forked from minhngoc25a/freetype2
4960 lines
135 KiB
C
4960 lines
135 KiB
C
/***************************************************************************/
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/* */
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/* ftobjs.c */
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/* */
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/* The FreeType private base classes (body). */
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/* */
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/* Copyright 1996-2016 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 <ft2build.h>
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#include FT_LIST_H
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#include FT_OUTLINE_H
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#include FT_INTERNAL_VALIDATE_H
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#include FT_INTERNAL_OBJECTS_H
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#include FT_INTERNAL_DEBUG_H
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#include FT_INTERNAL_RFORK_H
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#include FT_INTERNAL_STREAM_H
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#include FT_INTERNAL_SFNT_H /* for SFNT_Load_Table_Func */
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#include FT_TRUETYPE_TABLES_H
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#include FT_TRUETYPE_TAGS_H
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#include FT_TRUETYPE_IDS_H
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#include FT_SERVICE_PROPERTIES_H
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#include FT_SERVICE_SFNT_H
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#include FT_SERVICE_POSTSCRIPT_NAME_H
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#include FT_SERVICE_GLYPH_DICT_H
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#include FT_SERVICE_TT_CMAP_H
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#include FT_SERVICE_KERNING_H
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#include FT_SERVICE_TRUETYPE_ENGINE_H
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#ifdef FT_CONFIG_OPTION_MAC_FONTS
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#include "ftbase.h"
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#endif
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#ifdef FT_DEBUG_LEVEL_TRACE
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#include FT_BITMAP_H
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#if defined( _MSC_VER ) /* Visual C++ (and Intel C++) */
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/* We disable the warning `conversion from XXX to YYY, */
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/* possible loss of data' in order to compile cleanly with */
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/* the maximum level of warnings: `md5.c' is non-FreeType */
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/* code, and it gets used during development builds only. */
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#pragma warning( push )
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#pragma warning( disable : 4244 )
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#endif /* _MSC_VER */
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/* It's easiest to include `md5.c' directly. However, since OpenSSL */
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/* also provides the same functions, there might be conflicts if */
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/* both FreeType and OpenSSL are built as static libraries. For */
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/* this reason, we put the MD5 stuff into the `FT_' namespace. */
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#define MD5_u32plus FT_MD5_u32plus
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#define MD5_CTX FT_MD5_CTX
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#define MD5_Init FT_MD5_Init
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#define MD5_Update FT_MD5_Update
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#define MD5_Final FT_MD5_Final
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#undef HAVE_OPENSSL
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#include "md5.c"
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#if defined( _MSC_VER )
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#pragma warning( pop )
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#endif
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#endif /* FT_DEBUG_LEVEL_TRACE */
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#define GRID_FIT_METRICS
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FT_BASE_DEF( FT_Pointer )
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ft_service_list_lookup( FT_ServiceDesc service_descriptors,
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const char* service_id )
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{
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FT_Pointer result = NULL;
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FT_ServiceDesc desc = service_descriptors;
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if ( desc && service_id )
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{
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for ( ; desc->serv_id != NULL; desc++ )
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{
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if ( ft_strcmp( desc->serv_id, service_id ) == 0 )
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{
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result = (FT_Pointer)desc->serv_data;
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break;
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}
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}
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}
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return result;
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}
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FT_BASE_DEF( void )
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ft_validator_init( FT_Validator valid,
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const FT_Byte* base,
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const FT_Byte* limit,
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FT_ValidationLevel level )
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{
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valid->base = base;
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valid->limit = limit;
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valid->level = level;
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valid->error = FT_Err_Ok;
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}
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FT_BASE_DEF( FT_Int )
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ft_validator_run( FT_Validator valid )
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{
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/* This function doesn't work! None should call it. */
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FT_UNUSED( valid );
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return -1;
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}
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FT_BASE_DEF( void )
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ft_validator_error( FT_Validator valid,
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FT_Error error )
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{
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/* since the cast below also disables the compiler's */
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/* type check, we introduce a dummy variable, which */
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/* will be optimized away */
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volatile ft_jmp_buf* jump_buffer = &valid->jump_buffer;
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valid->error = error;
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/* throw away volatileness; use `jump_buffer' or the */
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/* compiler may warn about an unused local variable */
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ft_longjmp( *(ft_jmp_buf*) jump_buffer, 1 );
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}
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/*************************************************************************/
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/*************************************************************************/
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/*************************************************************************/
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/**** ****/
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/**** ****/
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/**** S T R E A M ****/
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/**** ****/
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/**** ****/
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/*************************************************************************/
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/*************************************************************************/
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/*************************************************************************/
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/* create a new input stream from an FT_Open_Args structure */
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/* */
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FT_BASE_DEF( FT_Error )
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FT_Stream_New( FT_Library library,
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const FT_Open_Args* args,
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FT_Stream *astream )
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{
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FT_Error error;
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FT_Memory memory;
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FT_Stream stream = NULL;
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*astream = NULL;
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if ( !library )
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return FT_THROW( Invalid_Library_Handle );
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if ( !args )
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return FT_THROW( Invalid_Argument );
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memory = library->memory;
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if ( FT_NEW( stream ) )
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goto Exit;
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stream->memory = memory;
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if ( args->flags & FT_OPEN_MEMORY )
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{
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/* create a memory-based stream */
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FT_Stream_OpenMemory( stream,
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(const FT_Byte*)args->memory_base,
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(FT_ULong)args->memory_size );
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}
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#ifndef FT_CONFIG_OPTION_DISABLE_STREAM_SUPPORT
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else if ( args->flags & FT_OPEN_PATHNAME )
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{
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/* create a normal system stream */
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error = FT_Stream_Open( stream, args->pathname );
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stream->pathname.pointer = args->pathname;
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}
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else if ( ( args->flags & FT_OPEN_STREAM ) && args->stream )
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{
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/* use an existing, user-provided stream */
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/* in this case, we do not need to allocate a new stream object */
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/* since the caller is responsible for closing it himself */
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FT_FREE( stream );
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stream = args->stream;
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}
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#endif
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else
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error = FT_THROW( Invalid_Argument );
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if ( error )
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FT_FREE( stream );
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else
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stream->memory = memory; /* just to be certain */
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*astream = stream;
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Exit:
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return error;
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}
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FT_BASE_DEF( void )
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FT_Stream_Free( FT_Stream stream,
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FT_Int external )
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{
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if ( stream )
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{
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FT_Memory memory = stream->memory;
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FT_Stream_Close( stream );
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if ( !external )
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FT_FREE( stream );
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}
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}
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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_objs
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/*************************************************************************/
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/*************************************************************************/
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/*************************************************************************/
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/**** ****/
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/**** ****/
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/**** FACE, SIZE & GLYPH SLOT OBJECTS ****/
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/**** ****/
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/**** ****/
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/*************************************************************************/
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/*************************************************************************/
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/*************************************************************************/
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static FT_Error
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ft_glyphslot_init( FT_GlyphSlot slot )
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{
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FT_Driver driver = slot->face->driver;
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FT_Driver_Class clazz = driver->clazz;
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FT_Memory memory = driver->root.memory;
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FT_Error error = FT_Err_Ok;
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FT_Slot_Internal internal = NULL;
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slot->library = driver->root.library;
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if ( FT_NEW( internal ) )
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goto Exit;
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slot->internal = internal;
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if ( FT_DRIVER_USES_OUTLINES( driver ) )
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error = FT_GlyphLoader_New( memory, &internal->loader );
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if ( !error && clazz->init_slot )
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error = clazz->init_slot( slot );
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Exit:
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return error;
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}
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FT_BASE_DEF( void )
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ft_glyphslot_free_bitmap( FT_GlyphSlot slot )
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{
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if ( slot->internal && ( slot->internal->flags & FT_GLYPH_OWN_BITMAP ) )
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{
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FT_Memory memory = FT_FACE_MEMORY( slot->face );
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FT_FREE( slot->bitmap.buffer );
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slot->internal->flags &= ~FT_GLYPH_OWN_BITMAP;
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}
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else
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{
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/* assume that the bitmap buffer was stolen or not */
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/* allocated from the heap */
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slot->bitmap.buffer = NULL;
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}
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}
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FT_BASE_DEF( void )
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ft_glyphslot_set_bitmap( FT_GlyphSlot slot,
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FT_Byte* buffer )
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{
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ft_glyphslot_free_bitmap( slot );
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slot->bitmap.buffer = buffer;
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FT_ASSERT( (slot->internal->flags & FT_GLYPH_OWN_BITMAP) == 0 );
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}
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FT_BASE_DEF( FT_Error )
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ft_glyphslot_alloc_bitmap( FT_GlyphSlot slot,
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FT_ULong size )
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{
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FT_Memory memory = FT_FACE_MEMORY( slot->face );
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FT_Error error;
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if ( slot->internal->flags & FT_GLYPH_OWN_BITMAP )
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FT_FREE( slot->bitmap.buffer );
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else
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slot->internal->flags |= FT_GLYPH_OWN_BITMAP;
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(void)FT_ALLOC( slot->bitmap.buffer, size );
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return error;
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}
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static void
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ft_glyphslot_clear( FT_GlyphSlot slot )
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{
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/* free bitmap if needed */
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ft_glyphslot_free_bitmap( slot );
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/* clear all public fields in the glyph slot */
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FT_ZERO( &slot->metrics );
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FT_ZERO( &slot->outline );
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slot->bitmap.width = 0;
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slot->bitmap.rows = 0;
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slot->bitmap.pitch = 0;
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slot->bitmap.pixel_mode = 0;
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/* `slot->bitmap.buffer' has been handled by ft_glyphslot_free_bitmap */
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slot->bitmap_left = 0;
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slot->bitmap_top = 0;
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slot->num_subglyphs = 0;
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slot->subglyphs = NULL;
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slot->control_data = NULL;
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slot->control_len = 0;
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slot->other = NULL;
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slot->format = FT_GLYPH_FORMAT_NONE;
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slot->linearHoriAdvance = 0;
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slot->linearVertAdvance = 0;
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slot->lsb_delta = 0;
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slot->rsb_delta = 0;
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}
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static void
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ft_glyphslot_done( FT_GlyphSlot slot )
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{
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FT_Driver driver = slot->face->driver;
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FT_Driver_Class clazz = driver->clazz;
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FT_Memory memory = driver->root.memory;
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if ( clazz->done_slot )
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clazz->done_slot( slot );
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/* free bitmap buffer if needed */
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ft_glyphslot_free_bitmap( slot );
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/* slot->internal might be NULL in out-of-memory situations */
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if ( slot->internal )
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{
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/* free glyph loader */
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if ( FT_DRIVER_USES_OUTLINES( driver ) )
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{
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FT_GlyphLoader_Done( slot->internal->loader );
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slot->internal->loader = NULL;
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}
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FT_FREE( slot->internal );
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}
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}
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/* documentation is in ftobjs.h */
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FT_BASE_DEF( FT_Error )
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FT_New_GlyphSlot( FT_Face face,
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FT_GlyphSlot *aslot )
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{
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FT_Error error;
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FT_Driver driver;
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FT_Driver_Class clazz;
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FT_Memory memory;
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FT_GlyphSlot slot = NULL;
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if ( !face )
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return FT_THROW( Invalid_Face_Handle );
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if ( !face->driver )
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return FT_THROW( Invalid_Argument );
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driver = face->driver;
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clazz = driver->clazz;
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memory = driver->root.memory;
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FT_TRACE4(( "FT_New_GlyphSlot: Creating new slot object\n" ));
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if ( !FT_ALLOC( slot, clazz->slot_object_size ) )
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{
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slot->face = face;
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error = ft_glyphslot_init( slot );
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if ( error )
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{
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ft_glyphslot_done( slot );
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FT_FREE( slot );
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goto Exit;
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}
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slot->next = face->glyph;
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face->glyph = slot;
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if ( aslot )
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*aslot = slot;
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}
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else if ( aslot )
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*aslot = NULL;
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Exit:
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FT_TRACE4(( "FT_New_GlyphSlot: Return %d\n", error ));
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return error;
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}
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/* documentation is in ftobjs.h */
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FT_BASE_DEF( void )
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FT_Done_GlyphSlot( FT_GlyphSlot slot )
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{
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if ( slot )
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{
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FT_Driver driver = slot->face->driver;
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FT_Memory memory = driver->root.memory;
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FT_GlyphSlot prev;
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FT_GlyphSlot cur;
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/* Remove slot from its parent face's list */
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prev = NULL;
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cur = slot->face->glyph;
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while ( cur )
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{
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if ( cur == slot )
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{
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if ( !prev )
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slot->face->glyph = cur->next;
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else
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prev->next = cur->next;
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/* finalize client-specific data */
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if ( slot->generic.finalizer )
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slot->generic.finalizer( slot );
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ft_glyphslot_done( slot );
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FT_FREE( slot );
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break;
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}
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prev = cur;
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cur = cur->next;
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}
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}
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}
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/* documentation is in freetype.h */
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FT_EXPORT_DEF( void )
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FT_Set_Transform( FT_Face face,
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FT_Matrix* matrix,
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FT_Vector* delta )
|
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{
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FT_Face_Internal internal;
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|
|
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if ( !face )
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return;
|
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internal = face->internal;
|
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|
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internal->transform_flags = 0;
|
|
|
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if ( !matrix )
|
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{
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internal->transform_matrix.xx = 0x10000L;
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internal->transform_matrix.xy = 0;
|
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internal->transform_matrix.yx = 0;
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internal->transform_matrix.yy = 0x10000L;
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|
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matrix = &internal->transform_matrix;
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}
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else
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internal->transform_matrix = *matrix;
|
|
|
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/* set transform_flags bit flag 0 if `matrix' isn't the identity */
|
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if ( ( matrix->xy | matrix->yx ) ||
|
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matrix->xx != 0x10000L ||
|
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matrix->yy != 0x10000L )
|
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internal->transform_flags |= 1;
|
|
|
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if ( !delta )
|
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{
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internal->transform_delta.x = 0;
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internal->transform_delta.y = 0;
|
|
|
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delta = &internal->transform_delta;
|
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}
|
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else
|
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internal->transform_delta = *delta;
|
|
|
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/* set transform_flags bit flag 1 if `delta' isn't the null vector */
|
|
if ( delta->x | delta->y )
|
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internal->transform_flags |= 2;
|
|
}
|
|
|
|
|
|
static FT_Renderer
|
|
ft_lookup_glyph_renderer( FT_GlyphSlot slot );
|
|
|
|
|
|
#ifdef GRID_FIT_METRICS
|
|
static void
|
|
ft_glyphslot_grid_fit_metrics( FT_GlyphSlot slot,
|
|
FT_Bool vertical )
|
|
{
|
|
FT_Glyph_Metrics* metrics = &slot->metrics;
|
|
FT_Pos right, bottom;
|
|
|
|
|
|
if ( vertical )
|
|
{
|
|
metrics->horiBearingX = FT_PIX_FLOOR( metrics->horiBearingX );
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metrics->horiBearingY = FT_PIX_CEIL ( metrics->horiBearingY );
|
|
|
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right = FT_PIX_CEIL( metrics->vertBearingX + metrics->width );
|
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bottom = FT_PIX_CEIL( metrics->vertBearingY + metrics->height );
|
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|
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metrics->vertBearingX = FT_PIX_FLOOR( metrics->vertBearingX );
|
|
metrics->vertBearingY = FT_PIX_FLOOR( metrics->vertBearingY );
|
|
|
|
metrics->width = right - metrics->vertBearingX;
|
|
metrics->height = bottom - metrics->vertBearingY;
|
|
}
|
|
else
|
|
{
|
|
metrics->vertBearingX = FT_PIX_FLOOR( metrics->vertBearingX );
|
|
metrics->vertBearingY = FT_PIX_FLOOR( metrics->vertBearingY );
|
|
|
|
right = FT_PIX_CEIL ( metrics->horiBearingX + metrics->width );
|
|
bottom = FT_PIX_FLOOR( metrics->horiBearingY - metrics->height );
|
|
|
|
metrics->horiBearingX = FT_PIX_FLOOR( metrics->horiBearingX );
|
|
metrics->horiBearingY = FT_PIX_CEIL ( metrics->horiBearingY );
|
|
|
|
metrics->width = right - metrics->horiBearingX;
|
|
metrics->height = metrics->horiBearingY - bottom;
|
|
}
|
|
|
|
metrics->horiAdvance = FT_PIX_ROUND( metrics->horiAdvance );
|
|
metrics->vertAdvance = FT_PIX_ROUND( metrics->vertAdvance );
|
|
}
|
|
#endif /* GRID_FIT_METRICS */
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Load_Glyph( FT_Face face,
|
|
FT_UInt glyph_index,
|
|
FT_Int32 load_flags )
|
|
{
|
|
FT_Error error;
|
|
FT_Driver driver;
|
|
FT_GlyphSlot slot;
|
|
FT_Library library;
|
|
FT_Bool autohint = FALSE;
|
|
FT_Module hinter;
|
|
TT_Face ttface = (TT_Face)face;
|
|
|
|
|
|
if ( !face || !face->size || !face->glyph )
|
|
return FT_THROW( Invalid_Face_Handle );
|
|
|
|
/* The validity test for `glyph_index' is performed by the */
|
|
/* font drivers. */
|
|
|
|
slot = face->glyph;
|
|
ft_glyphslot_clear( slot );
|
|
|
|
driver = face->driver;
|
|
library = driver->root.library;
|
|
hinter = library->auto_hinter;
|
|
|
|
/* resolve load flags dependencies */
|
|
|
|
if ( load_flags & FT_LOAD_NO_RECURSE )
|
|
load_flags |= FT_LOAD_NO_SCALE |
|
|
FT_LOAD_IGNORE_TRANSFORM;
|
|
|
|
if ( load_flags & FT_LOAD_NO_SCALE )
|
|
{
|
|
load_flags |= FT_LOAD_NO_HINTING |
|
|
FT_LOAD_NO_BITMAP;
|
|
|
|
load_flags &= ~FT_LOAD_RENDER;
|
|
}
|
|
|
|
/*
|
|
* Determine whether we need to auto-hint or not.
|
|
* The general rules are:
|
|
*
|
|
* - Do only auto-hinting if we have a hinter module, a scalable font
|
|
* format dealing with outlines, and no transforms except simple
|
|
* slants and/or rotations by integer multiples of 90 degrees.
|
|
*
|
|
* - Then, auto-hint if FT_LOAD_FORCE_AUTOHINT is set or if we don't
|
|
* have a native font hinter.
|
|
*
|
|
* - Otherwise, auto-hint for LIGHT hinting mode or if there isn't
|
|
* any hinting bytecode in the TrueType/OpenType font.
|
|
*
|
|
* - Exception: The font is `tricky' and requires the native hinter to
|
|
* load properly.
