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anchor.hpp

00001 /*****************************************************************************
00002  * anchor.hpp
00003  *****************************************************************************
00004  * Copyright (C) 2003 the VideoLAN team
00005  * $Id: anchor.hpp 11664 2005-07-09 06:17:09Z courmisch $
00006  *
00007  * Authors: Cyril Deguet     <[email protected]>
00008  *          Olivier Teulière <[email protected]>
00009  *
00010  * This program is free software; you can redistribute it and/or modify
00011  * it under the terms of the GNU General Public License as published by
00012  * the Free Software Foundation; either version 2 of the License, or
00013  * (at your option) any later version.
00014  *
00015  * This program is distributed in the hope that it will be useful,
00016  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00017  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00018  * GNU General Public License for more details.
00019  *
00020  * You should have received a copy of the GNU General Public License
00021  * along with this program; if not, write to the Free Software
00022  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
00023  *****************************************************************************/
00024 
00025 #ifndef ANCHOR_HPP
00026 #define ANCHOR_HPP
00027 
00028 #include "skin_common.hpp"
00029 #include "generic_layout.hpp"
00030 #include "../utils/bezier.hpp"
00031 
00032 
00034 class Anchor: public SkinObject
00035 {
00036     public:
00037         Anchor( intf_thread_t *pIntf, int xPos, int yPos, int range,
00038                 int priority, const Bezier &rCurve, GenericLayout &rLayout ):
00039             SkinObject( pIntf ), m_xPos( xPos ), m_yPos( yPos ),
00040             m_rCurve( rCurve ), m_range( range ), m_priority( priority ),
00041             m_rLayout( rLayout ) {}
00042         virtual ~Anchor() {}
00043 
00049         bool isHanging( const Anchor &rOther ) const;
00050 
00059         bool canHang( const Anchor &rOther, int &xOffset, int &yOffset ) const;
00060 
00061         // Indicate whether this anchor is reduced to a single point
00062         bool isPoint() const { return m_rCurve.getNbCtrlPoints() == 1; }
00063 
00064         // Getters
00065         int getXPosAbs() const { return (m_xPos + m_rLayout.getLeft()); }
00066         int getYPosAbs() const { return (m_yPos + m_rLayout.getTop()); }
00067 
00068     private:
00070         int m_xPos, m_yPos;
00071 
00073         const Bezier &m_rCurve;
00074 
00076         int m_range;
00077 
00079         int m_priority;
00080 
00082         GenericLayout &m_rLayout;
00083 };
00084 
00085 
00086 #endif

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