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