http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/freetype2/freetype/freetype.h

/***************************************************************************/ /* */ /* freetype.h */ /* */ /* FreeType high-level API and common types (specification only). */ /* */ /* Copyright 1996-2001, 2002, 2003, 2004, 2005 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 FT_FREETYPE_H #error "`ft2build.h' hasn't been included yet!" #error "Please always use macros to include FreeType header files." #error "Example:" #error " #include <ft2build.h>" #error " #include FT_FREETYPE_H" #endif #ifndef __FREETYPE_H__ #define __FREETYPE_H__ /*************************************************************************/ /* */ /* The `raster' component duplicates some of the declarations in */ /* freetype.h for stand-alone use if _FREETYPE_ isn't defined. */ /* */ /*************************************************************************/ /* */ /* The FREETYPE_MAJOR and FREETYPE_MINOR macros are used to version the */ /* new FreeType design, which is able to host several kinds of font */ /* drivers. It starts at 2.0. */ /* */ #define FREETYPE_MAJOR 2 #define FREETYPE_MINOR 1 #define FREETYPE_PATCH 10 #include <ft2build.h> #include FT_CONFIG_CONFIG_H #include FT_ERRORS_H #include FT_TYPES_H FT_BEGIN_HEADER /*************************************************************************/ /*************************************************************************/ /* */ /* B A S I C T Y P E S */ /* */ /*************************************************************************/ /*************************************************************************/ /*************************************************************************/ /* */ /* <Section> */ /* base_interface */ /* */ /* <Title> */ /* Base Interface */ /* */ /* <Abstract> */ /* The FreeType 2 base font interface. */ /* */ /* <Description> */ /* This section describes the public high-level API of FreeType 2. */ /* */ /* <Order> */ /* FT_Library */ /* FT_Face */ /* FT_Size */ /* FT_GlyphSlot */ /* FT_CharMap */ /* FT_Encoding */ /* */ /* FT_FaceRec */ /* */ /* FT_FACE_FLAG_SCALABLE */ /* FT_FACE_FLAG_FIXED_SIZES */ /* FT_FACE_FLAG_FIXED_WIDTH */ /* FT_FACE_FLAG_HORIZONTAL */ /* FT_FACE_FLAG_VERTICAL */ /* FT_FACE_FLAG_SFNT */ /* FT_FACE_FLAG_KERNING */ /* FT_FACE_FLAG_MULTIPLE_MASTERS */ /* FT_FACE_FLAG_GLYPH_NAMES */ /* FT_FACE_FLAG_EXTERNAL_STREAM */ /* FT_FACE_FLAG_FAST_GLYPHS */ /* */ /* FT_STYLE_FLAG_BOLD */ /* FT_STYLE_FLAG_ITALIC */ /* */ /* FT_SizeRec */ /* FT_Size_Metrics */ /* */ /* FT_GlyphSlotRec */ /* FT_Glyph_Metrics */ /* FT_SubGlyph */ /* */ /* FT_Bitmap_Size */ /* */ /* FT_Init_FreeType */ /* FT_Done_FreeType */ /* FT_Library_Version */ /* */ /* FT_New_Face */ /* FT_Done_Face */ /* FT_New_Memory_Face */ /* FT_Open_Face */ /* FT_Open_Args */ /* FT_Parameter */ /* FT_Attach_File */ /* FT_Attach_Stream */ /* */ /* FT_Set_Char_Size */ /* FT_Set_Pixel_Sizes */ /* FT_Set_Transform */ /* FT_Load_Glyph */ /* FT_Get_Char_Index */ /* FT_Get_Name_Index */ /* FT_Load_Char */ /* */ /* FT_OPEN_MEMORY */ /* FT_OPEN_STREAM */ /* FT_OPEN_PATHNAME */ /* FT_OPEN_DRIVER */ /* FT_OPEN_PARAMS */ /* */ /* FT_LOAD_DEFAULT */ /* FT_LOAD_RENDER */ /* FT_LOAD_MONOCHROME */ /* FT_LOAD_LINEAR_DESIGN */ /* FT_LOAD_NO_SCALE */ /* FT_LOAD_NO_HINTING */ /* FT_LOAD_NO_BITMAP */ /* FT_LOAD_CROP_BITMAP */ /* */ /* FT_LOAD_VERTICAL_LAYOUT */ /* FT_LOAD_IGNORE_TRANSFORM */ /* FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH */ /* FT_LOAD_FORCE_AUTOHINT */ /* FT_LOAD_NO_RECURSE */ /* FT_LOAD_PEDANTIC */ /* */ /* FT_LOAD_TARGET_NORMAL */ /* FT_LOAD_TARGET_LIGHT */ /* FT_LOAD_TARGET_MONO */ /* FT_LOAD_TARGET_LCD */ /* FT_LOAD_TARGET_LCD_V */ /* */ /* FT_Render_Glyph */ /* FT_Render_Mode */ /* FT_Get_Kerning */ /* FT_Kerning_Mode */ /* FT_Get_Glyph_Name */ /* FT_Get_Postscript_Name */ /* */ /* FT_CharMapRec */ /* FT_Select_Charmap */ /* FT_Set_Charmap */ /* FT_Get_Charmap_Index */ /* */ /*************************************************************************/ /*************************************************************************/ /* */ /* <Struct> */ /* FT_Glyph_Metrics */ /* */ /* <Description> */ /* A structure used to model the metrics of a single glyph. The */ /* values are expressed in 26.6 fractional pixel format; if the flag */ /* FT_LOAD_NO_SCALE is used, values are returned in font units */ /* instead. */ /* */ /* <Fields> */ /* width :: */ /* The glyph's width. */ /* */ /* height :: */ /* The glyph's height. */ /* */ /* horiBearingX :: */ /* Left side bearing for horizontal layout. */ /* */ /* horiBearingY :: */ /* Top side bearing for horizontal layout. */ /* */ /* horiAdvance :: */ /* Advance width for horizontal layout. */ /* */ /* vertBearingX :: */ /* Left side bearing for vertical layout. */ /* */ /* vertBearingY :: */ /* Top side bearing for vertical layout. */ /* */ /* vertAdvance :: */ /* Advance height for vertical layout. */ /* */ typedef struct FT_Glyph_Metrics_ { FT_Pos width; FT_Pos height; FT_Pos horiBearingX; FT_Pos horiBearingY; FT_Pos horiAdvance; FT_Pos vertBearingX; FT_Pos vertBearingY; FT_Pos vertAdvance; } FT_Glyph_Metrics; /*************************************************************************/ /* */ /* <Struct> */ /* FT_Bitmap_Size */ /* */ /* <Description> */ /* This structure models the size of a bitmap strike (i.e., a bitmap */ /* instance of the font for a given resolution) in a fixed-size font */ /* face. It is used for the `available_sizes' field of the */ /* @FT_FaceRec structure. */ /* */ /* <Fields> */ /* height :: The (vertical) baseline-to-baseline distance in pixels. */ /* It makes most sense to define the height of a bitmap */ /* font in this way. */ /* */ /* width :: The average width of the font (in pixels). Since the */ /* algorithms to compute this value are different for the */ /* various bitmap formats, it can only give an additional */ /* hint if the `height' value isn't sufficient to select */ /* the proper font. For monospaced fonts the average width */ /* is the same as the maximum width. */ /* */ /* size :: The point size in 26.6 fractional format this font shall */ /* represent (for a given vertical resolution). */ /* */ /* x_ppem :: The horizontal ppem value (in 26.6 fractional format). */ /* */ /* y_ppem :: The vertical ppem value (in 26.6 fractional format). */ /* Usually, this is the `nominal' pixel height of the font. */ /* */ /* <Note> */ /* The values in this structure are taken from the bitmap font. If */ /* the font doesn't provide a parameter it is set to zero to indicate */ /* that the information is not available. */ /* */ /* The following formula converts from dpi to ppem: */ /* */ /* ppem = size * dpi / 72 */ /* */ /* where `size' is in points. */ /* */ /* Windows FNT: */ /* The `size' parameter is not reliable: There exist fonts (e.g., */ /* app850.fon) which have a wrong size for some subfonts; x_ppem */ /* and y_ppem are thus set equal to pixel width and height given in */ /* in the Windows FNT header. */ /* */ /* TrueType embedded bitmaps: */ /* `size', `width', and `height' values are not contained in the */ /* bitmap strike itself. They are computed from the global font */ /* parameters. */ /* */ typedef struct FT_Bitmap_Size_ { FT_Short height; FT_Short width; FT_Pos size; FT_Pos x_ppem; FT_Pos y_ppem; } FT_Bitmap_Size; /*************************************************************************/ /*************************************************************************/ /* */ /* O B J E C T C L A S S E S */ /* */ /*************************************************************************/ /*************************************************************************/ /*************************************************************************/ /* */ /* <Type> */ /* FT_Library */ /* */ /* <Description> */ /* A handle to a FreeType library instance. Each `library' is */ /* completely independent from the others; it is the `root' of a set */ /* of objects like fonts, faces, sizes, etc. */ /* */ /* It also embeds a memory manager (see @FT_Memory), as well as a */ /* scan-line converter object (see @FT_Raster). */ /* */ /* <Note> */ /* Library objects are normally created by @FT_Init_FreeType, and */ /* destroyed with @FT_Done_FreeType. */ /* */ typedef struct FT_LibraryRec_ *FT_Library; /*************************************************************************/ /* */ /* <Type> */ /* FT_Module */ /* */ /* <Description> */ /* A handle to a given FreeType module object. Each module can be a */ /* font driver, a renderer, or anything else that provides services */ /* to the formers. */ /* */ typedef struct FT_ModuleRec_* FT_Module; /*************************************************************************/ /* */ /* <Type> */ /* FT_Driver */ /* */ /* <Description> */ /* A handle to a given FreeType font driver object. Each font driver */ /* is a special module capable of creating faces from font files. */ /* */ typedef struct FT_DriverRec_* FT_Driver; /*************************************************************************/ /* */ /* <Type> */ /* FT_Renderer */ /* */ /* <Description> */ /* A handle to a given FreeType renderer. A renderer is a special */ /* module in charge of converting a glyph image to a bitmap, when */ /* necessary. Each renderer supports a given glyph image format, and */ /* one or more target surface depths. */ /* */ typedef struct FT_RendererRec_* FT_Renderer; /*************************************************************************/ /* */ /* <Type> */ /* FT_Face */ /* */ /* <Description> */ /* A handle to a given typographic face object. A face object models */ /* a given typeface, in a given style. */ /* */ /* <Note> */ /* Each face object also owns a single @FT_GlyphSlot object, as well */ /* as one or more @FT_Size objects. */ /* */ /* Use @FT_New_Face or @FT_Open_Face to create a new face object from */ /* a given filepathname or a custom input stream. */ /* */ /* Use @FT_Done_Face to destroy it (along with its slot and sizes). */ /* */ /* <Also> */ /* The @FT_FaceRec details the publicly accessible fields of a given */ /* face object. */ /* */ typedef struct FT_FaceRec_* FT_Face; /*************************************************************************/ /* */ /* <Type> */ /* FT_Size */ /* */ /* <Description> */ /* A handle to a given size object. Such an object models the data */ /* that depends on the current _resolution_ and _character size_ in a */ /* given @FT_Face. */ /* */ /* <Note> */ /* Each face object owns one or more sizes. There is however a */ /* single _active_ size for the face at any time that will be used by */ /* functions like @FT_Load_Glyph, @FT_Get_Kerning, etc. */ /* */ /* You can use the @FT_Activate_Size API to change the current */ /* active size of any given face. */ /* */ /* <Also> */ /* The @FT_SizeRec structure details the publicly accessible fields */ /* of a given face object. */ /* */ typedef struct FT_SizeRec_* FT_Size; /*************************************************************************/ /* */ /* <Type> */ /* FT_GlyphSlot */ /* */ /* <Description> */ /* A handle to a given `glyph slot'. A slot is a container where it */ /* is possible to load any one of the glyphs contained in its parent */ /* face. */ /* */ /* In other words, each time you call @FT_Load_Glyph or */ /* @FT_Load_Char, the slot's content is erased by the new glyph data, */ /* i.e. the glyph's metrics, its image (bitmap or outline), and */ /* other control information. */ /* */ /* <Also> */ /* @FT_GlyphSlotRec details the publicly accessible glyph fields. */ /* */ typedef struct FT_GlyphSlotRec_* FT_GlyphSlot; /*************************************************************************/ /* */ /* <Type> */ /* FT_CharMap */ /* */ /* <Description> */ /* A handle to a given character map. A charmap is used to translate */ /* character codes in a given encoding