HbNvgIconData(quint32 length = 0);

    ~HbNvgIconData();

    qint32 encodeUint8(quint8 aVal)

    {

        return encodeData(&aVal, sizeof(aVal));

    }

    qint32 encodeUint16(quint16 aVal)

    {

        return encodeData(&aVal, sizeof(aVal));

    }

    qint32 encodeUint32(quint32 aVal)

    {

        return encodeData(&aVal, sizeof(aVal));

    }

    int encodeReal32(float aVal)

    {

        return encodeData(&aVal, sizeof(aVal));

    }

    qint32 encodeReal64(double aVal)

    {

        return encodeData(&aVal, sizeof(aVal));

    }

    qint32 encodeData(const void *data, quint32 length);

    void read(quint8 *ptr, qint32 length);

    qint32 readPos() const

    {

        return totalRead;

    }

    void skip(qint32 length);

    bool eof() const

    {

        return (totalRead >= dataSize);

    }

    qint32 dataLength() const

    {

        return dataSize;

    }

    void checkOutOfBound(qint32 length)

    {

        if (totalRead + length > dataSize ||

                totalRead + length < 0){

            throw HbNvgException(HbNvgEngine::NvgErrEof);

        }

    }

    qint32                totalRead;

    qint32                dataSize;

{

#define DEREF_PTR(TOTYPE, Offset, Size) do {\

                                checkOutOfBound(Offset + Size); \

                                return * (TOTYPE *)&mReadStream[mTotalRead + Offset];\

                           } while (0)

    HbDereferencer(quint8* buf, qint32 length)

        : mTotalRead(0),

        mDataLength(length),

        mReadStream((unsigned char*)buf)

    {

    }

    HbDereferencer(const QByteArray& buffer)

            : mTotalRead(0),

            mDataLength(buffer.length()),

            mReadStream((unsigned char*)buffer.data())

    {        

    }

    void skip(qint32 length)

    {

        checkOutOfBound(length);

        mTotalRead += length;

    }

    qint16 derefInt16(qint16 at = 0)

    {

        DEREF_PTR(qint16, at, sizeof(qint16));

    }

    operator qint16()

    {

        return derefInt16();    

    }

    qint32 derefInt32(qint32 at = 0)

    {

        DEREF_PTR(qint32, at, sizeof(qint32));

    }

    operator qint32()

    {

        return derefInt32();    

    }

    qint8 derefInt8(qint32 at = 0)

    {

        DEREF_PTR(qint8, at, sizeof(qint8));

    }

    operator qint8()

    {

        return derefInt8();    

    }

    quint8* derefInt8Array(qint32 length, qint32 at = 0)

    {

        checkOutOfBound(at + length);

        return (quint8 *)&mReadStream[mTotalRead + at];

    }

    float derefReal32(qint32 at = 0)

    {

        DEREF_PTR(float, at, sizeof(float));

    }

    operator float()

    {

        return derefReal32();

    }

    void assertBound(qint32 length, qint32 at = 0)

    {

        checkOutOfBound(at + length);

    }

    quint8* getPtr() const

    {

        return mReadStream;

    }

    qint32 getLength() const

    {

        return mDataLength;

    }

    qint32 getReadingPos() const

    {

        return mTotalRead;

    }

private:

    void checkOutOfBound(qint32 length)

    {

        if (mTotalRead + length > mDataLength ||

                mTotalRead + length < 0){

            throw HbNvgException(HbNvgEngine::NvgErrEof);

        }

    }

    qint32                mTotalRead;

    qint32                mDataLength;

};