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| 1 // Copyright 2011 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 #ifndef BLIMP_CLIENT_FEATURE_COMPOSITOR_BLIMP_INPUT_HANDLER_WRAPPER_H_ | |
| 6 #define BLIMP_CLIENT_FEATURE_COMPOSITOR_BLIMP_INPUT_HANDLER_WRAPPER_H_ | |
| 7 | |
| 8 #include "base/macros.h" | |
| 9 #include "base/single_thread_task_runner.h" | |
| 10 #include "base/threading/thread_checker.h" | |
| 11 #include "ui/events/blink/input_handler_proxy.h" | |
| 12 #include "ui/events/blink/input_handler_proxy_client.h" | |
| 13 | |
| 14 namespace blimp { | |
| 15 namespace client { | |
| 16 | |
| 17 class BlimpInputManager; | |
| 18 | |
| 19 // The BlimpInputHandlerWrapper isolates all input handling processing done on | |
| 20 // the compositor thread from the BlimpInputManager. It takes web gesture events | |
| 21 // from the BlimpInputManager and sends them to the ui::InputHandlerProxy. | |
| 22 // The class is created and lives on the compositor thread. | |
| 23 class BlimpInputHandlerWrapper : public ui::InputHandlerProxyClient { | |
| 24 public: | |
| 25 BlimpInputHandlerWrapper( | |
| 26 scoped_refptr<base::SingleThreadTaskRunner> main_task_runner, | |
| 27 const base::WeakPtr<BlimpInputManager> input_manager_weak_ptr, | |
| 28 cc::InputHandler* input_handler); | |
| 29 | |
| 30 ~BlimpInputHandlerWrapper() override; | |
| 31 | |
| 32 // Called by the BlimpInputManager to process a web gesture event. This will | |
| 33 // call BlimpInputManager::HandleWebGestureEvent with the result on the main | |
| 34 // thread. | |
| 35 void HandleWebGestureEvent(const blink::WebGestureEvent& gesture_event); | |
| 36 | |
| 37 private: | |
| 38 // InputHandlerProxyClient implementation. | |
| 39 void WillShutdown() override; | |
| 40 void TransferActiveWheelFlingAnimation( | |
| 41 const blink::WebActiveWheelFlingParameters& params) override; | |
| 42 blink::WebGestureCurve* CreateFlingAnimationCurve( | |
| 43 blink::WebGestureDevice device_source, | |
| 44 const blink::WebFloatPoint& velocity, | |
| 45 const blink::WebSize& cumulative_scroll) override; | |
| 46 void DidOverscroll(const gfx::Vector2dF& accumulated_overscroll, | |
| 47 const gfx::Vector2dF& latest_overscroll_delta, | |
| 48 const gfx::Vector2dF& current_fling_velocity, | |
| 49 const gfx::PointF& causal_event_viewport_point) override; | |
| 50 void DidStartFlinging() override; | |
| 51 void DidStopFlinging() override; | |
| 52 void DidAnimateForInput() override; | |
| 53 | |
| 54 base::ThreadChecker compositor_thread_checker_; | |
| 55 | |
| 56 scoped_refptr<base::SingleThreadTaskRunner> main_task_runner_; | |
| 57 | |
| 58 // Used to queue calls to the BlimpInputManager to be run on the main | |
| 59 // thread. This ensures that any tasks queued are abandoned after the | |
| 60 // BlimpInputManager is destroyed. | |
| 61 base::WeakPtr<BlimpInputManager> input_manager_weak_ptr_; | |
| 62 | |
| 63 std::unique_ptr<ui::InputHandlerProxy> input_handler_proxy_; | |
| 64 | |
| 65 DISALLOW_COPY_AND_ASSIGN(BlimpInputHandlerWrapper); | |
| 66 }; | |
| 67 | |
| 68 } // namespace client | |
| 69 } // namespace blimp | |
| 70 | |
| 71 #endif // BLIMP_CLIENT_FEATURE_COMPOSITOR_BLIMP_INPUT_HANDLER_WRAPPER_H_ | |
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