New Variation Font function FT_Get_Default_Named_Instance.
* include/freetype/ftmm.h, src/base/ftmm.c (FT_Get_Default_Named_Instance): New function. * include/freetype/internal/services/svmm.h (FT_Get_Default_Named_Instance_Func): New typedef. (FT_Service_MultiMasters): New field `get_default_named_instance`. (FT_DEFINE_SERVICE_MULTIMASTERSREC): Updated. * include/freetype/internal/tttypes.h (TT_Face): New field `var_default_named_instance`. * src/sfnt/sfobjc.s (sfnt_init_face): Initialize `var_default_named_instance`. * src/cff/cffdrivr.c (cff_get_default_named_instance): New function. (cff_service_multi_masters): Updated. * src/truetype/ttgxvar.c (TT_Get_MM_Var): Initialize `var_default_named_instance`. (TT_Get_Default_Named_Instance): New function. * src/truetype/ttgxvar.h: Updated. * src/truetype/ttdriver.c (tt_service_gx_multi_masters): Updated. * src/type1/t1driver.c (t1_service_multi_masters): Updated. * docs/CHANGES: Updated.
This commit is contained in:
Werner Lemberg
parent
b5e57b041b
commit
fb982e78a7
12
docs/CHANGES
12
docs/CHANGES
@ -1,3 +1,13 @@
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CHANGES BETWEEN 2.13.0 and 2.13.1 (2023-XXX-XX)
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I. MISCELLANEOUS
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- New function `FT_Get_Default_Named_Instance` to get the index of
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the default named instance of an OpenType Variation Font.
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======================================================================
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CHANGES BETWEEN 2.12.1 and 2.13.0 (2023-Feb-09)
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I. IMPORTANT CHANGES
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@ -12,7 +22,7 @@ CHANGES BETWEEN 2.12.1 and 2.13.0 (2023-Feb-09)
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https://learn.microsoft.com/en-us/typography/opentype/spec/colr
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III. MISCELLANEOUS
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II. MISCELLANEOUS
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- For OpenType Variable Fonts, `avar` table format 2.0 is now
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supported. The code was contributed by Behdad Esfahbod.
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@ -753,6 +753,45 @@ FT_BEGIN_HEADER
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FT_Set_Named_Instance( FT_Face face,
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FT_UInt instance_index );
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/**************************************************************************
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*
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* @function:
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* FT_Get_Default_Named_Instance
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*
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* @description:
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* Retrieve the index of the default named instance, to be used with
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* @FT_Set_Named_Instance.
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*
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* The default instance of a variation font is that instance for which
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* the nth axis coordinate is equal to `axis[n].def` (as specified in the
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* @FT_MM_Var structure), with~n covering all axes.
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*
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* FreeType synthesizes a named instance for the default instance if the
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* font does not contain such an entry.
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*
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* @input:
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* face ::
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* A handle to the source face.
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*
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* @output:
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* instance_index ::
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* The index of the default named instance.
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*
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* @return:
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* FreeType error code. 0~means success.
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*
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* @note:
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* For Adobe MM fonts (which don't have named instances) this function
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* always returns zero for `instance_index`.
