1 /* 2 Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org> 3 2004, 2005, 2006 Rob Buis <buis@kde.org> 4 Copyright (C) 2007 Eric Seidel <eric@webkit.org> 5 Copyright (C) 2008 Apple Inc. All rights reserved. 6 Copyright (C) 2008 Cameron McCormack <cam@mcc.id.au> 7 8 This library is free software; you can redistribute it and/or 9 modify it under the terms of the GNU Library General Public 10 License as published by the Free Software Foundation; either 11 version 2 of the License, or (at your option) any later version. 12 13 This library is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 Library General Public License for more details. 17 18 You should have received a copy of the GNU Library General Public License 19 along with this library; see the file COPYING.LIB. If not, write to 20 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 21 Boston, MA 02110-1301, USA. 22 */ 23 24 #ifndef SVGAnimationElement_h 25 #define SVGAnimationElement_h 26 #if ENABLE(SVG_ANIMATION) 27 28 #include "ElementTimeControl.h" 29 #include "Path.h" 30 #include "SMILTime.h" 31 #include "SVGSMILElement.h" 32 #include "SVGExternalResourcesRequired.h" 33 #include "SVGStringList.h" 34 #include "SVGTests.h" 35 #include "UnitBezier.h" 36 37 namespace WebCore { 38 39 class ConditionEventListener; 40 class TimeContainer; 41 42 class SVGAnimationElement : public SVGSMILElement, 43 public SVGTests, 44 public SVGExternalResourcesRequired, 45 public ElementTimeControl { 46 public: 47 SVGAnimationElement(const QualifiedName&, Document*); 48 virtual ~SVGAnimationElement(); 49 50 virtual void parseMappedAttribute(MappedAttribute*); 51 virtual void attributeChanged(Attribute*, bool preserveDecls); 52 virtual void synchronizeProperty(const QualifiedName&); 53 54 // SVGAnimationElement 55 float getStartTime() const; 56 float getCurrentTime() const; 57 float getSimpleDuration(ExceptionCode&) const; 58 59 // ElementTimeControl 60 virtual void beginElement(); 61 virtual void beginElementAt(float offset); 62 virtual void endElement(); 63 virtual void endElementAt(float offset); 64 65 static bool attributeIsCSS(const String& attributeName); 66 67 protected: 68 enum CalcMode { CalcModeDiscrete, CalcModeLinear, CalcModePaced, CalcModeSpline }; 69 CalcMode calcMode() const; 70 71 enum AttributeType { AttributeTypeCSS, AttributeTypeXML, AttributeTypeAuto }; 72 AttributeType attributeType() const; 73 74 String toValue() const; 75 String byValue() const; 76 String fromValue() const; 77 78 enum AnimationMode { NoAnimation, ToAnimation, ByAnimation, ValuesAnimation, FromToAnimation, FromByAnimation, PathAnimation }; 79 AnimationMode animationMode() const; 80 81 virtual bool hasValidTarget() const; 82 83 String targetAttributeBaseValue() const; 84 void setTargetAttributeAnimatedValue(const String&); 85 bool targetAttributeIsCSS() const; 86 87 bool isAdditive() const; 88 bool isAccumulated() const; 89 90 // from SVGSMILElement 91 virtual void startedActiveInterval(); 92 virtual void updateAnimation(float percent, unsigned repeat, SVGSMILElement* resultElement); 93 virtual void endedActiveInterval(); 94 95 private: 96 virtual bool calculateFromAndToValues(const String& fromString, const String& toString) = 0; 97 virtual bool calculateFromAndByValues(const String& fromString, const String& byString) = 0; 98 virtual void calculateAnimatedValue(float percentage, unsigned repeat, SVGSMILElement* resultElement) = 0; calculateDistance(const String &,const String &)99 virtual float calculateDistance(const String& /*fromString*/, const String& /*toString*/) { return -1.f; } animationPath()100 virtual Path animationPath() const { return Path(); } 101 102 void currentValuesForValuesAnimation(float percent, float& effectivePercent, String& from, String& to) const; 103 void calculateKeyTimesForCalcModePaced(); 104 float calculatePercentFromKeyPoints(float percent) const; 105 void currentValuesFromKeyPoints(float percent, float& effectivePercent, String& from, String& to) const; 106 float calculatePercentForSpline(float percent, unsigned splineIndex) const; 107 108 protected: 109 // SVGExternalResourcesRequired 110 DECLARE_ANIMATED_PROPERTY(SVGAnimationElement, SVGNames::externalResourcesRequiredAttr, bool, ExternalResourcesRequired, externalResourcesRequired) 111 112 bool m_animationValid; 113 114 Vector<String> m_values; 115 Vector<float> m_keyTimes; 116 Vector<float> m_keyPoints; 117 Vector<UnitBezier> m_keySplines; 118 String m_lastValuesAnimationFrom; 119 String m_lastValuesAnimationTo; 120 }; 121 122 } // namespace WebCore 123 124 #endif // ENABLE(SVG) 125 #endif // SVGAnimationElement_h 126