| /**************************************************************************** |
| * |
| * tttypes.h |
| * |
| * Basic SFNT/TrueType type definitions and interface (specification |
| * only). |
| * |
| * Copyright (C) 1996-2022 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 TTTYPES_H_ |
| #define TTTYPES_H_ |
| |
| |
| #include <freetype/tttables.h> |
| #include <freetype/internal/ftobjs.h> |
| #include <freetype/ftcolor.h> |
| |
| #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT |
| #include <freetype/ftmm.h> |
| #endif |
| |
| |
| FT_BEGIN_HEADER |
| |
| |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /*** ***/ |
| /*** ***/ |
| /*** REQUIRED TRUETYPE/OPENTYPE TABLES DEFINITIONS ***/ |
| /*** ***/ |
| /*** ***/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| |
| |
| /************************************************************************** |
| * |
| * @struct: |
| * TTC_HeaderRec |
| * |
| * @description: |
| * TrueType collection header. This table contains the offsets of the |
| * font headers of each distinct TrueType face in the file. |
| * |
| * @fields: |
| * tag :: |
| * Must be 'ttc~' to indicate a TrueType collection. |
| * |
| * version :: |
| * The version number. |
| * |
| * count :: |
| * The number of faces in the collection. The specification says this |
| * should be an unsigned long, but we use a signed long since we need |
| * the value -1 for specific purposes. |
| * |
| * offsets :: |
| * The offsets of the font headers, one per face. |
| */ |
| typedef struct TTC_HeaderRec_ |
| { |
| FT_ULong tag; |
| FT_Fixed version; |
| FT_Long count; |
| FT_ULong* offsets; |
| |
| } TTC_HeaderRec; |
| |
| |
| /************************************************************************** |
| * |
| * @struct: |
| * SFNT_HeaderRec |
| * |
| * @description: |
| * SFNT file format header. |
| * |
| * @fields: |
| * format_tag :: |
| * The font format tag. |
| * |
| * num_tables :: |
| * The number of tables in file. |
| * |
| * search_range :: |
| * Must be '16 * (max power of 2 <= num_tables)'. |
| * |
| * entry_selector :: |
| * Must be log2 of 'search_range / 16'. |
| * |
| * range_shift :: |
| * Must be 'num_tables * 16 - search_range'. |
| */ |
| typedef struct SFNT_HeaderRec_ |
| { |
| FT_ULong format_tag; |
| FT_UShort num_tables; |
| FT_UShort search_range; |
| FT_UShort entry_selector; |
| FT_UShort range_shift; |
| |
| FT_ULong offset; /* not in file */ |
| |
| } SFNT_HeaderRec, *SFNT_Header; |
| |
| |
| /************************************************************************** |
| * |
| * @struct: |
| * TT_TableRec |
| * |
| * @description: |
| * This structure describes a given table of a TrueType font. |
| * |
| * @fields: |
| * Tag :: |
| * A four-bytes tag describing the table. |
| * |
| * CheckSum :: |
| * The table checksum. This value can be ignored. |
| * |
| * Offset :: |
| * The offset of the table from the start of the TrueType font in its |
| * resource. |
| * |
| * Length :: |
| * The table length (in bytes). |
| */ |
| typedef struct TT_TableRec_ |
| { |
| FT_ULong Tag; /* table type */ |
| FT_ULong CheckSum; /* table checksum */ |
| FT_ULong Offset; /* table file offset */ |
| FT_ULong Length; /* table length */ |
| |
| } TT_TableRec, *TT_Table; |
| |
| |
| /************************************************************************** |
| * |
| * @struct: |
| * TT_LongMetricsRec |
| * |
| * @description: |
| * A structure modeling the long metrics of the 'hmtx' and 'vmtx' |
| * TrueType tables. The values are expressed in font units. |
| * |
| * @fields: |
| * advance :: |
| * The advance width or height for the glyph. |
| * |
| * bearing :: |
| * The left-side or top-side bearing for the glyph. |
| */ |
| typedef struct TT_LongMetricsRec_ |
| { |
| FT_UShort advance; |
| FT_Short bearing; |
| |
| } TT_LongMetricsRec, *TT_LongMetrics; |
| |
| |
| /************************************************************************** |
| * |
| * @type: |
| * TT_ShortMetrics |
| * |
| * @description: |
| * A simple type to model the short metrics of the 'hmtx' and 'vmtx' |
| * tables. |
| */ |
| typedef FT_Short TT_ShortMetrics; |
| |
| |
| /************************************************************************** |
| * |
| * @struct: |
| * TT_NameRec |
| * |
| * @description: |
| * A structure modeling TrueType name records. Name records are used to |
| * store important strings like family name, style name, copyright, |
| * etc. in _localized_ versions (i.e., language, encoding, etc). |
| * |
| * @fields: |
| * platformID :: |
| * The ID of the name's encoding platform. |
| * |
| * encodingID :: |
| * The platform-specific ID for the name's encoding. |
| * |
| * languageID :: |
| * The platform-specific ID for the name's language. |
| * |
| * nameID :: |
| * The ID specifying what kind of name this is. |
| * |
| * stringLength :: |
| * The length of the string in bytes. |
| * |
| * stringOffset :: |
| * The offset to the string in the 'name' table. |
| * |
| * string :: |
| * A pointer to the string's bytes. Note that these are usually UTF-16 |
| * encoded characters. |
| */ |
| typedef struct TT_NameRec_ |
| { |
| FT_UShort platformID; |
| FT_UShort encodingID; |
| FT_UShort languageID; |
| FT_UShort nameID; |
| FT_UShort stringLength; |
| FT_ULong stringOffset; |
| |
| /* this last field is not defined in the spec */ |
| /* but used by the FreeType engine */ |
| |
| FT_Byte* string; |
| |
| } TT_NameRec, *TT_Name; |
| |
| |
| /************************************************************************** |
| * |
| * @struct: |
| * TT_LangTagRec |
| * |
| * @description: |
| * A structure modeling language tag records in SFNT 'name' tables, |
