-/***************************************************************************/
-/* */
-/* ttgxvar.h */
-/* */
-/* TrueType GX Font Variation loader (specification) */
-/* */
-/* Copyright 2004-2016 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. */
-/* */
-/***************************************************************************/
+/****************************************************************************
+ *
+ * ttgxvar.h
+ *
+ * TrueType GX Font Variation loader (specification)
+ *
+ * Copyright (C) 2004-2020 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. */
- /* */
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+
+ /**************************************************************************
+ *
+ * @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;
} GX_AVarCorrespondenceRec_, *GX_AVarCorrespondence;
- /*************************************************************************/
- /* */
- /* <Struct> */
- /* GX_AVarRec */
- /* */
- /* <Description> */
- /* Data from the segment field of `avar' table. */
- /* There is one of these for each axis. */
- /* */
+ /**************************************************************************
+ *
+ * @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_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_ItemVarDataRec_
+ {
+ FT_UInt itemCount; /* number of delta sets per item */
+ FT_UInt regionIdxCount; /* number of region indices in this data */
+ FT_UInt* regionIndices; /* array of `regionCount' indices; */
+ /* these index `varRegionList' */
+ FT_Short* deltaSet; /* array of `itemCount' deltas */
+ /* use `innerIndex' for this array */
+
+ } GX_ItemVarDataRec, *GX_ItemVarData;
+
+
+ /* contribution of one axis to a region */
+ typedef struct GX_AxisCoordsRec_
+ {
+ FT_Fixed startCoord;
+ FT_Fixed peakCoord; /* zero means no effect (factor = 1) */
+ FT_Fixed endCoord;
+
+ } GX_AxisCoordsRec, *GX_AxisCoords;
+
+
+ typedef struct GX_VarRegionRec_
+ {
+ GX_AxisCoords axisList; /* array of axisCount records */
+
+ } GX_VarRegionRec, *GX_VarRegion;
+
+
+ /* item variation store */
+ typedef struct GX_ItemVarStoreRec_
+ {
+ FT_UInt dataCount;
+ GX_ItemVarData varData; /* array of dataCount records; */
+ /* use `outerIndex' for this array */
+ FT_UShort axisCount;
+ FT_UInt regionCount; /* total number of regions defined */
+ GX_VarRegion varRegionList;
+
+ } GX_ItemVarStoreRec, *GX_ItemVarStore;
+
+
+ typedef struct GX_DeltaSetIdxMapRec_
+ {
+ FT_UInt mapCount;
+ FT_UInt* outerIndex; /* indices to item var data */
+ FT_UInt* innerIndex; /* indices to delta set */
+
+ } GX_DeltaSetIdxMapRec, *GX_DeltaSetIdxMap;
+
+
+ /**************************************************************************
+ *
+ * @Struct:
+ * GX_HVVarTableRec
+ *
+ * @Description:
+ * Data from either the `HVAR' or `VVAR' table.
+ */
+ typedef struct GX_HVVarTableRec_
+ {
+ GX_ItemVarStoreRec itemStore; /* Item Variation Store */
+ GX_DeltaSetIdxMapRec widthMap; /* Advance Width Mapping */
+
+#if 0
+ GX_DeltaSetIdxMapRec lsbMap; /* not implemented */
+ GX_DeltaSetIdxMapRec rsbMap; /* not implemented */
+
+ GX_DeltaSetIdxMapRec tsbMap; /* not implemented */
+ GX_DeltaSetIdxMapRec bsbMap; /* not implemented */
+ GX_DeltaSetIdxMapRec vorgMap; /* not implemented */
+#endif
+
+ } GX_HVVarTableRec, *GX_HVVarTable;
+
+
+#define MVAR_TAG_GASP_0 FT_MAKE_TAG( 'g', 's', 'p', '0' )
+#define MVAR_TAG_GASP_1 FT_MAKE_TAG( 'g', 's', 'p', '1' )
+#define MVAR_TAG_GASP_2 FT_MAKE_TAG( 'g', 's', 'p', '2' )
+#define MVAR_TAG_GASP_3 FT_MAKE_TAG( 'g', 's', 'p', '3' )
+#define MVAR_TAG_GASP_4 FT_MAKE_TAG( 'g', 's', 'p', '4' )
+#define MVAR_TAG_GASP_5 FT_MAKE_TAG( 'g', 's', 'p', '5' )
+#define MVAR_TAG_GASP_6 FT_MAKE_TAG( 'g', 's', 'p', '6' )
