FreeType »Docs »Format-Specific API » Type 1 Tables

Type 1 Tables¶

Synopsis¶

This section contains the definition of Type 1-specific tables, including structures related to other PostScript font formats.

PS_FontInfoRec¶

Defined in FT_TYPE1_TABLES_H (freetype/t1tables.h).

typedefstruct  PS_FontInfoRec_  {FT_String*  version;FT_String*  notice;FT_String*  full_name;FT_String*  family_name;FT_String*  weight;FT_Long     italic_angle;FT_Bool     is_fixed_pitch;FT_Short    underline_position;FT_UShort   underline_thickness;  }PS_FontInfoRec;

A structure used to model a Type 1 or Type 2 FontInfo dictionary. Note that for Multiple Master fonts, each instance has its own FontInfo dictionary.

PS_FontInfo¶

Defined in FT_TYPE1_TABLES_H (freetype/t1tables.h).

typedefstruct PS_FontInfoRec_*PS_FontInfo;

A handle to aPS_FontInfoRec structure.

PS_PrivateRec¶

Defined in FT_TYPE1_TABLES_H (freetype/t1tables.h).

typedefstruct  PS_PrivateRec_  {FT_Int     unique_id;FT_Int     lenIV;FT_Byte    num_blue_values;FT_Byte    num_other_blues;FT_Byte    num_family_blues;FT_Byte    num_family_other_blues;FT_Short   blue_values[14];FT_Short   other_blues[10];FT_Short   family_blues      [14];FT_Short   family_other_blues[10];FT_Fixed   blue_scale;FT_Int     blue_shift;FT_Int     blue_fuzz;FT_UShort  standard_width[1];FT_UShort  standard_height[1];FT_Byte    num_snap_widths;FT_Byte    num_snap_heights;FT_Bool    force_bold;FT_Bool    round_stem_up;FT_Short   snap_widths [13];  /* including std width  */FT_Short   snap_heights[13];  /* including std height */FT_Fixed   expansion_factor;FT_Long    language_group;FT_Long    password;FT_Short   min_feature[2];  }PS_PrivateRec;

A structure used to model a Type 1 or Type 2 private dictionary. Note that for Multiple Master fonts, each instance has its own Private dictionary.

PS_Private¶

Defined in FT_TYPE1_TABLES_H (freetype/t1tables.h).

typedefstruct PS_PrivateRec_*PS_Private;

A handle to aPS_PrivateRec structure.

CID_FaceDictRec¶

Defined in FT_TYPE1_TABLES_H (freetype/t1tables.h).

typedefstruct  CID_FaceDictRec_  {PS_PrivateRec  private_dict;FT_UInt        len_buildchar;FT_Fixed       forcebold_threshold;FT_Pos         stroke_width;FT_Fixed       expansion_factor;   /* this is a duplicate of           */                                       /* `private_dict->expansion_factor' */FT_Byte        paint_type;FT_Byte        font_type;FT_Matrix      font_matrix;FT_Vector      font_offset;FT_UInt        num_subrs;FT_ULong       subrmap_offset;FT_UInt        sd_bytes;  }CID_FaceDictRec;

A structure used to represent data in a CID top-level dictionary. In most cases, they are part of the font's ‘/FDArray’ array. Within a CID font file, such (internal) subfont dictionaries are enclosed by ‘%ADOBeginFontDict’ and ‘%ADOEndFontDict’ comments.

Note thatCID_FaceDictRec misses a field for the ‘/FontName’ keyword, specifying the subfont's name (the top-level font name is given by the ‘/CIDFontName’ keyword). This is an oversight, but it doesn't limit the ‘cid’ font module's functionality because FreeType neither needs this entry nor gives access to CID subfonts.

CID_FaceDict¶

Defined in FT_TYPE1_TABLES_H (freetype/t1tables.h).

typedefstruct CID_FaceDictRec_*CID_FaceDict;

A handle to aCID_FaceDictRec structure.

