MFont.h

/**********************************************************************



Copyright (c) 2005, TomTom B.V.



All rights reserved





***********************************************************************/







#ifndef __MFONT_H__

#define __MFONT_H__





class MFrameBuffer;



#include "CDesktop.h"



class MFont

{

 public:

  typedef unsigned int TUnicodeChar;



  typedef TUnicodeChar* TUnicodeString;



 public:

  virtual unsigned int GetCharHeight( TUnicodeChar aChar )                                               = 0;



  virtual unsigned int GetStringHeight( const char* aString )                                    = 0;



  virtual unsigned int GetStringHeight( const TUnicodeString aString )               = 0;



  virtual unsigned int GetCharWidth( TUnicodeChar aChar )                                            = 0;



  virtual unsigned int GetStringWidth( const char* aString )                     = 0;



  virtual unsigned int GetStringWidth( const TUnicodeString aString )            = 0;

  
  virtual bool         Render( MFrameBuffer& aFrameBuffer, TUnicodeChar aChar, unsigned int aX, unsigned int aY, CDesktop::TColor aColor  ) = 0;



  virtual bool         Render( MFrameBuffer& aFrameBuffer, const char* aString, unsigned int aX, unsigned int aY, CDesktop::TColor aColor ) = 0;



  virtual bool         Render( MFrameBuffer& aFrameBuffer, const TUnicodeString aString, unsigned int aX, unsigned int aY, CDesktop::TColor aColor ) = 0;



  enum EFontParameters
  {
   KHeight,
   KMaxAdvanceWidth,
   KAscender,
   KDescender
  };

  virtual int GetFontParameter( EFontParameters aParameter ) = 0;

  virtual ~MFont() {};



 public:

  enum EFixedFontType { 

                                       KFixedFont6   = 1, 

                                           KFixedFont12  = 2, 

                                           KFixedFont24  = 3,

                                           KFixedFont48  = 4,

                                           KFixedFont96  = 5

                      };



  static MFont& GetFixedWidthFont( EFixedFontType aFontType );



  static MFont* CreateTrueTypeFont( const char* aFontName, unsigned int aFontSize );



  static unsigned int UStrLen( const TUnicodeString aString );

};



#endif // __MFONT_H__

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