1/* 2 * Copyright (C) 2007 Eric Seidel <eric@webkit.org> 3 * Copyright (C) 2009 Apple Inc. All rights reserved. 4 * 5 * This library is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU Library General Public 7 * License as published by the Free Software Foundation; either 8 * version 2 of the License, or (at your option) any later version. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Library General Public License for more details. 14 * 15 * You should have received a copy of the GNU Library General Public License 16 * along with this library; see the file COPYING.LIB. If not, write to 17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 18 * Boston, MA 02110-1301, USA. 19 */ 20 21#include "config.h" 22 23#if ENABLE(SVG_FONTS) 24#include "SVGFontFaceUriElement.h" 25 26#include "Attribute.h" 27#include "CSSFontFaceSrcValue.h" 28#include "CachedFont.h" 29#include "CachedResourceLoader.h" 30#include "CachedResourceRequest.h" 31#include "Document.h" 32#include "SVGFontFaceElement.h" 33#include "SVGNames.h" 34#include "XLinkNames.h" 35 36namespace WebCore { 37 38using namespace SVGNames; 39 40inline SVGFontFaceUriElement::SVGFontFaceUriElement(const QualifiedName& tagName, Document& document) 41 : SVGElement(tagName, document) 42{ 43 ASSERT(hasTagName(font_face_uriTag)); 44} 45 46PassRefPtr<SVGFontFaceUriElement> SVGFontFaceUriElement::create(const QualifiedName& tagName, Document& document) 47{ 48 return adoptRef(new SVGFontFaceUriElement(tagName, document)); 49} 50 51SVGFontFaceUriElement::~SVGFontFaceUriElement() 52{ 53 if (m_cachedFont) 54 m_cachedFont->removeClient(this); 55} 56 57PassRef<CSSFontFaceSrcValue> SVGFontFaceUriElement::srcValue() const 58{ 59 auto src = CSSFontFaceSrcValue::create(getAttribute(XLinkNames::hrefAttr)); 60 AtomicString value(fastGetAttribute(formatAttr)); 61 src.get().setFormat(value.isEmpty() ? "svg" : value); // Default format 62 return src; 63} 64 65void SVGFontFaceUriElement::parseAttribute(const QualifiedName& name, const AtomicString& value) 66{ 67 if (name == XLinkNames::hrefAttr) 68 loadFont(); 69 else 70 SVGElement::parseAttribute(name, value); 71} 72 73void SVGFontFaceUriElement::childrenChanged(const ChildChange& change) 74{ 75 SVGElement::childrenChanged(change); 76 77 if (!parentNode() || !parentNode()->hasTagName(font_face_srcTag)) 78 return; 79 80 ContainerNode* grandparent = parentNode()->parentNode(); 81 if (grandparent && grandparent->hasTagName(font_faceTag)) 82 toSVGFontFaceElement(grandparent)->rebuildFontFace(); 83} 84 85Node::InsertionNotificationRequest SVGFontFaceUriElement::insertedInto(ContainerNode& rootParent) 86{ 87 loadFont(); 88 return SVGElement::insertedInto(rootParent); 89} 90 91void SVGFontFaceUriElement::loadFont() 92{ 93 if (m_cachedFont) 94 m_cachedFont->removeClient(this); 95 96 const AtomicString& href = getAttribute(XLinkNames::hrefAttr); 97 if (!href.isNull()) { 98 CachedResourceLoader* cachedResourceLoader = document().cachedResourceLoader(); 99 CachedResourceRequest request(ResourceRequest(document().completeURL(href))); 100 request.setInitiator(this); 101 m_cachedFont = cachedResourceLoader->requestFont(request); 102 if (m_cachedFont) { 103 m_cachedFont->addClient(this); 104 m_cachedFont->beginLoadIfNeeded(cachedResourceLoader); 105 } 106 } else 107 m_cachedFont = 0; 108} 109 110} 111 112#endif // ENABLE(SVG_FONTS) 113