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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  * All rights reserved.
      7  *
      8  * This library is free software; you can redistribute it and/or
      9  * modify it under the terms of the GNU Library General Public
     10  * License as published by the Free Software Foundation; either
     11  * version 2 of the License, or (at your option) any later version.
     12  *
     13  * This library is distributed in the hope that it will be useful,
     14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     16  * Library General Public License for more details.
     17  *
     18  * You should have received a copy of the GNU Library General Public License
     19  * along with this library; see the file COPYING.LIB.  If not, write to
     20  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     21  * Boston, MA 02110-1301, USA.
     22  *
     23  */
     24 
     25 #ifndef FontPlatformDataPango_h
     26 #define FontPlatformDataPango_h
     27 
     28 #include "FontDescription.h"
     29 #include "FontOrientation.h"
     30 #include "GlyphBuffer.h"
     31 #include <cairo.h>
     32 #include <pango/pangocairo.h>
     33 #include <wtf/Forward.h>
     34 
     35 namespace WebCore {
     36 
     37 class FontPlatformData {
     38 public:
     39     FontPlatformData(WTF::HashTableDeletedValueType)
     40         : m_context(0)
     41         , m_font(hashTableDeletedFontValue())
     42         , m_size(0)
     43         , m_syntheticBold(false)
     44         , m_syntheticOblique(false)
     45         , m_scaledFont(0)
     46         { }
     47 
     48     FontPlatformData()
     49         : m_context(0)
     50         , m_font(0)
     51         , m_size(0)
     52         , m_syntheticBold(false)
     53         , m_syntheticOblique(false)
     54         , m_scaledFont(0)
     55         { }
     56 
     57     FontPlatformData(const FontDescription&, const AtomicString& family);
     58     FontPlatformData(cairo_font_face_t* fontFace, float size, bool bold, bool italic);
     59     FontPlatformData(float size, bool bold, bool italic);
     60     FontPlatformData(const FontPlatformData&);
     61     ~FontPlatformData();
     62 
     63     static bool init();
     64     bool isFixedPitch();
     65     float size() const { return m_size; }
     66     void setSize(float size) { m_size = size; }
     67     bool syntheticBold() const { return m_syntheticBold; }
     68     bool syntheticOblique() const { return m_syntheticOblique; }
     69 
     70     FontOrientation orientation() const { return Horizontal; } // FIXME: Implement.
     71     void setOrientation(FontOrientation) { } // FIXME: Implement.
     72 
     73     cairo_scaled_font_t* scaledFont() const { return m_scaledFont; }
     74 
     75     unsigned hash() const
     76     {
     77         uintptr_t hashCodes[1] = { reinterpret_cast<uintptr_t>(m_scaledFont) };
     78         return StringHasher::hashMemory<sizeof(hashCodes)>(hashCodes);
     79     }
     80 
     81     bool operator==(const FontPlatformData&) const;
     82     FontPlatformData& operator=(const FontPlatformData&);
     83     bool isHashTableDeletedValue() const
     84     {
     85         return m_font == hashTableDeletedFontValue();
     86     }
     87 
     88 #ifndef NDEBUG
     89     String description() const;
     90 #endif
     91 
     92     static PangoFontMap* m_fontMap;
     93     static GHashTable* m_hashTable;
     94     PangoContext* m_context;
     95     PangoFont* m_font;
     96     float m_size;
     97     bool m_syntheticBold;
     98     bool m_syntheticOblique;
     99     cairo_scaled_font_t* m_scaledFont;
    100 private:
    101     static PangoFont *hashTableDeletedFontValue() { return reinterpret_cast<PangoFont*>(-1); }
    102 };
    103 
    104 }
    105 
    106 #endif // FontPlatformDataPango_h
    107