#ifndef __FTGlyphContainer__
#define __FTGlyphContainer__
#include <ft2build.h>
#include FT_FREETYPE_H
#include FT_GLYPH_H
#include "FTGL.h"
#include "FTBBox.h"
#include "FTPoint.h"
#include "FTVector.h"
class FTFace;
class FTGlyph;
class FTCharmap;
/**
* FTGlyphContainer holds the post processed FTGlyph objects.
*
* @see FTGlyph
*/
class FTGL_EXPORT FTGlyphContainer
{
typedef FTVector<FTGlyph*> GlyphVector;
public:
/**
* Constructor
*
* @param face The Freetype face
*/
FTGlyphContainer( FTFace* face);
/**
* Destructor
*/
~FTGlyphContainer();
/**
* 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 characterCode 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 characterCode ) const;
/**
* Adds a glyph to this glyph list.
*
* @param glyph The FTGlyph to be inserted into the container
* @param characterCode The char code of the glyph NOT the glyph index.
*/
void Add( FTGlyph* glyph, const unsigned int characterCode);
/**
* Get a glyph from the glyph list
*
* @param characterCode The char code of the glyph NOT the glyph index
* @return An FTGlyph or <code>null</code> is it hasn't been
* loaded.
*/
const FTGlyph* const Glyph( const unsigned int characterCode) const;
/**
* Get the bounding box for a character.
* @param characterCode The char code of the glyph NOT the glyph index
*/
FTBBox BBox( const unsigned int characterCode) const;
/**
* Returns the kerned advance width for a glyph.
*
* @param characterCode glyph index of the character
* @param nextCharacterCode the next glyph in a string
* @return advance width
*/
float Advance( unsigned int characterCode, unsigned int nextCharacterCode);
/**
* Renders a character
* @param characterCode the glyph to be Rendered
* @param nextCharacterCode the next glyph in the string. Used for kerning.
* @param penPosition the position to Render the glyph
* @return The distance to advance the pen position after Rendering
*/
FTPoint Render( unsigned int characterCode, unsigned int nextCharacterCode, FTPoint penPosition);
/**
* Queries the Font for errors.
*
* @return The current error code.
*/
FT_Error Error() const { return err;}
private:
/**
* How many glyphs are reserved in this container
*/
unsigned int numberOfGlyphs;
/**
* The FTGL face
*/
FTFace* face;
/**
* The Character Map object associated with the current face
*/
FTCharmap* charMap;
/**
* A structure to hold the glyphs
*/
GlyphVector glyphs;
/**
* Current error code. Zero means no error.
*/
FT_Error err;
};
#endif // __FTGlyphContainer__
