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/*
Copyright (C) 2007 Eric Seidel <eric@webkit.org>
Copyright (C) 2009 Apple Inc. All rights reserved.
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 "config.h"
#if ENABLE(SVG_FONTS)
#include "SVGFontFaceUriElement.h"
#include "CSSFontFaceSrcValue.h"
#include "CachedFont.h"
#include "DocLoader.h"
#include "Document.h"
#include "MappedAttribute.h"
#include "SVGFontFaceElement.h"
#include "SVGNames.h"
#include "XLinkNames.h"
namespace WebCore {
using namespace SVGNames;
SVGFontFaceUriElement::SVGFontFaceUriElement(const QualifiedName& tagName, Document* doc)
: SVGElement(tagName, doc)
{
}
SVGFontFaceUriElement::~SVGFontFaceUriElement()
{
if (m_cachedFont)
m_cachedFont->removeClient(this);
}
PassRefPtr<CSSFontFaceSrcValue> SVGFontFaceUriElement::srcValue() const
{
RefPtr<CSSFontFaceSrcValue> src = CSSFontFaceSrcValue::create(getAttribute(XLinkNames::hrefAttr));
AtomicString value(getAttribute(formatAttr));
src->setFormat(value.isEmpty() ? "svg" : value); // Default format
return src.release();
}
void SVGFontFaceUriElement::parseMappedAttribute(MappedAttribute* attr)
{
const QualifiedName& attrName = attr->name();
if (attrName == XLinkNames::hrefAttr)
loadFont();
else
SVGElement::parseMappedAttribute(attr);
}
void SVGFontFaceUriElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
{
SVGElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
if (!parentNode() || !parentNode()->hasTagName(font_face_srcTag))
return;
Node* grandParent = parentNode()->parentNode();
if (grandParent && grandParent->hasTagName(font_faceTag))
static_cast<SVGFontFaceElement*>(grandParent)->rebuildFontFace();
}
void SVGFontFaceUriElement::insertedIntoDocument()
{
loadFont();
SVGElement::insertedIntoDocument();
}
void SVGFontFaceUriElement::loadFont()
{
if (m_cachedFont)
m_cachedFont->removeClient(this);
String href = getAttribute(XLinkNames::hrefAttr);
if (!href.isNull()) {
DocLoader* docLoader = document()->docLoader();
m_cachedFont = docLoader->requestFont(href);
m_cachedFont->setSVGFont(true);
m_cachedFont->addClient(this);
m_cachedFont->beginLoadIfNeeded(docLoader);
} else
m_cachedFont = 0;
}
}
#endif // ENABLE(SVG_FONTS)
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