CID_FaceInfoRec¶

Defined in FT_TYPE1_TABLES_H (freetype/t1tables.h).

typedefstruct  CID_FaceInfoRec_  {FT_String*      cid_font_name;FT_Fixed        cid_version;FT_Int          cid_font_type;FT_String*      registry;FT_String*      ordering;FT_Int          supplement;PS_FontInfoRec  font_info;FT_BBox         font_bbox;FT_ULong        uid_base;FT_Int          num_xuid;FT_ULong        xuid[16];FT_ULong        cidmap_offset;FT_UInt         fd_bytes;FT_UInt         gd_bytes;FT_ULong        cid_count;FT_UInt         num_dicts;CID_FaceDict    font_dicts;FT_ULong        data_offset;  }CID_FaceInfoRec;

A structure used to represent CID Face information.

CID_FaceInfo¶

Defined in FT_TYPE1_TABLES_H (freetype/t1tables.h).

typedefstruct CID_FaceInfoRec_*CID_FaceInfo;

A handle to aCID_FaceInfoRec structure.

FT_Has_PS_Glyph_Names¶

Defined in FT_TYPE1_TABLES_H (freetype/t1tables.h).

  FT_EXPORT(FT_Int )FT_Has_PS_Glyph_Names(FT_Face  face );

Return true if a given face provides reliable PostScript glyph names. This is similar to using theFT_HAS_GLYPH_NAMES macro, except that certain fonts (mostly TrueType) contain incorrect glyph name tables.

When this function returns true, the caller is sure that the glyph names returned byFT_Get_Glyph_Name are reliable.

input

return

Boolean. True if glyph names are reliable.

FT_Get_PS_Font_Info¶

Defined in FT_TYPE1_TABLES_H (freetype/t1tables.h).

  FT_EXPORT(FT_Error )FT_Get_PS_Font_Info(FT_Face      face,PS_FontInfo  afont_info );

Retrieve thePS_FontInfoRec structure corresponding to a given PostScript font.

input

output

return

FreeType error code. 0 means success.

note

String pointers within thePS_FontInfoRec structure are owned by the face and don't need to be freed by the caller. Missing entries in the font's FontInfo dictionary are represented byNULL pointers.

The following font formats support this feature: ‘Type 1’, ‘Type 42’, ‘CFF’, ‘CID Type 1’. For other font formats this function returns theFT_Err_Invalid_Argument error code.

example

  PS_FontInfoRec  font_info;  error = FT_Get_PS_Font_Info( face, &font_info );  ...

FT_Get_PS_Font_Private¶

Defined in FT_TYPE1_TABLES_H (freetype/t1tables.h).

  FT_EXPORT(FT_Error )FT_Get_PS_Font_Private(FT_Face     face,PS_Private  afont_private );

Retrieve thePS_PrivateRec structure corresponding to a given PostScript font.

input

output

return

FreeType error code. 0 means success.

note

The string pointers within thePS_PrivateRec structure are owned by the face and don't need to be freed by the caller.

Only the ‘Type 1’ font format supports this feature. For other font formats this function returns theFT_Err_Invalid_Argument error code.

example

  PS_PrivateRec  font_private;  error = FT_Get_PS_Font_Private( face, &font_private );  ...

FT_Get_PS_Font_Value¶

Defined in FT_TYPE1_TABLES_H (freetype/t1tables.h).

  FT_EXPORT(FT_Long )FT_Get_PS_Font_Value(FT_Face       face,PS_Dict_Keys  key,FT_UInt       idx,void         *value,FT_Long       value_len );

Retrieve the value for the supplied key from a PostScript font.

input

output

return

The amount of memory (in bytes) required to hold the requested value (if it exists, -1 otherwise).

note

The values returned are not pointers into the internal structures of the face, but are ‘fresh’ copies, so that the memory containing them belongs to the calling application. This also enforces the ‘read-only’ nature of these values, i.e., this function cannot be used to manipulate the face.

value is a void pointer because the values returned can be of various types.

If eithervalue isNULL orvalue_len is too small, just the required memory size for the requested entry is returned.

Theidx parameter is used, not only to retrieve elements of, for example, the FontMatrix or FontBBox, but also to retrieve name keys from the CharStrings dictionary, and the charstrings themselves. It is ignored for atomic values.

PS_DICT_BLUE_SCALE returns a value that is scaled up by 1000. To get the value as in the font stream, you need to divide by 65536000.0 (to remove the FT_Fixed scale, and the x1000 scale).

