X-Git-Url: https://git.octo.it/?p=rrdtool.git;a=blobdiff_plain;f=libraries%2Ffreetype-2.0.5%2Finclude%2Ffreetype%2Ffreetype.h;fp=libraries%2Ffreetype-2.0.5%2Finclude%2Ffreetype%2Ffreetype.h;h=0000000000000000000000000000000000000000;hp=41d6f609e0e5d7eb066d305650142cc6afc8b81d;hb=bab0189ee9d56aca8bea909275317ab4e0be09ee;hpb=b837c0527f117b54845242ee7626df6d88394444 diff --git a/libraries/freetype-2.0.5/include/freetype/freetype.h b/libraries/freetype-2.0.5/include/freetype/freetype.h deleted file mode 100644 index 41d6f60..0000000 --- a/libraries/freetype-2.0.5/include/freetype/freetype.h +++ /dev/null @@ -1,2619 +0,0 @@ -/***************************************************************************/ -/* */ -/* freetype.h */ -/* */ -/* FreeType high-level API and common types (specification only). */ -/* */ -/* Copyright 1996-2001 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 __FREETYPE_H__ -#define __FREETYPE_H__ - - - /*************************************************************************/ - /* */ - /* The `raster' component duplicates some of the declarations in */ - /* freetype.h for stand-alone use if _FREETYPE_ isn't defined. */ - /* */ - - - /*************************************************************************/ - /* */ - /* The FREETYPE_MAJOR and FREETYPE_MINOR macros are used to version the */ - /* new FreeType design, which is able to host several kinds of font */ - /* drivers. It starts at 2.0. */ - /* */ -#define FREETYPE_MAJOR 2 -#define FREETYPE_MINOR 0 - - -#include -#include FT_CONFIG_CONFIG_H -#include FT_ERRORS_H -#include FT_TYPES_H - - -FT_BEGIN_HEADER - - - /*************************************************************************/ - /*************************************************************************/ - /* */ - /* B A S I C T Y P E S */ - /* */ - /*************************************************************************/ - /*************************************************************************/ - - - /*************************************************************************/ - /* */ - /*
*/ - /* base_interface */ - /* */ - /* */ - /* Base Interface */ - /* */ - /* <Abstract> */ - /* The FreeType 2 base font interface. */ - /* */ - /* <Description> */ - /* This section describes the public high-level API of FreeType 2. */ - /* */ - /* <Order> */ - /* FT_Library */ - /* FT_Face */ - /* FT_Size */ - /* FT_GlyphSlot */ - /* FT_CharMap */ - /* FT_Encoding */ - /* */ - /* FT_FaceRec */ - /* */ - /* FT_FACE_FLAG_SCALABLE */ - /* FT_FACE_FLAG_FIXED_SIZES */ - /* FT_FACE_FLAG_FIXED_WIDTH */ - /* FT_FACE_FLAG_HORIZONTAL */ - /* FT_FACE_FLAG_VERTICAL */ - /* FT_FACE_FLAG_SFNT */ - /* FT_FACE_FLAG_KERNING */ - /* FT_FACE_FLAG_MULTIPLE_MASTERS */ - /* FT_FACE_FLAG_GLYPH_NAMES */ - /* FT_FACE_FLAG_EXTERNAL_STREAM */ - /* FT_FACE_FLAG_FAST_GLYPHS */ - /* */ - /* FT_STYLE_FLAG_BOLD */ - /* FT_STYLE_FLAG_ITALIC */ - /* */ - /* FT_SizeRec */ - /* FT_Size_Metrics */ - /* */ - /* FT_GlyphSlotRec */ - /* FT_Glyph_Metrics */ - /* FT_SubGlyph */ - /* */ - /* FT_Bitmap_Size */ - /* */ - /* FT_Init_FreeType */ - /* FT_Done_FreeType */ - /* */ - /* FT_New_Face */ - /* FT_Done_Face */ - /* FT_New_Memory_Face */ - /* FT_Open_Face */ - /* FT_Open_Args */ - /* FT_Open_Flags */ - /* FT_Parameter */ - /* FT_Attach_File */ - /* FT_Attach_Stream */ - /* */ - /* FT_Set_Char_Size */ - /* FT_Set_Pixel_Sizes */ - /* FT_Set_Transform */ - /* FT_Load_Glyph */ - /* FT_Get_Char_Index */ - /* FT_Get_Name_Index */ - /* FT_Load_Char */ - /* */ - /* FT_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_Render_Glyph */ - /* FT_Render_Mode */ - /* FT_Get_Kerning */ - /* FT_Kerning_Mode */ - /* FT_Get_Glyph_Name */ - /* */ - /* FT_CharMapRec */ - /* FT_Select_Charmap */ - /* FT_Set_Charmap */ - /* */ - /*************************************************************************/ - - - /*************************************************************************/ - /* */ - /* <Struct> */ - /* FT_Glyph_Metrics */ - /* */ - /* <Description> */ - /* A structure used to model the metrics of a single glyph. Note */ - /* that values are expressed in 26.6 fractional pixel format or in */ - /* font units, depending on context. */ - /* */ - /* <Fields> */ - /* width :: The glyph's width. */ - /* */ - /* height :: The glyph's height. */ - /* */ - /* horiBearingX :: Horizontal left side bearing. */ - /* */ - /* horiBearingY :: Horizontal top side bearing. */ - /* */ - /* horiAdvance :: Horizontal advance width. */ - /* */ - /* vertBearingX :: Vertical left side bearing. */ - /* */ - /* vertBearingY :: Vertical top side bearing. */ - /* */ - /* vertAdvance :: Vertical advance height. */ - /* */ - typedef struct FT_Glyph_Metrics_ - { - FT_Pos width; /* glyph width */ - FT_Pos height; /* glyph height */ - - FT_Pos horiBearingX; /* left side bearing in horizontal layouts */ - FT_Pos horiBearingY; /* top side bearing in horizontal layouts */ - FT_Pos horiAdvance; /* advance width for horizontal layout */ - - FT_Pos vertBearingX; /* left side bearing in vertical layouts */ - FT_Pos vertBearingY; /* top side bearing in vertical layouts */ - FT_Pos vertAdvance; /* advance height for vertical layout */ - - } FT_Glyph_Metrics; - - - /*************************************************************************/ - /* */ - /* <Struct> */ - /* FT_Bitmap_Size */ - /* */ - /* <Description> */ - /* An extremely simple structure used to model the size of a bitmap */ - /* strike (i.e., a bitmap instance of the font for a given */ - /* resolution) in a fixed-size font face. This is used for the */ - /* `available_sizes' field of the FT_Face_Properties structure. */ - /* */ - /* <Fields> */ - /* height :: The character height in pixels. */ - /* */ - /* width :: The character width in pixels. */ - /* */ - typedef struct FT_Bitmap_Size_ - { - FT_Short height; - FT_Short width; - - } 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 system object (see FT_System), as well as a */ - /* scan-line converter object (see FT_Raster). */ - /* */ - /* <Note> */ - /* Library objects are created through FT_Init_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 able to create faces, sizes, glyph slots, and charmaps from the */ - /* resources whose format it supports. */ - /* */ - /* A driver can support either bitmap, graymap, or scalable font */ - /* formats. */ - /* */ - typedef struct FT_DriverRec_* FT_Driver; - - - /*************************************************************************/ - /* */ - /* <Type> */ - /* FT_Renderer */ - /* */ - /* <Description> */ - /* A handle to a given FreeType renderer. A renderer is in charge of */ - /* converting a glyph image to a bitmap, when necessary. Each */ - /* 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 driver face object. A face object contains */ - /* all the instance and glyph independent data of a font file */ - /* typeface. */ - /* */ - /* A face object is created from a resource object through the */ - /* new_face() method of a given driver. */ - /* */ - typedef struct FT_FaceRec_* FT_Face; - - - /*************************************************************************/ - /* */ - /* <Type> */ - /* FT_Size */ - /* */ - /* <Description> */ - /* A handle to a given driver size object. Such an object models the */ - /* _resolution_ AND _size_ dependent state of a given driver face */ - /* size. */ - /* */ - /* A size object is always created from a given face object. It is */ - /* discarded automatically by its parent face. */ - /* */ - 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 of the glyphs contained within its parent */ - /* face. */ - /* */ - /* A glyph slot is created from a given face object. It is discarded */ - /* automatically by its parent face. */ - /* */ - 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. */ - /* */ - /* A charmap is created from a given face object. It is discarded */ - /* automatically by its parent face. */ - /* */ - typedef struct FT_CharMapRec_* FT_CharMap; - - - /*************************************************************************/ - /* */ - /* <Macro> */ - /* FT_ENC_TAG */ - /* */ - /* <Description> */ - /* This macro converts four letter tags into an unsigned long. */ - /* */ -#ifndef FT_ENC_TAG -#define FT_ENC_TAG( value, _x1, _x2, _x3, _x4 ) \ - value = ( ( (unsigned long)_x1 << 24 ) | \ - ( (unsigned long)_x2 << 16 ) | \ - ( (unsigned long)_x3 << 8 ) | \ - (unsigned long)_x4 ) -#endif /* FT_ENC_TAG */ - - - /*************************************************************************/ - /* */ - /* <Enum> */ - /* FT_Encoding */ - /* */ - /* <Description> */ - /* An enumeration used to specify encodings supported by charmaps. */ - /* Used in the FT_Select_Charmap() API function. */ - /* */ - /* <Note> */ - /* Because of 32-bit charcodes defined in Unicode (i.e., surrogates), */ - /* all character codes must be expressed as FT_Longs. */ - /* */ - /* Other encodings might be defined in the future. */ - /* */ - typedef enum FT_Encoding_ - { - FT_ENC_TAG( ft_encoding_none, 0, 0, 0, 0 ), - - FT_ENC_TAG( ft_encoding_symbol, 's', 'y', 'm', 'b' ), - FT_ENC_TAG( ft_encoding_unicode, 'u', 'n', 'i', 'c' ), - FT_ENC_TAG( ft_encoding_latin_2, 'l', 'a', 't', '2' ), - 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' ), - - 