diff options
author | Akira Kakuto <kakuto@fuk.kindai.ac.jp> | 2018-03-07 22:32:14 +0000 |
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committer | Akira Kakuto <kakuto@fuk.kindai.ac.jp> | 2018-03-07 22:32:14 +0000 |
commit | ef9282421b00185a4962b7d22b96e979687258e2 (patch) | |
tree | b6d0d8c700086d3141e228187693a26b102c971f /Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-maxp-table.hh | |
parent | 55fbdeae2498166ec7c7301fd48d990fc9010058 (diff) |
harfbuzz-1.7.6
git-svn-id: svn://tug.org/texlive/trunk@46877 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-maxp-table.hh')
-rw-r--r-- | Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-maxp-table.hh | 88 |
1 files changed, 82 insertions, 6 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-maxp-table.hh b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-maxp-table.hh index 54b4f11ce65..881dedad54c 100644 --- a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-maxp-table.hh +++ b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-maxp-table.hh @@ -28,7 +28,7 @@ #define HB_OT_MAXP_TABLE_HH #include "hb-open-type-private.hh" - +#include "hb-subset-plan.hh" namespace OT { @@ -39,28 +39,104 @@ namespace OT { #define HB_OT_TAG_maxp HB_TAG('m','a','x','p') +struct maxpV1Tail +{ + inline bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + HBUINT16 maxPoints; /* Maximum points in a non-composite glyph. */ + HBUINT16 maxContours; /* Maximum contours in a non-composite glyph. */ + HBUINT16 maxCompositePoints; /* Maximum points in a composite glyph. */ + HBUINT16 maxCompositeContours; /* Maximum contours in a composite glyph. */ + HBUINT16 maxZones; /* 1 if instructions do not use the twilight zone (Z0), + * or 2 if instructions do use Z0; should be set to 2 in + * most cases. */ + HBUINT16 maxTwilightPoints; /* Maximum points used in Z0. */ + HBUINT16 maxStorage; /* Number of Storage Area locations. */ + HBUINT16 maxFunctionDefs; /* Number of FDEFs, equal to the highest function number + 1. */ + HBUINT16 maxInstructionDefs; /* Number of IDEFs. */ + HBUINT16 maxStackElements; /* Maximum stack depth. (This includes Font and CVT + * Programs, as well as the instructions for each glyph.) */ + HBUINT16 maxSizeOfInstructions; /* Maximum byte count for glyph instructions. */ + HBUINT16 maxComponentElements; /* Maximum number of components referenced at + * "top level" for any composite glyph. */ + HBUINT16 maxComponentDepth; /* Maximum levels of recursion; 1 for simple components. */ + public: + DEFINE_SIZE_STATIC (26); +}; + + struct maxp { - static const hb_tag_t tableTag = HB_OT_TAG_maxp; + static const hb_tag_t tableTag = HB_OT_TAG_maxp; inline unsigned int get_num_glyphs (void) const { return numGlyphs; } + inline void set_num_glyphs (unsigned int count) + { + numGlyphs.set (count); + } + inline bool sanitize (hb_sanitize_context_t *c) const { TRACE_SANITIZE (this); - return_trace (c->check_struct (this) && - likely (version.major == 1 || - (version.major == 0 && version.minor == 0x5000u))); + if (unlikely (!c->check_struct (this))) + return_trace (false); + + if (version.major == 1) + { + const maxpV1Tail &v1 = StructAfter<maxpV1Tail> (*this); + return v1.sanitize (c); + } + return_trace (likely (version.major == 0 && version.minor == 0x5000u)); + } + + inline bool subset (hb_subset_plan_t *plan) const + { + hb_blob_t *maxp_blob = OT::Sanitizer<OT::maxp>().sanitize (hb_face_reference_table (plan->source, HB_OT_TAG_maxp)); + hb_blob_t *maxp_prime_blob = hb_blob_copy_writable_or_fail (maxp_blob); + hb_blob_destroy (maxp_blob); + + if (unlikely (!maxp_prime_blob)) { + return false; + } + OT::maxp *maxp_prime = (OT::maxp *) hb_blob_get_data (maxp_prime_blob, nullptr); + + maxp_prime->set_num_glyphs (plan->gids_to_retain_sorted.len); + if (plan->drop_hints) + drop_hint_fields (plan, maxp_prime); + + bool result = hb_subset_plan_add_table(plan, HB_OT_TAG_maxp, maxp_prime_blob); + hb_blob_destroy (maxp_prime_blob); + return result; + } + + static inline void drop_hint_fields (hb_subset_plan_t *plan, OT::maxp *maxp_prime) + { + if (maxp_prime->version.major == 1) + { + maxpV1Tail &v1 = StructAfter<maxpV1Tail> (*maxp_prime); + v1.maxZones.set (1); + v1.maxTwilightPoints.set (0); + v1.maxStorage.set (0); + v1.maxFunctionDefs.set (0); + v1.maxInstructionDefs.set (0); + v1.maxStackElements.set (0); + v1.maxSizeOfInstructions.set (0); + } } - /* We only implement version 0.5 as none of the extra fields in version 1.0 are useful. */ protected: FixedVersion<>version; /* Version of the maxp table (0.5 or 1.0), * 0x00005000u or 0x00010000u. */ HBUINT16 numGlyphs; /* The number of glyphs in the font. */ +/*maxpV1Tail v1Tail[VAR]; */ public: DEFINE_SIZE_STATIC (6); }; |