62 lines
1.4 KiB
C++
62 lines
1.4 KiB
C++
#ifndef ENERGYSAVER_H
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#define ENERGYSAVER_H
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#include <QObject>
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#include <QTimer>
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/**
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* @brief Class handling energy saving options.
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*
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* Shut down device if no mouse input is detected and music player
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* has not been active or a certain time interval.
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*
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* @todo For now this does only work for Lena's RasPi, where the
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* shutdown script is positioned in a ceratin hardcoded path.
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* Enable/disable energy saving option, timeout and path of
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* shutdown script via config
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*/
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class EnergySaver : public QObject
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{
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Q_OBJECT
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protected:
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explicit EnergySaver(QObject *parent = nullptr) : QObject(parent) {};
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public:
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/**
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* @brief Create instance if necessary and set timeout interval.
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* @param interval Timer interval in seconds
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* @see EnergySaver::instance
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*/
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static void init(int interval);
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/**
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* @brief Implements the singleton pattern.
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* @return Instance
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*
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* If no instance has been created yet, create new instance.
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*/
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static EnergySaver *instance();
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public slots:
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/**
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* @brief Restart shutdown timer, e.g. because of music player activiti
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*/
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void restartTimer();
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private:
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/**
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* @brief Initialize and connect timer.
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* @param interval Timeout interval in millisecond.
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*/
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void initTimer(int interval);
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QTimer mTimer;
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private slots:
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/**
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* @brief Behavior on timeout: shut down RaspberryPi.
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*/
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void onTimeout();
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};
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#endif // ENERGYSAVER_H
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