Qwt User's Guide: qwt_double_rect.h Source File

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# qwt_double_rect.h

    00001 /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
    00002  * Qwt Widget Library
    00003  * Copyright (C) 1997   Josef Wilgen
    00004  * Copyright (C) 2002   Uwe Rathmann
    00005  *
    00006  * This library is free software; you can redistribute it and/or
    00007  * modify it under the terms of the Qwt License, Version 1.0
    00008  *****************************************************************************/
    00009
    00010 #ifndef QWT_DOUBLE_RECT_H
    00011 #define QWT_DOUBLE_RECT_H 1
    00012
    00013 #include "qwt_global.h"
    00014 #include "qwt_array.h"
    00015
    00016 #if QT_VERSION >= 0x040000
    00017
    00018 #include <QPointF>
    00019 #include <QSizeF>
    00020 #include <QRectF>
    00021
    00022 typedef QPointF QwtDoublePoint;
    00023 typedef QSizeF QwtDoubleSize;
    00024 typedef QRectF QwtDoubleRect;
    00025
    00026 #else
    00027
    00028 #include <qpoint.h>
    00029 #include <qsize.h>
    00030 #include <qrect.h>
    00031
    00036 class QWT_EXPORT QwtDoublePoint
    00037 {
    00038 public:
    00039     QwtDoublePoint();
    00040     QwtDoublePoint(double x, double y);
    00041     QwtDoublePoint(const QPoint &);
    00042
    00043     QPoint toPoint() const;
    00044
    00045     bool isNull()    const;
    00046
    00047     double x() const;
    00048     double y() const;
    00049
    00050     double &rx();
    00051     double &ry();
    00052
    00053     void setX(double x);
    00054     void setY(double y);
    00055
    00056     bool operator==(const QwtDoublePoint &) const;
    00057     bool operator!=(const QwtDoublePoint &) const;
    00058
    00059     const QwtDoublePoint operator-() const;
    00060     const QwtDoublePoint operator+(const QwtDoublePoint &) const;
    00061     const QwtDoublePoint operator-(const QwtDoublePoint &) const;
    00062     const QwtDoublePoint operator*(double) const;
    00063     const QwtDoublePoint operator/(double) const;
    00064
    00065     QwtDoublePoint &operator+=(const QwtDoublePoint &);
    00066     QwtDoublePoint &operator-=(const QwtDoublePoint &);
    00067     QwtDoublePoint &operator*=(double);
    00068     QwtDoublePoint &operator/=(double);
    00069
    00070 private:
    00071     double d_x;
    00072     double d_y;
    00073 };
    00074
    00079 class QWT_EXPORT QwtDoubleSize
    00080 {
    00081 public:
    00082     QwtDoubleSize();
    00083     QwtDoubleSize(double width, double height);
    00084     QwtDoubleSize(const QSize &);
    00085
    00086     bool isNull() const;
    00087     bool isEmpty() const;
    00088     bool isValid() const;
    00089
    00090     double width() const;
    00091     double height() const;
    00092     void setWidth( double w );
    00093     void setHeight( double h );
    00094     void transpose();
    00095
    00096     QwtDoubleSize expandedTo(const QwtDoubleSize &) const;
    00097     QwtDoubleSize boundedTo(const QwtDoubleSize &) const;
    00098
    00099     bool operator==(const QwtDoubleSize &) const;
    00100     bool operator!=(const QwtDoubleSize &) const;
    00101
    00102     const QwtDoubleSize operator+(const QwtDoubleSize &) const;
    00103     const QwtDoubleSize operator-(const QwtDoubleSize &) const;
    00104     const QwtDoubleSize operator*(double) const;
    00105     const QwtDoubleSize operator/(double) const;
    00106
    00107     QwtDoubleSize &operator+=(const QwtDoubleSize &);
    00108     QwtDoubleSize &operator-=(const QwtDoubleSize &);
    00109     QwtDoubleSize &operator*=(double c);
