<?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>themewidget.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-chartthemes-example.html">Chart Themes Example</a></td><td >themewidget.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">themewidget.cpp Example File</h1> <span class="subtitle">chartthemes/themewidget.cpp</span> <!-- $$$chartthemes/themewidget.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 "themewidget.h"</span> <span class="preprocessor">#include "ui_themewidget.h"</span> <span class="preprocessor">#include <QtCharts/QChartView></span> <span class="preprocessor">#include <QtCharts/QPieSeries></span> <span class="preprocessor">#include <QtCharts/QPieSlice></span> <span class="preprocessor">#include <QtCharts/QAbstractBarSeries></span> <span class="preprocessor">#include <QtCharts/QPercentBarSeries></span> <span class="preprocessor">#include <QtCharts/QStackedBarSeries></span> <span class="preprocessor">#include <QtCharts/QBarSeries></span> <span class="preprocessor">#include <QtCharts/QBarSet></span> <span class="preprocessor">#include <QtCharts/QLineSeries></span> <span class="preprocessor">#include <QtCharts/QSplineSeries></span> <span class="preprocessor">#include <QtCharts/QScatterSeries></span> <span class="preprocessor">#include <QtCharts/QAreaSeries></span> <span class="preprocessor">#include <QtCharts/QLegend></span> <span class="preprocessor">#include <QtWidgets/QGridLayout></span> <span class="preprocessor">#include <QtWidgets/QFormLayout></span> <span class="preprocessor">#include <QtWidgets/QComboBox></span> <span class="preprocessor">#include <QtWidgets/QSpinBox></span> <span class="preprocessor">#include <QtWidgets/QCheckBox></span> <span class="preprocessor">#include <QtWidgets/QGroupBox></span> <span class="preprocessor">#include <QtWidgets/QLabel></span> <span class="preprocessor">#include <QtCore/QRandomGenerator></span> <span class="preprocessor">#include <QtCharts/QBarCategoryAxis></span> <span class="preprocessor">#include <QtWidgets/QApplication></span> <span class="preprocessor">#include <QtCharts/QValueAxis></span> ThemeWidget<span class="operator">::</span>ThemeWidget(<span class="type">QWidget</span> <span class="operator">*</span>parent) : <span class="type">QWidget</span>(parent)<span class="operator">,</span> m_listCount(<span class="number">3</span>)<span class="operator">,</span> m_valueMax(<span class="number">10</span>)<span class="operator">,</span> m_valueCount(<span class="number">7</span>)<span class="operator">,</span> m_dataTable(generateRandomData(m_listCount<span class="operator">,</span> m_valueMax<span class="operator">,</span> m_valueCount))<span class="operator">,</span> m_ui(<span class="keyword">new</span> Ui_ThemeWidgetForm) { m_ui<span class="operator">-</span><span class="operator">></span>setupUi(<span class="keyword">this</span>); populateThemeBox(); populateAnimationBox(); populateLegendBox(); <span class="comment">//create charts</span> <span class="type"><a href="qchartview.html">QChartView</a></span> <span class="operator">*</span>chartView; chartView <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qchartview.html">QChartView</a></span>(createAreaChart()); m_ui<span class="operator">-</span><span class="operator">></span>gridLayout<span class="operator">-</span><span class="operator">></span>addWidget(chartView<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">0</span>); m_charts <span class="operator"><</span><span class="operator"><</span> chartView; chartView <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qchartview.html">QChartView</a></span>(createPieChart()); <span class="comment">// Funny things happen if the pie slice labels do not fit the screen, so we ignore size policy</span> chartView<span class="operator">-</span><span class="operator">></span>setSizePolicy(<span class="type">QSizePolicy</span><span class="operator">::</span>Ignored<span class="operator">,</span> <span class="type">QSizePolicy</span><span class="operator">::</span>Ignored); m_ui<span class="operator">-</span><span class="operator">></span>gridLayout<span class="operator">-</span><span class="operator">></span>addWidget(chartView<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">1</span>); m_charts <span class="operator"><</span><span class="operator"><</span> chartView; chartView <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qchartview.html">QChartView</a></span>(createLineChart()); m_ui<span class="operator">-</span><span class="operator">></span>gridLayout<span class="operator">-</span><span class="operator">></span>addWidget(chartView<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">2</span>); m_charts <span class="operator"><</span><span class="operator"><</span> chartView; chartView <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qchartview.html">QChartView</a></span>(createBarChart(m_valueCount)); m_ui<span class="operator">-</span><span class="operator">></span>gridLayout<span class="operator">-</span><span class="operator">></span>addWidget(chartView<span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">0</span>); m_charts <span class="operator"><</span><span class="operator"><</span> chartView; chartView <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qchartview.html">QChartView</a></span>(createSplineChart()); m_ui<span class="operator">-</span><span class="operator">></span>gridLayout<span class="operator">-</span><span class="operator">></span>addWidget(chartView<span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">1</span>); m_charts <span class="operator"><</span><span