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

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• Hash : 8cbbcf6b
  Author :
  Date : 2015-09-03T06:47:30
  

  [autofit] Pass glyph index to hinting function. No functionality change yet. * src/autofit/aftypes.h (AF_WritingSystem_ApplyHintsFunc): Pass glyph index. * src/autofit/afcjk.c, src/autofit/afcjk.h (af_cjk_hints_apply), src/autofit/afdummy.c (af_dummy_hints_apply), src/autofit/afindic.c (af_indic_hints_apply), src/autofit/aflatin.c (af_latin_hints_apply), src/autofit/aflatin2.c (af_latin2_hints_apply), src/autofit/afloader.c (af_loader_load_g): Updated.

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• src/autofit/afcjk.h

• /***************************************************************************/
  /*                                                                         */
  /*  afcjk.h                                                                */
  /*                                                                         */
  /*    Auto-fitter hinting routines for CJK writing system (specification). */
  /*                                                                         */
  /*  Copyright 2006-2015 by                                                 */
  /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
  /*                                                                         */
  /*  This file is part of the FreeType project, and may only be used,       */
  /*  modified, and distributed under the terms of the FreeType project      */
  /*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
  /*  this file you indicate that you have read the license and              */
  /*  understand and accept it fully.                                        */
  /*                                                                         */
  /***************************************************************************/
  
  
  #ifndef __AFCJK_H__
  #define __AFCJK_H__
  
  #include "afhints.h"
  #include "aflatin.h"
  
  
  FT_BEGIN_HEADER
  
  
    /* the CJK-specific writing system */
  
    AF_DECLARE_WRITING_SYSTEM_CLASS( af_cjk_writing_system_class )
  
  
    /*************************************************************************/
    /*************************************************************************/
    /*****                                                               *****/
    /*****              C J K   G L O B A L   M E T R I C S              *****/
    /*****                                                               *****/
    /*************************************************************************/
    /*************************************************************************/
  
  
    /*
     *  CJK glyphs tend to fill the square.  So we have both vertical and
     *  horizontal blue zones.  But some glyphs have flat bounding strokes that
     *  leave some space between neighbour glyphs.
     */
  
  #define AF_CJK_IS_TOP_BLUE( b ) \
            ( (b)->properties & AF_BLUE_PROPERTY_CJK_TOP )
  #define AF_CJK_IS_HORIZ_BLUE( b ) \
            ( (b)->properties & AF_BLUE_PROPERTY_CJK_HORIZ )
  #define AF_CJK_IS_RIGHT_BLUE  AF_CJK_IS_TOP_BLUE
  
  #define AF_CJK_MAX_WIDTHS  16
  
  
  #define AF_CJK_BLUE_ACTIVE      ( 1U << 0 ) /* zone height is <= 3/4px      */
  #define AF_CJK_BLUE_TOP         ( 1U << 1 ) /* result of AF_CJK_IS_TOP_BLUE */
  #define AF_CJK_BLUE_ADJUSTMENT  ( 1U << 2 ) /* used for scale adjustment    */
                                              /* optimization                 */
  
  
    typedef struct  AF_CJKBlueRec_
    {
      AF_WidthRec  ref;
      AF_WidthRec  shoot; /* undershoot */
      FT_UInt      flags;
  
    } AF_CJKBlueRec, *AF_CJKBlue;
  
  
    typedef struct  AF_CJKAxisRec_
    {
      FT_Fixed       scale;
      FT_Pos         delta;
  
      FT_UInt        width_count;                   /* number of used widths */
      AF_WidthRec    widths[AF_CJK_MAX_WIDTHS];     /* widths array          */
      FT_Pos         edge_distance_threshold;     /* used for creating edges */
      FT_Pos         standard_width;           /* the default stem thickness */
      FT_Bool        extra_light;           /* is standard width very light? */
  
      /* used for horizontal metrics too for CJK */
      FT_Bool        control_overshoot;
      FT_UInt        blue_count;
      AF_CJKBlueRec  blues[AF_BLUE_STRINGSET_MAX];
  
      FT_Fixed       org_scale;
      FT_Pos         org_delta;
  
    } AF_CJKAxisRec, *AF_CJKAxis;
  
  
    typedef struct  AF_CJKMetricsRec_
    {
      AF_StyleMetricsRec  root;
      FT_UInt             units_per_em;
      AF_CJKAxisRec       axis[AF_DIMENSION_MAX];
  
    } AF_CJKMetricsRec, *AF_CJKMetrics;
  
  
  #ifdef AF_CONFIG_OPTION_CJK
    FT_LOCAL( FT_Error )
    af_cjk_metrics_init( AF_CJKMetrics  metrics,
                         FT_Face        face );
  
    FT_LOCAL( void )
    af_cjk_metrics_scale( AF_CJKMetrics  metrics,
                          AF_Scaler      scaler );
  
    FT_LOCAL( FT_Error )
    af_cjk_hints_init( AF_GlyphHints  hints,
                       AF_CJKMetrics  metrics );
  
    FT_LOCAL( FT_Error )
    af_cjk_hints_apply( FT_UInt        glyph_index,
                        AF_GlyphHints  hints,
                        FT_Outline*    outline,
                        AF_CJKMetrics  metrics );
  
    /* shared; called from afindic.c */
    FT_LOCAL( void )
    af_cjk_metrics_check_digits( AF_CJKMetrics  metrics,
                                 FT_Face        face );
  
    FT_LOCAL( void )
    af_cjk_metrics_init_widths( AF_CJKMetrics  metrics,
                                FT_Face        face );
  #endif /* AF_CONFIG_OPTION_CJK */
  
  
  /* */
  
  FT_END_HEADER
  
  #endif /* __AFCJK_H__ */
  
  
  /* END */
  

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