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[truetype] Introduce named instance access to GX fonts. 

For functions querying a face, bits 16-30 of the face index can hold
the named instance index if we have a GX font.  The indices start
with value 1; value 0 indicates font access without GX variation
data.

* include/freetype/freetype.h (FT_FaceRec): Update documentation.
* include/freetype/internal/sfnt.h: Ditto.

* src/sfnt/sfobjs.c (sfnt_init_face)
[TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Get number of named instances and
do argument checks.
(sfnt_load_face): Updated.

* src/truetype/ttobjs.c (tt_face_init)
[TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Use named instance, overwriting
the style name.

* src/base/ftobjs.c (open_face_from_buffer,
open_face_PS_from_sfnt_stream): Updated.
* src/bdf/bdfdrivr.c (BDF_Face_Init): Updated.
* src/cff/cffload.c (cff_font_load): Updated.

* src/cff/cffobjs.c (cff_face_init): Make function exit early for
pure CFF fonts if `font_index < 0'.
Updated.

* src/cid/cidobjs.c (cid_face_init): Updated.
* src/pcf/pcfdrivr.c (PCF_Face_Init): Updated.
* src/pfr/pfrobjs.c (pfr_face_init): Updated.
* src/type1/t1objs.c (T1_Face_Init): Updated.
* src/type42/t42objs.c (T42_Face_Init): Updated.
* src/winfonts/winfnt.c (fnt_face_get_dll_font, FNT_Face_Init):
Updated.

* docs/CHANGES: Updated.
This commit is contained in:
Werner Lemberg 2015-08-13 15:22:17 +02:00
parent 4afc0a54ed
commit 14d6b5d748
17 changed files with 349 additions and 74 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
ChangeLog
View File

@ -1,3 +1,43 @@
2015-08-13 Werner Lemberg <wl@gnu.org>
[truetype] Introduce named instance access to GX fonts.
For functions querying a face, bits 16-30 of the face index can hold
the named instance index if we have a GX font. The indices start
with value 1; value 0 indicates font access without GX variation
data.
* include/freetype/freetype.h (FT_FaceRec): Update documentation.
* include/freetype/internal/sfnt.h: Ditto.
* src/sfnt/sfobjs.c (sfnt_init_face)
[TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Get number of named instances and
do argument checks.
(sfnt_load_face): Updated.
* src/truetype/ttobjs.c (tt_face_init)
[TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Use named instance, overwriting
the style name.
* src/base/ftobjs.c (open_face_from_buffer,
open_face_PS_from_sfnt_stream): Updated.
* src/bdf/bdfdrivr.c (BDF_Face_Init): Updated.
* src/cff/cffload.c (cff_font_load): Updated.
* src/cff/cffobjs.c (cff_face_init): Make function exit early for
pure CFF fonts if `font_index < 0'.
Updated.
* src/cid/cidobjs.c (cid_face_init): Updated.
* src/pcf/pcfdrivr.c (PCF_Face_Init): Updated.
* src/pfr/pfrobjs.c (pfr_face_init): Updated.
* src/type1/t1objs.c (T1_Face_Init): Updated.
* src/type42/t42objs.c (T42_Face_Init): Updated.
* src/winfonts/winfnt.c (fnt_face_get_dll_font, FNT_Face_Init):
Updated.
* docs/CHANGES: Updated.
2015-08-12 Alexei Podtelezhnikov <apodtele@gmail.com>
[type1,cff,cid] Streamline font matrix application.

13
docs/CHANGES
View File

@ -33,6 +33,19 @@ CHANGES BETWEEN 2.6 and 2.6.1
don't need any change to the source code.
- Simple access to named instances in GX variation fonts is now
available (in addition to the previous method via FreeType's MM
interface). In the FT_Face structure, bits 16-30 of the
`face_index' field hold the current named instance index for the
given face index, and bits 16-30 of `style_flags' contain the
number of instances for the given face index. `FT_Open_Face'
and friends also understand the extended bits of the face index
parameter.
You need to enable TT_CONFIG_OPTION_GX_VAR_SUPPORT for this new
feature. Otherwise, bits 16-30 of the two fields are zero (or
are ignored).
III. MISCELLANEOUS

