kc3-lang/freetype/src/autofit/ft-hb.h

Branch - branch -masterv2.13

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• Hash : 97bb53ee
  Author :
  Date : 2025-04-28T07:24:41
  

  [autofit] Enable dynamic loading of HarfBuzz. (2/2)
  
  Handle the case where loading HarfBuzz dynamically fails.
  
  * src/autofit/ft-hb.c, src/autofit/ft-hb.h (ft_hb_enabled): New function.
  
  * src/autofit/afglobal.c (af_face_globals_new, af_face_globals_free):
    Guard HarfBuzz functions with `ft_hb_enabled`.
  
  * src/autofit/aflatin.c (af_latin_metrics_init_widths,
    af_latin_metrics_init_blues, af_latin_metrics_check_digits): Simplify
    setup of `shaper_buf`.
    Guard calls of `af_shaper_buf_create` with `ft_hb_enabled`.
  
  * src/autofit/afcjk.c (af_cjk_metrics_init_widths,
    af_cjk_metrics_init_blues, af_cjk_metrics_check_digits): Dito.
  
  * src/autofit/afshaper.c: Guard all HarfBuzz function calls with
    `ft_hb_enabled`.
  

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• src/autofit/ft-hb.h

• /****************************************************************************
   *
   * ft-hb.h
   *
   *   FreeType-HarfBuzz bridge (specification).
   *
   * Copyright (C) 2025 by
   * Behdad Esfahbod.
   *
   * 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 FT_HB_H
  #define FT_HB_H
  
  #include <freetype/internal/compiler-macros.h>
  #include <freetype/freetype.h>
  
  
  FT_BEGIN_HEADER
  
  #ifdef FT_CONFIG_OPTION_USE_HARFBUZZ
  
  #  include "ft-hb-types.h"
  
  #  ifdef FT_CONFIG_OPTION_USE_HARFBUZZ_DYNAMIC
  
  #    define HB_EXTERN( ret, name, args ) \
                typedef ret (*ft_ ## name ## _func_t) args;
  #    include "ft-hb-decls.h"
  #    undef HB_EXTERN
  
    typedef struct ft_hb_funcs_t
    {
  #    define HB_EXTERN( ret, name, args ) \
                ft_ ## name ## _func_t  name;
  #    include "ft-hb-decls.h"
  #    undef HB_EXTERN
    } ft_hb_funcs_t;
  
    struct  AF_ModuleRec_;
  
    FT_LOCAL( void )
    ft_hb_funcs_init( struct AF_ModuleRec_  *af_module );
  
    FT_LOCAL( void )
    ft_hb_funcs_done( struct AF_ModuleRec_  *af_module );
  
  #    define hb( x )  globals->module->hb_funcs->hb_ ## x
  
  #  else /* !FT_CONFIG_OPTION_USE_HARFBUZZ_DYNAMIC */
  
  #    define HB_EXTERN( ret, name, args ) \
                ret name args;
  #    include "ft-hb-decls.h"
  #    undef HB_EXTERN
  
  #    define hb( x )  hb_ ## x
  
  #  endif /* !FT_CONFIG_OPTION_USE_HARFBUZZ_DYNAMIC */
  
  #endif /* FT_CONFIG_OPTION_USE_HARFBUZZ */
  
  
    struct AF_FaceGlobalsRec_;
  
    FT_LOCAL( FT_Bool )
    ft_hb_enabled( struct AF_FaceGlobalsRec_  *globals );
  
  
  FT_END_HEADER
  
  #endif /* FT_HB_H */
  
  
  /* END */
  

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