imageanalyzer.h Example File

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 #ifndef IMAGEANALYZER_H
 #define IMAGEANALYZER_H
 #include <QFutureWatcher>
 #include <QtGui>

 QT_FORWARD_DECLARE_CLASS(QNetworkAccessManager)
 QT_FORWARD_DECLARE_CLASS(QNetworkReply)
 QT_FORWARD_DECLARE_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