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      1 /*
      2  * Copyright (C) 2009 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 AnimationControllerPrivate_h
     30 #define AnimationControllerPrivate_h
     31 
     32 #include "CSSPropertyNames.h"
     33 #include "core/platform/Timer.h"
     34 #include "wtf/HashMap.h"
     35 #include "wtf/HashSet.h"
     36 #include "wtf/PassRefPtr.h"
     37 #include "wtf/RefPtr.h"
     38 #include "wtf/Vector.h"
     39 #include "wtf/text/AtomicString.h"
     40 #include "wtf/text/WTFString.h"
     41 
     42 namespace WebCore {
     43 
     44 class AnimationBase;
     45 class CompositeAnimation;
     46 class Document;
     47 class Element;
     48 class Frame;
     49 class Node;
     50 class RenderObject;
     51 class RenderStyle;
     52 
     53 enum SetNeedsStyleRecalc {
     54     DoNotCallSetNeedsStyleRecalc = 0,
     55     CallSetNeedsStyleRecalc = 1
     56 };
     57 
     58 class AnimationControllerPrivate {
     59     WTF_MAKE_NONCOPYABLE(AnimationControllerPrivate); WTF_MAKE_FAST_ALLOCATED;
     60 public:
     61     AnimationControllerPrivate(Frame*);
     62     ~AnimationControllerPrivate();
     63 
     64     void updateAnimations(double& timeToNextService, double& timeToNextEvent, SetNeedsStyleRecalc callSetNeedsStyleRecalc = DoNotCallSetNeedsStyleRecalc);
     65     void scheduleService();
     66 
     67     PassRefPtr<CompositeAnimation> accessCompositeAnimation(RenderObject*);
     68     bool clear(RenderObject*);
     69 
     70     void updateStyleIfNeededDispatcherFired(Timer<AnimationControllerPrivate>*);
     71     void startUpdateStyleIfNeededDispatcher();
     72     void addEventToDispatch(PassRefPtr<Element> element, const AtomicString& eventType, const String& name, double elapsedTime);
     73     void addNodeChangeToDispatch(PassRefPtr<Node>);
     74 
     75     bool hasAnimations() const { return !m_compositeAnimations.isEmpty(); }
     76 
     77     void suspendAnimations();
     78     void resumeAnimations();
     79     void serviceAnimations();
     80 
     81     void suspendAnimationsForDocument(Document*);
     82     void resumeAnimationsForDocument(Document*);
     83 
     84     bool isRunningAnimationOnRenderer(RenderObject*, CSSPropertyID, bool isRunningNow) const;
     85     bool isRunningAcceleratableAnimationOnRenderer(RenderObject*) const;
     86     bool isRunningAcceleratedAnimationOnRenderer(RenderObject*, CSSPropertyID, bool isRunningNow) const;
     87 
     88     void pauseAnimationsForTesting(double t);
     89     unsigned numberOfActiveAnimations(Document*) const;
     90 
     91     PassRefPtr<RenderStyle> getAnimatedStyleForRenderer(RenderObject* renderer);
     92 
     93     double beginAnimationUpdateTime();
     94     void setBeginAnimationUpdateTime(double t) { m_beginAnimationUpdateTime = t; }
     95     void endAnimationUpdate();
     96     void receivedStartTimeResponse(double);
     97 
     98     void addToAnimationsWaitingForStyle(AnimationBase*);
     99     void removeFromAnimationsWaitingForStyle(AnimationBase*);
    100 
    101     void addToAnimationsWaitingForStartTimeResponse(AnimationBase*, bool willGetResponse);
    102     void removeFromAnimationsWaitingForStartTimeResponse(AnimationBase*);
    103 
    104     void animationWillBeRemoved(AnimationBase*);
    105 
    106     void scheduleServiceForRenderer(RenderObject*);
    107 
    108 private:
    109     void animationTimerFired(Timer<AnimationControllerPrivate>*);
    110 
    111     void scheduleService(double timeToNextService, double timeToNextEvent);
    112 
    113     void styleAvailable();
    114     void fireEventsAndUpdateStyle();
    115     void startTimeResponse(double t);
    116 
    117     typedef HashMap<RenderObject*, RefPtr<CompositeAnimation> > RenderObjectAnimationMap;
    118 
    119     RenderObjectAnimationMap m_compositeAnimations;
    120     Timer<AnimationControllerPrivate> m_animationTimer;
    121     Timer<AnimationControllerPrivate> m_updateStyleIfNeededDispatcher;
    122     Frame* m_frame;
    123 
    124     class EventToDispatch {
    125     public:
    126         RefPtr<Element> element;
    127         AtomicString eventType;
    128         String name;
    129         double elapsedTime;
    130     };
    131 
    132     Vector<EventToDispatch> m_eventsToDispatch;
    133     Vector<RefPtr<Node> > m_nodeChangesToDispatch;
    134 
    135     double m_beginAnimationUpdateTime;
    136 
    137     typedef HashSet<RefPtr<AnimationBase> > WaitingAnimationsSet;
    138     WaitingAnimationsSet m_animationsWaitingForStyle;
    139     WaitingAnimationsSet m_animationsWaitingForStartTimeResponse;
    140     bool m_waitingForAsyncStartNotification;
    141 };
    142 
    143 } // namespace WebCore
    144 
    145 #endif // AnimationControllerPrivate_h
    146