150 lines
5.9 KiB
C++
150 lines
5.9 KiB
C++
/*
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* Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org>
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* Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
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* Copyright (C) 2007 Eric Seidel <eric@webkit.org>
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* Copyright (C) 2008-2021 Apple Inc. All rights reserved.
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* Copyright (C) 2008 Cameron McCormack <cam@mcc.id.au>
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* Copyright (C) Research In Motion Limited 2011. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#pragma once
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#include "SVGSMILElement.h"
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#include "SVGTests.h"
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#include "UnitBezier.h"
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namespace WebCore {
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class ConditionEventListener;
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class TimeContainer;
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// If we have 'currentColor' or 'inherit' as animation value, we need to grab
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// the value during the animation since the value can be animated itself.
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enum AnimatedPropertyValueType { RegularPropertyValue, CurrentColorValue, InheritValue };
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class SVGAnimationElement : public SVGSMILElement, public SVGTests {
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WTF_MAKE_ISO_ALLOCATED(SVGAnimationElement);
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public:
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float getStartTime() const;
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float getCurrentTime() const;
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float getSimpleDuration() const;
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void beginElement();
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void beginElementAt(float offset);
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void endElement();
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void endElementAt(float offset);
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static bool isTargetAttributeCSSProperty(SVGElement*, const QualifiedName&);
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bool isAdditive() const override;
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bool isAccumulated() const;
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AnimationMode animationMode() const { return m_animationMode; }
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CalcMode calcMode() const { return m_calcMode; }
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AnimatedPropertyValueType fromPropertyValueType() const { return m_fromPropertyValueType; }
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AnimatedPropertyValueType toPropertyValueType() const { return m_toPropertyValueType; }
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void animateAdditiveNumber(float percentage, unsigned repeatCount, float fromNumber, float toNumber, float toAtEndOfDurationNumber, float& animatedNumber)
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{
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float number;
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if (calcMode() == CalcMode::Discrete)
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number = percentage < 0.5 ? fromNumber : toNumber;
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else
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number = (toNumber - fromNumber) * percentage + fromNumber;
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if (isAccumulated() && repeatCount)
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number += toAtEndOfDurationNumber * repeatCount;
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if (isAdditive() && animationMode() != AnimationMode::To)
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animatedNumber += number;
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else
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animatedNumber = number;
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}
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enum class AttributeType : uint8_t { CSS, XML, Auto };
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AttributeType attributeType() const { return m_attributeType; }
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protected:
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SVGAnimationElement(const QualifiedName&, Document&);
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using PropertyRegistry = SVGPropertyOwnerRegistry<SVGAnimationElement, SVGElement, SVGTests>;
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const SVGPropertyRegistry& propertyRegistry() const override { return m_propertyRegistry; }
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virtual void resetAnimation();
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static bool isSupportedAttribute(const QualifiedName&);
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void parseAttribute(const QualifiedName&, const AtomString&) override;
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void svgAttributeChanged(const QualifiedName&) override;
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String toValue() const;
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String byValue() const;
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String fromValue() const;
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String targetAttributeBaseValue();
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// from SVGSMILElement
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void startedActiveInterval() override;
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void updateAnimation(float percent, unsigned repeat) override;
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AnimatedPropertyValueType m_fromPropertyValueType { RegularPropertyValue };
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AnimatedPropertyValueType m_toPropertyValueType { RegularPropertyValue };
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void setAttributeName(const QualifiedName&) override { }
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virtual void updateAnimationMode();
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void setAnimationMode(AnimationMode animationMode) { m_animationMode = animationMode; }
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void setCalcMode(CalcMode calcMode) { m_calcMode = calcMode; }
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private:
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void animationAttributeChanged() override;
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void setAttributeType(const AtomString&);
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virtual bool calculateToAtEndOfDurationValue(const String& toAtEndOfDurationString) = 0;
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virtual bool calculateFromAndToValues(const String& fromString, const String& toString) = 0;
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virtual bool calculateFromAndByValues(const String& fromString, const String& byString) = 0;
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virtual void calculateAnimatedValue(float percent, unsigned repeatCount) = 0;
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virtual std::optional<float> calculateDistance(const String& /*fromString*/, const String& /*toString*/) = 0;
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const Vector<float>& keyTimes() const;
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void currentValuesForValuesAnimation(float percent, float& effectivePercent, String& from, String& to);
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void calculateKeyTimesForCalcModePaced();
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float calculatePercentFromKeyPoints(float percent) const;
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void currentValuesFromKeyPoints(float percent, float& effectivePercent, String& from, String& to) const;
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float calculatePercentForSpline(float percent, unsigned splineIndex) const;
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float calculatePercentForFromTo(float percent) const;
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unsigned calculateKeyTimesIndex(float percent) const;
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void setCalcMode(const AtomString&);
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bool m_animationValid { false };
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AttributeType m_attributeType { AttributeType::Auto };
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Vector<String> m_values;
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Vector<float> m_keyTimesFromAttribute;
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Vector<float> m_keyTimesForPaced;
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Vector<float> m_keyPoints;
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Vector<UnitBezier> m_keySplines;
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String m_lastValuesAnimationFrom;
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String m_lastValuesAnimationTo;
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CalcMode m_calcMode { CalcMode::Linear };
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AnimationMode m_animationMode { AnimationMode::None };
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PropertyRegistry m_propertyRegistry { *this };
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};
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} // namespace WebCore
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