Commit 44bb303510725735ca2650bdd524af25abab0c71
2004-04-25T20:15:11
* src/pcf/pcfdrivr.c: Revert change from 2004-04-17. * src/pcf/pcfutil.c: Use FT_LOCAL_DEF. * src/pcf/pcfutil.h: Include FT_CONFIG_CONFIG_H. Use FT_BEGIN_HEADER and FT_END_HEADER. Use FT_LOCAL. 2004-04-24 George Williams <gww@silcom.com> Add support for Apple's distortable font technology (in GX fonts). * devel/ftoption.h, include/freetype/config/ftoption.h (TT_CONFIG_OPTION_GX_VAR_SUPPORT): New macro. * include/freetype/ftmm.h (FT_Var_Axis, FT_Var_Named_Style, FT_MM_Var): New structures. (FT_Get_MM_Var, FT_Set_Var_Design_Coordinates, FT_Set_Var_Blend_Coordinates): New function declarations. * include/freetype/internal/services/svmm.h (FT_Get_MM_Var_Func, FT_Set_Var_Design_Func): New typedefs. Update MultiMasters service. * include/freetype/internal/tttypes.h [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include FT_MULTIPLE_MASTERS_H. (GX_Blend) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: New typedef. (TT_Face) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: New members `doblend' and `blend'. * include/freetype/tttags.h (TTAG_avar, TTAG_cvar, TTAG_gvar): New macros. * include/freetype/internal/fttrace.h: Add `ttgxvar'. * src/base/ftmm.c (FT_Get_MM_Var, FT_Set_Var_Design_Coordinates, FT_Set_Var_Blend_Coordinates): New functions. * src/sfnt/sfobjs.c (sfnt_load_face) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Set FT_FACE_FLAG_MULTIPLE_MASTERS flag for GX var fonts. * src/truetype/ttgxvar.c, src/truetype/ttgxvar.h: New files. * src/truetype/truetype.c [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include ttgxvar.c. * src/truetype/ttdriver.c [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include FT_MULTIPLE_MASTERS_H, FT_SERVICE_MULTIPLE_MASTERS_H, and ttgxvar.h. (tt_service_gx_multi_masters) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: New service. (tt_services) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Updated. * src/truetype/ttgload.c [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include ttgxvar.h. (TT_Process_Simple_Glyph, load_truetype_glyph) [TT_CONFIG_OPTION_GX_VAR_SUPPORT] :Support GX var fonts. * src/truetype/ttobjs.c [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include ttgxvar.h. (tt_done_face) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Call tt_done_blend. * src/truetype/ttpload.c [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include ttgxvar.h. (tt_face_load_cvt) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Call tt_face_vary_cvt. * src/truetype/rules.mk (TT_DRV_SRC): Add ttgxvar.c. * src/type1/t1driver.c (t1_service_multi_masters): Add T1_Get_MM_Var and T1_Set_Var_Design. * src/type1/t1load.c (FT_INT_TO_FIXED, FT_FIXED_TO_INT): New macros. (T1_Get_MM_Var, T1_Set_Var_Design): New functions. * src/type1/t1load.h (T1_Get_MM_Var, T1_Set_Var_Design): New function declarations.
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diff --git a/ChangeLog b/ChangeLog
index 2d7dd5d..6687651 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,82 @@
+2004-04-24 Werner Lemberg <wl@gnu.org>
+
+ * src/pcf/pcfdrivr.c: Revert change from 2004-04-17.
+ * src/pcf/pcfutil.c: Use FT_LOCAL_DEF.
+ * src/pcf/pcfutil.h: Include FT_CONFIG_CONFIG_H.
+ Use FT_BEGIN_HEADER and FT_END_HEADER.
+ Use FT_LOCAL.
+
+2004-04-24 George Williams <gww@silcom.com>
+
+ Add support for Apple's distortable font technology (in GX fonts).
+
+ * devel/ftoption.h, include/freetype/config/ftoption.h
+ (TT_CONFIG_OPTION_GX_VAR_SUPPORT): New macro.
+
+ * include/freetype/ftmm.h (FT_Var_Axis, FT_Var_Named_Style,
+ FT_MM_Var): New structures.
+ (FT_Get_MM_Var, FT_Set_Var_Design_Coordinates,
+ FT_Set_Var_Blend_Coordinates): New function declarations.
+
+ * include/freetype/internal/services/svmm.h (FT_Get_MM_Var_Func,
+ FT_Set_Var_Design_Func): New typedefs.
+ Update MultiMasters service.
+
+ * include/freetype/internal/tttypes.h
+ [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include FT_MULTIPLE_MASTERS_H.
+ (GX_Blend) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: New typedef.
+ (TT_Face) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: New members `doblend'
+ and `blend'.
+
+ * include/freetype/tttags.h (TTAG_avar, TTAG_cvar, TTAG_gvar): New
+ macros.
+
+ * include/freetype/internal/fttrace.h: Add `ttgxvar'.
+
+ * src/base/ftmm.c (FT_Get_MM_Var, FT_Set_Var_Design_Coordinates,
+ FT_Set_Var_Blend_Coordinates): New functions.
+
+ * src/sfnt/sfobjs.c (sfnt_load_face)
+ [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Set FT_FACE_FLAG_MULTIPLE_MASTERS
+ flag for GX var fonts.
+
+ * src/truetype/ttgxvar.c, src/truetype/ttgxvar.h: New files.
+
+ * src/truetype/truetype.c [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include
+ ttgxvar.c.
+
+ * src/truetype/ttdriver.c [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include
+ FT_MULTIPLE_MASTERS_H, FT_SERVICE_MULTIPLE_MASTERS_H, and ttgxvar.h.
+ (tt_service_gx_multi_masters) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]:
+ New service.
+ (tt_services) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Updated.
+
+ * src/truetype/ttgload.c [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include
+ ttgxvar.h.
+ (TT_Process_Simple_Glyph, load_truetype_glyph)
+ [TT_CONFIG_OPTION_GX_VAR_SUPPORT] :Support GX var fonts.
+
+ * src/truetype/ttobjs.c [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include
+ ttgxvar.h.
+ (tt_done_face) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Call
+ tt_done_blend.
+
+ * src/truetype/ttpload.c [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include
+ ttgxvar.h.
+ (tt_face_load_cvt) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Call
+ tt_face_vary_cvt.
+
+ * src/truetype/rules.mk (TT_DRV_SRC): Add ttgxvar.c.
+
+ * src/type1/t1driver.c (t1_service_multi_masters): Add T1_Get_MM_Var
+ and T1_Set_Var_Design.
+
+ * src/type1/t1load.c (FT_INT_TO_FIXED, FT_FIXED_TO_INT): New macros.
+ (T1_Get_MM_Var, T1_Set_Var_Design): New functions.
+
+ * src/type1/t1load.h (T1_Get_MM_Var, T1_Set_Var_Design): New
+ function declarations.
+
2004-04-23 Werner Lemberg <wl@gnu.org>
* include/freetype/ftcache.h (FT_Get_CharMap_Index): Rename
@@ -69,7 +148,7 @@
* src/bdf/bdfdrivr.c (BDF_Face_Init): Use `ft_strlen'.
* src/pcf/pcfutil.c, src/pcf/pcfutil.h: Decorate functions with
- `static.'.
+ `static'.
Remove unused function `RepadBitmap'.
* src/pcf/pcfdrivr.c: Don't include pcfutil.h.
diff --git a/devel/ftoption.h b/devel/ftoption.h
index d8f699f..eaad2b6 100644
--- a/devel/ftoption.h
+++ b/devel/ftoption.h
@@ -484,6 +484,16 @@ FT_BEGIN_HEADER
/*************************************************************************/
+ /* */
+ /* Define TT_CONFIG_OPTION_GX_VAR_SUPPORT if you want to include */
+ /* support for Apple's distortable font technology (fvar, gvar, cvar, */
+ /* and avar tables). This has many similarities to Type 1 Multiple */
+ /* Masters support. */
+ /* */
+#define TT_CONFIG_OPTION_GX_VAR_SUPPORT
+
+
+ /*************************************************************************/
/*************************************************************************/
/**** ****/
/**** T Y P E 1 D R I V E R C O N F I G U R A T I O N ****/
diff --git a/include/freetype/config/ftoption.h b/include/freetype/config/ftoption.h
index a527ec1..028c6ea 100644
--- a/include/freetype/config/ftoption.h
+++ b/include/freetype/config/ftoption.h
@@ -484,6 +484,16 @@ FT_BEGIN_HEADER
/*************************************************************************/
+ /* */
+ /* Define TT_CONFIG_OPTION_GX_VAR_SUPPORT if you want to include */
+ /* support for Apple's distortable font technology (fvar, gvar, cvar, */
+ /* and avar tables). This has many similarities to Type 1 Multiple */
+ /* Masters support. */
+ /* */
+#define TT_CONFIG_OPTION_GX_VAR_SUPPORT
+
+
+ /*************************************************************************/
/*************************************************************************/
/**** ****/
/**** T Y P E 1 D R I V E R C O N F I G U R A T I O N ****/
diff --git a/include/freetype/ftmm.h b/include/freetype/ftmm.h
index 7f565be..9aa6d82 100644
--- a/include/freetype/ftmm.h
+++ b/include/freetype/ftmm.h
@@ -4,7 +4,7 @@
/* */
/* FreeType Multiple Master font interface (specification). */
/* */
-/* Copyright 1996-2001 by */
+/* Copyright 1996-2001, 2003, 2004 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -43,6 +43,12 @@ FT_BEGIN_HEADER
/* Master fonts, i.e. the selection of specific design instances by */
/* setting design axis coordinates. */
/* */
+ /* George Williams has extended this interface to make it work with */
+ /* both Type 1 Multiple Masters fonts, and GX distortable (var) */
+ /* fonts. Some of these routines only work with MM fonts, others */
+ /* will work with both types. They are similar enough that a */
+ /* consistent interface makes sense. */
+ /* */
/*************************************************************************/
@@ -55,6 +61,8 @@ FT_BEGIN_HEADER
/* A simple structure used to model a given axis in design space for */
/* Multiple Masters fonts. */
/* */
+ /* This structure can't be used for GX var fonts. */
+ /* */
/* <Fields> */
/* name :: The axis's name. */
/* */
@@ -80,6 +88,8 @@ FT_BEGIN_HEADER
/* A structure used to model the axes and space of a Multiple Masters */
/* font. */
/* */
+ /* This structure can't be used for GX var fonts. */
+ /* */
/* <Fields> */
/* num_axis :: Number of axes. Cannot exceed 4. */
/* */
@@ -98,8 +108,118 @@ FT_BEGIN_HEADER
} FT_Multi_Master;
+
+ /*************************************************************************/
+ /* */
+ /* <Struct> */
+ /* FT_Var_Axis */
+ /* */
+ /* <Description> */
+ /* A simple structure used to model a given axis in design space for */
+ /* Multiple Masters and GX var fonts. */
+ /* */
+ /* <Fields> */
+ /* name :: The axis's name. */
+ /* Not always meaningful for GX. */
+ /* */
+ /* minimum :: The axis's minimum design coordinate. */
+ /* */
+ /* def :: The axis's default design coordinate. */
+ /* Not meaningful for MM. */
+ /* */
+ /* maximum :: The axis's maximum design coordinate. */
+ /* */
+ /* tag :: The axis's tag (the GX equivalent to `name'). */
+ /* Not meaningful for MM. */
+ /* */
+ /* strid :: The entry in `name' table (another GX version of */
+ /* `name'). */
+ /* Not meaningful for MM. */
+ /* */
+ typedef struct FT_Var_Axis_
+ {
+ FT_String* name;
+
+ FT_Fixed minimum;
+ FT_Fixed def;
+ FT_Fixed maximum;
+
+ FT_ULong tag;
+ FT_UInt strid;
+
+ } FT_Var_Axis;
+
+
+ /*************************************************************************/
+ /* */
+ /* <Struct> */
+ /* FT_Var_Named_Style */
+ /* */
+ /* <Description> */
+ /* A simple structure used to model a named style in a GX var font. */
+ /* */
+ /* This structure can't be used for MM fonts. */
+ /* */
+ /* <Fields> */
+ /* coords :: The design coordinates for this style. */
+ /* This is an array with one entry for each axis. */
+ /* */
+ /* strid :: The entry in `name' table identifying this style. */
+ /* */
+ typedef struct FT_Var_Named_Style_
+ {
+ FT_Fixed* coords;
+ FT_UInt strid;
+
+ } FT_Var_Named_Style;
+
+
+ /*************************************************************************/
+ /* */
+ /* <Struct> */
+ /* FT_MM_Var */
+ /* */
+ /* <Description> */
+ /* A structure used to model the axes and space of a Multiple Masters */
+ /* or GX var distortable font. */
+ /* */
+ /* Some fields are specific to one format and not to the other. */
+ /* */
+ /* <Fields> */
+ /* num_axis :: The number of axes. The maximum value is 4 for */
+ /* MM; no limit in GX. */
+ /* */
+ /* num_designs :: The number of designs; should be normally */
+ /* 2^num_axis for MM fonts. Not meaningful for GX */
+ /* (where every glyph could have a different */
+ /* number of designs). */
+ /* */
+ /* num_namedstyles :: The number of named styles; only meaningful for */
+ /* GX which allows certain design coordinates to */
+ /* have a string ID (in the `name' table) */
+ /* associated with them. The font can tell the */
+ /* user that, for example, Weight=1.5 is `Bold'. */
+ /* */
+ /* axis :: A table of axis descriptors. */
+ /* GX fonts contain slightly more data than MM. */
+ /* */
+ /* namedstyles :: A table of named styles. */
+ /* Only meaningful with GX. */
+ /* */
+ typedef struct FT_MM_Var_
+ {
+ FT_UInt num_axis;
+ FT_UInt num_designs;
+ FT_UInt num_namedstyles;
+ FT_Var_Axis* axis;
+ FT_Var_Named_Style* namedstyle;
+
+ } FT_MM_Var;
+
+
/* */