| * introduced in OpenType version 1.6. |
| * |
| * @fields: |
| * stringLength :: |
| * The length of the string in bytes. |
| * |
| * stringOffset :: |
| * The offset to the string in the 'name' table. |
| * |
| * string :: |
| * A pointer to the string's bytes. Note that these are UTF-16BE |
| * encoded characters. |
| */ |
| typedef struct TT_LangTagRec_ |
| { |
| FT_UShort stringLength; |
| FT_ULong stringOffset; |
| |
| /* this last field is not defined in the spec */ |
| /* but used by the FreeType engine */ |
| |
| FT_Byte* string; |
| |
| } TT_LangTagRec, *TT_LangTag; |
| |
| |
| /************************************************************************** |
| * |
| * @struct: |
| * TT_NameTableRec |
| * |
| * @description: |
| * A structure modeling the TrueType name table. |
| * |
| * @fields: |
| * format :: |
| * The format of the name table. |
| * |
| * numNameRecords :: |
| * The number of names in table. |
| * |
| * storageOffset :: |
| * The offset of the name table in the 'name' TrueType table. |
| * |
| * names :: |
| * An array of name records. |
| * |
| * numLangTagRecords :: |
| * The number of language tags in table. |
| * |
| * langTags :: |
| * An array of language tag records. |
| * |
| * stream :: |
| * The file's input stream. |
| */ |
| typedef struct TT_NameTableRec_ |
| { |
| FT_UShort format; |
| FT_UInt numNameRecords; |
| FT_UInt storageOffset; |
| TT_NameRec* names; |
| FT_UInt numLangTagRecords; |
| TT_LangTagRec* langTags; |
| FT_Stream stream; |
| |
| } TT_NameTableRec, *TT_NameTable; |
| |
| |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /*** ***/ |
| /*** ***/ |
| /*** OPTIONAL TRUETYPE/OPENTYPE TABLES DEFINITIONS ***/ |
| /*** ***/ |
| /*** ***/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| |
| |
| /************************************************************************** |
| * |
| * @struct: |
| * TT_GaspRangeRec |
| * |
| * @description: |
| * A tiny structure used to model a gasp range according to the TrueType |
| * specification. |
| * |
| * @fields: |
| * maxPPEM :: |
| * The maximum ppem value to which `gaspFlag` applies. |
| * |
| * gaspFlag :: |
| * A flag describing the grid-fitting and anti-aliasing modes to be |
| * used. |
| */ |
| typedef struct TT_GaspRangeRec_ |
| { |
| FT_UShort maxPPEM; |
| FT_UShort gaspFlag; |
| |
| } TT_GaspRangeRec, *TT_GaspRange; |
| |
| |
| #define TT_GASP_GRIDFIT 0x01 |
| #define TT_GASP_DOGRAY 0x02 |
| |
| |
| /************************************************************************** |
| * |
| * @struct: |
| * TT_GaspRec |
| * |
| * @description: |
| * A structure modeling the TrueType 'gasp' table used to specify |
| * grid-fitting and anti-aliasing behaviour. |
| * |
| * @fields: |
| * version :: |
| * The version number. |
| * |
| * numRanges :: |
| * The number of gasp ranges in table. |
| * |
| * gaspRanges :: |
| * An array of gasp ranges. |
| */ |
| typedef struct TT_Gasp_ |
| { |
| FT_UShort version; |
| FT_UShort numRanges; |
| TT_GaspRange gaspRanges; |
| |
| } TT_GaspRec; |
| |
| |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /*** ***/ |
| /*** ***/ |
| /*** EMBEDDED BITMAPS SUPPORT ***/ |
| /*** ***/ |
| /*** ***/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| |
| |
| /************************************************************************** |
| * |
| * @struct: |
| * TT_SBit_MetricsRec |
| * |
| * @description: |
| * A structure used to hold the big metrics of a given glyph bitmap in a |
| * TrueType or OpenType font. These are usually found in the 'EBDT' |
| * (Microsoft) or 'bloc' (Apple) table. |
| * |
| * @fields: |
| * height :: |
| * The glyph height in pixels. |
| * |
| * width :: |
| * The glyph width in pixels. |
| * |
| * horiBearingX :: |
| * The horizontal left bearing. |
| * |
| * horiBearingY :: |
| * The horizontal top bearing. |
| * |
| * horiAdvance :: |
| * The horizontal advance. |
| * |
| * vertBearingX :: |
| * The vertical left bearing. |
| * |
| * vertBearingY :: |
| * The vertical top bearing. |
| * |
| * vertAdvance :: |
| * The vertical advance. |
| */ |
| typedef struct TT_SBit_MetricsRec_ |
| { |
| FT_UShort height; |
| FT_UShort width; |
| |
| FT_Short horiBearingX; |
| FT_Short horiBearingY; |
| FT_UShort horiAdvance; |
| |
| FT_Short vertBearingX; |
| FT_Short vertBearingY; |
| FT_UShort vertAdvance; |
| |
| } TT_SBit_MetricsRec, *TT_SBit_Metrics; |
| |
| |
| /************************************************************************** |
| * |
| * @struct: |
| * TT_SBit_SmallMetricsRec |
| * |
| * @description: |
| * A structure used to hold the small metrics of a given glyph bitmap in |
| * a TrueType or OpenType font. These are usually found in the 'EBDT' |
| * (Microsoft) or the 'bdat' (Apple) table. |
| * |
| * @fields: |
| * height :: |
| * The glyph height in pixels. |
| * |
| * width :: |
| * The glyph width in pixels. |
| * |
| * bearingX :: |
| * The left-side bearing. |
| * |
| * bearingY :: |
| * The top-side bearing. |
| * |
| * advance :: |
| * The advance width or height. |
| */ |
| typedef struct TT_SBit_Small_Metrics_ |
| { |
| FT_Byte height; |
| FT_Byte width; |
| |
| FT_Char bearingX; |
| FT_Char bearingY; |
| FT_Byte advance; |
| |
| } TT_SBit_SmallMetricsRec, *TT_SBit_SmallMetrics; |
| |
| |
| /************************************************************************** |
| * |
| * @struct: |
| * TT_SBit_LineMetricsRec |
| * |
| * @description: |
| * A structure used to describe the text line metrics of a given bitmap |
| * strike, for either a horizontal or vertical layout. |
| * |
| * @fields: |
| * ascender :: |
| * The ascender in pixels. |
| * |
| * descender :: |
| * The descender in pixels. |
| * |
| * max_width :: |
