bool SVGAnimateElement::calculateFromAndToValues(const String& fromString, const String& toString)
{
SVGElement* targetElement = this->targetElement();
if (!targetElement)
return false;
determinePropertyValueTypes(fromString, toString);
ensureAnimator()->calculateFromAndToValues(m_fromProperty, m_toProperty, fromString, toString);
return true;
}
bool SVGAnimateElement::calculateFromAndByValues(const String& fromString, const String& byString)
{
SVGElement* targetElement = this->targetElement();
if (!targetElement)
return false;
if (animationMode() == ByAnimation && !isAdditive())
return false;
ASSERT(!hasTagName(SVGNames::setTag));
determinePropertyValueTypes(fromString, byString);
ensureAnimator()->calculateFromAndByValues(m_fromType, m_toType, fromString, byString);
ASSERT(m_animatedPropertyType == m_animator->type());
return true;
}
bool SVGAnimateElement::calculateFromAndByValues(const String& fromString, const String& byString)
{
SVGElement* targetElement = this->targetElement();
if (!targetElement)
return false;
if (animationMode() == ByAnimation && !isAdditive())
return false;
// from-by animation may only be used with attributes that support addition (e.g. most numeric attributes).
if (animationMode() == FromByAnimation && !animatedPropertyTypeSupportsAddition())
return false;
ASSERT(!isSVGSetElement(*this));
determinePropertyValueTypes(fromString, byString);
ensureAnimator()->calculateFromAndByValues(m_fromProperty, m_toProperty, fromString, byString);
return true;
}
