-/***************************************************************************/
-/* */
-/* freetype.h */
-/* */
-/* FreeType high-level API and common types (specification only). */
-/* */
-/* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007 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
-
-
- /*************************************************************************/
- /* */
- /* The `raster' component duplicates some of the declarations in */
- /* freetype.h for stand-alone use if _FREETYPE_ isn't defined. */
- /* */
- /*************************************************************************/
-
-
-#ifndef __FREETYPE_H__
-#define __FREETYPE_H__
-
-
-#include <ft2build.h>
-#include FT_CONFIG_CONFIG_H
-#include FT_ERRORS_H
-#include FT_TYPES_H
-
-
-FT_BEGIN_HEADER
-
-
-
- /*************************************************************************/
- /* */
- /* <Section> */
- /* user_allocation */
- /* */
- /* <Title> */
- /* User allocation */
- /* */
- /* <Abstract> */
- /* How client applications should allocate FreeType data structures. */
- /* */
- /* <Description> */
- /* FreeType assumes that structures allocated by the user and passed */
- /* as arguments are zeroed out except for the actual data. With */
- /* other words, it is recommended to use `calloc' (or variants of it) */
- /* instead of `malloc' for allocation. */
- /* */
- /*************************************************************************/
-
-
-
- /*************************************************************************/
- /*************************************************************************/
- /* */
- /* 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_FACE_FLAG_HINTER */
- /* */
- /* 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_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_Request_Size */
- /* FT_Select_Size */
- /* FT_Size_Request_Type */
- /* FT_Size_Request */
- /* 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_Track_Kerning */
- /* 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 has been used while loading the glyph, values */
- /* are expressed 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 metrics of a bitmap strike (i.e., a set */
- /* of glyphs for a given point size and resolution) in a bitmap font. */
- /* It is used for the `available_sizes' field of @FT_Face. */
- /* */
- /* <Fields> */
- /* height :: The vertical distance, in pixels, between two */
- /* consecutive baselines. It is always positive. */
- /* */
- /* width :: The average width, in pixels, of all glyphs in the */
- /* strike. */
- /* */
- /* size :: The nominal size of the strike in 26.6 fractional */
- /* points. This field is not very useful. */
- /* */
- /* x_ppem :: The horizontal ppem (nominal width) in 26.6 fractional */
- /* pixels. */
- /* */
- /* y_ppem :: The vertical ppem (nominal height) in 26.6 fractional */
- /* pixels. */
- /* */
- /* <Note> */
- /* Windows FNT: */
- /* The nominal size given in a FNT font is not reliable. Thus when */
- /* the driver finds it incorrect, it sets `size' to some calculated */
- /* values and sets `x_ppem' and `y_ppem' to the pixel width and */
- /* height given in the font, respectively. */
- /* */
- /* 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). */
- /* */
- /* For multi-threading applications each thread should have its own */
- /* FT_Library object. */
- /* */
- /* <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 an object used to model a face scaled to a given */
- /* character size. */
- /* */
- /* <Note> */
- /* Each @FT_Face has an _active_ @FT_Size object that is used by */
- /* functions like @FT_Load_Glyph to determine the scaling */
- /* transformation which is used to load and hint glyphs and metrics. */
- /* */
- /* You can use @FT_Set_Char_Size, @FT_Set_Pixel_Sizes, */
- /* @FT_Request_Size or even @FT_Select_Size to change the content */
- /* (i.e., the scaling values) of the active @FT_Size. */
- /* */
- /* You can use @FT_New_Size to create additional size objects for a */
- /* given @FT_Face, but they won't be used by other functions until */
- /* you activate it through @FT_Activate_Size. Only one size can be */
- /* activated at any given time per face. */
- /* */
- /* <Also> */
- /* The @FT_SizeRec structure details the publicly accessible fields */
- /* of a given size 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 character sets supported by */
- /* charmaps. Used in the @FT_Select_Charmap API function. */
- /* */
- /* <Note> */
- /* Despite the name, this enumeration lists specific character */
- /* repertories (i.e., charsets), and not text encoding methods (e.g., */
- /* UTF-8, UTF-16, GB2312_EUC, etc.). */
- /* */
- /* Because of 32-bit charcodes defined in Unicode (i.e., surrogates), */
- /* all character codes must be expressed as FT_Longs. */
- /* */
- /* 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 also reports 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 c */
- /* @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, */
- /* don't 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. */
- /* */
-#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 a */
- /* typeface in a font file. */
- /* */
- /* <Fields> */
- /* num_faces :: The number of faces in the font file. Some */
- /* font formats can have multiple faces in */
- /* a font file. */
- /* */
- /* face_index :: The index of the face in the font file. It */
- /* is set to 0 if there is only one face in */
- /* the font file. */
- /* */
- /* face_flags :: A set of bit flags that give important */
- /* information about the face; see */
- /* @FT_FACE_FLAG_XXX for the details. */
- /* */
- /* style_flags :: A set of bit flags indicating the style of */
- /* the face; see @FT_STYLE_FLAG_XXX for the */
- /* details. */
- /* */
- /* num_glyphs :: The number of glyphs in the face. If the */
- /* face is scalable and has sbits (see */
- /* `num_fixed_sizes'), it is set to the number */
- /* of outline glyphs. */
- /* */
- /* 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 and Unicode versions of this */
- /* string. Applications should use the format */
- /* specific interface to access them. */
- /* */
- /* num_fixed_sizes :: The number of bitmap strikes in the face. */
- /* Even if the face is scalable, there might */
- /* still be bitmap strikes, which are called */
- /* `sbits' in that case. */
- /* */
- /* available_sizes :: An array of @FT_Bitmap_Size for all bitmap */
- /* strikes in the face. It is set to NULL if */
- /* there is no bitmap strike. */
- /* */
- /* num_charmaps :: The number of charmaps in the face. */
- /* */
- /* charmaps :: An array of the charmaps of the face. */
- /* */
- /* 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', and `bbox.yMin' as the `minimal */
- /* descender'. 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, and 1000 for Type 1 fonts. */
- /* Only relevant for scalable formats. */
- /* */
- /* ascender :: The typographic ascender of the face, */
- /* expressed in font units. For font formats */
- /* not having this information, it is set to */
- /* `bbox.yMax'. Only relevant for scalable */
- /* formats. */
- /* */
- /* descender :: The typographic descender of the face, */
- /* expressed in font units. For font formats */
- /* not having this information, it is set to */
- /* `bbox.yMin'. Note that this field is */
- /* usually negative. Only relevant for */
- /* scalable formats. */
- /* */
- /* height :: The height is the vertical distance */
- /* between two consecutive baselines, */
- /* expressed in font units. It is always */
- /* positive. 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 is set */
- /* to `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). */
- /* */
- /* size :: The current active size for this face. */
- /* */
- /* charmap :: The current active charmap for this face. */
- /* */
- /* <Note> */
- /* Fields may be changed after a call to @FT_Attach_File or */
- /* @FT_Attach_Stream. */
- /* */
- 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 member variables (down to `underline_thickness') */
- /*# are only relevant to scalable outlines; cf. @FT_Bitmap_Size */
- /*# for bitmap fonts. */
- 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 contains outline glyphs. This doesn't */
- /* prevent bitmap strikes, i.e., a face can have both this and */
- /* and @FT_FACE_FLAG_FIXED_SIZES set. */
- /* */
- /* FT_FACE_FLAG_FIXED_SIZES :: */
- /* Indicates that the face contains bitmap strikes. See also 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. Otherwise the function always return the */
- /* vector (0,0). Note that FreeType doesn't handle kerning data */
- /* from the `GPOS' table (as present in some OpenType fonts). */
- /* */
- /* 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. */
- /* */
- /* FT_FACE_FLAG_HINTER :: */
- /* Set if the font driver has a hinting machine of its own. For */
- /* example, with TrueType fonts, it makes sense to use data from */
- /* the SFNT `gasp' table only if the native TrueType hinting engine */
- /* (with the bytecode interpreter) is available and active. */
- /* */
-#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 )
-#define FT_FACE_FLAG_HINTER ( 1L << 11 )
-
- /* */
-
-
- /*************************************************************************
- *
- * @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, Type 42, CID, OpenType/CFF,
- * and PFR 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.
- *
- */
-#define FT_HAS_FAST_GLYPHS( face ) 0
-
-
- /*************************************************************************
- *
- * @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 gives the metrics of a size object. */
- /* */
- /* <Fields> */
- /* x_ppem :: The width of the scaled EM square in pixels, hence */
- /* the term `ppem' (pixels per EM). It is also */
- /* referred to as `nominal width'. */
- /* */
- /* y_ppem :: The height of the scaled EM square in pixels, */
- /* hence the term `ppem' (pixels per EM). It is also */
- /* referred to as `nominal height'. */
- /* */
- /* x_scale :: A 16.16 fractional scaling value used to convert */
- /* horizontal metrics from font units to 26.6 */
- /* fractional pixels. Only relevant for scalable */
- /* font formats. */
- /* */
- /* y_scale :: A 16.16 fractional scaling value used to convert */
- /* vertical metrics from font units to 26.6 */
- /* fractional pixels. Only relevant for scalable */
- /* font formats. */
- /* */
- /* ascender :: The ascender in 26.6 fractional pixels. See */
- /* @FT_FaceRec for the details. */
- /* */
- /* descender :: The descender in 26.6 fractional pixels. See */
- /* @FT_FaceRec for the details. */
- /* */
- /* height :: The height in 26.6 fractional pixels. See */
- /* @FT_FaceRec for the details. */
- /* */
- /* max_advance :: The maximal advance width in 26.6 fractional */
- /* pixels. See @FT_FaceRec for the details. */
- /* */
- /* <Note> */
- /* The scaling values, if relevant, are determined first during a */
- /* size changing operation. The remaining fields are then set by the */
- /* driver. For scalable formats, they are usually set to scaled */
- /* values of the corresponding fields in @FT_FaceRec. */
- /* */
- /* Note that due to glyph hinting, these values might not be exact */
- /* for certain fonts. Thus they must be treated as unreliable */
- /* with an error margin of at least one pixel! */
- /* */
- /* Indeed, the only way to get the exact metrics is to render _all_ */
- /* glyphs. As this would be a definite performance hit, it is up to */
- /* client applications to perform such computations. */
- /* */
- /* The FT_Size_Metrics structure is valid for bitmap fonts also. */
- /* */
- 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; /* scaling values used to convert font */
- FT_Fixed y_scale; /* units to 26.6 fractional pixels */
-
- 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 a face */
- /* object at a given size. */
- /* */
- /* <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. */
- /* */
- /* You can however retrieve subglyph information with */
- /* @FT_Get_SubGlyph_Info. */
- /* */
- 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 in */
- /* outline or bitmap format. */
- /* */
- /* <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 :: The advance width of the unhinted glyph. */
- /* Its value is expressed in 16.16 fractional */
- /* pixels, unless @FT_LOAD_LINEAR_DESIGN is set */
- /* when loading the glyph. This field can be */
- /* important to perform correct WYSIWYG layout. */
- /* Only relevant for outline glyphs. */
- /* */
- /* linearVertAdvance :: The advance height of the unhinted glyph. */
- /* Its value is expressed in 16.16 fractional */
- /* pixels, unless @FT_LOAD_LINEAR_DESIGN is set */
- /* when loading the glyph. This field can be */
- /* important to perform correct WYSIWYG layout. */
- /* Only relevant for outline glyphs. */
- /* */
- /* 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, or */
- /* @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. Once a glyph is */
- /* loaded, `outline' can be transformed, */
- /* distorted, embolded, etc. However, it must */
- /* not be freed. */
- /* */
- /* 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 */
- /* applications. Note that the application */
- /* needs 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., an outline glyph 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> */
- /* Initialize 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_Done_FreeType */
- /* */
- /* <Description> */
- /* Destroy a given FreeType library object and all of its children, */
- /* 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' and `params' fields. */
- /* */
- /* 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 four-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 or */
- /* 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 tries 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'. */
- /* The data are are not copied, and the client is responsible for */
- /* releasing and destroying them _after_ the corresponding call to */
- /* @FT_Done_Face. */
- /* */
- /* 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 only tries 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' is used. They are ignored otherwise. */
- /* */
- /* Ideally, both the `pathname' and `params' fields should be tagged */
- /* as `const'; this is missing for API backwards compatibility. With */
- /* other words, applications should treat them as read-only. */
- /* */
- 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> */
- /* This function calls @FT_Open_Face to open a font by its pathname. */
- /* */
- /* <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 font. The first */
- /* face has index 0. */
- /* */
- /* <Output> */
- /* aface :: A handle to a new face object. If `face_index' is */
- /* greater than or equal to zero, it must be non-NULL. */
- /* See @FT_Open_Face for more details. */
- /* */
- /* <Return> */
- /* FreeType error code. 0 means success. */
- /* */
- 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> */
- /* This function calls @FT_Open_Face to open a font which has been */
- /* 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 font. The first */
- /* face has index 0. */
- /* */
- /* <Output> */
- /* aface :: A handle to a new face object. If `face_index' is */
- /* greater than or equal to zero, it must be non-NULL. */
- /* See @FT_Open_Face for more details. */
- /* */
- /* <Return> */
- /* FreeType error code. 0 means success. */
- /* */
- /* <Note> */
- /* You must not deallocate the memory before calling @FT_Done_Face. */
- /* */
- 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> */
- /* Create a face object from a given resource described by */
- /* @FT_Open_Args. */
- /* */
- /* <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 font. The first */
- /* face has index 0. */
- /* */
- /* <Output> */
- /* aface :: A handle to a new face object. If `face_index' is */
- /* greater than or equal to zero, it must be non-NULL. */
- /* See note below. */
- /* */
- /* <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 quickly check whether the font */
- /* format of a given font resource is supported by FreeType. If the */
- /* `face_index' field is negative, the function's return value is 0 */
- /* if the font format is recognized, or non-zero otherwise; */
- /* the function returns a more or less empty face handle in `*aface' */
- /* (if `aface' isn't NULL). The only useful field in this special */
- /* case is `face->num_faces' which gives the number of faces within */
- /* the font file. After examination, the returned @FT_Face structure */
- /* should be deallocated with a call to @FT_Done_Face. */
- /* */
- /* Each new face object created with this function also owns a */
- /* default @FT_Size object, accessible as `face->size'. */
- /* */
- 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> */
- /* This function calls @FT_Attach_Stream to attach a file. */
- /* */
- /* <InOut> */
- /* face :: The target face object. */
- /* */
- /* <Input> */
- /* filepathname :: The pathname. */
- /* */
- /* <Return> */
- /* FreeType error code. 0 means success. */
- /* */
- FT_EXPORT( FT_Error )
- FT_Attach_File( FT_Face face,
- const char* filepathname );
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* FT_Attach_Stream */
- /* */
- /* <Description> */
- /* `Attach' data to a face object. Normally, this is used to read */
- /* additional information for the face object. For example, you can */
- /* attach an AFM file that comes with a Type 1 font to get the */
- /* kerning values and other metrics. */
- /* */
- /* <InOut> */
- /* face :: The target face object. */
- /* */
- /* <Input> */
- /* parameters :: A pointer to @FT_Open_Args which must be filled by */
- /* the caller. */
- /* */
- /* <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> */
- /* Discard 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_Select_Size */
- /* */
- /* <Description> */
- /* Select a bitmap strike. */
- /* */
- /* <InOut> */
- /* face :: A handle to a target face object. */
- /* */
- /* <Input> */
- /* strike_index :: The index of the bitmap strike in the */
- /* `available_sizes' field of @FT_FaceRec structure. */
- /* */
- /* <Return> */
- /* FreeType error code. 0 means success. */
- /* */
- FT_EXPORT( FT_Error )
- FT_Select_Size( FT_Face face,
- FT_Int strike_index );
-
-
- /*************************************************************************/
- /* */
- /* <Enum> */
- /* FT_Size_Request_Type */
- /* */
- /* <Description> */
- /* An enumeration type that lists the supported size request types. */
- /* */
- /* <Values> */
- /* FT_SIZE_REQUEST_TYPE_NOMINAL :: */
- /* The nominal size. The `units_per_EM' field of @FT_FaceRec is */
- /* used to determine both scaling values. */
- /* */
- /* FT_SIZE_REQUEST_TYPE_REAL_DIM :: */
- /* The real dimension. The sum of the the `Ascender' and (minus */
- /* of) the `Descender' fields of @FT_FaceRec are used to determine */
- /* both scaling values. */
- /* */
- /* FT_SIZE_REQUEST_TYPE_BBOX :: */
- /* The font bounding box. The width and height of the `bbox' field */
- /* of @FT_FaceRec are used to determine the horizontal and vertical */
- /* scaling value, respectively. */
- /* */
- /* FT_SIZE_REQUEST_TYPE_CELL :: */
- /* The `max_advance_width' field of @FT_FaceRec is used to */
- /* determine the horizontal scaling value; the vertical scaling */
- /* value is determined the same way as */
- /* @FT_SIZE_REQUEST_TYPE_REAL_DIM does. Finally, both scaling */
- /* values are set to the smaller one. This type is useful if you */
- /* want to specify the font size for, say, a window of a given */
- /* dimension and 80x24 cells. */
- /* */
- /* FT_SIZE_REQUEST_TYPE_SCALES :: */
- /* Specify the scaling values directly. */
- /* */
- /* <Note> */
- /* The above descriptions only apply to scalable formats. For bitmap */
- /* formats, the behaviour is up to the driver. */
- /* */
- /* See the note section of @FT_Size_Metrics if you wonder how size */
- /* requesting relates to scaling values. */
- /* */
- typedef enum FT_Size_Request_Type_
- {
- FT_SIZE_REQUEST_TYPE_NOMINAL,
- FT_SIZE_REQUEST_TYPE_REAL_DIM,
- FT_SIZE_REQUEST_TYPE_BBOX,
- FT_SIZE_REQUEST_TYPE_CELL,
- FT_SIZE_REQUEST_TYPE_SCALES,
-
- FT_SIZE_REQUEST_TYPE_MAX
-
- } FT_Size_Request_Type;
-
-
- /*************************************************************************/
- /* */
- /* <Struct> */
- /* FT_Size_RequestRec */
- /* */
- /* <Description> */
- /* A structure used to model a size request. */
- /* */
- /* <Fields> */
- /* type :: See @FT_Size_Request_Type. */
- /* */
- /* width :: The desired width. */
- /* */
- /* height :: The desired height. */
- /* */
- /* horiResolution :: The horizontal resolution. If set to zero, */
- /* `width' is treated as a 26.6 fractional pixel */
- /* value. */
- /* */
- /* vertResolution :: The vertical resolution. If set to zero, */
- /* `height' is treated as a 26.6 fractional pixel */
- /* value. */
- /* */
- /* <Note> */
- /* If `width' is zero, then the horizontal scaling value is set */
- /* equal to the vertical scaling value, and vice versa. */
- /* */
- typedef struct FT_Size_RequestRec_
- {
- FT_Size_Request_Type type;
- FT_Long width;
- FT_Long height;
- FT_UInt horiResolution;
- FT_UInt vertResolution;
-
- } FT_Size_RequestRec, *FT_Size_Request;
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* FT_Request_Size */
- /* */
- /* <Description> */
- /* Resize the scale of the active @FT_Size object in a face. */
- /* */
- /* <InOut> */
- /* face :: A handle to a target face object. */
- /* */
- /* <Input> */
- /* req :: A pointer to a @FT_Size_RequestRec. */
- /* */
- /* <Return> */
- /* FreeType error code. 0 means success. */
- /* */
- /* <Note> */
- /* Although drivers may select the bitmap strike matching the */
- /* request, you should not rely on this if you intend to select a */
- /* particular bitmap strike. Use @FT_Select_Size instead in that */
- /* case. */
- /* */
- FT_EXPORT( FT_Error )
- FT_Request_Size( FT_Face face,
- FT_Size_Request req );
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* FT_Set_Char_Size */
- /* */
- /* <Description> */
- /* This function calls @FT_Request_Size to request the nominal size */
- /* (in points). */
- /* */
- /* <InOut> */
- /* face :: A handle to a target face object. */
- /* */
- /* <Input> */
- /* char_width :: The nominal width, in 26.6 fractional points. */
- /* */
- /* char_height :: The nominal height, in 26.6 fractional points. */
- /* */
- /* horz_resolution :: The horizontal resolution in dpi. */
- /* */
- /* vert_resolution :: The vertical resolution in dpi. */
- /* */
- /* <Return> */
- /* FreeType error code. 0 means success. */
- /* */
- /* <Note> */
- /* If either the character width or height is zero, it is set equal */
- /* to the other value. */
- /* */
- /* If either the horizontal or vertical resolution is zero, it is set */
- /* equal to the other value. */
- /* */
- /* A character width or height smaller than 1pt is set to 1pt; if */
- /* both resolution values are zero, they are set to 72dpi. */
- /* */
-
- 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> */
- /* This function calls @FT_Request_Size to request the nominal size */
- /* (in pixels). */
- /* */
- /* <InOut> */
- /* face :: A handle to the target face object. */
- /* */
- /* <Input> */
- /* pixel_width :: The nominal width, in pixels. */
- /* */
- /* pixel_height :: The nominal height, in pixels. */
- /* */
- /* <Return> */
- /* FreeType error code. 0 means success. */
- /* */
- 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 into the glyph slot of a */
- /* face object. */
- /* */
- /* <InOut> */
- /* face :: A handle to the target face object where the glyph */
- /* is 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> */
- /* The loaded glyph may be transformed. See @FT_Set_Transform for */
- /* the details. */
- /* */
- 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 into the glyph slot of a */
- /* face object, according to its character code. */
- /* */
- /* <InOut> */
- /* face :: A handle to a target face object where the glyph */
- /* is 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> */
- /* This function simply calls @FT_Get_Char_Index and @FT_Load_Glyph. */
- /* */
- 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 as the default glyph load
- * operation. In this case, the following happens:
- *
- * 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 outline glyph loaded, but keep it in font units.
