psft.h File Reference

#include "pstypes.h"
#include "psglue.h"

Include dependency graph for psft.h:

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Go to the source code of this file.

Classes
struct	CF2_OutlineRec_

Macros
#define	CF2_NDEBUG

Typedefs
typedef struct CF2_OutlineRec_	CF2_OutlineRec
typedef struct CF2_OutlineRec_ *	CF2_Outline

Functions
FT_BEGIN_HEADER	cf2_decoder_parse_charstrings (PS_Decoder *decoder, FT_Byte *charstring_base, FT_ULong charstring_len)
	cf2_getSubfont (PS_Decoder *decoder)
	cf2_getVStore (PS_Decoder *decoder)
	cf2_getMaxstack (PS_Decoder *decoder)
	cf2_getPpemY (PS_Decoder *decoder)
	cf2_getStdVW (PS_Decoder *decoder)
	cf2_getStdHW (PS_Decoder *decoder)
	cf2_getBlueMetrics (PS_Decoder *decoder, CF2_Fixed *blueScale, CF2_Fixed *blueShift, CF2_Fixed *blueFuzz)
	cf2_getBlueValues (PS_Decoder *decoder, size_t *count, FT_Pos **data)
	cf2_getOtherBlues (PS_Decoder *decoder, size_t *count, FT_Pos **data)
	cf2_getFamilyBlues (PS_Decoder *decoder, size_t *count, FT_Pos **data)
	cf2_getFamilyOtherBlues (PS_Decoder *decoder, size_t *count, FT_Pos **data)
	cf2_getLanguageGroup (PS_Decoder *decoder)
	cf2_initGlobalRegionBuffer (PS_Decoder *decoder, CF2_Int subrNum, CF2_Buffer buf)
	cf2_getSeacComponent (PS_Decoder *decoder, CF2_Int code, CF2_Buffer buf)
	cf2_freeSeacComponent (PS_Decoder *decoder, CF2_Buffer buf)
	cf2_initLocalRegionBuffer (PS_Decoder *decoder, CF2_Int subrNum, CF2_Buffer buf)
	cf2_getDefaultWidthX (PS_Decoder *decoder)
	cf2_getNominalWidthX (PS_Decoder *decoder)
	cf2_getT1SeacComponent (PS_Decoder *decoder, FT_UInt glyph_index, CF2_Buffer buf)
	cf2_freeT1SeacComponent (PS_Decoder *decoder, CF2_Buffer buf)
	cf2_outline_reset (CF2_Outline outline)
	cf2_outline_close (CF2_Outline outline)

Macro Definition Documentation

CF2_NDEBUG

#define CF2_NDEBUG

Definition at line 47 of file psft.h.

Typedef Documentation

CF2_Outline

typedef struct CF2_OutlineRec_ * CF2_Outline

CF2_OutlineRec

typedef struct CF2_OutlineRec_ CF2_OutlineRec

Function Documentation

cf2_decoder_parse_charstrings()

FT_BEGIN_HEADER cf2_decoder_parse_charstrings	(	PS_Decoder *	decoder,
		FT_Byte *	charstring_base,
		FT_ULong	charstring_len
	)

Definition at line 308 of file psft.c.

  {
    FT_Memory  memory;
    FT_Error   error = FT_Err_Ok;
    CF2_Font   font;

    FT_Bool    is_t1 = decoder->builder.is_t1;


    FT_ASSERT( decoder &&
               ( is_t1 || decoder->cff ) );

    if ( is_t1 && !decoder->current_subfont )
    {
      FT_ERROR(( "cf2_decoder_parse_charstrings (Type 1): "
                 "SubFont missing. Use `t1_make_subfont' first\n" ));
      return FT_THROW( Invalid_Table );
    }

    memory = decoder->builder.memory;

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

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

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

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

      font->memory = memory;

      if ( !is_t1 )
        font->cffload = (FT_Service_CFFLoad)decoder->cff->cffload;

      /* 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 */

      PS_Builder*  builder = &decoder->builder;
      PS_Driver    driver  = (PS_Driver)FT_FACE_DRIVER( builder->face );

      FT_Bool  no_stem_darkening_driver =
                 driver->no_stem_darkening;
      FT_Char  no_stem_darkening_font =
                 builder->face->internal->no_stem_darkening;

      /* 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 );

      if ( is_t1 )
        font->isCFF2 = FALSE;
      else
      {
        /* copy isCFF2 boolean from TT_Face to CF2_Font */
        font->isCFF2 = ((TT_Face)builder->face)->is_cff2;
      }
      font->isT1 = is_t1;

      font->renderingFlags = 0;
      if ( hinted )
        font->renderingFlags |= CF2_FlagsHinted;
      if ( scaled && ( !no_stem_darkening_font        ||
                       ( no_stem_darkening_font < 0 &&
                         !no_stem_darkening_driver  ) ) )
        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;
    }
  }

cf2_freeSeacComponent()

cf2_freeSeacComponent	(	PS_Decoder *	decoder,
		CF2_Buffer	buf
	)

Definition at line 708 of file psft.c.