|
|
*/
|
|
|
|
if ( hinter &&
|
|
!( load_flags & FT_LOAD_NO_HINTING ) &&
|
|
!( load_flags & FT_LOAD_NO_AUTOHINT ) &&
|
|
FT_DRIVER_IS_SCALABLE( driver ) &&
|
|
FT_DRIVER_USES_OUTLINES( driver ) &&
|
|
!FT_IS_TRICKY( face ) &&
|
|
( ( load_flags & FT_LOAD_IGNORE_TRANSFORM ) ||
|
|
( face->internal->transform_matrix.yx == 0 &&
|
|
face->internal->transform_matrix.xx != 0 ) ||
|
|
( face->internal->transform_matrix.xx == 0 &&
|
|
face->internal->transform_matrix.yx != 0 ) ) )
|
|
{
|
|
if ( ( load_flags & FT_LOAD_FORCE_AUTOHINT ) ||
|
|
!FT_DRIVER_HAS_HINTER( driver ) )
|
|
autohint = TRUE;
|
|
else
|
|
{
|
|
FT_Render_Mode mode = FT_LOAD_TARGET_MODE( load_flags );
|
|
|
|
|
|
/* the check for `num_locations' assures that we actually */
|
|
/* test for instructions in a TTF and not in a CFF-based OTF */
|
|
/* */
|
|
/* since `maxSizeOfInstructions' might be unreliable, we */
|
|
/* check the size of the `fpgm' and `prep' tables, too -- */
|
|
/* the assumption is that there don't exist real TTFs where */
|
|
/* both `fpgm' and `prep' tables are missing */
|
|
if ( ( mode == FT_RENDER_MODE_LIGHT &&
|
|
!FT_DRIVER_HINTS_LIGHTLY( driver ) ) ||
|
|
( FT_IS_SFNT( face ) &&
|
|
ttface->num_locations &&
|
|
ttface->max_profile.maxSizeOfInstructions == 0 &&
|
|
ttface->font_program_size == 0 &&
|
|
ttface->cvt_program_size == 0 ) )
|
|
autohint = TRUE;
|
|
}
|
|
}
|
|
|
|
if ( autohint )
|
|
{
|
|
FT_AutoHinter_Interface hinting;
|
|
|
|
|
|
/* try to load embedded bitmaps first if available */
|
|
/* */
|
|
/* XXX: This is really a temporary hack that should disappear */
|
|
/* promptly with FreeType 2.1! */
|
|
/* */
|
|
if ( FT_HAS_FIXED_SIZES( face ) &&
|
|
( load_flags & FT_LOAD_NO_BITMAP ) == 0 )
|
|
{
|
|
error = driver->clazz->load_glyph( slot, face->size,
|
|
glyph_index,
|
|
load_flags | FT_LOAD_SBITS_ONLY );
|
|
|
|
if ( !error && slot->format == FT_GLYPH_FORMAT_BITMAP )
|
|
goto Load_Ok;
|
|
}
|
|
|
|
{
|
|
FT_Face_Internal internal = face->internal;
|
|
FT_Int transform_flags = internal->transform_flags;
|
|
|
|
|
|
/* since the auto-hinter calls FT_Load_Glyph by itself, */
|
|
/* make sure that glyphs aren't transformed */
|
|
internal->transform_flags = 0;
|
|
|
|
/* load auto-hinted outline */
|
|
hinting = (FT_AutoHinter_Interface)hinter->clazz->module_interface;
|
|
|
|
error = hinting->load_glyph( (FT_AutoHinter)hinter,
|
|
slot, face->size,
|
|
glyph_index, load_flags );
|
|
|
|
internal->transform_flags = transform_flags;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
error = driver->clazz->load_glyph( slot,
|
|
face->size,
|
|
glyph_index,
|
|
load_flags );
|
|
if ( error )
|
|
goto Exit;
|
|
|
|
if ( slot->format == FT_GLYPH_FORMAT_OUTLINE )
|
|
{
|
|
/* check that the loaded outline is correct */
|
|
error = FT_Outline_Check( &slot->outline );
|
|
if ( error )
|
|
goto Exit;
|
|
|
|
#ifdef GRID_FIT_METRICS
|
|
if ( !( load_flags & FT_LOAD_NO_HINTING ) )
|
|
ft_glyphslot_grid_fit_metrics( slot,
|
|
FT_BOOL( load_flags & FT_LOAD_VERTICAL_LAYOUT ) );
|
|
#endif
|
|
}
|
|
}
|
|
|
|
Load_Ok:
|
|
/* compute the advance */
|
|
if ( load_flags & FT_LOAD_VERTICAL_LAYOUT )
|
|
{
|
|
slot->advance.x = 0;
|
|
slot->advance.y = slot->metrics.vertAdvance;
|
|
}
|
|
else
|
|
{
|
|
slot->advance.x = slot->metrics.horiAdvance;
|
|
slot->advance.y = 0;
|
|
}
|
|
|
|
/* compute the linear advance in 16.16 pixels */
|
|
if ( ( load_flags & FT_LOAD_LINEAR_DESIGN ) == 0 &&
|
|
( FT_IS_SCALABLE( face ) ) )
|
|
{
|
|
FT_Size_Metrics* metrics = &face->size->metrics;
|
|
|
|
|
|
/* it's tricky! */
|
|
slot->linearHoriAdvance = FT_MulDiv( slot->linearHoriAdvance,
|
|
metrics->x_scale, 64 );
|
|
|
|
slot->linearVertAdvance = FT_MulDiv( slot->linearVertAdvance,
|
|
metrics->y_scale, 64 );
|
|
}
|
|
|
|
if ( ( load_flags & FT_LOAD_IGNORE_TRANSFORM ) == 0 )
|
|
{
|
|
FT_Face_Internal internal = face->internal;
|
|
|
|
|
|
/* now, transform the glyph image if needed */
|
|
if ( internal->transform_flags )
|
|
{
|
|
/* get renderer */
|
|
FT_Renderer renderer = ft_lookup_glyph_renderer( slot );
|
|
|
|
|
|
if ( renderer )
|
|
error = renderer->clazz->transform_glyph(
|
|
renderer, slot,
|
|
&internal->transform_matrix,
|
|
&internal->transform_delta );
|
|
else if ( slot->format == FT_GLYPH_FORMAT_OUTLINE )
|
|
{
|
|
/* apply `standard' transformation if no renderer is available */
|
|
if ( internal->transform_flags & 1 )
|
|
FT_Outline_Transform( &slot->outline,
|
|
&internal->transform_matrix );
|
|
|
|
if ( internal->transform_flags & 2 )
|
|
FT_Outline_Translate( &slot->outline,
|
|
internal->transform_delta.x,
|
|
internal->transform_delta.y );
|
|
}
|
|
|
|
/* transform advance */
|
|
FT_Vector_Transform( &slot->advance, &internal->transform_matrix );
|
|
}
|
|
}
|
|
|
|
FT_TRACE5(( " x advance: %d\n" , slot->advance.x ));
|
|
FT_TRACE5(( " y advance: %d\n" , slot->advance.y ));
|
|
|
|
FT_TRACE5(( " linear x advance: %d\n" , slot->linearHoriAdvance ));
|
|
FT_TRACE5(( " linear y advance: %d\n" , slot->linearVertAdvance ));
|
|
|
|
/* do we need to render the image now? */
|
|
if ( !error &&
|
|
slot->format != FT_GLYPH_FORMAT_BITMAP &&
|
|
slot->format != FT_GLYPH_FORMAT_COMPOSITE &&
|
|
load_flags & FT_LOAD_RENDER )
|
|
{
|
|
FT_Render_Mode mode = FT_LOAD_TARGET_MODE( load_flags );
|
|
|
|
|
|
if ( mode == FT_RENDER_MODE_NORMAL &&
|
|
(load_flags & FT_LOAD_MONOCHROME ) )
|
|
mode = FT_RENDER_MODE_MONO;
|
|
|
|
error = FT_Render_Glyph( slot, mode );
|
|
}
|
|
|
|
Exit:
|
|
return error;
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Load_Char( FT_Face face,
|
|
FT_ULong char_code,
|
|
FT_Int32 load_flags )
|
|
{
|
|
FT_UInt glyph_index;
|
|
|
|
|
|
if ( !face )
|
|
return FT_THROW( Invalid_Face_Handle );
|
|
|
|
glyph_index = (FT_UInt)char_code;
|
|
if ( face->charmap )
|
|
glyph_index = FT_Get_Char_Index( face, char_code );
|
|
|
|
return FT_Load_Glyph( face, glyph_index, load_flags );
|
|
}
|
|
|
|
|
|
/* destructor for sizes list */
|
|
static void
|
|
destroy_size( FT_Memory memory,
|
|
FT_Size size,
|
|
FT_Driver driver )
|
|
{
|
|
/* finalize client-specific data */
|
|
if ( size->generic.finalizer )
|
|
size->generic.finalizer( size );
|
|
|
|
/* finalize format-specific stuff */
|
|
if ( driver->clazz->done_size )
|
|
driver->clazz->done_size( size );
|
|
|
|
FT_FREE( size->internal );
|
|
FT_FREE( size );
|
|
}
|
|
|
|
|
|
static void
|
|
ft_cmap_done_internal( FT_CMap cmap );
|
|
|
|
|
|
static void
|
|
destroy_charmaps( FT_Face face,
|
|
FT_Memory memory )
|
|
{
|
|
FT_Int n;
|
|
|
|
|
|
if ( !face )
|
|
return;
|
|
|
|
for ( n = 0; n < face->num_charmaps; n++ )
|
|
{
|
|
FT_CMap cmap = FT_CMAP( face->charmaps[n] );
|
|
|
|
|
|
ft_cmap_done_internal( cmap );
|
|
|
|
face->charmaps[n] = NULL;
|
|
}
|
|
|
|
FT_FREE( face->charmaps );
|
|
face->num_charmaps = 0;
|
|
}
|
|
|
|
|
|
/* destructor for faces list */
|
|
static void
|
|
destroy_face( FT_Memory memory,
|
|
FT_Face face,
|
|
FT_Driver driver )
|
|
{
|
|
FT_Driver_Class clazz = driver->clazz;
|
|
|
|
|
|
/* discard auto-hinting data */
|
|
if ( face->autohint.finalizer )
|
|
face->autohint.finalizer( face->autohint.data );
|
|
|
|
/* Discard glyph slots for this face. */
|
|
/* Beware! FT_Done_GlyphSlot() changes the field `face->glyph' */
|
|
while ( face->glyph )
|
|
FT_Done_GlyphSlot( face->glyph );
|
|
|
|
/* discard all sizes for this face */
|
|
FT_List_Finalize( &face->sizes_list,
|
|
(FT_List_Destructor)destroy_size,
|
|
memory,
|
|
driver );
|
|
face->size = NULL;
|
|
|
|
/* now discard client data */
|
|
if ( face->generic.finalizer )
|
|
face->generic.finalizer( face );
|
|
|
|
/* discard charmaps */
|
|
destroy_charmaps( face, memory );
|
|
|
|
/* finalize format-specific stuff */
|
|
if ( clazz->done_face )
|
|
clazz->done_face( face );
|
|
|
|
/* close the stream for this face if needed */
|
|
FT_Stream_Free(
|
|
face->stream,
|
|
( face->face_flags & FT_FACE_FLAG_EXTERNAL_STREAM ) != 0 );
|
|
|
|
face->stream = NULL;
|
|
|
|
/* get rid of it */
|
|
if ( face->internal )
|
|
{
|
|
FT_FREE( face->internal );
|
|
}
|
|
FT_FREE( face );
|
|
}
|
|
|
|
|
|
static void
|
|
Destroy_Driver( FT_Driver driver )
|
|
{
|
|
FT_List_Finalize( &driver->faces_list,
|
|
(FT_List_Destructor)destroy_face,
|
|
driver->root.memory,
|
|
driver );
|
|
}
|
|
|
|
|
|
/*************************************************************************/
|
|
/* */
|
|
/* <Function> */
|
|
/* find_unicode_charmap */
|
|
/* */
|
|
/* <Description> */
|
|
/* This function finds a Unicode charmap, if there is one. */
|
|
/* And if there is more than one, it tries to favour the more */
|
|
/* extensive one, i.e., one that supports UCS-4 against those which */
|
|
/* are limited to the BMP (said UCS-2 encoding.) */
|
|
/* */
|
|
/* This function is called from open_face() (just below), and also */
|
|
/* from FT_Select_Charmap( ..., FT_ENCODING_UNICODE ). */
|
|
/* */
|
|
static FT_Error
|
|
find_unicode_charmap( FT_Face face )
|
|
{
|
|
FT_CharMap* first;
|
|
FT_CharMap* cur;
|
|
|
|
|
|
/* caller should have already checked that `face' is valid */
|
|
FT_ASSERT( face );
|
|
|
|
first = face->charmaps;
|
|
|
|
if ( !first )
|
|
return FT_THROW( Invalid_CharMap_Handle );
|
|
|
|
/*
|
|
* The original TrueType specification(s) only specified charmap
|
|
* formats that are capable of mapping 8 or 16 bit character codes to
|
|
* glyph indices.
|
|
*
|
|
* However, recent updates to the Apple and OpenType specifications
|
|
* introduced new formats that are capable of mapping 32-bit character
|
|
* codes as well. And these are already used on some fonts, mainly to
|
|
* map non-BMP Asian ideographs as defined in Unicode.
|
|
*
|
|
* For compatibility purposes, these fonts generally come with
|
|
* *several* Unicode charmaps:
|
|
*
|
|
* - One of them in the "old" 16-bit format, that cannot access
|
|
* all glyphs in the font.
|
|
*
|
|
* - Another one in the "new" 32-bit format, that can access all
|
|
* the glyphs.
|
|
*
|
|
* This function has been written to always favor a 32-bit charmap
|
|
* when found. Otherwise, a 16-bit one is returned when found.
|
|
*/
|
|
|
|
/* Since the `interesting' table, with IDs (3,10), is normally the */
|
|
/* last one, we loop backwards. This loses with type1 fonts with */
|
|
/* non-BMP characters (<.0001%), this wins with .ttf with non-BMP */
|
|
/* chars (.01% ?), and this is the same about 99.99% of the time! */
|
|
|
|
cur = first + face->num_charmaps; /* points after the last one */
|
|
|
|
for ( ; --cur >= first; )
|
|
{
|
|
if ( cur[0]->encoding == FT_ENCODING_UNICODE )
|
|
{
|
|
/* XXX If some new encodings to represent UCS-4 are added, */
|
|
/* they should be added here. */
|
|
if ( ( cur[0]->platform_id == TT_PLATFORM_MICROSOFT &&
|
|
cur[0]->encoding_id == TT_MS_ID_UCS_4 ) ||
|
|
( cur[0]->platform_id == TT_PLATFORM_APPLE_UNICODE &&
|
|
cur[0]->encoding_id == TT_APPLE_ID_UNICODE_32 ) )
|
|
{
|
|
face->charmap = cur[0];
|
|
return FT_Err_Ok;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* We do not have any UCS-4 charmap. */
|
|
/* Do the loop again and search for UCS-2 charmaps. */
|
|
cur = first + face->num_charmaps;
|
|
|
|
for ( ; --cur >= first; )
|
|
{
|
|
if ( cur[0]->encoding == FT_ENCODING_UNICODE )
|
|
{
|
|
face->charmap = cur[0];
|
|
return FT_Err_Ok;
|
|
}
|
|
}
|
|
|
|
return FT_THROW( Invalid_CharMap_Handle );
|
|
}
|
|
|
|
|
|
/*************************************************************************/
|
|
/* */
|
|
/* <Function> */
|
|
/* find_variant_selector_charmap */
|
|
/* */
|
|
/* <Description> */
|
|
/* This function finds the variant selector charmap, if there is one. */
|
|
/* There can only be one (platform=0, specific=5, format=14). */
|
|
/* */
|
|
static FT_CharMap
|
|
find_variant_selector_charmap( FT_Face face )
|
|
{
|
|
FT_CharMap* first;
|
|
FT_CharMap* end;
|
|
FT_CharMap* cur;
|
|
|
|
|
|
/* caller should have already checked that `face' is valid */
|
|
FT_ASSERT( face );
|
|
|
|
first = face->charmaps;
|
|
|
|
if ( !first )
|
|
return NULL;
|
|
|
|
end = first + face->num_charmaps; /* points after the last one */
|
|
|
|
for ( cur = first; cur < end; ++cur )
|
|
{
|
|
if ( cur[0]->platform_id == TT_PLATFORM_APPLE_UNICODE &&
|
|
cur[0]->encoding_id == TT_APPLE_ID_VARIANT_SELECTOR &&
|
|
FT_Get_CMap_Format( cur[0] ) == 14 )
|
|
return cur[0];
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/*************************************************************************/
|
|
/* */
|
|
/* <Function> */
|
|
/* open_face */
|
|
/* */
|
|
/* <Description> */
|
|
/* This function does some work for FT_Open_Face(). */
|
|
/* */
|
|
static FT_Error
|
|
open_face( FT_Driver driver,
|
|
FT_Stream *astream,
|
|
FT_Bool external_stream,
|
|
FT_Long face_index,
|
|
FT_Int num_params,
|
|
FT_Parameter* params,
|
|
FT_Face *aface )
|
|
{
|
|
FT_Memory memory;
|
|
FT_Driver_Class clazz;
|
|
FT_Face face = NULL;
|
|
FT_Face_Internal internal = NULL;
|
|
|
|
FT_Error error, error2;
|
|
|
|
|
|
clazz = driver->clazz;
|
|
memory = driver->root.memory;
|
|
|
|
/* allocate the face object and perform basic initialization */
|
|
if ( FT_ALLOC( face, clazz->face_object_size ) )
|
|
goto Fail;
|
|
|
|
face->driver = driver;
|
|
face->memory = memory;
|
|
face->stream = *astream;
|
|
|
|
/* set the FT_FACE_FLAG_EXTERNAL_STREAM bit for FT_Done_Face */
|
|
if ( external_stream )
|
|
face->face_flags |= FT_FACE_FLAG_EXTERNAL_STREAM;
|
|
|
|
if ( FT_NEW( internal ) )
|
|
goto Fail;
|
|
|
|
face->internal = internal;
|
|
|
|
#ifdef FT_CONFIG_OPTION_INCREMENTAL
|
|
{
|
|
int i;
|
|
|
|
|
|
face->internal->incremental_interface = NULL;
|
|
for ( i = 0; i < num_params && !face->internal->incremental_interface;
|
|
i++ )
|
|
if ( params[i].tag == FT_PARAM_TAG_INCREMENTAL )
|
|
face->internal->incremental_interface =
|
|
(FT_Incremental_Interface)params[i].data;
|
|
}
|
|
#endif
|
|
|
|
if ( clazz->init_face )
|
|
error = clazz->init_face( *astream,
|
|
face,
|
|
(FT_Int)face_index,
|
|
num_params,
|
|
params );
|
|
*astream = face->stream; /* Stream may have been changed. */
|
|
if ( error )
|
|
goto Fail;
|
|
|
|
/* select Unicode charmap by default */
|
|
error2 = find_unicode_charmap( face );
|
|
|
|
/* if no Unicode charmap can be found, FT_Err_Invalid_CharMap_Handle */
|
|
/* is returned. */
|
|
|
|
/* no error should happen, but we want to play safe */
|
|
if ( error2 && FT_ERR_NEQ( error2, Invalid_CharMap_Handle ) )
|
|
{
|
|
error = error2;
|
|
goto Fail;
|
|
}
|
|
|
|
*aface = face;
|
|
|
|
Fail:
|
|
if ( error )
|
|
{
|
|
destroy_charmaps( face, memory );
|
|
if ( clazz->done_face )
|
|
clazz->done_face( face );
|
|
FT_FREE( internal );
|
|
FT_FREE( face );
|
|
*aface = NULL;
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
|
|
/* there's a Mac-specific extended implementation of FT_New_Face() */
