src/ui/events/ozone/evdev/event_converter_evdev.h

   1 // Copyright 2014 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_EVDEV_EVENT_CONVERTER_EVDEV_H_
   6 #define UI_EVENTS_OZONE_EVDEV_EVENT_CONVERTER_EVDEV_H_
   7
   8 #include "base/callback.h"
   9 #include "base/files/file_path.h"
  10 #include "base/message_loop/message_loop.h"
  11 #include "ui/events/ozone/evdev/events_ozone_evdev_export.h"
  12
  13 namespace ui {
  14
  15 class Event;
  16
  17 typedef base::Callback<void(Event*)> EventDispatchCallback;
  18
  19 class EVENTS_OZONE_EVDEV_EXPORT EventConverterEvdev
  20     : public base::MessagePumpLibevent::Watcher {
  21  public:
  22   EventConverterEvdev(int fd, const base::FilePath& path);
  23   virtual ~EventConverterEvdev();
  24
  25   // Start reading events.
  26   void Start();
  27
  28   // Stop reading events.
  29   void Stop();
  30
  31  protected:
  32   // base::MessagePumpLibevent::Watcher:
  33   virtual void OnFileCanWriteWithoutBlocking(int fd) OVERRIDE;
  34
  35   // File descriptor to read.
  36   int fd_;
  37
  38   // Path to input device.
  39   base::FilePath path_;
  40
  41   // Controller for watching the input fd.
  42   base::MessagePumpLibevent::FileDescriptorWatcher controller_;
  43
  44  private:
  45   DISALLOW_COPY_AND_ASSIGN(EventConverterEvdev);
  46 };
  47
  48 }  // namespace ui
  49
  50 #endif  // UI_EVENTS_OZONE_EVDEV_EVENT_CONVERTER_EVDEV_H_