+
/*************************************************************************/
/* */
/* <Function> */
@@ -108,6 +228,8 @@ FT_BEGIN_HEADER
/* <Description> */
/* Retrieves the Multiple Master descriptor of a given font. */
/* */
+ /* This function can't be used with GX fonts. */
+ /* */
/* <Input> */
/* face :: A handle to the source face. */
/* */
@@ -125,12 +247,38 @@ FT_BEGIN_HEADER
/*************************************************************************/
/* */
/* <Function> */
+ /* FT_Get_MM_Var */
+ /* */
+ /* <Description> */
+ /* Retrieves the Multiple Master/GX var descriptor of a given font. */
+ /* */
+ /* <Input> */
+ /* face :: A handle to the source face. */
+ /* */
+ /* <Output> */
+ /* amaster :: The Multiple Masters descriptor. */
+ /* Allocates a data structure, which the user must free */
+ /* (a single call to FT_FREE will do it). */
+ /* */
+ /* <Return> */
+ /* FreeType error code. 0 means success. */
+ /* */
+ FT_EXPORT( FT_Error )
+ FT_Get_MM_Var( FT_Face face,
+ FT_MM_Var* *amaster );
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
/* FT_Set_MM_Design_Coordinates */
/* */
/* <Description> */
/* For Multiple Masters fonts, choose an interpolated font design */
/* through design coordinates. */
/* */
+ /* This function can't be used with GX fonts. */
+ /* */
/* <InOut> */
/* face :: A handle to the source face. */
/* */
@@ -152,11 +300,38 @@ FT_BEGIN_HEADER
/*************************************************************************/
/* */
/* <Function> */
+ /* FT_Set_Var_Design_Coordinates */
+ /* */
+ /* <Description> */
+ /* For Multiple Master or GX Var fonts, choose an interpolated font */
+ /* design through design coordinates. */
+ /* */
+ /* <InOut> */
+ /* face :: A handle to the source face. */
+ /* */
+ /* <Input> */
+ /* num_coords :: The number of design coordinates (must be equal to */
+ /* the number of axes in the font). */
+ /* */
+ /* coords :: An array of design coordinates. */
+ /* */
+ /* <Return> */
+ /* FreeType error code. 0 means success. */
+ /* */
+ FT_EXPORT( FT_Error )
+ FT_Set_Var_Design_Coordinates( FT_Face face,
+ FT_UInt num_coords,
+ FT_Fixed* coords );
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
/* FT_Set_MM_Blend_Coordinates */
/* */
/* <Description> */
- /* For Multiple Masters fonts, choose an interpolated font design */
- /* through normalized blend coordinates. */
+ /* For Multiple Masters and GX var fonts, choose an interpolated font */
+ /* design through normalized blend coordinates. */
/* */
/* <InOut> */
/* face :: A handle to the source face. */
@@ -177,6 +352,20 @@ FT_BEGIN_HEADER
FT_Fixed* coords );
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* FT_Set_Var_Blend_Coordinates */
+ /* */
+ /* <Description> */
+ /* This is another name of @FT_Set_MM_Blend_Coordinates. */
+ /* */
+ FT_EXPORT( FT_Error )
+ FT_Set_Var_Blend_Coordinates( FT_Face face,
+ FT_UInt num_coords,
+ FT_Fixed* coords );
+
+
/* */
diff --git a/include/freetype/internal/fttrace.h b/include/freetype/internal/fttrace.h
index dffe9cf..a9a15a2 100644
--- a/include/freetype/internal/fttrace.h
+++ b/include/freetype/internal/fttrace.h
@@ -53,6 +53,7 @@ FT_TRACE_DEF( ttgload ) /* TT glyph loader (ttgload.c) */
FT_TRACE_DEF( ttinterp ) /* bytecode interpreter (ttinterp.c) */
FT_TRACE_DEF( ttobjs ) /* TT objects manager (ttobjs.c) */
FT_TRACE_DEF( ttpload ) /* TT data/program loader (ttpload.c) */
+FT_TRACE_DEF( ttgxvar ) /* TrueType GX var handler (ttgxvar.c) */
/* Type 1 driver components */
FT_TRACE_DEF( t1driver )
diff --git a/include/freetype/internal/services/svmm.h b/include/freetype/internal/services/svmm.h
index 926975c..8a99ec4 100644
--- a/include/freetype/internal/services/svmm.h
+++ b/include/freetype/internal/services/svmm.h
@@ -2,9 +2,9 @@
/* */
/* svmm.h */
/* */
-/* The FreeType Multiple Masters services (specification). */
+/* The FreeType Multiple Masters and GX var services (specification). */
/* */
-/* Copyright 2003 by */
+/* Copyright 2003, 2004 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -40,11 +40,20 @@ FT_BEGIN_HEADER
FT_Multi_Master* master );
typedef FT_Error
+ (*FT_Get_MM_Var_Func)( FT_Face face,
+ FT_MM_Var* *master );
+
+ typedef FT_Error
(*FT_Set_MM_Design_Func)( FT_Face face,
FT_UInt num_coords,
FT_Long* coords );
typedef FT_Error
+ (*FT_Set_Var_Design_Func)( FT_Face face,
+ FT_UInt num_coords,
+ FT_Fixed* coords );
+
+ typedef FT_Error
(*FT_Set_MM_Blend_Func)( FT_Face face,
FT_UInt num_coords,
FT_Long* coords );
@@ -52,9 +61,11 @@ FT_BEGIN_HEADER
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_Func get_mm;
+ FT_Set_MM_Design_Func set_mm_design;
+ FT_Set_MM_Blend_Func set_mm_blend;
+ FT_Get_MM_Var_Func get_mm_var;
+ FT_Set_Var_Design_Func set_var_design;
};
/* */
diff --git a/include/freetype/internal/tttypes.h b/include/freetype/internal/tttypes.h
index 02db8b4..6ef7021 100644
--- a/include/freetype/internal/tttypes.h
+++ b/include/freetype/internal/tttypes.h
@@ -5,7 +5,7 @@
/* Basic SFNT/TrueType type definitions and interface (specification */
/* only). */
/* */
-/* Copyright 1996-2001, 2002 by */
+/* Copyright 1996-2001, 2002, 2004 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -25,6 +25,10 @@
#include FT_TRUETYPE_TABLES_H
#include FT_INTERNAL_OBJECTS_H
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+#include FT_MULTIPLE_MASTERS_H
+#endif
+
FT_BEGIN_HEADER
@@ -823,6 +827,24 @@ FT_BEGIN_HEADER
/*************************************************************************/
/*** ***/
/*** ***/
+ /*** GX VARIATION TABLE SUPPORT ***/
+ /*** ***/
+ /*** ***/
+ /*************************************************************************/
+ /*************************************************************************/
+ /*************************************************************************/
+
+
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+ typedef struct GS_BlendRec_ *GX_Blend;
+#endif
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /*************************************************************************/
+ /*** ***/
+ /*** ***/
/*** ORIGINAL TT_FACE CLASS DEFINITION ***/
/*** ***/
/*** ***/
@@ -1152,8 +1174,18 @@ FT_BEGIN_HEADER
/* unpatented_hinting :: If true, use only unpatented methods in */
/* the bytecode interpreter. */
/* */
+ /* doblend :: A boolean which is set if the font should */
+ /* be blended (this is for GX var). */
+ /* */
+ /* blend :: Contains the data needed to control GX */
+ /* variation tables (rather like Multiple */
+ /* Master data). */
+ /* */
/* extra :: Reserved for third-party font drivers. */
/* */
+ /* postscript_name :: The PS name of the font. Used by the */
+ /* postscript name service. */
+ /* */
typedef struct TT_FaceRec_
{
FT_FaceRec root;
@@ -1261,6 +1293,11 @@ FT_BEGIN_HEADER
FT_Bool unpatented_hinting;
#endif
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+ FT_Bool doblend;
+ GX_Blend blend;
+#endif
+
/***********************************************************************/
/* */
/* Other tables or fields. This is used by derivative formats like */
diff --git a/include/freetype/tttables.h b/include/freetype/tttables.h
index 2224791..26e66b9 100644
--- a/include/freetype/tttables.h
+++ b/include/freetype/tttables.h
@@ -5,7 +5,7 @@
/* Basic SFNT/TrueType tables definitions and interface */
/* (specification only). */
/* */
-/* Copyright 1996-2001, 2002, 2003 by */
+/* Copyright 1996-2001, 2002, 2003, 2004 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -516,12 +516,11 @@ FT_BEGIN_HEADER
/* maxSizeOfInstructions :: The maximum number of TrueType opcodes */
/* used for glyph hinting. */
/* */
- /* maxComponentElements :: An obscure value related to composite */
- /* glyphs definitions. */
+ /* maxComponentElements :: The maximum number of simple (i.e., non- */
+ /* composite) glyphs in a composite glyph. */
/* */
- /* maxComponentDepth :: An obscure value related to composite */
- /* glyphs definitions. Probably the maximum */
- /* number of simple glyphs in a composite. */
+ /* maxComponentDepth :: The maximum nesting depth of composite */
+ /* glyphs. */
/* */
/* <Note> */
/* This structure is only used during font loading. */
diff --git a/include/freetype/tttags.h b/include/freetype/tttags.h
index ac64758..a6876d4 100644
--- a/include/freetype/tttags.h
+++ b/include/freetype/tttags.h
@@ -4,7 +4,7 @@
/* */
/* Tags for TrueType tables (specification only). */
/* */
-/* Copyright 1996-2001 by */
+/* Copyright 1996-2001, 2004 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -33,13 +33,15 @@
FT_BEGIN_HEADER
+#define TTAG_avar FT_MAKE_TAG( 'a', 'v', 'a', 'r' )
+#define TTAG_bdat FT_MAKE_TAG( 'b', 'd', 'a', 't' )
+#define TTAG_bhed FT_MAKE_TAG( 'b', 'h', 'e', 'd' )
+#define TTAG_bloc FT_MAKE_TAG( 'b', 'l', 'o', 'c' )
+#define TTAG_CFF FT_MAKE_TAG( 'C', 'F', 'F', ' ' )
#define TTAG_cmap FT_MAKE_TAG( 'c', 'm', 'a', 'p' )
+#define TTAG_cvar FT_MAKE_TAG( 'c', 'v', 'a', 'r' )
#define TTAG_cvt FT_MAKE_TAG( 'c', 'v', 't', ' ' )
-#define TTAG_CFF FT_MAKE_TAG( 'C', 'F', 'F', ' ' )
#define TTAG_DSIG FT_MAKE_TAG( 'D', 'S', 'I', 'G' )
-#define TTAG_bhed FT_MAKE_TAG( 'b', 'h', 'e', 'd' )
-#define TTAG_bdat FT_MAKE_TAG( 'b', 'd', 'a', 't' )
-#define TTAG_bloc FT_MAKE_TAG( 'b', 'l', 'o', 'c' )
#define TTAG_EBDT FT_MAKE_TAG( 'E', 'B', 'D', 'T' )
#define TTAG_EBLC FT_MAKE_TAG( 'E', 'B', 'L', 'C' )
#define TTAG_EBSC FT_MAKE_TAG( 'E', 'B', 'S', 'C' )
@@ -48,6 +50,7 @@ FT_BEGIN_HEADER
#define TTAG_gasp FT_MAKE_TAG( 'g', 'a', 's', 'p' )
#define TTAG_glyf FT_MAKE_TAG( 'g', 'l', 'y', 'f' )
#define TTAG_GSUB FT_MAKE_TAG( 'G', 'S', 'U', 'B' )
+#define TTAG_gvar FT_MAKE_TAG( 'g', 'v', 'a', 'r' )
#define TTAG_hdmx FT_MAKE_TAG( 'h', 'd', 'm', 'x' )
#define TTAG_head FT_MAKE_TAG( 'h', 'e', 'a', 'd' )
#define TTAG_hhea FT_MAKE_TAG( 'h', 'h', 'e', 'a' )
@@ -56,8 +59,8 @@ FT_BEGIN_HEADER
#define TTAG_loca FT_MAKE_TAG( 'l', 'o', 'c', 'a' )
#define TTAG_LTSH FT_MAKE_TAG( 'L', 'T', 'S', 'H' )
#define TTAG_maxp FT_MAKE_TAG( 'm', 'a', 'x', 'p' )
-#define TTAG_MMSD FT_MAKE_TAG( 'M', 'M', 'S', 'D' )
#define TTAG_MMFX FT_MAKE_TAG( 'M', 'M', 'F', 'X' )
+#define TTAG_MMSD FT_MAKE_TAG( 'M', 'M', 'S', 'D' )
#define TTAG_name FT_MAKE_TAG( 'n', 'a', 'm', 'e' )
#define TTAG_OS2 FT_MAKE_TAG( 'O', 'S', '/', '2' )
#define TTAG_OTTO FT_MAKE_TAG( 'O', 'T', 'T', 'O' )
diff --git a/src/base/ftmm.c b/src/base/ftmm.c
index 0bb2813..940f864 100644
--- a/src/base/ftmm.c
+++ b/src/base/ftmm.c
@@ -4,7 +4,7 @@
/* */
/* Multiple Master font support (body). */
/* */
-/* Copyright 1996-2001, 2003 by */
+/* Copyright 1996-2001, 2003, 2004 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -85,6 +85,28 @@
/* documentation is in ftmm.h */
FT_EXPORT_DEF( FT_Error )
+ FT_Get_MM_Var( FT_Face face,
+ FT_MM_Var* *amaster )
+ {
+ FT_Error error;
+ FT_Service_MultiMasters service;
+
+
+ error = ft_face_get_mm_service( face, &service );
+ if ( !error )
+ {
+ error = FT_Err_Invalid_Argument;
+ if ( service->get_mm_var )
+ error = service->get_mm_var( face, amaster );
+ }
+
+ return error;
+ }
+
+
+ /* documentation is in ftmm.h */
+
+ FT_EXPORT_DEF( FT_Error )
FT_Set_MM_Design_Coordinates( FT_Face face,
FT_UInt num_coords,
FT_Long* coords )
@@ -108,6 +130,29 @@
/* documentation is in ftmm.h */
FT_EXPORT_DEF( FT_Error )
+ FT_Set_Var_Design_Coordinates( FT_Face face,
+ FT_UInt num_coords,
+ FT_Fixed* coords )
+ {
+ FT_Error error;
+ FT_Service_MultiMasters service;
+
+
+ error = ft_face_get_mm_service( face, &service );
+ if ( !error )
+ {
+ error = FT_Err_Invalid_Argument;
+ if ( service->set_var_design )
+ error = service->set_var_design( face, num_coords, coords );
+ }
+
+ return error;
+ }
+
+
+ /* documentation is in ftmm.h */
+
+ FT_EXPORT_DEF( FT_Error )
FT_Set_MM_Blend_Coordinates( FT_Face face,
FT_UInt num_coords,
FT_Fixed* coords )
@@ -128,4 +173,30 @@
}
+ /* documentation is in ftmm.h */
+
+ /* This is exactly the same as the previous function. It exists for */
+ /* orthogonality. */
+
+ FT_EXPORT_DEF( FT_Error )
+ FT_Set_Var_Blend_Coordinates( FT_Face face,
+ FT_UInt num_coords,
+ FT_Fixed* coords )
+ {
+ FT_Error error;
+ FT_Service_MultiMasters service;
+
+
+ error = ft_face_get_mm_service( face, &service );
+ if ( !error )
+ {
+ error = FT_Err_Invalid_Argument;
+ if ( service->set_mm_blend )
+ error = service->set_mm_blend( face, num_coords, coords );
+ }
+
+ return error;
+ }
+
+
/* END */
diff --git a/src/pcf/pcfdrivr.c b/src/pcf/pcfdrivr.c
index 80f043f..eaf95c0 100644
--- a/src/pcf/pcfdrivr.c
+++ b/src/pcf/pcfdrivr.c
@@ -40,6 +40,7 @@ THE SOFTWARE.
