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/*
 * Copyright 2018 Roman Gilg <subdiff@gmail.com>
 *
 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

#ifndef X11LIBINPUTDUMMYDEVICE_H
#define X11LIBINPUTDUMMYDEVICE_H

#include <QObject>
#include <QString>
#include <QX11Info>

#include <X11/Xdefs.h>

class LibinputSettings;

class X11LibinputDummyDevice : public QObject
{
    Q_OBJECT

    //
    // general
    Q_PROPERTY(QString name READ name CONSTANT)
    Q_PROPERTY(bool supportsDisableEvents READ supportsDisableEvents CONSTANT)
    Q_PROPERTY(bool enabled READ isEnabled WRITE setEnabled NOTIFY enabledChanged)

    //
    // advanced
    Q_PROPERTY(Qt::MouseButtons supportedButtons READ supportedButtons CONSTANT)

    Q_PROPERTY(bool supportsLeftHanded READ supportsLeftHanded CONSTANT)
    Q_PROPERTY(bool leftHandedEnabledByDefault READ leftHandedEnabledByDefault CONSTANT)
    Q_PROPERTY(bool leftHanded READ isLeftHanded WRITE setLeftHanded NOTIFY leftHandedChanged)

    Q_PROPERTY(bool supportsMiddleEmulation READ supportsMiddleEmulation CONSTANT)
    Q_PROPERTY(bool middleEmulationEnabledByDefault READ middleEmulationEnabledByDefault CONSTANT)
    Q_PROPERTY(bool middleEmulation READ isMiddleEmulation WRITE setMiddleEmulation NOTIFY middleEmulationChanged)

    //
    // acceleration speed and profile
    Q_PROPERTY(bool supportsPointerAcceleration READ supportsPointerAcceleration CONSTANT)
    Q_PROPERTY(qreal pointerAcceleration READ pointerAcceleration WRITE setPointerAcceleration NOTIFY pointerAccelerationChanged)

    Q_PROPERTY(bool supportsPointerAccelerationProfileFlat READ supportsPointerAccelerationProfileFlat CONSTANT)
    Q_PROPERTY(bool defaultPointerAccelerationProfileFlat READ defaultPointerAccelerationProfileFlat CONSTANT)
    Q_PROPERTY(bool pointerAccelerationProfileFlat READ pointerAccelerationProfileFlat WRITE setPointerAccelerationProfileFlat NOTIFY pointerAccelerationProfileChanged)

    Q_PROPERTY(bool supportsPointerAccelerationProfileAdaptive READ supportsPointerAccelerationProfileAdaptive CONSTANT)
    Q_PROPERTY(bool defaultPointerAccelerationProfileAdaptive READ defaultPointerAccelerationProfileAdaptive CONSTANT)
    Q_PROPERTY(bool pointerAccelerationProfileAdaptive READ pointerAccelerationProfileAdaptive WRITE setPointerAccelerationProfileAdaptive NOTIFY pointerAccelerationProfileChanged)

    //
    // scrolling
    Q_PROPERTY(bool supportsNaturalScroll READ supportsNaturalScroll CONSTANT)
    Q_PROPERTY(bool naturalScrollEnabledByDefault READ naturalScrollEnabledByDefault CONSTANT)
    Q_PROPERTY(bool naturalScroll READ isNaturalScroll WRITE setNaturalScroll NOTIFY naturalScrollChanged)

public:
    X11LibinputDummyDevice(QObject *parent, Display *dpy);
    ~X11LibinputDummyDevice() override;

    bool getConfig();
    bool getDefaultConfig();
    bool applyConfig();
    bool isChangedConfig() const;

    //
    // general
    QString name() const {
        return m_name.val;
    }
    QString sysName() const {
        return m_sysName.val;
    }
    bool supportsDisableEvents() const {
        return m_supportsDisableEvents.val;
    }
    void setEnabled(bool enabled) {
        m_enabled.set(enabled);
    }
    bool isEnabled() const {
        return m_enabled.val;
    }
    Qt::MouseButtons supportedButtons() const {
        return m_supportedButtons.val;
    }

    //
    // advanced
    bool supportsLeftHanded() const {
        return m_supportsLeftHanded.val;
    }
    bool leftHandedEnabledByDefault() const {
        return m_leftHandedEnabledByDefault.val;
    }
    bool isLeftHanded() const {
        return m_leftHanded.val;
    }
    void setLeftHanded(bool set) {
        m_leftHanded.set(set);
    }

    bool supportsMiddleEmulation() const {
        return m_supportsMiddleEmulation.val;
    }
    bool middleEmulationEnabledByDefault() const {
        return m_middleEmulationEnabledByDefault.val;
    }
    bool isMiddleEmulation() const {
        return m_middleEmulation.val;
    }
    void setMiddleEmulation(bool set) {
        m_middleEmulation.set(set);
    }

