mainwindow.cpp Example File | Qt WebKit Examples 5.5

- Qt 5.5
- Qt WebKit Examples
- The Webkit Bridge Tutorial - Hybrid Client Application
- mainwindow.cpp Example File
- Qt 5.5.1 Reference Documentation

# mainwindow.cpp Example File

webkitwidgets/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.
    **
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    #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(QStandardPaths::writableLocation(QStandardPaths::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);
    }