  {
    FT_ASSERT( decoder );
    FT_ASSERT( !decoder->builder.is_t1 );

    decoder->free_glyph_callback( (TT_Face)decoder->builder.face,
                                  (FT_Byte**)&buf->start,
                                  (FT_ULong)( buf->end - buf->start ) );
  }

Referenced by cf2_interpT2CharString().

cf2_freeT1SeacComponent()

cf2_freeT1SeacComponent	(	PS_Decoder *	decoder,
		CF2_Buffer	buf
	)

Definition at line 767 of file psft.c.

  {
    T1_Face  face;
    FT_Data  data;


    FT_ASSERT( decoder );

#ifdef FT_CONFIG_OPTION_INCREMENTAL
    face = (T1_Face)decoder->builder.face;

    data.pointer = buf->start;
    data.length  = (FT_Int)( buf->end - buf->start );

    if ( face->root.internal->incremental_interface )
      face->root.internal->incremental_interface->funcs->free_glyph_data(
        face->root.internal->incremental_interface->object,
        &data );
#endif /* FT_CONFIG_OPTION_INCREMENTAL */
  }

Referenced by cf2_interpT2CharString().

cf2_getBlueMetrics()

cf2_getBlueMetrics	(	PS_Decoder *	decoder,
		CF2_Fixed *	blueScale,
		CF2_Fixed *	blueShift,
		CF2_Fixed *	blueFuzz
	)

Definition at line 549 of file psft.c.

  {
    FT_ASSERT( decoder && decoder->current_subfont );

    *blueScale = FT_DivFix(
                   decoder->current_subfont->private_dict.blue_scale,
                   cf2_intToFixed( 1000 ) );
    *blueShift = cf2_intToFixed(
                   decoder->current_subfont->private_dict.blue_shift );
    *blueFuzz  = cf2_intToFixed(
                   decoder->current_subfont->private_dict.blue_fuzz );
  }

Referenced by cf2_blues_init().

cf2_getBlueValues()

cf2_getBlueValues	(	PS_Decoder *	decoder,
		size_t *	count,
		FT_Pos **	data
	)

Definition at line 569 of file psft.c.

  {
    FT_ASSERT( decoder && decoder->current_subfont );

    *count = decoder->current_subfont->private_dict.num_blue_values;
    *data  = (FT_Pos*)
               &decoder->current_subfont->private_dict.blue_values;
  }

Referenced by cf2_blues_init().

cf2_getDefaultWidthX()

cf2_getDefaultWidthX

(

PS_Decoder *

decoder

)

Definition at line 843 of file psft.c.

  {
    FT_ASSERT( decoder && decoder->current_subfont );

    return cf2_intToFixed(
             decoder->current_subfont->private_dict.default_width );
  }

Referenced by cf2_interpT2CharString().

cf2_getFamilyBlues()

cf2_getFamilyBlues	(	PS_Decoder *	decoder,
		size_t *	count,
		FT_Pos **	data
	)

Definition at line 595 of file psft.c.

  {
    FT_ASSERT( decoder && decoder->current_subfont );

    *count = decoder->current_subfont->private_dict.num_family_blues;
    *data  = (FT_Pos*)
               &decoder->current_subfont->private_dict.family_blues;
  }

Referenced by cf2_blues_init().

cf2_getFamilyOtherBlues()

cf2_getFamilyOtherBlues	(	PS_Decoder *	decoder,
		size_t *	count,
		FT_Pos **	data
	)

Definition at line 608 of file psft.c.

  {
    FT_ASSERT( decoder && decoder->current_subfont );

    *count = decoder->current_subfont->private_dict.num_family_other_blues;
    *data  = (FT_Pos*)
               &decoder->current_subfont->private_dict.family_other_blues;
  }

Referenced by cf2_blues_init().

cf2_getLanguageGroup()

cf2_getLanguageGroup

(

PS_Decoder *

decoder

)

Definition at line 621 of file psft.c.

  {
    FT_ASSERT( decoder && decoder->current_subfont );

    return decoder->current_subfont->private_dict.language_group;
  }

Referenced by cf2_blues_init().

cf2_getMaxstack()

cf2_getMaxstack

(

PS_Decoder *

decoder

)

Definition at line 468 of file psft.c.

