WebCore/CachedFont.h

   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 "FontRenderingMode.h"
  31 #include <wtf/Vector.h>
  32
  33 #if ENABLE(SVG_FONTS)
  34 #include "SVGElement.h"
  35 #include "SVGDocument.h"
  36 #endif
  37
  38 namespace WebCore {
  39
  40 class DocLoader;
  41 class Cache;
  42 class FontCustomPlatformData;
  43 class FontPlatformData;
  44 class SVGFontElement;
  45
  46 class CachedFont : public CachedResource {
  47 public:
  48     CachedFont(const String& url);
  49     virtual ~CachedFont();
  50
  51     virtual void load(DocLoader* docLoader);
  52
  53     virtual void addClient(CachedResourceClient*);
  54     virtual void data(PassRefPtr<SharedBuffer> data, bool allDataReceived);
  55     virtual void error();
  56
  57     virtual void allClientsRemoved();
  58
  59     virtual bool schedule() const { return true; }
  60
  61     void checkNotify();
  62
  63     void beginLoadIfNeeded(DocLoader* dl);
  64
  65     bool ensureCustomFontData();
  66     FontPlatformData platformDataFromCustomData(float size, bool bold, bool italic, FontRenderingMode = NormalRenderingMode);
  67
  68 #if ENABLE(SVG_FONTS)
  69     bool isSVGFont() const { return m_isSVGFont; }
  70     void setSVGFont(bool isSVG) { m_isSVGFont = isSVG; }
  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     bool m_isSVGFont;
  81     RefPtr<SVGDocument> m_externalSVGDocument;
  82 #endif
  83
  84     friend class Cache;
  85 };
  86
  87 }
  88
  89 #endif