159
include/freetype/freetype.h
View File

@ -876,17 +876,36 @@ FT_BEGIN_HEADER
/* font formats can have multiple faces in */
/* a font file. */
/* */
/* face_index :: The index of the face in the font file. It */
/* is set to~0 if there is only one face in */
/* face_index :: This field holds two different values. */
/* Bits 0-15 are the index of the face in the */
/* font file (starting with value~0). They */
/* are set to~0 if there is only one face in */
/* the font file. */
/* */
/* Bits 16-30 are relevant to GX variation */
/* fonts only, holding the named instance */
/* index for the current face index (starting */
/* with value~1; value~0 indicates font access */
/* without GX variation data). For non-GX */
/* fonts, bits 16-30 are ignored. If we have */
/* the third named instance of face~4, say, */
/* `face_index' is set to 0x00030004. */
/* */
/* Bit 31 is always zero (this is, */
/* `face_index' is always a positive value). */
/* */
/* face_flags :: A set of bit flags that give important */
/* information about the face; see */
/* @FT_FACE_FLAG_XXX for the details. */
/* */
/* style_flags :: A set of bit flags indicating the style of */
/* the face; see @FT_STYLE_FLAG_XXX for the */
/* details. */
/* style_flags :: The lower 16~bits contain a set of bit */
/* flags indicating the style of the face; see */
/* @FT_STYLE_FLAG_XXX for the details. Bits */
/* 16-30 hold the number of named instances */
/* available for the current face if we have a */
/* GX variation (sub)font. Bit 31 is always */
/* zero (this is, `style_flags' is always a */
/* positive value). */
/* */
/* num_glyphs :: The number of glyphs in the face. If the */
/* face is scalable and has sbits (see */
@ -1392,7 +1411,7 @@ FT_BEGIN_HEADER
/* FT_STYLE_FLAG_XXX */
/* */
/* <Description> */
/* A list of bit-flags used to indicate the style of a given face. */
/* A list of bit flags used to indicate the style of a given face. */
/* These are used in the `style_flags' field of @FT_FaceRec. */
/* */
/* <Values> */
@ -1824,7 +1843,7 @@ FT_BEGIN_HEADER
/* FT_OPEN_XXX */
/* */
/* <Description> */
/* A list of bit-field constants used within the `flags' field of the */
/* A list of bit field constants used within the `flags' field of the */
/* @FT_Open_Args structure. */
/* */
/* <Values> */
@ -1971,13 +1990,12 @@ FT_BEGIN_HEADER
/* <Input> */
/* pathname :: A path to the font file. */
/* */
/* face_index :: The index of the face within the font. The first */
/* face has index~0. */
/* face_index :: See @FT_Open_Face for a detailed description of this */
/* parameter. */
/* */
/* <Output> */
/* aface :: A handle to a new face object. If `face_index' is */
/* greater than or equal to zero, it must be non-NULL. */
/* See @FT_Open_Face for more details. */
/* */
/* <Return> */
/* FreeType error code. 0~means success. */
@ -2010,13 +2028,12 @@ FT_BEGIN_HEADER
/* */
/* file_size :: The size of the memory chunk used by the font data. */
/* */
/* face_index :: The index of the face within the font. The first */
/* face has index~0. */
/* face_index :: See @FT_Open_Face for a detailed description of this */
/* parameter. */
/* */
/* <Output> */
/* aface :: A handle to a new face object. If `face_index' is */
/* greater than or equal to zero, it must be non-NULL. */
/* See @FT_Open_Face for more details. */
/* */
/* <Return> */
/* FreeType error code. 0~means success. */
@ -2048,13 +2065,43 @@ FT_BEGIN_HEADER
/* args :: A pointer to an `FT_Open_Args' structure that must */
/* be filled by the caller. */
/* */
/* face_index :: The index of the face within the font. The first */
/* face has index~0. */
/* face_index :: This field holds two different values. Bits 0-15 */
/* are the index of the face in the font file (starting */
/* with value~0). Set it to~0 if there is only one */
/* face in the font file. */
/* */
/* Bits 16-30 are relevant to GX variation fonts only, */
/* specifying the named instance index for the current */
/* face index (starting with value~1; value~0 makes */
/* FreeType ignore named instances). For non-GX fonts, */
/* bits 16-30 are ignored. Assuming that you want to */
/* access the third named instance in face~4, */
/* `face_index' should be set to 0x00030004. If you */
