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authorKarl Berry <karl@freefriends.org>2021-02-25 19:22:25 +0000
committerKarl Berry <karl@freefriends.org>2021-02-25 19:22:25 +0000
commitad547a6b5986815fda458221149728d9d9ab1d87 (patch)
tree16296910eb3eca724371474ea9aea3994dc69614 /Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-maxp-table.hh
parent947b43de3dd21d58ccc2ffadefc4441ea1c2a813 (diff)
restore Build,TODO from r57911
git-svn-id: svn://tug.org/texlive/trunk@57915 c570f23f-e606-0410-a88d-b1316a301751
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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
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+/*
+ * Copyright © 2011,2012 Google, Inc.
+ *
+ * This is part of HarfBuzz, a text shaping library.
+ *
+ * Permission is hereby granted, without written agreement and without
+ * license or royalty fees, to use, copy, modify, and distribute this
+ * software and its documentation for any purpose, provided that the
+ * above copyright notice and the following two paragraphs appear in
+ * all copies of this software.
+ *
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
+ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * Google Author(s): Behdad Esfahbod
+ */
+
+#ifndef HB_OT_MAXP_TABLE_HH
+#define HB_OT_MAXP_TABLE_HH
+
+#include "hb-open-type.hh"
+
+namespace OT {
+
+
+/*
+ * maxp -- Maximum Profile
+ * https://docs.microsoft.com/en-us/typography/opentype/spec/maxp
+ */
+
+#define HB_OT_TAG_maxp HB_TAG('m','a','x','p')
+
+struct maxpV1Tail
+{
+ 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 constexpr hb_tag_t tableTag = HB_OT_TAG_maxp;
+
+ unsigned int get_num_glyphs () const { return numGlyphs; }
+
+ void set_num_glyphs (unsigned int count)
+ {
+ numGlyphs = count;
+ }
+
+ bool sanitize (hb_sanitize_context_t *c) const
+ {
+ TRACE_SANITIZE (this);
+ if (unlikely (!c->check_struct (this)))
+ return_trace (false);
+
+ if (version.major == 1)
+ {
+ const maxpV1Tail &v1 = StructAfter<maxpV1Tail> (*this);
+ return_trace (v1.sanitize (c));
+ }
+ return_trace (likely (version.major == 0 && version.minor == 0x5000u));
+ }
+
+ bool subset (hb_subset_context_t *c) const
+ {
+ TRACE_SUBSET (this);
+ maxp *maxp_prime = c->serializer->embed (this);
+ if (unlikely (!maxp_prime)) return_trace (false);
+
+ maxp_prime->numGlyphs = c->plan->num_output_glyphs ();
+ if (maxp_prime->version.major == 1)
+ {
+ const maxpV1Tail *src_v1 = &StructAfter<maxpV1Tail> (*this);
+ maxpV1Tail *dest_v1 = c->serializer->embed<maxpV1Tail> (src_v1);
+ if (unlikely (!dest_v1)) return_trace (false);
+
+ if (c->plan->drop_hints)
+ drop_hint_fields (dest_v1);
+ }
+
+ return_trace (true);
+ }
+
+ static void drop_hint_fields (maxpV1Tail* dest_v1)
+ {
+ dest_v1->maxZones = 1;
+ dest_v1->maxTwilightPoints = 0;
+ dest_v1->maxStorage = 0;
+ dest_v1->maxFunctionDefs = 0;
+ dest_v1->maxInstructionDefs = 0;
+ dest_v1->maxStackElements = 0;
+ dest_v1->maxSizeOfInstructions = 0;
+ }
+
+ 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[HB_VAR_ARRAY]; */
+ public:
+ DEFINE_SIZE_STATIC (6);
+};
+
+
+} /* namespace OT */
+
+
+#endif /* HB_OT_MAXP_TABLE_HH */