bbfccc7135
Qt copyrights are now in The Qt Company, so we could update the source code headers accordingly. In the same go we should also fix the links to point to qt.io. Change-Id: I1c6faa4f59f8eca54f01ef20941fa60161dd7872 Reviewed-by: Yoann Lopes <yoann.lopes@theqtcompany.com>
95 lines
3.4 KiB
C++
95 lines
3.4 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the Qt Mobility Components.
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**
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** $QT_BEGIN_LICENSE:LGPL21$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef FREQUENCYMONITOR_H
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#define FREQUENCYMONITOR_H
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#include <QObject>
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#include <QTimer>
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class FrequencyMonitorPrivate;
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/**
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* Class for measuring frequency of events
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*
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* Occurrence of the event is notified by the client via the notify() slot.
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* On a regular interval, both an instantaneous and a rolling average
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* event frequency are calculated.
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*/
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class FrequencyMonitor : public QObject
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{
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Q_OBJECT
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Q_DECLARE_PRIVATE(FrequencyMonitor)
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Q_PROPERTY(QString label READ label WRITE setLabel NOTIFY labelChanged)
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Q_PROPERTY(bool active READ active WRITE setActive NOTIFY activeChanged)
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Q_PROPERTY(int samplingInterval READ samplingInterval WRITE setSamplingInterval NOTIFY samplingIntervalChanged)
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Q_PROPERTY(int traceInterval READ traceInterval WRITE setTraceInterval NOTIFY traceIntervalChanged)
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Q_PROPERTY(qreal instantaneousFrequency READ instantaneousFrequency NOTIFY instantaneousFrequencyChanged)
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Q_PROPERTY(qreal averageFrequency READ averageFrequency NOTIFY averageFrequencyChanged)
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public:
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FrequencyMonitor(QObject *parent = 0);
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~FrequencyMonitor();
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static void qmlRegisterType();
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QString label() const;
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bool active() const;
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int samplingInterval() const;
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int traceInterval() const;
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qreal instantaneousFrequency() const;
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qreal averageFrequency() const;
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signals:
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void labelChanged(const QString &value);
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void activeChanged(bool);
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void samplingIntervalChanged(int value);
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void traceIntervalChanged(int value);
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void frequencyChanged();
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void instantaneousFrequencyChanged(qreal value);
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void averageFrequencyChanged(qreal value);
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public slots:
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Q_INVOKABLE void notify();
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Q_INVOKABLE void trace();
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void setActive(bool value);
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void setLabel(const QString &value);
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void setSamplingInterval(int value);
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void setTraceInterval(int value);
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private:
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FrequencyMonitorPrivate *d_ptr;
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};
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#endif // FREQUENCYMONITOR_H
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