ref: e608a3e0d2a49c157e4b7af6d8d5d45601ef87ae
dir: /src/base/ftinit.c/
/***************************************************************************/ /* */ /* ftinit.c */ /* */ /* FreeType initialisation layer (body). */ /* */ /* Copyright 1996-2000 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. */ /* */ /***************************************************************************/ /*************************************************************************/ /* */ /* The purpose of this file is to implement the three following */ /* functions: */ /* */ /* FT_Default_Drivers: */ /* This function is used to add the set of default drivers to a */ /* fresh new library object. The set is computed at compile time */ /* from the Makefiles inclusions in Makefile.lib. See the document */ /* `FreeType Internals' for more info. */ /* */ /* FT_Init_FreeType: */ /* This function creates a system object for the current platform, */ /* builds a library out of it, then calls FT_Default_Drivers(). */ /* */ /* FT_Done_FreeType: */ /* This function simply finalizes the library and the corresponding */ /* system object. */ /* */ /* Note that even if FT_Init_FreeType() uses the implementation of the */ /* system object defined at build time, client applications are still */ /* able to provide their own `ftsystem.c'. */ /* */ /*************************************************************************/ #include <ftobjs.h> #include <ftconfig.h> #include <ftdebug.h> #include <ftdriver.h> #undef FT_COMPONENT #define FT_COMPONENT trace_init #undef FT_DRIVER #define FT_DRIVER( x ) extern FT_DriverInterface x; #include <ftmodule.h> #undef FT_DRIVER #define FT_DRIVER( x ) &x, static const FT_DriverInterface* ft_default_drivers[] = { #include <ftmodule.h> 0 }; /*************************************************************************/ /* */ /* <Function> */ /* FT_Default_Drivers */ /* */ /* <Description> */ /* Adds the set of default drivers to a given library object. */ /* */ /* <InOut> */ /* library :: A handle to a new library object. */ /* */ EXPORT_FUNC void FT_Default_Drivers( FT_Library library ) { FT_Error error; const FT_DriverInterface* *cur; cur = ft_default_drivers; while ( *cur ) { error = FT_Add_Driver( library, *cur ); /* notify errors, but don't stop */ if ( error ) FT_ERROR(( "FT.Default_Drivers: Cannot install `%s', error = %x\n", (*cur)->driver_name, error )); cur++; } } /*************************************************************************/ /* */ /* <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> */ /* library :: A handle to a new library object. */ /* */ /* <Return> */ /* FreeTyoe error code. 0 means success. */ /* */ EXPORT_FUNC FT_Error FT_Init_FreeType( FT_Library* library ) { FT_Error error; FT_Memory memory; /* First of all, allocate a new system object - -this function is part */ /* of the system-specific component, i.e. `ftsystem.c'. */ memory = FT_New_Memory(); if ( !memory ) { FT_ERROR(( "FT_Init_FreeType:" )); FT_ERROR(( " cannot find memory manager" )); return FT_Err_Unimplemented_Feature; } /* builds a library out of it, then fill it with the set of */ /* default drivers. */ error = FT_New_Library( memory, library ); if ( !error ) FT_Default_Drivers( *library ); return error; } /* END */