Update freetype to latest version of ASOP.

src/cff/cf2hints.h

Index: src/cff/cf2hints.h
diff --git a/src/cff/cf2hints.h b/src/cff/cf2hints.h
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+/***************************************************************************/
+/*                                                                         */
+/*  cf2hints.h                                                             */
+/*                                                                         */
+/*    Adobe's code for handling CFF hints (body).                          */
+/*                                                                         */
+/*  Copyright 2007-2013 Adobe Systems Incorporated.                        */
+/*                                                                         */
+/*  This software, and all works of authorship, whether in source or       */
+/*  object code form as indicated by the copyright notice(s) included      */
+/*  herein (collectively, the "Work") is made available, and may only be   */
+/*  used, modified, and distributed under the FreeType Project License,    */
+/*  LICENSE.TXT.  Additionally, subject to the terms and conditions of the */
+/*  FreeType Project License, each contributor to the Work hereby grants   */
+/*  to any individual or legal entity exercising permissions granted by    */
+/*  the FreeType Project License and this section (hereafter, "You" or     */
+/*  "Your") a perpetual, worldwide, non-exclusive, no-charge,              */
+/*  royalty-free, irrevocable (except as stated in this section) patent    */
+/*  license to make, have made, use, offer to sell, sell, import, and      */
+/*  otherwise transfer the Work, where such license applies only to those  */
+/*  patent claims licensable by such contributor that are necessarily      */
+/*  infringed by their contribution(s) alone or by combination of their    */
+/*  contribution(s) with the Work to which such contribution(s) was        */
+/*  submitted.  If You institute patent litigation against any entity      */
+/*  (including a cross-claim or counterclaim in a lawsuit) alleging that   */
+/*  the Work or a contribution incorporated within the Work constitutes    */
+/*  direct or contributory patent infringement, then any patent licenses   */
+/*  granted to You under this License for that Work shall terminate as of  */
+/*  the date such litigation is filed.                                     */
+/*                                                                         */
+/*  By using, modifying, or distributing the Work you indicate that you    */
+/*  have read and understood the terms and conditions of the               */
+/*  FreeType Project License as well as those provided in this section,    */
+/*  and you accept them fully.                                             */
+/*                                                                         */
+/***************************************************************************/
+
+
+#ifndef __CF2HINTS_H__
+#define __CF2HINTS_H__
+
+
+FT_BEGIN_HEADER
+
+
+  enum
+  {
+    CF2_MAX_HINTS = 96    /* maximum # of hints */
+  };
+
+
+  /*
+   * A HintMask object stores a bit mask that specifies which hints in the
+   * charstring are active at a given time.  Hints in CFF must be declared
+   * at the start, before any drawing operators, with horizontal hints
+   * preceding vertical hints.  The HintMask is ordered the same way, with
+   * horizontal hints immediately followed by vertical hints.  Clients are
+   * responsible for knowing how many of each type are present.
+   *
+   * The maximum total number of hints is 96, as specified by the CFF
+   * specification.
+   *
+   * A HintMask is built 0 or more times while interpreting a charstring, by
+   * the HintMask operator.  There is only one HintMask, but it is built or
+   * rebuilt each time there is a hint substitution (HintMask operator) in
+   * the charstring.  A default HintMask with all bits set is built if there
+   * has been no HintMask operator prior to the first drawing operator.
+   *
+   */
+
+  typedef struct  CF2_HintMaskRec_
+  {
+    FT_Error*  error;
+
+    FT_Bool  isValid;
+    FT_Bool  isNew;
+
+    size_t  bitCount;
+    size_t  byteCount;
+
+    FT_Byte  mask[( CF2_MAX_HINTS + 7 ) / 8];
+
+  } CF2_HintMaskRec, *CF2_HintMask;
+
+
+  typedef struct  CF2_StemHintRec_
+  {
+    FT_Bool  used;     /* DS positions are valid         */
+
+    CF2_Fixed  min;    /* original character space value */
+    CF2_Fixed  max;
+
+    CF2_Fixed  minDS;  /* DS position after first use    */
+    CF2_Fixed  maxDS;
+
+  } CF2_StemHintRec, *CF2_StemHint;
+
+
+  /*
+   * A HintMap object stores a piecewise linear function for mapping
+   * y-coordinates from character space to device space, providing
+   * appropriate pixel alignment to stem edges.
