anchor.hpp

/*****************************************************************************
 * anchor.hpp
 *****************************************************************************
 * Copyright (C) 2003 the VideoLAN team
 * $Id: anchor.hpp 11664 2005-07-09 06:17:09Z courmisch $
 *
 * Authors: Cyril Deguet     <[email protected]>
 *          Olivier Teulière <[email protected]>
 *
 * 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 ANCHOR_HPP
#define ANCHOR_HPP

#include "skin_common.hpp"
#include "generic_layout.hpp"
#include "../utils/bezier.hpp"


class Anchor: public SkinObject
{
    public:
        Anchor( intf_thread_t *pIntf, int xPos, int yPos, int range,
                int priority, const Bezier &rCurve, GenericLayout &rLayout ):
            SkinObject( pIntf ), m_xPos( xPos ), m_yPos( yPos ),
            m_rCurve( rCurve ), m_range( range ), m_priority( priority ),
            m_rLayout( rLayout ) {}
        virtual ~Anchor() {}

        bool isHanging( const Anchor &rOther ) const;

        bool canHang( const Anchor &rOther, int &xOffset, int &yOffset ) const;

        // Indicate whether this anchor is reduced to a single point
        bool isPoint() const { return m_rCurve.getNbCtrlPoints() == 1; }

        // Getters
        int getXPosAbs() const { return (m_xPos + m_rLayout.getLeft()); }
        int getYPosAbs() const { return (m_yPos + m_rLayout.getTop()); }

    private:
        int m_xPos, m_yPos;

        const Bezier &m_rCurve;

        int m_range;

        int m_priority;

        GenericLayout &m_rLayout;
};


#endif

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