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src/qt/src/kernel/qpoint.h
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00001 /****************************************************************************
00002 ** $Id: qt/qpoint.h   3.3.8   edited Jan 11 14:38 $
00003 **
00004 ** Definition of QPoint class
00005 **
00006 ** Created : 931028
00007 **
00008 ** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
00009 **
00010 ** This file is part of the kernel module of the Qt GUI Toolkit.
00011 **
00012 ** This file may be distributed under the terms of the Q Public License
00013 ** as defined by Trolltech ASA of Norway and appearing in the file
00014 ** LICENSE.QPL included in the packaging of this file.
00015 **
00016 ** This file may be distributed and/or modified under the terms of the
00017 ** GNU General Public License version 2 as published by the Free Software
00018 ** Foundation and appearing in the file LICENSE.GPL included in the
00019 ** packaging of this file.
00020 **
00021 ** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
00022 ** licenses may use this file in accordance with the Qt Commercial License
00023 ** Agreement provided with the Software.
00024 **
00025 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
00026 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
00027 **
00028 ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
00029 **   information about Qt Commercial License Agreements.
00030 ** See http://www.trolltech.com/qpl/ for QPL licensing information.
00031 ** See http://www.trolltech.com/gpl/ for GPL licensing information.
00032 **
00033 ** Contact info@trolltech.com if any conditions of this licensing are
00034 ** not clear to you.
00035 **
00036 **********************************************************************/
00037 
00038 #ifndef QPOINT_H
00039 #define QPOINT_H
00040 
00041 #ifndef QT_H
00042 #include "qwindowdefs.h"
00043 #endif // QT_H
00044 
00045 
00046 class Q_EXPORT QPoint
00047 {
00048 public:
00049     QPoint();
00050     QPoint( int xpos, int ypos );
00051 
00052     bool   isNull()     const;
00053 
00054     int    x()          const;
00055     int    y()          const;
00056     void   setX( int x );
00057     void   setY( int y );
00058 
00059     int manhattanLength() const;
00060 
00061     QCOORD &rx();
00062     QCOORD &ry();
00063 
00064     QPoint &operator+=( const QPoint &p );
00065     QPoint &operator-=( const QPoint &p );
00066     QPoint &operator*=( int c );
00067     QPoint &operator*=( double c );
00068     QPoint &operator/=( int c );
00069     QPoint &operator/=( double c );
00070 
00071     friend inline bool   operator==( const QPoint &, const QPoint & );
00072     friend inline bool   operator!=( const QPoint &, const QPoint & );
00073     friend inline const QPoint operator+( const QPoint &, const QPoint & );
00074     friend inline const QPoint operator-( const QPoint &, const QPoint & );
00075     friend inline const QPoint operator*( const QPoint &, int );
00076     friend inline const QPoint operator*( int, const QPoint & );
00077     friend inline const QPoint operator*( const QPoint &, double );
00078     friend inline const QPoint operator*( double, const QPoint & );
00079     friend inline const QPoint operator-( const QPoint & );
00080     friend inline const QPoint operator/( const QPoint &, int );
00081     friend inline const QPoint operator/( const QPoint &, double );
00082 
00083 private:
00084     static void warningDivByZero();
00085 
00086 #if defined(Q_OS_MAC)
00087     QCOORD yp;
00088     QCOORD xp;
00089 #else
00090     QCOORD xp;
00091     QCOORD yp;
00092 #endif
00093 };
00094 
00095 
00096 /*****************************************************************************
00097   QPoint stream functions
