include/freetype/internal/services/svmetric.h

/***************************************************************************/
/*                                                                         */
/*  svmetric.h                                                             */
/*                                                                         */
/*    The FreeType services for metrics variations (specification).        */
/*                                                                         */
/*  Copyright 2016-2018 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 SVMETRIC_H_
#define SVMETRIC_H_

#include FT_INTERNAL_SERVICE_H


FT_BEGIN_HEADER


  /*
   *  A service to manage the `HVAR, `MVAR', and `VVAR' OpenType tables.
   *
   */

#define FT_SERVICE_ID_METRICS_VARIATIONS  "metrics-variations"


  /* HVAR */

  typedef FT_Error
  (*FT_HAdvance_Adjust_Func)( FT_Face  face,
                              FT_UInt  gindex,
                              FT_Int  *avalue );

  typedef FT_Error
  (*FT_LSB_Adjust_Func)( FT_Face  face,
                         FT_UInt  gindex,
                         FT_Int  *avalue );

  typedef FT_Error
  (*FT_RSB_Adjust_Func)( FT_Face  face,
                         FT_UInt  gindex,
                         FT_Int  *avalue );

  /* VVAR */

  typedef FT_Error
  (*FT_VAdvance_Adjust_Func)( FT_Face  face,
                              FT_UInt  gindex,
                              FT_Int  *avalue );

  typedef FT_Error
  (*FT_TSB_Adjust_Func)( FT_Face  face,
                         FT_UInt  gindex,
                         FT_Int  *avalue );

  typedef FT_Error
  (*FT_BSB_Adjust_Func)( FT_Face  face,
                         FT_UInt  gindex,
                         FT_Int  *avalue );

  typedef FT_Error
  (*FT_VOrg_Adjust_Func)( FT_Face  face,
                          FT_UInt  gindex,
                          FT_Int  *avalue );

  /* MVAR */

  typedef void
  (*FT_Metrics_Adjust_Func)( FT_Face  face );


  FT_DEFINE_SERVICE( MetricsVariations )
  {
    FT_HAdvance_Adjust_Func  hadvance_adjust;
    FT_LSB_Adjust_Func       lsb_adjust;
    FT_RSB_Adjust_Func       rsb_adjust;

    FT_VAdvance_Adjust_Func  vadvance_adjust;
    FT_TSB_Adjust_Func       tsb_adjust;
    FT_BSB_Adjust_Func       bsb_adjust;
    FT_VOrg_Adjust_Func      vorg_adjust;

    FT_Metrics_Adjust_Func   metrics_adjust;
  };


#ifndef FT_CONFIG_OPTION_PIC

#define FT_DEFINE_SERVICE_METRICSVARIATIONSREC( class_,            \
                                                hadvance_adjust_,  \
                                                lsb_adjust_,       \
                                                rsb_adjust_,       \
                                                vadvance_adjust_,  \
                                                tsb_adjust_,       \
                                                bsb_adjust_,       \
                                                vorg_adjust_,      \
                                                metrics_adjust_  ) \
  static const FT_Service_MetricsVariationsRec  class_ =           \
  {                                                                \
    hadvance_adjust_,                                              \
    lsb_adjust_,                                                   \
    rsb_adjust_,                                                   \
    vadvance_adjust_,                                              \
    tsb_adjust_,                                                   \
    bsb_adjust_,                                                   \
    vorg_adjust_,                                                  \
    metrics_adjust_                                                \
  };

#else /* FT_CONFIG_OPTION_PIC */

#define FT_DEFINE_SERVICE_METRICSVARIATIONSREC( class_,               \
                                                hadvance_adjust_,     \
                                                lsb_adjust_,          \
                                                rsb_adjust_,          \
                                                vadvance_adjust_,     \
                                                tsb_adjust_,          \
                                                bsb_adjust_,          \
                                                vorg_adjust_,         \
                                                metrics_adjust_  )    \
  void                                                                \
  FT_Init_Class_ ## class_( FT_Service_MetricsVariationsRec*  clazz ) \
  {                                                                   \
    clazz->hadvance_adjust = hadvance_adjust_;                        \
    clazz->lsb_adjust      = lsb_adjust_;                             \
    clazz->rsb_adjust      = rsb_adjust_;                             \
    clazz->vadvance_adjust = vadvance_adjust_;                        \
    clazz->tsb_adjust      = tsb_adjust_;                             \
    clazz->bsb_adjust      = bsb_adjust_;                             \
    clazz->vorg_adjust     = vorg_adjust_;                            \
    clazz->metrics_adjust  = metrics_adjust_;                         \
  }

#endif /* FT_CONFIG_OPTION_PIC */

  /* */


FT_END_HEADER

#endif /* SVMETRIC_H_ */


/* END */