blob: 44e7b6e1defeb6d2fb97a7700113e8d76e09d592 [file] [log] [blame]
// Copyright 2013 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.
#include <set>
#include "base/basictypes.h"
#include "base/synchronization/lock.h"
#include "cobalt/media/base/media_export.h"
#include "starboard/types.h"
#include "ui/events/event_constants.h"
#include "ui/events/keycodes/keyboard_codes.h"
namespace cobalt {
namespace media {
// This class tracks the total number of keypresses based on the OnKeyboardEvent
// calls it receives from the client.
// Multiple key down events for the same key are counted as one keypress until
// the same key is released.
class MEDIA_EXPORT KeyboardEventCounter {
// Resets the count to 0. Must be called on the same thread as
// OnKeyboardEvent.
void Reset();
// Returns the total number of keypresses since its creation or last Reset()
// call. Can be called on any thread.
size_t GetKeyPressCount() const;
// The client should call this method on key down or key up events.
// Must be called on a single thread.
void OnKeyboardEvent(ui::EventType event, ui::KeyboardCode key_code);
// The set of keys currently held down.
std::set<ui::KeyboardCode> pressed_keys_;
size_t total_key_presses_;
} // namespace media
} // namespace cobalt