meshprofileplotwidget.h

Go to the documentation of this file.

 
#ifndef MESH_PROFILE_PLOT_WIDGET_H
#define MESH_PROFILE_PLOT_WIDGET_H
 
#include "plot/meshprofileplotoptions.h"
#include "plot/meshprofilesampler.h"
 
#include <QDateTime>
#include <QPointer>
#include <QString>
#include <QVector>
#include <QWidget>
 
class QRubberBand;
 
class MeshProfilePlotWidget : public QWidget
{
    Q_OBJECT
public:
    explicit MeshProfilePlotWidget(QWidget *parent = nullptr);
 
    void setProfile(const MeshProfileSampler::MeshProfile &profile);
 
    void setCurrentDepths(const QVector<double> &depthNow,
                          const QVector<bool> &cellHasSurface = {});
 
    void setOptions(MeshProfilePlotOptions *options);
    [[nodiscard]] MeshProfilePlotOptions *options() const { return m_options; }
 
    void setCurrentDateTime(const QDateTime &dt);
 
    void setAxisLabels(const QString &xLabel, const QString &yLabel);
 
    // ── Position cursor (chart ↔ map sync) ──────────────────────────────
    void setCursorChainage(double chainage);
    [[nodiscard]] bool   hasCursor()      const { return m_hasCursor; }
    [[nodiscard]] double cursorChainage() const { return m_cursorChainage; }
 
    // ── Zoom / pan (driven by the dialog toolbar) ───────────────────────
    enum class Mode { Identify = 0, Pan, ZoomIn, ZoomOut };
    enum class AxisEdge {
        None = 0,
        XMinimum,
        XMaximum,
        YMinimum,
        YMaximum,
    };
    Q_ENUM(AxisEdge)
 
    void setMode(Mode m);
    [[nodiscard]] Mode mode() const { return m_mode; }
    [[nodiscard]] AxisEdge axisEdgeAt(const QPoint &widgetPos) const;
    bool setAxisEdgeValue(AxisEdge edge, double value);
    [[nodiscard]] QRectF visibleDataRange() const;
    void zoomBy(double factor);
    void fitToExtent();
 
signals:
    void cursorChainageChanged(double chainage);
 
protected:
    void paintEvent(QPaintEvent *event) override;
    void resizeEvent(QResizeEvent *event) override;
    void mousePressEvent(QMouseEvent *event) override;
    void mouseMoveEvent(QMouseEvent *event) override;
    void mouseReleaseEvent(QMouseEvent *event) override;
    void wheelEvent(QWheelEvent *event) override;
 
private:
    [[nodiscard]] QRectF  plotRect() const;
    [[nodiscard]] QPointF dataToPixel(double chainage, double elev) const;
    [[nodiscard]] double  pixelToChainage(double px) const;
    [[nodiscard]] bool sampleAtChainage(double chain, double &ground, double &wse) const;
    void recomputeBounds();
    bool editAxisEdge(AxisEdge edge);
 
    void paintBackgroundAndAxes(QPainter &p) const;
    void paintSoilFill(QPainter &p) const;
    void paintMaxEnvelope(QPainter &p) const;
    void paintDepthFill(QPainter &p) const;
    void paintWseLine(QPainter &p) const;
    void paintGroundLine(QPainter &p) const;
    void paintCellBoundaryDots(QPainter &p) const;
    void paintCursor(QPainter &p) const;
    void paintLegend(QPainter &p) const;
    void paintTimeLabel(QPainter &p) const;
 
    MeshProfileSampler::MeshProfile      m_profile;
    QPointer<MeshProfilePlotOptions>     m_options;
    QDateTime                            m_currentDateTime;
    QString                              m_xLabel = QStringLiteral("Distance");
    QString                              m_yLabel = QStringLiteral("Elevation");
 
    // Auto extent (data bounds) + current view bounds.
    double m_autoXMin = 0.0, m_autoXMax = 1.0, m_autoYMin = 0.0, m_autoYMax = 1.0;
    double m_dataXMin = 0.0, m_dataXMax = 1.0, m_dataYMin = 0.0, m_dataYMax = 1.0;
    bool   m_fitMode  = true;
 
    Mode   m_mode        = Mode::Identify;
    bool   m_panActive   = false;
    bool   m_zoomActive  = false;
    AxisEdge m_pressedAxisEdge = AxisEdge::None;
    QPoint m_lastMousePos;
    QPoint m_zoomAnchor;
    QRubberBand *m_rubberBand = nullptr;
 
    // Last-painted overlay rects (drag hit-test).
    mutable QRectF m_legendRect;
    mutable QRectF m_timeLabelRect;
    enum class OverlayDrag { None = 0, Legend, TimeLabel };
    OverlayDrag m_overlayDrag = OverlayDrag::None;
    QPoint      m_overlayDragLastPos;
 
    // Position cursor (a draggable vertical line synced with the map arrow).
    bool   m_hasCursor      = false;
    double m_cursorChainage = 0.0;
    bool   m_cursorDragging = false;
};
 
#endif // MESH_PROFILE_PLOT_WIDGET_H