afcover.h

Go to the documentation of this file.

/****************************************************************************
 *
 * afcover.h
 *
 *   Auto-fitter coverages (specification only).
 *
 * Copyright (C) 2013-2025 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.
 *
 */
 
 
  /* This header file can be included multiple times. */
  /* Define `COVERAGE' as needed.                     */
 
 
  /* Add new coverages here.  The first and second arguments are the   */
  /* coverage name in lowercase and uppercase, respectively, followed  */
  /* by a description string.  The last four arguments are the four    */
  /* characters defining the corresponding OpenType feature.           */

#if 0
  /* XXX: It's not possible to define blue zone characters in advance. */
  COVERAGE( alternative_fractions, ALTERNATIVE_FRACTIONS,
            "alternative fractions",
            'a', 'f', 'r', 'c' )
#endif
 
  COVERAGE( petite_capitals_from_capitals, PETITE_CAPITALS_FROM_CAPITALS,
            "petite capitals from capitals",
            'c', '2', 'c', 'p' )
 
  COVERAGE( small_capitals_from_capitals, SMALL_CAPITALS_FROM_CAPITALS,
            "small capitals from capitals",
            'c', '2', 's', 'c' )
 
#if 0
  /* XXX: Only digits are in this coverage, however, both normal style */
  /*      and oldstyle representation forms are possible.              */
  COVERAGE( denominators, DENOMINATORS,
            "denominators",
            'd', 'n', 'o', 'm' )
#endif
 
#if 0
  /* XXX: It's not possible to define blue zone characters in advance. */
  COVERAGE( fractions, FRACTIONS,
            "fractions",
            'f', 'r', 'a', 'c' )
#endif
 
#if 0
  /* XXX: Only digits are in this coverage, however, both normal style */
  /*      and oldstyle representation forms are possible.              */
  COVERAGE( numerators, NUMERATORS,
            "numerators",
            'n', 'u', 'm', 'r' )
#endif
 
  COVERAGE( ordinals, ORDINALS,
            "ordinals",
            'o', 'r', 'd', 'n' )
 
  COVERAGE( petite_capitals, PETITE_CAPITALS,
            "petite capitals",
            'p', 'c', 'a', 'p' )
 
  COVERAGE( ruby, RUBY,
            "ruby",
            'r', 'u', 'b', 'y' )
 
  COVERAGE( scientific_inferiors, SCIENTIFIC_INFERIORS,
            "scientific inferiors",
            's', 'i', 'n', 'f' )
 
  COVERAGE( small_capitals, SMALL_CAPITALS,
            "small capitals",
            's', 'm', 'c', 'p' )
 
  COVERAGE( subscript, SUBSCRIPT,
            "subscript",
            's', 'u', 'b', 's' )
 
  COVERAGE( superscript, SUPERSCRIPT,
            "superscript",
            's', 'u', 'p', 's' )
 
  COVERAGE( titling, TITLING,
            "titling",
            't', 'i', 't', 'l' )
 
#if 0
  /* to be always excluded */
  COVERAGE(nalt, 'n', 'a', 'l', 't'); /* Alternate Annotation Forms (?) */
  COVERAGE(ornm, 'o', 'r', 'n', 'm'); /* Ornaments (?) */
#endif
 
 
/* END */