Update freetype sources (2.6.2) in third party.

third_party/freetype2/src/src/autofit/afblue.dat

Index: third_party/freetype2/src/src/autofit/afblue.dat
diff --git a/third_party/freetype2/src/src/autofit/afblue.dat b/third_party/freetype2/src/src/autofit/afblue.dat
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index 0000000000000000000000000000000000000000..1b52378ed3e7c6671df1057ccafe9baefb0615d1
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+++ b/third_party/freetype2/src/src/autofit/afblue.dat
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+//  afblue.dat
+//
+//    Auto-fitter data for blue strings.
+//
+//  Copyright 2013-2015 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.
+
+
+// This file contains data specific to blue zones.  It gets processed by
+// a script to simulate `jagged arrays', with enumeration values holding
+// offsets into the arrays.
+//
+// The format of the file is rather simple:  A section starts with three
+// labels separated by whitespace and followed by a colon (everything in a
+// single line); the first label gives the name of the enumeration template,
+// the second the name of the array template, and the third the name of the
+// `maximum' template, holding the size of the largest array element.  The
+// script then fills the corresponding templates (indicated by `@'
+// characters around the name).
+//
+// A section contains one or more data records.  Each data record consists
+// of two or more lines.  The first line holds the enumeration name, and the
+// remaining lines the corresponding array data.
+//
+// There are two possible representations for array data.
+//
+// - A string of characters in UTF-8 encoding enclosed in double quotes,
+//   using C syntax.  There can be only one string per line, thus the
+//   starting and ending double quote must be the first and last character
+//   in the line, respectively, ignoring whitespace before and after the
+//   string.  Space characters within the string are ignored too.  If there
+//   are multiple strings (in multiple lines), they are concatenated to a
+//   single string.  In the output, a string gets represented as a series of
+//   singles bytes, followed by a zero byte.  The enumeration values simply
+//   hold byte offsets to the start of the corresponding strings.
+//
+// - Data blocks enclosed in balanced braces, which get copied verbatim and
+//   which can span multiple lines.  The opening brace of a block must be
+//   the first character of a line (ignoring whitespace), and the closing
+//   brace the last (ignoring whitespace also).  The script appends a comma
+//   character after each block and counts the number of blocks to set the
+//   enumeration values.
+//
+// A section can contain either strings only or data blocks only.
+//
+// A comment line starts with `//'; it gets removed.  A preprocessor
+// directive line (using the standard syntax of `cpp') starts with `#' and
+// gets copied verbatim to both the enumeration and the array.  Whitespace
+// outside of a string is insignificant.
+//
+// Preprocessor directives are ignored while the script computes maximum
+// values; this essentially means that the maximum values can easily be too
+// large.  Given that the purpose of those values is to create local
+// fixed-size arrays at compile time for further processing of the blue zone
+// data, this isn't a problem.  Note the the final zero byte of a string is
+// not counted.  Note also that the count holds the number of UTF-8 encoded
+// characters, not bytes.
+
+
+// The blue zone string data, to be used in the blue stringsets below.
+
+AF_BLUE_STRING_ENUM AF_BLUE_STRINGS_ARRAY AF_BLUE_STRING_MAX_LEN:
+
+  AF_BLUE_STRING_ARABIC_TOP
+    "ا إ ل ك ط ظ"
+  AF_BLUE_STRING_ARABIC_BOTTOM
+    "ت ث ط ظ ك"
+  // We don't necessarily have access to medial forms via Unicode in case
+  // Arabic presentational forms are missing.  The only character that is
+  // guaranteed to have the same vertical position with joining (this is,
+  // non-isolated) forms is U+0640, ARABIC TATWEEL, which must join both
+  // round and flat curves.
