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#ifndef __FTSize__
#define __FTSize__
#include <ft2build.h>
#include FT_FREETYPE_H
#include "FTGL.h"
/**
* FTSize class provides an abstraction layer for the Freetype Size.
*
* @see "Freetype 2 Documentation"
*
*/
class FTGL_EXPORT FTSize
{
public:
/**
* Default Constructor
*/
FTSize();
/**
* Destructor
*/
virtual ~FTSize();
/**
* Sets the char size for the current face.
*
* This doesn't guarantee that the size was set correctly. Clients
* should check errors.
*
* @param face Parent face for this size object
* @param point_size the face size in points (1/72 inch)
* @param x_resolution the horizontal resolution of the target device.
* @param y_resolution the vertical resolution of the target device.
* @return <code>true</code> if the size has been set. Clients should check Error() for more information if this function returns false()
*/
bool CharSize( FT_Face* face, unsigned int point_size, unsigned int x_resolution, unsigned int y_resolution);
/**
* get the char size for the current face.
*
* @return The char size in points
*/
unsigned int CharSize() const;
/**
* Gets the global ascender height for the face in pixels.
*
* @return Ascender height
*/
float Ascender() const;
/**
* Gets the global descender height for the face in pixels.
*
* @return Ascender height
*/
float Descender() const;
/**
* Gets the global face height for the face.
*
* If the face is scalable this returns the height of the global
* bounding box which ensures that any glyph will be less than or
* equal to this height. If the font isn't scalable there is no
* guarantee that glyphs will not be taller than this value.
*
* @return height in pixels.
*/
float Height() const;
/**
* Gets the global face width for the face.
*
* If the face is scalable this returns the width of the global
* bounding box which ensures that any glyph will be less than or
* equal to this width. If the font isn't scalable this value is
* the max_advance for the face.
*
* @return width in pixels.
*/
float Width() const;
/**
* Gets the underline position for the face.
*
* @return underline position in pixels
*/
float Underline() const;
unsigned int XPixelsPerEm() const;
unsigned int YPixelsPerEm() const;
/**
* Queries for errors.
*
* @return The current error code.
*/
FT_Error Error() const { return err; }
private:
/**
* The current Freetype face that this FTSize object relates to.
*/
FT_Face* ftFace;
/**
* The Freetype size.
*/
FT_Size ftSize;
/**
* The size in points.
*/
unsigned int size;
/**
* Current error code. Zero means no error.
*/
FT_Error err;
};
#endif // __FTSize__
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