/*
 * File:	ximage.h
 * Purpose:	General Purpose Image Class 
 */
/*
  --------------------------------------------------------------------------------

	COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:

	CxImage version 5.99c 17/Oct/2004

	CxImage : Copyright (C) 2001 - 2004, Davide Pizzolato

	Original CImage and CImageIterator implementation are:
	Copyright (C) 1995, Alejandro Aguilar Sierra (asierra(at)servidor(dot)unam(dot)mx)

	Covered code is provided under this license on an "as is" basis, without warranty
	of any kind, either expressed or implied, including, without limitation, warranties
	that the covered code is free of defects, merchantable, fit for a particular purpose
	or non-infringing. The entire risk as to the quality and performance of the covered
	code is with you. Should any covered code prove defective in any respect, you (not
	the initial developer or any other contributor) assume the cost of any necessary
	servicing, repair or correction. This disclaimer of warranty constitutes an essential
	part of this license. No use of any covered code is authorized hereunder except under
	this disclaimer.

	Permission is hereby granted to use, copy, modify, and distribute this
	source code, or portions hereof, for any purpose, including commercial applications,
	freely and without fee, subject to the following restrictions: 

	1. The origin of this software must not be misrepresented; you must not
	claim that you wrote the original software. If you use this software
	in a product, an acknowledgment in the product documentation would be
	appreciated but is not required.

	2. Altered source versions must be plainly marked as such, and must not be
	misrepresented as being the original software.

	3. This notice may not be removed or altered from any source distribution.

  --------------------------------------------------------------------------------

	Other information: about CxImage, and the latest version, can be found at the
	CxImage home page: http://www.xdp.it

  --------------------------------------------------------------------------------
 */
#if !defined(__CXIMAGE_H)
#define __CXIMAGE_H

#if _MSC_VER > 1000
#pragma once
#endif 

/////////////////////////////////////////////////////////////////////////////
#include "xfile.h"
#include "xiofile.h"
#include "xmemfile.h"
#include "ximadef.h"	//<vho> adjust some #define


extern "C" {
// #include   "../jpeg/jpeglib.h"	//為了使用jvirt_barray_ptr結構
}


/* see "ximacfg.h" for CxImage configuration options */

/////////////////////////////////////////////////////////////////////////////
// CxImage formats enumerator
enum ENUM_CXIMAGE_FORMATS{
CXIMAGE_FORMAT_UNKNOWN,
#if CXIMAGE_SUPPORT_BMP
CXIMAGE_FORMAT_BMP,
#endif
#if CXIMAGE_SUPPORT_GIF
CXIMAGE_FORMAT_GIF,
#endif
#if CXIMAGE_SUPPORT_JPG
CXIMAGE_FORMAT_JPG,
#endif
#if CXIMAGE_SUPPORT_PNG
CXIMAGE_FORMAT_PNG,
#endif
#if CXIMAGE_SUPPORT_MNG
CXIMAGE_FORMAT_MNG,
#endif
#if CXIMAGE_SUPPORT_ICO
CXIMAGE_FORMAT_ICO,
#endif
#if CXIMAGE_SUPPORT_TIF
CXIMAGE_FORMAT_TIF,
#endif
#if CXIMAGE_SUPPORT_TGA
CXIMAGE_FORMAT_TGA,
#endif
#if CXIMAGE_SUPPORT_PCX
CXIMAGE_FORMAT_PCX,
#endif
#if CXIMAGE_SUPPORT_WBMP
CXIMAGE_FORMAT_WBMP,
#endif
#if CXIMAGE_SUPPORT_WMF
CXIMAGE_FORMAT_WMF,
#endif
#if CXIMAGE_SUPPORT_J2K
CXIMAGE_FORMAT_J2K,
#endif
#if CXIMAGE_SUPPORT_JBG
CXIMAGE_FORMAT_JBG,
#endif
#if CXIMAGE_SUPPORT_JP2
CXIMAGE_FORMAT_JP2,
#endif
#if CXIMAGE_SUPPORT_JPC
CXIMAGE_FORMAT_JPC,
#endif
#if CXIMAGE_SUPPORT_PGX
CXIMAGE_FORMAT_PGX,
#endif
#if CXIMAGE_SUPPORT_PNM
CXIMAGE_FORMAT_PNM,
#endif
#if CXIMAGE_SUPPORT_RAS
CXIMAGE_FORMAT_RAS,
#endif
CMAX_IMAGE_FORMATS
};
typedef unsigned char boolean;

struct My_jvirt_sarray_control {
  short ** mem_buffer;	/* => the in-memory buffer */
  unsigned int rows_in_array;	/* total virtual array height */
  unsigned int samplesperrow;	/* width of array (and of memory buffer) */
  unsigned int maxaccess;		/* max rows accessed by access_virt_sarray */
  unsigned int rows_in_mem;	/* height of memory buffer */
  unsigned int rowsperchunk;	/* allocation chunk size in mem_buffer */
  unsigned int cur_start_row;	/* first logical row # in the buffer */
  unsigned int first_undef_row;	/* row # of first uninitialized row */
  boolean pre_zero;		/* pre-zero mode requested? */
  boolean dirty;		/* do current buffer contents need written? */
  boolean b_s_open;		/* is backing-store data valid? */
  struct jvirt_sarray_control* next;	/* link to next virtual sarray control block */
  char b_s_info[80];				//根據實際計算,得出backing_store_info的大小是80字節
  //backing_store_info b_s_info;	/* System-dependent control info */
};

typedef struct My_jvirt_sarray_control*  My_jvirt_barray_ptr;


