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      1 /*
      2  * Copyright (C) 2006, 2007, 2008 Apple Inc.
      3  * Copyright (C) 2006 Michael Emmel mike.emmel (at) gmail.com
      4  * Copyright (C) 2007 Holger Hans Peter Freyther
      5  * Copyright (C) 2007 Pioneer Research Center USA, Inc.
      6  * Copyright (C) 2010 Igalia S.L.
      7  * All rights reserved.
      8  *
      9  * This library is free software; you can redistribute it and/or
     10  * modify it under the terms of the GNU Library General Public
     11  * License as published by the Free Software Foundation; either
     12  * version 2 of the License, or (at your option) any later version.
     13  *
     14  * This library is distributed in the hope that it will be useful,
     15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     17  * Library General Public License for more details.
     18  *
     19  * You should have received a copy of the GNU Library General Public License
     20  * along with this library; see the file COPYING.LIB.  If not, write to
     21  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     22  * Boston, MA 02110-1301, USA.
     23  *
     24  */
     25 
     26 #ifndef FontPlatformDataFreeType_h
     27 #define FontPlatformDataFreeType_h
     28 
     29 #include "FontDescription.h"
     30 #include "FontOrientation.h"
     31 #include "GlyphBuffer.h"
     32 #include "HashFunctions.h"
     33 #include "RefPtrCairo.h"
     34 #include <wtf/Forward.h>
     35 
     36 typedef struct _FcFontSet FcFontSet;
     37 
     38 namespace WebCore {
     39 
     40 class FontPlatformData {
     41 public:
     42     FontPlatformData(WTF::HashTableDeletedValueType)
     43         : m_fallbacks(0)
     44         , m_size(0)
     45         , m_syntheticBold(false)
     46         , m_syntheticOblique(false)
     47         , m_scaledFont(hashTableDeletedFontValue())
     48         { }
     49 
     50     FontPlatformData()
     51         : m_fallbacks(0)
     52         , m_size(0)
     53         , m_syntheticBold(false)
     54         , m_syntheticOblique(false)
     55         , m_scaledFont(0)
     56         { }
     57 
     58     FontPlatformData(FcPattern*, const FontDescription&);
     59     FontPlatformData(cairo_font_face_t* fontFace, float size, bool bold, bool italic);
     60     FontPlatformData(float size, bool bold, bool italic);
     61     FontPlatformData(const FontPlatformData&);
     62     FontPlatformData(const FontPlatformData&, float size);
     63 
     64     ~FontPlatformData();
     65 
     66     bool isFixedPitch();
     67     float size() const { return m_size; }
     68     void setSize(float size) { m_size = size; }
     69     bool syntheticBold() const { return m_syntheticBold; }
     70     bool syntheticOblique() const { return m_syntheticOblique; }
     71     bool hasCompatibleCharmap();
     72 
     73     FontOrientation orientation() const { return Horizontal; } // FIXME: Implement.
     74     void setOrientation(FontOrientation) { } // FIXME: Implement.
     75 
     76     cairo_scaled_font_t* scaledFont() const { return m_scaledFont; }
     77 
     78     unsigned hash() const
     79     {
     80         return PtrHash<cairo_scaled_font_t*>::hash(m_scaledFont);
     81     }
     82 
     83     bool operator==(const FontPlatformData&) const;
     84     FontPlatformData& operator=(const FontPlatformData&);
     85     bool isHashTableDeletedValue() const
     86     {
     87         return m_scaledFont == hashTableDeletedFontValue();
     88     }
     89 
     90 #ifndef NDEBUG
     91     String description() const;
     92 #endif
     93 
     94     RefPtr<FcPattern> m_pattern;
     95     mutable FcFontSet* m_fallbacks; // Initialized lazily.
     96     float m_size;
     97     bool m_syntheticBold;
     98     bool m_syntheticOblique;
     99     bool m_fixedWidth;
    100     cairo_scaled_font_t* m_scaledFont;
    101 
    102 private:
    103     void initializeWithFontFace(cairo_font_face_t*);
    104     static cairo_scaled_font_t* hashTableDeletedFontValue() { return reinterpret_cast<cairo_scaled_font_t*>(-1); }
    105 };
    106 
    107 }
    108 
    109 #endif // FontPlatformDataFreeType_h
    110