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<td >Qt 5.12</td><td ><a href="qtdatavisualization-index.html">Qt Data Visualization</a></td><td ><a href="qtdatavisualization-itemmodel-example.html">Item Model Example</a></td><td >main.cpp Example File</td></tr></table><table class="buildversion"><tr>
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<h1 class="title">main.cpp Example File</h1>
<span class="subtitle">itemmodel/main.cpp</span>
<!-- $$$itemmodel/main.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp">
<span class="comment">/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Data Visualization module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
<span class="preprocessor">#include <QtDataVisualization/q3dbars.h></span>
<span class="preprocessor">#include <QtDataVisualization/qcategory3daxis.h></span>
<span class="preprocessor">#include <QtDataVisualization/qitemmodelbardataproxy.h></span>
<span class="preprocessor">#include <QtDataVisualization/qvalue3daxis.h></span>
<span class="preprocessor">#include <QtDataVisualization/q3dscene.h></span>
<span class="preprocessor">#include <QtDataVisualization/q3dcamera.h></span>
<span class="preprocessor">#include <QtDataVisualization/qbar3dseries.h></span>
<span class="preprocessor">#include <QtDataVisualization/q3dtheme.h></span>
<span class="preprocessor">#include <QtWidgets/QApplication></span>
<span class="preprocessor">#include <QtWidgets/QVBoxLayout></span>
<span class="preprocessor">#include <QtWidgets/QTableWidget></span>
<span class="preprocessor">#include <QtGui/QScreen></span>
<span class="preprocessor">#include <QtCore/QRandomGenerator></span>
<span class="preprocessor">#include <QtCore/QTimer></span>
<span class="preprocessor">#include <QtGui/QFont></span>
<span class="preprocessor">#include <QtCore/QDebug></span>
<span class="preprocessor">#include <QtWidgets/QHeaderView></span>
<span class="preprocessor">#include <QtWidgets/QMessageBox></span>
<span class="preprocessor">#define USE_STATIC_DATA</span>
<span class="keyword">using</span> <span class="keyword">namespace</span> <span class="type"><a href="qtdatavisualization-qmlmodule.html">QtDataVisualization</a></span>;
<span class="keyword">class</span> GraphDataGenerator : <span class="keyword">public</span> <span class="type">QObject</span>
{
<span class="keyword">public</span>:
<span class="keyword">explicit</span> GraphDataGenerator(<span class="type"><a href="q3dbars.html">Q3DBars</a></span> <span class="operator">*</span>bargraph<span class="operator">,</span> <span class="type">QTableWidget</span> <span class="operator">*</span>tableWidget);
<span class="operator">~</span>GraphDataGenerator();
<span class="type">void</span> setupModel();
<span class="type">void</span> addRow();
<span class="type">void</span> changeStyle();
<span class="type">void</span> changePresetCamera();
<span class="type">void</span> changeTheme();
<span class="type">void</span> start();
<span class="type">void</span> selectFromTable(<span class="keyword">const</span> <span class="type">QPoint</span> <span class="operator">&</span>selection);
<span class="type">void</span> selectedFromTable(<span class="type">int</span> currentRow<span class="operator">,</span> <span class="type">int</span> currentColumn<span class="operator">,</span> <span class="type">int</span> previousRow<span class="operator">,</span> <span class="type">int</span> previousColumn);
<span class="type">void</span> fixTableSize();
<span class="keyword">private</span>:
<span class="type"><a href="q3dbars.html">Q3DBars</a></span> <span class="operator">*</span>m_graph;
<span class="type">QTimer</span> <span class="operator">*</span>m_dataTimer;
<span class="type">int</span> m_columnCount;
<span class="type">int</span> m_rowCount;
<span class="type">QTableWidget</span> <span class="operator">*</span>m_tableWidget; <span class="comment">// not owned</span>
};
GraphDataGenerator<span class="operator">::</span>GraphDataGenerator(<span class="type"><a href="q3dbars.html">Q3DBars</a></span> <span class="operator">*</span>bargraph<span class="operator">,</span> <span class="type">QTableWidget</span> <span class="operator">*</span>tableWidget)
: m_graph(bargraph)<span class="operator">,</span>
m_dataTimer(<span class="number">0</span>)<span class="operator">,</span>
m_columnCount(<span class="number">100</span>)<span class="operator">,</span>
m_rowCount(<span class="number">50</span>)<span class="operator">,</span>
m_tableWidget(tableWidget)
{
<span class="comment">// Set up bar specifications; make the bars as wide as they are deep,</span>
<span class="comment">// and add a small space between them</span>
m_graph<span class="operator">-</span><span class="operator">></span>setBarThickness(<span class="number">1.0f</span>);