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_apple_roman, 'a', 'r', 'm', 'n' ) - - } FT_Encoding; - - - /*************************************************************************/ - /* */ - /* <Struct> */ - /* FT_CharMapRec */ - /* */ - /* <Description> */ - /* The base charmap class. */ - /* */ - /* <Fields> */ - /* face :: A handle to the parent face object. */ - /* */ - /* encoding :: A tag which identifies 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. */ - /* */ - /* <Note> */ - /* We STRONGLY recommmend emulating a Unicode charmap for drivers */ - /* that do not support TrueType or OpenType. */ - /* */ - 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 field might change between releases of FreeType 2 and are */ - /* not generally available to client applications. */ - /* */ - typedef struct FT_Face_InternalRec_* FT_Face_Internal; - - - /*************************************************************************/ - /* */ - /* FreeType base face class */ - /* */ - /* <Struct> */ - /* FT_FaceRec */ - /* */ - /* <Description> */ - /* FreeType root face class structure. A face object models the */ - /* resolution and point-size independent data found in a font file. */ - /* */ - /* <Fields> */ - /* num_faces :: In the case where the face is located in a */ - /* collection (i.e., a resource which embeds */ - /* several faces), this is the total number of */ - /* faces found in the resource. 1 by default. */ - /* */ - /* face_index :: The index of the face in its resource. */ - /* Usually, this is 0 for all normal font */ - /* formats. It can be more in the case of */ - /* collections (which embed several fonts in a */ - /* single resource/file). */ - /* */ - /* face_flags :: A set of bit flags that give important */ - /* information about the face; see the */ - /* FT_FACE_FLAG_XXX macros for details. */ - /* */ - /* style_flags :: A set of bit flags indicating the style of */ - /* the face (i.e., italic, bold, underline, */ - /* etc). */ - /* */ - /* num_glyphs :: The total number of glyphs in the face. */ - /* */ - /* family_name :: The face's family name. This is an ASCII */ - /* string, usually in English, which describes */ - /* the typeface's family (like `Times New */ - /* Roman', `Bodoni', `Garamond', etc). This */ - /* is a least common denominator used to list */ - /* fonts. Some formats (TrueType & OpenType) */ - /* provide localized and Unicode versions of */ - /* this string. Applications should use the */ - /* format specific interface to access them. */ - /* */ - /* style_name :: The face's style name. This is an ASCII */ - /* string, usually in English, which describes */ - /* the typeface's style (like `Italic', */ - /* `Bold', `Condensed', etc). Not all font */ - /* formats provide a style name, so this field */ - /* is optional, and can be set to NULL. As */ - /* for `family_name', some formats provide */ - /* localized/Unicode versions of this string. */ - /* Applications should use the format specific */ - /* interface to access them. */ - /* */ - /* num_fixed_sizes :: The number of fixed sizes available in this */ - /* face. This should be set to 0 for scalable */ - /* fonts, unless its resource includes a */ - /* complete set of glyphs (called a `strike') */ - /* for the specified size. */ - /* */ - /* available_sizes :: An array of sizes specifying the available */ - /* bitmap/graymap sizes that are contained in */ - /* in the font resource. Should be set to */ - /* NULL if the field `num_fixed_sizes' is set */ - /* to 0. */ - /* */ - /* num_charmaps :: The total number of character maps in the */ - /* face. */ - /* */ - /* charmaps :: A table of pointers to the face's charmaps. */ - /* Used to scan the list of available charmaps */ - /* -- this table might change after a call to */ - /* FT_Attach_File/Stream (e.g. when used to */ - /* hook an additional encoding/CMap to the */ - /* face object). */ - /* */ - /* generic :: A field reserved for client uses. See the */ - /* FT_Generic type description. */ - /* */ - /* bbox :: The font bounding box. Coordinates are */ - /* expressed in font units (see units_per_EM). */ - /* The box is large enough to contain any */ - /* glyph from the font. Thus, bbox.yMax can */ - /* be seen as the `maximal ascender', */ - /* bbox.yMin as the `minimal descender', and */ - /* the maximal glyph width is given by */ - /* `bbox.xMax-bbox.xMin' (not to be confused */ - /* with the maximal _advance_width_). Only */ - /* relevant for scalable formats. */ - /* */ - /* units_per_EM :: The number of font units per EM square for */ - /* this face. This is typically 2048 for */ - /* TrueType fonts, 1000 for Type1 fonts, and */ - /* should be set to the (unrealistic) value 1 */ - /* for fixed-sizes fonts. Only relevant for */ - /* scalable formats. */ - /* */ - /* ascender :: The face's ascender is the vertical */ - /* distance from the baseline to the topmost */ - /* point of any glyph in the face. This */ - /* field's value is positive, expressed in */ - /* font units. Some font designs use a value */ - /* different from `bbox.yMax'. Only relevant */ - /* for scalable formats. */ - /* */ - /* descender :: The face's descender is the vertical */ - /* distance from the baseline to the */ - /* bottommost point of any glyph in the face. */ - /* This field's value is positive, expressed */ - /* in font units. Some font designs use a */ - /* value different from `-bbox.yMin'. Only */ - /* relevant for scalable formats. */ - /* */ - /* height :: The face's height is the vertical distance */ - /* from one baseline to the next when writing */ - /* several lines of text. Its value is always */ - /* positive, expressed in font units. The */ - /* value can be computed as */ - /* `ascender+descender+line_gap' where the */ - /* value of `line_gap' is also called */ - /* `external leading'. Only relevant for */ - /* scalable formats. */ - /* */ - /* max_advance_width :: The maximal advance width, in font units, */ - /* for all glyphs in this face. This can be */ - /* used to make word wrapping computations */ - /* faster. Only relevant for scalable */ - /* formats. */ - /* */ - /* max_advance_height :: The maximal advance height, in font units, */ - /* for all glyphs in this face. This is only */ - /* relevant for vertical layouts, and should */ - /* be set to the `height' for fonts that do */ - /* not provide vertical metrics. Only */ - /* relevant for scalable formats. */ - /* */ - /* underline_position :: The position, in font units, of the */ - /* underline line for this face. It's the */ - /* center of the underlining stem. Only */ - /* relevant for scalable formats. */ - /* */ - /* underline_thickness :: The thickness, in font units, of the */ - /* underline for this face. Only relevant for */ - /* scalable formats. */ - /* */ - /* driver :: A handle to the face's parent driver */ - /* object. */ - /* */ - /* memory :: A handle to the face's parent memory */ - /* object. Used for the allocation of */ - /* subsequent objects. */ - /* */ - /* stream :: A handle to the face's stream. */ - /* */ - /* glyph :: The face's associated glyph slot(s). This */ - /* object is created automatically with a new */ - /* face object. However, certain kinds of */ - /* applications (mainly tools like converters) */ - /* can need more than one slot to ease their */ - /* task. */ - /* */ - /* sizes_list :: The list of child sizes for this face. */ - /* */ - /* internal :: A pointer to internal fields of the face */ - /* object. These fields can change freely */ - /* between releases of FreeType and are not */ - /* publicly available. */ - /* */ - typedef struct FT_FaceRec_ - { - FT_Long num_faces; - FT_Long face_index; - - FT_Long face_flags; - FT_Long style_flags; - - FT_Long num_glyphs; - - FT_String* family_name; - FT_String* style_name; - - FT_Int num_fixed_sizes; - FT_Bitmap_Size* available_sizes; - - FT_Int num_charmaps; - FT_CharMap* charmaps; - - FT_Generic generic; - - /*# the following are only relevant to scalable outlines */ - FT_BBox bbox; - - FT_UShort units_per_EM; - FT_Short ascender; - FT_Short descender; - FT_Short height; - - FT_Short max_advance_width; - FT_Short max_advance_height; - - FT_Short underline_position; - FT_Short underline_thickness; - - FT_GlyphSlot glyph; - FT_Size size; - FT_CharMap charmap; - - /*@private begin */ - - FT_Driver driver; - FT_Memory memory; - FT_Stream stream; - - FT_ListRec sizes_list; - - FT_Generic autohint; - void* extensions; - - FT_Face_Internal internal; - - /*@private end */ - - } FT_FaceRec; - - - /*************************************************************************/ - /* */ - /* <Constant> */ - /* FT_FACE_FLAG_SCALABLE */ - /* */ - /* <Description> */ - /* A bit-field constant, used to indicate that a given face provides */ - /* vectorial outlines (i.e., TrueType or Type1). This doesn't */ - /* prevent embedding of bitmap strikes though, i.e., a given face can */ - /* have both this bit set, and a `num_fixed_sizes' property > 0. */ - /* */ -#define FT_FACE_FLAG_SCALABLE 1 - - - /*************************************************************************/ - /* */ - /* <Constant> */ - /* FT_FACE_FLAG_FIXED_SIZES */ - /* */ - /* <Description> */ - /* A bit-field