kc3-lang/ftgl/include/FTSize.h

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• Hash : 9013e3ec
  Author :
  Date : 2002-06-20T08:22:06
  

  Changes for VTK Removed tabs Removed mmgr Optimisations for loading pixel based fonts Minor changes

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• include/FTSize.h

• #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 - 2.0.4"
   *
   */
  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 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 );
          
          /**
           * Gets the global ascender height for the face in pixels.
           *
           * @return  Ascender height
           */
          int Ascender() const;
          
          /**
           * Gets the global descender height for the face in pixels.
           *
           * @return  Ascender height
           */
          int 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.
           */
          int 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.
           */
          int Width() const;
          
          /**
           * Gets the underline position for the face.
           *
           * @return  underline position in pixels
           */
          int Underline() 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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