position.hpp
资源名称:vlc-1.0.5.zip [点击查看]
上传用户:kjfoods
上传日期:2020-07-06
资源大小:29949k
文件大小:5k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * position.hpp
- *****************************************************************************
- * Copyright (C) 2003 the VideoLAN team
- * $Id: aba4b4af70d2cf41296107cae08755c72241284c $
- *
- * Authors: Cyril Deguet <asmax@via.ecp.fr>
- * Olivier Teulière <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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
- #ifndef POSITION_HPP
- #define POSITION_HPP
- #include "variable.hpp"
- #include "observer.hpp"
- #include "pointer.hpp"
- /// Interface for rectangular objects
- class Box
- {
- public:
- virtual ~Box() {}
- /// Get the size of the box
- virtual int getWidth() const = 0;
- virtual int getHeight() const = 0;
- };
- /// Interface for rectangular objects with a position
- class GenericRect: public Box
- {
- public:
- virtual int getLeft() const = 0;
- virtual int getTop() const = 0;
- };
- /// Characterization of a rectangle
- class SkinsRect: public GenericRect
- {
- public:
- SkinsRect( 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 box
- /**
- * Note: Even if the object is tied to its direct container rectangle, the
- * coordinates returned by getLeft(), getTop(), getRight() and getBottom() are
- * not relative to the direct container (which is usually a panel or the layout)
- * but to the root container (i.e. the layout).
- */
- class Position: public GenericRect
- {
- public:
- /// Type for reference edge/corner
- enum Ref_t
- {
- /// 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
- };
- /// Create a new position relative to the given box
- Position( int left, int top, int right, int bottom,
- const GenericRect &rRect,
- Ref_t refLeftTop, Ref_t refRightBottom,
- bool xKeepRatio, bool yKeepRatio );
- ~Position() {}
- /// Get the position relative to the left top corner of the box
- virtual int getLeft() const;
- virtual int getTop() const;
- int getRight() const;
- int getBottom() const;
- /// Get the size of the rectangle
- virtual int getWidth() const;
- virtual int getHeight() const;
- /// Get the reference corners
- Ref_t getRefLeftTop() const { return m_refLeftTop; }
- Ref_t getRefRightBottom() const { return m_refRighBottom; }
- private:
- /// Position and reference edge/corner
- int m_left;
- int m_top;
- int m_right;
- int m_bottom;
- const GenericRect &m_rRect;
- Ref_t m_refLeftTop;
- Ref_t m_refRighBottom;
- /// "Keep ratio" mode
- bool m_xKeepRatio;
- bool m_yKeepRatio;
- /// Initial width ratio (usually between 0 and 1)
- double m_xRatio;
- /// Initial height ratio (usually between 0 and 1)
- double m_yRatio;
- };
- typedef CountedPtr<Position> PositionPtr;
- /// Variable implementing the Box interface
- class VarBox: public Variable, public Box, public Subject<VarBox>
- {
- public:
- VarBox( intf_thread_t *pIntf, int width = 0, int height = 0 );
- virtual ~VarBox() {}
- /// Get the variable type
- virtual const string &getType() const { return m_type; }
- /// Get the size of the box
- virtual int getWidth() const;
- virtual int getHeight() const;
- /// Change the size of the box
- void setSize( int width, int height );
- private:
- /// Variable type
- static const string m_type;
- /// Size
- int m_width, m_height;
- };
- #endif