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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 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         , m_activeSource(0)
     86     {
     87     }
     88 
     89     FontTraitsMask m_traitsMask;
     90     Vector<UnicodeRange> m_ranges;
     91     HashSet<CSSSegmentedFontFace*> m_segmentedFontFaces;
     92     Vector<CSSFontFaceSource*> m_sources;
     93     CSSFontFaceSource* m_activeSource;
     94 };
     95 
     96 }
     97 
     98 #endif
     99