/* want to access face~4 without GX variation handling, */
/* simply set `face_index' to value~4. */
/* */
/* FT_Open_Face and its siblings can be used to quickly */
/* check whether the font format of a given font */
/* resource is supported by FreeType. In general, if */
/* the `face_index' argument is negative, the */
/* function's return value is~0 if the font format is */
/* recognized, or non-zero otherwise. The function */
/* allocates a more or less empty face handle in */
/* `*aface' (if `aface' isn't NULL); the only two */
/* useful fields in this special case are */
/* `face->num_faces' and `face->style_flags'. For any */
/* negative value of `face_index', `face->num_faces' */
/* gives the number of faces within the font file. For */
/* the negative value `-(N+1)' (with `N' a 16-bit */
/* value), bits 16-30 in `face->style_flags' give the */
/* number of named instances in face `N' if we have a */
/* GX variation font (or zero otherwise). After */
/* examination, the returned @FT_Face structure should */
/* be deallocated with a call to @FT_Done_Face. */
/* */
/* <Output> */
/* aface :: A handle to a new face object. If `face_index' is */
/* greater than or equal to zero, it must be non-NULL. */
/* See note below. */
/* */
/* <Return> */
/* FreeType error code. 0~means success. */
@ -2064,16 +2111,6 @@ FT_BEGIN_HEADER
/* slot for the face object that can be accessed directly through */
/* `face->glyph'. */
/* */
/* FT_Open_Face can be used to quickly check whether the font */
/* format of a given font resource is supported by FreeType. If the */
/* `face_index' field is negative, the function's return value is~0 */
/* if the font format is recognized, or non-zero otherwise; */
/* the function returns a more or less empty face handle in `*aface' */
/* (if `aface' isn't NULL). The only useful field in this special */
/* case is `face->num_faces' that gives the number of faces within */
/* the font file. After examination, the returned @FT_Face structure */
/* should be deallocated with a call to @FT_Done_Face. */
/* */
/* Each new face object created with this function also owns a */
/* default @FT_Size object, accessible as `face->size'. */
/* */
@ -2084,6 +2121,74 @@ FT_BEGIN_HEADER
/* See the discussion of reference counters in the description of */
/* @FT_Reference_Face. */
/* */
/* To loop over all faces, use code similar to the following snippet */
/* (omitting the error handling). */
/* */
/* { */
/* ... */
/* FT_Face face; */
/* FT_Long i, num_faces; */
/* */
/* */
/* error = FT_Open_Face( library, args, -1, &face ); */
/* if ( error ) { ... } */
/* */
/* num_faces = face->num_faces; */
/* FT_Done_Face( face ); */
/* */
/* for ( i = 0; i < num_faces; i++ ) */
/* { */
/* ... */
/* error = FT_Open_Face( library, args, i, &face ); */
/* ... */
/* FT_Done_Face( face ); */
/* ... */
/* } */
/* } */
/* */
/* To loop over all valid values for `face_index', use something */
/* similar to the following snippet, again without error handling. */
/* The code accesses all faces immediately (thus only a single call */
/* of `FT_Open_Face' within the do-loop), with and without named */
/* instances. */
/* */
/* { */
/* ... */
/* FT_Face face; */
/* */
/* FT_Long num_faces = 0; */
/* FT_Long num_instances = 0; */
/* */
/* FT_Long face_idx = 0; */
/* FT_Long instance_idx = 0; */
/* */
/* */
/* do */
/* { */
/* FT_Long id = ( instance_idx << 16 ) + face_idx; */
/* */
/* */
/* error = FT_Open_Face( library, args, id, &face ); */
/* if ( error ) { ... } */
/* */
/* num_faces = face->num_faces; */
/* num_instances = face->style_flags >> 16; */
/* */
/* ... */
/* */
/* FT_Done_Face( face ); */
/* */
/* if ( instance_idx < num_instances ) */
/* instance_idx++; */
/* else */
/* { */
/* face_idx++; */
/* instance_idx = 0; */
/* } */
/* */
/* } while ( face_idx < num_faces ) */
/* } */
/* */
FT_EXPORT( FT_Error )
FT_Open_Face( FT_Library library,
const FT_Open_Args* args,
@ -2521,7 +2626,7 @@ FT_BEGIN_HEADER
* FT_LOAD_XXX
*
* @description:
* A list of bit-field constants used with @FT_Load_Glyph to indicate
* A list of bit field constants used with @FT_Load_Glyph to indicate
* what kind of operations to perform during glyph loading.
*
* @values:

