/****************************************************************************

**

** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the plugins of the Qt Toolkit.

**

** $QT_BEGIN_LICENSE:LGPL$

** No Commercial Usage

** This file contains pre-release code and may not be distributed.

** You may use this file in accordance with the terms and conditions

** contained in the Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

** Alternatively, this file may be used under the terms of the GNU Lesser

** General Public License version 2.1 as published by the Free Software

** Foundation and appearing in the file LICENSE.LGPL included in the

** packaging of this file.  Please review the following information to

** ensure the GNU Lesser General Public License version 2.1 requirements

** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

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** $QT_END_LICENSE$

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****************************************************************************/

#include "qdirectfbkeyboard.h"

#ifndef QT_NO_QWS_DIRECTFB

#include "qdirectfbscreen.h"

#include <qobject.h>

#include <qsocketnotifier.h>

#include <qhash.h>

#include <directfb.h>

#include <unistd.h>

#include <fcntl.h>

#include <errno.h>

QT_BEGIN_NAMESPACE

class KeyMap : public QHash<DFBInputDeviceKeySymbol, Qt::Key>

{

public:

    KeyMap();

};

Q_GLOBAL_STATIC(KeyMap, keymap);

class QDirectFBKeyboardHandlerPrivate : public QObject

{

    Q_OBJECT

public:

    QDirectFBKeyboardHandlerPrivate(QDirectFBKeyboardHandler *handler);

    ~QDirectFBKeyboardHandlerPrivate();

    void suspend();

    void resume();

private:

    QDirectFBKeyboardHandler *handler;

    IDirectFBEventBuffer *eventBuffer;

    QSocketNotifier *keyboardNotifier;

    DFBEvent event;

    int bytesRead;

    int lastUnicode, lastKeycode;

    Qt::KeyboardModifiers lastModifiers;

private Q_SLOTS:

    void readKeyboardData();

};

QDirectFBKeyboardHandlerPrivate::QDirectFBKeyboardHandlerPrivate(QDirectFBKeyboardHandler *h)

    : handler(h), eventBuffer(0), keyboardNotifier(0), bytesRead(0),

      lastUnicode(0), lastKeycode(0), lastModifiers(0)

{

    Q_ASSERT(qt_screen);

    IDirectFB *fb = QDirectFBScreen::instance()->dfb();

    if (!fb) {

        qCritical("QDirectFBKeyboardHandler: DirectFB not initialized");

        return;

    }

    DFBResult result;

    result = fb->CreateInputEventBuffer(fb, DICAPS_KEYS, DFB_TRUE,

                                        &eventBuffer);

    if (result != DFB_OK) {

        DirectFBError("QDirectFBKeyboardHandler: "

                      "Unable to create input event buffer", result);

        return;

    }

    int fd;

    result = eventBuffer->CreateFileDescriptor(eventBuffer, &fd);

    if (result != DFB_OK) {

        DirectFBError("QDirectFBKeyboardHandler: "

                      "Unable to create file descriptor", result);

        return;

    }

    int flags = ::fcntl(fd, F_GETFL, 0);

    ::fcntl(fd, F_SETFL, flags | O_NONBLOCK);

    memset(&event, 0, sizeof(event));

    keyboardNotifier = new QSocketNotifier(fd, QSocketNotifier::Read, this);

    connect(keyboardNotifier, SIGNAL(activated(int)),

            this, SLOT(readKeyboardData()));

    resume();

}

void QDirectFBKeyboardHandlerPrivate::suspend()

{

    keyboardNotifier->setEnabled(false);

}

void QDirectFBKeyboardHandlerPrivate::resume()

{

    eventBuffer->Reset(eventBuffer);

    keyboardNotifier->setEnabled(true);

}

QDirectFBKeyboardHandlerPrivate::~QDirectFBKeyboardHandlerPrivate()

{

    if (eventBuffer)

        eventBuffer->Release(eventBuffer);

}

void QDirectFBKeyboardHandlerPrivate::readKeyboardData()

{

    if(!qt_screen)

        return;

    for (;;) {

        // GetEvent returns DFB_UNSUPPORTED after CreateFileDescriptor().

