Qt 5.7 | Qt Charts | Chart Themes Example | themewidget.h Example File

Qt 5.7.1 Reference Documentation

# themewidget.h Example File

chartthemes/themewidget.h

      /****************************************************************************
      **
      ** 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.
      **
      ** $QT_END_LICENSE$
      **
      ****************************************************************************/

      #ifndef THEMEWIDGET_H
      #define THEMEWIDGET_H

      #include <QtWidgets/QWidget>
      #include <QtCharts/QChartGlobal>

      class QComboBox;
      class QCheckBox;

      QT_CHARTS_BEGIN_NAMESPACE
      class QChartView;
      class QChart;
      QT_CHARTS_END_NAMESPACE

      typedef QPair<QPointF, QString> Data;
      typedef QList<Data> DataList;
      typedef QList<DataList> DataTable;

      QT_CHARTS_USE_NAMESPACE

      class ThemeWidget: public QWidget
      {
          Q_OBJECT
      public:
          explicit ThemeWidget(QWidget *parent = 0);
          ~ThemeWidget();

      private Q_SLOTS:
          void updateUI();

      private:
          DataTable generateRandomData(int listCount, int valueMax, int valueCount) const;
          QComboBox *createThemeBox() const;
          QComboBox *createAnimationBox() const;
          QComboBox *createLegendBox() const;
          void connectSignals();
          QChart *createAreaChart() const;
          QChart *createBarChart(int valueCount) const;
          QChart *createPieChart() const;
          QChart *createLineChart() const;
          QChart *createSplineChart() const;
          QChart *createScatterChart() const;

      private:
          int m_listCount;
          int m_valueMax;
          int m_valueCount;
          QList<QChartView *> m_charts;
          DataTable m_dataTable;

          QComboBox *m_themeComboBox;
          QCheckBox *m_antialiasCheckBox;
          QComboBox *m_animatedComboBox;
          QComboBox *m_legendComboBox;
      };

      #endif /* THEMEWIDGET_H */