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 Computer, 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 ImplicitAnimation_h
30#define ImplicitAnimation_h
31
32#include "AnimationBase.h"
33#include "Document.h"
34
35namespace WebCore {
36
37// An ImplicitAnimation tracks the state of a transition of a specific CSS property
38// for a single RenderObject.
39class ImplicitAnimation : public AnimationBase {
40public:
41    static PassRefPtr<ImplicitAnimation> create(const Animation* animation, int animatingProperty, RenderObject* renderer, CompositeAnimation* compositeAnimation, RenderStyle* fromStyle)
42    {
43        return adoptRef(new ImplicitAnimation(animation, animatingProperty, renderer, compositeAnimation, fromStyle));
44    };
45
46    int transitionProperty() const { return m_transitionProperty; }
47    int animatingProperty() const { return m_animatingProperty; }
48
49    virtual void onAnimationEnd(double elapsedTime);
50    virtual bool startAnimation(double timeOffset);
51    virtual void pauseAnimation(double /*timeOffset*/);
52    virtual void endAnimation();
53
54    virtual void animate(CompositeAnimation*, RenderObject*, const RenderStyle* currentStyle, RenderStyle* targetStyle, RefPtr<RenderStyle>& animatedStyle);
55    virtual void getAnimatedStyle(RefPtr<RenderStyle>& animatedStyle);
56    virtual void reset(RenderStyle* to);
57
58    void setOverridden(bool);
59    virtual bool overridden() const { return m_overridden; }
60
61    virtual bool affectsProperty(int) const;
62
63    bool hasStyle() const { return m_fromStyle && m_toStyle; }
64
65    bool isTargetPropertyEqual(int, const RenderStyle* targetStyle);
66
67    void blendPropertyValueInStyle(int, RenderStyle* currentStyle);
68
69    virtual double timeToNextService();
70
71    bool active() const { return m_active; }
72    void setActive(bool b) { m_active = b; }
73
74protected:
75    bool shouldSendEventForListener(Document::ListenerType) const;
76    bool sendTransitionEvent(const AtomicString&, double elapsedTime);
77
78    void validateTransformFunctionList();
79
80private:
81    ImplicitAnimation(const Animation*, int animatingProperty, RenderObject*, CompositeAnimation*, RenderStyle* fromStyle);
82    virtual ~ImplicitAnimation();
83
84    int m_transitionProperty;   // Transition property as specified in the RenderStyle. May be cAnimateAll
85    int m_animatingProperty;    // Specific property for this ImplicitAnimation
86    bool m_overridden;          // true when there is a keyframe animation that overrides the transitioning property
87    bool m_active;              // used for culling the list of transitions
88
89    // The two styles that we are blending.
90    RefPtr<RenderStyle> m_fromStyle;
91    RefPtr<RenderStyle> m_toStyle;
92};
93
94} // namespace WebCore
95
96#endif // ImplicitAnimation_h
97