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/**************************************************************************** * * t1tables.h * * Basic Type 1/Type 2 tables definitions and interface (specification * only). * * Copyright (C) 1996-2020 by * David Turner, Robert Wilhelm, and Werner Lemberg. * * This file is part of the FreeType project, and may only be used, * modified, and distributed under the terms of the FreeType project * license, LICENSE.TXT. By continuing to use, modify, or distribute * this file you indicate that you have read the license and * understand and accept it fully. * */ #ifndef T1TABLES_H_ #define T1TABLES_H_ #include <freetype/freetype.h> #ifdef FREETYPE_H #error "freetype.h of FreeType 1 has been loaded!" #error "Please fix the directory search order for header files" #error "so that freetype.h of FreeType 2 is found first." #endif FT_BEGIN_HEADER /************************************************************************** * * @section: * type1_tables * * @title: * Type 1 Tables * * @abstract: * Type~1-specific font tables. * * @description: * This section contains the definition of Type~1-specific tables, * including structures related to other PostScript font formats. * * @order: * PS_FontInfoRec * PS_FontInfo * PS_PrivateRec * PS_Private * * CID_FaceDictRec * CID_FaceDict * CID_FaceInfoRec * CID_FaceInfo * * FT_Has_PS_Glyph_Names * FT_Get_PS_Font_Info * FT_Get_PS_Font_Private * FT_Get_PS_Font_Value * * T1_Blend_Flags * T1_EncodingType * PS_Dict_Keys * */ /* Note that we separate font data in PS_FontInfoRec and PS_PrivateRec */ /* structures in order to support Multiple Master fonts. */ /************************************************************************** * * @struct: * PS_FontInfoRec * * @description: * 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. */ 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; /************************************************************************** * * @struct: * PS_FontInfo * * @description: * A handle to a @PS_FontInfoRec structure. */ typedef struct PS_FontInfoRec_* PS_FontInfo; /************************************************************************** * * @struct: * T1_FontInfo * * @description: * This type is equivalent to @PS_FontInfoRec. It is deprecated but kept * to maintain source compatibility between various versions of FreeType. */ typedef PS_FontInfoRec T1_FontInfo; /************************************************************************** * * @struct: * PS_PrivateRec * * @description: * 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. */ 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; /************************************************************************** * * @struct: * PS_Private * * @description: * A handle to a @PS_PrivateRec structure. */ typedef struct PS_PrivateRec_* PS_Private; /************************************************************************** * * @struct: * T1_Private * * @description: * This type is equivalent to @PS_PrivateRec. It is deprecated but kept * to maintain source compatibility between various versions of FreeType. */ typedef PS_PrivateRec T1_Private; /************************************************************************** * * @enum: * T1_Blend_Flags * * @description: * 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 :: */ 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 /* */ /* maximum number of Multiple Masters designs, as defined in the spec */ #define T1_MAX_MM_DESIGNS 16 /* maximum number of Multiple Masters axes, as defined in the spec */ #define T1_MAX_MM_AXIS 4 /* maximum number of elements in a design map */ #define T1_MAX_MM_MAP_POINTS 20 /* this structure is used to store the BlendDesignMap entry for an axis */ typedef struct PS_DesignMap_ { FT_Byte num_points; FT_Long* design_points; FT_Fixed* blend_points; } PS_DesignMapRec, *PS_DesignMap; /* backward compatible definition */ typedef PS_DesignMapRec T1_DesignMap; typedef struct PS_BlendRec_ { FT_UInt num_designs; FT_UInt num_axis; FT_String* axis_names[T1_MAX_MM_AXIS]; FT_Fixed* design_pos[T1_MAX_MM_DESIGNS]; PS_DesignMapRec design_map[T1_MAX_MM_AXIS]; FT_Fixed* weight_vector; FT_Fixed* default_weight_vector; PS_FontInfo font_infos[T1_MAX_MM_DESIGNS + 1]; PS_Private privates [T1_MAX_MM_DESIGNS + 1]; FT_ULong blend_bitflags; FT_BBox* bboxes [T1_MAX_MM_DESIGNS + 1]; /* since 2.3.0 */ /* undocumented, optional: the default design instance; */ /* corresponds to default_weight_vector -- */ /* num_default_design_vector == 0 means it is not present */ /* in the font and associated metrics files */ FT_UInt default_design_vector[T1_MAX_MM_DESIGNS]; FT_UInt num_default_design_vector; } PS_BlendRec, *PS_Blend; /* backward compatible definition */ typedef PS_BlendRec T1_Blend; /************************************************************************** * * @struct: * CID_FaceDictRec * * @description: * 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. */ 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; /************************************************************************** * * @struct: * CID_FaceDict * * @description: * A handle to a @CID_FaceDictRec structure. */ typedef struct CID_FaceDictRec_* CID_FaceDict; /************************************************************************** * * @struct: * CID_FontDict * * @description: * This type is equivalent to @CID_FaceDictRec. It is deprecated but * kept to maintain source compatibility between various versions of * FreeType. */ typedef CID_FaceDictRec CID_FontDict; /************************************************************************** * * @struct: * CID_FaceInfoRec * * @description: * A structure used to represent CID Face information. */ 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; /************************************************************************** * * @struct: * CID_FaceInfo * * @description: * A handle to a @CID_FaceInfoRec structure. */ typedef struct CID_FaceInfoRec_* CID_FaceInfo; /************************************************************************** * * @struct: * CID_Info * * @description: * This type is equivalent to @CID_FaceInfoRec. It is deprecated but kept * to maintain source compatibility between various versions of FreeType. */ typedef CID_FaceInfoRec CID_Info; /************************************************************************** * * @function: * FT_Has_PS_Glyph_Names * * @description: * 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_EXPORT( FT_Int ) FT_Has_PS_Glyph_Names( FT_Face face ); /************************************************************************** * * @function: * FT_Get_PS_Font_Info * * @description: * 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_EXPORT( FT_Error ) FT_Get_PS_Font_Info( FT_Face face, PS_FontInfo afont_info ); /************************************************************************** * * @function: * FT_Get_PS_Font_Private * * @description: * 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_EXPORT( FT_Error ) FT_Get_PS_Font_Private( FT_Face face, PS_Private afont_private ); /************************************************************************** * * @enum: * T1_EncodingType * * @description: * 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 */ 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; /************************************************************************** * * @enum: * PS_Dict_Keys * * @description: * 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 */ 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; /************************************************************************** * * @function: * FT_Get_PS_Font_Value * * @description: * 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 * */ 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 ); /* */ FT_END_HEADER #endif /* T1TABLES_H_ */ /* END */
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