| * The maximum glyph width in pixels. |
| * |
| * caret_slope_enumerator :: |
| * Rise of the caret slope, typically set to 1 for non-italic fonts. |
| * |
| * caret_slope_denominator :: |
| * Rise of the caret slope, typically set to 0 for non-italic fonts. |
| * |
| * caret_offset :: |
| * Offset in pixels to move the caret for proper positioning. |
| * |
| * min_origin_SB :: |
| * Minimum of horiBearingX (resp. vertBearingY). |
| * min_advance_SB :: |
| * Minimum of |
| * |
| * horizontal advance - ( horiBearingX + width ) |
| * |
| * resp. |
| * |
| * vertical advance - ( vertBearingY + height ) |
| * |
| * max_before_BL :: |
| * Maximum of horiBearingY (resp. vertBearingY). |
| * |
| * min_after_BL :: |
| * Minimum of |
| * |
| * horiBearingY - height |
| * |
| * resp. |
| * |
| * vertBearingX - width |
| * |
| * pads :: |
| * Unused (to make the size of the record a multiple of 32 bits. |
| */ |
| typedef struct TT_SBit_LineMetricsRec_ |
| { |
| FT_Char ascender; |
| FT_Char descender; |
| FT_Byte max_width; |
| FT_Char caret_slope_numerator; |
| FT_Char caret_slope_denominator; |
| FT_Char caret_offset; |
| FT_Char min_origin_SB; |
| FT_Char min_advance_SB; |
| FT_Char max_before_BL; |
| FT_Char min_after_BL; |
| FT_Char pads[2]; |
| |
| } TT_SBit_LineMetricsRec, *TT_SBit_LineMetrics; |
| |
| |
| /************************************************************************** |
| * |
| * @struct: |
| * TT_SBit_RangeRec |
| * |
| * @description: |
| * A TrueType/OpenType subIndexTable as defined in the 'EBLC' (Microsoft) |
| * or 'bloc' (Apple) tables. |
| * |
| * @fields: |
| * first_glyph :: |
| * The first glyph index in the range. |
| * |
| * last_glyph :: |
| * The last glyph index in the range. |
| * |
| * index_format :: |
| * The format of index table. Valid values are 1 to 5. |
| * |
| * image_format :: |
| * The format of 'EBDT' image data. |
| * |
| * image_offset :: |
| * The offset to image data in 'EBDT'. |
| * |
| * image_size :: |
| * For index formats 2 and 5. This is the size in bytes of each glyph |
| * bitmap. |
| * |
| * big_metrics :: |
| * For index formats 2 and 5. This is the big metrics for each glyph |
| * bitmap. |
| * |
| * num_glyphs :: |
| * For index formats 4 and 5. This is the number of glyphs in the code |
| * array. |
| * |
| * glyph_offsets :: |
| * For index formats 1 and 3. |
| * |
| * glyph_codes :: |
| * For index formats 4 and 5. |
| * |
| * table_offset :: |
| * The offset of the index table in the 'EBLC' table. Only used during |
| * strike loading. |
| */ |
| typedef struct TT_SBit_RangeRec_ |
| { |
| FT_UShort first_glyph; |
| FT_UShort last_glyph; |
| |
| FT_UShort index_format; |
| FT_UShort image_format; |
| FT_ULong image_offset; |
| |
| FT_ULong image_size; |
| TT_SBit_MetricsRec metrics; |
| FT_ULong num_glyphs; |
| |
| FT_ULong* glyph_offsets; |
| FT_UShort* glyph_codes; |
| |
| FT_ULong table_offset; |
| |
| } TT_SBit_RangeRec, *TT_SBit_Range; |
| |
| |
| /************************************************************************** |
| * |
| * @struct: |
| * TT_SBit_StrikeRec |
| * |
| * @description: |
| * A structure used describe a given bitmap strike in the 'EBLC' |
| * (Microsoft) or 'bloc' (Apple) tables. |
| * |
| * @fields: |
| * num_index_ranges :: |
| * The number of index ranges. |
| * |
| * index_ranges :: |
| * An array of glyph index ranges. |
| * |
| * color_ref :: |
| * Unused. `color_ref` is put in for future enhancements, but these |
| * fields are already in use by other platforms (e.g. Newton). For |
| * details, please see |
| * |
| * https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6bloc.html |
| * |
| * hori :: |
| * The line metrics for horizontal layouts. |
| * |
| * vert :: |
| * The line metrics for vertical layouts. |
| * |
| * start_glyph :: |
| * The lowest glyph index for this strike. |
| * |
| * end_glyph :: |
| * The highest glyph index for this strike. |
| * |
| * x_ppem :: |
| * The number of horizontal pixels per EM. |
| * |
| * y_ppem :: |
| * The number of vertical pixels per EM. |
| * |
| * bit_depth :: |
| * The bit depth. Valid values are 1, 2, 4, and 8. |
| * |
| * flags :: |
| * Is this a vertical or horizontal strike? For details, please see |
| * |
| * https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6bloc.html |
| */ |
| typedef struct TT_SBit_StrikeRec_ |
| { |
| FT_Int num_ranges; |
| TT_SBit_Range sbit_ranges; |
| FT_ULong ranges_offset; |
| |
| FT_ULong color_ref; |
| |
| TT_SBit_LineMetricsRec hori; |
| TT_SBit_LineMetricsRec vert; |
| |
| FT_UShort start_glyph; |
| FT_UShort end_glyph; |
| |
| FT_Byte x_ppem; |
| FT_Byte y_ppem; |
| |
| FT_Byte bit_depth; |
| FT_Char flags; |
| |
| } TT_SBit_StrikeRec, *TT_SBit_Strike; |
| |
| |
| /************************************************************************** |
| * |
| * @struct: |
| * TT_SBit_ComponentRec |
| * |
| * @description: |
| * A simple structure to describe a compound sbit element. |
| * |
| * @fields: |
| * glyph_code :: |
| * The element's glyph index. |
| * |
| * x_offset :: |
| * The element's left bearing. |
| * |
| * y_offset :: |
| * The element's top bearing. |
| */ |
| typedef struct TT_SBit_ComponentRec_ |
| { |
| FT_UShort glyph_code; |
| FT_Char x_offset; |
| FT_Char y_offset; |
| |
| } TT_SBit_ComponentRec, *TT_SBit_Component; |
| |
| |
| /************************************************************************** |
| * |
| * @struct: |
| * TT_SBit_ScaleRec |
| * |
| * @description: |
| * A structure used describe a given bitmap scaling table, as defined in |
| * the 'EBSC' table. |
| * |
| * @fields: |
| * hori :: |
| * The horizontal line metrics. |
| * |
| * vert :: |
| * The vertical line metrics. |
| * |
