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 * Copyright (C) Research In Motion Limited 2011. All rights reserved.
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.
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.
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.
25 #ifndef SVGAnimationElement_h
26 #define SVGAnimationElement_h
28 #include "core/svg/SVGAnimatedBoolean.h"
29 #include "core/svg/SVGTests.h"
30 #include "core/svg/animation/SVGSMILElement.h"
31 #include "platform/animation/UnitBezier.h"
32 #include "wtf/Functional.h"
43 PathAnimation // Used by AnimateMotion.
46 // If we have 'inherit' as animation value, we need to grab the value
47 // during the animation since the value can be animated itself.
48 enum AnimatedPropertyValueType {
60 class SVGAnimationElement : public SVGSMILElement,
63 // SVGAnimationElement
64 float getStartTime() const;
65 float getCurrentTime() const;
66 float getSimpleDuration() const;
69 void beginElementAt(float offset);
71 void endElementAt(float offset);
73 DEFINE_MAPPED_ATTRIBUTE_EVENT_LISTENER(begin, beginEvent);
74 DEFINE_MAPPED_ATTRIBUTE_EVENT_LISTENER(end, endEvent);
75 DEFINE_MAPPED_ATTRIBUTE_EVENT_LISTENER(repeat, repeatEvent);
77 static bool isTargetAttributeCSSProperty(SVGElement*, const QualifiedName&);
79 virtual bool isAdditive();
80 bool isAccumulated() const;
81 AnimationMode animationMode() const { return m_animationMode; }
82 CalcMode calcMode() const { return m_calcMode; }
84 enum ShouldApplyAnimation {
90 ShouldApplyAnimation shouldApplyAnimation(SVGElement* targetElement, const QualifiedName& attributeName);
92 AnimatedPropertyValueType fromPropertyValueType() const { return m_fromPropertyValueType; }
93 AnimatedPropertyValueType toPropertyValueType() const { return m_toPropertyValueType; }
95 template<typename AnimatedType, typename ParseTypeFromStringType>
96 void adjustForInheritance(ParseTypeFromStringType parseTypeFromString, AnimatedPropertyValueType valueType, AnimatedType& animatedType, SVGElement* contextElement)
98 if (valueType != InheritValue)
100 // Replace 'inherit' by its computed property value.
102 adjustForInheritance(contextElement, attributeName(), typeString);
103 animatedType = parseTypeFromString(this, typeString);
106 template<typename AnimatedType>
107 void animateDiscreteType(float percentage, const AnimatedType& fromType, const AnimatedType& toType, AnimatedType& animatedType)
109 if ((animationMode() == FromToAnimation && percentage > 0.5) || animationMode() == ToAnimation || percentage == 1) {
110 animatedType = AnimatedType(toType);
113 animatedType = AnimatedType(fromType);
116 void animateAdditiveNumber(float percentage, unsigned repeatCount, float fromNumber, float toNumber, float toAtEndOfDurationNumber, float& animatedNumber)
119 if (calcMode() == CalcModeDiscrete)
120 number = percentage < 0.5 ? fromNumber : toNumber;
122 number = (toNumber - fromNumber) * percentage + fromNumber;
124 if (isAccumulated() && repeatCount)
125 number += toAtEndOfDurationNumber * repeatCount;
127 if (isAdditive() && animationMode() != ToAnimation)
128 animatedNumber += number;
130 animatedNumber = number;
134 SVGAnimationElement(const QualifiedName&, Document&);
136 void computeCSSPropertyValue(SVGElement*, CSSPropertyID, String& value);
137 void determinePropertyValueTypes(const String& from, const String& to);
139 bool isSupportedAttribute(const QualifiedName&);
140 virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
141 virtual void svgAttributeChanged(const QualifiedName&) OVERRIDE;
148 AttributeType attributeType() const { return m_attributeType; }
150 String toValue() const;
151 String byValue() const;
152 String fromValue() const;
154 // from SVGSMILElement
155 virtual void startedActiveInterval() OVERRIDE;
156 virtual void updateAnimation(float percent, unsigned repeat, SVGSMILElement* resultElement) OVERRIDE;
158 AnimatedPropertyValueType m_fromPropertyValueType;
159 AnimatedPropertyValueType m_toPropertyValueType;
161 virtual void setTargetElement(SVGElement*) OVERRIDE;
162 virtual void setAttributeName(const QualifiedName&) OVERRIDE;
164 bool hasInvalidCSSAttributeType() const { return m_hasInvalidCSSAttributeType; }
166 virtual void updateAnimationMode();
167 void setAnimationMode(AnimationMode animationMode) { m_animationMode = animationMode; }
168 void setCalcMode(CalcMode calcMode) { m_calcMode = calcMode; }
171 virtual void animationAttributeChanged() OVERRIDE;
172 void setAttributeType(const AtomicString&);
174 void checkInvalidCSSAttributeType(SVGElement*);
176 virtual bool calculateToAtEndOfDurationValue(const String& toAtEndOfDurationString) = 0;
177 virtual bool calculateFromAndToValues(const String& fromString, const String& toString) = 0;
178 virtual bool calculateFromAndByValues(const String& fromString, const String& byString) = 0;
179 virtual void calculateAnimatedValue(float percent, unsigned repeatCount, SVGSMILElement* resultElement) = 0;
180 virtual float calculateDistance(const String& /*fromString*/, const String& /*toString*/) { return -1.f; }
182 void currentValuesForValuesAnimation(float percent, float& effectivePercent, String& from, String& to);
183 void calculateKeyTimesForCalcModePaced();
184 float calculatePercentFromKeyPoints(float percent) const;
185 void currentValuesFromKeyPoints(float percent, float& effectivePercent, String& from, String& to) const;
186 float calculatePercentForSpline(float percent, unsigned splineIndex) const;
187 float calculatePercentForFromTo(float percent) const;
188 unsigned calculateKeyTimesIndex(float percent) const;
190 void adjustForInheritance(SVGElement* targetElement, const QualifiedName& attributeName, String&);
192 void setCalcMode(const AtomicString&);
194 bool m_animationValid;
196 AttributeType m_attributeType;
197 Vector<String> m_values;
198 // FIXME: We should probably use doubles for this, but there's no point
199 // making such a change unless all SVG logic for sampling animations is
200 // changed to use doubles.
201 Vector<float> m_keyTimes;
202 Vector<float> m_keyPoints;
203 Vector<UnitBezier> m_keySplines;
204 String m_lastValuesAnimationFrom;
205 String m_lastValuesAnimationTo;
206 bool m_hasInvalidCSSAttributeType;
208 AnimationMode m_animationMode;
211 } // namespace WebCore
213 #endif // SVGAnimationElement_h