1 // Copyright (c) 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 #ifndef UI_EVENTS_OZONE_EVENT_CONVERTER_OZONE_H_ 6 #define UI_EVENTS_OZONE_EVENT_CONVERTER_OZONE_H_ 7 8 #include "base/memory/scoped_ptr.h" 9 #include "base/message_loop/message_pump_libevent.h" 10 #include "ui/events/events_export.h" 11 12 namespace ui { 13 class Event; 14 15 // In ozone, Chrome reads events from file descriptors created from Linux device 16 // drivers. The |MessagePumpLibevent::Watcher| parent class provides the 17 // functionality to watch a file descriptor for the arrival of new data and 18 // notify its subclasses. Device-specific event converters turn bytes read from 19 // the file descriptor into |ui::Event| instances. This class provides the 20 // functionality needed in common across all converters: dispatching the 21 // |ui::Event| to aura. 22 class EVENTS_EXPORT EventConverterOzone 23 : public base::MessagePumpLibevent::Watcher { 24 public: 25 EventConverterOzone(); 26 virtual ~EventConverterOzone(); 27 28 protected: 29 // Subclasses should use this method to post a task that will dispatch 30 // |event| from the UI message loop. This method takes ownership of 31 // |event|. |event| will be deleted at the end of the posted task. 32 virtual void DispatchEvent(scoped_ptr<ui::Event> event); 33 34 private: 35 DISALLOW_COPY_AND_ASSIGN(EventConverterOzone); 36 }; 37 38 } // namespace ui 39 40 #endif // UI_EVENTS_OZONE_EVENT_CONVERTER_OZONE_H_ 41
