ref: 9c45ac39661af69119e95d25e4d4dc09c6467d43
parent: 5614090725658439e7b4260c50a031c7355bab2a
author: Werner Lemberg <[email protected]>
date: Wed Oct 26 12:00:00 EDT 2016
Add `FT_Get_{MM,Var}_Blend_Coordinates' functions.
* include/freetype/ftmm.h: Declare.
* include/freetype/internal/services/svmm.h (FT_Get_MM_Blend_Func):
New typedef.
(MultiMasters): New MM service function `get_mm_blend'.
(FT_DEFINE_SERVICE_MULTIMASTERSREC): Updated.
Update all callers.
* src/base/ftmm.c (FT_Get_MM_Blend_Coordinates,
FT_Get_Var_Blend_Coordinates): Implement.
* src/truetype/ttdriver.c: Updated.
* src/truetype/ttgxvar.c (TT_Get_MM_Blend): New function to handle
`get_mm_blend' service.
* src/truetype/ttgxvar.h: Updated.
* src/type1/t1driver.c: Updated.
* src/type1/t1load.c (T1_Get_MM_Blend): New function to handle
`get_mm_blend' service.
* src/type1/t1load.h: Updated.
* docs/CHANGES: Document.
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,34 @@
2016-10-26 Werner Lemberg <[email protected]>
+ Add `FT_Get_{MM,Var}_Blend_Coordinates' functions.+
+ * include/freetype/ftmm.h: Declare.
+
+ * include/freetype/internal/services/svmm.h (FT_Get_MM_Blend_Func):
+ New typedef.
+ (MultiMasters): New MM service function `get_mm_blend'.
+ (FT_DEFINE_SERVICE_MULTIMASTERSREC): Updated.
+ Update all callers.
+
+ * src/base/ftmm.c (FT_Get_MM_Blend_Coordinates,
+ FT_Get_Var_Blend_Coordinates): Implement.
+
+ * src/truetype/ttdriver.c: Updated.
+
+ * src/truetype/ttgxvar.c (TT_Get_MM_Blend): New function to handle
+ `get_mm_blend' service.
+ * src/truetype/ttgxvar.h: Updated.
+
+ * src/type1/t1driver.c: Updated.
+
+ * src/type1/t1load.c (T1_Get_MM_Blend): New function to handle
+ `get_mm_blend' service.
+ * src/type1/t1load.h: Updated.
+
+ * docs/CHANGES: Document.
+
+2016-10-26 Werner Lemberg <[email protected]>
+
* src/type1/t1load.c (parse_subrs): Fix limit check.
Reported as
--- a/docs/CHANGES
+++ b/docs/CHANGES
@@ -32,6 +32,11 @@
For example, you no longer get `Fixed' but rather `Sony Fixed'
or `Misc Fixed Wide'.
+ - A new function `FT_Get_Var_Blend_Coordinates' (with its alias
+ name `FT_Get_MM_Blend_Coordinates') to retrieve the normalized
+ blend coordinates of the currently selected variation instance
+ has been added to the Multiple Masters interface.
+
======================================================================
--- a/include/freetype/ftmm.h
+++ b/include/freetype/ftmm.h
@@ -353,7 +353,8 @@
/* use default values for the remaining axes. */
/* */
/* coords :: The design coordinates array (each element must be */
- /* between 0 and 1.0). */
+ /* between 0 and 1.0 for MM fonts, and between -1.0 and */
+ /* 1.0 for GX var fonts). */
/* */
/* <Return> */
/* FreeType error code. 0~means success. */
@@ -367,6 +368,35 @@
/*************************************************************************/
/* */
/* <Function> */
+ /* FT_Get_MM_Blend_Coordinates */
+ /* */
+ /* <Description> */
+ /* For Multiple Masters and GX var fonts, get the normalized blend */
+ /* coordinates of the currently selected interpolated font. */
+ /* */
+ /* <InOut> */
+ /* face :: A handle to the source face. */
+ /* */
+ /* <Input> */
+ /* num_coords :: The number of design coordinates to retrieve. If it */
+ /* is larger than the number of axes, set the excess */
+ /* values to 0.5 for MM fonts, and to 0 for GX var */
+ /* fonts. */
+ /* */
+ /* coords :: The design coordinates array. */
+ /* */
+ /* <Return> */
+ /* FreeType error code. 0~means success. */
+ /* */
+ FT_EXPORT( FT_Error )
+ FT_Get_MM_Blend_Coordinates( FT_Face face,
+ FT_UInt num_coords,
+ FT_Fixed* coords );
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
/* FT_Set_Var_Blend_Coordinates */
