1/*
2 * Copyright (C) 2007 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 * 3.  Neither the name of Apple Inc. ("Apple") nor the names of
14 *     its contributors may be used to endorse or promote products derived
15 *     from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifndef CSSPropertyAnimation_h
30#define CSSPropertyAnimation_h
31
32#include "CSSPropertyNames.h"
33#include "RenderStyleConstants.h"
34#include <wtf/HashSet.h>
35
36namespace WebCore {
37
38class AnimationBase;
39class RenderStyle;
40
41class CSSPropertyAnimation {
42public:
43    static bool animationOfPropertyIsAccelerated(CSSPropertyID);
44    static bool propertiesEqual(CSSPropertyID, const RenderStyle* a, const RenderStyle* b);
45    static CSSPropertyID getPropertyAtIndex(int, bool& isShorthand);
46    static int getNumProperties();
47
48    static HashSet<CSSPropertyID> animatableShorthandsAffectingProperty(CSSPropertyID);
49
50    // Return true if we need to start software animation timers
51    static bool blendProperties(const AnimationBase*, CSSPropertyID, RenderStyle* dst, const RenderStyle* a, const RenderStyle* b, double progress);
52};
53
54} // namespace WebCore
55
56#endif // CSSPropertyAnimation_h
57