kc3-lang/ftgl/include/FTGlyph.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/FTGlyph.h

• #ifndef     __FTGlyph__
  #define     __FTGlyph__
  
  #include <ft2build.h>
  #include FT_FREETYPE_H
  #include FT_GLYPH_H
  
  #include "FTGL.h"
  
  
  /**
   * FTBBox
   *
   *
   */
  class FTGL_EXPORT FTBBox
  {
      public:
          FTBBox()
          :   x1(0),
              y1(0),
              z1(0),
              x2(0),
              y2(0),
              z2(0)
          {}
          
          FTBBox( FT_Glyph glyph)
          {
              FT_BBox bbox;
              FT_Glyph_Get_CBox( glyph, ft_glyph_bbox_subpixels, &bbox );
              
              x1 = bbox.xMin >> 6;
              y1 = bbox.yMin >> 6;
              z1 = 0;
              x2 = bbox.xMax >> 6;
              y2 = bbox.yMax >> 6;
              z2 = 0; 
          }       
          
          FTBBox( int a, int b, int c, int d, int e, int f)
          :   x1(a),
              y1(b),
              z1(c),
              x2(d),
              y2(e),
              z2(f)
          {}
  
          ~FTBBox()
          {}
      
          // Make these ftPoints
          float x1, y1, z1, x2, y2, z2;
  
      protected:
      
      
      private:
  };
  
  
  /**
   * 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
   *
   */
  class FTGL_EXPORT FTGlyph
  {
      public:
          /**
           * Constructor
           */
          FTGlyph();
  
          /**
           * 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 float Render( const FT_Vector& pen) = 0;
          
          /**
           * Return the advance width for this glyph.
           *
           * @return  advance width.
           */
          float Advance() const { return advance;}
          
          /**
           * Return the bounding box for this glyph.
           *
           * @return  bounding box.
           */
          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
           */
          float advance;
  
          /**
           * Vector from the pen position to the topleft corner of the glyph
           */
          FT_Vector pos;
  
          
          /**
           * A freetype bounding box
           */
          FTBBox bBox;
          
          /**
           * Current error code. Zero means no error.
           */
          FT_Error err;
          
      private:
  
  };
  
  
  #endif  //  __FTGlyph__
  
  

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