ref: 8def3c897f3dc31797796220c443fffd625e55dc
dir: /src/truetype/ttgxvar.h/
/***************************************************************************/ /* */ /* 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 GX_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( FT_Error ) TT_Set_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 ); FT_LOCAL( FT_Error ) TT_Get_MM_Var( TT_Face face, FT_MM_Var* *master ); FT_LOCAL( FT_Error ) tt_face_vary_cvt( TT_Face face, FT_Stream stream ); FT_LOCAL( FT_Error ) TT_Vary_Get_Glyph_Deltas( TT_Face face, FT_UInt glyph_index, FT_Vector* *deltas, FT_UInt n_points ); FT_LOCAL( void ) tt_done_blend( FT_Memory memory, GX_Blend blend ); FT_END_HEADER #endif /* __TTGXVAR_H__ */ /* END */