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freetype.h	279.94 KB	-rw-r--r--
ftadvanc.h	10.39 KB	-rw-r--r--
ftautoh.h	19.42 KB	-rw-r--r--
ftbbox.h	5.11 KB	-rw-r--r--
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ftbitmap.h	14.35 KB	-rw-r--r--
ftbzip2.h	4.2 KB	-rw-r--r--
ftcache.h	58.1 KB	-rw-r--r--
ftcffdrv.h	12.11 KB	-rw-r--r--
ftchapters.h	9.38 KB	-rw-r--r--
ftcid.h	5.52 KB	-rw-r--r--
fterrdef.h	14.1 KB	-rw-r--r--
fterrors.h	11.1 KB	-rw-r--r--
ftfntfmt.h	4.86 KB	-rw-r--r--
ftgasp.h	4.68 KB	-rw-r--r--
ftglyph.h	37.78 KB	-rw-r--r--
ftgxval.h	13.08 KB	-rw-r--r--
ftgzip.h	5.49 KB	-rw-r--r--
ftimage.h	73.91 KB	-rw-r--r--
ftincrem.h	11.13 KB	-rw-r--r--
ftlcdfil.h	12.28 KB	-rw-r--r--
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ftlzw.h	4.15 KB	-rw-r--r--
ftmac.h	16.69 KB	-rw-r--r--
ftmm.h	29.86 KB	-rw-r--r--
ftmodapi.h	37.05 KB	-rw-r--r--
ftmoderr.h	10.17 KB	-rw-r--r--
ftotval.h	7.41 KB	-rw-r--r--
ftoutln.h	34.9 KB	-rw-r--r--
ftpcfdrv.h	3.68 KB	-rw-r--r--
ftpfr.h	6.13 KB	-rw-r--r--
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ftsynth.h	4.03 KB	-rw-r--r--
ftsystem.h	10.31 KB	-rw-r--r--
fttrigon.h	8.23 KB	-rw-r--r--
ftttdrv.h	15.13 KB	-rw-r--r--
fttypes.h	34.84 KB	-rw-r--r--
ftwinfnt.h	10.16 KB	-rw-r--r--
t1tables.h	34.21 KB	-rw-r--r--
ttnameid.h	58.55 KB	-rw-r--r--
tttables.h	44.33 KB	-rw-r--r--
tttags.h	5.29 KB	-rw-r--r--
ttunpat.h	2.28 KB	-rw-r--r--

Code Editor : ftotval.h

/***************************************************************************/
/*                                                                         */
/*  ftotval.h                                                              */
/*                                                                         */
/*    FreeType API for validating OpenType tables (specification).         */
/*                                                                         */
/*  Copyright 2004-2017 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.                                        */
/*                                                                         */
/***************************************************************************/

/***************************************************************************/
/*                                                                         */
/*                                                                         */
/* Warning: This module might be moved to a different library in the       */
/*          future to avoid a tight dependency between FreeType and the    */
/*          OpenType specification.                                        */
/*                                                                         */
/*                                                                         */
/***************************************************************************/

#ifndef FTOTVAL_H_
#define FTOTVAL_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>                                                             */
  /*    ot_validation                                                      */
  /*                                                                       */
  /* <Title>                                                               */
  /*    OpenType Validation                                                */
  /*                                                                       */
  /* <Abstract>                                                            */
  /*    An API to validate OpenType tables.                                */
  /*                                                                       */
  /* <Description>                                                         */
  /*    This section contains the declaration of functions to validate     */
  /*    some OpenType tables (BASE, GDEF, GPOS, GSUB, JSTF, MATH).         */
  /*                                                                       */
  /* <Order>                                                               */
  /*    FT_OpenType_Validate                                               */
  /*    FT_OpenType_Free                                                   */
  /*                                                                       */
  /*    FT_VALIDATE_OTXXX                                                  */
  /*                                                                       */
  /*************************************************************************/

