Qt 5.11 | Qt Positioning | Weather Info (C++/QML) | appmodel.h Example File

Qt 5.11.3 Reference Documentation

# appmodel.h Example File

weatherinfo/appmodel.h

      /****************************************************************************
      **
      ** Copyright (C) 2017 The Qt Company Ltd.
      ** Contact: https://www.qt.io/licensing/
      **
      ** This file is part of the examples of the Qt Toolkit.
      **
      ** $QT_BEGIN_LICENSE:BSD$
      ** Commercial License Usage
      ** Licensees holding valid commercial Qt licenses may use this file in
      ** accordance with the commercial license agreement provided with the
      ** Software or, alternatively, in accordance with the terms contained in
      ** a written agreement between you and The Qt Company. For licensing terms
      ** and conditions see https://www.qt.io/terms-conditions. For further
      ** information use the contact form at https://www.qt.io/contact-us.
      **
      ** BSD License Usage
      ** Alternatively, you may use this file under the terms of the BSD license
      ** as follows:
      **
      ** "Redistribution and use in source and binary forms, with or without
      ** modification, are permitted provided that the following conditions are
      ** met:
      **   * Redistributions of source code must retain the above copyright
      **     notice, this list of conditions and the following disclaimer.
      **   * Redistributions in binary form must reproduce the above copyright
      **     notice, this list of conditions and the following disclaimer in
      **     the documentation and/or other materials provided with the
      **     distribution.
      **   * Neither the name of The Qt Company Ltd nor the names of its
      **     contributors may be used to endorse or promote products derived
      **     from this software without specific prior written permission.
      **
      **
      ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
      ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
      ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
      ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
      ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
      ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
      ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
      ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
      **
      ** $QT_END_LICENSE$
      **
      ****************************************************************************/

      #ifndef APPMODEL_H
      #define APPMODEL_H

      #include <QtCore/QObject>
      #include <QtCore/QString>
      #include <QtNetwork/QNetworkReply>
      #include <QtQml/QQmlListProperty>

      #include <QtPositioning/QGeoPositionInfoSource>

      class WeatherData : public QObject {
          Q_OBJECT
          Q_PROPERTY(QString dayOfWeek
                     READ dayOfWeek WRITE setDayOfWeek
                     NOTIFY dataChanged)
          Q_PROPERTY(QString weatherIcon
                     READ weatherIcon WRITE setWeatherIcon
                     NOTIFY dataChanged)
          Q_PROPERTY(QString weatherDescription
                     READ weatherDescription WRITE setWeatherDescription
                     NOTIFY dataChanged)
          Q_PROPERTY(QString temperature
                     READ temperature WRITE setTemperature
                     NOTIFY dataChanged)

      public:
          explicit WeatherData(QObject *parent = 0);
          WeatherData(const WeatherData &other);

          QString dayOfWeek() const;
          QString weatherIcon() const;
          QString weatherDescription() const;
          QString temperature() const;

          void setDayOfWeek(const QString &value);
          void setWeatherIcon(const QString &value);
          void setWeatherDescription(const QString &value);
          void setTemperature(const QString &value);

      signals:
          void dataChanged();
      private:
          QString m_dayOfWeek;
          QString m_weather;
          QString m_weatherDescription;
          QString m_temperature;
      };

      Q_DECLARE_METATYPE(WeatherData)

      class AppModelPrivate;
      class AppModel : public QObject
      {
          Q_OBJECT
          Q_PROPERTY(bool ready
                     READ ready
                     NOTIFY readyChanged)
          Q_PROPERTY(bool hasSource
                     READ hasSource
                     NOTIFY readyChanged)
          Q_PROPERTY(bool hasValidCity
                     READ hasValidCity
                     NOTIFY cityChanged)
          Q_PROPERTY(bool hasValidWeather
                     READ hasValidWeather
                     NOTIFY weatherChanged)
          Q_PROPERTY(bool useGps
                     READ useGps WRITE setUseGps
                     NOTIFY useGpsChanged)
          Q_PROPERTY(QString city
                     READ city WRITE setCity
                     NOTIFY cityChanged)
          Q_PROPERTY(WeatherData *weather
                     READ weather
                     NOTIFY weatherChanged)
          Q_PROPERTY(QQmlListProperty<WeatherData> forecast
                     READ forecast
                     NOTIFY weatherChanged)

      public:
          explicit AppModel(QObject *parent = 0);
          ~AppModel();

          bool ready() const;
          bool hasSource() const;
          bool useGps() const;
          bool hasValidCity() const;
          bool hasValidWeather() const;
          void setUseGps(bool value);
          void hadError(bool tryAgain);

          QString city() const;
          void setCity(const QString &value);

          WeatherData *weather() const;
          QQmlListProperty<WeatherData> forecast() const;

      public slots:
          Q_INVOKABLE void refreshWeather();

      private slots:
          void queryCity();
          void networkSessionOpened();
          void positionUpdated(QGeoPositionInfo gpsPos);
          void positionError(QGeoPositionInfoSource::Error e);
          void handleGeoNetworkData(QNetworkReply *networkReply);
          void handleWeatherNetworkData(QNetworkReply *networkReply);
          void handleForecastNetworkData(QNetworkReply *networkReply);

      signals:
          void readyChanged();
          void useGpsChanged();
          void cityChanged();
          void weatherChanged();

      private:
          AppModelPrivate *d;

      };

      #endif // APPMODEL_H