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).
typedef struct 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).
typedef struct PS_FontInfoRec_* PS_FontInfo;
A handle to a PS_FontInfoRec structure.
PS_PrivateRec¶
Defined in FT_TYPE1_TABLES_H (freetype/t1tables.h).
typedef struct 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).
typedef struct PS_PrivateRec_* PS_Private;
A handle to a PS_PrivateRec structure.
CID_FaceDictRec¶
Defined in FT_TYPE1_TABLES_H (freetype/t1tables.h).
typedef struct 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_Int 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 that CID_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).
typedef struct CID_FaceDictRec_* CID_FaceDict;
A handle to a CID_FaceDictRec structure.
CID_FaceInfoRec¶
Defined in FT_TYPE1_TABLES_H (freetype/t1tables.h).
typedef struct 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_Int fd_bytes;
FT_Int gd_bytes;
FT_ULong cid_count;
FT_Int 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).
typedef struct CID_FaceInfoRec_* CID_FaceInfo;
A handle to a CID_FaceInfoRec structure.
FT_Has_PS_Glyph_Names¶
Defined in FT_TYPE1_TABLES_H (freetype/t1tables.h).
Return true if a given face provides reliable PostScript glyph names. This is similar to using the FT_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 by FT_Get_Glyph_Name are reliable.
input
| face |
face handle |
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 the PS_FontInfoRec structure corresponding to a given PostScript font.
input
| face |
PostScript face handle. |
output
| afont_info |
Output font info structure pointer. |
return
FreeType error code. 0 means success.
note
String pointers within the PS_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 by NULL pointers.
If the font's format is not PostScript-based, this function will return the FT_Err_Invalid_Argument error code.
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 the PS_PrivateRec structure corresponding to a given PostScript font.
input
| face |
PostScript face handle. |
output
| afont_private |
Output private dictionary structure pointer. |
return
FreeType error code. 0 means success.
note
The string pointers within the PS_PrivateRec structure are owned by the face and don't need to be freed by the caller.
If the font's format is not PostScript-based, this function returns the FT_Err_Invalid_Argument error code.
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
| face |
PostScript face handle. |
| key |
An enumeration value representing the dictionary key to retrieve. |
| idx |
For array values, this specifies the index to be returned. |
| value |
A pointer to memory into which to write the value. |
| valen_len |
The size, in bytes, of the memory supplied for the value. |
output
| value |
The value matching the above key, if it exists. |
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 either value is NULL or value_len is too small, just the required memory size for the requested entry is returned.
The idx 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 the FT_Err_Invalid_Argument error code.
since
2.4.8
T1_Blend_Flags¶
Defined in FT_TYPE1_TABLES_H (freetype/t1tables.h).
typedef enum 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_position T1_BLEND_UNDERLINE_POSITION
#define t1_blend_underline_thickness T1_BLEND_UNDERLINE_THICKNESS
#define t1_blend_italic_angle T1_BLEND_ITALIC_ANGLE
#define t1_blend_blue_values T1_BLEND_BLUE_VALUES
#define t1_blend_other_blues T1_BLEND_OTHER_BLUES
#define t1_blend_standard_widths T1_BLEND_STANDARD_WIDTH
#define t1_blend_standard_height T1_BLEND_STANDARD_HEIGHT
#define t1_blend_stem_snap_widths T1_BLEND_STEM_SNAP_WIDTHS
#define t1_blend_stem_snap_heights T1_BLEND_STEM_SNAP_HEIGHTS
#define t1_blend_blue_scale T1_BLEND_BLUE_SCALE
#define t1_blend_blue_shift T1_BLEND_BLUE_SHIFT
#define t1_blend_family_blues T1_BLEND_FAMILY_BLUES
#define t1_blend_family_other_blues T1_BLEND_FAMILY_OTHER_BLUES
#define t1_blend_force_bold T1_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_BLEND_UNDERLINE_POSITION | |
| T1_BLEND_UNDERLINE_THICKNESS | |
| T1_BLEND_ITALIC_ANGLE | |
| 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_EncodingType¶
Defined in FT_TYPE1_TABLES_H (freetype/t1tables.h).
typedef enum 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
| T1_ENCODING_TYPE_NONE | |
| T1_ENCODING_TYPE_ARRAY | |
| T1_ENCODING_TYPE_STANDARD | |
| T1_ENCODING_TYPE_ISOLATIN1 | |
| T1_ENCODING_TYPE_EXPERT |
since
2.4.8
PS_Dict_Keys¶
Defined in FT_TYPE1_TABLES_H (freetype/t1tables.h).
typedef enum 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 to FT_Get_PS_Font_Value to identify the Type 1 dictionary entry to retrieve.
values
| PS_DICT_FONT_TYPE | |
| PS_DICT_FONT_MATRIX | |
| PS_DICT_FONT_BBOX | |
| PS_DICT_PAINT_TYPE | |
| PS_DICT_FONT_NAME | |
| PS_DICT_UNIQUE_ID | |
| PS_DICT_NUM_CHAR_STRINGS | |
| PS_DICT_CHAR_STRING_KEY | |
| PS_DICT_CHAR_STRING | |
| PS_DICT_ENCODING_TYPE | |
| PS_DICT_ENCODING_ENTRY | |
| PS_DICT_NUM_SUBRS | |
| PS_DICT_SUBR | |
| PS_DICT_STD_HW | |
| PS_DICT_STD_VW | |
| PS_DICT_NUM_BLUE_VALUES | |
| PS_DICT_BLUE_VALUE | |
| PS_DICT_BLUE_FUZZ | |
| PS_DICT_NUM_OTHER_BLUES | |
| PS_DICT_OTHER_BLUE | |
| PS_DICT_NUM_FAMILY_BLUES | |
| PS_DICT_FAMILY_BLUE | |
| PS_DICT_NUM_FAMILY_OTHER_BLUES | |
| PS_DICT_FAMILY_OTHER_BLUE | |
| PS_DICT_BLUE_SCALE | |
| PS_DICT_BLUE_SHIFT | |
| PS_DICT_NUM_STEM_SNAP_H | |
| PS_DICT_STEM_SNAP_H | |
| PS_DICT_NUM_STEM_SNAP_V | |
| PS_DICT_STEM_SNAP_V | |
| PS_DICT_FORCE_BOLD | |
| PS_DICT_RND_STEM_UP | |
| PS_DICT_MIN_FEATURE | |
| PS_DICT_LEN_IV | |
| PS_DICT_PASSWORD | |
| PS_DICT_LANGUAGE_GROUP | |
| PS_DICT_VERSION | |
| PS_DICT_NOTICE | |
| PS_DICT_FULL_NAME | |
| PS_DICT_FAMILY_NAME | |
| PS_DICT_WEIGHT | |
| PS_DICT_IS_FIXED_PITCH | |
| PS_DICT_UNDERLINE_POSITION | |
| PS_DICT_UNDERLINE_THICKNESS | |
| PS_DICT_FS_TYPE | |
| PS_DICT_ITALIC_ANGLE |
since
2.4.8
T1_FontInfo¶
Defined in FT_TYPE1_TABLES_H (freetype/t1tables.h).
typedef PS_FontInfoRec T1_FontInfo;
This type is equivalent to PS_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).
typedef PS_PrivateRec T1_Private;
This type is equivalent to PS_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).
typedef CID_FaceDictRec CID_FontDict;
This type is equivalent to CID_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).
typedef CID_FaceInfoRec CID_Info;
This type is equivalent to CID_FaceInfoRec. It is deprecated but kept to maintain source compatibility between various versions of FreeType.