| * x_ppem :: |
| * The number of horizontal pixels per EM. |
| * |
| * y_ppem :: |
| * The number of vertical pixels per EM. |
| * |
| * x_ppem_substitute :: |
| * Substitution x_ppem value. |
| * |
| * y_ppem_substitute :: |
| * Substitution y_ppem value. |
| */ |
| typedef struct TT_SBit_ScaleRec_ |
| { |
| TT_SBit_LineMetricsRec hori; |
| TT_SBit_LineMetricsRec vert; |
| |
| FT_Byte x_ppem; |
| FT_Byte y_ppem; |
| |
| FT_Byte x_ppem_substitute; |
| FT_Byte y_ppem_substitute; |
| |
| } TT_SBit_ScaleRec, *TT_SBit_Scale; |
| |
| |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /*** ***/ |
| /*** ***/ |
| /*** POSTSCRIPT GLYPH NAMES SUPPORT ***/ |
| /*** ***/ |
| /*** ***/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| |
| |
| /************************************************************************** |
| * |
| * @struct: |
| * TT_Post_20Rec |
| * |
| * @description: |
| * Postscript names sub-table, format 2.0. Stores the PS name of each |
| * glyph in the font face. |
| * |
| * @fields: |
| * num_glyphs :: |
| * The number of named glyphs in the table. |
| * |
| * num_names :: |
| * The number of PS names stored in the table. |
| * |
| * glyph_indices :: |
| * The indices of the glyphs in the names arrays. |
| * |
| * glyph_names :: |
| * The PS names not in Mac Encoding. |
| */ |
| typedef struct TT_Post_20Rec_ |
| { |
| FT_UShort num_glyphs; |
| FT_UShort num_names; |
| FT_UShort* glyph_indices; |
| FT_Char** glyph_names; |
| |
| } TT_Post_20Rec, *TT_Post_20; |
| |
| |
| /************************************************************************** |
| * |
| * @struct: |
| * TT_Post_25Rec |
| * |
| * @description: |
| * Postscript names sub-table, format 2.5. Stores the PS name of each |
| * glyph in the font face. |
| * |
| * @fields: |
| * num_glyphs :: |
| * The number of glyphs in the table. |
| * |
| * offsets :: |
| * An array of signed offsets in a normal Mac Postscript name encoding. |
| */ |
| typedef struct TT_Post_25_ |
| { |
| FT_UShort num_glyphs; |
| FT_Char* offsets; |
| |
| } TT_Post_25Rec, *TT_Post_25; |
| |
| |
| /************************************************************************** |
| * |
| * @struct: |
| * TT_Post_NamesRec |
| * |
| * @description: |
| * Postscript names table, either format 2.0 or 2.5. |
| * |
| * @fields: |
| * loaded :: |
| * A flag to indicate whether the PS names are loaded. |
| * |
| * format_20 :: |
| * The sub-table used for format 2.0. |
| * |
| * format_25 :: |
| * The sub-table used for format 2.5. |
| */ |
| typedef struct TT_Post_NamesRec_ |
| { |
| FT_Bool loaded; |
| |
| union |
| { |
| TT_Post_20Rec format_20; |
| TT_Post_25Rec format_25; |
| |
| } names; |
| |
| } TT_Post_NamesRec, *TT_Post_Names; |
| |
| |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /*** ***/ |
| /*** ***/ |
| /*** GX VARIATION TABLE SUPPORT ***/ |
| /*** ***/ |
| /*** ***/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| |
| |
| #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT |
| typedef struct GX_BlendRec_ *GX_Blend; |
| #endif |
| |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /*** ***/ |
| /*** ***/ |
| /*** EMBEDDED BDF PROPERTIES TABLE SUPPORT ***/ |
| /*** ***/ |
| /*** ***/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| |
| /* |
| * These types are used to support a `BDF ' table that isn't part of the |
| * official TrueType specification. It is mainly used in SFNT-based bitmap |
| * fonts that were generated from a set of BDF fonts. |
| * |
| * The format of the table is as follows. |
| * |
| * USHORT version `BDF ' table version number, should be 0x0001. USHORT |
| * strikeCount Number of strikes (bitmap sizes) in this table. ULONG |
| * stringTable Offset (from start of BDF table) to string |
| * table. |
| * |
| * This is followed by an array of `strikeCount' descriptors, having the |
| * following format. |
| * |
| * USHORT ppem Vertical pixels per EM for this strike. USHORT numItems |
| * Number of items for this strike (properties and |
| * atoms). Maximum is 255. |
| * |
| * This array in turn is followed by `strikeCount' value sets. Each `value |
| * set' is an array of `numItems' items with the following format. |
| * |
| * ULONG item_name Offset in string table to item name. |
| * USHORT item_type The item type. Possible values are |
| * 0 => string (e.g., COMMENT) |
| * 1 => atom (e.g., FONT or even SIZE) |
| * 2 => int32 |
| * 3 => uint32 |
| * 0x10 => A flag to indicate a properties. This |
| * is ORed with the above values. |
| * ULONG item_value For strings => Offset into string table without |
| * the corresponding double quotes. |
| * For atoms => Offset into string table. |
| * For integers => Direct value. |
| * |
| * All strings in the string table consist of bytes and are |
| * zero-terminated. |
| * |
| */ |
| |
| #ifdef TT_CONFIG_OPTION_BDF |
| |
| typedef struct TT_BDFRec_ |
| { |
| FT_Byte* table; |
| FT_Byte* table_end; |
| FT_Byte* strings; |
| FT_ULong strings_size; |
| FT_UInt num_strikes; |
| FT_Bool loaded; |
| |
| } TT_BDFRec, *TT_BDF; |
| |
| #endif /* TT_CONFIG_OPTION_BDF */ |
| |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /*** ***/ |
| /*** ***/ |
| /*** ORIGINAL TT_FACE CLASS DEFINITION ***/ |
| /*** ***/ |
| /*** ***/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| |
| |
| /************************************************************************** |
| * |
| * This structure/class is defined here because it is common to the |
| * following formats: TTF, OpenType-TT, and OpenType-CFF. |
| * |
| * Note, however, that the classes TT_Size and TT_GlyphSlot are not shared |
| * between font drivers, and are thus defined in `ttobjs.h`. |
| * |
| */ |
| |
| |
