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/svg/animation/SMILTime.h" 31 #include "platform/Timer.h" 32 #include "platform/heap/Handle.h" 33 #include "wtf/HashMap.h" 34 #include "wtf/HashSet.h" 35 #include "wtf/PassRefPtr.h" 36 #include "wtf/RefCounted.h" 37 #include "wtf/text/StringHash.h" 38 #include "wtf/text/WTFString.h" 39 40 namespace WebCore { 41 42 class Document; 43 class SVGElement; 44 class SVGSMILElement; 45 class SVGSVGElement; 46 47 class SMILTimeContainer : public RefCountedWillBeGarbageCollectedFinalized<SMILTimeContainer> { 48 public: create(SVGSVGElement & owner)49 static PassRefPtrWillBeRawPtr<SMILTimeContainer> create(SVGSVGElement& owner) { return adoptRefWillBeNoop(new SMILTimeContainer(owner)); } 50 ~SMILTimeContainer(); 51 52 void schedule(SVGSMILElement*, SVGElement*, const QualifiedName&); 53 void unschedule(SVGSMILElement*, SVGElement*, const QualifiedName&); 54 void notifyIntervalsChanged(); 55 56 SMILTime elapsed() const; 57 58 bool isPaused() const; 59 bool isStarted() const; 60 61 void begin(); 62 void pause(); 63 void resume(); 64 void setElapsed(SMILTime); 65 66 void serviceAnimations(double monotonicAnimationStartTime); 67 bool hasAnimations() const; 68 setDocumentOrderIndexesDirty()69 void setDocumentOrderIndexesDirty() { m_documentOrderIndexesDirty = true; } 70 71 void trace(Visitor*); 72 73 private: 74 explicit SMILTimeContainer(SVGSVGElement& owner); 75 76 enum FrameSchedulingState { 77 // No frame scheduled. 78 Idle, 79 // Scheduled a wakeup to update the animation values. 80 SynchronizeAnimations, 81 // Scheduled a wakeup to trigger an animation frame. 82 FutureAnimationFrame, 83 // Scheduled a animation frame for continuous update. 84 AnimationFrame 85 }; 86 87 bool isTimelineRunning() const; 88 void scheduleAnimationFrame(SMILTime fireTime); 89 void cancelAnimationFrame(); 90 void wakeupTimerFired(Timer<SMILTimeContainer>*); 91 void updateAnimationsAndScheduleFrameIfNeeded(SMILTime elapsed, bool seekToTime = false); 92 SMILTime updateAnimations(SMILTime elapsed, bool seekToTime = false); 93 void serviceOnNextFrame(); 94 void scheduleWakeUp(double delayTime, FrameSchedulingState); 95 bool hasPendingSynchronization() const; 96 97 void updateDocumentOrderIndexes(); lastResumeTime()98 double lastResumeTime() const { return m_resumeTime ? m_resumeTime : m_beginTime; } 99 100 Document& document() const; 101 double currentTime() const; 102 103 double m_beginTime; 104 double m_pauseTime; 105 double m_resumeTime; 106 double m_accumulatedActiveTime; 107 double m_presetStartTime; 108 109 FrameSchedulingState m_frameSchedulingState; 110 bool m_documentOrderIndexesDirty; 111 112 Timer<SMILTimeContainer> m_wakeupTimer; 113 114 typedef pair<RawPtrWillBeWeakMember<SVGElement>, QualifiedName> ElementAttributePair; 115 typedef WillBeHeapLinkedHashSet<RawPtrWillBeWeakMember<SVGSMILElement> > AnimationsLinkedHashSet; 116 typedef WillBeHeapHashMap<ElementAttributePair, OwnPtrWillBeMember<AnimationsLinkedHashSet> > GroupedAnimationsMap; 117 GroupedAnimationsMap m_scheduledAnimations; 118 119 SVGSVGElement& m_ownerSVGElement; 120 121 #ifndef NDEBUG 122 bool m_preventScheduledAnimationsChanges; 123 #endif 124 }; 125 } 126 127 #endif // SMILTimeContainer_h 128