|
|
/* in src/base/ftmac.c */
|
|
|
|
#ifndef FT_MACINTOSH
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_New_Face( FT_Library library,
|
|
const char* pathname,
|
|
FT_Long face_index,
|
|
FT_Face *aface )
|
|
{
|
|
FT_Open_Args args;
|
|
|
|
|
|
/* test for valid `library' and `aface' delayed to `FT_Open_Face' */
|
|
if ( !pathname )
|
|
return FT_THROW( Invalid_Argument );
|
|
|
|
args.flags = FT_OPEN_PATHNAME;
|
|
args.pathname = (char*)pathname;
|
|
args.stream = NULL;
|
|
|
|
return FT_Open_Face( library, &args, face_index, aface );
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( 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 )
|
|
{
|
|
FT_Open_Args args;
|
|
|
|
|
|
/* test for valid `library' and `face' delayed to `FT_Open_Face' */
|
|
if ( !file_base )
|
|
return FT_THROW( Invalid_Argument );
|
|
|
|
args.flags = FT_OPEN_MEMORY;
|
|
args.memory_base = file_base;
|
|
args.memory_size = file_size;
|
|
args.stream = NULL;
|
|
|
|
return FT_Open_Face( library, &args, face_index, aface );
|
|
}
|
|
|
|
|
|
#ifdef FT_CONFIG_OPTION_MAC_FONTS
|
|
|
|
/* The behavior here is very similar to that in base/ftmac.c, but it */
|
|
/* is designed to work on non-mac systems, so no mac specific calls. */
|
|
/* */
|
|
/* We look at the file and determine if it is a mac dfont file or a mac */
|
|
/* resource file, or a macbinary file containing a mac resource file. */
|
|
/* */
|
|
/* Unlike ftmac I'm not going to look at a `FOND'. I don't really see */
|
|
/* the point, especially since there may be multiple `FOND' resources. */
|
|
/* Instead I'll just look for `sfnt' and `POST' resources, ordered as */
|
|
/* they occur in the file. */
|
|
/* */
|
|
/* Note that multiple `POST' resources do not mean multiple postscript */
|
|
/* fonts; they all get jammed together to make what is essentially a */
|
|
/* pfb file. */
|
|
/* */
|
|
/* We aren't interested in `NFNT' or `FONT' bitmap resources. */
|
|
/* */
|
|
/* As soon as we get an `sfnt' load it into memory and pass it off to */
|
|
/* FT_Open_Face. */
|
|
/* */
|
|
/* If we have a (set of) `POST' resources, massage them into a (memory) */
|
|
/* pfb file and pass that to FT_Open_Face. (As with ftmac.c I'm not */
|
|
/* going to try to save the kerning info. After all that lives in the */
|
|
/* `FOND' which isn't in the file containing the `POST' resources so */
|
|
/* we don't really have access to it. */
|
|
|
|
|
|
/* Finalizer for a memory stream; gets called by FT_Done_Face(). */
|
|
/* It frees the memory it uses. */
|
|
/* From ftmac.c. */
|
|
static void
|
|
memory_stream_close( FT_Stream stream )
|
|
{
|
|
FT_Memory memory = stream->memory;
|
|
|
|
|
|
FT_FREE( stream->base );
|
|
|
|
stream->size = 0;
|
|
stream->base = NULL;
|
|
stream->close = NULL;
|
|
}
|
|
|
|
|
|
/* Create a new memory stream from a buffer and a size. */
|
|
/* From ftmac.c. */
|
|
static FT_Error
|
|
new_memory_stream( FT_Library library,
|
|
FT_Byte* base,
|
|
FT_ULong size,
|
|
FT_Stream_CloseFunc close,
|
|
FT_Stream *astream )
|
|
{
|
|
FT_Error error;
|
|
FT_Memory memory;
|
|
FT_Stream stream = NULL;
|
|
|
|
|
|
if ( !library )
|
|
return FT_THROW( Invalid_Library_Handle );
|
|
|
|
if ( !base )
|
|
return FT_THROW( Invalid_Argument );
|
|
|
|
*astream = NULL;
|
|
memory = library->memory;
|
|
if ( FT_NEW( stream ) )
|
|
goto Exit;
|
|
|
|
FT_Stream_OpenMemory( stream, base, size );
|
|
|
|
stream->close = close;
|
|
|
|
*astream = stream;
|
|
|
|
Exit:
|
|
return error;
|
|
}
|
|
|
|
|
|
/* Create a new FT_Face given a buffer and a driver name. */
|
|
/* from ftmac.c */
|
|
FT_LOCAL_DEF( FT_Error )
|
|
open_face_from_buffer( FT_Library library,
|
|
FT_Byte* base,
|
|
FT_ULong size,
|
|
FT_Long face_index,
|
|
const char* driver_name,
|
|
FT_Face *aface )
|
|
{
|
|
FT_Open_Args args;
|
|
FT_Error error;
|
|
FT_Stream stream = NULL;
|
|
FT_Memory memory = library->memory;
|
|
|
|
|
|
error = new_memory_stream( library,
|
|
base,
|
|
size,
|
|
memory_stream_close,
|
|
&stream );
|
|
if ( error )
|
|
{
|
|
FT_FREE( base );
|
|
return error;
|
|
}
|
|
|
|
args.flags = FT_OPEN_STREAM;
|
|
args.stream = stream;
|
|
if ( driver_name )
|
|
{
|
|
args.flags = args.flags | FT_OPEN_DRIVER;
|
|
args.driver = FT_Get_Module( library, driver_name );
|
|
}
|
|
|
|
#ifdef FT_MACINTOSH
|
|
/* At this point, the face index has served its purpose; */
|
|
/* whoever calls this function has already used it to */
|
|
/* locate the correct font data. We should not propagate */
|
|
/* this index to FT_Open_Face() (unless it is negative). */
|
|
|
|
if ( face_index > 0 )
|
|
face_index &= 0x7FFF0000L; /* retain GX data */
|
|
#endif
|
|
|
|
error = FT_Open_Face( library, &args, face_index, aface );
|
|
|
|
if ( error == FT_Err_Ok )
|
|
(*aface)->face_flags &= ~FT_FACE_FLAG_EXTERNAL_STREAM;
|
|
else
|
|
#ifdef FT_MACINTOSH
|
|
FT_Stream_Free( stream, 0 );
|
|
#else
|
|
{
|
|
FT_Stream_Close( stream );
|
|
FT_FREE( stream );
|
|
}
|
|
#endif
|
|
|
|
return error;
|
|
}
|
|
|
|
|
|
/* Look up `TYP1' or `CID ' table from sfnt table directory. */
|
|
/* `offset' and `length' must exclude the binary header in tables. */
|
|
|
|
/* Type 1 and CID-keyed font drivers should recognize sfnt-wrapped */
|
|
/* format too. Here, since we can't expect that the TrueType font */
|
|
/* driver is loaded unconditionally, we must parse the font by */
|
|
/* ourselves. We are only interested in the name of the table and */
|
|
/* the offset. */
|
|
|
|
static FT_Error
|
|
ft_lookup_PS_in_sfnt_stream( FT_Stream stream,
|
|
FT_Long face_index,
|
|
FT_ULong* offset,
|
|
FT_ULong* length,
|
|
FT_Bool* is_sfnt_cid )
|
|
{
|
|
FT_Error error;
|
|
FT_UShort numTables;
|
|
FT_Long pstable_index;
|
|
FT_ULong tag;
|
|
int i;
|
|
|
|
|
|
*offset = 0;
|
|
*length = 0;
|
|
*is_sfnt_cid = FALSE;
|
|
|
|
/* TODO: support for sfnt-wrapped PS/CID in TTC format */
|
|
|
|
/* version check for 'typ1' (should be ignored?) */
|
|
if ( FT_READ_ULONG( tag ) )
|
|
return error;
|
|
if ( tag != TTAG_typ1 )
|
|
return FT_THROW( Unknown_File_Format );
|
|
|
|
if ( FT_READ_USHORT( numTables ) )
|
|
return error;
|
|
if ( FT_STREAM_SKIP( 2 * 3 ) ) /* skip binary search header */
|
|
return error;
|
|
|
|
pstable_index = -1;
|
|
*is_sfnt_cid = FALSE;
|
|
|
|
for ( i = 0; i < numTables; i++ )
|
|
{
|
|
if ( FT_READ_ULONG( tag ) || FT_STREAM_SKIP( 4 ) ||
|
|
FT_READ_ULONG( *offset ) || FT_READ_ULONG( *length ) )
|
|
return error;
|
|
|
|
if ( tag == TTAG_CID )
|
|
{
|
|
pstable_index++;
|
|
*offset += 22;
|
|
*length -= 22;
|
|
*is_sfnt_cid = TRUE;
|
|
if ( face_index < 0 )
|
|
return FT_Err_Ok;
|
|
}
|
|
else if ( tag == TTAG_TYP1 )
|
|
{
|
|
pstable_index++;
|
|
*offset += 24;
|
|
*length -= 24;
|
|
*is_sfnt_cid = FALSE;
|
|
if ( face_index < 0 )
|
|
return FT_Err_Ok;
|
|
}
|
|
if ( face_index >= 0 && pstable_index == face_index )
|
|
return FT_Err_Ok;
|
|
}
|
|
return FT_THROW( Table_Missing );
|
|
}
|
|
|
|
|
|
FT_LOCAL_DEF( FT_Error )
|
|
open_face_PS_from_sfnt_stream( FT_Library library,
|
|
FT_Stream stream,
|
|
FT_Long face_index,
|
|
FT_Int num_params,
|
|
FT_Parameter *params,
|
|
FT_Face *aface )
|
|
{
|
|
FT_Error error;
|
|
FT_Memory memory = library->memory;
|
|
FT_ULong offset, length;
|
|
FT_ULong pos;
|
|
FT_Bool is_sfnt_cid;
|
|
FT_Byte* sfnt_ps = NULL;
|
|
|
|
FT_UNUSED( num_params );
|
|
FT_UNUSED( params );
|
|
|
|
|
|
/* ignore GX stuff */
|
|
if ( face_index > 0 )
|
|
face_index &= 0xFFFFL;
|
|
|
|
pos = FT_STREAM_POS();
|
|
|
|
error = ft_lookup_PS_in_sfnt_stream( stream,
|
|
face_index,
|
|
&offset,
|
|
&length,
|
|
&is_sfnt_cid );
|
|
if ( error )
|
|
goto Exit;
|
|
|
|
error = FT_Stream_Seek( stream, pos + offset );
|
|
if ( error )
|
|
goto Exit;
|
|
|
|
if ( FT_ALLOC( sfnt_ps, (FT_Long)length ) )
|
|
goto Exit;
|
|
|
|
error = FT_Stream_Read( stream, (FT_Byte *)sfnt_ps, length );
|
|
if ( error ) {
|
|
FT_FREE( sfnt_ps );
|
|
goto Exit;
|
|
}
|
|
|
|
error = open_face_from_buffer( library,
|
|
sfnt_ps,
|
|
length,
|
|
FT_MIN( face_index, 0 ),
|
|
is_sfnt_cid ? "cid" : "type1",
|
|
aface );
|
|
Exit:
|
|
{
|
|
FT_Error error1;
|
|
|
|
|
|
if ( FT_ERR_EQ( error, Unknown_File_Format ) )
|
|
{
|
|
error1 = FT_Stream_Seek( stream, pos );
|
|
if ( error1 )
|
|
return error1;
|
|
}
|
|
|
|
return error;
|
|
}
|
|
}
|
|
|
|
|
|
#ifndef FT_MACINTOSH
|
|
|
|
/* The resource header says we've got resource_cnt `POST' (type1) */
|
|
/* resources in this file. They all need to be coalesced into */
|
|
/* one lump which gets passed on to the type1 driver. */
|
|
/* Here can be only one PostScript font in a file so face_index */
|
|
/* must be 0 (or -1). */
|
|
/* */
|
|
static FT_Error
|
|
Mac_Read_POST_Resource( FT_Library library,
|
|
FT_Stream stream,
|
|
FT_Long *offsets,
|
|
FT_Long resource_cnt,
|
|
FT_Long face_index,
|
|
FT_Face *aface )
|
|
{
|
|
FT_Error error = FT_ERR( Cannot_Open_Resource );
|
|
FT_Memory memory = library->memory;
|
|
FT_Byte* pfb_data = NULL;
|
|
int i, type, flags;
|
|
FT_ULong len;
|
|
FT_ULong pfb_len, pfb_pos, pfb_lenpos;
|
|
FT_ULong rlen, temp;
|
|
|
|
|
|
if ( face_index == -1 )
|
|
face_index = 0;
|
|
if ( face_index != 0 )
|
|
return error;
|
|
|
|
/* Find the length of all the POST resources, concatenated. Assume */
|
|
/* worst case (each resource in its own section). */
|
|
pfb_len = 0;
|
|
for ( i = 0; i < resource_cnt; ++i )
|
|
{
|
|
error = FT_Stream_Seek( stream, (FT_ULong)offsets[i] );
|
|
if ( error )
|
|
goto Exit;
|
|
if ( FT_READ_ULONG( temp ) )
|
|
goto Exit;
|
|
|
|
/* FT2 allocator takes signed long buffer length,
|
|
* too large value causing overflow should be checked
|
|
*/
|
|
FT_TRACE4(( " POST fragment #%d: length=0x%08x"
|
|
" total pfb_len=0x%08x\n",
|
|
i, temp, pfb_len + temp + 6));
|
|
if ( FT_MAC_RFORK_MAX_LEN < temp ||
|
|
FT_MAC_RFORK_MAX_LEN - temp < pfb_len + 6 )
|
|
{
|
|
FT_TRACE2(( " MacOS resource length cannot exceed"
|
|
" 0x%08x\n", FT_MAC_RFORK_MAX_LEN ));
|
|
error = FT_THROW( Invalid_Offset );
|
|
goto Exit;
|
|
}
|
|
|
|
pfb_len += temp + 6;
|
|
}
|
|
|
|
FT_TRACE2(( " total buffer size to concatenate %d"
|
|
" POST fragments: 0x%08x\n",
|
|
resource_cnt, pfb_len + 2));
|
|
if ( pfb_len + 2 < 6 ) {
|
|
FT_TRACE2(( " too long fragment length makes"
|
|
" pfb_len confused: pfb_len=0x%08x\n", pfb_len ));
|
|
error = FT_THROW( Array_Too_Large );
|
|
goto Exit;
|
|
}
|
|
if ( FT_ALLOC( pfb_data, (FT_Long)pfb_len + 2 ) )
|
|
goto Exit;
|
|
|
|
pfb_data[0] = 0x80;
|
|
pfb_data[1] = 1; /* Ascii section */
|
|
pfb_data[2] = 0; /* 4-byte length, fill in later */
|
|
pfb_data[3] = 0;
|
|
pfb_data[4] = 0;
|
|
pfb_data[5] = 0;
|
|
pfb_pos = 6;
|
|
pfb_lenpos = 2;
|
|
|
|
len = 0;
|
|
type = 1;
|
|
for ( i = 0; i < resource_cnt; ++i )
|
|
{
|
|
error = FT_Stream_Seek( stream, (FT_ULong)offsets[i] );
|
|
if ( error )
|
|
goto Exit2;
|
|
if ( FT_READ_ULONG( rlen ) )
|
|
goto Exit2;
|
|
|
|
/* FT2 allocator takes signed long buffer length,
|
|
* too large fragment length causing overflow should be checked
|
|
*/
|
|
if ( 0x7FFFFFFFUL < rlen )
|
|
{
|
|
error = FT_THROW( Invalid_Offset );
|
|
goto Exit2;
|
|
}
|
|
|
|
if ( FT_READ_USHORT( flags ) )
|
|
goto Exit2;
|
|
FT_TRACE3(( "POST fragment[%d]: offsets=0x%08x, rlen=0x%08x, flags=0x%04x\n",
|
|
i, offsets[i], rlen, flags ));
|
|
|
|
error = FT_ERR( Array_Too_Large );
|
|
/* postpone the check of rlen longer than buffer until FT_Stream_Read() */
|
|
if ( ( flags >> 8 ) == 0 ) /* Comment, should not be loaded */
|
|
{
|
|
FT_TRACE3(( " Skip POST fragment #%d because it is a comment\n", i ));
|
|
continue;
|
|
}
|
|
|
|
/* the flags are part of the resource, so rlen >= 2. */
|
|
/* but some fonts declare rlen = 0 for empty fragment */
|
|
if ( rlen > 2 )
|
|
rlen -= 2;
|
|
else
|
|
rlen = 0;
|
|
|
|
if ( ( flags >> 8 ) == type )
|
|
len += rlen;
|
|
else
|
|
{
|
|
FT_TRACE3(( " Write POST fragment #%d header (4-byte) to buffer"
|
|
" %p + 0x%08x\n", i, pfb_data, pfb_lenpos ));
|
|
if ( pfb_lenpos + 3 > pfb_len + 2 )
|
|
goto Exit2;
|
|
pfb_data[pfb_lenpos ] = (FT_Byte)( len );
|
|
pfb_data[pfb_lenpos + 1] = (FT_Byte)( len >> 8 );
|
|
pfb_data[pfb_lenpos + 2] = (FT_Byte)( len >> 16 );
|
|
pfb_data[pfb_lenpos + 3] = (FT_Byte)( len >> 24 );
|
|
|
|
if ( ( flags >> 8 ) == 5 ) /* End of font mark */
|
|
break;
|
|
|
|
FT_TRACE3(( " Write POST fragment #%d header (6-byte) to buffer"
|
|
" %p + 0x%08x\n", i, pfb_data, pfb_pos ));
|
|
if ( pfb_pos + 6 > pfb_len + 2 )
|
|
goto Exit2;
|
|
pfb_data[pfb_pos++] = 0x80;
|
|
|
|
type = flags >> 8;
|
|
len = rlen;
|
|
|
|
pfb_data[pfb_pos++] = (FT_Byte)type;
|
|
pfb_lenpos = pfb_pos;
|
|
pfb_data[pfb_pos++] = 0; /* 4-byte length, fill in later */
|
|
pfb_data[pfb_pos++] = 0;
|
|
pfb_data[pfb_pos++] = 0;
|
|
pfb_data[pfb_pos++] = 0;
|
|
}
|
|
|
|
if ( pfb_pos > pfb_len || pfb_pos + rlen > pfb_len )
|
|
goto Exit2;
|
|
|
|
FT_TRACE3(( " Load POST fragment #%d (%d byte) to buffer"
|
|
" %p + 0x%08x\n", i, rlen, pfb_data, pfb_pos ));
|
|
error = FT_Stream_Read( stream, (FT_Byte *)pfb_data + pfb_pos, rlen );
|
|
if ( error )
|
|
goto Exit2;
|
|
pfb_pos += rlen;
|
|
}
|
|
|
|
error = FT_ERR( Array_Too_Large );
|
|
if ( pfb_pos + 2 > pfb_len + 2 )
|
|
goto Exit2;
|
|
pfb_data[pfb_pos++] = 0x80;
|
|
pfb_data[pfb_pos++] = 3;
|
|
|
|
if ( pfb_lenpos + 3 > pfb_len + 2 )
|
|
goto Exit2;
|
|
pfb_data[pfb_lenpos ] = (FT_Byte)( len );
|
|
pfb_data[pfb_lenpos + 1] = (FT_Byte)( len >> 8 );
|
|
pfb_data[pfb_lenpos + 2] = (FT_Byte)( len >> 16 );
|
|
pfb_data[pfb_lenpos + 3] = (FT_Byte)( len >> 24 );
|
|
|
|
return open_face_from_buffer( library,
|
|
pfb_data,
|
|
pfb_pos,
|
|
face_index,
|
|
"type1",
|
|
aface );
|
|
|
|
Exit2:
|
|
if ( error == FT_ERR( Array_Too_Large ) )
|
|
FT_TRACE2(( " Abort due to too-short buffer to store"
|
|
" all POST fragments\n" ));
|
|
else if ( error == FT_ERR( Invalid_Offset ) )
|
|
FT_TRACE2(( " Abort due to invalid offset in a POST fragment\n" ));
|
|
if ( error )
|
|
error = FT_ERR( Cannot_Open_Resource );
|
|
FT_FREE( pfb_data );
|
|
|
|
Exit:
|
|
return error;
|
|
}
|
|
|
|
|
|
/* The resource header says we've got resource_cnt `sfnt' */
|
|
/* (TrueType/OpenType) resources in this file. Look through */
|
|
/* them for the one indicated by face_index, load it into mem, */
|
|
/* pass it on to the truetype driver, and return it. */
|
|
/* */
|
|
static FT_Error
|
|
Mac_Read_sfnt_Resource( FT_Library library,
|
|
FT_Stream stream,
|
|
FT_Long *offsets,
|
|
FT_Long resource_cnt,
|
|
FT_Long face_index,
|
|
FT_Face *aface )
|
|
{
|
|
FT_Memory memory = library->memory;
|
|
FT_Byte* sfnt_data = NULL;
|
|
FT_Error error;
|
|
FT_ULong flag_offset;
|
|
FT_Long rlen;
|
|
int is_cff;
|
|
FT_Long face_index_in_resource = 0;
|
|
|
|
|
|
if ( face_index == -1 )
|
|
face_index = 0;
|
|
if ( face_index >= resource_cnt )
