C++ FT_NEW函数代码示例

  /* Create a new memory stream from a buffer and a size. */
  static FT_Error
  new_memory_stream( FT_Library           library,
                     FT_Byte*             base,
                     FT_ULong             size,
                     FT_Stream_CloseFunc  close,
                     FT_Stream*           astream )
  {
    FT_Error   error;
    FT_Memory  memory;
    FT_Stream  stream;


    if ( !library )
      return FT_Err_Invalid_Library_Handle;

    if ( !base )
      return FT_Err_Invalid_Argument;

    *astream = 0;
    memory = library->memory;
    if ( FT_NEW( stream ) )
      goto Exit;

    FT_Stream_OpenMemory( stream, base, size );

    stream->close = close;

    *astream = stream;

  Exit:
    return error;
  }

  ftc_cmap_node_new( FTC_Node   *ftcanode,
                     FT_Pointer  ftcquery,
                     FTC_Cache   cache )
  {
    FTC_CMapNode  *anode  = (FTC_CMapNode*)ftcanode;
    FTC_CMapQuery  query  = (FTC_CMapQuery)ftcquery;
    FT_Error       error;
    FT_Memory      memory = cache->memory;
    FTC_CMapNode   node   = NULL;
    FT_UInt        nn;


    if ( !FT_NEW( node ) )
    {
      node->face_id    = query->face_id;
      node->cmap_index = query->cmap_index;
      node->first      = (query->char_code / FTC_CMAP_INDICES_MAX) *
                         FTC_CMAP_INDICES_MAX;

      for ( nn = 0; nn < FTC_CMAP_INDICES_MAX; nn++ )
        node->indices[nn] = FTC_CMAP_UNKNOWN;
    }

    *anode = node;
    return error;
  }

  afm_parser_init( AFM_Parser  parser,
                   FT_Memory   memory,
                   FT_Byte*    base,
                   FT_Byte*    limit )
  {
    AFM_Stream  stream;
    FT_Error    error;


    if ( FT_NEW( stream ) )
      return error;

    stream->cursor = stream->base = base;
    stream->limit  = limit;

    /* don't skip the first line during the first call */
    stream->status = AFM_STREAM_STATUS_EOL;

    parser->memory    = memory;
    parser->stream    = stream;
    parser->FontInfo  = NULL;
    parser->get_index = NULL;

    return PSaux_Err_Ok;
  }

  cf2_stack_init( FT_Memory  memory,
                  FT_Error*  e,
                  FT_UInt    stackSize )
  {
    FT_Error  error = FT_Err_Ok;     /* for FT_NEW */

    CF2_Stack  stack = NULL;


    if ( !FT_NEW( stack ) )
    {
      /* initialize the structure; FT_NEW zeroes it */
      stack->memory = memory;
      stack->error  = e;
    }

    /* allocate the stack buffer */
    if ( FT_NEW_ARRAY( stack->buffer, stackSize ) )
    {
      FT_FREE( stack );
      return NULL;
    }

    stack->stackSize = stackSize;
    stack->top       = stack->buffer;     /* empty stack */

    return stack;
  }

  FTC_INode_New( FTC_INode   *pinode,
                 FTC_GQuery   gquery,
                 FTC_Cache    cache )
  {
    FT_Memory  memory = cache->memory;
    FT_Error   error;
    FTC_INode  inode  = NULL;


    if ( !FT_NEW( inode ) )
    {
      FTC_GNode         gnode  = FTC_GNODE( inode );
      FTC_Family        family = gquery->family;
      FT_UInt           gindex = gquery->gindex;
      FTC_IFamilyClass  clazz  = FTC_CACHE__IFAMILY_CLASS( cache );


      /* initialize its inner fields */
      FTC_GNode_Init( gnode, gindex, family );

      /* we will now load the glyph image */
      error = clazz->family_load_glyph( family, gindex, cache,
                                        &inode->glyph );
      if ( error )
      {
        FTC_INode_Free( inode, cache );
        inode = NULL;
      }
    }

