TComposedColorGradient.h

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// SPDX-License-Identifier: LGPL-2.1-or-later OR GPL-2.0-or-later OR GPL-3.0-or-later OR LicenseRef-ACF-Commercial
#pragma once
 
 
// Qt includes
#include <QtCore/QPair>
 
// ACF includes
#include <istd/TRange.h>
#include <icmm/TColorGradient.h>
 
 
namespace icmm
{
 
 
template <class Gradient>
class TComposedColorGradient: virtual public IColorTransformation
{
public:
       void AddGradient(const istd::CRange& intervall, const Gradient& gradient);
 
       // reimplemented (icmm::IColorTransformation)
       virtual bool GetValueAt(const Argument& argument, Result& result) const override;
       virtual Result GetValueAt(const Argument& argument) const override;
 
private:
       typedef QPair<istd::CRange, Gradient> IntervalGradient;
       typedef QVector<IntervalGradient> Gradients;
       
       Gradients m_gradients;
};
 
 
// public methods
 
template <class GradientFunction>
void TColorGradient<GradientFunction>::AddGradient(const istd::CRange& intervall, const Gradient& gradient)
{
       m_gradients.push_back(std::make_pair<istd::CRange, Gradient>(intervall, gradient));
}
 
 
// reimplemented (icmm::IColorTransformation)
 
template <class GradientFunction>
bool TColorGradient<GradientFunction>::GetValueAt(const Argument& argument, Result& result) const
{
       for (int gradientIndex = 0; gradientIndex < int(m_gradients.size()); gradientIndex++){
              IntervalGradient gradient = m_gradients[gradientIndex];
 
              if (gradient.first.Contains(argument)){
                     return gradient.second.GetValueAt(argument, result);
              }
       }
       
       return false;
}
 
 
template <class GradientFunction>
TColorGradient<GradientFunction>::Result TColorGradient<GradientFunction>::GetValueAt(const Argument& argument) const
{
       ResultType result;
 
       GetValueAt(argument, result);
 
       return result;
}
 
 
typedef TComposedColorGradient<CLinearGradient> CComposedLinearGradient;
 
 
} // namespace icmm