into glyph indexes for its */ /* parent's face. Some font formats may provide several charmaps per */ /* font. */ /* */ /* Each face object owns zero or more charmaps, but only one of them */ /* can be "active" and used by @FT_Get_Char_Index or @FT_Load_Char. */ /* */ /* The list of available charmaps in a face is available through the */ /* "face->num_charmaps" and "face->charmaps" fields of @FT_FaceRec. */ /* */ /* The currently active charmap is available as "face->charmap". */ /* You should call @FT_Set_Charmap to change it. */ /* */ /* <Note> */ /* When a new face is created (either through @FT_New_Face or */ /* @FT_Open_Face), the library looks for a Unicode charmap within */ /* the list and automatically activates it. */ /* */ /* <Also> */ /* The @FT_CharMapRec details the publicly accessible fields of a */ /* given character map. */ /* */ typedef struct FT_CharMapRec_* FT_CharMap; /*************************************************************************/ /* */ /* <Macro> */ /* FT_ENC_TAG */ /* */ /* <Description> */ /* This macro converts four letter tags into an unsigned long. It is */ /* used to define "encoding" identifiers (see @FT_Encoding). */ /* */ /* <Note> */ /* Since many 16bit compilers don't like 32bit enumerations, you */ /* should redefine this macro in case of problems to something like */ /* this: */ /* */ /* #define FT_ENC_TAG( value, a, b, c, d ) value */ /* */ /* to get a simple enumeration without assigning special numbers. */ /* */ #ifndef FT_ENC_TAG #define FT_ENC_TAG( value, a, b, c, d ) \ value = ( ( (FT_UInt32)(a) << 24 ) | \ ( (FT_UInt32)(b) << 16 ) | \ ( (FT_UInt32)(c) << 8 ) | \ (FT_UInt32)(d) ) #endif /* FT_ENC_TAG */ /*************************************************************************/ /* */ /* <Enum> */ /* FT_Encoding */ /* */ /* <Description> */ /* An enumeration used to specify encodings supported by charmaps. */ /* Used in the @FT_Select_Charmap API function. */ /* */ /* <Note> */ /* Because of 32-bit charcodes defined in Unicode (i.e., surrogates), */ /* all character codes must be expressed as FT_Longs. */ /* */ /* The values of this type correspond to specific character */ /* repertories (i.e. charsets), and not to text encoding methods */ /* (like UTF-8, UTF-16, GB2312_EUC, etc.). */ /* */ /* Other encodings might be defined in the future. */ /* */ /* <Values> */ /* FT_ENCODING_NONE :: */ /* The encoding value 0 is reserved. */ /* */ /* FT_ENCODING_UNICODE :: */ /* Corresponds to the Unicode character set. This value covers */ /* all versions of the Unicode repertoire, including ASCII and */ /* Latin-1. Most fonts include a Unicode charmap, but not all */ /* of them. */ /* */ /* FT_ENCODING_MS_SYMBOL :: */ /* Corresponds to the Microsoft Symbol encoding, used to encode */ /* mathematical symbols in the 32..255 character code range. For */ /* more information, see `http://www.ceviz.net/symbol.htm'. */ /* */ /* FT_ENCODING_SJIS :: */ /* Corresponds to Japanese SJIS encoding. More info at */ /* at `http://langsupport.japanreference.com/encoding.shtml'. */ /* See note on multi-byte encodings below. */ /* */ /* FT_ENCODING_GB2312 :: */ /* Corresponds to an encoding system for Simplified Chinese as used */ /* used in mainland China. */ /* */ /* FT_ENCODING_BIG5 :: */ /* Corresponds to an encoding system for Traditional Chinese as used */ /* in Taiwan and Hong Kong. */ /* */ /* FT_ENCODING_WANSUNG :: */ /* Corresponds to the Korean encoding system known as Wansung. */ /* For more information see */ /* `http://www.microsoft.com/typography/unicode/949.txt'. */ /* */ /* FT_ENCODING_JOHAB :: */ /* The Korean standard character set (KS C-5601-1992), which */ /* corresponds to MS Windows code page 1361. This character set */ /* includes all possible Hangeul character combinations. */ /* */ /* FT_ENCODING_ADOBE_LATIN_1 :: */ /* Corresponds to a Latin-1 encoding as defined in a Type 1 */ /* Postscript font. It is limited to 256 character codes. */ /* */ /* FT_ENCODING_ADOBE_STANDARD :: */ /* Corresponds to the Adobe Standard encoding, as found in Type 1, */ /* CFF, and OpenType/CFF fonts. It is limited to 256 character */ /* codes. */ /* */ /* FT_ENCODING_ADOBE_EXPERT :: */ /* Corresponds to the Adobe Expert encoding, as found in Type 1, */ /* CFF, and OpenType/CFF fonts. It is limited to 256 character */ /* codes. */ /* */ /* FT_ENCODING_ADOBE_CUSTOM :: */ /* Corresponds to a custom encoding, as found in Type 1, CFF, and */ /* OpenType/CFF fonts. It is limited to 256 character codes. */ /* */ /* FT_ENCODING_APPLE_ROMAN :: */ /* Corresponds to the 8-bit Apple roman encoding. Many TrueType and */ /* OpenType fonts contain a charmap for this encoding, since older */ /* versions of Mac OS are able to use it. */ /* */ /* FT_ENCODING_OLD_LATIN_2 :: */ /* This value is deprecated and was never used nor reported by */ /* FreeType. Don't use or test for it. */ /* */ /* FT_ENCODING_MS_SJIS :: */ /* Same as FT_ENCODING_SJIS. Deprecated. */ /* */ /* FT_ENCODING_MS_GB2312 :: */ /* Same as FT_ENCODING_GB2312. Deprecated. */ /* */ /* FT_ENCODING_MS_BIG5 :: */ /* Same as FT_ENCODING_BIG5. Deprecated. */ /* */ /* FT_ENCODING_MS_WANSUNG :: */ /* Same as FT_ENCODING_WANSUNG. Deprecated. */ /* */ /* FT_ENCODING_MS_JOHAB :: */ /* Same as FT_ENCODING_JOHAB. Deprecated. */ /* */ /* <Note> */ /* By default, FreeType automatically synthetizes a Unicode charmap */ /* for Postscript fonts, using their glyph names dictionaries. */ /* However, it will also report the encodings defined explicitly in */ /* the font file, for the cases when they are needed, with the Adobe */ /* values as well. */ /* */ /* FT_ENCODING_NONE is set by the BDF and PCF drivers if the charmap */ /* is neither Unicode nor ISO-8859-1 (otherwise it is set to */ /* FT_ENCODING_UNICODE). Use `FT_Get_BDF_Charset_ID' to find out */ /* which encoding is really present. If, for example, the */ /* `cs_registry' field is `KOI8' and the `cs_encoding' field is `R', */ /* the font is encoded in KOI8-R. */ /* */ /* FT_ENCODING_NONE is always set (with a single exception) by the */ /* winfonts driver. Use `FT_Get_WinFNT_Header' and examine the */ /* `charset' field of the `FT_WinFNT_HeaderRec' structure to find out */ /* which encoding is really present. For example, FT_WinFNT_ID_CP1251 */ /* (204) means Windows code page 1251 (for Russian). */ /* */ /* FT_ENCODING_NONE is set if `platform_id' is `TT_PLATFORM_MACINTOSH' */ /* and `encoding_id' is not `TT_MAC_ID_ROMAN' (otherwise it is set to */ /* FT_ENCODING_APPLE_ROMAN). */ /* */ /* If `platform_id' is `TT_PLATFORM_MACINTOSH', use the function */ /* `FT_Get_CMap_Language_ID' to query the Mac language ID which may be */ /* needed to be able to distinguish Apple encoding variants. See */ /* */ /* http://www.unicode.org/Public/MAPPINGS/VENDORS/APPLE/README.TXT */ /* */ /* to get an idea how to do that. Basically, if the language ID is 0, */ /* dont use it, otherwise subtract 1 from the language ID. Then */ /* examine `encoding_id'. If, for example, `encoding_id' is */ /* `TT_MAC_ID_ROMAN' and the language ID (minus 1) is */ /* `TT_MAC_LANGID_GREEK', it is the Greek encoding, not Roman. */ /* `TT_MAC_ID_ARABIC' with `TT_MAC_LANGID_FARSI' means the Farsi */ /* variant the Arabic encoding. */ /* */ typedef enum FT_Encoding_ { FT_ENC_TAG( FT_ENCODING_NONE, 0, 0, 0, 0 ), FT_ENC_TAG( FT_ENCODING_MS_SYMBOL, 's', 'y', 'm', 'b' ), FT_ENC_TAG( FT_ENCODING_UNICODE, 'u', 'n', 'i', 'c' ), FT_ENC_TAG( FT_ENCODING_SJIS, 's', 'j', 'i', 's' ), FT_ENC_TAG( FT_ENCODING_GB2312, 'g', 'b', ' ', ' ' ), FT_ENC_TAG( FT_ENCODING_BIG5, 'b', 'i', 'g', '5' ), FT_ENC_TAG( FT_ENCODING_WANSUNG, 'w', 'a', 'n', 's' ), FT_ENC_TAG( FT_ENCODING_JOHAB, 'j', 'o', 'h', 'a' ), /* for backwards compatibility */ FT_ENCODING_MS_SJIS = FT_ENCODING_SJIS, FT_ENCODING_MS_GB2312 = FT_ENCODING_GB2312, FT_ENCODING_MS_BIG5 = FT_ENCODING_BIG5, FT_ENCODING_MS_WANSUNG = FT_ENCODING_WANSUNG, FT_ENCODING_MS_JOHAB = FT_ENCODING_JOHAB, FT_ENC_TAG( FT_ENCODING_ADOBE_STANDARD, 'A', 'D', 'O', 'B' ), FT_ENC_TAG( FT_ENCODING_ADOBE_EXPERT, 'A', 'D', 'B', 'E' ), FT_ENC_TAG( FT_ENCODING_ADOBE_CUSTOM, 'A', 'D', 'B', 'C' ), FT_ENC_TAG( FT_ENCODING_ADOBE_LATIN_1, 'l', 'a', 't', '1' ), FT_ENC_TAG( FT_ENCODING_OLD_LATIN_2, 'l', 'a', 't', '2' ), FT_ENC_TAG( FT_ENCODING_APPLE_ROMAN, 'a', 'r', 'm', 'n' ) } FT_Encoding; /*************************************************************************/ /* */ /* <Enum> */ /* ft_encoding_xxx */ /* */ /* <Description> */ /* These constants are deprecated; use the corresponding @FT_Encoding */ /* values instead. */ /* */ /* <Values> */ /* ft_encoding_none :: see @FT_ENCODING_NONE */ /* ft_encoding_unicode :: see @FT_ENCODING_UNICODE */ /* ft_encoding_latin_2 :: see @FT_ENCODING_OLD_LATIN_2 */ /* ft_encoding_symbol :: see @FT_ENCODING_MS_SYMBOL */ /* ft_encoding_sjis :: see @FT_ENCODING_SJIS */ /* ft_encoding_gb2312 :: see @FT_ENCODING_GB2312 */ /* ft_encoding_big5 :: see @FT_ENCODING_BIG5 */ /* ft_encoding_wansung :: see @FT_ENCODING_WANSUNG */ /* ft_encoding_johab :: see @FT_ENCODING_JOHAB */ /* */ /* ft_encoding_adobe_standard :: see @FT_ENCODING_ADOBE_STANDARD */ /* ft_encoding_adobe_expert :: see @FT_ENCODING_ADOBE_EXPERT */ /* ft_encoding_adobe_custom :: see @FT_ENCODING_ADOBE_CUSTOM */ /* ft_encoding_latin_1 :: see @FT_ENCODING_ADOBE_LATIN_1 */ /* */ /* ft_encoding_apple_roman :: see @FT_ENCODING_APPLE_ROMAN */ /* */ #define ft_encoding_none FT_ENCODING_NONE #define ft_encoding_unicode FT_ENCODING_UNICODE #define ft_encoding_symbol FT_ENCODING_MS_SYMBOL #define ft_encoding_latin_1 FT_ENCODING_ADOBE_LATIN_1 #define ft_encoding_latin_2 FT_ENCODING_OLD_LATIN_2 #define ft_encoding_sjis FT_ENCODING_SJIS #define ft_encoding_gb2312 FT_ENCODING_GB2312 #define ft_encoding_big5 FT_ENCODING_BIG5 #define ft_encoding_wansung FT_ENCODING_WANSUNG #define ft_encoding_johab FT_ENCODING_JOHAB #define ft_encoding_adobe_standard FT_ENCODING_ADOBE_STANDARD #define ft_encoding_adobe_expert FT_ENCODING_ADOBE_EXPERT #define ft_encoding_adobe_custom FT_ENCODING_ADOBE_CUSTOM #define ft_encoding_apple_roman FT_ENCODING_APPLE_ROMAN /*************************************************************************/ /* */ /* <Struct> */ /* FT_CharMapRec */ /* */ /* <Description> */ /* The base charmap structure. */ /* */ /* <Fields> */ /* face :: A handle to the parent face object. */ /* */ /* encoding :: An @FT_Encoding tag identifying the charmap. Use */ /* this with @FT_Select_Charmap. */ /* */ /* platform_id :: An ID number describing the platform for the */ /* following encoding ID. This comes directly from */ /* the TrueType specification and should be emulated */ /* for other formats. */ /* */ /* encoding_id :: A platform specific encoding number. This also */ /* comes from the TrueType specification and should be */ /* emulated similarly. */ /* */ typedef struct FT_CharMapRec_ { FT_Face face; FT_Encoding encoding; FT_UShort platform_id; FT_UShort encoding_id; } FT_CharMapRec; /*************************************************************************/ /*************************************************************************/ /* */ /* B A S E O B J E C T C L A S S E S */ /* */ /*************************************************************************/ /*************************************************************************/ /*************************************************************************/ /* */ /* <Type> */ /* FT_Face_Internal */ /* */ /* <Description> */ /* An opaque handle to an FT_Face_InternalRec structure, used to */ /* model private data of a given @FT_Face object. */ /* */ /* This structure might change between releases of FreeType 2 and is */ /* not generally available to client applications. */ /* */ typedef struct FT_Face_InternalRec_* FT_Face_Internal; /*************************************************************************/ /* */ /* <Struct> */ /* FT_FaceRec */ /* */ /* <Description> */ /* FreeType root face class structure. A face object models the */ /* resolution and point-size independent data found in a font file. */ /* */ /* <Fields> */ /* num_faces :: In the case where the face is located in a */ /* collection (i.e., a file which embeds */ /* several faces), this is the total number of */ /* faces found in the resource. 