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      1 /*
      2  * Copyright (C) 2007, 2008 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 #ifndef CachedFont_h
     27 #define CachedFont_h
     28 
     29 #include "CachedResource.h"
     30 #include "FontOrientation.h"
     31 #include "FontRenderingMode.h"
     32 #include "FontWidthVariant.h"
     33 #include "TextOrientation.h"
     34 #include <wtf/Vector.h>
     35 
     36 #if ENABLE(SVG_FONTS)
     37 #include "SVGElement.h"
     38 #include "SVGDocument.h"
     39 #endif
     40 
     41 namespace WebCore {
     42 
     43 class CachedResourceLoader;
     44 class MemoryCache;
     45 class FontPlatformData;
     46 class SVGFontElement;
     47 
     48 struct FontCustomPlatformData;
     49 
     50 class CachedFont : public CachedResource {
     51 public:
     52     CachedFont(const String& url);
     53     virtual ~CachedFont();
     54 
     55     virtual void load(CachedResourceLoader* cachedResourceLoader);
     56 
     57     virtual void didAddClient(CachedResourceClient*);
     58     virtual void data(PassRefPtr<SharedBuffer> data, bool allDataReceived);
     59     virtual void error(CachedResource::Status);
     60 
     61     virtual void allClientsRemoved();
     62 
     63     void checkNotify();
     64 
     65     void beginLoadIfNeeded(CachedResourceLoader* dl);
     66 
     67     bool ensureCustomFontData();
     68     FontPlatformData platformDataFromCustomData(float size, bool bold, bool italic, FontOrientation = Horizontal, TextOrientation = TextOrientationVerticalRight, FontWidthVariant = RegularWidth, FontRenderingMode = NormalRenderingMode);
     69 
     70 #if ENABLE(SVG_FONTS)
     71     bool ensureSVGFontData();
     72     SVGFontElement* getSVGFontById(const String&) const;
     73 #endif
     74 
     75 private:
     76     FontCustomPlatformData* m_fontData;
     77     bool m_loadInitiated;
     78 
     79 #if ENABLE(SVG_FONTS)
     80     RefPtr<SVGDocument> m_externalSVGDocument;
     81 #endif
     82 
     83     friend class MemoryCache;
     84 };
     85 
     86 }
     87 
     88 #endif
     89