main.cpp Example File | Qt WebView 5.6

Qt 5.6 | Qt WebView | Qt WebView Examples - Minibrowser | main.cpp Example File

Qt 5.6.2 Reference Documentation

# main.cpp Example File

minibrowser/main.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.
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      **     notice, this list of conditions and the following disclaimer in
      **     the documentation and/or other materials provided with the
      **     distribution.
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      **     contributors may be used to endorse or promote products derived
      **     from this software without specific prior written permission.
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      #include <QtCore/QUrl>
      #include <QtCore/QCommandLineOption>
      #include <QtCore/QCommandLineParser>
      #include <QGuiApplication>
      #include <QStyleHints>
      #include <QScreen>
      #include <QQmlApplicationEngine>
      #include <QtQml/QQmlContext>
      #include <QtWebView/QtWebView>

      // Workaround: As of Qt 5.4 QtQuick does not expose QUrl::fromUserInput.
      class Utils : public QObject {
          Q_OBJECT
      public:
          Utils(QObject* parent = 0) : QObject(parent) { }
          Q_INVOKABLE static QUrl fromUserInput(const QString& userInput);
      };

      QUrl Utils::fromUserInput(const QString& userInput)
      {
          if (userInput.isEmpty())
              return QUrl::fromUserInput("about:blank");
          const QUrl result = QUrl::fromUserInput(userInput);
          return result.isValid() ? result : QUrl::fromUserInput("about:blank");
      }

      #include "main.moc"

      int main(int argc, char *argv[])
      {
          QGuiApplication app(argc, argv);
          QtWebView::initialize();
          QGuiApplication::setApplicationDisplayName(QCoreApplication::translate("main",
                                                                                 "QtWebView Example"));
          QCommandLineParser parser;
          QCoreApplication::setApplicationVersion(QT_VERSION_STR);
          parser.setApplicationDescription(QGuiApplication::applicationDisplayName());
          parser.addHelpOption();
          parser.addVersionOption();
          parser.addPositionalArgument("url", "The initial URL to open.");
          QStringList arguments = app.arguments();
      #ifdef Q_OS_WINRT
          arguments.removeAt(1); // The launcher always passes in the -ServerName parameter, breaking the command line parser
      #endif
          parser.process(arguments);
          const QString initialUrl = parser.positionalArguments().isEmpty() ?
              QStringLiteral("qt.io") : parser.positionalArguments().first();

          QQmlApplicationEngine engine;
          QQmlContext *context = engine.rootContext();
          context->setContextProperty(QStringLiteral("utils"), new Utils(&engine));
          context->setContextProperty(QStringLiteral("initialUrl"),
                                      Utils::fromUserInput(initialUrl));
          QRect geometry = QGuiApplication::primaryScreen()->availableGeometry();
          if (!QGuiApplication::styleHints()->showIsFullScreen()) {
              const QSize size = geometry.size() * 4 / 5;
              const QSize offset = (geometry.size() - size) / 2;
              const QPoint pos = geometry.topLeft() + QPoint(offset.width(), offset.height());
              geometry = QRect(pos, size);
          }
          context->setContextProperty(QStringLiteral("initialX"), geometry.x());
          context->setContextProperty(QStringLiteral("initialY"), geometry.y());
          context->setContextProperty(QStringLiteral("initialWidth"), geometry.width());
          context->setContextProperty(QStringLiteral("initialHeight"), geometry.height());

          engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
          if (engine.rootObjects().isEmpty())
              return -1;

          return app.exec();
      }