+  AF_BLUE_STRING_ARABIC_JOIN
+    "ـ"
+
+  AF_BLUE_STRING_CYRILLIC_CAPITAL_TOP
+    "БВЕПЗОСЭ"
+  AF_BLUE_STRING_CYRILLIC_CAPITAL_BOTTOM
+    "БВЕШЗОСЭ"
+  AF_BLUE_STRING_CYRILLIC_SMALL
+    "хпншезос"
+  AF_BLUE_STRING_CYRILLIC_SMALL_DESCENDER
+    "руф"
+
+  // we separate the letters with spaces to avoid ligatures;
+  // this is just for convenience to simplify reading
+  AF_BLUE_STRING_DEVANAGARI_BASE
+    "क म अ आ थ ध भ श"
+  AF_BLUE_STRING_DEVANAGARI_TOP
+    "ई ऐ ओ औ ि ी ो ौ"
+  // note that some fonts have extreme variation in the height of the
+  // round head elements; for this reason we also define the `base'
+  // blue zone, which must be always present
+  AF_BLUE_STRING_DEVANAGARI_HEAD
+    "क म अ आ थ ध भ श"
+  AF_BLUE_STRING_DEVANAGARI_BOTTOM
+    "ु ृ"
+
+  AF_BLUE_STRING_GREEK_CAPITAL_TOP
+    "ΓΒΕΖΘΟΩ"
+  AF_BLUE_STRING_GREEK_CAPITAL_BOTTOM
+    "ΒΔΖΞΘΟ"
+  AF_BLUE_STRING_GREEK_SMALL_BETA_TOP
+    "βθδζλξ"
+  AF_BLUE_STRING_GREEK_SMALL
+    "αειοπστω"
+  AF_BLUE_STRING_GREEK_SMALL_DESCENDER
+    "βγημρφχψ"
+
+  AF_BLUE_STRING_HEBREW_TOP
+    "בדהחךכםס"
+  AF_BLUE_STRING_HEBREW_BOTTOM
+    "בטכםסצ"
+  AF_BLUE_STRING_HEBREW_DESCENDER
+    "קךןףץ"
+
+  AF_BLUE_STRING_LAO_TOP
+    "າ ດ ອ ມ ລ ວ ຣ ງ"
+  AF_BLUE_STRING_LAO_BOTTOM
+    "າ ອ ບ ຍ ຣ ຮ ວ ຢ"
+  AF_BLUE_STRING_LAO_ASCENDER
+    "ປ ຢ ຟ ຝ"
+  AF_BLUE_STRING_LAO_LARGE_ASCENDER
+    "ໂ ໄ ໃ"
+  AF_BLUE_STRING_LAO_DESCENDER
+    "ງ ຊ ຖ ຽ ໆ ຯ"
+
+  AF_BLUE_STRING_LATIN_CAPITAL_TOP
+    "THEZOCQS"
+  AF_BLUE_STRING_LATIN_CAPITAL_BOTTOM
+    "HEZLOCUS"
+  AF_BLUE_STRING_LATIN_SMALL_F_TOP
+    "fijkdbh"
+  AF_BLUE_STRING_LATIN_SMALL
+    "xzroesc"
+  AF_BLUE_STRING_LATIN_SMALL_DESCENDER
+    "pqgjy"
+
+  // we assume that both the subscript and superscript ranges
+  // don't contain oldstyle digits (actually, most fonts probably
+  // have digits only in those ranges)
+  AF_BLUE_STRING_LATIN_SUBS_CAPITAL_TOP
+    "₀₃₅₇₈"
+  AF_BLUE_STRING_LATIN_SUBS_CAPITAL_BOTTOM
+    "₀₁₂₃₈"
+  AF_BLUE_STRING_LATIN_SUBS_SMALL_F_TOP
+    "ᵢⱼₕₖₗ"
+  AF_BLUE_STRING_LATIN_SUBS_SMALL
+    "ₐₑₒₓₙₛᵥᵤᵣ"
+  AF_BLUE_STRING_LATIN_SUBS_SMALL_DESCENDER
+    "ᵦᵧᵨᵩₚ"
+
+  AF_BLUE_STRING_LATIN_SUPS_CAPITAL_TOP
+    "⁰³⁵⁷ᵀᴴᴱᴼ"
+  AF_BLUE_STRING_LATIN_SUPS_CAPITAL_BOTTOM
+    "⁰¹²³ᴱᴸᴼᵁ"
+  AF_BLUE_STRING_LATIN_SUPS_SMALL_F_TOP
+    "ᵇᵈᵏʰʲᶠⁱ"
+  AF_BLUE_STRING_LATIN_SUPS_SMALL
+    "ᵉᵒʳˢˣᶜᶻ"
+  AF_BLUE_STRING_LATIN_SUPS_SMALL_DESCENDER
+    "ᵖʸᵍ"
+
+  // we separate the letters with spaces to avoid ligatures;
