third_party/WebKit/Source/core/css/CSSSegmentedFontFace.h

   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 "platform/fonts/FontTraits.h"
  30 #include "platform/heap/Handle.h"
  31 #include "wtf/HashMap.h"
  32 #include "wtf/ListHashSet.h"
  33 #include "wtf/PassRefPtr.h"
  34 #include "wtf/RefCounted.h"
  35 #include "wtf/Vector.h"
  36 #include "wtf/text/WTFString.h"
  37
  38 namespace blink {
  39
  40 class CSSFontFace;
  41 class CSSFontSelector;
  42 class FontData;
  43 class FontDescription;
  44 class FontFace;
  45 class SegmentedFontData;
  46
  47 class CSSSegmentedFontFace final : public RefCountedWillBeGarbageCollectedFinalized<CSSSegmentedFontFace> {
  48 public:
  49     static PassRefPtrWillBeRawPtr<CSSSegmentedFontFace> create(CSSFontSelector* selector, FontTraits traits)
  50     {
  51         return adoptRefWillBeNoop(new CSSSegmentedFontFace(selector, traits));
  52     }
  53     ~CSSSegmentedFontFace();
  54
  55     CSSFontSelector* fontSelector() const { return m_fontSelector; }
  56     FontTraits traits() const { return m_traits; }
  57
  58     void fontLoaded(CSSFontFace*);
  59     void fontLoadWaitLimitExceeded(CSSFontFace*);
  60
  61     void addFontFace(PassRefPtrWillBeRawPtr<FontFace>, bool cssConnected);
  62     void removeFontFace(PassRefPtrWillBeRawPtr<FontFace>);
  63     bool isEmpty() const { return m_fontFaces.isEmpty(); }
  64
  65     PassRefPtr<FontData> getFontData(const FontDescription&);
  66
  67     bool checkFont(const String&) const;
  68     void match(const String&, WillBeHeapVector<RefPtrWillBeMember<FontFace>>&) const;
  69     void willUseFontData(const FontDescription&, UChar32);
  70
  71     DECLARE_TRACE();
  72
  73 private:
  74     CSSSegmentedFontFace(CSSFontSelector*, FontTraits);
  75
  76     void pruneTable();
  77     bool isValid() const;
  78
  79     using FontFaceList = WillBeHeapListHashSet<RefPtrWillBeMember<FontFace>>;
  80
  81     RawPtrWillBeMember<CSSFontSelector> m_fontSelector;
  82     FontTraits m_traits;
  83     HashMap<unsigned, RefPtr<SegmentedFontData>> m_fontDataTable;
  84     // All non-CSS-connected FontFaces are stored after the CSS-connected ones.
  85     FontFaceList m_fontFaces;
  86     FontFaceList::iterator m_firstNonCssConnectedFace;
  87 };
  88
  89 } // namespace blink
  90
  91 #endif // CSSSegmentedFontFace_h