constant, used to indicate that a given face contains */ - /* `fixed sizes', i.e., bitmap strikes for some given pixel sizes. */ - /* See the `num_fixed_sizes' and `available_sizes' face properties */ - /* for more information. */ - /* */ -#define FT_FACE_FLAG_FIXED_SIZES 2 - - - /*************************************************************************/ - /* */ - /* <Constant> */ - /* FT_FACE_FLAG_FIXED_WIDTH */ - /* */ - /* <Description> */ - /* A bit-field constant, used to indicate that a given face contains */ - /* fixed-width characters (like Courier, Lucida, MonoType, etc.). */ - /* */ -#define FT_FACE_FLAG_FIXED_WIDTH 4 - - - /*************************************************************************/ - /* */ - /* <Constant> */ - /* FT_FACE_FLAG_SFNT */ - /* */ - /* <Description> */ - /* A bit-field constant, used to indicate that a given face uses the */ - /* `sfnt' storage fomat. For now, this means TrueType or OpenType. */ - /* */ -#define FT_FACE_FLAG_SFNT 8 - - - /*************************************************************************/ - /* */ - /* <Constant> */ - /* FT_FACE_FLAG_HORIZONTAL */ - /* */ - /* <Description> */ - /* A bit-field constant, used to indicate that a given face contains */ - /* horizontal glyph metrics. This should be set for all common */ - /* formats, but who knows. */ - /* */ -#define FT_FACE_FLAG_HORIZONTAL 0x10 - - - /*************************************************************************/ - /* */ - /* <Constant> */ - /* FT_FACE_FLAG_VERTICAL */ - /* */ - /* <Description> */ - /* A bit-field constant, used to indicate that a given face contains */ - /* vertical glyph metrics. If not set, the glyph loader will */ - /* synthetize vertical metrics itself to help display vertical text */ - /* correctly. */ - /* */ -#define FT_FACE_FLAG_VERTICAL 0x20 - - - /*************************************************************************/ - /* */ - /* <Constant> */ - /* FT_FACE_FLAG_KERNING */ - /* */ - /* <Description> */ - /* A bit-field constant, used to indicate that a given face contains */ - /* kerning information. When set, this information can be retrieved */ - /* through the function FT_Get_Kerning(). Note that when unset, this */ - /* function will always return the kerning vector (0,0). */ - /* */ -#define FT_FACE_FLAG_KERNING 0x40 - - - /*************************************************************************/ - /* */ - /* <Constant> */ - /* FT_FACE_FLAG_FAST_GLYPHS */ - /* */ - /* <Description> */ - /* A bit-field constant, used to indicate that the glyphs in a given */ - /* font can be retrieved very quickly, and that a glyph cache is thus */ - /* not necessary for any of its child size objects. */ - /* */ - /* This flag should really be set for fixed-size formats like FNT, */ - /* where each glyph bitmap is available directly in binary form */ - /* without any kind of compression. */ - /* */ -#define FT_FACE_FLAG_FAST_GLYPHS 0x80 - - - /*************************************************************************/ - /* */ - /* <Constant> */ - /* FT_FACE_FLAG_MULTIPLE_MASTERS */ - /* */ - /* <Description> */ - /* A bit-field constant, used to indicate that the font contains */ - /* multiple masters and is capable of interpolating between them. */ - /* */ -#define FT_FACE_FLAG_MULTIPLE_MASTERS 0x100 - - - /*************************************************************************/ - /* */ - /* <Constant> */ - /* FT_FACE_FLAG_GLYPH_NAMES */ - /* */ - /* <Description> */ - /* A bit-field constant, used to indicate that the font contains */ - /* glyph names that can be retrieved through FT_Get_Glyph_Name(). */ - /* */ -#define FT_FACE_FLAG_GLYPH_NAMES 0x200 - - - /*************************************************************************/ - /* */ - /* <Constant> */ - /* FT_FACE_FLAG_EXTERNAL_STREAM */ - /* */ - /* <Description> */ - /* This bit field is used internally by FreeType to indicate that */ - /* a face's stream was provided by the client application and should */ - /* not be destroyed by FT_Done_Face(). */ - /* */ -#define FT_FACE_FLAG_EXTERNAL_STREAM 0x4000 - - - /* */ - - - /*************************************************************************/ - /* */ - /* @macro: FT_HAS_HORIZONTAL (face) */ - /* */ - /* @description: */ - /* A macro that returns true whenever a face object contains */ - /* horizontal metrics (this is true for all font formats though). */ - /* */ - /* @also: */ - /* @FT_HAS_VERTICAL can be used to check for vertical metrics. */ - /* */ -#define FT_HAS_HORIZONTAL( face ) \ - ( face->face_flags & FT_FACE_FLAG_HORIZONTAL ) - - - /*************************************************************************/ - /* */ - /* @macro: FT_HAS_VERTICAL (face) */ - /* */ - /* @description: */ - /* A macro that returns true whenever a face object contains vertical */ - /* metrics. */ - /* */ -#define FT_HAS_VERTICAL( face ) \ - ( face->face_flags & FT_FACE_FLAG_VERTICAL ) - - - /*************************************************************************/ - /* */ - /* @macro: FT_HAS_KERNING (face) */ - /* */ - /* @description: */ - /* A macro that returns true whenever a face object contains kerning */ - /* data that can be accessed with @FT_Get_Kerning. */ - /* */ -#define FT_HAS_KERNING( face ) \ - ( face->face_flags & FT_FACE_FLAG_KERNING ) - - - /*************************************************************************/ - /* */ - /* @macro: FT_IS_SCALABLE (face) */ - /* */ - /* @description: */ - /* A macro that returns true whenever a face object contains a */ - /* scalable font face (true for TrueType, Type 1, CID, and */ - /* OpenType/CFF font formats. */ - /* */ -#define FT_IS_SCALABLE( face ) \ - ( face->face_flags & FT_FACE_FLAG_SCALABLE ) - - - /*************************************************************************/ - /* */ - /* @macro: FT_IS_SFNT (face) */ - /* */ - /* @description: */ - /* A macro that returns true whenever a face object contains a font */ - /* whose format is based on the SFNT storage scheme. This usually */ - /* means: TrueType fonts, OpenType fonts, as well as SFNT-based */ - /* embedded bitmap fonts. */ - /* */ - /* If this macro is true, all functions defined in @FT_SFNT_NAMES_H */ - /* and @FT_TRUETYPE_TABLES_H are available. */ - /* */ -#define FT_IS_SFNT( face ) \ - ( face->face_flags & FT_FACE_FLAG_SFNT ) - - - /*************************************************************************/ - /* */ - /* @macro: FT_IS_FIXED_WIDTH (face) */ - /* */ - /* @description: */ - /* A macro that returns true whenever a face object contains a font */ - /* face that contains fixed-width (or "monospace", "fixed-pitch", */ - /* etc.) glyphs. */ - /* */ -#define FT_IS_FIXED_WIDTH( face ) \ - ( face->face_flags & FT_FACE_FLAG_FIXED_WIDTH ) - - - /*************************************************************************/ - /* */ - /* @macro: FT_IS_FIXED_SIZES (face) */ - /* */ - /* @description: */ - /* A macro that returns true whenever a face object contains some */ - /* embedded bitmaps. See the `fixed_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: */ - /* XXX */ - /* */ -#define FT_HAS_FAST_GLYPHS( face ) \ - ( face->face_flags & FT_FACE_FLAG_FAST_GLYPHS ) - - - /*************************************************************************/ - /* */ - /* @macro: FT_HAS_GLYPH_NAMES (face) */ - /* */ - /* @description: */ - /* A macro that returns true whenever a face object contains some */ - /* glyph names that can be accessed through @FT_Get_Glyph_Names. */ - /* */ -#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_ITALIC */ - /* */ - /* <Description> */ - /* A bit-field constant, used to indicate that a given face is */ - /* italicized. */ - /* */ -#define FT_STYLE_FLAG_ITALIC 1 - - - /*************************************************************************/ - /* */ - /* <Constant> */ - /* FT_STYLE_FLAG_BOLD */ - /* */ - /* <Description> */ - /* A bit-field constant, used to indicate that a given face is */ - /* emboldened. */ - /* */ -#define FT_STYLE_FLAG_BOLD 2 - - - /*************************************************************************/ - /* */ - /* <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; - - - /*************************************************************************/ - /* */ - /* FreeType base size metrics */ - /* */ - /* <Struct> */ - /* FT_Size_Metrics */ - /* */ - /* <Description> */ - /* The size metrics structure returned scaled important distances for */ - /* a given size object. */ - /* */ - /* <Fields> */ - /* x_ppem :: The character width, expressed in integer pixels. */ - /* This is the width of the EM square expressed in */ - /* pixels, hence the term `ppem' (pixels per EM). */ - /* */ - /* y_ppem :: The character height, expressed in integer pixels. */ - /* This is the height of the EM square expressed in */ - /* pixels, hence the term `ppem' (pixels per EM). */ - /* */ - /* x_scale :: A simple 16.16 fixed point format coefficient used */ - /* to scale horizontal distances expressed in font */ - /* units to fractional (26.6) pixel coordinates. */ - /* */ - /* y_scale :: A simple 16.16 fixed point format coefficient used */ - /* to scale vertical distances expressed in font */ - /* units to fractional (26.6) pixel coordinates. */ - /* */ - /* ascender :: The ascender, expressed in 26.6 fixed point */ - /* pixels. Always positive. */ - /* */ - /* descender :: The descender, expressed in 26.6 fixed point */ - /* pixels. Always positive. */ - /* */ - /* height :: The text height, expressed in 26.6 fixed point */ - /* pixels. Always positive. */ - /* */ - /* max_advance :: Maximum horizontal advance, expressed in 26.6 */ - /* fixed point pixels. Always positive. */ - /* */ - /* <Note> */ - /* The values of `ascender', `descender', and `height' are only the */ - /* scaled versions of `face->ascender', `face->descender', and */ - /* `face->height'. */ - /* */ - /* Unfortunately, due to glyph hinting, these values might not be */ - /* exact for certain fonts, they thus must be treated as unreliable */ - /* with an error margin of at least one pixel! */ - /* */ - /* Indeed, the only way to get the exact pixel ascender and descender */ - /* is to render _all_ glyphs. As this would be a definite */ - /* performance hit, it is up to client applications to perform such */ - /* computations. */ - /* */ - typedef struct FT_Size_Metrics_ - { - FT_UShort x_ppem; /* horizontal pixels per EM */ - FT_UShort y_ppem; /* vertical pixels per EM */ - - FT_Fixed x_scale; /* two scales used to convert font units */ - FT_Fixed y_scale; /* to 26.6 frac. pixel coordinates.. */ - - FT_Pos ascender; /* ascender in 26.6 frac. pixels */ - FT_Pos descender; /* descender in 26.6 frac. pixels */ - FT_Pos height; /* text height in 26.6 frac. pixels */ - FT_Pos max_advance; /* max horizontal advance, in 26.6 pixels */ - - } FT_Size_Metrics; - - - /*************************************************************************/ - /* */ - /* FreeType base size class */ - /* */ - /* <Struct> */ - /* FT_SizeRec */ - /* */ - /* <Description> */ - /* FreeType root size class structure. A size object models the */ - /* resolution and pointsize dependent data of a given face. */ - /* */ - /* <Fields> */ - /* face :: Handle to the parent face object. */ - /* */ - /* generic :: A typeless pointer, which is unused by the FreeType */ - /* library or any of its drivers. It can be used by */ - /* client applications to link their own data to each size */ - /* object. */ - /* */ - /* metrics :: Metrics for this size object. This field is read-only. */ - /* */ - typedef struct FT_SizeRec_ - { - FT_Face face; /* parent face object */ - FT_Generic generic; /* generic pointer for client uses */ - FT_Size_Metrics metrics; /* size metrics */ - FT_Size_Internal internal; - - } FT_SizeRec; - - - /*************************************************************************/ - /* */ - /* <Struct> */ - /* FT_SubGlyph */ - /* */ - /* <Description> */ - /* The subglyph structure is an internal object used to describe */ - /* subglyphs (for example, in the case of composites). */ - /* */ - /* <Note> */ - /* The subglyph implementation is not part of the high-level API, */ - /* hence the forward structure declaration. */ - /* */ - typedef struct FT_SubGlyph_ 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; - - - /*************************************************************************/ - /* */ - /* FreeType Glyph Slot base class */ - /* */ - /* <Struct> */ - /* FT_GlyphSlotRec */ - /* */ - /* <Description> */ - /* FreeType root glyph slot class structure. A glyph slot is a */ - /* container where individual glyphs can be loaded, be they */ - /* vectorial or bitmap/graymaps. */ - /* */ - /* <Fields> */ - /* library :: A handle to the FreeType library instance */ - /* this slot belongs to. */ - /* */ - /* face :: A handle to the parent face object. */ - /* */ - /* next :: In some cases (like some font tools), several */ - /* glyph slots per face object can be a good */ - /* thing. As this is rare, the glyph slots are */ - /* listed through a direct, single-linked list */ - /* using its `next' field. */ - /* */ - /* generic :: A typeless pointer which is unused by the */ - /* FreeType library or any of its drivers. It */ - /* can be used by client applications to link */ - /* their own data to each glyph slot object. */ - /* */ - /* metrics :: The metrics of the last loaded glyph in the */ - /* slot. The returned values depend on the last */ - /* load flags (see the FT_Load_Glyph() API */ - /* function) and can be expressed either in 26.6 */ - /* fractional pixels or font units. */ - /* */ - /* Note that even when the glyph image is */ - /* transformed, the metrics are not. */ - /* */ - /* linearHoriAdvance :: For scalable formats only, this field holds */ - /* the linearly scaled horizontal advance width */ - /* for the glyph (i.e. the scaled and unhinted */ - /* value of the hori advance). This can be */ - /* important to perform correct WYSIWYG layout. */ - /* */ - /* Note that this value is expressed by default */ - /* in 16.16 pixels. However, when the glyph is */ - /* loaded with the FT_LOAD_LINEAR_DESIGN flag, */ - /* this field contains simply the value of the */ - /* advance in original font units. */ - /* */ - /* linearVertAdvance :: For scalable formats only, this field holds */ - /* the linearly scaled vertical advance height */ - /* for the glyph. See linearHoriAdvance for */ - /* comments. */ - /* */ - /* advance :: This is the transformed advance width for the */ - /* glyph. */ - /* */ - /* format :: This field indicates the format of the image */ - /* contained in the glyph slot. Typically */ - /* ft_glyph_format_bitmap, */ - /* ft_glyph_format_outline, and */ - /* ft_glyph_format_composite, but others are */ - /* possible. */ - /* */ - /* bitmap :: This field is used as a bitmap descriptor */ - /* when the slot format is */ - /* ft_glyph_format_bitmap. Note that the */ - /* address and content of the bitmap buffer can */ - /* change between calls of FT_Load_Glyph() and a */ - /* few other functions. */ - /* */ - /* bitmap_left :: This is the bitmap's left bearing expressed */ - /* in integer pixels. Of course, this is only */ - /* valid if the format is */ - /* ft_glyph_format_bitmap. */ - /* */ - /* bitmap_top :: This is the bitmap's top bearing expressed in */ - /* integer pixels. Remember that this is the */ - /* distance from the baseline to the top-most */ - /* glyph scanline, upwards y-coordinates being */ - /* *positive*. */ - /* */ - /* outline :: The outline descriptor for the current glyph */ - /* image if its format is */ - /* ft_glyph_bitmap_outline. */ - /* */ - /* num_subglyphs :: The number of subglyphs in a composite glyph. */ - /* This format is only valid for the composite */ - /* glyph format, that should normally only be */ - /* loaded with the FT_LOAD_NO_RECURSE flag. */ - /* */ - /* subglyphs :: An array of subglyph descriptors for */ - /* composite glyphs. There are `num_subglyphs' */ - /* elements in there. */ - /* */ - /* control_data :: Certain font drivers can also return the */ - /* control data for a given glyph image (e.g. */ - /* TrueType bytecode, Type 1 charstrings, etc.). */ - /* This field is a pointer to such data. */ - /* */ - /* control_len :: This is the length in bytes of the control */ - /* data. */ - /* */ - /* other :: Really wicked formats can use this pointer to */ - /* present their own glyph image to client apps. */ - /* Note that the app will need to know about the */ - /* image format. */ - /* */ - /* <Note> */ - /* If @FT_Load_Glyph() is called with default flags (see */ - /* @FT_LOAD_DEFAULT ) the glyph image is loaded in the glyph slot in */ - /* its native format (e.g. a vectorial outline for TrueType and */ - /* Type 1 formats). */ - /* */ - /* This image can later be converted into a bitmap by calling */ - /* FT_Render_Glyph(). This function finds the current renderer for */ - /* the native image's format then invokes it. */ - /* */ - /* The renderer is in charge of transforming the native image through */ - /* the slot's face transformation fields, then convert it into a */ - /* bitmap that is returned in `slot->bitmap'. */ - /* */ - /* Note that `slot->bitmap_left' and `slot->bitmap_top' are also used */ - /* to specify the position of the bitmap relative to the current pen */ - /* position (e.g. coordinates [0,0] on the baseline). Of course, */ - /* `slot->format' is also changed to `ft_glyph_format_bitmap' . */ - /* */ - typedef struct FT_GlyphSlotRec_ - { - FT_Library library; - FT_Face face; - FT_GlyphSlot next; - FT_UInt flags; - 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; - - void* other; - - FT_Slot_Internal internal; - - } FT_GlyphSlotRec; - - - /*************************************************************************/ - /*************************************************************************/ - /* */ - /* F U N C T I O N S */ - /* */ - /*************************************************************************/ - /*************************************************************************/ - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_Init_FreeType */ - /* */ - /* <Description> */ - /* Initializes a new FreeType library object. The set of drivers */ - /* 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> */ - /* Destroys a given FreeType library object and all of its childs, */ - /* including resources, drivers, faces, sizes, etc. */ - /* */ - /* <Input> */ - /* library :: A handle to