displaycontroller.h

/*
 * SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 * SPDX-FileCopyrightText: 2021-2022 Eike Hein <sho@eikehein.com>
 */
 
#pragma once
 
#include <QEasingCurve>
#include <QObject>
#include <QQmlParserStatus>
#include <QVariantAnimation>
 
#ifdef HYELICHT_BUILD_ONBOARD
#include <QSerialPort>
#endif
 
#include <QTimer>
 
class QSerialPort;
 
 
class DisplayController : public QObject, public QQmlParserStatus
{
    Q_OBJECT
    Q_INTERFACES(QQmlParserStatus)
 
    
    Q_PROPERTY(bool enabled READ enabled WRITE setEnabled NOTIFY enabledChanged)
 
 
    Q_PROPERTY(QString serialPortName READ serialPortName WRITE setSerialPortName NOTIFY serialPortNameChanged)
 
 
    Q_PROPERTY(qint32 baudRate READ baudRate WRITE setBaudRate NOTIFY baudRateChanged)
 
 
    Q_PROPERTY(bool on READ on WRITE setOn NOTIFY onChanged)
 
 
    Q_PROPERTY(qreal brightness READ brightness WRITE setBrightness NOTIFY brightnessChanged)
 
 
    Q_PROPERTY(int idleTimeout READ idleTimeout WRITE setIdleTimeout NOTIFY idleTimeoutChanged)
 
 
    Q_PROPERTY(int fadeDuration READ fadeDuration WRITE setFadeDuration NOTIFY fadeDurationChanged)
 
 
    Q_PROPERTY(QEasingCurve fadeEasing READ fadeEasing WRITE setFadeEasing NOTIFY fadeEasingChanged)
 
    public:
 
        explicit DisplayController(QObject *parent = nullptr);
        ~DisplayController() override;
 
 
        bool enabled() const;
 
 
        void setEnabled(bool enabled);
 
 
        QString serialPortName() const;
 
 
        void setSerialPortName(const QString &serialPortName);
 
 
        qint32 baudRate() const;
 
 
        void setBaudRate(qint32 rate);
 
 
        bool on() const;
 
 
        void setOn(bool on);
 
 
        qreal brightness() const;
 
 
        void setBrightness(qreal brightness);
 
 
        int idleTimeout() const;
 
 
        void setIdleTimeout(int timeout);
 
 
        Q_INVOKABLE void resetIdleTimeout();
 
 
        int fadeDuration() const;
 
 
        void setFadeDuration(int fadeDuration);
 
 
        QEasingCurve fadeEasing() const;
 
 
        void setFadeEasing(const QEasingCurve &fadeEasing);
 
        void classBegin() override;
        void componentComplete() override;
 
    Q_SIGNALS:
 
        void enabledChanged() const;
 
 
        void serialPortNameChanged() const;
 
 
        void baudRateChanged() const;
 
 
        void onChanged() const;
 
 
        void brightnessChanged() const;
 
 
        void idleTimeoutChanged() const;
 
 
        void fadeDurationChanged() const;
 
 
        void fadeEasingChanged() const;
 
    private:
        void connectPwmGenerator();
        void disconnectPwmGenerator();
        void fade(qreal from, qreal to);
        inline void writeBrightness(qreal brightness);
 
        bool m_enabled;
 
#ifdef HYELICHT_BUILD_ONBOARD
        QSerialPort m_serialPort;
#endif
 
        bool m_on;
 
        qreal m_brightness;
        qreal m_pendingBrightness;
 
        QTimer m_idleTimeoutTimer;
 
        QVariantAnimation m_fadeAnimation;
        int m_fadeDuration;
 
        bool m_createdByQML;
        bool m_complete;
};