<?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 Charts 5.12.6</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="qtcharts-index.html">Qt Charts</a></td><td ><a href="qtcharts-stackedbarchartdrilldown-example.html">StackedBarChart Drilldown Example</a></td><td >main.cpp Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtcharts-index.html">Qt Charts | 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">stackedbarchartdrilldown/main.cpp</span> <!-- $$$stackedbarchartdrilldown/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 Charts 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 <QtWidgets/QApplication></span> <span class="preprocessor">#include <QtWidgets/QMainWindow></span> <span class="preprocessor">#include <QtCore/QRandomGenerator></span> <span class="preprocessor">#include <QtCharts/QChartView></span> <span class="preprocessor">#include <QtCharts/QBarSet></span> <span class="preprocessor">#include <QtCharts/QLegend></span> <span class="preprocessor">#include "drilldownseries.h"</span> <span class="preprocessor">#include "drilldownchart.h"</span> QT_CHARTS_USE_NAMESPACE <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>argv<span class="operator">[</span><span class="operator">]</span>) { <span class="type">QApplication</span> a(argc<span class="operator">,</span> argv); <span class="type">QMainWindow</span> window; DrilldownChart <span class="operator">*</span>drilldownChart <span class="operator">=</span> <span class="keyword">new</span> DrilldownChart(); drilldownChart<span class="operator">-</span><span class="operator">></span>setAnimationOptions(<span class="type"><a href="qchart.html">QChart</a></span><span class="operator">::</span>SeriesAnimations); <span class="comment">// Define categories</span> <span class="keyword">const</span> <span class="type">QStringList</span> months <span class="operator">=</span> { <span class="string">"May"</span><span class="operator">,</span> <span class="string">"Jun"</span><span class="operator">,</span> <span class="string">"Jul"</span><span class="operator">,</span> <span class="string">"Aug"</span><span class="operator">,</span> <span class="string">"Sep"</span> }; <span class="keyword">const</span> <span class="type">QStringList</span> weeks <span class="operator">=</span> { <span class="string">"week 1"</span><span class="operator">,</span> <span class="string">"week 2"</span><span class="operator">,</span> <span class="string">"week 3"</span><span class="operator">,</span> <span class="string">"week 4"</span> }; <span class="keyword">const</span> <span class="type">QStringList</span> plants <span class="operator">=</span> { <span class="string">"Habanero"</span><span class="operator">,</span> <span class="string">"Lemon Drop"</span><span class="operator">,</span> <span class="string">"Starfish"</span><span class="operator">,</span> <span class="string">"Aji Amarillo"</span> }; <span class="comment">// Create drilldown structure</span> DrilldownBarSeries <span class="operator">*</span>seasonSeries <span class="operator">=</span> <span class="keyword">new</span> DrilldownBarSeries(months<span class="operator">,</span> <span class="number">320</span><span class="operator">,</span> drilldownChart); seasonSeries<span class="operator">-</span><span class="operator">></span>setName(<span class="string">"Crop by month - Season"</span>); <span class="comment">// Each month in season series has drilldown series for weekly data</span> <span class="keyword">for</span> (<span class="type">int</span> month <span class="operator">=</span> <span class="number">0</span>; month <span class="operator"><</span> months<span class="operator">.</span>count(); month<span class="operator">+</span><span class="operator">+</span>) { <span class="comment">// Create drilldown series for every week</span> DrilldownBarSeries <span class="operator">*</span>weeklySeries <span class="operator">=</span> <span class="keyword">new</span> DrilldownBarSeries(weeks<span class="operator">,</span> <span class="number">80</span><span class="operator">,</span> drilldownChart); seasonSeries<span class="operator">-</span><span class="operator">></span>mapDrilldownSeries(month<span class="operator">,</span> weeklySeries); <span class="comment">// Drilling down from weekly data brings us back to season data.</span> <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>count(); week<span class="operator">+</span><span class="operator">+</span>) { weeklySeries<span class="operator">-</span><span class="operator">></span>mapDrilldownSeries(week<span class="operator">,</span> seasonSeries); weeklySeries<span class="operator">-</span><span class="operator">></span>setName(<span class="type">QString</span>(<span class="string">"Crop by week - "</span> <span class="operator">+</span> months<span class="operator">.