Source/WebCore/svg/properties/SVGAnimationFunction.h

/*
 * Copyright (C) 2018-2019 Apple Inc.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#pragma once

#include "SVGAttributeAnimator.h"

namespace WebCore {

class SVGElement;

class SVGAnimationFunction {
public:
    virtual ~SVGAnimationFunction() = default;

    virtual bool isDiscrete() const { return false; }

    virtual void setFromAndToValues(SVGElement* targetElement, const String&, const String&) = 0;
    virtual void setFromAndByValues(SVGElement* targetElement, const String&, const String&) = 0;
    virtual void setToAtEndOfDurationValue(const String&) = 0;

    virtual Optional<float> calculateDistance(SVGElement*, const String&, const String&) const { return { }; }
protected:
    SVGAnimationFunction(AnimationMode animationMode)
        : m_animationMode(animationMode)
    {
    }

    virtual void addFromAndToValues(SVGElement*) { }

    AnimationMode m_animationMode;
};

}