text: /*
   * Copyright (C) 2010 Apple Inc. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *  * Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *  * Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
   * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
   * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #include "config.h"
  #include "modules/device_orientation/DeviceMotionData.h"
  #include "public/platform/WebDeviceMotionData.h"
  
  namespace blink {
  
  DeviceMotionData::Acceleration* DeviceMotionData::Acceleration::create(
      bool canProvideX, double x, bool canProvideY, double y, bool canProvideZ, double z)
  {
      return new DeviceMotionData::Acceleration(canProvideX, x, canProvideY, y, canProvideZ, z);
  }
  
  DeviceMotionData::Acceleration::Acceleration(bool canProvideX, double x, bool canProvideY, double y, bool canProvideZ, double z)
      : m_x(x)
      , m_y(y)
      , m_z(z)
      , m_canProvideX(canProvideX)
      , m_canProvideY(canProvideY)
      , m_canProvideZ(canProvideZ)
  
  {
  }
  
  DeviceMotionData::RotationRate* DeviceMotionData::RotationRate::create(
      bool canProvideAlpha, double alpha, bool canProvideBeta, double beta, bool canProvideGamma, double gamma)
  {
      return new DeviceMotionData::RotationRate(canProvideAlpha, alpha, canProvideBeta, beta, canProvideGamma, gamma);
  }
  
  DeviceMotionData::RotationRate::RotationRate(bool canProvideAlpha, double alpha, bool canProvideBeta, double beta, bool canProvideGamma, double gamma)
      : m_alpha(alpha)
      , m_beta(beta)
      , m_gamma(gamma)
      , m_canProvideAlpha(canProvideAlpha)
      , m_canProvideBeta(canProvideBeta)
      , m_canProvideGamma(canProvideGamma)
  {
  }
  
  DeviceMotionData* DeviceMotionData::create()
  {
      return new DeviceMotionData;
  }
  
  DeviceMotionData* DeviceMotionData::create(
      Acceleration* acceleration,
      Acceleration* accelerationIncludingGravity,
      RotationRate* rotationRate,
      bool canProvideInterval,
      double interval)
  {
      return new DeviceMotionData(acceleration, accelerationIncludingGravity, rotationRate, canProvideInterval, interval);
  }
  
  DeviceMotionData* DeviceMotionData::create(const WebDeviceMotionData& data)
  {
      return DeviceMotionData::create(
          DeviceMotionData::Acceleration::create(
              data.hasAccelerationX, data.accelerationX,
              data.hasAccelerationY, data.accelerationY,
              data.hasAccelerationZ, data.accelerationZ),
          DeviceMotionData::Acceleration::create(
              data.hasAccelerationIncludingGravityX, data.accelerationIncludingGravityX,
              data.hasAccelerationIncludingGravityY, data.accelerationIncludingGravityY,
              data.hasAccelerationIncludingGravityZ, data.accelerationIncludingGravityZ),
          DeviceMotionData::RotationRate::create(
              data.hasRotationRateAlpha, data.rotationRateAlpha,
              data.hasRotationRateBeta, data.rotationRateBeta,
              data.hasRotationRateGamma, data.rotationRateGamma),
          true, data.interval);
  }
  
  DeviceMotionData::DeviceMotionData()
      : m_canProvideInterval(false)
      , m_interval(0)
  {
  }
  
  DeviceMotionData::DeviceMotionData(
      Acceleration* acceleration,
      Acceleration* accelerationIncludingGravity,
      RotationRate* rotationRate,
      bool canProvideInterval,
      double interval)
      : m_acceleration(acceleration)
      , m_accelerationIncludingGravity(accelerationIncludingGravity)
      , m_rotationRate(rotationRate)
      , m_canProvideInterval(canProvideInterval)
      , m_interval(interval)
  {
  }
  
  void DeviceMotionData::trace(Visitor* visitor)
  {
      visitor->trace(m_acceleration);
      visitor->trace(m_accelerationIncludingGravity);
      visitor->trace(m_rotationRate);
  }
  
  bool DeviceMotionData::canProvideEventData() const
  {
      const bool hasAcceleration = m_acceleration && (m_acceleration->canProvideX() || m_acceleration->canProvideY() || m_acceleration->canProvideZ());
      const bool hasAccelerationIncludingGravity = m_accelerationIncludingGravity && (m_accelerationIncludingGravity->canProvideX() || m_accelerationIncludingGravity->canProvideY() || m_accelerationIncludingGravity->canProvideZ());
      const bool hasRotationRate = m_rotationRate && (m_rotationRate->canProvideAlpha() || m_rotationRate->canProvideBeta() || m_rotationRate->canProvideGamma());
  
      return hasAcceleration || hasAccelerationIncludingGravity || hasRotationRate;
  }
  
  } // namespace blink
  