/////////////////////////////////////////////////////////////////////////////
// CxImage class
/////////////////////////////////////////////////////////////////////////////
class DLL_EXP CxImage
{

//extensible information collector
typedef struct tagCxImageInfo {
	DWORD	dwEffWidth;			///< DWORD aligned scan line width
	BYTE*	pImage;				///< THE IMAGE BITS
	CxImage* pGhost;			///< if this is a ghost, pGhost points to the body
	CxImage* pParent;			///< if this is a layer, pParent points to the body
	DWORD	dwType;				///< original image format
	char	szLastError[256];	///< debugging
	long	nProgress;			///< monitor
	long	nEscape;			///< escape
	long	nBkgndIndex;		///< used for GIF, PNG, MNG
	RGBQUAD nBkgndColor;		///< used for RGB transparency
	BYTE	nQuality;			///< used for JPEG
	BYTE	nJpegScale;			///< used for JPEG [ignacio]
	long	nFrame;				///< used for TIF, GIF, MNG : actual frame
	long	nNumFrames;			///< used for TIF, GIF, MNG : total number of frames
	DWORD	dwFrameDelay;		///< used for GIF, MNG
	long	xDPI;				///< horizontal resolution
	long	yDPI;				///< vertical resolution
	RECT	rSelectionBox;		///< bounding rectangle
	BYTE	nAlphaMax;			///< max opacity (fade)
	bool	bAlphaPaletteEnabled; ///< true if alpha values in the palette are enabled.
	bool	bEnabled;			///< enables the painting functions
	long	xOffset;
	long	yOffset;
	DWORD	dwCodecOpt[CMAX_IMAGE_FORMATS];	///< for GIF, TIF : 0=def.1=unc,2=fax3,3=fax4,4=pack,5=jpg
	RGBQUAD last_c;				///< for GetNearestIndex optimization
	BYTE	last_c_index;
	bool	last_c_isvalid;
	long	nNumLayers;
	DWORD	dwFlags;			///< 0x??00000 = reserved, 0x00??0000 = blend mode, 0x0000???? = layer id - user flags


	//add by stoneclever 2005-04-26
	//為了可以直接讀取DCT系數及量化矩陣

	UINT stone_q1[64];			//保存讀文件時使用的量化系數,灰度圖使用q1
	UINT stone_q2[64];			//彩色圖使用1~3
	UINT stone_q3[64];	
	
	TCHAR filename[FILENAME_MAX+8];	//保存該圖像對應的文件名,這里加8是因為由于
									//CxImage庫中好像要求CXIMAGEINFO達到一定的規格,
									//否則就會引起整個庫出現一些問題

	My_jvirt_barray_ptr * coef_arrays;	//保存DCT系數的指針

	CxImage * pImaJpg;				//保存中間臨時變量,在直接讀取JPG圖像時有用(為了釋放的方便)

} CXIMAGEINFO;

public:
	//public structures
struct rgb_color { BYTE r,g,b; };

#if CXIMAGE_SUPPORT_WINDOWS
// <VATI> text placement data
// members must be initialized with the InitTextInfo(&this) function.
typedef struct tagCxTextInfo
{
	TCHAR    text[4096]; ///< text (char -> TCHAR for UNICODE [Cesar M])
	LOGFONT  lfont;      ///< font and codepage data
    COLORREF fcolor;     ///< foreground color
    long     align;      ///< DT_CENTER, DT_RIGHT, DT_LEFT aligment for multiline text
    BYTE     opaque;     ///< text has background or hasn't. Default is true.
						 ///< data for background (ignored if .opaque==FALSE) 
    COLORREF bcolor;     ///< background color
    float    b_opacity;  ///< opacity value for background between 0.0-1.0 Default is 0. (opaque)
    BYTE     b_outline;  ///< outline width for background (zero: no outline)
    BYTE     b_round;    ///< rounding radius for background rectangle. % of the height, between 0-50. Default is 10.
                         ///< (backgr. always has a frame: width = 3 pixel + 10% of height by default.)
} CXTEXTINFO;
#endif

public:
/** \addtogroup Constructors */ //@{
	CxImage(DWORD imagetype = 0);
	CxImage(DWORD dwWidth, DWORD dwHeight, DWORD wBpp, DWORD imagetype = 0);
	CxImage(const CxImage &src, bool copypixels = true, bool copyselection = true, bool copyalpha = true);
	CxImage(const TCHAR * filename, DWORD imagetype);	// For UNICODE support: char -> TCHAR
	CxImage(FILE * stream, DWORD imagetype);
	CxImage(CxFile * stream, DWORD imagetype);
	CxImage(BYTE * buffer, DWORD size, DWORD imagetype);
	virtual ~CxImage() { Destroy(); };
	CxImage& operator = (const CxImage&);
//@}