    //
    // acceleration speed and profile
    bool supportsPointerAcceleration() const {
        return m_supportsPointerAcceleration.val;
    }
    qreal pointerAcceleration() const {
        return m_pointerAcceleration.val;
    }
    void setPointerAcceleration(qreal acceleration) {
        m_pointerAcceleration.set(acceleration);
    }

    bool supportsPointerAccelerationProfileFlat() const {
        return m_supportsPointerAccelerationProfileFlat.val;
    }
    bool defaultPointerAccelerationProfileFlat() const {
        return m_defaultPointerAccelerationProfileFlat.val;
    }
    bool pointerAccelerationProfileFlat() const {
        return m_pointerAccelerationProfileFlat.val;
    }
    void setPointerAccelerationProfileFlat(bool set) {
        m_pointerAccelerationProfileFlat.set(set);
    }

    bool supportsPointerAccelerationProfileAdaptive() const {
        return m_supportsPointerAccelerationProfileAdaptive.val;
    }
    bool defaultPointerAccelerationProfileAdaptive() const {
        return m_defaultPointerAccelerationProfileAdaptive.val;
    }
    bool pointerAccelerationProfileAdaptive() const {
        return m_pointerAccelerationProfileAdaptive.val;
    }
    void setPointerAccelerationProfileAdaptive(bool set) {
        m_pointerAccelerationProfileAdaptive.set(set);
    }

    //
    // scrolling
    bool supportsNaturalScroll() const {
        return m_supportsNaturalScroll.val;
    }
    bool naturalScrollEnabledByDefault() const {
        return m_naturalScrollEnabledByDefault.val;
    }
    bool isNaturalScroll() const {
        return m_naturalScroll.val;
    }
    void setNaturalScroll(bool set) {
        m_naturalScroll.set(set);
    }

Q_SIGNALS:
    void leftHandedChanged();
    void pointerAccelerationChanged();
    void pointerAccelerationProfileChanged();
    void enabledChanged();
    void middleEmulationChanged();
    void naturalScrollChanged();

private:
    template <typename T>
    struct Prop {
        explicit Prop(const QString &_name, const QString &_cfgName = "")
            : name(_name),
              cfgName(_cfgName)
        {}

        void set(T newVal) {
            if (avail && val != newVal) {
                val = newVal;
            }
        }
        void set(const Prop<T> &p) {
            if (avail && val != p.val) {
                val = p.val;
            }
        }
        bool changed() const {
            return avail && (old != val);
        }

        void reset(T newVal) {
            val = newVal;
            old = newVal;
        }

        QString name;
        QString cfgName;

        bool avail = true;
        T old;
        T val;

        Atom atom;
    };

    template<typename T>
    bool valueWriter(Prop<T> &prop);

    //
    // general
    Prop<QString> m_name = Prop<QString>("name");
    Prop<QString> m_sysName = Prop<QString>("sysName");
    Prop<bool> m_supportsDisableEvents = Prop<bool>("supportsDisableEvents");
    Prop<bool> m_enabled = Prop<bool>("enabled");

    //
    // advanced
    Prop<Qt::MouseButtons> m_supportedButtons  = Prop<Qt::MouseButtons>("supportedButtons");

    Prop<bool> m_supportsLeftHanded = Prop<bool>("supportsLeftHanded");
    Prop<bool> m_leftHandedEnabledByDefault = Prop<bool>("leftHandedEnabledByDefault");
    Prop<bool> m_leftHanded = Prop<bool>("leftHanded", "XLbInptLeftHanded");

    Prop<bool> m_supportsMiddleEmulation = Prop<bool>("supportsMiddleEmulation");
    Prop<bool> m_middleEmulationEnabledByDefault = Prop<bool>("middleEmulationEnabledByDefault");
    Prop<bool> m_middleEmulation = Prop<bool>("middleEmulation", "XLbInptMiddleEmulation");

    //
    // acceleration speed and profile
    Prop<bool> m_supportsPointerAcceleration = Prop<bool>("supportsPointerAcceleration");
    Prop<qreal> m_defaultPointerAcceleration = Prop<qreal>("defaultPointerAcceleration");
    Prop<qreal> m_pointerAcceleration = Prop<qreal>("pointerAcceleration", "XLbInptPointerAcceleration");

    Prop<bool> m_supportsPointerAccelerationProfileFlat = Prop<bool>("supportsPointerAccelerationProfileFlat");
    Prop<bool> m_defaultPointerAccelerationProfileFlat = Prop<bool>("defaultPointerAccelerationProfileFlat");
    Prop<bool> m_pointerAccelerationProfileFlat = Prop<bool>("pointerAccelerationProfileFlat", "XLbInptAccelProfileFlat");

    Prop<bool> m_supportsPointerAccelerationProfileAdaptive = Prop<bool>("supportsPointerAccelerationProfileAdaptive");
    Prop<bool> m_defaultPointerAccelerationProfileAdaptive = Prop<bool>("defaultPointerAccelerationProfileAdaptive");
    Prop<bool> m_pointerAccelerationProfileAdaptive = Prop<bool>("pointerAccelerationProfileAdaptive");

    //
    // scrolling
    Prop<bool> m_supportsNaturalScroll = Prop<bool>("supportsNaturalScroll");
    Prop<bool> m_naturalScrollEnabledByDefault = Prop<bool>("naturalScrollEnabledByDefault");
    Prop<bool> m_naturalScroll = Prop<bool>("naturalScroll", "XLbInptNaturalScroll");

    LibinputSettings *m_settings;
    Display *m_dpy = nullptr;
};

#endif // X11LIBINPUTDUMMYDEVICE_H