205 lines
6.0 KiB
C++
205 lines
6.0 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) 2008-2021 Apple Inc. All rights reserved.
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* Copyright (C) Research In Motion Limited 2011. All rights reserved.
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* Copyright (C) 2014 Adobe Systems Incorporated. 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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#include "config.h"
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#include "SVGAnimateElementBase.h"
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#include "QualifiedName.h"
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#include "SVGAttributeAnimator.h"
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#include "SVGElement.h"
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#include "SVGNames.h"
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#include <wtf/IsoMallocInlines.h>
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namespace WebCore {
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WTF_MAKE_ISO_ALLOCATED_IMPL(SVGAnimateElementBase);
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SVGAnimateElementBase::SVGAnimateElementBase(const QualifiedName& tagName, Document& document)
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: SVGAnimationElement(tagName, document)
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{
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ASSERT(hasTagName(SVGNames::animateTag)
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|| hasTagName(SVGNames::setTag)
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|| hasTagName(SVGNames::animateColorTag)
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|| hasTagName(SVGNames::animateTransformTag));
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}
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SVGAttributeAnimator* SVGAnimateElementBase::animator() const
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{
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ASSERT(targetElement());
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ASSERT(!hasInvalidCSSAttributeType());
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if (!m_animator)
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m_animator = targetElement()->createAnimator(attributeName(), animationMode(), calcMode(), isAccumulated(), isAdditive());
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return m_animator.get();
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}
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bool SVGAnimateElementBase::hasValidAttributeType() const
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{
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if (!targetElement() || hasInvalidCSSAttributeType())
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return false;
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return targetElement()->isAnimatedAttribute(attributeName());
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}
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bool SVGAnimateElementBase::hasInvalidCSSAttributeType() const
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{
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if (!targetElement())
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return false;
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if (!m_hasInvalidCSSAttributeType)
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m_hasInvalidCSSAttributeType = hasValidAttributeName() && attributeType() == AttributeType::CSS && !isTargetAttributeCSSProperty(targetElement(), attributeName());
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return m_hasInvalidCSSAttributeType.value();
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}
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bool SVGAnimateElementBase::isDiscreteAnimator() const
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{
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if (!hasValidAttributeType())
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return false;
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auto* animator = this->animator();
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return animator && animator->isDiscrete();
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}
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void SVGAnimateElementBase::setTargetElement(SVGElement* targetElement)
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{
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SVGAnimationElement::setTargetElement(targetElement);
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resetAnimation();
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}
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void SVGAnimateElementBase::setAttributeName(const QualifiedName& attributeName)
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{
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SVGSMILElement::setAttributeName(attributeName);
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resetAnimation();
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}
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void SVGAnimateElementBase::resetAnimation()
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{
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SVGAnimationElement::resetAnimation();
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m_animator = nullptr;
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m_hasInvalidCSSAttributeType = { };
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}
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bool SVGAnimateElementBase::calculateFromAndToValues(const String& fromString, const String& toString)
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{
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if (!targetElement())
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return false;
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if (auto* animator = this->animator()) {
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animator->setFromAndToValues(*targetElement(), animateRangeString(fromString), animateRangeString(toString));
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return true;
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}
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return false;
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}
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bool SVGAnimateElementBase::calculateFromAndByValues(const String& fromString, const String& byString)
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{
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if (!targetElement())
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return false;
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if (animationMode() == AnimationMode::By && (!isAdditive() || isDiscreteAnimator()))
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return false;
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if (animationMode() == AnimationMode::FromBy && isDiscreteAnimator())
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return false;
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if (auto* animator = this->animator()) {
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animator->setFromAndByValues(*targetElement(), animateRangeString(fromString), animateRangeString(byString));
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return true;
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}
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return false;
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}
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bool SVGAnimateElementBase::calculateToAtEndOfDurationValue(const String& toAtEndOfDurationString)
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{
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if (!targetElement() || toAtEndOfDurationString.isEmpty())
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return false;
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if (isDiscreteAnimator())
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return true;
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if (auto* animator = this->animator()) {
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animator->setToAtEndOfDurationValue(animateRangeString(toAtEndOfDurationString));
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return true;
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}
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return false;
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}
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void SVGAnimateElementBase::startAnimation()
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{
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if (!targetElement())
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return;
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if (auto protectedAnimator = makeRefPtr(this->animator()))
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protectedAnimator->start(*targetElement());
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}
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void SVGAnimateElementBase::calculateAnimatedValue(float progress, unsigned repeatCount)
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{
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if (!targetElement())
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return;
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ASSERT(progress >= 0 && progress <= 1);
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if (hasTagName(SVGNames::setTag))
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progress = 1;
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if (calcMode() == CalcMode::Discrete)
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progress = progress < 0.5 ? 0 : 1;
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if (auto protectedAnimator = makeRefPtr(this->animator()))
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protectedAnimator->animate(*targetElement(), progress, repeatCount);
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}
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void SVGAnimateElementBase::applyResultsToTarget()
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{
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if (!targetElement())
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return;
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if (auto* animator = this->animator())
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animator->apply(*targetElement());
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}
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void SVGAnimateElementBase::stopAnimation(SVGElement* targetElement)
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{
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if (!targetElement)
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return;
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if (auto* animator = this->animatorIfExists())
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animator->stop(*targetElement);
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}
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std::optional<float> SVGAnimateElementBase::calculateDistance(const String& fromString, const String& toString)
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{
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// FIXME: A return value of float is not enough to support paced animations on lists.
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if (!targetElement())
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return { };
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if (auto* animator = this->animator())
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return animator->calculateDistance(*targetElement(), fromString, toString);
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return { };
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}
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} // namespace WebCore
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