/*
 *
 *  Copyright (C) 1996-2011, OFFIS e.V.
 *  All rights reserved.  See COPYRIGHT file for details.
 *
 *  This software and supporting documentation were developed by
 *
 *    OFFIS e.V.
 *    R&D Division Health
 *    Escherweg 2
 *    D-26121 Oldenburg, Germany
 *
 *
 *  Module:  dcmimgle
 *
 *  Author:  Joerg Riesmeier
 *
 *  Purpose: DicomOverlayData (Header)
 *
 */


#ifndef DIOVDAT_H
#define DIOVDAT_H

#include "dcmtk/config/osconfig.h"

#include "dcmtk/dcmimgle/diobjcou.h"


/*------------------------*
 *  forward declarations  *
 *------------------------*/

class DiOverlay;
class DiOverlayPlane;


/*-------------------------------*
 *  declaration of helper class  *
 *-------------------------------*/

/** Class to handle overlay pixel data
 */
class DCMTK_DCMIMGLE_EXPORT DiOverlayData
  : public DiObjectCounter
{

    friend class DiOverlay;

 public:

    /** constructor
     *
     ** @param  entries  number of array entries
     *  @param  count    number of valid overlay planes
     */
    DiOverlayData(unsigned int entries,
                  unsigned int count = 0);

    /** destructor
     */
    virtual ~DiOverlayData();


 private:

    /// number of (valid) overlay planes
    unsigned int Count;
    /// number of array entries (allocated memory)
    unsigned int ArrayEntries;

    /// pointer to an array of planes
    DiOverlayPlane **Planes;
    /// pointer to overlay data (if scaled, flipped or rotated)
    Uint16 *DataBuffer;

 // --- declarations to avoid compiler warnings

    DiOverlayData(const DiOverlayData &);
    DiOverlayData &operator=(const DiOverlayData &);
};


#endif