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# qpoint.h

Go to the documentation of this file.

    00001 /****************************************************************************
    00002 **
    00003 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
    00004 ** All rights reserved.
    00005 ** Contact: Nokia Corporation (qt-info@nokia.com)
    00006 **
    00007 ** This file is part of the QtCore module of the Qt Toolkit.
    00008 **
    00009 ** $QT_BEGIN_LICENSE:LGPL$
    00010 ** Commercial Usage
    00011 ** Licensees holding valid Qt Commercial licenses may use this file in
    00012 ** accordance with the Qt Commercial License Agreement provided with the
    00013 ** Software or, alternatively, in accordance with the terms contained in
    00014 ** a written agreement between you and Nokia.
    00015 **
    00016 ** GNU Lesser General Public License Usage
    00017 ** Alternatively, this file may be used under the terms of the GNU Lesser
    00018 ** General Public License version 2.1 as published by the Free Software
    00019 ** Foundation and appearing in the file LICENSE.LGPL included in the
    00020 ** packaging of this file.  Please review the following information to
    00021 ** ensure the GNU Lesser General Public License version 2.1 requirements
    00022 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
    00023 **
    00024 ** In addition, as a special exception, Nokia gives you certain additional
    00025 ** rights.  These rights are described in the Nokia Qt LGPL Exception
    00026 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this module.
    00027 **
    00028 ** GNU General Public License Usage
    00029 ** Alternatively, this file may be used under the terms of the GNU
    00030 ** General Public License version 3.0 as published by the Free Software
    00031 ** Foundation and appearing in the file LICENSE.GPL included in the
    00032 ** packaging of this file.  Please review the following information to
    00033 ** ensure the GNU General Public License version 3.0 requirements will be
    00034 ** met: http://www.gnu.org/copyleft/gpl.html.
    00035 **
    00036 ** If you have questions regarding the use of this file, please contact
    00037 ** Nokia at qt-info@nokia.com.
    00038 ** $QT_END_LICENSE$
    00039 **
    00040 ****************************************************************************/
    00041
    00042 #ifndef QPOINT_H
    00043 #define QPOINT_H
    00044
    00045 #include <QtCore/qnamespace.h>
    00046
    00047 QT_BEGIN_HEADER
    00048
    00049 QT_BEGIN_NAMESPACE
    00050
    00051 QT_MODULE(Core)
    00052
    00053 class Q_CORE_EXPORT QPoint
    00054 {
    00055 public:
    00056     QPoint();
    00057     QPoint(int xpos, int ypos);
    00058
    00059     bool isNull() const;
    00060
    00061     int x() const;
    00062     int y() const;
    00063     void setX(int x);
    00064     void setY(int y);
    00065
    00066     int manhattanLength() const;
    00067
    00068     int &rx();
    00069     int &ry();
    00070
    00071     QPoint &operator+=(const QPoint &p);
    00072     QPoint &operator-=(const QPoint &p);
    00073     QPoint &operator*=(qreal c);
    00074     QPoint &operator/=(qreal c);
    00075
    00076     friend inline bool operator==(const QPoint &, const QPoint &);
    00077     friend inline bool operator!=(const QPoint &, const QPoint &);
    00078     friend inline const QPoint operator+(const QPoint &, const QPoint &);
    00079     friend inline const QPoint operator-(const QPoint &, const QPoint &);
    00080     friend inline const QPoint operator*(const QPoint &, qreal);
    00081     friend inline const QPoint operator*(qreal, const QPoint &);
    00082     friend inline const QPoint operator-(const QPoint &);
    00083     friend inline const QPoint operator/(const QPoint &, qreal);
    00084
    00085 private:
    00086     friend class QTransform;
    00087     // ### Qt 5;  remove the ifdef and just have the same order on all platforms.
