multibandcolorrenderer.h

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#ifndef OPENSWMM_RENDER_MULTIBANDCOLORRENDERER_H
#define OPENSWMM_RENDER_MULTIBANDCOLORRENDERER_H
 
#include "render/irasterrenderer.h"
 
namespace OpenSWMM::Render
{
 
class MultiBandColorRenderer final : public IRasterRenderer
{
public:
    MultiBandColorRenderer() = default;
    MultiBandColorRenderer(int red, int green, int blue, int alpha = 0);
    ~MultiBandColorRenderer() override = default;
 
    [[nodiscard]] int redBand()   const { return m_red; }
    [[nodiscard]] int greenBand() const { return m_green; }
    [[nodiscard]] int blueBand()  const { return m_blue; }
    [[nodiscard]] int alphaBand() const { return m_alpha; }   
    void setBands(int red, int green, int blue, int alpha = 0);
 
    // IRasterRenderer.
    [[nodiscard]] QString rendererId() const override
    {
        return QStringLiteral("multibandcolor");
    }
    [[nodiscard]] QColor colorForValue(double value,
                                       bool isNoData = false) const override;
    [[nodiscard]] QList<LegendSymbolItem> legendSymbolItems() const override;
    [[nodiscard]] QJsonObject toJson() const override;
    void fromJson(const QJsonObject &j) override;
    [[nodiscard]] std::unique_ptr<IRasterRenderer> clone() const override;
 
private:
    int m_red   = 1;
    int m_green = 2;
    int m_blue  = 3;
    int m_alpha = 0;
};
 
} // namespace OpenSWMM::Render
 
#endif // OPENSWMM_RENDER_MULTIBANDCOLORRENDERER_H