/*
    Copyright (C) 2005, 2006 Apple Inc. All rights reserved.

    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.


    Some useful definitions needed for laying out elements
*/

#ifndef GapRects_h
#define GapRects_h

#include "platform/geometry/LayoutRect.h"

namespace blink {

struct GapRects {
    const LayoutRect& left() const { return m_left; }
    const LayoutRect& center() const { return m_center; }
    const LayoutRect& right() const { return m_right; }

    void uniteLeft(const LayoutRect& r) { m_left.unite(r); }
    void uniteCenter(const LayoutRect& r) { m_center.unite(r); }
    void uniteRight(const LayoutRect& r) { m_right.unite(r); }
    void unite(const GapRects& o) { uniteLeft(o.left()); uniteCenter(o.center()); uniteRight(o.right()); }

    operator LayoutRect() const
    {
        LayoutRect result = m_left;
        result.unite(m_center);
        result.unite(m_right);
        return result;
    }

    bool operator==(const GapRects& other)
    {
        return m_left == other.left() && m_center == other.center() && m_right == other.right();
    }
    bool operator!=(const GapRects& other) { return !(*this == other); }

private:
    LayoutRect m_left;
    LayoutRect m_center;
    LayoutRect m_right;
};

} // namespace blink

#endif // GapRects_h