+  // this is just for convenience to simplify reading
+  AF_BLUE_STRING_TELUGU_TOP
+    "ఇ ఌ ఙ ఞ ణ ఱ ౯"
+  AF_BLUE_STRING_TELUGU_BOTTOM
+    "అ క చ ర ఽ ౨ ౬"
+
+  AF_BLUE_STRING_THAI_TOP
+    "บ เ แ อ ก า"
+  AF_BLUE_STRING_THAI_BOTTOM
+    "บ ป ษ ฯ อ ย ฮ"
+  AF_BLUE_STRING_THAI_ASCENDER
+    "ป ฝ ฟ"
+  AF_BLUE_STRING_THAI_LARGE_ASCENDER
+    "โ ใ ไ"
+  AF_BLUE_STRING_THAI_DESCENDER
+    "ฎ ฏ ฤ ฦ"
+  AF_BLUE_STRING_THAI_LARGE_DESCENDER
+    "ญ ฐ"
+  AF_BLUE_STRING_THAI_DIGIT_TOP
+    "๐ ๑ ๓"
+
+
+#ifdef AF_CONFIG_OPTION_CJK
+
+  AF_BLUE_STRING_CJK_TOP
+    "他们你來們到和地"
+    "对對就席我时時會"
+    "来為能舰說说这這"
+    "齊 |"
+    "军同已愿既星是景"
+    "民照现現理用置要"
+    "軍那配里開雷露面"
+    "顾"
+  AF_BLUE_STRING_CJK_BOTTOM
+    "个为人他以们你來"
+    "個們到和大对對就"
+    "我时時有来為要說"
+    "说 |"
+    "主些因它想意理生"
+    "當看着置者自著裡"
+    "过还进進過道還里"
+    "面"
+
+#ifdef AF_CONFIG_OPTION_CJK_BLUE_HANI_VERT
+
+  AF_BLUE_STRING_CJK_LEFT
+    "些们你來們到和地"
+    "她将將就年得情最"
+    "样樣理能說说这這"
+    "通 |"
+    "即吗吧听呢品响嗎"
+    "师師收断斷明眼間"
+    "间际陈限除陳随際"
+    "隨"
+  AF_BLUE_STRING_CJK_RIGHT
+    "事前學将將情想或"
+    "政斯新样樣民沒没"
+    "然特现現球第經谁"
+    "起 |"
+    "例別别制动動吗嗎"
+    "增指明朝期构物确"
+    "种調调費费那都間"
+    "间"
+
+#endif /* AF_CONFIG_OPTION_CJK_BLUE_HANI_VERT */
+
+#endif /* AF_CONFIG_OPTION_CJK                */
+
+
+// The blue zone stringsets, as used in the script styles, cf. `afstyles.h'.
+//
+// The AF_BLUE_PROPERTY_XXX flags are defined in `afblue.h'; here some
+// explanations.
+//
+// A blue zone in general is defined by a reference and an overshoot line.
+// During the hinting process, all coordinate values between those two lines
+// are set equal to the reference value, provided that the blue zone is not
+// wider than 0.75 pixels (otherwise the blue zone gets ignored).  All
+// entries must have `AF_BLUE_STRING_MAX' as the final line.
+//
+// During the glyph analysis, edges are sorted from bottom to top, and then
+// sequentially checked, edge by edge, against the blue zones in the order
+// given below.
+//
+//
+// latin auto-hinter
+// -----------------
+//
+// Characters in a blue string are automatically classified as having a flat
+// (reference) or a round (overshoot) extremum.  The blue zone is then set
+// up by the mean values of all flat extrema and all round extrema,
+// respectively.  Only horizontal blue zones (i.e., adjusting vertical
+// coordinate values) are supported.
+//
+// For the latin auto-hinter, the overshoot should be larger than the
+// reference for top zones, and vice versa for bottom zones.