+#define MVAR_TAG_GASP_7 FT_MAKE_TAG( 'g', 's', 'p', '7' )
+#define MVAR_TAG_GASP_8 FT_MAKE_TAG( 'g', 's', 'p', '8' )
+#define MVAR_TAG_GASP_9 FT_MAKE_TAG( 'g', 's', 'p', '9' )
+
+#define MVAR_TAG_CPHT FT_MAKE_TAG( 'c', 'p', 'h', 't' )
+#define MVAR_TAG_HASC FT_MAKE_TAG( 'h', 'a', 's', 'c' )
+#define MVAR_TAG_HCLA FT_MAKE_TAG( 'h', 'c', 'l', 'a' )
+#define MVAR_TAG_HCLD FT_MAKE_TAG( 'h', 'c', 'l', 'd' )
+#define MVAR_TAG_HCOF FT_MAKE_TAG( 'h', 'c', 'o', 'f' )
+#define MVAR_TAG_HCRN FT_MAKE_TAG( 'h', 'c', 'r', 'n' )
+#define MVAR_TAG_HCRS FT_MAKE_TAG( 'h', 'c', 'r', 's' )
+#define MVAR_TAG_HDSC FT_MAKE_TAG( 'h', 'd', 's', 'c' )
+#define MVAR_TAG_HLGP FT_MAKE_TAG( 'h', 'l', 'g', 'p' )
+#define MVAR_TAG_SBXO FT_MAKE_TAG( 's', 'b', 'x', 'o' )
+#define MVAR_TAG_SBXS FT_MAKE_TAG( 's', 'b', 'x', 's' )
+#define MVAR_TAG_SBYO FT_MAKE_TAG( 's', 'b', 'y', 'o' )
+#define MVAR_TAG_SBYS FT_MAKE_TAG( 's', 'b', 'y', 's' )
+#define MVAR_TAG_SPXO FT_MAKE_TAG( 's', 'p', 'x', 'o' )
+#define MVAR_TAG_SPXS FT_MAKE_TAG( 's', 'p', 'x', 's' )
+#define MVAR_TAG_SPYO FT_MAKE_TAG( 's', 'p', 'y', 'o' )
+#define MVAR_TAG_SPYS FT_MAKE_TAG( 's', 'p', 'y', 's' )
+#define MVAR_TAG_STRO FT_MAKE_TAG( 's', 't', 'r', 'o' )
+#define MVAR_TAG_STRS FT_MAKE_TAG( 's', 't', 'r', 's' )
+#define MVAR_TAG_UNDO FT_MAKE_TAG( 'u', 'n', 'd', 'o' )
+#define MVAR_TAG_UNDS FT_MAKE_TAG( 'u', 'n', 'd', 's' )
+#define MVAR_TAG_VASC FT_MAKE_TAG( 'v', 'a', 's', 'c' )
+#define MVAR_TAG_VCOF FT_MAKE_TAG( 'v', 'c', 'o', 'f' )
+#define MVAR_TAG_VCRN FT_MAKE_TAG( 'v', 'c', 'r', 'n' )
+#define MVAR_TAG_VCRS FT_MAKE_TAG( 'v', 'c', 'r', 's' )
+#define MVAR_TAG_VDSC FT_MAKE_TAG( 'v', 'd', 's', 'c' )
+#define MVAR_TAG_VLGP FT_MAKE_TAG( 'v', 'l', 'g', 'p' )
+#define MVAR_TAG_XHGT FT_MAKE_TAG( 'x', 'h', 'g', 't' )
+
+
+ typedef struct GX_ValueRec_
+ {
+ FT_ULong tag;
+ FT_UShort outerIndex;
+ FT_UShort innerIndex;
+
+ FT_Short unmodified; /* values are either FT_Short or FT_UShort */
+
+ } GX_ValueRec, *GX_Value;
+
+
+ /**************************************************************************
+ *
+ * @Struct:
+ * GX_MVarTableRec
+ *
+ * @Description:
+ * Data from the `MVAR' table.
+ */
+ typedef struct GX_MVarTableRec_
+ {
+ FT_UShort valueCount;
+
+ GX_ItemVarStoreRec itemStore; /* Item Variation Store */
+ GX_Value values; /* Value Records */
+
+ } GX_MVarTableRec, *GX_MVarTable;
+
+
+ /**************************************************************************
+ *
+ * @Struct:
+ * GX_BlendRec
+ *
+ * @Description:
+ * Data for interpolating a font from a distortable font specified
+ * by the GX *var tables ([fgcahvm]var).
+ *
+ * @Fields:
+ * num_axis ::
+ * The number of axes along which interpolation may happen.
+ *
+ * coords ::
+ * An array of design coordinates (in user space) indicating the
+ * contribution along each axis to the final interpolated font.
+ * `normalizedcoords' holds the same values.
+ *
+ * normalizedcoords ::
+ * An array of normalized values (between [-1,1]) indicating the
+ * contribution along each axis to the final interpolated font.
+ * `coords' holds the same values.
+ *
+ * mmvar ::
+ * Data from the `fvar' table.
+ *
+ * mmvar_len ::
+ * The length of the `mmvar' structure.
+ *
+ * normalized_stylecoords ::
+ * A two-dimensional array that holds the named instance data from
+ * `mmvar' as normalized values.
+ *
+ * avar_loaded ::
+ * A Boolean; if set, FreeType tried to load (and parse) the `avar'
+ * table.
+ *
+ * avar_segment ::
+ * Data from the `avar' table.
+ *
+ * hvar_loaded ::
+ * A Boolean; if set, FreeType tried to load (and parse) the `hvar'
+ * table.
+ *
+ * hvar_checked ::
+ * A Boolean; if set, FreeType successfully loaded and parsed the
+ * `hvar' table.
