// Copyright (c) 2018 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_FVAR_H_

#define OTS_FVAR_H_

#include <vector>

#include "ots.h"

namespace ots {

// -----------------------------------------------------------------------------

// OpenTypeFVAR Interface

// -----------------------------------------------------------------------------

class OpenTypeFVAR : public Table {

 public:

  explicit OpenTypeFVAR(Font* font, uint32_t tag)

      : Table(font, tag, tag) { }

  bool Parse(const uint8_t* data, size_t length);

  bool Serialize(OTSStream* out);

  uint16_t AxisCount() const { return axisCount; }

 private:

  uint16_t majorVersion;

  uint16_t minorVersion;

  uint16_t axesArrayOffset;

  uint16_t reserved;

  uint16_t axisCount;

  uint16_t axisSize;

  uint16_t instanceCount;

  uint16_t instanceSize;

  typedef int32_t Fixed; /* 16.16 fixed-point value */

  struct VariationAxisRecord {

    uint32_t axisTag;

    Fixed    minValue;

    Fixed    defaultValue;

    Fixed    maxValue;

    uint16_t flags;

    uint16_t axisNameID;

  };

  std::vector<VariationAxisRecord> axes;

  struct InstanceRecord {

    uint16_t subfamilyNameID;

    uint16_t flags;

    std::vector<Fixed> coordinates;

    uint16_t postScriptNameID; // optional

  };

  std::vector<InstanceRecord> instances;

  bool instancesHavePostScriptNameID;

};

}  // namespace ots

#endif  // OTS_FVAR_H_