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// Copyright 2012 The Chromium Authors
// 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 <stdint.h>
#include <set>
#include "base/compiler_specific.h"
#include "base/memory/raw_ptr.h"
#include "remoting/protocol/input_stub.h"
#include "third_party/webrtc/modules/desktop_capture/desktop_geometry.h"
#include "ui/events/keycodes/dom/dom_code.h"
namespace remoting::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:
InputEventTracker();
explicit InputEventTracker(InputStub* input_stub);
InputEventTracker(const InputEventTracker&) = delete;
InputEventTracker& operator=(const InputEventTracker&) = delete;
~InputEventTracker() override;
void set_input_stub(InputStub* input_stub) { input_stub_ = input_stub; }
// Returns true if the key with the specified USB code is currently pressed.
bool IsKeyPressed(ui::DomCode usb_keycode) const;
// Returns the count of keys currently pressed.
int PressedKeyCount() const;
// Dispatch release events for all currently-pressed keys, mouse buttons, and
// touch points to the InputStub.
void ReleaseAll();
// Similar to ReleaseAll, but conditional on a modifier key tracked by this
// class being pressed without the corresponding parameter indicating that it
// should be.
void ReleaseAllIfModifiersStuck(bool alt_expected,
bool ctrl_expected,
bool os_expected,
bool shift_expected);
// InputStub interface.
void InjectKeyEvent(const KeyEvent& event) override;
void InjectTextEvent(const TextEvent& event) override;
void InjectMouseEvent(const MouseEvent& event) override;
void InjectTouchEvent(const TouchEvent& event) override;
private:
raw_ptr<InputStub> input_stub_ = nullptr;
std::set<ui::DomCode> pressed_keys_;
webrtc::DesktopVector mouse_pos_;
uint32_t mouse_button_state_ = 0;
std::set<uint32_t> touch_point_ids_;
};
} // namespace remoting::protocol
#endif // REMOTING_PROTOCOL_INPUT_EVENT_TRACKER_H_
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