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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "modules/sensor/SensorReading.h" | 5 #include "modules/sensor/SensorReading.h" |
6 | 6 |
| 7 #include "core/dom/ExecutionContext.h" |
| 8 #include "core/frame/LocalDOMWindow.h" |
| 9 #include "core/timing/DOMWindowPerformance.h" |
| 10 #include "core/timing/Performance.h" |
| 11 |
7 namespace blink { | 12 namespace blink { |
8 | 13 |
9 SensorReading::SensorReading() | 14 SensorReading::SensorReading(ExecutionContext* context) |
10 { | 15 : m_context(context) |
11 } | |
12 | |
13 SensorReading::SensorReading(bool providesTimeStamp, DOMHighResTimeStamp timeSta
mp) | |
14 : m_canProvideTimeStamp(providesTimeStamp) | |
15 , m_timeStamp(timeStamp) | |
16 { | |
17 } | |
18 | |
19 DOMHighResTimeStamp SensorReading::timeStamp(bool& isNull) | |
20 { | |
21 if (m_canProvideTimeStamp) | |
22 return m_timeStamp; | |
23 | |
24 isNull = true; | |
25 return 0; | |
26 } | |
27 | |
28 SensorReading::~SensorReading() | |
29 { | 16 { |
30 } | 17 } |
31 | 18 |
32 DEFINE_TRACE(SensorReading) | 19 DEFINE_TRACE(SensorReading) |
33 { | 20 { |
| 21 visitor->trace(m_sensorProxy); |
| 22 visitor->trace(m_context); |
| 23 } |
| 24 |
| 25 void SensorReading::attach(SensorProxy* sensorProxy) |
| 26 { |
| 27 DCHECK(sensorProxy); |
| 28 m_sensorProxy = sensorProxy; |
| 29 } |
| 30 |
| 31 void SensorReading::detach() |
| 32 { |
| 33 m_sensorProxy = nullptr; |
| 34 } |
| 35 |
| 36 DOMHighResTimeStamp SensorReading::timeStamp() const |
| 37 { |
| 38 if (!m_sensorProxy) |
| 39 return 0.0; |
| 40 |
| 41 if (!m_context) |
| 42 return 0.0; |
| 43 |
| 44 LocalDOMWindow* window = m_context->executingWindow(); |
| 45 if (!window) |
| 46 return 0.0; |
| 47 |
| 48 Performance* performance = DOMWindowPerformance::performance(*window); |
| 49 if (!performance) |
| 50 return 0.0; |
| 51 |
| 52 return performance->monotonicTimeToDOMHighResTimeStamp(m_sensorProxy->readin
g().timestamp); |
34 } | 53 } |
35 | 54 |
36 } // namespace blink | 55 } // namespace blink |
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