/***************************************************************************** * position.hpp ***************************************************************************** * Copyright (C) 2003 VideoLAN * $Id: position.hpp 9641 2004-12-22 13:06:43Z gbazin $ * * Authors: Cyril Deguet     <asmax@via.ecp.fr> *          Olivier Teuli鑢e <ipkiss@via.ecp.fr> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA. *****************************************************************************/#ifndef POSITION_HPP#define POSITION_HPP/// Interface for rectangular objectsclass Box{    public:        /// Get the size of the box        virtual int getWidth() const = 0;        virtual int getHeight() const = 0;};/// Characterization of a rectangleclass Rect: public Box{    public:        Rect( int left, int top, int right, int bottom );        virtual int getLeft() const { return m_left; }        virtual int getTop() const { return m_top; }        virtual int getRight() const { return m_right; }        virtual int getBottom() const { return m_bottom; }        virtual int getWidth() const { return m_right - m_left; }        virtual int getHeight() const { return m_bottom - m_top; }    private:        int m_left;        int m_top;        int m_right;        int m_bottom;};/// Relative position of a rectangle in a boxclass Position{    public:        /// Type for reference edge/corner        typedef enum        {            /// Coordinates are relative to the upper left corner            kLeftTop,            /// Coordinates are relative to the upper right corner            kRightTop,            /// Coordinates are relative to the lower left corner            kLeftBottom,            /// Coordinates are relative to the lower right corner            kRightBottom        } Ref_t;        /// Create a new position relative to the given box        Position( int left, int top, int right, int bottom, const Box &rBox,                  Ref_t refLeftTop = kLeftTop,                  Ref_t refRightBottom = kLeftTop );        ~Position() {}        /// Get the position relative to the left top corner of the box        int getLeft() const;        int getTop() const;        int getRight() const;        int getBottom() const;        /// Get the size of the rectangle        int getWidth() const;        int getHeight() const;    private:        /// Position and reference edge/corner        int m_left;        int m_top;        int m_right;        int m_bottom;        const Box &m_rBox;        Ref_t m_refLeftTop;        Ref_t m_refRighBottom;};#endif