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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 "AnimationBase.h"
     33 #include "Document.h"
     34 
     35 namespace WebCore {
     36 
     37 // An ImplicitAnimation tracks the state of a transition of a specific CSS property
     38 // for a single RenderObject.
     39 class ImplicitAnimation : public AnimationBase {
     40 public:
     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 
     74 protected:
     75     bool shouldSendEventForListener(Document::ListenerType) const;
     76     bool sendTransitionEvent(const AtomicString&, double elapsedTime);
     77 
     78     void validateTransformFunctionList();
     79 
     80 private:
     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