class="operator"><</span> chartView; chartView <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qchartview.html">QChartView</a></span>(createScatterChart()); m_ui<span class="operator">-</span><span class="operator">></span>gridLayout<span class="operator">-</span><span class="operator">></span>addWidget(chartView<span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">2</span>); m_charts <span class="operator"><</span><span class="operator"><</span> chartView; <span class="comment">// Set defaults</span> m_ui<span class="operator">-</span><span class="operator">></span>antialiasCheckBox<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>); <span class="comment">// Set the colors from the light theme as default ones</span> <span class="type">QPalette</span> pal <span class="operator">=</span> qApp<span class="operator">-</span><span class="operator">></span>palette(); pal<span class="operator">.</span>setColor(<span class="type">QPalette</span><span class="operator">::</span>Window<span class="operator">,</span> <span class="type">QRgb</span>(<span class="number">0xf0f0f0</span>)); pal<span class="operator">.</span>setColor(<span class="type">QPalette</span><span class="operator">::</span>WindowText<span class="operator">,</span> <span class="type">QRgb</span>(<span class="number">0x404044</span>)); qApp<span class="operator">-</span><span class="operator">></span>setPalette(pal); updateUI(); } ThemeWidget<span class="operator">::</span><span class="operator">~</span>ThemeWidget() { <span class="keyword">delete</span> m_ui; } DataTable ThemeWidget<span class="operator">::</span>generateRandomData(<span class="type">int</span> listCount<span class="operator">,</span> <span class="type">int</span> valueMax<span class="operator">,</span> <span class="type">int</span> valueCount) <span class="keyword">const</span> { DataTable dataTable; <span class="comment">// generate random data</span> <span class="keyword">for</span> (<span class="type">int</span> i(<span class="number">0</span>); i <span class="operator"><</span> listCount; i<span class="operator">+</span><span class="operator">+</span>) { DataList dataList; <span class="type">qreal</span> yValue(<span class="number">0</span>); <span class="keyword">for</span> (<span class="type">int</span> j(<span class="number">0</span>); j <span class="operator"><</span> valueCount; j<span class="operator">+</span><span class="operator">+</span>) { yValue <span class="operator">=</span> yValue <span class="operator">+</span> <span class="type">QRandomGenerator</span><span class="operator">::</span>global()<span class="operator">-</span><span class="operator">></span>bounded(valueMax <span class="operator">/</span> (<span class="type">qreal</span>) valueCount); <span class="type">QPointF</span> value((j <span class="operator">+</span> <span class="type">QRandomGenerator</span><span class="operator">::</span>global()<span class="operator">-</span><span class="operator">></span>generateDouble()) <span class="operator">*</span> ((<span class="type">qreal</span>) m_valueMax <span class="operator">/</span> (<span class="type">qreal</span>) valueCount)<span class="operator">,</span> yValue); <span class="type">QString</span> label <span class="operator">=</span> <span class="string">"Slice "</span> <span class="operator">+</span> <span class="type">QString</span><span class="operator">::</span>number(i) <span class="operator">+</span> <span class="string">":"</span> <span class="operator">+</span> <span class="type">QString</span><span class="operator">::</span>number(j); dataList <span class="operator"><</span><span class="operator"><</span> Data(value<span class="operator">,</span> label); } dataTable <span class="operator"><</span><span class="operator"><</span> dataList; } <span class="keyword">return</span> dataTable; } <span class="type">void</span> ThemeWidget<span class="operator">::</span>populateThemeBox() { <span class="comment">// add items to theme combobox</span> m_ui<span class="operator">-</span><span class="operator">></span>themeComboBox<span class="operator">-</span><span class="operator">></span>addItem(<span class="string">"Light"</span><span class="operator">,</span> <span class="type"><a href="qchart.html">QChart</a></span><span class="operator">::</span>ChartThemeLight); m_ui<span class="operator">-</span><span class="operator">></span>themeComboBox<span class="operator">-</span><span class="operator">></span>addItem(<span class="string">"Blue Cerulean"</span><span class="operator">,</span> <span class="type"><a href="qchart.html">QChart</a></span><span class="operator">::</span>ChartThemeBlueCerulean); m_ui<span class="operator">-</span><span class="operator">></span>themeComboBox<span class="operator">-</span><span class="operator">></span>addItem(<span class="string">"Dark"</span><span class="operator">,</span> <span class="type"><a href="qchart.html">QChart</a></span><span class="operator">::</span>ChartThemeDark); m_ui<span class="operator">-</span><span class="operator">></span>themeComboBox<span class="operator">-</span><span class="operator">></span>addItem(<span class="string">"Brown Sand"</span><span class="operator">,</span> <span class="type"><a href="qchart.html">QChart</a></span><span class="operator">::</span>ChartThemeBrownSand); m_ui<span class="operator">-</span><span class="operator">></span>themeComboBox<span class="operator">-</span><span class="operator">></span>addItem(<span class="string">"Blue NCS"</span><span class="operator">,</span> <span class="type"><a href="qchart.html">QChart</a></span><span