Esempio n. 1
0
  T1_Load_Glyph( FT_GlyphSlot  t1glyph,          /* T1_GlyphSlot */
                 FT_Size       t1size,           /* T1_Size      */
                 FT_UInt       glyph_index,
                 FT_Int32      load_flags )
  {
    T1_GlyphSlot            glyph = (T1_GlyphSlot)t1glyph;
    FT_Error                error;
#ifdef __REACTOS__
    T1_DecoderRec *decoder = malloc(sizeof(T1_DecoderRec));
    if (!decoder)
      return FT_THROW( Out_Of_Memory );
/* Ugly but it allows us to reduce the diff */
#define decoder (*decoder)
    {
#else
    T1_DecoderRec           decoder;
#endif
    T1_Face                 face = (T1_Face)t1glyph->face;
    FT_Bool                 hinting;
    FT_Bool                 scaled;
    FT_Bool                 force_scaling = FALSE;
    T1_Font                 type1         = &face->type1;
    PSAux_Service           psaux         = (PSAux_Service)face->psaux;
    const T1_Decoder_Funcs  decoder_funcs = psaux->t1_decoder_funcs;

    FT_Matrix               font_matrix;
    FT_Vector               font_offset;
    FT_Data                 glyph_data;
    FT_Bool                 must_finish_decoder = FALSE;
#ifdef FT_CONFIG_OPTION_INCREMENTAL
    FT_Bool                 glyph_data_loaded = 0;
#endif


#ifdef FT_CONFIG_OPTION_INCREMENTAL
    if ( glyph_index >= (FT_UInt)face->root.num_glyphs &&
         !face->root.internal->incremental_interface   )
#else
    if ( glyph_index >= (FT_UInt)face->root.num_glyphs )
#endif /* FT_CONFIG_OPTION_INCREMENTAL */
    {
      error = FT_THROW( Invalid_Argument );
      goto Exit;
    }

    FT_TRACE1(( "T1_Load_Glyph: glyph index %d\n", glyph_index ));

    FT_ASSERT( ( face->len_buildchar == 0 ) == ( face->buildchar == NULL ) );

    if ( load_flags & FT_LOAD_NO_RECURSE )
      load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING;

    if ( t1size )
    {
      glyph->x_scale = t1size->metrics.x_scale;
      glyph->y_scale = t1size->metrics.y_scale;
    }
    else
    {
      glyph->x_scale = 0x10000L;
      glyph->y_scale = 0x10000L;
    }

    t1glyph->outline.n_points   = 0;
    t1glyph->outline.n_contours = 0;

    hinting = FT_BOOL( ( load_flags & FT_LOAD_NO_SCALE   ) == 0 &&
                       ( load_flags & FT_LOAD_NO_HINTING ) == 0 );
    scaled  = FT_BOOL( ( load_flags & FT_LOAD_NO_SCALE   ) == 0 );

    glyph->hint     = hinting;
    glyph->scaled   = scaled;
    t1glyph->format = FT_GLYPH_FORMAT_OUTLINE;

    error = decoder_funcs->init( &decoder,
                                 t1glyph->face,
                                 t1size,
                                 t1glyph,
                                 (FT_Byte**)type1->glyph_names,
                                 face->blend,
                                 FT_BOOL( hinting ),
                                 FT_LOAD_TARGET_MODE( load_flags ),
                                 T1_Parse_Glyph );
    if ( error )
      goto Exit;

    must_finish_decoder = TRUE;

    decoder.builder.no_recurse = FT_BOOL(
                                   ( load_flags & FT_LOAD_NO_RECURSE ) != 0 );

    decoder.num_subrs     = type1->num_subrs;
    decoder.subrs         = type1->subrs;
    decoder.subrs_len     = type1->subrs_len;
    decoder.subrs_hash    = type1->subrs_hash;

    decoder.buildchar     = face->buildchar;
    decoder.len_buildchar = face->len_buildchar;

    /* now load the unscaled outline */
    error = T1_Parse_Glyph_And_Get_Char_String( &decoder, glyph_index,
                                                &glyph_data,
                                                &force_scaling );
    if ( error )
      goto Exit;
#ifdef FT_CONFIG_OPTION_INCREMENTAL
    glyph_data_loaded = 1;
#endif

    hinting     = glyph->hint;
    font_matrix = decoder.font_matrix;
    font_offset = decoder.font_offset;

    /* save new glyph tables */
    decoder_funcs->done( &decoder );

    must_finish_decoder = FALSE;

    /* now, set the metrics -- this is rather simple, as   */
    /* the left side bearing is the xMin, and the top side */
    /* bearing the yMax                                    */
    if ( !error )
    {
      t1glyph->outline.flags &= FT_OUTLINE_OWNER;
      t1glyph->outline.flags |= FT_OUTLINE_REVERSE_FILL;