+   *
+   * The map is implemented as an array of `CF2_Hint' elements, each
+   * representing an edge.  When edges are paired, as from stem hints, the
+   * bottom edge must immediately precede the top edge in the array.
+   * Element character space AND device space positions must both increase
+   * monotonically in the array.  `CF2_Hint' elements are also used as
+   * parameters to `cf2_blues_capture'.
+   *
+   * The `cf2_hintmap_build' method must be called before any drawing
+   * operation (beginning with a Move operator) and at each hint
+   * substitution (HintMask operator).
+   *
+   * The `cf2_hintmap_map' method is called to transform y-coordinates at
+   * each drawing operation (move, line, curve).
+   *
+   */
+
+  /* TODO: make this a CF2_ArrStack and add a deep copy method */
+  enum
+  {
+    CF2_MAX_HINT_EDGES = CF2_MAX_HINTS * 2
+  };
+
+
+  typedef struct  CF2_HintMapRec_
+  {
+    CF2_Font  font;
+
+    /* initial map based on blue zones */
+    struct CF2_HintMapRec_*  initialHintMap;
+
+    /* working storage for 2nd pass adjustHints */
+    CF2_ArrStack  hintMoves;
+
+    FT_Bool  isValid;
+    FT_Bool  hinted;
+
+    CF2_Fixed  scale;
+    CF2_UInt   count;
+
+    /* start search from this index */
+    CF2_UInt  lastIndex;
+
+    CF2_HintRec  edge[CF2_MAX_HINT_EDGES]; /* 192 */
+
+  } CF2_HintMapRec, *CF2_HintMap;
+
+
+  FT_LOCAL( FT_Bool )
+  cf2_hint_isValid( const CF2_Hint  hint );
+  FT_LOCAL( FT_Bool )
+  cf2_hint_isTop( const CF2_Hint  hint );
+  FT_LOCAL( FT_Bool )
+  cf2_hint_isBottom( const CF2_Hint  hint );
+  FT_LOCAL( void )
+  cf2_hint_lock( CF2_Hint  hint );
+
+
+  FT_LOCAL( void )
+  cf2_hintmap_init( CF2_HintMap   hintmap,
+                    CF2_Font      font,
+                    CF2_HintMap   initialMap,
+                    CF2_ArrStack  hintMoves,
+                    CF2_Fixed     scale );
+  FT_LOCAL( void )
+  cf2_hintmap_build( CF2_HintMap   hintmap,
+                     CF2_ArrStack  hStemHintArray,
+                     CF2_ArrStack  vStemHintArray,
+                     CF2_HintMask  hintMask,
+                     CF2_Fixed     hintOrigin,
+                     FT_Bool       initialMap );
+
+
+  /*
+   * GlyphPath is a wrapper for drawing operations that scales the
+   * coordinates according to the render matrix and HintMap.  It also tracks
+   * open paths to control ClosePath and to insert MoveTo for broken fonts.
