bd5ae40006
C++ programs easier: Renamed FT_WordXX to FT_UIntXX. Changed a lot of void* to FT_Byte* if related to i/o streams -- FreeType always accesses streams byte-wise, so this makes sense IMHO. Added a lot of #ifdef __cplusplus to header files (and removed a few). Other minor syntax fixes (mostly casts). Replaced the variable `private' with `private_dict' -- `private' is reserved in C++.
243 lines
9.7 KiB
C
243 lines
9.7 KiB
C
/***************************************************************************/
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/* */
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/* t2objs.c */
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/* */
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/* OpenType objects manager (body). */
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/* */
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/* Copyright 1996-2000 by */
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/* David Turner, Robert Wilhelm, and Werner Lemberg. */
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/* */
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/* This file is part of the FreeType project, and may only be used, */
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/* modified, and distributed under the terms of the FreeType project */
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/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
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/* this file you indicate that you have read the license and */
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/* understand and accept it fully. */
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/* */
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/***************************************************************************/
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#include <freetype/internal/ftdebug.h>
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#include <freetype/internal/ftcalc.h>
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#include <freetype/internal/ftstream.h>
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#include <freetype/ttnameid.h>
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#include <freetype/tttags.h>
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#include <freetype/internal/sfnt.h>
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#include <freetype/internal/psnames.h>
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#include <t2objs.h>
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#include <t2load.h>
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#include <freetype/internal/t2errors.h>
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/*************************************************************************/
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/* */
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/* The macro FT_COMPONENT is used in trace mode. It is an implicit */
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/* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
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/* messages during execution. */
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/* */
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#undef FT_COMPONENT
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#define FT_COMPONENT trace_t2objs
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/*************************************************************************/
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/* */
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/* FACE FUNCTIONS */
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/* */
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/*************************************************************************/
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/*************************************************************************/
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/* */
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/* <Function> */
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/* T2_Init_Face */
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/* */
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/* <Description> */
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/* Initializes a given OpenType face object. */
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/* */
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/* <Input> */
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/* stream :: The source font stream. */
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/* */
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/* face_index :: The index of the font face in the resource. */
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/* */
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/* num_params :: Number of additional generic parameters. Ignored. */
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/* */
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/* params :: Additional generic parameters. Ignored. */
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/* */
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/* <InOut> */
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/* face :: The newly built face object. */
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/* */
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/* <Return> */
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/* FreeType error code. 0 means success. */
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/* */
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LOCAL_DEF
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FT_Error T2_Init_Face( FT_Stream stream,
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T2_Face face,
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FT_Int face_index,
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FT_Int num_params,
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FT_Parameter* params )
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{
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FT_Error error;
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SFNT_Interface* sfnt;
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sfnt = (SFNT_Interface*)FT_Get_Module_Interface(
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face->root.driver->root.library, "sfnt" );
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if ( !sfnt )
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goto Bad_Format;
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/* create input stream from resource */
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if ( FILE_Seek( 0 ) )
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goto Exit;
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/* check that we have a valid OpenType file */
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error = sfnt->init_face( stream, face, face_index, num_params, params );
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if ( error )
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goto Exit;
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if ( face->format_tag != 0x4F54544FL ) /* `OTTO'; OpenType/CFF font */
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{
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FT_TRACE2(( "[not a valid OpenType/CFF font]\n" ));
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goto Bad_Format;
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}
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/* If we are performing a simple font format check, exit immediately */
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if ( face_index < 0 )
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return T2_Err_Ok;
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/* Load font directory */
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error = sfnt->load_face( stream, face, face_index, num_params, params );
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if ( error )
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goto Exit;
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/* now, load the CFF part of the file */
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error = face->goto_table( face, TTAG_CFF, stream, 0 );
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if ( error )
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goto Exit;
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{
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CFF_Font* cff;
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FT_Memory memory = face->root.memory;
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FT_Face root;
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if ( ALLOC( cff, sizeof ( *cff ) ) )
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goto Exit;
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face->extra.data = cff;
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error = T2_Load_CFF_Font( stream, face_index, cff );
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if ( error )
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goto Exit;
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/* Complement the root flags with some interesting information. */
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/* Note that for OpenType/CFF, there is no need to do this, but */
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/* this will be necessary for pure CFF fonts through. */
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root = &face->root;
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}
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Exit:
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return error;
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Bad_Format:
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error = FT_Err_Unknown_File_Format;
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goto Exit;
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}
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/*************************************************************************/
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/* */
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/* <Function> */
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/* T2_Done_Face */
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/* */
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/* <Description> */
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/* Finalizes a given face object. */
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/* */
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/* <Input> */
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/* face :: A pointer to the face object to destroy. */
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/* */
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LOCAL_DEF
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void T2_Done_Face( T2_Face face )
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{
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FT_Memory memory = face->root.memory;
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SFNT_Interface* sfnt = (SFNT_Interface*)face->sfnt;
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if ( sfnt )
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sfnt->done_face( face );
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{
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CFF_Font* cff = (CFF_Font*)face->extra.data;
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if ( cff )
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{
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T2_Done_CFF_Font( cff );
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FREE( face->extra.data );
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}
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}
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}
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/*************************************************************************/
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/* */
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/* <Function> */
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/* T2_Init_Driver */
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/* */
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/* <Description> */
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/* Initializes a given OpenType driver object. */
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/* */
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/* <Input> */
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/* driver :: A handle to the target driver object. */
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/* */
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/* <Return> */
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/* FreeType error code. 0 means success. */
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/* */
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LOCAL_FUNC
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FT_Error T2_Init_Driver( T2_Driver driver )
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{
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/* init extension registry if needed */
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#ifdef TT_CONFIG_OPTION_EXTEND_ENGINE
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return TT_Init_Extensions( driver );
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#else
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FT_UNUSED( driver );
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return T2_Err_Ok;
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#endif
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}
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/*************************************************************************/
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/* */
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/* <Function> */
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/* T2_Done_Driver */
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/* */
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/* <Description> */
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/* Finalizes a given OpenType driver. */
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/* */
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/* <Input> */
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/* driver :: A handle to the target OpenType driver. */
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/* */
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LOCAL_FUNC
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void T2_Done_Driver( T2_Driver driver )
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{
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/* destroy extensions registry if needed */
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#ifdef TT_CONFIG_OPTION_EXTEND_ENGINE
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TT_Done_Extensions( driver );
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#else
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FT_UNUSED( driver );
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#endif
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}
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/* END */
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