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#include <QtGui>

#include "mainwindow.h"

MainWindow::MainWindow()

{

    QMenu *fileMenu = new QMenu(tr("&File"));

    QAction *quitAction = fileMenu->addAction(tr("E&xit"));

    quitAction->setShortcut(tr("Ctrl+Q"));

    QMenu *tableMenu = new QMenu(tr("&Table"));

    QAction *tableWidthAction = tableMenu->addAction(tr("Change Table &Width"));

    QAction *tableHeightAction = tableMenu->addAction(tr("Change Table &Height"));

    menuBar()->addMenu(fileMenu);

    menuBar()->addMenu(tableMenu);

//! [0]

    tableWidget = new QTableWidget(this);

//! [0]

    tableWidget->setSelectionMode(QAbstractItemView::ExtendedSelection);

    connect(quitAction, SIGNAL(triggered()), this, SLOT(close()));

    connect(tableWidthAction, SIGNAL(triggered()), this, SLOT(changeWidth()));

    connect(tableHeightAction, SIGNAL(triggered()), this, SLOT(changeHeight()));

    setupTableItems();

    setCentralWidget(tableWidget);

    setWindowTitle(tr("Table Widget Resizing"));

}

void MainWindow::setupTableItems()

{

//! [1]

    tableWidget->setRowCount(10);

    tableWidget->setColumnCount(5);

//! [1]

    for (int row = 0; row < tableWidget->rowCount(); ++row) {

        for (int column = 0; column < tableWidget->columnCount(); ++column) {

//! [2]

    QTableWidgetItem *newItem = new QTableWidgetItem(tr("%1").arg(

        (row+1)*(column+1)));

    tableWidget->setItem(row, column, newItem);

//! [2]

        }

    }

}

void MainWindow::changeWidth()

{

    bool ok;

    int newWidth = QInputDialog::getInteger(this, tr("Change table width"),

        tr("Input the number of columns required (1-20):"),

        tableWidget->columnCount(), 1, 20, 1, &ok);

    if (ok)

        tableWidget->setColumnCount(newWidth);

}

void MainWindow::changeHeight()

{

    bool ok;

    int newHeight = QInputDialog::getInteger(this, tr("Change table height"),

        tr("Input the number of rows required (1-20):"),

        tableWidget->rowCount(), 1, 20, 1, &ok);

    if (ok)

        tableWidget->setRowCount(newHeight);

}