+   *
+   */
+  typedef struct  CF2_GlyphPathRec_
+  {
+    /* TODO: gather some of these into a hinting context */
+
+    CF2_Font              font;           /* font instance    */
+    CF2_OutlineCallbacks  callbacks;      /* outline consumer */
+
+
+    CF2_HintMapRec  hintMap;        /* current hint map            */
+    CF2_HintMapRec  firstHintMap;   /* saved copy                  */
+    CF2_HintMapRec  initialHintMap; /* based on all captured hints */
+
+    CF2_ArrStackRec  hintMoves;  /* list of hint moves for 2nd pass */
+
+    CF2_Fixed  scaleX;         /* matrix a */
+    CF2_Fixed  scaleC;         /* matrix c */
+    CF2_Fixed  scaleY;         /* matrix d */
+
+    FT_Vector  fractionalTranslation;  /* including deviceXScale */
+#if 0
+    CF2_Fixed  hShift;    /* character space horizontal shift */
+                          /* (for fauxing)                    */
+#endif
+
+    FT_Bool  pathIsOpen;     /* true after MoveTo                     */
+    FT_Bool  darken;         /* true if stem darkening                */
+    FT_Bool  moveIsPending;  /* true between MoveTo and offset MoveTo */
+
+    /* references used to call `cf2_hintmap_build', if necessary */
+    CF2_ArrStack         hStemHintArray;
+    CF2_ArrStack         vStemHintArray;
+    CF2_HintMask         hintMask;     /* ptr to the current mask */
+    CF2_Fixed            hintOriginY;  /* copy of current origin  */
+    const CF2_BluesRec*  blues;
+
+    CF2_Fixed  xOffset;        /* character space offsets */
+    CF2_Fixed  yOffset;
+
+    /* character space miter limit threshold */
+    CF2_Fixed  miterLimit;
+    /* vertical/horzizontal snap distance in character space */
+    CF2_Fixed  snapThreshold;
+
+    FT_Vector  offsetStart0;  /* first and second points of first */
+    FT_Vector  offsetStart1;  /* element with offset applied      */
+
+    /* current point, character space, before offset */
+    FT_Vector  currentCS;
+    /* current point, device space */
+    FT_Vector  currentDS;
+    FT_Vector  start;         /* start point of subpath */
+
+    /* the following members constitute the `queue' of one element */
+    FT_Bool  elemIsQueued;
+    CF2_Int  prevElemOp;
+
+    FT_Vector  prevElemP0;
+    FT_Vector  prevElemP1;
+    FT_Vector  prevElemP2;
+    FT_Vector  prevElemP3;
+
+  } CF2_GlyphPathRec, *CF2_GlyphPath;
+
+
+  FT_LOCAL( void )
+  cf2_glyphpath_init( CF2_GlyphPath         glyphpath,
+                      CF2_Font              font,
+                      CF2_OutlineCallbacks  callbacks,
+                      CF2_Fixed             scaleY,
+                      /* CF2_Fixed hShift, */
+                      CF2_ArrStack          hStemHintArray,
+                      CF2_ArrStack          vStemHintArray,
+                      CF2_HintMask          hintMask,
+                      CF2_Fixed             hintOrigin,
+                      const CF2_Blues       blues,
+                      const FT_Vector*      fractionalTranslation );
+  FT_LOCAL( void )
+  cf2_glyphpath_finalize( CF2_GlyphPath  glyphpath );
+
+  FT_LOCAL( void )
+  cf2_glyphpath_moveTo( CF2_GlyphPath  glyphpath,
+                        CF2_Fixed      x,
+                        CF2_Fixed      y );
+  FT_LOCAL( void )
+  cf2_glyphpath_lineTo( CF2_GlyphPath  glyphpath,
+                        CF2_Fixed      x,
+                        CF2_Fixed      y );
+  FT_LOCAL( void )
+  cf2_glyphpath_curveTo( CF2_GlyphPath  glyphpath,
+                         CF2_Fixed      x1,
+                         CF2_Fixed      y1,
+                         CF2_Fixed      x2,
+                         CF2_Fixed      y2,
+                         CF2_Fixed      x3,
+                         CF2_Fixed      y3 );
+  FT_LOCAL( void )
+  cf2_glyphpath_closeOpenPath( CF2_GlyphPath  glyphpath );
+
+
+FT_END_HEADER
+
+
+#endif /* __CF2HINTS_H__ */
+
+
+/* END */