|
|
return FT_THROW( Cannot_Open_Resource );
|
|
|
|
flag_offset = (FT_ULong)offsets[face_index];
|
|
error = FT_Stream_Seek( stream, flag_offset );
|
|
if ( error )
|
|
goto Exit;
|
|
|
|
if ( FT_READ_LONG( rlen ) )
|
|
goto Exit;
|
|
if ( rlen == -1 )
|
|
return FT_THROW( Cannot_Open_Resource );
|
|
if ( (FT_ULong)rlen > FT_MAC_RFORK_MAX_LEN )
|
|
return FT_THROW( Invalid_Offset );
|
|
|
|
error = open_face_PS_from_sfnt_stream( library,
|
|
stream,
|
|
face_index,
|
|
0, NULL,
|
|
aface );
|
|
if ( !error )
|
|
goto Exit;
|
|
|
|
/* rewind sfnt stream before open_face_PS_from_sfnt_stream() */
|
|
error = FT_Stream_Seek( stream, flag_offset + 4 );
|
|
if ( error )
|
|
goto Exit;
|
|
|
|
if ( FT_ALLOC( sfnt_data, rlen ) )
|
|
return error;
|
|
error = FT_Stream_Read( stream, (FT_Byte *)sfnt_data, (FT_ULong)rlen );
|
|
if ( error ) {
|
|
FT_FREE( sfnt_data );
|
|
goto Exit;
|
|
}
|
|
|
|
is_cff = rlen > 4 && !ft_memcmp( sfnt_data, "OTTO", 4 );
|
|
error = open_face_from_buffer( library,
|
|
sfnt_data,
|
|
(FT_ULong)rlen,
|
|
face_index_in_resource,
|
|
is_cff ? "cff" : "truetype",
|
|
aface );
|
|
|
|
Exit:
|
|
return error;
|
|
}
|
|
|
|
|
|
/* Check for a valid resource fork header, or a valid dfont */
|
|
/* header. In a resource fork the first 16 bytes are repeated */
|
|
/* at the location specified by bytes 4-7. In a dfont bytes */
|
|
/* 4-7 point to 16 bytes of zeroes instead. */
|
|
/* */
|
|
static FT_Error
|
|
IsMacResource( FT_Library library,
|
|
FT_Stream stream,
|
|
FT_Long resource_offset,
|
|
FT_Long face_index,
|
|
FT_Face *aface )
|
|
{
|
|
FT_Memory memory = library->memory;
|
|
FT_Error error;
|
|
FT_Long map_offset, rdara_pos;
|
|
FT_Long *data_offsets;
|
|
FT_Long count;
|
|
|
|
|
|
error = FT_Raccess_Get_HeaderInfo( library, stream, resource_offset,
|
|
&map_offset, &rdara_pos );
|
|
if ( error )
|
|
return error;
|
|
|
|
/* POST resources must be sorted to concatenate properly */
|
|
error = FT_Raccess_Get_DataOffsets( library, stream,
|
|
map_offset, rdara_pos,
|
|
TTAG_POST, TRUE,
|
|
&data_offsets, &count );
|
|
if ( !error )
|
|
{
|
|
error = Mac_Read_POST_Resource( library, stream, data_offsets, count,
|
|
face_index, aface );
|
|
FT_FREE( data_offsets );
|
|
/* POST exists in an LWFN providing a single face */
|
|
if ( !error )
|
|
(*aface)->num_faces = 1;
|
|
return error;
|
|
}
|
|
|
|
/* sfnt resources should not be sorted to preserve the face order by
|
|
QuickDraw API */
|
|
error = FT_Raccess_Get_DataOffsets( library, stream,
|
|
map_offset, rdara_pos,
|
|
TTAG_sfnt, FALSE,
|
|
&data_offsets, &count );
|
|
if ( !error )
|
|
{
|
|
FT_Long face_index_internal = face_index % count;
|
|
|
|
|
|
error = Mac_Read_sfnt_Resource( library, stream, data_offsets, count,
|
|
face_index_internal, aface );
|
|
FT_FREE( data_offsets );
|
|
if ( !error )
|
|
(*aface)->num_faces = count;
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
|
|
/* Check for a valid macbinary header, and if we find one */
|
|
/* check that the (flattened) resource fork in it is valid. */
|
|
/* */
|
|
static FT_Error
|
|
IsMacBinary( FT_Library library,
|
|
FT_Stream stream,
|
|
FT_Long face_index,
|
|
FT_Face *aface )
|
|
{
|
|
unsigned char header[128];
|
|
FT_Error error;
|
|
FT_Long dlen, offset;
|
|
|
|
|
|
if ( NULL == stream )
|
|
return FT_THROW( Invalid_Stream_Operation );
|
|
|
|
error = FT_Stream_Seek( stream, 0 );
|
|
if ( error )
|
|
goto Exit;
|
|
|
|
error = FT_Stream_Read( stream, (FT_Byte*)header, 128 );
|
|
if ( error )
|
|
goto Exit;
|
|
|
|
if ( header[ 0] != 0 ||
|
|
header[74] != 0 ||
|
|
header[82] != 0 ||
|
|
header[ 1] == 0 ||
|
|
header[ 1] > 33 ||
|
|
header[63] != 0 ||
|
|
header[2 + header[1]] != 0 ||
|
|
header[0x53] > 0x7F )
|
|
return FT_THROW( Unknown_File_Format );
|
|
|
|
dlen = ( header[0x53] << 24 ) |
|
|
( header[0x54] << 16 ) |
|
|
( header[0x55] << 8 ) |
|
|
header[0x56];
|
|
#if 0
|
|
rlen = ( header[0x57] << 24 ) |
|
|
( header[0x58] << 16 ) |
|
|
( header[0x59] << 8 ) |
|
|
header[0x5A];
|
|
#endif /* 0 */
|
|
offset = 128 + ( ( dlen + 127 ) & ~127 );
|
|
|
|
return IsMacResource( library, stream, offset, face_index, aface );
|
|
|
|
Exit:
|
|
return error;
|
|
}
|
|
|
|
|
|
static FT_Error
|
|
load_face_in_embedded_rfork( FT_Library library,
|
|
FT_Stream stream,
|
|
FT_Long face_index,
|
|
FT_Face *aface,
|
|
const FT_Open_Args *args )
|
|
{
|
|
|
|
#undef FT_COMPONENT
|
|
#define FT_COMPONENT trace_raccess
|
|
|
|
FT_Memory memory = library->memory;
|
|
FT_Error error = FT_ERR( Unknown_File_Format );
|
|
FT_UInt i;
|
|
|
|
char * file_names[FT_RACCESS_N_RULES];
|
|
FT_Long offsets[FT_RACCESS_N_RULES];
|
|
FT_Error errors[FT_RACCESS_N_RULES];
|
|
FT_Bool is_darwin_vfs, vfs_rfork_has_no_font = FALSE; /* not tested */
|
|
|
|
FT_Open_Args args2;
|
|
FT_Stream stream2 = NULL;
|
|
|
|
|
|
FT_Raccess_Guess( library, stream,
|
|
args->pathname, file_names, offsets, errors );
|
|
|
|
for ( i = 0; i < FT_RACCESS_N_RULES; i++ )
|
|
{
|
|
is_darwin_vfs = ft_raccess_rule_by_darwin_vfs( library, i );
|
|
if ( is_darwin_vfs && vfs_rfork_has_no_font )
|
|
{
|
|
FT_TRACE3(( "Skip rule %d: darwin vfs resource fork"
|
|
" is already checked and"
|
|
" no font is found\n", i ));
|
|
continue;
|
|
}
|
|
|
|
if ( errors[i] )
|
|
{
|
|
FT_TRACE3(( "Error[%d] has occurred in rule %d\n", errors[i], i ));
|
|
continue;
|
|
}
|
|
|
|
args2.flags = FT_OPEN_PATHNAME;
|
|
args2.pathname = file_names[i] ? file_names[i] : args->pathname;
|
|
|
|
FT_TRACE3(( "Try rule %d: %s (offset=%d) ...",
|
|
i, args2.pathname, offsets[i] ));
|
|
|
|
error = FT_Stream_New( library, &args2, &stream2 );
|
|
if ( is_darwin_vfs && FT_ERR_EQ( error, Cannot_Open_Stream ) )
|
|
vfs_rfork_has_no_font = TRUE;
|
|
|
|
if ( error )
|
|
{
|
|
FT_TRACE3(( "failed\n" ));
|
|
continue;
|
|
}
|
|
|
|
error = IsMacResource( library, stream2, offsets[i],
|
|
face_index, aface );
|
|
FT_Stream_Free( stream2, 0 );
|
|
|
|
FT_TRACE3(( "%s\n", error ? "failed": "successful" ));
|
|
|
|
if ( !error )
|
|
break;
|
|
else if ( is_darwin_vfs )
|
|
vfs_rfork_has_no_font = TRUE;
|
|
}
|
|
|
|
for (i = 0; i < FT_RACCESS_N_RULES; i++)
|
|
{
|
|
if ( file_names[i] )
|
|
FT_FREE( file_names[i] );
|
|
}
|
|
|
|
/* Caller (load_mac_face) requires FT_Err_Unknown_File_Format. */
|
|
if ( error )
|
|
error = FT_ERR( Unknown_File_Format );
|
|
|
|
return error;
|
|
|
|
#undef FT_COMPONENT
|
|
#define FT_COMPONENT trace_objs
|
|
|
|
}
|
|
|
|
|
|
/* Check for some macintosh formats without Carbon framework. */
|
|
/* Is this a macbinary file? If so look at the resource fork. */
|
|
/* Is this a mac dfont file? */
|
|
/* Is this an old style resource fork? (in data) */
|
|
/* Else call load_face_in_embedded_rfork to try extra rules */
|
|
/* (defined in `ftrfork.c'). */
|
|
/* */
|
|
static FT_Error
|
|
load_mac_face( FT_Library library,
|
|
FT_Stream stream,
|
|
FT_Long face_index,
|
|
FT_Face *aface,
|
|
const FT_Open_Args *args )
|
|
{
|
|
FT_Error error;
|
|
FT_UNUSED( args );
|
|
|
|
|
|
error = IsMacBinary( library, stream, face_index, aface );
|
|
if ( FT_ERR_EQ( error, Unknown_File_Format ) )
|
|
{
|
|
|
|
#undef FT_COMPONENT
|
|
#define FT_COMPONENT trace_raccess
|
|
|
|
#ifdef FT_DEBUG_LEVEL_TRACE
|
|
FT_TRACE3(( "Try as dfont: " ));
|
|
if ( !( args->flags & FT_OPEN_MEMORY ) )
|
|
FT_TRACE3(( "%s ...", args->pathname ));
|
|
#endif
|
|
|
|
error = IsMacResource( library, stream, 0, face_index, aface );
|
|
|
|
FT_TRACE3(( "%s\n", error ? "failed" : "successful" ));
|
|
|
|
#undef FT_COMPONENT
|
|
#define FT_COMPONENT trace_objs
|
|
|
|
}
|
|
|
|
if ( ( FT_ERR_EQ( error, Unknown_File_Format ) ||
|
|
FT_ERR_EQ( error, Invalid_Stream_Operation ) ) &&
|
|
( args->flags & FT_OPEN_PATHNAME ) )
|
|
error = load_face_in_embedded_rfork( library, stream,
|
|
face_index, aface, args );
|
|
return error;
|
|
}
|
|
#endif
|
|
|
|
#endif /* !FT_MACINTOSH && FT_CONFIG_OPTION_MAC_FONTS */
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Open_Face( FT_Library library,
|
|
const FT_Open_Args* args,
|
|
FT_Long face_index,
|
|
FT_Face *aface )
|
|
{
|
|
FT_Error error;
|
|
FT_Driver driver = NULL;
|
|
FT_Memory memory = NULL;
|
|
FT_Stream stream = NULL;
|
|
FT_Face face = NULL;
|
|
FT_ListNode node = NULL;
|
|
FT_Bool external_stream;
|
|
FT_Module* cur;
|
|
FT_Module* limit;
|
|
|
|
|
|
/* test for valid `library' delayed to `FT_Stream_New' */
|
|
|
|
if ( ( !aface && face_index >= 0 ) || !args )
|
|
return FT_THROW( Invalid_Argument );
|
|
|
|
external_stream = FT_BOOL( ( args->flags & FT_OPEN_STREAM ) &&
|
|
args->stream );
|
|
|
|
/* create input stream */
|
|
error = FT_Stream_New( library, args, &stream );
|
|
if ( error )
|
|
goto Fail3;
|
|
|
|
memory = library->memory;
|
|
|
|
/* If the font driver is specified in the `args' structure, use */
|
|
/* it. Otherwise, we scan the list of registered drivers. */
|
|
if ( ( args->flags & FT_OPEN_DRIVER ) && args->driver )
|
|
{
|
|
driver = FT_DRIVER( args->driver );
|
|
|
|
/* not all modules are drivers, so check... */
|
|
if ( FT_MODULE_IS_DRIVER( driver ) )
|
|
{
|
|
FT_Int num_params = 0;
|
|
FT_Parameter* params = NULL;
|
|
|
|
|
|
if ( args->flags & FT_OPEN_PARAMS )
|
|
{
|
|
num_params = args->num_params;
|
|
params = args->params;
|
|
}
|
|
|
|
error = open_face( driver, &stream, external_stream, face_index,
|
|
num_params, params, &face );
|
|
if ( !error )
|
|
goto Success;
|
|
}
|
|
else
|
|
error = FT_THROW( Invalid_Handle );
|
|
|
|
FT_Stream_Free( stream, external_stream );
|
|
goto Fail;
|
|
}
|
|
else
|
|
{
|
|
error = FT_ERR( Missing_Module );
|
|
|
|
/* check each font driver for an appropriate format */
|
|
cur = library->modules;
|
|
limit = cur + library->num_modules;
|
|
|
|
for ( ; cur < limit; cur++ )
|
|
{
|
|
/* not all modules are font drivers, so check... */
|
|
if ( FT_MODULE_IS_DRIVER( cur[0] ) )
|
|
{
|
|
FT_Int num_params = 0;
|
|
FT_Parameter* params = NULL;
|
|
|
|
|
|
driver = FT_DRIVER( cur[0] );
|
|
|
|
if ( args->flags & FT_OPEN_PARAMS )
|
|
{
|
|
num_params = args->num_params;
|
|
params = args->params;
|
|
}
|
|
|
|
error = open_face( driver, &stream, external_stream, face_index,
|
|
num_params, params, &face );
|
|
if ( !error )
|
|
goto Success;
|
|
|
|
#ifdef FT_CONFIG_OPTION_MAC_FONTS
|
|
if ( ft_strcmp( cur[0]->clazz->module_name, "truetype" ) == 0 &&
|
|
FT_ERR_EQ( error, Table_Missing ) )
|
|
{
|
|
/* TrueType but essential tables are missing */
|
|
error = FT_Stream_Seek( stream, 0 );
|
|
if ( error )
|
|
break;
|
|
|
|
error = open_face_PS_from_sfnt_stream( library,
|
|
stream,
|
|
face_index,
|
|
num_params,
|
|
params,
|
|
aface );
|
|
if ( !error )
|
|
{
|
|
FT_Stream_Free( stream, external_stream );
|
|
return error;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if ( FT_ERR_NEQ( error, Unknown_File_Format ) )
|
|
goto Fail3;
|
|
}
|
|
}
|
|
|
|
Fail3:
|
|
/* If we are on the mac, and we get an */
|
|
/* FT_Err_Invalid_Stream_Operation it may be because we have an */
|
|
/* empty data fork, so we need to check the resource fork. */
|
|
if ( FT_ERR_NEQ( error, Cannot_Open_Stream ) &&
|
|
FT_ERR_NEQ( error, Unknown_File_Format ) &&
|
|
FT_ERR_NEQ( error, Invalid_Stream_Operation ) )
|
|
goto Fail2;
|
|
|
|
#if !defined( FT_MACINTOSH ) && defined( FT_CONFIG_OPTION_MAC_FONTS )
|
|
error = load_mac_face( library, stream, face_index, aface, args );
|
|
if ( !error )
|
|
{
|
|
/* We don't want to go to Success here. We've already done that. */
|
|
/* On the other hand, if we succeeded we still need to close this */
|
|
/* stream (we opened a different stream which extracted the */
|
|
/* interesting information out of this stream here. That stream */
|
|
/* will still be open and the face will point to it). */
|
|
FT_Stream_Free( stream, external_stream );
|
|
return error;
|
|
}
|
|
|
|
if ( FT_ERR_NEQ( error, Unknown_File_Format ) )
|
|
goto Fail2;
|
|
#endif /* !FT_MACINTOSH && FT_CONFIG_OPTION_MAC_FONTS */
|
|
|
|
/* no driver is able to handle this format */
|
|
error = FT_THROW( Unknown_File_Format );
|
|
|
|
Fail2:
|
|
FT_Stream_Free( stream, external_stream );
|
|
goto Fail;
|
|
}
|
|
|
|
Success:
|
|
FT_TRACE4(( "FT_Open_Face: New face object, adding to list\n" ));
|
|
|
|
/* add the face object to its driver's list */
|
|
if ( FT_NEW( node ) )
|
|
goto Fail;
|
|
|
|
node->data = face;
|
|
/* don't assume driver is the same as face->driver, so use */
|
|
/* face->driver instead. */
|
|
FT_List_Add( &face->driver->faces_list, node );
|
|
|
|
/* now allocate a glyph slot object for the face */
|
|
FT_TRACE4(( "FT_Open_Face: Creating glyph slot\n" ));
|
|
|
|
if ( face_index >= 0 )
|
|
{
|
|
error = FT_New_GlyphSlot( face, NULL );
|
|
if ( error )
|
|
goto Fail;
|
|
|
|
/* finally, allocate a size object for the face */
|
|
{
|
|
FT_Size size;
|
|
|
|
|
|
FT_TRACE4(( "FT_Open_Face: Creating size object\n" ));
|
|
|
|
error = FT_New_Size( face, &size );
|
|
if ( error )
|
|
goto Fail;
|
|
|
|
face->size = size;
|
|
}
|
|
}
|
|
|
|
/* some checks */
|
|
|
|
if ( FT_IS_SCALABLE( face ) )
|
|
{
|
|
if ( face->height < 0 )
|
|
face->height = (FT_Short)-face->height;
|
|
|
|
if ( !FT_HAS_VERTICAL( face ) )
|
|
face->max_advance_height = (FT_Short)face->height;
|
|
}
|
|
|
|
if ( FT_HAS_FIXED_SIZES( face ) )
|
|
{
|
|
FT_Int i;
|
|
|
|
|
|
for ( i = 0; i < face->num_fixed_sizes; i++ )
|
|
{
|
|
FT_Bitmap_Size* bsize = face->available_sizes + i;
|
|
|
|
|
|
if ( bsize->height < 0 )
|
|
bsize->height = (FT_Short)-bsize->height;
|
|
if ( bsize->x_ppem < 0 )
|
|
bsize->x_ppem = (FT_Short)-bsize->x_ppem;
|
|
if ( bsize->y_ppem < 0 )
|
|
bsize->y_ppem = -bsize->y_ppem;
|
|
}
|
|
}
|
|
|
|
/* initialize internal face data */
|
|
{
|
|
FT_Face_Internal internal = face->internal;
|
|
|
|
|
|
internal->transform_matrix.xx = 0x10000L;
|
|
internal->transform_matrix.xy = 0;
|
|
internal->transform_matrix.yx = 0;
|
|
internal->transform_matrix.yy = 0x10000L;
|
|
|
|
internal->transform_delta.x = 0;
|
|
internal->transform_delta.y = 0;
|
|
|
|
internal->refcount = 1;
|
|
}
|
|
|
|
if ( aface )
|
|
*aface = face;
|
|
else
|
|
FT_Done_Face( face );
|
|
|
|
goto Exit;
|
|
|
|
Fail:
|
|
if ( node )
|
|
FT_Done_Face( face ); /* face must be in the driver's list */
|
|
else if ( face )
|
|
destroy_face( memory, face, driver );
|
|
|
|
Exit:
|
|
FT_TRACE4(( "FT_Open_Face: Return %d\n", error ));
|
|
|
|
return error;
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Attach_File( FT_Face face,
|
|
const char* filepathname )
|
|
{
|
|
FT_Open_Args open;
|
|
|
|
|
|
/* test for valid `face' delayed to `FT_Attach_Stream' */
|
|
|
|
if ( !filepathname )
|
|
return FT_THROW( Invalid_Argument );
|
|
|
|
open.stream = NULL;
|
|
open.flags = FT_OPEN_PATHNAME;
|
|
open.pathname = (char*)filepathname;
|
|
|
|
return FT_Attach_Stream( face, &open );