8
include/freetype/internal/sfnt.h
View File

@ -44,7 +44,9 @@ FT_BEGIN_HEADER
/* face :: A handle to the target face object. */
/* */
/* face_index :: The index of the TrueType font, if we are opening a */
/* collection. */
/* collection, in bits 0-15. The numbered instance */
/* index~+~1 of a GX (sub)font, if applicable, in bits */
/* 16-30. */
/* */
/* num_params :: The number of additional parameters. */
/* */
@ -87,7 +89,9 @@ FT_BEGIN_HEADER
/* face :: A handle to the target face object. */
/* */
/* face_index :: The index of the TrueType font, if we are opening a */
/* collection. */
/* collection, in bits 0-15. The numbered instance */
/* index~+~1 of a GX (sub)font, if applicable, in bits */
/* 16-30. */
/* */
/* num_params :: The number of additional parameters. */
/* */

10
src/base/ftobjs.c
View File

@ -1375,13 +1375,13 @@
}
#ifdef FT_MACINTOSH
/* At this point, face_index has served its purpose; */
/* At this point, the face index has served its purpose; */
/* whoever calls this function has already used it to */
/* locate the correct font data. We should not propagate */
/* this index to FT_Open_Face() (unless it is negative). */
if ( face_index > 0 )
face_index = 0;
face_index &= 0x7FFF0000L; /* retain GX data */
#endif
error = FT_Open_Face( library, &args, face_index, aface );
@ -1495,6 +1495,10 @@
FT_UNUSED( params );
/* ignore GX stuff */
if ( face_index > 0 )
face_index &= 0xFFFFL;
pos = FT_STREAM_POS();
error = ft_lookup_PS_in_sfnt_stream( stream,
@ -1737,7 +1741,7 @@
/* 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. */
/* pass it on to the truetype driver, and return it. */
/* */
static FT_Error
Mac_Read_sfnt_Resource( FT_Library library,

3
src/bdf/bdfdrivr.c
View File

@ -379,7 +379,8 @@ THE SOFTWARE.
* an invalid argument error when the font could be
* opened by the specified driver.
*/
if ( face_index > 0 ) {
if ( face_index > 0 && ( face_index & 0xFFFF ) > 0 )
{
FT_ERROR(( "BDF_Face_Init: invalid face index\n" ));
BDF_Face_Done( bdfface );
return FT_THROW( Invalid_Argument );

4
src/cff/cffload.c
View File

@ -1495,9 +1495,9 @@
if ( pure_cff )
{
/* well, we don't really forget the `disabled' fonts... */
subfont_index = (FT_UInt)face_index;
subfont_index = (FT_UInt)( face_index & 0xFFFF );
if ( subfont_index >= font->name_index.count )
if ( face_index > 0 && subfont_index >= font->name_index.count )
{
FT_ERROR(( "cff_font_load:"
" invalid subfont index for pure CFF font (%d)\n",