- *
- * This flag implies @FT_LOAD_NO_HINTING and @FT_LOAD_NO_BITMAP, and
- * unsets @FT_LOAD_RENDER.
- *
- * FT_LOAD_NO_HINTING ::
- * Disable hinting. This generally generates `blurrier' bitmap glyph
- * when the glyph is rendered in any of the anti-aliased modes. See
- * also the note below.
- *
- * This flag is implied by @FT_LOAD_NO_SCALE.
- *
- * FT_LOAD_RENDER ::
- * Call @FT_Render_Glyph after the glyph is loaded. By default, the
- * glyph is rendered in @FT_RENDER_MODE_NORMAL mode. This can be
- * overridden by @FT_LOAD_TARGET_XXX or @FT_LOAD_MONOCHROME.
- *
- * This flag is unset by @FT_LOAD_NO_SCALE.
- *
- * FT_LOAD_NO_BITMAP ::
- * Ignore bitmap strikes when loading. Bitmap-only fonts ignore this
- * flag.
- *
- * @FT_LOAD_NO_SCALE always sets this flag.
- *
- * FT_LOAD_VERTICAL_LAYOUT ::
- * Load the glyph for vertical text layout. _Don't_ use it as it is
- * problematic currently.
- *
- * FT_LOAD_FORCE_AUTOHINT ::
- * Indicates that the auto-hinter is preferred over the font's native
- * hinter. See also the note below.
- *
- * FT_LOAD_CROP_BITMAP ::
- * Indicates that the font driver should crop the loaded bitmap glyph
- * (i.e., remove all space around its black bits). Not all drivers
- * implement this.
- *
- * FT_LOAD_PEDANTIC ::
- * Indicates that the font driver should perform pedantic verifications
- * during glyph loading. 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 font driver should ignore the global advance
- * width defined in the font. By default, that value is used as the
- * advance width for all glyphs when the face has
- * @FT_FACE_FLAG_FIXED_WIDTH set.
- *
- * This flag exists for historical reasons (to support buggy CJK
- * fonts).
- *
- * FT_LOAD_NO_RECURSE ::
- * This flag is only used internally. It merely indicates that the
- * font driver 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.
- *
- * This flag implies @FT_LOAD_NO_SCALE and @FT_LOAD_IGNORE_TRANSFORM.
- *
- * FT_LOAD_IGNORE_TRANSFORM ::
- * Indicates that the transform matrix set by @FT_Set_Transform should
- * be ignored.
- *
- * FT_LOAD_MONOCHROME ::
- * This flag is used with @FT_LOAD_RENDER to indicate that you want to
- * render an outline glyph to a 1-bit monochrome bitmap glyph, with
- * 8 pixels packed into each byte of the bitmap data.
- *
- * Note that this has no effect on the hinting algorithm used. You
- * should use @FT_LOAD_TARGET_MONO instead so that the
- * monochrome-optimized hinting algorithm is used.
- *
- * FT_LOAD_LINEAR_DESIGN ::
- * Indicates that the `linearHoriAdvance' and `linearVertAdvance'
- * fields of @FT_GlyphSlotRec should be kept in font units. See
- * @FT_GlyphSlotRec for details.
- *
- * FT_LOAD_NO_AUTOHINT ::
- * Disable auto-hinter. See also the note below.
- *
- * @note:
- * By default, hinting is enabled and the font's native hinter (see
- * @FT_FACE_FLAG_HINTER) is preferred over the auto-hinter. You can
- * disable hinting by setting @FT_LOAD_NO_HINTING or change the
- * precedence by setting @FT_LOAD_FORCE_AUTOHINT. You can also set
- * @FT_LOAD_NO_AUTOHINT in case you don't want the auto-hinter to be
- * used at all.
- *
- * Besides deciding which hinter to use, you can also decide which
- * hinting algorithm to use. See @FT_LOAD_TARGET_XXX for details.
- */
-#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
-
- /* */
-
-
- /**************************************************************************
- *
- * @enum:
- * FT_LOAD_TARGET_XXX
- *
- * @description:
- * A list of values that are used to select a specific hinting algorithm
- * to use by the hinter. You should OR one of these values to your
- * `load_flags' when calling @FT_Load_Glyph.
- *
- * Note that font's native hinters may ignore the hinting algorithm you
- * have specified (e.g., the TrueType bytecode interpreter). You can set
- * @FT_LOAD_FORCE_AUTOHINT to ensure that the auto-hinter is used.
- *
- * Also note that @FT_LOAD_TARGET_LIGHT is an exception, in that it
- * always implies @FT_LOAD_FORCE_AUTOHINT.
- *
- * @values:
- * FT_LOAD_TARGET_NORMAL ::
- * This corresponds to the default hinting algorithm, optimized for
- * standard gray-level rendering. For monochrome output, use
- * @FT_LOAD_TARGET_MONO instead.
- *
- * FT_LOAD_TARGET_LIGHT ::
- * A lighter hinting algorithm for non-monochrome modes. Many
- * generated glyphs are more fuzzy but better resemble its original
- * shape. A bit like rendering on Mac OS X.
- *
- * As a special exception, this target implies @FT_LOAD_FORCE_AUTOHINT.
- *
- * FT_LOAD_TARGET_MONO ::
- * Strong hinting algorithm that should only be used for monochrome
- * output. The result is probably unpleasant if the glyph is rendered
- * in non-monochrome modes.
- *
- * FT_LOAD_TARGET_LCD ::
- * A variant of @FT_LOAD_TARGET_NORMAL optimized for horizontally
- * decimated LCD displays.
- *
- * FT_LOAD_TARGET_LCD_V ::
- * A variant of @FT_LOAD_TARGET_NORMAL optimized for vertically
- * decimated LCD displays.
- *
- * @note:
- * You should use only _one_ of the FT_LOAD_TARGET_XXX values in your
- * `load_flags'. They can't be ORed.
- *
- * If @FT_LOAD_RENDER is also set, the glyph is rendered in the
- * corresponding mode (i.e., the mode which matches the used algorithm
- * best) unless @FT_LOAD_MONOCHROME is set.
- *
- * You can use a hinting algorithm that doesn't correspond to the same
- * rendering mode. As an example, it is possible to use the `light'
- * hinting algorithm and have the results rendered in horizontal LCD
- * pixel mode, with code like
- *
- * {
- * FT_Load_Glyph( face, glyph_index,
- * load_flags | FT_LOAD_TARGET_LIGHT );
- *
- * FT_Render_Glyph( face->glyph, FT_RENDER_MODE_LCD );
- * }
- */
-
-#define FT_LOAD_TARGET_( x ) ( (FT_Int32)( (x) & 15 ) << 16 )
-
-#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 )
-
-
- /*
- * @macro:
- * FT_LOAD_TARGET_MODE
- *
- * @description:
- * Return the @FT_Render_Mode corresponding to a given
- * @FT_LOAD_TARGET_XXX value.
- */
-
-#define FT_LOAD_TARGET_MODE( x ) ( (FT_Render_Mode)( ( (x) >> 16 ) & 15 ) )
-
- /* */
-
-
- /*************************************************************************/
- /* */
- /* <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. */
- /* */
- /* Note that this also transforms the `face.glyph.advance' field, but */
- /* *not* the values in `face.glyph.metrics'. */
- /* */
- 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. */
- /* */
- /* 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 equivalent to @FT_RENDER_MODE_NORMAL. It is only */
- /* defined as a separate value because render modes are also used */
- /* indirectly to define hinting algorithm selectors. See */
- /* @FT_LOAD_TARGET_XXX for details. */
- /* */
- /* FT_RENDER_MODE_MONO :: */
- /* This mode corresponds to 1-bit bitmaps. */
- /* */
- /* FT_RENDER_MODE_LCD :: */
- /* This mode corresponds to horizontal RGB and 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 and 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 constants 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> */
- /* Convert a given glyph image to a bitmap. It does so by inspecting */
- /* the glyph image format, finding the relevant renderer, and */
- /* invoking 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> */
- /* Return 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 and 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_Track_Kerning */
- /* */
- /* <Description> */
- /* Return the track kerning for a given face object at a given size. */
- /* */
- /* <Input> */
- /* face :: A handle to a source face object. */
- /* */
- /* point_size :: The point size in 16.16 fractional points. */
- /* */
- /* degree :: The degree of tightness. */
- /* */
- /* <Output> */
- /* akerning :: The kerning in 16.16 fractional points. */
- /* */
- /* <Return> */
- /* FreeType error code. 0 means success. */
- /* */
- FT_EXPORT( FT_Error )
- FT_Get_Track_Kerning( FT_Face face,
- FT_Fixed point_size,
- FT_Int degree,
- FT_Fixed* akerning );
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* FT_Get_Glyph_Name */
- /* */
- /* <Description> */
- /* Retrieve the ASCII name of a given glyph in a face. This only */
- /* works for those faces where @FT_HAS_GLYPH_NAMES(face) returns 1. */
- /* */
- /* <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 is */
- /* 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' is 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> */
- /* Retrieve 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 is destroyed with */
- /* it. */
- /* */
- FT_EXPORT( const char* )
- FT_Get_Postscript_Name( FT_Face face );
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* FT_Select_Charmap */
- /* */
- /* <Description> */
- /* Select 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 encoding. */
- /* */
- /* <Return> */
- /* FreeType error code. 0 means success. */
- /* */
- /* <Note> */
- /* This function returns an error if no charmap in the face */
- /* corresponds to the encoding queried here. */
- /* */
- /* Because many fonts contain more than a single cmap for Unicode */
- /* encoding, this function has some special code to select the one */
- /* which covers Unicode best. It is thus preferable to */
- /* @FT_Set_Charmap in this case. */
- /* */
- FT_EXPORT( FT_Error )
- FT_Select_Charmap( FT_Face face,
- FT_Encoding encoding );
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* FT_Set_Charmap */
- /* */
- /* <Description> */
- /* Select a given charmap for character code to glyph index mapping. */
- /* */
- /* <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 returns 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> */
- /* Return the glyph index of a given character code. This function */
- /* uses a charmap object to do the mapping. */
- /* */
- /* <Input> */
- /* face :: A handle to the source face object. */
- /* */
- /* charcode :: The character code. */
- /* */
- /* <Return> */
- /* The glyph index. 0 means `undefined character code'. */
- /* */
- /* <Note> */
- /* If you use FreeType to manipulate the contents of font files */
- /* directly, be aware that the glyph index returned by this function */
- /* doesn't always correspond to the internal indices used within */
- /* the file. This is done to ensure that value 0 always corresponds */
- /* to 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 also returns 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' is 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 */
- /* over all character codes available in a given charmap. See the */
- /* note for this function for a simple code example. */
- /* */
- /* Note that `*agindex' is 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> */
- /* Return 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 );
-
-
- /*************************************************************************
- *
- * @macro:
- * FT_SUBGLYPH_FLAG_XXX
- *
- * @description:
- * A list of constants used to describe subglyphs. Please refer to the
- * TrueType specification for the meaning of the various flags.
- *
- * @values:
- * FT_SUBGLYPH_FLAG_ARGS_ARE_WORDS ::
- * FT_SUBGLYPH_FLAG_ARGS_ARE_XY_VALUES ::
- * FT_SUBGLYPH_FLAG_ROUND_XY_TO_GRID ::
- * FT_SUBGLYPH_FLAG_SCALE ::
- * FT_SUBGLYPH_FLAG_XY_SCALE ::
- * FT_SUBGLYPH_FLAG_2X2 ::
- * FT_SUBGLYPH_FLAG_USE_MY_METRICS ::
- *
- */
-#define FT_SUBGLYPH_FLAG_ARGS_ARE_WORDS 1
-#define FT_SUBGLYPH_FLAG_ARGS_ARE_XY_VALUES 2
-#define FT_SUBGLYPH_FLAG_ROUND_XY_TO_GRID 4
-#define FT_SUBGLYPH_FLAG_SCALE 8
-#define FT_SUBGLYPH_FLAG_XY_SCALE 0x40
-#define FT_SUBGLYPH_FLAG_2X2 0x80
-#define FT_SUBGLYPH_FLAG_USE_MY_METRICS 0x200
-
-
- /*************************************************************************
- *
- * @func:
- * FT_Get_SubGlyph_Info
- *
- * @description:
- * Retrieve a description of a given subglyph. Only use it if
- * `glyph->format' is @FT_GLYPH_FORMAT_COMPOSITE, or an error is
- * returned.
- *
- * @input:
- * glyph ::
- * The source glyph slot.
- *
- * sub_index ::
- * The index of subglyph. Must be less than `glyph->num_subglyphs'.
- *
- * @output:
- * p_index ::
- * The glyph index of the subglyph.
- *
- * p_flags ::
- * The subglyph flags, see @FT_SUBGLYPH_FLAG_XXX.
- *
- * p_arg1 ::
- * The subglyph's first argument (if any).
- *
- * p_arg2 ::
- * The subglyph's second argument (if any).
- *
- * p_transform ::
- * The subglyph transformation (if any).
- *
- * @return:
- * FreeType error code. 0 means success.
- *
- * @note:
- * The values of `*p_arg1', `*p_arg2', and `*p_transform' must be
- * interpreted depending on the flags returned in `*p_flags'. See the
- * TrueType specification for details.
- *
- */
- FT_EXPORT( FT_Error )
- FT_Get_SubGlyph_Info( FT_GlyphSlot glyph,
- FT_UInt sub_index,
- FT_Int *p_index,
- FT_UInt *p_flags,
- FT_Int *p_arg1,
- FT_Int *p_arg2,
- FT_Matrix *p_transform );
-
-
- /*************************************************************************/
- /* */
- /* <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> */
- /* Transform 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 );
-
-
- /*************************************************************************/
- /* */
- /* <Section> */
- /* version */
- /* */
- /* <Title> */
- /* FreeType Version */
- /* */
- /* <Abstract> */
- /* Functions and macros related to FreeType versions. */
- /* */
- /* <Description> */
- /* Note that those functions and macros are of limited use because */
- /* even a new release of FreeType with only documentation changes */
- /* increases the version number. */
- /* */
- /*************************************************************************/
-
-
- /*************************************************************************
- *
- * @enum:
- * FREETYPE_XXX
- *
- * @description:
- * These three macros identify the FreeType source code version.
- * Use @FT_Library_Version to access them at runtime.
- *
- * @values:
- * FREETYPE_MAJOR :: The major version number.
- * FREETYPE_MINOR :: The minor version number.
- * FREETYPE_PATCH :: The patch level.
- *
- * @note:
- * The version number of FreeType if built as a dynamic link library
- * with the `libtool' package is _not_ controlled by these three
- * macros.
- */
-#define FREETYPE_MAJOR 2
-#define FREETYPE_MINOR 3
-#define FREETYPE_PATCH 5
-
-
- /*************************************************************************/
- /* */
- /* <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 @FREETYPE_MAJOR, @FREETYPE_MINOR, and */
- /* @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_Face_CheckTrueTypePatents */
- /* */
- /* <Description> */
- /* Parse all bytecode instructions of a TrueType font file to check */
- /* whether any of the patented opcodes are used. This is only useful */
- /* if you want to be able to use the unpatented hinter with */
- /* fonts that do *not* use these opcodes. */
- /* */
- /* Note that this function parses *all* glyph instructions in the */
- /* font file, which may be slow. */
- /* */
- /* <Input> */
- /* face :: A face handle. */
- /* */
- /* <Return> */
- /* 1 if this is a TrueType font that uses one of the patented */
- /* opcodes, 0 otherwise. */
- /* */
- /* <Since> */
- /* 2.3.5 */
- /* */
- FT_EXPORT( FT_Bool )
- FT_Face_CheckTrueTypePatents( FT_Face face );
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* FT_Face_SetUnpatentedHinting */
- /* */
- /* <Description> */
- /* Enable or disable the unpatented hinter for a given face. */
- /* Only enable it if you have determined that the face doesn't */
- /* use any patented opcodes (see @FT_Face_CheckTrueTypePatents). */
- /* */
- /* <Input> */
- /* face :: A face handle. */
- /* */
- /* value :: New boolean setting. */
- /* */
- /* <Return> */
- /* The old setting value. This will always be false if this is not */
- /* a SFNT font, or if the unpatented hinter is not compiled in this */
- /* instance of the library. */
- /* */
- /* <Since> */
- /* 2.3.5 */
- /* */
- FT_EXPORT( FT_Bool )
- FT_Face_SetUnpatentedHinting( FT_Face face,
- FT_Bool value );
-
- /* */
-
-
-FT_END_HEADER
-
-#endif /* __FREETYPE_H__ */
-
-
-/* END */
+/***************************************************************************/\r
+/* */\r
+/* freetype.h */\r
+/* */\r
+/* FreeType high-level API and common types (specification only). */\r
+/* */\r
+/* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007 by */\r
+/* David Turner, Robert Wilhelm, and Werner Lemberg. */\r
+/* */\r
+/* This file is part of the FreeType project, and may only be used, */\r
+/* modified, and distributed under the terms of the FreeType project */\r
+/* license, LICENSE.TXT. By continuing to use, modify, or distribute */\r
+/* this file you indicate that you have read the license and */\r
+/* understand and accept it fully. */\r
+/* */\r
+/***************************************************************************/\r
+\r
+\r
+#ifndef FT_FREETYPE_H\r
+#error "`ft2build.h' hasn't been included yet!"\r
+#error "Please always use macros to include FreeType header files."\r
+#error "Example:"\r
+#error " #include <ft2build.h>"\r
+#error " #include FT_FREETYPE_H"\r
+#endif\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* The `raster' component duplicates some of the declarations in */\r
+ /* freetype.h for stand-alone use if _FREETYPE_ isn't defined. */\r
+ /* */\r
+ /*************************************************************************/\r
+\r
+\r
+#ifndef __FREETYPE_H__\r
+#define __FREETYPE_H__\r
+\r
+\r
+#include <ft2build.h>\r
+#include FT_CONFIG_CONFIG_H\r
+#include FT_ERRORS_H\r
+#include FT_TYPES_H\r
+\r
+\r
+FT_BEGIN_HEADER\r
+\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Section> */\r
+ /* user_allocation */\r
+ /* */\r
+ /* <Title> */\r
+ /* User allocation */\r
+ /* */\r
+ /* <Abstract> */\r
+ /* How client applications should allocate FreeType data structures. */\r
+ /* */\r
+ /* <Description> */\r
+ /* FreeType assumes that structures allocated by the user and passed */\r
+ /* as arguments are zeroed out except for the actual data. With */\r
+ /* other words, it is recommended to use `calloc' (or variants of it) */\r