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Attach_Stream( FT_Face face,
|
|
FT_Open_Args* parameters )
|
|
{
|
|
FT_Stream stream;
|
|
FT_Error error;
|
|
FT_Driver driver;
|
|
|
|
FT_Driver_Class clazz;
|
|
|
|
|
|
/* test for valid `parameters' delayed to `FT_Stream_New' */
|
|
|
|
if ( !face )
|
|
return FT_THROW( Invalid_Face_Handle );
|
|
|
|
driver = face->driver;
|
|
if ( !driver )
|
|
return FT_THROW( Invalid_Driver_Handle );
|
|
|
|
error = FT_Stream_New( driver->root.library, parameters, &stream );
|
|
if ( error )
|
|
goto Exit;
|
|
|
|
/* we implement FT_Attach_Stream in each driver through the */
|
|
/* `attach_file' interface */
|
|
|
|
error = FT_ERR( Unimplemented_Feature );
|
|
clazz = driver->clazz;
|
|
if ( clazz->attach_file )
|
|
error = clazz->attach_file( face, stream );
|
|
|
|
/* close the attached stream */
|
|
FT_Stream_Free( stream,
|
|
(FT_Bool)( parameters->stream &&
|
|
( parameters->flags & FT_OPEN_STREAM ) ) );
|
|
|
|
Exit:
|
|
return error;
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Reference_Face( FT_Face face )
|
|
{
|
|
if ( !face )
|
|
return FT_THROW( Invalid_Face_Handle );
|
|
|
|
face->internal->refcount++;
|
|
|
|
return FT_Err_Ok;
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Done_Face( FT_Face face )
|
|
{
|
|
FT_Error error;
|
|
FT_Driver driver;
|
|
FT_Memory memory;
|
|
FT_ListNode node;
|
|
|
|
|
|
error = FT_ERR( Invalid_Face_Handle );
|
|
if ( face && face->driver )
|
|
{
|
|
face->internal->refcount--;
|
|
if ( face->internal->refcount > 0 )
|
|
error = FT_Err_Ok;
|
|
else
|
|
{
|
|
driver = face->driver;
|
|
memory = driver->root.memory;
|
|
|
|
/* find face in driver's list */
|
|
node = FT_List_Find( &driver->faces_list, face );
|
|
if ( node )
|
|
{
|
|
/* remove face object from the driver's list */
|
|
FT_List_Remove( &driver->faces_list, node );
|
|
FT_FREE( node );
|
|
|
|
/* now destroy the object proper */
|
|
destroy_face( memory, face, driver );
|
|
error = FT_Err_Ok;
|
|
}
|
|
}
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
|
|
/* documentation is in ftobjs.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_New_Size( FT_Face face,
|
|
FT_Size *asize )
|
|
{
|
|
FT_Error error;
|
|
FT_Memory memory;
|
|
FT_Driver driver;
|
|
FT_Driver_Class clazz;
|
|
|
|
FT_Size size = NULL;
|
|
FT_ListNode node = NULL;
|
|
|
|
|
|
if ( !face )
|
|
return FT_THROW( Invalid_Face_Handle );
|
|
|
|
if ( !asize )
|
|
return FT_THROW( Invalid_Argument );
|
|
|
|
if ( !face->driver )
|
|
return FT_THROW( Invalid_Driver_Handle );
|
|
|
|
*asize = NULL;
|
|
|
|
driver = face->driver;
|
|
clazz = driver->clazz;
|
|
memory = face->memory;
|
|
|
|
/* Allocate new size object and perform basic initialisation */
|
|
if ( FT_ALLOC( size, clazz->size_object_size ) || FT_NEW( node ) )
|
|
goto Exit;
|
|
|
|
size->face = face;
|
|
|
|
/* for now, do not use any internal fields in size objects */
|
|
size->internal = NULL;
|
|
|
|
if ( clazz->init_size )
|
|
error = clazz->init_size( size );
|
|
|
|
/* in case of success, add to the face's list */
|
|
if ( !error )
|
|
{
|
|
*asize = size;
|
|
node->data = size;
|
|
FT_List_Add( &face->sizes_list, node );
|
|
}
|
|
|
|
Exit:
|
|
if ( error )
|
|
{
|
|
FT_FREE( node );
|
|
FT_FREE( size );
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
|
|
/* documentation is in ftobjs.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Done_Size( FT_Size size )
|
|
{
|
|
FT_Error error;
|
|
FT_Driver driver;
|
|
FT_Memory memory;
|
|
FT_Face face;
|
|
FT_ListNode node;
|
|
|
|
|
|
if ( !size )
|
|
return FT_THROW( Invalid_Size_Handle );
|
|
|
|
face = size->face;
|
|
if ( !face )
|
|
return FT_THROW( Invalid_Face_Handle );
|
|
|
|
driver = face->driver;
|
|
if ( !driver )
|
|
return FT_THROW( Invalid_Driver_Handle );
|
|
|
|
memory = driver->root.memory;
|
|
|
|
error = FT_Err_Ok;
|
|
node = FT_List_Find( &face->sizes_list, size );
|
|
if ( node )
|
|
{
|
|
FT_List_Remove( &face->sizes_list, node );
|
|
FT_FREE( node );
|
|
|
|
if ( face->size == size )
|
|
{
|
|
face->size = NULL;
|
|
if ( face->sizes_list.head )
|
|
face->size = (FT_Size)(face->sizes_list.head->data);
|
|
}
|
|
|
|
destroy_size( memory, size, driver );
|
|
}
|
|
else
|
|
error = FT_THROW( Invalid_Size_Handle );
|
|
|
|
return error;
|
|
}
|
|
|
|
|
|
/* documentation is in ftobjs.h */
|
|
|
|
FT_BASE_DEF( FT_Error )
|
|
FT_Match_Size( FT_Face face,
|
|
FT_Size_Request req,
|
|
FT_Bool ignore_width,
|
|
FT_ULong* size_index )
|
|
{
|
|
FT_Int i;
|
|
FT_Long w, h;
|
|
|
|
|
|
if ( !FT_HAS_FIXED_SIZES( face ) )
|
|
return FT_THROW( Invalid_Face_Handle );
|
|
|
|
/* FT_Bitmap_Size doesn't provide enough info... */
|
|
if ( req->type != FT_SIZE_REQUEST_TYPE_NOMINAL )
|
|
return FT_THROW( Unimplemented_Feature );
|
|
|
|
w = FT_REQUEST_WIDTH ( req );
|
|
h = FT_REQUEST_HEIGHT( req );
|
|
|
|
if ( req->width && !req->height )
|
|
h = w;
|
|
else if ( !req->width && req->height )
|
|
w = h;
|
|
|
|
w = FT_PIX_ROUND( w );
|
|
h = FT_PIX_ROUND( h );
|
|
|
|
for ( i = 0; i < face->num_fixed_sizes; i++ )
|
|
{
|
|
FT_Bitmap_Size* bsize = face->available_sizes + i;
|
|
|
|
|
|
if ( h != FT_PIX_ROUND( bsize->y_ppem ) )
|
|
continue;
|
|
|
|
if ( w == FT_PIX_ROUND( bsize->x_ppem ) || ignore_width )
|
|
{
|
|
FT_TRACE3(( "FT_Match_Size: bitmap strike %d matches\n", i ));
|
|
|
|
if ( size_index )
|
|
*size_index = (FT_ULong)i;
|
|
|
|
return FT_Err_Ok;
|
|
}
|
|
}
|
|
|
|
return FT_THROW( Invalid_Pixel_Size );
|
|
}
|
|
|
|
|
|
/* documentation is in ftobjs.h */
|
|
|
|
FT_BASE_DEF( void )
|
|
ft_synthesize_vertical_metrics( FT_Glyph_Metrics* metrics,
|
|
FT_Pos advance )
|
|
{
|
|
FT_Pos height = metrics->height;
|
|
|
|
|
|
/* compensate for glyph with bbox above/below the baseline */
|
|
if ( metrics->horiBearingY < 0 )
|
|
{
|
|
if ( height < metrics->horiBearingY )
|
|
height = metrics->horiBearingY;
|
|
}
|
|
else if ( metrics->horiBearingY > 0 )
|
|
height -= metrics->horiBearingY;
|
|
|
|
/* the factor 1.2 is a heuristical value */
|
|
if ( !advance )
|
|
advance = height * 12 / 10;
|
|
|
|
metrics->vertBearingX = metrics->horiBearingX - metrics->horiAdvance / 2;
|
|
metrics->vertBearingY = ( advance - height ) / 2;
|
|
metrics->vertAdvance = advance;
|
|
}
|
|
|
|
|
|
static void
|
|
ft_recompute_scaled_metrics( FT_Face face,
|
|
FT_Size_Metrics* metrics )
|
|
{
|
|
/* Compute root ascender, descender, test height, and max_advance */
|
|
|
|
#ifdef GRID_FIT_METRICS
|
|
metrics->ascender = FT_PIX_CEIL( FT_MulFix( face->ascender,
|
|
metrics->y_scale ) );
|
|
|
|
metrics->descender = FT_PIX_FLOOR( FT_MulFix( face->descender,
|
|
metrics->y_scale ) );
|
|
|
|
metrics->height = FT_PIX_ROUND( FT_MulFix( face->height,
|
|
metrics->y_scale ) );
|
|
|
|
metrics->max_advance = FT_PIX_ROUND( FT_MulFix( face->max_advance_width,
|
|
metrics->x_scale ) );
|
|
#else /* !GRID_FIT_METRICS */
|
|
metrics->ascender = FT_MulFix( face->ascender,
|
|
metrics->y_scale );
|
|
|
|
metrics->descender = FT_MulFix( face->descender,
|
|
metrics->y_scale );
|
|
|
|
metrics->height = FT_MulFix( face->height,
|
|
metrics->y_scale );
|
|
|
|
metrics->max_advance = FT_MulFix( face->max_advance_width,
|
|
metrics->x_scale );
|
|
#endif /* !GRID_FIT_METRICS */
|
|
}
|
|
|
|
|
|
FT_BASE_DEF( void )
|
|
FT_Select_Metrics( FT_Face face,
|
|
FT_ULong strike_index )
|
|
{
|
|
FT_Size_Metrics* metrics;
|
|
FT_Bitmap_Size* bsize;
|
|
|
|
|
|
metrics = &face->size->metrics;
|
|
bsize = face->available_sizes + strike_index;
|
|
|
|
metrics->x_ppem = (FT_UShort)( ( bsize->x_ppem + 32 ) >> 6 );
|
|
metrics->y_ppem = (FT_UShort)( ( bsize->y_ppem + 32 ) >> 6 );
|
|
|
|
if ( FT_IS_SCALABLE( face ) )
|
|
{
|
|
metrics->x_scale = FT_DivFix( bsize->x_ppem,
|
|
face->units_per_EM );
|
|
metrics->y_scale = FT_DivFix( bsize->y_ppem,
|
|
face->units_per_EM );
|
|
|
|
ft_recompute_scaled_metrics( face, metrics );
|
|
}
|
|
else
|
|
{
|
|
metrics->x_scale = 1L << 16;
|
|
metrics->y_scale = 1L << 16;
|
|
metrics->ascender = bsize->y_ppem;
|
|
metrics->descender = 0;
|
|
metrics->height = bsize->height << 6;
|
|
metrics->max_advance = bsize->x_ppem;
|
|
}
|
|
|
|
FT_TRACE5(( "FT_Select_Metrics:\n" ));
|
|
FT_TRACE5(( " x scale: %d (%f)\n",
|
|
metrics->x_scale, metrics->x_scale / 65536.0 ));
|
|
FT_TRACE5(( " y scale: %d (%f)\n",
|
|
metrics->y_scale, metrics->y_scale / 65536.0 ));
|
|
FT_TRACE5(( " ascender: %f\n", metrics->ascender / 64.0 ));
|
|
FT_TRACE5(( " descender: %f\n", metrics->descender / 64.0 ));
|
|
FT_TRACE5(( " height: %f\n", metrics->height / 64.0 ));
|
|
FT_TRACE5(( " max advance: %f\n", metrics->max_advance / 64.0 ));
|
|
FT_TRACE5(( " x ppem: %d\n", metrics->x_ppem ));
|
|
FT_TRACE5(( " y ppem: %d\n", metrics->y_ppem ));
|
|
}
|
|
|
|
|
|
FT_BASE_DEF( void )
|
|
FT_Request_Metrics( FT_Face face,
|
|
FT_Size_Request req )
|
|
{
|
|
FT_Size_Metrics* metrics;
|
|
|
|
|
|
metrics = &face->size->metrics;
|
|
|
|
if ( FT_IS_SCALABLE( face ) )
|
|
{
|
|
FT_Long w = 0, h = 0, scaled_w = 0, scaled_h = 0;
|
|
|
|
|
|
switch ( req->type )
|
|
{
|
|
case FT_SIZE_REQUEST_TYPE_NOMINAL:
|
|
w = h = face->units_per_EM;
|
|
break;
|
|
|
|
case FT_SIZE_REQUEST_TYPE_REAL_DIM:
|
|
w = h = face->ascender - face->descender;
|
|
break;
|
|
|
|
case FT_SIZE_REQUEST_TYPE_BBOX:
|
|
w = face->bbox.xMax - face->bbox.xMin;
|
|
h = face->bbox.yMax - face->bbox.yMin;
|
|
break;
|
|
|
|
case FT_SIZE_REQUEST_TYPE_CELL:
|
|
w = face->max_advance_width;
|
|
h = face->ascender - face->descender;
|
|
break;
|
|
|
|
case FT_SIZE_REQUEST_TYPE_SCALES:
|
|
metrics->x_scale = (FT_Fixed)req->width;
|
|
metrics->y_scale = (FT_Fixed)req->height;
|
|
if ( !metrics->x_scale )
|
|
metrics->x_scale = metrics->y_scale;
|
|
else if ( !metrics->y_scale )
|
|
metrics->y_scale = metrics->x_scale;
|
|
goto Calculate_Ppem;
|
|
|
|
case FT_SIZE_REQUEST_TYPE_MAX:
|
|
break;
|
|
}
|
|
|
|
/* to be on the safe side */
|
|
if ( w < 0 )
|
|
w = -w;
|
|
|
|
if ( h < 0 )
|
|
h = -h;
|
|
|
|
scaled_w = FT_REQUEST_WIDTH ( req );
|
|
scaled_h = FT_REQUEST_HEIGHT( req );
|
|
|
|
/* determine scales */
|
|
if ( req->width )
|
|
{
|
|
metrics->x_scale = FT_DivFix( scaled_w, w );
|
|
|
|
if ( req->height )
|
|
{
|
|
metrics->y_scale = FT_DivFix( scaled_h, h );
|
|
|
|
if ( req->type == FT_SIZE_REQUEST_TYPE_CELL )
|
|
{
|
|
if ( metrics->y_scale > metrics->x_scale )
|
|
metrics->y_scale = metrics->x_scale;
|
|
else
|
|
metrics->x_scale = metrics->y_scale;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
metrics->y_scale = metrics->x_scale;
|
|
scaled_h = FT_MulDiv( scaled_w, h, w );
|
|
}
|
|
}
|
|
else
|
|
{
|
|
metrics->x_scale = metrics->y_scale = FT_DivFix( scaled_h, h );
|
|
scaled_w = FT_MulDiv( scaled_h, w, h );
|
|
}
|
|
|
|
Calculate_Ppem:
|
|
/* calculate the ppems */
|
|
if ( req->type != FT_SIZE_REQUEST_TYPE_NOMINAL )
|
|
{
|
|
scaled_w = FT_MulFix( face->units_per_EM, metrics->x_scale );
|
|
scaled_h = FT_MulFix( face->units_per_EM, metrics->y_scale );
|
|
}
|
|
|
|
metrics->x_ppem = (FT_UShort)( ( scaled_w + 32 ) >> 6 );
|
|
metrics->y_ppem = (FT_UShort)( ( scaled_h + 32 ) >> 6 );
|
|
|
|
ft_recompute_scaled_metrics( face, metrics );
|
|
}
|
|
else
|
|
{
|
|
FT_ZERO( metrics );
|
|
metrics->x_scale = 1L << 16;
|
|
metrics->y_scale = 1L << 16;
|
|
}
|
|
|
|
FT_TRACE5(( "FT_Request_Metrics:\n" ));
|
|
FT_TRACE5(( " x scale: %d (%f)\n",
|
|
metrics->x_scale, metrics->x_scale / 65536.0 ));
|
|
FT_TRACE5(( " y scale: %d (%f)\n",
|
|
metrics->y_scale, metrics->y_scale / 65536.0 ));
|
|
FT_TRACE5(( " ascender: %f\n", metrics->ascender / 64.0 ));
|
|
FT_TRACE5(( " descender: %f\n", metrics->descender / 64.0 ));
|
|
FT_TRACE5(( " height: %f\n", metrics->height / 64.0 ));
|
|
FT_TRACE5(( " max advance: %f\n", metrics->max_advance / 64.0 ));
|
|
FT_TRACE5(( " x ppem: %d\n", metrics->x_ppem ));
|
|
FT_TRACE5(( " y ppem: %d\n", metrics->y_ppem ));
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Select_Size( FT_Face face,
|
|
FT_Int strike_index )
|
|
{
|
|
FT_Driver_Class clazz;
|
|
|
|
|
|
if ( !face || !FT_HAS_FIXED_SIZES( face ) )
|
|
return FT_THROW( Invalid_Face_Handle );
|
|
|
|
if ( strike_index < 0 || strike_index >= face->num_fixed_sizes )
|
|
return FT_THROW( Invalid_Argument );
|
|
|
|
clazz = face->driver->clazz;
|
|
|
|
if ( clazz->select_size )
|
|
{
|
|
FT_Error error;
|
|
|
|
|
|
error = clazz->select_size( face->size, (FT_ULong)strike_index );
|
|
|
|
#ifdef FT_DEBUG_LEVEL_TRACE
|
|
{
|
|
FT_Size_Metrics* metrics = &face->size->metrics;
|
|
|
|
|
|
FT_TRACE5(( "FT_Select_Size (font driver's `select_size'):\n" ));
|
|
FT_TRACE5(( " x scale: %d (%f)\n",
|
|
metrics->x_scale, metrics->x_scale / 65536.0 ));
|
|
FT_TRACE5(( " y scale: %d (%f)\n",
|
|
metrics->y_scale, metrics->y_scale / 65536.0 ));
|
|
FT_TRACE5(( " ascender: %f\n", metrics->ascender / 64.0 ));
|
|
FT_TRACE5(( " descender: %f\n", metrics->descender / 64.0 ));
|
|
FT_TRACE5(( " height: %f\n", metrics->height / 64.0 ));
|
|
FT_TRACE5(( " max advance: %f\n", metrics->max_advance / 64.0 ));
|
|
FT_TRACE5(( " x ppem: %d\n", metrics->x_ppem ));
|
|
FT_TRACE5(( " y ppem: %d\n", metrics->y_ppem ));
|
|
}
|
|
#endif
|
|
|
|
return error;
|
|
}
|
|
|
|
FT_Select_Metrics( face, (FT_ULong)strike_index );
|
|
|
|
return FT_Err_Ok;
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Request_Size( FT_Face face,
|
|
FT_Size_Request req )
|
|
{
|
|
FT_Driver_Class clazz;
|
|
FT_ULong strike_index;
|
|
|
|
|
|
if ( !face )
|
|
return FT_THROW( Invalid_Face_Handle );
|
|
|
|
if ( !req || req->width < 0 || req->height < 0 ||
|
|
req->type >= FT_SIZE_REQUEST_TYPE_MAX )
|
|
return FT_THROW( Invalid_Argument );
|
|
|
|
clazz = face->driver->clazz;
|
|
|
|
if ( clazz->request_size )
|
|
{
|
|
FT_Error error;
|
|
|
|
|
|
error = clazz->request_size( face->size, req );
|
|
|
|
#ifdef FT_DEBUG_LEVEL_TRACE
|
|
{
|
|
FT_Size_Metrics* metrics = &face->size->metrics;
|
|
|
|
|
|
FT_TRACE5(( "FT_Request_Size (font driver's `request_size'):\n" ));
|
|
FT_TRACE5(( " x scale: %d (%f)\n",
|
|
metrics->x_scale, metrics->x_scale / 65536.0 ));
|
|
FT_TRACE5(( " y scale: %d (%f)\n",
|
|
metrics->y_scale, metrics->y_scale / 65536.0 ));
|
|
FT_TRACE5(( " ascender: %f\n", metrics->ascender / 64.0 ));
|
|
FT_TRACE5(( " descender: %f\n", metrics->descender / 64.0 ));
|
|
FT_TRACE5(( " height: %f\n", metrics->height / 64.0 ));
|
|
FT_TRACE5(( " max advance: %f\n", metrics->max_advance / 64.0 ));
|
|
FT_TRACE5(( " x ppem: %d\n", metrics->x_ppem ));
|
|
FT_TRACE5(( " y ppem: %d\n", metrics->y_ppem ));
|
|
}
|
|
#endif
|
|
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* The reason that a driver doesn't have `request_size' defined is
|
|
* either that the scaling here suffices or that the supported formats
|
|
* are bitmap-only and size matching is not implemented.