      /* for composite glyphs, return only left side bearing and */
      /* advance width                                           */
      if ( load_flags & FT_LOAD_NO_RECURSE )
      {
        FT_Slot_Internal  internal = t1glyph->internal;


        t1glyph->metrics.horiBearingX =
          FIXED_TO_INT( decoder.builder.left_bearing.x );
        t1glyph->metrics.horiAdvance  =
          FIXED_TO_INT( decoder.builder.advance.x );

        internal->glyph_matrix      = font_matrix;
        internal->glyph_delta       = font_offset;
        internal->glyph_transformed = 1;
      }
      else
      {
        FT_BBox            cbox;
        FT_Glyph_Metrics*  metrics = &t1glyph->metrics;


        /* copy the _unscaled_ advance width */
        metrics->horiAdvance =
          FIXED_TO_INT( decoder.builder.advance.x );
        t1glyph->linearHoriAdvance =
          FIXED_TO_INT( decoder.builder.advance.x );
        t1glyph->internal->glyph_transformed = 0;

        if ( load_flags & FT_LOAD_VERTICAL_LAYOUT )
        {
          /* make up vertical ones */
          metrics->vertAdvance = ( face->type1.font_bbox.yMax -
                                   face->type1.font_bbox.yMin ) >> 16;
          t1glyph->linearVertAdvance = metrics->vertAdvance;
        }
        else
        {
          metrics->vertAdvance =
            FIXED_TO_INT( decoder.builder.advance.y );
          t1glyph->linearVertAdvance =
            FIXED_TO_INT( decoder.builder.advance.y );
        }

        t1glyph->format = FT_GLYPH_FORMAT_OUTLINE;

        if ( t1size && t1size->metrics.y_ppem < 24 )
          t1glyph->outline.flags |= FT_OUTLINE_HIGH_PRECISION;

#if 1
        /* apply the font matrix, if any */
        if ( font_matrix.xx != 0x10000L || font_matrix.yy != 0x10000L ||
             font_matrix.xy != 0        || font_matrix.yx != 0        )
        {
          FT_Outline_Transform( &t1glyph->outline, &font_matrix );

          metrics->horiAdvance = FT_MulFix( metrics->horiAdvance,
                                            font_matrix.xx );
          metrics->vertAdvance = FT_MulFix( metrics->vertAdvance,
                                            font_matrix.yy );
        }

        if ( font_offset.x || font_offset.y )
        {
          FT_Outline_Translate( &t1glyph->outline,
                                font_offset.x,
                                font_offset.y );

          metrics->horiAdvance += font_offset.x;
          metrics->vertAdvance += font_offset.y;
        }
#endif

        if ( ( load_flags & FT_LOAD_NO_SCALE ) == 0 || force_scaling )
        {
          /* scale the outline and the metrics */
          FT_Int       n;
          FT_Outline*  cur = decoder.builder.base;
          FT_Vector*   vec = cur->points;
          FT_Fixed     x_scale = glyph->x_scale;
          FT_Fixed     y_scale = glyph->y_scale;


          /* First of all, scale the points, if we are not hinting */
          if ( !hinting || ! decoder.builder.hints_funcs )
            for ( n = cur->n_points; n > 0; n--, vec++ )
            {
              vec->x = FT_MulFix( vec->x, x_scale );
              vec->y = FT_MulFix( vec->y, y_scale );
            }

          /* Then scale the metrics */
          metrics->horiAdvance = FT_MulFix( metrics->horiAdvance, x_scale );
          metrics->vertAdvance = FT_MulFix( metrics->vertAdvance, y_scale );
        }

        /* compute the other metrics */
        FT_Outline_Get_CBox( &t1glyph->outline, &cbox );

        metrics->width  = cbox.xMax - cbox.xMin;
        metrics->height = cbox.yMax - cbox.yMin;

        metrics->horiBearingX = cbox.xMin;
        metrics->horiBearingY = cbox.yMax;

        if ( load_flags & FT_LOAD_VERTICAL_LAYOUT )
        {
          /* make up vertical ones */
          ft_synthesize_vertical_metrics( metrics,
                                          metrics->vertAdvance );
        }
      }
Esempio n. 2
0
  cid_slot_load_glyph( FT_GlyphSlot  cidglyph,      /* CID_GlyphSlot */
                       FT_Size       cidsize,       /* CID_Size      */
                       FT_UInt       glyph_index,
                       FT_Int32      load_flags )
  {
    CID_GlyphSlot  glyph = (CID_GlyphSlot)cidglyph;
    FT_Error       error;
    T1_DecoderRec  decoder;
    CID_Face       face = (CID_Face)cidglyph->face;
    FT_Bool        hinting;

