/*

    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 "IntRect.h"

namespace WebCore {

    struct GapRects {

        const IntRect& left() const { return m_left; }

        const IntRect& center() const { return m_center; }

        const IntRect& right() const { return m_right; }

        void uniteLeft(const IntRect& r) { m_left.unite(r); }

        void uniteCenter(const IntRect& r) { m_center.unite(r); }

        void uniteRight(const IntRect& r) { m_right.unite(r); }

        void unite(const GapRects& o) { uniteLeft(o.left()); uniteCenter(o.center()); uniteRight(o.right()); }

        operator IntRect() const

        {

            IntRect 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:

        IntRect m_left;

        IntRect m_center;

        IntRect m_right;

    };

} // namespace WebCore

#endif // GapRects_h