145 lines
2.7 KiB
C++
145 lines
2.7 KiB
C++
#ifndef __FTFace__
|
|
#define __FTFace__
|
|
|
|
//#include "FTGL.h"
|
|
|
|
#include <ft2build.h>
|
|
#include FT_FREETYPE_H
|
|
#include FT_GLYPH_H
|
|
|
|
#include "FTSize.h"
|
|
|
|
class FTCharmap;
|
|
|
|
/**
|
|
* FTFace class provides an abstraction layer for the Freetype Face.
|
|
*
|
|
* @see "Freetype 2 Documentation - 2.0.4"
|
|
*
|
|
*/
|
|
class FTFace
|
|
{
|
|
public:
|
|
/**
|
|
* Default Constructor
|
|
*/
|
|
FTFace();
|
|
|
|
/**
|
|
* Destructor
|
|
*
|
|
* Disposes of the current Freetype Face.
|
|
*/
|
|
virtual ~FTFace();
|
|
|
|
/**
|
|
* Opens and reads a face file.
|
|
*
|
|
* @param fontname font file name.
|
|
* @return <code>true</code> if file has opened
|
|
* successfully.
|
|
*/
|
|
bool Open( const char* filename);
|
|
|
|
/**
|
|
* Disposes of the face
|
|
*/
|
|
void Close();
|
|
|
|
/**
|
|
* Sets the char size for the current face.
|
|
*
|
|
* This doesn't guarantee that the size was set correctly. Clients
|
|
* should check errors.
|
|
*
|
|
* @param size the face size in points (1/72 inch)
|
|
* @param res the resolution of the target device.
|
|
* @return <code>FTSize</code> object
|
|
*/
|
|
FTSize& Size( const unsigned int size, const unsigned int res);
|
|
|
|
/**
|
|
* Sets the character map for the face.
|
|
*
|
|
* @param encoding the Freetype encoding symbol. See above.
|
|
* @return <code>true</code> if charmap was valid
|
|
* and set correctly
|
|
*/
|
|
bool CharMap( FT_Encoding encoding);
|
|
|
|
/**
|
|
* Get the glyph index of the input character.
|
|
*
|
|
* @param index The character code of the requested glyph in the
|
|
* current encoding eg apple roman.
|
|
* @return The glyph index for the character.
|
|
*/
|
|
unsigned int CharIndex( unsigned int index ) const;
|
|
|
|
/**
|
|
* Gets the kerning vector between two glyphs
|
|
*/
|
|
FT_Vector& KernAdvance( unsigned int index1, unsigned int index2);
|
|
|
|
/**
|
|
* Loads and creates a Freetype glyph.
|
|
*/
|
|
FT_Glyph* Glyph( unsigned int index, FT_Int load_flags);
|
|
|
|
/**
|
|
* Gets the current Freetype face.
|
|
*/
|
|
FT_Face* Face() const { return ftFace;}
|
|
|
|
/**
|
|
* Queries for errors.
|
|
*
|
|
* @return The current error code.
|
|
*/
|
|
FT_Error Error() const { return err; }
|
|
|
|
private:
|
|
/**
|
|
* The size object associated with this face
|
|
*/
|
|
FTSize charSize;
|
|
|
|
/**
|
|
* The Character Map object associated with this face
|
|
*/
|
|
FTCharmap* charMap;
|
|
|
|
/**
|
|
* The Freetype face
|
|
*/
|
|
FT_Face* ftFace;
|
|
|
|
/**
|
|
* Temporary variable to hold a glyph
|
|
*/
|
|
FT_Glyph ftGlyph;
|
|
|
|
/**
|
|
* The number of character maps in this face.
|
|
*/
|
|
int numCharMaps;
|
|
|
|
/**
|
|
* The number of glyphs in this face
|
|
*/
|
|
int numGlyphs;
|
|
|
|
/**
|
|
* Temporary variable to holding a kerning vector.
|
|
*/
|
|
FT_Vector kernAdvance;
|
|
|
|
/**
|
|
* Current error code. Zero means no error.
|
|
*/
|
|
FT_Error err;
|
|
};
|
|
|
|
|
|
#endif // __FTFace__
|