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/*
* Copyright (C) 2006 Apple Inc. All rights reserved.
* Copyright (C) 2008 Nikolas Zimmermann <zimmermann@kde.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "core/svg/SVGForeignObjectElement.h"
#include "core/dom/StyleChangeReason.h"
#include "core/frame/UseCounter.h"
#include "core/layout/svg/LayoutSVGForeignObject.h"
#include "core/svg/SVGLength.h"
#include "wtf/Assertions.h"
namespace blink {
inline SVGForeignObjectElement::SVGForeignObjectElement(Document& document)
: SVGGraphicsElement(SVGNames::foreignObjectTag, document),
m_x(SVGAnimatedLength::create(this,
SVGNames::xAttr,
SVGLength::create(SVGLengthMode::Width),
CSSPropertyX)),
m_y(SVGAnimatedLength::create(this,
SVGNames::yAttr,
SVGLength::create(SVGLengthMode::Height),
CSSPropertyY)),
m_width(SVGAnimatedLength::create(this,
SVGNames::widthAttr,
SVGLength::create(SVGLengthMode::Width),
CSSPropertyWidth)),
m_height(
SVGAnimatedLength::create(this,
SVGNames::heightAttr,
SVGLength::create(SVGLengthMode::Height),
CSSPropertyHeight)) {
addToPropertyMap(m_x);
addToPropertyMap(m_y);
addToPropertyMap(m_width);
addToPropertyMap(m_height);
UseCounter::count(document, UseCounter::SVGForeignObjectElement);
}
DEFINE_TRACE(SVGForeignObjectElement) {
visitor->trace(m_x);
visitor->trace(m_y);
visitor->trace(m_width);
visitor->trace(m_height);
SVGGraphicsElement::trace(visitor);
}
DEFINE_NODE_FACTORY(SVGForeignObjectElement)
void SVGForeignObjectElement::collectStyleForPresentationAttribute(
const QualifiedName& name,
const AtomicString& value,
MutableStylePropertySet* style) {
SVGAnimatedPropertyBase* property = propertyFromAttribute(name);
if (property == m_width) {
addPropertyToPresentationAttributeStyle(style, CSSPropertyWidth,
m_width->cssValue());
} else if (property == m_height) {
addPropertyToPresentationAttributeStyle(style, CSSPropertyHeight,
m_height->cssValue());
} else if (property == m_x) {
addPropertyToPresentationAttributeStyle(style, CSSPropertyX,
m_x->cssValue());
} else if (property == m_y) {
addPropertyToPresentationAttributeStyle(style, CSSPropertyY,
m_y->cssValue());
} else {
SVGGraphicsElement::collectStyleForPresentationAttribute(name, value,
style);
}
}
void SVGForeignObjectElement::svgAttributeChanged(
const QualifiedName& attrName) {
bool isWidthHeightAttribute =
attrName == SVGNames::widthAttr || attrName == SVGNames::heightAttr;
bool isXYAttribute =
attrName == SVGNames::xAttr || attrName == SVGNames::yAttr;
if (isXYAttribute || isWidthHeightAttribute) {
SVGElement::InvalidationGuard invalidationGuard(this);
invalidateSVGPresentationAttributeStyle();
setNeedsStyleRecalc(
LocalStyleChange,
isWidthHeightAttribute
? StyleChangeReasonForTracing::create(
StyleChangeReason::SVGContainerSizeChange)
: StyleChangeReasonForTracing::fromAttribute(attrName));
updateRelativeLengthsInformation();
if (LayoutObject* layoutObject = this->layoutObject())
markForLayoutAndParentResourceInvalidation(layoutObject);
return;
}
SVGGraphicsElement::svgAttributeChanged(attrName);
}
LayoutObject* SVGForeignObjectElement::createLayoutObject(
const ComputedStyle&) {
return new LayoutSVGForeignObject(this);
}
bool SVGForeignObjectElement::layoutObjectIsNeeded(const ComputedStyle& style) {
// Suppress foreignObject layoutObjects in SVG hidden containers.
// (https://bugs.webkit.org/show_bug.cgi?id=87297)
// Note that we currently do not support foreignObject instantiation via
// <use>, hence it is safe to use parentElement() here. If that changes, this
// method should be updated to use parentOrShadowHostElement() instead.
Element* ancestor = parentElement();
while (ancestor && ancestor->isSVGElement()) {
if (ancestor->layoutObject() &&
ancestor->layoutObject()->isSVGHiddenContainer())
return false;
ancestor = ancestor->parentElement();
}
return SVGGraphicsElement::layoutObjectIsNeeded(style);
}
bool SVGForeignObjectElement::selfHasRelativeLengths() const {
return m_x->currentValue()->isRelative() ||
m_y->currentValue()->isRelative() ||
m_width->currentValue()->isRelative() ||
m_height->currentValue()->isRelative();
}
} // namespace blink
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