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