00098  *****************************************************************************/
00099 #ifndef QT_NO_DATASTREAM
00100 Q_EXPORT QDataStream &operator<<( QDataStream &, const QPoint & );
00101 Q_EXPORT QDataStream &operator>>( QDataStream &, QPoint & );
00102 #endif
00103 
00104 /*****************************************************************************
00105   QPoint inline functions
00106  *****************************************************************************/
00107 
00108 inline QPoint::QPoint()
00109 { xp=0; yp=0; }
00110 
00111 inline QPoint::QPoint( int xpos, int ypos )
00112 { xp=(QCOORD)xpos; yp=(QCOORD)ypos; }
00113 
00114 inline bool QPoint::isNull() const
00115 { return xp == 0 && yp == 0; }
00116 
00117 inline int QPoint::x() const
00118 { return xp; }
00119 
00120 inline int QPoint::y() const
00121 { return yp; }
00122 
00123 inline void QPoint::setX( int x )
00124 { xp = (QCOORD)x; }
00125 
00126 inline void QPoint::setY( int y )
00127 { yp = (QCOORD)y; }
00128 
00129 inline QCOORD &QPoint::rx()
00130 { return xp; }
00131 
00132 inline QCOORD &QPoint::ry()
00133 { return yp; }
00134 
00135 inline QPoint &QPoint::operator+=( const QPoint &p )
00136 { xp+=p.xp; yp+=p.yp; return *this; }
00137 
00138 inline QPoint &QPoint::operator-=( const QPoint &p )
00139 { xp-=p.xp; yp-=p.yp; return *this; }
00140 
00141 inline QPoint &QPoint::operator*=( int c )
00142 { xp*=(QCOORD)c; yp*=(QCOORD)c; return *this; }
00143 
00144 inline QPoint &QPoint::operator*=( double c )
00145 { xp=(QCOORD)(xp*c); yp=(QCOORD)(yp*c); return *this; }
00146 
00147 inline bool operator==( const QPoint &p1, const QPoint &p2 )
00148 { return p1.xp == p2.xp && p1.yp == p2.yp; }
00149 
00150 inline bool operator!=( const QPoint &p1, const QPoint &p2 )
00151 { return p1.xp != p2.xp || p1.yp != p2.yp; }
00152 
00153 inline const QPoint operator+( const QPoint &p1, const QPoint &p2 )
00154 { return QPoint(p1.xp+p2.xp, p1.yp+p2.yp); }
00155 
00156 inline const QPoint operator-( const QPoint &p1, const QPoint &p2 )
00157 { return QPoint(p1.xp-p2.xp, p1.yp-p2.yp); }
00158 
00159 inline const QPoint operator*( const QPoint &p, int c )
00160 { return QPoint(p.xp*c, p.yp*c); }
00161 
00162 inline const QPoint operator*( int c, const QPoint &p )
00163 { return QPoint(p.xp*c, p.yp*c); }
00164 
00165 inline const QPoint operator*( const QPoint &p, double c )
00166 { return QPoint((QCOORD)(p.xp*c), (QCOORD)(p.yp*c)); }
00167 
00168 inline const QPoint operator*( double c, const QPoint &p )
00169 { return QPoint((QCOORD)(p.xp*c), (QCOORD)(p.yp*c)); }
00170 
00171 inline const QPoint operator-( const QPoint &p )
00172 { return QPoint(-p.xp, -p.yp); }
00173 
00174 inline QPoint &QPoint::operator/=( int c )
00175 {
00176 #if defined(QT_CHECK_MATH)
00177     if ( c == 0 )
00178         warningDivByZero();
00179 #endif
00180     xp/=(QCOORD)c;
00181     yp/=(QCOORD)c;
00182     return *this;
00183 }
00184 
00185 inline QPoint &QPoint::operator/=( double c )
00186 {
00187 #if defined(QT_CHECK_MATH)
00188     if ( c == 0.0 )
00189         warningDivByZero();
00190 #endif
00191     xp=(QCOORD)(xp/c);
00192     yp=(QCOORD)(yp/c);
00193     return *this;
00194 }
00195 
00196 inline const QPoint operator/( const QPoint &p, int c )
00197 {
00198 #if defined(QT_CHECK_MATH)
00199     if ( c == 0 )
00200         QPoint::warningDivByZero();
00201 #endif
00202     return QPoint(p.xp/c, p.yp/c);
00203 }
00204 
00205 inline const QPoint operator/( const QPoint &p, double c )
00206 {
00207 #if defined(QT_CHECK_MATH)
00208     if ( c == 0.0 )
00209         QPoint::warningDivByZero();
00210 #endif
00211     return QPoint((QCOORD)(p.xp/c), (QCOORD)(p.yp/c));
00212 }
00213 
00214 #define Q_DEFINED_QPOINT
00215 #include "qwinexport.h"
00216 #endif // QPOINT_H
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