        // This seems stupid and I really hope it's a bug which will be fixed.

        // DFBResult ret = eventBuffer->GetEvent(eventBuffer, &event);

        char *buf = reinterpret_cast<char*>(&event);

        int ret = ::read(keyboardNotifier->socket(),

                         buf + bytesRead, sizeof(DFBEvent) - bytesRead);

        if (ret == -1) {

            if (errno != EAGAIN)

                qWarning("QDirectFBKeyboardHandlerPrivate::readKeyboardData(): %s",

                         strerror(errno));

            return;

        }

        Q_ASSERT(ret >= 0);

        bytesRead += ret;

        if (bytesRead < int(sizeof(DFBEvent)))

            break;

        bytesRead = 0;

        Q_ASSERT(event.clazz == DFEC_INPUT);

        const DFBInputEvent input = event.input;

        Qt::KeyboardModifiers modifiers = Qt::NoModifier;

        // Not implemented:

        // if (input.modifiers & DIMM_SUPER)

        // if (input.modifiers & DIMM_HYPER)

        if (!(input.flags & DIEF_KEYSYMBOL) ||

            !(input.flags & DIEF_KEYID) ||

            !(input.type & (DIET_KEYPRESS|DIET_KEYRELEASE)))

        {

            static bool first = true;

            if (first) {

                qWarning("QDirectFBKeyboardHandler - Getting unexpected non-keyboard related events");

                first = false;

            }

            break;

        }

        if (input.flags & DIEF_MODIFIERS) {

            if (input.modifiers & DIMM_SHIFT)

                modifiers |= Qt::ShiftModifier;

            if (input.modifiers & DIMM_CONTROL)

                modifiers |= Qt::ControlModifier;

            if (input.modifiers & DIMM_ALT)

                modifiers |= Qt::AltModifier;

            if (input.modifiers & DIMM_ALTGR)

                modifiers |= Qt::AltModifier;

            if (input.modifiers & DIMM_META)

                modifiers |= Qt::MetaModifier;

        }

        const bool press = input.type & DIET_KEYPRESS;

        DFBInputDeviceKeySymbol symbol = input.key_symbol;

        int unicode = -1;

        int keycode = 0;

        keycode = keymap()->value(symbol);

        if (DFB_KEY_TYPE(symbol) == DIKT_UNICODE)

            unicode = symbol;

        if (unicode != -1 || keycode != 0) {

            bool autoRepeat = false;

            if (press) {

                if (unicode == lastUnicode && keycode == lastKeycode && modifiers == lastModifiers) {

                    autoRepeat = true;

                } else {

                    lastUnicode = unicode;

                    lastKeycode = keycode;

                    lastModifiers = modifiers;

                }

            } else {

                lastUnicode = lastKeycode = -1;

                lastModifiers = 0;

            }

            if (autoRepeat) {

                handler->processKeyEvent(unicode, keycode,

                                         modifiers, false, autoRepeat);

            }

            handler->processKeyEvent(unicode, keycode,

                                     modifiers, press, autoRepeat);

        }

    }

}

QDirectFBKeyboardHandler::QDirectFBKeyboardHandler(const QString &device)

    : QWSKeyboardHandler()

{

    Q_UNUSED(device);

    d = new QDirectFBKeyboardHandlerPrivate(this);

}

QDirectFBKeyboardHandler::~QDirectFBKeyboardHandler()

{

    delete d;

}

KeyMap::KeyMap()

{

    insert(DIKS_BACKSPACE             , Qt::Key_Backspace);

    insert(DIKS_TAB                   , Qt::Key_Tab);

    insert(DIKS_RETURN                , Qt::Key_Return);

    insert(DIKS_ESCAPE                , Qt::Key_Escape);

    insert(DIKS_DELETE                , Qt::Key_Delete);

    insert(DIKS_CURSOR_LEFT           , Qt::Key_Left);

    insert(DIKS_CURSOR_RIGHT          , Qt::Key_Right);

    insert(DIKS_CURSOR_UP             , Qt::Key_Up);