+ *
+ * hvar_error ::
+ * If loading and parsing of the `hvar' table failed, this field
+ * holds the corresponding error code.
+ *
+ * hvar_table ::
+ * Data from the `hvar' table.
+ *
+ * vvar_loaded ::
+ * A Boolean; if set, FreeType tried to load (and parse) the `vvar'
+ * table.
+ *
+ * vvar_checked ::
+ * A Boolean; if set, FreeType successfully loaded and parsed the
+ * `vvar' table.
+ *
+ * vvar_error ::
+ * If loading and parsing of the `vvar' table failed, this field
+ * holds the corresponding error code.
+ *
+ * vvar_table ::
+ * Data from the `vvar' table.
+ *
+ * mvar_table ::
+ * Data from the `mvar' table.
+ *
+ * tuplecount ::
+ * The number of shared tuples in the `gvar' table.
+ *
+ * tuplecoords ::
+ * A two-dimensional array that holds the shared tuple coordinates
+ * in the `gvar' table.
+ *
+ * gv_glyphcnt ::
+ * The number of glyphs handled in the `gvar' table.
+ *
+ * glyphoffsets ::
+ * Offsets into the glyph variation data array.
+ *
+ * gvar_size ::
+ * The size of the `gvar' table.
+ */
typedef struct GX_BlendRec_
{
FT_UInt num_axis;
+ FT_Fixed* coords;
FT_Fixed* normalizedcoords;
FT_MM_Var* mmvar;
FT_Offset mmvar_len;
- FT_Bool avar_checked;
- GX_AVarSegment avar_segment;
+ FT_Fixed* normalized_stylecoords;
+ /* normalized_stylecoords[num_namedstyles][num_axis] */
+
+ FT_Bool avar_loaded;
+ GX_AVarSegment avar_segment; /* avar_segment[num_axis] */
+
+ FT_Bool hvar_loaded;
+ FT_Bool hvar_checked;
+ FT_Error hvar_error;
+ GX_HVVarTable hvar_table;
+
+ FT_Bool vvar_loaded;
+ FT_Bool vvar_checked;
+ FT_Error vvar_error;
+ GX_HVVarTable vvar_table;
+
+ GX_MVarTable mvar_table;
- FT_UInt tuplecount; /* shared tuples in `gvar' */
- FT_Fixed* tuplecoords; /* tuplecoords[tuplecount][num_axis] */
+ FT_UInt tuplecount;
+ FT_Fixed* tuplecoords; /* tuplecoords[tuplecount][num_axis] */
FT_UInt gv_glyphcnt;
- FT_ULong* glyphoffsets;
+ FT_ULong* glyphoffsets; /* glyphoffsets[gv_glyphcnt + 1] */
FT_ULong gvar_size;
} GX_BlendRec;
- /*************************************************************************/
- /* */
- /* <enum> */
- /* GX_TupleCountFlags */
- /* */
- /* <Description> */
- /* Flags used within the `TupleCount' field of the `gvar' table. */
- /* */
+ /**************************************************************************
+ *
+ * @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_TupleCountFlags;
- /*************************************************************************/
- /* */
- /* <enum> */
- /* GX_TupleIndexFlags */
- /* */
- /* <Description> */
- /* Flags used within the `TupleIndex' field of the `gvar' and `cvar' */
- /* tables. */
- /* */
+ /**************************************************************************
+ *
+ * @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,
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 );
TT_Get_MM_Var( TT_Face face,
FT_MM_Var* *master );
+ FT_LOCAL( FT_Error )
+ TT_Get_Var_Design( TT_Face face,
+ FT_UInt num_coords,
+ FT_Fixed* coords );
+
+ FT_LOCAL( FT_Error )
+ TT_Set_Named_Instance( TT_Face face,
+ FT_UInt instance_index );
FT_LOCAL( FT_Error )
tt_face_vary_cvt( TT_Face face,
TT_Vary_Apply_Glyph_Deltas( TT_Face face,
FT_UInt glyph_index,
FT_Outline* outline,
+ FT_Vector* unrounded,
FT_UInt n_points );
+ FT_LOCAL( FT_Error )
+ tt_hadvance_adjust( TT_Face face,
+ FT_UInt gindex,
+ FT_Int *adelta );
+
+ FT_LOCAL( FT_Error )
+ tt_vadvance_adjust( TT_Face face,
+ FT_UInt gindex,
+ FT_Int *adelta );
FT_LOCAL( void )
- tt_done_blend( FT_Memory memory,
- GX_Blend blend );
+ tt_apply_mvar( TT_Face face );
+
+ FT_LOCAL( FT_Error )
+ tt_get_var_blend( TT_Face face,
+ FT_UInt *num_coords,
+ FT_Fixed* *coords,
+ FT_Fixed* *normalizedcoords,
+ FT_MM_Var* *mm_var );
+
+ FT_LOCAL( void )
+ tt_done_blend( TT_Face face );
+
+#endif /* TT_CONFIG_OPTION_GX_VAR_SUPPORT */
FT_END_HEADER
projects / platform / upstream / freetype2.git / blobdiff