|
|
*
|
|
* In the latter case, a simple size matching is done.
|
|
*/
|
|
if ( !FT_IS_SCALABLE( face ) && FT_HAS_FIXED_SIZES( face ) )
|
|
{
|
|
FT_Error error;
|
|
|
|
|
|
error = FT_Match_Size( face, req, 0, &strike_index );
|
|
if ( error )
|
|
return error;
|
|
|
|
return FT_Select_Size( face, (FT_Int)strike_index );
|
|
}
|
|
|
|
FT_Request_Metrics( face, req );
|
|
|
|
return FT_Err_Ok;
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( 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 )
|
|
{
|
|
FT_Size_RequestRec req;
|
|
|
|
|
|
/* check of `face' delayed to `FT_Request_Size' */
|
|
|
|
if ( !char_width )
|
|
char_width = char_height;
|
|
else if ( !char_height )
|
|
char_height = char_width;
|
|
|
|
if ( !horz_resolution )
|
|
horz_resolution = vert_resolution;
|
|
else if ( !vert_resolution )
|
|
vert_resolution = horz_resolution;
|
|
|
|
if ( char_width < 1 * 64 )
|
|
char_width = 1 * 64;
|
|
if ( char_height < 1 * 64 )
|
|
char_height = 1 * 64;
|
|
|
|
if ( !horz_resolution )
|
|
horz_resolution = vert_resolution = 72;
|
|
|
|
req.type = FT_SIZE_REQUEST_TYPE_NOMINAL;
|
|
req.width = char_width;
|
|
req.height = char_height;
|
|
req.horiResolution = horz_resolution;
|
|
req.vertResolution = vert_resolution;
|
|
|
|
return FT_Request_Size( face, &req );
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Set_Pixel_Sizes( FT_Face face,
|
|
FT_UInt pixel_width,
|
|
FT_UInt pixel_height )
|
|
{
|
|
FT_Size_RequestRec req;
|
|
|
|
|
|
/* check of `face' delayed to `FT_Request_Size' */
|
|
|
|
if ( pixel_width == 0 )
|
|
pixel_width = pixel_height;
|
|
else if ( pixel_height == 0 )
|
|
pixel_height = pixel_width;
|
|
|
|
if ( pixel_width < 1 )
|
|
pixel_width = 1;
|
|
if ( pixel_height < 1 )
|
|
pixel_height = 1;
|
|
|
|
/* use `>=' to avoid potential compiler warning on 16bit platforms */
|
|
if ( pixel_width >= 0xFFFFU )
|
|
pixel_width = 0xFFFFU;
|
|
if ( pixel_height >= 0xFFFFU )
|
|
pixel_height = 0xFFFFU;
|
|
|
|
req.type = FT_SIZE_REQUEST_TYPE_NOMINAL;
|
|
req.width = (FT_Long)( pixel_width << 6 );
|
|
req.height = (FT_Long)( pixel_height << 6 );
|
|
req.horiResolution = 0;
|
|
req.vertResolution = 0;
|
|
|
|
return FT_Request_Size( face, &req );
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Get_Kerning( FT_Face face,
|
|
FT_UInt left_glyph,
|
|
FT_UInt right_glyph,
|
|
FT_UInt kern_mode,
|
|
FT_Vector *akerning )
|
|
{
|
|
FT_Error error = FT_Err_Ok;
|
|
FT_Driver driver;
|
|
|
|
|
|
if ( !face )
|
|
return FT_THROW( Invalid_Face_Handle );
|
|
|
|
if ( !akerning )
|
|
return FT_THROW( Invalid_Argument );
|
|
|
|
driver = face->driver;
|
|
|
|
akerning->x = 0;
|
|
akerning->y = 0;
|
|
|
|
if ( driver->clazz->get_kerning )
|
|
{
|
|
error = driver->clazz->get_kerning( face,
|
|
left_glyph,
|
|
right_glyph,
|
|
akerning );
|
|
if ( !error )
|
|
{
|
|
if ( kern_mode != FT_KERNING_UNSCALED )
|
|
{
|
|
akerning->x = FT_MulFix( akerning->x, face->size->metrics.x_scale );
|
|
akerning->y = FT_MulFix( akerning->y, face->size->metrics.y_scale );
|
|
|
|
if ( kern_mode != FT_KERNING_UNFITTED )
|
|
{
|
|
FT_Pos orig_x = akerning->x;
|
|
FT_Pos orig_y = akerning->y;
|
|
|
|
|
|
/* we scale down kerning values for small ppem values */
|
|
/* to avoid that rounding makes them too big. */
|
|
/* `25' has been determined heuristically. */
|
|
if ( face->size->metrics.x_ppem < 25 )
|
|
akerning->x = FT_MulDiv( orig_x,
|
|
face->size->metrics.x_ppem, 25 );
|
|
if ( face->size->metrics.y_ppem < 25 )
|
|
akerning->y = FT_MulDiv( orig_y,
|
|
face->size->metrics.y_ppem, 25 );
|
|
|
|
akerning->x = FT_PIX_ROUND( akerning->x );
|
|
akerning->y = FT_PIX_ROUND( akerning->y );
|
|
|
|
#ifdef FT_DEBUG_LEVEL_TRACE
|
|
{
|
|
FT_Pos orig_x_rounded = FT_PIX_ROUND( orig_x );
|
|
FT_Pos orig_y_rounded = FT_PIX_ROUND( orig_y );
|
|
|
|
|
|
if ( akerning->x != orig_x_rounded ||
|
|
akerning->y != orig_y_rounded )
|
|
FT_TRACE5(( "FT_Get_Kerning: horizontal kerning"
|
|
" (%d, %d) scaled down to (%d, %d) pixels\n",
|
|
orig_x_rounded / 64, orig_y_rounded / 64,
|
|
akerning->x / 64, akerning->y / 64 ));
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Get_Track_Kerning( FT_Face face,
|
|
FT_Fixed point_size,
|
|
FT_Int degree,
|
|
FT_Fixed* akerning )
|
|
{
|
|
FT_Service_Kerning service;
|
|
FT_Error error = FT_Err_Ok;
|
|
|
|
|
|
if ( !face )
|
|
return FT_THROW( Invalid_Face_Handle );
|
|
|
|
if ( !akerning )
|
|
return FT_THROW( Invalid_Argument );
|
|
|
|
FT_FACE_FIND_SERVICE( face, service, KERNING );
|
|
if ( !service )
|
|
return FT_THROW( Unimplemented_Feature );
|
|
|
|
error = service->get_track( face,
|
|
point_size,
|
|
degree,
|
|
akerning );
|
|
|
|
return error;
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Select_Charmap( FT_Face face,
|
|
FT_Encoding encoding )
|
|
{
|
|
FT_CharMap* cur;
|
|
FT_CharMap* limit;
|
|
|
|
|
|
if ( !face )
|
|
return FT_THROW( Invalid_Face_Handle );
|
|
|
|
if ( encoding == FT_ENCODING_NONE )
|
|
return FT_THROW( Invalid_Argument );
|
|
|
|
/* FT_ENCODING_UNICODE is special. We try to find the `best' Unicode */
|
|
/* charmap available, i.e., one with UCS-4 characters, if possible. */
|
|
/* */
|
|
/* This is done by find_unicode_charmap() above, to share code. */
|
|
if ( encoding == FT_ENCODING_UNICODE )
|
|
return find_unicode_charmap( face );
|
|
|
|
cur = face->charmaps;
|
|
if ( !cur )
|
|
return FT_THROW( Invalid_CharMap_Handle );
|
|
|
|
limit = cur + face->num_charmaps;
|
|
|
|
for ( ; cur < limit; cur++ )
|
|
{
|
|
if ( cur[0]->encoding == encoding )
|
|
{
|
|
face->charmap = cur[0];
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return FT_THROW( Invalid_Argument );
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Set_Charmap( FT_Face face,
|
|
FT_CharMap charmap )
|
|
{
|
|
FT_CharMap* cur;
|
|
FT_CharMap* limit;
|
|
|
|
|
|
if ( !face )
|
|
return FT_THROW( Invalid_Face_Handle );
|
|
|
|
cur = face->charmaps;
|
|
if ( !cur || !charmap )
|
|
return FT_THROW( Invalid_CharMap_Handle );
|
|
|
|
if ( FT_Get_CMap_Format( charmap ) == 14 )
|
|
return FT_THROW( Invalid_Argument );
|
|
|
|
limit = cur + face->num_charmaps;
|
|
|
|
for ( ; cur < limit; cur++ )
|
|
{
|
|
if ( cur[0] == charmap )
|
|
{
|
|
face->charmap = cur[0];
|
|
return FT_Err_Ok;
|
|
}
|
|
}
|
|
|
|
return FT_THROW( Invalid_Argument );
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_Int )
|
|
FT_Get_Charmap_Index( FT_CharMap charmap )
|
|
{
|
|
FT_Int i;
|
|
|
|
|
|
if ( !charmap || !charmap->face )
|
|
return -1;
|
|
|
|
for ( i = 0; i < charmap->face->num_charmaps; i++ )
|
|
if ( charmap->face->charmaps[i] == charmap )
|
|
break;
|
|
|
|
FT_ASSERT( i < charmap->face->num_charmaps );
|
|
|
|
return i;
|
|
}
|
|
|
|
|
|
static void
|
|
ft_cmap_done_internal( FT_CMap cmap )
|
|
{
|
|
FT_CMap_Class clazz = cmap->clazz;
|
|
FT_Face face = cmap->charmap.face;
|
|
FT_Memory memory = FT_FACE_MEMORY( face );
|
|
|
|
|
|
if ( clazz->done )
|
|
clazz->done( cmap );
|
|
|
|
FT_FREE( cmap );
|
|
}
|
|
|
|
|
|
FT_BASE_DEF( void )
|
|
FT_CMap_Done( FT_CMap cmap )
|
|
{
|
|
if ( cmap )
|
|
{
|
|
FT_Face face = cmap->charmap.face;
|
|
FT_Memory memory = FT_FACE_MEMORY( face );
|
|
FT_Error error;
|
|
FT_Int i, j;
|
|
|
|
|
|
for ( i = 0; i < face->num_charmaps; i++ )
|
|
{
|
|
if ( (FT_CMap)face->charmaps[i] == cmap )
|
|
{
|
|
FT_CharMap last_charmap = face->charmaps[face->num_charmaps - 1];
|
|
|
|
|
|
if ( FT_RENEW_ARRAY( face->charmaps,
|
|
face->num_charmaps,
|
|
face->num_charmaps - 1 ) )
|
|
return;
|
|
|
|
/* remove it from our list of charmaps */
|
|
for ( j = i + 1; j < face->num_charmaps; j++ )
|
|
{
|
|
if ( j == face->num_charmaps - 1 )
|
|
face->charmaps[j - 1] = last_charmap;
|
|
else
|
|
face->charmaps[j - 1] = face->charmaps[j];
|
|
}
|
|
|
|
face->num_charmaps--;
|
|
|
|
if ( (FT_CMap)face->charmap == cmap )
|
|
face->charmap = NULL;
|
|
|
|
ft_cmap_done_internal( cmap );
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
FT_BASE_DEF( FT_Error )
|
|
FT_CMap_New( FT_CMap_Class clazz,
|
|
FT_Pointer init_data,
|
|
FT_CharMap charmap,
|
|
FT_CMap *acmap )
|
|
{
|
|
FT_Error error = FT_Err_Ok;
|
|
FT_Face face;
|
|
FT_Memory memory;
|
|
FT_CMap cmap = NULL;
|
|
|
|
|
|
if ( clazz == NULL || charmap == NULL || charmap->face == NULL )
|
|
return FT_THROW( Invalid_Argument );
|
|
|
|
face = charmap->face;
|
|
memory = FT_FACE_MEMORY( face );
|
|
|
|
if ( !FT_ALLOC( cmap, clazz->size ) )
|
|
{
|
|
cmap->charmap = *charmap;
|
|
cmap->clazz = clazz;
|
|
|
|
if ( clazz->init )
|
|
{
|
|
error = clazz->init( cmap, init_data );
|
|
if ( error )
|
|
goto Fail;
|
|
}
|
|
|
|
/* add it to our list of charmaps */
|
|
if ( FT_RENEW_ARRAY( face->charmaps,
|
|
face->num_charmaps,
|
|
face->num_charmaps + 1 ) )
|
|
goto Fail;
|
|
|
|
face->charmaps[face->num_charmaps++] = (FT_CharMap)cmap;
|
|
}
|
|
|
|
Exit:
|
|
if ( acmap )
|
|
*acmap = cmap;
|
|
|
|
return error;
|
|
|
|
Fail:
|
|
ft_cmap_done_internal( cmap );
|
|
cmap = NULL;
|
|
goto Exit;
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_UInt )
|
|
FT_Get_Char_Index( FT_Face face,
|
|
FT_ULong charcode )
|
|
{
|
|
FT_UInt result = 0;
|
|
|
|
|
|
if ( face && face->charmap )
|
|
{
|
|
FT_CMap cmap = FT_CMAP( face->charmap );
|
|
|
|
|
|
if ( charcode > 0xFFFFFFFFUL )
|
|
{
|
|
FT_TRACE1(( "FT_Get_Char_Index: too large charcode" ));
|
|
FT_TRACE1(( " 0x%x is truncated\n", charcode ));
|
|
}
|
|
|
|
result = cmap->clazz->char_index( cmap, (FT_UInt32)charcode );
|
|
if ( result >= (FT_UInt)face->num_glyphs )
|
|
result = 0;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_ULong )
|
|
FT_Get_First_Char( FT_Face face,
|
|
FT_UInt *agindex )
|
|
{
|
|
FT_ULong result = 0;
|
|
FT_UInt gindex = 0;
|
|
|
|
|
|
/* only do something if we have a charmap, and we have glyphs at all */
|
|
if ( face && face->charmap && face->num_glyphs )
|
|
{
|
|
gindex = FT_Get_Char_Index( face, 0 );
|
|
if ( gindex == 0 )
|
|
result = FT_Get_Next_Char( face, 0, &gindex );
|
|
}
|
|
|
|
if ( agindex )
|
|
*agindex = gindex;
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_ULong )
|
|
FT_Get_Next_Char( FT_Face face,
|
|
FT_ULong charcode,
|
|
FT_UInt *agindex )
|
|
{
|
|
FT_ULong result = 0;
|
|
FT_UInt gindex = 0;
|
|
|
|
|
|
if ( face && face->charmap && face->num_glyphs )
|
|
{
|
|
FT_UInt32 code = (FT_UInt32)charcode;
|
|
FT_CMap cmap = FT_CMAP( face->charmap );
|
|
|
|
|
|
do
|
|
{
|
|
gindex = cmap->clazz->char_next( cmap, &code );
|
|
|
|
} while ( gindex >= (FT_UInt)face->num_glyphs );
|
|
|
|
result = ( gindex == 0 ) ? 0 : code;
|
|
}
|
|
|
|
if ( agindex )
|
|
*agindex = gindex;
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_UInt )
|
|
FT_Face_GetCharVariantIndex( FT_Face face,
|
|
FT_ULong charcode,
|
|
FT_ULong variantSelector )
|
|
{
|
|
FT_UInt result = 0;
|
|
|
|
|
|
if ( face &&
|
|
face->charmap &&
|
|
face->charmap->encoding == FT_ENCODING_UNICODE )
|
|
{
|
|
FT_CharMap charmap = find_variant_selector_charmap( face );
|
|
FT_CMap ucmap = FT_CMAP( face->charmap );
|
|
|
|
|
|
if ( charmap != NULL )
|
|
{
|
|
FT_CMap vcmap = FT_CMAP( charmap );
|
|
|
|
|
|
if ( charcode > 0xFFFFFFFFUL )
|
|
{
|
|
FT_TRACE1(( "FT_Get_Char_Index: too large charcode" ));
|
|
FT_TRACE1(( " 0x%x is truncated\n", charcode ));
|
|
}
|
|
if ( variantSelector > 0xFFFFFFFFUL )
|
|
{
|
|
FT_TRACE1(( "FT_Get_Char_Index: too large variantSelector" ));
|
|
FT_TRACE1(( " 0x%x is truncated\n", variantSelector ));
|
|
}
|
|
|
|
result = vcmap->clazz->char_var_index( vcmap, ucmap,
|
|
(FT_UInt32)charcode,
|
|
(FT_UInt32)variantSelector );
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_Int )
|
|
FT_Face_GetCharVariantIsDefault( FT_Face face,
|
|
FT_ULong charcode,
|
|
FT_ULong variantSelector )
|
|
{
|
|
FT_Int result = -1;
|
|
|
|
|
|
if ( face )
|
|
{
|
|
FT_CharMap charmap = find_variant_selector_charmap( face );
|
|
|
|
|
|
if ( charmap != NULL )
|
|
{
|
|
FT_CMap vcmap = FT_CMAP( charmap );
|
|
|
|
|
|
if ( charcode > 0xFFFFFFFFUL )
|
|
{
|
|
FT_TRACE1(( "FT_Get_Char_Index: too large charcode" ));
|
|
FT_TRACE1(( " 0x%x is truncated\n", charcode ));
|
|
}
|
|
if ( variantSelector > 0xFFFFFFFFUL )
|
|
{
|
|
FT_TRACE1(( "FT_Get_Char_Index: too large variantSelector" ));
|
|
FT_TRACE1(( " 0x%x is truncated\n", variantSelector ));
|
|
}
|
|
|
|
result = vcmap->clazz->char_var_default( vcmap,
|
|
(FT_UInt32)charcode,
|
|
(FT_UInt32)variantSelector );
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_UInt32* )
|
|
FT_Face_GetVariantSelectors( FT_Face face )
|
|
{
|
|
FT_UInt32 *result = NULL;
|
|
|
|
|
|
if ( face )
|
|
{
|
|
FT_CharMap charmap = find_variant_selector_charmap( face );
|
|
|
|
|
|
if ( charmap != NULL )
|
|
{
|
|
FT_CMap vcmap = FT_CMAP( charmap );
|
|
FT_Memory memory = FT_FACE_MEMORY( face );
|
|
|
|
|
|
result = vcmap->clazz->variant_list( vcmap, memory );
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_UInt32* )
|
|
FT_Face_GetVariantsOfChar( FT_Face face,
|
|
FT_ULong charcode )
|
|
{
|
|