+ /* instead of `malloc' for allocation. */\r
+ /* */\r
+ /*************************************************************************/\r
+\r
+\r
+\r
+ /*************************************************************************/\r
+ /*************************************************************************/\r
+ /* */\r
+ /* B A S I C T Y P E S */\r
+ /* */\r
+ /*************************************************************************/\r
+ /*************************************************************************/\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Section> */\r
+ /* base_interface */\r
+ /* */\r
+ /* <Title> */\r
+ /* Base Interface */\r
+ /* */\r
+ /* <Abstract> */\r
+ /* The FreeType 2 base font interface. */\r
+ /* */\r
+ /* <Description> */\r
+ /* This section describes the public high-level API of FreeType 2. */\r
+ /* */\r
+ /* <Order> */\r
+ /* FT_Library */\r
+ /* FT_Face */\r
+ /* FT_Size */\r
+ /* FT_GlyphSlot */\r
+ /* FT_CharMap */\r
+ /* FT_Encoding */\r
+ /* */\r
+ /* FT_FaceRec */\r
+ /* */\r
+ /* FT_FACE_FLAG_SCALABLE */\r
+ /* FT_FACE_FLAG_FIXED_SIZES */\r
+ /* FT_FACE_FLAG_FIXED_WIDTH */\r
+ /* FT_FACE_FLAG_HORIZONTAL */\r
+ /* FT_FACE_FLAG_VERTICAL */\r
+ /* FT_FACE_FLAG_SFNT */\r
+ /* FT_FACE_FLAG_KERNING */\r
+ /* FT_FACE_FLAG_MULTIPLE_MASTERS */\r
+ /* FT_FACE_FLAG_GLYPH_NAMES */\r
+ /* FT_FACE_FLAG_EXTERNAL_STREAM */\r
+ /* FT_FACE_FLAG_FAST_GLYPHS */\r
+ /* FT_FACE_FLAG_HINTER */\r
+ /* */\r
+ /* FT_STYLE_FLAG_BOLD */\r
+ /* FT_STYLE_FLAG_ITALIC */\r
+ /* */\r
+ /* FT_SizeRec */\r
+ /* FT_Size_Metrics */\r
+ /* */\r
+ /* FT_GlyphSlotRec */\r
+ /* FT_Glyph_Metrics */\r
+ /* FT_SubGlyph */\r
+ /* */\r
+ /* FT_Bitmap_Size */\r
+ /* */\r
+ /* FT_Init_FreeType */\r
+ /* FT_Done_FreeType */\r
+ /* */\r
+ /* FT_New_Face */\r
+ /* FT_Done_Face */\r
+ /* FT_New_Memory_Face */\r
+ /* FT_Open_Face */\r
+ /* FT_Open_Args */\r
+ /* FT_Parameter */\r
+ /* FT_Attach_File */\r
+ /* FT_Attach_Stream */\r
+ /* */\r
+ /* FT_Set_Char_Size */\r
+ /* FT_Set_Pixel_Sizes */\r
+ /* FT_Request_Size */\r
+ /* FT_Select_Size */\r
+ /* FT_Size_Request_Type */\r
+ /* FT_Size_Request */\r
+ /* FT_Set_Transform */\r
+ /* FT_Load_Glyph */\r
+ /* FT_Get_Char_Index */\r
+ /* FT_Get_Name_Index */\r
+ /* FT_Load_Char */\r
+ /* */\r
+ /* FT_OPEN_MEMORY */\r
+ /* FT_OPEN_STREAM */\r
+ /* FT_OPEN_PATHNAME */\r
+ /* FT_OPEN_DRIVER */\r
+ /* FT_OPEN_PARAMS */\r
+ /* */\r
+ /* FT_LOAD_DEFAULT */\r
+ /* FT_LOAD_RENDER */\r
+ /* FT_LOAD_MONOCHROME */\r
+ /* FT_LOAD_LINEAR_DESIGN */\r
+ /* FT_LOAD_NO_SCALE */\r
+ /* FT_LOAD_NO_HINTING */\r
+ /* FT_LOAD_NO_BITMAP */\r
+ /* FT_LOAD_CROP_BITMAP */\r
+ /* */\r
+ /* FT_LOAD_VERTICAL_LAYOUT */\r
+ /* FT_LOAD_IGNORE_TRANSFORM */\r
+ /* FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH */\r
+ /* FT_LOAD_FORCE_AUTOHINT */\r
+ /* FT_LOAD_NO_RECURSE */\r
+ /* FT_LOAD_PEDANTIC */\r
+ /* */\r
+ /* FT_LOAD_TARGET_NORMAL */\r
+ /* FT_LOAD_TARGET_LIGHT */\r
+ /* FT_LOAD_TARGET_MONO */\r
+ /* FT_LOAD_TARGET_LCD */\r
+ /* FT_LOAD_TARGET_LCD_V */\r
+ /* */\r
+ /* FT_Render_Glyph */\r
+ /* FT_Render_Mode */\r
+ /* FT_Get_Kerning */\r
+ /* FT_Kerning_Mode */\r
+ /* FT_Get_Track_Kerning */\r
+ /* FT_Get_Glyph_Name */\r
+ /* FT_Get_Postscript_Name */\r
+ /* */\r
+ /* FT_CharMapRec */\r
+ /* FT_Select_Charmap */\r
+ /* FT_Set_Charmap */\r
+ /* FT_Get_Charmap_Index */\r
+ /* */\r
+ /*************************************************************************/\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Struct> */\r
+ /* FT_Glyph_Metrics */\r
+ /* */\r
+ /* <Description> */\r
+ /* A structure used to model the metrics of a single glyph. The */\r
+ /* values are expressed in 26.6 fractional pixel format; if the flag */\r
+ /* @FT_LOAD_NO_SCALE has been used while loading the glyph, values */\r
+ /* are expressed in font units instead. */\r
+ /* */\r
+ /* <Fields> */\r
+ /* width :: */\r
+ /* The glyph's width. */\r
+ /* */\r
+ /* height :: */\r
+ /* The glyph's height. */\r
+ /* */\r
+ /* horiBearingX :: */\r
+ /* Left side bearing for horizontal layout. */\r
+ /* */\r
+ /* horiBearingY :: */\r
+ /* Top side bearing for horizontal layout. */\r
+ /* */\r
+ /* horiAdvance :: */\r
+ /* Advance width for horizontal layout. */\r
+ /* */\r
+ /* vertBearingX :: */\r
+ /* Left side bearing for vertical layout. */\r
+ /* */\r
+ /* vertBearingY :: */\r
+ /* Top side bearing for vertical layout. */\r
+ /* */\r
+ /* vertAdvance :: */\r
+ /* Advance height for vertical layout. */\r
+ /* */\r
+ typedef struct FT_Glyph_Metrics_\r
+ {\r
+ FT_Pos width;\r
+ FT_Pos height;\r
+\r
+ FT_Pos horiBearingX;\r
+ FT_Pos horiBearingY;\r
+ FT_Pos horiAdvance;\r
+\r
+ FT_Pos vertBearingX;\r
+ FT_Pos vertBearingY;\r
+ FT_Pos vertAdvance;\r
+\r
+ } FT_Glyph_Metrics;\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Struct> */\r
+ /* FT_Bitmap_Size */\r
+ /* */\r
+ /* <Description> */\r
+ /* This structure models the metrics of a bitmap strike (i.e., a set */\r
+ /* of glyphs for a given point size and resolution) in a bitmap font. */\r
+ /* It is used for the `available_sizes' field of @FT_Face. */\r
+ /* */\r
+ /* <Fields> */\r
+ /* height :: The vertical distance, in pixels, between two */\r
+ /* consecutive baselines. It is always positive. */\r
+ /* */\r
+ /* width :: The average width, in pixels, of all glyphs in the */\r
+ /* strike. */\r
+ /* */\r
+ /* size :: The nominal size of the strike in 26.6 fractional */\r
+ /* points. This field is not very useful. */\r
+ /* */\r
+ /* x_ppem :: The horizontal ppem (nominal width) in 26.6 fractional */\r
+ /* pixels. */\r
+ /* */\r
+ /* y_ppem :: The vertical ppem (nominal height) in 26.6 fractional */\r
+ /* pixels. */\r
+ /* */\r
+ /* <Note> */\r
+ /* Windows FNT: */\r
+ /* The nominal size given in a FNT font is not reliable. Thus when */\r
+ /* the driver finds it incorrect, it sets `size' to some calculated */\r
+ /* values and sets `x_ppem' and `y_ppem' to the pixel width and */\r
+ /* height given in the font, respectively. */\r
+ /* */\r
+ /* TrueType embedded bitmaps: */\r
+ /* `size', `width', and `height' values are not contained in the */\r
+ /* bitmap strike itself. They are computed from the global font */\r
+ /* parameters. */\r
+ /* */\r
+ typedef struct FT_Bitmap_Size_\r
+ {\r
+ FT_Short height;\r
+ FT_Short width;\r
+\r
+ FT_Pos size;\r
+\r
+ FT_Pos x_ppem;\r
+ FT_Pos y_ppem;\r
+\r
+ } FT_Bitmap_Size;\r
+\r
+\r
+ /*************************************************************************/\r
+ /*************************************************************************/\r
+ /* */\r
+ /* O B J E C T C L A S S E S */\r
+ /* */\r
+ /*************************************************************************/\r
+ /*************************************************************************/\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Type> */\r
+ /* FT_Library */\r
+ /* */\r
+ /* <Description> */\r
+ /* A handle to a FreeType library instance. Each `library' is */\r
+ /* completely independent from the others; it is the `root' of a set */\r
+ /* of objects like fonts, faces, sizes, etc. */\r
+ /* */\r
+ /* It also embeds a memory manager (see @FT_Memory), as well as a */\r
+ /* scan-line converter object (see @FT_Raster). */\r
+ /* */\r
+ /* For multi-threading applications each thread should have its own */\r
+ /* FT_Library object. */\r
+ /* */\r
+ /* <Note> */\r
+ /* Library objects are normally created by @FT_Init_FreeType, and */\r
+ /* destroyed with @FT_Done_FreeType. */\r
+ /* */\r
+ typedef struct FT_LibraryRec_ *FT_Library;\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Type> */\r
+ /* FT_Module */\r
+ /* */\r
+ /* <Description> */\r
+ /* A handle to a given FreeType module object. Each module can be a */\r
+ /* font driver, a renderer, or anything else that provides services */\r
+ /* to the formers. */\r
+ /* */\r
+ typedef struct FT_ModuleRec_* FT_Module;\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Type> */\r
+ /* FT_Driver */\r
+ /* */\r
+ /* <Description> */\r
+ /* A handle to a given FreeType font driver object. Each font driver */\r
+ /* is a special module capable of creating faces from font files. */\r
+ /* */\r
+ typedef struct FT_DriverRec_* FT_Driver;\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Type> */\r
+ /* FT_Renderer */\r
+ /* */\r
+ /* <Description> */\r
+ /* A handle to a given FreeType renderer. A renderer is a special */\r
+ /* module in charge of converting a glyph image to a bitmap, when */\r
+ /* necessary. Each renderer supports a given glyph image format, and */\r
+ /* one or more target surface depths. */\r
+ /* */\r
+ typedef struct FT_RendererRec_* FT_Renderer;\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Type> */\r
+ /* FT_Face */\r
+ /* */\r
+ /* <Description> */\r
+ /* A handle to a given typographic face object. A face object models */\r
+ /* a given typeface, in a given style. */\r
+ /* */\r
+ /* <Note> */\r
+ /* Each face object also owns a single @FT_GlyphSlot object, as well */\r
+ /* as one or more @FT_Size objects. */\r
+ /* */\r
+ /* Use @FT_New_Face or @FT_Open_Face to create a new face object from */\r
+ /* a given filepathname or a custom input stream. */\r
+ /* */\r
+ /* Use @FT_Done_Face to destroy it (along with its slot and sizes). */\r
+ /* */\r
+ /* <Also> */\r
+ /* The @FT_FaceRec details the publicly accessible fields of a given */\r
+ /* face object. */\r
+ /* */\r
+ typedef struct FT_FaceRec_* FT_Face;\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Type> */\r
+ /* FT_Size */\r
+ /* */\r
+ /* <Description> */\r
+ /* A handle to an object used to model a face scaled to a given */\r
+ /* character size. */\r
+ /* */\r
+ /* <Note> */\r
+ /* Each @FT_Face has an _active_ @FT_Size object that is used by */\r
+ /* functions like @FT_Load_Glyph to determine the scaling */\r
+ /* transformation which is used to load and hint glyphs and metrics. */\r
+ /* */\r
+ /* You can use @FT_Set_Char_Size, @FT_Set_Pixel_Sizes, */\r
+ /* @FT_Request_Size or even @FT_Select_Size to change the content */\r
+ /* (i.e., the scaling values) of the active @FT_Size. */\r
+ /* */\r
+ /* You can use @FT_New_Size to create additional size objects for a */\r
+ /* given @FT_Face, but they won't be used by other functions until */\r
+ /* you activate it through @FT_Activate_Size. Only one size can be */\r
+ /* activated at any given time per face. */\r
+ /* */\r
+ /* <Also> */\r
+ /* The @FT_SizeRec structure details the publicly accessible fields */\r
+ /* of a given size object. */\r
+ /* */\r
+ typedef struct FT_SizeRec_* FT_Size;\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Type> */\r
+ /* FT_GlyphSlot */\r
+ /* */\r
+ /* <Description> */\r
+ /* A handle to a given `glyph slot'. A slot is a container where it */\r
+ /* is possible to load any one of the glyphs contained in its parent */\r
+ /* face. */\r
+ /* */\r
+ /* In other words, each time you call @FT_Load_Glyph or */\r
+ /* @FT_Load_Char, the slot's content is erased by the new glyph data, */\r
+ /* i.e., the glyph's metrics, its image (bitmap or outline), and */\r
+ /* other control information. */\r
+ /* */\r
+ /* <Also> */\r
+ /* @FT_GlyphSlotRec details the publicly accessible glyph fields. */\r
+ /* */\r
+ typedef struct FT_GlyphSlotRec_* FT_GlyphSlot;\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Type> */\r
+ /* FT_CharMap */\r
+ /* */\r
+ /* <Description> */\r
+ /* A handle to a given character map. A charmap is used to translate */\r
+ /* character codes in a given encoding into glyph indexes for its */\r
+ /* parent's face. Some font formats may provide several charmaps per */\r
+ /* font. */\r
+ /* */\r
+ /* Each face object owns zero or more charmaps, but only one of them */\r
+ /* can be `active' and used by @FT_Get_Char_Index or @FT_Load_Char. */\r
+ /* */\r
+ /* The list of available charmaps in a face is available through the */\r
+ /* `face->num_charmaps' and `face->charmaps' fields of @FT_FaceRec. */\r
+ /* */\r
+ /* The currently active charmap is available as `face->charmap'. */\r
+ /* You should call @FT_Set_Charmap to change it. */\r
+ /* */\r
+ /* <Note> */\r
+ /* When a new face is created (either through @FT_New_Face or */\r
+ /* @FT_Open_Face), the library looks for a Unicode charmap within */\r
+ /* the list and automatically activates it. */\r
+ /* */\r
+ /* <Also> */\r
+ /* The @FT_CharMapRec details the publicly accessible fields of a */\r
+ /* given character map. */\r
+ /* */\r
+ typedef struct FT_CharMapRec_* FT_CharMap;\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Macro> */\r
+ /* FT_ENC_TAG */\r
+ /* */\r
+ /* <Description> */\r
+ /* This macro converts four-letter tags into an unsigned long. It is */\r
+ /* used to define `encoding' identifiers (see @FT_Encoding). */\r
+ /* */\r
+ /* <Note> */\r
+ /* Since many 16bit compilers don't like 32bit enumerations, you */\r
+ /* should redefine this macro in case of problems to something like */\r
+ /* this: */\r
+ /* */\r
+ /* { */\r
+ /* #define FT_ENC_TAG( value, a, b, c, d ) value */\r
+ /* } */\r
+ /* */\r
+ /* to get a simple enumeration without assigning special numbers. */\r
+ /* */\r
+\r
+#ifndef FT_ENC_TAG\r
+#define FT_ENC_TAG( value, a, b, c, d ) \\r
+ value = ( ( (FT_UInt32)(a) << 24 ) | \\r
+ ( (FT_UInt32)(b) << 16 ) | \\r
+ ( (FT_UInt32)(c) << 8 ) | \\r
+ (FT_UInt32)(d) )\r
+\r
+#endif /* FT_ENC_TAG */\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Enum> */\r
+ /* FT_Encoding */\r
+ /* */\r
+ /* <Description> */\r
+ /* An enumeration used to specify character sets supported by */\r
+ /* charmaps. Used in the @FT_Select_Charmap API function. */\r
+ /* */\r
+ /* <Note> */\r
+ /* Despite the name, this enumeration lists specific character */\r
+ /* repertories (i.e., charsets), and not text encoding methods (e.g., */\r
+ /* UTF-8, UTF-16, GB2312_EUC, etc.). */\r
+ /* */\r
+ /* Because of 32-bit charcodes defined in Unicode (i.e., surrogates), */\r
+ /* all character codes must be expressed as FT_Longs. */\r
+ /* */\r
+ /* Other encodings might be defined in the future. */\r
+ /* */\r
+ /* <Values> */\r
+ /* FT_ENCODING_NONE :: */\r
+ /* The encoding value 0 is reserved. */\r
+ /* */\r
+ /* FT_ENCODING_UNICODE :: */\r
+ /* Corresponds to the Unicode character set. This value covers */\r
+ /* all versions of the Unicode repertoire, including ASCII and */\r
+ /* Latin-1. Most fonts include a Unicode charmap, but not all */\r
+ /* of them. */\r
+ /* */\r
+ /* FT_ENCODING_MS_SYMBOL :: */\r
+ /* Corresponds to the Microsoft Symbol encoding, used to encode */\r
+ /* mathematical symbols in the 32..255 character code range. For */\r
+ /* more information, see `http://www.ceviz.net/symbol.htm'. */\r
+ /* */\r
+ /* FT_ENCODING_SJIS :: */\r
+ /* Corresponds to Japanese SJIS encoding. More info at */\r
+ /* at `http://langsupport.japanreference.com/encoding.shtml'. */\r
+ /* See note on multi-byte encodings below. */\r
+ /* */\r
+ /* FT_ENCODING_GB2312 :: */\r
+ /* Corresponds to an encoding system for Simplified Chinese as used */\r
+ /* used in mainland China. */\r
+ /* */\r
+ /* FT_ENCODING_BIG5 :: */\r
+ /* Corresponds to an encoding system for Traditional Chinese as used */\r
+ /* in Taiwan and Hong Kong. */\r
+ /* */\r
+ /* FT_ENCODING_WANSUNG :: */\r
+ /* Corresponds to the Korean encoding system known as Wansung. */\r
+ /* For more information see */\r
+ /* `http://www.microsoft.com/typography/unicode/949.txt'. */\r
+ /* */\r
+ /* FT_ENCODING_JOHAB :: */\r
+ /* The Korean standard character set (KS C-5601-1992), which */\r
+ /* corresponds to MS Windows code page 1361. This character set */\r
+ /* includes all possible Hangeul character combinations. */\r
+ /* */\r
+ /* FT_ENCODING_ADOBE_LATIN_1 :: */\r
+ /* Corresponds to a Latin-1 encoding as defined in a Type 1 */\r
+ /* Postscript font. It is limited to 256 character codes. */\r
+ /* */\r
+ /* FT_ENCODING_ADOBE_STANDARD :: */\r
+ /* Corresponds to the Adobe Standard encoding, as found in Type 1, */\r
+ /* CFF, and OpenType/CFF fonts. It is limited to 256 character */\r
+ /* codes. */\r
+ /* */\r
+ /* FT_ENCODING_ADOBE_EXPERT :: */\r
+ /* Corresponds to the Adobe Expert encoding, as found in Type 1, */\r
+ /* CFF, and OpenType/CFF fonts. It is limited to 256 character */\r
+ /* codes. */\r
+ /* */\r
+ /* FT_ENCODING_ADOBE_CUSTOM :: */\r
+ /* Corresponds to a custom encoding, as found in Type 1, CFF, and */\r
+ /* OpenType/CFF fonts. It is limited to 256 character codes. */\r
+ /* */\r
+ /* FT_ENCODING_APPLE_ROMAN :: */\r
+ /* Corresponds to the 8-bit Apple roman encoding. Many TrueType and */\r
+ /* OpenType fonts contain a charmap for this encoding, since older */\r
+ /* versions of Mac OS are able to use it. */\r
+ /* */\r
+ /* FT_ENCODING_OLD_LATIN_2 :: */\r
+ /* This value is deprecated and was never used nor reported by */\r
+ /* FreeType. Don't use or test for it. */\r
+ /* */\r
+ /* FT_ENCODING_MS_SJIS :: */\r
+ /* Same as FT_ENCODING_SJIS. Deprecated. */\r
+ /* */\r
+ /* FT_ENCODING_MS_GB2312 :: */\r
+ /* Same as FT_ENCODING_GB2312. Deprecated. */\r
+ /* */\r
+ /* FT_ENCODING_MS_BIG5 :: */\r
+ /* Same as FT_ENCODING_BIG5. Deprecated. */\r
+ /* */\r
+ /* FT_ENCODING_MS_WANSUNG :: */\r
+ /* Same as FT_ENCODING_WANSUNG. Deprecated. */\r
+ /* */\r
+ /* FT_ENCODING_MS_JOHAB :: */\r
+ /* Same as FT_ENCODING_JOHAB. Deprecated. */\r
+ /* */\r
+ /* <Note> */\r
+ /* By default, FreeType automatically synthetizes a Unicode charmap */\r
+ /* for Postscript fonts, using their glyph names dictionaries. */\r
+ /* However, it also reports the encodings defined explicitly in the */\r
+ /* font file, for the cases when they are needed, with the Adobe */\r
+ /* values as well. */\r
+ /* */\r
+ /* FT_ENCODING_NONE is set by the BDF and PCF drivers if the charmap */\r
+ /* is neither Unicode nor ISO-8859-1 (otherwise it is set to */\r
+ /* FT_ENCODING_UNICODE). Use @FT_Get_BDF_Charset_ID to find out which */\r
+ /* encoding is really present. If, for example, the `cs_registry' */\r
+ /* field is `KOI8' and the `cs_encoding' field is `R', the font is */\r
+ /* encoded in KOI8-R. */\r
