- Qt 5.5
- Qt Sensors
- Qt Sensors - Explorer QML Example
- propertyinfo.cpp Example File
- Qt 5.5.1 Reference Documentation

# propertyinfo.cpp Example File

sensor_explorer/import/propertyinfo.cpp

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the QtSensors module of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:LGPL21$
    ** Commercial License Usage
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    ** accordance with the commercial license agreement provided with the
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    ** GNU Lesser General Public License Usage
    ** Alternatively, this file may be used under the terms of the GNU Lesser
    ** General Public License version 2.1 or version 3 as published by the Free
    ** Software Foundation and appearing in the file LICENSE.LGPLv21 and
    ** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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    ****************************************************************************/

    #include "sensoritem.h"
    #include <QtCore/QDebug>
    #include <QtSensors>

    /*
        \class QPropertyInfo
        \brief The QPropertyInfo type provides an easy access for reading and writing the property values.
    */

    /*
        Construct a QPropertyInfo object with parent \a parent
    */
    QPropertyInfo::QPropertyInfo(QObject* parent)
        : QObject(parent)
        , _index(0)
        , _isWriteable(false)
        , _name("")
        , _typeName("")
        , _value("")
    {}

    /*
        Construct a QPropertyInfo object with parent \a parent, property name \a name, property index \a index,
        property write access \a writeable, property type \a typeName and property value \a value
    */
    QPropertyInfo::QPropertyInfo(const QString& name, int index, bool writeable, const QString& typeName, const QString& value, QObject* parent)
        : QObject(parent)
        , _index(index)
        , _isWriteable(writeable)
        , _name(name)
        , _typeName(typeName)
        , _value(value)
    {}

    /*
        \property QPropertyInfo::name
        Returns the name of the property
    */
    QString QPropertyInfo::name()
    {
        return _name;
    }

    /*
        \property QPropertyInfo::typeName
        Returns the type of the property
    */
    QString QPropertyInfo::typeName()
    {
        return _typeName;
    }

    /*
        \property QPropertyInfo::value
        Returns the current value of the property
    */
    QString QPropertyInfo::value()
    {
        return _value;
    }

    /*
        \fn void QPropertyInfo::valueChanged()
        Signal that notifies the client if the property value was changed.
    */

    /*
        \fn QPropertyInfo::setValue(const QString& value)
        Sets the value \a value of the property
    */
    void QPropertyInfo::setValue(const QString& value)
    {
        if (value != _value){
            _value = value;
            emit valueChanged();
        }
    }

    /*
        \fn QPropertyInfo::index()
        Returns the meta-data index of the property
    */
    int QPropertyInfo::index()
    {
        return _index;
    }

    /*
        \property QPropertyInfo::isWriteable
        Returns true if the property is writeable false if property is read only
    */
    bool QPropertyInfo::isWriteable()
    {
        return _isWriteable;
    }