| /************************************************************************** |
| * |
| * @type: |
| * TT_Face |
| * |
| * @description: |
| * A handle to a TrueType face/font object. A TT_Face encapsulates the |
| * resolution and scaling independent parts of a TrueType font resource. |
| * |
| * @note: |
| * The TT_Face structure is also used as a 'parent class' for the |
| * OpenType-CFF class (T2_Face). |
| */ |
| typedef struct TT_FaceRec_* TT_Face; |
| |
| |
| /* a function type used for the truetype bytecode interpreter hooks */ |
| typedef FT_Error |
| (*TT_Interpreter)( void* exec_context ); |
| |
| /* forward declaration */ |
| typedef struct TT_LoaderRec_* TT_Loader; |
| |
| |
| /************************************************************************** |
| * |
| * @functype: |
| * TT_Loader_GotoTableFunc |
| * |
| * @description: |
| * Seeks a stream to the start of a given TrueType table. |
| * |
| * @input: |
| * face :: |
| * A handle to the target face object. |
| * |
| * tag :: |
| * A 4-byte tag used to name the table. |
| * |
| * stream :: |
| * The input stream. |
| * |
| * @output: |
| * length :: |
| * The length of the table in bytes. Set to 0 if not needed. |
| * |
| * @return: |
| * FreeType error code. 0 means success. |
| * |
| * @note: |
| * The stream cursor must be at the font file's origin. |
| */ |
| typedef FT_Error |
| (*TT_Loader_GotoTableFunc)( TT_Face face, |
| FT_ULong tag, |
| FT_Stream stream, |
| FT_ULong* length ); |
| |
| |
| /************************************************************************** |
| * |
| * @functype: |
| * TT_Loader_StartGlyphFunc |
| * |
| * @description: |
| * Seeks a stream to the start of a given glyph element, and opens a |
| * frame for it. |
| * |
| * @input: |
| * loader :: |
| * The current TrueType glyph loader object. |
| * |
| * glyph index :: The index of the glyph to access. |
| * |
| * offset :: |
| * The offset of the glyph according to the 'locations' table. |
| * |
| * byte_count :: |
| * The size of the frame in bytes. |
| * |
| * @return: |
| * FreeType error code. 0 means success. |
| * |
| * @note: |
| * This function is normally equivalent to FT_STREAM_SEEK(offset) |
| * followed by FT_FRAME_ENTER(byte_count) with the loader's stream, but |
| * alternative formats (e.g. compressed ones) might use something |
| * different. |
| */ |
| typedef FT_Error |
| (*TT_Loader_StartGlyphFunc)( TT_Loader loader, |
| FT_UInt glyph_index, |
| FT_ULong offset, |
| FT_UInt byte_count ); |
| |
| |
| /************************************************************************** |
| * |
| * @functype: |
| * TT_Loader_ReadGlyphFunc |
| * |
| * @description: |
| * Reads one glyph element (its header, a simple glyph, or a composite) |
| * from the loader's current stream frame. |
| * |
| * @input: |
| * loader :: |
| * The current TrueType glyph loader object. |
| * |
| * @return: |
| * FreeType error code. 0 means success. |
| */ |
| typedef FT_Error |
| (*TT_Loader_ReadGlyphFunc)( TT_Loader loader ); |
| |
| |
| /************************************************************************** |
| * |
| * @functype: |
| * TT_Loader_EndGlyphFunc |
| * |
| * @description: |
| * Closes the current loader stream frame for the glyph. |
| * |
| * @input: |
| * loader :: |
| * The current TrueType glyph loader object. |
| */ |
| typedef void |
| (*TT_Loader_EndGlyphFunc)( TT_Loader loader ); |
| |
| |
| typedef enum TT_SbitTableType_ |
| { |
| TT_SBIT_TABLE_TYPE_NONE = 0, |
| TT_SBIT_TABLE_TYPE_EBLC, /* `EBLC' (Microsoft), */ |
| /* `bloc' (Apple) */ |
| TT_SBIT_TABLE_TYPE_CBLC, /* `CBLC' (Google) */ |
| TT_SBIT_TABLE_TYPE_SBIX, /* `sbix' (Apple) */ |
| |
| /* do not remove */ |
| TT_SBIT_TABLE_TYPE_MAX |
| |
| } TT_SbitTableType; |
| |
| |
| /* OpenType 1.8 brings new tables for variation font support; */ |
| /* to make the old MM and GX fonts still work we need to check */ |
| /* the presence (and validity) of the functionality provided */ |
| /* by those tables. The following flag macros are for the */ |
| /* field `variation_support'. */ |
| /* */ |
| /* Note that `fvar' gets checked immediately at font loading, */ |
| /* while the other features are only loaded if MM support is */ |
| /* actually requested. */ |
| |
| /* FVAR */ |
| #define TT_FACE_FLAG_VAR_FVAR ( 1 << 0 ) |
| |
| /* HVAR */ |
| #define TT_FACE_FLAG_VAR_HADVANCE ( 1 << 1 ) |
| #define TT_FACE_FLAG_VAR_LSB ( 1 << 2 ) |
| #define TT_FACE_FLAG_VAR_RSB ( 1 << 3 ) |
| |
| /* VVAR */ |
| #define TT_FACE_FLAG_VAR_VADVANCE ( 1 << 4 ) |
| #define TT_FACE_FLAG_VAR_TSB ( 1 << 5 ) |
| #define TT_FACE_FLAG_VAR_BSB ( 1 << 6 ) |
| #define TT_FACE_FLAG_VAR_VORG ( 1 << 7 ) |
| |
| /* MVAR */ |
| #define TT_FACE_FLAG_VAR_MVAR ( 1 << 8 ) |
| |
| |
| /************************************************************************** |
| * |
| * TrueType Face Type |
| * |
| * @struct: |
| * TT_Face |
| * |
| * @description: |
| * The TrueType face class. These objects model the resolution and |
| * point-size independent data found in a TrueType font file. |
| * |
| * @fields: |
| * root :: |
| * The base FT_Face structure, managed by the base layer. |
| * |
| * ttc_header :: |
| * The TrueType collection header, used when the file is a 'ttc' rather |
| * than a 'ttf'. For ordinary font files, the field `ttc_header.count` |
| * is set to 0. |
| * |
| * format_tag :: |
| * The font format tag. |
| * |
| * num_tables :: |
| * The number of TrueType tables in this font file. |
| * |
| * dir_tables :: |
| * The directory of TrueType tables for this font file. |
| * |
| * header :: |
| * The font's font header ('head' table). Read on font opening. |
| * |
| * horizontal :: |
| * The font's horizontal header ('hhea' table). This field also |
