<?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>mainwidget.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-overview.html#legend">Legend Example</a></td><td >mainwidget.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">mainwidget.cpp Example File</h1> <span class="subtitle">legend/mainwidget.cpp</span> <!-- $$$legend/mainwidget.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 "mainwidget.h"</span> <span class="preprocessor">#include <QtCharts/QChart></span> <span class="preprocessor">#include <QtCharts/QChartView></span> <span class="preprocessor">#include <QtWidgets/QPushButton></span> <span class="preprocessor">#include <QtWidgets/QLabel></span> <span class="preprocessor">#include <QtCore/QDebug></span> <span class="preprocessor">#include <QtCharts/QBarSet></span> <span class="preprocessor">#include <QtCharts/QBarSeries></span> <span class="preprocessor">#include <QtCharts/QLegend></span> <span class="preprocessor">#include <QtWidgets/QFormLayout></span> QT_CHARTS_USE_NAMESPACE MainWidget<span class="operator">::</span>MainWidget(<span class="type">QWidget</span> <span class="operator">*</span>parent) : <span class="type">QWidget</span>(parent) { <span class="comment">// Create buttons for ui</span> m_buttonLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QGridLayout</span>(); <span class="type">QPushButton</span> <span class="operator">*</span>detachLegendButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QPushButton</span>(<span class="string">"Toggle attached"</span>); connect(detachLegendButton<span class="operator">,</span> <span class="operator">&</span><span class="type">QPushButton</span><span class="operator">::</span>clicked<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWidget<span class="operator">::</span>toggleAttached); m_buttonLayout<span class="operator">-</span><span class="operator">></span>addWidget(detachLegendButton<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span>); <span class="type">QPushButton</span> <span class="operator">*</span>addSetButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QPushButton</span>(<span class="string">"add barset"</span>); connect(addSetButton<span class="operator">,</span> <span class="operator">&</span><span class="type">QPushButton</span><span class="operator">::</span>clicked<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWidget<span class="operator">::</span>addBarset); m_buttonLayout<span class="operator">-</span><span class="operator">></span>addWidget(addSetButton<span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">0</span>); <span class="type">QPushButton</span> <span class="operator">*</span>removeBarsetButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QPushButton</span>(<span class="string">"remove barset"</span>); connect(removeBarsetButton<span class="operator">,</span> <span class="operator">&</span><span class="type">QPushButton</span><span class="operator">::</span>clicked<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWidget<span class="operator">::</span>removeBarset); m_buttonLayout<span class="operator">-</span><span class="operator">></span>addWidget(removeBarsetButton<span class="operator">,</span> <span class="number">3</span><span class="operator">,</span> <span class="number">0</span>); <span class="type">QPushButton</span> <span class="operator">*</span>alignButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QPushButton</span>(<span class="string">"Align (Bottom)"</span>); connect(alignButton<span class="operator">,</span> <span class="operator">&</span><span class="type">QPushButton</span><span class="operator">::</span>clicked<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWidget<span class="operator">::</span>setLegendAlignment); m_buttonLayout<span class="operator">-</span><span class="operator">></span>addWidget(alignButton<span class="operator">,</span> <span class="number">4</span><span class="operator">,</span> <span class="number">0</span>); <span class="type">QPushButton</span> <span class="operator">*</span>boldButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QPushButton</span>(<span class="string">"Toggle bold"</span>); connect(boldButton<span class="operator">,</span> <span class="operator">&</span><span class="type">QPushButton</span><span class="operator">::</span>clicked<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWidget<span class="operator">::</span>toggleBold); m_buttonLayout<span class="operator">-</span><span class="operator">></span>addWidget(boldButton<span class="operator">,</span> <span class="number">8</span><span class="operator">,</span> <span class="number">0</span>); <span class="type">QPushButton</span> <span class="operator">*</span>italicButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QPushButton</span>(<span class="string">"Toggle italic"</span>); connect(italicButton<span class="operator">,</span> <span class="operator">&</span><span class="type">QPushButton</span><span class="operator">::</span>clicked<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWidget<span class="operator">::</span>toggleItalic); m_buttonLayout<span class="operator">-</span><span class="operator">></span>addWidget(italicButton<span class="operator">,</span> <span class="number">9</span><span class="operator">,</span> <span class="number">0</span>); m_legendPosX <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QDoubleSpinBox</span>(); m_legendPosY <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QDoubleSpinBox</span>(); m_legendWidth <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QDoubleSpinBox</span>(); m_legendHeight <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QDoubleSpinBox</span>(); connect(m_legendPosX<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">void</span> (<span