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     2 **

     3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the documentation of the Qt Toolkit.

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     9 ** $QT_BEGIN_LICENSE:LGPL$

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    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

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    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

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    38 ** $QT_END_LICENSE$

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    40 ****************************************************************************/

    41 

    42 #include <QtGui>

    43 #include "math.h"

    44 

    45 #include "mainwindow.h"

    46 

    47 MainWindow::MainWindow()

    48 {

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

    50 

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

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

    53 

    54     QMenu *itemsMenu = new QMenu(tr("&Items"));

    55 

    56     QAction *sumItemsAction = itemsMenu->addAction(tr("&Sum Items"));

    57     QAction *averageItemsAction = itemsMenu->addAction(tr("&Average Items"));

    58 

    59     menuBar()->addMenu(fileMenu);

    60     menuBar()->addMenu(itemsMenu);

    61 

    62 //! [0]

    63     tableWidget = new QTableWidget(12, 3, this);

    64 //! [0]

    65     tableWidget->setSelectionMode(QAbstractItemView::ExtendedSelection);

    66 

    67 //! [1]

    68     QTableWidgetItem *valuesHeaderItem = new QTableWidgetItem(tr("Values"));

    69     tableWidget->setHorizontalHeaderItem(0, valuesHeaderItem);

    70 //! [1]

    71     valuesHeaderItem->setTextAlignment(Qt::AlignVCenter);

    72     QTableWidgetItem *squaresHeaderItem = new QTableWidgetItem(tr("Squares"));

    73     squaresHeaderItem->setIcon(QIcon(QPixmap(":/Images/squared.png")));

    74     squaresHeaderItem->setTextAlignment(Qt::AlignVCenter);

    75 //! [2]

    76     QTableWidgetItem *cubesHeaderItem = new QTableWidgetItem(tr("Cubes"));

    77     cubesHeaderItem->setIcon(QIcon(QPixmap(":/Images/cubed.png")));

    78     cubesHeaderItem->setTextAlignment(Qt::AlignVCenter);

    79 //! [2]

    80     tableWidget->setHorizontalHeaderItem(1, squaresHeaderItem);

    81     tableWidget->setHorizontalHeaderItem(2, cubesHeaderItem);

    82 

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

    84     connect(sumItemsAction, SIGNAL(triggered()), this, SLOT(sumItems()));

    85     connect(averageItemsAction, SIGNAL(triggered()), this, SLOT(averageItems()));

    86 

    87     setupTableItems();

    88 

    89     setCentralWidget(tableWidget);

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

    91 }

    92 

    93 void MainWindow::setupTableItems()

    94 {

    95     for (int row = 0; row < tableWidget->rowCount()-1; ++row) {

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

    97 //! [3]

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

    99         pow(row, column+1)));

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

   101 //! [3]

   102         }

   103     }

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

   105         QTableWidgetItem *newItem = new QTableWidgetItem;

   106         newItem->setFlags(Qt::ItemIsEnabled);

   107         tableWidget->setItem(tableWidget->rowCount()-1, column, newItem);

   108     }

   109 }

   110 

   111 void MainWindow::averageItems()

   112 {

   113     QList<QTableWidgetItem *> selected = tableWidget->selectedItems();

   114     QTableWidgetItem *item;

   115     int number = 0;

   116     double total = 0;

   117 

   118     foreach (item, selected) {

   119         bool ok;

   120         double value = item->text().toDouble(&ok);

   121         

   122         if (ok && !item->text().isEmpty()) {

   123             total += value;

   124             number++;

   125         }

   126     }

   127     if (number > 0)

   128         tableWidget->currentItem()->setText(QString::number(total/number));

   129 }

   130 

   131 void MainWindow::sumItems()

   132 {

   133 //! [4]

   134     QList<QTableWidgetItem *> selected = tableWidget->selectedItems();

   135     QTableWidgetItem *item;

   136     int number = 0;

   137     double total = 0;

   138 

   139     foreach (item, selected) {

   140         bool ok;

   141         double value = item->text().toDouble(&ok);

   142 

   143         if (ok && !item->text().isEmpty()) {

   144             total += value;

   145             number++;

   146         }

   147     }

   148 //! [4]

   149     if (number > 0)

   150         tableWidget->currentItem()->setText(QString::number(total));

   151 }