| * contains the associated horizontal metrics table ('hmtx'). |
| * |
| * max_profile :: |
| * The font's maximum profile table. Read on font opening. Note that |
| * some maximum values cannot be taken directly from this table. We |
| * thus define additional fields below to hold the computed maxima. |
| * |
| * vertical_info :: |
| * A boolean which is set when the font file contains vertical metrics. |
| * If not, the value of the 'vertical' field is undefined. |
| * |
| * vertical :: |
| * The font's vertical header ('vhea' table). This field also contains |
| * the associated vertical metrics table ('vmtx'), if found. |
| * IMPORTANT: The contents of this field is undefined if the |
| * `vertical_info` field is unset. |
| * |
| * num_names :: |
| * The number of name records within this TrueType font. |
| * |
| * name_table :: |
| * The table of name records ('name'). |
| * |
| * os2 :: |
| * The font's OS/2 table ('OS/2'). |
| * |
| * postscript :: |
| * The font's PostScript table ('post' table). The PostScript glyph |
| * names are not loaded by the driver on face opening. See the |
| * 'ttpost' module for more details. |
| * |
| * cmap_table :: |
| * Address of the face's 'cmap' SFNT table in memory (it's an extracted |
| * frame). |
| * |
| * cmap_size :: |
| * The size in bytes of the `cmap_table` described above. |
| * |
| * goto_table :: |
| * A function called by each TrueType table loader to position a |
| * stream's cursor to the start of a given table according to its tag. |
| * It defaults to TT_Goto_Face but can be different for strange formats |
| * (e.g. Type 42). |
| * |
| * access_glyph_frame :: |
| * A function used to access the frame of a given glyph within the |
| * face's font file. |
| * |
| * forget_glyph_frame :: |
| * A function used to forget the frame of a given glyph when all data |
| * has been loaded. |
| * |
| * read_glyph_header :: |
| * A function used to read a glyph header. It must be called between |
| * an 'access' and 'forget'. |
| * |
| * read_simple_glyph :: |
| * A function used to read a simple glyph. It must be called after the |
| * header was read, and before the 'forget'. |
| * |
| * read_composite_glyph :: |
| * A function used to read a composite glyph. It must be called after |
| * the header was read, and before the 'forget'. |
| * |
| * sfnt :: |
| * A pointer to the SFNT service. |
| * |
| * psnames :: |
| * A pointer to the PostScript names service. |
| * |
| * mm :: |
| * A pointer to the Multiple Masters service. |
| * |
| * var :: |
| * A pointer to the Metrics Variations service. |
| * |
| * hdmx :: |
| * The face's horizontal device metrics ('hdmx' table). This table is |
| * optional in TrueType/OpenType fonts. |
| * |
| * gasp :: |
| * The grid-fitting and scaling properties table ('gasp'). This table |
| * is optional in TrueType/OpenType fonts. |
| * |
| * pclt :: |
| * The 'pclt' SFNT table. |
| * |
| * num_sbit_scales :: |
| * The number of sbit scales for this font. |
| * |
| * sbit_scales :: |
| * Array of sbit scales embedded in this font. This table is optional |
| * in a TrueType/OpenType font. |
| * |
| * postscript_names :: |
| * A table used to store the Postscript names of the glyphs for this |
| * font. See the file `ttconfig.h` for comments on the |
| * TT_CONFIG_OPTION_POSTSCRIPT_NAMES option. |
| * |
| * palette_data :: |
| * Some fields from the 'CPAL' table that are directly indexed. |
| * |
| * palette_index :: |
| * The current palette index, as set by @FT_Palette_Select. |
| * |
| * palette :: |
| * An array containing the current palette's colors. |
| * |
| * have_foreground_color :: |
| * There was a call to @FT_Palette_Set_Foreground_Color. |
| * |
| * foreground_color :: |
| * The current foreground color corresponding to 'CPAL' color index |
| * 0xFFFF. Only valid if `have_foreground_color` is set. |
| * |
| * font_program_size :: |
| * Size in bytecodes of the face's font program. 0 if none defined. |
| * Ignored for Type 2 fonts. |
| * |
| * font_program :: |
| * The face's font program (bytecode stream) executed at load time, |
| * also used during glyph rendering. Comes from the 'fpgm' table. |
| * Ignored for Type 2 font fonts. |
| * |
| * cvt_program_size :: |
| * The size in bytecodes of the face's cvt program. Ignored for Type 2 |
| * fonts. |
| * |
| * cvt_program :: |
| * The face's cvt program (bytecode stream) executed each time an |
| * instance/size is changed/reset. Comes from the 'prep' table. |
| * Ignored for Type 2 fonts. |
| * |
| * cvt_size :: |
| * Size of the control value table (in entries). Ignored for Type 2 |
| * fonts. |
| * |
| * cvt :: |
| * The face's original control value table. Coordinates are expressed |
| * in unscaled font units (in 26.6 format). Comes from the 'cvt~' |
| * table. Ignored for Type 2 fonts. |
| * |
| * If varied by the `CVAR' table, non-integer values are possible. |
| * |
| * interpreter :: |
| * A pointer to the TrueType bytecode interpreters field is also used |
| * to hook the debugger in 'ttdebug'. |
| * |
| * extra :: |
| * Reserved for third-party font drivers. |
| * |
| * postscript_name :: |
| * The PS name of the font. Used by the postscript name service. |
| * |
| * glyf_len :: |
| * The length of the 'glyf' table. Needed for malformed 'loca' tables. |
| * |
| * glyf_offset :: |
| * The file offset of the 'glyf' table. |
| * |
| * is_cff2 :: |
| * Set if the font format is CFF2. |
| * |
| * doblend :: |
| * A boolean which is set if the font should be blended (this is for GX |
| * var). |
| * |
| * blend :: |
| * Contains the data needed to control GX variation tables (rather like |
| * Multiple Master data). |