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*
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* @since:
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* 2.13.1
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*/
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FT_EXPORT( FT_Error )
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FT_Get_Default_Named_Instance( FT_Face face,
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FT_UInt *instance_index );
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/* */
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@ -73,6 +73,10 @@ FT_BEGIN_HEADER
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(*FT_Set_Instance_Func)( FT_Face face,
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FT_UInt instance_index );
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typedef FT_Error
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(*FT_Get_Default_Named_Instance_Func)( FT_Face face,
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FT_UInt *instance_index );
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typedef FT_Error
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(*FT_Get_MM_Blend_Func)( FT_Face face,
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FT_UInt num_coords,
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@ -135,6 +139,7 @@ FT_BEGIN_HEADER
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FT_Set_Var_Design_Func set_var_design;
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FT_Get_Var_Design_Func get_var_design;
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FT_Set_Instance_Func set_instance;
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FT_Get_Default_Named_Instance_Func get_default_named_instance;
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FT_Set_MM_WeightVector_Func set_mm_weightvector;
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FT_Get_MM_WeightVector_Func get_mm_weightvector;
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@ -149,43 +154,45 @@ FT_BEGIN_HEADER
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};
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#define FT_DEFINE_SERVICE_MULTIMASTERSREC( class_, \
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get_mm_, \
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set_mm_design_, \
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set_mm_blend_, \
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get_mm_blend_, \
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get_mm_var_, \
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set_var_design_, \
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get_var_design_, \
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set_instance_, \
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set_weightvector_, \
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get_weightvector_, \
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load_delta_set_idx_map_, \
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load_item_var_store_, \
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get_item_delta_, \
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done_item_var_store_, \
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done_delta_set_idx_map_, \
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get_var_blend_, \
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done_blend_ ) \
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static const FT_Service_MultiMastersRec class_ = \
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{ \
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get_mm_, \
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set_mm_design_, \
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set_mm_blend_, \
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get_mm_blend_, \
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get_mm_var_, \
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set_var_design_, \
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get_var_design_, \
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set_instance_, \
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set_weightvector_, \
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get_weightvector_, \
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load_delta_set_idx_map_, \
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load_item_var_store_, \
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get_item_delta_, \
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done_item_var_store_, \
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done_delta_set_idx_map_, \
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get_var_blend_, \
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done_blend_ \
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#define FT_DEFINE_SERVICE_MULTIMASTERSREC( class_, \
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get_mm_, \
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set_mm_design_, \
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set_mm_blend_, \
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get_mm_blend_, \
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get_mm_var_, \
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set_var_design_, \
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get_var_design_, \
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set_instance_, \
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get_default_named_instance_, \
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set_weightvector_, \
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get_weightvector_, \
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load_delta_set_idx_map_, \
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load_item_var_store_, \
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get_item_delta_, \
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done_item_var_store_, \
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done_delta_set_idx_map_, \
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get_var_blend_, \
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done_blend_ ) \
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static const FT_Service_MultiMastersRec class_ = \
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{ \
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get_mm_, \
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set_mm_design_, \
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set_mm_blend_, \
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get_mm_blend_, \
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get_mm_var_, \
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set_var_design_, \
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get_var_design_, \
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set_instance_, \
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get_default_named_instance_, \
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set_weightvector_, \
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get_weightvector_, \
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load_delta_set_idx_map_, \
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load_item_var_store_, \
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get_item_delta_, \
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done_item_var_store_, \
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done_delta_set_idx_map_, \
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get_var_blend_, \
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done_blend_ \
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};
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/* */
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@ -1315,6 +1315,9 @@ FT_BEGIN_HEADER
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* var_postscript_prefix_len ::
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* The length of the `var_postscript_prefix` string.
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*
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* var_default_named_instance ::
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* The index of the default named instance.
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*
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* horz_metrics_size ::
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* The size of the 'hmtx' table.
