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// Copyright (c) 2009-2017 The OTS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef OTS_FEAT_H_
#define OTS_FEAT_H_
#include <vector>
#include <unordered_set>
#include "ots.h"
#include "graphite.h"
namespace ots {
class OpenTypeFEAT : public Table {
public:
explicit OpenTypeFEAT(Font* font, uint32_t tag)
: Table(font, tag, tag) { }
bool Parse(const uint8_t* data, size_t length);
bool Serialize(OTSStream* out);
bool IsValidFeatureId(uint32_t id) const;
private:
struct FeatureDefn : public TablePart<OpenTypeFEAT> {
explicit FeatureDefn(OpenTypeFEAT* parent)
: TablePart<OpenTypeFEAT>(parent) { }
bool ParsePart(Buffer& table);
bool SerializePart(OTSStream* out) const;
uint32_t id;
uint16_t numSettings;
uint16_t reserved;
uint32_t offset;
uint16_t flags;
static const uint16_t HAS_DEFAULT_SETTING = 0x4000;
static const uint16_t RESERVED = 0x3700;
static const uint16_t DEFAULT_SETTING = 0x00FF;
uint16_t label;
};
struct FeatureSettingDefn : public TablePart<OpenTypeFEAT> {
explicit FeatureSettingDefn(OpenTypeFEAT* parent)
: TablePart<OpenTypeFEAT>(parent) { }
bool ParsePart(Buffer& table) { return ParsePart(table, true); }
bool ParsePart(Buffer& table, bool used);
bool SerializePart(OTSStream* out) const;
int16_t value;
uint16_t label;
};
uint32_t version;
uint16_t numFeat;
uint16_t reserved;
uint32_t reserved2;
std::vector<FeatureDefn> features;
std::vector<FeatureSettingDefn> featSettings;
std::unordered_set<uint32_t> feature_ids;
};
} // namespace ots
#endif // OTS_FEAT_H_
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