Source/WebCore/page/animation/CSSPropertyAnimation.h

/*
 * Copyright (C) 2007 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. 
 * 3.  Neither the name of Apple Inc. ("Apple") nor the names of
 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS 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 APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 */

#pragma once

#include "CSSPropertyNames.h"
#include <wtf/HashSet.h>

namespace WebCore {

class CSSPropertyBlendingClient;
class RenderStyle;

class CSSPropertyAnimation {
public:
    static bool isPropertyAnimatable(CSSPropertyID);
    static bool animationOfPropertyIsAccelerated(CSSPropertyID);
    static bool propertiesEqual(CSSPropertyID, const RenderStyle* a, const RenderStyle* b);
    static bool canPropertyBeInterpolated(CSSPropertyID, const RenderStyle* a, const RenderStyle* b);
    static CSSPropertyID getPropertyAtIndex(int, Optional<bool>& isShorthand);
    static int getNumProperties();

    static HashSet<CSSPropertyID> animatableShorthandsAffectingProperty(CSSPropertyID);

    // Return true if we need to start software animation timers
    static bool blendProperties(const CSSPropertyBlendingClient*, CSSPropertyID, RenderStyle* dst, const RenderStyle* a, const RenderStyle* b, double progress);
};

} // namespace WebCore