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#include "qkbdqnx_qws.h"

#include "QtCore/qsocketnotifier.h"

#include "QtCore/qdebug.h"

#include <sys/dcmd_input.h>

#include <photon/keycodes.h>

#include "qplatformdefs.h"

#include <errno.h>

QT_BEGIN_NAMESPACE

/*!

    \class QWSQnxKeyboardHandler

    \preliminary

    \ingroup qws

    \since 4.6

    \internal

    \brief The QWSQnxKeyboardHandler class implements a keyboard driver

    for the QNX \c{devi-hid} input manager.

    To be able to compile this mouse handler, \l{Qt for Embedded Linux}

    must be configured with the \c -qt-kbd-qnx option, see the

    \l{Qt for Embedded Linux Character Input} documentation for details.

    In order to use this keyboard handler, the \c{devi-hid} input manager

    must be set up and run with the resource manager interface (option \c{-r}).

    Also, Photon must not be running.

    Example invocation from command line: \c{/usr/photon/bin/devi-hid -Pr kbd mouse}

    Note that after running \c{devi-hid}, you will not be able to use the local

    shell anymore. It is suggested to run the command in a shell scrip, that launches

    a Qt application after invocation of \c{devi-hid}.

    To make \l{Qt for Embedded Linux} explicitly choose the qnx keyboard

    handler, set the QWS_KEYBOARD environment variable to \c{qnx}. By default,

    the first keyboard device (\c{/dev/devi/keyboard0}) is used. To override, pass a device

    name as the first and only parameter, for example

    \c{QWS_KEYBOARD=qnx:/dev/devi/keyboard1; export QWS_KEYBOARD}.

    \sa {Qt for Embedded Linux Character Input}, {Qt for Embedded Linux}

*/

/*!

    Constructs a keyboard handler for the specified \a device, defaulting to

    \c{/dev/devi/keyboard0}.

    Note that you should never instanciate this class, instead let QKbdDriverFactory

    handle the keyboard handlers.

    \sa QKbdDriverFactory

 */

QWSQnxKeyboardHandler::QWSQnxKeyboardHandler(const QString &device)

{

    // open the keyboard device

    keyboardFD = QT_OPEN(device.isEmpty() ? "/dev/devi/keyboard0" : device.toLatin1().constData(),

                         QT_OPEN_RDONLY);

    if (keyboardFD == -1) {

        qErrnoWarning(errno, "QWSQnxKeyboardHandler: Unable to open device");

        return;

    }

    // create a socket notifier so we'll wake up whenever keyboard input is detected.

    QSocketNotifier *notifier = new QSocketNotifier(keyboardFD, QSocketNotifier::Read, this);

    connect(notifier, SIGNAL(activated(int)), SLOT(socketActivated()));

    qDebug() << "QWSQnxKeyboardHandler: connected.";

}

/*!

    Destroys this keyboard handler and closes the connection to the keyboard device.

 */

QWSQnxKeyboardHandler::~QWSQnxKeyboardHandler()

{

    QT_CLOSE(keyboardFD);

}

/*! \internal

    Translates the QNX keyboard events to Qt keyboard events

 */

void QWSQnxKeyboardHandler::socketActivated()

{

    _keyboard_packet packet;

    // read one keyboard event

    int bytesRead = QT_READ(keyboardFD, &packet, sizeof(_keyboard_packet));

    if (bytesRead == -1) {

        qErrnoWarning(errno, "QWSQnxKeyboardHandler::socketActivated(): Unable to read data.");

        return;

    }

    // the bytes read must be the size of a keyboard packet

    Q_ASSERT(bytesRead == sizeof(_keyboard_packet));

#if 0

    qDebug() << "keyboard got scancode"

             << hex << packet.data.modifiers

             << packet.data.flags

             << packet.data.key_cap

             << packet.data.key_sym

             << packet.data.key_scan;

#endif

    // QNX is nice enough to translate the raw keyboard data into a QNX data structure

    // Now we just have to translate it into a format Qt understands.

