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kdelibs'ImageSource (./kdelibs/khtml/misc/loader.cpp:124)

    class ImageSource : public QDataSource
    {
    public:
	ImageSource(QByteArray buf);
	~ImageSource();

	/**
	 * Overload QDataSource::readyToSend() and returns the number
	 * of bytes ready to send if not eof instead of returning -1.
	 */
	int readyToSend();

	/*!
	  Reads and sends a block of data.
	*/
	void sendTo(QDataSink*, int count);

	/*!
	  KHTMLImageSource's is rewindable.
	*/
	bool rewindable() const;

	/*!
	  Enables rewinding.  No special action is taken.
	*/
	void enableRewind(bool on);

	/*
	  Calls reset() on the QIODevice.
	*/
	void rewind();

	/**
	 * Sets the EOF state.
	 */
	void setEOF( bool state );

    private:

	QByteArray buffer;
	bool rew;
	int pos;
	bool eof;
    };

};

/*!
  This Class defines the DataSource for incremental loading of images.
*/
ImageSource::ImageSource(QByteArray buf)
{
  buffer = buf;
  rew = false;
  pos = 0;
  eof = false;
}

/*!
  Destroys the QIODeviceSource, deleting the QIODevice from which it was
  constructed.
*/
ImageSource::~ImageSource() {}

/**
 * Overload QDataSource::readyToSend() and returns the number
 * of bytes ready to send if not eof instead of returning -1.
*/
int ImageSource::readyToSend()
{
  int n = buffer.size() - pos;

  if ( !n && !eof )
    return n;

  return n ? n : -1;
}

/*!
  ImageSource's is rewindable.
*/
bool ImageSource::rewindable() const
{
    return TRUE;
}

/*!
  Enables rewinding.  No special action is taken.
*/
void ImageSource::enableRewind(bool on)
{
    rew = on;
}

/*
  Calls reset() on the QIODevice.
*/
void ImageSource::rewind()
{
  pos = 0;
  if (!rew) {
    QDataSource::rewind();
  } else
    ready();
}

/*!
  Reads and sends a block of data.
*/
void ImageSource::sendTo(QDataSink* sink, int n)
{
  sink->receive((const uchar*)&buffer.at(pos), n);

  pos += n;
}

/**
 * Sets the EOF state.
 */
void ImageSource::setEOF( bool state )
{
  eof = state;
}

// -------------------------------------------------------------------------------------

kdelibs'ImageSource::setEOF() (./kdelibs/khtml/misc/loader.cpp:243)

void ImageSource::setEOF( bool state )
{
  eof = state;
}

// -------------------------------------------------------------------------------------