Qt 5.7 | Qt WebEngine | WebEngine Demo Browser Example | printtopdfdialog.cpp Example File

Qt 5.7.1 Reference Documentation

# printtopdfdialog.cpp Example File

webenginewidgets/demobrowser/printtopdfdialog.cpp

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      #include "printtopdfdialog.h"
      #include "ui_printtopdfdialog.h"

      #include <QtCore/QDir>
      #ifndef QT_NO_PRINTER
      #include <QtPrintSupport/QPageSetupDialog>
      #include <QtPrintSupport/QPrinter>
      #endif // QT_NO_PRINTER
      #include <QtWidgets/QFileDialog>

      PrintToPdfDialog::PrintToPdfDialog(const QString &filePath, QWidget *parent) :
          QDialog(parent),
          currentPageLayout(QPageLayout(QPageSize(QPageSize::A4), QPageLayout::Portrait, QMarginsF(0.0, 0.0, 0.0, 0.0))),
          ui(new Ui::PrintToPdfDialog)
      {
          ui->setupUi(this);
          setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
          connect(ui->chooseFilePathButton, &QToolButton::clicked, this, &PrintToPdfDialog::onChooseFilePathButtonClicked);
      #ifndef QT_NO_PRINTER
          connect(ui->choosePageLayoutButton, &QToolButton::clicked, this, &PrintToPdfDialog::onChoosePageLayoutButtonClicked);
      #else
          ui->choosePageLayoutButton->hide();
      #endif // QT_NO_PRINTER
          updatePageLayoutLabel();
          setFilePath(filePath);
      }

      PrintToPdfDialog::~PrintToPdfDialog()
      {
          delete ui;
      }

      void PrintToPdfDialog::onChoosePageLayoutButtonClicked()
      {
      #ifndef QT_NO_PRINTER
          QPrinter printer;
          printer.setPageLayout(currentPageLayout);

          QPageSetupDialog dlg(&printer, this);
          if (dlg.exec() != QDialog::Accepted)
              return;
          currentPageLayout.setPageSize(printer.pageLayout().pageSize());
          currentPageLayout.setOrientation(printer.pageLayout().orientation());
          updatePageLayoutLabel();
      #endif // QT_NO_PRINTER
      }

      void PrintToPdfDialog::onChooseFilePathButtonClicked()
      {
          QFileInfo fi(filePath());
          QFileDialog dlg(this, tr("Save PDF as"), fi.absolutePath());
          dlg.setAcceptMode(QFileDialog::AcceptSave);
          dlg.setDefaultSuffix(QStringLiteral(".pdf"));
          dlg.selectFile(fi.absoluteFilePath());
          if (dlg.exec() != QDialog::Accepted)
              return;
          setFilePath(dlg.selectedFiles().first());
      }

      QString PrintToPdfDialog::filePath() const
      {
          return QDir::fromNativeSeparators(ui->filePathLineEdit->text());
      }

      void PrintToPdfDialog::setFilePath(const QString &filePath)
      {
          ui->filePathLineEdit->setText(QDir::toNativeSeparators(filePath));
      }

      QPageLayout PrintToPdfDialog::pageLayout() const
      {
          return currentPageLayout;
      }

      void PrintToPdfDialog::updatePageLayoutLabel()
      {
          ui->pageLayoutLabel->setText(QString("%1, %2").arg(
                                         currentPageLayout.pageSize().name()).arg(
                                         currentPageLayout.orientation() == QPageLayout::Portrait
                                         ? tr("Portrait") : tr("Landscape")
                                         ));
      }