  {
    FT_ASSERT( decoder && decoder->cff );

    return decoder->cff->top_font.font_dict.maxstack;
  }

Referenced by cf2_interpT2CharString().

cf2_getNominalWidthX()

cf2_getNominalWidthX

(

PS_Decoder *

decoder

)

Definition at line 853 of file psft.c.

  {
    FT_ASSERT( decoder && decoder->current_subfont );

    return cf2_intToFixed(
             decoder->current_subfont->private_dict.nominal_width );
  }

Referenced by cf2_doStems(), and cf2_interpT2CharString().

cf2_getOtherBlues()

cf2_getOtherBlues	(	PS_Decoder *	decoder,
		size_t *	count,
		FT_Pos **	data
	)

Definition at line 582 of file psft.c.

  {
    FT_ASSERT( decoder && decoder->current_subfont );

    *count = decoder->current_subfont->private_dict.num_other_blues;
    *data  = (FT_Pos*)
               &decoder->current_subfont->private_dict.other_blues;
  }

Referenced by cf2_blues_init().

cf2_getPpemY()

cf2_getPpemY

(

PS_Decoder *

decoder

)

Definition at line 504 of file psft.c.

  {
    FT_ASSERT( decoder                     &&
               decoder->builder.face       &&
               decoder->builder.face->size );

    /*
     * Note that `y_ppem' can be zero if there wasn't a call to
     * `FT_Set_Char_Size' or something similar.  However, this isn't a
     * problem since we come to this place in the code only if
     * FT_LOAD_NO_SCALE is set (the other case gets caught by
     * `cf2_checkTransform').  The ppem value is needed to compute the stem
     * darkening, which is disabled for getting the unscaled outline.
     *
     */
    return cf2_intToFixed(
             decoder->builder.face->size->metrics.y_ppem );
  }

Referenced by cf2_font_setup().

cf2_getSeacComponent()

cf2_getSeacComponent	(	PS_Decoder *	decoder,
		CF2_Int	code,
		CF2_Buffer	buf
	)

Definition at line 660 of file psft.c.

  {
    CF2_Int   gid;
    FT_Byte*  charstring;
    FT_ULong  len;
    FT_Error  error;


    FT_ASSERT( decoder );
    FT_ASSERT( !decoder->builder.is_t1 );

    FT_ZERO( buf );

#ifdef FT_CONFIG_OPTION_INCREMENTAL
    /* Incremental fonts don't necessarily have valid charsets.        */
    /* They use the character code, not the glyph index, in this case. */
    if ( decoder->builder.face->internal->incremental_interface )
      gid = code;
    else
#endif /* FT_CONFIG_OPTION_INCREMENTAL */
    {
      gid = cff_lookup_glyph_by_stdcharcode( decoder->cff, code );
      if ( gid < 0 )
        return FT_THROW( Invalid_Glyph_Format );
    }

    error = decoder->get_glyph_callback( (TT_Face)decoder->builder.face,
                                         (CF2_UInt)gid,
                                         &charstring,
                                         &len );
    /* TODO: for now, just pass the FreeType error through */
    if ( error )
      return error;

    /* assume input has been validated */
    FT_ASSERT( charstring + len >= charstring );

    buf->start = charstring;
    buf->end   = charstring + len;
    buf->ptr   = buf->start;

    return FT_Err_Ok;
  }

Referenced by cf2_interpT2CharString().

cf2_getStdHW()

cf2_getStdHW

(

PS_Decoder *

decoder

)

Definition at line 538 of file psft.c.

  {
    FT_ASSERT( decoder && decoder->current_subfont );

    return cf2_intToFixed(
             decoder->current_subfont->private_dict.standard_width );
  }

Referenced by cf2_font_setup().

cf2_getStdVW()

cf2_getStdVW

(

PS_Decoder *

decoder

)

Definition at line 528 of file psft.c.

  {
    FT_ASSERT( decoder && decoder->current_subfont );

    return cf2_intToFixed(
             decoder->current_subfont->private_dict.standard_height );
  }

Referenced by cf2_font_setup().

cf2_getSubfont()

cf2_getSubfont

(

PS_Decoder *

decoder

)

Definition at line 448 of file psft.c.

  {
    FT_ASSERT( decoder && decoder->current_subfont );

    return decoder->current_subfont;
  }

Referenced by cf2_font_setup().

cf2_getT1SeacComponent()

cf2_getT1SeacComponent	(	PS_Decoder *	decoder,
		FT_UInt	glyph_index,
		CF2_Buffer	buf
	)

Definition at line 721 of file psft.c.

