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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** 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:
**
** "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 Nokia Corporation and its Subsidiary(-ies) 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 IMAGEANALYZER_H
#define IMAGEANALYZER_H
#include <QFutureWatcher>
#include <QtGui>
QT_BEGIN_NAMESPACE
class QNetworkAccessManager;
class QNetworkReply;
class QNetworkDiskCache;
QT_END_NAMESPACE
//! [ ImageAnalyzer - public interface ]
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);
//! [ ImageAnalyzer - public interface ]
private slots:
void handleReply(QNetworkReply*);
void doneProcessing();
void progressStatus(int);
private:
QRgb processImages();
void fetchURLs();
void queueImage(QImage img);
//! [ ImageAnalyzer - private members ]
private:
QNetworkAccessManager* m_network;
QNetworkDiskCache* m_cache;
QStringList m_URLQueue;
QList<QImage> m_imageQueue;
int m_outstandingFetches;
QFutureWatcher<QRgb> * m_watcher;
//! [ ImageAnalyzer - private members ]
};
QRgb averageRGB(const QImage &img);
#endif
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