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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:
create(SVGSVGElement * owner)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 
setDocumentOrderIndexesDirty()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