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/****************************************************************************
 *
 * ftcid.h
 *
 *   FreeType API for accessing CID font information (specification).
 *
 * Copyright (C) 2007-2019 by
 * Dereg Clegg and Michael Toftdal.
 *
 * 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 FTCID_H_
#define FTCID_H_

#include <ft2build.h>
#include FT_FREETYPE_H

#ifdef FREETYPE_H
#error "freetype.h of FreeType 1 has been loaded!"
#error "Please fix the directory search order for header files"
#error "so that freetype.h of FreeType 2 is found first."
#endif


FT_BEGIN_HEADER


  /**************************************************************************
   *
   * @section:
   *   cid_fonts
   *
   * @title:
   *   CID Fonts
   *
   * @abstract:
   *   CID-keyed font-specific API.
   *
   * @description:
   *   This section contains the declaration of CID-keyed font-specific
   *   functions.
   *
   */


  /**************************************************************************
   *
   * @function:
   *    FT_Get_CID_Registry_Ordering_Supplement
   *
   * @description:
   *    Retrieve the Registry/Ordering/Supplement triple (also known as the
   *    "R/O/S") from a CID-keyed font.
   *
   * @input:
   *    face ::
   *      A handle to the input face.
   *
   * @output:
   *    registry ::
   *      The registry, as a C~string, owned by the face.
   *
   *    ordering ::
   *      The ordering, as a C~string, owned by the face.
   *
   *    supplement ::
   *      The supplement.
   *
   * @return:
   *    FreeType error code.  0~means success.
   *
   * @note:
   *    This function only works with CID faces, returning an error
   *    otherwise.
   *
   * @since:
   *    2.3.6
   */
  FT_EXPORT( FT_Error )
  FT_Get_CID_Registry_Ordering_Supplement( FT_Face       face,
                                           const char*  *registry,
                                           const char*  *ordering,
                                           FT_Int       *supplement );


  /**************************************************************************
   *
   * @function:
   *    FT_Get_CID_Is_Internally_CID_Keyed
   *
   * @description:
   *    Retrieve the type of the input face, CID keyed or not.  In contrast
   *    to the @FT_IS_CID_KEYED macro this function returns successfully also
   *    for CID-keyed fonts in an SFNT wrapper.
   *
   * @input:
   *    face ::
   *      A handle to the input face.
   *
   * @output:
   *    is_cid ::
   *      The type of the face as an @FT_Bool.
   *
   * @return:
   *    FreeType error code.  0~means success.
   *
   * @note:
   *    This function only works with CID faces and OpenType fonts, returning
   *    an error otherwise.
   *
   * @since:
   *    2.3.9
   */
  FT_EXPORT( FT_Error )
  FT_Get_CID_Is_Internally_CID_Keyed( FT_Face   face,
                                      FT_Bool  *is_cid );


  /**************************************************************************
   *
   * @function:
   *    FT_Get_CID_From_Glyph_Index
   *
   * @description:
   *    Retrieve the CID of the input glyph index.
   *
   * @input:
   *    face ::
   *      A handle to the input face.
   *
   *    glyph_index ::
   *      The input glyph index.
   *
   * @output:
   *    cid ::
   *      The CID as an @FT_UInt.
   *
   * @return:

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