pointer_data_packet.cc

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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
#include "flutter/lib/ui/window/pointer_data_packet.h"
#include "flutter/fml/logging.h"
 
#include <cstring>
 
namespace flutter {
 
PointerDataPacket::PointerDataPacket(size_t count)
    : data_(count * sizeof(PointerData)) {}
 
PointerDataPacket::PointerDataPacket(uint8_t* data, size_t num_bytes)
    : data_(data, data + num_bytes) {}
 
PointerDataPacket::~PointerDataPacket() = default;
 
void PointerDataPacket::SetPointerData(size_t i, const PointerData& data) {
  FML_DCHECK(i < GetLength());
  memcpy(&data_[i * sizeof(PointerData)], &data, sizeof(PointerData));
}
 
PointerData PointerDataPacket::GetPointerData(size_t i) const {
  FML_DCHECK(i < GetLength());
  PointerData result;
  memcpy(&result, &data_[i * sizeof(PointerData)], sizeof(PointerData));
  return result;
}
 
size_t PointerDataPacket::GetLength() const {
  return data_.size() / sizeof(PointerData);
}
 
}  // namespace flutter