class="type">QDoubleSpinBox</span><span class="operator">::</span><span class="operator">*</span>)(<span class="type">double</span>)<span class="operator">></span>(<span class="operator">&</span><span class="type">QDoubleSpinBox</span><span class="operator">::</span>valueChanged)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWidget<span class="operator">::</span>updateLegendLayout); connect(m_legendPosY<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">void</span> (<span class="type">QDoubleSpinBox</span><span class="operator">::</span><span class="operator">*</span>)(<span class="type">double</span>)<span class="operator">></span>(<span class="operator">&</span><span class="type">QDoubleSpinBox</span><span class="operator">::</span>valueChanged)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWidget<span class="operator">::</span>updateLegendLayout); connect(m_legendWidth<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">void</span> (<span class="type">QDoubleSpinBox</span><span class="operator">::</span><span class="operator">*</span>)(<span class="type">double</span>)<span class="operator">></span>(<span class="operator">&</span><span class="type">QDoubleSpinBox</span><span class="operator">::</span>valueChanged)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWidget<span class="operator">::</span>updateLegendLayout); connect(m_legendHeight<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">void</span> (<span class="type">QDoubleSpinBox</span><span class="operator">::</span><span class="operator">*</span>)(<span class="type">double</span>)<span class="operator">></span>(<span class="operator">&</span><span class="type">QDoubleSpinBox</span><span class="operator">::</span>valueChanged)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWidget<span class="operator">::</span>updateLegendLayout); <span class="type">QFormLayout</span> <span class="operator">*</span>legendLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QFormLayout</span>(); legendLayout<span class="operator">-</span><span class="operator">></span>addRow(<span class="string">"HPos"</span><span class="operator">,</span> m_legendPosX); legendLayout<span class="operator">-</span><span class="operator">></span>addRow(<span class="string">"VPos"</span><span class="operator">,</span> m_legendPosY); legendLayout<span class="operator">-</span><span class="operator">></span>addRow(<span class="string">"Width"</span><span class="operator">,</span> m_legendWidth); legendLayout<span class="operator">-</span><span class="operator">></span>addRow(<span class="string">"Height"</span><span class="operator">,</span> m_legendHeight); m_legendSettings <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QGroupBox</span>(<span class="string">"Detached legend"</span>); m_legendSettings<span class="operator">-</span><span class="operator">></span>setLayout(legendLayout); m_buttonLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_legendSettings); m_legendSettings<span class="operator">-</span><span class="operator">></span>setVisible(<span class="keyword">false</span>); <span class="comment">// Create chart view with the chart</span> m_chart <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qchart.html">QChart</a></span>(); m_chartView <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qchartview.html">QChartView</a></span>(m_chart<span class="operator">,</span> <span class="keyword">this</span>); <span class="comment">// Create spinbox to modify font size</span> m_fontSize <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QDoubleSpinBox</span>(); m_fontSize<span class="operator">-</span><span class="operator">></span>setValue(m_chart<span class="operator">-</span><span class="operator">></span>legend()<span class="operator">-</span><span class="operator">></span>font()<span class="operator">.</span>pointSizeF()); connect(m_fontSize<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">void</span> (<span class="type">QDoubleSpinBox</span><span class="operator">::</span><span class="operator">*</span>)(<span class="type">double</span>)<span class="operator">></span>(<span class="operator">&</span><span class="type">QDoubleSpinBox</span><span class="operator">::</span>valueChanged)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWidget<span class="operator">::</span>fontSizeChanged); <span class="type">QFormLayout</span> <span class="operator">*</span>fontLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QFormLayout</span>(); fontLayout<span class="operator">-</span><span class="operator">></span>addRow(<span class="string">"Legend font size"</span><span class="operator">,</span> m_fontSize); <span class="comment">// Create layout for grid and detached legend</span> m_mainLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QGridLayout</span>(); m_mainLayout<span class="operator">-</span><span class="operator">></span>addLayout(m_buttonLayout<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span>); m_mainLayout<span class="operator">-</span><span class="operator">></span>addLayout(fontLayout<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">0</span>); m_mainLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_chartView<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">3</span><span class="operator">,</span> <span class="number">1</span>); setLayout(m_mainLayout); createSeries(); } <span class="type">void</span> MainWidget<span class="operator">::</span>createSeries() { m_series <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qbarseries.html">QBarSeries</a></span>(); addBarset(); addBarset(); addBarset(); addBarset(); m_chart<span class="operator">-</span><span