class="operator">::</span>ChartThemeBlueNcs); m_ui<span class="operator">-</span><span class="operator">></span>themeComboBox<span class="operator">-</span><span class="operator">></span>addItem(<span class="string">"High Contrast"</span><span class="operator">,</span> <span class="type"><a href="qchart.html">QChart</a></span><span class="operator">::</span>ChartThemeHighContrast); m_ui<span class="operator">-</span><span class="operator">></span>themeComboBox<span class="operator">-</span><span class="operator">></span>addItem(<span class="string">"Blue Icy"</span><span class="operator">,</span> <span class="type"><a href="qchart.html">QChart</a></span><span class="operator">::</span>ChartThemeBlueIcy); m_ui<span class="operator">-</span><span class="operator">></span>themeComboBox<span class="operator">-</span><span class="operator">></span>addItem(<span class="string">"Qt"</span><span class="operator">,</span> <span class="type"><a href="qchart.html">QChart</a></span><span class="operator">::</span>ChartThemeQt); } <span class="type">void</span> ThemeWidget<span class="operator">::</span>populateAnimationBox() { <span class="comment">// add items to animation combobox</span> m_ui<span class="operator">-</span><span class="operator">></span>animatedComboBox<span class="operator">-</span><span class="operator">></span>addItem(<span class="string">"No Animations"</span><span class="operator">,</span> <span class="type"><a href="qchart.html">QChart</a></span><span class="operator">::</span>NoAnimation); m_ui<span class="operator">-</span><span class="operator">></span>animatedComboBox<span class="operator">-</span><span class="operator">></span>addItem(<span class="string">"GridAxis Animations"</span><span class="operator">,</span> <span class="type"><a href="qchart.html">QChart</a></span><span class="operator">::</span>GridAxisAnimations); m_ui<span class="operator">-</span><span class="operator">></span>animatedComboBox<span class="operator">-</span><span class="operator">></span>addItem(<span class="string">"Series Animations"</span><span class="operator">,</span> <span class="type"><a href="qchart.html">QChart</a></span><span class="operator">::</span>SeriesAnimations); m_ui<span class="operator">-</span><span class="operator">></span>animatedComboBox<span class="operator">-</span><span class="operator">></span>addItem(<span class="string">"All Animations"</span><span class="operator">,</span> <span class="type"><a href="qchart.html">QChart</a></span><span class="operator">::</span>AllAnimations); } <span class="type">void</span> ThemeWidget<span class="operator">::</span>populateLegendBox() { <span class="comment">// add items to legend combobox</span> m_ui<span class="operator">-</span><span class="operator">></span>legendComboBox<span class="operator">-</span><span class="operator">></span>addItem(<span class="string">"No Legend "</span><span class="operator">,</span> <span class="number">0</span>); m_ui<span class="operator">-</span><span class="operator">></span>legendComboBox<span class="operator">-</span><span class="operator">></span>addItem(<span class="string">"Legend Top"</span><span class="operator">,</span> <span class="type">Qt</span><span class="operator">::</span>AlignTop); m_ui<span class="operator">-</span><span class="operator">></span>legendComboBox<span class="operator">-</span><span class="operator">></span>addItem(<span class="string">"Legend Bottom"</span><span class="operator">,</span> <span class="type">Qt</span><span class="operator">::</span>AlignBottom); m_ui<span class="operator">-</span><span class="operator">></span>legendComboBox<span class="operator">-</span><span class="operator">></span>addItem(<span class="string">"Legend Left"</span><span class="operator">,</span> <span class="type">Qt</span><span class="operator">::</span>AlignLeft); m_ui<span class="operator">-</span><span class="operator">></span>legendComboBox<span class="operator">-</span><span class="operator">></span>addItem(<span class="string">"Legend Right"</span><span class="operator">,</span> <span class="type">Qt</span><span class="operator">::</span>AlignRight); } <span class="type"><a href="qchart.html">QChart</a></span> <span class="operator">*</span>ThemeWidget<span class="operator">::</span>createAreaChart() <span class="keyword">const</span> { <span class="type"><a href="qchart.html">QChart</a></span> <span class="operator">*</span>chart <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qchart.html">QChart</a></span>(); chart<span class="operator">-</span><span class="operator">></span>setTitle(<span class="string">"Area chart"</span>); <span class="comment">// The lower series initialized to zero values</span> <span class="type"><a href="qlineseries.html">QLineSeries</a></span> <span class="operator">*</span>lowerSeries <span class="operator">=</span> <span class="number">0</span>; <span class="type">QString</span> name(<span class="string">"Series "</span>); <span class="type">int</span> nameIndex <span class="operator">=</span> <span class="number">0</span>; <span class="keyword">for</span> (<span class="type">int</span> i(<span class="number">0</span>); i <span class="operator"><</span> m_dataTable<span class="operator">.</span>count(); i<span class="operator">+</span><span class="operator">+</span>) { <span class="type"><a href="qlineseries.html">QLineSeries</a></span> <span class="operator">*</span>upperSeries <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlineseries.html">QLineSeries</a></span>(chart); <span class="keyword">for</span> (<span class="type">int</span> j(<span class="number">0</span>); j <span class="operator"><</span> m_dataTable<span class="operator">[</span>i<span class="operator">]</span><span class="operator">.