profilepathoverlay.h

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#ifndef PROFILE_PATH_OVERLAY_H
#define PROFILE_PATH_OVERLAY_H
 
#include "plot/profilerouter.h"
 
#include <QColor>
#include <QGraphicsItemGroup>
#include <QPointF>
#include <QVector>
#include <functional>
 
class SWMMModelLayer;
class QPainter;
 
class ProfilePathOverlay : public QGraphicsItemGroup
{
public:
    explicit ProfilePathOverlay(SWMMModelLayer *model,
                                QGraphicsItem *parent = nullptr);
 
    void setPaths(const QVector<ProfileRouter::Path> &paths);
 
    void setHighlightedPath(int index);
 
    void setEndpoints(int startEngineNodeIdx, int endEngineNodeIdx);
 
    void clear();
 
    [[nodiscard]] int pathCount() const;
 
    [[nodiscard]] QColor colorForPath(int index) const;
 
    using SceneToPixel = std::function<QPointF(const QPointF &)>;
 
    void paintOverlay(QPainter &p, const SceneToPixel &toPixel) const;
 
private:
    void rebuild();
    void applyHighlightStyling();
 
    [[nodiscard]] QVector<QPointF> sceneCoordsForLink(int engineLinkIdx) const;
    [[nodiscard]] QPointF          sceneCoordForNode(int engineNodeIdx) const;
 
    SWMMModelLayer                   *m_model       = nullptr;
    QVector<ProfileRouter::Path>      m_paths;
    QVector<QGraphicsPathItem *>      m_pathItems;
    QGraphicsEllipseItem             *m_startHalo  = nullptr;
    QGraphicsEllipseItem             *m_endHalo    = nullptr;
    int                               m_highlighted = -1;
    int                               m_startEngineNodeIdx = -1;
    int                               m_endEngineNodeIdx   = -1;
};
 
#endif // PROFILE_PATH_OVERLAY_H