vsync_waiter.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_PLATFORM_FUCHSIA_FLUTTER_VSYNC_WAITER_H_
#define FLUTTER_SHELL_PLATFORM_FUCHSIA_FLUTTER_VSYNC_WAITER_H_
 
#include <lib/async/cpp/wait.h>
 
#include "flutter/fml/macros.h"
#include "flutter/fml/memory/weak_ptr.h"
#include "flutter/fml/time/time_delta.h"
#include "flutter/fml/time/time_point.h"
#include "flutter/shell/common/vsync_waiter.h"
#include "flutter_runner_product_configuration.h"
 
namespace flutter_runner {
 
using FireCallbackCallback =
    std::function<void(fml::TimePoint, fml::TimePoint)>;
 
using AwaitVsyncCallback = std::function<void(FireCallbackCallback)>;
 
using AwaitVsyncForSecondaryCallbackCallback =
    std::function<void(FireCallbackCallback)>;
 
class VsyncWaiter final : public flutter::VsyncWaiter {
 public:
  VsyncWaiter(AwaitVsyncCallback await_vsync_callback,
              AwaitVsyncForSecondaryCallbackCallback
                  await_vsync_for_secondary_callback_callback,
              flutter::TaskRunners task_runners);
 
  ~VsyncWaiter() override;
 
 private:
  // |flutter::VsyncWaiter|
  void AwaitVSync() override;
 
  // |flutter::VsyncWaiter|
  void AwaitVSyncForSecondaryCallback() override;
 
  FireCallbackCallback fire_callback_callback_;
 
  AwaitVsyncCallback await_vsync_callback_;
  AwaitVsyncForSecondaryCallbackCallback
      await_vsync_for_secondary_callback_callback_;
 
  fml::WeakPtr<VsyncWaiter> weak_ui_;
  std::unique_ptr<fml::WeakPtrFactory<VsyncWaiter>> weak_factory_ui_;
  fml::WeakPtrFactory<VsyncWaiter> weak_factory_;
 
  FML_DISALLOW_COPY_AND_ASSIGN(VsyncWaiter);
};
 
}  // namespace flutter_runner
 
#endif  // FLUTTER_SHELL_PLATFORM_FUCHSIA_FLUTTER_VSYNC_WAITER_H_