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ftbdf.h
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/***************************************************************************/ /* */ /* ftbdf.h */ /* */ /* FreeType API for accessing BDF-specific strings (specification). */ /* */ /* Copyright 2002-2017 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 FTBDF_H_ #define FTBDF_H_ #include <ft2build.h> #include FT_FREETYPE_H #ifdef FREETYPE_H #error "freetype.h of FreeType 1 has been loaded!" #error "Please fix the directory search order for header files" #error "so that freetype.h of FreeType 2 is found first." #endif FT_BEGIN_HEADER /*************************************************************************/ /* */ /* <Section> */ /* bdf_fonts */ /* */ /* <Title> */ /* BDF and PCF Files */ /* */ /* <Abstract> */ /* BDF and PCF specific API. */ /* */ /* <Description> */ /* This section contains the declaration of functions specific to BDF */ /* and PCF fonts. */ /* */ /*************************************************************************/ /********************************************************************** * * @enum: * BDF_PropertyType * * @description: * A list of BDF property types. * * @values: * BDF_PROPERTY_TYPE_NONE :: * Value~0 is used to indicate a missing property. * * BDF_PROPERTY_TYPE_ATOM :: * Property is a string atom. * * BDF_PROPERTY_TYPE_INTEGER :: * Property is a 32-bit signed integer. * * BDF_PROPERTY_TYPE_CARDINAL :: * Property is a 32-bit unsigned integer. */ typedef enum BDF_PropertyType_ { BDF_PROPERTY_TYPE_NONE = 0, BDF_PROPERTY_TYPE_ATOM = 1, BDF_PROPERTY_TYPE_INTEGER = 2, BDF_PROPERTY_TYPE_CARDINAL = 3 } BDF_PropertyType; /********************************************************************** * * @type: * BDF_Property * * @description: * A handle to a @BDF_PropertyRec structure to model a given * BDF/PCF property. */ typedef struct BDF_PropertyRec_* BDF_Property; /********************************************************************** * * @struct: * BDF_PropertyRec * * @description: * This structure models a given BDF/PCF property. * * @fields: * type :: * The property type. * * u.atom :: * The atom string, if type is @BDF_PROPERTY_TYPE_ATOM. May be * NULL, indicating an empty string. * * u.integer :: * A signed integer, if type is @BDF_PROPERTY_TYPE_INTEGER. * * u.cardinal :: * An unsigned integer, if type is @BDF_PROPERTY_TYPE_CARDINAL. */ typedef struct BDF_PropertyRec_ { BDF_PropertyType type; union { const char* atom; FT_Int32 integer; FT_UInt32 cardinal; } u; } BDF_PropertyRec; /********************************************************************** * * @function: * FT_Get_BDF_Charset_ID * * @description: * Retrieve a BDF font character set identity, according to * the BDF specification. * * @input: * face :: * A handle to the input face. * * @output: * acharset_encoding :: * Charset encoding, as a C~string, owned by the face. * * acharset_registry :: * Charset registry, as a C~string, owned by the face. * * @return: * FreeType error code. 0~means success. * * @note: * This function only works with BDF faces, returning an error otherwise. */ FT_EXPORT( FT_Error ) FT_Get_BDF_Charset_ID( FT_Face face, const char* *acharset_encoding, const char* *acharset_registry ); /********************************************************************** * * @function: * FT_Get_BDF_Property * * @description: * Retrieve a BDF property from a BDF or PCF font file. * * @input: * face :: A handle to the input face. * * name :: The property name. * * @output: * aproperty :: The property. * * @return: * FreeType error code. 0~means success. * * @note: * This function works with BDF _and_ PCF fonts. It returns an error * otherwise. It also returns an error if the property is not in the * font. * * A `property' is a either key-value pair within the STARTPROPERTIES * ... ENDPROPERTIES block of a BDF font or a key-value pair from the * `info->props' array within a `FontRec' structure of a PCF font. * * Integer properties are always stored as `signed' within PCF fonts; * consequently, @BDF_PROPERTY_TYPE_CARDINAL is a possible return value * for BDF fonts only. * * In case of error, `aproperty->type' is always set to * @BDF_PROPERTY_TYPE_NONE. */ FT_EXPORT( FT_Error ) FT_Get_BDF_Property( FT_Face face, const char* prop_name, BDF_PropertyRec *aproperty ); /* */ FT_END_HEADER #endif /* FTBDF_H_ */ /* END */