SVGFontFaceUriElement.cpp [plain text]
#include "config.h"
#if ENABLE(SVG_FONTS)
#include "SVGFontFaceUriElement.h"
#include "CSSFontFaceSrcValue.h"
#include "CachedFont.h"
#include "CachedResourceLoader.h"
#include "CachedResourceRequest.h"
#include "Document.h"
#include "SVGFontFaceElement.h"
#include "SVGNames.h"
#include "XLinkNames.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(SVGFontFaceUriElement);
using namespace SVGNames;
inline SVGFontFaceUriElement::SVGFontFaceUriElement(const QualifiedName& tagName, Document& document)
: SVGElement(tagName, document)
{
ASSERT(hasTagName(font_face_uriTag));
}
Ref<SVGFontFaceUriElement> SVGFontFaceUriElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new SVGFontFaceUriElement(tagName, document));
}
SVGFontFaceUriElement::~SVGFontFaceUriElement()
{
if (m_cachedFont)
m_cachedFont->removeClient(*this);
}
Ref<CSSFontFaceSrcValue> SVGFontFaceUriElement::srcValue() const
{
auto src = CSSFontFaceSrcValue::create(getAttribute(SVGNames::hrefAttr, XLinkNames::hrefAttr), LoadedFromOpaqueSource::No);
AtomicString value(attributeWithoutSynchronization(formatAttr));
src.get().setFormat(value.isEmpty() ? "svg" : value); return src;
}
void SVGFontFaceUriElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
if (name == SVGNames::hrefAttr || name == XLinkNames::hrefAttr)
loadFont();
else
SVGElement::parseAttribute(name, value);
}
void SVGFontFaceUriElement::childrenChanged(const ChildChange& change)
{
SVGElement::childrenChanged(change);
if (!parentNode() || !parentNode()->hasTagName(font_face_srcTag))
return;
auto grandparent = makeRefPtr(parentNode()->parentNode());
if (grandparent && grandparent->hasTagName(font_faceTag))
downcast<SVGFontFaceElement>(*grandparent).rebuildFontFace();
}
Node::InsertedIntoAncestorResult SVGFontFaceUriElement::insertedIntoAncestor(InsertionType insertionType, ContainerNode& parentOfInsertedTree)
{
loadFont();
return SVGElement::insertedIntoAncestor(insertionType, parentOfInsertedTree);
}
static bool isSVGFontTarget(const SVGFontFaceUriElement& element)
{
Ref<CSSFontFaceSrcValue> srcValue(element.srcValue());
return srcValue->isSVGFontTarget();
}
void SVGFontFaceUriElement::loadFont()
{
if (m_cachedFont)
m_cachedFont->removeClient(*this);
const AtomicString& href = getAttribute(SVGNames::hrefAttr, XLinkNames::hrefAttr);
if (!href.isNull()) {
ResourceLoaderOptions options = CachedResourceLoader::defaultCachedResourceOptions();
options.contentSecurityPolicyImposition = isInUserAgentShadowTree() ? ContentSecurityPolicyImposition::SkipPolicyCheck : ContentSecurityPolicyImposition::DoPolicyCheck;
CachedResourceLoader& cachedResourceLoader = document().cachedResourceLoader();
CachedResourceRequest request(ResourceRequest(document().completeURL(href)), options);
request.setInitiator(*this);
m_cachedFont = cachedResourceLoader.requestFont(WTFMove(request), isSVGFontTarget(*this)).value_or(nullptr);
if (m_cachedFont) {
m_cachedFont->addClient(*this);
m_cachedFont->beginLoadIfNeeded(cachedResourceLoader);
}
} else
m_cachedFont = nullptr;
}
}
#endif // ENABLE(SVG_FONTS)