MSWindowsScreenSaver.h

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/*
 * Deskflow -- mouse and keyboard sharing utility
 * SPDX-FileCopyrightText: (C) 2012 - 2016 Symless Ltd.
 * SPDX-FileCopyrightText: (C) 2002 Chris Schoeneman
 * SPDX-License-Identifier: GPL-2.0-only WITH LicenseRef-OpenSSL-Exception
 */
 
#pragma once
 
#include "deskflow/IScreenSaver.h"
 
#define WIN32_LEAN_AND_MEAN
#include <Windows.h>
 
class Thread;

class MSWindowsScreenSaver : public IScreenSaver
{
public:
  MSWindowsScreenSaver();
  ~MSWindowsScreenSaver() override;




  bool checkStarted(UINT msg, WPARAM, LPARAM);

 
  // IScreenSaver overrides
  void enable() override;
  void disable() override;
  void activate() override;
  void deactivate() override;
  bool isActive() const override;
 
private:
  class FindScreenSaverInfo
  {
  public:
    HDESK m_desktop;
    HWND m_window;
  };
 
  static BOOL CALLBACK killScreenSaverFunc(HWND hwnd, LPARAM lParam);
 
  void watchDesktop();
  void watchProcess(HANDLE process);
  void unwatchProcess();
  void watchDesktopThread(void *);
  void watchProcessThread(void *);
 
  void setSecure(bool secure, bool saveSecureAsInt);
  bool isSecure(bool *wasSecureAnInt) const;
 
private:
  BOOL m_wasEnabled;
  bool m_wasSecure = false;
  bool m_wasSecureAnInt = false;
 
  HANDLE m_process = nullptr;
  Thread *m_watch = nullptr;
  DWORD m_threadID = 0;
  UINT m_msg = 0;
  WPARAM m_wParam = 0;
  LPARAM m_lParam = 0;
 
  // checkActive state.  true if the screen saver is being watched
  // for deactivation (and is therefore active).
  bool m_active = false;
};