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    41 

    42 #ifndef TRKDEVICE_H

    43 #define TRKDEVICE_H

    44 

    45 #include "symbianutils_global.h"

    46 #include "callback.h"

    47 

    48 #include <QtCore/QObject>

    49 #include <QtCore/QVariant>

    50 #include <QtCore/QByteArray>

    51 #include <QtCore/QSharedPointer>

    52 

    53 QT_BEGIN_NAMESPACE

    54 class QIODevice;

    55 QT_END_NAMESPACE

    56 

    57 namespace trk {

    58 

    59 struct TrkResult;

    60 struct TrkMessage;

    61 struct TrkDevicePrivate;

    62 

    63 /* TrkDevice: Implements a Windows COM or Linux device for

    64  * Trk communications. Provides synchronous write and asynchronous

    65  * read operation.

    66  * The serialFrames property specifies whether packets are encapsulated in

    67  * "0x90 <length>" frames, which is currently the case for serial ports. 

    68  * Contains a write message queue allowing

    69  * for queueing messages with a notification callback. If the message receives

    70  * an ACK, the callback is invoked.

    71  * The special message TRK_WRITE_QUEUE_NOOP_CODE code can be used for synchronisation.

    72  * The respective  message will not be sent, the callback is just invoked. */

    73 

    74 enum { TRK_WRITE_QUEUE_NOOP_CODE = 0x7f };

    75 

    76 typedef trk::Callback<const TrkResult &> TrkCallback;

    77 

    78 class SYMBIANUTILS_EXPORT TrkDevice : public QObject

    79 {

    80     Q_OBJECT

    81     Q_PROPERTY(bool serialFrame READ serialFrame WRITE setSerialFrame)

    82     Q_PROPERTY(bool verbose READ verbose WRITE setVerbose)

    83     Q_PROPERTY(QString port READ port WRITE setPort)

    84 public:

    85     explicit TrkDevice(QObject *parent = 0);

    86     virtual ~TrkDevice();

    87 

    88     bool open(QString *errorMessage);

    89     bool isOpen() const;

    90 

    91     QString port() const;

    92     void setPort(const QString &p);

    93 

    94     QString errorString() const;

    95 

    96     bool serialFrame() const;

    97     void setSerialFrame(bool f);

    98 

    99     int verbose() const;

   100     void setVerbose(int b);

   101 

   102     // Enqueue a message with a notification callback.

   103     void sendTrkMessage(unsigned char code,

   104                         TrkCallback callBack = TrkCallback(),

   105                         const QByteArray &data = QByteArray(),

   106                         const QVariant &cookie = QVariant());

   107 

   108     // Enqeue an initial ping

   109     void sendTrkInitialPing();

   110 

   111     // Send an Ack synchronously, bypassing the queue

   112     bool sendTrkAck(unsigned char token);

   113 

   114 signals:

   115     void messageReceived(const trk::TrkResult &result);

   116     // Emitted with the contents of messages enclosed in 07e, not for log output

   117     void rawDataReceived(const QByteArray &data);

   118     void error(const QString &msg);

   119     void logMessage(const QString &msg);

   120 

   121 private slots:

   122     void slotMessageReceived(const trk::TrkResult &result, const QByteArray &a);

   123 

   124 protected slots:

   125     void emitError(const QString &msg);

   126     void emitLogMessage(const QString &msg);

   127 

   128 public slots:

   129     void close();

   130 

   131 private:

   132     void readMessages();

   133     TrkDevicePrivate *d;

   134 };

   135 

   136 } // namespace trk

   137 

   138 #endif // TRKDEVICE_H