Merge pull request #12 from dboddie/update-freetype

Update FreeType to the latest code

1 files changed, 232 insertions, 72 deletions

diff --git a/include/freetype/internal/cfftypes.h b/include/freetype/internal/cfftypes.h
index 82e1e91b..ef2e8e75 100644
--- a/include/freetype/internal/cfftypes.h
+++ b/include/freetype/internal/cfftypes.h
@@ -1,61 +1,79 @@
-/***************************************************************************/
-/*                                                                         */
-/*  cfftypes.h                                                             */
-/*                                                                         */
-/*    Basic OpenType/CFF type definitions and interface (specification     */
-/*    only).                                                               */
-/*                                                                         */
-/*  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 __CFFTYPES_H__
-#define __CFFTYPES_H__
-
-
-#include <ft2build.h>
-#include FT_FREETYPE_H
+/****************************************************************************
+ *
+ * cfftypes.h
+ *
+ *   Basic OpenType/CFF type definitions and interface (specification
+ *   only).
+ *
+ * Copyright (C) 1996-2024 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 CFFTYPES_H_
+#define CFFTYPES_H_
+
+
+#include <freetype/freetype.h>
+#include <freetype/t1tables.h>
+#include <freetype/internal/ftserv.h>
+#include <freetype/internal/services/svpscmap.h>
+#include <freetype/internal/pshints.h>
+#include <freetype/internal/t1types.h>
 
 
 FT_BEGIN_HEADER
 
 
-  /*************************************************************************/
-  /*                                                                       */
-  /* <Struct>                                                              */
-  /*    CFF_IndexRec                                                       */
-  /*                                                                       */
-  /* <Description>                                                         */
-  /*    A structure used to model a CFF Index table.                       */
-  /*                                                                       */
-  /* <Fields>                                                              */
-  /*    stream      :: The source input stream.                            */
-  /*                                                                       */
-  /*    count       :: The number of elements in the index.                */
-  /*                                                                       */
-  /*    off_size    :: The size in bytes of object offsets in index.       */
-  /*                                                                       */
-  /*    data_offset :: The position of first data byte in the index's      */
-  /*                   bytes.                                              */
-  /*                                                                       */
-  /*    offsets     :: A table of element offsets in the index.            */
-  /*                                                                       */
-  /*    bytes       :: If the index is loaded in memory, its bytes.        */
-  /*                                                                       */
+  /**************************************************************************
+   *
+   * @struct:
+   *   CFF_IndexRec
+   *
+   * @description:
+   *   A structure used to model a CFF Index table.
+   *
+   * @fields:
+   *   stream ::
+   *     The source input stream.
+   *
+   *   start ::
+   *     The position of the first index byte in the input stream.
+   *
+   *   count ::
+   *     The number of elements in the index.
+   *
+   *   off_size ::
+   *     The size in bytes of object offsets in index.
+   *
+   *   data_offset ::
+   *     The position of first data byte in the index's bytes.
+   *
+   *   data_size ::
+   *     The size of the data table in this index.
+   *
+   *   offsets ::
+   *     A table of element offsets in the index.  Must be loaded explicitly.
+   *
+   *   bytes ::
+   *     If the index is loaded in memory, its bytes.
+   */
   typedef struct  CFF_IndexRec_
   {
     FT_Stream  stream;
+    FT_ULong   start;
+    FT_UInt    hdr_size;
     FT_UInt    count;
     FT_Byte    off_size;
     FT_ULong   data_offset;
+    FT_ULong   data_size;
 
     FT_ULong*  offsets;
     FT_Byte*   bytes;
@@ -82,10 +100,87 @@ FT_BEGIN_HEADER
     FT_ULong    offset;
 
     FT_UShort*  sids;
+    FT_UShort*  cids;       /* the inverse mapping of `sids'; only needed */
+                            /* for CID-keyed fonts                        */
+    FT_UInt     max_cid;
+    FT_UInt     num_glyphs;
 
   } CFF_CharsetRec, *CFF_Charset;
 
