📄 ftmac.c
字号:
}
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 );
}
/* At this point, face_index has served its purpose; */
/* whoever calls this function has already used it to */
/* locate the correct font data. We should not propagate */
/* this index to FT_Open_Face() (unless it is negative). */
if ( face_index > 0 )
face_index = 0;
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_Free( stream, 0 );
return error;
}
/* Create a new FT_Face from a file spec to an LWFN file. */
static FT_Error
FT_New_Face_From_LWFN( FT_Library library,
const UInt8* pathname,
FT_Long face_index,
FT_Face* aface )
{
FT_Byte* pfb_data;
FT_ULong pfb_size;
FT_Error error;
short res;
if ( noErr != FT_FSPathMakeRes( pathname, &res ) )
return FT_Err_Cannot_Open_Resource;
pfb_data = NULL;
pfb_size = 0;
error = read_lwfn( library->memory, res, &pfb_data, &pfb_size );
CloseResFile( res ); /* PFB is already loaded, useless anymore */
if ( error )
return error;
return open_face_from_buffer( library,
pfb_data,
pfb_size,
face_index,
"type1",
aface );
}
/* Create a new FT_Face from an SFNT resource, specified by res ID. */
static FT_Error
FT_New_Face_From_SFNT( FT_Library library,
short sfnt_id,
FT_Long face_index,
FT_Face* aface )
{
Handle sfnt = NULL;
FT_Byte* sfnt_data;
size_t sfnt_size;
FT_Error error = FT_Err_Ok;
FT_Memory memory = library->memory;
int is_cff;
sfnt = GetResource( 'sfnt', sfnt_id );
if ( ResError() )
return FT_Err_Invalid_Handle;
sfnt_size = (FT_ULong)GetHandleSize( sfnt );
if ( FT_ALLOC( sfnt_data, (FT_Long)sfnt_size ) )
{
ReleaseResource( sfnt );
return error;
}
HLock( sfnt );
ft_memcpy( sfnt_data, *sfnt, sfnt_size );
HUnlock( sfnt );
ReleaseResource( sfnt );
is_cff = sfnt_size > 4 && sfnt_data[0] == 'O' &&
sfnt_data[1] == 'T' &&
sfnt_data[2] == 'T' &&
sfnt_data[3] == 'O';
return open_face_from_buffer( library,
sfnt_data,
sfnt_size,
face_index,
is_cff ? "cff" : "truetype",
aface );
}
/* Create a new FT_Face from a file spec to a suitcase file. */
static FT_Error
FT_New_Face_From_Suitcase( FT_Library library,
const UInt8* pathname,
FT_Long face_index,
FT_Face* aface )
{
FT_Error error = FT_Err_Cannot_Open_Resource;
short res_ref, res_index;
Handle fond;
short num_faces_in_res, num_faces_in_fond;
if ( noErr != FT_FSPathMakeRes( pathname, &res_ref ) )
return FT_Err_Cannot_Open_Resource;
UseResFile( res_ref );
if ( ResError() )
return FT_Err_Cannot_Open_Resource;
num_faces_in_res = 0;
for ( res_index = 1; ; ++res_index )
{
fond = Get1IndResource( 'FOND', res_index );
if ( ResError() )
break;
num_faces_in_fond = count_faces( fond, pathname );
num_faces_in_res += num_faces_in_fond;
if ( 0 <= face_index && face_index < num_faces_in_fond && error )
error = FT_New_Face_From_FOND( library, fond, face_index, aface );
face_index -= num_faces_in_fond;
}
CloseResFile( res_ref );
if ( FT_Err_Ok == error && NULL != aface )
(*aface)->num_faces = num_faces_in_res;
return error;
}
/* documentation is in ftmac.h */
FT_EXPORT_DEF( FT_Error )
FT_New_Face_From_FOND( FT_Library library,
Handle fond,
FT_Long face_index,
FT_Face* aface )
{
short sfnt_id, have_sfnt, have_lwfn = 0;
short fond_id;
OSType fond_type;
Str255 fond_name;
Str255 lwfn_file_name;
UInt8 path_lwfn[HFS_MAXPATHLEN];
OSErr err;
FT_Error error = FT_Err_Ok;
GetResInfo( fond, &fond_id, &fond_type, fond_name );
if ( ResError() != noErr || fond_type != 'FOND' )
return FT_Err_Invalid_File_Format;
HLock( fond );
parse_fond( *fond, &have_sfnt, &sfnt_id, lwfn_file_name, face_index );
HUnlock( fond );
if ( lwfn_file_name[0] )
{
short res;
res = HomeResFile( fond );
if ( noErr != ResError() )
goto found_no_lwfn_file;
{
UInt8 path_fond[HFS_MAXPATHLEN];
FSRef ref;
err = FSGetForkCBInfo( res, kFSInvalidVolumeRefNum,
NULL, NULL, NULL, &ref, NULL );
if ( noErr != err )
goto found_no_lwfn_file;
err = FSRefMakePath( &ref, path_fond, sizeof ( path_fond ) );
