<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>main.cpp Example File | Qt Data Visualization 5.12.2</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <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> <td id="buildversion" width="100%" align="right"><a href="qtdatavisualization-index.html">Qt Data Visualization | Commercial or GPLv3</a></td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <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">QtDataVisualization</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> </div> </div> <div class="footer"> <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 of their respective owners. </p> </div> </body> </html>