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// Copyright (C) 2000-2007, Luca Padovani <padovani@sti.uniurb.it>.
// 
// This file is part of GtkMathView, a flexible, high-quality rendering
// engine for MathML documents.
// 
// GtkMathView is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License as published
// by the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
// 
// GtkMathView 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
// Lesser General Public License for more details.
// 
// You should have received a copy of the GNU Lesser General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

#ifndef __Rectangle_hh__
#define __Rectangle_hh__

#include "scaled.hh"
#include "BoundingBox.hh"

struct GMV_MathView_EXPORT Rectangle
{
  scaled x;
  scaled y;
  scaled width;
  scaled height;

  Rectangle(void) { }
  Rectangle(const scaled& x0, const scaled& y0, const BoundingBox& box)
    : x(x0), y(y0 - box.depth), width(box.width), height(box.verticalExtent()) { }
  Rectangle(const scaled& x0, const scaled& y0, const scaled& width0, const scaled& height0)
    : x(x0), y(y0), width(width0), height(height0) { }

  void zero(void) { x = y = width = height = 0; }

  bool overlaps(const Rectangle& rect) const
  { return overlaps(rect.x, rect.y, rect.width, rect.height); }

  bool overlaps(const scaled& x0, const scaled& y0, const scaled& w0, const scaled& h0) const
  { return x <= x0 + w0 && x + width >= x0 && y <= y0 + h0 && y + height >= y0; }

  bool isNull(void) const
  { return (width == scaled(0)) || (height == scaled(0)); }

  bool isInside(const scaled& x0, const scaled& y0) const
  { return x <= x0 && x0 <= x + width && y <= y0 && y0 <= y + height; }

  void merge(const Rectangle&);
};

#endif // __Rectangle_hh__