</span>count(); j<span class="operator">+</span><span class="operator">+</span>) { Data data <span class="operator">=</span> m_dataTable<span class="operator">[</span>i<span class="operator">]</span><span class="operator">.</span>at(j); <span class="keyword">if</span> (lowerSeries) { <span class="keyword">const</span> <span class="type">QVector</span><span class="operator"><</span><span class="type">QPointF</span><span class="operator">></span><span class="operator">&</span> points <span class="operator">=</span> lowerSeries<span class="operator">-</span><span class="operator">></span>pointsVector(); upperSeries<span class="operator">-</span><span class="operator">></span>append(<span class="type">QPointF</span>(j<span class="operator">,</span> points<span class="operator">[</span>i<span class="operator">]</span><span class="operator">.</span>y() <span class="operator">+</span> data<span class="operator">.</span>first<span class="operator">.</span>y())); } <span class="keyword">else</span> { upperSeries<span class="operator">-</span><span class="operator">></span>append(<span class="type">QPointF</span>(j<span class="operator">,</span> data<span class="operator">.</span>first<span class="operator">.</span>y())); } } <span class="type"><a href="qareaseries.html">QAreaSeries</a></span> <span class="operator">*</span>area <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qareaseries.html">QAreaSeries</a></span>(upperSeries<span class="operator">,</span> lowerSeries); area<span class="operator">-</span><span class="operator">></span>setName(name <span class="operator">+</span> <span class="type">QString</span><span class="operator">::</span>number(nameIndex)); nameIndex<span class="operator">+</span><span class="operator">+</span>; chart<span class="operator">-</span><span class="operator">></span>addSeries(area); lowerSeries <span class="operator">=</span> upperSeries; } chart<span class="operator">-</span><span class="operator">></span>createDefaultAxes(); chart<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>setRange(<span class="number">0</span><span class="operator">,</span> m_valueCount <span class="operator">-</span> <span class="number">1</span>); chart<span class="operator">-</span><span class="operator">></span>axes(<span class="type">Qt</span><span class="operator">::</span>Vertical)<span class="operator">.</span>first()<span class="operator">-</span><span class="operator">></span>setRange(<span class="number">0</span><span class="operator">,</span> m_valueMax); <span class="comment">// Add space to label to add space between labels and axis</span> <span class="type"><a href="qvalueaxis.html">QValueAxis</a></span> <span class="operator">*</span>axisY <span class="operator">=</span> qobject_cast<span class="operator"><</span><span class="type"><a href="qvalueaxis.html">QValueAxis</a></span><span class="operator">*</span><span class="operator">></span>(chart<span class="operator">-</span><span class="operator">></span>axes(<span class="type">Qt</span><span class="operator">::</span>Vertical)<span class="operator">.</span>first()); Q_ASSERT(axisY); axisY<span class="operator">-</span><span class="operator">></span>setLabelFormat(<span class="string">"%.1f "</span>); <span class="keyword">return</span> chart; } <span class="type"><a href="qchart.html">QChart</a></span> <span class="operator">*</span>ThemeWidget<span class="operator">::</span>createBarChart(<span class="type">int</span> valueCount) <span class="keyword">const</span> { Q_UNUSED(valueCount); <span class="type"><a href="qchart.html">QChart</a></span> <span class="operator">*</span>chart <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qchart.html">QChart</a></span>(); chart<span class="operator">-</span><span class="operator">></span>setTitle(<span class="string">"Bar chart"</span>); <span class="type"><a href="qstackedbarseries.html">QStackedBarSeries</a></span> <span class="operator">*</span>series <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qstackedbarseries.html">QStackedBarSeries</a></span>(chart); <span class="keyword">for</span> (<span class="type">int</span> i(<span class="number">0</span>); i <span class="operator"><</span> m_dataTable<span class="operator">.</span>count(); i<span class="operator">+</span><span class="operator">+</span>) { <span class="type"><a href="qbarset.html">QBarSet</a></span> <span class="operator">*</span>set <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qbarset.html">QBarSet</a></span>(<span class="string">"Bar set "</span> <span class="operator">+</span> <span class="type">QString</span><span class="operator">::</span>number(i)); <span class="keyword">for</span> (<span class="keyword">const</span> Data <span class="operator">&</span>data : m_dataTable<span class="operator">[</span>i<span class="operator">]</span>) <span class="operator">*</span>set <span class="operator"><</span><span class="operator"><</span> data<span class="operator">.</span>first<span class="operator">.</span>y(); series<span class="operator">-</span><span class="operator">></span>append(set); } chart<span class="operator">-</span><span class="operator">></span>addSeries(series); chart<span class="operator">-</span><span class="operator">></span>createDefaultAxes(); chart<span class="operator">-</span><span class="operator">></span>axes(<span class="type">Qt</span><span class="operator">::</span>Vertical)<span class="operator">.