    PSAux_Service  psaux = (PSAux_Service)face->psaux;
    FT_Matrix      font_matrix;
    FT_Vector      font_offset;


    if ( glyph_index >= (FT_UInt)face->root.num_glyphs )
    {
      error = CID_Err_Invalid_Argument;
      goto Exit;
    }

    if ( load_flags & FT_LOAD_NO_RECURSE )
      load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING;

    glyph->x_scale = cidsize->metrics.x_scale;
    glyph->y_scale = cidsize->metrics.y_scale;

    cidglyph->outline.n_points   = 0;
    cidglyph->outline.n_contours = 0;

    hinting = FT_BOOL( ( load_flags & FT_LOAD_NO_SCALE   ) == 0 &&
                       ( load_flags & FT_LOAD_NO_HINTING ) == 0 );

    cidglyph->format = FT_GLYPH_FORMAT_OUTLINE;

    error = psaux->t1_decoder_funcs->init( &decoder,
                                           cidglyph->face,
                                           cidsize,
                                           cidglyph,
                                           0, /* glyph names -- XXX */
                                           0, /* blend == 0 */
                                           hinting,
                                           FT_LOAD_TARGET_MODE( load_flags ),
                                           cid_load_glyph );
    if ( error )
      goto Exit;

    /* TODO: initialize decoder.len_buildchar and decoder.buildchar */
    /*       if we ever support CID-keyed multiple master fonts     */

    /* set up the decoder */
    decoder.builder.no_recurse = FT_BOOL(
      ( ( load_flags & FT_LOAD_NO_RECURSE ) != 0 ) );

    error = cid_load_glyph( &decoder, glyph_index );
    if ( error )
      goto Exit;

    font_matrix = decoder.font_matrix;
    font_offset = decoder.font_offset;

    /* save new glyph tables */
    psaux->t1_decoder_funcs->done( &decoder );

    /* now set the metrics -- this is rather simple, as    */
    /* the left side bearing is the xMin, and the top side */
    /* bearing the yMax                                    */
    cidglyph->outline.flags &= FT_OUTLINE_OWNER;
    cidglyph->outline.flags |= FT_OUTLINE_REVERSE_FILL;

    /* for composite glyphs, return only left side bearing and */
    /* advance width                                           */
    if ( load_flags & FT_LOAD_NO_RECURSE )
    {
      FT_Slot_Internal  internal = cidglyph->internal;


      cidglyph->metrics.horiBearingX =
        FIXED_TO_INT( decoder.builder.left_bearing.x );
      cidglyph->metrics.horiAdvance =
        FIXED_TO_INT( decoder.builder.advance.x );

      internal->glyph_matrix      = font_matrix;
      internal->glyph_delta       = font_offset;
      internal->glyph_transformed = 1;
    }
    else
    {
      FT_BBox            cbox;
      FT_Glyph_Metrics*  metrics = &cidglyph->metrics;
      FT_Vector          advance;


      /* copy the _unscaled_ advance width */
      metrics->horiAdvance =
        FIXED_TO_INT( decoder.builder.advance.x );
      cidglyph->linearHoriAdvance =
        FIXED_TO_INT( decoder.builder.advance.x );
      cidglyph->internal->glyph_transformed = 0;

      /* make up vertical ones */
      metrics->vertAdvance        = ( face->cid.font_bbox.yMax -
                                      face->cid.font_bbox.yMin ) >> 16;
      cidglyph->linearVertAdvance = metrics->vertAdvance;

      cidglyph->format            = FT_GLYPH_FORMAT_OUTLINE;

      if ( cidsize->metrics.y_ppem < 24 )
        cidglyph->outline.flags |= FT_OUTLINE_HIGH_PRECISION;

      /* apply the font matrix */
      FT_Outline_Transform( &cidglyph->outline, &font_matrix );

      FT_Outline_Translate( &cidglyph->outline,
                            font_offset.x,
                            font_offset.y );

      advance.x = metrics->horiAdvance;
      advance.y = 0;
      FT_Vector_Transform( &advance, &font_matrix );
      metrics->horiAdvance = advance.x + font_offset.x;

      advance.x = 0;
      advance.y = metrics->vertAdvance;
      FT_Vector_Transform( &advance, &font_matrix );
      metrics->vertAdvance = advance.y + font_offset.y;

      if ( ( load_flags & FT_LOAD_NO_SCALE ) == 0 )
      {
        /* scale the outline and the metrics */
        FT_Int       n;
        FT_Outline*  cur = decoder.builder.base;
        FT_Vector*   vec = cur->points;
        FT_Fixed     x_scale = glyph->x_scale;
        FT_Fixed     y_scale = glyph->y_scale;


        /* First of all, scale the points */
        if ( !hinting || !decoder.builder.hints_funcs )
          for ( n = cur->n_points; n > 0; n--, vec++ )
          {
            vec->x = FT_MulFix( vec->x, x_scale );
            vec->y = FT_MulFix( vec->y, y_scale );
          }

        /* Then scale the metrics */
        metrics->horiAdvance = FT_MulFix( metrics->horiAdvance, x_scale );
        metrics->vertAdvance = FT_MulFix( metrics->vertAdvance, y_scale );
      }

      /* compute the other metrics */
      FT_Outline_Get_CBox( &cidglyph->outline, &cbox );

      metrics->width  = cbox.xMax - cbox.xMin;
      metrics->height = cbox.yMax - cbox.yMin;

      metrics->horiBearingX = cbox.xMin;
      metrics->horiBearingY = cbox.yMax;

      if ( load_flags & FT_LOAD_VERTICAL_LAYOUT )
      {
        /* make up vertical ones */
        ft_synthesize_vertical_metrics( metrics,
                                        metrics->vertAdvance );
      }
    }

