/* This file is part of the KDE project
 * Copyright (c) 2009 Jan Hambrecht <jaham@gmx.net>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#ifndef COMPOSITEEFFECT_H
#define COMPOSITEEFFECT_H

#include "KoFilterEffect.h"

#define CompositeEffectId "feComposite"

/// A flood fill effect
class CompositeEffect : public KoFilterEffect
{
public:
    enum Operation {
        CompositeOver,
        CompositeIn,
        CompositeOut,
        CompositeAtop,
        CompositeXor,
        Arithmetic
    };

    CompositeEffect();

    /// Returns the composite operation
    Operation operation() const;

    /// Sets the composite operation
    void setOperation(Operation op);

    /// Returns the arithmetic values
    const qreal * arithmeticValues() const;

    /// Sets the arithmetic values
    void setArithmeticValues(qreal * values);

    /// reimplemented from KoFilterEffect
    QImage processImage(const QImage &image, const KoFilterEffectRenderContext &context) const override;
    /// reimplemented from KoFilterEffect
    QImage processImages(const QVector<QImage> &images, const KoFilterEffectRenderContext &context) const override;
    /// reimplemented from KoFilterEffect
    bool load(const KoXmlElement &element, const KoFilterEffectLoadingContext &context) override;
    /// reimplemented from KoFilterEffect
    void save(KoXmlWriter &writer) override;

private:
    Operation m_operation;
    qreal m_k[4];
};

#endif // COMPOSITEEFFECT_H
