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kc3-lang/freetype/src/base/ftobjs.c
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Author :
Werner Lemberg
Date : 2003-09-17 19:20:02
Hash : 46333a11
Message : * include/freetype/internal/ftserv.h (FT_FACE_FIND_SERVICE, FT_FACE_LOOKUP_SERVICE): Add parameter to pass pointer type. Ugly, I know, but this is needed for compilation with C++ -- maybe someone knows a better solution? Updated all callers. * src/base/ftobjs.c (FT_Get_Name_Index, FT_Get_Glyph_Name): Remove C++ compiler warnings. * src/base/ftbdf.c (FT_Get_BDF_Charset_ID, FT_Get_BDF_Property): Fix order of arguments passed to FT_FACE_FIND_SERVICE.
- src/base/ftobjs.c
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/***************************************************************************/ /* */ /* ftobjs.c */ /* */ /* The FreeType private base classes (body). */ /* */ /* Copyright 1996-2001, 2002, 2003 by */ /* David Turner, Robert Wilhelm, and Werner Lemberg. */ /* */ /* This file is part of the FreeType project, and may only be used, */ /* modified, and distributed under the terms of the FreeType project */ /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ /* this file you indicate that you have read the license and */ /* understand and accept it fully. */ /* */ /***************************************************************************/ #include <ft2build.h> #include FT_LIST_H #include FT_OUTLINE_H #include FT_INTERNAL_OBJECTS_H #include FT_INTERNAL_DEBUG_H #include FT_INTERNAL_STREAM_H #include FT_INTERNAL_SFNT_H /* for SFNT_Load_Table_Func */ #include FT_TRUETYPE_TABLES_H #include FT_TRUETYPE_IDS_H #include FT_OUTLINE_H #include FT_SERVICE_SFNT_H #include FT_SERVICE_POSTSCRIPT_NAME_H #include FT_SERVICE_GLYPH_DICT_H FT_BASE_DEF( FT_Pointer ) ft_service_list_lookup( FT_ServiceDesc service_descriptors, const char* service_id ) { FT_Pointer result = NULL; FT_ServiceDesc desc = service_descriptors; if ( desc && service_id ) { for ( ; desc->serv_id != NULL; desc++ ) { if ( ft_strcmp( desc->serv_id, service_id ) == 0 ) { result = (FT_Pointer)desc->serv_data; break; } } } return result; } FT_BASE_DEF( void ) ft_validator_init( FT_Validator valid, const FT_Byte* base, const FT_Byte* limit, FT_ValidationLevel level ) { valid->base = base; valid->limit = limit; valid->level = level; valid->error = 0; } FT_BASE_DEF( FT_Int ) ft_validator_run( FT_Validator valid ) { int result; result = ft_setjmp( valid->jump_buffer ); return result; } FT_BASE_DEF( void ) ft_validator_error( FT_Validator valid, FT_Error error ) { valid->error = error; ft_longjmp( valid->jump_buffer, 1 ); } /*************************************************************************/ /*************************************************************************/ /*************************************************************************/ /**** ****/ /**** ****/ /**** S T R E A M ****/ /**** ****/ /**** ****/ /*************************************************************************/ /*************************************************************************/ /*************************************************************************/ /* create a new input stream from a FT_Open_Args structure */ /* */ static FT_Error ft_input_stream_new( FT_Library library, const FT_Open_Args* args, FT_Stream* astream ) { FT_Error error; FT_Memory memory; FT_Stream stream; if ( !library ) return FT_Err_Invalid_Library_Handle; if ( !args ) return FT_Err_Invalid_Argument; *astream = 0; memory = library->memory; if ( FT_NEW( stream ) ) goto Exit; stream->memory = memory; if ( args->flags & FT_OPEN_MEMORY ) { /* create a memory-based stream */ FT_Stream_OpenMemory( stream, (const FT_Byte*)args->memory_base, args->memory_size ); } else if ( args->flags & FT_OPEN_PATHNAME ) { /* create a normal system stream */ error = FT_Stream_Open( stream, args->pathname ); stream->pathname.pointer = args->pathname; } else if ( ( args->flags & FT_OPEN_STREAM ) && args->stream ) { /* use an existing, user-provided stream */ /* in this case, we do not need to allocate a new stream object */ /* since the caller is responsible for closing it himself */ FT_FREE( stream ); stream = args->stream; } else error = FT_Err_Invalid_Argument; if ( error ) FT_FREE( stream ); else stream->memory = memory; /* just to be certain */ *astream = stream; Exit: return error; } static void ft_input_stream_free( FT_Stream stream, FT_Int external ) { if ( stream ) { FT_Memory memory = stream->memory; FT_Stream_Close( stream ); if ( !external ) FT_FREE( stream ); } } #undef FT_COMPONENT #define FT_COMPONENT trace_objs /*************************************************************************/ /*************************************************************************/ /*************************************************************************/ /**** ****/ /**** ****/ /**** FACE, SIZE & GLYPH SLOT OBJECTS ****/ /**** ****/ /**** ****/ /*************************************************************************/ /*************************************************************************/ /*************************************************************************/ static FT_Error ft_glyphslot_init( FT_GlyphSlot slot ) { FT_Driver driver = slot->face->driver; FT_Driver_Class clazz = driver->clazz; FT_Memory memory = driver->root.memory; FT_Error error = FT_Err_Ok; FT_Slot_Internal internal; slot->library = driver->root.library; if ( FT_NEW( internal ) ) goto Exit; slot->internal = internal; if ( FT_DRIVER_USES_OUTLINES( driver ) ) error = FT_GlyphLoader_New( memory, &internal->loader ); if ( !error && clazz->init_slot ) error = clazz->init_slot( slot ); Exit: return error; } FT_BASE_DEF( void ) ft_glyphslot_free_bitmap( FT_GlyphSlot slot ) { if ( slot->internal->flags & FT_GLYPH_OWN_BITMAP ) { FT_Memory memory = FT_FACE_MEMORY( slot->face ); FT_FREE( slot->bitmap.buffer ); slot->internal->flags &= ~FT_GLYPH_OWN_BITMAP; } else { /* assume that the bitmap buffer was stolen or not */ /* allocated from the heap */ slot->bitmap.buffer = NULL; } } FT_BASE_DEF( void ) ft_glyphslot_set_bitmap( FT_GlyphSlot slot, FT_Byte* buffer ) { ft_glyphslot_free_bitmap( slot ); slot->bitmap.buffer = buffer; FT_ASSERT( (slot->internal->flags & FT_GLYPH_OWN_BITMAP) == 0 ); } FT_BASE_DEF( FT_Error ) ft_glyphslot_alloc_bitmap( FT_GlyphSlot slot, FT_ULong size ) { FT_Memory memory = FT_FACE_MEMORY( slot->face ); if ( slot->internal->flags & FT_GLYPH_OWN_BITMAP ) FT_FREE( slot->bitmap.buffer ); else slot->internal->flags |= FT_GLYPH_OWN_BITMAP; return FT_MEM_ALLOC( slot->bitmap.buffer, size ); } static void ft_glyphslot_clear( FT_GlyphSlot slot ) { /* free bitmap if needed */ ft_glyphslot_free_bitmap( slot ); /* clear all public fields in the glyph slot */ FT_ZERO( &slot->metrics ); FT_ZERO( &slot->outline ); slot->bitmap.width = 0; slot->bitmap.rows = 0; slot->bitmap.pitch = 0; slot->bitmap.pixel_mode = 0; /* don't touch 'slot->bitmap.buffer'! */ slot->bitmap_left = 0; slot->bitmap_top = 0; slot->num_subglyphs = 0; slot->subglyphs = 0; slot->control_data = 0; slot->control_len = 0; slot->other = 0; slot->format = FT_GLYPH_FORMAT_NONE; slot->linearHoriAdvance = 0; slot->linearVertAdvance = 0; } static void ft_glyphslot_done( FT_GlyphSlot slot ) { FT_Driver driver = slot->face->driver; FT_Driver_Class clazz = driver->clazz; FT_Memory memory = driver->root.memory; if ( clazz->done_slot ) clazz->done_slot( slot ); /* free bitmap buffer if needed */ ft_glyphslot_free_bitmap( slot ); /* free glyph loader */ if ( FT_DRIVER_USES_OUTLINES( driver ) ) { FT_GlyphLoader_Done( slot->internal->loader ); slot->internal->loader = 0; } FT_FREE( slot->internal ); } /* documentation is in ftobjs.h */ FT_BASE_DEF( FT_Error ) FT_New_GlyphSlot( FT_Face face, FT_GlyphSlot *aslot ) { FT_Error error; FT_Driver driver; FT_Driver_Class clazz; FT_Memory memory; FT_GlyphSlot slot; if ( !face || !aslot || !face->driver ) return FT_Err_Invalid_Argument; *aslot = 0; driver = face->driver; clazz = driver->clazz; memory = driver->root.memory; FT_TRACE4(( "FT_New_GlyphSlot: Creating new slot object\n" )); if ( !FT_ALLOC( slot, clazz->slot_object_size ) ) { slot->face = face; error = ft_glyphslot_init( slot ); if ( error ) { ft_glyphslot_done( slot ); FT_FREE( slot ); goto Exit; } *aslot = slot; } Exit: FT_TRACE4(( "FT_New_GlyphSlot: Return %d\n", error )); return error; } /* documentation is in ftobjs.h */ FT_BASE_DEF( void ) FT_Done_GlyphSlot( FT_GlyphSlot slot ) { if ( slot ) { FT_Driver driver = slot->face->driver; FT_Memory memory = driver->root.memory; FT_GlyphSlot* parent; FT_GlyphSlot cur; /* Remove slot from its parent face's list */ parent = &slot->face->glyph; cur = *parent; while ( cur ) { if ( cur == slot ) { *parent = cur->next; ft_glyphslot_done( slot ); FT_FREE( slot ); break; } cur = cur->next; } } } /* documentation is in freetype.h */ FT_EXPORT_DEF( void ) FT_Set_Transform( FT_Face face, FT_Matrix* matrix, FT_Vector* delta ) { FT_Face_Internal internal; if ( !face ) return; internal = face->internal; internal->transform_flags = 0; if ( !matrix ) { internal->transform_matrix.xx = 0x10000L; internal->transform_matrix.xy = 0; internal->transform_matrix.yx = 0; internal->transform_matrix.yy = 0x10000L; matrix = &internal->transform_matrix; } else internal->transform_matrix = *matrix; /* set transform_flags bit flag 0 if `matrix' isn't the identity */ if ( ( matrix->xy | matrix->yx ) || matrix->xx != 0x10000L || matrix->yy != 0x10000L ) internal->transform_flags |= 1; if ( !delta ) { internal->transform_delta.x = 0; internal->transform_delta.y = 0; delta = &internal->transform_delta; } else internal->transform_delta = *delta; /* set transform_flags bit flag 1 if `delta' isn't