PaletteInterface.h

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#pragma once
#include <misc/gen/PropertySheetDialog.h>
#include <misc/gen/TClassRegistration.h>
#include <misc/gen/TClosure.h>
#include <misc/gen/Value.h>
#include <misc/qt/Persistent.h>
#include <pal/iface/ColorTable.h>
#include <pal/iface/global.h>
#include <utility>
 
namespace sf
{

class _PAL_CLASS PaletteInterface
  : public QObject
  , public Persistent
{
    Q_OBJECT
 
  public:
    struct Parameters
    {
        typedef TClosure<void> Callback;
 
        explicit Parameters(const Callback& callback, QObject* parent = nullptr)
          : _parent(parent)
          , _callback(callback)
        {}
 
        QObject* _parent{};
        Callback _callback;
    };

    explicit PaletteInterface(const Parameters&);

    ~PaletteInterface() override = default;

    virtual void addPropertyPages(PropertySheetDialog* sheet);

    virtual void setSizes(qsizetype colorsUsed, qsizetype colorsSize);

    [[nodiscard]] virtual ColorTable getColorTable() const = 0;

    [[nodiscard]] virtual qreal getCurveLevel(qreal x) const = 0;
 
  protected:
    Parameters::Callback _callback;
    qsizetype _colorsSize{256};
    qsizetype _colorsUsed{_colorsSize};
 
    // Declarations of static functions and data members to be able to create registered implementations.
    SF_DECL_IFACE(PaletteInterface, PaletteInterface::Parameters, Interface)
};
 
}// namespace sf