</span>first()<span class="operator">-</span><span class="operator">></span>setRange(<span class="number">0</span><span class="operator">,</span> m_valueMax <span class="operator">*</span> <span class="number">2</span>); <span class="comment">// Add space to label to add space between labels and axis</span> <span class="type"><a href="qvalueaxis.html">QValueAxis</a></span> <span class="operator">*</span>axisY <span class="operator">=</span> qobject_cast<span class="operator"><</span><span class="type"><a href="qvalueaxis.html">QValueAxis</a></span><span class="operator">*</span><span class="operator">></span>(chart<span class="operator">-</span><span class="operator">></span>axes(<span class="type">Qt</span><span class="operator">::</span>Vertical)<span class="operator">.</span>first()); Q_ASSERT(axisY); axisY<span class="operator">-</span><span class="operator">></span>setLabelFormat(<span class="string">"%.1f "</span>); <span class="keyword">return</span> chart; } <span class="type"><a href="qchart.html">QChart</a></span> <span class="operator">*</span>ThemeWidget<span class="operator">::</span>createLineChart() <span class="keyword">const</span> { <span class="type"><a href="qchart.html">QChart</a></span> <span class="operator">*</span>chart <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qchart.html">QChart</a></span>(); chart<span class="operator">-</span><span class="operator">></span>setTitle(<span class="string">"Line chart"</span>); <span class="type">QString</span> name(<span class="string">"Series "</span>); <span class="type">int</span> nameIndex <span class="operator">=</span> <span class="number">0</span>; <span class="keyword">for</span> (<span class="keyword">const</span> DataList <span class="operator">&</span>list : m_dataTable) { <span class="type"><a href="qlineseries.html">QLineSeries</a></span> <span class="operator">*</span>series <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlineseries.html">QLineSeries</a></span>(chart); <span class="keyword">for</span> (<span class="keyword">const</span> Data <span class="operator">&</span>data : list) series<span class="operator">-</span><span class="operator">></span>append(data<span class="operator">.</span>first); series<span class="operator">-</span><span class="operator">></span>setName(name <span class="operator">+</span> <span class="type">QString</span><span class="operator">::</span>number(nameIndex)); nameIndex<span class="operator">+</span><span class="operator">+</span>; chart<span class="operator">-</span><span class="operator">></span>addSeries(series); } chart<span class="operator">-</span><span class="operator">></span>createDefaultAxes(); chart<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>setRange(<span class="number">0</span><span class="operator">,</span> m_valueMax); chart<span class="operator">-</span><span class="operator">></span>axes(<span class="type">Qt</span><span class="operator">::</span>Vertical)<span class="operator">.</span>first()<span class="operator">-</span><span class="operator">></span>setRange(<span class="number">0</span><span class="operator">,</span> m_valueCount); <span class="comment">// Add space to label to add space between labels and axis</span> <span class="type"><a href="qvalueaxis.html">QValueAxis</a></span> <span class="operator">*</span>axisY <span class="operator">=</span> qobject_cast<span class="operator"><</span><span class="type"><a href="qvalueaxis.html">QValueAxis</a></span><span class="operator">*</span><span class="operator">></span>(chart<span class="operator">-</span><span class="operator">></span>axes(<span class="type">Qt</span><span class="operator">::</span>Vertical)<span class="operator">.</span>first()); Q_ASSERT(axisY); axisY<span class="operator">-</span><span class="operator">></span>setLabelFormat(<span class="string">"%.1f "</span>); <span class="keyword">return</span> chart; } <span class="type"><a href="qchart.html">QChart</a></span> <span class="operator">*</span>ThemeWidget<span class="operator">::</span>createPieChart() <span class="keyword">const</span> { <span class="type"><a href="qchart.html">QChart</a></span> <span class="operator">*</span>chart <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qchart.html">QChart</a></span>(); chart<span class="operator">-</span><span class="operator">></span>setTitle(<span class="string">"Pie chart"</span>); <span class="type"><a href="qpieseries.html">QPieSeries</a></span> <span class="operator">*</span>series <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpieseries.html">QPieSeries</a></span>(chart); <span class="keyword">for</span> (<span class="keyword">const</span> Data <span class="operator">&</span>data : m_dataTable<span class="operator">[</span><span class="number">0</span><span class="operator">]</span>) { <span class="type"><a href="qpieslice.html">QPieSlice</a></span> <span class="operator">*</span>slice <span class="operator">=</span> series<span class="operator">-</span><span class="operator">></span>append(data<span class="operator">.</span>second<span class="operator">,</span> data<span class="operator">.</span>first<span class="operator">.</span>y()); <span class="keyword">if</span> (data <span class="operator">=</span><span class="operator">=</span> m_dataTable<span class="operator">[</span><span class="number">0</span><span class="operator">]</span><span class="operator">.