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// Copyright (c) 2012 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 REMOTING_PROTOCOL_INPUT_EVENT_TRACKER_H_
#define REMOTING_PROTOCOL_INPUT_EVENT_TRACKER_H_
#include <set>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "remoting/protocol/input_stub.h"
#include "third_party/skia/include/core/SkPoint.h"
namespace remoting {
namespace protocol {
// Filtering InputStub which tracks mouse and keyboard input events before
// passing them on to |input_stub|, and can dispatch release events to
// |input_stub| for all currently-pressed keys and buttons when necessary.
class InputEventTracker : public InputStub {
public:
explicit InputEventTracker(protocol::InputStub* input_stub);
virtual ~InputEventTracker();
// Returns true if the key with the specified USB code is currently pressed.
bool IsKeyPressed(uint32 usb_keycode) const;
// Returns the count of keys currently pressed.
int PressedKeyCount() const;
// Dispatch release events for all currently-pressed keys and mouse buttons
// to the InputStub.
void ReleaseAll();
// InputStub interface.
virtual void InjectKeyEvent(const KeyEvent& event) OVERRIDE;
virtual void InjectMouseEvent(const MouseEvent& event) OVERRIDE;
private:
protocol::InputStub* input_stub_;
std::set<uint32> pressed_keys_;
SkIPoint mouse_pos_;
uint32 mouse_button_state_;
DISALLOW_COPY_AND_ASSIGN(InputEventTracker);
};
} // namespace protocol
} // namespace remoting
#endif // REMOTING_PROTOCOL_INPUT_EVENT_TRACKER_H_
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