 
+  /* cf. similar fields in file `ttgxvar.h' from the `truetype' module */
+
+  typedef struct  CFF_VarData_
+  {
+#if 0
+    FT_UInt  itemCount;       /* not used; always zero */
+    FT_UInt  shortDeltaCount; /* not used; always zero */
+#endif
+
+    FT_UInt   regionIdxCount; /* number of region indexes           */
+    FT_UInt*  regionIndices;  /* array of `regionIdxCount' indices; */
+                              /* these index `varRegionList'        */
+  } CFF_VarData;
+
+
+  /* contribution of one axis to a region */
+  typedef struct  CFF_AxisCoords_
+  {
+    FT_Fixed  startCoord;
+    FT_Fixed  peakCoord;      /* zero peak means no effect (factor = 1) */
+    FT_Fixed  endCoord;
+
+  } CFF_AxisCoords;
+
+
+  typedef struct  CFF_VarRegion_
+  {
+    CFF_AxisCoords*  axisList;      /* array of axisCount records */
+
+  } CFF_VarRegion;
+
+
+  typedef struct  CFF_VStoreRec_
+  {
+    FT_UInt         dataCount;
+    CFF_VarData*    varData;        /* array of dataCount records      */
+                                    /* vsindex indexes this array      */
+    FT_UShort       axisCount;
+    FT_UInt         regionCount;    /* total number of regions defined */
+    CFF_VarRegion*  varRegionList;
+
+  } CFF_VStoreRec, *CFF_VStore;
+
+
+  /* forward reference */
+  typedef struct CFF_FontRec_*  CFF_Font;
+
+
+  /* This object manages one cached blend vector.                  */
+  /*                                                               */
+  /* There is a BlendRec for Private DICT parsing in each subfont  */
+  /* and a BlendRec for charstrings in CF2_Font instance data.     */
+  /* A cached BV may be used across DICTs or Charstrings if inputs */
+  /* have not changed.                                             */
+  /*                                                               */
+  /* `usedBV' is reset at the start of each parse or charstring.   */
+  /* vsindex cannot be changed after a BV is used.                 */
+  /*                                                               */
+  /* Note: NDV is long (32/64 bit), while BV is 16.16 (FT_Int32).  */
+  typedef struct  CFF_BlendRec_
+  {
+    FT_Bool    builtBV;        /* blendV has been built           */
+    FT_Bool    usedBV;         /* blendV has been used            */
+    CFF_Font   font;           /* top level font struct           */
+    FT_UInt    lastVsindex;    /* last vsindex used               */
+    FT_UInt    lenNDV;         /* normDV length (aka numAxes)     */
+    FT_Fixed*  lastNDV;        /* last NDV used                   */
+    FT_UInt    lenBV;          /* BlendV length (aka numMasters)  */
+    FT_Int32*  BV;             /* current blendV (per DICT/glyph) */
+
+  } CFF_BlendRec, *CFF_Blend;
+
+
   typedef struct  CFF_FontRecDictRec_
   {
     FT_UInt    version;
@@ -96,12 +191,13 @@ FT_BEGIN_HEADER
     FT_UInt    weight;
     FT_Bool    is_fixed_pitch;
     FT_Fixed   italic_angle;
-    FT_Pos     underline_position;
-    FT_Pos     underline_thickness;
+    FT_Fixed   underline_position;
+    FT_Fixed   underline_thickness;
     FT_Int     paint_type;
     FT_Int     charstring_type;
     FT_Matrix  font_matrix;
-    FT_UShort  units_per_em;
+    FT_Bool    has_font_matrix;
+    FT_ULong   units_per_em;  /* temporarily used as scaling value also */
     FT_Vector  font_offset;
     FT_ULong   unique_id;
     FT_BBox    font_bbox;
@@ -113,26 +209,38 @@ FT_BEGIN_HEADER
     FT_ULong   private_size;
     FT_Long    synthetic_base;
     FT_UInt    embedded_postscript;
-    FT_UInt    base_font_name;
-    FT_UInt    postscript;
 
     /* these should only be used for the top-level font dictionary */
     FT_UInt    cid_registry;
     FT_UInt    cid_ordering;
-    FT_ULong   cid_supplement;
+    FT_Long    cid_supplement;
 
     FT_Long    cid_font_version;
     FT_Long    cid_font_revision;
     FT_Long    cid_font_type;
-    FT_Long    cid_count;
+    FT_ULong   cid_count;
     FT_ULong   cid_uid_base;
     FT_ULong   cid_fd_array_offset;
     FT_ULong   cid_fd_select_offset;
     FT_UInt    cid_font_name;
 
+    /* the next fields come from the data of the deprecated          */
+    /* `MultipleMaster' operator; they are needed to parse the (also */
+    /* deprecated) `blend' operator in Type 2 charstrings            */
+    FT_UShort  num_designs;
+    FT_UShort  num_axes;
+
+    /* fields for CFF2 */
+    FT_ULong   vstore_offset;
+    FT_UInt    maxstack;
+
   } CFF_FontRecDictRec, *CFF_FontRecDict;
 
 
+  /* forward reference */
+  typedef struct CFF_SubFontRec_*  CFF_SubFont;
+
+
   typedef struct  CFF_PrivateRec_
   {
     FT_Byte   num_blue_values;
@@ -140,10 +248,10 @@ FT_BEGIN_HEADER
     FT_Byte   num_family_blues;
     FT_Byte   num_family_other_blues;
 
-    FT_Pos    blue_values[14];
-    FT_Pos    other_blues[10];
-    FT_Pos    family_blues[14];
-    FT_Pos    family_other_blues[10];
+    FT_Fixed  blue_values[14];
+    FT_Fixed  other_blues[10];
+    FT_Fixed  family_blues[14];
+    FT_Fixed  family_other_blues[10];
 
