kc3-lang/freetype/src/autofit/aflatin.h

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• Hash : cf2c49c8
  Author :
  Date : 2003-12-24T18:42:04
  

  * fixed compilation problems in the cache sub-system * partial updates to src/autofit

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• src/autofit/aflatin.h

• #ifndef __AFLATIN_H__
  #define __AFLATIN_H__
  
  #include "afhints.h"
  
  FT_BEGIN_HEADER
   
   /* 
    * the latin-specific script class
    *
    */
    FT_LOCAL( const AF_ScriptClassRec )    af_latin_script_class;
  
   /***************************************************************************/
   /***************************************************************************/
   /*****                                                                 *****/
   /*****       L A T I N   G L O B A L   M E T R I C S                   *****/
   /*****                                                                 *****/
   /***************************************************************************/
   /***************************************************************************/
  
   /*
    * the following declarations could be embedded in the file "aflatin.c"
    * they've been made semi-public to allow alternate script hinters to
    * re-use some of them
    */
  
   /*
    *  Latin (global) metrics management
    *
    */
  
    enum
    {
      AF_LATIN_BLUE_CAPITAL_TOP,
      AF_LATIN_BLUE_CAPITAL_BOTTOM,
      AF_LATIN_BLUE_SMALL_F_TOP,
      AF_LATIN_BLUE_SMALL_TOP,
      AF_LATIN_BLUE_SMALL_BOTTOM,
      AF_LATIN_BLUE_SMALL_MINOR,
      
      AF_LATIN_BLUE_MAX
    };
  
  #define AF_LATIN_IS_TOP_BLUE( b )  ( (b) == AF_LATIN_BLUE_CAPITAL_TOP || \
                                       (b) == AF_LATIN_BLUE_SMALL_F_TOP || \
                                       (b) == AF_LATIN_BLUE_SMALL_TOP   )
  
  #define  AF_LATIN_MAX_WIDTHS     16
  #define  AF_LATIN_MAX_BLUES      AF_LATIN_BLUE_MAX
  
    enum
    {
      AF_LATIN_BLUE_ACTIVE = (1 << 0),
      AF_LATIN_BLUE_TOP    = (1 << 1),
      
      AF_LATIN_BLUE_FLAG_MAX
    };
  
  
    typedef struct AF_LatinBlueRec_
    {
      AF_WidthRec   ref;
      AF_WidthRec   shoot;
      FT_UInt       flags;
    
    } AF_LatinBlueRec, *AF_LatinBlue;
  
  
    typedef struct AF_LatinAxisRec_
    {
      FT_Fixed         scale;
      FT_Pos           delta;
      
      FT_UInt          width_count;
      AF_WidthRec      widths[ AF_LATIN_MAX_WIDTHS ];
      FT_Pos           edge_distance_threshold;
      
     /* ignored for horizontal metrics */
      FT_Bool          control_overshoot;
      FT_UInt          blue_count;
      AF_LatinBlueRec  blues[ AF_LATIN_BLUE_MAX ];
  
    } AF_LatinAxisRec, *AF_LatinAxis;
  
  
    typedef struct AF_LatinMetricsRec_
    {
      AF_ScriptMetricsRec   root;
      FT_UInt               units_per_em;
      AF_LatinAxisRec       axis[ AF_DIMENSION_MAX ];
    
    } AF_LatinMetricsRec, *AF_LatinMetrics;
  
  
  
    FT_LOCAL( FT_Error )
    af_latin_metrics_init( AF_LatinMetrics  metrics,
                           FT_Face          face );
  
    FT_LOCAL( void )
    af_latin_metrics_scale( AF_LatinMetrics  metrics,
                            AF_Scaler        scaler );
  
  
  
   /***************************************************************************/
   /***************************************************************************/
   /*****                                                                 *****/
   /*****            L A T I N   G L Y P H   A N A L Y S I S              *****/
   /*****                                                                 *****/
   /***************************************************************************/
   /***************************************************************************/
  
    enum
    {
      AF_LATIN_HINTS_HORZ_SNAP   = (1 << 0),  /* enable stem width snapping  */
      AF_LATIN_HINTS_VERT_SNAP   = (1 << 1),  /* enable stem height snapping */
      AF_LATIN_HINTS_STEM_ADJUST = (1 << 2),  /* enable stem width/height adjustment */
      AF_LATIN_HINTS_MONO        = (1 << 3),  /* indicate monochrome rendering */
    };
  
  #define  AF_LATIN_HINTS_DO_HORZ_SNAP(h) \
     AF_HINTS_TEST_OTHER(h,AF_LATIN_HINTS_HORZ_SNAP)
  
  #define  AF_LATIN_HINTS_DO_VERT_SNAP(h) \
     AF_HINTS_TEST_OTHER(h,AF_LATIN_HINTS_VERT_SNAP)
  
  #define  AF_LATIN_HINTS_DO_STEM_ADJUST(h)  \
     AF_HINTS_TEST_OTHER(h,AF_LATIN_HINTS_STEM_ADJUST)
  
  #define  AF_LATIN_HINTS_DO_MONO(h)  \
     AF_HINTS_TEST_OTHER(h,AF_LATIN_HINTS_MONO)
  
  
   /* this shouldn't normally be exported. However, other scripts might
    * like to use this function as-is
    */
    FT_LOCAL( void )
    af_latin_hints_compute_segments( AF_GlyphHints  hints,
                                     AF_Dimension   dim );
  
   /* this shouldn't normally be exported. However, other scripts might
    * want to use this function as-is
    */
    FT_LOCAL( void )
    af_latin_hints_link_segments( AF_GlyphHints  hints,
                                  AF_Dimension   dim );
  
   /* this shouldn't normally be exported. However, other scripts might
    * want to use this function as-is
    */
    FT_LOCAL( void )
    af_latin_hints_compute_edges( AF_GlyphHints  hints,
                                  AF_Dimension   dim );
  
    FT_LOCAL( void )
    af_latin_hints_detect_features( AF_GlyphHints  hints,
                                    AF_Dimension   dim );
  
  /* */
  
  FT_END_HEADER
  
  #endif /* __AFLATIN_H__ */
  

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