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      1 /*
      2  * Copyright (C) 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 CSSSegmentedFontFace_h
     27 #define CSSSegmentedFontFace_h
     28 
     29 #include "wtf/HashMap.h"
     30 #include "wtf/PassRefPtr.h"
     31 #include "wtf/RefCounted.h"
     32 #include "wtf/Vector.h"
     33 
     34 namespace WebCore {
     35 
     36 class CSSFontFace;
     37 class CSSFontSelector;
     38 class FontData;
     39 class FontDescription;
     40 class SegmentedFontData;
     41 
     42 class CSSSegmentedFontFace : public RefCounted<CSSSegmentedFontFace> {
     43 public:
     44     static PassRefPtr<CSSSegmentedFontFace> create(CSSFontSelector* selector) { return adoptRef(new CSSSegmentedFontFace(selector)); }
     45     ~CSSSegmentedFontFace();
     46 
     47     CSSFontSelector* fontSelector() const { return m_fontSelector; }
     48 
     49     void fontLoaded(CSSFontFace*);
     50 
     51     void appendFontFace(PassRefPtr<CSSFontFace>);
     52 
     53     PassRefPtr<FontData> getFontData(const FontDescription&);
     54 
     55     class LoadFontCallback : public RefCounted<LoadFontCallback> {
     56     public:
     57         virtual ~LoadFontCallback() { }
     58         virtual void notifyLoaded(CSSSegmentedFontFace*) = 0;
     59         virtual void notifyError(CSSSegmentedFontFace*) = 0;
     60     };
     61 
     62     bool checkFont() const;
     63     void loadFont(const FontDescription&, PassRefPtr<LoadFontCallback> loadCallback);
     64 
     65 private:
     66     CSSSegmentedFontFace(CSSFontSelector*);
     67 
     68     void pruneTable();
     69     bool isValid() const;
     70     bool isLoading() const;
     71 
     72     CSSFontSelector* m_fontSelector;
     73     HashMap<unsigned, RefPtr<SegmentedFontData> > m_fontDataTable;
     74     Vector<RefPtr<CSSFontFace>, 1> m_fontFaces;
     75     Vector<RefPtr<LoadFontCallback> > m_callbacks;
     76 };
     77 
     78 } // namespace WebCore
     79 
     80 #endif // CSSSegmentedFontFace_h
     81