    00088 #if defined(Q_OS_MAC)
    00089     int yp;
    00090     int xp;
    00091 #else
    00092     int xp;
    00093     int yp;
    00094 #endif
    00095 };
    00096
    00097 Q_DECLARE_TYPEINFO(QPoint, Q_MOVABLE_TYPE);
    00098
    00099 /*****************************************************************************
    00100   QPoint stream functions
    00101  *****************************************************************************/
    00102 #ifndef QT_NO_DATASTREAM
    00103 Q_CORE_EXPORT QDataStream &operator<<(QDataStream &, const QPoint &);
    00104 Q_CORE_EXPORT QDataStream &operator>>(QDataStream &, QPoint &);
    00105 #endif
    00106
    00107 /*****************************************************************************
    00108   QPoint inline functions
    00109  *****************************************************************************/
    00110
    00111 inline QPoint::QPoint()
    00112 { xp=0; yp=0; }
    00113
    00114 inline QPoint::QPoint(int xpos, int ypos)
    00115 { xp = xpos; yp = ypos; }
    00116
    00117 inline bool QPoint::isNull() const
    00118 { return xp == 0 && yp == 0; }
    00119
    00120 inline int QPoint::x() const
    00121 { return xp; }
    00122
    00123 inline int QPoint::y() const
    00124 { return yp; }
    00125
    00126 inline void QPoint::setX(int xpos)
    00127 { xp = xpos; }
    00128
    00129 inline void QPoint::setY(int ypos)
    00130 { yp = ypos; }
    00131
    00132 inline int &QPoint::rx()
    00133 { return xp; }
    00134
    00135 inline int &QPoint::ry()
    00136 { return yp; }
    00137
    00138 inline QPoint &QPoint::operator+=(const QPoint &p)
    00139 { xp+=p.xp; yp+=p.yp; return *this; }
    00140
    00141 inline QPoint &QPoint::operator-=(const QPoint &p)
    00142 { xp-=p.xp; yp-=p.yp; return *this; }
    00143
    00144 inline QPoint &QPoint::operator*=(qreal c)
    00145 { xp = qRound(xp*c); yp = qRound(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, qreal c)
    00160 { return QPoint(qRound(p.xp*c), qRound(p.yp*c)); }
    00161
    00162 inline const QPoint operator*(qreal c, const QPoint &p)
    00163 { return QPoint(qRound(p.xp*c), qRound(p.yp*c)); }
    00164
    00165 inline const QPoint operator-(const QPoint &p)
    00166 { return QPoint(-p.xp, -p.yp); }
    00167
    00168 inline QPoint &QPoint::operator/=(qreal c)
    00169 {
    00170     xp = qRound(xp/c);
    00171     yp = qRound(yp/c);
    00172     return *this;
    00173 }
    00174
    00175 inline const QPoint operator/(const QPoint &p, qreal c)
    00176 {
    00177     return QPoint(qRound(p.xp/c), qRound(p.yp/c));
    00178 }
    00179
    00180 #ifndef QT_NO_DEBUG_STREAM
    00181 Q_CORE_EXPORT QDebug operator<<(QDebug, const QPoint &);
    00182 #endif
    00183
    00184
    00185
    00186
    00187
    00188 class Q_CORE_EXPORT QPointF
    00189 {
    00190 public:
    00191     QPointF();
    00192     QPointF(const QPoint &p);
    00193     QPointF(qreal xpos, qreal ypos);
    00194
    00195     qreal manhattanLength() const;
    00196
    00197     bool isNull() const;
    00198
    00199     qreal x() const;
    00200     qreal y() const;
    00201     void setX(qreal x);
    00202     void setY(qreal y);
    00203
    00204     qreal &rx();
    00205     qreal &ry();
    00206
    00207     QPointF &operator+=(const QPointF &p);
    00208     QPointF &operator-=(const QPointF &p);
    00209     QPointF &operator*=(qreal c);
    00210     QPointF &operator/=(qreal c);
    00211
    00212     friend inline bool operator==(const QPointF &, const QPointF &);
    00213     friend inline bool operator!=(const QPointF &, const QPointF &);
    00214     friend inline const QPointF operator+(const QPointF &, const QPointF &);
    00215     friend inline const QPointF operator-(const QPointF &, const QPointF &);
    00216     friend inline const QPointF operator*(qreal, const QPointF &);
    00217     friend inline const QPointF operator*(const QPointF &, qreal);
    00218     friend inline const QPointF operator-(const QPointF &);
    00219     friend inline const QPointF operator/(const QPointF &, qreal);
    00220
