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

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• Hash : d3cba0ed
  Author :
  Date : 2015-09-04T10:28:53
  

  [autofit] Redesign code ranges (2/2). This commit adds two fallback scripts (`latb', `latp') and implements support for the no-base character ranges introduced in the previous commit. * src/autofit/aftypes.h (AF_ScriptClassRec): Add `script_uni_nobase_ranges' field. (AF_DEFINE_SCRIPT_CLASS): Updated. * src/autofit/afscript.h, src/autofit/afstyles.h: Add `latb' and `latp' fallback scripts. * src/autofit/afblue.dat: Add blue zones for Latin subscript and superscript fallback scripts. * src/autofit/afblue.c, src/autofit/afblue.h: Regenerated. * src/autofit/afglobal.h (AF_NOBASE): New style flag for no-base characters. (AF_STYLE_MASK): Updated. * src/autofit/afglobal.c (SCRIPT): Updated. (af_face_globals_compute_style_coverage): Handle new style flag. * src/autofit/aflatin.c (af_latin_hints_apply): Handle new style flag. * src/autofit/afranges.h (SCRIPT): Use it to export no-base ranges.

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• src/autofit/afglobal.h

• /***************************************************************************/
  /*                                                                         */
  /*  afglobal.h                                                             */
  /*                                                                         */
  /*    Auto-fitter routines to compute global hinting values                */
  /*    (specification).                                                     */
  /*                                                                         */
  /*  Copyright 2003-2015 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 __AFGLOBAL_H__
  #define __AFGLOBAL_H__
  
  
  #include "aftypes.h"
  #include "afmodule.h"
  #include "hbshim.h"
  
  
  FT_BEGIN_HEADER
  
  
    FT_LOCAL_ARRAY( AF_WritingSystemClass )
    af_writing_system_classes[];
  
  
  #undef  SCRIPT
  #define SCRIPT( s, S, d, h, sc1, sc2, sc3 )                    \
            AF_DECLARE_SCRIPT_CLASS( af_ ## s ## _script_class )
  
  #include "afscript.h"
  
    FT_LOCAL_ARRAY( AF_ScriptClass )
    af_script_classes[];
  
  
  #undef  STYLE
  #define STYLE( s, S, d, ws, sc, ss, c )                      \
            AF_DECLARE_STYLE_CLASS( af_ ## s ## _style_class )
  
  #include "afstyles.h"
  
    FT_LOCAL_ARRAY( AF_StyleClass )
    af_style_classes[];
  
  
  #ifdef FT_DEBUG_LEVEL_TRACE
    FT_LOCAL_ARRAY( char* )
    af_style_names[];
  #endif
  
  
    /*
     *  Default values and flags for both autofitter globals (found in
     *  AF_ModuleRec) and face globals (in AF_FaceGlobalsRec).
     */
  
    /* index of fallback style in `af_style_classes' */
  #ifdef AF_CONFIG_OPTION_CJK
  #define AF_STYLE_FALLBACK    AF_STYLE_HANI_DFLT
  #else
  #define AF_STYLE_FALLBACK    AF_STYLE_NONE_DFLT
  #endif
    /* default script for OpenType; ignored if HarfBuzz isn't used */
  #define AF_SCRIPT_DEFAULT    AF_SCRIPT_LATN
  
    /* a bit mask for AF_DIGIT and AF_NOBASE */
  #define AF_STYLE_MASK        0x3FFF
    /* an uncovered glyph      */
  #define AF_STYLE_UNASSIGNED  AF_STYLE_MASK
  
    /* if this flag is set, we have an ASCII digit   */
  #define AF_DIGIT             0x8000U
    /* if this flag is set, we have a no-base character */
  #define AF_NOBASE            0x4000U
  
    /* `increase-x-height' property */
  #define AF_PROP_INCREASE_X_HEIGHT_MIN  6
  #define AF_PROP_INCREASE_X_HEIGHT_MAX  0
  
  
    /************************************************************************/
    /************************************************************************/
    /*****                                                              *****/
    /*****                  F A C E   G L O B A L S                     *****/
    /*****                                                              *****/
    /************************************************************************/
    /************************************************************************/
  
  
    /*
     *  Note that glyph_styles[] maps each glyph to an index into the
     *  `af_style_classes' array.
     *
     */
    typedef struct  AF_FaceGlobalsRec_
    {
      FT_Face          face;
      FT_Long          glyph_count;    /* same as face->num_glyphs */
      FT_UShort*       glyph_styles;
  
  #ifdef FT_CONFIG_OPTION_USE_HARFBUZZ
      hb_font_t*       hb_font;
  #endif
  
      /* per-face auto-hinter properties */
      FT_UInt          increase_x_height;
  
      AF_StyleMetrics  metrics[AF_STYLE_MAX];
  
      AF_Module        module;         /* to access global properties */
  
    } AF_FaceGlobalsRec;
  
  
    /*
     *  model the global hints data for a given face, decomposed into
     *  style-specific items
     */
  
    FT_LOCAL( FT_Error )
    af_face_globals_new( FT_Face          face,
                         AF_FaceGlobals  *aglobals,
                         AF_Module        module );
  
    FT_LOCAL( FT_Error )
    af_face_globals_get_metrics( AF_FaceGlobals    globals,
                                 FT_UInt           gindex,
                                 FT_UInt           options,
                                 AF_StyleMetrics  *ametrics );
  
    FT_LOCAL( void )
    af_face_globals_free( AF_FaceGlobals  globals );
  
    FT_LOCAL_DEF( FT_Bool )
    af_face_globals_is_digit( AF_FaceGlobals  globals,
                              FT_UInt         gindex );
  
    /* */
  
  
  FT_END_HEADER
  
  #endif /* __AFGLOBAL_H__ */
  
  
  /* END */
  

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