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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 CompositeAnimation_h
     30 #define CompositeAnimation_h
     31 
     32 #include "AtomicString.h"
     33 
     34 #include "ImplicitAnimation.h"
     35 #include "KeyframeAnimation.h"
     36 #include <wtf/HashMap.h>
     37 #include <wtf/Noncopyable.h>
     38 
     39 namespace WebCore {
     40 
     41 class AnimationControllerPrivate;
     42 class AnimationController;
     43 class RenderObject;
     44 class RenderStyle;
     45 
     46 // A CompositeAnimation represents a collection of animations that are running
     47 // on a single RenderObject, such as a number of properties transitioning at once.
     48 class CompositeAnimation : public RefCounted<CompositeAnimation> {
     49 public:
     50     static PassRefPtr<CompositeAnimation> create(AnimationControllerPrivate* animationController)
     51     {
     52         return adoptRef(new CompositeAnimation(animationController));
     53     };
     54 
     55     ~CompositeAnimation();
     56 
     57     void clearRenderer();
     58 
     59     PassRefPtr<RenderStyle> animate(RenderObject*, RenderStyle* currentStyle, RenderStyle* targetStyle);
     60     PassRefPtr<RenderStyle> getAnimatedStyle() const;
     61 
     62     double timeToNextService() const;
     63 
     64     AnimationControllerPrivate* animationController() const { return m_animationController; }
     65 
     66     void suspendAnimations();
     67     void resumeAnimations();
     68     bool isSuspended() const { return m_isSuspended; }
     69 
     70     bool hasAnimations() const  { return !m_transitions.isEmpty() || !m_keyframeAnimations.isEmpty(); }
     71 
     72     void setAnimating(bool);
     73     bool isAnimatingProperty(int property, bool isRunningNow) const;
     74 
     75     PassRefPtr<KeyframeAnimation> getAnimationForProperty(int property) const;
     76 
     77     void overrideImplicitAnimations(int property);
     78     void resumeOverriddenImplicitAnimations(int property);
     79 
     80     bool pauseAnimationAtTime(const AtomicString& name, double t);
     81     bool pauseTransitionAtTime(int property, double t);
     82     unsigned numberOfActiveAnimations() const;
     83 
     84 private:
     85     CompositeAnimation(AnimationControllerPrivate* animationController)
     86         : m_animationController(animationController)
     87         , m_numStyleAvailableWaiters(0)
     88         , m_isSuspended(false)
     89     {
     90     }
     91 
     92     void updateTransitions(RenderObject*, RenderStyle* currentStyle, RenderStyle* targetStyle);
     93     void updateKeyframeAnimations(RenderObject*, RenderStyle* currentStyle, RenderStyle* targetStyle);
     94 
     95     typedef HashMap<int, RefPtr<ImplicitAnimation> > CSSPropertyTransitionsMap;
     96     typedef HashMap<AtomicStringImpl*, RefPtr<KeyframeAnimation> >  AnimationNameMap;
     97 
     98     AnimationControllerPrivate* m_animationController;
     99     CSSPropertyTransitionsMap m_transitions;
    100     AnimationNameMap m_keyframeAnimations;
    101     Vector<AtomicStringImpl*> m_keyframeAnimationOrderMap;
    102     unsigned m_numStyleAvailableWaiters;
    103     bool m_isSuspended;
    104 };
    105 
    106 } // namespace WebCore
    107 
    108 #endif // CompositeAnimation_h
    109