t42objs.c

奇趣公司比较新的qt/emd版本

        FT_CMap_Class    clazz;


        charmap.face = root;

        /* first of all, try to synthetize a Unicode charmap */
        charmap.platform_id = 3;
        charmap.encoding_id = 1;
        charmap.encoding    = FT_ENCODING_UNICODE;

        FT_CMap_New( cmap_classes->unicode, NULL, &charmap, NULL );

        /* now, generate an Adobe Standard encoding when appropriate */
        charmap.platform_id = 7;
        clazz               = NULL;

        switch ( type1->encoding_type )
        {
        case T1_ENCODING_TYPE_STANDARD:
          charmap.encoding    = FT_ENCODING_ADOBE_STANDARD;
          charmap.encoding_id = 0;
          clazz               = cmap_classes->standard;
          break;

        case T1_ENCODING_TYPE_EXPERT:
          charmap.encoding    = FT_ENCODING_ADOBE_EXPERT;
          charmap.encoding_id = 1;
          clazz               = cmap_classes->expert;
          break;

        case T1_ENCODING_TYPE_ARRAY:
          charmap.encoding    = FT_ENCODING_ADOBE_CUSTOM;
          charmap.encoding_id = 2;
          clazz               = cmap_classes->custom;
          break;

        case T1_ENCODING_TYPE_ISOLATIN1:
          charmap.encoding    = FT_ENCODING_ADOBE_LATIN_1;
          charmap.encoding_id = 3;
          clazz               = cmap_classes->unicode;
          break;

        default:
          ;
        }

        if ( clazz )
          FT_CMap_New( clazz, NULL, &charmap, NULL );

#if 0
        /* Select default charmap */
        if ( root->num_charmaps )
          root->charmap = root->charmaps[0];
#endif
      }
    }
  Exit:
    return error;
  }


  FT_LOCAL_DEF( void )
  T42_Face_Done( T42_Face  face )
  {
    T1_Font      type1;
    PS_FontInfo  info;
    FT_Memory    memory;


    if ( face )
    {
      type1  = &face->type1;
      info   = &type1->font_info;
      memory = face->root.memory;

      /* delete internal ttf face prior to freeing face->ttf_data */
      if ( face->ttf_face )
        FT_Done_Face( face->ttf_face );

      /* release font info strings */
      FT_FREE( info->version );
      FT_FREE( info->notice );
      FT_FREE( info->full_name );
      FT_FREE( info->family_name );
      FT_FREE( info->weight );

      /* release top dictionary */
      FT_FREE( type1->charstrings_len );
      FT_FREE( type1->charstrings );
      FT_FREE( type1->glyph_names );

      FT_FREE( type1->charstrings_block );
      FT_FREE( type1->glyph_names_block );

      FT_FREE( type1->encoding.char_index );
      FT_FREE( type1->encoding.char_name );
      FT_FREE( type1->font_name );

      FT_FREE( face->ttf_data );

#if 0
      /* release afm data if present */
      if ( face->afm_data )
        T1_Done_AFM( memory, (T1_AFM*)face->afm_data );
#endif

      /* release unicode map, if any */
      FT_FREE( face->unicode_map.maps );
      face->unicode_map.num_maps = 0;

      face->root.family_name = 0;
      face->root.style_name  = 0;
    }
  }


  /*************************************************************************/
  /*                                                                       */
  /* <Function>                                                            */
  /*    T42_Driver_Init                                                    */
  /*                                                                       */
  /* <Description>                                                         */
  /*    Initializes a given Type 42 driver object.                         */
  /*                                                                       */
  /* <Input>                                                               */
  /*    driver :: A handle to the target driver object.                    */
  /*                                                                       */
  /* <Return>                                                              */
  /*    FreeType error code.  0 means success.                             */
  /*                                                                       */
  FT_LOCAL_DEF( FT_Error )
  T42_Driver_Init( T42_Driver  driver )
  {
    FT_Module  ttmodule;


    ttmodule = FT_Get_Module( FT_MODULE(driver)->library, "truetype" );
    driver->ttclazz = (FT_Driver_Class)ttmodule->clazz;

    return T42_Err_Ok;
  }


  FT_LOCAL_DEF( void )
  T42_Driver_Done( T42_Driver  driver )
  {
    FT_UNUSED( driver );
  }


  FT_LOCAL_DEF( FT_Error )
  T42_Size_Init( T42_Size  size )
  {
    FT_Face   face = size->root.face;
    T42_Face  t42face = (T42_Face)face;
    FT_Size   ttsize;
    FT_Error  error   = T42_Err_Ok;


    error = FT_New_Size( t42face->ttf_face, &ttsize );
    size->ttsize = ttsize;