+ /* */\r
+ /* FT_ENCODING_NONE is always set (with a single exception) by the */\r
+ /* winfonts driver. Use @FT_Get_WinFNT_Header and examine the */\r
+ /* `charset' field of the @FT_WinFNT_HeaderRec structure to find out */\r
+ /* which encoding is really present. For example, */\r
+ /* @FT_WinFNT_ID_CP1251 (204) means Windows code page 1251 (for */\r
+ /* Russian). */\r
+ /* */\r
+ /* FT_ENCODING_NONE is set if `platform_id' is @TT_PLATFORM_MACINTOSH */\r
+ /* and `encoding_id' is not @TT_MAC_ID_ROMAN (otherwise it is set to */\r
+ /* FT_ENCODING_APPLE_ROMAN). */\r
+ /* */\r
+ /* If `platform_id' is @TT_PLATFORM_MACINTOSH, use the function c */\r
+ /* @FT_Get_CMap_Language_ID to query the Mac language ID which may be */\r
+ /* needed to be able to distinguish Apple encoding variants. See */\r
+ /* */\r
+ /* http://www.unicode.org/Public/MAPPINGS/VENDORS/APPLE/README.TXT */\r
+ /* */\r
+ /* to get an idea how to do that. Basically, if the language ID is 0, */\r
+ /* don't use it, otherwise subtract 1 from the language ID. Then */\r
+ /* examine `encoding_id'. If, for example, `encoding_id' is */\r
+ /* @TT_MAC_ID_ROMAN and the language ID (minus 1) is */\r
+ /* `TT_MAC_LANGID_GREEK', it is the Greek encoding, not Roman. */\r
+ /* @TT_MAC_ID_ARABIC with `TT_MAC_LANGID_FARSI' means the Farsi */\r
+ /* variant the Arabic encoding. */\r
+ /* */\r
+ typedef enum FT_Encoding_\r
+ {\r
+ FT_ENC_TAG( FT_ENCODING_NONE, 0, 0, 0, 0 ),\r
+\r
+ FT_ENC_TAG( FT_ENCODING_MS_SYMBOL, 's', 'y', 'm', 'b' ),\r
+ FT_ENC_TAG( FT_ENCODING_UNICODE, 'u', 'n', 'i', 'c' ),\r
+\r
+ FT_ENC_TAG( FT_ENCODING_SJIS, 's', 'j', 'i', 's' ),\r
+ FT_ENC_TAG( FT_ENCODING_GB2312, 'g', 'b', ' ', ' ' ),\r
+ FT_ENC_TAG( FT_ENCODING_BIG5, 'b', 'i', 'g', '5' ),\r
+ FT_ENC_TAG( FT_ENCODING_WANSUNG, 'w', 'a', 'n', 's' ),\r
+ FT_ENC_TAG( FT_ENCODING_JOHAB, 'j', 'o', 'h', 'a' ),\r
+\r
+ /* for backwards compatibility */\r
+ FT_ENCODING_MS_SJIS = FT_ENCODING_SJIS,\r
+ FT_ENCODING_MS_GB2312 = FT_ENCODING_GB2312,\r
+ FT_ENCODING_MS_BIG5 = FT_ENCODING_BIG5,\r
+ FT_ENCODING_MS_WANSUNG = FT_ENCODING_WANSUNG,\r
+ FT_ENCODING_MS_JOHAB = FT_ENCODING_JOHAB,\r
+\r
+ FT_ENC_TAG( FT_ENCODING_ADOBE_STANDARD, 'A', 'D', 'O', 'B' ),\r
+ FT_ENC_TAG( FT_ENCODING_ADOBE_EXPERT, 'A', 'D', 'B', 'E' ),\r
+ FT_ENC_TAG( FT_ENCODING_ADOBE_CUSTOM, 'A', 'D', 'B', 'C' ),\r
+ FT_ENC_TAG( FT_ENCODING_ADOBE_LATIN_1, 'l', 'a', 't', '1' ),\r
+\r
+ FT_ENC_TAG( FT_ENCODING_OLD_LATIN_2, 'l', 'a', 't', '2' ),\r
+\r
+ FT_ENC_TAG( FT_ENCODING_APPLE_ROMAN, 'a', 'r', 'm', 'n' )\r
+\r
+ } FT_Encoding;\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Enum> */\r
+ /* ft_encoding_xxx */\r
+ /* */\r
+ /* <Description> */\r
+ /* These constants are deprecated; use the corresponding @FT_Encoding */\r
+ /* values instead. */\r
+ /* */\r
+#define ft_encoding_none FT_ENCODING_NONE\r
+#define ft_encoding_unicode FT_ENCODING_UNICODE\r
+#define ft_encoding_symbol FT_ENCODING_MS_SYMBOL\r
+#define ft_encoding_latin_1 FT_ENCODING_ADOBE_LATIN_1\r
+#define ft_encoding_latin_2 FT_ENCODING_OLD_LATIN_2\r
+#define ft_encoding_sjis FT_ENCODING_SJIS\r
+#define ft_encoding_gb2312 FT_ENCODING_GB2312\r
+#define ft_encoding_big5 FT_ENCODING_BIG5\r
+#define ft_encoding_wansung FT_ENCODING_WANSUNG\r
+#define ft_encoding_johab FT_ENCODING_JOHAB\r
+\r
+#define ft_encoding_adobe_standard FT_ENCODING_ADOBE_STANDARD\r
+#define ft_encoding_adobe_expert FT_ENCODING_ADOBE_EXPERT\r
+#define ft_encoding_adobe_custom FT_ENCODING_ADOBE_CUSTOM\r
+#define ft_encoding_apple_roman FT_ENCODING_APPLE_ROMAN\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Struct> */\r
+ /* FT_CharMapRec */\r
+ /* */\r
+ /* <Description> */\r
+ /* The base charmap structure. */\r
+ /* */\r
+ /* <Fields> */\r
+ /* face :: A handle to the parent face object. */\r
+ /* */\r
+ /* encoding :: An @FT_Encoding tag identifying the charmap. Use */\r
+ /* this with @FT_Select_Charmap. */\r
+ /* */\r
+ /* platform_id :: An ID number describing the platform for the */\r
+ /* following encoding ID. This comes directly from */\r
+ /* the TrueType specification and should be emulated */\r
+ /* for other formats. */\r
+ /* */\r
+ /* encoding_id :: A platform specific encoding number. This also */\r
+ /* comes from the TrueType specification and should be */\r
+ /* emulated similarly. */\r
+ /* */\r
+ typedef struct FT_CharMapRec_\r
+ {\r
+ FT_Face face;\r
+ FT_Encoding encoding;\r
+ FT_UShort platform_id;\r
+ FT_UShort encoding_id;\r
+\r
+ } FT_CharMapRec;\r
+\r
+\r
+ /*************************************************************************/\r
+ /*************************************************************************/\r
+ /* */\r
+ /* B A S E O B J E C T C L A S S E S */\r
+ /* */\r
+ /*************************************************************************/\r
+ /*************************************************************************/\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Type> */\r
+ /* FT_Face_Internal */\r
+ /* */\r
+ /* <Description> */\r
+ /* An opaque handle to an `FT_Face_InternalRec' structure, used to */\r
+ /* model private data of a given @FT_Face object. */\r
+ /* */\r
+ /* This structure might change between releases of FreeType 2 and is */\r
+ /* not generally available to client applications. */\r
+ /* */\r
+ typedef struct FT_Face_InternalRec_* FT_Face_Internal;\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Struct> */\r
+ /* FT_FaceRec */\r
+ /* */\r
+ /* <Description> */\r
+ /* FreeType root face class structure. A face object models a */\r
+ /* typeface in a font file. */\r
+ /* */\r
+ /* <Fields> */\r
+ /* num_faces :: The number of faces in the font file. Some */\r
+ /* font formats can have multiple faces in */\r
+ /* a font file. */\r
+ /* */\r
+ /* face_index :: The index of the face in the font file. It */\r
+ /* is set to 0 if there is only one face in */\r
+ /* the font file. */\r
+ /* */\r
+ /* face_flags :: A set of bit flags that give important */\r
+ /* information about the face; see */\r
+ /* @FT_FACE_FLAG_XXX for the details. */\r
+ /* */\r
+ /* style_flags :: A set of bit flags indicating the style of */\r
+ /* the face; see @FT_STYLE_FLAG_XXX for the */\r
+ /* details. */\r
+ /* */\r
+ /* num_glyphs :: The number of glyphs in the face. If the */\r
+ /* face is scalable and has sbits (see */\r
+ /* `num_fixed_sizes'), it is set to the number */\r
+ /* of outline glyphs. */\r
+ /* */\r
+ /* family_name :: The face's family name. This is an ASCII */\r
+ /* string, usually in English, which describes */\r
+ /* the typeface's family (like `Times New */\r
+ /* Roman', `Bodoni', `Garamond', etc). This */\r
+ /* is a least common denominator used to list */\r
+ /* fonts. Some formats (TrueType & OpenType) */\r
+ /* provide localized and Unicode versions of */\r
+ /* this string. Applications should use the */\r
+ /* format specific interface to access them. */\r
+ /* */\r
+ /* style_name :: The face's style name. This is an ASCII */\r
+ /* string, usually in English, which describes */\r
+ /* the typeface's style (like `Italic', */\r
+ /* `Bold', `Condensed', etc). Not all font */\r
+ /* formats provide a style name, so this field */\r
+ /* is optional, and can be set to NULL. As */\r
+ /* for `family_name', some formats provide */\r
+ /* localized and Unicode versions of this */\r
+ /* string. Applications should use the format */\r
+ /* specific interface to access them. */\r
+ /* */\r
+ /* num_fixed_sizes :: The number of bitmap strikes in the face. */\r
+ /* Even if the face is scalable, there might */\r
+ /* still be bitmap strikes, which are called */\r
+ /* `sbits' in that case. */\r
+ /* */\r
+ /* available_sizes :: An array of @FT_Bitmap_Size for all bitmap */\r
+ /* strikes in the face. It is set to NULL if */\r
+ /* there is no bitmap strike. */\r
+ /* */\r
+ /* num_charmaps :: The number of charmaps in the face. */\r
+ /* */\r
+ /* charmaps :: An array of the charmaps of the face. */\r
+ /* */\r
+ /* generic :: A field reserved for client uses. See the */\r
+ /* @FT_Generic type description. */\r
+ /* */\r
+ /* bbox :: The font bounding box. Coordinates are */\r
+ /* expressed in font units (see */\r
+ /* `units_per_EM'). The box is large enough */\r
+ /* to contain any glyph from the font. Thus, */\r
+ /* `bbox.yMax' can be seen as the `maximal */\r
+ /* ascender', and `bbox.yMin' as the `minimal */\r
+ /* descender'. Only relevant for scalable */\r
+ /* formats. */\r
+ /* */\r
+ /* units_per_EM :: The number of font units per EM square for */\r
+ /* this face. This is typically 2048 for */\r
+ /* TrueType fonts, and 1000 for Type 1 fonts. */\r
+ /* Only relevant for scalable formats. */\r
+ /* */\r
+ /* ascender :: The typographic ascender of the face, */\r
+ /* expressed in font units. For font formats */\r
+ /* not having this information, it is set to */\r
+ /* `bbox.yMax'. Only relevant for scalable */\r
+ /* formats. */\r
+ /* */\r
+ /* descender :: The typographic descender of the face, */\r
+ /* expressed in font units. For font formats */\r
+ /* not having this information, it is set to */\r
+ /* `bbox.yMin'. Note that this field is */\r
+ /* usually negative. Only relevant for */\r
+ /* scalable formats. */\r
+ /* */\r
+ /* height :: The height is the vertical distance */\r
+ /* between two consecutive baselines, */\r
+ /* expressed in font units. It is always */\r
+ /* positive. Only relevant for scalable */\r
+ /* formats. */\r
+ /* */\r
+ /* max_advance_width :: The maximal advance width, in font units, */\r
+ /* for all glyphs in this face. This can be */\r
+ /* used to make word wrapping computations */\r
+ /* faster. Only relevant for scalable */\r
+ /* formats. */\r
+ /* */\r
+ /* max_advance_height :: The maximal advance height, in font units, */\r
+ /* for all glyphs in this face. This is only */\r
+ /* relevant for vertical layouts, and is set */\r
+ /* to `height' for fonts that do not provide */\r
+ /* vertical metrics. Only relevant for */\r
+ /* scalable formats. */\r
+ /* */\r
+ /* underline_position :: The position, in font units, of the */\r
+ /* underline line for this face. It's the */\r
+ /* center of the underlining stem. Only */\r
+ /* relevant for scalable formats. */\r
+ /* */\r
+ /* underline_thickness :: The thickness, in font units, of the */\r
+ /* underline for this face. Only relevant for */\r
+ /* scalable formats. */\r
+ /* */\r
+ /* glyph :: The face's associated glyph slot(s). */\r
+ /* */\r
+ /* size :: The current active size for this face. */\r
+ /* */\r
+ /* charmap :: The current active charmap for this face. */\r
+ /* */\r
+ /* <Note> */\r
+ /* Fields may be changed after a call to @FT_Attach_File or */\r
+ /* @FT_Attach_Stream. */\r
+ /* */\r
+ typedef struct FT_FaceRec_\r
+ {\r
+ FT_Long num_faces;\r
+ FT_Long face_index;\r
+\r
+ FT_Long face_flags;\r
+ FT_Long style_flags;\r
+\r
+ FT_Long num_glyphs;\r
+\r
+ FT_String* family_name;\r
+ FT_String* style_name;\r
+\r
+ FT_Int num_fixed_sizes;\r
+ FT_Bitmap_Size* available_sizes;\r
+\r
+ FT_Int num_charmaps;\r
+ FT_CharMap* charmaps;\r
+\r
+ FT_Generic generic;\r
+\r
+ /*# The following member variables (down to `underline_thickness') */\r
+ /*# are only relevant to scalable outlines; cf. @FT_Bitmap_Size */\r
+ /*# for bitmap fonts. */\r
+ FT_BBox bbox;\r
+\r
+ FT_UShort units_per_EM;\r
+ FT_Short ascender;\r
+ FT_Short descender;\r
+ FT_Short height;\r
+\r
+ FT_Short max_advance_width;\r
+ FT_Short max_advance_height;\r
+\r
+ FT_Short underline_position;\r
+ FT_Short underline_thickness;\r
+\r
+ FT_GlyphSlot glyph;\r
+ FT_Size size;\r
+ FT_CharMap charmap;\r
+\r
+ /*@private begin */\r
+\r
+ FT_Driver driver;\r
+ FT_Memory memory;\r
+ FT_Stream stream;\r
+\r
+ FT_ListRec sizes_list;\r
+\r
+ FT_Generic autohint;\r
+ void* extensions;\r
+\r
+ FT_Face_Internal internal;\r
+\r
+ /*@private end */\r
+\r
+ } FT_FaceRec;\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Enum> */\r
+ /* FT_FACE_FLAG_XXX */\r
+ /* */\r
+ /* <Description> */\r
+ /* A list of bit flags used in the `face_flags' field of the */\r
+ /* @FT_FaceRec structure. They inform client applications of */\r
+ /* properties of the corresponding face. */\r
+ /* */\r
+ /* <Values> */\r
+ /* FT_FACE_FLAG_SCALABLE :: */\r
+ /* Indicates that the face contains outline glyphs. This doesn't */\r
+ /* prevent bitmap strikes, i.e., a face can have both this and */\r
+ /* and @FT_FACE_FLAG_FIXED_SIZES set. */\r
+ /* */\r
+ /* FT_FACE_FLAG_FIXED_SIZES :: */\r
+ /* Indicates that the face contains bitmap strikes. See also the */\r
+ /* `num_fixed_sizes' and `available_sizes' fields of @FT_FaceRec. */\r
+ /* */\r
+ /* FT_FACE_FLAG_FIXED_WIDTH :: */\r
+ /* Indicates that the face contains fixed-width characters (like */\r
+ /* Courier, Lucido, MonoType, etc.). */\r
+ /* */\r
+ /* FT_FACE_FLAG_SFNT :: */\r
+ /* Indicates that the face uses the `sfnt' storage scheme. For */\r
+ /* now, this means TrueType and OpenType. */\r
+ /* */\r
+ /* FT_FACE_FLAG_HORIZONTAL :: */\r
+ /* Indicates that the face contains horizontal glyph metrics. This */\r
+ /* should be set for all common formats. */\r
+ /* */\r
+ /* FT_FACE_FLAG_VERTICAL :: */\r
+ /* Indicates that the face contains vertical glyph metrics. This */\r
+ /* is only available in some formats, not all of them. */\r
+ /* */\r
+ /* FT_FACE_FLAG_KERNING :: */\r
+ /* Indicates that the face contains kerning information. If set, */\r
+ /* the kerning distance can be retrieved through the function */\r
+ /* @FT_Get_Kerning. Otherwise the function always return the */\r
+ /* vector (0,0). Note that FreeType doesn't handle kerning data */\r
+ /* from the `GPOS' table (as present in some OpenType fonts). */\r
+ /* */\r
+ /* FT_FACE_FLAG_FAST_GLYPHS :: */\r
+ /* THIS FLAG IS DEPRECATED. DO NOT USE OR TEST IT. */\r
+ /* */\r
+ /* FT_FACE_FLAG_MULTIPLE_MASTERS :: */\r
+ /* Indicates that the font contains multiple masters and is capable */\r
+ /* of interpolating between them. See the multiple-masters */\r
+ /* specific API for details. */\r
+ /* */\r
+ /* FT_FACE_FLAG_GLYPH_NAMES :: */\r
+ /* Indicates that the font contains glyph names that can be */\r
+ /* retrieved through @FT_Get_Glyph_Name. Note that some TrueType */\r
+ /* fonts contain broken glyph name tables. Use the function */\r
+ /* @FT_Has_PS_Glyph_Names when needed. */\r
+ /* */\r
+ /* FT_FACE_FLAG_EXTERNAL_STREAM :: */\r
+ /* Used internally by FreeType to indicate that a face's stream was */\r
+ /* provided by the client application and should not be destroyed */\r
+ /* when @FT_Done_Face is called. Don't read or test this flag. */\r
+ /* */\r
+ /* FT_FACE_FLAG_HINTER :: */\r
+ /* Set if the font driver has a hinting machine of its own. For */\r
+ /* example, with TrueType fonts, it makes sense to use data from */\r
+ /* the SFNT `gasp' table only if the native TrueType hinting engine */\r
+ /* (with the bytecode interpreter) is available and active. */\r
+ /* */\r
+#define FT_FACE_FLAG_SCALABLE ( 1L << 0 )\r
+#define FT_FACE_FLAG_FIXED_SIZES ( 1L << 1 )\r
+#define FT_FACE_FLAG_FIXED_WIDTH ( 1L << 2 )\r
+#define FT_FACE_FLAG_SFNT ( 1L << 3 )\r
+#define FT_FACE_FLAG_HORIZONTAL ( 1L << 4 )\r
+#define FT_FACE_FLAG_VERTICAL ( 1L << 5 )\r
+#define FT_FACE_FLAG_KERNING ( 1L << 6 )\r
+#define FT_FACE_FLAG_FAST_GLYPHS ( 1L << 7 )\r
+#define FT_FACE_FLAG_MULTIPLE_MASTERS ( 1L << 8 )\r
+#define FT_FACE_FLAG_GLYPH_NAMES ( 1L << 9 )\r
+#define FT_FACE_FLAG_EXTERNAL_STREAM ( 1L << 10 )\r
+#define FT_FACE_FLAG_HINTER ( 1L << 11 )\r
+\r
+ /* */\r
+\r
+\r
+ /*************************************************************************\r
+ *\r
+ * @macro:\r
+ * FT_HAS_HORIZONTAL( face )\r
+ *\r
+ * @description:\r
+ * A macro that returns true whenever a face object contains\r
+ * horizontal metrics (this is true for all font formats though).\r
+ *\r
+ * @also:\r
+ * @FT_HAS_VERTICAL can be used to check for vertical metrics.\r
+ *\r
+ */\r
+#define FT_HAS_HORIZONTAL( face ) \\r
+ ( face->face_flags & FT_FACE_FLAG_HORIZONTAL )\r
+\r
+\r
+ /*************************************************************************\r
+ *\r
+ * @macro:\r
+ * FT_HAS_VERTICAL( face )\r
+ *\r
+ * @description:\r
+ * A macro that returns true whenever a face object contains vertical\r
+ * metrics.\r
+ *\r
+ */\r
+#define FT_HAS_VERTICAL( face ) \\r
+ ( face->face_flags & FT_FACE_FLAG_VERTICAL )\r
+\r
+\r
+ /*************************************************************************\r
+ *\r
+ * @macro:\r
+ * FT_HAS_KERNING( face )\r
+ *\r
+ * @description:\r
+ * A macro that returns true whenever a face object contains kerning\r
+ * data that can be accessed with @FT_Get_Kerning.\r
+ *\r
+ */\r
+#define FT_HAS_KERNING( face ) \\r
+ ( face->face_flags & FT_FACE_FLAG_KERNING )\r
+\r
+\r
+ /*************************************************************************\r
+ *\r
+ * @macro:\r
+ * FT_IS_SCALABLE( face )\r
+ *\r
+ * @description:\r
+ * A macro that returns true whenever a face object contains a scalable\r
+ * font face (true for TrueType, Type 1, Type 42, CID, OpenType/CFF,\r
+ * and PFR font formats.\r
+ *\r
+ */\r
+#define FT_IS_SCALABLE( face ) \\r
+ ( face->face_flags & FT_FACE_FLAG_SCALABLE )\r
+\r
+\r
+ /*************************************************************************\r
+ *\r
+ * @macro:\r
+ * FT_IS_SFNT( face )\r
+ *\r
+ * @description:\r
+ * A macro that returns true whenever a face object contains a font\r
+ * whose format is based on the SFNT storage scheme. This usually\r
+ * means: TrueType fonts, OpenType fonts, as well as SFNT-based embedded\r
+ * bitmap fonts.\r
+ *\r
+ * If this macro is true, all functions defined in @FT_SFNT_NAMES_H and\r
+ * @FT_TRUETYPE_TABLES_H are available.\r
+ *\r
+ */\r
+#define FT_IS_SFNT( face ) \\r
+ ( face->face_flags & FT_FACE_FLAG_SFNT )\r
+\r
+\r
+ /*************************************************************************\r
+ *\r
+ * @macro:\r
+ * FT_IS_FIXED_WIDTH( face )\r
+ *\r
+ * @description:\r
+ * A macro that returns true whenever a face object contains a font face\r
+ * that contains fixed-width (or `monospace', `fixed-pitch', etc.)\r
+ * glyphs.\r
+ *\r
+ */\r
