// cimage.h : interface of the CImage class
// Purpose: Declaration of the Platform Independent Image Class
// Author: Alejandro Aguilar Sierra
// Created: 1995
// Copyright: (c) 1995, Alejandro Aguilar Sierra <asierra@servidor.unam.mx>
// This software is based in part on the work of the Independent JPEG Group.
// Modifications by Troels K. aug. 2001
// Modifications by ing.davide.pizzolato@libero.it
#ifndef __CIMAGE_H__
#define __CIMAGE_H__
#include <windows.h>
#include <tchar.h>
#include <stdio.h> // FILE
#ifndef _countof
#define _countof(array) (sizeof(array)/sizeof((array)[0]))
#endif
#ifdef CIMAGE_EXPORTS
#define CIMAGE_API __declspec(dllexport)
#else
#ifdef _IMAGEDLL
#define CIMAGE_API __declspec(dllimport)
#else
#define CIMAGE_API
#endif
#endif
/////////////////////////////////////////////////////////////////////////////
// CImageBase - virtual base class
class CIMAGE_API CImageBase
{
// Attributes
public:
void* m_handle; //contains the header, the palette, the bits
// Construction
public:
CImageBase(void);
// Operations
public:
BOOL IsOpen(void) const { return (m_handle != NULL) ; }
// New virtuals
public:
virtual ~CImageBase();
virtual void Close(void);
virtual BOOL DrawImplementation(HDC hdc, int xDst, int yDst, int cxDst, int cyDst,
int xSrc, int ySrc, int cxSrc, int cySrc) = 0;
};
/////////////////////////////////////////////////////////////////////////////
// CImage formats enumerator
enum cximage_type
{
ENUM_cimage_format_bmp,
ENUM_cimage_format_gif,
ENUM_cimage_format_jpeg,
ENUM_cimage_format_png,
ENUM_cimage_format_icon,
ENUM_cimage_format_tiff,
ENUM_cimage_format_enumcount,
ENUM_cimage_format_empty = -1,
};
// needed for png & gif
#pragma pack(1)
struct rgb_color_struct { BYTE r,g,b; };
#pragma pack()
// needed for png & mng
#define COLORTYPE_PALETTE 1
#define COLORTYPE_COLOR 2
#define COLORTYPE_ALPHA 4
/////////////////////////////////////////////////////////////////////////////
// CImage
class CIMAGE_API CImage : public CImageBase
{
public:
//extensible information collector
typedef struct tagCImageInfo
{
DWORD dwEffWidth; //DWORD aligned scan line width
BYTE* pImage; //THE IMAGE BITS
void* pGhost; //if this is a ghost, pGhost point to the body
// char szFileName[_MAX_PATH];
enum cximage_type dwFileType; //original image format
BYTE bColorType; //used for PNG, MNG
char szLastError[256]; //debugging
int nBkgndIndex; //used for GIF, PNG, MNG
BYTE nQuality; //used for JPEG
int nFrame; //used for TIF, GIF, MNG : actual frame
int nNumFrames; //used for TIF, GIF, MNG : total number of frames
DWORD dwFrameDelay; //used for GIF, MNG
} CXIMAGEINFO;
protected:
BITMAPINFOHEADER m_header; //standard header
CXIMAGEINFO m_info; //extended information
public:
CImage();
CImage(enum cximage_type);
CImage(DWORD dwWidth, DWORD dwHeight, WORD wBPP);
CImage(const CImage&);
CImage(HBITMAP, int BPP = -1); //Windows resource
CImage(HICON); //Windows resource
CImage(HANDLE hMem); //Windows objects (clipboard)
CImage(LPCSTR filename, enum cximage_type);
CImage(LPCWSTR filename, enum cximage_type);
CImage(FILE*, DWORD imagetype=0);
CImage& operator=(const CImage&);
BOOL Attach(const CImage&);