  Exit:
    return error;
  }
Esempio n. 3
0
File: cffgload.c Progetto: 93i/godot
  cff_slot_load( CFF_GlyphSlot  glyph,
                 CFF_Size       size,
                 FT_UInt        glyph_index,
                 FT_Int32       load_flags )
  {
    FT_Error     error;
    CFF_Decoder  decoder;
    PS_Decoder   psdecoder;
    TT_Face      face = (TT_Face)glyph->root.face;
    FT_Bool      hinting, scaled, force_scaling;
    CFF_Font     cff  = (CFF_Font)face->extra.data;

    PSAux_Service            psaux         = (PSAux_Service)face->psaux;
    const CFF_Decoder_Funcs  decoder_funcs = psaux->cff_decoder_funcs;

    FT_Matrix    font_matrix;
    FT_Vector    font_offset;


    force_scaling = FALSE;

    /* in a CID-keyed font, consider `glyph_index' as a CID and map */
    /* it immediately to the real glyph_index -- if it isn't a      */
    /* subsetted font, glyph_indices and CIDs are identical, though */
    if ( cff->top_font.font_dict.cid_registry != 0xFFFFU &&
         cff->charset.cids                               )
    {
      /* don't handle CID 0 (.notdef) which is directly mapped to GID 0 */
      if ( glyph_index != 0 )
      {
        glyph_index = cff_charset_cid_to_gindex( &cff->charset,
                                                 glyph_index );
        if ( glyph_index == 0 )
          return FT_THROW( Invalid_Argument );
      }
    }
    else if ( glyph_index >= cff->num_glyphs )
      return FT_THROW( Invalid_Argument );

    if ( load_flags & FT_LOAD_NO_RECURSE )
      load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING;

    glyph->x_scale = 0x10000L;
    glyph->y_scale = 0x10000L;
    if ( size )
    {
      glyph->x_scale = size->root.metrics.x_scale;
      glyph->y_scale = size->root.metrics.y_scale;
    }

#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS

    /* try to load embedded bitmap if any              */
    /*                                                 */
    /* XXX: The convention should be emphasized in     */
    /*      the documents because it can be confusing. */
    if ( size )
    {
      CFF_Face      cff_face = (CFF_Face)size->root.face;
      SFNT_Service  sfnt     = (SFNT_Service)cff_face->sfnt;
      FT_Stream     stream   = cff_face->root.stream;


      if ( size->strike_index != 0xFFFFFFFFUL      &&
           sfnt->load_eblc                         &&
           ( load_flags & FT_LOAD_NO_BITMAP ) == 0 )
      {
        TT_SBit_MetricsRec  metrics;


        error = sfnt->load_sbit_image( face,
                                       size->strike_index,
                                       glyph_index,
                                       (FT_UInt)load_flags,
                                       stream,
                                       &glyph->root.bitmap,
                                       &metrics );

        if ( !error )
        {
          FT_Bool    has_vertical_info;
          FT_UShort  advance;
          FT_Short   dummy;


          glyph->root.outline.n_points   = 0;
          glyph->root.outline.n_contours = 0;

          glyph->root.metrics.width  = (FT_Pos)metrics.width  << 6;
          glyph->root.metrics.height = (FT_Pos)metrics.height << 6;

          glyph->root.metrics.horiBearingX = (FT_Pos)metrics.horiBearingX << 6;
          glyph->root.metrics.horiBearingY = (FT_Pos)metrics.horiBearingY << 6;
          glyph->root.metrics.horiAdvance  = (FT_Pos)metrics.horiAdvance  << 6;

          glyph->root.metrics.vertBearingX = (FT_Pos)metrics.vertBearingX << 6;
          glyph->root.metrics.vertBearingY = (FT_Pos)metrics.vertBearingY << 6;
          glyph->root.metrics.vertAdvance  = (FT_Pos)metrics.vertAdvance  << 6;

          glyph->root.format = FT_GLYPH_FORMAT_BITMAP;

          if ( load_flags & FT_LOAD_VERTICAL_LAYOUT )
          {
            glyph->root.bitmap_left = metrics.vertBearingX;
            glyph->root.bitmap_top  = metrics.vertBearingY;
          }
          else
          {
            glyph->root.bitmap_left = metrics.horiBearingX;
            glyph->root.bitmap_top  = metrics.horiBearingY;
          }

          /* compute linear advance widths */

          (void)( (SFNT_Service)face->sfnt )->get_metrics( face, 0,
                                                           glyph_index,
                                                           &dummy,
                                                           &advance );
          glyph->root.linearHoriAdvance = advance;

          has_vertical_info = FT_BOOL(
                                face->vertical_info                   &&
                                face->vertical.number_Of_VMetrics > 0 );

