#ifndef TTGXVAR_H_

#define TTGXVAR_H_

#include <ft2build.h>

#include "ttobjs.h"

FT_BEGIN_HEADER

#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT

  typedef struct  GX_AVarCorrespondenceRec_

  {

    FT_Fixed  fromCoord;

    FT_Fixed  toCoord;

  } GX_AVarCorrespondenceRec_, *GX_AVarCorrespondence;

  typedef struct  GX_AVarSegmentRec_

  {

    FT_UShort              pairCount;

    GX_AVarCorrespondence  correspondence; /* array with pairCount entries */

  } GX_AVarSegmentRec, *GX_AVarSegment;

  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;

  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;

  typedef struct  GX_MVarTableRec_

  {

    FT_UShort  valueCount;

    GX_ItemVarStoreRec  itemStore;        /* Item Variation Store  */

    GX_Value            values;           /* Value Records         */

  } GX_MVarTableRec, *GX_MVarTable;

  typedef struct  GX_BlendRec_

  {

    FT_UInt         num_axis;

    FT_Fixed*       coords;

    FT_Fixed*       normalizedcoords;

    FT_MM_Var*      mmvar;

    FT_Offset       mmvar_len;

    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;

    FT_Fixed*       tuplecoords;      /* tuplecoords[tuplecount][num_axis] */

    FT_UInt         gv_glyphcnt;

    FT_ULong*       glyphoffsets;         /* glyphoffsets[gv_glyphcnt + 1] */

    FT_ULong        gvar_size;

  } GX_BlendRec;

  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;

  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_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 );

  FT_LOCAL( FT_Error )

  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,

                    FT_Stream  stream );

  FT_LOCAL( FT_Error )

  TT_Vary_Apply_Glyph_Deltas( TT_Face      face,

                              FT_UInt      glyph_index,

                              FT_Outline*  outline,

                              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_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

#endif /* TTGXVAR_H_ */

/* END */