</span>first()) { <span class="comment">// Show the first slice exploded with label</span> slice<span class="operator">-</span><span class="operator">></span>setLabelVisible(); slice<span class="operator">-</span><span class="operator">></span>setExploded(); slice<span class="operator">-</span><span class="operator">></span>setExplodeDistanceFactor(<span class="number">0.5</span>); } } series<span class="operator">-</span><span class="operator">></span>setPieSize(<span class="number">0.4</span>); chart<span class="operator">-</span><span class="operator">></span>addSeries(series); <span class="keyword">return</span> chart; } <span class="type"><a href="qchart.html">QChart</a></span> <span class="operator">*</span>ThemeWidget<span class="operator">::</span>createSplineChart() <span class="keyword">const</span> { <span class="type"><a href="qchart.html">QChart</a></span> <span class="operator">*</span>chart <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qchart.html">QChart</a></span>(); chart<span class="operator">-</span><span class="operator">></span>setTitle(<span class="string">"Spline chart"</span>); <span class="type">QString</span> name(<span class="string">"Series "</span>); <span class="type">int</span> nameIndex <span class="operator">=</span> <span class="number">0</span>; <span class="keyword">for</span> (<span class="keyword">const</span> DataList <span class="operator">&</span>list : m_dataTable) { <span class="type"><a href="qsplineseries.html">QSplineSeries</a></span> <span class="operator">*</span>series <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qsplineseries.html">QSplineSeries</a></span>(chart); <span class="keyword">for</span> (<span class="keyword">const</span> Data <span class="operator">&</span>data : list) series<span class="operator">-</span><span class="operator">></span>append(data<span class="operator">.</span>first); series<span class="operator">-</span><span class="operator">></span>setName(name <span class="operator">+</span> <span class="type">QString</span><span class="operator">::</span>number(nameIndex)); nameIndex<span class="operator">+</span><span class="operator">+</span>; chart<span class="operator">-</span><span class="operator">></span>addSeries(series); } chart<span class="operator">-</span><span class="operator">></span>createDefaultAxes(); chart<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>setRange(<span class="number">0</span><span class="operator">,</span> m_valueMax); chart<span class="operator">-</span><span class="operator">></span>axes(<span class="type">Qt</span><span class="operator">::</span>Vertical)<span class="operator">.</span>first()<span class="operator">-</span><span class="operator">></span>setRange(<span class="number">0</span><span class="operator">,</span> m_valueCount); <span class="comment">// Add space to label to add space between labels and axis</span> <span class="type"><a href="qvalueaxis.html">QValueAxis</a></span> <span class="operator">*</span>axisY <span class="operator">=</span> qobject_cast<span class="operator"><</span><span class="type"><a href="qvalueaxis.html">QValueAxis</a></span><span class="operator">*</span><span class="operator">></span>(chart<span class="operator">-</span><span class="operator">></span>axes(<span class="type">Qt</span><span class="operator">::</span>Vertical)<span class="operator">.</span>first()); Q_ASSERT(axisY); axisY<span class="operator">-</span><span class="operator">></span>setLabelFormat(<span class="string">"%.1f "</span>); <span class="keyword">return</span> chart; } <span class="type"><a href="qchart.html">QChart</a></span> <span class="operator">*</span>ThemeWidget<span class="operator">::</span>createScatterChart() <span class="keyword">const</span> { <span class="comment">// scatter chart</span> <span class="type"><a href="qchart.html">QChart</a></span> <span class="operator">*</span>chart <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qchart.html">QChart</a></span>(); chart<span class="operator">-</span><span class="operator">></span>setTitle(<span class="string">"Scatter chart"</span>); <span class="type">QString</span> name(<span class="string">"Series "</span>); <span class="type">int</span> nameIndex <span class="operator">=</span> <span class="number">0</span>; <span class="keyword">for</span> (<span class="keyword">const</span> DataList <span class="operator">&</span>list : m_dataTable) { <span class="type"><a href="qscatterseries.html">QScatterSeries</a></span> <span class="operator">*</span>series <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qscatterseries.html">QScatterSeries</a></span>(chart); <span class="keyword">for</span> (<span class="keyword">const</span> Data <span class="operator">&</span>data : list) series<span class="operator">-</span><span class="operator">></span>append(data<span class="operator">.</span>first); series<span class="operator">-</span><span class="operator">></span>setName(name <span class="operator">+</span> <span class="type">QString</span><span class="operator">::</span>number(nameIndex)); nameIndex<span class="operator">+</span><span class="operator">+</span>; chart<span class="operator">-</span><span class="operator">></span>addSeries(series); } chart<span class="operator">-</span><span class="operator">></span>createDefaultAxes(); chart<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>setRange(<span class="number">0</span><span class="operator">,</span> m_valueMax); chart<span class="operator">-</span><span class="operator">></span>axes(<span class="type">Qt</span><span class="operator">::</span>Vertical)<span class="operator">.