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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_EVENTS_OZONE_EVDEV_EVENT_CONVERTER_EVDEV_H_
#define UI_EVENTS_OZONE_EVDEV_EVENT_CONVERTER_EVDEV_H_
#include "base/callback.h"
#include "base/files/file_path.h"
#include "base/message_loop/message_loop.h"
#include "ui/events/ozone/evdev/events_ozone_evdev_export.h"
#include "ui/gfx/geometry/size.h"
namespace ui {
class Event;
typedef base::Callback<void(Event*)> EventDispatchCallback;
class EVENTS_OZONE_EVDEV_EXPORT EventConverterEvdev
: public base::MessagePumpLibevent::Watcher {
public:
EventConverterEvdev(int fd, const base::FilePath& path, int id);
virtual ~EventConverterEvdev();
int id() const { return id_; }
// Start reading events.
void Start();
// Stop reading events.
void Stop();
// Returns true of the converter is used for a touchscreen device.
virtual bool HasTouchscreen() const;
// Returns the size of the touchscreen device if the converter is used for a
// touchscreen device.
virtual gfx::Size GetTouchscreenSize() const;
protected:
// base::MessagePumpLibevent::Watcher:
virtual void OnFileCanWriteWithoutBlocking(int fd) override;
// File descriptor to read.
int fd_;
// Path to input device.
base::FilePath path_;
// Uniquely identifies an event converter.
int id_;
// Controller for watching the input fd.
base::MessagePumpLibevent::FileDescriptorWatcher controller_;
private:
DISALLOW_COPY_AND_ASSIGN(EventConverterEvdev);
};
} // namespace ui
#endif // UI_EVENTS_OZONE_EVDEV_EVENT_CONVERTER_EVDEV_H_
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