     FT_Fixed  blue_scale;
     FT_Pos    blue_shift;
@@ -165,6 +273,10 @@ FT_BEGIN_HEADER
     FT_Pos    default_width;
     FT_Pos    nominal_width;
 
+    /* fields for CFF2 */
+    FT_UInt      vsindex;
+    CFF_SubFont  subfont;
+
   } CFF_PrivateRec, *CFF_Private;
 
 
@@ -192,33 +304,55 @@ FT_BEGIN_HEADER
     CFF_FontRecDictRec  font_dict;
     CFF_PrivateRec      private_dict;
 
-    CFF_IndexRec        local_subrs_index;
-    FT_UInt             num_local_subrs;
-    FT_Byte**           local_subrs;
+    /* fields for CFF2 */
+    CFF_BlendRec  blend;      /* current blend vector       */
+    FT_UInt       lenNDV;     /* current length NDV or zero */
+    FT_Fixed*     NDV;        /* ptr to current NDV or NULL */
+
+    /* `blend_stack' is a writable buffer to hold blend results.          */
+    /* This buffer is to the side of the normal cff parser stack;         */
+    /* `cff_parse_blend' and `cff_blend_doBlend' push blend results here. */
+    /* The normal stack then points to these values instead of the DICT   */
+    /* because all other operators in Private DICT clear the stack.       */
+    /* `blend_stack' could be cleared at each operator other than blend.  */
+    /* Blended values are stored as 5-byte fixed-point values.            */
+
+    FT_Byte*  blend_stack;    /* base of stack allocation     */
+    FT_Byte*  blend_top;      /* first empty slot             */
+    FT_UInt   blend_used;     /* number of bytes in use       */
+    FT_UInt   blend_alloc;    /* number of bytes allocated    */
+
+    CFF_IndexRec  local_subrs_index;
+    FT_Byte**     local_subrs; /* array of pointers           */
+                               /* into Local Subrs INDEX data */
 
-  } CFF_SubFontRec, *CFF_SubFont;
+    FT_UInt32  random;
 
+  } CFF_SubFontRec;
 
-  /* maximum number of sub-fonts in a CID-keyed file */
-#define CFF_MAX_CID_FONTS  16
+
+#define CFF_MAX_CID_FONTS  256
 
 
   typedef struct  CFF_FontRec_
   {
+    FT_Library       library;
     FT_Stream        stream;
-    FT_Memory        memory;
+    FT_Memory        memory;        /* TODO: take this from stream->memory? */
+    FT_ULong         base_offset;   /* offset to start of CFF */
     FT_UInt          num_faces;
     FT_UInt          num_glyphs;
 
     FT_Byte          version_major;
     FT_Byte          version_minor;
     FT_Byte          header_size;
-    FT_Byte          absolute_offsize;
 
+    FT_UInt          top_dict_length;   /* cff2 only */
+
+    FT_Bool          cff2;
 
     CFF_IndexRec     name_index;
     CFF_IndexRec     top_dict_index;
-    CFF_IndexRec     string_index;
     CFF_IndexRec     global_subrs_index;
 
     CFF_EncodingRec  encoding;
@@ -230,9 +364,16 @@ FT_BEGIN_HEADER
     CFF_IndexRec     local_subrs_index;
 
     FT_String*       font_name;
-    FT_UInt          num_global_subrs;
+
+    /* array of pointers into Global Subrs INDEX data */
     FT_Byte**        global_subrs;
 
+    /* array of pointers into String INDEX data stored at string_pool */
+    FT_UInt          num_strings;
+    FT_Byte**        strings;
+    FT_Byte*         string_pool;
+    FT_ULong         string_pool_size;
+
     CFF_SubFontRec   top_font;
     FT_UInt          num_subfonts;
     CFF_SubFont      subfonts[CFF_MAX_CID_FONTS];
@@ -240,17 +381,36 @@ FT_BEGIN_HEADER
     CFF_FDSelectRec  fd_select;
 
     /* interface to PostScript hinter */
-    void*            pshinter;
+    PSHinter_Service  pshinter;
 
     /* interface to Postscript Names service */
-    void*            psnames;
+    FT_Service_PsCMaps  psnames;
+
+    /* interface to CFFLoad service */
+    const void*  cffload;
+
+    /* since version 2.3.0 */
+    PS_FontInfoRec*  font_info;   /* font info dictionary */
+
+    /* since version 2.3.6 */
+    FT_String*       registry;
+    FT_String*       ordering;
+
+    /* since version 2.4.12 */
+    FT_Generic       cf2_instance;
+
+    /* since version 2.7.1 */
+    CFF_VStoreRec    vstore;        /* parsed vstore structure */
+
+    /* since version 2.9 */
+    PS_FontExtraRec*  font_extra;
 
-  } CFF_FontRec, *CFF_Font;
+  } CFF_FontRec;
 
 
 FT_END_HEADER
 
-#endif /* __CFFTYPES_H__ */
+#endif /* CFFTYPES_H_ */
 
 
 /* END */