1 /* 2 * Copyright (C) 2010 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #include "config.h" 27 #include "modules/device_orientation/DeviceMotionEvent.h" 28 29 #include "modules/device_orientation/DeviceAcceleration.h" 30 #include "modules/device_orientation/DeviceMotionData.h" 31 #include "modules/device_orientation/DeviceRotationRate.h" 32 #include "core/dom/EventNames.h" 33 34 namespace WebCore { 35 36 DeviceMotionEvent::~DeviceMotionEvent() 37 { 38 } 39 40 DeviceMotionEvent::DeviceMotionEvent() 41 : m_deviceMotionData(DeviceMotionData::create()) 42 { 43 ScriptWrappable::init(this); 44 } 45 46 DeviceMotionEvent::DeviceMotionEvent(const AtomicString& eventType, DeviceMotionData* deviceMotionData) 47 : Event(eventType, false, false) // Can't bubble, not cancelable 48 , m_deviceMotionData(deviceMotionData) 49 { 50 ScriptWrappable::init(this); 51 } 52 53 void DeviceMotionEvent::initDeviceMotionEvent(const AtomicString& type, bool bubbles, bool cancelable, DeviceMotionData* deviceMotionData) 54 { 55 if (dispatched()) 56 return; 57 58 initEvent(type, bubbles, cancelable); 59 m_deviceMotionData = deviceMotionData; 60 61 m_acceleration.clear(); 62 m_accelerationIncludingGravity.clear(); 63 m_rotationRate.clear(); 64 } 65 66 DeviceAcceleration* DeviceMotionEvent::acceleration() 67 { 68 if (!m_deviceMotionData->acceleration()) 69 return 0; 70 71 if (!m_acceleration) 72 m_acceleration = DeviceAcceleration::create(m_deviceMotionData->acceleration()); 73 74 return m_acceleration.get(); 75 } 76 77 DeviceAcceleration* DeviceMotionEvent::accelerationIncludingGravity() 78 { 79 if (!m_deviceMotionData->accelerationIncludingGravity()) 80 return 0; 81 82 if (!m_accelerationIncludingGravity) 83 m_accelerationIncludingGravity = DeviceAcceleration::create(m_deviceMotionData->accelerationIncludingGravity()); 84 85 return m_accelerationIncludingGravity.get(); 86 } 87 88 DeviceRotationRate* DeviceMotionEvent::rotationRate() 89 { 90 if (!m_deviceMotionData->rotationRate()) 91 return 0; 92 93 if (!m_rotationRate) 94 m_rotationRate = DeviceRotationRate::create(m_deviceMotionData->rotationRate()); 95 96 return m_rotationRate.get(); 97 } 98 99 double DeviceMotionEvent::interval(bool& isNull) const 100 { 101 if (m_deviceMotionData->canProvideInterval()) 102 return m_deviceMotionData->interval(); 103 104 isNull = true; 105 return 0; 106 } 107 108 const AtomicString& DeviceMotionEvent::interfaceName() const 109 { 110 return eventNames().interfaceForDeviceMotionEvent; 111 } 112 113 } // namespace WebCore 114