class="operator">></span>addSeries(m_series); m_chart<span class="operator">-</span><span class="operator">></span>setTitle(<span class="string">"Legend detach example"</span>); m_chart<span class="operator">-</span><span class="operator">></span>createDefaultAxes(); m_chart<span class="operator">-</span><span class="operator">></span>legend()<span class="operator">-</span><span class="operator">></span>setVisible(<span class="keyword">true</span>); m_chart<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); m_chartView<span class="operator">-</span><span class="operator">></span>setRenderHint(<span class="type">QPainter</span><span class="operator">::</span>Antialiasing); } <span class="type">void</span> MainWidget<span class="operator">::</span>showLegendSpinbox() { m_legendSettings<span class="operator">-</span><span class="operator">></span>setVisible(<span class="keyword">true</span>); <span class="type">QRectF</span> chartViewRect <span class="operator">=</span> m_chartView<span class="operator">-</span><span class="operator">></span>rect(); m_legendPosX<span class="operator">-</span><span class="operator">></span>setMinimum(<span class="number">0</span>); m_legendPosX<span class="operator">-</span><span class="operator">></span>setMaximum(chartViewRect<span class="operator">.</span>width()); m_legendPosX<span class="operator">-</span><span class="operator">></span>setValue(<span class="number">150</span>); m_legendPosY<span class="operator">-</span><span class="operator">></span>setMinimum(<span class="number">0</span>); m_legendPosY<span class="operator">-</span><span class="operator">></span>setMaximum(chartViewRect<span class="operator">.</span>height()); m_legendPosY<span class="operator">-</span><span class="operator">></span>setValue(<span class="number">150</span>); m_legendWidth<span class="operator">-</span><span class="operator">></span>setMinimum(<span class="number">0</span>); m_legendWidth<span class="operator">-</span><span class="operator">></span>setMaximum(chartViewRect<span class="operator">.</span>width()); m_legendWidth<span class="operator">-</span><span class="operator">></span>setValue(<span class="number">150</span>); m_legendHeight<span class="operator">-</span><span class="operator">></span>setMinimum(<span class="number">0</span>); m_legendHeight<span class="operator">-</span><span class="operator">></span>setMaximum(chartViewRect<span class="operator">.</span>height()); m_legendHeight<span class="operator">-</span><span class="operator">></span>setValue(<span class="number">75</span>); } <span class="type">void</span> MainWidget<span class="operator">::</span>hideLegendSpinbox() { m_legendSettings<span class="operator">-</span><span class="operator">></span>setVisible(<span class="keyword">false</span>); } <span class="type">void</span> MainWidget<span class="operator">::</span>toggleAttached() { <span class="type"><a href="qlegend.html">QLegend</a></span> <span class="operator">*</span>legend <span class="operator">=</span> m_chart<span class="operator">-</span><span class="operator">></span>legend(); <span class="keyword">if</span> (legend<span class="operator">-</span><span class="operator">></span>isAttachedToChart()) { legend<span class="operator">-</span><span class="operator">></span>detachFromChart(); m_chart<span class="operator">-</span><span class="operator">></span>legend()<span class="operator">-</span><span class="operator">></span>setBackgroundVisible(<span class="keyword">true</span>); m_chart<span class="operator">-</span><span class="operator">></span>legend()<span class="operator">-</span><span class="operator">></span>setBrush(<span class="type">QBrush</span>(<span class="type">QColor</span>(<span class="number">128</span><span class="operator">,</span> <span class="number">128</span><span class="operator">,</span> <span class="number">128</span><span class="operator">,</span> <span class="number">128</span>))); m_chart<span class="operator">-</span><span class="operator">></span>legend()<span class="operator">-</span><span class="operator">></span>setPen(<span class="type">QPen</span>(<span class="type">QColor</span>(<span class="number">192</span><span class="operator">,</span> <span class="number">192</span><span class="operator">,</span> <span class="number">192</span><span class="operator">,</span> <span class="number">192</span>))); showLegendSpinbox(); updateLegendLayout(); } <span class="keyword">else</span> { legend<span class="operator">-</span><span class="operator">></span>attachToChart(); legend<span class="operator">-</span><span class="operator">></span>setBackgroundVisible(<span class="keyword">false</span>); hideLegendSpinbox(); } update(); } <span class="type">void</span> MainWidget<span class="operator">::</span>addBarset() { <span class="type"><a href="qbarset.html">QBarSet</a></span> <span class="operator">*</span>barSet <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qbarset.html">QBarSet</a></span>(<span class="type">QString</span>(<span class="string">"set "</span>) <span class="operator">+</span> <span class="type">QString</span><span class="operator">::</span>number(m_series<span class="operator">-</span><span class="operator">></span>count())); <span class="type">qreal</span> delta <span class="operator">=</span> m_series<span class="operator">-</span><span class="operator">></span>count() <span class="operator">*</span> <span class="number">0.1</span>; <span class="operator">*</span>barSet <span class="operator"><</span><span class="operator"><</span> <span class="number">1</span> <span class="operator">+</span> delta <span class="operator"><</span><span class="operator"><</span> <span class="number">2</span> <span class="operator">+</span> delta <span class="operator"><</span><span class="operator"><</span> <span class="number">3</span> <span class="operator">+</span> delta <span class="operator"><</span><span class="operator"><</span> <span class="number">4</span> <span class="operator">+</span> delta; m_series<span class="operator">-</span><span class="operator">></span>append(barSet); } <span class="type">void</span> MainWidget<span class="operator">::</span>removeBarset() { <span class="type">QList</span><span class="operator"><</span><span class="type"><a href="qbarset.html">QBarSet</a></span> <span class="operator">*</span><span class="operator">></span> sets <span class="operator">=</span> m_series<span class="operator">-</span><span class="operator">></span>barSets(); <span class="keyword">if</span> (sets<span class="operator">.