| // Copyright 2016 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_HOST_LINUX_X11_CHARACTER_INJECTOR_H_ |
| #define REMOTING_HOST_LINUX_X11_CHARACTER_INJECTOR_H_ |
| |
| #include <stdint.h> |
| |
| #include <queue> |
| |
| #include "base/macros.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/threading/thread_checker.h" |
| #include "base/timer/timer.h" |
| |
| namespace remoting { |
| |
| class X11Keyboard; |
| |
| // This is a helper class for injecting unicode characters to XWindow server. |
| // Characters will be queued up and sent when there is available resource. |
| class X11CharacterInjector { |
| public: |
| explicit X11CharacterInjector(std::unique_ptr<X11Keyboard> keyboard); |
| ~X11CharacterInjector(); |
| |
| void Inject(uint32_t code_point); |
| |
| private: |
| struct KeyInfo; |
| struct MapResult; |
| |
| // Schedules a task to call DoInject after |delay| if no such task has been |
| // scheduled. |
| void Schedule(base::TimeDelta delay); |
| void DoInject(); |
| |
| // |code_point|: The Unicode code point for the character. |
| // If the returned result indicates success, caller can use the returned |
| // keycode and modifiers to simulate a key press that can generate the |
| // character. |
| // |
| // Note that the returned result will expire after some amount of time so do |
| // not store the result for later use. |
| MapResult MapCharacter(uint32_t code_point); |
| |
| // Resets the expiration time of the KeyInfo in available_keycodes_[index] |
| // to now + the expire duration constant. |
| void ResetKeyInfoExpirationTime(base::TimeTicks now, |
| std::vector<KeyInfo>::iterator position); |
| |
| std::unique_ptr<X11Keyboard> keyboard_; |
| std::queue<uint32_t> characters_queue_; |
| base::OneShotTimer injection_timer_; |
| |
| // Sorted by ascending expiration time. |
| std::vector<KeyInfo> available_keycodes_; |
| |
| base::ThreadChecker thread_checker_; |
| DISALLOW_COPY_AND_ASSIGN(X11CharacterInjector); |
| }; |
| |
| } // namespace remoting |
| |
| #endif // REMOTING_HOST_LINUX_X11_CHARACTER_INJECTOR_H_ |