/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
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 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "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 THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 */

#include "config.h"
#include "core/animation/AnimatableClipPathOperation.h"

namespace WebCore {

PassRefPtr<AnimatableValue> AnimatableClipPathOperation::interpolateTo(const AnimatableValue* value, double fraction) const
{
    const AnimatableClipPathOperation* toOperation = toAnimatableClipPathOperation(value);

    if (m_operation->getOperationType() != ClipPathOperation::SHAPE || toOperation->m_operation->getOperationType() != ClipPathOperation::SHAPE)
        return defaultInterpolateTo(this, value, fraction);

    const BasicShape* fromShape = static_cast<ShapeClipPathOperation*>(clipPathOperation())->basicShape();
    const BasicShape* toShape = static_cast<ShapeClipPathOperation*>(toOperation->clipPathOperation())->basicShape();

    if (!fromShape->canBlend(toShape))
        return defaultInterpolateTo(this, value, fraction);

    return AnimatableClipPathOperation::create(ShapeClipPathOperation::create(toShape->blend(fromShape, fraction)).get());
}

bool AnimatableClipPathOperation::equalTo(const AnimatableValue* value) const
{
    const ClipPathOperation* operation = toAnimatableClipPathOperation(value)->m_operation.get();
    return m_operation == operation || (m_operation && operation && *m_operation == *operation);
}

}