m_graph<span class="operator">-</span><span class="operator">></span>setBarSpacing(<span class="type">QSizeF</span>(<span class="number">0.2</span><span class="operator">,</span> <span class="number">0.2</span>));
<span class="preprocessor">#ifndef USE_STATIC_DATA</span>
<span class="comment">// Set up sample space; make it as deep as it's wide</span>
m_graph<span class="operator">-</span><span class="operator">></span>rowAxis()<span class="operator">-</span><span class="operator">></span>setRange(<span class="number">0</span><span class="operator">,</span> m_rowCount);
m_graph<span class="operator">-</span><span class="operator">></span>columnAxis()<span class="operator">-</span><span class="operator">></span>setRange(<span class="number">0</span><span class="operator">,</span> m_columnCount);
m_tableWidget<span class="operator">-</span><span class="operator">></span>setColumnCount(m_columnCount);
<span class="comment">// Set selection mode to full</span>
m_graph<span class="operator">-</span><span class="operator">></span>setSelectionMode(QAbstract3DGraph<span class="operator">::</span>SelectionItemRowAndColumn);
<span class="comment">// Hide axis labels by explicitly setting one empty string as label list</span>
m_graph<span class="operator">-</span><span class="operator">></span>rowAxis()<span class="operator">-</span><span class="operator">></span>setLabels(<span class="type">QStringList</span>(<span class="type">QString</span>()));
m_graph<span class="operator">-</span><span class="operator">></span>columnAxis()<span class="operator">-</span><span class="operator">></span>setLabels(<span class="type">QStringList</span>(<span class="type">QString</span>()));
m_graph<span class="operator">-</span><span class="operator">></span>seriesList()<span class="operator">.</span>at(<span class="number">0</span>)<span class="operator">-</span><span class="operator">></span>setItemLabelFormat(<span class="type">QStringLiteral</span>(<span class="string">"@valueLabel"</span>));
<span class="preprocessor">#else</span>
<span class="comment">// Set selection mode to slice row</span>
m_graph<span class="operator">-</span><span class="operator">></span>setSelectionMode(QAbstract3DGraph<span class="operator">::</span>SelectionItemAndRow <span class="operator">|</span> QAbstract3DGraph<span class="operator">::</span>SelectionSlice);
<span class="preprocessor">#endif</span>
<span class="comment">// Set theme</span>
m_graph<span class="operator">-</span><span class="operator">></span>activeTheme()<span class="operator">-</span><span class="operator">></span>setType(<span class="type"><a href="q3dtheme.html">Q3DTheme</a></span><span class="operator">::</span>ThemeDigia);
<span class="comment">// Set font</span>
m_graph<span class="operator">-</span><span class="operator">></span>activeTheme()<span class="operator">-</span><span class="operator">></span>setFont(<span class="type">QFont</span>(<span class="string">"Impact"</span><span class="operator">,</span> <span class="number">20</span>));
<span class="comment">// Set preset camera position</span>
m_graph<span class="operator">-</span><span class="operator">></span>scene()<span class="operator">-</span><span class="operator">></span>activeCamera()<span class="operator">-</span><span class="operator">></span>setCameraPreset(<span class="type"><a href="q3dcamera.html">Q3DCamera</a></span><span class="operator">::</span>CameraPresetFront);
}
GraphDataGenerator<span class="operator">::</span><span class="operator">~</span>GraphDataGenerator()
{
<span class="keyword">if</span> (m_dataTimer) {
m_dataTimer<span class="operator">-</span><span class="operator">></span>stop();
<span class="keyword">delete</span> m_dataTimer;
}
<span class="keyword">delete</span> m_graph;
}
<span class="type">void</span> GraphDataGenerator<span class="operator">::</span>start()
{
<span class="preprocessor">#ifndef USE_STATIC_DATA</span>
m_dataTimer <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QTimer</span>();
m_dataTimer<span class="operator">-</span><span class="operator">></span>setTimerType(<span class="type">Qt</span><span class="operator">::</span>CoarseTimer);
<span class="type">QObject</span><span class="operator">::</span>connect(m_dataTimer<span class="operator">,</span> <span class="operator">&</span><span class="type">QTimer</span><span class="operator">::</span>timeout<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>GraphDataGenerator<span class="operator">::</span>addRow);
m_dataTimer<span class="operator">-</span><span class="operator">></span>start(<span class="number">0</span>);
m_tableWidget<span class="operator">-</span><span class="operator">></span>setFixedWidth(m_graph<span class="operator">-</span><span class="operator">></span>width());
<span class="preprocessor">#else</span>
