5e801e2793
As in the past, to avoid rewriting various autotests that contain line-number information, an extra blank line has been inserted at the end of the license text to ensure that this commit does not change the total number of lines in the license header. Change-Id: I20e5215108c6ebd5f8474fed5c3665118e4791e6 Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
102 lines
3.6 KiB
C++
102 lines
3.6 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/
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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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** $QT_BEGIN_LICENSE:LGPL$
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt 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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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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**
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**
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**
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**
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**
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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 <QtCore/QObject>
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#include <QtCore/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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const 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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