patterneditchartview.h

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#ifndef OPENSWMMVIS_UI_WIDGETS_PATTERNEDITCHARTVIEW_H
#define OPENSWMMVIS_UI_WIDGETS_PATTERNEDITCHARTVIEW_H
 
#include "ui/widgets/interactivechartview.h"
 
#include <QPoint>
#include <QPointer>
#include <QVector>
 
class QChart;
class QLineSeries;
class QScatterSeries;
class QRubberBand;
class QUndoStack;
 
namespace openswmmvis::pattern {
class PatternProvider;
}
 
namespace openswmmvis::ui {
 
class PatternEditChartView : public InteractiveChartView
{
    Q_OBJECT
 
public:
    enum class EditMode {
        None,           
        EditPoints,     
    };
    Q_ENUM(EditMode)
 
    
    PatternEditChartView(QChart *chart,
                         QLineSeries *referenceSeries,
                         QWidget *parent = nullptr);
    ~PatternEditChartView() override;
 
    // ── MVC binding ─────────────────────────────────────────────────────────
 
    openswmmvis::pattern::PatternProvider *provider() const noexcept;
    void setProvider(openswmmvis::pattern::PatternProvider *p);
 
    void setUndoStack(QUndoStack *stack);
    QUndoStack *undoStack() const noexcept { return m_undoStack; }
 
    // ── Edit mode ───────────────────────────────────────────────────────────
 
    EditMode editMode() const noexcept { return m_editMode; }
    void setEditMode(EditMode m);
 
    // ── Selection ───────────────────────────────────────────────────────────
 
    QVector<int> selectedIndices() const { return m_selection; }
    void clearSelection();
    void setSelection(QVector<int> indices);
 
    // ── Testing / introspection ─────────────────────────────────────────────
 
    int hitTestSlot(const QPoint &viewportPx, int hitRadiusPx = 10) const;
 
signals:
    void selectionChanged(const QVector<int> &indices);
    void editModeChanged(EditMode m);
 
protected:
    void mousePressEvent(QMouseEvent *e) override;
    void mouseMoveEvent(QMouseEvent *e) override;
    void mouseReleaseEvent(QMouseEvent *e) override;
    void contextMenuEvent(QContextMenuEvent *e) override;
 
private slots:
    void onProviderFactorChanged_(int i);
    void onProviderFactorsChanged_();
 
private:
    void refreshSelectionOverlay_();
    QPointF viewportToValue_(const QPoint &px) const;
    double  slotCenterX_(int i) const noexcept { return double(i) + 0.5; }
 
    QPointer<openswmmvis::pattern::PatternProvider> m_provider;
    QUndoStack       *m_undoStack       = nullptr;
    QLineSeries      *m_referenceSeries = nullptr;
    QScatterSeries   *m_selectedScatter = nullptr;
 
    EditMode m_editMode = EditMode::None;
 
    // Drag state.
    bool   m_dragging         = false;
    bool   m_horizontalDrag   = false;    
    bool   m_dragAxisLocked   = false;
    QPoint m_pressPos;
    QPointF m_pressValue;
    int    m_dragSlot         = -1;       
    int    m_dragStartSlot    = -1;       
    double m_dragInitialValue = 0.0;
    QVector<int> m_swapHistory;          
 
    QVector<int> m_selection;
};
 
} // namespace openswmmvis::ui
 
#endif // OPENSWMMVIS_UI_WIDGETS_PATTERNEDITCHARTVIEW_H