</span>first()<span class="operator">-</span><span class="operator">></span>setRange(<span class="number">0</span><span class="operator">,</span> m_valueCount); <span class="comment">// Add space to label to add space between labels and axis</span> <span class="type"><a href="qvalueaxis.html">QValueAxis</a></span> <span class="operator">*</span>axisY <span class="operator">=</span> qobject_cast<span class="operator"><</span><span class="type"><a href="qvalueaxis.html">QValueAxis</a></span><span class="operator">*</span><span class="operator">></span>(chart<span class="operator">-</span><span class="operator">></span>axes(<span class="type">Qt</span><span class="operator">::</span>Vertical)<span class="operator">.</span>first()); Q_ASSERT(axisY); axisY<span class="operator">-</span><span class="operator">></span>setLabelFormat(<span class="string">"%.1f "</span>); <span class="keyword">return</span> chart; } <span class="type">void</span> ThemeWidget<span class="operator">::</span>updateUI() { <span class="type"><a href="qchart.html">QChart</a></span><span class="operator">::</span>ChartTheme theme <span class="operator">=</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type"><a href="qchart.html">QChart</a></span><span class="operator">::</span>ChartTheme<span class="operator">></span>( m_ui<span class="operator">-</span><span class="operator">></span>themeComboBox<span class="operator">-</span><span class="operator">></span>itemData(m_ui<span class="operator">-</span><span class="operator">></span>themeComboBox<span class="operator">-</span><span class="operator">></span>currentIndex())<span class="operator">.</span>toInt()); <span class="keyword">const</span> <span class="keyword">auto</span> charts <span class="operator">=</span> m_charts; <span class="keyword">if</span> (<span class="operator">!</span>m_charts<span class="operator">.</span>isEmpty() <span class="operator">&</span><span class="operator">&</span> m_charts<span class="operator">.</span>at(<span class="number">0</span>)<span class="operator">-</span><span class="operator">></span>chart()<span class="operator">-</span><span class="operator">></span>theme() <span class="operator">!</span><span class="operator">=</span> theme) { <span class="keyword">for</span> (<span class="type"><a href="qchartview.html">QChartView</a></span> <span class="operator">*</span>chartView : charts) { chartView<span class="operator">-</span><span class="operator">></span>chart()<span class="operator">-</span><span class="operator">></span>setTheme(theme); } <span class="comment">// Set palette colors based on selected theme</span> <span class="type">QPalette</span> pal <span class="operator">=</span> window()<span class="operator">-</span><span class="operator">></span>palette(); <span class="keyword">if</span> (theme <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qchart.html">QChart</a></span><span class="operator">::</span>ChartThemeLight) { pal<span class="operator">.</span>setColor(<span class="type">QPalette</span><span class="operator">::</span>Window<span class="operator">,</span> <span class="type">QRgb</span>(<span class="number">0xf0f0f0</span>)); pal<span class="operator">.</span>setColor(<span class="type">QPalette</span><span class="operator">::</span>WindowText<span class="operator">,</span> <span class="type">QRgb</span>(<span class="number">0x404044</span>)); } <span class="keyword">else</span> <span class="keyword">if</span> (theme <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qchart.html">QChart</a></span><span class="operator">::</span>ChartThemeDark) { pal<span class="operator">.</span>setColor(<span class="type">QPalette</span><span class="operator">::</span>Window<span class="operator">,</span> <span class="type">QRgb</span>(<span class="number">0x121218</span>)); pal<span class="operator">.</span>setColor(<span class="type">QPalette</span><span class="operator">::</span>WindowText<span class="operator">,</span> <span class="type">QRgb</span>(<span class="number">0xd6d6d6</span>)); } <span class="keyword">else</span> <span class="keyword">if</span> (theme <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qchart.html">QChart</a></span><span class="operator">::</span>ChartThemeBlueCerulean) { pal<span class="operator">.</span>setColor(<span class="type">QPalette</span><span class="operator">::</span>Window<span class="operator">,</span> <span class="type">QRgb</span>(<span class="number">0x40434a</span>)); pal<span class="operator">.</span>setColor(<span class="type">QPalette</span><span class="operator">::</span>WindowText<span class="operator">,</span> <span class="type">QRgb</span>(<span class="number">0xd6d6d6</span>)); } <span class="keyword">else</span> <span class="keyword">if</span> (theme <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qchart.html">QChart</a></span><span class="operator">::</span>ChartThemeBrownSand) { pal<span class="operator">.</span>setColor(<span class="type">QPalette</span><span class="operator">::</span>Window<span class="operator">,</span> <span class="type">QRgb</span>(<span class="number">0x9e8965</span>)); pal<span class="operator">.</span>setColor(<span class="type">QPalette</span><span class="operator">::</span>WindowText<span class="operator">,</span> <span class="type">QRgb</span>(<span class="number">0x404044</span>)); } <span class="keyword">else</span> <span class="keyword">if</span> (theme <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qchart.html">QChart</a></span><span class="operator">::</span>ChartThemeBlueNcs) { pal<span class="operator">.</span>setColor(<span class="type">QPalette</span><span class="operator">::</span>Window<span class="operator">,</span> <span class="type">QRgb</span>(<span class="number">0x018bba</span>)); pal<span class="operator">.