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#ifndef __FTGlyph__
#define __FTGlyph__
#include <ft2build.h>
#include FT_FREETYPE_H
#include FT_GLYPH_H
#include "FTBBox.h"
#include "FTPoint.h"
#include "FTGL.h"
/**
* FTGlyph is the base class for FTGL glyphs.
*
* It provides the interface between Freetype glyphs and their openGL
* renderable counterparts. This is an abstract class and derived classes
* must implement the <code>render</code> function.
*
* @see FTGlyphContainer
* @see FTBBox
* @see FTPoint
*
*/
class FTGL_EXPORT FTGlyph
{
public:
/**
* Constructor
*
* @param glyph The Freetype glyph to be processed
* @param useDisplayList Enable or disable the use of Display Lists for this glyph
* <code>true</code> turns ON display lists.
* <code>false</code> turns OFF display lists.
*/
FTGlyph( FT_GlyphSlot glyph, bool useDisplayList = true);
/**
* Destructor
*/
virtual ~FTGlyph();
/**
* Renders this glyph at the current pen position.
*
* @param pen The current pen position.
* @return The advance distance for this glyph.
*/
virtual const FTPoint& Render( const FTPoint& pen) = 0;
/**
* Return the advance width for this glyph.
*
* @return advance width.
*/
const FTPoint& Advance() const { return advance;}
/**
* Return the bounding box for this glyph.
*
* @return bounding box.
*/
const FTBBox& BBox() const { return bBox;}
/**
* Queries for errors.
*
* @return The current error code.
*/
FT_Error Error() const { return err;}
protected:
/**
* The advance distance for this glyph
*/
FTPoint advance;
/**
* The bounding box of this glyph.
*/
FTBBox bBox;
/**
* Flag to enable or disable the use of Display Lists inside FTGL
* <code>true</code> turns ON display lists.
* <code>false</code> turns OFF display lists.
*/
bool useDisplayList;
FT_GlyphSlot glyphSlot;
/**
* Current error code. Zero means no error.
*/
FT_Error err;
private:
};
#endif // __FTGlyph__
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