    FT_Activate_Size( ttsize );

    return error;
  }


  FT_LOCAL_DEF( FT_Error )
  T42_Size_Request( T42_Size         size,
                    FT_Size_Request  req )
  {
    T42_Face  face = (T42_Face)size->root.face;
    FT_Error  error;


    FT_Activate_Size( size->ttsize );

    error = FT_Request_Size( face->ttf_face, req );
    if ( !error )
      ( (FT_Size)size )->metrics = face->ttf_face->size->metrics;

    return error;
  }


  FT_LOCAL_DEF( FT_Error )
  T42_Size_Select( T42_Size  size,
                   FT_ULong  strike_index )
  {
    T42_Face  face = (T42_Face)size->root.face;
    FT_Error  error;


    FT_Activate_Size( size->ttsize );

    error = FT_Select_Size( face->ttf_face, strike_index );
    if ( !error )
      ( (FT_Size)size )->metrics = face->ttf_face->size->metrics;

    return error;

  }


  FT_LOCAL_DEF( void )
  T42_Size_Done( T42_Size  size )
  {
    FT_Face      face    = size->root.face;
    T42_Face     t42face = (T42_Face)face;
    FT_ListNode  node;


    node = FT_List_Find( &t42face->ttf_face->sizes_list, size->ttsize );
    if ( node )
    {
      FT_Done_Size( size->ttsize );
      size->ttsize = NULL;
    }
  }


  FT_LOCAL_DEF( FT_Error )
  T42_GlyphSlot_Init( T42_GlyphSlot  slot )
  {
    FT_Face       face    = slot->root.face;
    T42_Face      t42face = (T42_Face)face;
    FT_GlyphSlot  ttslot;
    FT_Error      error   = T42_Err_Ok;


    if ( face->glyph == NULL )
    {
      /* First glyph slot for this face */
      slot->ttslot = t42face->ttf_face->glyph;
    }
    else
    {
      error = FT_New_GlyphSlot( t42face->ttf_face, &ttslot );
      slot->ttslot = ttslot;
    }

    return error;
  }


  FT_LOCAL_DEF( void )
  T42_GlyphSlot_Done( T42_GlyphSlot slot )
  {
    FT_Done_GlyphSlot( slot->ttslot );
  }


  static void
  t42_glyphslot_clear( FT_GlyphSlot  slot )
  {
    /* free bitmap if needed */
    ft_glyphslot_free_bitmap( slot );

    /* clear all public fields in the glyph slot */
    FT_ZERO( &slot->metrics );
    FT_ZERO( &slot->outline );
    FT_ZERO( &slot->bitmap );

    slot->bitmap_left   = 0;
    slot->bitmap_top    = 0;
    slot->num_subglyphs = 0;
    slot->subglyphs     = 0;
    slot->control_data  = 0;
    slot->control_len   = 0;
    slot->other         = 0;
    slot->format        = FT_GLYPH_FORMAT_NONE;

    slot->linearHoriAdvance = 0;
    slot->linearVertAdvance = 0;
  }


  FT_LOCAL_DEF( FT_Error )
  T42_GlyphSlot_Load( FT_GlyphSlot  glyph,
                      FT_Size       size,
                      FT_UInt       glyph_index,
                      FT_Int32      load_flags )
  {
    FT_Error         error;
    T42_GlyphSlot    t42slot = (T42_GlyphSlot)glyph;
    T42_Size         t42size = (T42_Size)size;
    FT_Driver_Class  ttclazz = ((T42_Driver)glyph->face->driver)->ttclazz;


    t42_glyphslot_clear( t42slot->ttslot );
    error = ttclazz->load_glyph( t42slot->ttslot,
                                 t42size->ttsize,
                                 glyph_index,
                                 load_flags | FT_LOAD_NO_BITMAP );

    if ( !error )
    {
      glyph->metrics = t42slot->ttslot->metrics;

      glyph->linearHoriAdvance = t42slot->ttslot->linearHoriAdvance;
      glyph->linearVertAdvance = t42slot->ttslot->linearVertAdvance;

      glyph->format  = t42slot->ttslot->format;
      glyph->outline = t42slot->ttslot->outline;

      glyph->bitmap      = t42slot->ttslot->bitmap;
      glyph->bitmap_left = t42slot->ttslot->bitmap_left;
      glyph->bitmap_top  = t42slot->ttslot->bitmap_top;

      glyph->num_subglyphs = t42slot->ttslot->num_subglyphs;
      glyph->subglyphs     = t42slot->ttslot->subglyphs;

      glyph->control_data  = t42slot->ttslot->control_data;
      glyph->control_len   = t42slot->ttslot->control_len;
    }

    return error;
  }


/* END */