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#include "qkbdum_qws.h"

#include "qvfbhdr.h"

#if !defined(QT_NO_QWS_KEYBOARD) && !defined(QT_NO_QWS_KBD_UM)

#include <stdlib.h>

#include <sys/types.h>

#include <sys/stat.h>

#include <unistd.h>

#include <fcntl.h>

#include <errno.h>

#include <qstring.h>

#include <qwindowsystem_qws.h>

#include <qsocketnotifier.h>

#include "qplatformdefs.h"

QT_BEGIN_NAMESPACE

class QWSUmKeyboardHandlerPrivate : public QObject

{

    Q_OBJECT

public:

    QWSUmKeyboardHandlerPrivate(const QString&);

    ~QWSUmKeyboardHandlerPrivate();

private slots:

    void readKeyboardData();

private:

    int kbdFD;

    int kbdIdx;

    const int kbdBufferLen;

    unsigned char *kbdBuffer;

    QSocketNotifier *notifier;

};

QWSUmKeyboardHandlerPrivate::QWSUmKeyboardHandlerPrivate(const QString &device)

    : kbdFD(-1), kbdIdx(0), kbdBufferLen(sizeof(QVFbKeyData)*5)

{

    kbdBuffer = new unsigned char [kbdBufferLen];

    if ((kbdFD = QT_OPEN((const char *)device.toLocal8Bit(), O_RDONLY | O_NDELAY, 0)) < 0) {

        qDebug("Cannot open %s (%s)", (const char *)device.toLocal8Bit(),

        strerror(errno));

    } else {

        // Clear pending input

        char buf[2];

        while (QT_READ(kbdFD, buf, 1) > 0) { }

        notifier = new QSocketNotifier(kbdFD, QSocketNotifier::Read, this);

        connect(notifier, SIGNAL(activated(int)),this, SLOT(readKeyboardData()));

    }

}

QWSUmKeyboardHandlerPrivate::~QWSUmKeyboardHandlerPrivate()

{

    if (kbdFD >= 0)

        QT_CLOSE(kbdFD);

    delete [] kbdBuffer;

}

void QWSUmKeyboardHandlerPrivate::readKeyboardData()

{

    int n;

    do {

        n  = QT_READ(kbdFD, kbdBuffer+kbdIdx, kbdBufferLen - kbdIdx);

        if (n > 0)

            kbdIdx += n;

    } while (n > 0);

    int idx = 0;

    while (kbdIdx - idx >= (int)sizeof(QVFbKeyData)) {

        QVFbKeyData *kd = (QVFbKeyData *)(kbdBuffer + idx);

        // Qtopia Key filters must still work.

        QWSServer::processKeyEvent(kd->unicode, kd->keycode, kd->modifiers, kd->press, kd->repeat);

        idx += sizeof(QVFbKeyData);

    }

    int surplus = kbdIdx - idx;

    for (int i = 0; i < surplus; i++)

        kbdBuffer[i] = kbdBuffer[idx+i];

    kbdIdx = surplus;

}

QWSUmKeyboardHandler::QWSUmKeyboardHandler(const QString &device)

    : QWSKeyboardHandler()

{

    d = new QWSUmKeyboardHandlerPrivate(device);

}

QWSUmKeyboardHandler::~QWSUmKeyboardHandler()

{

    delete d;

}

QT_END_NAMESPACE

#include "qkbdum_qws.moc"

#endif // QT_NO_QWS_KEYBOARD && QT_NO_QWS_KBD_UM