profileattributetrackswidget.h

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#ifndef OPENSWMMVIS_PLOT_PROFILEATTRIBUTETRACKSWIDGET_H
#define OPENSWMMVIS_PLOT_PROFILEATTRIBUTETRACKSWIDGET_H
 
#include "plot/plotattribute.h"
#include "plot/profileattributesampler.h"
 
#include <QPen>
#include <QPointer>
#include <QString>
#include <QVector>
#include <QWidget>
 
#include <functional>
#include <memory>
 
class ProfileAttributeTrackOptions;
 
class ProfileAttributeTracksWidget : public QWidget
{
    Q_OBJECT
 
public:
    struct SourceProfile
    {
        QString label;
        QColor  color;
        bool    primary = false;   
        std::shared_ptr<const ProfileAttributeSampler::AttributeProfile> data;
    };
 
    struct Track
    {
        openswmmvis::plot::PlotAttribute attribute =
            openswmmvis::plot::PlotAttribute::Unknown;
        bool    isNodeAttribute = true;
        QString title;              
        QPen    pen;                
        QVector<SourceProfile> sources;
    };
 
    explicit ProfileAttributeTracksWidget(QWidget *parent = nullptr);
 
    void setVirtualChainage(const QVector<double> &table);
 
    void setHorizontalMargins(int leftPx, int rightPx);
 
    void setRealChainageMapper(std::function<double(double)> fn);
 
    void setTracks(const QVector<Track> &tracks);
    [[nodiscard]] int trackCount() const { return m_tracks.size(); }
 
    void setOptions(ProfileAttributeTrackOptions *options);
 
    void setXLabel(const QString &label);
 
    // ── Pixel mapping (public for the alignment unit test) ─────────────
    [[nodiscard]] double pixelForVirtualX(double vx) const;
    [[nodiscard]] double virtualXForPixel(double px) const;
 
public slots:
    void setVisibleXRange(double vxMin, double vxMax);
 
    void setCurrentPeriod(int period);
 
signals:
    void visibleXRangeChanged(double vxMin, double vxMax);
 
protected:
    void paintEvent(QPaintEvent *event) override;
    void wheelEvent(QWheelEvent *event) override;
    void mousePressEvent(QMouseEvent *event) override;
    void mouseMoveEvent(QMouseEvent *event) override;
    void mouseReleaseEvent(QMouseEvent *event) override;
 
private:
    [[nodiscard]] int    preferredTrackHeight() const;
    [[nodiscard]] int    trackHeight() const;
    [[nodiscard]] int    bottomAxisHeight() const;
    [[nodiscard]] QRectF trackRect(int trackIdx) const;
    void updateSizeHint();
    void paintTrack(QPainter &p, int trackIdx) const;
    void paintBottomAxis(QPainter &p) const;
 
    struct YRange { double lo = 0.0; double hi = 1.0; };
    [[nodiscard]] YRange yRangeFor(const Track &t) const;
 
    QVector<Track>               m_tracks;
    QVector<YRange>              m_yRanges;       
    QVector<double>              m_vx;            
    std::function<double(double)> m_toRealChainage;
    QPointer<ProfileAttributeTrackOptions> m_options;
    QString                      m_xLabel;
 
    int    m_marginLeft  = 64;    
    int    m_marginRight = 16;
    double m_vxMin = 0.0;
    double m_vxMax = 1.0;
    int    m_currentPeriod = -1;
 
    bool   m_panActive = false;
    QPoint m_lastMousePos;
};
 
#endif // OPENSWMMVIS_PLOT_PROFILEATTRIBUTETRACKSWIDGET_H