          /* get the vertical metrics from the vmtx table if we have one */
          if ( has_vertical_info )
          {
            (void)( (SFNT_Service)face->sfnt )->get_metrics( face, 1,
                                                             glyph_index,
                                                             &dummy,
                                                             &advance );
            glyph->root.linearVertAdvance = advance;
          }
          else
          {
            /* make up vertical ones */
            if ( face->os2.version != 0xFFFFU )
              glyph->root.linearVertAdvance = (FT_Pos)
                ( face->os2.sTypoAscender - face->os2.sTypoDescender );
            else
              glyph->root.linearVertAdvance = (FT_Pos)
                ( face->horizontal.Ascender - face->horizontal.Descender );
          }

          return error;
        }
      }
    }

#endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */

    /* return immediately if we only want the embedded bitmaps */
    if ( load_flags & FT_LOAD_SBITS_ONLY )
      return FT_THROW( Invalid_Argument );

    /* if we have a CID subfont, use its matrix (which has already */
    /* been multiplied with the root matrix)                       */

    /* this scaling is only relevant if the PS hinter isn't active */
    if ( cff->num_subfonts )
    {
      FT_Long  top_upm, sub_upm;
      FT_Byte  fd_index = cff_fd_select_get( &cff->fd_select,
                                             glyph_index );


      if ( fd_index >= cff->num_subfonts )
        fd_index = (FT_Byte)( cff->num_subfonts - 1 );

      top_upm = (FT_Long)cff->top_font.font_dict.units_per_em;
      sub_upm = (FT_Long)cff->subfonts[fd_index]->font_dict.units_per_em;


      font_matrix = cff->subfonts[fd_index]->font_dict.font_matrix;
      font_offset = cff->subfonts[fd_index]->font_dict.font_offset;

      if ( top_upm != sub_upm )
      {
        glyph->x_scale = FT_MulDiv( glyph->x_scale, top_upm, sub_upm );
        glyph->y_scale = FT_MulDiv( glyph->y_scale, top_upm, sub_upm );

        force_scaling = TRUE;
      }
    }
    else
    {
      font_matrix = cff->top_font.font_dict.font_matrix;
      font_offset = cff->top_font.font_dict.font_offset;
    }

    glyph->root.outline.n_points   = 0;
    glyph->root.outline.n_contours = 0;

    /* top-level code ensures that FT_LOAD_NO_HINTING is set */
    /* if FT_LOAD_NO_SCALE is active                         */
    hinting = FT_BOOL( ( load_flags & FT_LOAD_NO_HINTING ) == 0 );
    scaled  = FT_BOOL( ( load_flags & FT_LOAD_NO_SCALE   ) == 0 );

    glyph->hint        = hinting;
    glyph->scaled      = scaled;
    glyph->root.format = FT_GLYPH_FORMAT_OUTLINE;  /* by default */

    {
#ifdef CFF_CONFIG_OPTION_OLD_ENGINE
      PS_Driver  driver = (PS_Driver)FT_FACE_DRIVER( face );
#endif


      FT_Byte*  charstring;
      FT_ULong  charstring_len;


      decoder_funcs->init( &decoder, face, size, glyph, hinting,
                           FT_LOAD_TARGET_MODE( load_flags ),
                           cff_get_glyph_data,
                           cff_free_glyph_data );

      /* this is for pure CFFs */
      if ( load_flags & FT_LOAD_ADVANCE_ONLY )
        decoder.width_only = TRUE;

      decoder.builder.no_recurse =
        (FT_Bool)( load_flags & FT_LOAD_NO_RECURSE );

      /* now load the unscaled outline */
      error = cff_get_glyph_data( face, glyph_index,
                                  &charstring, &charstring_len );
      if ( error )
        goto Glyph_Build_Finished;

      error = decoder_funcs->prepare( &decoder, size, glyph_index );
      if ( error )
        goto Glyph_Build_Finished;

#ifdef CFF_CONFIG_OPTION_OLD_ENGINE
      /* choose which CFF renderer to use */
      if ( driver->hinting_engine == FT_HINTING_FREETYPE )
        error = decoder_funcs->parse_charstrings_old( &decoder,
                                                      charstring,
                                                      charstring_len,
                                                      0 );
      else
#endif
      {
        psaux->ps_decoder_init( &psdecoder, &decoder, FALSE );

        error = decoder_funcs->parse_charstrings( &psdecoder,
                                                  charstring,
                                                  charstring_len );

        /* Adobe's engine uses 16.16 numbers everywhere;              */
        /* as a consequence, glyphs larger than 2000ppem get rejected */
        if ( FT_ERR_EQ( error, Glyph_Too_Big ) )
        {
          /* this time, we retry unhinted and scale up the glyph later on */
          /* (the engine uses and sets the hardcoded value 0x10000 / 64 = */
          /* 0x400 for both `x_scale' and `y_scale' in this case)         */
          hinting       = FALSE;
          force_scaling = TRUE;
          glyph->hint   = hinting;

          error = decoder_funcs->parse_charstrings( &psdecoder,
                                                    charstring,
                                                    charstring_len );
        }
      }

      cff_free_glyph_data( face, &charstring, charstring_len );

      if ( error )
        goto Glyph_Build_Finished;