setupModel();
<span class="comment">// Table needs to be shown before the size of its headers can be accurately obtained,</span>
<span class="comment">// so we postpone it a bit</span>
m_dataTimer <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QTimer</span>();
m_dataTimer<span class="operator">-</span><span class="operator">></span>setSingleShot(<span class="keyword">true</span>);
<span class="type">QObject</span><span class="operator">::</span>connect(m_dataTimer<span class="operator">,</span> <span class="operator">&</span><span class="type">QTimer</span><span class="operator">::</span>timeout<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>GraphDataGenerator<span class="operator">::</span>fixTableSize);
m_dataTimer<span class="operator">-</span><span class="operator">></span>start(<span class="number">0</span>);
<span class="preprocessor">#endif</span>
}
<span class="type">void</span> GraphDataGenerator<span class="operator">::</span>setupModel()
{
<span class="comment">// Set up row and column names</span>
<span class="type">QStringList</span> days;
days <span class="operator"><</span><span class="operator"><</span> <span class="string">"Monday"</span> <span class="operator"><</span><span class="operator"><</span> <span class="string">"Tuesday"</span> <span class="operator"><</span><span class="operator"><</span> <span class="string">"Wednesday"</span> <span class="operator"><</span><span class="operator"><</span> <span class="string">"Thursday"</span> <span class="operator"><</span><span class="operator"><</span> <span class="string">"Friday"</span> <span class="operator"><</span><span class="operator"><</span> <span class="string">"Saturday"</span> <span class="operator"><</span><span class="operator"><</span> <span class="string">"Sunday"</span>;
<span class="type">QStringList</span> weeks;
weeks <span class="operator"><</span><span class="operator"><</span> <span class="string">"week 1"</span> <span class="operator"><</span><span class="operator"><</span> <span class="string">"week 2"</span> <span class="operator"><</span><span class="operator"><</span> <span class="string">"week 3"</span> <span class="operator"><</span><span class="operator"><</span> <span class="string">"week 4"</span> <span class="operator"><</span><span class="operator"><</span> <span class="string">"week 5"</span>;
<span class="comment">// Set up data Mon Tue Wed Thu Fri Sat Sun</span>
<span class="type">float</span> hours<span class="operator">[</span><span class="number">5</span><span class="operator">]</span><span class="operator">[</span><span class="number">7</span><span class="operator">]</span> <span class="operator">=</span> {{<span class="number">2.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span> <span class="number">3.0f</span><span class="operator">,</span> <span class="number">0.2f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span> <span class="number">5.0f</span><span class="operator">,</span> <span class="number">10.0f</span>}<span class="operator">,</span> <span class="comment">// week 1</span>
{<span class="number">0.5f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span> <span class="number">3.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span> <span class="number">2.0f</span><span class="operator">,</span> <span class="number">2.0f</span><span class="operator">,</span> <span class="number">3.0f</span>}<span class="operator">,</span> <span class="comment">// week 2</span>
{<span class="number">1.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span> <span class="number">2.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span> <span class="number">4.0f</span><span class="operator">,</span> <span class="number">4.0f</span><span class="operator">,</span> <span class="number">4.0f</span>}<span class="operator">,</span> <span class="comment">// week 3</span>
{<span class="number">0.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">2.0f</span><span class="operator">,</span> <span class="number">2.0f</span><span class="operator">,</span> <span class="number">0.3f</span>}<span class="operator">,</span> <span class="comment">// week 4</span>
{<span class="number">3.0f</span><span class="operator">,</span> <span class="number">3.0f</span><span class="operator">,</span> <span class="number">6.0f</span><span class="operator">,</span> <span class="number">2.0f</span><span class="operator">,</span> <span class="number">2.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span> <span class="number">1.0f</span>}}; <span class="comment">// week 5</span>
<span class="comment">// Add labels</span>
m_graph<span class="operator">-</span><span class="operator">></span>rowAxis()<span class="operator">-</span><span class="operator">></span>setTitle(<span class="string">"Week of year"</span>);
