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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "config.h"
#if ENABLE(SVG_FONTS)
#include "core/svg/SVGRemoteFontFaceSource.h"
#include "core/SVGNames.h"
#include "core/css/FontLoader.h"
#include "core/dom/ElementTraversal.h"
#include "core/svg/SVGFontData.h"
#include "core/svg/SVGFontElement.h"
#include "core/svg/SVGFontFaceElement.h"
#include "platform/fonts/FontDescription.h"
#include "platform/fonts/SimpleFontData.h"
namespace WebCore {
SVGRemoteFontFaceSource::SVGRemoteFontFaceSource(const String& uri, FontResource* font, PassRefPtrWillBeRawPtr<FontLoader> fontLoader)
: RemoteFontFaceSource(font, fontLoader)
, m_uri(uri)
{
}
SVGRemoteFontFaceSource::~SVGRemoteFontFaceSource()
{
}
bool SVGRemoteFontFaceSource::ensureFontData()
{
return resource()->ensureSVGFontData();
}
PassRefPtr<SimpleFontData> SVGRemoteFontFaceSource::createFontData(const FontDescription& fontDescription)
{
if (!isLoaded())
return createLoadingFallbackFontData(fontDescription);
// Parse the external SVG document, and extract the <font> element.
if (!resource()->ensureSVGFontData())
return nullptr;
if (!m_externalSVGFontElement) {
String fragmentIdentifier;
size_t start = m_uri.find('#');
if (start != kNotFound)
fragmentIdentifier = m_uri.substring(start + 1);
m_externalSVGFontElement = resource()->getSVGFontById(fragmentIdentifier);
}
if (!m_externalSVGFontElement)
return nullptr;
// Select first <font-face> child
if (SVGFontFaceElement* fontFaceElement = Traversal<SVGFontFaceElement>::firstChild(*m_externalSVGFontElement)) {
return SimpleFontData::create(
SVGFontData::create(fontFaceElement),
fontDescription.effectiveFontSize(),
fontDescription.isSyntheticBold(),
fontDescription.isSyntheticItalic());
}
return nullptr;
}
void SVGRemoteFontFaceSource::trace(Visitor* visitor)
{
visitor->trace(m_externalSVGFontElement);
RemoteFontFaceSource::trace(visitor);
}
} // namespace WebCore
#endif // ENABLE(SVG_FONTS)
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