singlesymbolrenderer.h

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#ifndef OPENSWMM_RENDER_SINGLESYMBOLRENDERER_H
#define OPENSWMM_RENDER_SINGLESYMBOLRENDERER_H
 
#include "render/datadefined.h"
#include "render/ifeaturerenderer.h"
 
namespace OpenSWMM::Render
{
 
class SingleSymbolRenderer final : public IFeatureRenderer
{
public:
    SingleSymbolRenderer() = default;
    explicit SingleSymbolRenderer(SymbolStyle symbol, QString label = {});
    ~SingleSymbolRenderer() override = default;
 
    [[nodiscard]] const SymbolStyle &symbol() const { return m_symbol; }
    void setSymbol(SymbolStyle s);
 
    [[nodiscard]] const QString &legendLabel() const { return m_legendLabel; }
    void setLegendLabel(QString label) { m_legendLabel = std::move(label); }
 
    [[nodiscard]] const DataDefinedScalar &sizeData() const { return m_sizeData; }
    void setSizeData(DataDefinedScalar d) { m_sizeData = std::move(d); }
 
    // IFeatureRenderer.
    [[nodiscard]] QString rendererId() const override { return QStringLiteral("single"); }
    [[nodiscard]] SymbolStyle symbolFor(const FeatureRef &f,
                                        const QVariantMap &attrs) const override;
    [[nodiscard]] QList<LegendSymbolItem> legendSymbolItems() const override;
    [[nodiscard]] QJsonObject toJson() const override;
    void fromJson(const QJsonObject &j) override;
    [[nodiscard]] std::unique_ptr<IFeatureRenderer> clone() const override;
 
    // ── Per-class editing (Slice BB Phase 8.6.16) ──────────────────────
    // Only one class ("single"). All four kinds mutate the stored m_symbol
    // directly — there is no override hash because there is only one row.
    [[nodiscard]] bool supportsClassEdit(ClassEditKind /*kind*/) const override { return true; }
    [[nodiscard]] QColor colorForClass(const QString &classKey) const override;
    [[nodiscard]] qreal  sizeForClass(const QString &classKey) const override;
    void setColorForClass(const QString &classKey, const QColor &color) override;
    void setSizeForClass(const QString &classKey, qreal size) override;
    void setWidthForClass(const QString &classKey, qreal width) override;
    void setSymbolForClass(const QString &classKey, const SymbolStyle &style) override;
 
private:
    SymbolStyle       m_symbol;
    QString           m_legendLabel;
    DataDefinedScalar m_sizeData;   
};
 
} // namespace OpenSWMM::Render
 
#endif // OPENSWMM_RENDER_SINGLESYMBOLRENDERER_H