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| 1 // Copyright 2015 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_CORE_INPUT_BLIMP_INPUT_MANAGER_H_ | |
| 6 #define BLIMP_CLIENT_CORE_INPUT_BLIMP_INPUT_MANAGER_H_ | |
| 7 | |
| 8 #include <memory> | |
| 9 | |
| 10 #include "base/macros.h" | |
| 11 #include "base/memory/weak_ptr.h" | |
| 12 #include "base/single_thread_task_runner.h" | |
| 13 #include "base/synchronization/waitable_event.h" | |
| 14 #include "base/threading/thread_checker.h" | |
| 15 #include "third_party/WebKit/public/platform/WebGestureEvent.h" | |
| 16 #include "third_party/WebKit/public/platform/WebInputEvent.h" | |
| 17 #include "ui/events/gesture_detection/filtered_gesture_provider.h" | |
| 18 #include "ui/events/gesture_detection/motion_event.h" | |
| 19 | |
| 20 namespace cc { | |
| 21 class InputHandler; | |
| 22 } // namespace cc | |
| 23 | |
| 24 namespace blimp { | |
| 25 namespace client { | |
| 26 class BlimpInputHandlerWrapper; | |
| 27 | |
| 28 class BlimpInputManagerClient { | |
| 29 public: | |
| 30 virtual void SendWebGestureEvent( | |
| 31 const blink::WebGestureEvent& gesture_event) = 0; | |
| 32 }; | |
| 33 | |
| 34 // The BlimpInputManager handles input events for a specific web widget. The | |
| 35 // class processes ui::events to generate web gesture events which are forwarded | |
| 36 // to the compositor to be handled on the compositor thread. If the event can | |
| 37 // not be handled locally by the compositor, it is given to the | |
| 38 // BlimpInputManagerClient to be sent to the engine. | |
| 39 // The class is created on and lives on the main thread. | |
| 40 class BlimpInputManager : public ui::GestureProviderClient { | |
| 41 public: | |
| 42 static std::unique_ptr<BlimpInputManager> Create( | |
| 43 BlimpInputManagerClient* client, | |
| 44 scoped_refptr<base::SingleThreadTaskRunner> main_task_runner, | |
| 45 scoped_refptr<base::SingleThreadTaskRunner> compositor_task_runner, | |
| 46 const base::WeakPtr<cc::InputHandler>& input_handler); | |
| 47 | |
| 48 ~BlimpInputManager() override; | |
| 49 | |
| 50 // Called to process a ui::MotionEvent. Returns true if the event was | |
| 51 // successfully processed. | |
| 52 bool OnTouchEvent(const ui::MotionEvent& motion_event); | |
| 53 | |
| 54 // Called by the BlimpInputHandlerWrapper after an input event was handled on | |
| 55 // the compositor thread. | |
| 56 // |consumed| is false if the event was not handled by the compositor and | |
| 57 // should be sent to the engine. | |
| 58 void DidHandleWebGestureEvent(const blink::WebGestureEvent& gesture_event, | |
| 59 bool consumed); | |
| 60 | |
| 61 void OnInputHandlerWrapperInitialized( | |
| 62 base::WeakPtr<BlimpInputHandlerWrapper> input_handler_wrapper_weak_ptr); | |
| 63 | |
| 64 private: | |
| 65 BlimpInputManager( | |
| 66 BlimpInputManagerClient* client, | |
| 67 scoped_refptr<base::SingleThreadTaskRunner> main_task_runner, | |
| 68 scoped_refptr<base::SingleThreadTaskRunner> compositor_task_runner, | |
| 69 const base::WeakPtr<cc::InputHandler>& input_handler); | |
| 70 | |
| 71 static void CreateInputHandlerWrapperOnCompositorThread( | |
| 72 scoped_refptr<base::SingleThreadTaskRunner> main_task_runner, | |
| 73 const base::WeakPtr<BlimpInputManager>& input_manager_weak_ptr, | |
| 74 const base::WeakPtr<cc::InputHandler>& input_handler); | |
| 75 | |
| 76 // ui::GestureProviderClient implementation. | |
| 77 void OnGestureEvent(const ui::GestureEventData& gesture) override; | |
| 78 | |
| 79 BlimpInputManagerClient* client_; | |
| 80 | |
| 81 ui::FilteredGestureProvider gesture_provider_; | |
| 82 | |
| 83 scoped_refptr<base::SingleThreadTaskRunner> compositor_task_runner_; | |
| 84 | |
| 85 std::unique_ptr<BlimpInputHandlerWrapper> input_handler_wrapper_; | |
| 86 | |
| 87 // WeakPtr used to post tasks to the wrapper on the compositor thread. | |
| 88 base::WeakPtr<BlimpInputHandlerWrapper> input_handler_wrapper_weak_ptr_; | |
| 89 | |
| 90 base::ThreadChecker thread_checker_; | |
| 91 | |
| 92 base::WeakPtrFactory<BlimpInputManager> weak_factory_; | |
| 93 | |
| 94 DISALLOW_COPY_AND_ASSIGN(BlimpInputManager); | |
| 95 }; | |
| 96 | |
| 97 } // namespace client | |
| 98 } // namespace blimp | |
| 99 | |
| 100 #endif // BLIMP_CLIENT_CORE_INPUT_BLIMP_INPUT_MANAGER_H_ | |
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