    00110     QwtDoubleSize &operator/=(double c);
    00111
    00112 private:
    00113     double d_width;
    00114     double d_height;
    00115 };
    00116
    00121 class QWT_EXPORT QwtDoubleRect
    00122 {
    00123 public:
    00124     QwtDoubleRect();
    00125     QwtDoubleRect(double left, double top, double width, double height);
    00126     QwtDoubleRect(const QwtDoublePoint&, const QwtDoubleSize &);
    00127
    00128     bool isNull()    const;
    00129     bool isEmpty()   const;
    00130     bool isValid()   const;
    00131
    00132     QwtDoubleRect normalized() const;
    00133
    00134     double x()  const;
    00135     double y()  const;
    00136
    00137     double left()  const;
    00138     double right()  const;
    00139     double top()  const;
    00140     double bottom()  const;
    00141
    00142     void setX(double);
    00143     void setY(double);
    00144
    00145     void setLeft(double);
    00146     void setRight(double);
    00147     void setTop(double);
    00148     void setBottom(double);
    00149
    00150     QwtDoublePoint center()  const;
    00151
    00152     void moveLeft(double x);
    00153     void moveRight(double x);
    00154     void moveTop(double y );
    00155     void moveBottom(double y );
    00156     void moveTo(double x, double y);
    00157     void moveTo(const QwtDoublePoint &);
    00158     void moveBy(double dx, double dy);
    00159     void moveCenter(const QwtDoublePoint &);
    00160     void moveCenter(double dx, double dy);
    00161
    00162     void setRect(double x1, double x2, double width, double height);
    00163
    00164     double width()   const;
    00165     double height()  const;
    00166     QwtDoubleSize size() const;
    00167
    00168     void setWidth(double w );
    00169     void setHeight(double h );
    00170     void setSize(const QwtDoubleSize &);
    00171
    00172     QwtDoubleRect  operator|(const QwtDoubleRect &r) const;
    00173     QwtDoubleRect  operator&(const QwtDoubleRect &r) const;
    00174     QwtDoubleRect &operator|=(const QwtDoubleRect &r);
    00175     QwtDoubleRect &operator&=(const QwtDoubleRect &r);
    00176     bool operator==( const QwtDoubleRect &) const;
    00177     bool operator!=( const QwtDoubleRect &) const;
    00178
    00179     bool contains(const QwtDoublePoint &p, bool proper = false) const;
    00180     bool contains(double x, double y, bool proper = false) const;
    00181     bool contains(const QwtDoubleRect &r, bool proper=false) const;
    00182
    00183     QwtDoubleRect unite(const QwtDoubleRect &) const;
    00184     QwtDoubleRect intersect(const QwtDoubleRect &) const;
    00185     bool intersects(const QwtDoubleRect &) const;
    00186
    00187 private:
    00188     double d_left;
    00189     double d_right;
    00190     double d_top;
    00191     double d_bottom;
    00192 };
    00193
    00200 inline bool QwtDoublePoint::isNull() const
    00201 {
    00202     return d_x == 0.0 && d_y == 0.0;
    00203 }
    00204
    00206 inline double QwtDoublePoint::x() const
    00207 {
    00208     return d_x;
    00209 }
    00210
    00212 inline double QwtDoublePoint::y() const
    00213 {
    00214     return d_y;
    00215 }
    00216
    00218 inline double &QwtDoublePoint::rx()
    00219 {
    00220     return d_x;
    00221 }
    00222
    00224 inline double &QwtDoublePoint::ry()
    00225 {
    00226     return d_y;
    00227 }
    00228
    00230 inline void QwtDoublePoint::setX(double x)
    00231 {
    00232     d_x = x;
    00233 }
    00234
    00236 inline void QwtDoublePoint::setY(double y)
    00237 {
    00238     d_y = y;
    00239 }
    00240
    00245 inline QPoint QwtDoublePoint::toPoint() const