</span>at(month))); } <span class="comment">// Use clicked signal to implement drilldown</span> <span class="type">QObject</span><span class="operator">::</span>connect(weeklySeries<span class="operator">,</span> <span class="operator">&</span>DrilldownBarSeries<span class="operator">::</span>clicked<span class="operator">,</span> drilldownChart<span class="operator">,</span> <span class="operator">&</span>DrilldownChart<span class="operator">::</span>handleClicked); } <span class="comment">// Enable drilldown from season series using clicked signal</span> <span class="type">QObject</span><span class="operator">::</span>connect(seasonSeries<span class="operator">,</span> <span class="operator">&</span>DrilldownBarSeries<span class="operator">::</span>clicked<span class="operator">,</span> drilldownChart<span class="operator">,</span> <span class="operator">&</span>DrilldownChart<span class="operator">::</span>handleClicked); <span class="comment">// Fill monthly and weekly series with data</span> <span class="keyword">for</span> (<span class="keyword">const</span> <span class="type">QString</span> <span class="operator">&</span>plant : plants) { <span class="type"><a href="qbarset.html">QBarSet</a></span> <span class="operator">*</span>monthlyCrop <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qbarset.html">QBarSet</a></span>(plant); <span class="keyword">for</span> (<span class="type">int</span> month <span class="operator">=</span> <span class="number">0</span>; month <span class="operator"><</span> months<span class="operator">.</span>count(); month<span class="operator">+</span><span class="operator">+</span>) { <span class="type"><a href="qbarset.html">QBarSet</a></span> <span class="operator">*</span>weeklyCrop <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qbarset.html">QBarSet</a></span>(plant); <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>count(); week<span class="operator">+</span><span class="operator">+</span>) <span class="operator">*</span>weeklyCrop <span class="operator"><</span><span class="operator"><</span> <span class="type">QRandomGenerator</span><span class="operator">::</span>global()<span class="operator">-</span><span class="operator">></span>bounded(<span class="number">20</span>); <span class="comment">// Get the drilldown series from season series and add crop to it.</span> seasonSeries<span class="operator">-</span><span class="operator">></span>drilldownSeries(month)<span class="operator">-</span><span class="operator">></span>append(weeklyCrop); <span class="operator">*</span>monthlyCrop <span class="operator"><</span><span class="operator"><</span> weeklyCrop<span class="operator">-</span><span class="operator">></span>sum(); } seasonSeries<span class="operator">-</span><span class="operator">></span>append(monthlyCrop); } <span class="comment">// Show season series in initial view</span> drilldownChart<span class="operator">-</span><span class="operator">></span>changeSeries(seasonSeries); drilldownChart<span class="operator">-</span><span class="operator">></span>setTitle(seasonSeries<span class="operator">-</span><span class="operator">></span>name()); drilldownChart<span class="operator">-</span><span class="operator">></span>axes(<span class="type">Qt</span><span class="operator">::</span>Horizontal)<span class="operator">.</span>first()<span class="operator">-</span><span class="operator">></span>setGridLineVisible(<span class="keyword">false</span>); drilldownChart<span class="operator">-</span><span class="operator">></span>legend()<span class="operator">-</span><span class="operator">></span>setVisible(<span class="keyword">true</span>); drilldownChart<span class="operator">-</span><span class="operator">></span>legend()<span class="operator">-</span><span class="operator">></span>setAlignment(<span class="type">Qt</span><span class="operator">::</span>AlignBottom); <span class="type"><a href="qchartview.html">QChartView</a></span> <span class="operator">*</span>chartView <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qchartview.html">QChartView</a></span>(drilldownChart); window<span class="operator">.</span>setCentralWidget(chartView); window<span class="operator">.</span>resize(<span class="number">480</span><span class="operator">,</span> <span class="number">300</span>); window<span class="operator">.</span>show(); <span class="keyword">return</span> a<span class="operator">.</span>exec(); } </pre> </div> <!-- @@@stackedbarchartdrilldown/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>