1f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)// Copyright 2013 The Chromium Authors. All rights reserved. 2f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 3f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)// found in the LICENSE file. 4f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 5f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)#include "content/browser/renderer_host/input/synthetic_gesture_controller.h" 6f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 7f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)#include "base/debug/trace_event.h" 8f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)#include "content/browser/renderer_host/input/synthetic_gesture_target.h" 9f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)#include "content/common/input/synthetic_smooth_scroll_gesture_params.h" 10f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)#include "content/common/input_messages.h" 11f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)#include "content/public/browser/render_widget_host.h" 12f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 13f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)namespace content { 14f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 15f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)SyntheticGestureController::SyntheticGestureController( 16f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) scoped_ptr<SyntheticGestureTarget> gesture_target) 17f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) : gesture_target_(gesture_target.Pass()) {} 18f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 19f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)SyntheticGestureController::~SyntheticGestureController() {} 20f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 21f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)void SyntheticGestureController::QueueSyntheticGesture( 22a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) scoped_ptr<SyntheticGesture> synthetic_gesture, 23a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) const OnGestureCompleteCallback& completion_callback) { 24f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) DCHECK(synthetic_gesture); 25f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 26a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) bool was_empty = pending_gesture_queue_.IsEmpty(); 27f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 28a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) pending_gesture_queue_.Push(synthetic_gesture.Pass(), completion_callback); 29a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) 30a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) if (was_empty) 31a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) StartGesture(*pending_gesture_queue_.FrontGesture()); 32f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)} 33f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 34f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)void SyntheticGestureController::Flush(base::TimeTicks timestamp) { 35a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) TRACE_EVENT0("input", "SyntheticGestureController::Flush"); 36a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) if (pending_gesture_queue_.IsEmpty()) 37f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) return; 38f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 39c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch if (pending_gesture_result_) 40c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch return; 41c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch 42a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) SyntheticGesture* gesture = pending_gesture_queue_.FrontGesture(); 43c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch SyntheticGesture::Result result = 44c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch gesture->ForwardInputEvents(timestamp, gesture_target_.get()); 45f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 46f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) if (result == SyntheticGesture::GESTURE_RUNNING) { 47f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) gesture_target_->SetNeedsFlush(); 48f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) return; 49f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) } 50f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 51c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch // It's possible that all events generated by the gesture have been fully 52c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch // dispatched at this point, in which case |OnDidFlushInput()| was called 53c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch // before |pending_gesture_result_| was initialized. Requesting another flush 54c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch // will trigger the necessary gesture-ending call to |OnDidFlushInput()|. 55c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch pending_gesture_result_.reset(new SyntheticGesture::Result(result)); 56c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch gesture_target_->SetNeedsFlush(); 57c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch} 58c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch 59c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdochvoid SyntheticGestureController::OnDidFlushInput() { 60c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch if (!pending_gesture_result_) 61c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch return; 62c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch 63c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch DCHECK(!pending_gesture_queue_.IsEmpty()); 64c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch StopGesture(*pending_gesture_queue_.FrontGesture(), 65c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch pending_gesture_queue_.FrontCallback(), 66c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch *pending_gesture_result_.Pass()); 67a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) pending_gesture_queue_.Pop(); 68f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 69a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) if (!pending_gesture_queue_.IsEmpty()) 70a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) StartGesture(*pending_gesture_queue_.FrontGesture()); 71f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)} 72f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 73f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)void SyntheticGestureController::StartGesture(const SyntheticGesture& gesture) { 74a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) TRACE_EVENT_ASYNC_BEGIN0("input,benchmark", 75a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) "SyntheticGestureController::running", 76f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) &gesture); 77f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) gesture_target_->SetNeedsFlush(); 78f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)} 79f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 80f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)void SyntheticGestureController::StopGesture( 81a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) const SyntheticGesture& gesture, 82a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) const OnGestureCompleteCallback& completion_callback, 83a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) SyntheticGesture::Result result) { 84f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) DCHECK_NE(result, SyntheticGesture::GESTURE_RUNNING); 85a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) TRACE_EVENT_ASYNC_END0("input,benchmark", 86a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) "SyntheticGestureController::running", 87f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) &gesture); 88f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 89a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) completion_callback.Run(result); 90a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)} 91a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) 92a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)SyntheticGestureController::GestureAndCallbackQueue::GestureAndCallbackQueue() { 93a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)} 94a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) 95a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)SyntheticGestureController::GestureAndCallbackQueue:: 96a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) ~GestureAndCallbackQueue() { 97f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)} 98f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 99f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)} // namespace content 100