File indexing completed on 2024-04-28 08:49:03

0001 /*
0002     SPDX-FileCopyrightText: 2021 Aleix Pol Gonzalez <aleixpol@kde.org>
0003 
0004     SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
0005 */
0006 
0007 #ifndef POINTERLOCKER_H
0008 #define POINTERLOCKER_H
0009 
0010 #include <QObject>
0011 #include <QWindow>
0012 
0013 class AbstractPointerLocker : public QObject
0014 {
0015     Q_OBJECT
0016     Q_PROPERTY(bool isSupported READ isSupported NOTIFY supportedChanged)
0017     Q_PROPERTY(bool isLocked READ isLocked WRITE setLocked NOTIFY lockedChanged)
0018     Q_PROPERTY(bool isLockEffective READ isLockEffective NOTIFY lockEffectiveChanged)
0019     Q_PROPERTY(QWindow *window READ window WRITE setWindow NOTIFY windowChanged)
0020 public:
0021     AbstractPointerLocker(QObject *parent = nullptr)
0022         : QObject(parent)
0023     {
0024     }
0025 
0026     virtual void setLocked(bool locked) = 0;
0027     virtual bool isLocked() const = 0;
0028     virtual bool isLockEffective() const = 0;
0029     virtual bool isSupported() const = 0;
0030 
0031     virtual void setWindow(QWindow *window);
0032     QWindow *window() const
0033     {
0034         return m_window;
0035     }
0036 
0037 Q_SIGNALS:
0038     void supportedChanged(bool isSupported);
0039     void lockedChanged(bool isLocked);
0040     void lockEffectiveChanged(bool isLockEffective);
0041     void windowChanged();
0042     void pointerMoved(const QPointF &delta);
0043 
0044 protected:
0045     QWindow *m_window = nullptr;
0046 };
0047 
0048 class PointerLockerQt : public AbstractPointerLocker
0049 {
0050     Q_OBJECT
0051 public:
0052     PointerLockerQt(QObject *parent = nullptr);
0053     ~PointerLockerQt() override;
0054 
0055     void setLocked(bool locked) override;
0056     bool isLocked() const override;
0057     bool isSupported() const override
0058     {
0059         return true;
0060     }
0061     bool isLockEffective() const override
0062     {
0063         return isLocked();
0064     }
0065 
0066 private:
0067     bool eventFilter(QObject *watched, QEvent *event) override;
0068 
0069     QPoint m_originalPosition;
0070     bool m_isLocked = false;
0071 };
0072 
0073 #endif