IMPORTANT: Only key/value pairs read by the FreeType interpreter can be retrieved. So, for example, PostScript procedures such as NP, ND, and RD are not available. Arbitrary keys are, obviously, not be available either.

If the font's format is not PostScript-based, this function returns theFT_Err_Invalid_Argument error code.

since

2.4.8

T1_Blend_Flags¶

Defined in FT_TYPE1_TABLES_H (freetype/t1tables.h).

typedefenum  T1_Blend_Flags_  {    /* required fields in a FontInfo blend dictionary */T1_BLEND_UNDERLINE_POSITION = 0,T1_BLEND_UNDERLINE_THICKNESS,T1_BLEND_ITALIC_ANGLE,    /* required fields in a Private blend dictionary */T1_BLEND_BLUE_VALUES,T1_BLEND_OTHER_BLUES,T1_BLEND_STANDARD_WIDTH,T1_BLEND_STANDARD_HEIGHT,T1_BLEND_STEM_SNAP_WIDTHS,T1_BLEND_STEM_SNAP_HEIGHTS,T1_BLEND_BLUE_SCALE,T1_BLEND_BLUE_SHIFT,T1_BLEND_FAMILY_BLUES,T1_BLEND_FAMILY_OTHER_BLUES,T1_BLEND_FORCE_BOLD,    T1_BLEND_MAX    /* do not remove */  }T1_Blend_Flags;  /* these constants are deprecated; use the corresponding */  /* `T1_Blend_Flags` values instead                       */#define t1_blend_underline_positionT1_BLEND_UNDERLINE_POSITION#define t1_blend_underline_thicknessT1_BLEND_UNDERLINE_THICKNESS#define t1_blend_italic_angleT1_BLEND_ITALIC_ANGLE#define t1_blend_blue_valuesT1_BLEND_BLUE_VALUES#define t1_blend_other_bluesT1_BLEND_OTHER_BLUES#define t1_blend_standard_widthsT1_BLEND_STANDARD_WIDTH#define t1_blend_standard_heightT1_BLEND_STANDARD_HEIGHT#define t1_blend_stem_snap_widthsT1_BLEND_STEM_SNAP_WIDTHS#define t1_blend_stem_snap_heightsT1_BLEND_STEM_SNAP_HEIGHTS#define t1_blend_blue_scaleT1_BLEND_BLUE_SCALE#define t1_blend_blue_shiftT1_BLEND_BLUE_SHIFT#define t1_blend_family_bluesT1_BLEND_FAMILY_BLUES#define t1_blend_family_other_bluesT1_BLEND_FAMILY_OTHER_BLUES#define t1_blend_force_boldT1_BLEND_FORCE_BOLD#define t1_blend_max                  T1_BLEND_MAX

A set of flags used to indicate which fields are present in a given blend dictionary (font info or private). Used to support Multiple Masters fonts.

values

T1_EncodingType¶

Defined in FT_TYPE1_TABLES_H (freetype/t1tables.h).

typedefenum  T1_EncodingType_  {T1_ENCODING_TYPE_NONE = 0,T1_ENCODING_TYPE_ARRAY,T1_ENCODING_TYPE_STANDARD,T1_ENCODING_TYPE_ISOLATIN1,T1_ENCODING_TYPE_EXPERT  }T1_EncodingType;

An enumeration describing the ‘Encoding’ entry in a Type 1 dictionary.

values

since

2.4.8

PS_Dict_Keys¶

Defined in FT_TYPE1_TABLES_H (freetype/t1tables.h).

