973fb0680d
By removing unnamespaced forward decls. Change-Id: Icccb34092ef7451d29f52db08811a2152c50e4b8 Reviewed-by: Jonas Rabbe <jonas.rabbe@nokia.com>
102 lines
3.6 KiB
C++
102 lines
3.6 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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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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** $QT_END_LICENSE$
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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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