    *pinode = inode;
    return error;
  }

  FTC_Manager_New( FT_Library          library,
                   FT_UInt             max_faces,
                   FT_UInt             max_sizes,
                   FT_ULong            max_bytes,
                   FTC_Face_Requester  requester,
                   FT_Pointer          req_data,
                   FTC_Manager        *amanager )
  {
    FT_Error     error;
    FT_Memory    memory;
    FTC_Manager  manager = 0;


    if ( !library )
      return FT_THROW( Invalid_Library_Handle );

    if ( !amanager || !requester )
      return FT_THROW( Invalid_Argument );

    memory = library->memory;

    if ( FT_NEW( manager ) )
      goto Exit;

    if ( max_faces == 0 )
      max_faces = FTC_MAX_FACES_DEFAULT;

    if ( max_sizes == 0 )
      max_sizes = FTC_MAX_SIZES_DEFAULT;

    if ( max_bytes == 0 )
      max_bytes = FTC_MAX_BYTES_DEFAULT;

    manager->library      = library;
    manager->memory       = memory;
    manager->max_weight   = max_bytes;

    manager->request_face = requester;
    manager->request_data = req_data;

    FTC_MruList_Init( &manager->faces,
                      &ftc_face_list_class,
                      max_faces,
                      manager,
                      memory );

    FTC_MruList_Init( &manager->sizes,
                      &ftc_size_list_class,
                      max_sizes,
                      manager,
                      memory );

    *amanager = manager;

  Exit:
    return error;
  }

  FTC_SNode_New( FTC_SNode  *psnode,
                 FTC_GQuery  gquery,
                 FTC_Cache   cache )
  {
    FT_Memory   memory = cache->memory;
    FT_Error    error;
    FTC_SNode   snode  = NULL;
    FT_UInt     gindex = gquery->gindex;
    FTC_Family  family = gquery->family;

    FTC_SFamilyClass  clazz = FTC_CACHE_SFAMILY_CLASS( cache );
    FT_UInt           total;
    FT_UInt           node_count;


    total = clazz->family_get_count( family, cache->manager );
    if ( total == 0 || gindex >= total )
    {
      error = FT_THROW( Invalid_Argument );
      goto Exit;
    }

    if ( !FT_NEW( snode ) )
    {
      FT_UInt  count, start;


      start = gindex - ( gindex % FTC_SBIT_ITEMS_PER_NODE );
      count = total - start;
      if ( count > FTC_SBIT_ITEMS_PER_NODE )
        count = FTC_SBIT_ITEMS_PER_NODE;

      FTC_GNode_Init( FTC_GNODE( snode ), start, family );

      snode->count = count;
      for ( node_count = 0; node_count < count; node_count++ )
      {
        snode->sbits[node_count].width = 255;
      }

      error = ftc_snode_load( snode,
                              cache->manager,
                              gindex,
                              NULL );
      if ( error )
      {
        FTC_SNode_Free( snode, cache );
        snode = NULL;
      }
    }

  Exit:
    *psnode = snode;
    return error;
  }

  FT_Stream_OpenLZW( FT_Stream  stream,
                     FT_Stream  source )
  {
    FT_Error    error;
    FT_Memory   memory;
    FT_LZWFile  zip = NULL;


    if ( !stream || !source )
    {
      error = FT_THROW( Invalid_Stream_Handle );
      goto Exit;
    }

    memory = source->memory;

    /*
     *  Check the header right now; this prevents allocation of a huge
     *  LZWFile object (400 KByte of heap memory) if not necessary.
     *
     *  Did I mention that you should never use .Z compressed font
     *  files?
     */
    error = ft_lzw_check_header( source );
    if ( error )
      goto Exit;

    FT_ZERO( stream );
    stream->memory = memory;

    if ( !FT_NEW( zip ) )
    {
      error = ft_lzw_file_init( zip, stream, source );
      if ( error )
      {
        FT_FREE( zip );
        goto Exit;
      }

      stream->descriptor.pointer = zip;
    }

    stream->size  = 0x7FFFFFFFL;  /* don't know the real size! */
    stream->pos   = 0;
    stream->base  = 0;
    stream->read  = ft_lzw_stream_io;
    stream->close = ft_lzw_stream_close;