12
src/cff/cffobjs.c
View File

@ -583,10 +583,15 @@
if ( error )
goto Exit;
/* if we are performing a simple font format check, exit immediately */
/* (this is here for pure CFF) */
if ( face_index < 0 )
return FT_Err_Ok;
cff->pshinter = pshinter;
cff->psnames = psnames;
cffface->face_index = face_index;
cffface->face_index = face_index & 0xFFFF;
/* Complement the root flags with some interesting information. */
/* Note that this is only necessary for pure CFF and CEF fonts; */
@ -765,8 +770,9 @@
(FT_Short)( dict->underline_thickness >> 16 );
/* retrieve font family & style name */
cffface->family_name = cff_index_get_name( cff,
(FT_UInt)face_index );
cffface->family_name = cff_index_get_name(
cff,
(FT_UInt)( face_index & 0xFFFF ) );
if ( cffface->family_name )
{
char* full = cff_index_get_sid_string( cff,

4
src/cid/cidobjs.c
View File

@ -334,7 +334,7 @@
/* check the face index */
/* XXX: handle CID fonts with more than a single face */
if ( face_index != 0 )
if ( ( face_index & 0xFFFF ) != 0 )
{
FT_ERROR(( "cid_face_init: invalid face index\n" ));
error = FT_THROW( Invalid_Argument );
@ -354,7 +354,7 @@
cidface->num_glyphs = (FT_Long)cid->cid_count;
cidface->num_charmaps = 0;
cidface->face_index = face_index;
cidface->face_index = face_index & 0xFFFF;
cidface->face_flags |= FT_FACE_FLAG_SCALABLE | /* scalable outlines */
FT_FACE_FLAG_HORIZONTAL | /* horizontal data */

9
src/pcf/pcfdrivr.c
View File

@ -345,13 +345,14 @@ THE SOFTWARE.
#endif
}
/* PCF could not have multiple face in single font file.
* XXX: non-zero face_index is already invalid argument, but
* Type1, Type42 driver has a convention to return
/* PCF cannot have multiple faces in a single font file.
* XXX: A non-zero face_index is already an invalid argument, but
* Type1, Type42 drivers have a convention to return
* an invalid argument error when the font could be
* opened by the specified driver.
*/
if ( face_index > 0 ) {
if ( face_index > 0 && ( face_index & 0xFFFF ) > 0 )
{
FT_ERROR(( "PCF_Face_Init: invalid face index\n" ));
PCF_Face_Done( pcfface );
return FT_THROW( Invalid_Argument );

6
src/pfr/pfrobjs.c
View File

@ -109,7 +109,7 @@
if ( face_index < 0 )
goto Exit;
if ( face_index >= pfrface->num_faces )
if ( ( face_index & 0xFFFF ) >= pfrface->num_faces )
{
FT_ERROR(( "pfr_face_init: invalid face index\n" ));
error = FT_THROW( Invalid_Argument );
@ -118,7 +118,7 @@
/* load the face */
error = pfr_log_font_load(
&face->log_font, stream, (FT_UInt)face_index,
&face->log_font, stream, (FT_UInt)( face_index & 0xFFFF ),
face->header.log_dir_offset,
FT_BOOL( face->header.phy_font_max_size_high != 0 ) );
if ( error )
@ -136,7 +136,7 @@
PFR_PhyFont phy_font = &face->phy_font;
pfrface->face_index = face_index;
pfrface->face_index = face_index & 0xFFFF;
pfrface->num_glyphs = (FT_Long)phy_font->num_chars + 1;
pfrface->face_flags |= FT_FACE_FLAG_SCALABLE;