+//
+//   LATIN_TOP
+//     Take the maximum flat and round coordinate values of the blue string
+//     characters for computing the blue zone's reference and overshoot
+//     values.
+//
+//     If not set, take the minimum values.
+//
+//   LATIN_NEUTRAL
+//     Ignore round extrema and define the blue zone with flat values only.
+//     Both top and bottom of contours can match.  This is useful for
+//     scripts like Devanagari where vowel signs attach to the base
+//     character and are implemented as components of composite glyphs.
+//
+//     If not set, both round and flat extrema are taken into account.
+//     Additionally, only the top or the bottom of a contour can match,
+//     depending on the LATIN_TOP flag.
+//
+//     Neutral blue zones should always follow non-neutral blue zones.
+//
+//   LATIN_X_HEIGHT
+//     Scale all glyphs vertically from the corresponding script to make the
+//     reference line of this blue zone align on the grid.  The scaling
+//     takes place before all other blue zones get aligned to the grid.
+//     Only one blue character string of a script style can have this flag.
+//
+//   LATIN_LONG
+//     Apply an additional constraint for blue zone values: Don't
+//     necessarily use the extremum as-is but a segment of the topmost (or
+//     bottommost) contour that is longer than a heuristic threshold, and
+//     which is not too far away vertically from the real extremum.  This
+//     ensures that small bumps in the outline are ignored (for example, the
+//     `vertical serifs' found in many Hebrew glyph designs).
+//
+//     The segment must be at least EM/25 font units long, and the distance
+//     to the extremum must be smaller than EM/4.
+//
+//
+// cjk auto-hinter
+// ---------------
+//
+// Characters in a blue string are *not* automatically classified.  Instead,
+// first come the characters used for the overshoot value, then the
+// character `|', then the characters used for the reference value.  The
+// blue zone is then set up by the mean values of all reference values and
+// all overshoot values, respectively.  Both horizontal and vertical blue
+// zones (i.e., adjusting vertical and horizontal coordinate values,
+// respectively) are supported.
+//
+// For the cjk auto-hinter, the overshoot should be smaller than the
+// reference for top zones, and vice versa for bottom zones.
+//
+//   CJK_TOP
+//     Take the maximum flat and round coordinate values of the blue string
+//     characters.  If not set, take the minimum values.
+//
+//   CJK_RIGHT
+//     A synonym for CJK_TOP.  If CJK_HORIZ is set, this flag indicates the
+//     right blue zone, taking horizontal maximum values.
+//
+//   CJK_HORIZ
+//     Define a blue zone for horizontal hinting (i.e., vertical blue
+//     zones).  If not set, this is a blue zone for vertical hinting.
+
+
+AF_BLUE_STRINGSET_ENUM AF_BLUE_STRINGSETS_ARRAY AF_BLUE_STRINGSET_MAX_LEN:
+
+  AF_BLUE_STRINGSET_ARAB
+    { AF_BLUE_STRING_ARABIC_TOP,    AF_BLUE_PROPERTY_LATIN_TOP     }
+    { AF_BLUE_STRING_ARABIC_BOTTOM, 0                              }
+    { AF_BLUE_STRING_ARABIC_JOIN,   AF_BLUE_PROPERTY_LATIN_NEUTRAL }
+    { AF_BLUE_STRING_MAX,           0                              }
+
+  AF_BLUE_STRINGSET_CYRL