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*
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@ -1552,6 +1555,7 @@ FT_BEGIN_HEADER
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const char* var_postscript_prefix; /* since 2.7.2 */
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FT_UInt var_postscript_prefix_len; /* since 2.7.2 */
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FT_UInt var_default_named_instance; /* since 2.13.1 */
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#endif
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/* since version 2.2 */
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@ -565,4 +565,32 @@
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}
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/* documentation is in ftmm.h */
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FT_EXPORT_DEF( FT_Error )
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FT_Get_Default_Named_Instance( FT_Face face,
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FT_UInt *instance_index )
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{
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FT_Error error;
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FT_Service_MultiMasters service_mm = NULL;
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/* check of `face' delayed to `ft_face_get_mm_service' */
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error = ft_face_get_mm_service( face, &service_mm );
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if ( !error )
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{
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/* no error if `get_default_named_instance` is not available */
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if ( service_mm->get_default_named_instance )
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error = service_mm->get_default_named_instance( face,
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instance_index );
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else
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error = FT_Err_Ok;
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}
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return error;
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}
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/* END */
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@ -942,6 +942,17 @@
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}
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static FT_Error
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cff_get_default_named_instance( CFF_Face face,
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FT_UInt *instance_index )
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{
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FT_Service_MultiMasters mm = (FT_Service_MultiMasters)face->mm;
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return mm->get_default_named_instance( FT_FACE( face ), instance_index );
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}
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static FT_Error
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cff_load_item_variation_store( CFF_Face face,
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FT_ULong offset,
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@ -1009,36 +1020,39 @@
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FT_DEFINE_SERVICE_MULTIMASTERSREC(
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cff_service_multi_masters,
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(FT_Get_MM_Func) NULL, /* get_mm */
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(FT_Set_MM_Design_Func) NULL, /* set_mm_design */
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(FT_Set_MM_Blend_Func) cff_set_mm_blend, /* set_mm_blend */
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(FT_Get_MM_Blend_Func) cff_get_mm_blend, /* get_mm_blend */
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(FT_Get_MM_Var_Func) cff_get_mm_var, /* get_mm_var */
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(FT_Set_Var_Design_Func)cff_set_var_design, /* set_var_design */
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(FT_Get_Var_Design_Func)cff_get_var_design, /* get_var_design */
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(FT_Set_Instance_Func) cff_set_instance, /* set_instance */
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(FT_Get_MM_Func) NULL, /* get_mm */
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(FT_Set_MM_Design_Func) NULL, /* set_mm_design */
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(FT_Set_MM_Blend_Func) cff_set_mm_blend, /* set_mm_blend */
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(FT_Get_MM_Blend_Func) cff_get_mm_blend, /* get_mm_blend */
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(FT_Get_MM_Var_Func) cff_get_mm_var, /* get_mm_var */
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(FT_Set_Var_Design_Func)cff_set_var_design, /* set_var_design */
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(FT_Get_Var_Design_Func)cff_get_var_design, /* get_var_design */
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(FT_Set_Instance_Func) cff_set_instance, /* set_instance */
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(FT_Get_Default_Named_Instance_Func)
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cff_get_default_named_instance,
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/* get_default_named_instance */
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(FT_Set_MM_WeightVector_Func)
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cff_set_mm_weightvector,
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/* set_mm_weightvector */
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/* set_mm_weightvector */
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(FT_Get_MM_WeightVector_Func)
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cff_get_mm_weightvector,
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/* get_mm_weightvector */
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/* get_mm_weightvector */
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(FT_Var_Load_Delta_Set_Idx_Map_Func)
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cff_load_delta_set_index_mapping,
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/* load_delta_set_idx_map */
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/* load_delta_set_idx_map */
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(FT_Var_Load_Item_Var_Store_Func)
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cff_load_item_variation_store,
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/* load_item_variation_store */
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/* load_item_variation_store */
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(FT_Var_Get_Item_Delta_Func)
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cff_get_item_delta, /* get_item_delta */
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cff_get_item_delta, /* get_item_delta */
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(FT_Var_Done_Item_Var_Store_Func)
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cff_done_item_variation_store,
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/* done_item_variation_store */
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/* done_item_variation_store */
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(FT_Var_Done_Delta_Set_Idx_Map_Func)
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cff_done_delta_set_index_map,
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/* done_delta_set_index_map */
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(FT_Get_Var_Blend_Func) cff_get_var_blend, /* get_var_blend */
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(FT_Done_Blend_Func) cff_done_blend /* done_blend */
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/* done_delta_set_index_map */
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(FT_Get_Var_Blend_Func) cff_get_var_blend, /* get_var_blend */
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(FT_Done_Blend_Func) cff_done_blend /* done_blend */
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)
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@ -698,6 +698,9 @@
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instance_offset += instance_size;
