymap[DIKI_ALT_R - DIKI_UNKNOWN] = SDL_SCANCODE_RALT;
    keymap[DIKI_META_L - DIKI_UNKNOWN] = SDL_SCANCODE_LGUI;
    keymap[DIKI_META_R - DIKI_UNKNOWN] = SDL_SCANCODE_RGUI;
    keymap[DIKI_SUPER_L - DIKI_UNKNOWN] = SDL_SCANCODE_APPLICATION;
    keymap[DIKI_SUPER_R - DIKI_UNKNOWN] = SDL_SCANCODE_APPLICATION;
    /* FIXME:Do we read hyper keys ?
     * keymap[DIKI_HYPER_L - DIKI_UNKNOWN] = SDL_SCANCODE_APPLICATION;
     * keymap[DIKI_HYPER_R - DIKI_UNKNOWN] = SDL_SCANCODE_APPLICATION;
     */
    keymap[DIKI_TAB - DIKI_UNKNOWN] = SDL_SCANCODE_TAB;
    keymap[DIKI_ENTER - DIKI_UNKNOWN] = SDL_SCANCODE_RETURN;
    keymap[DIKI_SPACE - DIKI_UNKNOWN] = SDL_SCANCODE_SPACE;
    keymap[DIKI_BACKSPACE - DIKI_UNKNOWN] = SDL_SCANCODE_BACKSPACE;
    keymap[DIKI_INSERT - DIKI_UNKNOWN] = SDL_SCANCODE_INSERT;
    keymap[DIKI_DELETE - DIKI_UNKNOWN] = SDL_SCANCODE_DELETE;
    keymap[DIKI_HOME - DIKI_UNKNOWN] = SDL_SCANCODE_HOME;
    keymap[DIKI_END - DIKI_UNKNOWN] = SDL_SCANCODE_END;
    keymap[DIKI_PAGE_UP - DIKI_UNKNOWN] = SDL_SCANCODE_PAGEUP;
    keymap[DIKI_PAGE_DOWN - DIKI_UNKNOWN] = SDL_SCANCODE_PAGEDOWN;
    keymap[DIKI_CAPS_LOCK - DIKI_UNKNOWN] = SDL_SCANCODE_CAPSLOCK;
    keymap[DIKI_NUM_LOCK - DIKI_UNKNOWN] = SDL_SCANCODE_NUMLOCKCLEAR;
    keymap[DIKI_SCROLL_LOCK - DIKI_UNKNOWN] = SDL_SCANCODE_SCROLLLOCK;
    keymap[DIKI_PRINT - DIKI_UNKNOWN] = SDL_SCANCODE_PRINTSCREEN;
    keymap[DIKI_PAUSE - DIKI_UNKNOWN] = SDL_SCANCODE_PAUSE;

    keymap[DIKI_KP_EQUAL - DIKI_UNKNOWN] = SDL_SCANCODE_KP_EQUALS;
    keymap[DIKI_KP_DECIMAL - DIKI_UNKNOWN] = SDL_SCANCODE_KP_PERIOD;
    keymap[DIKI_KP_0 - DIKI_UNKNOWN] = SDL_SCANCODE_KP_0;
    keymap[DIKI_KP_1 - DIKI_UNKNOWN] = SDL_SCANCODE_KP_1;
    keymap[DIKI_KP_2 - DIKI_UNKNOWN] = SDL_SCANCODE_KP_2;
    keymap[DIKI_KP_3 - DIKI_UNKNOWN] = SDL_SCANCODE_KP_3;
    keymap[DIKI_KP_4 - DIKI_UNKNOWN] = SDL_SCANCODE_KP_4;
    keymap[DIKI_KP_5 - DIKI_UNKNOWN] = SDL_SCANCODE_KP_5;
    keymap[DIKI_KP_6 - DIKI_UNKNOWN] = SDL_SCANCODE_KP_6;
    keymap[DIKI_KP_7 - DIKI_UNKNOWN] = SDL_SCANCODE_KP_7;
    keymap[DIKI_KP_8 - DIKI_UNKNOWN] = SDL_SCANCODE_KP_8;
    keymap[DIKI_KP_9 - DIKI_UNKNOWN] = SDL_SCANCODE_KP_9;
    keymap[DIKI_KP_DIV - DIKI_UNKNOWN] = SDL_SCANCODE_KP_DIVIDE;
    keymap[DIKI_KP_MULT - DIKI_UNKNOWN] = SDL_SCANCODE_KP_MULTIPLY;
    keymap[DIKI_KP_MINUS - DIKI_UNKNOWN] = SDL_SCANCODE_KP_MINUS;
    keymap[DIKI_KP_PLUS - DIKI_UNKNOWN] = SDL_SCANCODE_KP_PLUS;
    keymap[DIKI_KP_ENTER - DIKI_UNKNOWN] = SDL_SCANCODE_KP_ENTER;

