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** This file is part of the documentation of the Qt Toolkit.
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#ifndef WINDOW_H
#define WINDOW_H
#include <QMainWindow>
class QAction;
class QTableWidget;
class QTableWidgetItem;
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
MainWindow();
public slots:
void averageItems();
void sumItems();
private:
void setupTableItems();
QAction *removeAction;
QTableWidget *tableWidget;
};
#endif
#include <QtGui>
#include "math.h"
#include "mainwindow.h"
MainWindow::MainWindow()
{
QMenu *fileMenu = new QMenu(tr("&File"));
QAction *quitAction = fileMenu->addAction(tr("E&xit"));
quitAction->setShortcut(tr("Ctrl+Q"));
QMenu *itemsMenu = new QMenu(tr("&Items"));
QAction *sumItemsAction = itemsMenu->addAction(tr("&Sum Items"));
QAction *averageItemsAction = itemsMenu->addAction(tr("&Average Items"));
menuBar()->addMenu(fileMenu);
menuBar()->addMenu(itemsMenu);
tableWidget = new QTableWidget(12, 3, this);
tableWidget->setSelectionMode(QAbstractItemView::ExtendedSelection);
tableWidget->setDragEnabled(true);
tableWidget->setAcceptDrops(true);
tableWidget->setDropIndicatorShown(true);
QTableWidgetItem *valuesHeaderItem = new QTableWidgetItem(tr("Values"));
tableWidget->setHorizontalHeaderItem(0, valuesHeaderItem);
valuesHeaderItem->setTextAlignment(Qt::AlignVCenter);
QTableWidgetItem *squaresHeaderItem = new QTableWidgetItem(tr("Squares"));
squaresHeaderItem->setIcon(QIcon(QPixmap(":/Images/squared.png")));
squaresHeaderItem->setTextAlignment(Qt::AlignVCenter);
QTableWidgetItem *cubesHeaderItem = new QTableWidgetItem(tr("Cubes"));
cubesHeaderItem->setIcon(QIcon(QPixmap(":/Images/cubed.png")));
cubesHeaderItem->setTextAlignment(Qt::AlignVCenter);
tableWidget->setHorizontalHeaderItem(1, squaresHeaderItem);
tableWidget->setHorizontalHeaderItem(2, cubesHeaderItem);
connect(quitAction, SIGNAL(triggered()), this, SLOT(close()));
connect(sumItemsAction, SIGNAL(triggered()), this, SLOT(sumItems()));
connect(averageItemsAction, SIGNAL(triggered()), this, SLOT(averageItems()));
setupTableItems();
setCentralWidget(tableWidget);
setWindowTitle(tr("Table Widget"));
}
void MainWindow::setupTableItems()
{
for (int row = 0; row < tableWidget->rowCount()-1; ++row) {
for (int column = 0; column < tableWidget->columnCount(); ++column) {
QTableWidgetItem *newItem = new QTableWidgetItem(tr("%1").arg(
pow((float)row, (float)column+1)));
tableWidget->setItem(row, column, newItem);
}
}
for (int column = 0; column < tableWidget->columnCount(); ++column) {
QTableWidgetItem *newItem = new QTableWidgetItem;
newItem->setFlags(Qt::ItemIsEnabled | Qt::ItemIsUserCheckable);
tableWidget->setItem(tableWidget->rowCount()-1, column, newItem);
}
}
void MainWindow::averageItems()
{
QList<QTableWidgetItem *> selected = tableWidget->selectedItems();
QTableWidgetItem *item;
int number = 0;
double total = 0;
foreach (item, selected) {
bool ok;
double value = item->text().toDouble(&ok);
if (ok && !item->text().isEmpty()) {
total += value;
number++;
}
}
if (number > 0)
tableWidget->currentItem()->setText(QString::number(total/number));
}
void MainWindow::sumItems()
{
QList<QTableWidgetItem *> selected = tableWidget->selectedItems();
QTableWidgetItem *item;
int number = 0;
double total = 0;
foreach (item, selected) {
bool ok;
double value = item->text().toDouble(&ok);
if (ok && !item->text().isEmpty()) {
total += value;
number++;
}
}
if (number > 0)
tableWidget->currentItem()->setText(QString::number(total));
}
#include <QtGui>
#include "mainwindow.h"
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
MainWindow *window = new MainWindow;
window->show();
return app.exec();
}
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