/* */
/* <Description> */
@@ -374,6 +404,20 @@
/* */
FT_EXPORT( FT_Error )
FT_Set_Var_Blend_Coordinates( FT_Face face,
+ FT_UInt num_coords,
+ FT_Fixed* coords );
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* FT_Get_Var_Blend_Coordinates */
+ /* */
+ /* <Description> */
+ /* This is another name of @FT_Get_MM_Blend_Coordinates. */
+ /* */
+ FT_EXPORT( FT_Error )
+ FT_Get_Var_Blend_Coordinates( FT_Face face,
FT_UInt num_coords,
FT_Fixed* coords );
--- a/include/freetype/internal/services/svmm.h
+++ b/include/freetype/internal/services/svmm.h
@@ -58,12 +58,18 @@
FT_UInt num_coords,
FT_Long* coords );
+ typedef FT_Error
+ (*FT_Get_MM_Blend_Func)( FT_Face face,
+ FT_UInt num_coords,
+ FT_Long* coords );
+
FT_DEFINE_SERVICE( MultiMasters )
{FT_Get_MM_Func get_mm;
FT_Set_MM_Design_Func set_mm_design;
FT_Set_MM_Blend_Func set_mm_blend;
+ FT_Get_MM_Blend_Func get_mm_blend;
FT_Get_MM_Var_Func get_mm_var;
FT_Set_Var_Design_Func set_var_design;
};
@@ -71,33 +77,41 @@
#ifndef FT_CONFIG_OPTION_PIC
-#define FT_DEFINE_SERVICE_MULTIMASTERSREC( class_, \
- get_mm_, \
- set_mm_design_, \
- set_mm_blend_, \
- get_mm_var_, \
- set_var_design_ ) \
- static const FT_Service_MultiMastersRec class_ = \
- { \- get_mm_, set_mm_design_, set_mm_blend_, get_mm_var_, set_var_design_ \
+#define FT_DEFINE_SERVICE_MULTIMASTERSREC( class_, \
+ get_mm_, \
+ set_mm_design_, \
+ set_mm_blend_, \
+ get_mm_blend_, \
+ get_mm_var_, \
+ set_var_design_ ) \
+ static const FT_Service_MultiMastersRec class_ = \
+ { \+ get_mm_, \
+ set_mm_design_, \
+ set_mm_blend_, \
+ get_mm_blend_, \
+ get_mm_var_, \
+ set_var_design_ \
};
#else /* FT_CONFIG_OPTION_PIC */
-#define FT_DEFINE_SERVICE_MULTIMASTERSREC( class_, \
- get_mm_, \
- set_mm_design_, \
- set_mm_blend_, \
- get_mm_var_, \
- set_var_design_ ) \
- void \
- FT_Init_Class_ ## class_( FT_Service_MultiMastersRec* clazz ) \
- { \- clazz->get_mm = get_mm_; \
- clazz->set_mm_design = set_mm_design_; \
- clazz->set_mm_blend = set_mm_blend_; \
- clazz->get_mm_var = get_mm_var_; \
- clazz->set_var_design = set_var_design_; \
+#define FT_DEFINE_SERVICE_MULTIMASTERSREC( class_, \
+ get_mm_, \
+ set_mm_design_, \
+ set_mm_blend_, \
+ get_mm_blend_, \
+ get_mm_var_, \
+ set_var_design_ ) \
+ void \
+ FT_Init_Class_ ## class_( FT_Service_MultiMastersRec* clazz ) \
+ { \+ clazz->get_mm = get_mm_; \
+ clazz->set_mm_design = set_mm_design_; \
+ clazz->set_mm_blend = set_mm_blend_; \
+ clazz->get_mm_blend = get_mm_blend_; \
+ clazz->get_mm_var = get_mm_var_; \
+ clazz->set_var_design = set_var_design_; \
}
#endif /* FT_CONFIG_OPTION_PIC */
--- a/src/base/ftmm.c
+++ b/src/base/ftmm.c
@@ -231,4 +231,63 @@
}
+ /* documentation is in ftmm.h */
+
+ FT_EXPORT_DEF( FT_Error )
+ FT_Get_MM_Blend_Coordinates( FT_Face face,
+ FT_UInt num_coords,
+ FT_Fixed* coords )
+ {+ FT_Error error;
+ FT_Service_MultiMasters service;
+
+
+ /* check of `face' delayed to `ft_face_get_mm_service' */
+
+ if ( !coords )
+ return FT_THROW( Invalid_Argument );
+
+ error = ft_face_get_mm_service( face, &service );
+ if ( !error )
+ {+ error = FT_ERR( Invalid_Argument );
+ if ( service->get_mm_blend )
+ error = service->get_mm_blend( face, num_coords, coords );
+ }
+
+ return error;
+ }
+
+
+ /* documentation is in ftmm.h */
+
+ /* This is exactly the same as the previous function. It exists for */
+ /* orthogonality. */
+
+ FT_EXPORT_DEF( FT_Error )
+ FT_Get_Var_Blend_Coordinates( FT_Face face,
+ FT_UInt num_coords,
+ FT_Fixed* coords )
+ {+ FT_Error error;
+ FT_Service_MultiMasters service;
+
+
+ /* check of `face' delayed to `ft_face_get_mm_service' */
+
+ if ( !coords )
+ return FT_THROW( Invalid_Argument );
+