    insert(DIKS_CURSOR_DOWN           , Qt::Key_Down);

    insert(DIKS_INSERT                , Qt::Key_Insert);

    insert(DIKS_HOME                  , Qt::Key_Home);

    insert(DIKS_END                   , Qt::Key_End);

    insert(DIKS_PAGE_UP               , Qt::Key_PageUp);

    insert(DIKS_PAGE_DOWN             , Qt::Key_PageDown);

    insert(DIKS_PRINT                 , Qt::Key_Print);

    insert(DIKS_PAUSE                 , Qt::Key_Pause);

    insert(DIKS_SELECT                , Qt::Key_Select);

    insert(DIKS_GOTO                  , Qt::Key_OpenUrl);

    insert(DIKS_CLEAR                 , Qt::Key_Clear);

    insert(DIKS_MENU                  , Qt::Key_Menu);

    insert(DIKS_HELP                  , Qt::Key_Help);

    insert(DIKS_INTERNET              , Qt::Key_HomePage);

    insert(DIKS_MAIL                  , Qt::Key_LaunchMail);

    insert(DIKS_FAVORITES             , Qt::Key_Favorites);

    insert(DIKS_BACK                  , Qt::Key_Back);

    insert(DIKS_FORWARD               , Qt::Key_Forward);

    insert(DIKS_VOLUME_UP             , Qt::Key_VolumeUp);

    insert(DIKS_VOLUME_DOWN           , Qt::Key_VolumeDown);

    insert(DIKS_MUTE                  , Qt::Key_VolumeMute);

    insert(DIKS_PLAYPAUSE             , Qt::Key_Pause);

    insert(DIKS_PLAY                  , Qt::Key_MediaPlay);

    insert(DIKS_STOP                  , Qt::Key_MediaStop);

    insert(DIKS_RECORD                , Qt::Key_MediaRecord);

    insert(DIKS_PREVIOUS              , Qt::Key_MediaPrevious);

    insert(DIKS_NEXT                  , Qt::Key_MediaNext);

    insert(DIKS_F1                    , Qt::Key_F1);

    insert(DIKS_F2                    , Qt::Key_F2);

    insert(DIKS_F3                    , Qt::Key_F3);

    insert(DIKS_F4                    , Qt::Key_F4);

    insert(DIKS_F5                    , Qt::Key_F5);

    insert(DIKS_F6                    , Qt::Key_F6);

    insert(DIKS_F7                    , Qt::Key_F7);

    insert(DIKS_F8                    , Qt::Key_F8);

    insert(DIKS_F9                    , Qt::Key_F9);

    insert(DIKS_F10                   , Qt::Key_F10);

    insert(DIKS_F11                   , Qt::Key_F11);

    insert(DIKS_F12                   , Qt::Key_F12);

    insert(DIKS_SHIFT                 , Qt::Key_Shift);

    insert(DIKS_CONTROL               , Qt::Key_Control);

    insert(DIKS_ALT                   , Qt::Key_Alt);

    insert(DIKS_ALTGR                 , Qt::Key_AltGr);

    insert(DIKS_META                  , Qt::Key_Meta);

    insert(DIKS_SUPER                 , Qt::Key_Super_L); // ???

    insert(DIKS_HYPER                 , Qt::Key_Hyper_L); // ???

    insert(DIKS_CAPS_LOCK             , Qt::Key_CapsLock);

    insert(DIKS_NUM_LOCK              , Qt::Key_NumLock);

    insert(DIKS_SCROLL_LOCK           , Qt::Key_ScrollLock);

    insert(DIKS_DEAD_ABOVEDOT         , Qt::Key_Dead_Abovedot);

    insert(DIKS_DEAD_ABOVERING        , Qt::Key_Dead_Abovering);

    insert(DIKS_DEAD_ACUTE            , Qt::Key_Dead_Acute);

    insert(DIKS_DEAD_BREVE            , Qt::Key_Dead_Breve);

    insert(DIKS_DEAD_CARON            , Qt::Key_Dead_Caron);

    insert(DIKS_DEAD_CEDILLA          , Qt::Key_Dead_Cedilla);

