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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 SVGSMILElement_h
#define SVGSMILElement_h
#if ENABLE(SVG_ANIMATION)
#include "SVGElement.h"
#include "SMILTime.h"
#include <wtf/HashMap.h>
namespace WebCore {
class ConditionEventListener;
class SMILTimeContainer;
// This class implements SMIL interval timing model as needed for SVG animation.
class SVGSMILElement : public SVGElement {
public:
SVGSMILElement(const QualifiedName&, Document*);
virtual ~SVGSMILElement();
static bool isSMILElement(Node* node);
virtual void parseMappedAttribute(MappedAttribute*);
virtual void attributeChanged(Attribute*, bool preserveDecls);
virtual void insertedIntoDocument();
virtual void removedFromDocument();
virtual void finishParsingChildren();
SMILTimeContainer* timeContainer() const { return m_timeContainer.get(); }
SVGElement* targetElement() const;
String attributeName() const;
void beginByLinkActivation();
enum Restart { RestartAlways, RestartWhenNotActive, RestartNever };
Restart restart() const;
enum FillMode { FillRemove, FillFreeze };
FillMode fill() const;
String xlinkHref() const;
SMILTime dur() const;
SMILTime repeatDur() const;
SMILTime repeatCount() const;
SMILTime maxValue() const;
SMILTime minValue() const;
SMILTime elapsed() const;
SMILTime intervalBegin() const { return m_intervalBegin; }
SMILTime intervalEnd() const { return m_intervalEnd; }
SMILTime previousIntervalBegin() const { return m_previousIntervalBegin; }
SMILTime simpleDuration() const;
void progress(SMILTime elapsed, SVGSMILElement* resultsElement);
SMILTime nextProgressTime() const;
static SMILTime parseClockValue(const String&);
static SMILTime parseOffsetValue(const String&);
bool isContributing(SMILTime elapsed) const;
bool isInactive() const;
bool isFrozen() const;
unsigned documentOrderIndex() const { return m_documentOrderIndex; }
void setDocumentOrderIndex(unsigned index) { m_documentOrderIndex = index; }
virtual bool isAdditive() const = 0;
virtual void resetToBaseValue(const String&) = 0;
virtual void applyResultsToTarget() = 0;
protected:
void addBeginTime(SMILTime time);
void addEndTime(SMILTime time);
private:
virtual void startedActiveInterval() = 0;
virtual void updateAnimation(float percent, unsigned repeat, SVGSMILElement* resultElement) = 0;
virtual void endedActiveInterval() = 0;
enum BeginOrEnd { Begin, End };
SMILTime findInstanceTime(BeginOrEnd beginOrEnd, SMILTime minimumTime, bool equalsMinimumOK) const;
void resolveFirstInterval();
void resolveNextInterval();
void resolveInterval(bool first, SMILTime& beginResult, SMILTime& endResult) const;
SMILTime resolveActiveEnd(SMILTime resolvedBegin, SMILTime resolvedEnd) const;
SMILTime repeatingDuration() const;
void checkRestart(SMILTime elapsed);
void beginListChanged();
void endListChanged();
void reschedule();
// This represents conditions on elements begin or end list that need to be resolved on runtime
// for example <animate begin="otherElement.begin + 8s; button.click" ... />
struct Condition {
enum Type { EventBase, Syncbase, AccessKey };
Condition(Type, BeginOrEnd beginOrEnd, const String& baseID, const String& name, SMILTime offset, int repeats = -1);
Type m_type;
BeginOrEnd m_beginOrEnd;
String m_baseID;
String m_name;
SMILTime m_offset;
int m_repeats;
RefPtr<Element> m_syncbase;
RefPtr<ConditionEventListener> m_eventListener;
};
bool parseCondition(const String&, BeginOrEnd beginOrEnd);
void parseBeginOrEnd(const String&, BeginOrEnd beginOrEnd);
Element* eventBaseFor(const Condition&) const;
void connectConditions();
void disconnectConditions();
// Event base timing
void handleConditionEvent(Event*, Condition*);
// Syncbase timing
enum NewOrExistingInterval { NewInterval, ExistingInterval };
void notifyDependentsIntervalChanged(NewOrExistingInterval);
void createInstanceTimesFromSyncbase(SVGSMILElement* syncbase, NewOrExistingInterval);
void addTimeDependent(SVGSMILElement*);
void removeTimeDependent(SVGSMILElement*);
enum ActiveState { Inactive, Active, Frozen };
ActiveState determineActiveState(SMILTime elapsed) const;
float calculateAnimationPercentAndRepeat(SMILTime elapsed, unsigned& repeat) const;
SMILTime calculateNextProgressTime(SMILTime elapsed) const;
Vector<Condition> m_conditions;
bool m_conditionsConnected;
bool m_hasEndEventConditions;
typedef HashSet<SVGSMILElement*> TimeDependentSet;
TimeDependentSet m_timeDependents;
// Instance time lists
Vector<SMILTime> m_beginTimes;
Vector<SMILTime> m_endTimes;
// This is the upcoming or current interval
SMILTime m_intervalBegin;
SMILTime m_intervalEnd;
SMILTime m_previousIntervalBegin;
bool m_isWaitingForFirstInterval;
ActiveState m_activeState;
float m_lastPercent;
unsigned m_lastRepeat;
SMILTime m_nextProgressTime;
RefPtr<SMILTimeContainer> m_timeContainer;
unsigned m_documentOrderIndex;
mutable SMILTime m_cachedDur;
mutable SMILTime m_cachedRepeatDur;
mutable SMILTime m_cachedRepeatCount;
mutable SMILTime m_cachedMin;
mutable SMILTime m_cachedMax;
friend class ConditionEventListener;
};
}
#endif
#endif
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