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      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 "CSSStyleSheet.h"
     29 #include "FontCustomPlatformData.h"
     30 #include "Node.h"
     31 
     32 namespace WebCore {
     33 
     34 CSSFontFaceSrcValue::~CSSFontFaceSrcValue()
     35 {
     36 }
     37 
     38 #if ENABLE(SVG_FONTS)
     39 bool CSSFontFaceSrcValue::isSVGFontFaceSrc() const
     40 {
     41     return equalIgnoringCase(m_format, "svg");
     42 }
     43 #endif
     44 
     45 bool CSSFontFaceSrcValue::isSupportedFormat() const
     46 {
     47     // Normally we would just check the format, but in order to avoid conflicts with the old WinIE style of font-face,
     48     // 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.
     49     if (m_format.isEmpty()) {
     50         // Check for .eot.
     51         if (!m_resource.startsWith("data:", false) && m_resource.endsWith(".eot", false))
     52             return false;
     53         return true;
     54     }
     55 
     56     return FontCustomPlatformData::supportsFormat(m_format)
     57 #if ENABLE(SVG_FONTS)
     58            || isSVGFontFaceSrc()
     59 #endif
     60            ;
     61 }
     62 
     63 String CSSFontFaceSrcValue::cssText() const
     64 {
     65     String result;
     66     if (isLocal())
     67         result += "local(";
     68     else
     69         result += "url(";
     70     result += m_resource;
     71     result += ")";
     72     if (!m_format.isEmpty())
     73         result += " format(" + m_format + ")";
     74     return result;
     75 }
     76 
     77 void CSSFontFaceSrcValue::addSubresourceStyleURLs(ListHashSet<KURL>& urls, const CSSStyleSheet* styleSheet)
     78 {
     79     if (!isLocal())
     80         addSubresourceURL(urls, styleSheet->completeURL(m_resource));
     81 }
     82 
     83 }
     84 
     85