60
src/sfnt/sfobjs.c
View File

@ -821,13 +821,14 @@
FT_LOCAL_DEF( FT_Error )
sfnt_init_face( FT_Stream stream,
TT_Face face,
FT_Int face_index,
FT_Int face_instance_index,
FT_Int num_params,
FT_Parameter* params )
{
FT_Error error;
FT_Library library = face->root.driver->root.library;
SFNT_Service sfnt;
FT_Int face_index;
/* for now, parameters are unused */
@ -860,22 +861,65 @@
/* Stream may have changed in sfnt_open_font. */
stream = face->root.stream;
FT_TRACE2(( "sfnt_init_face: %08p, %ld\n", face, face_index ));
FT_TRACE2(( "sfnt_init_face: %08p, %ld\n", face, face_instance_index ));
if ( face_index < 0 )
face_index = 0;
face_index = FT_ABS( face_instance_index ) & 0xFFFF;
if ( face_index >= face->ttc_header.count )
{
if ( face_instance_index >= 0 )
return FT_THROW( Invalid_Argument );
else
face_index = 0;
}
if ( FT_STREAM_SEEK( face->ttc_header.offsets[face_index] ) )
return error;
/* check that we have a valid TrueType file */
/* check whether we have a valid TrueType file */
error = sfnt->load_font_dir( face, stream );
if ( error )
return error;
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
{
FT_ULong fvar_len;
FT_UShort num_instances;
FT_Int instance_index;
instance_index = FT_ABS( face_instance_index ) >> 16;
/* test whether current face is a GX font with named instances */
if ( face->goto_table( face, TTAG_fvar, stream, &fvar_len ) ||
fvar_len < 20 ||
FT_STREAM_SKIP( 12 ) ||
FT_READ_USHORT( num_instances ) )
num_instances = 0;
/* we support at most 2^15 - 1 instances */
if ( num_instances >= ( 1U << 15 ) - 1 )
{
if ( face_instance_index >= 0 )
return FT_THROW( Invalid_Argument );
else
num_instances = 0;
}
/* instance indices in `face_instance_index' start with index 1, */
/* thus `>' and not `>=' */
if ( instance_index > num_instances )
{
if ( face_instance_index >= 0 )
return FT_THROW( Invalid_Argument );
else
num_instances = 0;
}
face->root.style_flags = (FT_Long)num_instances << 16;
}
#endif
face->root.num_faces = face->ttc_header.count;
face->root.face_index = face_index;
@ -928,7 +972,7 @@
FT_LOCAL_DEF( FT_Error )
sfnt_load_face( FT_Stream stream,
TT_Face face,
FT_Int face_index,
FT_Int face_instance_index,
FT_Int num_params,
FT_Parameter* params )
{
@ -944,7 +988,7 @@
SFNT_Service sfnt = (SFNT_Service)face->sfnt;
FT_UNUSED( face_index );
FT_UNUSED( face_instance_index );
/* Check parameters */
@ -1266,7 +1310,7 @@
flags |= FT_STYLE_FLAG_ITALIC;
}
root->style_flags = flags;
root->style_flags |= flags;
/*********************************************************************/
/* */

4
src/sfnt/sfobjs.h
View File

@ -31,14 +31,14 @@ FT_BEGIN_HEADER
FT_LOCAL( FT_Error )
sfnt_init_face( FT_Stream stream,
TT_Face face,
FT_Int face_index,
FT_Int face_instance_index,
FT_Int num_params,
FT_Parameter* params );
FT_LOCAL( FT_Error )
sfnt_load_face( FT_Stream stream,
TT_Face face,
FT_Int face_index,
FT_Int face_instance_index,
FT_Int num_params,
FT_Parameter* params );