| * |
| * variation_support :: |
| * Flags that indicate which OpenType functionality related to font |
| * variation support is present, valid, and usable. For example, |
| * TT_FACE_FLAG_VAR_FVAR is only set if we have at least one design |
| * axis. |
| * |
| * var_postscript_prefix :: |
| * The PostScript name prefix needed for constructing a variation font |
| * instance's PS name . |
| * |
| * var_postscript_prefix_len :: |
| * The length of the `var_postscript_prefix` string. |
| * |
| * horz_metrics_size :: |
| * The size of the 'hmtx' table. |
| * |
| * vert_metrics_size :: |
| * The size of the 'vmtx' table. |
| * |
| * num_locations :: |
| * The number of glyph locations in this TrueType file. This should be |
| * one more than the number of glyphs. Ignored for Type 2 fonts. |
| * |
| * glyph_locations :: |
| * An array of longs. These are offsets to glyph data within the |
| * 'glyf' table. Ignored for Type 2 font faces. |
| * |
| * hdmx_table :: |
| * A pointer to the 'hdmx' table. |
| * |
| * hdmx_table_size :: |
| * The size of the 'hdmx' table. |
| * |
| * hdmx_record_count :: |
| * The number of hdmx records. |
| * |
| * hdmx_record_size :: |
| * The size of a single hdmx record. |
| * |
| * hdmx_records :: |
| * A array of pointers to the 'hdmx' table records sorted by ppem. |
| * |
| * sbit_table :: |
| * A pointer to the font's embedded bitmap location table. |
| * |
| * sbit_table_size :: |
| * The size of `sbit_table`. |
| * |
| * sbit_table_type :: |
| * The sbit table type (CBLC, sbix, etc.). |
| * |
| * sbit_num_strikes :: |
| * The number of sbit strikes exposed by FreeType's API, omitting |
| * invalid strikes. |
| * |
| * sbit_strike_map :: |
| * A mapping between the strike indices exposed by the API and the |
| * indices used in the font's sbit table. |
| * |
| * cpal :: |
| * A pointer to data related to the 'CPAL' table. `NULL` if the table |
| * is not available. |
| * |
| * colr :: |
| * A pointer to data related to the 'COLR' table. `NULL` if the table |
| * is not available. |
| * |
| * kern_table :: |
| * A pointer to the 'kern' table. |
| * |
| * kern_table_size :: |
| * The size of the 'kern' table. |
| * |
| * num_kern_tables :: |
| * The number of supported kern subtables (up to 32; FreeType |
| * recognizes only horizontal ones with format 0). |
| * |
| * kern_avail_bits :: |
| * The availability status of kern subtables; if bit n is set, table n |
| * is available. |
| * |
| * kern_order_bits :: |
| * The sortedness status of kern subtables; if bit n is set, table n is |
| * sorted. |
| * |
| * bdf :: |
| * Data related to an SFNT font's 'bdf' table; see `tttypes.h`. |
| * |
| * horz_metrics_offset :: |
| * The file offset of the 'hmtx' table. |
| * |
| * vert_metrics_offset :: |
| * The file offset of the 'vmtx' table. |
| * |
| * sph_found_func_flags :: |
| * Flags identifying special bytecode functions (used by the v38 |
| * implementation of the bytecode interpreter). |
| * |
| * sph_compatibility_mode :: |
| * This flag is set if we are in ClearType backward compatibility mode |
| * (used by the v38 implementation of the bytecode interpreter). |
| * |
| * ebdt_start :: |
| * The file offset of the sbit data table (CBDT, bdat, etc.). |
| * |
| * ebdt_size :: |
| * The size of the sbit data table. |
| */ |
| typedef struct TT_FaceRec_ |
| { |
| FT_FaceRec root; |
| |
| TTC_HeaderRec ttc_header; |
| |
| FT_ULong format_tag; |
| FT_UShort num_tables; |
| TT_Table dir_tables; |
| |
| TT_Header header; /* TrueType header table */ |
| TT_HoriHeader horizontal; /* TrueType horizontal header */ |
| |
| TT_MaxProfile max_profile; |
| |
| FT_Bool vertical_info; |
| TT_VertHeader vertical; /* TT Vertical header, if present */ |
| |
| FT_UShort num_names; /* number of name records */ |
| TT_NameTableRec name_table; /* name table */ |
| |
| TT_OS2 os2; /* TrueType OS/2 table */ |
| TT_Postscript postscript; /* TrueType Postscript table */ |
| |
| FT_Byte* cmap_table; /* extracted `cmap' table */ |
| FT_ULong cmap_size; |
| |
| TT_Loader_GotoTableFunc goto_table; |
| |
| TT_Loader_StartGlyphFunc access_glyph_frame; |
| TT_Loader_EndGlyphFunc forget_glyph_frame; |
| TT_Loader_ReadGlyphFunc read_glyph_header; |
| TT_Loader_ReadGlyphFunc read_simple_glyph; |
| TT_Loader_ReadGlyphFunc read_composite_glyph; |
| |
| /* a typeless pointer to the SFNT_Interface table used to load */ |
| /* the basic TrueType tables in the face object */ |
| void* sfnt; |
| |
| /* a typeless pointer to the FT_Service_PsCMapsRec table used to */ |
| /* handle glyph names <-> unicode & Mac values */ |
| void* psnames; |
| |
| #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT |
| /* a typeless pointer to the FT_Service_MultiMasters table used to */ |
| /* handle variation fonts */ |
| void* mm; |
| |
| /* a typeless pointer to the FT_Service_MetricsVariationsRec table */ |
| /* used to handle the HVAR, VVAR, and MVAR OpenType tables */ |
| void* var; |
| #endif |
| |
| /* a typeless pointer to the PostScript Aux service */ |
| void* psaux; |
| |
| |
| /************************************************************************ |
| * |
| * Optional TrueType/OpenType tables |
| * |
| */ |
| |
| /* grid-fitting and scaling table */ |
| TT_GaspRec gasp; /* the `gasp' table */ |
| |
| /* PCL 5 table */ |
| TT_PCLT pclt; |
| |
| /* embedded bitmaps support */ |
| FT_ULong num_sbit_scales; |
| TT_SBit_Scale sbit_scales; |
| |
| /* postscript names table */ |
| TT_Post_NamesRec postscript_names; |
| |
| /* glyph colors */ |
| FT_Palette_Data palette_data; /* since 2.10 */ |
| FT_UShort palette_index; |
| FT_Color* palette; |
| FT_Bool have_foreground_color; |
| FT_Color foreground_color; |
