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/*
* Copyright (C) 2008 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SMILTimeContainer_h
#define SMILTimeContainer_h
#include "core/dom/QualifiedName.h"
#include "platform/Timer.h"
#include "platform/graphics/ImageAnimationPolicy.h"
#include "platform/heap/Handle.h"
#include "wtf/HashMap.h"
#include "wtf/HashSet.h"
#include "wtf/text/StringHash.h"
#include "wtf/text/WTFString.h"
namespace blink {
class Document;
class SMILTime;
class SVGElement;
class SVGSMILElement;
class SVGSVGElement;
class SMILTimeContainer : public GarbageCollectedFinalized<SMILTimeContainer> {
public:
static SMILTimeContainer* create(SVGSVGElement& owner) {
return new SMILTimeContainer(owner);
}
~SMILTimeContainer();
void schedule(SVGSMILElement*, SVGElement*, const QualifiedName&);
void unschedule(SVGSMILElement*, SVGElement*, const QualifiedName&);
void notifyIntervalsChanged();
double elapsed() const;
bool isPaused() const;
bool isStarted() const;
void start();
void pause();
void resume();
void setElapsed(double);
void serviceAnimations();
bool hasAnimations() const;
void setDocumentOrderIndexesDirty() { m_documentOrderIndexesDirty = true; }
// Advance the animation timeline a single frame.
void advanceFrameForTesting();
DECLARE_TRACE();
private:
explicit SMILTimeContainer(SVGSVGElement& owner);
enum FrameSchedulingState {
// No frame scheduled.
Idle,
// Scheduled a wakeup to update the animation values.
SynchronizeAnimations,
// Scheduled a wakeup to trigger an animation frame.
FutureAnimationFrame,
// Scheduled a animation frame for continuous update.
AnimationFrame
};
enum AnimationPolicyOnceAction {
// Restart OnceTimer if the timeline is not paused.
RestartOnceTimerIfNotPaused,
// Restart OnceTimer.
RestartOnceTimer,
// Cancel OnceTimer.
CancelOnceTimer
};
bool isTimelineRunning() const;
void synchronizeToDocumentTimeline();
void scheduleAnimationFrame(double delayTime);
void cancelAnimationFrame();
void wakeupTimerFired(TimerBase*);
void scheduleAnimationPolicyTimer();
void cancelAnimationPolicyTimer();
void animationPolicyTimerFired(TimerBase*);
ImageAnimationPolicy animationPolicy() const;
bool handleAnimationPolicy(AnimationPolicyOnceAction);
bool canScheduleFrame(SMILTime earliestFireTime) const;
void updateAnimationsAndScheduleFrameIfNeeded(double elapsed,
bool seekToTime = false);
SMILTime updateAnimations(double elapsed, bool seekToTime);
void serviceOnNextFrame();
void scheduleWakeUp(double delayTime, FrameSchedulingState);
bool hasPendingSynchronization() const;
void updateDocumentOrderIndexes();
SVGSVGElement& ownerSVGElement() const;
Document& document() const;
// The latest "restart" time for the time container's timeline. If the
// timeline has not been manipulated (seeked, paused) this will be zero.
double m_presentationTime;
// The time on the document timeline corresponding to |m_presentationTime|.
double m_referenceTime;
FrameSchedulingState m_frameSchedulingState;
bool m_started; // The timeline has been started.
bool m_paused; // The timeline is paused.
bool m_documentOrderIndexesDirty;
Timer<SMILTimeContainer> m_wakeupTimer;
Timer<SMILTimeContainer> m_animationPolicyOnceTimer;
using ElementAttributePair = std::pair<WeakMember<SVGElement>, QualifiedName>;
using AnimationsLinkedHashSet = HeapLinkedHashSet<WeakMember<SVGSMILElement>>;
using GroupedAnimationsMap =
HeapHashMap<ElementAttributePair, Member<AnimationsLinkedHashSet>>;
GroupedAnimationsMap m_scheduledAnimations;
Member<SVGSVGElement> m_ownerSVGElement;
#if DCHECK_IS_ON()
bool m_preventScheduledAnimationsChanges = false;
#endif
};
} // namespace blink
#endif // SMILTimeContainer_h
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