gecko-dev/dom/events/DeviceMotionEvent.cpp

/* -*- 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/. */

#include "mozilla/dom/DeviceMotionEvent.h"
#include "nsContentUtils.h"

namespace mozilla {
namespace dom {

/******************************************************************************
 * DeviceMotionEvent
 *****************************************************************************/

NS_IMPL_CYCLE_COLLECTION_INHERITED(DeviceMotionEvent, Event,
                                   mAcceleration,
                                   mAccelerationIncludingGravity,
                                   mRotationRate)

NS_IMPL_ADDREF_INHERITED(DeviceMotionEvent, Event)
NS_IMPL_RELEASE_INHERITED(DeviceMotionEvent, Event)

NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(DeviceMotionEvent)
NS_INTERFACE_MAP_END_INHERITING(Event)

void
DeviceMotionEvent::InitDeviceMotionEvent(
                     const nsAString& aType,
                     bool aCanBubble,
                     bool aCancelable,
                     const DeviceAccelerationInit& aAcceleration,
                     const DeviceAccelerationInit& aAccelIncludingGravity,
                     const DeviceRotationRateInit& aRotationRate,
                     const Nullable<double>& aInterval)
{
  InitDeviceMotionEvent(aType, aCanBubble, aCancelable, aAcceleration,
                        aAccelIncludingGravity, aRotationRate, aInterval,
                        Nullable<uint64_t>());
}

void
DeviceMotionEvent::InitDeviceMotionEvent(
                     const nsAString& aType,
                     bool aCanBubble,
                     bool aCancelable,
                     const DeviceAccelerationInit& aAcceleration,
                     const DeviceAccelerationInit& aAccelIncludingGravity,
                     const DeviceRotationRateInit& aRotationRate,
                     const Nullable<double>& aInterval,
                     const Nullable<uint64_t>& aTimeStamp)
{
  NS_ENSURE_TRUE_VOID(!mEvent->mFlags.mIsBeingDispatched);

  Event::InitEvent(aType, aCanBubble, aCancelable);

  mAcceleration = new DeviceAcceleration(this, aAcceleration.mX,
                                         aAcceleration.mY,
                                         aAcceleration.mZ);

  mAccelerationIncludingGravity =
    new DeviceAcceleration(this, aAccelIncludingGravity.mX,
                           aAccelIncludingGravity.mY,
                           aAccelIncludingGravity.mZ);

  mRotationRate = new DeviceRotationRate(this, aRotationRate.mAlpha,
                                         aRotationRate.mBeta,
                                         aRotationRate.mGamma);
  mInterval = aInterval;
  if (!aTimeStamp.IsNull()) {
    mEvent->mTime = aTimeStamp.Value();

    static mozilla::TimeStamp sInitialNow = mozilla::TimeStamp::Now();
    static uint64_t sInitialEventTime = aTimeStamp.Value();
    mEvent->mTimeStamp = sInitialNow + mozilla::TimeDuration::FromMicroseconds(
      aTimeStamp.Value() - sInitialEventTime);
  }
}

already_AddRefed<DeviceMotionEvent>
DeviceMotionEvent::Constructor(const GlobalObject& aGlobal,
                               const nsAString& aType,
                               const DeviceMotionEventInit& aEventInitDict,
                               ErrorResult& aRv)
{
  nsCOMPtr<EventTarget> t = do_QueryInterface(aGlobal.GetAsSupports());
  RefPtr<DeviceMotionEvent> e = new DeviceMotionEvent(t, nullptr, nullptr);
  e->InitEvent(aType, aEventInitDict.mBubbles, aEventInitDict.mCancelable);
  bool trusted = e->Init(t);

  e->mAcceleration = new DeviceAcceleration(e,
    aEventInitDict.mAcceleration.mX,
    aEventInitDict.mAcceleration.mY,
    aEventInitDict.mAcceleration.mZ);

  e->mAccelerationIncludingGravity = new DeviceAcceleration(e,
    aEventInitDict.mAccelerationIncludingGravity.mX,
    aEventInitDict.mAccelerationIncludingGravity.mY,
    aEventInitDict.mAccelerationIncludingGravity.mZ);

  e->mRotationRate = new DeviceRotationRate(e,
    aEventInitDict.mRotationRate.mAlpha,
    aEventInitDict.mRotationRate.mBeta,
    aEventInitDict.mRotationRate.mGamma);

  e->mInterval = aEventInitDict.mInterval;
  e->SetTrusted(trusted);
  e->SetComposed(aEventInitDict.mComposed);
  return e.forget();
}

/******************************************************************************
 * DeviceAcceleration
 *****************************************************************************/

NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(DeviceAcceleration, mOwner)

NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(DeviceAcceleration, AddRef)
NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(DeviceAcceleration, Release)

DeviceAcceleration::DeviceAcceleration(DeviceMotionEvent* aOwner,
                                       const Nullable<double>& aX,
                                       const Nullable<double>& aY,
                                       const Nullable<double>& aZ)
  : mOwner(aOwner)
  , mX(aX)
  , mY(aY)
  , mZ(aZ)
{
}

DeviceAcceleration::~DeviceAcceleration()
{
}

/******************************************************************************
 * DeviceRotationRate
 *****************************************************************************/

NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(DeviceRotationRate, mOwner)

NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(DeviceRotationRate, AddRef)
NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(DeviceRotationRate, Release)

DeviceRotationRate::DeviceRotationRate(DeviceMotionEvent* aOwner,
                                       const Nullable<double>& aAlpha,
                                       const Nullable<double>& aBeta,
                                       const Nullable<double>& aGamma)
  : mOwner(aOwner)
  , mAlpha(aAlpha)
  , mBeta(aBeta)
  , mGamma(aGamma)
{
}

DeviceRotationRate::~DeviceRotationRate()
{
}

} // namespace dom
} // namespace mozilla

using namespace mozilla;
using namespace mozilla::dom;

already_AddRefed<DeviceMotionEvent>
NS_NewDOMDeviceMotionEvent(EventTarget* aOwner,
                           nsPresContext* aPresContext,
                           WidgetEvent* aEvent)
{
  RefPtr<DeviceMotionEvent> it =
    new DeviceMotionEvent(aOwner, aPresContext, aEvent);
  return it.forget();
}