// This may look like C code, but it is really -*- C++ -*-

//

// Copyright Bob Friesenhahn, 1999, 2000, 2001, 2002

//

// Implementation of ImageRef

//

// This is an internal implementation class.

//

#define MAGICK_IMPLEMENTATION

#define MAGICK_PLUSPLUS_IMPLEMENTATION

#include "Magick++/ImageRef.h"

#include "Magick++/Exception.h"

#include "Magick++/Options.h"

// Construct with an image and default options

Magick::ImageRef::ImageRef ( MagickLib::Image * image_ )

  : _image(image_),

    _options(new Options),

    _id(-1),

    _refCount(1),

    _mutexLock()

{

}

// Construct with an image and options

// Inserts Image* in image, but copies Options into image.

Magick::ImageRef::ImageRef ( MagickLib::Image * image_,

                             const Options * options_ )

  : _image(image_),

    _options(0),

    _id(-1),

    _refCount(1),

    _mutexLock()

{

  _options = new Options( *options_ );

}

// Default constructor

Magick::ImageRef::ImageRef ( void )

  : _image(0),

    _options(new Options),

    _id(-1),

    _refCount(1),

    _mutexLock()

{

  // Allocate default image

  _image = AllocateImage( _options->imageInfo() );

  // Test for error and throw exception (like throwImageException())

  throwException(_image->exception);

}

// Destructor

Magick::ImageRef::~ImageRef( void )

{

  // Unregister image (if still registered)

  if( _id > -1 )

    {

      DeleteMagickRegistry( _id );

      _id=-1;

    }

  // Deallocate image

  if ( _image )

    {

      DestroyImageList( _image );

      _image = 0;

    }

  // Deallocate image options

  delete _options;

  _options = 0;

}

// Assign image to reference

void Magick::ImageRef::image ( MagickLib::Image * image_ )

{

  if(_image)

    DestroyImageList( _image );

  _image = image_;

}

// Assign options to reference

void  Magick::ImageRef::options ( Magick::Options * options_ )

{

  delete _options;

  _options = options_;

}

// Assign registration id to reference

void Magick::ImageRef::id ( const long id_ )

{

  if( _id > -1 )

    DeleteMagickRegistry( _id );

  _id = id_;

}