#include "pcfread.h"
#include "pcferror.h"
+#include "pcfutil.h"
#undef FT_COMPONENT
#define FT_COMPONENT trace_pcfread
diff --git a/src/pcf/pcfutil.c b/src/pcf/pcfutil.c
index ddaca35..8fcf23d 100644
--- a/src/pcf/pcfutil.c
+++ b/src/pcf/pcfutil.c
@@ -74,7 +74,7 @@ in this Software without prior written authorization from The Open Group.
* Invert bit order within each BYTE of an array.
*/
- static void
+ FT_LOCAL_DEF( void )
BitOrderInvert( unsigned char* buf,
int nbytes )
{
@@ -90,7 +90,7 @@ in this Software without prior written authorization from The Open Group.
* Invert byte order within each 16-bits of an array.
*/
- static void
+ FT_LOCAL_DEF( void )
TwoByteSwap( unsigned char* buf,
int nbytes )
{
@@ -109,7 +109,7 @@ in this Software without prior written authorization from The Open Group.
* Invert byte order within each 32-bits of an array.
*/
- static void
+ FT_LOCAL_DEF( void )
FourByteSwap( unsigned char* buf,
int nbytes )
{
diff --git a/src/pcf/pcfutil.h b/src/pcf/pcfutil.h
index 017c515..1557be3 100644
--- a/src/pcf/pcfutil.h
+++ b/src/pcf/pcfutil.h
@@ -30,20 +30,24 @@ THE SOFTWARE.
#include <ft2build.h>
+#include FT_CONFIG_CONFIG_H
- static void
+FT_BEGIN_HEADER
+
+ FT_LOCAL( void )
BitOrderInvert( unsigned char* buf,
- int nbytes);
+ int nbytes );
- static void
+ FT_LOCAL( void )
TwoByteSwap( unsigned char* buf,
- int nbytes);
+ int nbytes );
- static void
+ FT_LOCAL( void )
FourByteSwap( unsigned char* buf,
- int nbytes);
+ int nbytes );
+FT_END_HEADER
#endif /* __PCFUTIL_H__ */
diff --git a/src/sfnt/sfobjs.c b/src/sfnt/sfobjs.c
index cb304fd..56781f7 100644
--- a/src/sfnt/sfobjs.c
+++ b/src/sfnt/sfobjs.c
@@ -4,7 +4,7 @@
/* */
/* SFNT object management (base). */
/* */
-/* Copyright 1996-2001, 2002, 2003 by */
+/* Copyright 1996-2001, 2002, 2003, 2004 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -431,11 +431,11 @@
/* do we have outlines in there? */
#ifdef FT_CONFIG_OPTION_INCREMENTAL
has_outline = FT_BOOL( face->root.internal->incremental_interface != 0 ||
- tt_face_lookup_table( face, TTAG_glyf ) != 0 ||
- tt_face_lookup_table( face, TTAG_CFF ) != 0 );
+ tt_face_lookup_table( face, TTAG_glyf ) != 0 ||
+ tt_face_lookup_table( face, TTAG_CFF ) != 0 );
#else
has_outline = FT_BOOL( tt_face_lookup_table( face, TTAG_glyf ) != 0 ||
- tt_face_lookup_table( face, TTAG_CFF ) != 0 );
+ tt_face_lookup_table( face, TTAG_CFF ) != 0 );
#endif
is_apple_sbit = 0;
@@ -546,6 +546,15 @@
if ( face->kern_pairs )
flags |= FT_FACE_FLAG_KERNING;
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+ /* Don't bother to load the tables unless somebody asks for them. */
+ /* No need to do work which will (probably) not be used. */
+ if ( tt_face_lookup_table( face, TTAG_glyf ) != 0 &&
+ tt_face_lookup_table( face, TTAG_fvar ) != 0 &&
+ tt_face_lookup_table( face, TTAG_gvar ) != 0 )
+ flags |= FT_FACE_FLAG_MULTIPLE_MASTERS;
+#endif
+
root->face_flags = flags;
/*********************************************************************/
diff --git a/src/truetype/rules.mk b/src/truetype/rules.mk
index bbb0c9f..7468426 100644
--- a/src/truetype/rules.mk
+++ b/src/truetype/rules.mk
@@ -3,7 +3,7 @@
#
-# Copyright 1996-2000, 2001, 2003 by
+# Copyright 1996-2000, 2001, 2003, 2004 by
# David Turner, Robert Wilhelm, and Werner Lemberg.
#
# This file is part of the FreeType project, and may only be used, modified,
@@ -29,6 +29,7 @@ TT_DRV_SRC := $(TT_DIR)/ttobjs.c \
$(TT_DIR)/ttpload.c \
$(TT_DIR)/ttgload.c \
$(TT_DIR)/ttinterp.c \
+ $(TT_DIR)/ttgxvar.c \
$(TT_DIR)/ttdriver.c
# TrueType driver headers
diff --git a/src/truetype/truetype.c b/src/truetype/truetype.c
index 1ed3ceb..4abb01e 100644
--- a/src/truetype/truetype.c
+++ b/src/truetype/truetype.c
@@ -4,7 +4,7 @@
/* */
/* FreeType TrueType driver component (body only). */
/* */
-/* Copyright 1996-2001 by */
+/* Copyright 1996-2001, 2004 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -19,14 +19,18 @@
#define FT_MAKE_OPTION_SINGLE_OBJECT
#include <ft2build.h>
-#include "ttdriver.c" /* driver interface */
-#include "ttpload.c" /* tables loader */
-#include "ttgload.c" /* glyph loader */
-#include "ttobjs.c" /* object manager */
+#include "ttdriver.c" /* driver interface */
+#include "ttpload.c" /* tables loader */
+#include "ttgload.c" /* glyph loader */
+#include "ttobjs.c" /* object manager */
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#include "ttinterp.c"
#endif
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+#include "ttgxvar.c" /* gx distortable font */
+#endif
+
/* END */
diff --git a/src/truetype/ttdriver.c b/src/truetype/ttdriver.c
index a5b800d..acd6be0 100644
--- a/src/truetype/ttdriver.c
+++ b/src/truetype/ttdriver.c
@@ -23,9 +23,18 @@
#include FT_TRUETYPE_IDS_H
#include FT_SERVICE_XFREE86_NAME_H
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+#include FT_MULTIPLE_MASTERS_H
+#include FT_SERVICE_MULTIPLE_MASTERS_H
+#endif
+
#include "ttdriver.h"
#include "ttgload.h"
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+#include "ttgxvar.h"
+#endif
+
#include "tterrors.h"
@@ -345,12 +354,28 @@
/*************************************************************************/
/*************************************************************************/
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+ static const FT_Service_MultiMastersRec tt_service_gx_multi_masters =
+ {
+ (FT_Get_MM_Func) NULL,
+ (FT_Set_MM_Design_Func) NULL,
+ (FT_Set_MM_Blend_Func) TT_Set_MM_Blend,
+ (FT_Get_MM_Var_Func) TT_Get_MM_Var,
+ (FT_Set_Var_Design_Func)TT_Set_Var_Design
+ };
+#endif
+
+
static const FT_ServiceDescRec tt_services[] =
{
- { FT_SERVICE_ID_XF86_NAME, FT_XF86_FORMAT_TRUETYPE },
+ { FT_SERVICE_ID_XF86_NAME, FT_XF86_FORMAT_TRUETYPE },
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+ { FT_SERVICE_ID_MULTI_MASTERS, &tt_service_gx_multi_masters },
+#endif
{ NULL, NULL }
};
+
static FT_Module_Interface
tt_get_interface( TT_Driver driver,
const char* tt_interface )
diff --git a/src/truetype/ttgload.c b/src/truetype/ttgload.c
index 00da0c2..0a2faf1 100644
--- a/src/truetype/ttgload.c
+++ b/src/truetype/ttgload.c
@@ -26,6 +26,10 @@
#include "ttgload.h"
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+#include "ttgxvar.h"
+#endif
+
#include "tterrors.h"
@@ -352,7 +356,7 @@
FT_Short *cont, *cont_limit;
- /* reading the contours endpoints & number of points */
+ /* reading the contours' endpoints & number of points */
cont = gloader->current.outline.contours;
cont_limit = cont + n_contours;
@@ -724,11 +728,38 @@
outline->tags[n_points + 3] = 0;
}
- /* Note that we return two more points that are not */
- /* part of the glyph outline. */
+ /* Note that we return four more points that are not */
+ /* part of the glyph outline. */
n_points += 4;
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+
+ if ( ((TT_Face)load->face)->doblend )
+ {
+ /* Deltas apply to the unscaled data. */
+ FT_Vector* deltas;
+ FT_Memory memory = load->face->memory;
+ FT_UInt i;
+
+
+ if ( ( error = TT_Vary_Get_Glyph_Deltas( (TT_Face)(load->face),
+ load->glyph_index,
+ &deltas,
+ n_points ) ) )
+ goto Exit;
+
+ for ( i = 0; i < n_points; ++i )
+ {
+ outline->points[i].x += deltas[i].x;
+ outline->points[i].y += deltas[i].y;
+ }
+
+ FT_FREE( deltas );
+ }
+
+#endif /* TT_CONFIG_OPTION_GX_VAR_SUPPORT */
+
/* set up zone for hinting */
tt_prepare_zone( zone, &gloader->current, 0, 0 );
@@ -803,9 +834,11 @@
load->pp4 = zone->cur[n_points - 1];
}
-#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
+#if defined( TT_CONFIG_OPTION_BYTECODE_INTERPRETER ) || \
+ defined( TT_CONFIG_OPTION_GX_VAR_SUPPORT )
Exit:
#endif
+
return error;
}
@@ -844,6 +877,10 @@
FT_Bool glyph_data_loaded = 0;
#endif
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+ FT_Vector *deltas;
+#endif
+
if ( recurse_count >= TT_MAX_COMPOSITE_RECURSE )
{
@@ -997,6 +1034,28 @@
loader->pp3.y = 0;
loader->pp4.y = loader->pp3.y-loader->vadvance;
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+ if ( ((TT_Face)(loader->face))->doblend )
+ {
+ /* this must be done before scaling */
+ FT_Memory memory = loader->face->memory;
+
+
+ if ( (error = TT_Vary_Get_Glyph_Deltas( (TT_Face)(loader->face),
+ glyph_index,
+ &deltas,
+ 4 ) ) )
+ goto Exit;
+
+ loader->pp1.x += deltas[0].x; loader->pp1.y += deltas[0].y;
+ loader->pp2.x += deltas[1].x; loader->pp2.y += deltas[1].y;
+ loader->pp3.x += deltas[2].x; loader->pp3.y += deltas[2].y;
+ loader->pp4.x += deltas[3].x; loader->pp4.y += deltas[3].y;
+
+ FT_FREE( deltas );
+ }
+#endif
+
if ( ( loader->load_flags & FT_LOAD_NO_SCALE ) == 0 )
{
loader->pp2.x = FT_MulFix( loader->pp2.x, x_scale );
@@ -1044,14 +1103,6 @@
loader->pp4.x = 0;
loader->pp4.y = loader->pp3.y - loader->vadvance;
- if ( ( loader->load_flags & FT_LOAD_NO_SCALE ) == 0 )
- {
- loader->pp1.x = FT_MulFix( loader->pp1.x, x_scale );
- loader->pp2.x = FT_MulFix( loader->pp2.x, x_scale );
- loader->pp3.y = FT_MulFix( loader->pp3.y, y_scale );
- loader->pp4.y = FT_MulFix( loader->pp4.y, y_scale );
- }
-
/***********************************************************************/
/***********************************************************************/
/***********************************************************************/
@@ -1125,6 +1176,56 @@
face->forget_glyph_frame( loader );
opened_frame = 0;
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+
+ if ( face->doblend )
+ {
+ FT_Int i, limit;
+ FT_SubGlyph subglyph;
+ FT_Memory memory = face->root.memory;