    keymap[DIKI_QUOTE_LEFT - DIKI_UNKNOWN] = SDL_SCANCODE_GRAVE;        /*  TLDE  */
    keymap[DIKI_MINUS_SIGN - DIKI_UNKNOWN] = SDL_SCANCODE_MINUS;        /*  AE11  */
    keymap[DIKI_EQUALS_SIGN - DIKI_UNKNOWN] = SDL_SCANCODE_EQUALS;      /*  AE12  */
    keymap[DIKI_BRACKET_LEFT - DIKI_UNKNOWN] = SDL_SCANCODE_RIGHTBRACKET;       /*  AD11  */
    keymap[DIKI_BRACKET_RIGHT - DIKI_UNKNOWN] = SDL_SCANCODE_LEFTBRACKET;       /*  AD12  */
    keymap[DIKI_BACKSLASH - DIKI_UNKNOWN] = SDL_SCANCODE_BACKSLASH;     /*  BKSL  */
    keymap[DIKI_SEMICOLON - DIKI_UNKNOWN] = SDL_SCANCODE_SEMICOLON;     /*  AC10  */
    keymap[DIKI_QUOTE_RIGHT - DIKI_UNKNOWN] = SDL_SCANCODE_APOSTROPHE;  /*  AC11  */
    keymap[DIKI_COMMA - DIKI_UNKNOWN] = SDL_SCANCODE_COMMA;     /*  AB08  */
    keymap[DIKI_PERIOD - DIKI_UNKNOWN] = SDL_SCANCODE_PERIOD;   /*  AB09  */
    keymap[DIKI_SLASH - DIKI_UNKNOWN] = SDL_SCANCODE_SLASH;     /*  AB10  */
    keymap[DIKI_LESS_SIGN - DIKI_UNKNOWN] = SDL_SCANCODE_NONUSBACKSLASH;        /*  103rd  */

}

static SDL_KeySym *
DirectFB_TranslateKey(_THIS, DFBWindowEvent * evt, SDL_KeySym * keysym)
{
    SDL_DFB_DEVICEDATA(_this);

    if (evt->key_code >= 0 &&
        evt->key_code < SDL_arraysize(linux_scancode_table))
        keysym->scancode = linux_scancode_table[evt->key_code];
    else
        keysym->scancode = SDL_SCANCODE_UNKNOWN;

    if (keysym->scancode == SDL_SCANCODE_UNKNOWN ||
        devdata->keyboard[0].is_generic) {
        if (evt->key_id - DIKI_UNKNOWN < SDL_arraysize(oskeymap))
            keysym->scancode = oskeymap[evt->key_id - DIKI_UNKNOWN];
        else
            keysym->scancode = SDL_SCANCODE_UNKNOWN;
    }

    keysym->unicode =
        (DFB_KEY_TYPE(evt->key_symbol) == DIKT_UNICODE) ? evt->key_symbol : 0;
    if (keysym->unicode == 0 &&
        (evt->key_symbol > 0 && evt->key_symbol < 255))
        keysym->unicode = evt->key_symbol;

    return keysym;
}

static SDL_KeySym *
DirectFB_TranslateKeyInputEvent(_THIS, int index, DFBInputEvent * evt,
                                SDL_KeySym * keysym)
{
    SDL_DFB_DEVICEDATA(_this);

    if (evt->key_code >= 0 &&
        evt->key_code < SDL_arraysize(linux_scancode_table))
        keysym->scancode = linux_scancode_table[evt->key_code];
    else
        keysym->scancode = SDL_SCANCODE_UNKNOWN;

    if (keysym->scancode == SDL_SCANCODE_UNKNOWN ||
        devdata->keyboard[index].is_generic) {
        if (evt->key_id - DIKI_UNKNOWN < SDL_arraysize(oskeymap))
            keysym->scancode = oskeymap[evt->key_id - DIKI_UNKNOWN];
        else
            keysym->scancode = SDL_SCANCODE_UNKNOWN;
    }

    keysym->unicode =
        (DFB_KEY_TYPE(evt->key_symbol) == DIKT_UNICODE) ? evt->key_symbol : 0;
    if (keysym->unicode == 0 &&
        (evt->key_symbol > 0 && evt->key_symbol < 255))
        keysym->unicode = evt->key_symbol;

    return keysym;
}

static int
DirectFB_TranslateButton(DFBInputDeviceButtonIdentifier button)
{
    switch (button) {
    case DIBI_LEFT:
        return 1;
    case DIBI_MIDDLE:
        return 2;
    case DIBI_RIGHT:
        return 3;
    default:
        return 0;
    }
}

static DFBEnumerationResult
EnumKeyboards(DFBInputDeviceID device_id,
                DFBInputDeviceDescription desc, void *callbackdata)
{
	cb_data *cb = callbackdata;
    DFB_DeviceData *devdata = cb->devdata;
#if USE_MULTI_API
    SDL_Keyboard keyboard;
#endif
    SDLKey keymap[SDL_NUM_SCANCODES];

