| /**************************************************************************** |
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| ** Copyright (C) 2016 The Qt Company Ltd. |
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| ** This file is part of the documentation of the Qt Toolkit. |
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| |
| #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)); |
| } |