mainwindow.cpp Example File

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  #include <QtWidgets>
  #if defined(QT_PRINTSUPPORT_LIB)
  #include <QtPrintSupport/qtprintsupportglobal.h>
  #if QT_CONFIG(printdialog)
  #include <QPrinter>
  #include <QPrintDialog>
  #endif
  #endif

  #include "detailsdialog.h"
  #include "mainwindow.h"

  MainWindow::MainWindow()
  {
      QMenu *fileMenu = new QMenu(tr("&File"), this);
      QAction *newAction = fileMenu->addAction(tr("&New..."));
      newAction->setShortcuts(QKeySequence::New);
      printAction = fileMenu->addAction(tr("&Print..."), this, SLOT(printFile()));
      printAction->setShortcuts(QKeySequence::Print);
      printAction->setEnabled(false);
      QAction *quitAction = fileMenu->addAction(tr("E&xit"));
      quitAction->setShortcuts(QKeySequence::Quit);
      menuBar()->addMenu(fileMenu);

      letters = new QTabWidget;

      connect(newAction, &QAction::triggered, this, &MainWindow::openDialog);
      connect(quitAction, &QAction::triggered, this, &MainWindow::close);

      setCentralWidget(letters);
      setWindowTitle(tr("Order Form"));
  }

  void MainWindow::createLetter(const QString &name, const QString &address,
                                QList<QPair<QString,int> > orderItems,
                                bool sendOffers)
  {
      QTextEdit *editor = new QTextEdit;
      int tabIndex = letters->addTab(editor, name);
      letters->setCurrentIndex(tabIndex);

      QTextCursor cursor(editor->textCursor());
      cursor.movePosition(QTextCursor::Start);
      QTextFrame *topFrame = cursor.currentFrame();
      QTextFrameFormat topFrameFormat = topFrame->frameFormat();
      topFrameFormat.setPadding(16);
      topFrame->setFrameFormat(topFrameFormat);

      QTextCharFormat textFormat;
      QTextCharFormat boldFormat;
      boldFormat.setFontWeight(QFont::Bold);

      QTextFrameFormat referenceFrameFormat;
      referenceFrameFormat.setBorder(1);
      referenceFrameFormat.setPadding(8);
      referenceFrameFormat.setPosition(QTextFrameFormat::FloatRight);
      referenceFrameFormat.setWidth(QTextLength(QTextLength::PercentageLength, 40));
      cursor.insertFrame(referenceFrameFormat);

      cursor.insertText("A company", boldFormat);
      cursor.insertBlock();
      cursor.insertText("321 City Street");
      cursor.insertBlock();
      cursor.insertText("Industry Park");
      cursor.insertBlock();
      cursor.insertText("Another country");

      cursor.setPosition(topFrame->lastPosition());

      cursor.insertText(name, textFormat);
      QString line;
      foreach (line, address.split("\n")) {
          cursor.insertBlock();
          cursor.insertText(line);
      }
      cursor.insertBlock();
      cursor.insertBlock();

      QDate date = QDate::currentDate();
      cursor.insertText(tr("Date: %1").arg(date.toString("d MMMM yyyy")),
                        textFormat);
      cursor.insertBlock();

      QTextFrameFormat bodyFrameFormat;
      bodyFrameFormat.setWidth(QTextLength(QTextLength::PercentageLength, 100));
      cursor.insertFrame(bodyFrameFormat);

      cursor.insertText(tr("I would like to place an order for the following "
                           "items:"), textFormat);
      cursor.insertBlock();
      cursor.insertBlock();

      QTextTableFormat orderTableFormat;
      orderTableFormat.setAlignment(Qt::AlignHCenter);
      QTextTable *orderTable = cursor.insertTable(1, 2, orderTableFormat);

      QTextFrameFormat orderFrameFormat = cursor.currentFrame()->frameFormat();
      orderFrameFormat.setBorder(1);
      cursor.currentFrame()->setFrameFormat(orderFrameFormat);

      cursor = orderTable->cellAt(0, 0).firstCursorPosition();
      cursor.insertText(tr("Product"), boldFormat);
      cursor = orderTable->cellAt(0, 1).firstCursorPosition();
      cursor.insertText(tr("Quantity"), boldFormat);

      for (int i = 0; i < orderItems.count(); ++i) {
          QPair<QString,int> item = orderItems[i];
          int row = orderTable->rows();

          orderTable->insertRows(row, 1);
          cursor = orderTable->cellAt(row, 0).firstCursorPosition();
          cursor.insertText(item.first, textFormat);
          cursor = orderTable->cellAt(row, 1).firstCursorPosition();
          cursor.insertText(QString("%1").arg(item.second), textFormat);
      }

      cursor.setPosition(topFrame->lastPosition());

      cursor.insertBlock();
      cursor.insertText(tr("Please update my records to take account of the "
                           "following privacy information:"));
      cursor.insertBlock();

      QTextTable *offersTable = cursor.insertTable(2, 2);

      cursor = offersTable->cellAt(0, 1).firstCursorPosition();
      cursor.insertText(tr("I want to receive more information about your "
                           "company's products and special offers."), textFormat);
      cursor = offersTable->cellAt(1, 1).firstCursorPosition();
      cursor.insertText(tr("I do not want to receive any promotional information "
                           "from your company."), textFormat);

      if (sendOffers)
          cursor = offersTable->cellAt(0, 0).firstCursorPosition();
      else
          cursor = offersTable->cellAt(1, 0).firstCursorPosition();

      cursor.insertText("X", boldFormat);

      cursor.setPosition(topFrame->lastPosition());
      cursor.insertBlock();
      cursor.insertText(tr("Sincerely,"), textFormat);
      cursor.insertBlock();
      cursor.insertBlock();
      cursor.insertBlock();
      cursor.insertText(name);

      printAction->setEnabled(true);
  }

  void MainWindow::createSample()
  {
      DetailsDialog dialog("Dialog with default values", this);
      createLetter("Mr. Smith", "12 High Street\nSmall Town\nThis country",
                   dialog.orderItems(), true);
  }

  void MainWindow::openDialog()
  {
      DetailsDialog dialog(tr("Enter Customer Details"), this);

      if (dialog.exec() == QDialog::Accepted) {
          createLetter(dialog.senderName(), dialog.senderAddress(),
                       dialog.orderItems(), dialog.sendOffers());
      }
  }

  void MainWindow::printFile()
  {
  #if QT_CONFIG(printdialog)
      QTextEdit *editor = static_cast<QTextEdit*>(letters->currentWidget());
      QPrinter printer;

      QPrintDialog dialog(&printer, this);
      dialog.setWindowTitle(tr("Print Document"));
      if (editor->textCursor().hasSelection())
          dialog.addEnabledOption(QAbstractPrintDialog::PrintSelection);
      if (dialog.exec() != QDialog::Accepted) {
          return;
      }

      editor->print(&printer);
  #endif
  }