typedefenum  PS_Dict_Keys_  {    /* conventionally in the font dictionary */PS_DICT_FONT_TYPE,              /*FT_Byte         */PS_DICT_FONT_MATRIX,            /*FT_Fixed        */PS_DICT_FONT_BBOX,              /*FT_Fixed        */PS_DICT_PAINT_TYPE,             /*FT_Byte         */PS_DICT_FONT_NAME,              /*FT_String*      */PS_DICT_UNIQUE_ID,              /*FT_Int          */PS_DICT_NUM_CHAR_STRINGS,       /*FT_Int          */PS_DICT_CHAR_STRING_KEY,        /*FT_String*      */PS_DICT_CHAR_STRING,            /*FT_String*      */PS_DICT_ENCODING_TYPE,          /*T1_EncodingType */PS_DICT_ENCODING_ENTRY,         /*FT_String*      */    /* conventionally in the font Private dictionary */PS_DICT_NUM_SUBRS,              /*FT_Int     */PS_DICT_SUBR,                   /*FT_String* */PS_DICT_STD_HW,                 /*FT_UShort  */PS_DICT_STD_VW,                 /*FT_UShort  */PS_DICT_NUM_BLUE_VALUES,        /*FT_Byte    */PS_DICT_BLUE_VALUE,             /*FT_Short   */PS_DICT_BLUE_FUZZ,              /*FT_Int     */PS_DICT_NUM_OTHER_BLUES,        /*FT_Byte    */PS_DICT_OTHER_BLUE,             /*FT_Short   */PS_DICT_NUM_FAMILY_BLUES,       /*FT_Byte    */PS_DICT_FAMILY_BLUE,            /*FT_Short   */PS_DICT_NUM_FAMILY_OTHER_BLUES, /*FT_Byte    */PS_DICT_FAMILY_OTHER_BLUE,      /*FT_Short   */PS_DICT_BLUE_SCALE,             /*FT_Fixed   */PS_DICT_BLUE_SHIFT,             /*FT_Int     */PS_DICT_NUM_STEM_SNAP_H,        /*FT_Byte    */PS_DICT_STEM_SNAP_H,            /*FT_Short   */PS_DICT_NUM_STEM_SNAP_V,        /*FT_Byte    */PS_DICT_STEM_SNAP_V,            /*FT_Short   */PS_DICT_FORCE_BOLD,             /*FT_Bool    */PS_DICT_RND_STEM_UP,            /*FT_Bool    */PS_DICT_MIN_FEATURE,            /*FT_Short   */PS_DICT_LEN_IV,                 /*FT_Int     */PS_DICT_PASSWORD,               /*FT_Long    */PS_DICT_LANGUAGE_GROUP,         /*FT_Long    */    /* conventionally in the font FontInfo dictionary */PS_DICT_VERSION,                /*FT_String* */PS_DICT_NOTICE,                 /*FT_String* */PS_DICT_FULL_NAME,              /*FT_String* */PS_DICT_FAMILY_NAME,            /*FT_String* */PS_DICT_WEIGHT,                 /*FT_String* */PS_DICT_IS_FIXED_PITCH,         /*FT_Bool    */PS_DICT_UNDERLINE_POSITION,     /*FT_Short   */PS_DICT_UNDERLINE_THICKNESS,    /*FT_UShort  */PS_DICT_FS_TYPE,                /*FT_UShort  */PS_DICT_ITALIC_ANGLE,           /*FT_Long    */    PS_DICT_MAX =PS_DICT_ITALIC_ANGLE  }PS_Dict_Keys;

An enumeration used in calls toFT_Get_PS_Font_Value to identify the Type 1 dictionary entry to retrieve.

values

since

2.4.8

T1_FontInfo¶

Defined in FT_TYPE1_TABLES_H (freetype/t1tables.h).

typedefPS_FontInfoRecT1_FontInfo;

This type is equivalent toPS_FontInfoRec. It is deprecated but kept to maintain source compatibility between various versions of FreeType.

T1_Private¶

Defined in FT_TYPE1_TABLES_H (freetype/t1tables.h).

typedefPS_PrivateRecT1_Private;

This type is equivalent toPS_PrivateRec. It is deprecated but kept to maintain source compatibility between various versions of FreeType.

CID_FontDict¶

Defined in FT_TYPE1_TABLES_H (freetype/t1tables.h).

typedefCID_FaceDictRecCID_FontDict;

This type is equivalent toCID_FaceDictRec. It is deprecated but kept to maintain source compatibility between various versions of FreeType.

CID_Info¶

Defined in FT_TYPE1_TABLES_H (freetype/t1tables.h).

typedefCID_FaceInfoRecCID_Info;

This type is equivalent toCID_FaceInfoRec. It is deprecated but kept to maintain source compatibility between various versions of FreeType.