1/* 2 * Copyright (C) 2007, 2010 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include "config.h" 27#include "CSSFontFaceSrcValue.h" 28#include "CachedFont.h" 29#include "CachedResourceLoader.h" 30#include "CachedResourceRequest.h" 31#include "CachedResourceRequestInitiators.h" 32#include "Document.h" 33#include "FontCustomPlatformData.h" 34#include "Node.h" 35#include "SVGFontFaceElement.h" 36#include "StyleSheetContents.h" 37#include <wtf/text/StringBuilder.h> 38 39namespace WebCore { 40 41#if ENABLE(SVG_FONTS) 42bool CSSFontFaceSrcValue::isSVGFontFaceSrc() const 43{ 44 return equalIgnoringCase(m_format, "svg"); 45} 46#endif 47 48bool CSSFontFaceSrcValue::isSupportedFormat() const 49{ 50 // Normally we would just check the format, but in order to avoid conflicts with the old WinIE style of font-face, 51 // we will also check to see if the URL ends with .eot. If so, we'll go ahead and assume that we shouldn't load it. 52 if (m_format.isEmpty()) { 53 // Check for .eot. 54 if (!m_resource.startsWith("data:", false) && m_resource.endsWith(".eot", false)) 55 return false; 56 return true; 57 } 58 59 return FontCustomPlatformData::supportsFormat(m_format) 60#if ENABLE(SVG_FONTS) 61 || isSVGFontFaceSrc() 62#endif 63 ; 64} 65 66String CSSFontFaceSrcValue::customCssText() const 67{ 68 StringBuilder result; 69 if (isLocal()) 70 result.appendLiteral("local("); 71 else 72 result.appendLiteral("url("); 73 result.append(m_resource); 74 result.append(')'); 75 if (!m_format.isEmpty()) { 76 result.appendLiteral(" format("); 77 result.append(m_format); 78 result.append(')'); 79 } 80 return result.toString(); 81} 82 83void CSSFontFaceSrcValue::addSubresourceStyleURLs(ListHashSet<KURL>& urls, const StyleSheetContents* styleSheet) const 84{ 85 if (!isLocal()) 86 addSubresourceURL(urls, styleSheet->completeURL(m_resource)); 87} 88 89bool CSSFontFaceSrcValue::hasFailedOrCanceledSubresources() const 90{ 91 if (!m_cachedFont) 92 return false; 93 return m_cachedFont->loadFailedOrCanceled(); 94} 95 96CachedFont* CSSFontFaceSrcValue::cachedFont(Document* document) 97{ 98 if (!m_cachedFont) { 99 CachedResourceRequest request(ResourceRequest(document->completeURL(m_resource))); 100 request.setInitiator(cachedResourceRequestInitiators().css); 101 m_cachedFont = document->cachedResourceLoader()->requestFont(request); 102 } 103 return m_cachedFont.get(); 104} 105 106bool CSSFontFaceSrcValue::equals(const CSSFontFaceSrcValue& other) const 107{ 108 return m_isLocal == other.m_isLocal && m_format == other.m_format && m_resource == other.m_resource; 109} 110 111} 112