+#define FT_IS_FIXED_WIDTH( face ) \\r
+ ( face->face_flags & FT_FACE_FLAG_FIXED_WIDTH )\r
+\r
+\r
+ /*************************************************************************\r
+ *\r
+ * @macro:\r
+ * FT_HAS_FIXED_SIZES( face )\r
+ *\r
+ * @description:\r
+ * A macro that returns true whenever a face object contains some\r
+ * embedded bitmaps. See the `available_sizes' field of the\r
+ * @FT_FaceRec structure.\r
+ *\r
+ */\r
+#define FT_HAS_FIXED_SIZES( face ) \\r
+ ( face->face_flags & FT_FACE_FLAG_FIXED_SIZES )\r
+\r
+ /* */\r
+\r
+\r
+ /*************************************************************************\r
+ *\r
+ * @macro:\r
+ * FT_HAS_FAST_GLYPHS( face )\r
+ *\r
+ * @description:\r
+ * Deprecated.\r
+ *\r
+ */\r
+#define FT_HAS_FAST_GLYPHS( face ) 0\r
+\r
+\r
+ /*************************************************************************\r
+ *\r
+ * @macro:\r
+ * FT_HAS_GLYPH_NAMES( face )\r
+ *\r
+ * @description:\r
+ * A macro that returns true whenever a face object contains some glyph\r
+ * names that can be accessed through @FT_Get_Glyph_Name.\r
+ *\r
+ */\r
+#define FT_HAS_GLYPH_NAMES( face ) \\r
+ ( face->face_flags & FT_FACE_FLAG_GLYPH_NAMES )\r
+\r
+\r
+ /*************************************************************************\r
+ *\r
+ * @macro:\r
+ * FT_HAS_MULTIPLE_MASTERS( face )\r
+ *\r
+ * @description:\r
+ * A macro that returns true whenever a face object contains some\r
+ * multiple masters. The functions provided by @FT_MULTIPLE_MASTERS_H\r
+ * are then available to choose the exact design you want.\r
+ *\r
+ */\r
+#define FT_HAS_MULTIPLE_MASTERS( face ) \\r
+ ( face->face_flags & FT_FACE_FLAG_MULTIPLE_MASTERS )\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Constant> */\r
+ /* FT_STYLE_FLAG_XXX */\r
+ /* */\r
+ /* <Description> */\r
+ /* A list of bit-flags used to indicate the style of a given face. */\r
+ /* These are used in the `style_flags' field of @FT_FaceRec. */\r
+ /* */\r
+ /* <Values> */\r
+ /* FT_STYLE_FLAG_ITALIC :: */\r
+ /* Indicates that a given face is italicized. */\r
+ /* */\r
+ /* FT_STYLE_FLAG_BOLD :: */\r
+ /* Indicates that a given face is bold. */\r
+ /* */\r
+#define FT_STYLE_FLAG_ITALIC ( 1 << 0 )\r
+#define FT_STYLE_FLAG_BOLD ( 1 << 1 )\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Type> */\r
+ /* FT_Size_Internal */\r
+ /* */\r
+ /* <Description> */\r
+ /* An opaque handle to an `FT_Size_InternalRec' structure, used to */\r
+ /* model private data of a given FT_Size object. */\r
+ /* */\r
+ typedef struct FT_Size_InternalRec_* FT_Size_Internal;\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Struct> */\r
+ /* FT_Size_Metrics */\r
+ /* */\r
+ /* <Description> */\r
+ /* The size metrics structure gives the metrics of a size object. */\r
+ /* */\r
+ /* <Fields> */\r
+ /* x_ppem :: The width of the scaled EM square in pixels, hence */\r
+ /* the term `ppem' (pixels per EM). It is also */\r
+ /* referred to as `nominal width'. */\r
+ /* */\r
+ /* y_ppem :: The height of the scaled EM square in pixels, */\r
+ /* hence the term `ppem' (pixels per EM). It is also */\r
+ /* referred to as `nominal height'. */\r
+ /* */\r
+ /* x_scale :: A 16.16 fractional scaling value used to convert */\r
+ /* horizontal metrics from font units to 26.6 */\r
+ /* fractional pixels. Only relevant for scalable */\r
+ /* font formats. */\r
+ /* */\r
+ /* y_scale :: A 16.16 fractional scaling value used to convert */\r
+ /* vertical metrics from font units to 26.6 */\r
+ /* fractional pixels. Only relevant for scalable */\r
+ /* font formats. */\r
+ /* */\r
+ /* ascender :: The ascender in 26.6 fractional pixels. See */\r
+ /* @FT_FaceRec for the details. */\r
+ /* */\r
+ /* descender :: The descender in 26.6 fractional pixels. See */\r
+ /* @FT_FaceRec for the details. */\r
+ /* */\r
+ /* height :: The height in 26.6 fractional pixels. See */\r
+ /* @FT_FaceRec for the details. */\r
+ /* */\r
+ /* max_advance :: The maximal advance width in 26.6 fractional */\r
+ /* pixels. See @FT_FaceRec for the details. */\r
+ /* */\r
+ /* <Note> */\r
+ /* The scaling values, if relevant, are determined first during a */\r
+ /* size changing operation. The remaining fields are then set by the */\r
+ /* driver. For scalable formats, they are usually set to scaled */\r
+ /* values of the corresponding fields in @FT_FaceRec. */\r
+ /* */\r
+ /* Note that due to glyph hinting, these values might not be exact */\r
+ /* for certain fonts. Thus they must be treated as unreliable */\r
+ /* with an error margin of at least one pixel! */\r
+ /* */\r
+ /* Indeed, the only way to get the exact metrics is to render _all_ */\r
+ /* glyphs. As this would be a definite performance hit, it is up to */\r
+ /* client applications to perform such computations. */\r
+ /* */\r
+ /* The FT_Size_Metrics structure is valid for bitmap fonts also. */\r
+ /* */\r
+ typedef struct FT_Size_Metrics_\r
+ {\r
+ FT_UShort x_ppem; /* horizontal pixels per EM */\r
+ FT_UShort y_ppem; /* vertical pixels per EM */\r
+\r
+ FT_Fixed x_scale; /* scaling values used to convert font */\r
+ FT_Fixed y_scale; /* units to 26.6 fractional pixels */\r
+\r
+ FT_Pos ascender; /* ascender in 26.6 frac. pixels */\r
+ FT_Pos descender; /* descender in 26.6 frac. pixels */\r
+ FT_Pos height; /* text height in 26.6 frac. pixels */\r
+ FT_Pos max_advance; /* max horizontal advance, in 26.6 pixels */\r
+\r
+ } FT_Size_Metrics;\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Struct> */\r
+ /* FT_SizeRec */\r
+ /* */\r
+ /* <Description> */\r
+ /* FreeType root size class structure. A size object models a face */\r
+ /* object at a given size. */\r
+ /* */\r
+ /* <Fields> */\r
+ /* face :: Handle to the parent face object. */\r
+ /* */\r
+ /* generic :: A typeless pointer, which is unused by the FreeType */\r
+ /* library or any of its drivers. It can be used by */\r
+ /* client applications to link their own data to each size */\r
+ /* object. */\r
+ /* */\r
+ /* metrics :: Metrics for this size object. This field is read-only. */\r
+ /* */\r
+ typedef struct FT_SizeRec_\r
+ {\r
+ FT_Face face; /* parent face object */\r
+ FT_Generic generic; /* generic pointer for client uses */\r
+ FT_Size_Metrics metrics; /* size metrics */\r
+ FT_Size_Internal internal;\r
+\r
+ } FT_SizeRec;\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Struct> */\r
+ /* FT_SubGlyph */\r
+ /* */\r
+ /* <Description> */\r
+ /* The subglyph structure is an internal object used to describe */\r
+ /* subglyphs (for example, in the case of composites). */\r
+ /* */\r
+ /* <Note> */\r
+ /* The subglyph implementation is not part of the high-level API, */\r
+ /* hence the forward structure declaration. */\r
+ /* */\r
+ /* You can however retrieve subglyph information with */\r
+ /* @FT_Get_SubGlyph_Info. */\r
+ /* */\r
+ typedef struct FT_SubGlyphRec_* FT_SubGlyph;\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Type> */\r
+ /* FT_Slot_Internal */\r
+ /* */\r
+ /* <Description> */\r
+ /* An opaque handle to an `FT_Slot_InternalRec' structure, used to */\r
+ /* model private data of a given FT_GlyphSlot object. */\r
+ /* */\r
+ typedef struct FT_Slot_InternalRec_* FT_Slot_Internal;\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Struct> */\r
+ /* FT_GlyphSlotRec */\r
+ /* */\r
+ /* <Description> */\r
+ /* FreeType root glyph slot class structure. A glyph slot is a */\r
+ /* container where individual glyphs can be loaded, be they in */\r
+ /* outline or bitmap format. */\r
+ /* */\r
+ /* <Fields> */\r
+ /* library :: A handle to the FreeType library instance */\r
+ /* this slot belongs to. */\r
+ /* */\r
+ /* face :: A handle to the parent face object. */\r
+ /* */\r
+ /* next :: In some cases (like some font tools), several */\r
+ /* glyph slots per face object can be a good */\r
+ /* thing. As this is rare, the glyph slots are */\r
+ /* listed through a direct, single-linked list */\r
+ /* using its `next' field. */\r
+ /* */\r
+ /* generic :: A typeless pointer which is unused by the */\r
+ /* FreeType library or any of its drivers. It */\r
+ /* can be used by client applications to link */\r
+ /* their own data to each glyph slot object. */\r
+ /* */\r
+ /* metrics :: The metrics of the last loaded glyph in the */\r
+ /* slot. The returned values depend on the last */\r
+ /* load flags (see the @FT_Load_Glyph API */\r
+ /* function) and can be expressed either in 26.6 */\r
+ /* fractional pixels or font units. */\r
+ /* */\r
+ /* Note that even when the glyph image is */\r
+ /* transformed, the metrics are not. */\r
+ /* */\r
+ /* linearHoriAdvance :: The advance width of the unhinted glyph. */\r
+ /* Its value is expressed in 16.16 fractional */\r
+ /* pixels, unless @FT_LOAD_LINEAR_DESIGN is set */\r
+ /* when loading the glyph. This field can be */\r
+ /* important to perform correct WYSIWYG layout. */\r
+ /* Only relevant for outline glyphs. */\r
+ /* */\r
+ /* linearVertAdvance :: The advance height of the unhinted glyph. */\r
+ /* Its value is expressed in 16.16 fractional */\r
+ /* pixels, unless @FT_LOAD_LINEAR_DESIGN is set */\r
+ /* when loading the glyph. This field can be */\r
+ /* important to perform correct WYSIWYG layout. */\r
+ /* Only relevant for outline glyphs. */\r
+ /* */\r
+ /* advance :: This is the transformed advance width for the */\r
+ /* glyph. */\r
+ /* */\r
+ /* format :: This field indicates the format of the image */\r
+ /* contained in the glyph slot. Typically */\r
+ /* @FT_GLYPH_FORMAT_BITMAP, */\r
+ /* @FT_GLYPH_FORMAT_OUTLINE, or */\r
+ /* @FT_GLYPH_FORMAT_COMPOSITE, but others are */\r
+ /* possible. */\r
+ /* */\r
+ /* bitmap :: This field is used as a bitmap descriptor */\r
+ /* when the slot format is */\r
+ /* @FT_GLYPH_FORMAT_BITMAP. Note that the */\r
+ /* address and content of the bitmap buffer can */\r
+ /* change between calls of @FT_Load_Glyph and a */\r
+ /* few other functions. */\r
+ /* */\r
+ /* bitmap_left :: This is the bitmap's left bearing expressed */\r
+ /* in integer pixels. Of course, this is only */\r
+ /* valid if the format is */\r
+ /* @FT_GLYPH_FORMAT_BITMAP. */\r
+ /* */\r
+ /* bitmap_top :: This is the bitmap's top bearing expressed in */\r
+ /* integer pixels. Remember that this is the */\r
+ /* distance from the baseline to the top-most */\r
+ /* glyph scanline, upwards y-coordinates being */\r
+ /* *positive*. */\r
+ /* */\r
+ /* outline :: The outline descriptor for the current glyph */\r
+ /* image if its format is */\r
+ /* @FT_GLYPH_FORMAT_OUTLINE. Once a glyph is */\r
+ /* loaded, `outline' can be transformed, */\r
+ /* distorted, embolded, etc. However, it must */\r
+ /* not be freed. */\r
+ /* */\r
+ /* num_subglyphs :: The number of subglyphs in a composite glyph. */\r
+ /* This field is only valid for the composite */\r
+ /* glyph format that should normally only be */\r
+ /* loaded with the @FT_LOAD_NO_RECURSE flag. */\r
+ /* For now this is internal to FreeType. */\r
+ /* */\r
+ /* subglyphs :: An array of subglyph descriptors for */\r
+ /* composite glyphs. There are `num_subglyphs' */\r
+ /* elements in there. Currently internal to */\r
+ /* FreeType. */\r
+ /* */\r
+ /* control_data :: Certain font drivers can also return the */\r
+ /* control data for a given glyph image (e.g. */\r
+ /* TrueType bytecode, Type 1 charstrings, etc.). */\r
+ /* This field is a pointer to such data. */\r
+ /* */\r
+ /* control_len :: This is the length in bytes of the control */\r
+ /* data. */\r
+ /* */\r
+ /* other :: Really wicked formats can use this pointer to */\r
+ /* present their own glyph image to client */\r
+ /* applications. Note that the application */\r
+ /* needs to know about the image format. */\r
+ /* */\r
+ /* lsb_delta :: The difference between hinted and unhinted */\r
+ /* left side bearing while autohinting is */\r
+ /* active. Zero otherwise. */\r
+ /* */\r
+ /* rsb_delta :: The difference between hinted and unhinted */\r
+ /* right side bearing while autohinting is */\r
+ /* active. Zero otherwise. */\r
+ /* */\r
+ /* <Note> */\r
+ /* If @FT_Load_Glyph is called with default flags (see */\r
+ /* @FT_LOAD_DEFAULT) the glyph image is loaded in the glyph slot in */\r
+ /* its native format (e.g., an outline glyph for TrueType and Type 1 */\r
+ /* formats). */\r
+ /* */\r
+ /* This image can later be converted into a bitmap by calling */\r
+ /* @FT_Render_Glyph. This function finds the current renderer for */\r
+ /* the native image's format then invokes it. */\r
+ /* */\r
+ /* The renderer is in charge of transforming the native image through */\r
+ /* the slot's face transformation fields, then convert it into a */\r
+ /* bitmap that is returned in `slot->bitmap'. */\r
+ /* */\r
+ /* Note that `slot->bitmap_left' and `slot->bitmap_top' are also used */\r
+ /* to specify the position of the bitmap relative to the current pen */\r
+ /* position (e.g., coordinates (0,0) on the baseline). Of course, */\r
+ /* `slot->format' is also changed to @FT_GLYPH_FORMAT_BITMAP. */\r
+ /* */\r
+ /* <Note> */\r
+ /* Here a small pseudo code fragment which shows how to use */\r
+ /* `lsb_delta' and `rsb_delta': */\r
+ /* */\r
+ /* { */\r
+ /* FT_Pos origin_x = 0; */\r
+ /* FT_Pos prev_rsb_delta = 0; */\r
+ /* */\r
+ /* */\r
+ /* for all glyphs do */\r
+ /* <compute kern between current and previous glyph and add it to */\r
+ /* `origin_x'> */\r
+ /* */\r
+ /* <load glyph with `FT_Load_Glyph'> */\r
+ /* */\r
+ /* if ( prev_rsb_delta - face->glyph->lsb_delta >= 32 ) */\r
+ /* origin_x -= 64; */\r
+ /* else if ( prev_rsb_delta - face->glyph->lsb_delta < -32 ) */\r
+ /* origin_x += 64; */\r
+ /* */\r
+ /* prev_rsb_delta = face->glyph->rsb_delta; */\r
+ /* */\r
+ /* <save glyph image, or render glyph, or ...> */\r
+ /* */\r
+ /* origin_x += face->glyph->advance.x; */\r
+ /* endfor */\r
+ /* } */\r
+ /* */\r
+ typedef struct FT_GlyphSlotRec_\r
+ {\r
+ FT_Library library;\r
+ FT_Face face;\r
+ FT_GlyphSlot next;\r
+ FT_UInt reserved; /* retained for binary compatibility */\r
+ FT_Generic generic;\r
+\r
+ FT_Glyph_Metrics metrics;\r
+ FT_Fixed linearHoriAdvance;\r
+ FT_Fixed linearVertAdvance;\r
+ FT_Vector advance;\r
+\r
+ FT_Glyph_Format format;\r
+\r
+ FT_Bitmap bitmap;\r
+ FT_Int bitmap_left;\r
+ FT_Int bitmap_top;\r
+\r
+ FT_Outline outline;\r
+\r
+ FT_UInt num_subglyphs;\r
+ FT_SubGlyph subglyphs;\r
+\r
+ void* control_data;\r
+ long control_len;\r
+\r
+ FT_Pos lsb_delta;\r
+ FT_Pos rsb_delta;\r
+\r
+ void* other;\r
+\r
+ FT_Slot_Internal internal;\r
+\r
+ } FT_GlyphSlotRec;\r
+\r
+\r
+ /*************************************************************************/\r
+ /*************************************************************************/\r
+ /* */\r
+ /* F U N C T I O N S */\r
+ /* */\r
+ /*************************************************************************/\r
+ /*************************************************************************/\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Init_FreeType */\r
+ /* */\r
+ /* <Description> */\r
+ /* Initialize a new FreeType library object. The set of modules */\r
+ /* that are registered by this function is determined at build time. */\r
+ /* */\r
+ /* <Output> */\r
+ /* alibrary :: A handle to a new library object. */\r
+ /* */\r
+ /* <Return> */\r
+ /* FreeType error code. 0 means success. */\r
+ /* */\r
+ FT_EXPORT( FT_Error )\r
+ FT_Init_FreeType( FT_Library *alibrary );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Done_FreeType */\r
+ /* */\r
+ /* <Description> */\r
+ /* Destroy a given FreeType library object and all of its children, */\r
+ /* including resources, drivers, faces, sizes, etc. */\r
+ /* */\r
+ /* <Input> */\r
+ /* library :: A handle to the target library object. */\r
+ /* */\r
+ /* <Return> */\r
+ /* FreeType error code. 0 means success. */\r
+ /* */\r
+ FT_EXPORT( FT_Error )\r
+ FT_Done_FreeType( FT_Library library );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Enum> */\r
+ /* FT_OPEN_XXX */\r
+ /* */\r
+ /* <Description> */\r
+ /* A list of bit-field constants used within the `flags' field of the */\r
+ /* @FT_Open_Args structure. */\r
+ /* */\r
+ /* <Values> */\r
+ /* FT_OPEN_MEMORY :: This is a memory-based stream. */\r
+ /* */\r
+ /* FT_OPEN_STREAM :: Copy the stream from the `stream' field. */\r
+ /* */\r
+ /* FT_OPEN_PATHNAME :: Create a new input stream from a C */\r
+ /* path name. */\r
+ /* */\r
+ /* FT_OPEN_DRIVER :: Use the `driver' field. */\r
+ /* */\r
+ /* FT_OPEN_PARAMS :: Use the `num_params' and `params' fields. */\r
+ /* */\r
+ /* ft_open_memory :: Deprecated; use @FT_OPEN_MEMORY instead. */\r
+ /* */\r
+ /* ft_open_stream :: Deprecated; use @FT_OPEN_STREAM instead. */\r
+ /* */\r
+ /* ft_open_pathname :: Deprecated; use @FT_OPEN_PATHNAME instead. */\r
+ /* */\r
+ /* ft_open_driver :: Deprecated; use @FT_OPEN_DRIVER instead. */\r
+ /* */\r
+ /* ft_open_params :: Deprecated; use @FT_OPEN_PARAMS instead. */\r
+ /* */\r
+ /* <Note> */\r
+ /* The `FT_OPEN_MEMORY', `FT_OPEN_STREAM', and `FT_OPEN_PATHNAME' */\r
+ /* flags are mutually exclusive. */\r
+ /* */\r
+#define FT_OPEN_MEMORY 0x1\r
+#define FT_OPEN_STREAM 0x2\r
+#define FT_OPEN_PATHNAME 0x4\r
+#define FT_OPEN_DRIVER 0x8\r
+#define FT_OPEN_PARAMS 0x10\r
+\r
+#define ft_open_memory FT_OPEN_MEMORY /* deprecated */\r
+#define ft_open_stream FT_OPEN_STREAM /* deprecated */\r
+#define ft_open_pathname FT_OPEN_PATHNAME /* deprecated */\r
+#define ft_open_driver FT_OPEN_DRIVER /* deprecated */\r
+#define ft_open_params FT_OPEN_PARAMS /* deprecated */\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Struct> */\r
+ /* FT_Parameter */\r
+ /* */\r
+ /* <Description> */\r
+ /* A simple structure used to pass more or less generic parameters */\r
+ /* to @FT_Open_Face. */\r
+ /* */\r
+ /* <Fields> */\r
+ /* tag :: A four-byte identification tag. */\r
+ /* */\r
+ /* data :: A pointer to the parameter data. */\r
+ /* */\r
+ /* <Note> */\r
+ /* The ID and function of parameters are driver-specific. */\r
+ /* */\r
+ typedef struct FT_Parameter_\r
+ {\r
+ FT_ULong tag;\r
+ FT_Pointer data;\r
+\r
+ } FT_Parameter;\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Struct> */\r