    // figure out whether it's a press

    bool isPress = packet.data.key_cap & KEY_DOWN;

    // figure out wheter the key is still pressed and the key event is repeated

    bool isRepeat = packet.data.key_cap & KEY_REPEAT;

    Qt::Key key = Qt::Key_unknown;

    int unicode = 0xffff;

    // TODO - this switch is not complete!

    switch (packet.data.key_scan) {

    case KEYCODE_SPACE: key = Qt::Key_Space; unicode = 0x20; break;

    case KEYCODE_F1: key = Qt::Key_F1; break;

    case KEYCODE_F2: key = Qt::Key_F2; break;

    case KEYCODE_F3: key = Qt::Key_F3; break;

    case KEYCODE_F4: key = Qt::Key_F4; break;

    case KEYCODE_F5: key = Qt::Key_F5; break;

    case KEYCODE_F6: key = Qt::Key_F6; break;

    case KEYCODE_F7: key = Qt::Key_F7; break;

    case KEYCODE_F8: key = Qt::Key_F8; break;

    case KEYCODE_F9: key = Qt::Key_F9; break;

    case KEYCODE_F10: key = Qt::Key_F10; break;

    case KEYCODE_F11: key = Qt::Key_F11; break;

    case KEYCODE_F12: key = Qt::Key_F12; break;

    case KEYCODE_BACKSPACE: key = Qt::Key_Backspace; break;

    case KEYCODE_TAB: key = Qt::Key_Tab; break;

    case KEYCODE_RETURN: key = Qt::Key_Return; break;

    case KEYCODE_KP_ENTER: key = Qt::Key_Enter; break;

    case KEYCODE_UP:

    case KEYCODE_KP_UP:

        key = Qt::Key_Up; break;

    case KEYCODE_DOWN:

    case KEYCODE_KP_DOWN:

        key = Qt::Key_Down; break;

    case KEYCODE_LEFT:

    case KEYCODE_KP_LEFT:

        key = Qt::Key_Left; break;

    case KEYCODE_RIGHT:

    case KEYCODE_KP_RIGHT:

        key = Qt::Key_Right; break;

    case KEYCODE_HOME:

    case KEYCODE_KP_HOME:

        key = Qt::Key_Home; break;

    case KEYCODE_END:

    case KEYCODE_KP_END:

        key = Qt::Key_End; break;

    case KEYCODE_PG_UP:

    case KEYCODE_KP_PG_UP:

        key = Qt::Key_PageUp; break;

    case KEYCODE_PG_DOWN:

    case KEYCODE_KP_PG_DOWN:

        key = Qt::Key_PageDown; break;

    case KEYCODE_INSERT:

    case KEYCODE_KP_INSERT:

        key = Qt::Key_Insert; break;

    case KEYCODE_DELETE:

    case KEYCODE_KP_DELETE:

        key = Qt::Key_Delete; break;

    case KEYCODE_ESCAPE:

        key = Qt::Key_Escape; break;

    default: // none of the above, try the key_scan directly

        unicode = packet.data.key_scan;

        break;

    }

    // figure out the modifiers that are currently pressed

    Qt::KeyboardModifiers modifiers = Qt::NoModifier;

    if (packet.data.flags & KEYMOD_SHIFT)

        modifiers |= Qt::ShiftModifier;

    if (packet.data.flags & KEYMOD_CTRL)

        modifiers |= Qt::ControlModifier;

    if (packet.data.flags & KEYMOD_ALT)

        modifiers |= Qt::AltModifier;

    // if the unicode value is not ascii, we ignore it.

    // TODO - do a complete mapping between all QNX scan codes and Qt codes

    if (unicode != 0xffff && !isascii(unicode))

        return; // unprintable character

    // call processKeyEvent. This is where all the magic happens to insert a

    // key event into Qt's event loop.

    // Note that for repeated key events, isPress must be true

    // (on QNX, isPress is not set when the key event is repeated).

    processKeyEvent(unicode, key, modifiers, isPress || isRepeat, isRepeat);

}

QT_END_NAMESPACE