+
+
+ /* this provides additional offsets */
+ /* for each component's translation */
+
+ if ( (error = TT_Vary_Get_Glyph_Deltas(
+ face,
+ glyph_index,
+ &deltas,
+ gloader->current.num_subglyphs + 4 ) ) )
+ goto Exit;
+
+ /* Note: No subglyph reallocation here, our pointers are stable. */
+ subglyph = gloader->current.subglyphs + gloader->base.num_subglyphs;
+ limit = gloader->current.num_subglyphs;
+
+ for ( i = 0; i < limit; ++i, ++subglyph )
+ {
+ if ( subglyph->flags & ARGS_ARE_XY_VALUES )
+ {
+ subglyph->arg1 += deltas[i].x;
+ subglyph->arg2 += deltas[i].y;
+ }
+ }
+
+ loader->pp1.x += deltas[i + 0].x; loader->pp1.y += deltas[i + 0].y;
+ loader->pp2.x += deltas[i + 1].x; loader->pp2.y += deltas[i + 1].y;
+ loader->pp3.x += deltas[i + 2].x; loader->pp3.y += deltas[i + 2].y;
+ loader->pp4.x += deltas[i + 3].x; loader->pp4.y += deltas[i + 3].y;
+
+ FT_FREE( deltas );
+ }
+
+#endif /* TT_CONFIG_OPTION_GX_VAR_SUPPORT */
+
+ if ( ( loader->load_flags & FT_LOAD_NO_SCALE ) == 0 )
+ {
+ loader->pp1.x = FT_MulFix( loader->pp1.x, x_scale );
+ loader->pp2.x = FT_MulFix( loader->pp2.x, x_scale );
+ loader->pp3.y = FT_MulFix( loader->pp3.y, y_scale );
+ loader->pp4.y = FT_MulFix( loader->pp4.y, y_scale );
+ }
+
/* if the flag FT_LOAD_NO_RECURSE is set, we return the subglyph */
/* `as is' in the glyph slot (the client application will be */
/* responsible for interpreting these data)... */
diff --git a/src/truetype/ttgxvar.c b/src/truetype/ttgxvar.c
new file mode 100644
index 0000000..76bd07e
--- /dev/null
+++ b/src/truetype/ttgxvar.c
@@ -0,0 +1,1513 @@
+/***************************************************************************/
+/* */
+/* ttgxvar.c */
+/* */
+/* TrueType GX Font Variation loader */
+/* */
+/* Copyright 2004 by */
+/* David Turner, Robert Wilhelm, Werner Lemberg, and George Williams. */
+/* */
+/* 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. */
+/* */
+/***************************************************************************/
+
+
+/***************************************************************************/
+/* */
+/* Apple documents the `fvar', `gvar', `cvar', and `avar' tables at */
+/* */
+/* http://developer.apple.com/fonts/TTRefMan/RM06/Chap6[fgca]var.html */
+/* */
+/* The documentation for `fvar' is inconsistant. At one point it says */
+/* that `countSizePairs' should be 3, at another point 2. It should be 2. */
+/* */
+/* The documentation for `gvar' is not intelligible; `cvar' refers you to */
+/* `gvar' and is thus also incomprehensible. */
+/* */
+/* The documentation for `avar' appears correct, but Apple has no fonts */
+/* with an `avar' table, so it is hard to test. */
+/* */
+/* Many thanks to John Jenkins (at Apple) in figuring this out. */
+/* */
+/* */
+/* Apple's `kern' table has some references to tuple indices, but as there */
+/* is no indication where these indices are defined, nor how to */
+/* interpolate the kerning values (different tuples have different */
+/* classes) this issue is ignored. */
+/* */
+/***************************************************************************/
+
+
+#include <ft2build.h>
+#include FT_INTERNAL_DEBUG_H
+#include FT_CONFIG_CONFIG_H
+#include FT_INTERNAL_STREAM_H
+#include FT_INTERNAL_SFNT_H
+#include FT_TRUETYPE_IDS_H
+#include FT_TRUETYPE_TAGS_H
+#include FT_MULTIPLE_MASTERS_H
+
+#include "ttdriver.h"
+#include "ttpload.h"
+#include "ttgxvar.h"
+
+#include "tterrors.h"
+
+
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+
+
+#define FT_Stream_FTell( stream ) \
+ ( (stream)->cursor - (stream)->base )
+#define FT_Stream_SeekSet( stream, off ) \
+ ( (stream)->cursor = (stream)->base+(off) )
+
+
+ /*************************************************************************/
+ /* */
+ /* The macro FT_COMPONENT is used in trace mode. It is an implicit */
+ /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
+ /* messages during execution. */
+ /* */
+#undef FT_COMPONENT
+#define FT_COMPONENT trace_ttgxvar
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** Internal Routines *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+
+ /*************************************************************************/
+ /* */
+ /* The macro ALL_POINTS is used in `ft_var_readpackedpoints'. It */
+ /* indicates that there is a delta for every point without needing to */
+ /* enumerate all of them. */
+ /* */
+#define ALL_POINTS (FT_UShort*)(-1)
+
+
+ enum
+ {
+ GX_PT_POINTS_ARE_WORDS = 0x80,
+ GX_PT_POINT_RUN_COUNT_MASK = 0x7F
+ };
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* ft_var_readpackedpoints */
+ /* */
+ /* <Description> */
+ /* Read a set of points to which the following deltas will apply. */
+ /* Points are packed with a run length encoding. */
+ /* */
+ /* <Input> */
+ /* stream :: The data stream. */
+ /* */
+ /* <Output> */
+ /* point_cnt :: The number of points read. A zero value means that */
+ /* all points in the glyph will be affected, without */
+ /* enumerating them individually. */
+ /* */
+ /* <Return> */
+ /* An array of FT_UShort containing the affected points or the */
+ /* special value ALL_POINTS. */
+ /* */
+ static FT_UShort*
+ ft_var_readpackedpoints( FT_Stream stream,
+ FT_UInt *point_cnt )
+ {
+ FT_UShort *points;
+ FT_Int n;
+ FT_Int runcnt;
+ FT_Int i;
+ FT_Int j;
+ FT_Int first;
+ FT_Memory memory = stream->memory;
+ FT_Error error;
+
+
+ *point_cnt = n = FT_GET_BYTE();
+ if ( n == 0 )
+ return ALL_POINTS;
+
+ if ( n & GX_PT_POINTS_ARE_WORDS )
+ n = FT_GET_BYTE() | ( ( n & GX_PT_POINT_RUN_COUNT_MASK ) << 8 );
+
+ if ( FT_NEW_ARRAY( points, n ) )
+ return NULL;
+
+ i = 0;
+ while ( i < n )
+ {
+ runcnt = FT_GET_BYTE();
+ if ( runcnt & GX_PT_POINTS_ARE_WORDS )
+ {
+ runcnt = runcnt & GX_PT_POINT_RUN_COUNT_MASK;
+ points[i++] = first = FT_GET_USHORT();
+
+ /* first point not included in runcount */
+ for ( j = 0; j < runcnt; ++j )
+ points[i++] = ( first += FT_GET_USHORT() );
+ }
+ else
+ {
+ points[i++] = first = FT_GET_BYTE();
+
+ for ( j = 0; j < runcnt; ++j )
+ points[i++] = ( first += FT_GET_BYTE() );
+ }
+ }
+
+ return points;
+ }
+
+
+ enum
+ {
+ GX_DT_DELTAS_ARE_ZERO = 0x80,
+ GX_DT_DELTAS_ARE_WORDS = 0x40,
+ GX_DT_DELTA_RUN_COUNT_MASK = 0x3F
+ };
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* ft_var_readpackeddeltas */
+ /* */
+ /* <Description> */
+ /* Read a set of deltas. These are packed slightly differently than */
+ /* points. In particular there is no overall count. */
+ /* */
+ /* <Input> */
+ /* stream :: The data stream. */
+ /* */
+ /* delta_cnt :: The number of to be read. */
+ /* */
+ /* <Return> */
+ /* An array of FT_Short containing the deltas for the affected */
+ /* points. (This only gets the deltas for one dimension. It will */
+ /* generally be called twice, once for x, once for y. When used in */
+ /* cvt table, it will only be called once.) */
+ /* */
+ static FT_Short*
+ ft_var_readpackeddeltas( FT_Stream stream,
+ FT_Int delta_cnt )
+ {
+ FT_Short *deltas;
+ FT_Int runcnt;
+ FT_Int i;
+ FT_Int j;
+ FT_Memory memory = stream->memory;
+ FT_Error error;
+
+
+ if ( FT_NEW_ARRAY( deltas, delta_cnt ) )
+ return NULL;
+
+ i = 0;
+ while ( i < delta_cnt )
+ {
+ runcnt = FT_GET_BYTE();
+ if ( runcnt & GX_DT_DELTAS_ARE_ZERO )
+ {
+ /* runcnt zeroes get added */
+ for ( j = 0;
+ j <= ( runcnt & GX_DT_DELTA_RUN_COUNT_MASK ) && i < delta_cnt;
+ ++j )
+ deltas[i++] = 0;
+ }
+ else if ( runcnt & GX_DT_DELTAS_ARE_WORDS )
+ {
+ /* runcnt shorts from the stack */
+ for ( j = 0;
+ j <= ( runcnt & GX_DT_DELTA_RUN_COUNT_MASK ) && i < delta_cnt;
+ ++j )
+ deltas[i++] = FT_GET_SHORT();
+ }
+ else
+ {
+ /* runcnt signed bytes from the stack */
+ for ( j = 0;
+ j <= ( runcnt & GX_DT_DELTA_RUN_COUNT_MASK ) && i < delta_cnt;
+ ++j )
+ deltas[i++] = FT_GET_CHAR();
+ }
+
+ if ( j <= ( runcnt & GX_DT_DELTA_RUN_COUNT_MASK ) )
+ {
+ /* Bad format */
+ FT_FREE( deltas );
+ return NULL;
+ }
+ }
+
+ return deltas;
+ }
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* ft_var_load_avar */
+ /* */
+ /* <Description> */
+ /* Parse the `avar' table if present. It need not be, so we return */
+ /* nothing. */
+ /* */
+ /* <InOut> */
+ /* face :: The font face. */
+ /* */
+ static void
+ ft_var_load_avar( TT_Face face )
+ {
+ FT_Stream stream = FT_FACE_STREAM(face);
+ FT_Memory memory = stream->memory;
+ GX_Blend blend = face->blend;
+ GX_AVarSegment segment;
+ FT_Error error;
+ FT_ULong version;
+ FT_Long axisCount;
+ FT_Int i, j;
+ FT_ULong table_len;
+
+
+ blend->avar_checked = TRUE;
+ if ( ( error = face->goto_table( face, TTAG_avar, stream, &table_len ) ) )
+ return;
+ if ( FT_FRAME_ENTER( table_len ) )
+ return;
+
+ version = FT_GET_LONG();
+ axisCount = FT_GET_LONG();
+
+ if ( version != 0x00010000L ||
+ axisCount != (FT_Long)blend->mmvar->num_axis )
+ return;
+
+ if ( FT_NEW_ARRAY( blend->avar_segment, axisCount ) )
+ goto Exit;
+
+ segment = &blend->avar_segment[0];
+ for ( i = 0; i < axisCount; ++i, ++segment )
+ {
+ segment->pairCount = FT_GET_USHORT();
+ if ( FT_NEW_ARRAY( segment->correspondence, segment->pairCount ) )
+ {
+ /* Failure. Free everything we have done so far. */
+
+ for ( j = i - 1; j >= 0; --j )
+ FT_FREE( blend->avar_segment[j].correspondence );
+
+ FT_FREE( blend->avar_segment );
+ goto Exit;
+ }
+
+ for ( j = 0; j < segment->pairCount; ++j )
+ {
+ segment->correspondence[j].fromCoord =
+ FT_GET_SHORT() << 2; /* convert to Fixed */
+ segment->correspondence[j].toCoord =
