mainwindow.cpp Example File

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 #include <QtWidgets>
 #include <QPrinter>
 #include <QPrintDialog>

 #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, SIGNAL(triggered()), this, SLOT(openDialog()));
     connect(quitAction, SIGNAL(triggered()), this, SLOT(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()
 {
 #ifndef QT_NO_PRINTER
     QTextEdit *editor = static_cast<QTextEdit*>(letters->currentWidget());
     QPrinter printer;

     QPrintDialog *dialog = new QPrintDialog(&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
 }