/**********************************************************************
  *
  * @enum:
  *    FT_VALIDATE_OTXXX
  *
  * @description:
  *    A list of bit-field constants used with @FT_OpenType_Validate to
  *    indicate which OpenType tables should be validated.
  *
  * @values:
  *    FT_VALIDATE_BASE ::
  *      Validate BASE table.
  *
  *    FT_VALIDATE_GDEF ::
  *      Validate GDEF table.
  *
  *    FT_VALIDATE_GPOS ::
  *      Validate GPOS table.
  *
  *    FT_VALIDATE_GSUB ::
  *      Validate GSUB table.
  *
  *    FT_VALIDATE_JSTF ::
  *      Validate JSTF table.
  *
  *    FT_VALIDATE_MATH ::
  *      Validate MATH table.
  *
  *    FT_VALIDATE_OT ::
  *      Validate all OpenType tables (BASE, GDEF, GPOS, GSUB, JSTF, MATH).
  *
  */
#define FT_VALIDATE_BASE  0x0100
#define FT_VALIDATE_GDEF  0x0200
#define FT_VALIDATE_GPOS  0x0400
#define FT_VALIDATE_GSUB  0x0800
#define FT_VALIDATE_JSTF  0x1000
#define FT_VALIDATE_MATH  0x2000

#define FT_VALIDATE_OT  ( FT_VALIDATE_BASE | \
                          FT_VALIDATE_GDEF | \
                          FT_VALIDATE_GPOS | \
                          FT_VALIDATE_GSUB | \
                          FT_VALIDATE_JSTF | \
                          FT_VALIDATE_MATH )

/**********************************************************************
  *
  * @function:
  *    FT_OpenType_Validate
  *
  * @description:
  *    Validate various OpenType tables to assure that all offsets and
  *    indices are valid.  The idea is that a higher-level library that
  *    actually does the text layout can access those tables without
  *    error checking (which can be quite time consuming).
  *
  * @input:
  *    face ::
  *       A handle to the input face.
  *
  *    validation_flags ::
  *       A bit field that specifies the tables to be validated.  See
  *       @FT_VALIDATE_OTXXX for possible values.
  *
  * @output:
  *    BASE_table ::
  *       A pointer to the BASE table.
  *
  *    GDEF_table ::
  *       A pointer to the GDEF table.
  *
  *    GPOS_table ::
  *       A pointer to the GPOS table.
  *
  *    GSUB_table ::
  *       A pointer to the GSUB table.
  *
  *    JSTF_table ::
  *       A pointer to the JSTF table.
  *
  * @return:
  *   FreeType error code.  0~means success.
  *
  * @note:
  *   This function only works with OpenType fonts, returning an error
  *   otherwise.
  *
  *   After use, the application should deallocate the five tables with
  *   @FT_OpenType_Free.  A NULL value indicates that the table either
  *   doesn't exist in the font, or the application hasn't asked for
  *   validation.
  */
  FT_EXPORT( FT_Error )
  FT_OpenType_Validate( FT_Face    face,
                        FT_UInt    validation_flags,
                        FT_Bytes  *BASE_table,
                        FT_Bytes  *GDEF_table,
                        FT_Bytes  *GPOS_table,
                        FT_Bytes  *GSUB_table,
                        FT_Bytes  *JSTF_table );

/**********************************************************************
  *
  * @function:
  *    FT_OpenType_Free
  *
  * @description:
  *    Free the buffer allocated by OpenType validator.
  *
  * @input:
  *    face ::
  *       A handle to the input face.
  *
  *    table ::
  *       The pointer to the buffer that is allocated by
  *       @FT_OpenType_Validate.
  *
  * @note:
  *   This function must be used to free the buffer allocated by
  *   @FT_OpenType_Validate only.
  */
  FT_EXPORT( void )
  FT_OpenType_Free( FT_Face   face,
                    FT_Bytes  table );

/* */

FT_END_HEADER

#endif /* FTOTVAL_H_ */

/* END */

${this.title}

Code Editor : ftotval.h