    00246 {
    00247     return QPoint(qRound(d_x), qRound(d_y));
    00248 }
    00249
    00254 inline bool QwtDoubleSize::isNull() const
    00255 {
    00256     return d_width == 0.0 && d_height == 0.0;
    00257 }
    00258
    00263 inline bool QwtDoubleSize::isEmpty() const
    00264 {
    00265     return d_width <= 0.0 || d_height <= 0.0;
    00266 }
    00267
    00272 inline bool QwtDoubleSize::isValid() const
    00273 {
    00274     return d_width >= 0.0 && d_height >= 0.0;
    00275 }
    00276
    00278 inline double QwtDoubleSize::width() const
    00279 {
    00280     return d_width;
    00281 }
    00282
    00284 inline double QwtDoubleSize::height() const
    00285 {
    00286     return d_height;
    00287 }
    00288
    00290 inline void QwtDoubleSize::setWidth(double width)
    00291 {
    00292     d_width = width;
    00293 }
    00294
    00296 inline void QwtDoubleSize::setHeight(double height)
    00297 {
    00298     d_height = height;
    00299 }
    00300
    00308 inline bool QwtDoubleRect::isNull() const
    00309 {
    00310     return d_right == d_left && d_bottom == d_top;
    00311 }
    00312
    00320 inline bool QwtDoubleRect::isEmpty() const
    00321 {
    00322     return d_left >= d_right || d_top >= d_bottom;
    00323 }
    00324
    00333 inline bool QwtDoubleRect::isValid() const
    00334 {
    00335     return d_left < d_right && d_top < d_bottom;
    00336 }
    00337
    00339 inline double QwtDoubleRect::x() const
    00340 {
    00341     return d_left;
    00342 }
    00343
    00345 inline double QwtDoubleRect::y() const
    00346 {
    00347     return d_top;
    00348 }
    00349
    00351 inline double QwtDoubleRect::left() const
    00352 {
    00353     return d_left;
    00354 }
    00355
    00357 inline double QwtDoubleRect::right() const
    00358 {
    00359     return d_right;
    00360 }
    00361
    00363 inline double QwtDoubleRect::top() const
    00364 {
    00365     return d_top;
    00366 }
    00367
    00369 inline double QwtDoubleRect::bottom() const
    00370 {
    00371     return d_bottom;
    00372 }
    00373
    00375 inline void QwtDoubleRect::setX(double x)
    00376 {
    00377     d_left = x;
    00378 }
    00379
    00381 inline void QwtDoubleRect::setY(double y)
    00382 {
    00383     d_top = y;
    00384 }
    00385
    00387 inline void QwtDoubleRect::setLeft(double x)
    00388 {
    00389     d_left = x;
    00390 }
    00391
    00393 inline void QwtDoubleRect::setRight(double x)
    00394 {
    00395     d_right = x;
    00396 }
    00397
    00399 inline void QwtDoubleRect::setTop(double y)
    00400 {
    00401     d_top = y;
    00402 }
    00403
    00405 inline void QwtDoubleRect::setBottom(double y)
    00406 {
    00407     d_bottom = y;
    00408 }
    00409
    00411 inline double QwtDoubleRect::width() const
    00412 {
    00413     return  d_right - d_left;
    00414 }
    00415
    00417 inline double QwtDoubleRect::height() const
    00418 {
    00419     return  d_bottom - d_top;
    00420 }
    00421
    00423 inline QwtDoubleSize QwtDoubleRect::size() const
    00424 {
    00425     return QwtDoubleSize(width(), height());
    00426 }
    00427
    00429 inline void QwtDoubleRect::setWidth(double w)
    00430 {
    00431     d_right = d_left + w;
    00432 }
    00433
    00435 inline void QwtDoubleRect::setHeight(double h)
    00436 {
    00437     d_bottom = d_top + h;
    00438 }
    00439
    00444 inline void QwtDoubleRect::moveTo(const QwtDoublePoint &p)
    00445 {
    00446     moveTo(p.x(), p.y());
    00447 }
    00448
    00449 #endif // QT_VERSION < 0x040000
    00450
    00451 #endif // QWT_DOUBLE_RECT_H