</span>setColor(<span class="type">QPalette</span><span class="operator">::</span>WindowText<span class="operator">,</span> <span class="type">QRgb</span>(<span class="number">0x404044</span>)); } <span class="keyword">else</span> <span class="keyword">if</span> (theme <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qchart.html">QChart</a></span><span class="operator">::</span>ChartThemeHighContrast) { pal<span class="operator">.</span>setColor(<span class="type">QPalette</span><span class="operator">::</span>Window<span class="operator">,</span> <span class="type">QRgb</span>(<span class="number">0xffab03</span>)); pal<span class="operator">.</span>setColor(<span class="type">QPalette</span><span class="operator">::</span>WindowText<span class="operator">,</span> <span class="type">QRgb</span>(<span class="number">0x181818</span>)); } <span class="keyword">else</span> <span class="keyword">if</span> (theme <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qchart.html">QChart</a></span><span class="operator">::</span>ChartThemeBlueIcy) { pal<span class="operator">.</span>setColor(<span class="type">QPalette</span><span class="operator">::</span>Window<span class="operator">,</span> <span class="type">QRgb</span>(<span class="number">0xcee7f0</span>)); pal<span class="operator">.</span>setColor(<span class="type">QPalette</span><span class="operator">::</span>WindowText<span class="operator">,</span> <span class="type">QRgb</span>(<span class="number">0x404044</span>)); } <span class="keyword">else</span> { pal<span class="operator">.</span>setColor(<span class="type">QPalette</span><span class="operator">::</span>Window<span class="operator">,</span> <span class="type">QRgb</span>(<span class="number">0xf0f0f0</span>)); pal<span class="operator">.</span>setColor(<span class="type">QPalette</span><span class="operator">::</span>WindowText<span class="operator">,</span> <span class="type">QRgb</span>(<span class="number">0x404044</span>)); } window()<span class="operator">-</span><span class="operator">></span>setPalette(pal); } <span class="comment">// Update antialiasing</span> bool checked <span class="operator">=</span> m_ui<span class="operator">-</span><span class="operator">></span>antialiasCheckBox<span class="operator">-</span><span class="operator">></span>isChecked(); <span class="keyword">for</span> (<span class="type"><a href="qchartview.html">QChartView</a></span> <span class="operator">*</span>chart : charts) chart<span class="operator">-</span><span class="operator">></span>setRenderHint(<span class="type">QPainter</span><span class="operator">::</span>Antialiasing<span class="operator">,</span> checked); <span class="comment">// Update animation options</span> <span class="type"><a href="qchart.html">QChart</a></span><span class="operator">::</span>AnimationOptions options( m_ui<span class="operator">-</span><span class="operator">></span>animatedComboBox<span class="operator">-</span><span class="operator">></span>itemData(m_ui<span class="operator">-</span><span class="operator">></span>animatedComboBox<span class="operator">-</span><span class="operator">></span>currentIndex())<span class="operator">.</span>toInt()); <span class="keyword">if</span> (<span class="operator">!</span>m_charts<span class="operator">.</span>isEmpty() <span class="operator">&</span><span class="operator">&</span> m_charts<span class="operator">.</span>at(<span class="number">0</span>)<span class="operator">-</span><span class="operator">></span>chart()<span class="operator">-</span><span class="operator">></span>animationOptions() <span class="operator">!</span><span class="operator">=</span> options) { <span class="keyword">for</span> (<span class="type"><a href="qchartview.html">QChartView</a></span> <span class="operator">*</span>chartView : charts) chartView<span class="operator">-</span><span class="operator">></span>chart()<span class="operator">-</span><span class="operator">></span>setAnimationOptions(options); } <span class="comment">// Update legend alignment</span> <span class="type">Qt</span><span class="operator">::</span>Alignment alignment( m_ui<span class="operator">-</span><span class="operator">></span>legendComboBox<span class="operator">-</span><span class="operator">></span>itemData(m_ui<span class="operator">-</span><span class="operator">></span>legendComboBox<span class="operator">-</span><span class="operator">></span>currentIndex())<span class="operator">.</span>toInt()); <span class="keyword">if</span> (<span class="operator">!</span>alignment) { <span class="keyword">for</span> (<span class="type"><a href="qchartview.html">QChartView</a></span> <span class="operator">*</span>chartView : charts) chartView<span class="operator">-</span><span class="operator">></span>chart()<span class="operator">-</span><span class="operator">></span>legend()<span class="operator">-</span><span class="operator">></span>hide(); } <span class="keyword">else</span> { <span class="keyword">for</span> (<span class="type"><a href="qchartview.html">QChartView</a></span> <span class="operator">*</span>chartView : charts) { chartView<span class="operator">-</span><span class="operator">></span>chart()<span class="operator">-</span><span class="operator">></span>legend()<span class="operator">-</span><span class="operator">></span>setAlignment(alignment); chartView<span class="operator">-</span><span class="operator">></span>chart()<span class="operator">-</span><span class="operator">></span>legend()<span class="operator">-</span><span class="operator">></span>show(); } } } </pre> </div> <!-- @@@chartthemes/themewidget.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>