mainwindow.cpp Example File | Qt Widgets 5.12.12

- Qt 5.12
- Qt Widgets
- Order Form Example
- mainwindow.cpp Example File
- Qt 5.12.12 Reference Documentation

# mainwindow.cpp Example File

richtext/orderform/mainwindow.cpp

     /****************************************************************************
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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
     }