+ FT_GET_SHORT()<<2; /* convert to Fixed */
+ }
+ }
+
+ Exit:
+ FT_FRAME_EXIT();
+ }
+
+
+ typedef struct GX_GVar_Head_ {
+ FT_Long version;
+ FT_UShort axisCount;
+ FT_UShort globalCoordCount;
+ FT_ULong offsetToCoord;
+ FT_UShort glyphCount;
+ FT_UShort flags;
+ FT_ULong offsetToData;
+
+ } GX_GVar_Head;
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* ft_var_load_gvar */
+ /* */
+ /* <Description> */
+ /* Parses the `gvar' table if present. If `fvar' is there, `gvar' */
+ /* had better be there too. */
+ /* */
+ /* <InOut> */
+ /* face :: The font face. */
+ /* */
+ /* <Return> */
+ /* FreeType error code. 0 means success. */
+ /* */
+ static FT_Error
+ ft_var_load_gvar( TT_Face face )
+ {
+ FT_Stream stream = face->root.stream;
+ FT_Memory memory = stream->memory;
+ GX_Blend blend = face->blend;
+ FT_Error error;
+ FT_UInt i, j;
+ FT_ULong table_len;
+ FT_ULong gvar_start;
+ FT_ULong OffsetToData;
+ GX_GVar_Head gvar_head;
+
+ static const FT_Frame_Field gvar_fields[] =
+ {
+
+#undef FT_STRUCTURE
+#define FT_STRUCTURE GX_GVar_Head
+
+ FT_FRAME_START( 20 ),
+ FT_FRAME_LONG ( version ),
+ FT_FRAME_USHORT( axisCount ),
+ FT_FRAME_USHORT( globalCoordCount ),
+ FT_FRAME_ULONG ( offsetToCoord ),
+ FT_FRAME_USHORT( glyphCount ),
+ FT_FRAME_USHORT( flags ),
+ FT_FRAME_ULONG ( offsetToData ),
+ FT_FRAME_END
+ };
+
+ if ( ( error = face->goto_table( face, TTAG_gvar, stream, &table_len ) ) )
+ goto Exit;
+
+ gvar_start = FT_STREAM_POS( );
+ if ( FT_STREAM_READ_FIELDS( gvar_fields, &gvar_head ) )
+ goto Exit;
+
+ blend->tuplecount = gvar_head.globalCoordCount;
+ blend->gv_glyphcnt = gvar_head.glyphCount;
+ OffsetToData = gvar_start + gvar_head.offsetToData;
+
+ if ( gvar_head.version != 0x00010000L ||
+ gvar_head.axisCount != blend->mmvar->num_axis )
+ {
+ error = TT_Err_Invalid_Table;
+ goto Exit;
+ }
+
+ if ( FT_NEW_ARRAY( blend->glyphoffsets, blend->gv_glyphcnt + 1 ) )
+ goto Exit;
+
+ if ( gvar_head.flags & 1 )
+ {
+ /* long offsets (one more offset than glyph, to mark size of last) */
+ if ( FT_FRAME_ENTER( ( blend->gv_glyphcnt + 1 ) * 4L ) )
+ goto Exit;
+
+ for ( i = 0; i <= blend->gv_glyphcnt; ++i )
+ blend->glyphoffsets[i] = OffsetToData + FT_GET_LONG();
+
+ FT_FRAME_EXIT();
+ }
+ else
+ {
+ /* short offsets (one more offset than glyph, to mark size of last) */
+ if ( FT_FRAME_ENTER( ( blend->gv_glyphcnt + 1 ) * 2L ) )
+ goto Exit;
+ for ( i = 0; i <= blend->gv_glyphcnt; ++i )
+ blend->glyphoffsets[i] = OffsetToData + FT_GET_USHORT() * 2;
+ /* XXX: Undocumented: `*2'! */
+
+ FT_FRAME_EXIT();
+ }
+
+ if ( blend->tuplecount != 0 )
+ {
+ if ( FT_NEW_ARRAY( blend->tuplecoords,
+ gvar_head.axisCount * blend->tuplecount ) )
+ goto Exit;
+
+ if ( FT_STREAM_SEEK( gvar_start + gvar_head.offsetToCoord ) ||
+ FT_FRAME_ENTER( blend->tuplecount
+ * gvar_head.axisCount
+ * sizeof ( short ) ) )
+ goto Exit;
+
+ for ( i = 0; i < blend->tuplecount; ++i )
+ for ( j = 0 ; j < gvar_head.axisCount; ++j )
+ blend->tuplecoords[i * gvar_head.axisCount + j] =
+ FT_GET_SHORT() << 2; /* convert to FT_Fixed */
+
+ FT_FRAME_EXIT();
+ }
+
+ Exit:
+ return error;
+ }
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* ft_var_apply_tuple */
+ /* */
+ /* <Description> */
+ /* Figure out whether a given tuple (design) applies to the current */
+ /* blend, and if so, what is the scaling factor. */
+ /* */
+ /* <Input> */
+ /* blend :: The current blend of the font. */
+ /* */
+ /* tupleIndex :: A flag saying whether this is an intermediate */
+ /* tuple or not. */
+ /* */
+ /* tuple_coords :: The coordiates of the tuple in normalized axis */
+ /* units. */
+ /* */
+ /* im_start_coords :: The initial coordinatess where this tuple */
+ /* starts to apply (for intermediate coordinates). */
+ /* */
+ /* im_end_coords :: The final coordinates after which this tuple no */
+ /* longer applies (for intermediate coordinates). */
+ /* */
+ /* <Return> */
+ /* An FT_Fixed value containing the scaling factor. */
+ /* */
+ static FT_Fixed
+ ft_var_apply_tuple( GX_Blend blend,
+ FT_UShort tupleIndex,
+ FT_Fixed* tuple_coords,
+ FT_Fixed* im_start_coords,
+ FT_Fixed* im_end_coords )
+ {
+ FT_UInt i;
+ FT_Fixed apply;
+ FT_Fixed temp;
+
+
+ apply = 0x10000L;
+ for ( i = 0; i < blend->num_axis; ++i )
+ {
+ if ( tuple_coords[i] == 0 )
+ /* It's not clear why (for intermediate tuples) we don't need */
+ /* to check against start/end -- the documentation says we don't. */
+ /* Similarly, it's unclear why we don't need to scale along the */
+ /* axis. */
+ continue;
+
+ else if ( blend->normalizedcoords[i] == 0 ||
+ ( blend->normalizedcoords[i] < 0 && tuple_coords[i] > 0 ) ||
+ ( blend->normalizedcoords[i] > 0 && tuple_coords[i] < 0 ) )
+ {
+ apply = 0;
+ break;
+ }
+
+ else if ( !( tupleIndex & GX_TI_INTERMEDIATE_TUPLE ) )
+ /* not an intermediate tuple */
+ apply = FT_MulDiv( apply,
+ blend->normalizedcoords[i] > 0
+ ? blend->normalizedcoords[i]
+ : blend->normalizedcoords[i],
+ 0x10000L );
+
+ else if ( blend->normalizedcoords[i] <= im_start_coords[i] ||
+ blend->normalizedcoords[i] >= im_end_coords[i] )
+ {
+ apply = 0;
+ break;
+ }
+
+ else if ( blend->normalizedcoords[i] < tuple_coords[i] )
+ {
+ temp = FT_MulDiv( blend->normalizedcoords[i] - im_start_coords[i],
+ 0x10000L,
+ tuple_coords[i] - im_start_coords[i]);
+ apply = FT_MulDiv( apply, temp, 0x10000L );
+ }
+
+ else
+ {
+ temp = FT_MulDiv( im_end_coords[i] - blend->normalizedcoords[i],
+ 0x10000L,
+ im_end_coords[i] - tuple_coords[i] );
+ apply = FT_MulDiv( apply, temp, 0x10000L );
+ }
+ }
+
+ return apply;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** MULTIPLE MASTERS SERVICE FUNCTIONS *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+
+ typedef struct GX_FVar_Head_ {
+ FT_Long version;
+ FT_UShort offsetToData;
+ FT_UShort countSizePairs;
+ FT_UShort axisCount;
+ FT_UShort axisSize;
+ FT_UShort instanceCount;
+ FT_UShort instanceSize;
+
+ } GX_FVar_Head;
+
+
+ typedef struct fvar_axis {
+ FT_ULong axisTag;
+ FT_ULong minValue;
+ FT_ULong defaultValue;
+ FT_ULong maxValue;
+ FT_UShort flags;
+ FT_UShort nameID;
+
+ } GX_FVar_Axis;
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* TT_Get_MM_Var */
+ /* */
+ /* <Description> */
+ /* Check that the font's `fvar' table is valid, parse it, and return */
+ /* those data. */
+ /* */
+ /* <InOut> */
+ /* face :: The font face. */
+ /* TT_Get_MM_Var initializes the blend structure. */
+ /* */
+ /* <Output> */
+ /* master :: The `fvar' data (must be freed by caller). */
+ /* */
+ /* <Return> */
+ /* FreeType error code. 0 means success. */
+ /* */
+ FT_LOCAL_DEF( FT_Error )
+ TT_Get_MM_Var( TT_Face face,
+ FT_MM_Var* *master )
+ {
+ FT_Stream stream = face->root.stream;
+ FT_Memory memory = face->root.memory;
+ FT_ULong table_len;
+ FT_Error error = TT_Err_Ok;
+ FT_ULong fvar_start;
+ FT_Int i, j;
+ FT_MM_Var* mmvar;
+ FT_Fixed* next_coords;
+ FT_String* next_name;
+ FT_Var_Axis* a;
+ FT_Var_Named_Style* ns;
+ GX_FVar_Head fvar_head;
+
+ static const FT_Frame_Field fvar_fields[] =
+ {
+
+#undef FT_STRUCTURE
+#define FT_STRUCTURE GX_FVar_Head
+
+ FT_FRAME_START( 14 ),
+ FT_FRAME_LONG ( version ),
+ FT_FRAME_USHORT( offsetToData ),
+ FT_FRAME_USHORT( countSizePairs ),
+ FT_FRAME_USHORT( axisCount ),
+ FT_FRAME_USHORT( axisSize ),
+ FT_FRAME_USHORT( instanceCount ),
+ FT_FRAME_USHORT( instanceSize ),
+ FT_FRAME_END
+ };
+
+ static const FT_Frame_Field fvaraxis_fields[] =
+ {
+
+#undef FT_STRUCTURE
+#define FT_STRUCTURE GX_FVar_Axis
+
+ FT_FRAME_START( 20 ),
+ FT_FRAME_ULONG ( axisTag ),
+ FT_FRAME_ULONG ( minValue ),
+ FT_FRAME_ULONG ( defaultValue ),
+ FT_FRAME_ULONG ( maxValue ),
+ FT_FRAME_USHORT( flags ),
+ FT_FRAME_USHORT( nameID ),
+ FT_FRAME_END
+ };
+
+
+ if ( face->blend == NULL )
+ {
+ /* both `fvar' and `gvar' must be present */
+ if ( ( error = face->goto_table( face, TTAG_gvar,
+ stream, &table_len ) ) )
+ goto Exit;
+ if ( ( error = face->goto_table( face, TTAG_fvar,
+ stream, &table_len ) ) )
+ goto Exit;
+
+ fvar_start = FT_STREAM_POS( );
+
+ if ( FT_STREAM_READ_FIELDS( fvar_fields, &fvar_head ) )
+ goto Exit;
+
+ if ( fvar_head.version != 0x00010000UL ||
+ fvar_head.countSizePairs != 2 ||
+ fvar_head.axisSize != 20 ||
+ fvar_head.instanceSize != 4 + 4 * fvar_head.axisCount ||
+ fvar_head.offsetToData + fvar_head.axisCount * 20U +
+ fvar_head.instanceCount * fvar_head.instanceSize > table_len )
+ {
+ error = TT_Err_Invalid_Table;
+ goto Exit;
+ }
+
+ if ( FT_ALLOC( face->blend, sizeof ( GX_BlendRec ) ) )
+ goto Exit;
+
+ face->blend->mmvar_len =
+ sizeof ( FT_MM_Var ) +
+ fvar_head.axisCount * sizeof ( FT_Var_Axis ) +
+ fvar_head.instanceCount * sizeof ( FT_Var_Named_Style ) +
+ fvar_head.instanceCount * fvar_head.axisCount * sizeof ( FT_Fixed ) +
+ 5 * fvar_head.axisCount;
+ if ( FT_ALLOC( mmvar, face->blend->mmvar_len ) )
+ goto Exit;
+ face->blend->mmvar = mmvar;
+
+ mmvar->num_axis =
+ fvar_head.axisCount;
+ mmvar->num_designs =
+ (FT_UInt)-1; /* meaningless in this context; each glyph */
+ /* may have a different number of designs */
+ /* (or tuples, as called by Apple) */
+ mmvar->num_namedstyles =
+ fvar_head.instanceCount;
+ mmvar->axis =
+ (FT_Var_Axis*)&(mmvar[1]);
+ mmvar->namedstyle =
+ (FT_Var_Named_Style*)&(mmvar->axis[fvar_head.axisCount]);
+
+ next_coords =
+ (FT_Fixed*)&(mmvar->namedstyle[fvar_head.instanceCount]);
+ for ( i = 0; i < fvar_head.instanceCount; ++i )
+ {
+ mmvar->namedstyle[i].coords = next_coords;
+ next_coords += fvar_head.axisCount;
