Qt 5.9 | Qt Charts | Pie Chart Customization Example | mainwidget.h Example File

Qt 5.9.3 Reference Documentation

# mainwidget.h Example File

piechartcustomization/mainwidget.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
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      ** information use the contact form at https://www.qt.io/contact-us.
      **
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      ** Alternatively, this file may be used under the terms of the GNU
      ** General Public License version 3 or (at your option) any later version
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      ** the Free Software Foundation and appearing in the file LICENSE.GPL3
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      #ifndef MAINWIDGET_H
      #define MAINWIDGET_H

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

      class QLineEdit;
      class QPushButton;
      class QCheckBox;
      class QComboBox;
      class QDoubleSpinBox;

      class PenTool;
      class BrushTool;
      class CustomSlice;

      QT_CHARTS_BEGIN_NAMESPACE
      class QChartView;
      class QPieSeries;
      class QPieSlice;
      QT_CHARTS_END_NAMESPACE

      QT_CHARTS_USE_NAMESPACE

      class MainWidget : public QWidget
      {
          Q_OBJECT

      public:
          explicit MainWidget(QWidget *parent = 0);

      public Q_SLOTS:
          void updateChartSettings();
          void updateSerieSettings();
          void updateSliceSettings();
          void handleSliceClicked(QPieSlice *slice);
          void showFontDialog();
          void appendSlice();
          void insertSlice();
          void removeSlice();

      private:
          QComboBox *m_themeComboBox;
          QCheckBox *m_aaCheckBox;
          QCheckBox *m_animationsCheckBox;
          QCheckBox *m_legendCheckBox;

          QChartView *m_chartView;
          QPieSeries *m_series;
          CustomSlice *m_slice;

          QDoubleSpinBox *m_hPosition;
          QDoubleSpinBox *m_vPosition;
          QDoubleSpinBox *m_sizeFactor;
          QDoubleSpinBox *m_startAngle;
          QDoubleSpinBox *m_endAngle;
          QDoubleSpinBox *m_holeSize;

          QLineEdit *m_sliceName;
          QDoubleSpinBox *m_sliceValue;
          QCheckBox *m_sliceLabelVisible;
          QDoubleSpinBox *m_sliceLabelArmFactor;
          QCheckBox *m_sliceExploded;
          QDoubleSpinBox *m_sliceExplodedFactor;
          QPushButton *m_brush;
          BrushTool *m_brushTool;
          QPushButton *m_pen;
          PenTool *m_penTool;
          QPushButton *m_font;
          QPushButton *m_labelBrush;
          QComboBox *m_labelPosition;
          BrushTool *m_labelBrushTool;
      };

      #endif // MAINWIDGET_H