55
src/truetype/ttobjs.c
View File

@ -490,7 +490,10 @@
/* <Input> */
/* stream :: The source font stream. */
/* */
/* face_index :: The index of the font face in the resource. */
/* face_index :: The index of the TrueType font, if we are opening a */
/* collection, in bits 0-15. The numbered instance */
/* index~+~1 of a GX (sub)font, if applicable, in bits */
/* 16-30. */
/* */
/* num_params :: Number of additional generic parameters. Ignored. */
/* */
@ -599,7 +602,7 @@
ttface->face_flags &= ~FT_FACE_FLAG_SCALABLE;
}
#else
#else /* !FT_CONFIG_OPTION_INCREMENTAL */
if ( !error )
error = tt_face_load_loca( face, stream );
@ -623,10 +626,56 @@
ttface->face_flags &= ~FT_FACE_FLAG_SCALABLE;
}
#endif
#endif /* !FT_CONFIG_OPTION_INCREMENTAL */
}
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
{
FT_Int instance_index = face_index >> 16;
if ( FT_HAS_MULTIPLE_MASTERS( ttface ) &&
instance_index > 0 )
{
error = TT_Get_MM_Var( face, NULL );
if ( error )
goto Exit;
if ( face->blend->mmvar->namedstyle )
{
FT_Memory memory = ttface->memory;
FT_Var_Named_Style* named_style;
FT_String* style_name;
/* in `face_index', the instance index starts with value 1 */
named_style = face->blend->mmvar->namedstyle + instance_index - 1;
error = sfnt->get_name( face,
(FT_UShort)named_style->strid,
&style_name );
if ( error )
goto Exit;
/* set style name; if already set, replace it */
if ( face->root.style_name )
FT_FREE( face->root.style_name );
face->root.style_name = style_name;
/* finally, select the named instance */
error = TT_Set_Var_Design( face,
face->blend->mmvar->num_axis,
named_style->coords );
if ( error )
goto Exit;
}
}
}
#endif /* TT_CONFIG_OPTION_GX_VAR_SUPPORT */
#if defined( TT_CONFIG_OPTION_UNPATENTED_HINTING ) && \
!defined( TT_CONFIG_OPTION_BYTECODE_INTERPRETER )

2
src/type1/t1objs.c
View File

@ -345,7 +345,7 @@
goto Exit;
/* check the face index */
if ( face_index > 0 )
if ( ( face_index & 0xFFFF ) > 0 )
{
FT_ERROR(( "T1_Face_Init: invalid face index\n" ));
error = FT_THROW( Invalid_Argument );

2
src/type42/t42objs.c
View File

@ -208,7 +208,7 @@
goto Exit;
/* check the face index */
if ( face_index > 0 )
if ( ( face_index & 0xFFFF ) > 0 )
{
FT_ERROR(( "T42_Face_Init: invalid face index\n" ));
error = FT_THROW( Invalid_Argument );

24
src/winfonts/winfnt.c
View File

@ -269,16 +269,19 @@
static FT_Error
fnt_face_get_dll_font( FNT_Face face,
FT_Int face_index )
FT_Int face_instance_index )
{
FT_Error error;
FT_Stream stream = FT_FACE( face )->stream;
FT_Memory memory = FT_FACE( face )->memory;
WinMZ_HeaderRec mz_header;
FT_Long face_index;
face->font = NULL;
face_index = FT_ABS( face_instance_index ) & 0xFFFF;
/* does it begin with an MZ header? */
if ( FT_STREAM_SEEK( 0 ) ||
FT_STREAM_READ_FIELDS( winmz_header_fields, &mz_header ) )
@ -359,13 +362,14 @@
face->root.num_faces = font_count;
if ( face_instance_index < 0 )
goto Exit;
if ( face_index >= font_count )
{
error = FT_THROW( Invalid_Argument );
goto Exit;
}
else if ( face_index < 0 )
goto Exit;
if ( FT_NEW( face->font ) )
goto Exit;
@ -689,13 +693,14 @@
static FT_Error
FNT_Face_Init( FT_Stream stream,
FT_Face fntface, /* FNT_Face */
FT_Int face_index,
FT_Int face_instance_index,
FT_Int num_params,
FT_Parameter* params )
{
FNT_Face face = (FNT_Face)fntface;
FT_Error error;
FT_Memory memory = FT_FACE_MEMORY( face );
FT_Int face_index;
FT_UNUSED( num_params );
FT_UNUSED( params );
@ -703,9 +708,11 @@
FT_TRACE2(( "Windows FNT driver\n" ));
face_index = FT_ABS( face_instance_index ) & 0xFFFF;
/* try to load font from a DLL */
error = fnt_face_get_dll_font( face, face_index );
if ( !error && face_index < 0 )
error = fnt_face_get_dll_font( face, face_instance_index );
if ( !error && face_instance_index < 0 )
goto Exit;
if ( FT_ERR_EQ( error, Unknown_File_Format ) )
@ -726,10 +733,11 @@
if ( !error )
{
if ( face_instance_index < 0 )
goto Exit;
if ( face_index > 0 )
error = FT_THROW( Invalid_Argument );
else if ( face_index < 0 )
goto Exit;
}
}