functor_colormixer.h

// Description: FunctorColorMixer class
// Detail: Combines background and texture using the supplied functor
// Documentation: colormixers.txt

#ifndef PASTELGFX_FUNCTOR_COLORMIXER_H
#define PASTELGFX_FUNCTOR_COLORMIXER_H

#include "pastel/gfx/color/colormixer.h"

#include "pastel/sys/mytypes.h"

namespace Pastel
{

    template <typename Type, typename Functor>
    class FunctorColorMixer
        : public ColorMixer<Type>
    {
    public:
        explicit FunctorColorMixer(
            const Functor& functor)
            : functor_(functor)
        {
        }

        virtual ~FunctorColorMixer()
        {
        }

        virtual Type operator()(
            const Type& background,
            const Type& texture) const
        {
            return functor_(background, texture);
        }

    private:
        Functor functor_;
    };

    template <typename Type, typename Functor>

    FunctorColorMixer<Type, Functor> functorColorMixer(const Functor& functor)
    {
        return FunctorColorMixer<Type, Functor>(functor);
    }

}

#endif