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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 "QualifiedName.h"
     32 #include "PlatformString.h"
     33 #include "SMILTime.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 #include <wtf/text/StringHash.h>
     40 
     41 namespace WebCore {
     42 
     43 class SVGElement;
     44 class SVGSMILElement;
     45 class SVGSVGElement;
     46 
     47 class SMILTimeContainer : public RefCounted<SMILTimeContainer>  {
     48 public:
     49     static PassRefPtr<SMILTimeContainer> create(SVGSVGElement* owner) { return adoptRef(new SMILTimeContainer(owner)); }
     50 
     51     void schedule(SVGSMILElement*);
     52     void unschedule(SVGSMILElement*);
     53 
     54     SMILTime elapsed() const;
     55 
     56     bool isActive() const;
     57     bool isPaused() const;
     58 
     59     void begin();
     60     void pause();
     61     void resume();
     62 
     63     void setDocumentOrderIndexesDirty() { m_documentOrderIndexesDirty = true; }
     64 
     65     // Move to a specific time. Only used for DRT testing purposes.
     66     void sampleAnimationAtTime(const String& elementId, double seconds);
     67 
     68 private:
     69     SMILTimeContainer(SVGSVGElement* owner);
     70 
     71     void timerFired(Timer<SMILTimeContainer>*);
     72     void startTimer(SMILTime fireTime, SMILTime minimumDelay = 0);
     73     void updateAnimations(SMILTime elapsed);
     74 
     75     void updateDocumentOrderIndexes();
     76     void sortByPriority(Vector<SVGSMILElement*>& smilElements, SMILTime elapsed);
     77 
     78     typedef pair<SVGElement*, QualifiedName> ElementAttributePair;
     79     String baseValueFor(ElementAttributePair);
     80 
     81     double m_beginTime;
     82     double m_pauseTime;
     83     double m_accumulatedPauseTime;
     84     double m_nextManualSampleTime;
     85     String m_nextSamplingTarget;
     86 
     87     bool m_documentOrderIndexesDirty;
     88 
     89     Timer<SMILTimeContainer> m_timer;
     90 
     91     typedef HashSet<SVGSMILElement*> TimingElementSet;
     92     TimingElementSet m_scheduledAnimations;
     93 
     94     typedef HashMap<ElementAttributePair, String> BaseValueMap;
     95     BaseValueMap m_savedBaseValues;
     96 
     97     SVGSVGElement* m_ownerSVGElement;
     98 };
     99 }
    100 
    101 #endif // ENABLE(SVG)
    102 #endif // SMILTimeContainer_h
    103