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

/***************************************************************************/ /* */ /* ftserv.h */ /* */ /* The FreeType services (specification only). */ /* */ /* Copyright 2003, 2004, 2005 by */ /* David Turner, Robert Wilhelm, and Werner Lemberg. */ /* */ /* This file is part of the FreeType project, and may only be used, */ /* modified, and distributed under the terms of the FreeType project */ /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ /* this file you indicate that you have read the license and */ /* understand and accept it fully. */ /* */ /***************************************************************************/ /*************************************************************************/ /* */ /* Each module can export one or more `services'. Each service is */ /* identified by a constant string and modeled by a pointer; the latter */ /* generally corresponds to a structure containing function pointers. */ /* */ /* Note that a service's data cannot be a mere function pointer because */ /* in C it is possible that function pointers might be implemented */ /* differently than data pointers (e.g. 48 bits instead of 32). */ /* */ /*************************************************************************/ #ifndef __FTSERV_H__ #define __FTSERV_H__ FT_BEGIN_HEADER #if defined( _MSC_VER ) /* Visual C++ (and Intel C++) */ /* we disable the warning `conditional expression is constant' here */ /* in order to compile cleanly with the maximum level of warnings */ #pragma warning( disable : 4127 ) #endif /* _MSC_VER */ /* * @macro: * FT_FACE_FIND_SERVICE * * @description: * This macro is used to look up a service from a face's driver module. * * @input: * face :: * The source face handle. * * id :: * A string describing the service as defined in the service's * header files (e.g. FT_SERVICE_ID_MULTI_MASTERS which expands to * `multi-masters'). It is automatically prefixed with * `FT_SERVICE_ID_'. * * @output: * ptr :: * A variable that receives the service pointer. Will be NULL * if not found. */ #ifdef __cplusplus #define FT_FACE_FIND_SERVICE( face, ptr, id ) \ FT_BEGIN_STMNT \ FT_Module module = FT_MODULE( FT_FACE( face )->driver ); \ FT_Pointer _tmp_ = NULL; \ FT_Pointer* _pptr_ = (FT_Pointer*)&(ptr); \ \ \ if ( module->clazz->get_interface ) \ _tmp_ = module->clazz->get_interface( module, FT_SERVICE_ID_ ## id ); \ *_pptr_ = _tmp_; \ FT_END_STMNT #else /* !C++ */ #define FT_FACE_FIND_SERVICE( face, ptr, id ) \ FT_BEGIN_STMNT \ FT_Module module = FT_MODULE( FT_FACE( face )->driver ); \ FT_Pointer _tmp_ = NULL; \ \ if ( module->clazz->get_interface ) \ _tmp_ = module->clazz->get_interface( module, FT_SERVICE_ID_ ## id ); \ ptr = _tmp_; \ FT_END_STMNT #endif /* !C++ */ /* * @macro: * FT_FACE_FIND_GLOBAL_SERVICE * * @description: * This macro is used to look up a service from all modules. * * @input: * face :: * The source face handle. * * id :: * A string describing the service as defined in the service's * header files (e.g. FT_SERVICE_ID_MULTI_MASTERS which expands to * `multi-masters'). It is automatically prefixed with * `FT_SERVICE_ID_'. * * @output: * ptr :: * A variable that receives the service pointer. Will be NULL * if not found. */ #ifdef __cplusplus #define FT_FACE_FIND_GLOBAL_SERVICE( face, ptr, id ) \ FT_BEGIN_STMNT \ FT_Module module = FT_MODULE( FT_FACE( face )->driver ); \ FT_Pointer _tmp_; \ FT_Pointer* _pptr_ = (FT_Pointer*)&(ptr); \ \ \ _tmp_ = ft_module_get_service( module, FT_SERVICE_ID_ ## id ); \ *_pptr_ = _tmp_; \ FT_END_STMNT #else /* !C++ */ #define FT_FACE_FIND_GLOBAL_SERVICE( face, ptr, id ) \ FT_BEGIN_STMNT \ FT_Module module = FT_MODULE( FT_FACE( face )->driver ); \ FT_Pointer _tmp_; \ \ \ _tmp_ = ft_module_get_service( module, FT_SERVICE_ID_ ## id ); \ ptr = _tmp_; \ FT_END_STMNT #endif /* !C++ */ /*************************************************************************/ /*************************************************************************/ /***** *****/ /***** S E R V I C E D E S C R I P T O R S *****/ /***** *****/ /*************************************************************************/ /*************************************************************************/ /* * The following structure is used to _describe_ a given service * to the library. This is useful to build simple static service lists. */ typedef struct FT_ServiceDescRec_ { const char* serv_id; /* service name */ const void* serv_data; /* service pointer/data */ } FT_ServiceDescRec; typedef const FT_ServiceDescRec* FT_ServiceDesc; /* * Parse a list of FT_ServiceDescRec descriptors and look for * a specific service by ID. Note that the last element in the * array must be { NULL, NULL }, and that the function should * return NULL if the service isn't available. * * This function can be used by modules to implement their * `get_service' method. */ FT_BASE( FT_Pointer ) ft_service_list_lookup( FT_ServiceDesc service_descriptors, const char* service_id ); /*************************************************************************/ /*************************************************************************/ /***** *****/ /***** S E R V I C E S C A C H E *****/ /***** *****/ /*************************************************************************/ /*************************************************************************/ /* * This structure is used to store a cache for several frequently used * services. It is the type of `face->internal->services'. You * should only use FT_FACE_LOOKUP_SERVICE to access it. * * All fields should have the type FT_Pointer to relax compilation * dependencies. We assume the developer isn't completely stupid. * * Each field must be named `service_XXXX' where `XXX' corresponds to * the correct FT_SERVICE_ID_XXXX macro. See the definition of * FT_FACE_LOOKUP_SERVICE below how this is implemented. * */ typedef struct FT_ServiceCacheRec_ { FT_Pointer service_POSTSCRIPT_FONT_NAME; FT_Pointer service_MULTI_MASTERS; FT_Pointer service_GLYPH_DICT; FT_Pointer service_PFR_METRICS; FT_Pointer service_WINFNT; } FT_ServiceCacheRec, *FT_ServiceCache; /* * A magic number used within the services cache. */ #define FT_SERVICE_UNAVAILABLE ((FT_Pointer)-2) /* magic number */ /* * @macro: * FT_FACE_LOOKUP_SERVICE * * @description: * This macro is used to lookup a service from a face's driver module * using its cache. * * @input: * face:: * The source face handle containing the cache. * * field :: * The field name in the cache. * * id :: * The service ID. * * @output: * ptr :: * A variable receiving the service data. NULL if not available. */ #ifdef __cplusplus #define FT_FACE_LOOKUP_SERVICE( face, ptr, id ) \ FT_BEGIN_STMNT \ FT_Pointer svc; \ FT_Pointer* Pptr = (FT_Pointer*)&(ptr); \ \ \ svc = FT_FACE( face )->internal->services. service_ ## id; \ if ( svc == FT_SERVICE_UNAVAILABLE ) \ svc = NULL; \ else if ( svc == NULL ) \ { \ FT_FACE_FIND_SERVICE( face, svc, id ); \ \ FT_FACE( face )->internal->services. service_ ## id = \ (FT_Pointer)( svc != NULL ? svc \ : FT_SERVICE_UNAVAILABLE ); \ } \ *Pptr = svc; \ FT_END_STMNT #else /* !C++ */ #define FT_FACE_LOOKUP_SERVICE( face, ptr, id ) \ FT_BEGIN_STMNT \ FT_Pointer svc; \ \ \ svc = FT_FACE( face )->internal->services. service_ ## id; \ if ( svc == FT_SERVICE_UNAVAILABLE ) \ svc = NULL; \ else if ( svc == NULL ) \ { \ FT_FACE_FIND_SERVICE( face, svc, id ); \ \ FT_FACE( face )->internal->services. service_ ## id = \ (FT_Pointer)( svc != NULL ? svc \ : FT_SERVICE_UNAVAILABLE ); \ } \ ptr = svc; \ FT_END_STMNT #endif /* !C++ */ /* * A macro used to define new service structure types. */ #define FT_DEFINE_SERVICE( name ) \ typedef struct FT_Service_ ## name ## Rec_ \ FT_Service_ ## name ## Rec ; \ typedef struct FT_Service_ ## name ## Rec_ \ const * FT_Service_ ## name ; \ struct FT_Service_ ## name ## Rec_ /* */ /* * The header files containing the services. */ #define FT_SERVICE_BDF_H <freetype/internal/services/svbdf.h> #define FT_SERVICE_GLYPH_DICT_H <freetype/internal/services/svgldict.h> #define FT_SERVICE_MULTIPLE_MASTERS_H <freetype/internal/services/svmm.h> #define FT_SERVICE_OPENTYPE_VALIDATE_H <freetype/internal/services/svotval.h> #define FT_SERVICE_PFR_H <freetype/internal/services/svpfr.h> #define FT_SERVICE_POSTSCRIPT_CMAPS_H <freetype/internal/services/svpscmap.h> #define FT_SERVICE_POSTSCRIPT_INFO_H <freetype/internal/services/svpsinfo.h> #define FT_SERVICE_POSTSCRIPT_NAME_H <freetype/internal/services/svpostnm.h> #define FT_SERVICE_SFNT_H <freetype/internal/services/svsfnt.h> #define FT_SERVICE_TT_CMAP_H <freetype/internal/services/svttcmap.h> #define FT_SERVICE_WINFNT_H <freetype/internal/services/svwinfnt.h> #define FT_SERVICE_XFREE86_NAME_H <freetype/internal/services/svxf86nm.h> /* */ FT_END_HEADER #endif /* __FTSERV_H__ */ /* END */