third_party/WebKit/Source/core/style/StyleBoxData.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 StyleBoxData_h
#define StyleBoxData_h

#include "core/CoreExport.h"
#include "core/style/ComputedStyleConstants.h"
#include "platform/Length.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 StyleBoxData : public RefCountedCopyable<StyleBoxData> {
 public:
  static PassRefPtr<StyleBoxData> Create() {
    return AdoptRef(new StyleBoxData);
  }
  PassRefPtr<StyleBoxData> Copy() const {
    return AdoptRef(new StyleBoxData(*this));
  }

  bool operator==(const StyleBoxData& other) const {
    return width_ == other.width_ && height_ == other.height_ &&
           min_width_ == other.min_width_ && max_width_ == other.max_width_ &&
           min_height_ == other.min_height_ &&
           max_height_ == other.max_height_ &&
           vertical_align_length_ == other.vertical_align_length_ &&
           z_index_ == other.z_index_ &&
           has_auto_z_index_ == other.has_auto_z_index_ &&
           box_sizing_ == other.box_sizing_ &&
           box_decoration_break_ == other.box_decoration_break_;
  }
  bool operator!=(const StyleBoxData& o) const { return !(*this == o); }

 private:
  friend class ComputedStyle;

  StyleBoxData()
      : width_(Length()),
        height_(Length()),
        min_width_(Length()),
        max_width_(Length(kMaxSizeNone)),
        min_height_(Length()),
        max_height_(Length(kMaxSizeNone)),
        z_index_(0),
        has_auto_z_index_(static_cast<unsigned>(true)),
        box_sizing_(static_cast<unsigned>(EBoxSizing::kContentBox)),
        box_decoration_break_(
            static_cast<unsigned>(EBoxDecorationBreak::kSlice)) {}

  StyleBoxData(const StyleBoxData&) = default;

  Length width_;
  Length height_;

  Length min_width_;
  Length max_width_;

  Length min_height_;
  Length max_height_;

  Length vertical_align_length_;

  int z_index_;
  unsigned has_auto_z_index_ : 1;
  unsigned box_sizing_ : 1;            // EBoxSizing
  unsigned box_decoration_break_ : 1;  // EBoxDecorationBreak
};

}  // namespace blink

#endif  // StyleBoxData_h