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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 #include "core/dom/QualifiedName.h"
     30 #include "core/platform/Timer.h"
     31 #include "core/svg/animation/SMILTime.h"
     32 #include "wtf/HashMap.h"
     33 #include "wtf/HashSet.h"
     34 #include "wtf/PassRefPtr.h"
     35 #include "wtf/RefCounted.h"
     36 #include "wtf/text/StringHash.h"
     37 #include "wtf/text/WTFString.h"
     38 
     39 namespace WebCore {
     40 
     41 class SVGElement;
     42 class SVGSMILElement;
     43 class SVGSVGElement;
     44 
     45 class SMILTimeContainer : public RefCounted<SMILTimeContainer>  {
     46 public:
     47     static PassRefPtr<SMILTimeContainer> create(SVGSVGElement* owner) { return adoptRef(new SMILTimeContainer(owner)); }
     48     ~SMILTimeContainer();
     49 
     50     void schedule(SVGSMILElement*, SVGElement*, const QualifiedName&);
     51     void unschedule(SVGSMILElement*, SVGElement*, const QualifiedName&);
     52     void notifyIntervalsChanged();
     53 
     54     SMILTime elapsed() const;
     55 
     56     bool isActive() const;
     57     bool isPaused() const;
     58     bool isStarted() const;
     59 
     60     void begin();
     61     void pause();
     62     void resume();
     63     void setElapsed(SMILTime);
     64 
     65     void setDocumentOrderIndexesDirty() { m_documentOrderIndexesDirty = true; }
     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, bool seekToTime = false);
     73 
     74     void updateDocumentOrderIndexes();
     75     void sortByPriority(Vector<SVGSMILElement*>& smilElements, SMILTime elapsed);
     76     double lastResumeTime() const { return m_resumeTime ? m_resumeTime : m_beginTime; }
     77 
     78     double m_beginTime;
     79     double m_pauseTime;
     80     double m_resumeTime;
     81     double m_accumulatedActiveTime;
     82     double m_presetStartTime;
     83 
     84     bool m_documentOrderIndexesDirty;
     85 
     86     Timer<SMILTimeContainer> m_timer;
     87 
     88     typedef pair<SVGElement*, QualifiedName> ElementAttributePair;
     89     typedef Vector<SVGSMILElement*> AnimationsVector;
     90     typedef HashMap<ElementAttributePair, OwnPtr<AnimationsVector> > GroupedAnimationsMap;
     91     GroupedAnimationsMap m_scheduledAnimations;
     92 
     93     SVGSVGElement* m_ownerSVGElement;
     94 
     95 #ifndef NDEBUG
     96     bool m_preventScheduledAnimationsChanges;
     97 #endif
     98 };
     99 }
    100 
    101 #endif // SMILTimeContainer_h
    102