//-------------------------------------------------------------------------------------------------
// Author: Márcio Martins
//
// Purpose:
//  - Render a glyph outline into a bitmap using FreeType 2
//
// History:
//  - [6/6/2003] created the file
//
//-------------------------------------------------------------------------------------------------
#pragma once


#include <string>

#include "GlyphBitmap.h"
#include "FreeType2/include/FreeType/FreeType.h"



// Corresponds to the Unicode character set. This value covers all versions of the Unicode repertoire,
// including ASCII and Latin-1. Most fonts include a Unicode charmap, but not all of them.
#define FONT_ENCODING_UNICODE		(FT_ENCODING_UNICODE)

// Corresponds to the Microsoft Symbol encoding, used to encode mathematical symbols in the 32..255 character code range.
// For more information, see `http://www.ceviz.net/symbol.htm'.
#define FONT_ENCODING_SYMBOL		(FT_ENCODING_MS_SYMBOL)

// Corresponds to Microsoft's Japanese SJIS encoding.
// More info at `http://langsupport.japanreference.com/encoding.shtml'. See note on multi-byte encodings below.
#define FONT_ENCODING_SJIS			(FT_ENCODING_MS_SJIS)

// Corresponds to the encoding system for Simplified Chinese, as used in China. Only found in some TrueType fonts.
#define FONT_ENCODING_GB2312		(FT_ENCODING_MS_GB2312)

// Corresponds to the encoding system for Traditional Chinese, as used in Taiwan and Hong Kong. Only found in some TrueType fonts.
#define FONT_ENCODING_BIG5			(FT_ENCODING_MS_BIG5)

// Corresponds to the Korean encoding system known as Wansung.
// This is a Microsoft encoding that is only found in some TrueType fonts.
// For more information, see `http://www.microsoft.com/typography/unicode/949.txt'.
#define FONT_ENCODING_WANSUNG		(FT_ENCODING_MS_WANSUNG)

// The Korean standard character set (KS C-5601-1992), which corresponds to Windows code page 1361.
// This character set includes all possible Hangeul character combinations. Only found on some rare TrueType fonts.
#define FONT_ENCODING_JOHAB		(FT_ENCODING_MS_JOHAB)



//------------------------------------------------------------------------------------
class CFontRenderer
{
public:

	CFontRenderer();
	~CFontRenderer();

	int			LoadFromFile(const string &szFileName);
	int			LoadFromMemory(unsigned char *pBuffer, int iBufferSize);
	int			Release();

	int			SetGlyphBitmapSize(int iWidth, int iHeight);
	int			GetGlyphBitmapSize(int *pWidth, int *pHeight);

	int			SetSizeRatio(float fSizeRatio) { m_fSizeRatio = fSizeRatio; return 1; };
	float		GetSizeRatio() { return m_fSizeRatio; };

	int			SetEncoding(FT_Encoding pEncoding);
	FT_Encoding	GetEncoding() { return m_pEncoding; }; 

	int			GetGlyph(CGlyphBitmap *pGlyphBitmap, int *iGlyphWidth, int *iGlyphHeight, int iX, int iY, int iCharCode);
	int			GetGlyphScaled(CGlyphBitmap *pGlyphBitmap, int *iGlyphWidth, int *iGlyphHeight, int iX, int iY, float fScaleX, float fScaleY, int iCharCode);

private:

	FT_Library		m_pLibrary;
	FT_Face			m_pFace;
	FT_GlyphSlot	m_pGlyph;
	float			m_fSizeRatio;

	FT_Encoding		m_pEncoding;

	int				m_iGlyphBitmapWidth;
	int				m_iGlyphBitmapHeight;
};