anchor.hpp
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- /*****************************************************************************
- * anchor.hpp
- *****************************************************************************
- * Copyright (C) 2003 VideoLAN
- * $Id: anchor.hpp 7228 2004-04-01 21:04:43Z ipkiss $
- *
- * 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 ANCHOR_HPP
- #define ANCHOR_HPP
- #include "skin_common.hpp"
- #include "generic_layout.hpp"
- #include "../utils/bezier.hpp"
- /// Class for the windows anchors
- 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() {}
- /// Return true if the given anchor is hanged by this one
- /// Two conditions are required:
- /// - the other anchor must be in position of anchoring (as defined
- /// by canHang())
- /// - the priority of the other anchor must be lower than this one's
- bool isHanging( const Anchor &rOther ) const;
- /// Return true if the other anchor, moved by the (xOffset, yOffset)
- /// vector, is "hangable" by this one (i.e. if it is in its range of
- /// action), else return false.
- /// When the function returns true, the xOffset and yOffset parameters
- /// are modified to indicate the position that the other anchor would
- /// take if hanged by this one (this position is calculated to minimize
- /// the difference with the old xOffset and yOffset, so that the window
- /// doesn't "jump" in a strange way).
- 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:
- /// Coordinates relative to the window
- int m_xPos, m_yPos;
- /// Curve of the anchor
- const Bezier &m_rCurve;
- /// Range of action
- int m_range;
- /// Priority
- int m_priority;
- /// Parent window
- GenericLayout &m_rLayout;
- };
- #endif