the null vector */ if ( delta->x | delta->y ) internal->transform_flags |= 2; } static FT_Renderer ft_lookup_glyph_renderer( FT_GlyphSlot slot ); /* 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; FT_Module hinter; if ( !face || !face->size || !face->glyph ) return FT_Err_Invalid_Face_Handle; if ( glyph_index >= (FT_UInt)face->num_glyphs ) return FT_Err_Invalid_Argument; slot = face->glyph; ft_glyphslot_clear( slot ); driver = face->driver; /* if the flag NO_RECURSE is set, we disable hinting and scaling */ if ( load_flags & FT_LOAD_NO_RECURSE ) { /* disable scaling, hinting, and transformation */ load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING | FT_LOAD_NO_BITMAP | FT_LOAD_IGNORE_TRANSFORM; /* disable bitmap rendering */ load_flags &= ~FT_LOAD_RENDER; } /* do we need to load the glyph through the auto-hinter? */ library = driver->root.library; hinter = library->auto_hinter; autohint = FT_BOOL( hinter && !( load_flags & ( FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING | FT_LOAD_NO_AUTOHINT ) ) && FT_DRIVER_IS_SCALABLE( driver ) && FT_DRIVER_USES_OUTLINES( driver ) ); if ( autohint ) { if ( FT_DRIVER_HAS_HINTER( driver ) && !( load_flags & FT_LOAD_FORCE_AUTOHINT ) ) autohint = 0; } if ( autohint ) { FT_AutoHinter_Service 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; } /* load auto-hinted outline */ hinting = (FT_AutoHinter_Service)hinter->clazz->module_interface; error = hinting->load_glyph( (FT_AutoHinter)hinter, slot, face->size, glyph_index, load_flags ); } else { error = driver->clazz->load_glyph( slot, face->size, glyph_index, load_flags ); if ( error ) goto Exit; /* check that the loaded outline is correct */ error = FT_Outline_Check( &slot->outline ); if ( error ) goto Exit; } 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 && ( face->face_flags & FT_FACE_FLAG_SCALABLE ) ) { FT_UInt EM = face->units_per_EM; FT_Size_Metrics* metrics = &face->size->metrics; slot->linearHoriAdvance = FT_MulDiv( slot->linearHoriAdvance, (FT_Long)metrics->x_ppem << 16, EM ); slot->linearVertAdvance = FT_MulDiv( slot->linearVertAdvance, (FT_Long)metrics->y_ppem << 16, EM ); } 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 ); /* transform advance */ FT_Vector_Transform( &slot->advance, &internal->transform_matrix ); } } /* 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_Err_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 ); } /* 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 = 0; /* now discard client data */ if ( face->generic.finalizer ) face->generic.finalizer( face ); /* discard charmaps */ { FT_Int n; for ( n = 0; n < face->num_charmaps; n++ ) { FT_CMap cmap = FT_CMAP( face->charmaps[n] ); FT_CMap_Done( cmap ); face->charmaps[n] = NULL; } FT_FREE( face->charmaps ); face->num_charmaps = 0; } /* finalize format-specific stuff */ if ( clazz->done_face ) clazz->done_face( face ); /* close the stream for this face if needed */ ft_input_stream_free( face->stream, ( face->face_flags & FT_FACE_FLAG_EXTERNAL_STREAM ) != 0 ); face->stream = 0; /* 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 ); /* check whether we need to drop the driver's glyph loader */ if ( FT_DRIVER_USES_OUTLINES( driver ) ) FT_GlyphLoader_Done( driver->glyph_loader ); } /*************************************************************************/ /* */ /* <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; FT_CharMap* unicmap = NULL; /* some UCS-2 map, if we found it */ /* caller should have already checked that `face' is valid */ FT_ASSERT ( face ); first = face->charmaps; if ( !first ) return FT_Err_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 id's 3,10, is normally the */ /* last one, we loop backwards. This looses 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 ) { unicmap = cur; /* record we found a Unicode charmap */ /* 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 ) ) /* Hurray! We found a UCS-4 charmap. We can stop the scan! */ { face->charmap = cur[0]; return 0; } } } /* We do not have any UCS-4 charmap. Sigh. */ /* Let's see if we have some other kind of Unicode charmap, though. */ if ( unicmap != NULL ) { face->charmap = unicmap[0]; return 0; } /* Chou blanc! */ return FT_Err_Invalid_CharMap_Handle; } /*************************************************************************/ /* */ /* <Function> */ /* open_face */ /* */ /* <Description> */ /* This function does some work for FT_Open_Face(). */ /* */ static FT_Error open_face( FT_Driver driver, FT_Stream 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 = 0; FT_Error error, error2; FT_Face_Internal internal; 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; if ( FT_NEW( internal ) ) goto Fail; face->internal = internal; face->driver = driver; face->memory = memory; face->stream = stream; #ifdef FT_CONFIG_OPTION_INCREMENTAL { int