static void updateContainerSize(SVGUseElement* useElement, SVGElementInstance* targetInstance)
{
// Depth-first used to write the method in early exit style, no particular other reason.
for (SVGElementInstance* instance = targetInstance->firstChild(); instance; instance = instance->nextSibling())
updateContainerSize(useElement, instance);
SVGElement* correspondingElement = targetInstance->correspondingElement();
ASSERT(correspondingElement);
bool isSymbolTag = correspondingElement->hasTagName(SVGNames::symbolTag);
if (!correspondingElement->hasTagName(SVGNames::svgTag) && !isSymbolTag)
return;
SVGElement* shadowTreeElement = targetInstance->shadowTreeElement();
ASSERT(shadowTreeElement);
ASSERT(shadowTreeElement->hasTagName(SVGNames::svgTag));
// Spec (<use> on <symbol>): This generated 'svg' will always have explicit values for attributes width and height.
// If attributes width and/or height are provided on the 'use' element, then these attributes
// will be transferred to the generated 'svg'. If attributes width and/or height are not specified,
// the generated 'svg' element will use values of 100% for these attributes.
// Spec (<use> on <svg>): If attributes width and/or height are provided on the 'use' element, then these
// values will override the corresponding attributes on the 'svg' in the generated tree.
if (useElement->hasAttribute(SVGNames::widthAttr))
shadowTreeElement->setAttribute(SVGNames::widthAttr, useElement->getAttribute(SVGNames::widthAttr));
else if (isSymbolTag && shadowTreeElement->hasAttribute(SVGNames::widthAttr))
shadowTreeElement->setAttribute(SVGNames::widthAttr, "100%");
if (useElement->hasAttribute(SVGNames::heightAttr))
shadowTreeElement->setAttribute(SVGNames::heightAttr, useElement->getAttribute(SVGNames::heightAttr));
else if (isSymbolTag && shadowTreeElement->hasAttribute(SVGNames::heightAttr))
shadowTreeElement->setAttribute(SVGNames::heightAttr, "100%");
}
void SVGAnimationElement::setTargetAttributeAnimatedValue(const String &value)
{
if (!hasValidTarget()) {
return;
}
SVGElement *target = targetElement();
String attributeName = this->attributeName();
if (!target || attributeName.isEmpty() || value.isNull()) {
return;
}
// We don't want the instance tree to get rebuild. Instances are updated in the loop below.
if (target->isStyled()) {
static_cast<SVGStyledElement *>(target)->setInstanceUpdatesBlocked(true);
}
ExceptionCode ec;
bool isCSS = targetAttributeIsCSS();
if (isCSS) {
// FIXME: This should set the override style, not the inline style.
// Sadly override styles are not yet implemented.
target->style()->setProperty(attributeName, value, "", ec);
} else {
// FIXME: This should set the 'presentation' value, not the actual
// attribute value. Whatever that means in practice.
target->setAttribute(attributeName, value, ec);
}
if (target->isStyled()) {
static_cast<SVGStyledElement *>(target)->setInstanceUpdatesBlocked(false);
}
// If the target element is used in an <use> instance tree, update that as well.
HashSet<SVGElementInstance *> *instances = document()->accessSVGExtensions()->instancesForElement(target);
if (!instances) {
return;
}
HashSet<SVGElementInstance *>::iterator end = instances->end();
for (HashSet<SVGElementInstance *>::iterator it = instances->begin(); it != end; ++it) {
SVGElement *shadowTreeElement = (*it)->shadowTreeElement();
ASSERT(shadowTreeElement);
if (isCSS) {
shadowTreeElement->style()->setProperty(attributeName, value, "", ec);
} else {
shadowTreeElement->setAttribute(attributeName, value, ec);
}
(*it)->correspondingUseElement()->setChanged();
}
}
void SVGAnimationElement::setTargetAttributeAnimatedValue(const String& value)
{
if (!hasValidAttributeType())
return;
SVGElement* targetElement = this->targetElement();
QualifiedName attributeName = this->attributeName();
if (!targetElement || attributeName == anyQName() || value.isNull())
return;
// We don't want the instance tree to get rebuild. Instances are updated in the loop below.
if (targetElement->isStyled())
static_cast<SVGStyledElement*>(targetElement)->setInstanceUpdatesBlocked(true);
bool attributeIsCSSProperty = isTargetAttributeCSSProperty(targetElement, attributeName);
// Stop animation, if attributeType is set to CSS by the user, but the attribute itself is not a CSS property.
if (!attributeIsCSSProperty && attributeType() == AttributeTypeCSS)
return;
ExceptionCode ec;
if (attributeIsCSSProperty) {
// FIXME: This should set the override style, not the inline style.
