imageanalyzer.h Example File | Qt WebKit Examples 5.5

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- imageanalyzer.h Example File
- Qt 5.5.1 Reference Documentation

# imageanalyzer.h Example File

webkitwidgets/imageanalyzer/imageanalyzer.h

    /****************************************************************************
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    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the examples of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** You may use this file under the terms of the BSD license as follows:
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    #ifndef IMAGEANALYZER_H
    #define IMAGEANALYZER_H

    #include <QFutureWatcher>
    #include <QtWidgets>

    class QNetworkAccessManager;
    class QNetworkReply;
    class QNetworkDiskCache;

    class ImageAnalyzer : public QObject
    {
        Q_OBJECT
    public:
        ImageAnalyzer(QNetworkDiskCache * netcache, QObject * parent=0);

        QRgb lastResults();
        float lastRed();
        float lastGreen();
        float lastBlue();
        bool isBusy();
        Q_PROPERTY(bool busy READ isBusy);
        Q_PROPERTY(float red READ lastRed);
        Q_PROPERTY(float green READ lastGreen);
        Q_PROPERTY(float blue READ lastBlue);
        ~ImageAnalyzer();

    public slots:
        /*! initiates analysis of all the urls in the list */
        void startAnalysis(const QStringList & urls);

    signals:
        void finishedAnalysis();
        void updateProgress(int completed, int total);

    private slots:
        void handleReply(QNetworkReply*);
        void doneProcessing();
        void progressStatus(int);

    private:
        QRgb processImages();
        void fetchURLs();
        void queueImage(QImage img);

    private:
        QNetworkAccessManager* m_network;
        QNetworkDiskCache* m_cache;
        QStringList m_URLQueue;
        QList<QImage> m_imageQueue;
        int m_outstandingFetches;
        QFutureWatcher<QRgb> * m_watcher;
    };

    QRgb averageRGB(const QImage &img);

    #endif