/***************************************************************************/

/*                                                                         */

/*  ftmm.c                                                                 */

/*                                                                         */

/*    Multiple Master font support (body).                                 */

/*                                                                         */

/*  Copyright 1996-2001, 2003, 2004, 2009 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.                                        */

/*                                                                         */

/***************************************************************************/

#include <ft2build.h>

#include FT_MULTIPLE_MASTERS_H

#include FT_INTERNAL_OBJECTS_H

#include FT_SERVICE_MULTIPLE_MASTERS_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  trace_mm

  static FT_Error

  ft_face_get_mm_service( FT_Face                   face,

                          FT_Service_MultiMasters  *aservice )

  {

    FT_Error  error;

    *aservice = NULL;

    if ( !face )

      return FT_Err_Invalid_Face_Handle;

    error = FT_Err_Invalid_Argument;

    if ( FT_HAS_MULTIPLE_MASTERS( face ) )

    {

      FT_FACE_LOOKUP_SERVICE( face,

                              *aservice,

                              MULTI_MASTERS );

      if ( *aservice )

        error = FT_Err_Ok;

    }

    return error;

  }

  /* documentation is in ftmm.h */

  FT_EXPORT_DEF( FT_Error )

  FT_Get_Multi_Master( FT_Face           face,

                       FT_Multi_Master  *amaster )

  {

    FT_Error                 error;

    FT_Service_MultiMasters  service;

    error = ft_face_get_mm_service( face, &service );

    if ( !error )

    {

      error = FT_Err_Invalid_Argument;

      if ( service->get_mm )

        error = service->get_mm( face, amaster );

    }

    return error;

  }

  /* documentation is in ftmm.h */

  FT_EXPORT_DEF( FT_Error )

  FT_Get_MM_Var( FT_Face      face,

                 FT_MM_Var*  *amaster )

  {

    FT_Error                 error;

    FT_Service_MultiMasters  service;

    error = ft_face_get_mm_service( face, &service );

    if ( !error )

    {

      error = FT_Err_Invalid_Argument;

      if ( service->get_mm_var )

        error = service->get_mm_var( face, amaster );

    }

    return error;

  }

  /* documentation is in ftmm.h */

  FT_EXPORT_DEF( FT_Error )

  FT_Set_MM_Design_Coordinates( FT_Face   face,

                                FT_UInt   num_coords,

                                FT_Long*  coords )

  {

    FT_Error                 error;

    FT_Service_MultiMasters  service;

    error = ft_face_get_mm_service( face, &service );

    if ( !error )

    {

      error = FT_Err_Invalid_Argument;

      if ( service->set_mm_design )

        error = service->set_mm_design( face, num_coords, coords );

    }

    return error;

  }

  /* documentation is in ftmm.h */

  FT_EXPORT_DEF( FT_Error )

  FT_Set_Var_Design_Coordinates( FT_Face    face,

                                 FT_UInt    num_coords,

                                 FT_Fixed*  coords )

  {

    FT_Error                 error;

    FT_Service_MultiMasters  service;

    error = ft_face_get_mm_service( face, &service );

    if ( !error )

    {

      error = FT_Err_Invalid_Argument;

      if ( service->set_var_design )

        error = service->set_var_design( face, num_coords, coords );

    }

    return error;

  }

  /* documentation is in ftmm.h */

  FT_EXPORT_DEF( FT_Error )

  FT_Set_MM_Blend_Coordinates( FT_Face    face,

                               FT_UInt    num_coords,

                               FT_Fixed*  coords )

  {

    FT_Error                 error;

    FT_Service_MultiMasters  service;

    error = ft_face_get_mm_service( face, &service );

    if ( !error )

    {

      error = FT_Err_Invalid_Argument;

      if ( service->set_mm_blend )

         error = service->set_mm_blend( face, num_coords, coords );

    }

    return error;

  }

  /* documentation is in ftmm.h */

  /* This is exactly the same as the previous function.  It exists for */

  /* orthogonality.                                                    */

  FT_EXPORT_DEF( FT_Error )

  FT_Set_Var_Blend_Coordinates( FT_Face    face,

                                FT_UInt    num_coords,

                                FT_Fixed*  coords )

  {

    FT_Error                 error;

    FT_Service_MultiMasters  service;

    error = ft_face_get_mm_service( face, &service );

    if ( !error )

    {

      error = FT_Err_Invalid_Argument;

      if ( service->set_mm_blend )

         error = service->set_mm_blend( face, num_coords, coords );

    }

    return error;

  }

/* END */