html2pdf.cpp Example File

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  #include <QApplication>
  #include <QCommandLineParser>
  #include <QFile>
  #include <QTextStream>
  #include <QWebEnginePage>

  #include <functional>

  using namespace std;
  using namespace std::placeholders;

  class Html2PdfConverter : public QObject
  {
      Q_OBJECT
  public:
      explicit Html2PdfConverter(QString inputPath, QString outputPath);
      int run();

  private slots:
      void loadFinished(bool ok);
      void pdfPrintingFinished(const QString &filePath, bool success);

  private:
      QString m_inputPath;
      QString m_outputPath;
      QScopedPointer<QWebEnginePage> m_page;
  };

  Html2PdfConverter::Html2PdfConverter(QString inputPath, QString outputPath)
      : m_inputPath(move(inputPath))
      , m_outputPath(move(outputPath))
      , m_page(new QWebEnginePage)
  {
      connect(m_page.data(), &QWebEnginePage::loadFinished,
              this, &Html2PdfConverter::loadFinished);
      connect(m_page.data(), &QWebEnginePage::pdfPrintingFinished,
              this, &Html2PdfConverter::pdfPrintingFinished);
  }

  int Html2PdfConverter::run()
  {
      m_page->load(QUrl::fromUserInput(m_inputPath));
      return QApplication::exec();
  }

  void Html2PdfConverter::loadFinished(bool ok)
  {
      if (!ok) {
          QTextStream(stderr)
              << tr("failed to load URL '%1'").arg(m_inputPath) << "\n";
          QCoreApplication::exit(1);
          return;
      }

      m_page->printToPdf(m_outputPath);
  }

  void Html2PdfConverter::pdfPrintingFinished(const QString &filePath, bool success)
  {
      if (!success) {
          QTextStream(stderr)
              << tr("failed to print to output file '%1'").arg(filePath) << "\n";
          QCoreApplication::exit(1);
      } else {
          QCoreApplication::quit();
      }
  }

  int main(int argc, char *argv[])
  {
      QApplication app(argc, argv);
      QCoreApplication::setApplicationName("html2pdf");
      QCoreApplication::setApplicationVersion(QT_VERSION_STR);

      QCommandLineParser parser;
      parser.setApplicationDescription(
          QCoreApplication::translate("main", "Converts the web page INPUT into the PDF file OUTPUT."));
      parser.addHelpOption();
      parser.addVersionOption();
      parser.addPositionalArgument(
          QCoreApplication::translate("main", "INPUT"),
          QCoreApplication::translate("main", "Input URL for PDF conversion."));
      parser.addPositionalArgument(
          QCoreApplication::translate("main", "OUTPUT"),
          QCoreApplication::translate("main", "Output file name for PDF conversion."));

      parser.process(QCoreApplication::arguments());

      const QStringList requiredArguments = parser.positionalArguments();
      if (requiredArguments.size() != 2)
          parser.showHelp(1);

      Html2PdfConverter converter(requiredArguments.at(0), requiredArguments.at(1));
      return converter.run();
  }

  #include "html2pdf.moc"