| |
| |
| /************************************************************************ |
| * |
| * TrueType-specific fields (ignored by the CFF driver) |
| * |
| */ |
| |
| /* the font program, if any */ |
| FT_ULong font_program_size; |
| FT_Byte* font_program; |
| |
| /* the cvt program, if any */ |
| FT_ULong cvt_program_size; |
| FT_Byte* cvt_program; |
| |
| /* the original, unscaled, control value table */ |
| FT_ULong cvt_size; |
| FT_Int32* cvt; |
| |
| /* A pointer to the bytecode interpreter to use. This is also */ |
| /* used to hook the debugger for the `ttdebug' utility. */ |
| TT_Interpreter interpreter; |
| |
| |
| /************************************************************************ |
| * |
| * Other tables or fields. This is used by derivative formats like |
| * OpenType. |
| * |
| */ |
| |
| FT_Generic extra; |
| |
| const char* postscript_name; |
| |
| FT_ULong glyf_len; |
| FT_ULong glyf_offset; /* since 2.7.1 */ |
| |
| FT_Bool is_cff2; /* since 2.7.1 */ |
| |
| #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT |
| FT_Bool doblend; |
| GX_Blend blend; |
| |
| FT_UInt32 variation_support; /* since 2.7.1 */ |
| |
| const char* var_postscript_prefix; /* since 2.7.2 */ |
| FT_UInt var_postscript_prefix_len; /* since 2.7.2 */ |
| |
| #endif |
| |
| /* since version 2.2 */ |
| |
| FT_ULong horz_metrics_size; |
| FT_ULong vert_metrics_size; |
| |
| FT_ULong num_locations; /* up to 0xFFFF + 1 */ |
| FT_Byte* glyph_locations; |
| |
| FT_Byte* hdmx_table; |
| FT_ULong hdmx_table_size; |
| FT_UInt hdmx_record_count; |
| FT_ULong hdmx_record_size; |
| FT_Byte** hdmx_records; |
| |
| FT_Byte* sbit_table; |
| FT_ULong sbit_table_size; |
| TT_SbitTableType sbit_table_type; |
| FT_UInt sbit_num_strikes; |
| FT_UInt* sbit_strike_map; |
| |
| FT_Byte* kern_table; |
| FT_ULong kern_table_size; |
| FT_UInt num_kern_tables; |
| FT_UInt32 kern_avail_bits; |
| FT_UInt32 kern_order_bits; |
| |
| #ifdef TT_CONFIG_OPTION_BDF |
| TT_BDFRec bdf; |
| #endif /* TT_CONFIG_OPTION_BDF */ |
| |
| /* since 2.3.0 */ |
| FT_ULong horz_metrics_offset; |
| FT_ULong vert_metrics_offset; |
| |
| #ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY |
| /* since 2.4.12 */ |
| FT_ULong sph_found_func_flags; /* special functions found */ |
| /* for this face */ |
| FT_Bool sph_compatibility_mode; |
| #endif /* TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY */ |
| |
| #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS |
| /* since 2.7 */ |
| FT_ULong ebdt_start; /* either `CBDT', `EBDT', or `bdat' */ |
| FT_ULong ebdt_size; |
| #endif |
| |
| /* since 2.10 */ |
| void* cpal; |
| void* colr; |
| |
| /* since 2.12 */ |
| void* svg; |
| |
| } TT_FaceRec; |
| |
| |
| /************************************************************************** |
| * |
| * @struct: |
| * TT_GlyphZoneRec |
| * |
| * @description: |
| * A glyph zone is used to load, scale and hint glyph outline |
| * coordinates. |
| * |
| * @fields: |
| * memory :: |
| * A handle to the memory manager. |
| * |
| * max_points :: |
| * The maximum size in points of the zone. |
| * |
| * max_contours :: |
| * Max size in links contours of the zone. |
| * |
| * n_points :: |
| * The current number of points in the zone. |
| * |
| * n_contours :: |
| * The current number of contours in the zone. |
| * |
| * org :: |
| * The original glyph coordinates (font units/scaled). |
| * |
| * cur :: |
| * The current glyph coordinates (scaled/hinted). |
| * |
| * tags :: |
| * The point control tags. |
| * |
| * contours :: |
| * The contours end points. |
| * |
| * first_point :: |
| * Offset of the current subglyph's first point. |
| */ |
| typedef struct TT_GlyphZoneRec_ |
| { |
| FT_Memory memory; |
| FT_UShort max_points; |
| FT_Short max_contours; |
| FT_UShort n_points; /* number of points in zone */ |
| FT_Short n_contours; /* number of contours */ |
| |
| FT_Vector* org; /* original point coordinates */ |
| FT_Vector* cur; /* current point coordinates */ |
| FT_Vector* orus; /* original (unscaled) point coordinates */ |
| |
| FT_Byte* tags; /* current touch flags */ |
| FT_UShort* contours; /* contour end points */ |
| |
| FT_UShort first_point; /* offset of first (#0) point */ |
| |
| } TT_GlyphZoneRec, *TT_GlyphZone; |
| |
| |
| /* handle to execution context */ |
| typedef struct TT_ExecContextRec_* TT_ExecContext; |
| |
| |
| /************************************************************************** |
| * |
| * @type: |
| * TT_Size |
| * |
| * @description: |
| * A handle to a TrueType size object. |
| */ |
| typedef struct TT_SizeRec_* TT_Size; |
| |
| |
| /* glyph loader structure */ |
| typedef struct TT_LoaderRec_ |
| { |
| TT_Face face; |
| TT_Size size; |
| FT_GlyphSlot glyph; |
| FT_GlyphLoader gloader; |
| |
| FT_ULong load_flags; |
| FT_UInt glyph_index; |
| |
| FT_Stream stream; |
| FT_UInt byte_len; |
| |
| FT_Short n_contours; |
| FT_BBox bbox; |
| FT_Int left_bearing; |
| FT_Int advance; |
| FT_Int linear; |
| FT_Bool linear_def; |
| FT_Vector pp1; |
| FT_Vector pp2; |
| |
| /* the zone where we load our glyphs */ |
| TT_GlyphZoneRec base; |
| TT_GlyphZoneRec zone; |
| |
| TT_ExecContext exec; |
| FT_Byte* instructions; |
| FT_ULong ins_pos; |
| |
| /* for possible extensibility in other formats */ |
| void* other; |
| |
| /* since version 2.1.8 */ |
| FT_Int top_bearing; |
| FT_Int vadvance; |
| FT_Vector pp3; |
| FT_Vector pp4; |
| |
| /* since version 2.2.1 */ |
| FT_Byte* cursor; |
| FT_Byte* limit; |
| |
| /* since version 2.6.2 */ |
| FT_ListRec composites; |
| |
| /* since version 2.11.2 */ |
| FT_Byte* widthp; |
| |
| } TT_LoaderRec; |
| |
| |
| FT_END_HEADER |
| |
| #endif /* TTTYPES_H_ */ |
| |
| |
| /* END */ |