m_graph<span class="operator">-</span><span class="operator">></span>rowAxis()<span class="operator">-</span><span class="operator">></span>setTitleVisible(<span class="keyword">true</span>);
m_graph<span class="operator">-</span><span class="operator">></span>columnAxis()<span class="operator">-</span><span class="operator">></span>setTitle(<span class="string">"Day of week"</span>);
m_graph<span class="operator">-</span><span class="operator">></span>columnAxis()<span class="operator">-</span><span class="operator">></span>setTitleVisible(<span class="keyword">true</span>);
m_graph<span class="operator">-</span><span class="operator">></span>valueAxis()<span class="operator">-</span><span class="operator">></span>setTitle(<span class="string">"Hours spent on the Internet"</span>);
m_graph<span class="operator">-</span><span class="operator">></span>valueAxis()<span class="operator">-</span><span class="operator">></span>setTitleVisible(<span class="keyword">true</span>);
m_graph<span class="operator">-</span><span class="operator">></span>valueAxis()<span class="operator">-</span><span class="operator">></span>setLabelFormat(<span class="string">"%.1f h"</span>);
m_tableWidget<span class="operator">-</span><span class="operator">></span>setRowCount(<span class="number">5</span>);
m_tableWidget<span class="operator">-</span><span class="operator">></span>setColumnCount(<span class="number">7</span>);
m_tableWidget<span class="operator">-</span><span class="operator">></span>setHorizontalHeaderLabels(days);
m_tableWidget<span class="operator">-</span><span class="operator">></span>setVerticalHeaderLabels(weeks);
m_tableWidget<span class="operator">-</span><span class="operator">></span>setHorizontalScrollBarPolicy(<span class="type">Qt</span><span class="operator">::</span>ScrollBarAlwaysOff);
m_tableWidget<span class="operator">-</span><span class="operator">></span>setVerticalScrollBarPolicy(<span class="type">Qt</span><span class="operator">::</span>ScrollBarAlwaysOff);
m_tableWidget<span class="operator">-</span><span class="operator">></span>setCurrentCell(<span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span>);
m_tableWidget<span class="operator">-</span><span class="operator">></span>setSelectionMode(<span class="type">QAbstractItemView</span><span class="operator">::</span>SingleSelection);
<span class="keyword">for</span> (<span class="type">int</span> week <span class="operator">=</span> <span class="number">0</span>; week <span class="operator"><</span> weeks<span class="operator">.</span>size(); week<span class="operator">+</span><span class="operator">+</span>) {
<span class="keyword">for</span> (<span class="type">int</span> day <span class="operator">=</span> <span class="number">0</span>; day <span class="operator"><</span> days<span class="operator">.</span>size(); day<span class="operator">+</span><span class="operator">+</span>) {
<span class="type">QModelIndex</span> index <span class="operator">=</span> m_tableWidget<span class="operator">-</span><span class="operator">></span>model()<span class="operator">-</span><span class="operator">></span>index(week<span class="operator">,</span> day);
m_tableWidget<span class="operator">-</span><span class="operator">></span>model()<span class="operator">-</span><span class="operator">></span>setData(index<span class="operator">,</span> hours<span class="operator">[</span>week<span class="operator">]</span><span class="operator">[</span>day<span class="operator">]</span>);
}
}
}
<span class="type">void</span> GraphDataGenerator<span class="operator">::</span>addRow()
{
m_tableWidget<span class="operator">-</span><span class="operator">></span>model()<span class="operator">-</span><span class="operator">></span>insertRow(<span class="number">0</span>);
<span class="keyword">if</span> (m_tableWidget<span class="operator">-</span><span class="operator">></span>model()<span class="operator">-</span><span class="operator">></span>rowCount() <span class="operator">></span> m_rowCount)
m_tableWidget<span class="operator">-</span><span class="operator">></span>model()<span class="operator">-</span><span class="operator">></span>removeRow(m_rowCount);
<span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> m_columnCount; i<span class="operator">+</span><span class="operator">+</span>) {
<span class="type">QModelIndex</span> index <span class="operator">=</span> m_tableWidget<span class="operator">-</span><span class="operator">></span>model()<span class="operator">-</span><span class="operator">></span>index(<span class="number">0</span><span class="operator">,</span> i);
m_tableWidget<span class="operator">-</span><span class="operator">></span>model()<span class="operator">-</span><span class="operator">></span>setData(index<span class="operator">,</span>
