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- // Copyright 2020 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 UI_BASE_X_X11_USER_INPUT_MONITOR_H_
- #define UI_BASE_X_X11_USER_INPUT_MONITOR_H_
- #include <memory>
- #include "base/component_export.h"
- #include "base/files/file_descriptor_watcher_posix.h"
- #include "base/memory/shared_memory_mapping.h"
- #include "base/task/current_thread.h"
- #include "base/task/single_thread_task_runner.h"
- #include "ui/events/keyboard_event_counter.h"
- #include "ui/gfx/x/connection.h"
- #include "ui/gfx/x/xinput.h"
- namespace ui {
- // This is the actual implementation of event monitoring. It's separated from
- // UserInputMonitorLinux since it needs to be deleted on the IO thread.
- class COMPONENT_EXPORT(UI_BASE_X) XUserInputMonitor
- : public base::SupportsWeakPtr<XUserInputMonitor>,
- public base::CurrentThread::DestructionObserver,
- public x11::EventObserver {
- public:
- using WriteKeyPressCallback = base::RepeatingCallback<
- void(const base::WritableSharedMemoryMapping& shmem, uint32_t count)>;
- explicit XUserInputMonitor(
- const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner);
- XUserInputMonitor(const XUserInputMonitor&) = delete;
- XUserInputMonitor& operator=(const XUserInputMonitor&) = delete;
- ~XUserInputMonitor() override;
- uint32_t GetKeyPressCount() const;
- void StartMonitor(WriteKeyPressCallback& callback);
- void StartMonitorWithMapping(WriteKeyPressCallback& callback,
- base::WritableSharedMemoryMapping mapping);
- void StopMonitor();
- private:
- // base::CurrentThread::DestructionObserver:
- void WillDestroyCurrentMessageLoop() override;
- // x11::EventObserver:
- void OnEvent(const x11::Event& event) override;
- void OnConnectionData();
- scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
- // Used for sharing key press count value.
- std::unique_ptr<base::WritableSharedMemoryMapping> key_press_count_mapping_;
- // The following members should only be accessed on the IO thread.
- std::unique_ptr<base::FileDescriptorWatcher::Controller> watch_controller_;
- std::unique_ptr<x11::Connection> connection_;
- KeyboardEventCounter counter_;
- WriteKeyPressCallback write_key_press_callback_;
- };
- } // namespace ui
- #endif // UI_BASE_X_X11_USER_INPUT_MONITOR_H_
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