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      1 /*
      2  * Copyright (C) 2008 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  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef SMILTimeContainer_H
     27 #define SMILTimeContainer_H
     28 
     29 #if ENABLE(SVG)
     30 
     31 #include "PlatformString.h"
     32 #include "SMILTime.h"
     33 #include "StringHash.h"
     34 #include "Timer.h"
     35 #include <wtf/HashMap.h>
     36 #include <wtf/HashSet.h>
     37 #include <wtf/PassRefPtr.h>
     38 #include <wtf/RefCounted.h>
     39 
     40 namespace WebCore {
     41 
     42     class SVGElement;
     43     class SVGSMILElement;
     44     class SVGSVGElement;
     45 
     46     class SMILTimeContainer : public RefCounted<SMILTimeContainer>  {
     47     public:
     48         static PassRefPtr<SMILTimeContainer> create(SVGSVGElement* owner) { return adoptRef(new SMILTimeContainer(owner)); }
     49 
     50         void schedule(SVGSMILElement*);
     51         void unschedule(SVGSMILElement*);
     52 
     53         SMILTime elapsed() const;
     54 
     55         bool isActive() const;
     56         bool isPaused() const;
     57 
     58         void begin();
     59         void pause();
     60         void resume();
     61 
     62         void setDocumentOrderIndexesDirty() { m_documentOrderIndexesDirty = true; }
     63 
     64         // Move to a specific time. Only used for DRT testing purposes.
     65         void sampleAnimationAtTime(const String& elementId, double seconds);
     66 
     67     private:
     68         SMILTimeContainer(SVGSVGElement* owner);
     69 
     70         void timerFired(Timer<SMILTimeContainer>*);
     71         void startTimer(SMILTime fireTime, SMILTime minimumDelay = 0);
     72         void updateAnimations(SMILTime elapsed);
     73 
     74         void updateDocumentOrderIndexes();
     75         void sortByPriority(Vector<SVGSMILElement*>& smilElements, SMILTime elapsed);
     76 
     77         typedef pair<SVGElement*, String> ElementAttributePair;
     78         String baseValueFor(ElementAttributePair);
     79 
     80         double m_beginTime;
     81         double m_pauseTime;
     82         double m_accumulatedPauseTime;
     83         double m_nextManualSampleTime;
     84         String m_nextSamplingTarget;
     85 
     86         bool m_documentOrderIndexesDirty;
     87 
     88         Timer<SMILTimeContainer> m_timer;
     89 
     90         typedef HashSet<SVGSMILElement*> TimingElementSet;
     91         TimingElementSet m_scheduledAnimations;
     92 
     93         typedef HashMap<ElementAttributePair, String> BaseValueMap;
     94         BaseValueMap m_savedBaseValues;
     95 
     96         SVGSVGElement* m_ownerSVGElement;
     97     };
     98 }
     99 
    100 #endif
    101 #endif
    102