// Sadly override styles are not yet implemented.
targetElement->style()->setProperty(attributeName.localName(), value, "", ec);
} else {
// FIXME: This should set the 'presentation' value, not the actual
// attribute value. Whatever that means in practice.
targetElement->setAttribute(attributeName, value, ec);
}
if (targetElement->isStyled())
static_cast<SVGStyledElement*>(targetElement)->setInstanceUpdatesBlocked(false);
// If the target element is used in an <use> instance tree, update that as well.
const HashSet<SVGElementInstance*>& instances = targetElement->instancesForElement();
const HashSet<SVGElementInstance*>::const_iterator end = instances.end();
for (HashSet<SVGElementInstance*>::const_iterator it = instances.begin(); it != end; ++it) {
SVGElement* shadowTreeElement = (*it)->shadowTreeElement();
if (!shadowTreeElement)
continue;
if (attributeIsCSSProperty)
shadowTreeElement->style()->setProperty(attributeName.localName(), value, "", ec);
else
shadowTreeElement->setAttribute(attributeName, value, ec);
(*it)->correspondingUseElement()->setNeedsStyleRecalc();
}
}
void SVGUseElement::transferSizeAttributesToTargetClone(SVGElement& shadowElement) const
{
// FIXME: The check for valueInSpecifiedUnits being non-zero below is a workaround for the fact
// that we currently have no good way to tell whether a particular animatable attribute is a value
// indicating it was unspecified, or specified but could not be parsed. Would be nice to fix that some day.
if (is<SVGSymbolElement>(shadowElement)) {
// Spec (<use> on <symbol>): This generated 'svg' will always have explicit values for attributes width and height.
// If attributes width and/or height are provided on the 'use' element, then these attributes
// will be transferred to the generated 'svg'. If attributes width and/or height are not specified,
// the generated 'svg' element will use values of 100% for these attributes.
shadowElement.setAttribute(SVGNames::widthAttr, (widthIsValid() && width().valueInSpecifiedUnits()) ? AtomicString(width().valueAsString()) : "100%");
shadowElement.setAttribute(SVGNames::heightAttr, (heightIsValid() && height().valueInSpecifiedUnits()) ? AtomicString(height().valueAsString()) : "100%");
} else if (is<SVGSVGElement>(shadowElement)) {
// Spec (<use> on <svg>): If attributes width and/or height are provided on the 'use' element, then these
// values will override the corresponding attributes on the 'svg' in the generated tree.
shadowElement.setAttribute(SVGNames::widthAttr, (widthIsValid() && width().valueInSpecifiedUnits()) ? AtomicString(width().valueAsString()) : shadowElement.correspondingElement()->getAttribute(SVGNames::widthAttr));
shadowElement.setAttribute(SVGNames::heightAttr, (heightIsValid() && height().valueInSpecifiedUnits()) ? AtomicString(height().valueAsString()) : shadowElement.correspondingElement()->getAttribute(SVGNames::heightAttr));
}
}
static void transferUseWidthAndHeightIfNeeded(
const SVGUseElement& use,
SVGElement& shadowElement,
const SVGElement& originalElement) {
DEFINE_STATIC_LOCAL(const AtomicString, hundredPercentString, ("100%"));
// Use |originalElement| for checking the element type, because we will
// have replaced a <symbol> with an <svg> in the instance tree.
if (isSVGSymbolElement(originalElement)) {
// Spec (<use> on <symbol>): This generated 'svg' will always have
// explicit values for attributes width and height. If attributes
// width and/or height are provided on the 'use' element, then these
// attributes will be transferred to the generated 'svg'. If attributes
// width and/or height are not specified, the generated 'svg' element
// will use values of 100% for these attributes.
shadowElement.setAttribute(
SVGNames::widthAttr,
use.width()->isSpecified()
? AtomicString(use.width()->currentValue()->valueAsString())
: hundredPercentString);
shadowElement.setAttribute(
SVGNames::heightAttr,
use.height()->isSpecified()
? AtomicString(use.height()->currentValue()->valueAsString())
: hundredPercentString);
} else if (isSVGSVGElement(originalElement)) {
// Spec (<use> on <svg>): If attributes width and/or height are
// provided on the 'use' element, then these values will override the
// corresponding attributes on the 'svg' in the generated tree.
shadowElement.setAttribute(
SVGNames::widthAttr,
use.width()->isSpecified()
? AtomicString(use.width()->currentValue()->valueAsString())
: originalElement.getAttribute(SVGNames::widthAttr));
shadowElement.setAttribute(
SVGNames::heightAttr,
use.height()->isSpecified()
? AtomicString(use.height()->currentValue()->valueAsString())
: originalElement.getAttribute(SVGNames::heightAttr));
}
}