    insert(DIKS_DEAD_CIRCUMFLEX       , Qt::Key_Dead_Circumflex);

    insert(DIKS_DEAD_DIAERESIS        , Qt::Key_Dead_Diaeresis);

    insert(DIKS_DEAD_DOUBLEACUTE      , Qt::Key_Dead_Doubleacute);

    insert(DIKS_DEAD_GRAVE            , Qt::Key_Dead_Grave);

    insert(DIKS_DEAD_IOTA             , Qt::Key_Dead_Iota);

    insert(DIKS_DEAD_MACRON           , Qt::Key_Dead_Macron);

    insert(DIKS_DEAD_OGONEK           , Qt::Key_Dead_Ogonek);

    insert(DIKS_DEAD_SEMIVOICED_SOUND , Qt::Key_Dead_Semivoiced_Sound);

    insert(DIKS_DEAD_TILDE            , Qt::Key_Dead_Tilde);

    insert(DIKS_DEAD_VOICED_SOUND     , Qt::Key_Dead_Voiced_Sound);

    insert(DIKS_SPACE                 , Qt::Key_Space);

    insert(DIKS_EXCLAMATION_MARK      , Qt::Key_Exclam);

    insert(DIKS_QUOTATION             , Qt::Key_QuoteDbl);

    insert(DIKS_NUMBER_SIGN           , Qt::Key_NumberSign);

    insert(DIKS_DOLLAR_SIGN           , Qt::Key_Dollar);

    insert(DIKS_PERCENT_SIGN          , Qt::Key_Percent);

    insert(DIKS_AMPERSAND             , Qt::Key_Ampersand);

    insert(DIKS_APOSTROPHE            , Qt::Key_Apostrophe);

    insert(DIKS_PARENTHESIS_LEFT      , Qt::Key_ParenLeft);

    insert(DIKS_PARENTHESIS_RIGHT     , Qt::Key_ParenRight);

    insert(DIKS_ASTERISK              , Qt::Key_Asterisk);

    insert(DIKS_PLUS_SIGN             , Qt::Key_Plus);

    insert(DIKS_COMMA                 , Qt::Key_Comma);

    insert(DIKS_MINUS_SIGN            , Qt::Key_Minus);

    insert(DIKS_PERIOD                , Qt::Key_Period);

    insert(DIKS_SLASH                 , Qt::Key_Slash);

    insert(DIKS_0                     , Qt::Key_0);

    insert(DIKS_1                     , Qt::Key_1);

    insert(DIKS_2                     , Qt::Key_2);

    insert(DIKS_3                     , Qt::Key_3);

    insert(DIKS_4                     , Qt::Key_4);

    insert(DIKS_5                     , Qt::Key_5);

    insert(DIKS_6                     , Qt::Key_6);

    insert(DIKS_7                     , Qt::Key_7);

    insert(DIKS_8                     , Qt::Key_8);

    insert(DIKS_9                     , Qt::Key_9);

    insert(DIKS_COLON                 , Qt::Key_Colon);

    insert(DIKS_SEMICOLON             , Qt::Key_Semicolon);

    insert(DIKS_LESS_THAN_SIGN        , Qt::Key_Less);

    insert(DIKS_EQUALS_SIGN           , Qt::Key_Equal);

    insert(DIKS_GREATER_THAN_SIGN     , Qt::Key_Greater);

    insert(DIKS_QUESTION_MARK         , Qt::Key_Question);

    insert(DIKS_AT                    , Qt::Key_At);

    insert(DIKS_CAPITAL_A             , Qt::Key_A);

    insert(DIKS_CAPITAL_B             , Qt::Key_B);

    insert(DIKS_CAPITAL_C             , Qt::Key_C);

    insert(DIKS_CAPITAL_D             , Qt::Key_D);

    insert(DIKS_CAPITAL_E             , Qt::Key_E);

    insert(DIKS_CAPITAL_F             , Qt::Key_F);

    insert(DIKS_CAPITAL_G             , Qt::Key_G);

    insert(DIKS_CAPITAL_H             , Qt::Key_H);

