nsDeviceSensors.h

/* -*- 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 nsDeviceSensors_h
#define nsDeviceSensors_h

#include "nsIDeviceSensors.h"
#include "nsCOMArray.h"
#include "nsTArray.h"
#include "nsCOMPtr.h"
#include "mozilla/dom/DeviceMotionEvent.h"
#include "mozilla/TimeStamp.h"
#include "mozilla/HalSensor.h"

class nsIDOMWindow;

namespace mozilla {
namespace dom {
class Document;
class EventTarget;
}  // namespace dom
}  // namespace mozilla

class nsDeviceSensors : public nsIDeviceSensors,
                        public mozilla::hal::ISensorObserver {
  using DeviceAccelerationInit = mozilla::dom::DeviceAccelerationInit;
  using DeviceRotationRateInit = mozilla::dom::DeviceRotationRateInit;

 public:
  NS_DECL_ISUPPORTS
  NS_DECL_NSIDEVICESENSORS

  nsDeviceSensors();

  void Notify(const mozilla::hal::SensorData& aSensorData) override;

 private:
  virtual ~nsDeviceSensors();

  // sensor -> window listener
  nsTArray<nsTArray<nsIDOMWindow*>*> mWindowListeners;

  void FireDOMLightEvent(mozilla::dom::EventTarget* aTarget, double value);

  void MaybeFireDOMUserProximityEvent(mozilla::dom::EventTarget* aTarget,
                                      double aValue, double aMax);

  void FireDOMUserProximityEvent(mozilla::dom::EventTarget* aTarget,
                                 bool aNear);

  void FireDOMOrientationEvent(mozilla::dom::EventTarget* target, double aAlpha,
                               double aBeta, double aGamma, bool aIsAbsolute);

  void FireDOMMotionEvent(mozilla::dom::Document* domDoc,
                          mozilla::dom::EventTarget* target, uint32_t type,
                          PRTime timestamp, double x, double y, double z);

  inline bool IsSensorEnabled(uint32_t aType) {
    return mWindowListeners[aType]->Length() > 0;
  }

  bool IsSensorAllowedByPref(uint32_t aType, nsIDOMWindow* aWindow);

  mozilla::TimeStamp mLastDOMMotionEventTime;
  bool mIsUserProximityNear;
  mozilla::Maybe<DeviceAccelerationInit> mLastAcceleration;
  mozilla::Maybe<DeviceAccelerationInit> mLastAccelerationIncludingGravity;
  mozilla::Maybe<DeviceRotationRateInit> mLastRotationRate;
};

#endif