the target library object. */ - /* */ - /* <Return> */ - /* FreeType error code. 0 means success. */ - /* */ - FT_EXPORT( FT_Error ) - FT_Done_FreeType( FT_Library library ); - - - /*************************************************************************/ - /* */ - /* <Enum> */ - /* FT_Open_Flags */ - /* */ - /* <Description> */ - /* An enumeration used to list the bit flags used within the */ - /* `flags' field of the @FT_Open_Args structure. */ - /* */ - /* <Fields> */ - /* 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 pathname. */ - /* */ - /* ft_open_driver :: Use the `driver' field. */ - /* */ - /* ft_open_params :: Use the `num_params' & `params' field. */ - /* */ - /* <Note> */ - /* The `ft_open_memory', `ft_open_stream', and `ft_open_pathname' */ - /* flags are mutually exclusive. */ - /* */ - typedef enum - { - ft_open_memory = 1, - ft_open_stream = 2, - ft_open_pathname = 4, - ft_open_driver = 8, - ft_open_params = 16 - - } FT_Open_Flags; - - - /*************************************************************************/ - /* */ - /* <Struct> */ - /* FT_Parameter */ - /* */ - /* <Description> */ - /* A simple structure used to pass more or less generic parameters */ - /* to FT_Open_Face(). */ - /* */ - /* <Fields> */ - /* tag :: A 4-byte identification tag. */ - /* */ - /* data :: A pointer to the parameter data. */ - /* */ - /* <Note> */ - /* The id and function of parameters are driver-specific. */ - /* */ - typedef struct FT_Parameter_ - { - FT_ULong tag; - FT_Pointer data; - - } FT_Parameter; - - - /*************************************************************************/ - /* */ - /* <Struct> */ - /* FT_Open_Args */ - /* */ - /* <Description> */ - /* A structure used to indicate how to open a new font file/stream. */ - /* A pointer to such a structure can be used as a parameter for the */ - /* functions @FT_Open_Face() & @FT_Attach_Stream(). */ - /* */ - /* <Fields> */ - /* flags :: A set of bit flags indicating how to use the */ - /* structure. */ - /* */ - /* memory_base :: The first byte of the file in memory. */ - /* */ - /* memory_size :: The size in bytes of the file in memory. */ - /* */ - /* pathname :: A pointer to an 8-bit file pathname. */ - /* */ - /* stream :: A handle to a source stream object. */ - /* */ - /* driver :: This field is exclusively used by FT_Open_Face(); */ - /* it simply specifies the font driver to use to open */ - /* the face. If set to 0, FreeType will try to load */ - /* the face with each one of the drivers in its list. */ - /* */ - /* num_params :: The number of extra parameters. */ - /* */ - /* params :: Extra parameters passed to the font driver when */ - /* opening a new face. */ - /* */ - /* <Note> */ - /* The stream type is determined by the contents of `flags' which */ - /* are tested in the following order by @FT_Open_Face: */ - /* */ - /* If the `ft_open_memory' bit is set, assume that this is a */ - /* memory file of `memory_size' bytes,located at `memory_address'. */ - /* */ - /* Otherwise, if the `ft_open_stream' bit is set, assume that a */ - /* custom input stream `stream' is used. */ - /* */ - /* Otherwise, if the `ft_open_pathname' bit is set, assume that this */ - /* is a normal file and use `pathname' to open it. */ - /* */ - /* If the `ft_open_driver' bit is set, @FT_Open_Face() will only */ - /* try to open the file with the driver whose handler is in `driver'. */ - /* */ - /* If the `ft_open_params' bit is set, the parameters given by */ - /* `num_params' and `params' will be used. They are ignored */ - /* otherwise. */ - /* */ - typedef struct FT_Open_Args_ - { - FT_Open_Flags flags; - const FT_Byte* memory_base; - FT_Long memory_size; - FT_String* pathname; - FT_Stream stream; - FT_Module driver; - FT_Int num_params; - FT_Parameter* params; - - } FT_Open_Args; - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_New_Face */ - /* */ - /* <Description> */ - /* Creates a new face object from a given resource and typeface index */ - /* using a pathname to the font file. */ - /* */ - /* <InOut> */ - /* library :: A handle to the library resource. */ - /* */ - /* <Input> */ - /* pathname :: A path to the font file. */ - /* */ - /* face_index :: The index of the face within the resource. The */ - /* first face has index 0. */ - /* <Output> */ - /* aface :: A handle to a new face object. */ - /* */ - /* <Return> */ - /* FreeType error code. 0 means success. */ - /* */ - /* <Note> */ - /* Unlike FreeType 1.x, this function automatically creates a glyph */ - /* slot for the face object which can be accessed directly through */ - /* `face->glyph'. */ - /* */ - /* FT_New_Face() can be used to determine and/or check the font */ - /* format of a given font resource. If the `face_index' field is */ - /* negative, the function will _not_ return any face handle in */ - /* `aface'. Its return value should be 0 if the font format is */ - /* recognized, or non-zero otherwise. */ - /* */ - FT_EXPORT( FT_Error ) - FT_New_Face( FT_Library library, - const char* filepathname, - FT_Long face_index, - FT_Face *aface ); - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_New_Memory_Face */ - /* */ - /* <Description> */ - /* Creates a new face object from a given resource and typeface index */ - /* using a font file already loaded into memory. */ - /* */ - /* <InOut> */ - /* library :: A handle to the library resource. */ - /* */ - /* <Input> */ - /* file_base :: A pointer to the beginning of the font data. */ - /* */ - /* file_size :: The size of the memory chunk used by the font data. */ - /* */ - /* face_index :: The index of the face within the resource. The */ - /* first face has index 0. */ - /* <Output> */ - /* aface :: A handle to a new face object. */ - /* */ - /* <Return> */ - /* FreeType error code. 0 means success. */ - /* */ - /* <Note> */ - /* The font data bytes are used _directly_ by the @FT_Face object. */ - /* This means that they are not copied, and that the client is */ - /* responsible for releasing/destroying them _after_ the */ - /* corresponding call to @FT_Done_Face . */ - /* */ - /* Unlike FreeType 1.x, this function automatically creates a glyph */ - /* slot for the face object which can be accessed directly through */ - /* `face->glyph'. */ - /* */ - /* FT_New_Memory_Face() can be used to determine and/or check the */ - /* font format of a given font resource. If the `face_index' field */ - /* is negative, the function will _not_ return any face handle in */ - /* `aface'. Its return value should be 0 if the font format is */ - /* recognized, or non-zero otherwise. */ - /* */ - FT_EXPORT( FT_Error ) - FT_New_Memory_Face( FT_Library library, - const FT_Byte* file_base, - FT_Long file_size, - FT_Long face_index, - FT_Face *aface ); - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_Open_Face */ - /* */ - /* <Description> */ - /* Opens a face object from a given resource and typeface index using */ - /* an `FT_Open_Args' structure. If the face object doesn't exist, it */ - /* will be created. */ - /* */ - /* <InOut> */ - /* library :: A handle to the library resource. */ - /* */ - /* <Input> */ - /* args :: A pointer to an `FT_Open_Args' structure which must */ - /* be filled by the caller. */ - /* */ - /* face_index :: The index of the face within the resource. The */ - /* first face has index 0. */ - /* <Output> */ - /* aface :: A handle to a new face object. */ - /* */ - /* <Return> */ - /* FreeType error code. 0 means success. */ - /* */ - /* <Note> */ - /* Unlike FreeType 1.x, this function automatically creates a glyph */ - /* slot for the face object which can be accessed directly through */ - /* `face->glyph'. */ - /* */ - /* FT_Open_Face() can be used to determine and/or check the font */ - /* format of a given font resource. If the `face_index' field is */ - /* negative, the function will _not_ return any face handle in */ - /* `*face'. Its return value should be 0 if the font format is */ - /* recognized, or non-zero otherwise. */ - /* */ - FT_EXPORT( FT_Error ) - FT_Open_Face( FT_Library library, - FT_Open_Args* args, - FT_Long face_index, - FT_Face *aface ); - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_Attach_File */ - /* */ - /* <Description> */ - /* `Attaches' a given font file to an existing face. This is usually */ - /* to read additional information for a single face object. For */ - /* example, it is used to read the AFM files that come with Type 1 */ - /* fonts in order to add kerning data and other metrics. */ - /* */ - /* <InOut> */ - /* face :: The target face object. */ - /* */ - /* <Input> */ - /* filepathname :: An 8-bit pathname naming the `metrics' file. */ - /* */ - /* <Return> */ - /* FreeType error code. 0 means success. */ - /* */ - /* <Note> */ - /* If your font file is in memory, or if you want to provide your */ - /* own input stream object, use FT_Attach_Stream(). */ - /* */ - /* The meaning of the `attach' action (i.e., what really happens when */ - /* the new file is read) is not fixed by FreeType itself. It really */ - /* depends on the font format (and thus the font driver). */ - /* */ - /* Client applications are expected to know what they are doing */ - /* when invoking this function. Most drivers simply do not implement */ - /* file