bool SVGUseElement::hasCycleUseReferencing(SVGUseElement* use, SVGElementInstance* targetInstance, SVGElement*& newTarget)
{
String id = SVGURIReference::getTarget(use->href());
Element* targetElement = document()->getElementById(id);
newTarget = 0;
if (targetElement && targetElement->isSVGElement())
newTarget = static_cast<SVGElement*>(targetElement);
if (!newTarget)
return false;
// Shortcut for self-references
if (newTarget == this)
return true;
SVGElementInstance* instance = targetInstance->parentNode();
while (instance) {
SVGElement* element = instance->correspondingElement();
// FIXME: This should probably be using getIdAttribute instead of idForStyleResolution.
if (element->hasID() && element->idForStyleResolution() == id)
return true;
instance = instance->parentNode();
}
return false;
}
void SMILTimeContainer::updateAnimations(SMILTime elapsed, double nextManualSampleTime, const String& nextSamplingTarget)
{
SMILTime earliersFireTime = SMILTime::unresolved();
Vector<SVGSMILElement*> toAnimate;
copyToVector(m_scheduledAnimations, toAnimate);
if (nextManualSampleTime) {
SMILTime samplingDiff;
for (unsigned n = 0; n < toAnimate.size(); ++n) {
SVGSMILElement* animation = toAnimate[n];
ASSERT(animation->timeContainer() == this);
SVGElement* targetElement = animation->targetElement();
// FIXME: This should probably be using getIdAttribute instead of idForStyleResolution.
if (!targetElement || !targetElement->hasID() || targetElement->idForStyleResolution() != nextSamplingTarget)
continue;
samplingDiff = animation->intervalBegin();
break;
}
elapsed = SMILTime(nextManualSampleTime) + samplingDiff;
}
// Sort according to priority. Elements with later begin time have higher priority.
// In case of a tie, document order decides.
// FIXME: This should also consider timing relationships between the elements. Dependents
// have higher priority.
sortByPriority(toAnimate, elapsed);
// Calculate animation contributions.
typedef HashMap<ElementAttributePair, RefPtr<SVGSMILElement> > ResultElementMap;
ResultElementMap resultsElements;
for (unsigned n = 0; n < toAnimate.size(); ++n) {
SVGSMILElement* animation = toAnimate[n];
ASSERT(animation->timeContainer() == this);
SVGElement* targetElement = animation->targetElement();
if (!targetElement)
continue;
QualifiedName attributeName = animation->attributeName();
if (attributeName == anyQName()) {
if (animation->hasTagName(SVGNames::animateMotionTag))
attributeName = SVGNames::animateMotionTag;
else
continue;
}
// Results are accumulated to the first animation that animates a particular element/attribute pair.
ElementAttributePair key(targetElement, attributeName);
SVGSMILElement* resultElement = resultsElements.get(key).get();
if (!resultElement) {
if (!animation->hasValidAttributeType())
continue;
resultElement = animation;
resultElement->resetToBaseValue(baseValueFor(key));
resultsElements.add(key, resultElement);
}
// This will calculate the contribution from the animation and add it to the resultsElement.
animation->progress(elapsed, resultElement);
SMILTime nextFireTime = animation->nextProgressTime();
if (nextFireTime.isFinite())
earliersFireTime = min(nextFireTime, earliersFireTime);
}
Vector<SVGSMILElement*> animationsToApply;
ResultElementMap::iterator end = resultsElements.end();
for (ResultElementMap::iterator it = resultsElements.begin(); it != end; ++it)
animationsToApply.append(it->second.get());
// Sort <animateTranform> to be the last one to be applied. <animate> may change transform attribute as
// well (directly or indirectly by modifying <use> x/y) and this way transforms combine properly.
sortByApplyOrder(animationsToApply);
// Apply results to target elements.
for (unsigned n = 0; n < animationsToApply.size(); ++n)
animationsToApply[n]->applyResultsToTarget();
startTimer(earliersFireTime, animationFrameDelay);
Document::updateStyleForAllDocuments();
}