third_party/WebKit/Source/platform/fonts/FontDataForRangeSet.h

/*
 * Copyright (C) 2008, 2009 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
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef FontDataForRangeSet_h
#define FontDataForRangeSet_h

#include "platform/fonts/FontData.h"
#include "platform/fonts/SimpleFontData.h"
#include "platform/fonts/UnicodeRangeSet.h"
#include "wtf/Allocator.h"
#include "wtf/text/CharacterNames.h"

namespace blink {

class SimpleFontData;

class PLATFORM_EXPORT FontDataForRangeSet
    : public RefCounted<FontDataForRangeSet> {
 public:
  explicit FontDataForRangeSet(PassRefPtr<SimpleFontData> fontData = nullptr,
                               PassRefPtr<UnicodeRangeSet> rangeSet = nullptr)
      : m_fontData(fontData), m_rangeSet(rangeSet) {}

  FontDataForRangeSet(const FontDataForRangeSet& other);

  virtual ~FontDataForRangeSet(){};

  bool contains(UChar32 testChar) const {
    return !m_rangeSet || m_rangeSet->contains(testChar);
  }
  bool isEntireRange() const {
    return !m_rangeSet || m_rangeSet->isEntireRange();
  }
  UnicodeRangeSet* ranges() const { return m_rangeSet.get(); }
  bool hasFontData() const { return m_fontData.get(); }
  const SimpleFontData* fontData() const { return m_fontData.get(); }

 protected:
  RefPtr<SimpleFontData> m_fontData;
  RefPtr<UnicodeRangeSet> m_rangeSet;
};

class PLATFORM_EXPORT FontDataForRangeSetFromCache
    : public FontDataForRangeSet {
 public:
  explicit FontDataForRangeSetFromCache(
      PassRefPtr<SimpleFontData> fontData,
      PassRefPtr<UnicodeRangeSet> rangeSet = nullptr)
      : FontDataForRangeSet(std::move(fontData), std::move(rangeSet)) {}
  virtual ~FontDataForRangeSetFromCache();
};

}  // namespace blink

#endif