i; face->internal->incremental_interface = 0; for ( i = 0; i < num_params && !face->internal->incremental_interface; i++ ) if ( params[i].tag == FT_PARAM_TAG_INCREMENTAL ) face->internal->incremental_interface = params[i].data; } #endif error = clazz->init_face( stream, face, (FT_Int)face_index, num_params, params ); 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 && error2 != FT_Err_Invalid_CharMap_Handle ) { error = error2; goto Fail; } *aface = face; Fail: if ( error ) { clazz->done_face( face ); FT_FREE( internal ); FT_FREE( face ); *aface = 0; } 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_Err_Invalid_Argument; args.flags = FT_OPEN_PATHNAME; args.pathname = (char*)pathname; return FT_Open_Face( library, &args, face_index, aface ); } #endif /* !FT_MACINTOSH */ /* 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_Err_Invalid_Argument; args.flags = FT_OPEN_MEMORY; args.memory_base = file_base; args.memory_size = file_size; return FT_Open_Face( library, &args, face_index, aface ); } #if !defined( FT_MACINTOSH ) && defined( 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 = 0; stream->close = 0; } /* 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; if ( !library ) return FT_Err_Invalid_Library_Handle; if ( !base ) return FT_Err_Invalid_Argument; *astream = 0; 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 */ static 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; 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 ); } error = FT_Open_Face( library, &args, face_index, aface ); if ( error == FT_Err_Ok ) (*aface)->face_flags &= ~FT_FACE_FLAG_EXTERNAL_STREAM; else { FT_Stream_Close( stream ); FT_FREE( stream ); } return error; } /* 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 resource_listoffset, FT_Long resource_cnt, FT_Long resource_data, FT_Long face_index, FT_Face *aface ) { FT_Error error = FT_Err_Cannot_Open_Resource; FT_Memory memory = library->memory; FT_Byte* pfb_data; int i, type, flags, len; FT_Long pfb_len, pfb_pos, pfb_lenpos; FT_Long rlen, junk, temp; FT_Long *offsets; if ( face_index == -1 ) face_index = 0; if ( face_index != 0 ) return error; if ( FT_ALLOC( offsets, (FT_Long)resource_cnt * sizeof ( FT_Long ) ) ) return error; error = FT_Stream_Seek( stream, resource_listoffset ); if ( error ) goto Exit; /* Find all the POST resource offsets */ for ( i = 0; i < resource_cnt; ++i ) { (void)FT_READ_USHORT( junk ); /* resource id */ (void)FT_READ_USHORT( junk ); /* rsource name */ if ( FT_READ_LONG( temp ) ) goto Exit; offsets[i] = resource_data + ( temp & 0xFFFFFFL ); (void)FT_READ_LONG( junk ); /* mbz */ } /* 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, offsets[i] ); if ( error ) goto Exit; if ( FT_READ_LONG( temp ) ) goto Exit; pfb_len += temp + 6; } 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 = 7; pfb_lenpos = 2; len = 0; type = 1; for ( i = 0; i < resource_cnt; ++i ) { error = FT_Stream_Seek( stream, offsets[i] ); if ( error ) goto Exit2; if ( FT_READ_LONG( rlen ) ) goto Exit; if ( FT_READ_USHORT( flags ) ) goto Exit; rlen -= 2; /* the flags are part of the resource */ if ( ( flags >> 8 ) == type ) len += rlen; else { 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; pfb_data[pfb_pos++] = 0x80; type = flags >> 8; len = rlen; pfb_data[pfb_pos++] = (FT_Byte)type; pfb_lenpos = (FT_Byte)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; } error = FT_Stream_Read( stream, (FT_Byte *)pfb_data + pfb_pos, rlen ); pfb_pos += rlen; } pfb_data[pfb_pos++] = 0x80; pfb_data[pfb_pos++] = 3; 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: FT_FREE( pfb_data ); Exit: FT_FREE( offsets ); 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 the the truetype driver and return it. */ /* */ static FT_Error Mac_Read_sfnt_Resource( FT_Library library, FT_Stream stream, FT_Long resource_listoffset, FT_Long resource_cnt, FT_Long resource_data, FT_Long face_index, FT_Face *aface ) { FT_Memory memory = library->memory; FT_Byte* sfnt_data; FT_Error error; int i; FT_Long flag_offset= 0xFFFFFFL; FT_Long rlen, junk; int is_cff; if ( face_index == -1 ) face_index = 0; if ( face_index >= resource_cnt ) return FT_Err_Cannot_Open_Resource; error = FT_Stream_Seek( stream, resource_listoffset ); if ( error ) goto Exit; for ( i = 0; i <= face_index; ++i ) { (void)FT_READ_USHORT( junk ); /* resource id */ (void)FT_READ_USHORT( junk ); /* rsource name */ if ( FT_READ_LONG( flag_offset ) ) goto Exit; flag_offset &= 0xFFFFFFL; (void)FT_READ_LONG( junk ); /* mbz */ } if ( flag_offset == 0xFFFFFFL ) return FT_Err_Cannot_Open_Resource; error = FT_Stream_Seek( stream, flag_offset + resource_data ); if ( error ) goto Exit; if ( FT_READ_LONG( rlen ) ) goto Exit; if ( rlen == -1 ) return FT_Err_Cannot_Open_Resource; if ( FT_ALLOC( sfnt_data, (FT_Long)rlen ) ) return error; error = FT_Stream_Read( stream, (FT_Byte *)sfnt_data, rlen ); if ( error ) goto Exit; is_cff = rlen > 4 && sfnt_data[0] == 'O' && sfnt_data[1] == 'T' && sfnt_data[2] == 'T' && sfnt_data[3] == 'O'; error = open_face_from_buffer( library, sfnt_data, rlen, face_index, 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_Error error; unsigned char head[16], head2[16]; FT_Long rdata_pos, map_pos, rdata_len, map_len; int allzeros, allmatch, i, cnt, subcnt; FT_Long type_list, rpos, junk; FT_ULong tag; error = FT_Stream_Seek( stream, resource_offset ); if ( error ) goto Exit; error = FT_Stream_Read( stream, (FT_Byte *)head, 16 ); if ( error ) goto Exit; rdata_pos = resource_offset + ( ( head[0] << 24 ) | ( head[1] << 16 ) | ( head[2] << 8 ) | head[3] ); map_pos = resource_offset + ( ( head[4] << 24 ) | ( head[5] << 16 ) | ( head[6] << 8 ) | head[7] ); rdata_len = ( head[ 8] << 24 ) | ( head[ 9] << 16 ) | ( head[10] << 8 ) | head[11]; map_len = ( head[12] << 24 ) | ( head[13] << 16 ) | ( head[14] << 8 ) | head[15]; if ( rdata_pos + rdata_len != map_pos || map_pos == resource_offset ) return FT_Err_Unknown_File_Format; error = FT_Stream_Seek( stream, map_pos ); if ( error ) goto Exit; head2[15] = (FT_Byte)( head[15] + 1 ); /* make it be different */ error = FT_Stream_Read( stream, (FT_Byte*)head2, 16 ); if ( error ) goto Exit; allzeros = 1; allmatch = 1; for ( i = 0; i < 16; ++i ) { if ( head2[i] != 0 ) allzeros = 0; if ( head2[i] != head[i] ) allmatch = 0; } if ( !allzeros && !allmatch ) return FT_Err_Unknown_File_Format; /* If we've gotten this far then it's probably a mac resource file. */ /* Now, does it contain any interesting resources? */ (void)FT_READ_LONG( junk ); /* skip handle to next resource map */ (void)FT_READ_USHORT( junk ); /* skip file resource number */ (void)FT_READ_USHORT( junk ); /* skip attributes */ if ( FT_READ_USHORT( type_list ) ) goto Exit; if ( type_list == -1 ) return FT_Err_Unknown_File_Format; error = FT_Stream_Seek( stream, map_pos + type_list ); if ( error ) goto Exit; if ( FT_READ_USHORT( cnt ) ) goto Exit; ++cnt; for ( i = 0; i < cnt; ++i ) { if ( FT_READ_LONG( tag ) || FT_READ_USHORT( subcnt ) || FT_READ_USHORT( rpos ) ) goto Exit; ++subcnt; rpos += map_pos + type_list; if ( tag == FT_MAKE_TAG( 'P', 'O', 'S', 'T' ) ) return Mac_Read_POST_Resource( library, stream, rpos, subcnt, rdata_pos, face_index, aface ); else if ( tag == FT_MAKE_TAG( 's', 'f', 'n', 't' ) ) return Mac_Read_sfnt_Resource( library, stream, rpos, subcnt, rdata_pos, face_index, aface ); } error = FT_Err_Cannot_Open_Resource; /* this file contains no interesting resources */ Exit: 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; 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 ) return FT_Err_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; } /* Check for some macintosh formats */ /* 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 if we're on Mac OS/X, open the resource fork explicitly. */ /* */ 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_ERROR_BASE( error ) == FT_Err_Unknown_File_Format ) error = IsMacResource( library, stream, 0, face_index, aface ); #ifdef FT_MACINTOSH /* I know this section is within code which is normally turned off for the Mac. It provides an alternative approach to reading the mac resource forks on OS/X in the event that a user does not wish to compile ftmac.c. */ if ( ( FT_ERROR_BASE( error ) == FT_Err_Unknown_File_Format || FT_ERROR_BASE( error ) == FT_Err_Invalid_Stream_Operation ) && ( args->flags & FT_OPEN_PATHNAME ) ) { FT_Open_Args args2; char* newpath; FT_Memory memory; FT_Stream stream2; memory = library->memory; FT_ALLOC( newpath, ft_strlen( args->pathname ) + ft_strlen( "/rsrc" ) + 1 ); ft_strcpy( newpath, args->pathname ); ft_strcat( newpath, "/rsrc" ); args2.flags = FT_OPEN_PATHNAME; args2.pathname = (char*)newpath; error = ft_input_stream_new( library, &args2, &stream2 ); if ( !error ) { error = IsMacResource( library, stream2, 0, face_index, aface ); FT_Stream_Close( stream2 ); } FT_FREE( newpath ); } #endif /* FT_MACINTOSH */ return error; } #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; FT_Memory memory; FT_Stream stream; FT_Face face = 0; FT_ListNode node = 0; FT_Bool external_stream; /* test for valid `library' delayed to */ /* ft_input_stream_new() */ if ( !aface || !args ) return FT_Err_Invalid_Argument; *aface = 0; external_stream = FT_BOOL( ( args->flags & FT_OPEN_STREAM ) && args->stream ); /* create input stream */ error = ft_input_stream_new( library, args, &stream ); if ( error ) goto Exit; 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 = 0; if ( args->flags & FT_OPEN_PARAMS ) { num_params = args->num_params; params = args->params; } error = open_face( driver, stream, face_index, num_params, params, &face ); if ( !error ) goto Success; } else error = FT_Err_Invalid_Handle; ft_input_stream_free( stream, external_stream ); goto