Order information dialog : QDialog « Qt « C++

1. C++
2. Qt
3. QDialog

Order information dialog

  

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#ifndef DETAILSDIALOG_H
#define DETAILSDIALOG_H

#include <QDialog>
#include <QList>
#include <QPair>
#include <QString>

QT_BEGIN_NAMESPACE
class QCheckBox;
class QDialogButtonBox;
class QLabel;
class QLineEdit;
class QTableWidget;
class QTextEdit;
class QWidget;
QT_END_NAMESPACE


class DetailsDialog : public QDialog
{
    Q_OBJECT

public:
    DetailsDialog(const QString &title, QWidget *parent);

public slots:
    void verify();

public:
    QList<QPair<QString, int> > orderItems();
    QString senderName() const;
    QString senderAddress() const;
    bool sendOffers();

private:
    void setupItemsTable();

    QLabel *nameLabel;
    QLabel *addressLabel;
    QCheckBox *offersCheckBox;
    QLineEdit *nameEdit;
    QStringList items;
    QTableWidget *itemsTable;
    QTextEdit *addressEdit;
    QDialogButtonBox *buttonBox;
};


#endif








#include <QtGui>

#include "detailsdialog.h"


DetailsDialog::DetailsDialog(const QString &title, QWidget *parent)
    : QDialog(parent)
{
    nameLabel = new QLabel(tr("Name:"));
    addressLabel = new QLabel(tr("Address:"));
    addressLabel->setAlignment(Qt::AlignLeft | Qt::AlignTop);

    nameEdit = new QLineEdit;
    addressEdit = new QTextEdit;

    offersCheckBox = new QCheckBox(tr("Send information about products and "
                                      "special offers"));

    setupItemsTable();

    buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok
                                     | QDialogButtonBox::Cancel);

    connect(buttonBox, SIGNAL(accepted()), this, SLOT(verify()));
    connect(buttonBox, SIGNAL(rejected()), this, SLOT(reject()));



    QGridLayout *mainLayout = new QGridLayout;
    mainLayout->addWidget(nameLabel, 0, 0);
    mainLayout->addWidget(nameEdit, 0, 1);
    mainLayout->addWidget(addressLabel, 1, 0);
    mainLayout->addWidget(addressEdit, 1, 1);
    mainLayout->addWidget(itemsTable, 0, 2, 2, 1);
    mainLayout->addWidget(offersCheckBox, 2, 1, 1, 2);
    mainLayout->addWidget(buttonBox, 3, 0, 1, 3);
    setLayout(mainLayout);

    setWindowTitle(title);
}



void DetailsDialog::setupItemsTable()
{
    items << tr("T-shirt") << tr("Badge") << tr("Reference book")
          << tr("Coffee cup");

    itemsTable = new QTableWidget(items.count(), 2);

    for (int row = 0; row < items.count(); ++row) {
        QTableWidgetItem *name = new QTableWidgetItem(items[row]);
        name->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable);
        itemsTable->setItem(row, 0, name);
        QTableWidgetItem *quantity = new QTableWidgetItem("1");
        itemsTable->setItem(row, 1, quantity);
    }
}



QList<QPair<QString, int> > DetailsDialog::orderItems()
{
    QList<QPair<QString, int> > orderList;

    for (int row = 0; row < items.count(); ++row) {
        QPair<QString, int> item;
        item.first = itemsTable->item(row, 0)->text();
        int quantity = itemsTable->item(row, 1)->data(Qt::DisplayRole).toInt();
        item.second = qMax(0, quantity);
        orderList.append(item);
    }

    return orderList;
}



QString DetailsDialog::senderName() const
{
    return nameEdit->text();
}



QString DetailsDialog::senderAddress() const
{
    return addressEdit->toPlainText();
}
  


bool DetailsDialog::sendOffers()
{
    return offersCheckBox->isChecked();
}



void DetailsDialog::verify()
{
    if (!nameEdit->text().isEmpty() && !addressEdit->toPlainText().isEmpty()) {
        accept();
        return;
    }

    QMessageBox::StandardButton answer;
    answer = QMessageBox::warning(this, tr("Incomplete Form"),
        tr("The form does not contain all the necessary information.\n"
           "Do you want to discard it?"),
        QMessageBox::Yes | QMessageBox::No);

    if (answer == QMessageBox::Yes)
        reject();
}







#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QList>
#include <QMainWindow>
#include <QPair>

QT_BEGIN_NAMESPACE
class QAction;
class QTabWidget;
QT_END_NAMESPACE


class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow();
    void createSample();

public slots:
    void openDialog();
    void printFile();

private:
    void createLetter(const QString &name, const QString &address,
                      QList<QPair<QString,int> > orderItems,
                      bool sendOffers);

    QAction *printAction;
    QTabWidget *letters;
};


#endif







#include <QtGui>

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


MainWindow::MainWindow()
{
    QMenu *fileMenu = new QMenu(tr("&File"), this);
    QAction *newAction = fileMenu->addAction(tr("&New..."));
    newAction->setShortcut(tr("Ctrl+N"));
    printAction = fileMenu->addAction(tr("&Print..."), this, SLOT(printFile()));
    printAction->setShortcut(tr("Ctrl+P"));
    printAction->setEnabled(false);
    QAction *quitAction = fileMenu->addAction(tr("E&xit"));
    quitAction->setShortcut(tr("Ctrl+Q"));
    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
}








#include <QtGui>

#include "mainwindow.h"


int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    MainWindow window;
    window.resize(640, 480);
    window.show();
    window.createSample();
    return app.exec();
}

   
    
  

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