  {
    FT_Data   glyph_data;
    FT_Error  error = FT_Err_Ok;
    T1_Face   face  = (T1_Face)decoder->builder.face;
    T1_Font   type1 = &face->type1;

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


    /* For incremental fonts get the character data using the */
    /* callback function.                                     */
    if ( inc )
      error = inc->funcs->get_glyph_data( inc->object,
                                          glyph_index, &glyph_data );
    else
#endif
    /* For ordinary fonts get the character data stored in the face record. */
    {
      glyph_data.pointer = type1->charstrings[glyph_index];
      glyph_data.length  = (FT_Int)type1->charstrings_len[glyph_index];
    }

    if ( !error )
    {
      FT_Byte*  charstring_base = (FT_Byte*)glyph_data.pointer;
      FT_ULong  charstring_len  = (FT_ULong)glyph_data.length;


      FT_ASSERT( charstring_base + charstring_len >= charstring_base );

      FT_ZERO( buf );
      buf->start =
      buf->ptr   = charstring_base;
      buf->end   = charstring_base + charstring_len;
    }

    return error;
  }

Referenced by cf2_interpT2CharString().

cf2_getVStore()

cf2_getVStore

(

PS_Decoder *

decoder

)

Definition at line 458 of file psft.c.

  {
    FT_ASSERT( decoder && decoder->cff );

    return &decoder->cff->vstore;
  }

Referenced by cf2_font_setup().

cf2_initGlobalRegionBuffer()

cf2_initGlobalRegionBuffer	(	PS_Decoder *	decoder,
		CF2_Int	subrNum,
		CF2_Buffer	buf
	)

Definition at line 632 of file psft.c.

  {
    CF2_UInt  idx;


    FT_ASSERT( decoder );

    FT_ZERO( buf );

    idx = (CF2_UInt)( subrNum + decoder->globals_bias );
    if ( idx >= decoder->num_globals )
      return TRUE;     /* error */

    FT_ASSERT( decoder->globals );

    buf->start =
    buf->ptr   = decoder->globals[idx];
    buf->end   = decoder->globals[idx + 1];

    return FALSE;      /* success */
  }

Referenced by cf2_interpT2CharString().

cf2_initLocalRegionBuffer()

cf2_initLocalRegionBuffer	(	PS_Decoder *	decoder,
		CF2_Int	subrNum,
		CF2_Buffer	buf
	)

Definition at line 791 of file psft.c.

  {
    CF2_UInt  idx;


    FT_ASSERT( decoder );

    FT_ZERO( buf );

    idx = (CF2_UInt)( subrNum + decoder->locals_bias );
    if ( idx >= decoder->num_locals )
      return TRUE;     /* error */

    FT_ASSERT( decoder->locals );

    buf->start = decoder->locals[idx];

    if ( decoder->builder.is_t1 )
    {
      /* The Type 1 driver stores subroutines without the seed bytes. */
      /* The CID driver stores subroutines with seed bytes.  This     */
      /* case is taken care of when decoder->subrs_len == 0.          */
      if ( decoder->locals_len )
        buf->end = buf->start + decoder->locals_len[idx];
      else
      {
        /* We are using subroutines from a CID font.  We must adjust */
        /* for the seed bytes.                                       */
        buf->start += ( decoder->lenIV >= 0 ? decoder->lenIV : 0 );
        buf->end    = decoder->locals[idx + 1];
      }

      if ( !buf->start )
      {
        FT_ERROR(( "cf2_initLocalRegionBuffer (Type 1 mode):"
                   " invoking empty subrs\n" ));
      }
    }
    else
    {
      buf->end = decoder->locals[idx + 1];
    }

    buf->ptr = buf->start;

    return FALSE;      /* success */
  }

Referenced by cf2_interpT2CharString().

cf2_outline_close()

cf2_outline_close

(

CF2_Outline

outline

)

Definition at line 877 of file psft.c.

  {
    PS_Decoder*  decoder = outline->decoder;


    FT_ASSERT( decoder );

    ps_builder_close_contour( &decoder->builder );

    FT_GlyphLoader_Add( decoder->builder.loader );
  }

Referenced by cf2_getGlyphOutline().

cf2_outline_reset()

cf2_outline_reset

(

CF2_Outline

outline

)

Definition at line 863 of file psft.c.

  {
    PS_Decoder*  decoder = outline->decoder;


    FT_ASSERT( decoder );

    outline->root.windingMomentum = 0;

    FT_GlyphLoader_Rewind( decoder->builder.loader );
  }

Referenced by cf2_getGlyphOutline().