main.cpp Example File | Qt WebChannel 5.9

Qt 5.9 | Qt WebChannel | Qt WebChannel Standalone Example | main.cpp Example File

Qt 5.9.4 Reference Documentation

# 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.
      **
      ** $QT_BEGIN_LICENSE:BSD$
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      ** information use the contact form at https://www.qt.io/contact-us.
      **
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      ** 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
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      ****************************************************************************/

      #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();
      }