main.cpp Example File

standalone/main.cpp

  /****************************************************************************
  **
  ** Copyright (C) 2016 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Milian Wolff <milian.wolff@kdab.com>
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the QtWebChannel module of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:BSD$
  ** Commercial License Usage
  ** Licensees holding valid commercial Qt licenses may use this file in
  ** accordance with the commercial license agreement provided with the
  ** Software or, alternatively, in accordance with the terms contained in
  ** a written agreement between you and The Qt Company. For licensing terms
  ** and conditions see https://www.qt.io/terms-conditions. For further
  ** information use the contact form at https://www.qt.io/contact-us.
  **
  ** BSD License Usage
  ** Alternatively, 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 "dialog.h"
  #include "core.h"
  #include "../shared/websocketclientwrapper.h"
  #include "../shared/websockettransport.h"

  #include <QApplication>
  #include <QDesktopServices>
  #include <QDialog>
  #include <QDir>
  #include <QFileInfo>
  #include <QUrl>
  #include <QWebChannel>
  #include <QWebSocketServer>

  int main(int argc, char** argv)
  {
      QApplication app(argc, argv);

      QFileInfo jsFileInfo(QDir::currentPath() + "/qwebchannel.js");

      if (!jsFileInfo.exists())
          QFile::copy(":/qtwebchannel/qwebchannel.js",jsFileInfo.absoluteFilePath());

      // setup the QWebSocketServer
      QWebSocketServer server(QStringLiteral("QWebChannel Standalone Example Server"), QWebSocketServer::NonSecureMode);
      if (!server.listen(QHostAddress::LocalHost, 12345)) {
          qFatal("Failed to open web socket server.");
          return 1;
      }

      // wrap WebSocket clients in QWebChannelAbstractTransport objects
      WebSocketClientWrapper clientWrapper(&server);

      // setup the channel
      QWebChannel channel;
      QObject::connect(&clientWrapper, &WebSocketClientWrapper::clientConnected,
                       &channel, &QWebChannel::connectTo);

      // setup the UI
      Dialog dialog;

      // setup the core and publish it to the QWebChannel
      Core core(&dialog);
      channel.registerObject(QStringLiteral("core"), &core);

      // open a browser window with the client HTML page
      QUrl url = QUrl::fromLocalFile(BUILD_DIR "/index.html");
      QDesktopServices::openUrl(url);

      dialog.displayMessage(Dialog::tr("Initialization complete, opening browser at %1.").arg(url.toDisplayString()));
      dialog.show();

      return app.exec();
  }