ui/events/ozone/evdev/key_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_KEY_EVENT_CONVERTER_EVDEV_H_
   6 #define UI_EVENTS_OZONE_EVDEV_KEY_EVENT_CONVERTER_EVDEV_H_
   7
   8 #include "base/files/file_path.h"
   9 #include "base/message_loop/message_pump_libevent.h"
  10 #include "ui/events/event.h"
  11 #include "ui/events/events_export.h"
  12 #include "ui/events/ozone/evdev/event_converter_evdev.h"
  13 #include "ui/events/ozone/evdev/event_modifiers_evdev.h"
  14
  15 struct input_event;
  16
  17 namespace ui {
  18
  19 class EVENTS_EXPORT KeyEventConverterEvdev
  20     : public EventConverterEvdev,
  21       base::MessagePumpLibevent::Watcher {
  22  public:
  23   KeyEventConverterEvdev(int fd,
  24                          base::FilePath path,
  25                          EventModifiersEvdev* modifiers);
  26   virtual ~KeyEventConverterEvdev();
  27
  28   // Start & stop watching for events.
  29   virtual void Start() OVERRIDE;
  30   virtual void Stop() OVERRIDE;
  31
  32   // Overidden from base::MessagePumpLibevent::Watcher.
  33   virtual void OnFileCanReadWithoutBlocking(int fd) OVERRIDE;
  34   virtual void OnFileCanWriteWithoutBlocking(int fd) OVERRIDE;
  35
  36   void ProcessEvents(const struct input_event* inputs, int count);
  37
  38  private:
  39   // File descriptor for the /dev/input/event* instance.
  40   int fd_;
  41
  42   // Path to input device.
  43   base::FilePath path_;
  44
  45   // Shared modifier state.
  46   EventModifiersEvdev* modifiers_;
  47
  48   // Controller for watching the input fd.
  49   base::MessagePumpLibevent::FileDescriptorWatcher controller_;
  50
  51   void ConvertKeyEvent(int key, int value);
  52
  53   DISALLOW_COPY_AND_ASSIGN(KeyEventConverterEvdev);
  54 };
  55
  56 }  // namspace ui
  57
  58 #endif  // UI_EVENTS_OZONE_EVDEV_KEY_EVENT_CONVERTER_EVDEV_H_
  59