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     2 **

     3 ** Copyright (C) 2009 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 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

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    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    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

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

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    24 ** In addition, as a special exception, Nokia gives you certain additional

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    38 ** $QT_END_LICENSE$

    39 **

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

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

    64     tableWidget->setDragEnabled(true);

    65     tableWidget->setAcceptDrops(true);

    66     tableWidget->setDropIndicatorShown(true);

    67 

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

    69     tableWidget->setHorizontalHeaderItem(0, valuesHeaderItem);

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

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

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

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

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

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

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

    77     tableWidget->setHorizontalHeaderItem(1, squaresHeaderItem);

    78     tableWidget->setHorizontalHeaderItem(2, cubesHeaderItem);

    79 

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

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

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

    83 

    84     setupTableItems();

    85 

    86     setCentralWidget(tableWidget);

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

    88 }

    89 

    90 void MainWindow::setupTableItems()

    91 {

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

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

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

    95         pow((float)row, (float)column+1)));

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

    97         }

    98     }

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

   100         QTableWidgetItem *newItem = new QTableWidgetItem;

   101         newItem->setFlags(Qt::ItemIsEnabled | Qt::ItemIsUserCheckable);

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

   103     }

   104 }

   105 

   106 void MainWindow::averageItems()

   107 {

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

   109     QTableWidgetItem *item;

   110     int number = 0;

   111     double total = 0;

   112 

   113     foreach (item, selected) {

   114         bool ok;

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

   116         

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

   118             total += value;

   119             number++;

   120         }

   121     }

   122     if (number > 0)

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

   124 }

   125 

   126 void MainWindow::sumItems()

   127 {

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

   129     QTableWidgetItem *item;

   130     int number = 0;

   131     double total = 0;

   132 

   133     foreach (item, selected) {

   134         bool ok;

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

   136 

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

   138             total += value;

   139             number++;

   140         }

   141     }

   142     if (number > 0)

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

   144 }