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 #include "remoting/client/key_event_mapper.h" 6 7 #include "remoting/proto/event.pb.h" 8 9 namespace remoting { 10 KeyEventMapper()11KeyEventMapper::KeyEventMapper() { 12 } 13 KeyEventMapper(InputStub * stub)14KeyEventMapper::KeyEventMapper(InputStub* stub) : protocol::InputFilter(stub) { 15 } 16 ~KeyEventMapper()17KeyEventMapper::~KeyEventMapper() { 18 } 19 SetTrapCallback(KeyTrapCallback callback)20void KeyEventMapper::SetTrapCallback(KeyTrapCallback callback) { 21 trap_callback = callback; 22 } 23 TrapKey(uint32 usb_keycode,bool trap_key)24void KeyEventMapper::TrapKey(uint32 usb_keycode, bool trap_key) { 25 if (trap_key) { 26 trapped_keys.insert(usb_keycode); 27 } else { 28 trapped_keys.erase(usb_keycode); 29 } 30 } 31 RemapKey(uint32 in_usb_keycode,uint32 out_usb_keycode)32void KeyEventMapper::RemapKey(uint32 in_usb_keycode, uint32 out_usb_keycode) { 33 if (in_usb_keycode == out_usb_keycode) { 34 mapped_keys.erase(in_usb_keycode); 35 } else { 36 mapped_keys[in_usb_keycode] = out_usb_keycode; 37 } 38 } 39 InjectKeyEvent(const protocol::KeyEvent & event)40void KeyEventMapper::InjectKeyEvent(const protocol::KeyEvent& event) { 41 if (event.has_usb_keycode()) { 42 // Deliver trapped keys to the callback, not the next stub. 43 if (!trap_callback.is_null() && event.has_pressed() && 44 (trapped_keys.find(event.usb_keycode()) != trapped_keys.end())) { 45 trap_callback.Run(event); 46 return; 47 } 48 49 // Re-map mapped keys to the new value before passing them on. 50 std::map<uint32,uint32>::iterator mapped = 51 mapped_keys.find(event.usb_keycode()); 52 if (mapped != mapped_keys.end()) { 53 protocol::KeyEvent new_event(event); 54 new_event.set_usb_keycode(mapped->second); 55 InputFilter::InjectKeyEvent(new_event); 56 return; 57 } 58 } 59 60 InputFilter::InjectKeyEvent(event); 61 } 62 63 } // namespace remoting 64