gxvprop.c | Explore in Territory

/****************************************************************************
 *
 * gxvprop.c
 *
 *   TrueTypeGX/AAT prop table validation (body).
 *
 * Copyright (C) 2004-2023 by
 * suzuki toshiya, Masatake YAMATO, Red Hat K.K.,
 * 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.
 *
 */

/****************************************************************************
 *
 * gxvalid is derived from both gxlayout module and otvalid module.
 * Development of gxlayout is supported by the Information-technology
 * Promotion Agency(IPA), Japan.
 *
 */


#include "gxvalid.h"
#include "gxvcommn.h"


  /**************************************************************************
   *
   * The macro FT_COMPONENT is used in trace mode.  It is an implicit
   * parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log
   * messages during execution.
   */
#undef  FT_COMPONENT
#define FT_COMPONENT …


  /*************************************************************************/
  /*************************************************************************/
  /*****                                                               *****/
  /*****                      Data and Types                           *****/
  /*****                                                               *****/
  /*************************************************************************/
  /*************************************************************************/

#define GXV_PROP_HEADER_SIZE …
#define GXV_PROP_SIZE_MIN …

  GXV_prop_Data;

#define GXV_PROP_DATA( field ) …

#define GXV_PROP_FLOATER …
#define GXV_PROP_USE_COMPLEMENTARY_BRACKET …
#define GXV_PROP_COMPLEMENTARY_BRACKET_OFFSET …
#define GXV_PROP_ATTACHING_TO_RIGHT …
#define GXV_PROP_RESERVED …
#define GXV_PROP_DIRECTIONALITY_CLASS …


  /*************************************************************************/
  /*************************************************************************/
  /*****                                                               *****/
  /*****                      UTILITY FUNCTIONS                        *****/
  /*****                                                               *****/
  /*************************************************************************/
  /*************************************************************************/

  static void
  gxv_prop_zero_advance_validate( FT_UShort      gid,
                                  GXV_Validator  gxvalid )
  { … }


  /* Pass 0 as GLYPH to check the default property */
  static void
  gxv_prop_property_validate( FT_UShort      property,
                              FT_UShort      glyph,
                              GXV_Validator  gxvalid )
  { … }


  static void
  gxv_prop_LookupValue_validate( FT_UShort            glyph,
                                 GXV_LookupValueCPtr  value_p,
                                 GXV_Validator        gxvalid )
  { … }


  /*
    +===============+ --------+
    | lookup header |         |
    +===============+         |
    | BinSrchHeader |         |
    +===============+         |
    | lastGlyph[0]  |         |
    +---------------+         |
    | firstGlyph[0] |         |    head of lookup table
    +---------------+         |             +
    | offset[0]     |    ->   |          offset            [byte]
    +===============+         |             +
    | lastGlyph[1]  |         | (glyphID - firstGlyph) * 2 [byte]
    +---------------+         |
    | firstGlyph[1] |         |
    +---------------+         |
    | offset[1]     |         |
    +===============+         |
                              |
     ...                      |
                              |
    16bit value array         |
    +===============+         |
    |     value     | <-------+
    ...
  */

  static GXV_LookupValueDesc
  gxv_prop_LookupFmt4_transit( FT_UShort            relative_gindex,
                               GXV_LookupValueCPtr  base_value_p,
                               FT_Bytes             lookuptbl_limit,
                               GXV_Validator        gxvalid )
  { … }


  /*************************************************************************/
  /*************************************************************************/
  /*****                                                               *****/
  /*****                         prop TABLE                            *****/
  /*****                                                               *****/
  /*************************************************************************/
  /*************************************************************************/

  FT_LOCAL_DEF( void )
  gxv_prop_validate( FT_Bytes      table,
                     FT_Face       face,
                     FT_Validator  ftvalid )
  { … }


/* END */
godot/thirdparty/freetype/src/gxvalid/gxvprop.c
