text: /*
   * Copyright (C) 2008 Apple Inc. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
   * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
   * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_FONTS_FONT_DATA_H_
  #define THIRD_PARTY_BLINK_RENDERER_PLATFORM_FONTS_FONT_DATA_H_
  
  #include "base/macros.h"
  #include "base/memory/scoped_refptr.h"
  #include "third_party/blink/renderer/platform/platform_export.h"
  #include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
  #include "third_party/blink/renderer/platform/wtf/forward.h"
  #include "third_party/blink/renderer/platform/wtf/ref_counted.h"
  #include "third_party/blink/renderer/platform/wtf/text/unicode.h"
  
  namespace blink {
  
  class SimpleFontData;
  
  class PLATFORM_EXPORT FontData : public RefCounted<FontData> {
   public:
    FontData() = default;
  
    virtual ~FontData();
  
    virtual const SimpleFontData* FontDataForCharacter(UChar32) const = 0;
    virtual bool IsCustomFont() const = 0;
    virtual bool IsLoading() const = 0;
    // Returns whether this is a temporary font data for a custom font which is
    // not yet loaded.
    virtual bool IsLoadingFallback() const = 0;
    virtual bool IsSegmented() const = 0;
    virtual bool ShouldSkipDrawing() const = 0;
  
   private:
    DISALLOW_COPY_AND_ASSIGN(FontData);
  };
  
  #define DEFINE_FONT_DATA_TYPE_CASTS(thisType, predicate)     \
    template <typename T>                                      \
    inline thisType* To##thisType(const scoped_refptr<T>& fontData) { \
      return To##thisType(fontData.get());                     \
    }                                                          \
    DEFINE_TYPE_CASTS(thisType, FontData, fontData,            \
                      fontData->IsSegmented() == predicate,    \
                      fontData.IsSegmented() == predicate)
  
  }  // namespace blink
  
  #endif  // THIRD_PARTY_BLINK_RENDERER_PLATFORM_FONTS_FONT_DATA_H_
  