+ /* FT_Open_Args */\r
+ /* */\r
+ /* <Description> */\r
+ /* A structure used to indicate how to open a new font file or */\r
+ /* stream. A pointer to such a structure can be used as a parameter */\r
+ /* for the functions @FT_Open_Face and @FT_Attach_Stream. */\r
+ /* */\r
+ /* <Fields> */\r
+ /* flags :: A set of bit flags indicating how to use the */\r
+ /* structure. */\r
+ /* */\r
+ /* memory_base :: The first byte of the file in memory. */\r
+ /* */\r
+ /* memory_size :: The size in bytes of the file in memory. */\r
+ /* */\r
+ /* pathname :: A pointer to an 8-bit file pathname. */\r
+ /* */\r
+ /* stream :: A handle to a source stream object. */\r
+ /* */\r
+ /* driver :: This field is exclusively used by @FT_Open_Face; */\r
+ /* it simply specifies the font driver to use to open */\r
+ /* the face. If set to 0, FreeType tries to load the */\r
+ /* face with each one of the drivers in its list. */\r
+ /* */\r
+ /* num_params :: The number of extra parameters. */\r
+ /* */\r
+ /* params :: Extra parameters passed to the font driver when */\r
+ /* opening a new face. */\r
+ /* */\r
+ /* <Note> */\r
+ /* The stream type is determined by the contents of `flags' which */\r
+ /* are tested in the following order by @FT_Open_Face: */\r
+ /* */\r
+ /* If the `FT_OPEN_MEMORY' bit is set, assume that this is a */\r
+ /* memory file of `memory_size' bytes, located at `memory_address'. */\r
+ /* The data are are not copied, and the client is responsible for */\r
+ /* releasing and destroying them _after_ the corresponding call to */\r
+ /* @FT_Done_Face. */\r
+ /* */\r
+ /* Otherwise, if the `FT_OPEN_STREAM' bit is set, assume that a */\r
+ /* custom input stream `stream' is used. */\r
+ /* */\r
+ /* Otherwise, if the `FT_OPEN_PATHNAME' bit is set, assume that this */\r
+ /* is a normal file and use `pathname' to open it. */\r
+ /* */\r
+ /* If the `FT_OPEN_DRIVER' bit is set, @FT_Open_Face only tries to */\r
+ /* open the file with the driver whose handler is in `driver'. */\r
+ /* */\r
+ /* If the `FT_OPEN_PARAMS' bit is set, the parameters given by */\r
+ /* `num_params' and `params' is used. They are ignored otherwise. */\r
+ /* */\r
+ /* Ideally, both the `pathname' and `params' fields should be tagged */\r
+ /* as `const'; this is missing for API backwards compatibility. With */\r
+ /* other words, applications should treat them as read-only. */\r
+ /* */\r
+ typedef struct FT_Open_Args_\r
+ {\r
+ FT_UInt flags;\r
+ const FT_Byte* memory_base;\r
+ FT_Long memory_size;\r
+ FT_String* pathname;\r
+ FT_Stream stream;\r
+ FT_Module driver;\r
+ FT_Int num_params;\r
+ FT_Parameter* params;\r
+\r
+ } FT_Open_Args;\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_New_Face */\r
+ /* */\r
+ /* <Description> */\r
+ /* This function calls @FT_Open_Face to open a font by its pathname. */\r
+ /* */\r
+ /* <InOut> */\r
+ /* library :: A handle to the library resource. */\r
+ /* */\r
+ /* <Input> */\r
+ /* pathname :: A path to the font file. */\r
+ /* */\r
+ /* face_index :: The index of the face within the font. The first */\r
+ /* face has index 0. */\r
+ /* */\r
+ /* <Output> */\r
+ /* aface :: A handle to a new face object. If `face_index' is */\r
+ /* greater than or equal to zero, it must be non-NULL. */\r
+ /* See @FT_Open_Face for more details. */\r
+ /* */\r
+ /* <Return> */\r
+ /* FreeType error code. 0 means success. */\r
+ /* */\r
+ FT_EXPORT( FT_Error )\r
+ FT_New_Face( FT_Library library,\r
+ const char* filepathname,\r
+ FT_Long face_index,\r
+ FT_Face *aface );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_New_Memory_Face */\r
+ /* */\r
+ /* <Description> */\r
+ /* This function calls @FT_Open_Face to open a font which has been */\r
+ /* loaded into memory. */\r
+ /* */\r
+ /* <InOut> */\r
+ /* library :: A handle to the library resource. */\r
+ /* */\r
+ /* <Input> */\r
+ /* file_base :: A pointer to the beginning of the font data. */\r
+ /* */\r
+ /* file_size :: The size of the memory chunk used by the font data. */\r
+ /* */\r
+ /* face_index :: The index of the face within the font. The first */\r
+ /* face has index 0. */\r
+ /* */\r
+ /* <Output> */\r
+ /* aface :: A handle to a new face object. If `face_index' is */\r
+ /* greater than or equal to zero, it must be non-NULL. */\r
+ /* See @FT_Open_Face for more details. */\r
+ /* */\r
+ /* <Return> */\r
+ /* FreeType error code. 0 means success. */\r
+ /* */\r
+ /* <Note> */\r
+ /* You must not deallocate the memory before calling @FT_Done_Face. */\r
+ /* */\r
+ FT_EXPORT( FT_Error )\r
+ FT_New_Memory_Face( FT_Library library,\r
+ const FT_Byte* file_base,\r
+ FT_Long file_size,\r
+ FT_Long face_index,\r
+ FT_Face *aface );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Open_Face */\r
+ /* */\r
+ /* <Description> */\r
+ /* Create a face object from a given resource described by */\r
+ /* @FT_Open_Args. */\r
+ /* */\r
+ /* <InOut> */\r
+ /* library :: A handle to the library resource. */\r
+ /* */\r
+ /* <Input> */\r
+ /* args :: A pointer to an `FT_Open_Args' structure which must */\r
+ /* be filled by the caller. */\r
+ /* */\r
+ /* face_index :: The index of the face within the font. The first */\r
+ /* face has index 0. */\r
+ /* */\r
+ /* <Output> */\r
+ /* aface :: A handle to a new face object. If `face_index' is */\r
+ /* greater than or equal to zero, it must be non-NULL. */\r
+ /* See note below. */\r
+ /* */\r
+ /* <Return> */\r
+ /* FreeType error code. 0 means success. */\r
+ /* */\r
+ /* <Note> */\r
+ /* Unlike FreeType 1.x, this function automatically creates a glyph */\r
+ /* slot for the face object which can be accessed directly through */\r
+ /* `face->glyph'. */\r
+ /* */\r
+ /* FT_Open_Face can be used to quickly check whether the font */\r
+ /* format of a given font resource is supported by FreeType. If the */\r
+ /* `face_index' field is negative, the function's return value is 0 */\r
+ /* if the font format is recognized, or non-zero otherwise; */\r
+ /* the function returns a more or less empty face handle in `*aface' */\r
+ /* (if `aface' isn't NULL). The only useful field in this special */\r
+ /* case is `face->num_faces' which gives the number of faces within */\r
+ /* the font file. After examination, the returned @FT_Face structure */\r
+ /* should be deallocated with a call to @FT_Done_Face. */\r
+ /* */\r
+ /* Each new face object created with this function also owns a */\r
+ /* default @FT_Size object, accessible as `face->size'. */\r
+ /* */\r
+ FT_EXPORT( FT_Error )\r
+ FT_Open_Face( FT_Library library,\r
+ const FT_Open_Args* args,\r
+ FT_Long face_index,\r
+ FT_Face *aface );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Attach_File */\r
+ /* */\r
+ /* <Description> */\r
+ /* This function calls @FT_Attach_Stream to attach a file. */\r
+ /* */\r
+ /* <InOut> */\r
+ /* face :: The target face object. */\r
+ /* */\r
+ /* <Input> */\r
+ /* filepathname :: The pathname. */\r
+ /* */\r
+ /* <Return> */\r
+ /* FreeType error code. 0 means success. */\r
+ /* */\r
+ FT_EXPORT( FT_Error )\r
+ FT_Attach_File( FT_Face face,\r
+ const char* filepathname );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Attach_Stream */\r
+ /* */\r
+ /* <Description> */\r
+ /* `Attach' data to a face object. Normally, this is used to read */\r
+ /* additional information for the face object. For example, you can */\r
+ /* attach an AFM file that comes with a Type 1 font to get the */\r
+ /* kerning values and other metrics. */\r
+ /* */\r
+ /* <InOut> */\r
+ /* face :: The target face object. */\r
+ /* */\r
+ /* <Input> */\r
+ /* parameters :: A pointer to @FT_Open_Args which must be filled by */\r
+ /* the caller. */\r
+ /* */\r
+ /* <Return> */\r
+ /* FreeType error code. 0 means success. */\r
+ /* */\r
+ /* <Note> */\r
+ /* The meaning of the `attach' (i.e., what really happens when the */\r
+ /* new file is read) is not fixed by FreeType itself. It really */\r
+ /* depends on the font format (and thus the font driver). */\r
+ /* */\r
+ /* Client applications are expected to know what they are doing */\r
+ /* when invoking this function. Most drivers simply do not implement */\r
+ /* file attachments. */\r
+ /* */\r
+ FT_EXPORT( FT_Error )\r
+ FT_Attach_Stream( FT_Face face,\r
+ FT_Open_Args* parameters );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Done_Face */\r
+ /* */\r
+ /* <Description> */\r
+ /* Discard a given face object, as well as all of its child slots and */\r
+ /* sizes. */\r
+ /* */\r
+ /* <Input> */\r
+ /* face :: A handle to a target face object. */\r
+ /* */\r
+ /* <Return> */\r
+ /* FreeType error code. 0 means success. */\r
+ /* */\r
+ FT_EXPORT( FT_Error )\r
+ FT_Done_Face( FT_Face face );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Select_Size */\r
+ /* */\r
+ /* <Description> */\r
+ /* Select a bitmap strike. */\r
+ /* */\r
+ /* <InOut> */\r
+ /* face :: A handle to a target face object. */\r
+ /* */\r
+ /* <Input> */\r
+ /* strike_index :: The index of the bitmap strike in the */\r
+ /* `available_sizes' field of @FT_FaceRec structure. */\r
+ /* */\r
+ /* <Return> */\r
+ /* FreeType error code. 0 means success. */\r
+ /* */\r
+ FT_EXPORT( FT_Error )\r
+ FT_Select_Size( FT_Face face,\r
+ FT_Int strike_index );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Enum> */\r
+ /* FT_Size_Request_Type */\r
+ /* */\r
+ /* <Description> */\r
+ /* An enumeration type that lists the supported size request types. */\r
+ /* */\r
+ /* <Values> */\r
+ /* FT_SIZE_REQUEST_TYPE_NOMINAL :: */\r
+ /* The nominal size. The `units_per_EM' field of @FT_FaceRec is */\r
+ /* used to determine both scaling values. */\r
+ /* */\r
+ /* FT_SIZE_REQUEST_TYPE_REAL_DIM :: */\r
+ /* The real dimension. The sum of the the `Ascender' and (minus */\r
+ /* of) the `Descender' fields of @FT_FaceRec are used to determine */\r
+ /* both scaling values. */\r
+ /* */\r
+ /* FT_SIZE_REQUEST_TYPE_BBOX :: */\r
+ /* The font bounding box. The width and height of the `bbox' field */\r
+ /* of @FT_FaceRec are used to determine the horizontal and vertical */\r
+ /* scaling value, respectively. */\r
+ /* */\r
+ /* FT_SIZE_REQUEST_TYPE_CELL :: */\r
+ /* The `max_advance_width' field of @FT_FaceRec is used to */\r
+ /* determine the horizontal scaling value; the vertical scaling */\r
+ /* value is determined the same way as */\r
+ /* @FT_SIZE_REQUEST_TYPE_REAL_DIM does. Finally, both scaling */\r
+ /* values are set to the smaller one. This type is useful if you */\r
+ /* want to specify the font size for, say, a window of a given */\r
+ /* dimension and 80x24 cells. */\r
+ /* */\r
+ /* FT_SIZE_REQUEST_TYPE_SCALES :: */\r
+ /* Specify the scaling values directly. */\r
+ /* */\r
+ /* <Note> */\r
+ /* The above descriptions only apply to scalable formats. For bitmap */\r
+ /* formats, the behaviour is up to the driver. */\r
+ /* */\r
+ /* See the note section of @FT_Size_Metrics if you wonder how size */\r
+ /* requesting relates to scaling values. */\r
+ /* */\r
+ typedef enum FT_Size_Request_Type_\r
+ {\r
+ FT_SIZE_REQUEST_TYPE_NOMINAL,\r
+ FT_SIZE_REQUEST_TYPE_REAL_DIM,\r
+ FT_SIZE_REQUEST_TYPE_BBOX,\r
+ FT_SIZE_REQUEST_TYPE_CELL,\r
+ FT_SIZE_REQUEST_TYPE_SCALES,\r
+\r
+ FT_SIZE_REQUEST_TYPE_MAX\r
+\r
+ } FT_Size_Request_Type;\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Struct> */\r
+ /* FT_Size_RequestRec */\r
+ /* */\r
+ /* <Description> */\r
+ /* A structure used to model a size request. */\r
+ /* */\r
+ /* <Fields> */\r
+ /* type :: See @FT_Size_Request_Type. */\r
+ /* */\r
+ /* width :: The desired width. */\r
+ /* */\r
+ /* height :: The desired height. */\r
+ /* */\r
+ /* horiResolution :: The horizontal resolution. If set to zero, */\r
+ /* `width' is treated as a 26.6 fractional pixel */\r
+ /* value. */\r
+ /* */\r
+ /* vertResolution :: The vertical resolution. If set to zero, */\r
+ /* `height' is treated as a 26.6 fractional pixel */\r
+ /* value. */\r
+ /* */\r
+ /* <Note> */\r
+ /* If `width' is zero, then the horizontal scaling value is set */\r
+ /* equal to the vertical scaling value, and vice versa. */\r
+ /* */\r
+ typedef struct FT_Size_RequestRec_\r
+ {\r
+ FT_Size_Request_Type type;\r
+ FT_Long width;\r
+ FT_Long height;\r
+ FT_UInt horiResolution;\r
+ FT_UInt vertResolution;\r
+\r
+ } FT_Size_RequestRec, *FT_Size_Request;\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Request_Size */\r
+ /* */\r
+ /* <Description> */\r
+ /* Resize the scale of the active @FT_Size object in a face. */\r
+ /* */\r
+ /* <InOut> */\r
+ /* face :: A handle to a target face object. */\r
+ /* */\r
+ /* <Input> */\r
+ /* req :: A pointer to a @FT_Size_RequestRec. */\r
+ /* */\r
+ /* <Return> */\r
+ /* FreeType error code. 0 means success. */\r
+ /* */\r
+ /* <Note> */\r
+ /* Although drivers may select the bitmap strike matching the */\r
+ /* request, you should not rely on this if you intend to select a */\r
+ /* particular bitmap strike. Use @FT_Select_Size instead in that */\r
+ /* case. */\r
+ /* */\r
+ FT_EXPORT( FT_Error )\r
+ FT_Request_Size( FT_Face face,\r
+ FT_Size_Request req );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Set_Char_Size */\r
+ /* */\r
+ /* <Description> */\r
+ /* This function calls @FT_Request_Size to request the nominal size */\r
+ /* (in points). */\r
+ /* */\r
+ /* <InOut> */\r
+ /* face :: A handle to a target face object. */\r
+ /* */\r
+ /* <Input> */\r
+ /* char_width :: The nominal width, in 26.6 fractional points. */\r
+ /* */\r
+ /* char_height :: The nominal height, in 26.6 fractional points. */\r
+ /* */\r
+ /* horz_resolution :: The horizontal resolution in dpi. */\r
+ /* */\r
+ /* vert_resolution :: The vertical resolution in dpi. */\r
+ /* */\r
+ /* <Return> */\r
+ /* FreeType error code. 0 means success. */\r
+ /* */\r
+ /* <Note> */\r
+ /* If either the character width or height is zero, it is set equal */\r
+ /* to the other value. */\r
+ /* */\r
+ /* If either the horizontal or vertical resolution is zero, it is set */\r
+ /* equal to the other value. */\r
+ /* */\r
+ /* A character width or height smaller than 1pt is set to 1pt; if */\r
+ /* both resolution values are zero, they are set to 72dpi. */\r
+ /* */\r
+\r
+ FT_EXPORT( FT_Error )\r
+ FT_Set_Char_Size( FT_Face face,\r
+ FT_F26Dot6 char_width,\r
+ FT_F26Dot6 char_height,\r
+ FT_UInt horz_resolution,\r
+ FT_UInt vert_resolution );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Set_Pixel_Sizes */\r
+ /* */\r
+ /* <Description> */\r
+ /* This function calls @FT_Request_Size to request the nominal size */\r
+ /* (in pixels). */\r
+ /* */\r
+ /* <InOut> */\r
+ /* face :: A handle to the target face object. */\r
+ /* */\r
+ /* <Input> */\r
+ /* pixel_width :: The nominal width, in pixels. */\r
+ /* */\r
+ /* pixel_height :: The nominal height, in pixels. */\r
+ /* */\r
+ /* <Return> */\r
+ /* FreeType error code. 0 means success. */\r
+ /* */\r
+ FT_EXPORT( FT_Error )\r
+ FT_Set_Pixel_Sizes( FT_Face face,\r
+ FT_UInt pixel_width,\r
+ FT_UInt pixel_height );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Load_Glyph */\r
+ /* */\r
+ /* <Description> */\r
+ /* A function used to load a single glyph into the glyph slot of a */\r
+ /* face object. */\r
+ /* */\r
+ /* <InOut> */\r
+ /* face :: A handle to the target face object where the glyph */\r
+ /* is loaded. */\r
+ /* */\r
+ /* <Input> */\r
+ /* glyph_index :: The index of the glyph in the font file. For */\r
+ /* CID-keyed fonts (either in PS or in CFF format) */\r
+ /* this argument specifies the CID value. */\r
+ /* */\r
+ /* load_flags :: A flag indicating what to load for this glyph. The */\r
+ /* @FT_LOAD_XXX constants can be used to control the */\r
+ /* glyph loading process (e.g., whether the outline */\r
+ /* should be scaled, whether to load bitmaps or not, */\r
+ /* whether to hint the outline, etc). */\r
+ /* */\r
+ /* <Return> */\r
+ /* FreeType error code. 0 means success. */\r
+ /* */\r
+ /* <Note> */\r
+ /* The loaded glyph may be transformed. See @FT_Set_Transform for */\r
+ /* the details. */\r
+ /* */\r
+ FT_EXPORT( FT_Error )\r
+ FT_Load_Glyph( FT_Face face,\r
+ FT_UInt glyph_index,\r
+ FT_Int32 load_flags );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Load_Char */\r
+ /* */\r
+ /* <Description> */\r
+ /* A function used to load a single glyph into the glyph slot of a */\r
+ /* face object, according to its character code. */\r
+ /* */\r
+ /* <InOut> */\r
+ /* face :: A handle to a target face object where the glyph */\r
+ /* is loaded. */\r
+ /* */\r
+ /* <Input> */\r
+ /* char_code :: The glyph's character code, according to the */\r
+ /* current charmap used in the face. */\r
+ /* */\r
+ /* load_flags :: A flag indicating what to load for this glyph. The */\r
+ /* @FT_LOAD_XXX constants can be used to control the */\r
+ /* glyph loading process (e.g., whether the outline */\r
+ /* should be scaled, whether to load bitmaps or not, */\r
+ /* whether to hint the outline, etc). */\r
+ /* */\r
+ /* <Return> */\r
+ /* FreeType error code. 0 means success. */\r
+ /* */\r
+ /* <Note> */\r
+ /* This function simply calls @FT_Get_Char_Index and @FT_Load_Glyph. */\r
+ /* */\r
+ FT_EXPORT( FT_Error )\r
+ FT_Load_Char( FT_Face face,\r
+ FT_ULong char_code,\r
+ FT_Int32 load_flags );\r
+\r
+\r
+ /*************************************************************************\r
+ *\r
+ * @enum:\r
+ * FT_LOAD_XXX\r
+ *\r
+ * @description:\r
+ * A list of bit-field constants used with @FT_Load_Glyph to indicate\r
+ * what kind of operations to perform during glyph loading.\r
+ *\r
+ * @values:\r
+ * FT_LOAD_DEFAULT ::\r
+ * Corresponding to 0, this value is used as the default glyph load\r
+ * operation. In this case, the following happens:\r
+ *\r
+ * 1. FreeType looks for a bitmap for the glyph corresponding to the\r
+ * face's current size. If one is found, the function returns.\r
+ * The bitmap data can be accessed from the glyph slot (see note\r
+ * below).\r
+ *\r
+ * 2. If no embedded bitmap is searched or found, FreeType looks for a\r
+ * scalable outline. If one is found, it is loaded from the font\r
+ * file, scaled to device pixels, then `hinted' to the pixel grid\r
