/***************************************************************************//*                                                                         *//*  cffgload.h                                                             *//*                                                                         *//*    OpenType Glyph Loader (specification).                               *//*                                                                         *//*  Copyright 1996-2001, 2002 by                                           *//*  David Turner, Robert Wilhelm, and Werner Lemberg.                      *//*                                                                         *//*  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 __CFFGLOAD_H__#define __CFFGLOAD_H__#include <ft2build.h>#include FT_FREETYPE_H#include "cffobjs.h"FT_BEGIN_HEADER#define CFF_MAX_OPERANDS     48#define CFF_MAX_SUBRS_CALLS  32  /*************************************************************************/  /*                                                                       */  /* <Structure>                                                           */  /*    CFF_Builder                                                        */  /*                                                                       */  /* <Description>                                                         */  /*     A structure used during glyph loading to store its outline.       */  /*                                                                       */  /* <Fields>                                                              */  /*    memory        :: The current memory object.                        */  /*                                                                       */  /*    face          :: The current face object.                          */  /*                                                                       */  /*    glyph         :: The current glyph slot.                           */  /*                                                                       */  /*    loader        :: The current glyph loader.                         */  /*                                                                       */  /*    base          :: The base glyph outline.                           */  /*                                                                       */  /*    current       :: The current glyph outline.                        */  /*                                                                       */  /*    last          :: The last point position.                          */  /*                                                                       */  /*    scale_x       :: The horizontal scale (FUnits to sub-pixels).      */  /*                                                                       */  /*    scale_y       :: The vertical scale (FUnits to sub-pixels).        */  /*                                                                       */  /*    pos_x         :: The horizontal translation (if composite glyph).  */  /*                                                                       */  /*    pos_y         :: The vertical translation (if composite glyph).    */  /*                                                                       */  /*    left_bearing  :: The left side bearing point.                      */  /*                                                                       */  /*    advance       :: The horizontal advance vector.                    */  /*                                                                       */  /*    bbox          :: Unused.                                           */  /*                                                                       */  /*    path_begun    :: A flag which indicates that a new path has begun. */  /*                                                                       */  /*    load_points   :: If this flag is not set, no points are loaded.    */  /*                                                                       */  /*    no_recurse    :: Set but not used.                                 */  /*                                                                       */  /*    error         :: An error code that is only used to report memory  */  /*                     allocation problems.                              */  /*                                                                       */  /*    metrics_only  :: A boolean indicating that we only want to compute */  /*                     the metrics of a given glyph, not load all of its */  /*                     points.                                           */  /*                                                                       */  /*    hints_funcs   :: Auxiliary pointer for hinting.                    */  /*                                                                       */  /*    hints_globals :: Auxiliary pointer for hinting.                    */  /*                                                                       */  typedef struct  CFF_Builder_  {    FT_Memory       memory;    TT_Face         face;    CFF_GlyphSlot   glyph;    FT_GlyphLoader  loader;    FT_Outline*     base;    FT_Outline*     current;    FT_Vector       last;    FT_Fixed        scale_x;    FT_Fixed        scale_y;    FT_Pos          pos_x;    FT_Pos          pos_y;    FT_Vector       left_bearing;    FT_Vector       advance;    FT_BBox         bbox;          /* bounding box */    FT_Bool         path_begun;    FT_Bool         load_points;    FT_Bool         no_recurse;    FT_Error        error;         /* only used for memory errors */    FT_Bool         metrics_only;    void*           hints_funcs;    /* hinter-specific */    void*           hints_globals;  /* hinter-specific */  } CFF_Builder;  /* execution context charstring zone */  typedef struct  CFF_Decoder_Zone_  {    FT_Byte*  base;    FT_Byte*  limit;    FT_Byte*  cursor;  } CFF_Decoder_Zone;  typedef struct  CFF_Decoder_  {    CFF_Builder        builder;    CFF_Font           cff;    FT_Fixed           stack[CFF_MAX_OPERANDS + 1];    FT_Fixed*          top;    CFF_Decoder_Zone   zones[CFF_MAX_SUBRS_CALLS + 1];    CFF_Decoder_Zone*  zone;    FT_Int             flex_state;    FT_Int             num_flex_vectors;    FT_Vector          flex_vectors[7];    FT_Pos             glyph_width;    FT_Pos             nominal_width;    FT_Bool            read_width;    FT_Int             num_hints;    FT_Fixed*          buildchar;    FT_Int             len_buildchar;    FT_UInt            num_locals;    FT_UInt            num_globals;    FT_Int             locals_bias;    FT_Int             globals_bias;    FT_Byte**          locals;    FT_Byte**          globals;    FT_Byte**          glyph_names;   /* for pure CFF fonts only  */    FT_UInt            num_glyphs;    /* number of glyphs in font */  } CFF_Decoder;  FT_LOCAL( void )  CFF_Init_Decoder( CFF_Decoder*   decoder,                    TT_Face        face,                    CFF_Size       size,                    CFF_GlyphSlot  slot,                    FT_Bool        hinting );  FT_LOCAL( void )  CFF_Prepare_Decoder( CFF_Decoder*  decoder,                       FT_UInt       glyph_index );#if 0  /* unused until we support pure CFF fonts */  /* Compute the maximum advance width of a font through quick parsing */  FT_LOCAL( FT_Error )  CFF_Compute_Max_Advance( TT_Face  face,                           FT_Int*  max_advance );#endif /* 0 */  FT_LOCAL( FT_Error )  CFF_Parse_CharStrings( CFF_Decoder*  decoder,                         FT_Byte*      charstring_base,                         FT_Int        charstring_len );  FT_LOCAL( FT_Error )  CFF_Load_Glyph( CFF_GlyphSlot  glyph,                  CFF_Size       size,                  FT_Int         glyph_index,                  FT_Int         load_flags );FT_END_HEADER#endif /* __CFFGLOAD_H__ *//* END */