    00221     QPoint toPoint() const;
    00222
    00223 private:
    00224     friend class QMatrix;
    00225     friend class QTransform;
    00226
    00227     qreal xp;
    00228     qreal yp;
    00229 };
    00230
    00231 Q_DECLARE_TYPEINFO(QPointF, Q_MOVABLE_TYPE);
    00232
    00233 /*****************************************************************************
    00234   QPointF stream functions
    00235  *****************************************************************************/
    00236 #ifndef QT_NO_DATASTREAM
    00237 Q_CORE_EXPORT QDataStream &operator<<(QDataStream &, const QPointF &);
    00238 Q_CORE_EXPORT QDataStream &operator>>(QDataStream &, QPointF &);
    00239 #endif
    00240
    00241 /*****************************************************************************
    00242   QPointF inline functions
    00243  *****************************************************************************/
    00244
    00245 inline QPointF::QPointF() : xp(0), yp(0) { }
    00246
    00247 inline QPointF::QPointF(qreal xpos, qreal ypos) : xp(xpos), yp(ypos) { }
    00248
    00249 inline QPointF::QPointF(const QPoint &p) : xp(p.x()), yp(p.y()) { }
    00250
    00251 inline bool QPointF::isNull() const
    00252 {
    00253     return qIsNull(xp) && qIsNull(yp);
    00254 }
    00255
    00256 inline qreal QPointF::x() const
    00257 {
    00258     return xp;
    00259 }
    00260
    00261 inline qreal QPointF::y() const
    00262 {
    00263     return yp;
    00264 }
    00265
    00266 inline void QPointF::setX(qreal xpos)
    00267 {
    00268     xp = xpos;
    00269 }
    00270
    00271 inline void QPointF::setY(qreal ypos)
    00272 {
    00273     yp = ypos;
    00274 }
    00275
    00276 inline qreal &QPointF::rx()
    00277 {
    00278     return xp;
    00279 }
    00280
    00281 inline qreal &QPointF::ry()
    00282 {
    00283     return yp;
    00284 }
    00285
    00286 inline QPointF &QPointF::operator+=(const QPointF &p)
    00287 {
    00288     xp+=p.xp;
    00289     yp+=p.yp;
    00290     return *this;
    00291 }
    00292
    00293 inline QPointF &QPointF::operator-=(const QPointF &p)
    00294 {
    00295     xp-=p.xp; yp-=p.yp; return *this;
    00296 }
    00297
    00298 inline QPointF &QPointF::operator*=(qreal c)
    00299 {
    00300     xp*=c; yp*=c; return *this;
    00301 }
    00302
    00303 inline bool operator==(const QPointF &p1, const QPointF &p2)
    00304 {
    00305     return qFuzzyIsNull(p1.xp - p2.xp) && qFuzzyIsNull(p1.yp - p2.yp);
    00306 }
    00307
    00308 inline bool operator!=(const QPointF &p1, const QPointF &p2)
    00309 {
    00310     return !qFuzzyIsNull(p1.xp - p2.xp) || !qFuzzyIsNull(p1.yp - p2.yp);
    00311 }
    00312
    00313 inline const QPointF operator+(const QPointF &p1, const QPointF &p2)
    00314 {
    00315     return QPointF(p1.xp+p2.xp, p1.yp+p2.yp);
    00316 }
    00317
    00318 inline const QPointF operator-(const QPointF &p1, const QPointF &p2)
    00319 {
    00320     return QPointF(p1.xp-p2.xp, p1.yp-p2.yp);
    00321 }
    00322
    00323 inline const QPointF operator*(const QPointF &p, qreal c)
    00324 {
    00325     return QPointF(p.xp*c, p.yp*c);
    00326 }
    00327
    00328 inline const QPointF operator*(qreal c, const QPointF &p)
    00329 {
    00330     return QPointF(p.xp*c, p.yp*c);
    00331 }
    00332
    00333 inline const QPointF operator-(const QPointF &p)
    00334 {
    00335     return QPointF(-p.xp, -p.yp);
    00336 }
    00337
    00338 inline QPointF &QPointF::operator/=(qreal c)
    00339 {
    00340     xp/=c;
    00341     yp/=c;
    00342     return *this;
    00343 }
    00344
    00345 inline const QPointF operator/(const QPointF &p, qreal c)
    00346 {
    00347     return QPointF(p.xp/c, p.yp/c);
    00348 }
    00349
    00350 inline QPoint QPointF::toPoint() const
    00351 {
    00352     return QPoint(qRound(xp), qRound(yp));
    00353 }
    00354
    00355 #ifndef QT_NO_DEBUG_STREAM
    00356 Q_CORE_EXPORT QDebug operator<<(QDebug d, const QPointF &p);
    00357 #endif
    00358
    00359 QT_END_NAMESPACE
    00360
    00361 QT_END_HEADER
    00362
    00363 #endif // QPOINT_H