attachments. */ - /* */ - FT_EXPORT( FT_Error ) - FT_Attach_File( FT_Face face, - const char* filepathname ); - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_Attach_Stream */ - /* */ - /* <Description> */ - /* This function is similar to FT_Attach_File() with the exception */ - /* that it reads the attachment from an arbitrary stream. */ - /* */ - /* <InOut> */ - /* face :: The target face object. */ - /* */ - /* <Input> */ - /* parameters :: A pointer to an FT_Open_Args structure used to */ - /* describe the input stream to FreeType. */ - /* <Return> */ - /* FreeType error code. 0 means success. */ - /* */ - /* <Note> */ - /* The meaning of the `attach' (i.e. what really happens when the */ - /* new file is read) is not fixed by FreeType itself. It really */ - /* depends on the font format (and thus the font driver). */ - /* */ - /* Client applications are expected to know what they are doing */ - /* when invoking this function. Most drivers simply do not implement */ - /* file attachments. */ - /* */ - FT_EXPORT( FT_Error ) - FT_Attach_Stream( FT_Face face, - FT_Open_Args* parameters ); - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_Done_Face */ - /* */ - /* <Description> */ - /* Discards a given face object, as well as all of its child slots */ - /* and sizes. */ - /* */ - /* <Input> */ - /* face :: A handle to a target face object. */ - /* */ - /* <Return> */ - /* FreeType error code. 0 means success. */ - /* */ - FT_EXPORT( FT_Error ) - FT_Done_Face( FT_Face face ); - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_Set_Char_Size */ - /* */ - /* <Description> */ - /* Sets the character dimensions of a given face object. The */ - /* `char_width' and `char_height' values are used for the width and */ - /* height, respectively, expressed in 26.6 fractional points. */ - /* */ - /* If the horizontal or vertical resolution values are zero, a */ - /* default value of 72dpi is used. Similarly, if one of the */ - /* character dimensions is zero, its value is set equal to the other. */ - /* */ - /* <InOut> */ - /* size :: A handle to a target size object. */ - /* */ - /* <Input> */ - /* char_width :: The character width, in 26.6 fractional points. */ - /* */ - /* char_height :: The character height, in 26.6 fractional */ - /* points. */ - /* */ - /* horz_resolution :: The horizontal resolution. */ - /* */ - /* vert_resolution :: The vertical resolution. */ - /* */ - /* <Return> */ - /* FreeType error code. 0 means success. */ - /* */ - /* <Note> */ - /* When dealing with fixed-size faces (i.e., non-scalable formats), */ - /* use the function FT_Set_Pixel_Sizes(). */ - /* */ - FT_EXPORT( FT_Error ) - FT_Set_Char_Size( FT_Face face, - FT_F26Dot6 char_width, - FT_F26Dot6 char_height, - FT_UInt horz_resolution, - FT_UInt vert_resolution ); - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_Set_Pixel_Sizes */ - /* */ - /* <Description> */ - /* Sets the character dimensions of a given face object. The width */ - /* and height are expressed in integer pixels. */ - /* */ - /* If one of the character dimensions is zero, its value is set equal */ - /* to the other. */ - /* */ - /* <InOut> */ - /* face :: A handle to the target face object. */ - /* */ - /* <Input> */ - /* pixel_width :: The character width, in integer pixels. */ - /* */ - /* pixel_height :: The character height, in integer pixels. */ - /* */ - /* <Return> */ - /* FreeType error code. 0 means success. */ - /* */ - /* */ - /* <Note> */ - /* The values of `pixel_width' and `pixel_height' correspond to the */ - /* pixel values of the _typographic_ character size, which are NOT */ - /* necessarily the same as the dimensions of the glyph `bitmap */ - /* cells'. */ - /* */ - /* The `character size' is really the size of an abstract square */ - /* called the `EM', used to design the font. However, depending */ - /* on the font design, glyphs will be smaller or greater than the */ - /* EM. */ - /* */ - /* This means that setting the pixel size to, say, 8x8 doesn't */ - /* guarantee in any way that you will get glyph bitmaps that all fit */ - /* within an 8x8 cell (sometimes even far from it). */ - /* */ - FT_EXPORT( FT_Error ) - FT_Set_Pixel_Sizes( FT_Face face, - FT_UInt pixel_width, - FT_UInt pixel_height ); - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_Load_Glyph */ - /* */ - /* <Description> */ - /* A function used to load a single glyph within a given glyph slot, */ - /* for a given size. */ - /* */ - /* <InOut> */ - /* face :: A handle to the target face object where the glyph */ - /* will be loaded. */ - /* */ - /* <Input> */ - /* glyph_index :: The index of the glyph in the font file. */ - /* */ - /* load_flags :: A flag indicating what to load for this glyph. The */ - /* FT_LOAD_XXX constants can be used to control the */ - /* glyph loading process (e.g., whether the outline */ - /* should be scaled, whether to load bitmaps or not, */ - /* whether to hint the outline, etc). */ - /* */ - /* <Return> */ - /* FreeType error code. 0 means success. */ - /* */ - /* <Note> */ - /* If the glyph image is not a bitmap, and if the bit flag */ - /* FT_LOAD_IGNORE_TRANSFORM is unset, the glyph image will be */ - /* transformed with the information passed to a previous call to */ - /* FT_Set_Transform(). */ - /* */ - /* Note that this also transforms the `face.glyph.advance' field, but */ - /* *not* the values in `face.glyph.metrics'. */ - /* */ - FT_EXPORT( FT_Error ) - FT_Load_Glyph( FT_Face face, - FT_UInt glyph_index, - FT_Int load_flags ); - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_Load_Char */ - /* */ - /* <Description> */ - /* A function used to load a single glyph within a given glyph slot, */ - /* for a given size, according to its character code. */ - /* */ - /* <InOut> */ - /* face :: A handle to a target face object where the glyph */ - /* will be loaded. */ - /* */ - /* <Input> */ - /* char_code :: The glyph's character code, according to the */ - /* current charmap used in the face. */ - /* */ - /* load_flags :: A flag indicating what to load for this glyph. The */ - /* FT_LOAD_XXX constants can be used to control the */ - /* glyph loading process (e.g., whether the outline */ - /* should be scaled, whether to load bitmaps or not, */ - /* whether to hint the outline, etc). */ - /* */ - /* <Return> */ - /* FreeType error code. 0 means success. */ - /* */ - /* <Note> */ - /* If the face has no current charmap, or if the character code */ - /* is not defined in the charmap, this function will return an */ - /* error. */ - /* */ - /* If the glyph image is not a bitmap, and if the bit flag */ - /* FT_LOAD_IGNORE_TRANSFORM is unset, the glyph image will be */ - /* transformed with the information passed to a previous call to */ - /* FT_Set_Transform(). */ - /* */ - /* Note that this also transforms the `face.glyph.advance' field, but */ - /* *not* the values in `face.glyph.metrics'. */ - /* */ - FT_EXPORT( FT_Error ) - FT_Load_Char( FT_Face face, - FT_ULong char_code, - FT_Int load_flags ); - - - /*************************************************************************/ - /* */ - /* <Constant> */ - /* FT_LOAD_NO_SCALE */ - /* */ - /* <Description> */ - /* A bit field constant, used with FT_Load_Glyph() to indicate that */ - /* the vector outline being loaded should not be scaled to 26.6 */ - /* fractional pixels, but kept in notional units. */ - /* */ -#define FT_LOAD_NO_SCALE 1 - - - /*************************************************************************/ - /* */ - /* <Constant> */ - /* FT_LOAD_NO_HINTING */ - /* */ - /* <Description> */ - /* A bit-field constant, used with FT_Load_Glyph() to indicate that */ - /* the vector outline being loaded should not be fitted to the pixel */ - /* grid but simply scaled to 26.6 fractional pixels. */ - /* */ - /* This flag is ignored if FT_LOAD_NO_SCALE is set. */ - /* */ -#define FT_LOAD_NO_HINTING 2 - - - /*************************************************************************/ - /* */ - /* <Constant> */ - /* FT_LOAD_RENDER */ - /* */ - /* <Description> */ - /* A bit-field constant, used with FT_Load_Glyph() to indicate that */ - /* the function should load the glyph and immediately convert it into */ - /* a bitmap, if necessary, by calling FT_Render_Glyph(). */ - /* */ - /* Note that by default, FT_Load_Glyph() loads the glyph image in its */ - /* native format. */ - /* */ -#define FT_LOAD_RENDER 4 - - - /*************************************************************************/ - /* */ - /* <Constant> */ - /* FT_LOAD_NO_BITMAP */ - /* */ - /* <Description> */ - /* A bit-field constant, used with FT_Load_Glyph() to indicate that */ - /* the function should not load the bitmap or pixmap of a given */ - /* glyph. This is useful when you do not want to load the embedded */ - /* bitmaps of scalable formats, as the native glyph image will be */ - /* loaded, and can then be rendered through FT_Render_Glyph(). */ - /* */ -#define FT_LOAD_NO_BITMAP 8 - - - /*************************************************************************/ - /* */ - /* <Constant> */ - /* FT_LOAD_VERTICAL_LAYOUT */ - /* */ - /* <Description> */ - /* A bit-field constant, used with FT_Load_Glyph() to indicate that */ - /* the glyph image should be prepared for vertical