WebCore/FontFamily.h

   1 /*
   2  * Copyright (C) 2003, 2006, 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 FontFamily_h
  27 #define FontFamily_h
  28
  29 #include "AtomicString.h"
  30 #include <wtf/RefCounted.h>
  31 #include <wtf/ListRefPtr.h>
  32
  33 namespace WebCore {
  34
  35 class SharedFontFamily;
  36
  37 class FontFamily {
  38 public:
  39     FontFamily() { }
  40     FontFamily(const FontFamily&);
  41     FontFamily& operator=(const FontFamily&);
  42
  43     void setFamily(const AtomicString& family) { m_family = family; }
  44     const AtomicString& family() const { return m_family; }
  45     bool familyIsEmpty() const { return m_family.isEmpty(); }
  46
  47     const FontFamily* next() const;
  48
  49     void appendFamily(PassRefPtr<SharedFontFamily>);
  50     PassRefPtr<SharedFontFamily> releaseNext();
  51
  52 private:
  53     AtomicString m_family;
  54     ListRefPtr<SharedFontFamily> m_next;
  55 };
  56
  57 class SharedFontFamily : public FontFamily, public RefCounted<SharedFontFamily> {
  58 public:
  59     static PassRefPtr<SharedFontFamily> create()
  60     {
  61         return adoptRef(new SharedFontFamily);
  62     }
  63
  64 private:
  65     SharedFontFamily() { }
  66 };
  67
  68 bool operator==(const FontFamily&, const FontFamily&);
  69 inline bool operator!=(const FontFamily& a, const FontFamily& b) { return !(a == b); }
  70
  71 inline const FontFamily* FontFamily::next() const
  72 {
  73     return m_next.get();
  74 }
  75
  76 inline void FontFamily::appendFamily(PassRefPtr<SharedFontFamily> family)
  77 {
  78     m_next = family;
  79 }
  80
  81 inline PassRefPtr<SharedFontFamily> FontFamily::releaseNext()
  82 {
  83     return m_next.release();
  84 }
  85
  86 }
  87
  88 #endif