((<span class="type">float</span>)i <span class="operator">/</span> (<span class="type">float</span>)m_columnCount) <span class="operator">/</span> <span class="number">2.0f</span> <span class="operator">+</span>
(<span class="type">float</span>)(<span class="type">QRandomGenerator</span><span class="operator">::</span>global()<span class="operator">-</span><span class="operator">></span>bounded(<span class="number">30</span>)) <span class="operator">/</span> <span class="number">100.0f</span>);
}
m_tableWidget<span class="operator">-</span><span class="operator">></span>resizeColumnsToContents();
}
<span class="type">void</span> GraphDataGenerator<span class="operator">::</span>selectFromTable(<span class="keyword">const</span> <span class="type">QPoint</span> <span class="operator">&</span>selection)
{
m_tableWidget<span class="operator">-</span><span class="operator">></span>setFocus();
m_tableWidget<span class="operator">-</span><span class="operator">></span>setCurrentCell(selection<span class="operator">.</span>x()<span class="operator">,</span> selection<span class="operator">.</span>y());
}
<span class="type">void</span> GraphDataGenerator<span class="operator">::</span>selectedFromTable(<span class="type">int</span> currentRow<span class="operator">,</span> <span class="type">int</span> currentColumn<span class="operator">,</span>
<span class="type">int</span> previousRow<span class="operator">,</span> <span class="type">int</span> previousColumn)
{
Q_UNUSED(previousRow)
Q_UNUSED(previousColumn)
m_graph<span class="operator">-</span><span class="operator">></span>seriesList()<span class="operator">.</span>at(<span class="number">0</span>)<span class="operator">-</span><span class="operator">></span>setSelectedBar(<span class="type">QPoint</span>(currentRow<span class="operator">,</span> currentColumn));
}
<span class="type">void</span> GraphDataGenerator<span class="operator">::</span>fixTableSize()
{
<span class="type">int</span> width <span class="operator">=</span> m_tableWidget<span class="operator">-</span><span class="operator">></span>horizontalHeader()<span class="operator">-</span><span class="operator">></span>length();
width <span class="operator">+</span><span class="operator">=</span> m_tableWidget<span class="operator">-</span><span class="operator">></span>verticalHeader()<span class="operator">-</span><span class="operator">></span>width();
m_tableWidget<span class="operator">-</span><span class="operator">></span>setFixedWidth(width <span class="operator">+</span> <span class="number">2</span>);
<span class="type">int</span> height <span class="operator">=</span> m_tableWidget<span class="operator">-</span><span class="operator">></span>verticalHeader()<span class="operator">-</span><span class="operator">></span>length();
height <span class="operator">+</span><span class="operator">=</span> m_tableWidget<span class="operator">-</span><span class="operator">></span>horizontalHeader()<span class="operator">-</span><span class="operator">></span>height();
m_tableWidget<span class="operator">-</span><span class="operator">></span>setFixedHeight(height <span class="operator">+</span> <span class="number">2</span>);
}
<span class="type">int</span> main(<span class="type">int</span> argc<span class="operator">,</span> <span class="type">char</span> <span class="operator">*</span><span class="operator">*</span>argv)
{
<span class="type">QApplication</span> app(argc<span class="operator">,</span> argv);
<span class="type"><a href="q3dbars.html">Q3DBars</a></span> <span class="operator">*</span>graph <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="q3dbars.html">Q3DBars</a></span>();
<span class="type">QWidget</span> <span class="operator">*</span>container <span class="operator">=</span> <span class="type">QWidget</span><span class="operator">::</span>createWindowContainer(graph);
<span class="keyword">if</span> (<span class="operator">!</span>graph<span class="operator">-</span><span class="operator">></span>hasContext()) {
<span class="type">QMessageBox</span> msgBox;
msgBox<span class="operator">.</span>setText(<span class="string">"Couldn't initialize the OpenGL context."</span>);
msgBox<span class="operator">.</span>exec();
<span class="keyword">return</span> <span class="operator">-</span><span class="number">1</span>;
}
<span class="type">QSize</span> screenSize <span class="operator">=</span> graph<span class="operator">-</span><span class="operator">></span>screen()<span class="operator">-</span><span class="operator">></span>size();
container<span class="operator">-</span><span class="operator">></span>setMinimumSize(<span class="type">QSize</span>(screenSize<span class="operator">.</span>width() <span class="operator">/</span> <span class="number">2</span><span class="operator">,</span> screenSize<span class="operator">.</span>height() <span class="operator">/</span> <span class="number">2</span>));