  Exit:
    return error;
  }

  FT_GlyphLoader_New( FT_Memory        memory,
                      FT_GlyphLoader  *aloader )
  {
    FT_GlyphLoader  loader = NULL;
    FT_Error        error;


    if ( !FT_NEW( loader ) )
    {
      loader->memory = memory;
      *aloader       = loader;
    }
    return error;
  }

  ah_outline_new( FT_Memory    memory,
                  AH_Outline*  aoutline )
  {
    FT_Error     error;
    AH_Outline   outline;


    if ( !FT_NEW( outline ) )
    {
      outline->memory = memory;
      *aoutline = outline;
    }

    return error;
  }

  cff_size_init( FT_Size  cffsize )         /* CFF_Size */
  {
    CFF_Size           size  = (CFF_Size)cffsize;
    FT_Error           error = FT_Err_Ok;
    PSH_Globals_Funcs  funcs = cff_size_get_globals_funcs( size );


    if ( funcs )
    {
      CFF_Face      face     = (CFF_Face)cffsize->face;
      CFF_Font      font     = (CFF_Font)face->extra.data;
      CFF_Internal  internal = NULL;

      PS_PrivateRec  priv;
      FT_Memory      memory = cffsize->face->memory;

      FT_UInt  i;


      if ( FT_NEW( internal ) )
        goto Exit;

      cff_make_private_dict( &font->top_font, &priv );
      error = funcs->create( cffsize->face->memory, &priv,
                             &internal->topfont );
      if ( error )
        goto Exit;

      for ( i = font->num_subfonts; i > 0; i-- )
      {
        CFF_SubFont  sub = font->subfonts[i - 1];


        cff_make_private_dict( sub, &priv );
        error = funcs->create( cffsize->face->memory, &priv,
                               &internal->subfonts[i - 1] );
        if ( error )
          goto Exit;
      }

      cffsize->internal = (FT_Size_Internal)(void*)internal;
    }

    size->strike_index = 0xFFFFFFFFUL;

  Exit:
    return error;
  }

  cf2_stack_init( FT_Memory  memory,
                  FT_Error*  e )
  {
    FT_Error  error = FT_Err_Ok;     /* for FT_NEW */

    CF2_Stack  stack = NULL;


    if ( !FT_NEW( stack ) )
    {
      /* initialize the structure; FT_NEW zeroes it */
      stack->memory = memory;
      stack->error  = e;
      stack->top    = &stack->buffer[0]; /* empty stack */
    }

    return stack;
  }

/* synthesized into a TTC with one offset table.              */
static FT_Error
sfnt_open_font(FT_Stream stream,
               TT_Face face)
{
    FT_Memory memory = stream->memory;
    FT_Error  error;
    FT_ULong  tag, offset;

    static const FT_Frame_Field ttc_header_fields[] =
    {
#undef  FT_STRUCTURE
#define FT_STRUCTURE TTC_HeaderRec

        FT_FRAME_START(8),
        FT_FRAME_LONG(version),
        FT_FRAME_LONG(count),
        FT_FRAME_END
    };


    face->ttc_header.tag     = 0;
    face->ttc_header.version = 0;
    face->ttc_header.count   = 0;

    offset = FT_STREAM_POS();

    if (FT_READ_ULONG(tag))
        return error;

    if (tag != 0x00010000UL &&
        tag != TTAG_ttcf &&
        tag != TTAG_OTTO &&
        tag != TTAG_true &&
        tag != TTAG_typ1 &&
        tag != 0x00020000UL)
        return SFNT_Err_Unknown_File_Format;

    face->ttc_header.tag = TTAG_ttcf;

    if (tag == TTAG_ttcf)
    {
        FT_Int n;


        FT_TRACE3(("sfnt_open_font: file is a collection\n"));

        if (FT_STREAM_READ_FIELDS(ttc_header_fields, &face->ttc_header))
            return error;

        /* now read the offsets of each font in the file */
        if (FT_NEW_ARRAY(face->ttc_header.offsets, face->ttc_header.count))
            return error;

        if (FT_FRAME_ENTER(face->ttc_header.count * 4L))
            return error;

        for (n = 0; n < face->ttc_header.count; n++)
            face->ttc_header.offsets[n] = FT_GET_ULONG();

