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| 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 | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "content/browser/renderer_host/input/synthetic_gesture_controller_new.h
" | |
| 6 | |
| 7 #include "base/debug/trace_event.h" | |
| 8 #include "content/browser/renderer_host/input/synthetic_gesture_target.h" | |
| 9 #include "content/common/input/synthetic_smooth_scroll_gesture_params.h" | |
| 10 #include "content/common/input_messages.h" | |
| 11 #include "content/public/browser/render_widget_host.h" | |
| 12 | |
| 13 namespace content { | |
| 14 | |
| 15 SyntheticGestureControllerNew::SyntheticGestureControllerNew( | |
| 16 scoped_ptr<SyntheticGestureTarget> gesture_target) | |
| 17 : gesture_target_(gesture_target.Pass()) {} | |
| 18 | |
| 19 SyntheticGestureControllerNew::~SyntheticGestureControllerNew() {} | |
| 20 | |
| 21 void SyntheticGestureControllerNew::QueueSyntheticGesture( | |
| 22 scoped_ptr<SyntheticGestureNew> synthetic_gesture) { | |
| 23 DCHECK(synthetic_gesture); | |
| 24 | |
| 25 pending_gesture_queue_.push_back(synthetic_gesture.release()); | |
| 26 | |
| 27 // Start forwarding input events if the queue was previously empty. | |
| 28 if (pending_gesture_queue_.size() == 1) | |
| 29 StartGesture(*pending_gesture_queue_.front()); | |
| 30 } | |
| 31 | |
| 32 void SyntheticGestureControllerNew::Flush(base::TimeTicks timestamp) { | |
| 33 if (pending_gesture_queue_.empty()) | |
| 34 return; | |
| 35 | |
| 36 if (last_tick_time_.is_null()) { | |
| 37 last_tick_time_ = timestamp; | |
| 38 gesture_target_->SetNeedsFlush(); | |
| 39 return; | |
| 40 } | |
| 41 | |
| 42 base::TimeDelta interval = timestamp - last_tick_time_; | |
| 43 last_tick_time_ = timestamp; | |
| 44 SyntheticGestureNew::Result result = | |
| 45 pending_gesture_queue_.front()->ForwardInputEvents(interval, | |
| 46 gesture_target_.get()); | |
| 47 | |
| 48 if (result == SyntheticGestureNew::GESTURE_RUNNING) { | |
| 49 gesture_target_->SetNeedsFlush(); | |
| 50 return; | |
| 51 } | |
| 52 | |
| 53 StopGesture(*pending_gesture_queue_.front(), result); | |
| 54 pending_gesture_queue_.erase(pending_gesture_queue_.begin()); | |
| 55 | |
| 56 if (!pending_gesture_queue_.empty()) { | |
| 57 StartGesture(*pending_gesture_queue_.front()); | |
| 58 } else { | |
| 59 // Reset last_tick_time_ so that we don't use an old value when a new | |
| 60 // gestures is queued. | |
| 61 last_tick_time_ = base::TimeTicks(); | |
| 62 } | |
| 63 } | |
| 64 | |
| 65 void SyntheticGestureControllerNew::StartGesture( | |
| 66 const SyntheticGestureNew& gesture) { | |
| 67 TRACE_EVENT_ASYNC_BEGIN0("benchmark", "SyntheticGestureController::running", | |
| 68 &gesture); | |
| 69 gesture_target_->SetNeedsFlush(); | |
| 70 } | |
| 71 | |
| 72 void SyntheticGestureControllerNew::StopGesture( | |
| 73 const SyntheticGestureNew& gesture, SyntheticGestureNew::Result result) { | |
| 74 DCHECK_NE(result, SyntheticGestureNew::GESTURE_RUNNING); | |
| 75 TRACE_EVENT_ASYNC_END0("benchmark", "SyntheticGestureController::running", | |
| 76 &gesture); | |
| 77 | |
| 78 gesture_target_->OnSyntheticGestureCompleted(result); | |
| 79 } | |
| 80 | |
| 81 } // namespace content | |
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Chromium Code Reviews
Issue 62443007:
Replace old with new synthetic gesture framework. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master