</span>count() <span class="operator">></span> <span class="number">0</span>) { m_series<span class="operator">-</span><span class="operator">></span>remove(sets<span class="operator">.</span>at(sets<span class="operator">.</span>count() <span class="operator">-</span> <span class="number">1</span>)); } } <span class="type">void</span> MainWidget<span class="operator">::</span>setLegendAlignment() { <span class="type">QPushButton</span> <span class="operator">*</span>button <span class="operator">=</span> qobject_cast<span class="operator"><</span><span class="type">QPushButton</span> <span class="operator">*</span><span class="operator">></span>(sender()); <span class="keyword">switch</span> (m_chart<span class="operator">-</span><span class="operator">></span>legend()<span class="operator">-</span><span class="operator">></span>alignment()) { <span class="keyword">case</span> <span class="type">Qt</span><span class="operator">::</span>AlignTop: m_chart<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>AlignLeft); <span class="keyword">if</span> (button) button<span class="operator">-</span><span class="operator">></span>setText(<span class="string">"Align (Left)"</span>); <span class="keyword">break</span>; <span class="keyword">case</span> <span class="type">Qt</span><span class="operator">::</span>AlignLeft: m_chart<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="keyword">if</span> (button) button<span class="operator">-</span><span class="operator">></span>setText(<span class="string">"Align (Bottom)"</span>); <span class="keyword">break</span>; <span class="keyword">case</span> <span class="type">Qt</span><span class="operator">::</span>AlignBottom: m_chart<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>AlignRight); <span class="keyword">if</span> (button) button<span class="operator">-</span><span class="operator">></span>setText(<span class="string">"Align (Right)"</span>); <span class="keyword">break</span>; <span class="keyword">default</span>: <span class="keyword">if</span> (button) button<span class="operator">-</span><span class="operator">></span>setText(<span class="string">"Align (Top)"</span>); m_chart<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>AlignTop); <span class="keyword">break</span>; } } <span class="type">void</span> MainWidget<span class="operator">::</span>toggleBold() { <span class="type">QFont</span> font <span class="operator">=</span> m_chart<span class="operator">-</span><span class="operator">></span>legend()<span class="operator">-</span><span class="operator">></span>font(); font<span class="operator">.</span>setBold(<span class="operator">!</span>font<span class="operator">.</span>bold()); m_chart<span class="operator">-</span><span class="operator">></span>legend()<span class="operator">-</span><span class="operator">></span>setFont(font); } <span class="type">void</span> MainWidget<span class="operator">::</span>toggleItalic() { <span class="type">QFont</span> font <span class="operator">=</span> m_chart<span class="operator">-</span><span class="operator">></span>legend()<span class="operator">-</span><span class="operator">></span>font(); font<span class="operator">.</span>setItalic(<span class="operator">!</span>font<span class="operator">.</span>italic()); m_chart<span class="operator">-</span><span class="operator">></span>legend()<span class="operator">-</span><span class="operator">></span>setFont(font); } <span class="type">void</span> MainWidget<span class="operator">::</span>fontSizeChanged() { <span class="type">QFont</span> font <span class="operator">=</span> m_chart<span class="operator">-</span><span class="operator">></span>legend()<span class="operator">-</span><span class="operator">></span>font(); font<span class="operator">.</span>setPointSizeF(m_fontSize<span class="operator">-</span><span class="operator">></span>value()); m_chart<span class="operator">-</span><span class="operator">></span>legend()<span class="operator">-</span><span class="operator">></span>setFont(font); } <span class="type">void</span> MainWidget<span class="operator">::</span>updateLegendLayout() { m_chart<span class="operator">-</span><span class="operator">></span>legend()<span class="operator">-</span><span class="operator">></span>setGeometry(<span class="type">QRectF</span>(m_legendPosX<span class="operator">-</span><span class="operator">></span>value()<span class="operator">,</span> m_legendPosY<span class="operator">-</span><span class="operator">></span>value()<span class="operator">,</span> m_legendWidth<span class="operator">-</span><span class="operator">></span>value()<span class="operator">,</span> m_legendHeight<span class="operator">-</span><span class="operator">></span>value())); m_chart<span class="operator">-</span><span class="operator">></span>legend()<span class="operator">-</span><span class="operator">></span>update(); } </pre> </div> <!-- @@@legend/mainwidget.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>