third_party/WebKit/Source/core/style/StyleInheritedData.h

/*
 * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
 *           (C) 2000 Antti Koivisto (koivisto@kde.org)
 *           (C) 2000 Dirk Mueller (mueller@kde.org)
 * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
 * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 */

#ifndef StyleInheritedData_h
#define StyleInheritedData_h

#include "core/CoreExport.h"
#include "platform/Length.h"
#include "platform/fonts/Font.h"
#include "platform/graphics/Color.h"
#include "platform/wtf/PassRefPtr.h"
#include "platform/wtf/RefCounted.h"

namespace blink {

// TODO(sashab): Move this into a private class on ComputedStyle, and remove
// all methods on it, merging them into copy/creation methods on ComputedStyle
// instead. Keep the allocation logic, only allocating a new object if needed.
class CORE_EXPORT StyleInheritedData
    : public RefCountedCopyable<StyleInheritedData> {
 public:
  static PassRefPtr<StyleInheritedData> Create() {
    return AdoptRef(new StyleInheritedData);
  }
  PassRefPtr<StyleInheritedData> Copy() const {
    return AdoptRef(new StyleInheritedData(*this));
  }

  bool operator==(const StyleInheritedData& other) const {
    return line_height_ == other.line_height_ && font_ == other.font_ &&
           color_ == other.color_ &&
           visited_link_color_ == other.visited_link_color_ &&
           horizontal_border_spacing_ == other.horizontal_border_spacing_ &&
           text_autosizing_multiplier_ == other.text_autosizing_multiplier_ &&
           vertical_border_spacing_ == other.vertical_border_spacing_;
  }
  bool operator!=(const StyleInheritedData& o) const { return !(*this == o); }

  short horizontal_border_spacing_;
  short vertical_border_spacing_;

  // could be packed in a short but doesn't
  // make a difference currently because of padding
  Length line_height_;

  Font font_;
  Color color_;
  Color visited_link_color_;
  float text_autosizing_multiplier_;

 private:
  StyleInheritedData()
      : horizontal_border_spacing_(0),
        vertical_border_spacing_(0),
        line_height_(Length(-100.0, kPercent)),
        color_(Color::kBlack),
        visited_link_color_(Color::kBlack),
        text_autosizing_multiplier_(1) {}

  StyleInheritedData(const StyleInheritedData&) = default;
};

}  // namespace blink

#endif  // StyleInheritedData_h