        FT_FRAME_EXIT();
    }
    else
    {
        FT_TRACE3(("sfnt_open_font: synthesize TTC\n"));

        face->ttc_header.version = 1 << 16;
        face->ttc_header.count   = 1;

        if (FT_NEW(face->ttc_header.offsets))
            return error;

        face->ttc_header.offsets[0] = offset;
    }

    return error;
}

  FTC_Manager_New( FT_Library          library,
                   FT_UInt             max_faces,
                   FT_UInt             max_sizes,
                   FT_ULong            max_bytes,
                   FTC_Face_Requester  requester,
                   FT_Pointer          req_data,
                   FTC_Manager        *amanager )
  {
    FT_Error     error;
    FT_Memory    memory;
    FTC_Manager  manager = 0;


    if ( !library )
      return FTC_Err_Invalid_Library_Handle;

    memory = library->memory;

    if ( FT_NEW( manager ) )
      goto Exit;

    if ( max_faces == 0 )
      max_faces = FTC_MAX_FACES_DEFAULT;

    if ( max_sizes == 0 )
      max_sizes = FTC_MAX_SIZES_DEFAULT;

    if ( max_bytes == 0 )
      max_bytes = FTC_MAX_BYTES_DEFAULT;

    error = FT_LruList_New( &ftc_face_list_class,
                            max_faces,
                            manager,
                            memory,
                            &manager->faces_list );
    if ( error )
      goto Exit;

    error = FT_LruList_New( &ftc_size_list_class,
                            max_sizes,
                            manager,
                            memory,
                            &manager->sizes_list );
    if ( error )
      goto Exit;

    manager->library      = library;
    manager->max_weight   = max_bytes;
    manager->cur_weight   = 0;

    manager->request_face = requester;
    manager->request_data = req_data;

    ftc_family_table_init( &manager->families );

    *amanager = manager;

  Exit:
    if ( error && manager )
    {
      FT_LruList_Destroy( manager->faces_list );
      FT_LruList_Destroy( manager->sizes_list );
      FT_FREE( manager );
    }

    return error;
  }

  static FT_Error
  psh_globals_new( FT_Memory     memory,
                   T1_Private*   priv,
                   PSH_Globals  *aglobals )
  {
    PSH_Globals  globals = NULL;
    FT_Error     error;


    if ( !FT_NEW( globals ) )
    {
      FT_UInt    count;
      FT_Short*  read;


      globals->memory = memory;

      /* copy standard widths */
      {
        PSH_Dimension  dim   = &globals->dimension[1];
        PSH_Width      write = dim->stdw.widths;


        write->org = priv->standard_width[0];
        write++;

        read = priv->snap_widths;
        for ( count = priv->num_snap_widths; count > 0; count-- )
        {
          write->org = *read;
          write++;
          read++;
        }

        dim->stdw.count = priv->num_snap_widths + 1;
      }

      /* copy standard heights */
      {
        PSH_Dimension  dim = &globals->dimension[0];
        PSH_Width      write = dim->stdw.widths;


        write->org = priv->standard_height[0];
        write++;
        read = priv->snap_heights;
        for ( count = priv->num_snap_heights; count > 0; count-- )
        {
          write->org = *read;
          write++;
          read++;
        }

        dim->stdw.count = priv->num_snap_heights + 1;
      }

      /* copy blue zones */
      psh_blues_set_zones( &globals->blues, priv->num_blue_values,
                           priv->blue_values, priv->num_other_blues,
                           priv->other_blues, priv->blue_fuzz, 0 );

      psh_blues_set_zones( &globals->blues, priv->num_family_blues,
                           priv->family_blues, priv->num_family_other_blues,
                           priv->family_other_blues, priv->blue_fuzz, 1 );

      /* limit the BlueScale value to `1 / max_of_blue_zone_heights' */
      {
        FT_Fixed  max_scale;
        FT_Short  max_height = 1;


        max_height = psh_calc_max_height( priv->num_blue_values,
                                          priv->blue_values,
                                          max_height );
        max_height = psh_calc_max_height( priv->num_other_blues,
                                          priv->other_blues,
                                          max_height );
        max_height = psh_calc_max_height( priv->num_family_blues,
                                          priv->family_blues,
                                          max_height );
        max_height = psh_calc_max_height( priv->num_family_other_blues,
                                          priv->family_other_blues,
                                          max_height );

        /* BlueScale is scaled 1000 times */
        max_scale = FT_DivFix( 1000, max_height );
        globals->blues.blue_scale = priv->blue_scale < max_scale
                                      ? priv->blue_scale
                                      : max_scale;
      }

      globals->blues.blue_shift = priv->blue_shift;
      globals->blues.blue_fuzz  = priv->blue_fuzz;

      globals->dimension[0].scale_mult  = 0;
      globals->dimension[0].scale_delta = 0;
      globals->dimension[1].scale_mult  = 0;
      globals->dimension[1].scale_delta = 0;

#ifdef DEBUG_HINTER
//.........这里部分代码省略.........