File indexing completed on 2024-04-21 14:58:20

 /*
     Copyright (C) 2004, 2005 Nikolas Zimmermann <wildfox@kde.org>
                   2004, 2005, 2006 Rob Buis <buis@kde.org>
     Copyright (C) 2007 Eric Seidel <eric@webkit.org>
     Copyright (C) 2008 Apple Inc. All rights reserved.
 
     This file is part of the KDE project
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
 
     This library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Library General Public License for more details.
 
     You should have received a copy of the GNU Library General Public License
     along with this library; see the file COPYING.LIB.  If not, write to
     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     Boston, MA 02110-1301, USA.
 */
 
 #ifndef SVGAnimationElement_h
 #define SVGAnimationElement_h
 #if ENABLE(SVG_ANIMATION)
 
 #include "ElementTimeControl.h"
 #include "Path.h"
 #include "SMILTime.h"
 #include "SVGSMILElement.h"
 #include "SVGExternalResourcesRequired.h"
 #include "SVGStringList.h"
 #include "SVGTests.h"
 #include "UnitBezier.h"
 
 namespace WebCore
 {
 
 class ConditionEventListener;
 class TimeContainer;
 
 class SVGAnimationElement : public SVGSMILElement,
     public SVGTests,
     public SVGExternalResourcesRequired,
     public ElementTimeControl
 {
 public:
     SVGAnimationElement(const QualifiedName &, Document *);
     virtual ~SVGAnimationElement();
 
     virtual void parseMappedAttribute(MappedAttribute *);
     virtual void attributeChanged(Attribute *, bool preserveDecls);
 
     // SVGAnimationElement
     float getStartTime() const;
     float getCurrentTime() const;
     float getSimpleDuration(ExceptionCode &) const;
 
     // ElementTimeControl
     virtual bool beginElement(ExceptionCode &);
     virtual bool beginElementAt(float offset, ExceptionCode &);
     virtual bool endElement(ExceptionCode &);
     virtual bool endElementAt(float offset, ExceptionCode &);
 
     static bool attributeIsCSS(const String &attributeName);
 
 protected:
 
     enum CalcMode { CalcModeDiscrete, CalcModeLinear, CalcModePaced, CalcModeSpline };
     CalcMode calcMode() const;
 
     enum AttributeType { AttributeTypeCSS, AttributeTypeXML, AttributeTypeAuto };
     AttributeType attributeType() const;
 
     String toValue() const;
     String byValue() const;
     String fromValue() const;
 
     enum AnimationMode { NoAnimation, ToAnimation, ByAnimation, ValuesAnimation, FromToAnimation, FromByAnimation, PathAnimation };
     AnimationMode animationMode() const;
 
     virtual bool hasValidTarget() const;
 
     String targetAttributeBaseValue() const;
     void setTargetAttributeAnimatedValue(const String &);
     bool targetAttributeIsCSS() const;
 
     bool isAdditive() const;
     bool isAccumulated() const;
 
     // from SVGSMILElement
     virtual void startedActiveInterval();
     virtual void updateAnimation(float percent, unsigned repeat, SVGSMILElement *resultElement);
     virtual void endedActiveInterval();
 
     ANIMATED_PROPERTY_FORWARD_DECLARATIONS(SVGExternalResourcesRequired, bool, ExternalResourcesRequired, externalResourcesRequired)
 private:
     virtual bool calculateFromAndToValues(const String &fromString, const String &toString) = 0;
     virtual bool calculateFromAndByValues(const String &fromString, const String &byString) = 0;
     virtual void calculateAnimatedValue(float percentage, unsigned repeat, SVGSMILElement *resultElement) = 0;
     virtual float calculateDistance(const String &fromString, const String &toString)
     {
         return -1.f;
     }
     virtual Path animationPath() const
     {
         return Path();
     }
 
     void currentValuesForValuesAnimation(float percent, float &effectivePercent, String &from, String &to) const;
     void calculateKeyTimesForCalcModePaced();
     float calculatePercentFromKeyPoints(float percent) const;
     void currentValuesFromKeyPoints(float percent, float &effectivePercent, String &from, String &to) const;
     float calculatePercentForSpline(float percent, unsigned splineIndex) const;
 
 protected:
     bool m_animationValid;
 
     Vector<String> m_values;
     Vector<float> m_keyTimes;
     Vector<float> m_keyPoints;
     Vector<UnitBezier> m_keySplines;
     String m_lastValuesAnimationFrom;
     String m_lastValuesAnimationTo;
 };
 
 } // namespace WebCore
 
 #endif // ENABLE(SVG)
 #endif // SVGAnimationElement_h