+ }
+
+ next_name = (FT_String*)next_coords;
+ for ( i = 0; i < fvar_head.axisCount; ++i )
+ {
+ mmvar->axis[i].name = next_name;
+ next_name += 5;
+ }
+
+ if ( FT_STREAM_SEEK( fvar_start + fvar_head.offsetToData ) )
+ goto Exit;
+
+ a = mmvar->axis;
+ for ( i = 0; i < fvar_head.axisCount; ++i )
+ {
+ GX_FVar_Axis axis_rec;
+
+
+ if ( FT_STREAM_READ_FIELDS( fvaraxis_fields, &axis_rec ) )
+ goto Exit;
+ a->tag = axis_rec.axisTag;
+ a->minimum = axis_rec.minValue; /* A Fixed */
+ a->def = axis_rec.defaultValue; /* A Fixed */
+ a->maximum = axis_rec.maxValue; /* A Fixed */
+ a->strid = axis_rec.nameID;
+
+ a->name[0] = a->tag >> 24;
+ a->name[1] = ( a->tag >> 16 ) & 0xFF;
+ a->name[2] = ( a->tag >> 8 ) & 0xFF;
+ a->name[3] = ( a->tag ) & 0xFF;
+ a->name[4] = 0;
+
+ ++a;
+ }
+
+ ns = mmvar->namedstyle;
+ for ( i = 0; i < fvar_head.instanceCount; ++i )
+ {
+ if ( FT_FRAME_ENTER( 4 + 4 * fvar_head.axisCount ) )
+ goto Exit;
+
+ ns->strid = FT_GET_USHORT();
+ (void) /* flags = */ FT_GET_USHORT();
+
+ for ( j = 0; j < fvar_head.axisCount; ++j )
+ ns->coords[j] = FT_GET_ULONG(); /* A Fixed */
+
+ FT_FRAME_EXIT();
+ }
+ }
+
+ if ( master != NULL )
+ {
+ FT_UInt n;
+
+
+ if ( FT_ALLOC( mmvar, face->blend->mmvar_len ) )
+ goto Exit;
+ FT_MEM_COPY( mmvar, face->blend->mmvar, face->blend->mmvar_len );
+
+ mmvar->axis =
+ (FT_Var_Axis*)&(mmvar[1]);
+ mmvar->namedstyle =
+ (FT_Var_Named_Style*)&(mmvar->axis[mmvar->num_axis]);
+ next_coords =
+ (FT_Fixed*)&(mmvar->namedstyle[mmvar->num_namedstyles]);
+
+ for ( n = 0; n < mmvar->num_namedstyles; ++n )
+ {
+ mmvar->namedstyle[n].coords = next_coords;
+ next_coords += mmvar->num_axis;
+ }
+
+ a = mmvar->axis;
+ next_name = (FT_String*)next_coords;
+ for ( n = 0; n < mmvar->num_axis; ++n )
+ {
+ a->name = next_name;
+
+ /* standard PostScript names for some standard apple tags */
+ if ( a->tag == TTAG_wght )
+ a->name = (char *)"Weight";
+ else if ( a->tag == TTAG_wdth )
+ a->name = (char *)"Width";
+ else if ( a->tag == TTAG_opsz )
+ a->name = (char *)"OpticalSize";
+ else if ( a->tag == TTAG_slnt )
+ a->name = (char *)"Slant";
+
+ next_name += 5;
+ ++a;
+ }
+
+ *master = mmvar;
+ }
+
+ Exit:
+ return error;
+ }
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* TT_Set_MM_Blend */
+ /* */
+ /* <Description> */
+ /* Set the blend (normalized) coordinates for this instance of the */
+ /* font. Check that the `gvar' table is reasonable and does some */
+ /* initial preparation. */
+ /* */
+ /* <InOut> */
+ /* face :: The font. */
+ /* Initialize the blend structure with `gvar' data. */
+ /* */
+ /* <Input> */
+ /* num_coords :: Must be the axis count of the font. */
+ /* */
+ /* coords :: An array of num_coords, each between [-1,1]. */
+ /* */
+ /* <Return> */
+ /* FreeType error code. 0 means success. */
+ /* */
+ FT_LOCAL_DEF( FT_Error )
+ TT_Set_MM_Blend( TT_Face face,
+ FT_UInt num_coords,
+ FT_Fixed* coords )
+ {
+ FT_Error error = TT_Err_Ok;
+ GX_Blend blend;
+ FT_MM_Var* mmvar;
+ FT_UInt i;
+ FT_Memory memory = face->root.memory;
+
+ enum
+ {
+ mcvt_retain,
+ mcvt_modify,
+ mcvt_load
+
+ } manageCvt;
+
+
+ face->doblend = FALSE;
+
+ if ( face->blend == NULL )
+ {
+ if ( ( error = TT_Get_MM_Var( face, NULL) ) )
+ goto Exit;
+ }
+
+ blend = face->blend;
+ mmvar = blend->mmvar;
+
+ if ( num_coords != mmvar->num_axis )
+ {
+ error = TT_Err_Invalid_Argument;
+ goto Exit;
+ }
+
+ for ( i = 0; i < num_coords; ++i )
+ if ( coords[i] < -0x00010000L || coords[i] > 0x00010000L )
+ {
+ error = TT_Err_Invalid_Argument;
+ goto Exit;
+ }
+
+ if ( blend->glyphoffsets == NULL )
+ if ( ( error = ft_var_load_gvar( face ) ) )
+ goto Exit;
+
+ if ( blend->normalizedcoords == NULL )
+ {
+ if ( FT_NEW_ARRAY( blend->normalizedcoords, num_coords ) )
+ goto Exit;
+
+ manageCvt = mcvt_modify;
+
+ /* If we have not set the blend coordinates before this, then the */
+ /* cvt table will still be what we read from the `cvt ' table and */
+ /* we don't need to reload it. We may need to change it though... */
+ }
+ else
+ {
+ for ( i = 0;
+ i < num_coords && blend->normalizedcoords[i] == coords[i];
+ ++i );
+ if ( i == num_coords )
+ manageCvt = mcvt_retain;
+ else
+ manageCvt = mcvt_load;
+
+ /* If we don't change the blend coords then we don't need to do */
+ /* anything to the cvt table. It will be correct. Otherwise we */
+ /* no longer have the original cvt (it was modified when we set */
+ /* the blend last time), so we must reload and then modify it. */
+ }
+
+ blend->num_axis = num_coords;
+ FT_MEM_COPY( blend->normalizedcoords,
+ coords,
+ num_coords * sizeof ( FT_Fixed ) );
+
+ face->doblend = TRUE;
+
+ if ( face->cvt != NULL )
+ {
+ switch ( manageCvt )
+ {
+ case mcvt_load:
+ /* The cvt table has been loaded already; every time we change the */
+ /* blend we may need to reload and remodify the cvt table. */
+ FT_FREE( face->cvt );
+ face->cvt = NULL;
+
+ tt_face_load_cvt( face, face->root.stream );
+ break;
+
+ case mcvt_modify:
+ /* The original cvt table is in memory. All we need to do is */
+ /* apply the `cvar' table (if any). */
+ tt_face_vary_cvt( face, face->root.stream );
+ break;
+
+ case mcvt_retain:
+ /* The cvt table is correct for this set of coordinates. */
+ break;
+ }
+ }
+
+ Exit:
+ return error;
+ }
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* TT_Set_Var_Design */
+ /* */
+ /* <Description> */
+ /* Set the coordinates for the instance, measured in the user */
+ /* coordinate system. Parse the `avar' table (if present) to convert */
+ /* from user to normalized coordinates. */
+ /* */
+ /* <InOut> */
+ /* face :: The font face. */
+ /* Initialize the blend struct with `gvar' data. */
+ /* */
+ /* <Input> */
+ /* num_coords :: This must be the axis count of the font. */
+ /* */
+ /* coords :: A coordinate array with `num_coords' elements. */
+ /* */
+ /* <Return> */
+ /* FreeType error code. 0 means success. */
+ /* */
+ FT_LOCAL_DEF( FT_Error )
+ TT_Set_Var_Design( TT_Face face,
+ FT_UInt num_coords,
+ FT_Fixed* coords )
+ {
+ FT_Error error = TT_Err_Ok;
+ FT_Fixed* normalized = NULL;
+ GX_Blend blend;
+ FT_MM_Var* mmvar;
+ FT_UInt i, j;
+ FT_Var_Axis* a;
+ GX_AVarSegment av;
+ FT_Memory memory = face->root.memory;
+
+
+ if ( face->blend == NULL )
+ {
+ if ( ( error = TT_Get_MM_Var( face, NULL ) ) )
+ goto Exit;
+ }
+
+ blend = face->blend;
+ mmvar = blend->mmvar;
+
+ if ( num_coords != mmvar->num_axis )
+ {
+ error = TT_Err_Invalid_Argument;
+ goto Exit;
+ }
+
+ /* Axis normalization is a two stage process. First we normalize */
+ /* based on the [min,def,max] values for the axis to be [-1,0,1]. */
+ /* Then, if there's an `avar' table, we renormalize this range. */
+
+ if ( FT_NEW_ARRAY( normalized, mmvar->num_axis ) )
+ goto Exit;
+
+ a = mmvar->axis;
+ for ( i = 0; i < mmvar->num_axis; ++i, ++a )
+ {
+ if ( coords[i] > a->maximum || coords[i] < a->minimum )
+ {
+ error = TT_Err_Invalid_Argument;
+ goto Exit;
+ }
+
+ if ( coords[i] < a->def )
+ {
+ normalized[i] = -FT_MulDiv( coords[i] - a->def,
+ 0x10000L,
+ a->minimum - a->def );
+ }
+ else if ( a->maximum == a->def )
+ normalized[i] = 0;
+ else
+ {
+ normalized[i] = FT_MulDiv( coords[i] - a->def,
+ 0x10000L,
+ a->maximum - a->def );
+ }
+ }
+
+ if ( !blend->avar_checked )
+ ft_var_load_avar( face );
+
+ if ( blend->avar_segment != NULL )
+ {
+ av = blend->avar_segment;
+ for ( i = 0; i < mmvar->num_axis; ++i, ++av )
+ {
+ for ( j = 1; j < av->pairCount; ++j )
+ if ( normalized[i] < av->correspondence[j].fromCoord )
+ {
+ normalized[i] =
+ FT_MulDiv(
+ FT_MulDiv(
+ normalized[i] - av->correspondence[j - 1].fromCoord,
+ 0x10000L,
+ av->correspondence[j].fromCoord -
+ av->correspondence[j - 1].fromCoord ),
+ av->correspondence[j].toCoord -
+ av->correspondence[j - 1].toCoord,
+ 0x10000L ) +
+ av->correspondence[j - 1].toCoord;
+ break;
+ }
+ }
+ }
+
+ error = TT_Set_MM_Blend( face, num_coords, normalized );
+
+ Exit:
+ FT_FREE( normalized );
+ return error;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** GX VAR PARSING ROUTINES *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* tt_face_vary_cvt */
+ /* */
+ /* <Description> */
+ /* Modify the loaded cvt table according to the `cvar' table and the */
+ /* font's blend. */
+ /* */
+ /* <InOut> */
+ /* face :: A handle to the target face object. */
+ /* */
+ /* <Input> */
+ /* stream :: A handle to the input stream. */
+ /* */
+ /* <Return> */
+ /* FreeType error code. 0 means success. */
+ /* */
+ /* Most errors are ignored. It is perfectly valid not to have a */
+ /* `cvar' table even if there is a `gvar' and `fvar' table. */
+ /* */
+ FT_LOCAL_DEF( FT_Error )
+ tt_face_vary_cvt( TT_Face face,
+ FT_Stream stream )
+ {
+ FT_Error error;
+ FT_Memory memory = stream->memory;
+ FT_ULong table_start;
+ FT_ULong table_len;
+ FT_UInt tupleCount;
+ FT_ULong OffsetToData;
+ FT_ULong here;
+ FT_UInt i, j;
+ FT_Fixed* tuple_coords = NULL;
+ FT_Fixed* im_start_coords = NULL;
+ FT_Fixed* im_end_coords = NULL;
+ GX_Blend blend = face->blend;
+ FT_UInt point_count;
+ FT_UShort* localpoints;
+ FT_Short* deltas;
+
+
+ FT_TRACE2(( "CVAR " ));
+
+ if ( blend == NULL )
+ {
+ FT_TRACE2(( "no blend specified!\n" ));
+
+ error = TT_Err_Ok;
+ goto Exit;
+ }
+
+ if ( face->cvt == NULL )
+ {
+ FT_TRACE2(( "no `cvt ' table!\n" ));
+
+ error = TT_Err_Ok;
+ goto Exit;
+ }
+
+ error = face->goto_table( face, TTAG_cvar, stream, &table_len );
+ if ( error )
+ {
+ FT_TRACE2(( "is missing!\n" ));
+
