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 ImplicitAnimation_h
30#define ImplicitAnimation_h
31
32#include "AnimationBase.h"
33#include "CSSPropertyNames.h"
34#include "Document.h"
35
36namespace WebCore {
37
38class RenderElement;
39
40// An ImplicitAnimation tracks the state of a transition of a specific CSS property
41// for a single RenderElement.
42class ImplicitAnimation : public AnimationBase {
43public:
44    static PassRefPtr<ImplicitAnimation> create(const Animation& animation, CSSPropertyID animatingProperty, RenderElement* renderer, CompositeAnimation* compositeAnimation, RenderStyle* fromStyle)
45    {
46        return adoptRef(new ImplicitAnimation(animation, animatingProperty, renderer, compositeAnimation, fromStyle));
47    };
48
49    CSSPropertyID transitionProperty() const { return m_transitionProperty; }
50    CSSPropertyID animatingProperty() const { return m_animatingProperty; }
51
52    virtual void onAnimationEnd(double elapsedTime) override;
53    virtual bool startAnimation(double timeOffset) override;
54    virtual void pauseAnimation(double timeOffset) override;
55    virtual void endAnimation() override;
56
57    virtual void animate(CompositeAnimation*, RenderElement*, const RenderStyle* currentStyle, RenderStyle* targetStyle, RefPtr<RenderStyle>& animatedStyle) override;
58    virtual void getAnimatedStyle(RefPtr<RenderStyle>& animatedStyle) override;
59    virtual void reset(RenderStyle* to);
60
61    void setOverridden(bool);
62    virtual bool overridden() const override { return m_overridden; }
63
64    virtual bool affectsProperty(CSSPropertyID) const override;
65
66    bool hasStyle() const { return m_fromStyle && m_toStyle; }
67
68    bool isTargetPropertyEqual(CSSPropertyID, const RenderStyle*);
69
70    void blendPropertyValueInStyle(CSSPropertyID, RenderStyle*);
71
72    virtual double timeToNextService() override;
73
74    bool active() const { return m_active; }
75    void setActive(bool b) { m_active = b; }
76
77protected:
78    bool shouldSendEventForListener(Document::ListenerType) const;
79    bool sendTransitionEvent(const AtomicString&, double elapsedTime);
80
81    void validateTransformFunctionList();
82#if ENABLE(CSS_FILTERS)
83    void checkForMatchingFilterFunctionLists();
84#endif
85
86private:
87    ImplicitAnimation(const Animation&, CSSPropertyID, RenderElement*, CompositeAnimation*, RenderStyle*);
88    virtual ~ImplicitAnimation();
89
90    CSSPropertyID m_transitionProperty; // Transition property as specified in the RenderStyle.
91    CSSPropertyID m_animatingProperty; // Specific property for this ImplicitAnimation
92    bool m_overridden;          // true when there is a keyframe animation that overrides the transitioning property
93    bool m_active;              // used for culling the list of transitions
94
95    // The two styles that we are blending.
96    RefPtr<RenderStyle> m_fromStyle;
97    RefPtr<RenderStyle> m_toStyle;
98};
99
100} // namespace WebCore
101
102#endif // ImplicitAnimation_h
103