timemodel.h - mozsearch

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// Copyright (C) 2017 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

#ifndef TIMEMODEL_H

#define TIMEMODEL_H

#include <QtQml/qqml.h>

#include <QtCore/qdatetime.h>

#include <QtCore/qbasictimer.h>

#include <QtCore/qcoreapplication.h>

// Implements a "TimeModel" class with hour and minute properties

// that change on-the-minute yet efficiently sleep the rest

// of the time.

class MinuteTimer : public QObject

    Q_OBJECT

public:

    MinuteTimer(QObject *parent) : QObject(parent) {}

    void start();

    void stop();

    int hour() const { return time.hour(); }

    int minute() const { return time.minute(); }

signals:

    void timeChanged();

protected:

    void timerEvent(QTimerEvent *) override;

private:

    QTime time;

    QBasicTimer timer;

};

//![0]

class TimeModel : public QObject

    Q_OBJECT

    Q_PROPERTY(int hour READ hour NOTIFY timeChanged)

    Q_PROPERTY(int minute READ minute NOTIFY timeChanged)

    QML_NAMED_ELEMENT(Time)

//![0]

public:

    TimeModel(QObject *parent=nullptr);

    ~TimeModel() override;

    int minute() const { return timer->minute(); }

    int hour() const { return timer->hour(); }

signals:

    void timeChanged();

private:

    QTime t;

    static MinuteTimer *timer;

    static int instances;

};

#endif // TIMEMODEL_H