+ error = TT_Err_Ok;
+ goto Exit;
+ }
+
+ if ( FT_FRAME_ENTER( table_len ) )
+ {
+ error = TT_Err_Ok;
+ goto Exit;
+ }
+
+ table_start = FT_Stream_FTell( stream );
+ if ( FT_GET_LONG() != 0x00010000L )
+ {
+ FT_TRACE2(( "bad table version!\n" ));
+
+ error = TT_Err_Ok;
+ goto FExit;
+ }
+
+ if ( FT_NEW_ARRAY( tuple_coords, blend->num_axis ) ||
+ FT_NEW_ARRAY( im_start_coords, blend->num_axis ) ||
+ FT_NEW_ARRAY( im_end_coords, blend->num_axis ) )
+ goto FExit;
+
+ tupleCount = FT_GET_USHORT();
+ OffsetToData = table_start + FT_GET_USHORT();
+
+ /* The documentation implies there are flags packed into the */
+ /* tuplecount, but John Jenkins says that shared points don't apply */
+ /* to `cvar', and no other flags are defined. */
+
+ for ( i = 0; i < ( tupleCount & 0xFFF ); ++i )
+ {
+ FT_UInt tupleDataSize;
+ FT_UInt tupleIndex;
+ FT_Fixed apply;
+
+
+ tupleDataSize = FT_GET_USHORT();
+ tupleIndex = FT_GET_USHORT();
+
+ /* There is no provision here for a global tuple coordinate section, */
+ /* so John says. There are no tuple indices, just embedded tuples. */
+
+ if ( tupleIndex & GX_TI_EMBEDDED_TUPLE_COORD )
+ {
+ for ( j = 0; j < blend->num_axis; ++j )
+ tuple_coords[j] = FT_GET_SHORT() << 2; /* convert from */
+ /* short frac to fixed */
+ }
+ else
+ {
+ /* skip this tuple; it makes no sense */
+
+ if ( tupleIndex & GX_TI_INTERMEDIATE_TUPLE )
+ for ( j = 0; j < 2 * blend->num_axis; ++j )
+ (void)FT_GET_SHORT();
+
+ OffsetToData += tupleDataSize;
+ continue;
+ }
+
+ if ( tupleIndex & GX_TI_INTERMEDIATE_TUPLE )
+ {
+ for ( j = 0; j < blend->num_axis; ++j )
+ im_start_coords[j] = FT_GET_SHORT() << 2;
+ for ( j = 0; j < blend->num_axis; ++j )
+ im_end_coords[j] = FT_GET_SHORT() << 2;
+ }
+
+ apply = ft_var_apply_tuple( blend,
+ tupleIndex,
+ tuple_coords,
+ im_start_coords,
+ im_end_coords );
+ if ( /* tuple isn't active for our blend */
+ apply == 0 ||
+ /* global points not allowed, */
+ /* if they aren't local, makes no sense */
+ !( tupleIndex & GX_TI_PRIVATE_POINT_NUMBERS ) )
+ {
+ OffsetToData += tupleDataSize;
+ continue;
+ }
+
+ here = FT_Stream_FTell( stream );
+
+ FT_Stream_SeekSet( stream, OffsetToData );
+
+ localpoints = ft_var_readpackedpoints( stream, &point_count );
+ deltas = ft_var_readpackeddeltas( stream,
+ point_count == 0 ? face->cvt_size
+ : point_count );
+ if ( localpoints == NULL || deltas == NULL )
+ /* failure, ignore it */;
+
+ else if ( localpoints == ALL_POINTS )
+ {
+ /* this means that there are deltas for every entry in cvt */
+ for ( j = 0; j < face->cvt_size; ++j )
+ face->cvt[j] += FT_MulFix( deltas[j], apply );
+ }
+
+ else
+ {
+ for ( j = 0; j < point_count; ++j )
+ face->cvt[localpoints[j]] += FT_MulFix( deltas[j], apply );
+ }
+
+ if ( localpoints != ALL_POINTS )
+ FT_FREE( localpoints );
+ FT_FREE( deltas );
+
+ OffsetToData += tupleDataSize;
+
+ FT_Stream_SeekSet( stream, here );
+ }
+
+ FExit:
+ FT_FRAME_EXIT();
+
+ Exit:
+ FT_FREE( tuple_coords );
+ FT_FREE( im_start_coords );
+ FT_FREE( im_end_coords );
+
+ return error;
+ }
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* TT_Vary_Get_Glyph_Deltas */
+ /* */
+ /* <Description> */
+ /* Load the appropriate deltas for the current glyph. */
+ /* */
+ /* <Input> */
+ /* face :: A handle to the target face object. */
+ /* */
+ /* glyph_index :: The index of the glyph being modified. */
+ /* */
+ /* n_points :: The number of the points in the glyph, including */
+ /* phantom points. */
+ /* */
+ /* <Output> */
+ /* deltas :: The array of points to change. */
+ /* */
+ /* <Return> */
+ /* FreeType error code. 0 means success. */
+ /* */
+ FT_LOCAL_DEF( FT_Error )
+ TT_Vary_Get_Glyph_Deltas( TT_Face face,
+ FT_UInt glyph_index,
+ FT_Vector* *deltas,
+ FT_UInt n_points )
+ {
+ FT_Stream stream = face->root.stream;
+ FT_Memory memory = stream->memory;
+ GX_Blend blend = face->blend;
+ FT_Vector* delta_xy;
+
+ FT_Error error;
+ FT_ULong glyph_start;
+ FT_UInt tupleCount;
+ FT_ULong OffsetToData;
+ FT_ULong here;
+ FT_UInt i, j;
+ FT_Fixed* tuple_coords = NULL;
+ FT_Fixed* im_start_coords = NULL;
+ FT_Fixed* im_end_coords = NULL;
+ FT_UInt point_count, spoint_count = 0;
+ FT_UShort* sharedpoints = NULL;
+ FT_UShort* localpoints;
+ FT_UShort* points;
+ FT_Short *deltas_x, *deltas_y;
+
+
+ if ( !face->doblend || blend == NULL )
+ return TT_Err_Invalid_Argument;
+
+ if ( ( error = FT_NEW_ARRAY( delta_xy, n_points ) ) )
+ goto Fail;
+ *deltas = delta_xy;
+
+ if ( glyph_index >= blend->gv_glyphcnt ||
+ blend->glyphoffsets[glyph_index] ==
+ blend->glyphoffsets[glyph_index + 1] )
+ return TT_Err_Ok; /* no variation data for this glyph */
+
+ if ( FT_STREAM_SEEK( blend->glyphoffsets[glyph_index] ) ||
+ FT_FRAME_ENTER( blend->glyphoffsets[glyph_index + 1] -
+ blend->glyphoffsets[glyph_index] ) )
+ goto Fail;
+
+ glyph_start = FT_Stream_FTell( stream );
+
+ /* each set of glyph variation data is formatted similarly to `cvar' */
+ /* (except we get shared points and global tuples) */
+
+ if ( FT_NEW_ARRAY( tuple_coords, blend->num_axis ) ||
+ FT_NEW_ARRAY( im_start_coords, blend->num_axis ) ||
+ FT_NEW_ARRAY( im_end_coords, blend->num_axis ) )
+ goto Exit;
+
+ tupleCount = FT_GET_USHORT();
+ OffsetToData = glyph_start + FT_GET_USHORT();
+
+ if ( tupleCount & GX_TC_TUPLES_SHARE_POINT_NUMBERS )
+ {
+ here = FT_Stream_FTell( stream );
+
+ FT_Stream_SeekSet( stream, OffsetToData );
+
+ sharedpoints = ft_var_readpackedpoints( stream, &spoint_count );
+ OffsetToData = FT_Stream_FTell( stream );
+
+ FT_Stream_SeekSet( stream, here );
+ }
+
+ for ( i = 0; i < ( tupleCount & GX_TC_TUPLE_COUNT_MASK ); ++i )
+ {
+ FT_UInt tupleDataSize;
+ FT_UInt tupleIndex;
+ FT_Fixed apply;
+
+
+ tupleDataSize = FT_GET_USHORT();
+ tupleIndex = FT_GET_USHORT();
+
+ if ( tupleIndex & GX_TI_EMBEDDED_TUPLE_COORD )
+ {
+ for ( j = 0; j < blend->num_axis; ++j )
+ tuple_coords[j] = FT_GET_SHORT() << 2; /* convert from */
+ /* short frac to fixed */
+ }
+ else if ( ( tupleIndex & GX_TI_TUPLE_INDEX_MASK ) >= blend->tuplecount )
+ {
+ error = TT_Err_Invalid_Table;
+ goto Fail;
+ }
+ else
+ {
+ FT_MEM_COPY(
+ tuple_coords,
+ &blend->tuplecoords[(tupleIndex & 0xFFF) * blend->num_axis],
+ blend->num_axis * sizeof ( FT_Fixed ) );
+ }
+
+ if ( tupleIndex & GX_TI_INTERMEDIATE_TUPLE )
+ {
+ for ( j = 0; j < blend->num_axis; ++j )
+ im_start_coords[j] = FT_GET_SHORT() << 2;
+ for ( j = 0; j < blend->num_axis; ++j )
+ im_end_coords[j] = FT_GET_SHORT() << 2;
+ }
+
+ apply = ft_var_apply_tuple( blend,
+ tupleIndex,
+ tuple_coords,
+ im_start_coords,
+ im_end_coords );
+
+ if ( apply == 0 ) /* tuple isn't active for our blend */
+ {
+ OffsetToData += tupleDataSize;
+ continue;
+ }
+
+ here = FT_Stream_FTell( stream );
+
+ if ( tupleIndex & GX_TI_PRIVATE_POINT_NUMBERS )
+ {
+ FT_Stream_SeekSet( stream, OffsetToData );
+
+ localpoints = ft_var_readpackedpoints( stream, &point_count );
+ points = localpoints;
+ }
+ else
+ {
+ points = sharedpoints;
+ point_count = spoint_count;
+ }
+
+ deltas_x = ft_var_readpackeddeltas( stream,
+ point_count == 0 ? n_points
+ : point_count );
+ deltas_y = ft_var_readpackeddeltas( stream,
+ point_count == 0 ? n_points
+ : point_count );
+
+ if ( points == NULL || deltas_y == NULL || deltas_x == NULL )
+ /* failure, ignore it */;
+
+ else if ( points == ALL_POINTS )
+ {
+ /* this means that there are deltas for every point in the glyph */
+ for ( j = 0; j < n_points; ++j )
+ {
+ delta_xy[j].x += FT_MulFix( deltas_x[j], apply );
+ delta_xy[j].y += FT_MulFix( deltas_y[j], apply );
+ }
+ }
+
+ else
+ {
+ for ( j = 0; j < point_count; ++j )
+ {
+ delta_xy[localpoints[j]].x += FT_MulFix( deltas_x[j], apply );
+ delta_xy[localpoints[j]].y += FT_MulFix( deltas_y[j], apply );
+ }
+ }
+
+ if ( localpoints != ALL_POINTS )
+ FT_FREE( localpoints );
+ FT_FREE( deltas_x );
+ FT_FREE( deltas_y );
+
+ OffsetToData += tupleDataSize;
+
+ FT_Stream_SeekSet( stream, here );
+ }
+
+ goto Exit;
+
+ Fail:
+ FT_FREE( delta_xy );
+ *deltas = NULL;
+
+ Exit:
+ FT_FREE( tuple_coords );
+ FT_FREE( im_start_coords );
+ FT_FREE( im_end_coords );
+
+ return error;
+ }
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* tt_done_blend */
+ /* */
+ /* <Description> */
+ /* Frees the blend internal data structure. */
+ /* */
+ FT_LOCAL_DEF( void )
+ tt_done_blend( FT_Memory memory,
+ GX_Blend blend )
+ {
+ if ( blend != NULL )
+ {
+ FT_UInt i;
+
+
+ FT_FREE( blend->normalizedcoords );
+ FT_FREE( blend->mmvar );
+
+ if ( blend->avar_segment != NULL )
+ {
+ for ( i = 0; i < blend->num_axis; ++i )
+ FT_FREE( blend->avar_segment[i].correspondence );
+ FT_FREE( blend->avar_segment );
+ }
+
+ FT_FREE( blend->tuplecoords );
+ FT_FREE( blend->glyphoffsets );
+ FT_FREE( blend );
+ }
+ }
+
+#endif /* TT_CONFIG_OPTION_GX_VAR_SUPPORT */
+
+
+/* END */
diff --git a/src/truetype/ttgxvar.h b/src/truetype/ttgxvar.h
new file mode 100644
index 0000000..3a1c4b5
--- /dev/null
+++ b/src/truetype/ttgxvar.h
@@ -0,0 +1,182 @@
+/***************************************************************************/
+/* */
+/* ttgxvar.h */
+/* */
+/* TrueType GX Font Variation loader (specification) */
+/* */
+/* Copyright 2004 by */
+/* David Turner, Robert Wilhelm, Werner Lemberg and George Williams. */
+/* */
+/* 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. */
+/* */
+/***************************************************************************/
+
+
+#ifndef __TTGXVAR_H__
+#define __TTGXVAR_H__
+
+
+#include <ft2build.h>
+#include "ttobjs.h"
