//**************************************************************************
//  FILENAME	:   RealImage.h
//
//  CLASSES		:   RealImage
//
//  ECOMPACS DICOM Network Transport Libraries * Version 0.1 Beta
//**************************************************************************

#ifndef	_DICOM_REALIMAGE_
#define	_DICOM_REALIMAGE_


#include "LookupTable.hpp"


class RealImage8;


//**************************************************************************
//          class RealImage
//**************************************************************************
class DICOM_API RealImage
{
public:
	enum			RotateAngle { alpha0, alpha90, alpha180, alpha270 };

	char			PhotometricInterpretation[65];
	int				NumberOfFrames;
	int				FrameIndex;
	int				PixelRepresentation;	// = 1 : signed, = 0 : unsigned

	LookupTable		LUT;
	RGBQUAD			Colors[256];

public:
	ImageProcess	* ImgProc;
	UINT32			lParam;

	UINT32			ImageHandle0;	// Used for display system, such as HBITMAP or HDIB
	UINT32			ImageHandle1;	// Used for display system, such as HPALETTE or Palette index
	UINT32			ImageHandle2;	// Other handles
	UINT32			ImageHandle3;

public:
	RealImage (
		int width, int height, int depth,
		int min, int max,
    	int minSet, int maxSet,
		float offset = 0, float slope = 1);

	RealImage (const RealImage & OrgRealImage);

	virtual ~RealImage ();

	//************************************************************************
	// Purpose: to get the 8 bits image (240 gray levels) from the image data.
	//************************************************************************
	virtual unsigned char * GetPixmap (BOOL relativMode) const = 0;
	virtual unsigned char * GetPixmap (unsigned char *colortable) const = 0;
	virtual unsigned char * GetPixmapEx (unsigned char *colortable) const = 0;
	virtual unsigned char * GetPixmap (void) const = 0;
	virtual RealImage8 * Remap (void) const ;


	virtual void Invert ();								// invert the original image

	virtual	void FlipVertical   (void) = 0;
	virtual	void FlipHorizontal (void) = 0;
	virtual void Rotate (RotateAngle angle) = 0;		// rotates the original image

	int		GetMinImage () const {return MinImage;};	// gets the minimum pixel value of the image
	int		GetMaxImage () const {return MaxImage;};

	int		GetMinSet () const {return MinSet;};		// gets the minimum pixel value of the image
	int		GetMaxSet () const {return MaxSet;};

	int		GetDepth () const {return Depth;};			// gets the depth

	int		GetWidth () const {return Width; };			// gets the width
	int		GetHeight() const {return Height;};

	float	GetIntercept() const {return Intercept;};	// gets the Intercept from 0 (pixel value)
	float	GetSlope () const {return Slope;};			// get the slope of the gray levels

	//************************************************************************
	// Purpose: returns the value of pixel (x,y).
	// Purpose: set the value of pixel (x,y).
	//************************************************************************
	virtual int  GetPixelValue (int x, int y) const = 0;
	virtual void SetPixelValue (int x, int y, short val) = 0;

	//************************************************************************
	// Purpose: returns the value of pixel (x,y) without calibration factor
	// Purpose: set the value of pixel (x,y) without calibration factor
	//************************************************************************
	virtual short GetInternalPixel (int x, int y) const = 0;
	virtual void  SetInternalPixel (int x, int y, short val) = 0;

	//************************************************************************
	// Purpose: an abstract method for returning a image.
	//************************************************************************
	virtual unsigned short * GetImage () const = 0;
	virtual UINT32 GetImageLength () const = 0;

	virtual unsigned short * Attach (void * PixelData) = 0;
	virtual unsigned short * Detach () = 0;

	virtual RealImage * GetImagePart (const DRect * lpRect) const = 0;

	// (x, y) is top-left corner
	virtual BOOL SetImagePart (int x, int y, const RealImage * realImage, int nOPCode = 0) = 0;

	virtual BOOL SaveAsWindowsBitmap (const char * filename) const = 0;
	virtual BOOL SaveAsRaw (const char * filename) const = 0;

	virtual void Scale (UINT NewWidth, UINT NewHeight) = 0;

	virtual void CalcHistogram (UINT32 HistogramData[256]) ;
	virtual void CalcMinMaxPixelValue (void) ;

	virtual	HANDLE  CreateDIB (void) const = 0;
	virtual HBITMAP CreateBitmap (void) const = 0;

private:
	friend class ImageProcess;
	friend class DICOMImage;

protected:
	int				Width;
	int				Height;
	int				Depth;

	float			Intercept;	// intercept from 0
	float			Slope;		// factor

	int				MinImage;	// min pixel raw value of the image
	int				MaxImage;	// max pixel raw value of the image
	int				MinSet;		// min pixel value of the set of images
	int				MaxSet;		// max pixel value of the set of images
};

#endif	// _DICOM_REALIMAGE_