ddtColourmapWidget.hpp

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#ifndef DDT_DATAVISUALISATION_DDTWIDGETS_COLOURMAPWIDGET_HPP
#define DDT_DATAVISUALISATION_DDTWIDGETS_COLOURMAPWIDGET_HPP
 
#include <QtUiPlugin/QDesignerExportWidget>
 
#include "ddt/imageHandling.hpp"
#include "ddt/widgets/ddtWidget.hpp"

class QDESIGNER_WIDGET_EXPORT DdtColourmapWidget : public DdtWidget {
  Q_OBJECT
 
 public:
  explicit DdtColourmapWidget(QWidget* parent = nullptr);

  virtual ~DdtColourmapWidget();
 
  void mousePressEvent(QMouseEvent* event) final;
  void mouseMoveEvent(QMouseEvent* event) final;
  void mouseReleaseEvent(QMouseEvent* event) final;
 
 signals:
  void ChangeContrast(ddt::colorMap_t colourmap,
                      ddt::colorMap_t colourmap_inverted,
                      ddt::colorMapARGB_t colourmap_argb,
                      ddt::colorMapARGB_t colourmap_argb_inverted);

  void RestoreColourmap();
 
 private:
  QLabel* colourbar_label;
  QLabel* colourscale_label;
  QVector<QRgb> orig_colourmap;
  QVector<QRgb> current_colourmap;
  int colourbar_clicked_pos_x;
  const int MAX_COLOR_MAP_ENTRIES = 256;
  const int MAX_COLOR_MAP_VALUE = 255;
  const int PIXMAP_HEIGHT = 20;
  int amount;
  std::atomic<bool> inverted;
 
  void CreateWidget();

  void ConvertCurrentMap(ddt::colorMap_t& colourmap,
                         ddt::colorMap_t& colourmap_inverted,
                         ddt::colorMapARGB_t& colourmap_argb,
                         ddt::colorMapARGB_t& colourmap_argb_inverted);

  void ConvertAndEmit();

  void ShiftColourmap();

  void RotateColourmap();

  void ScaleColourmap();

  void UpdateColourmap(QVector<QRgb> colourmap);

  void ResetColourmap();
 
  int GetPosX(const QPoint pos) const;
 
  void UpdateColourscale(double min_value, double max_value,
                         int scaling_function);
  void DrawScale(double min_value, double max_value, QPainter& painter,
                 int scaling_function);
  void DrawScaleLog(double min_value, double max_value, QPainter& painter);
  int CalculateTickPositionLinear(double tick, double min_value, double width,
                                  double maxsize);
  int CalculateTickPositionSqrt(double tick, double min_value, double width,
                                double maxsize);
 
#if QT_VERSION_MAJOR==5
  void enterEvent(QEvent* const event) override;
#else
  void enterEvent(QEnterEvent* const event) override;
#endif
 
  void leaveEvent(QEvent* const event) override;
 
 protected slots:
  void SetCurrentColourmap(QVector<QRgb> colourmap);

  void UpdateColourbarAxis(double min_value, double max_value,
                           int scaling_function);

  void Reset();

  void InvertColourmap(const bool invert);
};
 
#endif  // DDT_DATAVISUALISATION_DDTWIDGETS_COLOURMAPWIDGET_HPP