capslock.h

/* capslock.h - Helper to check whether Caps Lock is on
 * Copyright (C) 2021 g10 Code GmbH
 *
 * Software engineering by Ingo Klöcker <dev@ingo-kloecker.de>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <https://www.gnu.org/licenses/>.
 * SPDX-License-Identifier: GPL-2.0+
 */
 
#ifndef __PINENTRY_QT_CAPSLOCK_H__
#define __PINENTRY_QT_CAPSLOCK_H__
 
#include <QObject>
#include <memory>
 
enum class LockState { Unknown = -1, Off, On };
 
LockState capsLockState();
 
#ifdef PINENTRY_QT_WAYLAND
namespace KWayland {
namespace Client {
class Registry;
class Seat;
}  // namespace Client
}  // namespace KWayland
#endif
 
class CapsLockWatcher : public QObject {
  Q_OBJECT
 
 public:
  explicit CapsLockWatcher(QObject *parent = nullptr);
 
 Q_SIGNALS:
  void stateChanged(bool locked);
 
 private:
  class Private;
  std::unique_ptr<Private> d;
};
 
class CapsLockWatcher::Private {
 public:
  explicit Private(CapsLockWatcher *);
#ifdef PINENTRY_QT_WAYLAND
  void watchWayland();
#endif
 
 private:
#ifdef PINENTRY_QT_WAYLAND
  void registry_seatAnnounced(quint32, quint32);
  void seat_hasKeyboardChanged(bool);
  void keyboard_modifiersChanged(quint32);
#endif
 
 private:
  CapsLockWatcher *const q;
 
#ifdef PINENTRY_QT_WAYLAND
  KWayland::Client::Registry *registry = nullptr;
  KWayland::Client::Seat *seat = nullptr;
#endif
};
 
#endif  // __PINENTRY_QT_CAPSLOCK_H__