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}
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/* named instance indices start with value 1 */
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face->var_default_named_instance = i + 1;
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if ( i == num_instances )
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{
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/* no default instance in named instance table; */
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@ -517,34 +517,37 @@
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FT_DEFINE_SERVICE_MULTIMASTERSREC(
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tt_service_gx_multi_masters,
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(FT_Get_MM_Func) NULL, /* get_mm */
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(FT_Set_MM_Design_Func) NULL, /* set_mm_design */
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(FT_Set_MM_Blend_Func) TT_Set_MM_Blend, /* set_mm_blend */
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(FT_Get_MM_Blend_Func) TT_Get_MM_Blend, /* get_mm_blend */
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(FT_Get_MM_Var_Func) TT_Get_MM_Var, /* get_mm_var */
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(FT_Set_Var_Design_Func)TT_Set_Var_Design, /* set_var_design */
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(FT_Get_Var_Design_Func)TT_Get_Var_Design, /* get_var_design */
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(FT_Set_Instance_Func) TT_Set_Named_Instance, /* set_instance */
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(FT_Get_MM_Func) NULL, /* get_mm */
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(FT_Set_MM_Design_Func) NULL, /* set_mm_design */
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(FT_Set_MM_Blend_Func) TT_Set_MM_Blend, /* set_mm_blend */
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(FT_Get_MM_Blend_Func) TT_Get_MM_Blend, /* get_mm_blend */
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(FT_Get_MM_Var_Func) TT_Get_MM_Var, /* get_mm_var */
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(FT_Set_Var_Design_Func)TT_Set_Var_Design, /* set_var_design */
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(FT_Get_Var_Design_Func)TT_Get_Var_Design, /* get_var_design */
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(FT_Set_Instance_Func) TT_Set_Named_Instance, /* set_instance */
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(FT_Get_Default_Named_Instance_Func)
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TT_Get_Default_Named_Instance,
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/* get_default_named_instance */
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(FT_Set_MM_WeightVector_Func)
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NULL, /* set_mm_weightvector */
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NULL, /* set_mm_weightvector */
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(FT_Get_MM_WeightVector_Func)
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NULL, /* get_mm_weightvector */
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NULL, /* get_mm_weightvector */
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(FT_Var_Load_Delta_Set_Idx_Map_Func)
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tt_var_load_delta_set_index_mapping,
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/* load_delta_set_idx_map */
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/* load_delta_set_idx_map */
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(FT_Var_Load_Item_Var_Store_Func)
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tt_var_load_item_variation_store,
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/* load_item_variation_store */
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/* load_item_variation_store */
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(FT_Var_Get_Item_Delta_Func)
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tt_var_get_item_delta, /* get_item_delta */
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tt_var_get_item_delta, /* get_item_delta */
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(FT_Var_Done_Item_Var_Store_Func)
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tt_var_done_item_variation_store,
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/* done_item_variation_store */
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/* done_item_variation_store */
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(FT_Var_Done_Delta_Set_Idx_Map_Func)
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tt_var_done_delta_set_index_map,
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/* done_delta_set_index_map */
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(FT_Get_Var_Blend_Func) tt_get_var_blend, /* get_var_blend */
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(FT_Done_Blend_Func) tt_done_blend /* done_blend */
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/* done_delta_set_index_map */
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(FT_Get_Var_Blend_Func) tt_get_var_blend, /* get_var_blend */
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(FT_Done_Blend_Func) tt_done_blend /* done_blend */
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)
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FT_DEFINE_SERVICE_METRICSVARIATIONSREC(
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@ -2630,8 +2630,10 @@
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FT_UInt strid = ~0U;
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/* the default instance is missing in array the */
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/* of named instances; try to synthesize an entry */
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/* The default instance is missing in array the */
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/* of named instances; try to synthesize an entry. */
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/* If this fails, `default_named_instance` remains */
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/* at value zero, which doesn't do any harm. */
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found = sfnt->get_name_id( face,
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TT_NAME_ID_TYPOGRAPHIC_SUBFAMILY,
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&dummy1,
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@ -2659,6 +2661,9 @@
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FT_TRACE5(( "TT_Get_MM_Var:"
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" Adding default instance to named instances\n" ));
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/* named instance indices start with value 1 */
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face->var_default_named_instance = num_instances;
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ns = &mmvar->namedstyle[fvar_head.instanceCount];
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ns->strid = strid;
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@ -3386,6 +3391,45 @@
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}
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/**************************************************************************
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*
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* @Function:
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* TT_Get_Default_Named_Instance
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*
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* @Description:
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* Get the default named instance.
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*
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* @Input:
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* face ::
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* A handle to the source face.
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*
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* @Output:
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* instance_index ::
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* The default named instance index.
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*
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* @Return:
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* FreeType error code. 0~means success.
