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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:
create(SVGSVGElement * owner)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 
setDocumentOrderIndexesDirty()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