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#ifndef PERSALYS_PIECHARTVIEW_HXX
#define PERSALYS_PIECHARTVIEW_HXX

#include "persalys/PersalysPrivate.hxx"

#include <openturns/PointWithDescription.hxx>

#include <QAbstractItemView>
#include <QPen>
#include <QMouseEvent>
#include <QRubberBand>
#include <QPainter>

namespace PERSALYS
{
class PERSALYS_PLOT_API PieChartView: public QAbstractItemView
{
  Q_OBJECT

public:
  explicit PieChartView(const OT::PointWithDescription& data, QWidget* parent = 0);

  void setData(const OT::PointWithDescription& data);
  void setPlotName(const QString& plotName);

  QModelIndex indexAt(const QPoint &point) const override;
  QRect visualRect(const QModelIndex &index) const override;
  void scrollTo(const QModelIndex &index, ScrollHint hint = EnsureVisible) override;

protected:
  bool isIndexHidden(const QModelIndex &index) const override;
  int horizontalOffset() const override;
  int verticalOffset() const override;

  void mousePressEvent(QMouseEvent *event) override;
  void mouseMoveEvent(QMouseEvent *event) override;
  void mouseReleaseEvent(QMouseEvent *event) override;

  QModelIndex moveCursor(QAbstractItemView::CursorAction cursorAction, Qt::KeyboardModifiers modifiers) override;

  virtual void draw(QPainter& devicePainter);
  void paintEvent(QPaintEvent *event) override;
  void resizeEvent(QResizeEvent *event) override;

  void setSelection(const QRect&, QItemSelectionModel::SelectionFlags command) override;

  QRegion visualRegionForSelection(const QItemSelection &selection) const override;

  QVector<QColor> generateSegmentsColors(const int nbColors) const;

protected slots:
  void contextMenu(const QPoint & pos);
  void exportPlot();

private:
  QRect itemRect(const QModelIndex &item) const;
  QRegion itemRegion(const QModelIndex &index) const;
  int rows(const QModelIndex &index = QModelIndex()) const;
  void updateGeometries() override;

private:
  int margin_;
  int totalSize_;
  int pieSize_;
  int validItems_;
  double totalValue_;
  QPoint origin_;
  QRubberBand *rubberBand_;
  QString plotName_;
};
}
#endif
