NormalizeSizeOperator.hpp

#ifndef NORMALIZESIZEOPERATOR_HPP
#define NORMALIZESIZEOPERATOR_HPP

#include "Export.hpp"

#include <MultiWidgets/Operator.hpp>
#include <MultiWidgets/Widget.hpp>

#include <Valuable/AttributeEnum.hpp>

namespace Showcase {

  class SHOWCASE_API NormalizeSizeOperator : public MultiWidgets::Operator
  {
  public:
    enum class NormalizeMode {
      DEFAULT,
      KEEP_HEIGHT,  // offset scaling's effect on height
      KEEP_WIDTH,   // offset scaling's effect on width
      KEEP_BOTH     // offset scaling's effect on height and width
    };

    NormalizeSizeOperator();
    virtual ~NormalizeSizeOperator();

    virtual void update(MultiWidgets::Widget & w, const MultiWidgets::FrameInfo &) OVERRIDE;

    float estimateScale(MultiWidgets::WidgetPtr w);

    NormalizeMode normalizeMode() const { return m_normalizeMode; }
    void setNormalizeMode(NormalizeMode normalizeMode) { m_normalizeMode = normalizeMode; }

  private:
    Valuable::AttributeFloat m_minScale;
    Valuable::AttributeFloat m_maxScale;
    Valuable::AttributeT<NormalizeMode> m_normalizeMode;
  };

} // namespace Showcase

#endif // NORMALIZESIZEOPERATOR_HPP