1 by default. */ /* Accessing non-existent face indices causes */ /* an error. */ /* */ /* face_index :: The index of the face in its font file. */ /* Usually, this is 0 for all normal font */ /* formats. It can be > 0 in the case of */ /* collections (which embed several fonts in a */ /* single resource/file). */ /* */ /* face_flags :: A set of bit flags that give important */ /* information about the face; see the */ /* @FT_FACE_FLAG_XXX constants for details. */ /* */ /* style_flags :: A set of bit flags indicating the style of */ /* the face (i.e., italic, bold, underline, */ /* etc). See the @FT_STYLE_FLAG_XXX */ /* constants. */ /* */ /* num_glyphs :: The total number of glyphs in the face. */ /* */ /* family_name :: The face's family name. This is an ASCII */ /* string, usually in English, which describes */ /* the typeface's family (like `Times New */ /* Roman', `Bodoni', `Garamond', etc). This */ /* is a least common denominator used to list */ /* fonts. Some formats (TrueType & OpenType) */ /* provide localized and Unicode versions of */ /* this string. Applications should use the */ /* format specific interface to access them. */ /* */ /* style_name :: The face's style name. This is an ASCII */ /* string, usually in English, which describes */ /* the typeface's style (like `Italic', */ /* `Bold', `Condensed', etc). Not all font */ /* formats provide a style name, so this field */ /* is optional, and can be set to NULL. As */ /* for `family_name', some formats provide */ /* localized/Unicode versions of this string. */ /* Applications should use the format specific */ /* interface to access them. */ /* */ /* num_fixed_sizes :: The number of fixed sizes available in this */ /* face. This should be set to 0 for scalable */ /* fonts, unless its face includes a set of */ /* glyphs (called a `strike') for the */ /* specified sizes. */ /* */ /* available_sizes :: An array of sizes specifying the available */ /* bitmap/graymap sizes that are contained in */ /* in the font face. Should be set to NULL if */ /* the field `num_fixed_sizes' is set to 0. */ /* */ /* num_charmaps :: The total number of character maps in the */ /* face. */ /* */ /* charmaps :: A table of pointers to the face's charmaps. */ /* Used to scan the list of available charmaps */ /* -- this table might change after a call to */ /* @FT_Attach_File or @FT_Attach_Stream (e.g. */ /* if used to hook an additional encoding or */ /* CMap to the face object). */ /* */ /* generic :: A field reserved for client uses. See the */ /* @FT_Generic type description. */ /* */ /* bbox :: The font bounding box. Coordinates are */ /* expressed in font units (see units_per_EM). */ /* The box is large enough to contain any */ /* glyph from the font. Thus, bbox.yMax can */ /* be seen as the `maximal ascender', */ /* bbox.yMin as the `minimal descender', and */ /* the maximal glyph width is given by */ /* `bbox.xMax-bbox.xMin' (not to be confused */ /* with the maximal _advance_width_). Only */ /* relevant for scalable formats. */ /* */ /* units_per_EM :: The number of font units per EM square for */ /* this face. This is typically 2048 for */ /* TrueType fonts, 1000 for Type1 fonts, and */ /* should be set to the (unrealistic) value 1 */ /* for fixed-sizes fonts. Only relevant for */ /* scalable formats. */ /* */ /* ascender :: The face's ascender is the vertical */ /* distance from the baseline to the topmost */ /* point of any glyph in the face. This */ /* field's value is positive, expressed in */ /* font units. Some font designs use a value */ /* different from `bbox.yMax'. Only relevant */ /* for scalable formats. */ /* */ /* descender :: The face's descender is the vertical */ /* distance from the baseline to the */ /* bottommost point of any glyph in the face. */ /* This field's value is *negative* for values */ /* below the baseline. It is expressed in */ /* font units. Some font designs use a value */ /* different from `bbox.yMin'. Only relevant */ /* for scalable formats. */ /* */ /* height :: The face's height is the vertical distance */ /* from one baseline to the next when writing */ /* several lines of text. Its value is always */ /* positive, expressed in font units. The */ /* value can be computed as */ /* `ascender+descender+line_gap' where the */ /* value of `line_gap' is also called */ /* `external leading'. Only relevant for */ /* scalable formats. */ /* */ /* max_advance_width :: The maximal advance width, in font units, */ /* for all glyphs in this face. This can be */ /* used to make word wrapping computations */ /* faster. Only relevant for scalable */ /* formats. */ /* */ /* max_advance_height :: The maximal advance height, in font units, */ /* for all glyphs in this face. This is only */ /* relevant for vertical layouts, and should */ /* be set to the `height' for fonts that do */ /* not provide vertical metrics. Only */ /* relevant for scalable formats. */ /* */ /* underline_position :: The position, in font units, of the */ /* underline line for this face. It's the */ /* center of the underlining stem. Only */ /* relevant for scalable formats. */ /* */ /* underline_thickness :: The thickness, in font units, of the */ /* underline for this face. Only relevant for */ /* scalable formats. */ /* */ /* glyph :: The face's associated glyph slot(s). This */ /* object is created automatically with a new */ /* face object. However, certain kinds of */ /* applications (mainly tools like converters) */ /* can need more than one slot to ease their */ /* task. */ /* */ /* size :: The current active size for this face. */ /* */ /* charmap :: The current active charmap for this face. */ /* */ typedef struct FT_FaceRec_ { FT_Long num_faces; FT_Long face_index; FT_Long face_flags; FT_Long style_flags; FT_Long num_glyphs; FT_String* family_name; FT_String* style_name; FT_Int num_fixed_sizes; FT_Bitmap_Size* available_sizes; FT_Int num_charmaps; FT_CharMap* charmaps; FT_Generic generic; /*# the following are only relevant to scalable outlines */ FT_BBox bbox; FT_UShort units_per_EM; FT_Short ascender; FT_Short descender; FT_Short height; FT_Short max_advance_width; FT_Short max_advance_height; FT_Short underline_position; FT_Short underline_thickness; FT_GlyphSlot glyph; FT_Size size; FT_CharMap charmap; /*@private begin */ FT_Driver driver; FT_Memory memory; FT_Stream stream; FT_ListRec sizes_list; FT_Generic autohint; void* extensions; FT_Face_Internal internal; /*@private end */ } FT_FaceRec; /*************************************************************************/ /* */ /* <Enum> */ /* FT_FACE_FLAG_XXX */ /* */ /* <Description> */ /* A list of bit flags used in the `face_flags' field of the */ /* @FT_FaceRec structure. They inform client applications of */ /* properties of the corresponding face. */ /* */ /* <Values> */ /* FT_FACE_FLAG_SCALABLE :: */ /* Indicates that the face provides vectorial outlines. This */ /* doesn't prevent embedded bitmaps, i.e., a face can have both */ /* this bit and @FT_FACE_FLAG_FIXED_SIZES set. */ /* */ /* FT_FACE_FLAG_FIXED_SIZES :: */ /* Indicates that the face contains `fixed sizes', i.e., bitmap */ /* strikes for some given pixel sizes. See the `num_fixed_sizes' */ /* and `available_sizes' fields of @FT_FaceRec. */ /* */ /* FT_FACE_FLAG_FIXED_WIDTH :: */ /* Indicates that the face contains fixed-width characters (like */ /* Courier, Lucido, MonoType, etc.). */ /* */ /* FT_FACE_FLAG_SFNT :: */ /* Indicates that the face uses the `sfnt' storage scheme. For */ /* now, this means TrueType and OpenType. */ /* */ /* FT_FACE_FLAG_HORIZONTAL :: */ /* Indicates that the face contains horizontal glyph metrics. This */ /* should be set for all common formats. */ /* */ /* FT_FACE_FLAG_VERTICAL :: */ /* Indicates that the face contains vertical glyph metrics. This */ /* is only available in some formats, not all of them. */ /* */ /* FT_FACE_FLAG_KERNING :: */ /* Indicates that the face contains kerning information. If set, */ /* the kerning distance can be retrieved through the function */ /* @FT_Get_Kerning. Note that if unset, this function will always */ /* return the vector (0,0). */ /* */ /* FT_FACE_FLAG_FAST_GLYPHS :: */ /* THIS FLAG IS DEPRECATED. DO NOT USE OR TEST IT. */ /* */ /* FT_FACE_FLAG_MULTIPLE_MASTERS :: */ /* Indicates that the font contains multiple masters and is capable */ /* of interpolating between them. See the multiple-masters */ /* specific API for details. */ /* */ /* FT_FACE_FLAG_GLYPH_NAMES :: */ /* Indicates that the font contains glyph names that can be */ /* retrieved through @FT_Get_Glyph_Name. Note that some TrueType */ /* fonts contain broken glyph name tables. Use the function */ /* @FT_Has_PS_Glyph_Names when needed. */ /* */ /* FT_FACE_FLAG_EXTERNAL_STREAM :: */ /* Used internally by FreeType to indicate that a face's stream was */ /* provided by the client application and should not be destroyed */ /* when @FT_Done_Face is called. Don't read or test this flag. */ /* */ #define FT_FACE_FLAG_SCALABLE ( 1L << 0 ) #define FT_FACE_FLAG_FIXED_SIZES ( 1L << 1 ) #define FT_FACE_FLAG_FIXED_WIDTH ( 1L << 2 ) #define FT_FACE_FLAG_SFNT ( 1L << 3 ) #define FT_FACE_FLAG_HORIZONTAL ( 1L << 4 ) #define FT_FACE_FLAG_VERTICAL ( 1L << 5 ) #define FT_FACE_FLAG_KERNING ( 1L << 6 ) #define FT_FACE_FLAG_FAST_GLYPHS ( 1L << 7 ) #define FT_FACE_FLAG_MULTIPLE_MASTERS ( 1L << 8 ) #define FT_FACE_FLAG_GLYPH_NAMES ( 1L << 9 ) #define FT_FACE_FLAG_EXTERNAL_STREAM ( 1L << 10 ) /* */ /*************************************************************************/ /* */ /* @macro: */ /* FT_HAS_HORIZONTAL( face ) */ /* */ /* @description: */ /* A macro that returns true whenever a face object contains */ /* horizontal metrics (this is true for all font formats though). */ /* */ /* @also: */ /* @FT_HAS_VERTICAL can be used to check for vertical metrics. */ /* */ #define FT_HAS_HORIZONTAL( face ) \ ( face->face_flags & FT_FACE_FLAG_HORIZONTAL ) /*************************************************************************/ /* */ /* @macro: */ /* FT_HAS_VERTICAL( face ) */ /* */ /* @description: */ /* A macro that returns true whenever a face object contains vertical */ /* metrics. */ /* */ #define FT_HAS_VERTICAL( face ) \ ( face->face_flags & FT_FACE_FLAG_VERTICAL ) /*************************************************************************/ /* */ /* @macro: */ /* FT_HAS_KERNING( face ) */ /* */ /* @description: */ /* A macro that returns true whenever a face object contains kerning */ /* data that can be accessed with @FT_Get_Kerning. */ /* */ #define FT_HAS_KERNING( face ) \ ( face->face_flags & FT_FACE_FLAG_KERNING ) /*************************************************************************/ /* */ /* @macro: */ /* FT_IS_SCALABLE( face ) */ /* */ /* @description: */ /* A macro that returns true whenever a face object contains a */ /* scalable font face (true for TrueType, Type 1, CID, and */ /* OpenType/CFF font formats. */ /* */ #define FT_IS_SCALABLE( face ) \ ( face->face_flags & FT_FACE_FLAG_SCALABLE ) /*************************************************************************/ /* */ /* @macro: */ /* FT_IS_SFNT( face ) */ /* */ /* @description: */ /* A macro that returns true whenever a face object contains a font */ /* whose format is based on the SFNT storage scheme. This usually */ /* means: TrueType fonts, OpenType fonts, as well as SFNT-based */ /* embedded bitmap fonts. */ /* */ /* If this macro is true, all functions defined in @FT_SFNT_NAMES_H */ /* and @FT_TRUETYPE_TABLES_H are available. */ /* */ #define FT_IS_SFNT( face ) \ ( face->face_flags & FT_FACE_FLAG_SFNT ) /*************************************************************************/ /* */ /* @macro: */ /* FT_IS_FIXED_WIDTH( face ) */ /* */ /* @description: */ /* A macro that returns true whenever a face object contains a font */ /* face that contains fixed-width (or "monospace", "fixed-pitch", */ /* etc.) glyphs. */ /* */ #define FT_IS_FIXED_WIDTH( face ) \ ( face->face_flags & FT_FACE_FLAG_FIXED_WIDTH ) /*************************************************************************/ /* */ /* @macro: */ /* FT_HAS_FIXED_SIZES( face ) */ /* */ /* @description: */ /* A macro that returns true whenever a face object contains some */ /* embedded bitmaps. See the `available_sizes' field of the */ /* @FT_FaceRec structure. */ /* */ #define FT_HAS_FIXED_SIZES( face ) \ ( face->face_flags & FT_FACE_FLAG_FIXED_SIZES ) /* */ /*************************************************************************/ /* */ /* @macro: */ /* FT_HAS_FAST_GLYPHS( face ) */ /* */ /* @description: */ /* Deprecated; indicates that the face contains so-called "fast" */ /* glyph bitmaps. */ /* */ #define FT_HAS_FAST_GLYPHS( face ) \ ( face->face_flags & FT_FACE_FLAG_FAST_GLYPHS ) /*************************************************************************/ /* */ /* @macro: */ /* FT_HAS_GLYPH_NAMES( face ) */ /* */ /* @description: */ /* A macro that returns true whenever a face object contains some */ /* glyph names that can be accessed through @FT_Get_Glyph_Name. */ /* */ #define FT_HAS_GLYPH_NAMES( face ) \ ( face->face_flags & FT_FACE_FLAG_GLYPH_NAMES ) /*************************************************************************/ /* */ /* @macro: */ /* FT_HAS_MULTIPLE_MASTERS( face ) */ /* */ /* @description: */ /* A macro that returns true whenever a face object contains some */ /* multiple masters. The functions provided by */ /* @FT_MULTIPLE_MASTERS_H are then available to choose the exact */ /* design you want. */ /* */ #define FT_HAS_MULTIPLE_MASTERS( face ) \ ( face->face_flags & FT_FACE_FLAG_MULTIPLE_MASTERS ) /*************************************************************************/ /* */ /* <Constant> */ /* FT_STYLE_FLAG_XXX */ /* */ /* <Description> */ /* A list of bit-flags used to indicate the style of a given face. */ /* These are used in the `style_flags' field of @FT_FaceRec. */ /* */ /* <Values> */ /* FT_STYLE_FLAG_ITALIC :: */ /* Indicates that a given face is italicized. */ /* */ /* FT_STYLE_FLAG_BOLD :: */ /* Indicates that a given face is bold. */ /* */ #define FT_STYLE_FLAG_ITALIC ( 1 << 0 ) #define FT_STYLE_FLAG_BOLD ( 1 << 1 ) /*************************************************************************/ /* */ /* <Type> */ /* FT_Size_Internal */ /* */ /* <Description> */ /* An opaque handle to an FT_Size_InternalRec structure, used to */ /* model private data of a given FT_Size object. */ /* */ typedef struct FT_Size_InternalRec_* FT_Size_Internal; /*************************************************************************/ /* */ /* <Struct> */ /* FT_Size_Metrics */ /* */ /* <Description> */ /* The size metrics structure returned scaled important distances for */ /* a given size object. */ /* */ /* <Fields> */ /* x_ppem :: The character width, expressed in integer pixels. */ /* This is the width of the EM square expressed in */ /* pixels, hence the term `ppem' (pixels per EM). */ /* */ /* y_ppem :: The character height, expressed in integer pixels. */ /* This is the height of the EM square expressed in */ /* pixels, hence the term `ppem' (pixels per EM). */ /* */ /* x_scale :: A simple 16.16 fixed point format coefficient used */ /* to scale horizontal distances expressed in font */ /* units to fractional (26.6) pixel coordinates. */ /* */ /* y_scale :: A simple 16.16 fixed point format coefficient used */ /* to scale vertical distances expressed in font */ /* units to fractional (26.6) pixel coordinates. */ /* */ /* ascender :: The ascender, expressed in 26.6 fixed point */ /* pixels. Positive for ascenders above the */ /* baseline. */ /* */ /* descender :: The descender, expressed in 26.6 fixed point */ /* pixels. Negative for descenders below the */ /* baseline. */ /* */ /* height :: The text height, expressed in 26.6 fixed point */ /* pixels. Always positive. */ /* */ /* max_advance :: Maximum horizontal advance, expressed in 26.6 */ /* fixed point pixels. Always positive. */ /* */ /* <Note> */ /* For scalable fonts, the values of `ascender', `descender', and */ /* `height' are scaled versions of `face->ascender', */ /* `face->descender', and `face->height', respectively. */ /* */ /* Unfortunately, due to glyph hinting, these values might not be */ /* exact for certain fonts. They thus must be treated as unreliable */ /* with an error margin of at least one pixel! */ /* */ /* Indeed, the only way to get the exact pixel ascender and descender */ /* is to render _all_ glyphs. As this would be a definite */ /* performance hit, it is up to client applications to perform such */ /* computations. */ /* */ typedef struct FT_Size_Metrics_ { FT_UShort x_ppem; /* horizontal pixels per EM */ FT_UShort y_ppem; /* vertical pixels per EM */ FT_Fixed x_scale; /* two scales used to convert font units */ FT_Fixed y_scale; /* to 26.6 frac. pixel coordinates */ FT_Pos ascender; /* ascender in 26.6 frac. pixels */ FT_Pos descender; /* descender in 26.6 frac. pixels */ FT_Pos height; /* text height in 26.6 frac. pixels */ FT_Pos max_advance; /* max horizontal advance, in 26.6 pixels */ } FT_Size_Metrics; /*************************************************************************/ /* */ /* <Struct> */ /* FT_SizeRec */ /* */ /* <Description> */ /* FreeType root size class structure. A size object models the */ /* resolution and pointsize dependent data of a given face. */ /* */ /* <Fields> */ /* face :: Handle to the parent face object. */ /* */ /* generic :: A typeless pointer, which is unused by the FreeType */ /* library or any of its drivers. It can be used by */ /* client applications to link their own data to each size */ /* object. */ /* */ /* metrics :: Metrics for this size object. This field is read-only. */ /* */ typedef struct FT_SizeRec_ { FT_Face face; /* parent face object */ FT_Generic generic; /* generic pointer for client uses */ FT_Size_Metrics metrics; /* size metrics */ FT_Size_Internal internal; } FT_SizeRec; /*************************************************************************/ /* */ /* <Struct> */ /* FT_SubGlyph */ /* */ /* <Description> */ /* The subglyph structure is an internal object used to describe */ /* subglyphs (for example, in the case of composites). */ /* */ /* <Note> */ /* The subglyph implementation is not part of the high-level API, */ /* hence the forward structure declaration. */ /* */ typedef struct FT_SubGlyphRec_* FT_SubGlyph; /*************************************************************************/ /* */ /* <Type> */ /* FT_Slot_Internal */ /* */ /* <Description> */ /* An opaque handle to an FT_Slot_InternalRec structure, used to */ /* model private data of a given FT_GlyphSlot object. */ /* */ typedef struct FT_Slot_InternalRec_* FT_Slot_Internal; /*************************************************************************/ /* */ /* <Struct> */ /* FT_GlyphSlotRec */ /* */ /* <Description> */ /* FreeType root glyph slot class structure. A glyph slot is a */ /* container where individual glyphs can be loaded, be they */ /* vectorial or bitmap/graymaps. */ /* */ /* <Fields> */ /* library :: A handle to the FreeType library instance */ /* this slot belongs to. */ /* */ /* face :: A handle to the parent face object. */ /* */ /* next :: In some cases (like some font tools), several */ /* glyph slots per face object can be a good */ /* thing. As this is rare, the glyph slots are */ /* listed through a direct, single-linked list */ /* using its `next' field. */ /* */ /* generic :: A typeless pointer which is unused by the */ /* FreeType library or any of its drivers. It */ /* can be used by client applications to link */ /* their own data to each glyph slot object. */ /* */ /* metrics :: The metrics of the last loaded glyph in the */ /* slot. The returned values depend on the last */ /* load flags (see the @FT_Load_Glyph API */ /* function) and can be expressed either in 26.6 */ /* fractional pixels or font units. */ /* */ /* Note that even when the glyph image is */ /* transformed, the metrics are not. */ /* */ /* linearHoriAdvance :: For scalable formats only, this field holds */ /* the linearly scaled horizontal advance width */ /* for the glyph (i.e. the scaled and unhinted */ /* value of the hori advance). This can be */ /* important to perform correct WYSIWYG layout. */ /* */ /* Note that this value is expressed by default */ /* in 16.16 pixels. However, when the glyph is */ /* loaded with the FT_LOAD_LINEAR_DESIGN flag, */ /* this field contains simply the value of the */ /* advance in original font units. */ /* */ /* linearVertAdvance :: For scalable formats only, this field holds */ /* the linearly scaled vertical advance height */ /* for the glyph. See linearHoriAdvance for */ /* comments. */ /* */ /* advance :: This is the transformed advance width for the */ /* glyph. */ /* */ /* format :: This field indicates the format of the image */ /* contained in the glyph slot. Typically */ /* FT_GLYPH_FORMAT_BITMAP, */ /* FT_GLYPH_FORMAT_OUTLINE, and */ /* FT_GLYPH_FORMAT_COMPOSITE, but others are */ /* possible. */ /* */ /* bitmap :: This field is used as a bitmap descriptor */ /* when the slot format is */ /* FT_GLYPH_FORMAT_BITMAP. Note that the */ /* address and content of the bitmap buffer can */ /* change between calls of @FT_Load_Glyph and a */ /* few other functions. */ /* */ /* bitmap_left :: This is the bitmap's left bearing expressed */ /* in integer pixels. Of course, this is only */ /* valid if the format is */ /* FT_GLYPH_FORMAT_BITMAP. */ /* */ /* bitmap_top :: This is the bitmap's top bearing expressed in */ /* integer pixels. Remember that this is the */ /* distance from the baseline to the top-most */ /* glyph scanline, upwards y-coordinates being */ /* *positive*. */ /* */ /* outline :: The outline descriptor for the current glyph */ /* image if its format is */ /* FT_GLYPH_FORMAT_OUTLINE. */ /* */ /* num_subglyphs :: The number of subglyphs in a composite glyph. */ /* This field is only valid for the composite */ /* glyph format that should normally only be */ /* loaded with the @FT_LOAD_NO_RECURSE flag. */ /* For now this is internal to FreeType. */ /* */ /* subglyphs :: An array of subglyph descriptors for */ /* composite glyphs. There are `num_subglyphs' */ /* elements in there. Currently internal to */ /* FreeType. */ /* */ /* control_data :: Certain font drivers can also return the */ /* control data for a given glyph image (e.g. */ /* TrueType bytecode, Type 1 charstrings, etc.). */ /* This field is a pointer to such data. */ /* */ /* control_len :: This is the length in bytes of the control */ /* data. */ /* */ /* other :: Really wicked formats can use this pointer to */ /* present their own glyph image to client apps. */ /* Note that the app will need to know about the */ /* image format. */ /* */ /* lsb_delta :: The difference between hinted and unhinted */ /* left side bearing while autohinting is */ /* active. Zero otherwise. */ /* */ /* rsb_delta :: The difference between hinted and unhinted */ /* right side bearing while autohinting is */ /* active. Zero otherwise. */ /* */ /* <Note> */ /* If @FT_Load_Glyph is called with default flags (see */ /* @FT_LOAD_DEFAULT) the glyph image is loaded in the glyph slot in */ /* its native format (e.g. a vectorial outline for TrueType and */ /* Type 1 formats). */ /* */ /* This image can later be converted into a bitmap by calling */ /* @FT_Render_Glyph. This function finds the current renderer for */ /* the native image's format then invokes it. */ /* */ /* The renderer is in charge of transforming the native image through */ /* the slot's face transformation fields, then convert it into a */ /* bitmap that is returned in `slot->bitmap'. */ /* */ /* Note that `slot->bitmap_left' and `slot->bitmap_top' are also used */ /* to specify the position of the bitmap relative to the current pen */ /* position (e.g. coordinates [0,0] on the baseline). Of course, */ /* `slot->format' is also changed to `FT_GLYPH_FORMAT_BITMAP' . */ /* */ /* <Note> */ /* Here a small pseudo code fragment which shows how to use */ /* `lsb_delta' and `rsb_delta': */ /* */ /* { */ /* FT_Pos origin_x = 0; */ /* FT_Pos prev_rsb_delta = 0; */ /* */ /* */ /* for all glyphs do */ /* <compute kern between current and previous glyph and add it to */ /* `origin_x'> */ /* */ /* <load glyph with `FT_Load_Glyph'> */ /* */ /* if ( prev_rsb_delta - face->glyph->lsb_delta >= 32 ) */ /* origin_x -= 64; */ /* else if ( prev_rsb_delta - face->glyph->lsb_delta < -32 ) */ /* origin_x += 64; */ /* */ /* prev_rsb_delta = face->glyph->rsb_delta; */ /* */ /* <save glyph image, or render glyph, or ...