if ( noErr != err )
goto found_no_lwfn_file;
error = lookup_lwfn_by_fond( path_fond, lwfn_file_name,
path_lwfn, sizeof ( path_lwfn ) );
if ( FT_Err_Ok == error )
have_lwfn = 1;
}
}
if ( have_lwfn && ( !have_sfnt || PREFER_LWFN ) )
error = FT_New_Face_From_LWFN( library,
path_lwfn,
face_index,
aface );
else
error = FT_Err_Unknown_File_Format;
found_no_lwfn_file:
if ( have_sfnt && FT_Err_Ok != error )
error = FT_New_Face_From_SFNT( library,
sfnt_id,
face_index,
aface );
return error;
}
/* Common function to load a new FT_Face from a resource file. */
static FT_Error
FT_New_Face_From_Resource( FT_Library library,
const UInt8* pathname,
FT_Long face_index,
FT_Face* aface )
{
OSType file_type;
FT_Error error;
/* LWFN is a (very) specific file format, check for it explicitly */
file_type = get_file_type_from_path( pathname );
if ( file_type == 'LWFN' )
return FT_New_Face_From_LWFN( library, pathname, face_index, aface );
/* Otherwise the file type doesn't matter (there are more than */
/* `FFIL' and `tfil'). Just try opening it as a font suitcase; */
/* if it works, fine. */
error = FT_New_Face_From_Suitcase( library, pathname, face_index, aface );
if ( error == 0 )
return error;
/* let it fall through to normal loader (.ttf, .otf, etc.); */
/* we signal this by returning no error and no FT_Face */
*aface = NULL;
return 0;
}
/*************************************************************************/
/* */
/* <Function> */
/* FT_New_Face */
/* */
/* <Description> */
/* This is the Mac-specific implementation of FT_New_Face. In */
/* addition to the standard FT_New_Face() functionality, it also */
/* accepts pathnames to Mac suitcase files. For further */
/* documentation see the original FT_New_Face() 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;
FT_Error error;
/* test for valid `library' and `aface' delayed to FT_Open_Face() */
if ( !pathname )
return FT_Err_Invalid_Argument;
error = FT_Err_Ok;
*aface = NULL;
/* try resourcefork based font: LWFN, FFIL */
error = FT_New_Face_From_Resource( library, (UInt8 *)pathname,
face_index, aface );
if ( error != 0 || *aface != NULL )
return error;
/* let it fall through to normal loader (.ttf, .otf, etc.) */
args.flags = FT_OPEN_PATHNAME;
args.pathname = (char*)pathname;
return FT_Open_Face( library, &args, face_index, aface );
}
/*************************************************************************/
/* */
/* <Function> */
/* FT_New_Face_From_FSRef */
/* */
/* <Description> */
/* FT_New_Face_From_FSRef is identical to FT_New_Face except it */
/* accepts an FSRef instead of a path. */
/* */
FT_EXPORT_DEF( FT_Error )
FT_New_Face_From_FSRef( FT_Library library,
const FSRef* ref,
FT_Long face_index,
FT_Face* aface )
{
FT_Error error;
FT_Open_Args args;
OSErr err;
UInt8 pathname[HFS_MAXPATHLEN];
if ( !ref )
return FT_Err_Invalid_Argument;
err = FSRefMakePath( ref, pathname, sizeof ( pathname ) );
if ( err )
error = FT_Err_Cannot_Open_Resource;
error = FT_New_Face_From_Resource( library, pathname, face_index, aface );
if ( error != 0 || *aface != NULL )
return error;
/* fallback to datafork font */
args.flags = FT_OPEN_PATHNAME;
args.pathname = (char*)pathname;
return FT_Open_Face( library, &args, face_index, aface );
}
/*************************************************************************/
/* */
/* <Function> */
/* FT_New_Face_From_FSSpec */
/* */
/* <Description> */
/* FT_New_Face_From_FSSpec is identical to FT_New_Face except it */
/* accepts an FSSpec instead of a path. */
/* */
FT_EXPORT_DEF( FT_Error )
FT_New_Face_From_FSSpec( FT_Library library,
const FSSpec* spec,
FT_Long face_index,
FT_Face* aface )
{
FSRef ref;
if ( !spec || FSpMakeFSRef( spec, &ref ) != noErr )
return FT_Err_Invalid_Argument;
else
return FT_New_Face_From_FSRef( library, &ref, face_index, aface );
}
/* END */
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -