1 /* 2 * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org> 3 * Copyright (C) 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 27 #if ENABLE(SVG_ANIMATION) 28 #include "ElementTimeControl.h" 29 #include "Path.h" 30 #include "SMILTime.h" 31 #include "SVGAnimatedBoolean.h" 32 #include "SVGExternalResourcesRequired.h" 33 #include "SVGSMILElement.h" 34 #include "SVGStringList.h" 35 #include "SVGTests.h" 36 #include "UnitBezier.h" 37 38 namespace WebCore { 39 40 class ConditionEventListener; 41 class TimeContainer; 42 43 class SVGAnimationElement : public SVGSMILElement, 44 public SVGTests, 45 public SVGExternalResourcesRequired, 46 public ElementTimeControl { 47 public: 48 // SVGAnimationElement 49 float getStartTime() const; 50 float getCurrentTime() const; 51 float getSimpleDuration(ExceptionCode&) const; 52 53 // ElementTimeControl 54 virtual void beginElement(); 55 virtual void beginElementAt(float offset); 56 virtual void endElement(); 57 virtual void endElementAt(float offset); 58 59 static bool isTargetAttributeCSSProperty(SVGElement*, const QualifiedName&); 60 61 protected: 62 SVGAnimationElement(const QualifiedName&, Document*); 63 64 virtual void parseMappedAttribute(Attribute*); 65 66 enum CalcMode { CalcModeDiscrete, CalcModeLinear, CalcModePaced, CalcModeSpline }; 67 CalcMode calcMode() const; 68 69 enum AttributeType { AttributeTypeCSS, AttributeTypeXML, AttributeTypeAuto }; 70 AttributeType attributeType() const; 71 72 String toValue() const; 73 String byValue() const; 74 String fromValue() const; 75 76 enum AnimationMode { NoAnimation, ToAnimation, ByAnimation, ValuesAnimation, FromToAnimation, FromByAnimation, PathAnimation }; 77 AnimationMode animationMode() const; 78 79 String targetAttributeBaseValue() const; 80 void setTargetAttributeAnimatedValue(const String&); 81 82 bool isAdditive() const; 83 bool isAccumulated() const; 84 85 // from SVGSMILElement 86 virtual void startedActiveInterval(); 87 virtual void updateAnimation(float percent, unsigned repeat, SVGSMILElement* resultElement); 88 virtual void endedActiveInterval(); 89 90 private: 91 virtual void attributeChanged(Attribute*, bool preserveDecls); 92 virtual void synchronizeProperty(const QualifiedName&); 93 94 virtual bool calculateFromAndToValues(const String& fromString, const String& toString) = 0; 95 virtual bool calculateFromAndByValues(const String& fromString, const String& byString) = 0; 96 virtual void calculateAnimatedValue(float percentage, unsigned repeat, SVGSMILElement* resultElement) = 0; calculateDistance(const String &,const String &)97 virtual float calculateDistance(const String& /*fromString*/, const String& /*toString*/) { return -1.f; } animationPath()98 virtual Path animationPath() const { return Path(); } 99 100 void currentValuesForValuesAnimation(float percent, float& effectivePercent, String& from, String& to) const; 101 void calculateKeyTimesForCalcModePaced(); 102 float calculatePercentFromKeyPoints(float percent) const; 103 void currentValuesFromKeyPoints(float percent, float& effectivePercent, String& from, String& to) const; 104 float calculatePercentForSpline(float percent, unsigned splineIndex) const; 105 unsigned calculateKeyTimesIndex(float percent) const; 106 107 // Animated property declarations 108 109 // SVGExternalResourcesRequired 110 DECLARE_ANIMATED_BOOLEAN(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