Esempio n. 1
0
  tt_size_run_prep( TT_Size  size )
  {
    TT_Face         face = (TT_Face)size->root.face;
    TT_ExecContext  exec;
    FT_Error        error;


    /* debugging instances have their own context */
    if ( size->debug )
      exec = size->context;
    else
      exec = ( (TT_Driver)FT_FACE_DRIVER( face ) )->context;

    if ( !exec )
      return TT_Err_Could_Not_Find_Context;

    TT_Load_Context( exec, face, size );

    exec->callTop = 0;
    exec->top     = 0;

    exec->instruction_trap = FALSE;

    TT_Set_CodeRange( exec,
                      tt_coderange_cvt,
                      face->cvt_program,
                      face->cvt_program_size );

    TT_Clear_CodeRange( exec, tt_coderange_glyph );

    if ( face->cvt_program_size > 0 )
    {
      error = TT_Goto_CodeRange( exec, tt_coderange_cvt, 0 );

      if ( !error && !size->debug )
        error = face->interpreter( exec );
    }
    else
      error = TT_Err_Ok;

    /* save as default graphics state */
    size->GS = exec->GS;

    TT_Save_Context( exec, size );

    return error;
  }
Esempio n. 2
0
  static FT_Error
  T1_Parse_Glyph_And_Get_Char_String( T1_Decoder  decoder,
                                      FT_UInt     glyph_index,
                                      FT_Data*    char_string,
                                      FT_Bool*    force_scaling )
  {
    T1_Face   face  = (T1_Face)decoder->builder.face;
    T1_Font   type1 = &face->type1;
    FT_Error  error = FT_Err_Ok;

    PSAux_Service           psaux         = (PSAux_Service)face->psaux;
    const T1_Decoder_Funcs  decoder_funcs = psaux->t1_decoder_funcs;
    PS_Decoder              psdecoder;

#ifdef FT_CONFIG_OPTION_INCREMENTAL
    FT_Incremental_InterfaceRec *inc =
                      face->root.internal->incremental_interface;
#endif

#ifdef T1_CONFIG_OPTION_OLD_ENGINE
    PS_Driver  driver = (PS_Driver)FT_FACE_DRIVER( face );
#endif

    decoder->font_matrix = type1->font_matrix;
    decoder->font_offset = type1->font_offset;

#ifdef FT_CONFIG_OPTION_INCREMENTAL

    /* For incremental fonts get the character data using the */
    /* callback function.                                     */
    if ( inc )
      error = inc->funcs->get_glyph_data( inc->object,
                                          glyph_index, char_string );
    else

#endif /* FT_CONFIG_OPTION_INCREMENTAL */

    /* For ordinary fonts get the character data stored in the face record. */
    {
      char_string->pointer = type1->charstrings[glyph_index];
      char_string->length  = (FT_Int)type1->charstrings_len[glyph_index];
    }

    if ( !error )
    {
      /* choose which renderer to use */
#ifdef T1_CONFIG_OPTION_OLD_ENGINE
      if ( driver->hinting_engine == FT_HINTING_FREETYPE ||
           decoder->builder.metrics_only                 )
        error = decoder_funcs->parse_charstrings_old(
                  decoder,
                  (FT_Byte*)char_string->pointer,
                  (FT_UInt)char_string->length );
#else
      if ( decoder->builder.metrics_only )
        error = decoder_funcs->parse_metrics(
                  decoder,
                  (FT_Byte*)char_string->pointer,
                  (FT_UInt)char_string->length );
#endif
      else
      {
        CFF_SubFontRec  subfont;


        psaux->ps_decoder_init( &psdecoder, decoder, TRUE );

        psaux->t1_make_subfont( FT_FACE( face ),
                                &face->type1.private_dict, &subfont );
        psdecoder.current_subfont = &subfont;

        error = decoder_funcs->parse_charstrings(
                  &psdecoder,
                  (FT_Byte*)char_string->pointer,
                  (FT_ULong)char_string->length );

        /* 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)         */
          ((T1_GlyphSlot)decoder->builder.glyph)->hint = FALSE;

          *force_scaling = TRUE;

          error = decoder_funcs->parse_charstrings(
                    &psdecoder,
                    (FT_Byte*)char_string->pointer,
                    (FT_ULong)char_string->length );
        }
      }
    }

#ifdef FT_CONFIG_OPTION_INCREMENTAL

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


      metrics.bearing_x = FIXED_TO_INT( decoder->builder.left_bearing.x );
      metrics.bearing_y = 0;
      metrics.advance   = FIXED_TO_INT( decoder->builder.advance.x );
      metrics.advance_v = FIXED_TO_INT( decoder->builder.advance.y );

      error = inc->funcs->get_glyph_metrics( inc->object,
                                             glyph_index, FALSE, &metrics );

      decoder->builder.left_bearing.x = INT_TO_FIXED( metrics.bearing_x );
      decoder->builder.advance.x      = INT_TO_FIXED( metrics.advance );
      decoder->builder.advance.y      = INT_TO_FIXED( metrics.advance_v );
    }

#endif /* FT_CONFIG_OPTION_INCREMENTAL */

    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
  cf2_decoder_parse_charstrings( CFF_Decoder*  decoder,
                                 FT_Byte*      charstring_base,
                                 FT_ULong      charstring_len )
  {
    FT_Memory  memory;
    FT_Error   error = FT_Err_Ok;
    CF2_Font   font;


