afmodule.h

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Author : Behdad Esfahbod (بهداد اسفهبد)
Date : 2025-04-27 18:44:49
Hash : 7651fe00
Message : [autofit] Enable dynamic loading of HarfBuzz. (1/2) This commit activates the mini-HarfBuzz header files and provides the necessary infrastructure for dynamically loading HarfBuzz if `FT_CONFIG_OPTION_USE_HARFBUZZ_DYNAMIC` is defined (this macro gets set up in a follow-up commit). * src/autofit/ft-hb.c: New file, providing `ft_hb_funcs_init` and `ft_hb_funcs_done` for loading HarfBuzz dynamically. The name of the library is hold in the macro `FT_LIBHARFBUZZ`, which can be overridden. * src/autofit/ft-hb.h: Don't include `hb.h` but `ft-hb-types.h`. (hb): Modified to handle both standard linking and dynamically loading of HarfBuzz. (HB_EXTERN): New macro to load `ft-hb-decls.h`. * src/autofit/afadjust.c [FT_CONFIG_OPTION_USE_HARFBUZZ]: For the sake of dynamically loading the HarfBuzz library, replace the compile-time macro `HB_VERSION_ATLEAST` with a call to the run-time function `hb_version_atleast` where necessary – a follow-up commit will set the minimum version of HarfBuzz to 2.6.8, which provides all necessary functions needed by FreeType. * src/autofit/afmodule.h: Include `ft-hb.h`. (AF_ModuleRec) [FT_CONFIG_OPTION_USE_HARFBUZZ_DYNAMIC]: Add `hb_funcs` structure to hold pointers to the dynamically loaded HarfBuzz functions. * src/autofit/afmodule.c (af_autofitter_init, af_autofitter_done) [FT_CONFIG_OPTION_USE_HARFBUZZ_DYNAMIC]: Call `ft_hb_funcs_init` and `ft_hb_funcs_done`. * src/autofit/afshaper.h: Updated. * src/autofit/autofit.c: Include `ft-hb.c`. * src/autofit/rules.mk (AUTOF_DRV_SRC, AUTOF_DRV_H): Updated.

src/autofit/afmodule.h

/****************************************************************************
 *
 * afmodule.h
 *
 *   Auto-fitter module implementation (specification).
 *
 * Copyright (C) 2003-2024 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 AFMODULE_H_
#define AFMODULE_H_

#include <freetype/internal/ftobjs.h>
#include <freetype/ftmodapi.h>

#include "ft-hb.h"

FT_BEGIN_HEADER


  /*
   * This is the `extended' FT_Module structure that holds the
   * autofitter's global data.
   */

  typedef struct  AF_ModuleRec_
  {
    FT_ModuleRec  root;

    FT_UInt       fallback_style;
    AF_Script     default_script;
    FT_Bool       no_stem_darkening;
    FT_Int        darken_params[8];

#if defined( FT_CONFIG_OPTION_USE_HARFBUZZ )         && \
    defined( FT_CONFIG_OPTION_USE_HARFBUZZ_DYNAMIC )
    ft_hb_funcs_t*  hb_funcs;
#endif

  } AF_ModuleRec, *AF_Module;


FT_DECLARE_AUTOHINTER_INTERFACE( af_autofitter_interface )
FT_DECLARE_MODULE( autofit_module_class )


FT_END_HEADER

#endif /* AFMODULE_H_ */


/* END */

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

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