#ifdef FT_CONFIG_OPTION_INCREMENTAL
      /* Control data and length may not be available for incremental */
      /* fonts.                                                       */
      if ( face->root.internal->incremental_interface )
      {
        glyph->root.control_data = NULL;
        glyph->root.control_len = 0;
      }
      else
#endif /* FT_CONFIG_OPTION_INCREMENTAL */

      /* We set control_data and control_len if charstrings is loaded. */
      /* See how charstring loads at cff_index_access_element() in     */
      /* cffload.c.                                                    */
      {
        CFF_Index  csindex = &cff->charstrings_index;


        if ( csindex->offsets )
        {
          glyph->root.control_data = csindex->bytes +
                                     csindex->offsets[glyph_index] - 1;
          glyph->root.control_len  = (FT_Long)charstring_len;
        }
      }

  Glyph_Build_Finished:
      /* save new glyph tables, if no error */
      if ( !error )
        decoder.builder.funcs.done( &decoder.builder );
      /* XXX: anything to do for broken glyph entry? */
    }

#ifdef FT_CONFIG_OPTION_INCREMENTAL

    /* Incremental fonts can optionally override the metrics. */
    if ( !error                                                               &&
         face->root.internal->incremental_interface                           &&
         face->root.internal->incremental_interface->funcs->get_glyph_metrics )
    {
      FT_Incremental_MetricsRec  metrics;


      metrics.bearing_x = decoder.builder.left_bearing.x;
      metrics.bearing_y = 0;
      metrics.advance   = decoder.builder.advance.x;
      metrics.advance_v = decoder.builder.advance.y;

      error = face->root.internal->incremental_interface->funcs->get_glyph_metrics(
                face->root.internal->incremental_interface->object,
                glyph_index, FALSE, &metrics );

      decoder.builder.left_bearing.x = metrics.bearing_x;
      decoder.builder.advance.x      = metrics.advance;
      decoder.builder.advance.y      = metrics.advance_v;
    }

#endif /* FT_CONFIG_OPTION_INCREMENTAL */

    if ( !error )
    {
      /* Now, set the metrics -- this is rather simple, as   */
      /* the left side bearing is the xMin, and the top side */
      /* bearing the yMax.                                   */

      /* For composite glyphs, return only left side bearing and */
      /* advance width.                                          */
      if ( load_flags & FT_LOAD_NO_RECURSE )
      {
        FT_Slot_Internal  internal = glyph->root.internal;


        glyph->root.metrics.horiBearingX = decoder.builder.left_bearing.x;
        glyph->root.metrics.horiAdvance  = decoder.glyph_width;
        internal->glyph_matrix           = font_matrix;
        internal->glyph_delta            = font_offset;
        internal->glyph_transformed      = 1;
      }
      else
      {
        FT_BBox            cbox;
        FT_Glyph_Metrics*  metrics = &glyph->root.metrics;
        FT_Bool            has_vertical_info;


        if ( face->horizontal.number_Of_HMetrics )
        {
          FT_Short   horiBearingX = 0;
          FT_UShort  horiAdvance  = 0;


          ( (SFNT_Service)face->sfnt )->get_metrics( face, 0,
                                                     glyph_index,
                                                     &horiBearingX,
                                                     &horiAdvance );
          metrics->horiAdvance          = horiAdvance;
          metrics->horiBearingX         = horiBearingX;
          glyph->root.linearHoriAdvance = horiAdvance;
        }
        else
        {
          /* copy the _unscaled_ advance width */
          metrics->horiAdvance          = decoder.glyph_width;
          glyph->root.linearHoriAdvance = decoder.glyph_width;
        }

        glyph->root.internal->glyph_transformed = 0;

        has_vertical_info = FT_BOOL( face->vertical_info                   &&
                                     face->vertical.number_Of_VMetrics > 0 );

        /* get the vertical metrics from the vmtx table if we have one */
        if ( has_vertical_info )
        {
          FT_Short   vertBearingY = 0;
          FT_UShort  vertAdvance  = 0;


          ( (SFNT_Service)face->sfnt )->get_metrics( face, 1,
                                                     glyph_index,
                                                     &vertBearingY,
                                                     &vertAdvance );
          metrics->vertBearingY = vertBearingY;
          metrics->vertAdvance  = vertAdvance;
        }
        else
        {
          /* make up vertical ones */
          if ( face->os2.version != 0xFFFFU )
            metrics->vertAdvance = (FT_Pos)( face->os2.sTypoAscender -
                                             face->os2.sTypoDescender );
          else
            metrics->vertAdvance = (FT_Pos)( face->horizontal.Ascender -
                                             face->horizontal.Descender );
        }

        glyph->root.linearVertAdvance = metrics->vertAdvance;

        glyph->root.format = FT_GLYPH_FORMAT_OUTLINE;

        glyph->root.outline.flags = 0;
        if ( size && size->root.metrics.y_ppem < 24 )
          glyph->root.outline.flags |= FT_OUTLINE_HIGH_PRECISION;

        glyph->root.outline.flags |= FT_OUTLINE_REVERSE_FILL;