> */ /* */ /* origin_x += face->glyph->advance.x; */ /* endfor */ /* } */ /* */ typedef struct FT_GlyphSlotRec_ { FT_Library library; FT_Face face; FT_GlyphSlot next; FT_UInt reserved; /* retained for binary compatibility */ FT_Generic generic; FT_Glyph_Metrics metrics; FT_Fixed linearHoriAdvance; FT_Fixed linearVertAdvance; FT_Vector advance; FT_Glyph_Format format; FT_Bitmap bitmap; FT_Int bitmap_left; FT_Int bitmap_top; FT_Outline outline; FT_UInt num_subglyphs; FT_SubGlyph subglyphs; void* control_data; long control_len; FT_Pos lsb_delta; FT_Pos rsb_delta; void* other; FT_Slot_Internal internal; } FT_GlyphSlotRec; /*************************************************************************/ /*************************************************************************/ /* */ /* F U N C T I O N S */ /* */ /*************************************************************************/ /*************************************************************************/ /*************************************************************************/ /* */ /* <Function> */ /* FT_Init_FreeType */ /* */ /* <Description> */ /* Initializes a new FreeType library object. The set of modules */ /* that are registered by this function is determined at build time. */ /* */ /* <Output> */ /* alibrary :: A handle to a new library object. */ /* */ /* <Return> */ /* FreeType error code. 0 means success. */ /* */ FT_EXPORT( FT_Error ) FT_Init_FreeType( FT_Library *alibrary ); /*************************************************************************/ /* */ /* <Function> */ /* FT_Library_Version */ /* */ /* <Description> */ /* Return the version of the FreeType library being used. This is */ /* useful when dynamically linking to the library, since one cannot */ /* use the macros FT_FREETYPE_MAJOR, FT_FREETYPE_MINOR, and */ /* FT_FREETYPE_PATCH. */ /* */ /* <Input> */ /* library :: A source library handle. */ /* */ /* <Output> */ /* amajor :: The major version number. */ /* */ /* aminor :: The minor version number. */ /* */ /* apatch :: The patch version number. */ /* */ /* <Note> */ /* The reason why this function takes a 'library' argument is because */ /* certain programs implement library initialization in a custom way */ /* that doesn't use `FT_Init_FreeType'. */ /* */ /* In such cases, the library version might not be available before */ /* the library object has been created. */ /* */ FT_EXPORT( void ) FT_Library_Version( FT_Library library, FT_Int *amajor, FT_Int *aminor, FT_Int *apatch ); /*************************************************************************/ /* */ /* <Function> */ /* FT_Done_FreeType */ /* */ /* <Description> */ /* Destroys a given FreeType library object and all of its childs, */ /* including resources, drivers, faces, sizes, etc. */ /* */ /* <Input> */ /* library :: A handle to the target library object. */ /* */ /* <Return> */ /* FreeType error code. 0 means success. */ /* */ FT_EXPORT( FT_Error ) FT_Done_FreeType( FT_Library library ); /*************************************************************************/ /* */ /* <Enum> */ /* FT_OPEN_XXX */ /* */ /* <Description> */ /* A list of bit-field constants used within the `flags' field of the */ /* @FT_Open_Args structure. */ /* */ /* <Values> */ /* FT_OPEN_MEMORY :: This is a memory-based stream. */ /* */ /* FT_OPEN_STREAM :: Copy the stream from the `stream' field. */ /* */ /* FT_OPEN_PATHNAME :: Create a new input stream from a C */ /* path name. */ /* */ /* FT_OPEN_DRIVER :: Use the `driver' field. */ /* */ /* FT_OPEN_PARAMS :: Use the `num_params' & `params' field. */ /* */ /* ft_open_memory :: Deprecated; use @FT_OPEN_MEMORY instead. */ /* */ /* ft_open_stream :: Deprecated; use @FT_OPEN_STREAM instead. */ /* */ /* ft_open_pathname :: Deprecated; use @FT_OPEN_PATHNAME instead. */ /* */ /* ft_open_driver :: Deprecated; use @FT_OPEN_DRIVER instead. */ /* */ /* ft_open_params :: Deprecated; use @FT_OPEN_PARAMS instead. */ /* */ /* <Note> */ /* The `FT_OPEN_MEMORY', `FT_OPEN_STREAM', and `FT_OPEN_PATHNAME' */ /* flags are mutually exclusive. */ /* */ #define FT_OPEN_MEMORY 0x1 #define FT_OPEN_STREAM 0x2 #define FT_OPEN_PATHNAME 0x4 #define FT_OPEN_DRIVER 0x8 #define FT_OPEN_PARAMS 0x10 #define ft_open_memory FT_OPEN_MEMORY /* deprecated */ #define ft_open_stream FT_OPEN_STREAM /* deprecated */ #define ft_open_pathname FT_OPEN_PATHNAME /* deprecated */ #define ft_open_driver FT_OPEN_DRIVER /* deprecated */ #define ft_open_params FT_OPEN_PARAMS /* deprecated */ /*************************************************************************/ /* */ /* <Struct> */ /* FT_Parameter */ /* */ /* <Description> */ /* A simple structure used to pass more or less generic parameters */ /* to @FT_Open_Face. */ /* */ /* <Fields> */ /* tag :: A 4-byte identification tag. */ /* */ /* data :: A pointer to the parameter data. */ /* */ /* <Note> */ /* The id and function of parameters are driver-specific. */ /* */ typedef struct FT_Parameter_ { FT_ULong tag; FT_Pointer data; } FT_Parameter; /*************************************************************************/ /* */ /* <Struct> */ /* FT_Open_Args */ /* */ /* <Description> */ /* A structure used to indicate how to open a new font file/stream. */ /* A pointer to such a structure can be used as a parameter for the */ /* functions @FT_Open_Face and @FT_Attach_Stream. */ /* */ /* <Fields> */ /* flags :: A set of bit flags indicating how to use the */ /* structure. */ /* */ /* memory_base :: The first byte of the file in memory. */ /* */ /* memory_size :: The size in bytes of the file in memory. */ /* */ /* pathname :: A pointer to an 8-bit file pathname. */ /* */ /* stream :: A handle to a source stream object. */ /* */ /* driver :: This field is exclusively used by @FT_Open_Face; */ /* it simply specifies the font driver to use to open */ /* the face. If set to 0, FreeType will try to load */ /* the face with each one of the drivers in its list. */ /* */ /* num_params :: The number of extra parameters. */ /* */ /* params :: Extra parameters passed to the font driver when */ /* opening a new face. */ /* */ /* <Note> */ /* The stream type is determined by the contents of `flags' which */ /* are tested in the following order by @FT_Open_Face: */ /* */ /* If the `FT_OPEN_MEMORY' bit is set, assume that this is a */ /* memory file of `memory_size' bytes,located at `memory_address'. */ /* */ /* Otherwise, if the `FT_OPEN_STREAM' bit is set, assume that a */ /* custom input stream `stream' is used. */ /* */ /* Otherwise, if the `FT_OPEN_PATHNAME' bit is set, assume that this */ /* is a normal file and use `pathname' to open it. */ /* */ /* If the `FT_OPEN_DRIVER' bit is set, @FT_Open_Face will only try to */ /* open the file with the driver whose handler is in `driver'. */ /* */ /* If the `FT_OPEN_PARAMS' bit is set, the parameters given by */ /* `num_params' and `params' will be used. They are ignored */ /* otherwise. */ /* */ typedef struct FT_Open_Args_ { FT_UInt flags; const FT_Byte* memory_base; FT_Long memory_size; FT_String* pathname; FT_Stream stream; FT_Module driver; FT_Int num_params; FT_Parameter* params; } FT_Open_Args; /*************************************************************************/ /* */ /* <Function> */ /* FT_New_Face */ /* */ /* <Description> */ /* Creates a new face object from a given resource and typeface index */ /* using a pathname to the font file. */ /* */ /* <InOut> */ /* library :: A handle to the library resource. */ /* */ /* <Input> */ /* pathname :: A path to the font file. */ /* */ /* face_index :: The index of the face within the resource. The */ /* first face has index 0. */ /* */ /* <Output> */ /* aface :: A handle to a new face object. */ /* */ /* <Return> */ /* FreeType error code. 0 means success. */ /* */ /* <Note> */ /* Unlike FreeType 1.x, this function automatically creates a glyph */ /* slot for the face object which can be accessed directly through */ /* `face->glyph'. */ /* */ /* @FT_New_Face can be used to determine and/or check the font format */ /* of a given font resource. If the `face_index' field is negative, */ /* the function will _not_ return any face handle in `aface'; the */ /* return value is 0 if the font format is recognized, or non-zero */ /* otherwise. */ /* */ /* Each new face object created with this function also owns a */ /* default @FT_Size object, accessible as `face->size'. */ /* */ FT_EXPORT( FT_Error ) FT_New_Face( FT_Library library, const char* filepathname, FT_Long face_index, FT_Face *aface ); /*************************************************************************/ /* */ /* <Function> */ /* FT_New_Memory_Face */ /* */ /* <Description> */ /* Creates a new face object from a given resource and typeface index */ /* using a font file already loaded into memory. */ /* */ /* <InOut> */ /* library :: A handle to the library resource. */ /* */ /* <Input> */ /* file_base :: A pointer to the beginning of the font data. */ /* */ /* file_size :: The size of the memory chunk used by the font data. */ /* */ /* face_index :: The index of the face within the resource. The */ /* first face has index 0. */ /* */ /* <Output> */ /* aface :: A handle to a new face object. */ /* */ /* <Return> */ /* FreeType error code. 0 means success. */ /* */ /* <Note> */ /* The font data bytes are used _directly_ by the @FT_Face object. */ /* This means that they are not copied, and that the client is */ /* responsible for releasing/destroying them _after_ the */ /* corresponding call to @FT_Done_Face . */ /* */ /* Unlike FreeType 1.x, this function automatically creates a glyph */ /* slot for the face object which can be accessed directly through */ /* `face->glyph'. */ /* */ /* @FT_New_Memory_Face can be used to determine and/or check the font */ /* format of a given font resource. If the `face_index' field is */ /* negative, the function will _not_ return any face handle in */ /* `aface'; the return value is 0 if the font format is recognized, */ /* or non-zero otherwise. */ /* */ FT_EXPORT( FT_Error ) FT_New_Memory_Face( FT_Library library, const FT_Byte* file_base, FT_Long file_size, FT_Long face_index, FT_Face *aface ); /*************************************************************************/ /* */ /* <Function> */ /* FT_Open_Face */ /* */ /* <Description> */ /* Opens a face object from a given resource and typeface index using */ /* an `FT_Open_Args' structure. If the face object doesn't exist, it */ /* will be created. */ /* */ /* <InOut> */ /* library :: A handle to the library resource. */ /* */ /* <Input> */ /* args :: A pointer to an `FT_Open_Args' structure which must */ /* be filled by the caller. */ /* */ /* face_index :: The index of the face within the resource. The */ /* first face has index 0. */ /* */ /* <Output> */ /* aface :: A handle to a new face object. */ /* */ /* <Return> */ /* FreeType error code. 0 means success. */ /* */ /* <Note> */ /* Unlike FreeType 1.x, this function automatically creates a glyph */ /* slot for the face object which can be accessed directly through */ /* `face->glyph'. */ /* */ /* @FT_Open_Face can be used to determine and/or check the font */ /* format of a given font resource. If the `face_index' field is */ /* negative, the function will _not_ return any face handle in */ /* `*aface'; the function's return value is 0 if the font format is */ /* recognized, or non-zero otherwise. */ /* */ FT_EXPORT( FT_Error ) FT_Open_Face( FT_Library library, const FT_Open_Args* args, FT_Long face_index, FT_Face *aface ); /*************************************************************************/ /* */ /* <Function> */ /* FT_Attach_File */ /* */ /* <Description> */ /* `Attaches' a given font file to an existing face. This is usually */ /* to read additional information for a single face object. For */ /* example, it is used to read the AFM files that come with Type 1 */ /* fonts in order to add kerning data and other metrics. */ /* */ /* <InOut> */ /* face :: The target face object. */ /* */ /* <Input> */ /* filepathname :: An 8-bit pathname naming the `metrics' file. */ /* */ /* <Return> */ /* FreeType error code. 0 means success. */ /* */ /* <Note> */ /* If your font file is in memory, or if you want to provide your */ /* own input stream object, use @FT_Attach_Stream. */ /* */ /* The meaning of the `attach' action (i.e., what really happens when */ /* the new file is read) is not fixed by FreeType itself. It really */ /* depends on the font format (and thus the font driver). */ /* */ /* Client applications are expected to know what they are doing */ /* when invoking this function. Most drivers simply do not implement */ /* file attachments. */ /* */ FT_EXPORT( FT_Error ) FT_Attach_File( FT_Face face, const char* filepathname ); /*************************************************************************/ /* */ /* <Function> */ /* FT_Attach_Stream */ /* */ /* <Description> */ /* This function is similar to @FT_Attach_File with the exception */ /* that it reads the attachment from an arbitrary stream. */ /* */ /* <InOut> */ /* face :: The target face object. */ /* */ /* <Input> */ /* parameters :: A pointer to an FT_Open_Args structure used to */ /* describe the input stream to FreeType. */ /* <Return> */ /* FreeType error code. 0 means success. */ /* */ /* <Note> */ /* The meaning of the `attach' (i.e. what really happens when the */ /* new file is read) is not fixed by FreeType itself. It really */ /* depends on the font format (and thus the font driver). */ /* */ /* Client applications are expected to know what they are doing */ /* when invoking this function. Most drivers simply do not implement */ /* file attachments. */ /* */ FT_EXPORT( FT_Error ) FT_Attach_Stream( FT_Face face, FT_Open_Args* parameters ); /*************************************************************************/ /* */ /* <Function> */ /* FT_Done_Face */ /* */ /* <Description> */ /* Discards a given face object, as well as all of its child slots */ /* and sizes. */ /* */ /* <Input> */ /* face :: A handle to a target face object. */ /* */ /* <Return> */ /* FreeType error code. 0 means success. */ /* */ FT_EXPORT( FT_Error ) FT_Done_Face( FT_Face face ); /*************************************************************************/ /* */ /* <Function> */ /* FT_Set_Char_Size */ /* */ /* <Description> */ /* Sets the character dimensions of a given face object. The */ /* `char_width' and `char_height' values are used for the width and */ /* height, respectively, expressed in 26.6 fractional points. */ /* */ /* If the horizontal or vertical resolution values are zero, a */ /* default value of 72dpi is used. Similarly, if one of the */ /* character dimensions is zero, its value is set equal to the other. */ /* */ /* <InOut> */ /* face :: A handle to a target face object. */ /* */ /* <Input> */ /* char_width :: The character width, in 26.6 fractional points. */ /* */ /* char_height :: The character height, in 26.6 fractional */ /* points. */ /* */ /* horz_resolution :: The horizontal resolution. */ /* */ /* vert_resolution :: The vertical resolution. */ /* */ /* <Return> */ /* FreeType error code. 0 means success. */ /* */ /* <Note> */ /* For BDF and PCF formats, this function uses the `PIXEL_SIZE' */ /* property of the bitmap font; the `char_width' parameter is */ /* ignored. */ /* */ FT_EXPORT( FT_Error ) FT_Set_Char_Size( FT_Face face, FT_F26Dot6 char_width, FT_F26Dot6 char_height, FT_UInt horz_resolution, FT_UInt vert_resolution ); /*************************************************************************/ /* */ /* <Function> */ /* FT_Set_Pixel_Sizes */ /* */ /* <Description> */ /* Sets the character dimensions of a given face object. The width */ /* and height are expressed in integer pixels. */ /* */ /* If one of the character dimensions is zero, its value is set equal */ /* to the other. */ /* */ /* <InOut> */ /* face :: A handle to the target face object. */ /* */ /* <Input> */ /* pixel_width :: The character width, in integer pixels. */ /* */ /* pixel_height :: The character height, in integer pixels. */ /* */ /* <Return> */ /* FreeType error code. 0 means success. */ /* */ /* <Note> */ /* The values of `pixel_width' and `pixel_height' correspond to the */ /* pixel values of the _typographic_ character size, which are NOT */ /* necessarily the same as the dimensions of the glyph `bitmap */ /* cells'. */ /* */ /* The `character size' is really the size of an abstract square */ /* called the `EM', used to design the font. However, depending */ /* on the font design, glyphs will be smaller or greater than the */ /* EM. */ /* */ /* This means that setting the pixel size to, say, 8x8 doesn't */ /* guarantee in any way that you will get glyph bitmaps that all fit */ /* within an 8x8 cell (sometimes even far from it). */ /* */ /* For bitmap fonts, `pixel_height' usually is a reliable value for */ /* the height of the bitmap cell. Drivers for bitmap font formats */ /* which contain a single bitmap strike only (BDF, PCF, FNT) ignore */ /* `pixel_width'. */ /* */ /* For BDF and PCF formats, this function uses the sum of the */ /* `FONT_ASCENT' and `FONT_DESCENT' properties of the bitmap font. */ /* */ FT_EXPORT( FT_Error ) FT_Set_Pixel_Sizes( FT_Face face, FT_UInt pixel_width, FT_UInt pixel_height ); /*************************************************************************/ /* */ /* <Function> */ /* FT_Load_Glyph */ /* */ /* <Description> */ /* A function used to load a single glyph within a given glyph slot, */ /* for a given size. */ /* */ /* <InOut> */ /* face :: A handle to the target face object where the glyph */ /* will be loaded. */ /* */ /* <Input> */ /* glyph_index :: The index of the glyph in the font file. For */ /* CID-keyed fonts (either in PS or in CFF format) */ /* this argument specifies the CID value. */ /* */ /* load_flags :: A flag indicating what to load for this glyph. The */ /* @FT_LOAD_XXX constants can be used to control the */ /* glyph loading process (e.g., whether the outline */ /* should be scaled, whether to load bitmaps or not, */ /* whether to hint the outline, etc). */ /* */ /* <Return> */ /* FreeType error code. 0 means success. */ /* */ /* <Note> */ /* If the glyph image is not a bitmap, and if the bit flag */ /* FT_LOAD_IGNORE_TRANSFORM is unset, the glyph image will be */ /* transformed with the information passed to a previous call to */ /* @FT_Set_Transform. */ /* */ /* Note that this also transforms the `face.glyph.advance' field, but */ /* *not* the values in `face.glyph.metrics'. */ /* */ FT_EXPORT( FT_Error ) FT_Load_Glyph( FT_Face face, FT_UInt glyph_index, FT_Int32 load_flags ); /*************************************************************************/ /* */ /* <Function> */ /* FT_Load_Char */ /* */ /* <Description> */ /* A function used to load a single glyph within a given glyph slot, */ /* for a given size, according to its character code. */ /* */ /* <InOut> */ /* face :: A handle to a target face object where the glyph */ /* will be loaded. */ /* */ /* <Input> */ /* char_code :: The glyph's character code, according to the */ /* current charmap used in the face. */ /* */ /* load_flags :: A flag indicating what to load for this glyph. The */ /* @FT_LOAD_XXX constants can be used to control the */ /* glyph loading process (e.g., whether the outline */ /* should be scaled, whether to load bitmaps or not, */ /* whether to hint the outline, etc). */ /* */ /* <Return> */ /* FreeType error code. 0 means success. */ /* */ /* <Note> */ /* If the face has no current charmap, or if the character code */ /* is not defined in the charmap, this function will return an */ /* error. */ /* */ /* If the glyph image is not a bitmap, and if the bit flag */ /* FT_LOAD_IGNORE_TRANSFORM is unset, the glyph image will be */ /* transformed with the information passed to a previous call to */ /* @FT_Set_Transform. */ /* */ /* Note that this also transforms the `face.glyph.advance' field, but */ /* *not* the values in `face.glyph.metrics'. */ /* */ FT_EXPORT( FT_Error ) FT_Load_Char( FT_Face face, FT_ULong char_code, FT_Int32 load_flags ); /*************************************************************************** * * @enum: * FT_LOAD_XXX * * @description: * A list of bit-field constants, used with @FT_Load_Glyph to indicate * what kind of operations to perform during glyph loading. * * @values: * FT_LOAD_DEFAULT :: * Corresponding to 0, this value is used a default glyph load. In this * case, the following will happen: * * 1. FreeType looks for a bitmap for the glyph corresponding to the * face's current size. If one is found, the function returns. The * bitmap data can be accessed from the glyph slot (see note below). * * 2. If no embedded bitmap is searched or found, FreeType looks for a * scalable outline. If one is found, it is loaded from the font * file, scaled to device pixels, then "hinted" to the pixel grid in * order to optimize it. The outline data can be accessed from the * glyph slot (see note below). * * Note that by default, the glyph loader doesn't render outlines into * bitmaps. The following flags are used to modify this default * behaviour to more specific and useful cases. * * FT_LOAD_NO_SCALE :: * Don't scale the vector outline being loaded to 26.6 fractional * pixels, but kept in font units. Note that this also disables * hinting and the loading of embedded bitmaps. You should only use it * when you want to retrieve the original glyph outlines in font units. * * FT_LOAD_NO_HINTING :: * Don't hint glyph outlines after their scaling to device pixels. * This generally generates "blurrier" glyphs in anti-aliased modes. * * This flag is ignored if @FT_LOAD_NO_SCALE is set. * * FT_LOAD_RENDER :: * Render the glyph outline immediately into a bitmap before the glyph * loader returns. By default, the glyph is rendered for the * @FT_RENDER_MODE_NORMAL mode, which corresponds to 8-bit anti-aliased * bitmaps using 256 opacity levels. You can use either * @FT_LOAD_TARGET_MONO or @FT_LOAD_MONOCHROME to render 1-bit * monochrome bitmaps. * * This flag is ignored if @FT_LOAD_NO_SCALE is set. * * FT_LOAD_NO_BITMAP :: * Don't look for bitmaps when loading the glyph. Only scalable * outlines will be loaded when available, and scaled, hinted, or * rendered depending on other bit flags. * * This does not prevent you from rendering outlines to bitmaps * with @FT_LOAD_RENDER, however. * * FT_LOAD_VERTICAL_LAYOUT :: * Prepare the glyph image for vertical text layout. This basically * means that `face.glyph.advance' will correspond to the vertical * advance height (instead of the default horizontal advance width), * and that the glyph image will be translated to match the vertical * bearings positions. * * FT_LOAD_FORCE_AUTOHINT :: * Force the use of the FreeType auto-hinter when a glyph outline is * loaded. You shouldn't need this in a typical application, since it * is mostly used to experiment with its algorithm. * * FT_LOAD_CROP_BITMAP :: * Indicates that the glyph loader should try to crop the bitmap (i.e., * remove all space around its black bits) when loading it. This is * only useful when loading embedded bitmaps in certain fonts, since * bitmaps rendered with @FT_LOAD_RENDER are always cropped by default. * * FT_LOAD_PEDANTIC :: * Indicates that the glyph loader should perform pedantic * verifications during glyph loading, rejecting invalid fonts. This * is mostly used to detect broken glyphs in fonts. By default, * FreeType tries to handle broken fonts also. * * FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH :: * Indicates that the glyph loader should ignore the global advance * width defined in the font. For historical reasons (to support * buggy CJK fonts), FreeType uses the value of the `advanceWidthMax' * field in the `htmx' table for all glyphs if the font is monospaced. * Activating this flags makes FreeType use the metric values given in * the `htmx' table. * * FT_LOAD_NO_RECURSE :: * This flag is only used internally. It merely indicates that the * glyph loader should not load composite glyphs recursively. Instead, * it should set the `num_subglyph' and `subglyphs' values of the glyph * slot accordingly, and set "glyph->format" to * @FT_GLYPH_FORMAT_COMPOSITE. * * The description of sub-glyphs is not available to client * applications for now. * * FT_LOAD_IGNORE_TRANSFORM :: * Indicates that the glyph loader should not try to transform the * loaded glyph image. This doesn't prevent scaling, hinting, or * rendering. * * FT_LOAD_MONOCHROME :: * This flag is used with @FT_LOAD_RENDER to indicate that you want * to render a 1-bit monochrome glyph bitmap from a vectorial outline. * * Note that this has no effect on the hinting algorithm used by the * glyph loader. You should better use @FT_LOAD_TARGET_MONO if you * want to render monochrome-optimized glyph images instead. * * FT_LOAD_LINEAR_DESIGN :: * Return the linearly scaled metrics expressed in original font units * instead of the default 16.16 pixel values. * * FT_LOAD_NO_AUTOHINT :: * Indicates that the auto-hinter should never be used to hint glyph * outlines. This doesn't prevent native format-specific hinters from * being used. This can be important for certain fonts where unhinted * output is better than auto-hinted one. * * FT_LOAD_TARGET_NORMAL :: * Use hinting for @FT_RENDER_MODE_NORMAL. * * FT_LOAD_TARGET_LIGHT :: * Use hinting for @FT_RENDER_MODE_LIGHT. * * FT_LOAD_TARGET_MONO :: * Use hinting for @FT_RENDER_MODE_MONO. * * FT_LOAD_TARGET_LCD :: * Use hinting for @FT_RENDER_MODE_LCD. * * FT_LOAD_TARGET_LCD_V :: * Use hinting for @FT_RENDER_MODE_LCD_V. */ #define FT_LOAD_DEFAULT 0x0 #define FT_LOAD_NO_SCALE 0x1 #define FT_LOAD_NO_HINTING 0x2 #define FT_LOAD_RENDER 0x4 #define FT_LOAD_NO_BITMAP 0x8 #define FT_LOAD_VERTICAL_LAYOUT 0x10 #define FT_LOAD_FORCE_AUTOHINT 0x20 #define FT_LOAD_CROP_BITMAP 0x40 #define FT_LOAD_PEDANTIC 0x80 #define FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH 0x200 #define FT_LOAD_NO_RECURSE 0x400 #define FT_LOAD_IGNORE_TRANSFORM 0x800 #define FT_LOAD_MONOCHROME 0x1000 #define FT_LOAD_LINEAR_DESIGN 0x2000 /* temporary hack! */ #define FT_LOAD_SBITS_ONLY 0x4000 #define FT_LOAD_NO_AUTOHINT 0x8000U /* */ #define FT_LOAD_TARGET_( x ) ( (FT_Int32)( (x) & 15 ) << 16 ) #define FT_LOAD_TARGET_MODE( x ) ( (FT_Render_Mode)( ( (x) >> 16 ) & 15 ) ) #define FT_LOAD_TARGET_NORMAL FT_LOAD_TARGET_( FT_RENDER_MODE_NORMAL ) #define FT_LOAD_TARGET_LIGHT FT_LOAD_TARGET_( FT_RENDER_MODE_LIGHT ) #define FT_LOAD_TARGET_MONO FT_LOAD_TARGET_( FT_RENDER_MODE_MONO ) #define FT_LOAD_TARGET_LCD FT_LOAD_TARGET_( FT_RENDER_MODE_LCD ) #define FT_LOAD_TARGET_LCD_V FT_LOAD_TARGET_( FT_RENDER_MODE_LCD_V ) /* */ /*************************************************************************/ /* */ /* <Function> */ /* FT_Set_Transform */ /* */ /* <Description> */ /* A function used to set the transformation that is applied to glyph */ /* images when they are loaded into a glyph slot through */ /* @FT_Load_Glyph. */ /* */ /* <InOut> */ /* face :: A handle to the source face object. */ /* */ /* <Input> */ /* matrix :: A pointer to the transformation's 2x2 matrix. Use 0 for */ /* the identity matrix. */ /* delta :: A pointer to the translation vector. Use 0 for the null */ /* vector. */ /* */ /* <Note> */ /* The transformation is only applied to scalable image formats after */ /* the glyph has been loaded. It means that hinting is unaltered by */ /* the transformation and is performed on the character size given in */ /* the last call to @FT_Set_Char_Size or @FT_Set_Pixel_Sizes. */ /* */ FT_EXPORT( void ) FT_Set_Transform( FT_Face face, FT_Matrix* matrix, FT_Vector* delta ); /*************************************************************************/ /* */ /* <Enum> */ /* FT_Render_Mode */ /* */ /* <Description> */ /* An enumeration type that lists the render modes supported by */ /* FreeType 2. Each mode corresponds to a specific type of scanline */ /* conversion performed on the outline, as well as specific */ /* hinting optimizations. */ /* */ /* For bitmap fonts the `bitmap->pixel_mode' field in the */ /* @FT_GlyphSlotRec structure gives the format of the returned */ /* bitmap. */ /* */ /* <Values> */ /* FT_RENDER_MODE_NORMAL :: */ /* This is the default render mode; it corresponds to 8-bit */ /* anti-aliased bitmaps, using 256 levels of opacity. */ /* */ /* FT_RENDER_MODE_LIGHT :: */ /* This is similar to @FT_RENDER_MODE_NORMAL -- you have to use */ /* @FT_LOAD_TARGET_LIGHT in calls to @FT_Load_Glyph to get any */ /* effect since the rendering process no longer influences the */ /* positioning of glyph outlines. */ /* */ /* The resulting glyph shapes are more similar to the original, */ /* while being a bit more fuzzy (`better shapes' instead of `better */ /* contrast', so to say. */ /* */ /* FT_RENDER_MODE_MONO :: */ /* This mode corresponds to 1-bit bitmaps. */ /* */ /* FT_RENDER_MODE_LCD :: */ /* This mode corresponds to horizontal RGB/BGR sub-pixel displays, */ /* like LCD-screens. It produces 8-bit bitmaps that are 3 times */ /* the width of the original glyph outline in pixels, and which use */ /* the @FT_PIXEL_MODE_LCD mode. */ /* */ /* FT_RENDER_MODE_LCD_V :: */ /* This mode corresponds to vertical RGB/BGR sub-pixel displays */ /* (like PDA screens, rotated LCD displays, etc.). It produces */ /* 8-bit bitmaps that are 3 times the height of the original */ /* glyph outline in pixels and use the @FT_PIXEL_MODE_LCD_V mode. */ /* */ /* <Note> */ /* The LCD-optimized glyph bitmaps produced by FT_Render_Glyph are */ /* _not filtered_ to reduce color-fringes. It is up to the caller to */ /* perform this pass. */ /* */ typedef enum FT_Render_Mode_ { FT_RENDER_MODE_NORMAL = 0, FT_RENDER_MODE_LIGHT, FT_RENDER_MODE_MONO, FT_RENDER_MODE_LCD, FT_RENDER_MODE_LCD_V, FT_RENDER_MODE_MAX } FT_Render_Mode; /*************************************************************************/ /* */ /* <Enum> */ /* ft_render_mode_xxx */ /* */ /* <Description> */ /* These constats are deprecated. Use the corresponding */ /* @FT_Render_Mode values instead. */ /* */ /* <Values> */ /* ft_render_mode_normal :: see @FT_RENDER_MODE_NORMAL */ /* ft_render_mode_mono :: see @FT_RENDER_MODE_MONO */ /* */ #define ft_render_mode_normal FT_RENDER_MODE_NORMAL #define ft_render_mode_mono FT_RENDER_MODE_MONO /*************************************************************************/ /* */ /* <Function> */ /* FT_Render_Glyph */ /* */ /* <Description> */ /* Converts a given glyph image to a bitmap. It does so by */ /* inspecting the glyph image format, find the relevant renderer, and */ /* invoke it. */ /* */ /* <InOut> */ /* slot :: A handle to the glyph slot containing the image to */ /* convert. */ /* */ /* <Input> */ /* render_mode :: This is the render mode used to render the glyph */ /* image into a bitmap. See FT_Render_Mode for a list */ /* of possible values. */ /* */ /* <Return> */ /* FreeType error code. 0 means success. */ /* */ FT_EXPORT( FT_Error ) FT_Render_Glyph( FT_GlyphSlot slot, FT_Render_Mode render_mode ); /*************************************************************************/ /* */ /* <Enum> */ /* FT_Kerning_Mode */ /* */ /* <Description> */ /* An enumeration used to specify which kerning values to return in */ /* @FT_Get_Kerning. */ /* */ /* <Values> */ /* FT_KERNING_DEFAULT :: Return scaled and grid-fitted kerning */ /* distances (value is 0). */ /* */ /* FT_KERNING_UNFITTED :: Return scaled but un-grid-fitted kerning */ /* distances. */ /* */ /* FT_KERNING_UNSCALED :: Return the kerning vector in original font */ /* units. */ /* */ typedef enum FT_Kerning_Mode_ { FT_KERNING_DEFAULT = 0, FT_KERNING_UNFITTED, FT_KERNING_UNSCALED } FT_Kerning_Mode; /*************************************************************************/ /* */ /* <Const> */ /* ft_kerning_default */ /* */ /* <Description> */ /* This constant is deprecated. Please use @FT_KERNING_DEFAULT */ /* instead. */ /* */ #define ft_kerning_default FT_KERNING_DEFAULT /*************************************************************************/ /* */ /* <Const> */ /* ft_kerning_unfitted */ /* */ /* <Description> */ /* This constant is deprecated. Please use @FT_KERNING_UNFITTED */ /* instead. */ /* */ #define ft_kerning_unfitted FT_KERNING_UNFITTED /*************************************************************************/ /* */ /* <Const> */ /* ft_kerning_unscaled */ /* */ /* <Description> */ /* This constant is deprecated. Please use @FT_KERNING_UNSCALED */ /* instead. */ /* */ #define ft_kerning_unscaled FT_KERNING_UNSCALED /*************************************************************************/ /* */ /* <Function> */ /* FT_Get_Kerning */ /* */ /* <Description> */ /* Returns the kerning vector between two glyphs of a same face. */ /* */ /* <Input> */ /* face :: A handle to a source face object. */ /* */ /* left_glyph :: The index of the left glyph in the kern pair. */ /* */ /* right_glyph :: The index of the right glyph in the kern pair. */ /* */ /* kern_mode :: See @FT_Kerning_Mode for more information. */ /* Determines the scale/dimension of the returned */ /* kerning vector. */ /* */ /* <Output> */ /* akerning :: The kerning vector. This is either in font units */ /* or in pixels (26.6 format) for scalable formats, */ /* and in pixels for fixed-sizes formats. */ /* */ /* <Return> */ /* FreeType error code. 0 means success. */ /* */ /* <Note> */ /* Only horizontal layouts (left-to-right & right-to-left) are */ /* supported by this method. Other layouts, or more sophisticated */ /* kernings, are out of the scope of this API function -- they can be */ /* implemented through format-specific interfaces. */ /* */ FT_EXPORT( FT_Error ) FT_Get_Kerning( FT_Face face, FT_UInt left_glyph, FT_UInt right_glyph, FT_UInt kern_mode, FT_Vector *akerning ); /*************************************************************************/ /* */ /* <Function> */ /* FT_Get_Glyph_Name */ /* */ /* <Description> */ /* Retrieves the ASCII name of a given glyph in a face. This only */ /* works for those faces where FT_HAS_GLYPH_NAME(face) returns true. */ /* */ /* <Input> */ /* face :: A handle to a source face object. */ /* */ /* glyph_index :: The glyph index. */ /* */ /* buffer_max :: The maximal number of bytes available in the */ /* buffer. */ /* */ /* <Output> */ /* buffer :: A pointer to a target buffer where the name will be */ /* copied to. */ /* */ /* <Return> */ /* FreeType error code. 0 means success. */ /* */ /* <Note> */ /* An error is returned if the face doesn't provide glyph names or if */ /* the glyph index is invalid. In all cases of failure, the first */ /* byte of `buffer' will be