#ifndef _GIF_HPP_
#define _GIF_HPP_
#include <string.h>
#include <mdiwin/windows.hpp>
#include <mdiwin/types.hpp>
#include <mdiwin/lzw.hpp>

#ifdef _EXPAND_GIFDECODER_TEMPLATES_
#pragma option -Jgd
#endif

template <class T>
class GIFDecoder : public LZWDecompression
{
public:
	GIFDecoder(const char *pathFileName);
	virtual ~GIFDecoder();
	WORD unpackImage(void);
	void setPaletteHandler(T *object,void (T::*method)(const UCHAR FAR *lpPaletteData,USHORT numColors));
	void setBackgroundHandler(T *object,void (T::*method)(USHORT backgroundColor));
	void setImageHandler(T *object,void (T::*method)(void));
	void setShowHandler(T *object,void (T::*method)(USHORT imageWide,USHORT imageDeep,const UCHAR FAR *lpRowData,USHORT yLocation));
	void setErrorHandler(T *object,void (T::*method)(const char FAR *message));
private:
	void showHandler(UCHAR FAR *lpOutRow,USHORT yLocation);
	WORD readPaletteData(void);
	WORD processImage(void);

	T FAR *mPaletteObject;
	T *mBackgroundObject;
	T *mImageObject;
	T *mShowObject;
	T *mErrorObject;
	void(T::*mPaletteMethod)(const UCHAR FAR *lpPaletteData,USHORT numColors);
	void(T::*mBackgroundMethod)(USHORT backgroundColor);
	void(T::*mImageMethod)(void);
	void(T::*mShowMethod)(USHORT imageWide,USHORT imageDeep,const UCHAR FAR *lpRowData,USHORT yLocation);
	void(T::*mErrorMethod)(const char FAR *message);

	HGLOBAL mhGlobalPalette;
	UCHAR FAR *mlpPaletteData;

	USHORT mScreenWidth;
	USHORT mScreenHeight;
	UCHAR mGlobalFlagByte;
	USHORT mColors;
	USHORT mBackgroundColor;
	USHORT mImageStartLeft;
	USHORT mImageStartTop;
	USHORT mImageWide;
	USHORT mImageDeep;
	USHORT mIsInterlaced;
	USHORT mBufferCount;
	USHORT mPixelSize;
};
#include <mdiwin/gif.tpp>
#endif