1 // Copyright (c) 2012 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 REMOTING_PROTOCOL_INPUT_EVENT_TRACKER_H_ 6 #define REMOTING_PROTOCOL_INPUT_EVENT_TRACKER_H_ 7 8 #include <set> 9 10 #include "base/basictypes.h" 11 #include "base/compiler_specific.h" 12 #include "remoting/protocol/input_stub.h" 13 #include "third_party/webrtc/modules/desktop_capture/desktop_geometry.h" 14 15 namespace remoting { 16 namespace protocol { 17 18 // Filtering InputStub which tracks mouse and keyboard input events before 19 // passing them on to |input_stub|, and can dispatch release events to 20 // |input_stub| for all currently-pressed keys and buttons when necessary. 21 class InputEventTracker : public InputStub { 22 public: 23 explicit InputEventTracker(protocol::InputStub* input_stub); 24 virtual ~InputEventTracker(); 25 26 // Returns true if the key with the specified USB code is currently pressed. 27 bool IsKeyPressed(uint32 usb_keycode) const; 28 29 // Returns the count of keys currently pressed. 30 int PressedKeyCount() const; 31 32 // Dispatch release events for all currently-pressed keys and mouse buttons 33 // to the InputStub. 34 void ReleaseAll(); 35 36 // InputStub interface. 37 virtual void InjectKeyEvent(const KeyEvent& event) OVERRIDE; 38 virtual void InjectMouseEvent(const MouseEvent& event) OVERRIDE; 39 40 private: 41 protocol::InputStub* input_stub_; 42 43 std::set<uint32> pressed_keys_; 44 45 webrtc::DesktopVector mouse_pos_; 46 uint32 mouse_button_state_; 47 48 DISALLOW_COPY_AND_ASSIGN(InputEventTracker); 49 }; 50 51 } // namespace protocol 52 } // namespace remoting 53 54 #endif // REMOTING_PROTOCOL_INPUT_EVENT_TRACKER_H_ 55