--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.desktop/share/native/libfontmanager/harfbuzz/hb-aat-layout-feat-table.hh Fri Mar 01 16:59:19 2019 -0800
@@ -0,0 +1,217 @@
+/*
+ * 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.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
+{
+ friend struct FeatureName;
+
+ int cmp (hb_aat_layout_feature_selector_t key) const
+ { return (int) key - (int) setting; }
+
+ hb_aat_layout_feature_selector_t get_selector () const
+ { return (hb_aat_layout_feature_selector_t) (unsigned) setting; }
+
+ void get_info (hb_aat_layout_feature_selector_info_t *s,
+ hb_aat_layout_feature_selector_t default_selector) const
+ {
+ s->name_id = nameIndex;
+
+ s->enable = (hb_aat_layout_feature_selector_t) (unsigned int) setting;
+ s->disable = default_selector == HB_AAT_LAYOUT_FEATURE_SELECTOR_INVALID ?
+ (hb_aat_layout_feature_selector_t) (s->enable + 1) :
+ default_selector;
+
+ s->reserved = 0;
+ }
+
+ 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);
+};
+DECLARE_NULL_NAMESPACE_BYTES (AAT, SettingName);
+
+struct feat;
+
+struct FeatureName
+{
+ int cmp (hb_aat_layout_feature_type_t key) const
+ { return (int) key - (int) feature; }
+
+ 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. */
+ };
+
+ unsigned int get_selector_infos (unsigned int start_offset,
+ unsigned int *selectors_count, /* IN/OUT. May be NULL. */
+ hb_aat_layout_feature_selector_info_t *selectors, /* OUT. May be NULL. */
+ unsigned int *pdefault_index, /* OUT. May be NULL. */
+ const void *base) const
+ {
+ hb_array_t< const SettingName> settings_table = (base+settingTableZ).as_array (nSettings);
+
+ static_assert (Index::NOT_FOUND_INDEX == HB_AAT_LAYOUT_NO_SELECTOR_INDEX, "");
+
+ hb_aat_layout_feature_selector_t default_selector = HB_AAT_LAYOUT_FEATURE_SELECTOR_INVALID;
+ unsigned int default_index = Index::NOT_FOUND_INDEX;
+ if (featureFlags & Exclusive)
+ {
+ default_index = (featureFlags & NotDefault) ? featureFlags & IndexMask : 0;
+ default_selector = settings_table[default_index].get_selector ();
+ }
+ if (pdefault_index)
+ *pdefault_index = default_index;
+
+ if (selectors_count)
+ {
+ hb_array_t<const SettingName> arr = settings_table.sub_array (start_offset, selectors_count);
+ for (unsigned int i = 0; i < arr.length; i++)
+ settings_table[start_offset + i].get_info (&selectors[i], default_selector);
+ }
+ return settings_table.length;
+ }
+
+ hb_aat_layout_feature_type_t get_feature_type () const
+ { return (hb_aat_layout_feature_type_t) (unsigned int) feature; }
+
+ hb_ot_name_id_t get_feature_name_id () const { return nameIndex; }
+
+ bool sanitize (hb_sanitize_context_t *c, const void *base) const
+ {
+ TRACE_SANITIZE (this);
+ return_trace (likely (c->check_struct (this) &&
+ (base+settingTableZ).sanitize (c, nSettings)));
+ }
+
+ protected:
+ HBUINT16 feature; /* Feature type. */
+ HBUINT16 nSettings; /* The number of records in the setting name array. */
+ LOffsetTo<UnsizedArrayOf<SettingName>, false>
+ settingTableZ; /* 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 constexpr hb_tag_t tableTag = HB_AAT_TAG_feat;
+
+ bool has_data () const { return version.to_int (); }
+
+ unsigned int get_feature_types (unsigned int start_offset,
+ unsigned int *count,
+ hb_aat_layout_feature_type_t *features) const
+ {
+ unsigned int feature_count = featureNameCount;
+ if (count && *count)
+ {
+ unsigned int len = MIN (feature_count - start_offset, *count);
+ for (unsigned int i = 0; i < len; i++)
+ features[i] = namesZ[i + start_offset].get_feature_type ();
+ *count = len;
+ }
+ return featureNameCount;
+ }
+
+ const FeatureName& get_feature (hb_aat_layout_feature_type_t feature_type) const
+ {
+ return namesZ.bsearch (featureNameCount, feature_type);
+ }
+
+ hb_ot_name_id_t get_feature_name_id (hb_aat_layout_feature_type_t feature) const
+ { return get_feature (feature).get_feature_name_id (); }
+
+ unsigned int get_selector_infos (hb_aat_layout_feature_type_t feature_type,
+ unsigned int start_offset,
+ unsigned int *selectors_count, /* IN/OUT. May be NULL. */
+ hb_aat_layout_feature_selector_info_t *selectors, /* OUT. May be NULL. */
+ unsigned int *default_index /* OUT. May be NULL. */) const
+ {
+ return get_feature (feature_type).get_selector_infos (start_offset, selectors_count, selectors,
+ default_index, this);
+ }
+
+ bool sanitize (hb_sanitize_context_t *c) const
+ {
+ TRACE_SANITIZE (this);
+ return_trace (likely (c->check_struct (this) &&
+ version.major == 1 &&
+ namesZ.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). */
+ SortedUnsizedArrayOf<FeatureName>
+ namesZ; /* The feature name array. */
+ public:
+ DEFINE_SIZE_STATIC (24);
+};
+
+} /* namespace AAT */
+
+#endif /* HB_AAT_LAYOUT_FEAT_TABLE_HH */