+ error = ft_face_get_mm_service( face, &service );
+ if ( !error )
+ {+ error = FT_ERR( Invalid_Argument );
+ if ( service->get_mm_blend )
+ error = service->get_mm_blend( face, num_coords, coords );
+ }
+
+ return error;
+ }
+
+
/* END */
--- a/src/truetype/ttdriver.c
+++ b/src/truetype/ttdriver.c
@@ -470,6 +470,7 @@
(FT_Get_MM_Func) NULL, /* get_mm */
(FT_Set_MM_Design_Func) NULL, /* set_mm_design */
(FT_Set_MM_Blend_Func) TT_Set_MM_Blend, /* set_mm_blend */
+ (FT_Get_MM_Blend_Func) TT_Get_MM_Blend, /* get_mm_blend */
(FT_Get_MM_Var_Func) TT_Get_MM_Var, /* get_mm_var */
(FT_Set_Var_Design_Func)TT_Set_Var_Design /* set_var_design */
)
--- a/src/truetype/ttgxvar.c
+++ b/src/truetype/ttgxvar.c
@@ -1186,6 +1186,64 @@
/*************************************************************************/
/* */
/* <Function> */
+ /* TT_Get_MM_Blend */
+ /* */
+ /* <Description> */
+ /* Get the blend (normalized) coordinates for this instance of the */
+ /* font. */
+ /* */
+ /* <InOut> */
+ /* face :: The font. */
+ /* Initialize the blend structure with `gvar' data. */
+ /* */
+ /* <Input> */
+ /* num_coords :: The number of available coordinates. If it is */
+ /* larger than the number of axes, set the excess */
+ /* values to 0. */
+ /* */
+ /* coords :: An array of `num_coords', each between [-1,1]. */
+ /* */
+ /* <Return> */
+ /* FreeType error code. 0 means success. */
+ /* */
+ FT_LOCAL_DEF( FT_Error )
+ TT_Get_MM_Blend( TT_Face face,
+ FT_UInt num_coords,
+ FT_Fixed* coords )
+ {+ FT_Error error = FT_Err_Ok;
+ GX_Blend blend;
+ FT_UInt i, nc;
+
+
+ if ( face->blend == NULL )
+ {+ if ( ( error = TT_Get_MM_Var( face, NULL ) ) != 0 )
+ return error;
+ }
+
+ blend = face->blend;
+
+ nc = num_coords;
+ if ( num_coords > blend->num_axis )
+ {+ FT_TRACE2(( "TT_Get_MM_Blend: only using first %d of %d coordinates\n",
+ blend->num_axis, num_coords ));
+ nc = blend->num_axis;
+ }
+
+ for ( i = 0; i < nc; ++i )
+ coords[i] = blend->normalizedcoords[i];
+ for ( ; i < num_coords; i++ )
+ coords[i] = 0;
+
+ return FT_Err_Ok;
+ }
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
/* TT_Set_Var_Design */
/* */
/* <Description> */
--- a/src/truetype/ttgxvar.h
+++ b/src/truetype/ttgxvar.h
@@ -149,6 +149,11 @@
FT_Fixed* coords );
FT_LOCAL( FT_Error )
+ TT_Get_MM_Blend( TT_Face face,
+ FT_UInt num_coords,
+ FT_Fixed* coords );
+
+ FT_LOCAL( FT_Error )
TT_Set_Var_Design( TT_Face face,
FT_UInt num_coords,
FT_Fixed* coords );
--- a/src/type1/t1driver.c
+++ b/src/type1/t1driver.c
@@ -122,6 +122,7 @@
(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 */
};
--- a/src/type1/t1load.c
+++ b/src/type1/t1load.c
@@ -413,6 +413,41 @@
FT_LOCAL_DEF( FT_Error )
+ T1_Get_MM_Blend( T1_Face face,
+ FT_UInt num_coords,
+ FT_Fixed* coords )
+ {+ PS_Blend blend = face->blend;
+
+ FT_Fixed axiscoords[4];
+ FT_UInt i, nc;
+
+
+ if ( !blend )
+ return FT_THROW( Invalid_Argument );
+
+ mm_weights_unmap( blend->weight_vector,
+ axiscoords,
+ blend->num_axis );
+
+ nc = num_coords;
+ if ( num_coords > blend->num_axis )
+ {+ FT_TRACE2(( "T1_Get_MM_Blend: only using first %d of %d coordinates\n",
+ blend->num_axis, num_coords ));
+ nc = blend->num_axis;
+ }
+
+ for ( i = 0; i < nc; ++i )
+ coords[i] = axiscoords[i];
+ for ( ; i < num_coords; i++ )
+ coords[i] = 0x8000;
+
+ return FT_Err_Ok;
+ }
+
+
+ FT_LOCAL_DEF( FT_Error )
T1_Set_MM_Design( T1_Face face,
FT_UInt num_coords,
FT_Long* coords )
--- a/src/type1/t1load.h
+++ b/src/type1/t1load.h
@@ -80,6 +80,11 @@
FT_Fixed* coords );
FT_LOCAL( FT_Error )
+ T1_Get_MM_Blend( T1_Face face,
+ FT_UInt num_coords,
+ FT_Fixed* coords );
+
+ FT_LOCAL( FT_Error )
T1_Set_MM_Design( T1_Face face,
FT_UInt num_coords,
FT_Long* coords );