mainwindow.cpp Example File

webkit/imageanalyzer/mainwindow.cpp
 /****************************************************************************
 **
 ** 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:
 **
 ** "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."
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/
 #include "mainwindow.h"
 #include "imageanalyzer.h"

 #include <QWebFrame>
 #include <QWebElementCollection>
 #include <QNetworkDiskCache>

 /*
  * Default Constructor
  */
 MainWin::MainWin(QWidget * parent) : QWebView(parent)
 {
     m_network = new QNetworkAccessManager(this);
     m_cache = new QNetworkDiskCache(this);
     m_cache->setCacheDirectory(QDesktopServices::storageLocation(QDesktopServices::CacheLocation) + "/imageanalyzer");
     m_cache->setMaximumCacheSize(1000000); //set the cache to 10megs
     m_network->setCache(m_cache);
     page()->setNetworkAccessManager(m_network);

     m_analyzer = new ImageAnalyzer(m_cache, this);

     // Signal is emitted before frame loads any web content:
     QObject::connect(page()->mainFrame(), SIGNAL(javaScriptWindowObjectCleared()),
                      this, SLOT(addJSObject()));

     // qrc:// URLs refer to resources. See imagenalayzer.qrc
     QUrl startURL = QUrl("qrc:/index.html");

     // Load web content now!
     setUrl(startURL);
 }

 void MainWin::addJSObject() {
     // Add pAnalyzer to JavaScript Frame as member "imageAnalyzer".
     page()->mainFrame()->addToJavaScriptWindowObject(QString("imageAnalyzer"), m_analyzer);
 }