FT_UInt32 *result = NULL;
|
|
|
|
|
|
if ( face )
|
|
{
|
|
FT_CharMap charmap = find_variant_selector_charmap( face );
|
|
|
|
|
|
if ( charmap != NULL )
|
|
{
|
|
FT_CMap vcmap = FT_CMAP( charmap );
|
|
FT_Memory memory = FT_FACE_MEMORY( face );
|
|
|
|
|
|
if ( charcode > 0xFFFFFFFFUL )
|
|
{
|
|
FT_TRACE1(( "FT_Get_Char_Index: too large charcode" ));
|
|
FT_TRACE1(( " 0x%x is truncated\n", charcode ));
|
|
}
|
|
|
|
result = vcmap->clazz->charvariant_list( vcmap, memory,
|
|
(FT_UInt32)charcode );
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_UInt32* )
|
|
FT_Face_GetCharsOfVariant( FT_Face face,
|
|
FT_ULong variantSelector )
|
|
{
|
|
FT_UInt32 *result = NULL;
|
|
|
|
|
|
if ( face )
|
|
{
|
|
FT_CharMap charmap = find_variant_selector_charmap( face );
|
|
|
|
|
|
if ( charmap != NULL )
|
|
{
|
|
FT_CMap vcmap = FT_CMAP( charmap );
|
|
FT_Memory memory = FT_FACE_MEMORY( face );
|
|
|
|
|
|
if ( variantSelector > 0xFFFFFFFFUL )
|
|
{
|
|
FT_TRACE1(( "FT_Get_Char_Index: too large variantSelector" ));
|
|
FT_TRACE1(( " 0x%x is truncated\n", variantSelector ));
|
|
}
|
|
|
|
result = vcmap->clazz->variantchar_list( vcmap, memory,
|
|
(FT_UInt32)variantSelector );
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_UInt )
|
|
FT_Get_Name_Index( FT_Face face,
|
|
FT_String* glyph_name )
|
|
{
|
|
FT_UInt result = 0;
|
|
|
|
|
|
if ( face &&
|
|
FT_HAS_GLYPH_NAMES( face ) &&
|
|
glyph_name )
|
|
{
|
|
FT_Service_GlyphDict service;
|
|
|
|
|
|
FT_FACE_LOOKUP_SERVICE( face,
|
|
service,
|
|
GLYPH_DICT );
|
|
|
|
if ( service && service->name_index )
|
|
result = service->name_index( face, glyph_name );
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Get_Glyph_Name( FT_Face face,
|
|
FT_UInt glyph_index,
|
|
FT_Pointer buffer,
|
|
FT_UInt buffer_max )
|
|
{
|
|
FT_Error error;
|
|
FT_Service_GlyphDict service;
|
|
|
|
|
|
if ( !face )
|
|
return FT_THROW( Invalid_Face_Handle );
|
|
|
|
if ( !buffer || buffer_max == 0 )
|
|
return FT_THROW( Invalid_Argument );
|
|
|
|
/* clean up buffer */
|
|
((FT_Byte*)buffer)[0] = '\0';
|
|
|
|
if ( (FT_Long)glyph_index >= face->num_glyphs )
|
|
return FT_THROW( Invalid_Glyph_Index );
|
|
|
|
if ( !FT_HAS_GLYPH_NAMES( face ) )
|
|
return FT_THROW( Invalid_Argument );
|
|
|
|
FT_FACE_LOOKUP_SERVICE( face, service, GLYPH_DICT );
|
|
if ( service && service->get_name )
|
|
error = service->get_name( face, glyph_index, buffer, buffer_max );
|
|
else
|
|
error = FT_THROW( Invalid_Argument );
|
|
|
|
return error;
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( const char* )
|
|
FT_Get_Postscript_Name( FT_Face face )
|
|
{
|
|
const char* result = NULL;
|
|
|
|
|
|
if ( !face )
|
|
goto Exit;
|
|
|
|
if ( !result )
|
|
{
|
|
FT_Service_PsFontName service;
|
|
|
|
|
|
FT_FACE_LOOKUP_SERVICE( face,
|
|
service,
|
|
POSTSCRIPT_FONT_NAME );
|
|
|
|
if ( service && service->get_ps_font_name )
|
|
result = service->get_ps_font_name( face );
|
|
}
|
|
|
|
Exit:
|
|
return result;
|
|
}
|
|
|
|
|
|
/* documentation is in tttables.h */
|
|
|
|
FT_EXPORT_DEF( void* )
|
|
FT_Get_Sfnt_Table( FT_Face face,
|
|
FT_Sfnt_Tag tag )
|
|
{
|
|
void* table = NULL;
|
|
FT_Service_SFNT_Table service;
|
|
|
|
|
|
if ( face && FT_IS_SFNT( face ) )
|
|
{
|
|
FT_FACE_FIND_SERVICE( face, service, SFNT_TABLE );
|
|
if ( service != NULL )
|
|
table = service->get_table( face, tag );
|
|
}
|
|
|
|
return table;
|
|
}
|
|
|
|
|
|
/* documentation is in tttables.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Load_Sfnt_Table( FT_Face face,
|
|
FT_ULong tag,
|
|
FT_Long offset,
|
|
FT_Byte* buffer,
|
|
FT_ULong* length )
|
|
{
|
|
FT_Service_SFNT_Table service;
|
|
|
|
|
|
if ( !face || !FT_IS_SFNT( face ) )
|
|
return FT_THROW( Invalid_Face_Handle );
|
|
|
|
FT_FACE_FIND_SERVICE( face, service, SFNT_TABLE );
|
|
if ( service == NULL )
|
|
return FT_THROW( Unimplemented_Feature );
|
|
|
|
return service->load_table( face, tag, offset, buffer, length );
|
|
}
|
|
|
|
|
|
/* documentation is in tttables.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Sfnt_Table_Info( FT_Face face,
|
|
FT_UInt table_index,
|
|
FT_ULong *tag,
|
|
FT_ULong *length )
|
|
{
|
|
FT_Service_SFNT_Table service;
|
|
FT_ULong offset;
|
|
|
|
|
|
/* test for valid `length' delayed to `service->table_info' */
|
|
|
|
if ( !face || !FT_IS_SFNT( face ) )
|
|
return FT_THROW( Invalid_Face_Handle );
|
|
|
|
FT_FACE_FIND_SERVICE( face, service, SFNT_TABLE );
|
|
if ( service == NULL )
|
|
return FT_THROW( Unimplemented_Feature );
|
|
|
|
return service->table_info( face, table_index, tag, &offset, length );
|
|
}
|
|
|
|
|
|
/* documentation is in tttables.h */
|
|
|
|
FT_EXPORT_DEF( FT_ULong )
|
|
FT_Get_CMap_Language_ID( FT_CharMap charmap )
|
|
{
|
|
FT_Service_TTCMaps service;
|
|
FT_Face face;
|
|
TT_CMapInfo cmap_info;
|
|
|
|
|
|
if ( !charmap || !charmap->face )
|
|
return 0;
|
|
|
|
face = charmap->face;
|
|
FT_FACE_FIND_SERVICE( face, service, TT_CMAP );
|
|
if ( service == NULL )
|
|
return 0;
|
|
if ( service->get_cmap_info( charmap, &cmap_info ))
|
|
return 0;
|
|
|
|
return cmap_info.language;
|
|
}
|
|
|
|
|
|
/* documentation is in tttables.h */
|
|
|
|
FT_EXPORT_DEF( FT_Long )
|
|
FT_Get_CMap_Format( FT_CharMap charmap )
|
|
{
|
|
FT_Service_TTCMaps service;
|
|
FT_Face face;
|
|
TT_CMapInfo cmap_info;
|
|
|
|
|
|
if ( !charmap || !charmap->face )
|
|
return -1;
|
|
|
|
face = charmap->face;
|
|
FT_FACE_FIND_SERVICE( face, service, TT_CMAP );
|
|
if ( service == NULL )
|
|
return -1;
|
|
if ( service->get_cmap_info( charmap, &cmap_info ))
|
|
return -1;
|
|
|
|
return cmap_info.format;
|
|
}
|
|
|
|
|
|
/* documentation is in ftsizes.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Activate_Size( FT_Size size )
|
|
{
|
|
FT_Face face;
|
|
|
|
|
|
if ( !size )
|
|
return FT_THROW( Invalid_Size_Handle );
|
|
|
|
face = size->face;
|
|
if ( !face || !face->driver )
|
|
return FT_THROW( Invalid_Face_Handle );
|
|
|
|
/* we don't need anything more complex than that; all size objects */
|
|
/* are already listed by the face */
|
|
face->size = size;
|
|
|
|
return FT_Err_Ok;
|
|
}
|
|
|
|
|
|
/*************************************************************************/
|
|
/*************************************************************************/
|
|
/*************************************************************************/
|
|
/**** ****/
|
|
/**** ****/
|
|
/**** R E N D E R E R S ****/
|
|
/**** ****/
|
|
/**** ****/
|
|
/*************************************************************************/
|
|
/*************************************************************************/
|
|
/*************************************************************************/
|
|
|
|
/* lookup a renderer by glyph format in the library's list */
|
|
FT_BASE_DEF( FT_Renderer )
|
|
FT_Lookup_Renderer( FT_Library library,
|
|
FT_Glyph_Format format,
|
|
FT_ListNode* node )
|
|
{
|
|
FT_ListNode cur;
|
|
FT_Renderer result = NULL;
|
|
|
|
|
|
if ( !library )
|
|
goto Exit;
|
|
|
|
cur = library->renderers.head;
|
|
|
|
if ( node )
|
|
{
|
|
if ( *node )
|
|
cur = (*node)->next;
|
|
*node = NULL;
|
|
}
|
|
|
|
while ( cur )
|
|
{
|
|
FT_Renderer renderer = FT_RENDERER( cur->data );
|
|
|
|
|
|
if ( renderer->glyph_format == format )
|
|
{
|
|
if ( node )
|
|
*node = cur;
|
|
|
|
result = renderer;
|
|
break;
|
|
}
|
|
cur = cur->next;
|
|
}
|
|
|
|
Exit:
|
|
return result;
|
|
}
|
|
|
|
|
|
static FT_Renderer
|
|
ft_lookup_glyph_renderer( FT_GlyphSlot slot )
|
|
{
|
|
FT_Face face = slot->face;
|
|
FT_Library library = FT_FACE_LIBRARY( face );
|
|
FT_Renderer result = library->cur_renderer;
|
|
|
|
|
|
if ( !result || result->glyph_format != slot->format )
|
|
result = FT_Lookup_Renderer( library, slot->format, 0 );
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
static void
|
|
ft_set_current_renderer( FT_Library library )
|
|
{
|
|
FT_Renderer renderer;
|
|
|
|
|
|
renderer = FT_Lookup_Renderer( library, FT_GLYPH_FORMAT_OUTLINE, 0 );
|
|
library->cur_renderer = renderer;
|
|
}
|
|
|
|
|
|
static FT_Error
|
|
ft_add_renderer( FT_Module module )
|
|
{
|
|
FT_Library library = module->library;
|
|
FT_Memory memory = library->memory;
|
|
FT_Error error;
|
|
FT_ListNode node = NULL;
|
|
|
|
|
|
if ( FT_NEW( node ) )
|
|
goto Exit;
|
|
|
|
{
|
|
FT_Renderer render = FT_RENDERER( module );
|
|
FT_Renderer_Class* clazz = (FT_Renderer_Class*)module->clazz;
|
|
|
|
|
|
render->clazz = clazz;
|
|
render->glyph_format = clazz->glyph_format;
|
|
|
|
/* allocate raster object if needed */
|
|
if ( clazz->glyph_format == FT_GLYPH_FORMAT_OUTLINE &&
|
|
clazz->raster_class->raster_new )
|
|
{
|
|
error = clazz->raster_class->raster_new( memory, &render->raster );
|
|
if ( error )
|
|
goto Fail;
|
|
|
|
render->raster_render = clazz->raster_class->raster_render;
|
|
render->render = clazz->render_glyph;
|
|
}
|
|
|
|
/* add to list */
|
|
node->data = module;
|
|
FT_List_Add( &library->renderers, node );
|
|
|
|
ft_set_current_renderer( library );
|
|
}
|
|
|
|
Fail:
|
|
if ( error )
|
|
FT_FREE( node );
|
|
|
|
Exit:
|
|
return error;
|
|
}
|
|
|
|
|
|
static void
|
|
ft_remove_renderer( FT_Module module )
|
|
{
|
|
FT_Library library;
|
|
FT_Memory memory;
|
|
FT_ListNode node;
|
|
|
|
|
|
library = module->library;
|
|
if ( !library )
|
|
return;
|
|
|
|
memory = library->memory;
|
|
|
|
node = FT_List_Find( &library->renderers, module );
|
|
if ( node )
|
|
{
|
|
FT_Renderer render = FT_RENDERER( module );
|
|
|
|
|
|
/* release raster object, if any */
|
|
if ( render->clazz->glyph_format == FT_GLYPH_FORMAT_OUTLINE &&
|
|
render->raster )
|
|
render->clazz->raster_class->raster_done( render->raster );
|
|
|
|
/* remove from list */
|
|
FT_List_Remove( &library->renderers, node );
|
|
FT_FREE( node );
|
|
|
|
ft_set_current_renderer( library );
|
|
}
|
|
}
|
|
|
|
|
|
/* documentation is in ftrender.h */
|
|
|
|
FT_EXPORT_DEF( FT_Renderer )
|
|
FT_Get_Renderer( FT_Library library,
|
|
FT_Glyph_Format format )
|
|
{
|
|
/* test for valid `library' delayed to `FT_Lookup_Renderer' */
|
|
|
|
return FT_Lookup_Renderer( library, format, 0 );
|
|
}
|
|
|
|
|
|
/* documentation is in ftrender.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Set_Renderer( FT_Library library,
|
|
FT_Renderer renderer,
|
|
FT_UInt num_params,
|
|
FT_Parameter* parameters )
|
|
{
|
|
FT_ListNode node;
|
|
FT_Error error = FT_Err_Ok;
|
|
|
|
FT_Renderer_SetModeFunc set_mode;
|
|
|
|
|
|
if ( !library )
|
|
{
|
|
error = FT_THROW( Invalid_Library_Handle );
|
|
goto Exit;
|
|
}
|
|
|
|
if ( !renderer )
|
|
{
|
|
error = FT_THROW( Invalid_Argument );
|
|
goto Exit;
|
|
}
|
|
|
|
if ( num_params > 0 && !parameters )
|
|
{
|
|
error = FT_THROW( Invalid_Argument );
|
|
goto Exit;
|
|
}
|
|
|
|
node = FT_List_Find( &library->renderers, renderer );
|
|
if ( !node )
|
|
{
|
|
error = FT_THROW( Invalid_Argument );
|
|
goto Exit;
|
|
}
|
|
|
|
FT_List_Up( &library->renderers, node );
|
|
|
|
if ( renderer->glyph_format == FT_GLYPH_FORMAT_OUTLINE )
|
|
library->cur_renderer = renderer;
|
|
|
|
set_mode = renderer->clazz->set_mode;
|
|
|
|
for ( ; num_params > 0; num_params-- )
|
|
{
|
|
error = set_mode( renderer, parameters->tag, parameters->data );
|
|
if ( error )
|
|
break;
|
|
parameters++;
|
|
}
|
|
|
|
Exit:
|
|
return error;
|
|
}
|
|
|
|
|
|
FT_BASE_DEF( FT_Error )
|
|
FT_Render_Glyph_Internal( FT_Library library,
|
|
FT_GlyphSlot slot,
|
|
FT_Render_Mode render_mode )
|
|
{
|
|
FT_Error error = FT_Err_Ok;
|
|
FT_Renderer renderer;
|
|
|
|
|
|
/* if it is already a bitmap, no need to do anything */
|
|
switch ( slot->format )
|
|
{
|
|
case FT_GLYPH_FORMAT_BITMAP: /* already a bitmap, don't do anything */
|
|
break;
|
|
|
|
default:
|
|
{
|
|
FT_ListNode node = NULL;
|
|
|
|
|
|
/* small shortcut for the very common case */
|
|
if ( slot->format == FT_GLYPH_FORMAT_OUTLINE )
|
|
{
|
|
renderer = library->cur_renderer;
|
|
node = library->renderers.head;
|
|
}
|
|
else
|
|
renderer = FT_Lookup_Renderer( library, slot->format, &node );
|
|
|
|
error = FT_ERR( Unimplemented_Feature );
|
|
while ( renderer )
|
|
{
|
|
error = renderer->render( renderer, slot, render_mode, NULL );
|
|
if ( !error ||
|
|
FT_ERR_NEQ( error, Cannot_Render_Glyph ) )
|
|
break;
|
|
|
|
/* FT_Err_Cannot_Render_Glyph is returned if the render mode */
|
|
/* is unsupported by the current renderer for this glyph image */
|
|
/* format. */
|
|
|
|
/* now, look for another renderer that supports the same */
|
|
/* format. */
|
|
renderer = FT_Lookup_Renderer( library, slot->format, &node );
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef FT_DEBUG_LEVEL_TRACE
|
|
|
|
#undef FT_COMPONENT
|
|
#define FT_COMPONENT trace_bitmap
|
|
|
|
/*
|
|
* Computing the MD5 checksum is expensive, unnecessarily distorting a
|
|
* possible profiling of FreeType if compiled with tracing support. For
|
|
* this reason, we execute the following code only if explicitly
|
|
* requested.