set to 0 to indicate an empty name. */ /* */ /* The glyph name is truncated to fit within the buffer if it is too */ /* long. The returned string is always zero-terminated. */ /* */ /* This function is not compiled within the library if the config */ /* macro FT_CONFIG_OPTION_NO_GLYPH_NAMES is defined in */ /* `include/freetype/config/ftoptions.h' */ /* */ FT_EXPORT( FT_Error ) FT_Get_Glyph_Name( FT_Face face, FT_UInt glyph_index, FT_Pointer buffer, FT_UInt buffer_max ); /*************************************************************************/ /* */ /* <Function> */ /* FT_Get_Postscript_Name */ /* */ /* <Description> */ /* Retrieves the ASCII Postscript name of a given face, if available. */ /* This only works with Postscript and TrueType fonts. */ /* */ /* <Input> */ /* face :: A handle to the source face object. */ /* */ /* <Return> */ /* A pointer to the face's Postscript name. NULL if unavailable. */ /* */ /* <Note> */ /* The returned pointer is owned by the face and will be destroyed */ /* with it. */ /* */ FT_EXPORT( const char* ) FT_Get_Postscript_Name( FT_Face face ); /*************************************************************************/ /* */ /* <Function> */ /* FT_Select_Charmap */ /* */ /* <Description> */ /* Selects a given charmap by its encoding tag (as listed in */ /* `freetype.h'). */ /* */ /* <InOut> */ /* face :: A handle to the source face object. */ /* */ /* <Input> */ /* encoding :: A handle to the selected charmap. */ /* */ /* <Return> */ /* FreeType error code. 0 means success. */ /* */ /* <Note> */ /* This function will return an error if no charmap in the face */ /* corresponds to the encoding queried here. */ /* */ FT_EXPORT( FT_Error ) FT_Select_Charmap( FT_Face face, FT_Encoding encoding ); /*************************************************************************/ /* */ /* <Function> */ /* FT_Set_Charmap */ /* */ /* <Description> */ /* Selects a given charmap for character code to glyph index */ /* decoding. */ /* */ /* <InOut> */ /* face :: A handle to the source face object. */ /* */ /* <Input> */ /* charmap :: A handle to the selected charmap. */ /* */ /* <Return> */ /* FreeType error code. 0 means success. */ /* */ /* <Note> */ /* This function will return an error if the charmap is not part of */ /* the face (i.e., if it is not listed in the face->charmaps[] */ /* table). */ /* */ FT_EXPORT( FT_Error ) FT_Set_Charmap( FT_Face face, FT_CharMap charmap ); /*************************************************************************/ /* */ /* @function: */ /* FT_Get_Charmap_Index */ /* */ /* @description: */ /* Retrieve index of a given charmap. */ /* */ /* @input: */ /* charmap :: A handle to a charmap. */ /* */ /* @return: */ /* The index into the array of character maps within the face to */ /* which `charmap' belongs. */ /* */ FT_EXPORT( FT_Int ) FT_Get_Charmap_Index( FT_CharMap charmap ); /*************************************************************************/ /* */ /* <Function> */ /* FT_Get_Char_Index */ /* */ /* <Description> */ /* Returns the glyph index of a given character code. This function */ /* uses a charmap object to do the translation. */ /* */ /* <Input> */ /* face :: A handle to the source face object. */ /* */ /* charcode :: The character code. */ /* */ /* <Return> */ /* The glyph index. 0 means `undefined character code'. */ /* */ /* <Note> */ /* FreeType computes its own glyph indices which are not necessarily */ /* the same as used in the font in case the font is based on glyph */ /* indices. Reason for this behaviour is to assure that index 0 is */ /* never used, representing the missing glyph. */ /* */ FT_EXPORT( FT_UInt ) FT_Get_Char_Index( FT_Face face, FT_ULong charcode ); /*************************************************************************/ /* */ /* <Function> */ /* FT_Get_First_Char */ /* */ /* <Description> */ /* This function is used to return the first character code in the */ /* current charmap of a given face. It will also return the */ /* corresponding glyph index. */ /* */ /* <Input> */ /* face :: A handle to the source face object. */ /* */ /* <Output> */ /* agindex :: Glyph index of first character code. 0 if charmap is */ /* empty. */ /* */ /* <Return> */ /* The charmap's first character code. */ /* */ /* <Note> */ /* You should use this function with @FT_Get_Next_Char to be able to */ /* parse all character codes available in a given charmap. The code */ /* should look like this: */ /* */ /* { */ /* FT_ULong charcode; */ /* FT_UInt gindex; */ /* */ /* */ /* charcode = FT_Get_First_Char( face, &gindex ); */ /* while ( gindex != 0 ) */ /* { */ /* ... do something with (charcode,gindex) pair ... */ /* */ /* charcode = FT_Get_Next_Char( face, charcode, &gindex ); */ /* } */ /* } */ /* */ /* Note that `*agindex' will be set to 0 if the charmap is empty. */ /* The result itself can be 0 in two cases: if the charmap is empty */ /* or when the value 0 is the first valid character code. */ /* */ FT_EXPORT( FT_ULong ) FT_Get_First_Char( FT_Face face, FT_UInt *agindex ); /*************************************************************************/ /* */ /* <Function> */ /* FT_Get_Next_Char */ /* */ /* <Description> */ /* This function is used to return the next character code in the */ /* current charmap of a given face following the value 'char_code', */ /* as well as the corresponding glyph index. */ /* */ /* <Input> */ /* face :: A handle to the source face object. */ /* char_code :: The starting character code. */ /* */ /* <Output> */ /* agindex :: Glyph index of first character code. 0 if charmap */ /* is empty. */ /* */ /* <Return> */ /* The charmap's next character code. */ /* */ /* <Note> */ /* You should use this function with @FT_Get_First_Char to walk */ /* through all character codes available in a given charmap. See */ /* the note for this function for a simple code example. */ /* */ /* Note that `*agindex' will be set to 0 when there are no more codes */ /* in the charmap. */ /* */ FT_EXPORT( FT_ULong ) FT_Get_Next_Char( FT_Face face, FT_ULong char_code, FT_UInt *agindex ); /*************************************************************************/ /* */ /* <Function> */ /* FT_Get_Name_Index */ /* */ /* <Description> */ /* Returns the glyph index of a given glyph name. This function uses */ /* driver specific objects to do the translation. */ /* */ /* <Input> */ /* face :: A handle to the source face object. */ /* */ /* glyph_name :: The glyph name. */ /* */ /* <Return> */ /* The glyph index. 0 means `undefined character code'. */ /* */ FT_EXPORT( FT_UInt ) FT_Get_Name_Index( FT_Face face, FT_String* glyph_name ); /*************************************************************************/ /* */ /* <Section> */ /* computations */ /* */ /* <Title> */ /* Computations */ /* */ /* <Abstract> */ /* Crunching fixed numbers and vectors. */ /* */ /* <Description> */ /* This section contains various functions used to perform */ /* computations on 16.16 fixed-float numbers or 2d vectors. */ /* */ /* <Order> */ /* FT_MulDiv */ /* FT_MulFix */ /* FT_DivFix */ /* FT_RoundFix */ /* FT_CeilFix */ /* FT_FloorFix */ /* FT_Vector_Transform */ /* FT_Matrix_Multiply */ /* FT_Matrix_Invert */ /* */ /*************************************************************************/ /*************************************************************************/ /* */ /* <Function> */ /* FT_MulDiv */ /* */ /* <Description> */ /* A very simple function used to perform the computation `(a*b)/c' */ /* with maximal accuracy (it uses a 64-bit intermediate integer */ /* whenever necessary). */ /* */ /* This function isn't necessarily as fast as some processor specific */ /* operations, but is at least completely portable. */ /* */ /* <Input> */ /* a :: The first multiplier. */ /* b :: The second multiplier. */ /* c :: The divisor. */ /* */ /* <Return> */ /* The result of `(a*b)/c'. This function never traps when trying to */ /* divide by zero; it simply returns `MaxInt' or `MinInt' depending */ /* on the signs of `a' and `b'. */ /* */ FT_EXPORT( FT_Long ) FT_MulDiv( FT_Long a, FT_Long b, FT_Long c ); /*************************************************************************/ /* */ /* <Function> */ /* FT_MulFix */ /* */ /* <Description> */ /* A very simple function used to perform the computation */ /* `(a*b)/0x10000' with maximal accuracy. Most of the time this is */ /* used to multiply a given value by a 16.16 fixed float factor. */ /* */ /* <Input> */ /* a :: The first multiplier. */ /* b :: The second multiplier. Use a 16.16 factor here whenever */ /* possible (see note below). */ /* */ /* <Return> */ /* The result of `(a*b)/0x10000'. */ /* */ /* <Note> */ /* This function has been optimized for the case where the absolute */ /* value of `a' is less than 2048, and `b' is a 16.16 scaling factor. */ /* As this happens mainly when scaling from notional units to */ /* fractional pixels in FreeType, it resulted in noticeable speed */ /* improvements between versions 2.x and 1.x. */ /* */ /* As a conclusion, always try to place a 16.16 factor as the */ /* _second_ argument of this function; this can make a great */ /* difference. */ /* */ FT_EXPORT( FT_Long ) FT_MulFix( FT_Long a, FT_Long b ); /*************************************************************************/ /* */ /* <Function> */ /* FT_DivFix */ /* */ /* <Description> */ /* A very simple function used to perform the computation */ /* `(a*0x10000)/b' with maximal accuracy. Most of the time, this is */ /* used to divide a given value by a 16.16 fixed float factor. */ /* */ /* <Input> */ /* a :: The first multiplier. */ /* b :: The second multiplier. Use a 16.16 factor here whenever */ /* possible (see note below). */ /* */ /* <Return> */ /* The result of `(a*0x10000)/b'. */ /* */ /* <Note> */ /* The optimization for FT_DivFix() is simple: If (a << 16) fits in */ /* 32 bits, then the division is computed directly. Otherwise, we */ /* use a specialized version of @FT_MulDiv. */ /* */ FT_EXPORT( FT_Long ) FT_DivFix( FT_Long a, FT_Long b ); /*************************************************************************/ /* */ /* <Function> */ /* FT_RoundFix */ /* */ /* <Description> */ /* A very simple function used to round a 16.16 fixed number. */ /* */ /* <Input> */ /* a :: The number to be rounded. */ /* */ /* <Return> */ /* The result of `(a + 0x8000) & -0x10000'. */ /* */ FT_EXPORT( FT_Fixed ) FT_RoundFix( FT_Fixed a ); /*************************************************************************/ /* */ /* <Function> */ /* FT_CeilFix */ /* */ /* <Description> */ /* A very simple function used to compute the ceiling function of a */ /* 16.16 fixed number. */ /* */ /* <Input> */ /* a :: The number for which the ceiling function is to be computed. */ /* */ /* <Return> */ /* The result of `(a + 0x10000 - 1) & -0x10000'. */ /* */ FT_EXPORT( FT_Fixed ) FT_CeilFix( FT_Fixed a ); /*************************************************************************/ /* */ /* <Function> */ /* FT_FloorFix */ /* */ /* <Description> */ /* A very simple function used to compute the floor function of a */ /* 16.16 fixed number. */ /* */ /* <Input> */ /* a :: The number for which the floor function is to be computed. */ /* */ /* <Return> */ /* The result of `a & -0x10000'. */ /* */ FT_EXPORT( FT_Fixed ) FT_FloorFix( FT_Fixed a ); /*************************************************************************/ /* */ /* <Function> */ /* FT_Vector_Transform */ /* */ /* <Description> */ /* Transforms a single vector through a 2x2 matrix. */ /* */ /* <InOut> */ /* vector :: The target vector to transform. */ /* */ /* <Input> */ /* matrix :: A pointer to the source 2x2 matrix. */ /* */ /* <Note> */ /* The result is undefined if either `vector' or `matrix' is invalid. */ /* */ FT_EXPORT( void ) FT_Vector_Transform( FT_Vector* vec, const FT_Matrix* matrix ); /* */ FT_END_HEADER #endif /* __FREETYPE_H__ */ /* END */