+
+
+FT_BEGIN_HEADER
+
+
+ /*************************************************************************/
+ /* */
+ /* <Struct> */
+ /* GX_AVarCorrespondenceRec */
+ /* */
+ /* <Description> */
+ /* A data structure representing `shortFracCorrespondence' in `avar' */
+ /* table according to the specifications from Apple. */
+ /* */
+ typedef struct GX_AVarCorrespondenceRec_
+ {
+ FT_Fixed fromCoord;
+ FT_Fixed toCoord;
+
+ } GX_AVarCorrespondenceRec_, *GX_AVarCorrespondence;
+
+
+ /*************************************************************************/
+ /* */
+ /* <Struct> */
+ /* GX_AVarRec */
+ /* */
+ /* <Description> */
+ /* Data from the segment field of `avar' table. */
+ /* There is one of these for each axis. */
+ /* */
+ typedef struct GX_AVarSegmentRec_
+ {
+ FT_UShort pairCount;
+ GX_AVarCorrespondence correspondence; /* array with pairCount entries */
+
+ } GX_AVarSegmentRec, *GX_AVarSegment;
+
+
+ /*************************************************************************/
+ /* */
+ /* <Struct> */
+ /* GX_BlendRec */
+ /* */
+ /* <Description> */
+ /* Data for interpolating a font from a distortable font specified */
+ /* by the GX *var tables ([fgca]var). */
+ /* */
+ /* <Fields> */
+ /* num_axis :: The number of axes along which interpolation */
+ /* may happen */
+ /* */
+ /* normalizedcoords :: A normalized value (between [-1,1]) indicating */
+ /* the contribution along each axis to the final */
+ /* interpolated font. */
+ /* */
+ typedef struct GS_BlendRec_
+ {
+ FT_UInt num_axis;
+ FT_Fixed* normalizedcoords;
+
+ FT_MM_Var* mmvar;
+ FT_Int mmvar_len;
+
+ FT_Bool avar_checked;
+ GX_AVarSegment avar_segment;
+
+ FT_UInt tuplecount; /* shared tuples in `gvar' */
+ FT_Fixed* tuplecoords; /* tuplecoords[tuplecount][num_axis] */
+
+ FT_UInt gv_glyphcnt;
+ FT_ULong* glyphoffsets;
+
+ } GX_BlendRec;
+
+
+ /*************************************************************************/
+ /* */
+ /* <enum> */
+ /* GX_TupleCountFlags */
+ /* */
+ /* <Description> */
+ /* Flags used within the `TupleCount' field of the `gvar' table. */
+ /* */
+ typedef enum GX_TupleCountFlags_
+ {
+ GX_TC_TUPLES_SHARE_POINT_NUMBERS = 0x8000,
+ GX_TC_RESERVED_TUPLE_FLAGS = 0x7000,
+ GX_TC_TUPLE_COUNT_MASK = 0x0FFF
+
+ } GX_TupleCountFlags;
+
+
+ /*************************************************************************/
+ /* */
+ /* <enum> */
+ /* GX_TupleIndexFlags */
+ /* */
+ /* <Description> */
+ /* Flags used within the `TupleIndex' field of the `gvar' and `cvar' */
+ /* tables. */
+ /* */
+ typedef enum GX_TupleIndexFlags_
+ {
+ GX_TI_EMBEDDED_TUPLE_COORD = 0x8000,
+ GX_TI_INTERMEDIATE_TUPLE = 0x4000,
+ GX_TI_PRIVATE_POINT_NUMBERS = 0x2000,
+ GX_TI_RESERVED_TUPLE_FLAG = 0x1000,
+ GX_TI_TUPLE_INDEX_MASK = 0x0FFF
+
+ } GX_TupleIndexFlags;
+
+
+#define TTAG_wght FT_MAKE_TAG( 'w', 'g', 'h', 't' )
+#define TTAG_wdth FT_MAKE_TAG( 'w', 'd', 't', 'h' )
+#define TTAG_opsz FT_MAKE_TAG( 'o', 'p', 's', 'z' )
+#define TTAG_slnt FT_MAKE_TAG( 's', 'l', 'n', 't' )
+
+
+ FT_LOCAL_DEF( FT_Error )
+ TT_Set_MM_Blend( TT_Face face,
+ FT_UInt num_coords,
+ FT_Fixed* coords );
+
+ FT_LOCAL_DEF( FT_Error )
+ TT_Set_Var_Design( TT_Face face,
+ FT_UInt num_coords,
+ FT_Fixed* coords );
+
+ FT_LOCAL_DEF( FT_Error )
+ TT_Get_MM_Var( TT_Face face,
+ FT_MM_Var* *master );
+
+
+ FT_LOCAL_DEF( FT_Error )
+ tt_face_vary_cvt( TT_Face face,
+ FT_Stream stream );
+
+
+ FT_LOCAL_DEF( FT_Error )
+ TT_Vary_Get_Glyph_Deltas( TT_Face face,
+ FT_UInt glyph_index,
+ FT_Vector* *deltas,
+ FT_UInt n_points );
+
+
+ FT_LOCAL_DEF( void )
+ tt_done_blend( FT_Memory memory,
+ GX_Blend blend );
+
+
+FT_END_HEADER
+
+
+#endif /* __TTGXVAR_H__ */
+
+
+/* END */
diff --git a/src/truetype/ttobjs.c b/src/truetype/ttobjs.c
index d5210f2..579dc4a 100644
--- a/src/truetype/ttobjs.c
+++ b/src/truetype/ttobjs.c
@@ -4,7 +4,7 @@
/* */
/* Objects manager (body). */
/* */
-/* Copyright 1996-2001, 2002, 2003 by */
+/* Copyright 1996-2001, 2002, 2003, 2004 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -37,6 +37,10 @@
#include FT_TRUETYPE_UNPATENTED_H
#endif
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+#include "ttgxvar.h"
+#endif
+
/*************************************************************************/
/* */
/* The macro FT_COMPONENT is used in trace mode. It is an implicit */
@@ -293,6 +297,11 @@
FT_FRAME_RELEASE( face->cvt_program );
face->font_program_size = 0;
face->cvt_program_size = 0;
+
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+ tt_done_blend( memory, face->blend );
+ face->blend = NULL;
+#endif
}
diff --git a/src/truetype/ttpload.c b/src/truetype/ttpload.c
index 4066cd7..9cae477 100644
--- a/src/truetype/ttpload.c
+++ b/src/truetype/ttpload.c
@@ -4,7 +4,7 @@
/* */
/* TrueType glyph data/program tables loader (body). */
/* */
-/* Copyright 1996-2001, 2002 by */
+/* Copyright 1996-2001, 2002, 2004 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -24,6 +24,10 @@
#include "ttpload.h"
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+#include "ttgxvar.h"
+#endif
+
#include "tterrors.h"
@@ -186,6 +190,11 @@
FT_FRAME_EXIT();
FT_TRACE2(( "loaded\n" ));
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+ if ( face->doblend )
+ error = tt_face_vary_cvt( face, stream );
+#endif
+
Exit:
return error;
}
diff --git a/src/type1/t1driver.c b/src/type1/t1driver.c
index fd201db..b37ae77 100644
--- a/src/type1/t1driver.c
+++ b/src/type1/t1driver.c
@@ -4,7 +4,7 @@
/* */
/* Type 1 driver interface (body). */
/* */
-/* Copyright 1996-2001, 2002, 2003 by */
+/* Copyright 1996-2001, 2002, 2003, 2004 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -129,9 +129,11 @@
#ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT
static const FT_Service_MultiMastersRec t1_service_multi_masters =
{
- (FT_Get_MM_Func) T1_Get_Multi_Master,
- (FT_Set_MM_Design_Func)T1_Set_MM_Design,
- (FT_Set_MM_Blend_Func) T1_Set_MM_Blend
+ (FT_Get_MM_Func) T1_Get_Multi_Master,
+ (FT_Set_MM_Design_Func) T1_Set_MM_Design,
+ (FT_Set_MM_Blend_Func) T1_Set_MM_Blend,
+ (FT_Get_MM_Var_Func) T1_Get_MM_Var,
+ (FT_Set_Var_Design_Func)T1_Set_Var_Design
};
#endif
diff --git a/src/type1/t1load.c b/src/type1/t1load.c
index 16a0341..b5b0522 100644
--- a/src/type1/t1load.c
+++ b/src/type1/t1load.c
@@ -211,6 +211,60 @@
}
+#define FT_INT_TO_FIXED( a ) ( (a) << 16 )
+#define FT_FIXED_TO_INT( a ) ( FT_RoundFix( a ) >> 16 )
+
+
+ /*************************************************************************/
+ /* */
+ /* Just a wrapper around T1_Get_Multi_Master to support the different */
+ /* arguments needed by the GX var distortable fonts. */
+ /* */
+ FT_LOCAL_DEF( FT_Error )
+ T1_Get_MM_Var( T1_Face face,
+ FT_MM_Var* *master )
+ {
+ FT_Memory memory = face->root.memory;
+ FT_MM_Var *mmvar;
+ FT_Multi_Master mmaster;
+ FT_Error error;
+ FT_UInt i;
+
+
+ error = T1_Get_Multi_Master( face, &mmaster );
+ if ( error )
+ goto Exit;
+ if ( FT_ALLOC( mmvar,
+ sizeof ( FT_MM_Var ) +
+ mmaster.num_axis * sizeof ( FT_Var_Axis ) ) )
+ goto Exit;
+
+ mmvar->num_axis = mmaster.num_axis;
+ mmvar->num_designs = mmaster.num_designs;
+ mmvar->num_namedstyles = (FT_UInt)-1; /* Does not apply */
+ mmvar->axis = (FT_Var_Axis*)&mmvar[1];
+ /* Point to axes after MM_Var struct */
+ mmvar->namedstyle = NULL;
+
+ for ( i = 0 ; i < mmaster.num_axis; ++i )
+ {
+ mmvar->axis[i].name = mmaster.axis[i].name;
+ mmvar->axis[i].minimum = FT_INT_TO_FIXED( mmaster.axis[i].minimum);
+ mmvar->axis[i].maximum = FT_INT_TO_FIXED( mmaster.axis[i].maximum);
+ mmvar->axis[i].def = ( mmvar->axis[i].minimum +
+ mmvar->axis[i].maximum ) / 2;
+ /* Does not apply. But this value is in range */
+ mmvar->axis[i].tag = 0xFFFFFFFFLU; /* Does not apply */
+ mmvar->axis[i].strid = 0xFFFFFFFFLU; /* Does not apply */
+ }
+
+ *master = mmvar;
+
+ Exit:
+ return error;
+ }
+
+
FT_LOCAL_DEF( FT_Error )
T1_Set_MM_Blend( T1_Face face,
FT_UInt num_coords,
@@ -329,6 +383,33 @@
}
+ /*************************************************************************/
+ /* */
+ /* Just a wrapper around T1_Set_MM_Design to support the different */
+ /* arguments needed by the GX var distortable fonts. */
+ /* */
+ FT_LOCAL_DEF( FT_Error )
+ T1_Set_Var_Design( T1_Face face,
+ FT_UInt num_coords,
+ FT_Fixed* coords )
+ {
+ FT_Long lcoords[4]; /* maximum axis count is 4 */
+ FT_UInt i;
+ FT_Error error;
+
+
+ error = T1_Err_Invalid_Argument;
+ if ( num_coords <= 4 && num_coords > 0 )
+ {
+ for ( i = 0; i < num_coords; ++i )
+ lcoords[i] = FT_FIXED_TO_INT( coords[i] );
+ error = T1_Set_MM_Design( face, num_coords, lcoords );
+ }
+
+ return error;
+ }
+
+
FT_LOCAL_DEF( void )
T1_Done_Blend( T1_Face face )
{
diff --git a/src/type1/t1load.h b/src/type1/t1load.h
index 804a010..9823f53 100644
--- a/src/type1/t1load.h
+++ b/src/type1/t1load.h
@@ -4,7 +4,7 @@
/* */
/* Type 1 font loader (specification). */
/* */
-/* Copyright 1996-2001, 2002 by */
+/* Copyright 1996-2001, 2002, 2004 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -60,6 +60,10 @@ FT_BEGIN_HEADER
T1_Get_Multi_Master( T1_Face face,
FT_Multi_Master* master );
+ FT_LOCAL_DEF( FT_Error )
+ T1_Get_MM_Var( T1_Face face,
+ FT_MM_Var* *master );
+
FT_LOCAL( FT_Error )
T1_Set_MM_Blend( T1_Face face,
FT_UInt num_coords,
@@ -70,6 +74,11 @@ FT_BEGIN_HEADER
FT_UInt num_coords,
FT_Long* coords );
+ FT_LOCAL_DEF( FT_Error )
+ T1_Set_Var_Design( T1_Face face,
+ FT_UInt num_coords,
+ FT_Fixed* coords );
+
FT_LOCAL( void )
T1_Done_Blend( T1_Face face );