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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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 #ifndef CONTENT_COMMON_INPUT_EVENT_WITH_LATENCY_INFO_H_ | 5 #ifndef CONTENT_COMMON_INPUT_EVENT_WITH_LATENCY_INFO_H_ |
| 6 #define CONTENT_COMMON_INPUT_EVENT_WITH_LATENCY_INFO_H_ | 6 #define CONTENT_COMMON_INPUT_EVENT_WITH_LATENCY_INFO_H_ |
| 7 | 7 |
| 8 #include "base/compiler_specific.h" | 8 #include "base/compiler_specific.h" |
| 9 #include "base/logging.h" | 9 #include "base/logging.h" |
| 10 #include "content/common/content_export.h" | 10 #include "content/common/content_export.h" |
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| 42 class EventWithLatencyInfo { | 42 class EventWithLatencyInfo { |
| 43 public: | 43 public: |
| 44 T event; | 44 T event; |
| 45 mutable ui::LatencyInfo latency; | 45 mutable ui::LatencyInfo latency; |
| 46 | 46 |
| 47 explicit EventWithLatencyInfo(const T& e) : event(e) {} | 47 explicit EventWithLatencyInfo(const T& e) : event(e) {} |
| 48 | 48 |
| 49 EventWithLatencyInfo(const T& e, const ui::LatencyInfo& l) | 49 EventWithLatencyInfo(const T& e, const ui::LatencyInfo& l) |
| 50 : event(e), latency(l) {} | 50 : event(e), latency(l) {} |
| 51 | 51 |
| 52 EventWithLatencyInfo(blink::WebInputEvent::Type type, |
| 53 int modifiers, |
| 54 double timeStampSeconds, |
| 55 const ui::LatencyInfo& l) |
| 56 : event(type, modifiers, timeStampSeconds), latency(l) {} |
| 57 |
| 52 EventWithLatencyInfo() {} | 58 EventWithLatencyInfo() {} |
| 53 | 59 |
| 54 bool CanCoalesceWith(const EventWithLatencyInfo& other) | 60 bool CanCoalesceWith(const EventWithLatencyInfo& other) |
| 55 const WARN_UNUSED_RESULT { | 61 const WARN_UNUSED_RESULT { |
| 56 if (other.event.type != event.type) | 62 if (other.event.type != event.type) |
| 57 return false; | 63 return false; |
| 58 | 64 |
| 59 DCHECK_EQ(sizeof(T), event.size); | 65 DCHECK_EQ(sizeof(T), event.size); |
| 60 DCHECK_EQ(sizeof(T), other.event.size); | 66 DCHECK_EQ(sizeof(T), other.event.size); |
| 61 | 67 |
| 62 return ui::CanCoalesce(other.event, event); | 68 return ui::CanCoalesce(other.event, event); |
| 63 } | 69 } |
| 64 | 70 |
| 65 void CoalesceWith(const EventWithLatencyInfo& other) { | 71 void CoalesceWith(const EventWithLatencyInfo& other) { |
| 66 // |other| should be a newer event than |this|. | 72 // |other| should be a newer event than |this|. |
| 67 if (other.latency.trace_id() >= 0 && latency.trace_id() >= 0) | 73 if (other.latency.trace_id() >= 0 && latency.trace_id() >= 0) |
| 68 DCHECK_GT(other.latency.trace_id(), latency.trace_id()); | 74 DCHECK_GT(other.latency.trace_id(), latency.trace_id()); |
| 69 | 75 |
| 70 // New events get coalesced into older events, and the newer timestamp | 76 // New events get coalesced into older events, and the newer timestamp |
| 71 // should always be preserved. | 77 // should always be preserved. |
| 72 const double time_stamp_seconds = other.event.timeStampSeconds; | 78 const double time_stamp_seconds = other.event.timeStampSeconds; |
| 73 ui::Coalesce(other.event, &event); | 79 ui::Coalesce(other.event, &event); |
| 74 event.timeStampSeconds = time_stamp_seconds; | 80 event.setTimeStampSeconds(time_stamp_seconds); |
| 75 | 81 |
| 76 // When coalescing two input events, we keep the oldest LatencyInfo | 82 // When coalescing two input events, we keep the oldest LatencyInfo |
| 77 // for Telemetry latency tests, since it will represent the longest | 83 // for Telemetry latency tests, since it will represent the longest |
| 78 // latency. | 84 // latency. |
| 79 other.latency = latency; | 85 other.latency = latency; |
| 80 other.latency.set_coalesced(); | 86 other.latency.set_coalesced(); |
| 81 } | 87 } |
| 82 }; | 88 }; |
| 83 | 89 |
| 84 typedef EventWithLatencyInfo<blink::WebGestureEvent> | 90 typedef EventWithLatencyInfo<blink::WebGestureEvent> |
| 85 GestureEventWithLatencyInfo; | 91 GestureEventWithLatencyInfo; |
| 86 typedef EventWithLatencyInfo<blink::WebMouseWheelEvent> | 92 typedef EventWithLatencyInfo<blink::WebMouseWheelEvent> |
| 87 MouseWheelEventWithLatencyInfo; | 93 MouseWheelEventWithLatencyInfo; |
| 88 typedef EventWithLatencyInfo<blink::WebMouseEvent> | 94 typedef EventWithLatencyInfo<blink::WebMouseEvent> |
| 89 MouseEventWithLatencyInfo; | 95 MouseEventWithLatencyInfo; |
| 90 typedef EventWithLatencyInfo<blink::WebTouchEvent> | 96 typedef EventWithLatencyInfo<blink::WebTouchEvent> |
| 91 TouchEventWithLatencyInfo; | 97 TouchEventWithLatencyInfo; |
| 92 | 98 |
| 93 } // namespace content | 99 } // namespace content |
| 94 | 100 |
| 95 #endif // CONTENT_COMMON_INPUT_EVENT_WITH_LATENCY_INFO_H_ | 101 #endif // CONTENT_COMMON_INPUT_EVENT_WITH_LATENCY_INFO_H_ |
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