WebCore/CSSFontFace.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 CSSFontFace_h
  27 #define CSSFontFace_h
  28
  29 #include "FontTraitsMask.h"
  30 #include <wtf/HashSet.h>
  31 #include <wtf/PassRefPtr.h>
  32 #include <wtf/RefCounted.h>
  33 #include <wtf/Vector.h>
  34 #include <wtf/unicode/Unicode.h>
  35
  36 namespace WebCore {
  37
  38 class CSSFontFaceSource;
  39 class CSSSegmentedFontFace;
  40 class FontDescription;
  41 class SimpleFontData;
  42
  43 class CSSFontFace : public RefCounted<CSSFontFace> {
  44 public:
  45     static PassRefPtr<CSSFontFace> create(FontTraitsMask traitsMask) { return adoptRef(new CSSFontFace(traitsMask)); }
  46     ~CSSFontFace();
  47
  48     FontTraitsMask traitsMask() const { return m_traitsMask; }
  49
  50     struct UnicodeRange;
  51
  52     void addRange(UChar32 from, UChar32 to) { m_ranges.append(UnicodeRange(from, to)); }
  53     const Vector<UnicodeRange>& ranges() const { return m_ranges; }
  54
  55     void addedToSegmentedFontFace(CSSSegmentedFontFace*);
  56     void removedFromSegmentedFontFace(CSSSegmentedFontFace*);
  57
  58     bool isLoaded() const;
  59     bool isValid() const;
  60
  61     void addSource(CSSFontFaceSource*);
  62
  63     void fontLoaded(CSSFontFaceSource*);
  64
  65     SimpleFontData* getFontData(const FontDescription&, bool syntheticBold, bool syntheticItalic);
  66
  67     struct UnicodeRange {
  68         UnicodeRange(UChar32 from, UChar32 to)
  69             : m_from(from)
  70             , m_to(to)
  71         {
  72         }
  73
  74         UChar32 from() const { return m_from; }
  75         UChar32 to() const { return m_to; }
  76
  77     private:
  78         UChar32 m_from;
  79         UChar32 m_to;
  80     };
  81
  82 private:
  83     CSSFontFace(FontTraitsMask traitsMask)
  84         : m_traitsMask(traitsMask)
  85     {
  86     }
  87
  88     FontTraitsMask m_traitsMask;
  89     Vector<UnicodeRange> m_ranges;
  90     HashSet<CSSSegmentedFontFace*> m_segmentedFontFaces;
  91     Vector<CSSFontFaceSource*> m_sources;
  92 };
  93
  94 }
  95
  96 #endif