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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_FEAT_TABLE_HH
+#define HB_AAT_LAYOUT_FEAT_TABLE_HH
+
+#include "hb-aat-layout-common-private.hh"
+
+/*
+ * feat -- Feature Name
+ * https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6feat.html
+ */
+#define HB_AAT_TAG_feat HB_TAG('f','e','a','t')
+
+
+namespace AAT {
+
+
+struct SettingName
+{
+ inline bool sanitize (hb_sanitize_context_t *c) const
+ {
+ TRACE_SANITIZE (this);
+ return_trace (likely (c->check_struct (this)));
+ }
+
+ protected:
+ HBUINT16 setting; /* The setting. */
+ NameID nameIndex; /* The name table index for the setting's name. */
+ public:
+ DEFINE_SIZE_STATIC (4);
+};
+
+struct FeatureName
+{
+ inline bool sanitize (hb_sanitize_context_t *c, const void *base) const
+ {
+ TRACE_SANITIZE (this);
+ return_trace (likely (c->check_struct (this) &&
+ (base+settingTable).sanitize (c, nSettings)));
+ }
+
+ enum {
+ Exclusive = 0x8000, /* If set, the feature settings are mutually exclusive. */
+ NotDefault = 0x4000, /* If clear, then the setting with an index of 0 in
+ * the setting name array for this feature should
+ * be taken as the default for the feature
+ * (if one is required). If set, then bits 0-15 of this
+ * featureFlags field contain the index of the setting
+ * which is to be taken as the default. */
+ IndexMask = 0x00FF /* If bits 30 and 31 are set, then these sixteen bits
+ * indicate the index of the setting in the setting name
+ * array for this feature which should be taken
+ * as the default. */
+ };
+
+ protected:
+ HBUINT16 feature; /* Feature type. */
+ HBUINT16 nSettings; /* The number of records in the setting name array. */
+ LOffsetTo<UnsizedArrayOf<SettingName> >
+ settingTable; /* Offset in bytes from the beginning of this table to
+ * this feature's setting name array. The actual type of
+ * record this offset refers to will depend on the
+ * exclusivity value, as described below. */
+ HBUINT16 featureFlags; /* Single-bit flags associated with the feature type. */
+ HBINT16 nameIndex; /* The name table index for the feature's name.
+ * This index has values greater than 255 and
+ * less than 32768. */
+ public:
+ DEFINE_SIZE_STATIC (12);
+};
+
+struct feat
+{
+ static const hb_tag_t tableTag = HB_AAT_TAG_feat;
+
+ inline bool sanitize (hb_sanitize_context_t *c) const
+ {
+ TRACE_SANITIZE (this);
+ return_trace (likely (c->check_struct (this) &&
+ names.sanitize (c, featureNameCount, this)));
+ }
+
+ protected:
+ FixedVersion<>version; /* Version number of the feature name table
+ * (0x00010000 for the current version). */
+ HBUINT16 featureNameCount;
+ /* The number of entries in the feature name array. */
+ HBUINT16 reserved1; /* Reserved (set to zero). */
+ HBUINT32 reserved2; /* Reserved (set to zero). */
+ UnsizedArrayOf<FeatureName>
+ names; /* The feature name array. */
+ public:
+ DEFINE_SIZE_STATIC (24);
+};
+
+} /* namespace AAT */
+
+#endif /* HB_AAT_LAYOUT_FEAT_TABLE_HH */