Fail; } else { /* check each font driver for an appropriate format */ FT_Module* cur = library->modules; FT_Module* 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 = 0; driver = FT_DRIVER( cur[0] ); if ( args->flags & FT_OPEN_PARAMS ) { num_params = args->num_params; params = args->params; } error = open_face( driver, stream, face_index, num_params, params, &face ); if ( !error ) goto Success; if ( FT_ERROR_BASE( error ) != FT_Err_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_ERROR_BASE( error ) != FT_Err_Unknown_File_Format && FT_ERROR_BASE( error ) != FT_Err_Invalid_Stream_Operation ) goto Fail2; #ifndef FT_MACINTOSH 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_input_stream_free( stream, external_stream ); return error; } if ( FT_ERROR_BASE( error ) != FT_Err_Unknown_File_Format ) goto Fail2; #endif /* !FT_MACINTOSH */ /* no driver is able to handle this format */ error = FT_Err_Unknown_File_Format; Fail2: ft_input_stream_free( stream, external_stream ); goto Fail; } Success: FT_TRACE4(( "FT_Open_Face: New face object, adding to list\n" )); /* set the FT_FACE_FLAG_EXTERNAL_STREAM bit for FT_Done_Face */ if ( external_stream ) face->face_flags |= FT_FACE_FLAG_EXTERNAL_STREAM; /* 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_GlyphSlot slot; FT_TRACE4(( "FT_Open_Face: Creating glyph slot\n" )); error = FT_New_GlyphSlot( face, &slot ); if ( error ) goto Fail; face->glyph = slot; } /* 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; } /* 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; } *aface = face; goto Exit; Fail: FT_Done_Face( face ); 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_Err_Invalid_Argument; 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_input_stream_new() */ if ( !face ) return FT_Err_Invalid_Face_Handle; driver = face->driver; if ( !driver ) return FT_Err_Invalid_Driver_Handle; error = ft_input_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_input_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_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 ) { 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 = 0; FT_ListNode node = 0; if ( !face ) return FT_Err_Invalid_Face_Handle; if ( !asize ) return FT_Err_Invalid_Size_Handle; if ( !face->driver ) return FT_Err_Invalid_Driver_Handle; *asize = 0; 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 = 0; 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_Err_Invalid_Size_Handle; face = size->face; if ( !face ) return FT_Err_Invalid_Face_Handle; driver = face->driver; if ( !driver ) return FT_Err_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 = 0; if ( face->sizes_list.head ) face->size = (FT_Size)(face->sizes_list.head->data); } destroy_size( memory, size, driver ); } else error = FT_Err_Invalid_Size_Handle; return error; } static void ft_recompute_scaled_metrics( FT_Face face, FT_Size_Metrics* metrics ) { /* Compute root ascender, descender, test height, and max_advance */ metrics->ascender = ( FT_MulFix( face->ascender, metrics->y_scale ) + 63 ) & -64; metrics->descender = ( FT_MulFix( face->descender, metrics->y_scale ) + 0 ) & -64; metrics->height = ( FT_MulFix( face->height, metrics->y_scale ) + 32 ) & -64; metrics->max_advance = ( FT_MulFix( face->max_advance_width, metrics->x_scale ) + 32 ) & -64; } /* 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_Error error = FT_Err_Ok; FT_Driver driver; FT_Driver_Class clazz; FT_Size_Metrics* metrics; FT_Long dim_x, dim_y; if ( !face || !face->size || !face->driver ) return FT_Err_Invalid_Face_Handle; driver = face->driver; metrics = &face->size->metrics; clazz = driver->clazz; if ( !char_width ) char_width = char_height; else if ( !char_height ) char_height = char_width; if ( !horz_resolution ) horz_resolution = 72; if ( !vert_resolution ) vert_resolution = 72; /* default processing -- this can be overridden by the driver */ if ( char_width < 1 * 64 ) char_width = 1 * 64; if ( char_height < 1 * 64 ) char_height = 1 * 64; /* Compute pixel sizes in 26.6 units with rounding */ dim_x = ( ( char_width * horz_resolution + (36+32*72) ) / 72 ) & -64; dim_y = ( ( char_height * vert_resolution + (36+32*72) ) / 72 ) & -64; metrics->x_ppem = (FT_UShort)( dim_x >> 6 ); metrics->y_ppem = (FT_UShort)( dim_y >> 6 ); metrics->x_scale = 0x10000L; metrics->y_scale = 0x10000L; if ( face->face_flags & FT_FACE_FLAG_SCALABLE ) { metrics->x_scale = FT_DivFix( dim_x, face->units_per_EM ); metrics->y_scale = FT_DivFix( dim_y, face->units_per_EM ); ft_recompute_scaled_metrics( face, metrics ); } if ( clazz->set_char_sizes ) error = clazz->set_char_sizes( face->size, char_width, char_height, horz_resolution, vert_resolution ); return error; } /* 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_Error error = FT_Err_Ok; FT_Driver driver; FT_Driver_Class clazz; FT_Size_Metrics* metrics; if ( !face || !face->size || !face->driver ) return FT_Err_Invalid_Face_Handle; driver = face->driver; metrics = &face->size->metrics; clazz = driver->clazz; /* default processing -- this can be overridden by the driver */ 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; metrics->x_ppem = (FT_UShort)pixel_width; metrics->y_ppem = (FT_UShort)pixel_height; if ( face->face_flags & FT_FACE_FLAG_SCALABLE ) { metrics->x_scale = FT_DivFix( metrics->x_ppem << 6, face->units_per_EM ); metrics->y_scale = FT_DivFix( metrics->y_ppem << 6, face->units_per_EM ); ft_recompute_scaled_metrics( face, metrics ); } if ( clazz->set_pixel_sizes ) error = clazz->set_pixel_sizes( face->size, pixel_width, pixel_height ); return error; } /* 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_Err_Invalid_Face_Handle; if ( !akerning ) return FT_Err_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 ) { akerning->x = ( akerning->x + 32 ) & -64; akerning->y = ( akerning->y + 32 ) & -64; } } } } 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_Err_Invalid_Face_Handle; /* 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_Err_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_Err_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_Err_Invalid_Face_Handle; cur = face->charmaps; if ( !cur ) return FT_Err_Invalid_CharMap_Handle; limit = cur + face->num_charmaps; for ( ; cur < limit; cur++ ) { if ( cur[0] == charmap ) { face->charmap = cur[0]; return 0; } } return FT_Err_Invalid_Argument; } FT_BASE_DEF( void ) FT_CMap_Done( FT_CMap cmap ) { if ( 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( FT_Error ) FT_CMap_New( FT_CMap_Class clazz, FT_Pointer init_data, FT_CharMap charmap, FT_CMap *acmap ) { FT_Error error = 0; FT_Face face; FT_Memory memory; FT_CMap cmap; if ( clazz == NULL || charmap == NULL || charmap->face == NULL ) return FT_Err_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( 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 ); result = cmap->clazz->char_index( cmap, charcode ); } 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; if ( face && face->charmap ) { 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 ) { FT_UInt32 code = (FT_UInt32)charcode; FT_CMap cmap = FT_CMAP( face->charmap ); gindex = cmap->clazz->char_next( cmap, &code ); result = ( gindex == 0 ) ? 0 : code; } if ( agindex ) *agindex = gindex; 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 ) ) { FT_Service_GlyphDict service; #if 0 FT_FACE_LOOKUP_SERVICE( face, FT_Service_GlyphDict, service, glyph_dict, FT_SERVICE_ID_GLYPH_DICT ); #else service = (FT_Service_GlyphDict)face->internal->services.glyph_dict; if ( service == FT_SERVICE_UNAVAILABLE ) service = NULL; else if ( service == NULL ) { FT_Module module = FT_MODULE( face->driver ); if ( module->clazz->get_interface ) service = (FT_Service_GlyphDict)module->clazz->get_interface( module, FT_SERVICE_ID_GLYPH_DICT ); face->internal->services.glyph_dict = service != NULL ? (FT_Pointer)service : FT_SERVICE_UNAVAILABLE; } #endif /* 1 */ 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_Err_Invalid_Argument; /* clean up buffer */ if ( buffer && buffer_max > 0 ) ((FT_Byte*)buffer)[0] = 0; if ( face && glyph_index <= (FT_UInt)face->num_glyphs && FT_HAS_GLYPH_NAMES( face ) ) { FT_Service_GlyphDict service; FT_FACE_LOOKUP_SERVICE( face, FT_Service_GlyphDict, service, glyph_dict, FT_SERVICE_ID_GLYPH_DICT ); if ( service && service->get_name ) error = service->get_name( face, glyph_index, buffer, buffer_max ); } 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_PsName service; FT_FACE_LOOKUP_SERVICE( face, FT_Service_PsName, service, postscript_name, FT_SERVICE_ID_POSTSCRIPT_NAME ); if ( service && service->get_ps_name ) result = service->get_ps_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 = 0; FT_Service_SFNT_Table service; if ( face && FT_IS_SFNT( face ) ) { FT_FACE_FIND_SERVICE( FT_Service_SFNT_Table, service, face, FT_SERVICE_ID_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_Err_Invalid_Face_Handle; FT_FACE_FIND_SERVICE( FT_Service_SFNT_Table, service, face, FT_SERVICE_ID_SFNT_TABLE ); if ( service == NULL ) return FT_Err_Unimplemented_Feature; return service->load_table( face, tag, offset, buffer, length ); } FT_EXPORT_DEF( FT_Error ) FT_Activate_Size( FT_Size size ) { FT_Face face; if ( size == NULL ) return FT_Err_Bad_Argument; face = size->face; if ( face == NULL || face->driver == NULL ) return FT_Err_Bad_Argument; /* 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 = 0; if ( !library ) goto Exit; cur = library->renderers.head; if ( node ) { if ( *node ) cur = (*node)->next; *node = 0; } 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; 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 = module->library; FT_Memory memory = library->memory; FT_ListNode node; node = FT_List_Find( &library->renderers, module ); if ( node ) { FT_Renderer render = FT_RENDERER( module ); /* release raster object, if any */ if ( 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; if ( !library ) return FT_Err_Invalid_Library_Handle; if ( !renderer ) return FT_Err_Invalid_Argument; node = FT_List_Find( &library->renderers, renderer ); if ( !node ) { error = FT_Err_Invalid_Argument; goto Exit; } FT_List_Up( &library->renderers, node ); if ( renderer->glyph_format == FT_GLYPH_FORMAT_OUTLINE ) library->cur_renderer = renderer; if ( num_params > 0 ) { FT_Renderer_SetModeFunc set_mode = renderer->clazz->set_mode; for ( ; num_params > 0; num_params-- ) { error = set_mode( renderer, parameters->tag, parameters->data ); if ( error ) break; } } 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 = 0; FT_Bool update = 0; /* 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_ERROR_BASE( error ) != FT_Err_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 ); update = 1; } /* if we changed the current renderer for the glyph image format */ /* we need to select it as the next current one */ if ( !error && update && renderer ) FT_Set_Renderer( library, renderer, 0, 0 ); } } 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 ) return FT_Err_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; /* finalize client-data - before anything else */ if ( module->generic.finalizer ) module->generic.finalizer( module ); if ( library && library->auto_hinter == module ) library->auto_hinter = 0; /* 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 ftmodule.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_Err_Invalid_Library_Handle; if ( !clazz ) return FT_Err_Invalid_Argument; /* check freetype version */ if ( clazz->module_requires > FREETYPE_VER_FIXED ) return FT_Err_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_Err_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_Err_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 ) ) { /* allocate glyph loader if needed */ FT_Driver driver = FT_DRIVER( module ); driver->clazz = (FT_Driver_Class)module->clazz; if ( FT_DRIVER_USES_OUTLINES( driver ) ) { error = FT_GlyphLoader_New( memory, &driver->glyph_loader ); if ( error ) goto Fail; } } 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_DRIVER( module ) ) { FT_Driver driver = FT_DRIVER( module ); if ( FT_DRIVER_USES_OUTLINES( driver ) ) FT_GlyphLoader_Done( driver->glyph_loader ); } if ( FT_MODULE_IS_RENDERER( module ) ) { FT_Renderer renderer = FT_RENDERER( module ); if ( renderer->raster ) renderer->clazz->raster_class->raster_done( renderer->raster ); } FT_FREE( module ); goto Exit; } /* documentation is in ftmodule.h */ FT_EXPORT_DEF( FT_Module ) FT_Get_Module( FT_Library library, const char* module_name ) { FT_Module result = 0; 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; } /* documentation is in ftmodule.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_Err_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] = 0; /* destroy the module */ Destroy_Module( module ); return FT_Err_Ok; } } } return FT_Err_Invalid_Driver_Handle; } /*************************************************************************/ /*************************************************************************/ /*************************************************************************/ /**** ****/ /**** ****/ /**** L I B R A R Y ****/ /**** ****/ /**** ****/ /*************************************************************************/ /*************************************************************************/ /*************************************************************************/ /* documentation is in ftmodule.h */ FT_EXPORT_DEF( FT_Error ) FT_New_Library( FT_Memory memory, FT_Library *alibrary ) { FT_Library library = 0; FT_Error error; if ( !memory ) return FT_Err_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; /* allocate the render pool */ library->raster_pool_size = FT_RENDER_POOL_SIZE; if ( FT_ALLOC( library->raster_pool, FT_RENDER_POOL_SIZE ) ) goto Fail; /* That's ok now */ *alibrary = library; return FT_Err_Ok; Fail: 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 ftmodule.h */ FT_EXPORT_DEF( FT_Error ) FT_Done_Library( FT_Library library ) { FT_Memory memory; if ( !library ) return FT_Err_Invalid_Library_Handle; memory = library->memory; /* Discard client-data */ if ( library->generic.finalizer ) library->generic.finalizer( library ); /* Close all modules in the library */ #if 1 while ( library->num_modules > 0 ) FT_Remove_Module( library, library->modules[0] ); #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] = 0; } } } #endif /* Destroy raster objects */ FT_FREE( library->raster_pool ); library->raster_pool_size = 0; FT_FREE( library ); return FT_Err_Ok; } /* documentation is in ftmodule.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; } /* END */