mainwidget.h Example File

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  ** Contact: https://www.qt.io/licensing/
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  ** This file is part of the Qt Charts module of the Qt Toolkit.
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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