<?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>variantbardataproxy.h Example File | Qt Data Visualization 5.11</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 ><a href="../qtdoc/index.html">Qt 5.11</a></td><td ><a href="qtdatavisualization-index.html">Qt Data Visualization</a></td><td ><a href="qtdatavisualization-customproxy-example.html">Custom Proxy Example</a></td><td >variantbardataproxy.h Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right">Qt 5.11.2 Reference Documentation</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">variantbardataproxy.h Example File</h1> <span class="subtitle">customproxy/variantbardataproxy.h</span> <!-- $$$customproxy/variantbardataproxy.h-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">#ifndef VARIANTBARDATAPROXY_H</span> <span class="preprocessor">#define VARIANTBARDATAPROXY_H</span> <span class="preprocessor">#include "qbardataproxy.h"</span> <span class="preprocessor">#include "variantdataset.h"</span> <span class="preprocessor">#include "variantbardatamapping.h"</span> <span class="preprocessor">#include <QtCore/QStringList></span> <span class="preprocessor">#include <QtCore/QMap></span> <span class="preprocessor">#include <QtCore/QPointer></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> VariantBarDataProxy : <span class="keyword">public</span> <span class="type"><a href="qbardataproxy.html">QBarDataProxy</a></span> { Q_OBJECT <span class="keyword">public</span>: <span class="keyword">explicit</span> VariantBarDataProxy(); <span class="keyword">explicit</span> VariantBarDataProxy(VariantDataSet <span class="operator">*</span>newSet<span class="operator">,</span> VariantBarDataMapping <span class="operator">*</span>mapping); <span class="keyword">virtual</span> <span class="operator">~</span>VariantBarDataProxy(); <span class="comment">// Doesn't gain ownership of the dataset, but does connect to it to listen for data changes.</span> <span class="type">void</span> setDataSet(VariantDataSet <span class="operator">*</span>newSet); VariantDataSet <span class="operator">*</span>dataSet(); <span class="comment">// Map key (row, column, value) to value index in data item (VariantItem).</span> <span class="comment">// Doesn't gain ownership of mapping, but does connect to it to listen for mapping changes.</span> <span class="comment">// Modifying mapping that is set to proxy will trigger dataset re-resolving.</span> <span class="type">void</span> setMapping(VariantBarDataMapping <span class="operator">*</span>mapping); VariantBarDataMapping <span class="operator">*</span>mapping(); <span class="keyword">public</span> Q_SLOTS: <span class="type">void</span> handleItemsAdded(<span class="type">int</span> index<span class="operator">,</span> <span class="type">int</span> count); <span class="type">void</span> handleDataCleared(); <span class="type">void</span> handleMappingChanged(); <span class="keyword">private</span>: <span class="type">void</span> resolveDataSet(); <span class="type"><a href="../qtcore/qpointer.html">QPointer</a></span><span class="operator"><</span>VariantDataSet<span class="operator">></span> m_dataSet; <span class="type"><a href="../qtcore/qpointer.html">QPointer</a></span><span class="operator"><</span>VariantBarDataMapping<span class="operator">></span> m_mapping; Q_DISABLE_COPY(VariantBarDataProxy) }; <span class="preprocessor">#endif</span> </pre> </div> <!-- @@@customproxy/variantbardataproxy.h --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2018 The Qt Company Ltd. 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