        /* apply the font matrix, if any */
        if ( font_matrix.xx != 0x10000L || font_matrix.yy != 0x10000L ||
             font_matrix.xy != 0        || font_matrix.yx != 0        )
        {
          FT_Outline_Transform( &glyph->root.outline, &font_matrix );

          metrics->horiAdvance = FT_MulFix( metrics->horiAdvance,
                                            font_matrix.xx );
          metrics->vertAdvance = FT_MulFix( metrics->vertAdvance,
                                            font_matrix.yy );
        }

        if ( font_offset.x || font_offset.y )
        {
          FT_Outline_Translate( &glyph->root.outline,
                                font_offset.x,
                                font_offset.y );

          metrics->horiAdvance += font_offset.x;
          metrics->vertAdvance += font_offset.y;
        }

        if ( ( load_flags & FT_LOAD_NO_SCALE ) == 0 || force_scaling )
        {
          /* scale the outline and the metrics */
          FT_Int       n;
          FT_Outline*  cur     = &glyph->root.outline;
          FT_Vector*   vec     = cur->points;
          FT_Fixed     x_scale = glyph->x_scale;
          FT_Fixed     y_scale = glyph->y_scale;


          /* First of all, scale the points */
          if ( !hinting || !decoder.builder.hints_funcs )
            for ( n = cur->n_points; n > 0; n--, vec++ )
            {
              vec->x = FT_MulFix( vec->x, x_scale );
              vec->y = FT_MulFix( vec->y, y_scale );
            }

          /* Then scale the metrics */
          metrics->horiAdvance = FT_MulFix( metrics->horiAdvance, x_scale );
          metrics->vertAdvance = FT_MulFix( metrics->vertAdvance, y_scale );
        }

        /* compute the other metrics */
        FT_Outline_Get_CBox( &glyph->root.outline, &cbox );

        metrics->width  = cbox.xMax - cbox.xMin;
        metrics->height = cbox.yMax - cbox.yMin;

        metrics->horiBearingX = cbox.xMin;
        metrics->horiBearingY = cbox.yMax;

        if ( has_vertical_info )
          metrics->vertBearingX = metrics->horiBearingX -
                                    metrics->horiAdvance / 2;
        else
        {
          if ( load_flags & FT_LOAD_VERTICAL_LAYOUT )
            ft_synthesize_vertical_metrics( metrics,
                                            metrics->vertAdvance );
        }
      }
    }

    return error;
  }
Esempio n. 4
0
  T1_Load_Glyph( T1_GlyphSlot  glyph,
                 T1_Size       size,
                 FT_UInt       glyph_index,
                 FT_Int32      load_flags )
  {
    FT_Error                error;
    T1_DecoderRec           decoder;
    T1_Face                 face = (T1_Face)glyph->root.face;
    FT_Bool                 hinting;
    T1_Font                 type1         = &face->type1;
    PSAux_Service           psaux         = (PSAux_Service)face->psaux;
    const T1_Decoder_Funcs  decoder_funcs = psaux->t1_decoder_funcs;

    FT_Matrix               font_matrix;
    FT_Vector               font_offset;
    FT_Data                 glyph_data;
    FT_Bool                 must_finish_decoder = FALSE;
#ifdef FT_CONFIG_OPTION_INCREMENTAL
    FT_Bool                 glyph_data_loaded = 0;
#endif


    if ( glyph_index >= (FT_UInt)face->root.num_glyphs )
    {
      error = T1_Err_Invalid_Argument;
      goto Exit;
    }

    FT_ASSERT( ( face->len_buildchar == 0 ) == ( face->buildchar == NULL ) );

    if ( load_flags & FT_LOAD_NO_RECURSE )
      load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING;

    if ( size )
    {
    glyph->x_scale = size->root.metrics.x_scale;
    glyph->y_scale = size->root.metrics.y_scale;
    }
    else
    {
      glyph->x_scale = 0x10000L;
      glyph->y_scale = 0x10000L;
    }

    glyph->root.outline.n_points   = 0;
    glyph->root.outline.n_contours = 0;

    hinting = FT_BOOL( ( load_flags & FT_LOAD_NO_SCALE   ) == 0 &&
                       ( load_flags & FT_LOAD_NO_HINTING ) == 0 );

    glyph->root.format = FT_GLYPH_FORMAT_OUTLINE;

    error = decoder_funcs->init( &decoder,
                                 (FT_Face)face,
                                 (FT_Size)size,
                                 (FT_GlyphSlot)glyph,
                                 (FT_Byte**)type1->glyph_names,
                                 face->blend,
                                 FT_BOOL( hinting ),
                                 FT_LOAD_TARGET_MODE( load_flags ),
                                 T1_Parse_Glyph );
    if ( error )
      goto Exit;

    must_finish_decoder = TRUE;

    decoder.builder.no_recurse = FT_BOOL(
                                   ( load_flags & FT_LOAD_NO_RECURSE ) != 0 );

    decoder.num_subrs     = type1->num_subrs;
    decoder.subrs         = type1->subrs;
    decoder.subrs_len     = type1->subrs_len;

    decoder.buildchar     = face->buildchar;
    decoder.len_buildchar = face->len_buildchar;

