diff options
| author | Charles Forsyth <charles.forsyth@gmail.com> | 2024-04-22 07:10:23 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-04-22 07:10:23 +0100 |
| commit | aea6a5537d424a269675969ba3653d291121984e (patch) | |
| tree | 6d8f7ede33f403786bdfa91973676c1bf833f0f7 /libfreetype/ftobjs.c | |
| parent | 73b5cba380d148e77d696880027a416cda50f756 (diff) | |
| parent | 3df3f6f7d81cd03b0f10ef557e0c96ab0f6cd702 (diff) | |
Merge pull request #12 from dboddie/update-freetype
Update FreeType to the latest code
Diffstat (limited to 'libfreetype/ftobjs.c')
| -rw-r--r-- | libfreetype/ftobjs.c | 2505 |
1 files changed, 0 insertions, 2505 deletions
diff --git a/libfreetype/ftobjs.c b/libfreetype/ftobjs.c deleted file mode 100644 index 4f53ca14..00000000 --- a/libfreetype/ftobjs.c +++ /dev/null @@ -1,2505 +0,0 @@ -/***************************************************************************/ -/* */ -/* ftobjs.c */ -/* */ -/* The FreeType private base classes (body). */ -/* */ -/* Copyright 1996-2001, 2002 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_TRUETYPE_TABLES_H -#include FT_OUTLINE_H - - - 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; - } - - - static void - ft_glyphslot_clear( FT_GlyphSlot slot ) - { - /* free bitmap if needed */ - if ( slot->flags & FT_GLYPH_OWN_BITMAP ) - { - FT_Memory memory = FT_FACE_MEMORY( slot->face ); - - - FT_FREE( slot->bitmap.buffer ); - slot->flags &= ~FT_GLYPH_OWN_BITMAP; - } - - /* 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 */ - if ( slot->flags & FT_GLYPH_OWN_BITMAP ) - FT_FREE( slot->bitmap.buffer ); - - /* 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; - } - - - /* documentation is in freetype.h */ - - FT_EXPORT_DEF( void ) - FT_Set_Hint_Flags( FT_Face face, - FT_ULong flags ) - { - FT_Face_Internal internal; - - if ( !face ) - return; - - internal = face->internal; - - internal->hint_flags = (FT_UInt)flags; - } - - - 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 ) - { - 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->postscript_name ); - 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> */ - /* 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; - 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 */ - { - FT_Int nn; - FT_CharMap unicmap = NULL, cmap; - - - for ( nn = 0; nn < face->num_charmaps; nn++ ) - { - cmap = face->charmaps[nn]; - - if ( cmap->encoding == FT_ENCODING_UNICODE ) - { - unicmap = cmap; - break; - } - } - - if ( unicmap != NULL ) - face->charmap = unicmap; - } - - *aface = face; - - Fail: - if ( error ) - { - clazz->done_face( face ); - FT_FREE( face->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 ); - } - - - /* 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 Fail2; - } - } - - /* 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 ) + 32 ) & -64; - - metrics->descender = ( FT_MulFix( face->descender, - metrics->y_scale ) + 32 ) & -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; - - 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; - - driver = face->driver; - clazz = driver->clazz; - - /* 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 */ - dim_x = ( ( ( char_width * horz_resolution ) / 72 ) + 32 ) & -64; - dim_y = ( ( ( char_height * vert_resolution ) / 72 ) + 32 ) & -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 = &face->size->metrics; - - - if ( !face || !face->size || !face->driver ) - return FT_Err_Invalid_Face_Handle; - - driver = face->driver; - 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; - - 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 ) ) - { - /* now, lookup for glyph name */ - FT_Driver driver = face->driver; - FT_Module_Class* clazz = FT_MODULE_CLASS( driver ); - - - if ( clazz->get_interface ) - { - FT_Face_GetGlyphNameIndexFunc requester; - - - requester = (FT_Face_GetGlyphNameIndexFunc)clazz->get_interface( - FT_MODULE( driver ), "name_index" ); - if ( requester ) - result = requester( 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 ) ) - { - /* now, lookup for glyph name */ - FT_Driver driver = face->driver; - FT_Module_Class* clazz = FT_MODULE_CLASS( driver ); - - - if ( clazz->get_interface ) - { - FT_Face_GetGlyphNameFunc requester; - - - requester = (FT_Face_GetGlyphNameFunc)clazz->get_interface( - FT_MODULE( driver ), "glyph_name" ); - if ( requester ) - error = requester( 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; - - result = face->internal->postscript_name; - if ( !result ) - { - /* now, look up glyph name */ - FT_Driver driver = face->driver; - FT_Module_Class* clazz = FT_MODULE_CLASS( driver ); - - - if ( clazz->get_interface ) - { - FT_Face_GetPostscriptNameFunc requester; - - - requester = (FT_Face_GetPostscriptNameFunc)clazz->get_interface( - FT_MODULE( driver ), "postscript_name" ); - if ( requester ) - result = requester( 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_Get_Sfnt_Table_Func func; - FT_Driver driver; - - - if ( !face || !FT_IS_SFNT( face ) ) - goto Exit; - - driver = face->driver; - func = (FT_Get_Sfnt_Table_Func)driver->root.clazz->get_interface( - FT_MODULE( driver ), "get_sfnt" ); - if ( func ) - table = func( face, tag ); - - Exit: - return table; - } - - - 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 */ |