container<span class="operator">-</span><span class="operator">></span>setMaximumSize(screenSize);
container<span class="operator">-</span><span class="operator">></span>setSizePolicy(<span class="type">QSizePolicy</span><span class="operator">::</span>Expanding<span class="operator">,</span> <span class="type">QSizePolicy</span><span class="operator">::</span>Expanding);
container<span class="operator">-</span><span class="operator">></span>setFocusPolicy(<span class="type">Qt</span><span class="operator">::</span>StrongFocus);
<span class="type">QWidget</span> widget;
<span class="type">QVBoxLayout</span> <span class="operator">*</span>layout <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QVBoxLayout</span>(<span class="operator">&</span>widget);
<span class="type">QTableWidget</span> <span class="operator">*</span>tableWidget <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QTableWidget</span>(<span class="operator">&</span>widget);
layout<span class="operator">-</span><span class="operator">></span>addWidget(container<span class="operator">,</span> <span class="number">1</span>);
layout<span class="operator">-</span><span class="operator">></span>addWidget(tableWidget<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="type">Qt</span><span class="operator">::</span>AlignHCenter);
tableWidget<span class="operator">-</span><span class="operator">></span>setSizePolicy(<span class="type">QSizePolicy</span><span class="operator">::</span>Expanding<span class="operator">,</span> <span class="type">QSizePolicy</span><span class="operator">::</span>Fixed);
tableWidget<span class="operator">-</span><span class="operator">></span>setAlternatingRowColors(<span class="keyword">true</span>);
widget<span class="operator">.</span>setWindowTitle(<span class="type">QStringLiteral</span>(<span class="string">"Hours spent on the Internet"</span>));
<span class="comment">// Since we are dealing with QTableWidget, the model will already have data sorted properly</span>
<span class="comment">// into rows and columns, so we simply set useModelCategories property to true to utilize this.</span>
<span class="type"><a href="qitemmodelbardataproxy.html">QItemModelBarDataProxy</a></span> <span class="operator">*</span>proxy <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qitemmodelbardataproxy.html">QItemModelBarDataProxy</a></span>(tableWidget<span class="operator">-</span><span class="operator">></span>model());
proxy<span class="operator">-</span><span class="operator">></span>setUseModelCategories(<span class="keyword">true</span>);
QBar3DSeries <span class="operator">*</span>series <span class="operator">=</span> <span class="keyword">new</span> QBar3DSeries(proxy);
series<span class="operator">-</span><span class="operator">></span>setMesh(QAbstract3DSeries<span class="operator">::</span>MeshPyramid);
graph<span class="operator">-</span><span class="operator">></span>addSeries(series);
GraphDataGenerator generator(graph<span class="operator">,</span> tableWidget);
<span class="type">QObject</span><span class="operator">::</span>connect(series<span class="operator">,</span> <span class="operator">&</span>QBar3DSeries<span class="operator">::</span>selectedBarChanged<span class="operator">,</span> <span class="operator">&</span>generator<span class="operator">,</span>
<span class="operator">&</span>GraphDataGenerator<span class="operator">::</span>selectFromTable);
<span class="type">QObject</span><span class="operator">::</span>connect(tableWidget<span class="operator">,</span> <span class="operator">&</span><span class="type">QTableWidget</span><span class="operator">::</span>currentCellChanged<span class="operator">,</span> <span class="operator">&</span>generator<span class="operator">,</span>
<span class="operator">&</span>GraphDataGenerator<span class="operator">::</span>selectedFromTable);
widget<span class="operator">.</span>show();
generator<span class="operator">.</span>start();
<span class="keyword">return</span> app<span class="operator">.</span>exec();
}
</pre>
</div>
<!-- @@@itemmodel/main.cpp -->
</div>
</div>
</div>
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<p>
<acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd.
Documentation contributions included herein are the copyrights of
their respective owners.<br/> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br/> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property
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distrib
>
Mageia
>
7
>
armv7hl
>
media
>
core-updates
>
by-pkgid
>
845e36bb3ecce380666d628d88446962
>
files
>
254