	if (!cb->sys_kbd) {
		if (cb->sys_ids) {
		    if (device_id >= 0x10)
		        return DFENUM_OK;
		} else {
		    if (device_id < 0x10)
		        return DFENUM_OK;
		}
	} else {
		if (device_id != DIDID_KEYBOARD)
		    return DFENUM_OK;
	}
	
    if ((desc.caps & DIDTF_KEYBOARD)) {
#if USE_MULTI_API
        SDL_zero(keyboard);
        SDL_AddKeyboard(&keyboard, devdata->num_keyboard);
#endif
        devdata->keyboard[devdata->num_keyboard].id = device_id;
        devdata->keyboard[devdata->num_keyboard].is_generic = 0;
        if (!strncmp("X11", desc.name, 3))
            devdata->keyboard[devdata->num_keyboard].is_generic = 1;

        SDL_GetDefaultKeymap(keymap);
#if USE_MULTI_API
        SDL_SetKeymap(devdata->num_keyboard, 0, keymap, SDL_NUM_SCANCODES);
#else
        SDL_SetKeymap(0, keymap, SDL_NUM_SCANCODES);
#endif
        devdata->num_keyboard++;

		if (cb->sys_kbd)
	        return DFENUM_CANCEL;
    }
    return DFENUM_OK;
}

void
DirectFB_InitKeyboard(_THIS)
{
    SDL_DFB_DEVICEDATA(_this);
	cb_data cb;    
	
    DirectFB_InitOSKeymap(_this, &oskeymap[0], SDL_arraysize(oskeymap));

    devdata->num_keyboard = 0;
    cb.devdata = devdata;
    
    if (devdata->use_linux_input) {
    	cb.sys_kbd = 0;
        cb.sys_ids = 0;
        SDL_DFB_CHECK(devdata->dfb->
                      EnumInputDevices(devdata->dfb, EnumKeyboards, &cb));
        if (devdata->num_keyboard == 0) {
            cb.sys_ids = 1;
            SDL_DFB_CHECK(devdata->dfb->EnumInputDevices(devdata->dfb,
                                                         EnumKeyboards,
                                                         &cb));
        }
    } else {
    	cb.sys_kbd = 1;
        SDL_DFB_CHECK(devdata->dfb->EnumInputDevices(devdata->dfb,
                                                     EnumKeyboards,
                                                     &cb));
    }
}

void
DirectFB_QuitKeyboard(_THIS)
{
    //SDL_DFB_DEVICEDATA(_this);

    SDL_KeyboardQuit();

}

#if 0
/* FIXME: Remove once determined this is not needed in fullscreen mode */
void
DirectFB_PumpEvents(_THIS)
{
    SDL_DFB_DEVICEDATA(_this);
    DFBInputEvent evt;
    static last_x = 0, last_y = 0;

    while (devdata->eventbuffer->GetEvent(devdata->eventbuffer,
                                          DFB_EVENT(&evt)) == DFB_OK) {
        SDL_KeySym keysym;
        DFBInputDeviceModifierMask mod;

        if (evt.clazz = DFEC_INPUT) {
            if (evt.flags & DIEF_MODIFIERS)
                mod = evt.modifiers;
            else
                mod = 0;

            switch (evt.type) {
            case DIET_BUTTONPRESS:
                posted +=
                    SDL_PrivateMouseButton(SDL_PRESSED,
                                           DirectFB_TranslateButton
                                           (evt.button), 0, 0);
                break;
            case DIET_BUTTONRELEASE:
                posted +=
                    SDL_PrivateMouseButton(SDL_RELEASED,
                                           DirectFB_TranslateButton
                                           (evt.button), 0, 0);
                break;
            case DIET_KEYPRESS:
                posted +=
                    SDL_PrivateKeyboard(SDL_PRESSED,
                                        DirectFB_TranslateKey
                                        (evt.key_id, evt.key_symbol,
                                         mod, &keysym));
                break;
            case DIET_KEYRELEASE:
                posted +=
                    SDL_PrivateKeyboard(SDL_RELEASED,
                                        DirectFB_TranslateKey
                                        (evt.key_id, evt.key_symbol,
                                         mod, &keysym));
                break;
            case DIET_AXISMOTION:
                if (evt.flags & DIEF_AXISREL) {
                    if (evt.axis == DIAI_X)
                        posted +=
                            SDL_PrivateMouseMotion(0, 1, evt.axisrel, 0);
                    else if (evt.axis == DIAI_Y)
                        posted +=
                            SDL_PrivateMouseMotion(0, 1, 0, evt.axisrel);
                } else if (evt.flags & DIEF_AXISABS) {
                    if (evt.axis == DIAI_X)
                        last_x = evt.axisabs;
                    else if (evt.axis == DIAI_Y)
                        last_y = evt.axisabs;
                    posted += SDL_PrivateMouseMotion(0, 0, last_x, last_y);
                }
                break;
            default:
                ;
            }
        }
    }
}
#endif