+    { AF_BLUE_STRING_CYRILLIC_CAPITAL_TOP,     AF_BLUE_PROPERTY_LATIN_TOP        }
+    { AF_BLUE_STRING_CYRILLIC_CAPITAL_BOTTOM,  0                                 }
+    { AF_BLUE_STRING_CYRILLIC_SMALL,           AF_BLUE_PROPERTY_LATIN_TOP      |
+                                               AF_BLUE_PROPERTY_LATIN_X_HEIGHT   }
+    { AF_BLUE_STRING_CYRILLIC_SMALL,           0                                 }
+    { AF_BLUE_STRING_CYRILLIC_SMALL_DESCENDER, 0                                 }
+    { AF_BLUE_STRING_MAX,                      0                                 }
+
+  AF_BLUE_STRINGSET_DEVA
+    { AF_BLUE_STRING_DEVANAGARI_TOP,    AF_BLUE_PROPERTY_LATIN_TOP        }
+    { AF_BLUE_STRING_DEVANAGARI_HEAD,   AF_BLUE_PROPERTY_LATIN_TOP        }
+    { AF_BLUE_STRING_DEVANAGARI_BASE,   AF_BLUE_PROPERTY_LATIN_TOP      |
+                                        AF_BLUE_PROPERTY_LATIN_NEUTRAL  |
+                                        AF_BLUE_PROPERTY_LATIN_X_HEIGHT   }
+    { AF_BLUE_STRING_DEVANAGARI_BASE,   0                                 }
+    { AF_BLUE_STRING_DEVANAGARI_BOTTOM, 0                                 }
+    { AF_BLUE_STRING_MAX,               0                                 }
+
+  AF_BLUE_STRINGSET_GREK
+    { AF_BLUE_STRING_GREEK_CAPITAL_TOP,     AF_BLUE_PROPERTY_LATIN_TOP        }
+    { AF_BLUE_STRING_GREEK_CAPITAL_BOTTOM,  0                                 }
+    { AF_BLUE_STRING_GREEK_SMALL_BETA_TOP,  AF_BLUE_PROPERTY_LATIN_TOP        }
+    { AF_BLUE_STRING_GREEK_SMALL,           AF_BLUE_PROPERTY_LATIN_TOP      |
+                                            AF_BLUE_PROPERTY_LATIN_X_HEIGHT   }
+    { AF_BLUE_STRING_GREEK_SMALL,           0                                 }
+    { AF_BLUE_STRING_GREEK_SMALL_DESCENDER, 0                                 }
+    { AF_BLUE_STRING_MAX,                   0                                 }
+
+  AF_BLUE_STRINGSET_HEBR
+    { AF_BLUE_STRING_HEBREW_TOP,       AF_BLUE_PROPERTY_LATIN_TOP  |
+                                       AF_BLUE_PROPERTY_LATIN_LONG   }
+    { AF_BLUE_STRING_HEBREW_BOTTOM,    0                             }
+    { AF_BLUE_STRING_HEBREW_DESCENDER, 0                             }
+    { AF_BLUE_STRING_MAX,              0                             }
+
+  AF_BLUE_STRINGSET_LAO
+    { AF_BLUE_STRING_LAO_TOP,             AF_BLUE_PROPERTY_LATIN_TOP      |
+                                          AF_BLUE_PROPERTY_LATIN_X_HEIGHT   }
+    { AF_BLUE_STRING_LAO_BOTTOM,          0                                 }
+    { AF_BLUE_STRING_LAO_ASCENDER,        AF_BLUE_PROPERTY_LATIN_TOP        }
+    { AF_BLUE_STRING_LAO_LARGE_ASCENDER,  AF_BLUE_PROPERTY_LATIN_TOP        }
+    { AF_BLUE_STRING_LAO_DESCENDER,       0                                 }
+    { AF_BLUE_STRING_MAX,                 0                                 }
+
+  AF_BLUE_STRINGSET_LATN
+    { AF_BLUE_STRING_LATIN_CAPITAL_TOP,     AF_BLUE_PROPERTY_LATIN_TOP        }
+    { AF_BLUE_STRING_LATIN_CAPITAL_BOTTOM,  0                                 }
+    { AF_BLUE_STRING_LATIN_SMALL_F_TOP,     AF_BLUE_PROPERTY_LATIN_TOP        }
+    { AF_BLUE_STRING_LATIN_SMALL,           AF_BLUE_PROPERTY_LATIN_TOP      |
+                                            AF_BLUE_PROPERTY_LATIN_X_HEIGHT   }