+ * in order to optimize it. The outline data can be accessed from\r
+ * the glyph slot (see note below).\r
+ *\r
+ * Note that by default, the glyph loader doesn't render outlines into\r
+ * bitmaps. The following flags are used to modify this default\r
+ * behaviour to more specific and useful cases.\r
+ *\r
+ * FT_LOAD_NO_SCALE ::\r
+ * Don't scale the outline glyph loaded, but keep it in font units.\r
+ *\r
+ * This flag implies @FT_LOAD_NO_HINTING and @FT_LOAD_NO_BITMAP, and\r
+ * unsets @FT_LOAD_RENDER.\r
+ *\r
+ * FT_LOAD_NO_HINTING ::\r
+ * Disable hinting. This generally generates `blurrier' bitmap glyph\r
+ * when the glyph is rendered in any of the anti-aliased modes. See\r
+ * also the note below.\r
+ *\r
+ * This flag is implied by @FT_LOAD_NO_SCALE.\r
+ *\r
+ * FT_LOAD_RENDER ::\r
+ * Call @FT_Render_Glyph after the glyph is loaded. By default, the\r
+ * glyph is rendered in @FT_RENDER_MODE_NORMAL mode. This can be\r
+ * overridden by @FT_LOAD_TARGET_XXX or @FT_LOAD_MONOCHROME.\r
+ *\r
+ * This flag is unset by @FT_LOAD_NO_SCALE.\r
+ *\r
+ * FT_LOAD_NO_BITMAP ::\r
+ * Ignore bitmap strikes when loading. Bitmap-only fonts ignore this\r
+ * flag.\r
+ *\r
+ * @FT_LOAD_NO_SCALE always sets this flag.\r
+ *\r
+ * FT_LOAD_VERTICAL_LAYOUT ::\r
+ * Load the glyph for vertical text layout. _Don't_ use it as it is\r
+ * problematic currently.\r
+ *\r
+ * FT_LOAD_FORCE_AUTOHINT ::\r
+ * Indicates that the auto-hinter is preferred over the font's native\r
+ * hinter. See also the note below.\r
+ *\r
+ * FT_LOAD_CROP_BITMAP ::\r
+ * Indicates that the font driver should crop the loaded bitmap glyph\r
+ * (i.e., remove all space around its black bits). Not all drivers\r
+ * implement this.\r
+ *\r
+ * FT_LOAD_PEDANTIC ::\r
+ * Indicates that the font driver should perform pedantic verifications\r
+ * during glyph loading. This is mostly used to detect broken glyphs\r
+ * in fonts. By default, FreeType tries to handle broken fonts also.\r
+ *\r
+ * FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH ::\r
+ * Indicates that the font driver should ignore the global advance\r
+ * width defined in the font. By default, that value is used as the\r
+ * advance width for all glyphs when the face has\r
+ * @FT_FACE_FLAG_FIXED_WIDTH set.\r
+ *\r
+ * This flag exists for historical reasons (to support buggy CJK\r
+ * fonts).\r
+ *\r
+ * FT_LOAD_NO_RECURSE ::\r
+ * This flag is only used internally. It merely indicates that the\r
+ * font driver should not load composite glyphs recursively. Instead,\r
+ * it should set the `num_subglyph' and `subglyphs' values of the\r
+ * glyph slot accordingly, and set `glyph->format' to\r
+ * @FT_GLYPH_FORMAT_COMPOSITE.\r
+ *\r
+ * The description of sub-glyphs is not available to client\r
+ * applications for now.\r
+ *\r
+ * This flag implies @FT_LOAD_NO_SCALE and @FT_LOAD_IGNORE_TRANSFORM.\r
+ *\r
+ * FT_LOAD_IGNORE_TRANSFORM ::\r
+ * Indicates that the transform matrix set by @FT_Set_Transform should\r
+ * be ignored.\r
+ *\r
+ * FT_LOAD_MONOCHROME ::\r
+ * This flag is used with @FT_LOAD_RENDER to indicate that you want to\r
+ * render an outline glyph to a 1-bit monochrome bitmap glyph, with\r
+ * 8 pixels packed into each byte of the bitmap data.\r
+ *\r
+ * Note that this has no effect on the hinting algorithm used. You\r
+ * should use @FT_LOAD_TARGET_MONO instead so that the\r
+ * monochrome-optimized hinting algorithm is used.\r
+ *\r
+ * FT_LOAD_LINEAR_DESIGN ::\r
+ * Indicates that the `linearHoriAdvance' and `linearVertAdvance'\r
+ * fields of @FT_GlyphSlotRec should be kept in font units. See\r
+ * @FT_GlyphSlotRec for details.\r
+ *\r
+ * FT_LOAD_NO_AUTOHINT ::\r
+ * Disable auto-hinter. See also the note below.\r
+ *\r
+ * @note:\r
+ * By default, hinting is enabled and the font's native hinter (see\r
+ * @FT_FACE_FLAG_HINTER) is preferred over the auto-hinter. You can\r
+ * disable hinting by setting @FT_LOAD_NO_HINTING or change the\r
+ * precedence by setting @FT_LOAD_FORCE_AUTOHINT. You can also set\r
+ * @FT_LOAD_NO_AUTOHINT in case you don't want the auto-hinter to be\r
+ * used at all.\r
+ *\r
+ * Besides deciding which hinter to use, you can also decide which\r
+ * hinting algorithm to use. See @FT_LOAD_TARGET_XXX for details.\r
+ */\r
+#define FT_LOAD_DEFAULT 0x0\r
+#define FT_LOAD_NO_SCALE 0x1\r
+#define FT_LOAD_NO_HINTING 0x2\r
+#define FT_LOAD_RENDER 0x4\r
+#define FT_LOAD_NO_BITMAP 0x8\r
+#define FT_LOAD_VERTICAL_LAYOUT 0x10\r
+#define FT_LOAD_FORCE_AUTOHINT 0x20\r
+#define FT_LOAD_CROP_BITMAP 0x40\r
+#define FT_LOAD_PEDANTIC 0x80\r
+#define FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH 0x200\r
+#define FT_LOAD_NO_RECURSE 0x400\r
+#define FT_LOAD_IGNORE_TRANSFORM 0x800\r
+#define FT_LOAD_MONOCHROME 0x1000\r
+#define FT_LOAD_LINEAR_DESIGN 0x2000\r
+\r
+ /* temporary hack! */\r
+#define FT_LOAD_SBITS_ONLY 0x4000\r
+#define FT_LOAD_NO_AUTOHINT 0x8000U\r
+\r
+ /* */\r
+\r
+\r
+ /**************************************************************************\r
+ *\r
+ * @enum:\r
+ * FT_LOAD_TARGET_XXX\r
+ *\r
+ * @description:\r
+ * A list of values that are used to select a specific hinting algorithm\r
+ * to use by the hinter. You should OR one of these values to your\r
+ * `load_flags' when calling @FT_Load_Glyph.\r
+ *\r
+ * Note that font's native hinters may ignore the hinting algorithm you\r
+ * have specified (e.g., the TrueType bytecode interpreter). You can set\r
+ * @FT_LOAD_FORCE_AUTOHINT to ensure that the auto-hinter is used.\r
+ *\r
+ * Also note that @FT_LOAD_TARGET_LIGHT is an exception, in that it\r
+ * always implies @FT_LOAD_FORCE_AUTOHINT.\r
+ *\r
+ * @values:\r
+ * FT_LOAD_TARGET_NORMAL ::\r
+ * This corresponds to the default hinting algorithm, optimized for\r
+ * standard gray-level rendering. For monochrome output, use\r
+ * @FT_LOAD_TARGET_MONO instead.\r
+ *\r
+ * FT_LOAD_TARGET_LIGHT ::\r
+ * A lighter hinting algorithm for non-monochrome modes. Many\r
+ * generated glyphs are more fuzzy but better resemble its original\r
+ * shape. A bit like rendering on Mac OS X.\r
+ *\r
+ * As a special exception, this target implies @FT_LOAD_FORCE_AUTOHINT.\r
+ *\r
+ * FT_LOAD_TARGET_MONO ::\r
+ * Strong hinting algorithm that should only be used for monochrome\r
+ * output. The result is probably unpleasant if the glyph is rendered\r
+ * in non-monochrome modes.\r
+ *\r
+ * FT_LOAD_TARGET_LCD ::\r
+ * A variant of @FT_LOAD_TARGET_NORMAL optimized for horizontally\r
+ * decimated LCD displays.\r
+ *\r
+ * FT_LOAD_TARGET_LCD_V ::\r
+ * A variant of @FT_LOAD_TARGET_NORMAL optimized for vertically\r
+ * decimated LCD displays.\r
+ *\r
+ * @note:\r
+ * You should use only _one_ of the FT_LOAD_TARGET_XXX values in your\r
+ * `load_flags'. They can't be ORed.\r
+ *\r
+ * If @FT_LOAD_RENDER is also set, the glyph is rendered in the\r
+ * corresponding mode (i.e., the mode which matches the used algorithm\r
+ * best) unless @FT_LOAD_MONOCHROME is set.\r
+ *\r
+ * You can use a hinting algorithm that doesn't correspond to the same\r
+ * rendering mode. As an example, it is possible to use the `light'\r
+ * hinting algorithm and have the results rendered in horizontal LCD\r
+ * pixel mode, with code like\r
+ *\r
+ * {\r
+ * FT_Load_Glyph( face, glyph_index,\r
+ * load_flags | FT_LOAD_TARGET_LIGHT );\r
+ *\r
+ * FT_Render_Glyph( face->glyph, FT_RENDER_MODE_LCD );\r
+ * }\r
+ */\r
+\r
+#define FT_LOAD_TARGET_( x ) ( (FT_Int32)( (x) & 15 ) << 16 )\r
+\r
+#define FT_LOAD_TARGET_NORMAL FT_LOAD_TARGET_( FT_RENDER_MODE_NORMAL )\r
+#define FT_LOAD_TARGET_LIGHT FT_LOAD_TARGET_( FT_RENDER_MODE_LIGHT )\r
+#define FT_LOAD_TARGET_MONO FT_LOAD_TARGET_( FT_RENDER_MODE_MONO )\r
+#define FT_LOAD_TARGET_LCD FT_LOAD_TARGET_( FT_RENDER_MODE_LCD )\r
+#define FT_LOAD_TARGET_LCD_V FT_LOAD_TARGET_( FT_RENDER_MODE_LCD_V )\r
+\r
+\r
+ /*\r
+ * @macro:\r
+ * FT_LOAD_TARGET_MODE\r
+ *\r
+ * @description:\r
+ * Return the @FT_Render_Mode corresponding to a given\r
+ * @FT_LOAD_TARGET_XXX value.\r
+ */\r
+\r
+#define FT_LOAD_TARGET_MODE( x ) ( (FT_Render_Mode)( ( (x) >> 16 ) & 15 ) )\r
+\r
+ /* */\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Set_Transform */\r
+ /* */\r
+ /* <Description> */\r
+ /* A function used to set the transformation that is applied to glyph */\r
+ /* images when they are loaded into a glyph slot through */\r
+ /* @FT_Load_Glyph. */\r
+ /* */\r
+ /* <InOut> */\r
+ /* face :: A handle to the source face object. */\r
+ /* */\r
+ /* <Input> */\r
+ /* matrix :: A pointer to the transformation's 2x2 matrix. Use 0 for */\r
+ /* the identity matrix. */\r
+ /* delta :: A pointer to the translation vector. Use 0 for the null */\r
+ /* vector. */\r
+ /* */\r
+ /* <Note> */\r
+ /* The transformation is only applied to scalable image formats after */\r
+ /* the glyph has been loaded. It means that hinting is unaltered by */\r
+ /* the transformation and is performed on the character size given in */\r
+ /* the last call to @FT_Set_Char_Size or @FT_Set_Pixel_Sizes. */\r
+ /* */\r
+ /* Note that this also transforms the `face.glyph.advance' field, but */\r
+ /* *not* the values in `face.glyph.metrics'. */\r
+ /* */\r
+ FT_EXPORT( void )\r
+ FT_Set_Transform( FT_Face face,\r
+ FT_Matrix* matrix,\r
+ FT_Vector* delta );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Enum> */\r
+ /* FT_Render_Mode */\r
+ /* */\r
+ /* <Description> */\r
+ /* An enumeration type that lists the render modes supported by */\r
+ /* FreeType 2. Each mode corresponds to a specific type of scanline */\r
+ /* conversion performed on the outline. */\r
+ /* */\r
+ /* For bitmap fonts the `bitmap->pixel_mode' field in the */\r
+ /* @FT_GlyphSlotRec structure gives the format of the returned */\r
+ /* bitmap. */\r
+ /* */\r
+ /* <Values> */\r
+ /* FT_RENDER_MODE_NORMAL :: */\r
+ /* This is the default render mode; it corresponds to 8-bit */\r
+ /* anti-aliased bitmaps, using 256 levels of opacity. */\r
+ /* */\r
+ /* FT_RENDER_MODE_LIGHT :: */\r
+ /* This is equivalent to @FT_RENDER_MODE_NORMAL. It is only */\r
+ /* defined as a separate value because render modes are also used */\r
+ /* indirectly to define hinting algorithm selectors. See */\r
+ /* @FT_LOAD_TARGET_XXX for details. */\r
+ /* */\r
+ /* FT_RENDER_MODE_MONO :: */\r
+ /* This mode corresponds to 1-bit bitmaps. */\r
+ /* */\r
+ /* FT_RENDER_MODE_LCD :: */\r
+ /* This mode corresponds to horizontal RGB and BGR sub-pixel */\r
+ /* displays, like LCD-screens. It produces 8-bit bitmaps that are */\r
+ /* 3 times the width of the original glyph outline in pixels, and */\r
+ /* which use the @FT_PIXEL_MODE_LCD mode. */\r
+ /* */\r
+ /* FT_RENDER_MODE_LCD_V :: */\r
+ /* This mode corresponds to vertical RGB and BGR sub-pixel displays */\r
+ /* (like PDA screens, rotated LCD displays, etc.). It produces */\r
+ /* 8-bit bitmaps that are 3 times the height of the original */\r
+ /* glyph outline in pixels and use the @FT_PIXEL_MODE_LCD_V mode. */\r
+ /* */\r
+ /* <Note> */\r
+ /* The LCD-optimized glyph bitmaps produced by FT_Render_Glyph are */\r
+ /* _not_ _filtered_ to reduce color-fringes. It is up to the caller */\r
+ /* to perform this pass. */\r
+ /* */\r
+ typedef enum FT_Render_Mode_\r
+ {\r
+ FT_RENDER_MODE_NORMAL = 0,\r
+ FT_RENDER_MODE_LIGHT,\r
+ FT_RENDER_MODE_MONO,\r
+ FT_RENDER_MODE_LCD,\r
+ FT_RENDER_MODE_LCD_V,\r
+\r
+ FT_RENDER_MODE_MAX\r
+\r
+ } FT_Render_Mode;\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Enum> */\r
+ /* ft_render_mode_xxx */\r
+ /* */\r
+ /* <Description> */\r
+ /* These constants are deprecated. Use the corresponding */\r
+ /* @FT_Render_Mode values instead. */\r
+ /* */\r
+ /* <Values> */\r
+ /* ft_render_mode_normal :: see @FT_RENDER_MODE_NORMAL */\r
+ /* ft_render_mode_mono :: see @FT_RENDER_MODE_MONO */\r
+ /* */\r
+#define ft_render_mode_normal FT_RENDER_MODE_NORMAL\r
+#define ft_render_mode_mono FT_RENDER_MODE_MONO\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Render_Glyph */\r
+ /* */\r
+ /* <Description> */\r
+ /* Convert a given glyph image to a bitmap. It does so by inspecting */\r
+ /* the glyph image format, finding the relevant renderer, and */\r
+ /* invoking it. */\r
+ /* */\r
+ /* <InOut> */\r
+ /* slot :: A handle to the glyph slot containing the image to */\r
+ /* convert. */\r
+ /* */\r
+ /* <Input> */\r
+ /* render_mode :: This is the render mode used to render the glyph */\r
+ /* image into a bitmap. See @FT_Render_Mode for a */\r
+ /* list of possible values. */\r
+ /* */\r
+ /* <Return> */\r
+ /* FreeType error code. 0 means success. */\r
+ /* */\r
+ FT_EXPORT( FT_Error )\r
+ FT_Render_Glyph( FT_GlyphSlot slot,\r
+ FT_Render_Mode render_mode );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Enum> */\r
+ /* FT_Kerning_Mode */\r
+ /* */\r
+ /* <Description> */\r
+ /* An enumeration used to specify which kerning values to return in */\r
+ /* @FT_Get_Kerning. */\r
+ /* */\r
+ /* <Values> */\r
+ /* FT_KERNING_DEFAULT :: Return scaled and grid-fitted kerning */\r
+ /* distances (value is 0). */\r
+ /* */\r
+ /* FT_KERNING_UNFITTED :: Return scaled but un-grid-fitted kerning */\r
+ /* distances. */\r
+ /* */\r
+ /* FT_KERNING_UNSCALED :: Return the kerning vector in original font */\r
+ /* units. */\r
+ /* */\r
+ typedef enum FT_Kerning_Mode_\r
+ {\r
+ FT_KERNING_DEFAULT = 0,\r
+ FT_KERNING_UNFITTED,\r
+ FT_KERNING_UNSCALED\r
+\r
+ } FT_Kerning_Mode;\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Const> */\r
+ /* ft_kerning_default */\r
+ /* */\r
+ /* <Description> */\r
+ /* This constant is deprecated. Please use @FT_KERNING_DEFAULT */\r
+ /* instead. */\r
+ /* */\r
+#define ft_kerning_default FT_KERNING_DEFAULT\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Const> */\r
+ /* ft_kerning_unfitted */\r
+ /* */\r
+ /* <Description> */\r
+ /* This constant is deprecated. Please use @FT_KERNING_UNFITTED */\r
+ /* instead. */\r
+ /* */\r
+#define ft_kerning_unfitted FT_KERNING_UNFITTED\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Const> */\r
+ /* ft_kerning_unscaled */\r
+ /* */\r
+ /* <Description> */\r
+ /* This constant is deprecated. Please use @FT_KERNING_UNSCALED */\r
+ /* instead. */\r
+ /* */\r
+#define ft_kerning_unscaled FT_KERNING_UNSCALED\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Get_Kerning */\r
+ /* */\r
+ /* <Description> */\r
+ /* Return the kerning vector between two glyphs of a same face. */\r
+ /* */\r
+ /* <Input> */\r
+ /* face :: A handle to a source face object. */\r
+ /* */\r
+ /* left_glyph :: The index of the left glyph in the kern pair. */\r
+ /* */\r
+ /* right_glyph :: The index of the right glyph in the kern pair. */\r
+ /* */\r
+ /* kern_mode :: See @FT_Kerning_Mode for more information. */\r
+ /* Determines the scale and dimension of the returned */\r
+ /* kerning vector. */\r
+ /* */\r
+ /* <Output> */\r
+ /* akerning :: The kerning vector. This is either in font units */\r
+ /* or in pixels (26.6 format) for scalable formats, */\r
+ /* and in pixels for fixed-sizes formats. */\r
+ /* */\r
+ /* <Return> */\r
+ /* FreeType error code. 0 means success. */\r
+ /* */\r
+ /* <Note> */\r
+ /* Only horizontal layouts (left-to-right & right-to-left) are */\r
+ /* supported by this method. Other layouts, or more sophisticated */\r
+ /* kernings, are out of the scope of this API function -- they can be */\r
+ /* implemented through format-specific interfaces. */\r
+ /* */\r
+ FT_EXPORT( FT_Error )\r
+ FT_Get_Kerning( FT_Face face,\r
+ FT_UInt left_glyph,\r
+ FT_UInt right_glyph,\r
+ FT_UInt kern_mode,\r
+ FT_Vector *akerning );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Get_Track_Kerning */\r
+ /* */\r
+ /* <Description> */\r
+ /* Return the track kerning for a given face object at a given size. */\r
+ /* */\r
+ /* <Input> */\r
+ /* face :: A handle to a source face object. */\r
+ /* */\r
+ /* point_size :: The point size in 16.16 fractional points. */\r
+ /* */\r
+ /* degree :: The degree of tightness. */\r
+ /* */\r
+ /* <Output> */\r
+ /* akerning :: The kerning in 16.16 fractional points. */\r
+ /* */\r
+ /* <Return> */\r
+ /* FreeType error code. 0 means success. */\r
+ /* */\r
+ FT_EXPORT( FT_Error )\r
+ FT_Get_Track_Kerning( FT_Face face,\r
+ FT_Fixed point_size,\r
+ FT_Int degree,\r
+ FT_Fixed* akerning );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Get_Glyph_Name */\r
+ /* */\r
+ /* <Description> */\r
+ /* Retrieve the ASCII name of a given glyph in a face. This only */\r
+ /* works for those faces where @FT_HAS_GLYPH_NAMES(face) returns 1. */\r
+ /* */\r
+ /* <Input> */\r
+ /* face :: A handle to a source face object. */\r
+ /* */\r
+ /* glyph_index :: The glyph index. */\r
+ /* */\r
+ /* buffer_max :: The maximal number of bytes available in the */\r
+ /* buffer. */\r
+ /* */\r
+ /* <Output> */\r
+ /* buffer :: A pointer to a target buffer where the name is */\r
+ /* copied to. */\r
+ /* */\r
+ /* <Return> */\r
+ /* FreeType error code. 0 means success. */\r
+ /* */\r
+ /* <Note> */\r
+ /* An error is returned if the face doesn't provide glyph names or if */\r
+ /* the glyph index is invalid. In all cases of failure, the first */\r
+ /* byte of `buffer' is set to 0 to indicate an empty name. */\r
+ /* */\r
+ /* The glyph name is truncated to fit within the buffer if it is too */\r
+ /* long. The returned string is always zero-terminated. */\r
+ /* */\r
+ /* This function is not compiled within the library if the config */\r
+ /* macro `FT_CONFIG_OPTION_NO_GLYPH_NAMES' is defined in */\r
+ /* `include/freetype/config/ftoptions.h'. */\r
+ /* */\r
+ FT_EXPORT( FT_Error )\r
+ FT_Get_Glyph_Name( FT_Face face,\r
+ FT_UInt glyph_index,\r
+ FT_Pointer buffer,\r
+ FT_UInt buffer_max );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Get_Postscript_Name */\r
+ /* */\r
+ /* <Description> */\r
+ /* Retrieve the ASCII Postscript name of a given face, if available. */\r
+ /* This only works with Postscript and TrueType fonts. */\r
+ /* */\r
+ /* <Input> */\r
+ /* face :: A handle to the source face object. */\r
+ /* */\r
+ /* <Return> */\r
+ /* A pointer to the face's Postscript name. NULL if unavailable. */\r