    FT_ASSERT( decoder && decoder->cff );

    memory = decoder->builder.memory;

    /* CF2 data is saved here across glyphs */
    font = (CF2_Font)decoder->cff->cf2_instance.data;

    /* on first glyph, allocate instance structure */
    if ( decoder->cff->cf2_instance.data == NULL )
    {
      decoder->cff->cf2_instance.finalizer =
        (FT_Generic_Finalizer)cf2_free_instance;

      if ( FT_ALLOC( decoder->cff->cf2_instance.data,
                     sizeof ( CF2_FontRec ) ) )
        return FT_THROW( Out_Of_Memory );

      font = (CF2_Font)decoder->cff->cf2_instance.data;

      font->memory = memory;

      /* initialize a client outline, to be shared by each glyph rendered */
      cf2_outline_init( &font->outline, font->memory, &font->error );
    }

    /* save decoder; it is a stack variable and will be different on each */
    /* call                                                               */
    font->decoder         = decoder;
    font->outline.decoder = decoder;

    {
      /* build parameters for Adobe engine */

      CFF_Builder*  builder = &decoder->builder;
      CFF_Driver    driver  = (CFF_Driver)FT_FACE_DRIVER( builder->face );

      /* local error */
      FT_Error       error2 = FT_Err_Ok;
      CF2_BufferRec  buf;
      CF2_Matrix     transform;
      CF2_F16Dot16   glyphWidth;

      FT_Bool  hinted;
      FT_Bool  scaled;


      /* FreeType has already looked up the GID; convert to         */
      /* `RegionBuffer', assuming that the input has been validated */
      FT_ASSERT( charstring_base + charstring_len >= charstring_base );

      FT_ZERO( &buf );
      buf.start =
      buf.ptr   = charstring_base;
      buf.end   = charstring_base + charstring_len;

      FT_ZERO( &transform );

      cf2_getScaleAndHintFlag( decoder,
                               &transform.a,
                               &transform.d,
                               &hinted,
                               &scaled );

      font->renderingFlags = 0;
      if ( hinted )
        font->renderingFlags |= CF2_FlagsHinted;
      if ( scaled && !driver->no_stem_darkening )
        font->renderingFlags |= CF2_FlagsDarkened;

      font->darkenParams[0] = driver->darken_params[0];
      font->darkenParams[1] = driver->darken_params[1];
      font->darkenParams[2] = driver->darken_params[2];
      font->darkenParams[3] = driver->darken_params[3];
      font->darkenParams[4] = driver->darken_params[4];
      font->darkenParams[5] = driver->darken_params[5];
      font->darkenParams[6] = driver->darken_params[6];
      font->darkenParams[7] = driver->darken_params[7];

      /* now get an outline for this glyph;      */
      /* also get units per em to validate scale */
      font->unitsPerEm = (CF2_Int)cf2_getUnitsPerEm( decoder );

      if ( scaled )
      {
        error2 = cf2_checkTransform( &transform, font->unitsPerEm );
        if ( error2 )
          return error2;
      }

      error2 = cf2_getGlyphOutline( font, &buf, &transform, &glyphWidth );
      if ( error2 )
        return FT_ERR( Invalid_File_Format );

      cf2_setGlyphWidth( &font->outline, glyphWidth );

      return FT_Err_Ok;
    }
  }
Esempio n. 5
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  tt_size_run_fpgm( TT_Size  size )
  {
    TT_Face         face = (TT_Face)size->root.face;
    TT_ExecContext  exec;
    FT_Error        error;


    /* debugging instances have their own context */
    if ( size->debug )
      exec = size->context;
    else
      exec = ( (TT_Driver)FT_FACE_DRIVER( face ) )->context;

    if ( !exec )
      return TT_Err_Could_Not_Find_Context;

    TT_Load_Context( exec, face, size );

    exec->callTop   = 0;
    exec->top       = 0;

    exec->period    = 64;
    exec->phase     = 0;
    exec->threshold = 0;

    exec->instruction_trap = FALSE;
    exec->F_dot_P = 0x10000L;

    {
      FT_Size_Metrics*  metrics    = &exec->metrics;
      TT_Size_Metrics*  tt_metrics = &exec->tt_metrics;


      metrics->x_ppem   = 0;
      metrics->y_ppem   = 0;
      metrics->x_scale  = 0;
      metrics->y_scale  = 0;

      tt_metrics->ppem  = 0;
      tt_metrics->scale = 0;
      tt_metrics->ratio = 0x10000L;
    }

    /* allow font program execution */
    TT_Set_CodeRange( exec,
                      tt_coderange_font,
                      face->font_program,
                      face->font_program_size );

    /* disable CVT and glyph programs coderange */
    TT_Clear_CodeRange( exec, tt_coderange_cvt );
    TT_Clear_CodeRange( exec, tt_coderange_glyph );

    if ( face->font_program_size > 0 )
    {
      error = TT_Goto_CodeRange( exec, tt_coderange_font, 0 );

      if ( !error )
        error = face->interpreter( exec );
    }
    else
      error = TT_Err_Ok;

    if ( !error )
      TT_Save_Context( exec, size );

    return error;
  }