layout. This */ - /* basically means that `face.glyph.advance' will correspond to the */ - /* vertical advance height (instead of the default horizontal */ - /* advance width), and that the glyph image will translated to match */ - /* the vertical bearings positions. */ - /* */ -#define FT_LOAD_VERTICAL_LAYOUT 16 - - - /*************************************************************************/ - /* */ - /* <Constant> */ - /* FT_LOAD_FORCE_AUTOHINT */ - /* */ - /* <Description> */ - /* A bit-field constant, used with FT_Load_Glyph() to indicate that */ - /* the function should try to auto-hint the glyphs, even if a driver */ - /* specific hinter is available. */ - /* */ -#define FT_LOAD_FORCE_AUTOHINT 32 - - - /*************************************************************************/ - /* */ - /* <Constant> */ - /* FT_LOAD_CROP_BITMAP */ - /* */ - /* <Description> */ - /* A bit-field constant, used with FT_Load_Glyph() to indicate that */ - /* the font driver should try to crop the bitmap (i.e. remove all */ - /* space around its black bits) when loading it. For now, this */ - /* really only works with embedded bitmaps in TrueType fonts. */ - /* */ -#define FT_LOAD_CROP_BITMAP 64 - - - /*************************************************************************/ - /* */ - /* <Constant> */ - /* FT_LOAD_PEDANTIC */ - /* */ - /* <Description> */ - /* A bit-field constant, used with FT_Load_Glyph() to indicate that */ - /* the glyph loader should perform a pedantic bytecode */ - /* interpretation. Many popular fonts come with broken glyph */ - /* programs. When this flag is set, loading them will return an */ - /* error. Otherwise, errors are ignored by the loader, sometimes */ - /* resulting in ugly glyphs. */ - /* */ -#define FT_LOAD_PEDANTIC 128 - - - /*************************************************************************/ - /* */ - /* <Constant> */ - /* FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH */ - /* */ - /* <Description> */ - /* A bit-field constant, used with FT_Load_Glyph() to indicate that */ - /* the glyph loader should ignore the global advance width defined */ - /* in the font. As far as we know, this is only used by the */ - /* X-TrueType font server, in order to deal correctly with the */ - /* incorrect metrics contained in DynaLab's TrueType CJK fonts. */ - /* */ -#define FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH 512 - - - /*************************************************************************/ - /* */ - /* <Constant> */ - /* FT_LOAD_NO_RECURSE */ - /* */ - /* <Description> */ - /* A bit-field constant, used with FT_Load_Glyph() to indicate that */ - /* the glyph loader should not load composite glyph recursively. */ - /* Rather, when a composite glyph is encountered, it should set */ - /* the values of `num_subglyphs' and `subglyphs', as well as set */ - /* `face->glyph.format' to ft_glyph_format_composite. */ - /* */ - /* This is for use by the auto-hinter and possibly other tools. */ - /* For nearly all applications, this flags should be left unset */ - /* when invoking FT_Load_Glyph(). */ - /* */ - /* Note that the flag forces the load of unscaled glyphs. */ - /* */ -#define FT_LOAD_NO_RECURSE 1024 - - - /*************************************************************************/ - /* */ - /* <Constant> */ - /* FT_LOAD_IGNORE_TRANSFORM */ - /* */ - /* <Description> */ - /* A bit-field constant, used with FT_Load_Glyph() to indicate that */ - /* the glyph loader should not try to transform the loaded glyph */ - /* image. */ - /* */ -#define FT_LOAD_IGNORE_TRANSFORM 2048 - - - /*************************************************************************/ - /* */ - /* <Constant> */ - /* FT_LOAD_MONOCHROME */ - /* */ - /* <Description> */ - /* Only used with FT_LOAD_RENDER set, it indicates that the returned */ - /* glyph image should be 1-bit monochrome. This really tells the */ - /* glyph loader to use `ft_render_mode_mono' when calling */ - /* FT_Render_Glyph(). */ - /* */ -#define FT_LOAD_MONOCHROME 4096 - - - /*************************************************************************/ - /* */ - /* <Constant> */ - /* FT_LOAD_LINEAR_DESIGN */ - /* */ - /* <Description> */ - /* A bit-field constant, used with FT_Load_Glyph() to indicate that */ - /* the function should return the linearly scaled metrics expressed */ - /* in original font units, instead of the default 16.16 pixel values. */ - /* */ -#define FT_LOAD_LINEAR_DESIGN 8192 - - - /*************************************************************************/ - /* */ - /* <Constant> */ - /* FT_LOAD_DEFAULT */ - /* */ - /* <Description> */ - /* A bit-field constant, used with FT_Load_Glyph() to indicate that */ - /* the function should try to load the glyph normally, i.e., */ - /* embedded bitmaps are favored over outlines, vectors are always */ - /* scaled and grid-fitted. */ - /* */ -#define FT_LOAD_DEFAULT 0 - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_Set_Transform */ - /* */ - /* <Description> */ - /* A function used to set the transformation that is applied to glyph */ - /* images just before they are converted to bitmaps in a glyph slot */ - /* when FT_Render_Glyph() is called. */ - /* */ - /* <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_Sizes() or FT_Set_Pixel_Sizes(). */ - /* */ - FT_EXPORT( void ) - FT_Set_Transform( FT_Face face, - FT_Matrix* matrix, - FT_Vector* delta ); - - - /*************************************************************************/ - /* */ - /* <Enum> */ - /* FT_Render_Mode */ - /* */ - /* <Description> */ - /* An enumeration type that lists the render modes supported by the */ - /* FreeType 2 renderer(s). A renderer is in charge of converting a */ - /* glyph image into a bitmap. */ - /* */ - /* <Fields> */ - /* ft_render_mode_normal :: This is the default render mode; it */ - /* corresponds to 8-bit anti-aliased */ - /* bitmaps, using 256 levels of gray. */ - /* */ - /* ft_render_mode_mono :: This render mode is used to produce 1-bit */ - /* monochrome bitmaps. */ - /* */ - /* <Note> */ - /* There is no render mode to produce 8-bit `monochrome' bitmaps -- */ - /* you have to make the conversion yourself if you need such things */ - /* (besides, FreeType is not a graphics library). */ - /* */ - /* More modes might appear later for specific display modes (e.g. TV, */ - /* LCDs, etc.). They will be supported through the simple addition */ - /* of a renderer module, with no changes to the rest of the engine. */ - /* */ - typedef enum FT_Render_Mode_ - { - ft_render_mode_normal = 0, - ft_render_mode_mono = 1 - - } FT_Render_Mode; - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_Render_Glyph */ - /* */ - /* <Description> */ - /* Converts a given glyph image to a bitmap. It does so by */ - /* inspecting the glyph image format, find the relevant renderer, and */ - /* invoke it. */ - /* */ - /* <InOut> */ - /* slot :: A handle to the glyph slot containing the image to */ - /* convert. */ - /* */ - /* <Input> */ - /* render_mode :: This is the render mode used to render the glyph */ - /* image into a bitmap. See FT_Render_Mode for a list */ - /* of possible values. */ - /* */ - /* <Return> */ - /* FreeType error code. 0 means success. */ - /* */ - FT_EXPORT( FT_Error ) - FT_Render_Glyph( FT_GlyphSlot slot, - FT_UInt render_mode ); - - - /*************************************************************************/ - /* */ - /* <Enum> */ - /* FT_Kerning_Mode */ - /* */ - /* <Description> */ - /* An enumeration used to specify which kerning values to return in */ - /* FT_Get_Kerning(). */ - /* */ - /* <Fields> */ - /* 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; - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_Get_Kerning */ - /* */ - /* <Description> */ - /* Returns the kerning vector between two glyphs of a same face. */ - /* */ - /* <Input> */ - /* face :: A handle to a source face object. */ - /* */ - /* left_glyph :: The index of the left glyph in the kern pair. */ - /* */ - /* right_glyph :: The index of the right glyph in the kern pair. */ - /* */ - /* kern_mode :: See FT_Kerning_Mode() for more information. */ - /* Determines the scale/dimension of the returned */ - /* kerning vector. */ - /* */ - /* <Output> */ - /* akerning :: The kerning vector. This is in font units for */ - /* scalable formats, and in pixels for fixed-sizes */ - /* formats. */ - /* */ - /* <Return> */ - /* FreeType error code. 0 means success. */ - /* */ - /* <Note> */ - /* Only horizontal layouts (left-to-right & right-to-left) are */ - /* supported by this method. Other layouts, or more sophisticated */ - /* kernings, are out of the scope of this API function -- they can be */ - /* implemented through format-specific interfaces. */ - /* */ - FT_EXPORT( FT_Error ) - FT_Get_Kerning( FT_Face face, - FT_UInt left_glyph, - FT_UInt right_glyph, - FT_UInt kern_mode, - FT_Vector *akerning ); - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_Get_Glyph_Name */ - /* */ - /* <Description> */ - /* Retrieves the ASCII name of a given glyph in a face. This only */ - /* works for those faces where FT_HAS_GLYPH_NAME(face) returns true. */ - /* */ - /* <Input> */ - /* face :: A handle to a source face object. */ - /* */ - /* glyph_index :: The glyph