/** \addtogroup Initialization */ //@{
	void*	Create(DWORD dwWidth, DWORD dwHeight, DWORD wBpp, DWORD imagetype = 0);
	bool	Destroy();
	void	Clear(BYTE bval=0);
	void	Copy(const CxImage &src, bool copypixels = true, bool copyselection = true, bool copyalpha = true);
	bool	Transfer(CxImage &from);
	bool	CreateFromArray(BYTE* pArray,DWORD dwWidth,DWORD dwHeight,DWORD dwBitsperpixel, DWORD dwBytesperline, bool bFlipImage);
	bool	CreateFromMatrix(BYTE** ppMatrix,DWORD dwWidth,DWORD dwHeight,DWORD dwBitsperpixel, DWORD dwBytesperline, bool bFlipImage);
	void	FreeMemory(void* memblock);
//@}

/** \addtogroup Attributes */ //@{
	long	GetSize();
	BYTE*	GetBits(DWORD row = 0);
	BYTE	GetColorType();
	void*	GetDIB() const;
	DWORD	GetHeight() const;
	DWORD	GetWidth() const;
	DWORD	GetEffWidth() const;
	DWORD	GetNumColors() const;
	WORD	GetBpp() const;
	DWORD	GetType() const;
	const char*	GetLastError();
	const TCHAR* GetVersion();
	const float GetVersionNumber();

	DWORD	GetFrameDelay() const;
	void	SetFrameDelay(DWORD d);

	void	GetOffset(long *x,long *y);
	void	SetOffset(long x,long y);

	BYTE	GetJpegQuality() const;
	void	SetJpegQuality(BYTE q);

	BYTE	GetJpegScale() const;
	void	SetJpegScale(BYTE q);

	long	GetXDPI() const;
	long	GetYDPI() const;
	void	SetXDPI(long dpi);
	void	SetYDPI(long dpi);

	DWORD	GetClrImportant() const;
	void	SetClrImportant(DWORD ncolors = 0);

	long	GetProgress() const;
	long	GetEscape() const;
	void	SetProgress(long p);
	void	SetEscape(long i);

	long	GetTransIndex() const;
	RGBQUAD	GetTransColor();
	void	SetTransIndex(long idx);
	void	SetTransColor(RGBQUAD rgb);
	bool	IsTransparent() const;

	DWORD	GetCodecOption(DWORD imagetype = 0);
	bool	SetCodecOption(DWORD opt, DWORD imagetype = 0);

	DWORD	GetFlags() const;
	void	SetFlags(DWORD flags, bool bLockReservedFlags = true);

	//void*	GetUserData() const {return info.pUserData;}
	//void	SetUserData(void* pUserData) {info.pUserData = pUserData;}
//@}

/** \addtogroup Palette
 * These functions have no effects on RGB images and in this case the returned value is always 0.
 * @{ */
	bool	IsGrayScale();
	bool	IsIndexed() const;
	bool	IsSamePalette(CxImage &img, bool bCheckAlpha = true);
	DWORD	GetPaletteSize();
	RGBQUAD* GetPalette() const;
	RGBQUAD GetPaletteColor(BYTE idx);
	bool	GetPaletteColor(BYTE i, BYTE* r, BYTE* g, BYTE* b);
	BYTE	GetNearestIndex(RGBQUAD c);
	void	BlendPalette(COLORREF cr,long perc);
	void	SetGrayPalette();
	void	SetPalette(DWORD n, BYTE *r, BYTE *g, BYTE *b);
	void	SetPalette(RGBQUAD* pPal,DWORD nColors=256);
	void	SetPalette(rgb_color *rgb,DWORD nColors=256);
	void	SetPaletteColor(BYTE idx, BYTE r, BYTE g, BYTE b, BYTE alpha=0);
	void	SetPaletteColor(BYTE idx, RGBQUAD c);
	void	SetPaletteColor(BYTE idx, COLORREF cr);
	void	SwapIndex(BYTE idx1, BYTE idx2);
	void	SetStdPalette();
//@}

/** \addtogroup Pixel */ //@{
	bool	IsInside(long x, long y);
	bool	IsTransparent(long x,long y);
	RGBQUAD GetPixelColor(long x,long y, bool bGetAlpha = true);
	BYTE	GetPixelIndex(long x,long y);
	BYTE	GetPixelGray(long x, long y);
	void	SetPixelColor(long x,long y,RGBQUAD c, bool bSetAlpha = false);
	void	SetPixelColor(long x,long y,COLORREF cr);
	void	SetPixelIndex(long x,long y,BYTE i);
	void	DrawLine(int StartX, int EndX, int StartY, int EndY, RGBQUAD color, bool bSetAlpha=false);
	void	DrawLine(int StartX, int EndX, int StartY, int EndY, COLORREF cr);
	void	BlendPixelColor(long x,long y,RGBQUAD c, float blend, bool bSetAlpha = false);
//@}

protected:
/** \addtogroup Protected */ //@{
	BYTE BlindGetPixelIndex(const long x,const long y);