|
|
*/
|
|
|
|
/* we use FT_TRACE3 in this block */
|
|
if ( ft_trace_levels[trace_bitmap] >= 3 )
|
|
{
|
|
/* we convert to a single bitmap format for computing the checksum */
|
|
if ( !error )
|
|
{
|
|
FT_Bitmap bitmap;
|
|
FT_Error err;
|
|
|
|
|
|
FT_Bitmap_Init( &bitmap );
|
|
|
|
/* this also converts the bitmap flow to `down' (i.e., pitch > 0) */
|
|
err = FT_Bitmap_Convert( library, &slot->bitmap, &bitmap, 1 );
|
|
if ( !err )
|
|
{
|
|
MD5_CTX ctx;
|
|
unsigned char md5[16];
|
|
int i;
|
|
unsigned int rows = bitmap.rows;
|
|
unsigned int pitch = (unsigned int)bitmap.pitch;
|
|
|
|
|
|
MD5_Init( &ctx );
|
|
if ( bitmap.buffer )
|
|
MD5_Update( &ctx, bitmap.buffer, rows * pitch );
|
|
MD5_Final( md5, &ctx );
|
|
|
|
FT_TRACE3(( "MD5 checksum for %dx%d bitmap:\n"
|
|
" ",
|
|
rows, pitch ));
|
|
for ( i = 0; i < 16; i++ )
|
|
FT_TRACE3(( "%02X", md5[i] ));
|
|
FT_TRACE3(( "\n" ));
|
|
}
|
|
|
|
FT_Bitmap_Done( library, &bitmap );
|
|
}
|
|
}
|
|
|
|
#undef FT_COMPONENT
|
|
#define FT_COMPONENT trace_objs
|
|
|
|
#endif /* FT_DEBUG_LEVEL_TRACE */
|
|
|
|
return error;
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Render_Glyph( FT_GlyphSlot slot,
|
|
FT_Render_Mode render_mode )
|
|
{
|
|
FT_Library library;
|
|
|
|
|
|
if ( !slot || !slot->face )
|
|
return FT_THROW( Invalid_Argument );
|
|
|
|
library = FT_FACE_LIBRARY( slot->face );
|
|
|
|
return FT_Render_Glyph_Internal( library, slot, render_mode );
|
|
}
|
|
|
|
|
|
/*************************************************************************/
|
|
/*************************************************************************/
|
|
/*************************************************************************/
|
|
/**** ****/
|
|
/**** ****/
|
|
/**** M O D U L E S ****/
|
|
/**** ****/
|
|
/**** ****/
|
|
/*************************************************************************/
|
|
/*************************************************************************/
|
|
/*************************************************************************/
|
|
|
|
|
|
/*************************************************************************/
|
|
/* */
|
|
/* <Function> */
|
|
/* Destroy_Module */
|
|
/* */
|
|
/* <Description> */
|
|
/* Destroys a given module object. For drivers, this also destroys */
|
|
/* all child faces. */
|
|
/* */
|
|
/* <InOut> */
|
|
/* module :: A handle to the target driver object. */
|
|
/* */
|
|
/* <Note> */
|
|
/* The driver _must_ be LOCKED! */
|
|
/* */
|
|
static void
|
|
Destroy_Module( FT_Module module )
|
|
{
|
|
FT_Memory memory = module->memory;
|
|
FT_Module_Class* clazz = module->clazz;
|
|
FT_Library library = module->library;
|
|
|
|
|
|
if ( library && library->auto_hinter == module )
|
|
library->auto_hinter = NULL;
|
|
|
|
/* if the module is a renderer */
|
|
if ( FT_MODULE_IS_RENDERER( module ) )
|
|
ft_remove_renderer( module );
|
|
|
|
/* if the module is a font driver, add some steps */
|
|
if ( FT_MODULE_IS_DRIVER( module ) )
|
|
Destroy_Driver( FT_DRIVER( module ) );
|
|
|
|
/* finalize the module object */
|
|
if ( clazz->module_done )
|
|
clazz->module_done( module );
|
|
|
|
/* discard it */
|
|
FT_FREE( module );
|
|
}
|
|
|
|
|
|
/* documentation is in ftmodapi.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Add_Module( FT_Library library,
|
|
const FT_Module_Class* clazz )
|
|
{
|
|
FT_Error error;
|
|
FT_Memory memory;
|
|
FT_Module module;
|
|
FT_UInt nn;
|
|
|
|
|
|
#define FREETYPE_VER_FIXED ( ( (FT_Long)FREETYPE_MAJOR << 16 ) | \
|
|
FREETYPE_MINOR )
|
|
|
|
if ( !library )
|
|
return FT_THROW( Invalid_Library_Handle );
|
|
|
|
if ( !clazz )
|
|
return FT_THROW( Invalid_Argument );
|
|
|
|
/* check freetype version */
|
|
if ( clazz->module_requires > FREETYPE_VER_FIXED )
|
|
return FT_THROW( Invalid_Version );
|
|
|
|
/* look for a module with the same name in the library's table */
|
|
for ( nn = 0; nn < library->num_modules; nn++ )
|
|
{
|
|
module = library->modules[nn];
|
|
if ( ft_strcmp( module->clazz->module_name, clazz->module_name ) == 0 )
|
|
{
|
|
/* this installed module has the same name, compare their versions */
|
|
if ( clazz->module_version <= module->clazz->module_version )
|
|
return FT_THROW( Lower_Module_Version );
|
|
|
|
/* remove the module from our list, then exit the loop to replace */
|
|
/* it by our new version.. */
|
|
FT_Remove_Module( library, module );
|
|
break;
|
|
}
|
|
}
|
|
|
|
memory = library->memory;
|
|
error = FT_Err_Ok;
|
|
|
|
if ( library->num_modules >= FT_MAX_MODULES )
|
|
{
|
|
error = FT_THROW( Too_Many_Drivers );
|
|
goto Exit;
|
|
}
|
|
|
|
/* allocate module object */
|
|
if ( FT_ALLOC( module, clazz->module_size ) )
|
|
goto Exit;
|
|
|
|
/* base initialization */
|
|
module->library = library;
|
|
module->memory = memory;
|
|
module->clazz = (FT_Module_Class*)clazz;
|
|
|
|
/* check whether the module is a renderer - this must be performed */
|
|
/* before the normal module initialization */
|
|
if ( FT_MODULE_IS_RENDERER( module ) )
|
|
{
|
|
/* add to the renderers list */
|
|
error = ft_add_renderer( module );
|
|
if ( error )
|
|
goto Fail;
|
|
}
|
|
|
|
/* is the module a auto-hinter? */
|
|
if ( FT_MODULE_IS_HINTER( module ) )
|
|
library->auto_hinter = module;
|
|
|
|
/* if the module is a font driver */
|
|
if ( FT_MODULE_IS_DRIVER( module ) )
|
|
{
|
|
FT_Driver driver = FT_DRIVER( module );
|
|
|
|
|
|
driver->clazz = (FT_Driver_Class)module->clazz;
|
|
}
|
|
|
|
if ( clazz->module_init )
|
|
{
|
|
error = clazz->module_init( module );
|
|
if ( error )
|
|
goto Fail;
|
|
}
|
|
|
|
/* add module to the library's table */
|
|
library->modules[library->num_modules++] = module;
|
|
|
|
Exit:
|
|
return error;
|
|
|
|
Fail:
|
|
if ( FT_MODULE_IS_RENDERER( module ) )
|
|
{
|
|
FT_Renderer renderer = FT_RENDERER( module );
|
|
|
|
|
|
if ( renderer->clazz &&
|
|
renderer->clazz->glyph_format == FT_GLYPH_FORMAT_OUTLINE &&
|
|
renderer->raster )
|
|
renderer->clazz->raster_class->raster_done( renderer->raster );
|
|
}
|
|
|
|
FT_FREE( module );
|
|
goto Exit;
|
|
}
|
|
|
|
|
|
/* documentation is in ftmodapi.h */
|
|
|
|
FT_EXPORT_DEF( FT_Module )
|
|
FT_Get_Module( FT_Library library,
|
|
const char* module_name )
|
|
{
|
|
FT_Module result = NULL;
|
|
FT_Module* cur;
|
|
FT_Module* limit;
|
|
|
|
|
|
if ( !library || !module_name )
|
|
return result;
|
|
|
|
cur = library->modules;
|
|
limit = cur + library->num_modules;
|
|
|
|
for ( ; cur < limit; cur++ )
|
|
if ( ft_strcmp( cur[0]->clazz->module_name, module_name ) == 0 )
|
|
{
|
|
result = cur[0];
|
|
break;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
/* documentation is in ftobjs.h */
|
|
|
|
FT_BASE_DEF( const void* )
|
|
FT_Get_Module_Interface( FT_Library library,
|
|
const char* mod_name )
|
|
{
|
|
FT_Module module;
|
|
|
|
|
|
/* test for valid `library' delayed to FT_Get_Module() */
|
|
|
|
module = FT_Get_Module( library, mod_name );
|
|
|
|
return module ? module->clazz->module_interface : 0;
|
|
}
|
|
|
|
|
|
FT_BASE_DEF( FT_Pointer )
|
|
ft_module_get_service( FT_Module module,
|
|
const char* service_id )
|
|
{
|
|
FT_Pointer result = NULL;
|
|
|
|
|
|
if ( module )
|
|
{
|
|
FT_ASSERT( module->clazz && module->clazz->get_interface );
|
|
|
|
/* first, look for the service in the module */
|
|
if ( module->clazz->get_interface )
|
|
result = module->clazz->get_interface( module, service_id );
|
|
|
|
if ( result == NULL )
|
|
{
|
|
/* we didn't find it, look in all other modules then */
|
|
FT_Library library = module->library;
|
|
FT_Module* cur = library->modules;
|
|
FT_Module* limit = cur + library->num_modules;
|
|
|
|
|
|
for ( ; cur < limit; cur++ )
|
|
{
|
|
if ( cur[0] != module )
|
|
{
|
|
FT_ASSERT( cur[0]->clazz );
|
|
|
|
if ( cur[0]->clazz->get_interface )
|
|
{
|
|
result = cur[0]->clazz->get_interface( cur[0], service_id );
|
|
if ( result != NULL )
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
/* documentation is in ftmodapi.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Remove_Module( FT_Library library,
|
|
FT_Module module )
|
|
{
|
|
/* try to find the module from the table, then remove it from there */
|
|
|
|
if ( !library )
|
|
return FT_THROW( Invalid_Library_Handle );
|
|
|
|
if ( module )
|
|
{
|
|
FT_Module* cur = library->modules;
|
|
FT_Module* limit = cur + library->num_modules;
|
|
|
|
|
|
for ( ; cur < limit; cur++ )
|
|
{
|
|
if ( cur[0] == module )
|
|
{
|
|
/* remove it from the table */
|
|
library->num_modules--;
|
|
limit--;
|
|
while ( cur < limit )
|
|
{
|
|
cur[0] = cur[1];
|
|
cur++;
|
|
}
|
|
limit[0] = NULL;
|
|
|
|
/* destroy the module */
|
|
Destroy_Module( module );
|
|
|
|
return FT_Err_Ok;
|
|
}
|
|
}
|
|
}
|
|
return FT_THROW( Invalid_Driver_Handle );
|
|
}
|
|
|
|
|
|
static FT_Error
|
|
ft_property_do( FT_Library library,
|
|
const FT_String* module_name,
|
|
const FT_String* property_name,
|
|
void* value,
|
|
FT_Bool set )
|
|
{
|
|
FT_Module* cur;
|
|
FT_Module* limit;
|
|
FT_Module_Interface interface;
|
|
|
|
FT_Service_Properties service;
|
|
|
|
#ifdef FT_DEBUG_LEVEL_ERROR
|
|
const FT_String* set_name = "FT_Property_Set";
|
|
const FT_String* get_name = "FT_Property_Get";
|
|
const FT_String* func_name = set ? set_name : get_name;
|
|
#endif
|
|
|
|
FT_Bool missing_func;
|
|
|
|
|
|
if ( !library )
|
|
return FT_THROW( Invalid_Library_Handle );
|
|
|
|
if ( !module_name || !property_name || !value )
|
|
return FT_THROW( Invalid_Argument );
|
|
|
|
cur = library->modules;
|
|
limit = cur + library->num_modules;
|
|
|
|
/* search module */
|
|
for ( ; cur < limit; cur++ )
|
|
if ( !ft_strcmp( cur[0]->clazz->module_name, module_name ) )
|
|
break;
|
|
|
|
if ( cur == limit )
|
|
{
|
|
FT_ERROR(( "%s: can't find module `%s'\n",
|
|
func_name, module_name ));
|
|
return FT_THROW( Missing_Module );
|
|
}
|
|
|
|
/* check whether we have a service interface */
|
|
if ( !cur[0]->clazz->get_interface )
|
|
{
|
|
FT_ERROR(( "%s: module `%s' doesn't support properties\n",
|
|
func_name, module_name ));
|
|
return FT_THROW( Unimplemented_Feature );
|
|
}
|
|
|
|
/* search property service */
|
|
interface = cur[0]->clazz->get_interface( cur[0],
|
|
FT_SERVICE_ID_PROPERTIES );
|
|
if ( !interface )
|
|
{
|
|
FT_ERROR(( "%s: module `%s' doesn't support properties\n",
|
|
func_name, module_name ));
|
|
return FT_THROW( Unimplemented_Feature );
|
|
}
|
|
|
|
service = (FT_Service_Properties)interface;
|
|
|
|
if ( set )
|
|
missing_func = (FT_Bool)( !service->set_property );
|
|
else
|
|
missing_func = (FT_Bool)( !service->get_property );
|
|
|
|
if ( missing_func )
|
|
{
|
|
FT_ERROR(( "%s: property service of module `%s' is broken\n",
|
|
func_name, module_name ));
|
|
return FT_THROW( Unimplemented_Feature );
|
|
}
|
|
|
|
return set ? service->set_property( cur[0], property_name, value )
|
|
: service->get_property( cur[0], property_name, value );
|
|
}
|
|
|
|
|
|
/* documentation is in ftmodapi.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Property_Set( FT_Library library,
|
|
const FT_String* module_name,
|
|
const FT_String* property_name,
|
|
const void* value )
|
|
{
|
|
return ft_property_do( library,
|
|
module_name,
|
|
property_name,
|
|
(void*)value,
|
|
TRUE );
|
|
}
|
|
|
|
|
|
/* documentation is in ftmodapi.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Property_Get( FT_Library library,
|
|
const FT_String* module_name,
|
|
const FT_String* property_name,
|
|
void* value )
|
|
{
|
|
return ft_property_do( library,
|
|
module_name,
|
|
property_name,
|
|
value,
|
|
FALSE );
|
|
}
|
|
|
|
|
|
/*************************************************************************/
|
|
/*************************************************************************/
|
|
/*************************************************************************/
|
|
/**** ****/
|
|
/**** ****/
|
|
/**** L I B R A R Y ****/
|
|
/**** ****/
|
|
/**** ****/
|
|
/*************************************************************************/
|
|
/*************************************************************************/
|
|
/*************************************************************************/
|
|
|
|
|
|
/* documentation is in ftmodapi.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Reference_Library( FT_Library library )
|
|
{
|
|
if ( !library )
|
|
return FT_THROW( Invalid_Library_Handle );
|
|
|
|
library->refcount++;
|
|
|
|
return FT_Err_Ok;
|
|
}
|
|
|
|
|
|
/* documentation is in ftmodapi.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_New_Library( FT_Memory memory,
|
|
FT_Library *alibrary )
|
|
{
|
|
FT_Library library = NULL;
|
|
FT_Error error;
|
|
|
|
|
|
if ( !memory || !alibrary )
|
|
return FT_THROW( Invalid_Argument );
|
|
|
|
#ifdef FT_DEBUG_LEVEL_ERROR
|
|
/* init debugging support */
|
|
ft_debug_init();
|
|
#endif
|
|
|
|
/* first of all, allocate the library object */
|
|
if ( FT_NEW( library ) )
|
|
return error;
|
|
|
|
library->memory = memory;
|
|
|
|
#ifdef FT_CONFIG_OPTION_PIC
|
|
/* initialize position independent code containers */
|
|
error = ft_pic_container_init( library );
|
|
if ( error )
|
|
goto Fail;
|
|
#endif
|
|
|
|
/* we don't use raster_pool anymore. */
|
|
library->raster_pool_size = 0;
|
|
library->raster_pool = NULL;
|
|
|
|
library->version_major = FREETYPE_MAJOR;
|
|
library->version_minor = FREETYPE_MINOR;
|
|
library->version_patch = FREETYPE_PATCH;
|
|
|
|
library->refcount = 1;
|
|
|
|
/* That's ok now */
|
|
*alibrary = library;
|
|
|
|
return FT_Err_Ok;
|
|
|
|
#ifdef FT_CONFIG_OPTION_PIC
|
|
Fail:
|
|
ft_pic_container_destroy( library );
|
|
#endif
|
|
FT_FREE( library );
|
|
return error;
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( void )
|
|
FT_Library_Version( FT_Library library,
|
|
FT_Int *amajor,
|
|
FT_Int *aminor,
|
|
FT_Int *apatch )
|
|
{
|
|
FT_Int major = 0;
|
|
FT_Int minor = 0;
|
|
FT_Int patch = 0;
|
|
|
|
|
|
if ( library )
|
|
{
|
|
major = library->version_major;
|
|
minor = library->version_minor;
|
|
patch = library->version_patch;
|
|
}
|
|
|
|
if ( amajor )
|
|
*amajor = major;
|
|
|
|
if ( aminor )
|
|
*aminor = minor;
|
|
|
|
if ( apatch )
|
|
*apatch = patch;
|
|
}
|
|
|
|
|
|
/* documentation is in ftmodapi.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Done_Library( FT_Library library )
|
|
{
|
|
FT_Memory memory;
|
|
|
|
|
|
if ( !library )
|
|
return FT_THROW( Invalid_Library_Handle );
|
|
|
|
library->refcount--;
|
|
if ( library->refcount > 0 )
|
|
goto Exit;
|
|
|
|
memory = library->memory;
|
|
|
|
/*
|
|
* Close all faces in the library. If we don't do this, we can have
|
|
* some subtle memory leaks.
|
|
*
|
|
* Example:
|
|
*
|
|
* - the cff font driver uses the pshinter module in cff_size_done
|
|
* - if the pshinter module is destroyed before the cff font driver,
|
|
* opened FT_Face objects managed by the driver are not properly
|
|
* destroyed, resulting in a memory leak
|
|
*
|
|
* Some faces are dependent on other faces, like Type42 faces that
|
|
* depend on TrueType faces synthesized internally.
|
|
*
|
|
* The order of drivers should be specified in driver_name[].
|
|
*/
|
|
{
|
|
FT_UInt m, n;
|
|
const char* driver_name[] = { "type42", NULL };
|
|
|
|
|
|
for ( m = 0;
|
|
m < sizeof ( driver_name ) / sizeof ( driver_name[0] );
|
|
m++ )
|
|
{
|
|
for ( n = 0; n < library->num_modules; n++ )
|
|
{
|
|
FT_Module module = library->modules[n];
|
|
const char* module_name = module->clazz->module_name;
|
|
FT_List faces;
|
|
|
|
|
|
if ( driver_name[m] &&
|
|
ft_strcmp( module_name, driver_name[m] ) != 0 )
|
|
continue;
|
|
|
|
if ( ( module->clazz->module_flags & FT_MODULE_FONT_DRIVER ) == 0 )
|
|
continue;
|
|
|
|
FT_TRACE7(( "FT_Done_Library: close faces for %s\n", module_name ));
|
|
|
|
faces = &FT_DRIVER( module )->faces_list;
|
|
while ( faces->head )
|
|
{
|
|
FT_Done_Face( FT_FACE( faces->head->data ) );
|
|
if ( faces->head )
|
|
FT_TRACE0(( "FT_Done_Library: failed to free some faces\n" ));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Close all other modules in the library */
|
|
#if 1
|
|
/* XXX Modules are removed in the reversed order so that */
|
|
/* type42 module is removed before truetype module. This */
|
|
/* avoids double free in some occasions. It is a hack. */
|
|
while ( library->num_modules > 0 )
|
|
FT_Remove_Module( library,
|
|
library->modules[library->num_modules - 1] );
|
|
#else
|
|
{
|
|
FT_UInt n;
|
|
|
|
|
|
for ( n = 0; n < library->num_modules; n++ )
|
|
{
|
|
FT_Module module = library->modules[n];
|
|
|
|
|
|
if ( module )
|
|
{
|
|
Destroy_Module( module );
|
|
library->modules[n] = NULL;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#ifdef FT_CONFIG_OPTION_PIC
|
|
/* Destroy pic container contents */
|
|
ft_pic_container_destroy( library );
|
|
#endif
|
|
|
|
FT_FREE( library );
|
|
|
|
Exit:
|
|
return FT_Err_Ok;
|
|
}
|
|
|
|
|
|
/* documentation is in ftmodapi.h */
|
|
|
|
FT_EXPORT_DEF( void )
|
|
FT_Set_Debug_Hook( FT_Library library,
|
|
FT_UInt hook_index,
|
|
FT_DebugHook_Func debug_hook )
|
|
{
|
|
if ( library && debug_hook &&
|
|
hook_index <
|
|
( sizeof ( library->debug_hooks ) / sizeof ( void* ) ) )
|
|
library->debug_hooks[hook_index] = debug_hook;
|
|
}
|
|
|
|
|
|
/* documentation is in ftmodapi.h */
|
|
|
|
FT_EXPORT_DEF( FT_TrueTypeEngineType )
|
|
FT_Get_TrueType_Engine_Type( FT_Library library )
|
|
{
|
|
FT_TrueTypeEngineType result = FT_TRUETYPE_ENGINE_TYPE_NONE;
|
|
|
|
|
|
if ( library )
|
|
{
|
|
FT_Module module = FT_Get_Module( library, "truetype" );
|
|
|
|
|
|
if ( module )
|
|
{
|
|
FT_Service_TrueTypeEngine service;
|
|
|
|
|
|
service = (FT_Service_TrueTypeEngine)
|
|
ft_module_get_service( module,
|
|
FT_SERVICE_ID_TRUETYPE_ENGINE );
|
|
if ( service )
|
|
result = service->engine_type;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Get_SubGlyph_Info( FT_GlyphSlot glyph,
|
|
FT_UInt sub_index,
|
|
FT_Int *p_index,
|
|
FT_UInt *p_flags,
|
|
FT_Int *p_arg1,
|
|
FT_Int *p_arg2,
|
|
FT_Matrix *p_transform )
|
|
{
|
|
FT_Error error = FT_ERR( Invalid_Argument );
|
|
|
|
|
|
if ( glyph &&
|
|
glyph->subglyphs &&
|
|
glyph->format == FT_GLYPH_FORMAT_COMPOSITE &&
|
|
sub_index < glyph->num_subglyphs )
|
|
{
|
|
FT_SubGlyph subg = glyph->subglyphs + sub_index;
|
|
|
|
|
|
*p_index = subg->index;
|
|
*p_flags = subg->flags;
|
|
*p_arg1 = subg->arg1;
|
|
*p_arg2 = subg->arg2;
|
|
*p_transform = subg->transform;
|
|
|
|
error = FT_Err_Ok;
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
|
|
/* END */
|