KoColorSpaceBlendingPolicy.h

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/*
 *  SPDX-FileCopyrightText: 2023 Dmitry Kazakov <dimula73@gmail.com>
 *
 *  SPDX-License-Identifier: GPL-2.0-or-later
 */
#ifndef KOCOLORSPACEBLENDINGPOLICY_H
#define KOCOLORSPACEBLENDINGPOLICY_H
 
#include <kritapigment_export.h>
 
#include <KisQStringListFwd.h>
 
template<typename Traits>
struct KoAdditiveBlendingPolicy
{
    using channels_type = typename Traits::channels_type;
    inline static channels_type toAdditiveSpace(channels_type value) {
        return value;
    }
 
    inline static channels_type fromAdditiveSpace(channels_type value) {
        return value;
    }
};
 
template<typename Traits>
struct KoSubtractiveBlendingPolicy
{
    using channels_type = typename Traits::channels_type;
 
    inline static channels_type toAdditiveSpace(channels_type value) {
        return Traits::math_trait::unitValue - value;
    }
 
    inline static channels_type fromAdditiveSpace(channels_type value) {
        return Traits::math_trait::unitValue - value;
    }
};
 
KRITAPIGMENT_EXPORT
bool useSubtractiveBlendingForCmykColorSpaces();
 
KRITAPIGMENT_EXPORT
QStringList subtractiveBlendingModesInCmyk();
 
#endif // KOCOLORSPACEBLENDINGPOLICY_H