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*/
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FT_LOCAL_DEF( FT_Error )
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TT_Get_Default_Named_Instance( TT_Face face,
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FT_UInt *instance_index )
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{
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FT_Error error = FT_Err_Ok;
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if ( !face->blend )
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{
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if ( FT_SET_ERROR( TT_Get_MM_Var( face, NULL ) ) )
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goto Exit;
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}
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*instance_index = face->var_default_named_instance;
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Exit:
|
||||
return error;
|
||||
}
|
||||
|
||||
|
||||
/*************************************************************************/
|
||||
/*************************************************************************/
|
||||
/***** *****/
|
||||
|
||||
@ -374,6 +374,10 @@ FT_BEGIN_HEADER
|
||||
TT_Set_Named_Instance( TT_Face face,
|
||||
FT_UInt instance_index );
|
||||
|
||||
FT_LOCAL( FT_Error )
|
||||
TT_Get_Default_Named_Instance( TT_Face face,
|
||||
FT_UInt *instance_index );
|
||||
|
||||
FT_LOCAL( FT_Error )
|
||||
tt_face_vary_cvt( TT_Face face,
|
||||
FT_Stream stream );
|
||||
|
||||
@ -121,30 +121,32 @@
|
||||
#ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT
|
||||
static const FT_Service_MultiMastersRec t1_service_multi_masters =
|
||||
{
|
||||
(FT_Get_MM_Func) T1_Get_Multi_Master, /* get_mm */
|
||||
(FT_Set_MM_Design_Func) T1_Set_MM_Design, /* set_mm_design */
|
||||
(FT_Set_MM_Blend_Func) T1_Set_MM_Blend, /* set_mm_blend */
|
||||
(FT_Get_MM_Blend_Func) T1_Get_MM_Blend, /* get_mm_blend */
|
||||
(FT_Get_MM_Var_Func) T1_Get_MM_Var, /* get_mm_var */
|
||||
(FT_Set_Var_Design_Func)T1_Set_Var_Design, /* set_var_design */
|
||||
(FT_Get_Var_Design_Func)T1_Get_Var_Design, /* get_var_design */
|
||||
(FT_Set_Instance_Func) T1_Reset_MM_Blend, /* set_instance */
|
||||
(FT_Get_MM_Func) T1_Get_Multi_Master, /* get_mm */
|
||||
(FT_Set_MM_Design_Func) T1_Set_MM_Design, /* set_mm_design */
|
||||
(FT_Set_MM_Blend_Func) T1_Set_MM_Blend, /* set_mm_blend */
|
||||
(FT_Get_MM_Blend_Func) T1_Get_MM_Blend, /* get_mm_blend */
|
||||
(FT_Get_MM_Var_Func) T1_Get_MM_Var, /* get_mm_var */
|
||||
(FT_Set_Var_Design_Func)T1_Set_Var_Design, /* set_var_design */
|
||||
(FT_Get_Var_Design_Func)T1_Get_Var_Design, /* get_var_design */
|
||||
(FT_Set_Instance_Func) T1_Reset_MM_Blend, /* set_instance */
|
||||
(FT_Get_Default_Named_Instance_Func)
|
||||
NULL, /* get_default_named_instance */
|
||||
(FT_Set_MM_WeightVector_Func)
|
||||
T1_Set_MM_WeightVector, /* set_mm_weightvector */
|
||||
T1_Set_MM_WeightVector, /* set_mm_weightvector */
|
||||
(FT_Get_MM_WeightVector_Func)
|
||||
T1_Get_MM_WeightVector, /* get_mm_weightvector */
|
||||
T1_Get_MM_WeightVector, /* get_mm_weightvector */
|
||||
(FT_Var_Load_Delta_Set_Idx_Map_Func)
|
||||
NULL, /* load_delta_set_idx_map */
|
||||
NULL, /* load_delta_set_idx_map */
|
||||
(FT_Var_Load_Item_Var_Store_Func)
|
||||
NULL, /* load_item_variation_store */
|
||||
NULL, /* load_item_variation_store */
|
||||
(FT_Var_Get_Item_Delta_Func)
|
||||
NULL, /* get_item_delta */
|
||||
NULL, /* get_item_delta */
|
||||
(FT_Var_Done_Item_Var_Store_Func)
|
||||
NULL, /* done_item_variation_store */
|
||||
NULL, /* done_item_variation_store */
|
||||
(FT_Var_Done_Delta_Set_Idx_Map_Func)
|
||||
NULL, /* done_delta_set_index_map */
|
||||
(FT_Get_Var_Blend_Func) NULL, /* get_var_blend */
|
||||
(FT_Done_Blend_Func) T1_Done_Blend /* done_blend */
|
||||
NULL, /* done_delta_set_index_map */
|
||||
(FT_Get_Var_Blend_Func) NULL, /* get_var_blend */
|
||||
(FT_Done_Blend_Func) T1_Done_Blend /* done_blend */
|
||||
};
|
||||
#endif
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user