/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef GFX_VR_DISPLAY_CLIENT_H

#define GFX_VR_DISPLAY_CLIENT_H

#include "nsIScreen.h"

#include "nsCOMPtr.h"

#include "mozilla/RefPtr.h"

#include "mozilla/dom/VRDisplayBinding.h"

#include "gfxVR.h"

namespace mozilla {

namespace gfx {

class VRDisplayPresentation;

class VRManagerChild;

class VRDisplayClient

{

public:

  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(VRDisplayClient)

  explicit VRDisplayClient(const VRDisplayInfo& aDisplayInfo);

  void UpdateDisplayInfo(const VRDisplayInfo& aDisplayInfo);

  void UpdateSubmitFrameResult(const VRSubmitFrameResultInfo& aResult);

  const VRDisplayInfo& GetDisplayInfo() const { return mDisplayInfo; }

  virtual VRHMDSensorState GetSensorState();

  void GetSubmitFrameResult(VRSubmitFrameResultInfo& aResult);

  virtual void ZeroSensor();

  already_AddRefed<VRDisplayPresentation> BeginPresentation(const nsTArray<dom::VRLayer>& aLayers,

                                                            uint32_t aGroup);

  void PresentationDestroyed();

  bool GetIsConnected() const;

  void NotifyDisconnected();

  void SetGroupMask(uint32_t aGroupMask);

  bool IsPresentationGenerationCurrent() const;

  void MakePresentationGenerationCurrent();

  void StartVRNavigation();

  void StopVRNavigation(const TimeDuration& aTimeout);

protected:

  virtual ~VRDisplayClient();

  void FireEvents();

  void FireGamepadEvents();

  VRDisplayInfo mDisplayInfo;

  bool bLastEventWasMounted;

  bool bLastEventWasPresenting;

  int mPresentationCount;

  uint64_t mLastEventFrameId;

  uint32_t mLastPresentingGeneration;

  // Difference between mDisplayInfo.mControllerState and mLastEventControllerState

  // determines what gamepad events to fire when updated.

  VRControllerState mLastEventControllerState[kVRControllerMaxCount];

private:

  VRSubmitFrameResultInfo mSubmitFrameResult;

};

} // namespace gfx

} // namespace mozilla

#endif /* GFX_VR_DISPLAY_CLIENT_H */