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+/*
+ * Copyright © 2018 Ebrahim Byagowi
+ *
+ * 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.
+ */
+
+#ifndef HB_AAT_LAYOUT_ANKR_TABLE_HH
+#define HB_AAT_LAYOUT_ANKR_TABLE_HH
+
+#include "hb-aat-layout-common.hh"
+
+/*
+ * ankr -- Anchor Point
+ * https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6ankr.html
+ */
+#define HB_AAT_TAG_ankr HB_TAG('a','n','k','r')
+
+
+namespace AAT {
+
+using namespace OT;
+
+
+struct Anchor
+{
+ bool sanitize (hb_sanitize_context_t *c) const
+ {
+ TRACE_SANITIZE (this);
+ return_trace (c->check_struct (this));
+ }
+
+ public:
+ FWORD xCoordinate;
+ FWORD yCoordinate;
+ public:
+ DEFINE_SIZE_STATIC (4);
+};
+
+typedef Array32Of<Anchor> GlyphAnchors;
+
+struct ankr
+{
+ static constexpr hb_tag_t tableTag = HB_AAT_TAG_ankr;
+
+ const Anchor &get_anchor (hb_codepoint_t glyph_id,
+ unsigned int i,
+ unsigned int num_glyphs) const
+ {
+ const NNOffset16To<GlyphAnchors> *offset = (this+lookupTable).get_value (glyph_id, num_glyphs);
+ if (!offset)
+ return Null (Anchor);
+ const GlyphAnchors &anchors = &(this+anchorData) + *offset;
+ return anchors[i];
+ }
+
+ bool sanitize (hb_sanitize_context_t *c) const
+ {
+ TRACE_SANITIZE (this);
+ return_trace (likely (c->check_struct (this) &&
+ version == 0 &&
+ c->check_range (this, anchorData) &&
+ lookupTable.sanitize (c, this, &(this+anchorData))));
+ }
+
+ protected:
+ HBUINT16 version; /* Version number (set to zero) */
+ HBUINT16 flags; /* Flags (currently unused; set to zero) */
+ Offset32To<Lookup<NNOffset16To<GlyphAnchors>>>
+ lookupTable; /* Offset to the table's lookup table */
+ NNOffset32To<HBUINT8>
+ anchorData; /* Offset to the glyph data table */
+
+ public:
+ DEFINE_SIZE_STATIC (12);
+};
+
+} /* namespace AAT */
+
+
+#endif /* HB_AAT_LAYOUT_ANKR_TABLE_HH */