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/* 
 * File:	cimageb.h 
 * Purpose:	Declaration of the Platform Independent Image Class 
 * Author:	Alejandro Aguilar Sierra 
 * Created:	1995 
 * Description: This class adds drawing routines and color map management. 
 * 
 * Copyright:	(c) 1995, Alejandro Aguilar Sierra  
 */ 
#ifndef CIMAGEBH 
#define CIMAGEBH 
 
#include "stdafx.h" 
#include "cmap.h" 
 
#define CIMAGE_COLORS DIB_PAL_COLORS 
 
#define CIMAGE_SUPPORT_BMP 1 
#define CIMAGE_SUPPORT_GIF 1 
#define CIMAGE_SUPPORT_JPEG 1 
#define CIMAGE_SUPPORT_PNG  1 
#define CIMAGE_SUPPORT_XPM  1 
 
#ifndef byte 
typedef unsigned char byte; 
#endif 
 
#ifdef WIN32 
typedef byte* ImagePointerType; 
#else 
typedef byte huge* ImagePointerType; 
#endif 
 
typedef struct 
{ 
	byte red; 
	byte green; 
	byte blue; 
} rgb_color_struct; 
 
#ifndef byte 
typedef unsigned char byte; 
#endif 
 
#define COLORTYPE_PALETTE	1 
#define COLORTYPE_COLOR		2 
#define COLORTYPE_ALPHA		4 
 
class CImageImpl 
{ 
protected: 
	ImagePointerType RawImage;  		//  Image data 
 
	int Width, Height;   		//  Dimensions 
	int Depth;	 				// (bits x pixel) 
	int ColorType;				// Bit 1 = Palette used 
									// Bit 2 = Color used 
									// Bit 3 = Alpha used 
 
	long EffWidth;	 			// Effective Width 
	LPBITMAPINFOHEADER lpbi; 
	int bgindex; 
	CImagePalette* imagePalette; 
 
friend class CImageIterator; 
public: 
	// Constructors 
	CImageImpl(); 
	CImageImpl(int width, int height, int depth, int colortype=-1); 
	CImageImpl( const CImageImpl* ima ); 
 
	// Destructor 
	virtual ~CImageImpl(); 
 
	//  Image Information 
	int  GetWidth() const     { return Width; }; 
	int  GetHeight() const    { return Height; }; 
	int  GetDepth() const     { return Depth; }; 
	int  GetColorType() const { return ColorType; }; 
 
	virtual BOOL Inside(int x, int y); 
 
	virtual void Create(int width, int height, int deep, int colortype=-1); 
 
	// Drawing routines 
	BOOL Draw(CDC* dc, int x=0, int y=0, int dx=-1, int dy=-1, int xs=0, int ys=0); 
	BOOL Stretch(CDC* dc, int xd=0, int yd=0, int dxd=-1, int dyd=-1, 
		int xs=0, int ys=0, int dxs=-1, int dys=-1); 
 
	virtual int  GetIndex(int x, int y); 
	virtual BOOL GetRGB(int x, int y, byte* r, byte* g, byte* b); 
 
	virtual BOOL SetIndex(int x, int y, int index); 
	virtual BOOL SetRGB(int x, int y, byte r, byte g, byte b); 
 
	// ColorMap settings 
	BOOL SetPalette(CImagePalette* palette); 
	BOOL SetPalette(int n, rgb_color_struct* rgb_struct); 
	BOOL SetPalette(int n, byte* r, byte* g=0, byte* b=0); 
	CImagePalette* GetPalette() const { return imagePalette; } 
   
	inline ImagePointerType GetRawImage() { return RawImage; } 
	inline LPBITMAPINFOHEADER GetBits() { return lpbi; } 
	inline long GetEffWidth() { return EffWidth; } 
 
	virtual BOOL ReadFile(const CString& /*imageFileName*/=_T("")) { return FALSE; } 
	virtual BOOL SaveFile(const CString& /*imageFileName*/=_T("")) { return FALSE; } 
 
	// 'Copy' the raw image data et. from 'from' to 'this'. NULLify these attributes 
	// in 'from' so we can then delete it without deleting the raw image data. 
	void TransferBits(CImageImpl* from); 
}; 
 
 
inline 
CImageImpl::CImageImpl() : /*ImaBase(),*/ imagePalette(0), lpbi(0) 
{ 
	RawImage = 0;  
	Width = Height = 0; 
	Depth = 0; 
	ColorType = 0; 
	bgindex = -1; 
} 
 
inline 
CImageImpl::CImageImpl(int width, int height, int depth, int colortype) : imagePalette(0), lpbi(0) 
{ 
	Width = Height = 0; 
	Depth = 0; 
	ColorType = 0; 
	bgindex = -1; 
	RawImage = 0; 
	Create(width, height, depth, colortype); 
} 
 
 
inline 
CImageImpl::CImageImpl( const CImageImpl *ima ) : imagePalette(0), lpbi(0) 
{ 
	bgindex = -1; 
 
	if (ima)  
	{ 
		Create(ima->GetWidth(), ima->GetHeight(), ima->GetDepth(), ima->GetColorType()); 
		if (ima->GetPalette()) 
			SetPalette(new CImagePalette(ima->GetPalette())); 
	} 
} 
 
inline 
BOOL CImageImpl::Inside(int x, int y) 
{ 
	return (0<=y && y