index. */ - /* */ - /* buffer_max :: The maximal number of bytes available in the */ - /* buffer. */ - /* */ - /* <Output> */ - /* buffer :: A pointer to a target buffer where the name will be */ - /* copied to. */ - /* */ - /* <Return> */ - /* FreeType error code. 0 means success. */ - /* */ - /* <Note> */ - /* An error is returned if the face doesn't provide glyph names or if */ - /* the glyph index is invalid. In all cases of failure, the first */ - /* byte of `buffer' will be set to 0 to indicate an empty name. */ - /* */ - /* The glyph name is truncated to fit within the buffer if it is too */ - /* long. The returned string is always zero-terminated. */ - /* */ - /* This function is not compiled within the library if the config */ - /* macro FT_CONFIG_OPTION_NO_GLYPH_NAMES is defined in */ - /* `include/freetype/config/ftoptions.h' */ - /* */ - FT_EXPORT( FT_Error ) - FT_Get_Glyph_Name( FT_Face face, - FT_UInt glyph_index, - FT_Pointer buffer, - FT_UInt buffer_max ); - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_Get_Postscript_Name */ - /* */ - /* <Description> */ - /* Retrieves the ASCII Postscript name of a given face, when */ - /* available. This should only work with Postscript and TrueType */ - /* fonts.. */ - /* */ - /* <Input> */ - /* face :: handle to source face object. */ - /* */ - /* <Return> */ - /* pointer to face's Postscript name. NULL when un-available */ - /* */ - /* <Note> */ - /* The returned pointer is owned by the face and will be destroyed */ - /* with it. */ - /* */ - FT_EXPORT( const char* ) - FT_Get_Postscript_Name( FT_Face face ); - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_Select_Charmap */ - /* */ - /* <Description> */ - /* Selects a given charmap by its encoding tag (as listed in */ - /* `freetype.h'). */ - /* */ - /* <InOut> */ - /* face :: A handle to the source face object. */ - /* */ - /* <Input> */ - /* encoding :: A handle to the selected charmap. */ - /* */ - /* <Return> */ - /* FreeType error code. 0 means success. */ - /* */ - /* <Note> */ - /* This function will return an error if no charmap in the face */ - /* corresponds to the encoding queried here. */ - /* */ - FT_EXPORT( FT_Error ) - FT_Select_Charmap( FT_Face face, - FT_Encoding encoding ); - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_Set_Charmap */ - /* */ - /* <Description> */ - /* Selects a given charmap for character code to glyph index */ - /* decoding. */ - /* */ - /* <InOut> */ - /* face :: A handle to the source face object. */ - /* */ - /* <Input> */ - /* charmap :: A handle to the selected charmap. */ - /* */ - /* <Return> */ - /* FreeType error code. 0 means success. */ - /* */ - /* <Note> */ - /* This function will return an error if the charmap is not part of */ - /* the face (i.e., if it is not listed in the face->charmaps[] */ - /* table). */ - /* */ - FT_EXPORT( FT_Error ) - FT_Set_Charmap( FT_Face face, - FT_CharMap charmap ); - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_Get_Char_Index */ - /* */ - /* <Description> */ - /* Returns the glyph index of a given character code. This function */ - /* uses a charmap object to do the translation. */ - /* */ - /* <Input> */ - /* face :: A handle to the source face object. */ - /* */ - /* charcode :: The character code. */ - /* */ - /* <Return> */ - /* The glyph index. 0 means `undefined character code'. */ - /* */ - FT_EXPORT( FT_UInt ) - FT_Get_Char_Index( FT_Face face, - FT_ULong charcode ); - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_Get_Name_Index */ - /* */ - /* <Description> */ - /* Returns the glyph index of a given glyph name. This function uses */ - /* driver specific objects to do the translation. */ - /* */ - /* <Input> */ - /* face :: A handle to the source face object. */ - /* */ - /* glyph_name :: The glyph name. */ - /* */ - /* <Return> */ - /* The glyph index. 0 means `undefined character code'. */ - /* */ - FT_EXPORT( FT_UInt ) - FT_Get_Name_Index( FT_Face face, - FT_String* glyph_name ); - - - - /*************************************************************************/ - /* */ - /* <Section> */ - /* computations */ - /* */ - /* <Title> */ - /* Computations */ - /* */ - /* <Abstract> */ - /* Crunching fixed numbers and vectors */ - /* */ - /* <Description> */ - /* This section contains various functions used to perform */ - /* computations on 16.16 fixed-float numbers or 2d vectors. */ - /* */ - /* <Order> */ - /* FT_MulDiv */ - /* FT_MulFix */ - /* FT_DivFix */ - /* FT_RoundFix */ - /* FT_CeilFix */ - /* FT_FloorFix */ - /* FT_Vector_Transform */ - /* FT_Matrix_Multiply */ - /* FT_Matrix_Invert */ - /* */ - /*************************************************************************/ - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_MulDiv */ - /* */ - /* <Description> */ - /* A very simple function used to perform the computation `(a*b)/c' */ - /* with maximal accuracy (it uses a 64-bit intermediate integer */ - /* whenever necessary). */ - /* */ - /* This function isn't necessarily as fast as some processor specific */ - /* operations, but is at least completely portable. */ - /* */ - /* <Input> */ - /* a :: The first multiplier. */ - /* b :: The second multiplier. */ - /* c :: The divisor. */ - /* */ - /* <Return> */ - /* The result of `(a*b)/c'. This function never traps when trying to */ - /* divide by zero; it simply returns `MaxInt' or `MinInt' depending */ - /* on the signs of `a' and `b'. */ - /* */ - FT_EXPORT( FT_Long ) - FT_MulDiv( FT_Long a, - FT_Long b, - FT_Long c ); - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_MulFix */ - /* */ - /* <Description> */ - /* A very simple function used to perform the computation */ - /* `(a*b)/0x10000' with maximal accuracy. Most of the time this is */ - /* used to multiply a given value by a 16.16 fixed float factor. */ - /* */ - /* <Input> */ - /* a :: The first multiplier. */ - /* b :: The second multiplier. Use a 16.16 factor here whenever */ - /* possible (see note below). */ - /* */ - /* <Return> */ - /* The result of `(a*b)/0x10000'. */ - /* */ - /* <Note> */ - /* This function has been optimized for the case where the absolute */ - /* value of `a' is less than 2048, and `b' is a 16.16 scaling factor. */ - /* As this happens mainly when scaling from notional units to */ - /* fractional pixels in FreeType, it resulted in noticeable speed */ - /* improvements between versions 2.x and 1.x. */ - /* */ - /* As a conclusion, always try to place a 16.16 factor as the */ - /* _second_ argument of this function; this can make a great */ - /* difference. */ - /* */ - FT_EXPORT( FT_Long ) - FT_MulFix( FT_Long a, - FT_Long b ); - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_DivFix */ - /* */ - /* <Description> */ - /* A very simple function used to perform the computation */ - /* `(a*0x10000)/b' with maximal accuracy. Most of the time, this is */ - /* used to divide a given value by a 16.16 fixed float factor. */ - /* */ - /* <Input> */ - /* a :: The first multiplier. */ - /* b :: The second multiplier. Use a 16.16 factor here whenever */ - /* possible (see note below). */ - /* */ - /* <Return> */ - /* The result of `(a*0x10000)/b'. */ - /* */ - /* <Note> */ - /* The optimization for FT_DivFix() is simple: If (a << 16) fits in */ - /* 32 bits, then the division is computed directly. Otherwise, we */ - /* use a specialized version of the old FT_MulDiv64(). */ - /* */ - FT_EXPORT( FT_Long ) - FT_DivFix( FT_Long a, - FT_Long b ); - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_RoundFix */ - /* */ - /* <Description> */ - /* A very simple function used to round a 16.16 fixed number. */ - /* */ - /* <Input> */ - /* a :: The number to be rounded. */ - /* */ - /* <Return> */ - /* The result of `(a + 0x8000) & -0x10000'. */ - /* */ - FT_EXPORT( FT_Fixed ) - FT_RoundFix( FT_Fixed a ); - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_CeilFix */ - /* */ - /* <Description> */ - /* A very simple function used to compute the ceiling function of a */ - /* 16.16 fixed number. */ - /* */ - /* <Input> */ - /* a :: The number for which the ceiling function is to be computed. */ - /* */ - /* <Return> */ - /* The result of `(a + 0x10000 - 1) & -0x10000'. */ - /* */ - FT_EXPORT( FT_Fixed ) - FT_CeilFix( FT_Fixed a ); - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_FloorFix */ - /* */ - /* <Description> */ - /* A very simple function used to compute the floor function of a */ - /* 16.16 fixed number. */ - /* */ - /* <Input> */ - /* a :: The number for which the floor function is to be computed. */ - /* */ - /* <Return> */ - /* The result of `a & -0x10000'. */ - /* */ - FT_EXPORT( FT_Fixed ) - FT_FloorFix( FT_Fixed a ); - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* FT_Vector_Transform */ - /* */ - /* <Description> */ - /* Transforms a single vector through a 2x2 matrix. */ - /* */ - /* <InOut> */ - /* vector :: The target vector to transform. */ - /* */ - /* <Input> */ - /* matrix :: A pointer to the source 2x2 matrix. */ - /* */ - /* <Note> */ - /* The result is undefined if either `vector' or `matrix' is invalid. */ - /* */ - FT_EXPORT( void ) - FT_Vector_Transform( FT_Vector* vec, - FT_Matrix* matrix ); - - - /* */ - - -FT_END_HEADER - -#endif /* __FREETYPE_H__ */ - - -/* END */