variable_refresh_rate_display.h

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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.
 
#ifndef FLUTTER_SHELL_COMMON_VARIABLE_REFRESH_RATE_DISPLAY_H_
#define FLUTTER_SHELL_COMMON_VARIABLE_REFRESH_RATE_DISPLAY_H_
 
#include <optional>
 
#include "display.h"
#include "flutter/fml/macros.h"
#include "variable_refresh_rate_reporter.h"
 
namespace flutter {
 
/// A Display where the refresh rate can change over time.
class VariableRefreshRateDisplay : public Display {
 public:
  explicit VariableRefreshRateDisplay(
      DisplayId display_id,
      const std::weak_ptr<VariableRefreshRateReporter>& refresh_rate_reporter,
      double width,
      double height,
      double device_pixel_ratio);
  ~VariableRefreshRateDisplay() = default;
 
  // |Display|
  double GetRefreshRate() const override;
 
 private:
  const std::weak_ptr<VariableRefreshRateReporter> refresh_rate_reporter_;
 
  FML_DISALLOW_COPY_AND_ASSIGN(VariableRefreshRateDisplay);
};
 
}  // namespace flutter
 
#endif  // FLUTTER_SHELL_COMMON_VARIABLE_REFRESH_RATE_DISPLAY_H_