terraintoolbar.h

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#ifndef TERRAINTOOLBAR_H
#define TERRAINTOOLBAR_H
 
#include <QPointer>
#include <QToolBar>
 
class GISRasterLayer;
class MapCanvas;
class OpenSWMMVisLayer;
class QAction;
class QComboBox;
class QDoubleSpinBox;
class QLabel;
 
class TerrainToolbar : public QToolBar
{
    Q_OBJECT
 
public:
    explicit TerrainToolbar(const QString &title, QWidget *parent = nullptr);
 
    [[nodiscard]] GISRasterLayer *activeTerrain() const;
 
    [[nodiscard]] double nodeOffset() const;
 
    [[nodiscard]] double linkOffset() const;
 
    [[nodiscard]] QString verticalUnit() const;
 
    [[nodiscard]] double verticalToModelFactor() const;
 
    void rebindCanvas(MapCanvas *canvas);
 
    void restoreState(const QString &terrainLayerPath,
                      double nodeOff,
                      double linkOff,
                      const QString &vertUnit = QString());
 
    void addProfileAction(QAction *action);
 
signals:
    void activeTerrainChanged(GISRasterLayer *layer);
 
    void nodeOffsetChanged(double offset);
 
    void linkOffsetChanged(double offset);
 
    void verticalUnitChanged(const QString &unit);
 
private slots:
    void onLayerAdded(OpenSWMMVisLayer *layer);
    void onLayerRemoved(OpenSWMMVisLayer *layer);
    void onComboIndexChanged(int index);
 
private:
    void rebuildCombo();
    void updateUnitLabels();
    void autoDetectVerticalUnit();
 
    QComboBox      *m_terrainCombo       = nullptr;
    QComboBox      *m_verticalUnitCombo  = nullptr;
    QLabel         *m_conversionLabel    = nullptr; // "m → ft" unit arrow
    QDoubleSpinBox *m_factorSpin         = nullptr; // user-editable conversion factor
    QDoubleSpinBox *m_nodeOffsetSpin     = nullptr;
    QDoubleSpinBox *m_linkOffsetSpin     = nullptr;
    QLabel         *m_nodeUnitLabel      = nullptr;
    QLabel         *m_linkUnitLabel      = nullptr;
    QToolBar       *m_profileBar         = nullptr; // mini bar in the Profile group
    QPointer<MapCanvas> m_canvas;                   // canvas dies with its project window; we outlive it
    bool            m_userChoseNone      = false;   // deliberate "(none)" pick
};
 
#endif // TERRAINTOOLBAR_H