    /* now load the unscaled outline */
    error = T1_Parse_Glyph_And_Get_Char_String( &decoder, glyph_index,
                                                &glyph_data );
    if ( error )
      goto Exit;
#ifdef FT_CONFIG_OPTION_INCREMENTAL
    glyph_data_loaded = 1;
#endif

    font_matrix = decoder.font_matrix;
    font_offset = decoder.font_offset;

    /* save new glyph tables */
    decoder_funcs->done( &decoder );

    must_finish_decoder = FALSE;

    /* now, set the metrics -- this is rather simple, as   */
    /* the left side bearing is the xMin, and the top side */
    /* bearing the yMax                                    */
    if ( !error )
    {
      glyph->root.outline.flags &= FT_OUTLINE_OWNER;
      glyph->root.outline.flags |= FT_OUTLINE_REVERSE_FILL;

      /* for composite glyphs, return only left side bearing and */
      /* advance width                                           */
      if ( load_flags & FT_LOAD_NO_RECURSE )
      {
        FT_Slot_Internal  internal = glyph->root.internal;


        glyph->root.metrics.horiBearingX =
          FIXED_TO_INT( decoder.builder.left_bearing.x );
        glyph->root.metrics.horiAdvance  =
          FIXED_TO_INT( decoder.builder.advance.x );

        internal->glyph_matrix           = font_matrix;
        internal->glyph_delta            = font_offset;
        internal->glyph_transformed      = 1;
      }
      else
      {
        FT_BBox            cbox;
        FT_Glyph_Metrics*  metrics = &glyph->root.metrics;
        FT_Vector          advance;


        /* copy the _unscaled_ advance width */
        metrics->horiAdvance =
          FIXED_TO_INT( decoder.builder.advance.x );
        glyph->root.linearHoriAdvance =
          FIXED_TO_INT( decoder.builder.advance.x );
        glyph->root.internal->glyph_transformed = 0;

        /* make up vertical ones */
        metrics->vertAdvance = ( face->type1.font_bbox.yMax -
                                 face->type1.font_bbox.yMin ) >> 16;
        glyph->root.linearVertAdvance = metrics->vertAdvance;

        glyph->root.format = FT_GLYPH_FORMAT_OUTLINE;

        if ( size && size->root.metrics.y_ppem < 24 )
          glyph->root.outline.flags |= FT_OUTLINE_HIGH_PRECISION;

#if 1
        /* apply the font matrix, if any */
        if ( font_matrix.xx != 0x10000L || font_matrix.yy != font_matrix.xx ||
             font_matrix.xy != 0        || font_matrix.yx != 0              )
          FT_Outline_Transform( &glyph->root.outline, &font_matrix );

        if ( font_offset.x || font_offset.y )
          FT_Outline_Translate( &glyph->root.outline,
                                font_offset.x,
                                font_offset.y );

        advance.x = metrics->horiAdvance;
        advance.y = 0;
        FT_Vector_Transform( &advance, &font_matrix );
        metrics->horiAdvance = advance.x + font_offset.x;
        advance.x = 0;
        advance.y = metrics->vertAdvance;
        FT_Vector_Transform( &advance, &font_matrix );
        metrics->vertAdvance = advance.y + font_offset.y;
#endif

        if ( ( load_flags & FT_LOAD_NO_SCALE ) == 0 )
        {
          /* scale the outline and the metrics */
          FT_Int       n;
          FT_Outline*  cur = decoder.builder.base;
          FT_Vector*   vec = cur->points;
          FT_Fixed     x_scale = glyph->x_scale;
          FT_Fixed     y_scale = glyph->y_scale;


          /* First of all, scale the points, if we are not hinting */
          if ( !hinting || ! decoder.builder.hints_funcs )
            for ( n = cur->n_points; n > 0; n--, vec++ )
            {
              vec->x = FT_MulFix( vec->x, x_scale );
              vec->y = FT_MulFix( vec->y, y_scale );
            }

          /* Then scale the metrics */
          metrics->horiAdvance  = FT_MulFix( metrics->horiAdvance,  x_scale );
          metrics->vertAdvance  = FT_MulFix( metrics->vertAdvance,  y_scale );
        }

        /* compute the other metrics */
        FT_Outline_Get_CBox( &glyph->root.outline, &cbox );

        metrics->width  = cbox.xMax - cbox.xMin;
        metrics->height = cbox.yMax - cbox.yMin;

        metrics->horiBearingX = cbox.xMin;
        metrics->horiBearingY = cbox.yMax;

        /* make up vertical ones */
        ft_synthesize_vertical_metrics( metrics,
                                        metrics->vertAdvance );
      }

      /* Set control data to the glyph charstrings.  Note that this is */
      /* _not_ zero-terminated.                                        */
      glyph->root.control_data = (FT_Byte*)glyph_data.pointer;
      glyph->root.control_len  = glyph_data.length;
    }