+    { AF_BLUE_STRING_LATIN_SMALL,           0                                 }
+    { AF_BLUE_STRING_LATIN_SMALL_DESCENDER, 0                                 }
+    { AF_BLUE_STRING_MAX,                   0                                 }
+
+  AF_BLUE_STRINGSET_LATB
+    { AF_BLUE_STRING_LATIN_SUBS_CAPITAL_TOP,     AF_BLUE_PROPERTY_LATIN_TOP        }
+    { AF_BLUE_STRING_LATIN_SUBS_CAPITAL_BOTTOM,  0                                 }
+    { AF_BLUE_STRING_LATIN_SUBS_SMALL_F_TOP,     AF_BLUE_PROPERTY_LATIN_TOP        }
+    { AF_BLUE_STRING_LATIN_SUBS_SMALL,           AF_BLUE_PROPERTY_LATIN_TOP      |
+                                                 AF_BLUE_PROPERTY_LATIN_X_HEIGHT   }
+    { AF_BLUE_STRING_LATIN_SUBS_SMALL,           0                                 }
+    { AF_BLUE_STRING_LATIN_SUBS_SMALL_DESCENDER, 0                                 }
+    { AF_BLUE_STRING_MAX,                        0                                 }
+
+  AF_BLUE_STRINGSET_LATP
+    { AF_BLUE_STRING_LATIN_SUPS_CAPITAL_TOP,     AF_BLUE_PROPERTY_LATIN_TOP        }
+    { AF_BLUE_STRING_LATIN_SUPS_CAPITAL_BOTTOM,  0                                 }
+    { AF_BLUE_STRING_LATIN_SUPS_SMALL_F_TOP,     AF_BLUE_PROPERTY_LATIN_TOP        }
+    { AF_BLUE_STRING_LATIN_SUPS_SMALL,           AF_BLUE_PROPERTY_LATIN_TOP      |
+                                                 AF_BLUE_PROPERTY_LATIN_X_HEIGHT   }
+    { AF_BLUE_STRING_LATIN_SUPS_SMALL,           0                                 }
+    { AF_BLUE_STRING_LATIN_SUPS_SMALL_DESCENDER, 0                                 }
+    { AF_BLUE_STRING_MAX,                        0                                 }
+
+  AF_BLUE_STRINGSET_TELU
+    { AF_BLUE_STRING_TELUGU_TOP,    AF_BLUE_PROPERTY_LATIN_TOP }
+    { AF_BLUE_STRING_TELUGU_BOTTOM, 0                          }
+    { AF_BLUE_STRING_MAX,           0                          }
+
+  AF_BLUE_STRINGSET_THAI
+    { AF_BLUE_STRING_THAI_TOP,             AF_BLUE_PROPERTY_LATIN_TOP      |
+                                           AF_BLUE_PROPERTY_LATIN_X_HEIGHT   }
+    { AF_BLUE_STRING_THAI_BOTTOM,          0                                 }
+    { AF_BLUE_STRING_THAI_ASCENDER,        AF_BLUE_PROPERTY_LATIN_TOP        }
+    { AF_BLUE_STRING_THAI_LARGE_ASCENDER,  AF_BLUE_PROPERTY_LATIN_TOP        }
+    { AF_BLUE_STRING_THAI_DESCENDER,       0                                 }
+    { AF_BLUE_STRING_THAI_LARGE_DESCENDER, 0                                 }
+    { AF_BLUE_STRING_THAI_DIGIT_TOP,       0                                 }
+    { AF_BLUE_STRING_MAX,                  0                                 }
+
+
+#ifdef AF_CONFIG_OPTION_CJK
+
+  AF_BLUE_STRINGSET_HANI
+    { AF_BLUE_STRING_CJK_TOP,    AF_BLUE_PROPERTY_CJK_TOP     }
+    { AF_BLUE_STRING_CJK_BOTTOM, 0                            }
+#ifdef AF_CONFIG_OPTION_CJK_BLUE_HANI_VERT
+    { AF_BLUE_STRING_CJK_LEFT,   AF_BLUE_PROPERTY_CJK_HORIZ   }
+    { AF_BLUE_STRING_CJK_RIGHT,  AF_BLUE_PROPERTY_CJK_HORIZ |
+                                 AF_BLUE_PROPERTY_CJK_RIGHT   }
+#endif /* AF_CONFIG_OPTION_CJK_BLUE_HANI_VERT */
+    { AF_BLUE_STRING_MAX,        0                            }
+
+#endif /* AF_CONFIG_OPTION_CJK                */
+
+
+// END