+ /* */\r
+ /* <Note> */\r
+ /* The returned pointer is owned by the face and is destroyed with */\r
+ /* it. */\r
+ /* */\r
+ FT_EXPORT( const char* )\r
+ FT_Get_Postscript_Name( FT_Face face );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Select_Charmap */\r
+ /* */\r
+ /* <Description> */\r
+ /* Select a given charmap by its encoding tag (as listed in */\r
+ /* `freetype.h'). */\r
+ /* */\r
+ /* <InOut> */\r
+ /* face :: A handle to the source face object. */\r
+ /* */\r
+ /* <Input> */\r
+ /* encoding :: A handle to the selected encoding. */\r
+ /* */\r
+ /* <Return> */\r
+ /* FreeType error code. 0 means success. */\r
+ /* */\r
+ /* <Note> */\r
+ /* This function returns an error if no charmap in the face */\r
+ /* corresponds to the encoding queried here. */\r
+ /* */\r
+ /* Because many fonts contain more than a single cmap for Unicode */\r
+ /* encoding, this function has some special code to select the one */\r
+ /* which covers Unicode best. It is thus preferable to */\r
+ /* @FT_Set_Charmap in this case. */\r
+ /* */\r
+ FT_EXPORT( FT_Error )\r
+ FT_Select_Charmap( FT_Face face,\r
+ FT_Encoding encoding );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Set_Charmap */\r
+ /* */\r
+ /* <Description> */\r
+ /* Select a given charmap for character code to glyph index mapping. */\r
+ /* */\r
+ /* <InOut> */\r
+ /* face :: A handle to the source face object. */\r
+ /* */\r
+ /* <Input> */\r
+ /* charmap :: A handle to the selected charmap. */\r
+ /* */\r
+ /* <Return> */\r
+ /* FreeType error code. 0 means success. */\r
+ /* */\r
+ /* <Note> */\r
+ /* This function returns an error if the charmap is not part of */\r
+ /* the face (i.e., if it is not listed in the `face->charmaps' */\r
+ /* table). */\r
+ /* */\r
+ FT_EXPORT( FT_Error )\r
+ FT_Set_Charmap( FT_Face face,\r
+ FT_CharMap charmap );\r
+\r
+\r
+ /*************************************************************************\r
+ *\r
+ * @function:\r
+ * FT_Get_Charmap_Index\r
+ *\r
+ * @description:\r
+ * Retrieve index of a given charmap.\r
+ *\r
+ * @input:\r
+ * charmap ::\r
+ * A handle to a charmap.\r
+ *\r
+ * @return:\r
+ * The index into the array of character maps within the face to which\r
+ * `charmap' belongs.\r
+ *\r
+ */\r
+ FT_EXPORT( FT_Int )\r
+ FT_Get_Charmap_Index( FT_CharMap charmap );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Get_Char_Index */\r
+ /* */\r
+ /* <Description> */\r
+ /* Return the glyph index of a given character code. This function */\r
+ /* uses a charmap object to do the mapping. */\r
+ /* */\r
+ /* <Input> */\r
+ /* face :: A handle to the source face object. */\r
+ /* */\r
+ /* charcode :: The character code. */\r
+ /* */\r
+ /* <Return> */\r
+ /* The glyph index. 0 means `undefined character code'. */\r
+ /* */\r
+ /* <Note> */\r
+ /* If you use FreeType to manipulate the contents of font files */\r
+ /* directly, be aware that the glyph index returned by this function */\r
+ /* doesn't always correspond to the internal indices used within */\r
+ /* the file. This is done to ensure that value 0 always corresponds */\r
+ /* to the `missing glyph'. */\r
+ /* */\r
+ FT_EXPORT( FT_UInt )\r
+ FT_Get_Char_Index( FT_Face face,\r
+ FT_ULong charcode );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Get_First_Char */\r
+ /* */\r
+ /* <Description> */\r
+ /* This function is used to return the first character code in the */\r
+ /* current charmap of a given face. It also returns the */\r
+ /* corresponding glyph index. */\r
+ /* */\r
+ /* <Input> */\r
+ /* face :: A handle to the source face object. */\r
+ /* */\r
+ /* <Output> */\r
+ /* agindex :: Glyph index of first character code. 0 if charmap is */\r
+ /* empty. */\r
+ /* */\r
+ /* <Return> */\r
+ /* The charmap's first character code. */\r
+ /* */\r
+ /* <Note> */\r
+ /* You should use this function with @FT_Get_Next_Char to be able to */\r
+ /* parse all character codes available in a given charmap. The code */\r
+ /* should look like this: */\r
+ /* */\r
+ /* { */\r
+ /* FT_ULong charcode; */\r
+ /* FT_UInt gindex; */\r
+ /* */\r
+ /* */\r
+ /* charcode = FT_Get_First_Char( face, &gindex ); */\r
+ /* while ( gindex != 0 ) */\r
+ /* { */\r
+ /* ... do something with (charcode,gindex) pair ... */\r
+ /* */\r
+ /* charcode = FT_Get_Next_Char( face, charcode, &gindex ); */\r
+ /* } */\r
+ /* } */\r
+ /* */\r
+ /* Note that `*agindex' is set to 0 if the charmap is empty. The */\r
+ /* result itself can be 0 in two cases: if the charmap is empty or */\r
+ /* when the value 0 is the first valid character code. */\r
+ /* */\r
+ FT_EXPORT( FT_ULong )\r
+ FT_Get_First_Char( FT_Face face,\r
+ FT_UInt *agindex );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Get_Next_Char */\r
+ /* */\r
+ /* <Description> */\r
+ /* This function is used to return the next character code in the */\r
+ /* current charmap of a given face following the value `char_code', */\r
+ /* as well as the corresponding glyph index. */\r
+ /* */\r
+ /* <Input> */\r
+ /* face :: A handle to the source face object. */\r
+ /* char_code :: The starting character code. */\r
+ /* */\r
+ /* <Output> */\r
+ /* agindex :: Glyph index of first character code. 0 if charmap */\r
+ /* is empty. */\r
+ /* */\r
+ /* <Return> */\r
+ /* The charmap's next character code. */\r
+ /* */\r
+ /* <Note> */\r
+ /* You should use this function with @FT_Get_First_Char to walk */\r
+ /* over all character codes available in a given charmap. See the */\r
+ /* note for this function for a simple code example. */\r
+ /* */\r
+ /* Note that `*agindex' is set to 0 when there are no more codes in */\r
+ /* the charmap. */\r
+ /* */\r
+ FT_EXPORT( FT_ULong )\r
+ FT_Get_Next_Char( FT_Face face,\r
+ FT_ULong char_code,\r
+ FT_UInt *agindex );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Get_Name_Index */\r
+ /* */\r
+ /* <Description> */\r
+ /* Return the glyph index of a given glyph name. This function uses */\r
+ /* driver specific objects to do the translation. */\r
+ /* */\r
+ /* <Input> */\r
+ /* face :: A handle to the source face object. */\r
+ /* */\r
+ /* glyph_name :: The glyph name. */\r
+ /* */\r
+ /* <Return> */\r
+ /* The glyph index. 0 means `undefined character code'. */\r
+ /* */\r
+ FT_EXPORT( FT_UInt )\r
+ FT_Get_Name_Index( FT_Face face,\r
+ FT_String* glyph_name );\r
+\r
+\r
+ /*************************************************************************\r
+ *\r
+ * @macro:\r
+ * FT_SUBGLYPH_FLAG_XXX\r
+ *\r
+ * @description:\r
+ * A list of constants used to describe subglyphs. Please refer to the\r
+ * TrueType specification for the meaning of the various flags.\r
+ *\r
+ * @values:\r
+ * FT_SUBGLYPH_FLAG_ARGS_ARE_WORDS ::\r
+ * FT_SUBGLYPH_FLAG_ARGS_ARE_XY_VALUES ::\r
+ * FT_SUBGLYPH_FLAG_ROUND_XY_TO_GRID ::\r
+ * FT_SUBGLYPH_FLAG_SCALE ::\r
+ * FT_SUBGLYPH_FLAG_XY_SCALE ::\r
+ * FT_SUBGLYPH_FLAG_2X2 ::\r
+ * FT_SUBGLYPH_FLAG_USE_MY_METRICS ::\r
+ *\r
+ */\r
+#define FT_SUBGLYPH_FLAG_ARGS_ARE_WORDS 1\r
+#define FT_SUBGLYPH_FLAG_ARGS_ARE_XY_VALUES 2\r
+#define FT_SUBGLYPH_FLAG_ROUND_XY_TO_GRID 4\r
+#define FT_SUBGLYPH_FLAG_SCALE 8\r
+#define FT_SUBGLYPH_FLAG_XY_SCALE 0x40\r
+#define FT_SUBGLYPH_FLAG_2X2 0x80\r
+#define FT_SUBGLYPH_FLAG_USE_MY_METRICS 0x200\r
+\r
+\r
+ /*************************************************************************\r
+ *\r
+ * @func:\r
+ * FT_Get_SubGlyph_Info\r
+ *\r
+ * @description:\r
+ * Retrieve a description of a given subglyph. Only use it if\r
+ * `glyph->format' is @FT_GLYPH_FORMAT_COMPOSITE, or an error is\r
+ * returned.\r
+ *\r
+ * @input:\r
+ * glyph ::\r
+ * The source glyph slot.\r
+ *\r
+ * sub_index ::\r
+ * The index of subglyph. Must be less than `glyph->num_subglyphs'.\r
+ *\r
+ * @output:\r
+ * p_index ::\r
+ * The glyph index of the subglyph.\r
+ *\r
+ * p_flags ::\r
+ * The subglyph flags, see @FT_SUBGLYPH_FLAG_XXX.\r
+ *\r
+ * p_arg1 ::\r
+ * The subglyph's first argument (if any).\r
+ *\r
+ * p_arg2 ::\r
+ * The subglyph's second argument (if any).\r
+ *\r
+ * p_transform ::\r
+ * The subglyph transformation (if any).\r
+ *\r
+ * @return:\r
+ * FreeType error code. 0 means success.\r
+ *\r
+ * @note:\r
+ * The values of `*p_arg1', `*p_arg2', and `*p_transform' must be\r
+ * interpreted depending on the flags returned in `*p_flags'. See the\r
+ * TrueType specification for details.\r
+ *\r
+ */\r
+ FT_EXPORT( FT_Error )\r
+ FT_Get_SubGlyph_Info( FT_GlyphSlot glyph,\r
+ FT_UInt sub_index,\r
+ FT_Int *p_index,\r
+ FT_UInt *p_flags,\r
+ FT_Int *p_arg1,\r
+ FT_Int *p_arg2,\r
+ FT_Matrix *p_transform );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Section> */\r
+ /* computations */\r
+ /* */\r
+ /* <Title> */\r
+ /* Computations */\r
+ /* */\r
+ /* <Abstract> */\r
+ /* Crunching fixed numbers and vectors. */\r
+ /* */\r
+ /* <Description> */\r
+ /* This section contains various functions used to perform */\r
+ /* computations on 16.16 fixed-float numbers or 2d vectors. */\r
+ /* */\r
+ /* <Order> */\r
+ /* FT_MulDiv */\r
+ /* FT_MulFix */\r
+ /* FT_DivFix */\r
+ /* FT_RoundFix */\r
+ /* FT_CeilFix */\r
+ /* FT_FloorFix */\r
+ /* FT_Vector_Transform */\r
+ /* FT_Matrix_Multiply */\r
+ /* FT_Matrix_Invert */\r
+ /* */\r
+ /*************************************************************************/\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_MulDiv */\r
+ /* */\r
+ /* <Description> */\r
+ /* A very simple function used to perform the computation `(a*b)/c' */\r
+ /* with maximal accuracy (it uses a 64-bit intermediate integer */\r
+ /* whenever necessary). */\r
+ /* */\r
+ /* This function isn't necessarily as fast as some processor specific */\r
+ /* operations, but is at least completely portable. */\r
+ /* */\r
+ /* <Input> */\r
+ /* a :: The first multiplier. */\r
+ /* b :: The second multiplier. */\r
+ /* c :: The divisor. */\r
+ /* */\r
+ /* <Return> */\r
+ /* The result of `(a*b)/c'. This function never traps when trying to */\r
+ /* divide by zero; it simply returns `MaxInt' or `MinInt' depending */\r
+ /* on the signs of `a' and `b'. */\r
+ /* */\r
+ FT_EXPORT( FT_Long )\r
+ FT_MulDiv( FT_Long a,\r
+ FT_Long b,\r
+ FT_Long c );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_MulFix */\r
+ /* */\r
+ /* <Description> */\r
+ /* A very simple function used to perform the computation */\r
+ /* `(a*b)/0x10000' with maximal accuracy. Most of the time this is */\r
+ /* used to multiply a given value by a 16.16 fixed float factor. */\r
+ /* */\r
+ /* <Input> */\r
+ /* a :: The first multiplier. */\r
+ /* b :: The second multiplier. Use a 16.16 factor here whenever */\r
+ /* possible (see note below). */\r
+ /* */\r
+ /* <Return> */\r
+ /* The result of `(a*b)/0x10000'. */\r
+ /* */\r
+ /* <Note> */\r
+ /* This function has been optimized for the case where the absolute */\r
+ /* value of `a' is less than 2048, and `b' is a 16.16 scaling factor. */\r
+ /* As this happens mainly when scaling from notional units to */\r
+ /* fractional pixels in FreeType, it resulted in noticeable speed */\r
+ /* improvements between versions 2.x and 1.x. */\r
+ /* */\r
+ /* As a conclusion, always try to place a 16.16 factor as the */\r
+ /* _second_ argument of this function; this can make a great */\r
+ /* difference. */\r
+ /* */\r
+ FT_EXPORT( FT_Long )\r
+ FT_MulFix( FT_Long a,\r
+ FT_Long b );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_DivFix */\r
+ /* */\r
+ /* <Description> */\r
+ /* A very simple function used to perform the computation */\r
+ /* `(a*0x10000)/b' with maximal accuracy. Most of the time, this is */\r
+ /* used to divide a given value by a 16.16 fixed float factor. */\r
+ /* */\r
+ /* <Input> */\r
+ /* a :: The first multiplier. */\r
+ /* b :: The second multiplier. Use a 16.16 factor here whenever */\r
+ /* possible (see note below). */\r
+ /* */\r
+ /* <Return> */\r
+ /* The result of `(a*0x10000)/b'. */\r
+ /* */\r
+ /* <Note> */\r
+ /* The optimization for FT_DivFix() is simple: If (a << 16) fits in */\r
+ /* 32 bits, then the division is computed directly. Otherwise, we */\r
+ /* use a specialized version of @FT_MulDiv. */\r
+ /* */\r
+ FT_EXPORT( FT_Long )\r
+ FT_DivFix( FT_Long a,\r
+ FT_Long b );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_RoundFix */\r
+ /* */\r
+ /* <Description> */\r
+ /* A very simple function used to round a 16.16 fixed number. */\r
+ /* */\r
+ /* <Input> */\r
+ /* a :: The number to be rounded. */\r
+ /* */\r
+ /* <Return> */\r
+ /* The result of `(a + 0x8000) & -0x10000'. */\r
+ /* */\r
+ FT_EXPORT( FT_Fixed )\r
+ FT_RoundFix( FT_Fixed a );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_CeilFix */\r
+ /* */\r
+ /* <Description> */\r
+ /* A very simple function used to compute the ceiling function of a */\r
+ /* 16.16 fixed number. */\r
+ /* */\r
+ /* <Input> */\r
+ /* a :: The number for which the ceiling function is to be computed. */\r
+ /* */\r
+ /* <Return> */\r
+ /* The result of `(a + 0x10000 - 1) & -0x10000'. */\r
+ /* */\r
+ FT_EXPORT( FT_Fixed )\r
+ FT_CeilFix( FT_Fixed a );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_FloorFix */\r
+ /* */\r
+ /* <Description> */\r
+ /* A very simple function used to compute the floor function of a */\r
+ /* 16.16 fixed number. */\r
+ /* */\r
+ /* <Input> */\r
+ /* a :: The number for which the floor function is to be computed. */\r
+ /* */\r
+ /* <Return> */\r
+ /* The result of `a & -0x10000'. */\r
+ /* */\r
+ FT_EXPORT( FT_Fixed )\r
+ FT_FloorFix( FT_Fixed a );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Vector_Transform */\r
+ /* */\r
+ /* <Description> */\r
+ /* Transform a single vector through a 2x2 matrix. */\r
+ /* */\r
+ /* <InOut> */\r
+ /* vector :: The target vector to transform. */\r
+ /* */\r
+ /* <Input> */\r
+ /* matrix :: A pointer to the source 2x2 matrix. */\r
+ /* */\r
+ /* <Note> */\r
+ /* The result is undefined if either `vector' or `matrix' is invalid. */\r
+ /* */\r
+ FT_EXPORT( void )\r
+ FT_Vector_Transform( FT_Vector* vec,\r
+ const FT_Matrix* matrix );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Section> */\r
+ /* version */\r
+ /* */\r
+ /* <Title> */\r
+ /* FreeType Version */\r
+ /* */\r
+ /* <Abstract> */\r
+ /* Functions and macros related to FreeType versions. */\r
+ /* */\r
+ /* <Description> */\r
+ /* Note that those functions and macros are of limited use because */\r
+ /* even a new release of FreeType with only documentation changes */\r
+ /* increases the version number. */\r
+ /* */\r
+ /*************************************************************************/\r
+\r
+\r
+ /*************************************************************************\r
+ *\r
+ * @enum:\r
+ * FREETYPE_XXX\r
+ *\r
+ * @description:\r
+ * These three macros identify the FreeType source code version.\r
+ * Use @FT_Library_Version to access them at runtime.\r
+ *\r
+ * @values:\r
+ * FREETYPE_MAJOR :: The major version number.\r
+ * FREETYPE_MINOR :: The minor version number.\r
+ * FREETYPE_PATCH :: The patch level.\r
+ *\r
+ * @note:\r
+ * The version number of FreeType if built as a dynamic link library\r
+ * with the `libtool' package is _not_ controlled by these three\r
+ * macros.\r
+ */\r
+#define FREETYPE_MAJOR 2\r
+#define FREETYPE_MINOR 3\r
+#define FREETYPE_PATCH 5\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Library_Version */\r
+ /* */\r
+ /* <Description> */\r
+ /* Return the version of the FreeType library being used. This is */\r
+ /* useful when dynamically linking to the library, since one cannot */\r
+ /* use the macros @FREETYPE_MAJOR, @FREETYPE_MINOR, and */\r
+ /* @FREETYPE_PATCH. */\r
+ /* */\r
+ /* <Input> */\r
+ /* library :: A source library handle. */\r
+ /* */\r
+ /* <Output> */\r
+ /* amajor :: The major version number. */\r
+ /* */\r
+ /* aminor :: The minor version number. */\r
+ /* */\r
+ /* apatch :: The patch version number. */\r
+ /* */\r
+ /* <Note> */\r
+ /* The reason why this function takes a `library' argument is because */\r
+ /* certain programs implement library initialization in a custom way */\r
+ /* that doesn't use @FT_Init_FreeType. */\r
+ /* */\r
+ /* In such cases, the library version might not be available before */\r
+ /* the library object has been created. */\r
+ /* */\r
+ FT_EXPORT( void )\r
+ FT_Library_Version( FT_Library library,\r
+ FT_Int *amajor,\r
+ FT_Int *aminor,\r
+ FT_Int *apatch );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Face_CheckTrueTypePatents */\r
+ /* */\r
+ /* <Description> */\r
+ /* Parse all bytecode instructions of a TrueType font file to check */\r
+ /* whether any of the patented opcodes are used. This is only useful */\r
+ /* if you want to be able to use the unpatented hinter with */\r
+ /* fonts that do *not* use these opcodes. */\r
+ /* */\r
+ /* Note that this function parses *all* glyph instructions in the */\r
+ /* font file, which may be slow. */\r
+ /* */\r
+ /* <Input> */\r
+ /* face :: A face handle. */\r
+ /* */\r
+ /* <Return> */\r
+ /* 1 if this is a TrueType font that uses one of the patented */\r
+ /* opcodes, 0 otherwise. */\r
+ /* */\r
+ /* <Since> */\r
+ /* 2.3.5 */\r
+ /* */\r
+ FT_EXPORT( FT_Bool )\r
+ FT_Face_CheckTrueTypePatents( FT_Face face );\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* <Function> */\r
+ /* FT_Face_SetUnpatentedHinting */\r
+ /* */\r
+ /* <Description> */\r
+ /* Enable or disable the unpatented hinter for a given face. */\r
+ /* Only enable it if you have determined that the face doesn't */\r
+ /* use any patented opcodes (see @FT_Face_CheckTrueTypePatents). */\r
+ /* */\r
+ /* <Input> */\r
+ /* face :: A face handle. */\r
+ /* */\r
+ /* value :: New boolean setting. */\r
+ /* */\r
+ /* <Return> */\r
+ /* The old setting value. This will always be false if this is not */\r
+ /* a SFNT font, or if the unpatented hinter is not compiled in this */\r
+ /* instance of the library. */\r
+ /* */\r
+ /* <Since> */\r
+ /* 2.3.5 */\r
+ /* */\r
+ FT_EXPORT( FT_Bool )\r
+ FT_Face_SetUnpatentedHinting( FT_Face face,\r
+ FT_Bool value );\r
+\r
+ /* */\r
+\r
+\r
+FT_END_HEADER\r
+\r
+#endif /* __FREETYPE_H__ */\r
+\r
+\r
+/* END */\r
projects / reactos.git / blobdiff