?? position.hpp
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/***************************************************************************** * 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
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