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