    insert(DIKS_CAPITAL_I             , Qt::Key_I);

    insert(DIKS_CAPITAL_J             , Qt::Key_J);

    insert(DIKS_CAPITAL_K             , Qt::Key_K);

    insert(DIKS_CAPITAL_L             , Qt::Key_L);

    insert(DIKS_CAPITAL_M             , Qt::Key_M);

    insert(DIKS_CAPITAL_N             , Qt::Key_N);

    insert(DIKS_CAPITAL_O             , Qt::Key_O);

    insert(DIKS_CAPITAL_P             , Qt::Key_P);

    insert(DIKS_CAPITAL_Q             , Qt::Key_Q);

    insert(DIKS_CAPITAL_R             , Qt::Key_R);

    insert(DIKS_CAPITAL_S             , Qt::Key_S);

    insert(DIKS_CAPITAL_T             , Qt::Key_T);

    insert(DIKS_CAPITAL_U             , Qt::Key_U);

    insert(DIKS_CAPITAL_V             , Qt::Key_V);

    insert(DIKS_CAPITAL_W             , Qt::Key_W);

    insert(DIKS_CAPITAL_X             , Qt::Key_X);

    insert(DIKS_CAPITAL_Y             , Qt::Key_Y);

    insert(DIKS_CAPITAL_Z             , Qt::Key_Z);

    insert(DIKS_SQUARE_BRACKET_LEFT   , Qt::Key_BracketLeft);

    insert(DIKS_BACKSLASH             , Qt::Key_Backslash);

    insert(DIKS_SQUARE_BRACKET_RIGHT  , Qt::Key_BracketRight);

    insert(DIKS_CIRCUMFLEX_ACCENT     , Qt::Key_AsciiCircum);

    insert(DIKS_UNDERSCORE            , Qt::Key_Underscore);

    insert(DIKS_SMALL_A               , Qt::Key_A);

    insert(DIKS_SMALL_B               , Qt::Key_B);

    insert(DIKS_SMALL_C               , Qt::Key_C);

    insert(DIKS_SMALL_D               , Qt::Key_D);

    insert(DIKS_SMALL_E               , Qt::Key_E);

    insert(DIKS_SMALL_F               , Qt::Key_F);

    insert(DIKS_SMALL_G               , Qt::Key_G);

    insert(DIKS_SMALL_H               , Qt::Key_H);

    insert(DIKS_SMALL_I               , Qt::Key_I);

    insert(DIKS_SMALL_J               , Qt::Key_J);

    insert(DIKS_SMALL_K               , Qt::Key_K);

    insert(DIKS_SMALL_L               , Qt::Key_L);

    insert(DIKS_SMALL_M               , Qt::Key_M);

    insert(DIKS_SMALL_N               , Qt::Key_N);

    insert(DIKS_SMALL_O               , Qt::Key_O);

    insert(DIKS_SMALL_P               , Qt::Key_P);

    insert(DIKS_SMALL_Q               , Qt::Key_Q);

    insert(DIKS_SMALL_R               , Qt::Key_R);

    insert(DIKS_SMALL_S               , Qt::Key_S);

    insert(DIKS_SMALL_T               , Qt::Key_T);

    insert(DIKS_SMALL_U               , Qt::Key_U);

    insert(DIKS_SMALL_V               , Qt::Key_V);

    insert(DIKS_SMALL_W               , Qt::Key_W);

    insert(DIKS_SMALL_X               , Qt::Key_X);

    insert(DIKS_SMALL_Y               , Qt::Key_Y);

    insert(DIKS_SMALL_Z               , Qt::Key_Z);

    insert(DIKS_CURLY_BRACKET_LEFT    , Qt::Key_BraceLeft);

    insert(DIKS_VERTICAL_BAR          , Qt::Key_Bar);

    insert(DIKS_CURLY_BRACKET_RIGHT   , Qt::Key_BraceRight);

    insert(DIKS_TILDE                 , Qt::Key_AsciiTilde);

}

QT_END_NAMESPACE

#include "qdirectfbkeyboard.moc"

#endif // QT_NO_QWS_DIRECTFB