BOOL Detach(CImage* dst);
void* Create(DWORD dwWidth, DWORD dwHeight, WORD wBPP);
void Clear(BYTE bval=0);
BOOL Copy(const CImage& src);
HANDLE CopyToHandle(HANDLE hMem);
void Transfer(CImage* src);
BOOL IsInside(int x, int y);
int GetLength();
LPBYTE GetBits();
void EnableTransparency(BOOL bEnable = TRUE);
BOOL HasTransparency(void) const;
BOOL SetBkColor(COLORREF crTransparent);
DWORD GetWidth (void) const;
DWORD GetHeight(void) const;
SIZE GetSize (void) const;
DWORD GetEffWidth() const;
DWORD GetColorCount() const;
BYTE GetColorType() const;
WORD GetBPP() const;
enum cximage_type GetFileType();
void SetFileType(enum cximage_type type);
LPCSTR GetLastError();
DWORD GetPaletteSize();
int GetPixelIndex(int x,int y);
RGBQUAD* GetPalette() const;
RGBQUAD GetPaletteIndex(int idx) const;
RGBQUAD GetPixelColor(int x,int y);
int FindPaletteIndex(COLORREF) const;
BOOL GetRGB(int i, BYTE* r, BYTE* g, BYTE* b);
BYTE GetNearestIndex(RGBQUAD);
BOOL Draw(HDC hdc, int xDst = 0, int yDst = 0, int cxDst = -1, int cyDst = -1,
int xSrc = 0, int ySrc = 0, int cxSrc = -1, int cySrc = -1);
BOOL Draw(HDC hdc, const POINT&);
BOOL Draw(HDC hdc, const RECT&);
BOOL Draw(HDC hdc, const RECT& dst, const RECT& src);
BOOL Tile(HDC hdc, LPCRECT rc);
void BlendPalette(COLORREF cr,int perc);
void SetPalette(DWORD n, BYTE *r, BYTE *g, BYTE *b);
void SetPalette(const RGBQUAD* pPal,DWORD nColors=256);
void SetPalette(const rgb_color_struct *rgb,DWORD nColors=256);
BOOL SetPaletteIndex(int idx, BYTE r, BYTE g, BYTE b);
BOOL SetPaletteIndex(int idx, RGBQUAD);
BOOL SetPaletteIndex(int idx, COLORREF);
void SetPixelColor(int x,int y,RGBQUAD);
void SetPixelColor(int x,int y,COLORREF);
void SetPixelIndex(int x,int y,BYTE i);
void SetGreyPalette();
RGBQUAD HSLtoRGB(COLORREF cHSLColor);
RGBQUAD RGB2RGBQUAD(COLORREF);
COLORREF RGBQUAD2RGB (RGBQUAD);
RGBQUAD RGBtoHSL(RGBQUAD lRGBColor);
RGBQUAD HSLtoRGB(RGBQUAD lHSLColor);
void RGB2BGR(BYTE *buffer, int length);
BOOL CreateFromFile(LPCSTR filename, enum cximage_type);
BOOL CreateFromFile(LPCWSTR filename, enum cximage_type);
BOOL Save(LPCSTR filename, enum cximage_type);
BOOL Save(LPCWSTR filename, enum cximage_type);
// New virtuals
public:
virtual BOOL Read (FILE*, enum cximage_type);
virtual BOOL Write(FILE*, enum cximage_type);
BOOL LoadResource(HRSRC hRes, enum cximage_type, HMODULE hModule = NULL);
HBITMAP MakeBitmap();
// Operations - special effects
public:
BOOL Flip();
BOOL Mirror();
BOOL Negative();
BOOL GreyScale();
BOOL Rotate(double angle);
BOOL Exchange(COLORREF, COLORREF);
BOOL WalkColors(COLORREF(*manipulate)(BYTE r, BYTE g, BYTE b, LPVOID), LPVOID lpUser = NULL);
const CXIMAGEINFO* GetInfo (void) { return &m_info; }
const BITMAPINFO * GetBitmapInfo(void) { return (const BITMAPINFO*)m_handle; }
// Implementation
public:
virtual void Close(void);
virtual ~CImage();
virtual BOOL DrawImplementation(HDC hdc, int xDst, int yDst, int cxDst, int cyDst,
int xSrc, int ySrc, int cxSrc, int cySrc);
protected:
void Startup();
void Ghost(CImage *src);
WORD HueToRGB(WORD n1,WORD n2,WORD hue);
};
#include "cimage.inl"
#endif // __CIMAGE_H__
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