Qwt User's Guide  5.2.3
qwt_double_rect.h
1 /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
2  * Qwt Widget Library
3  * Copyright (C) 1997 Josef Wilgen
4  * Copyright (C) 2002 Uwe Rathmann
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the Qwt License, Version 1.0
8  *****************************************************************************/
9 
11 #ifndef QWT_DOUBLE_RECT_H
12 #define QWT_DOUBLE_RECT_H 1
13 
14 #include "qwt_global.h"
15 #include "qwt_array.h"
16 
17 #if QT_VERSION >= 0x040000
18 
19 #include <QPointF>
20 #include <QSizeF>
21 #include <QRectF>
22 
29 typedef QPointF QwtDoublePoint;
30 
37 typedef QSizeF QwtDoubleSize;
38 
45 typedef QRectF QwtDoubleRect;
46 
47 #else
48 
49 #include <qpoint.h>
50 #include <qsize.h>
51 #include <qrect.h>
52 
57 class QWT_EXPORT QwtDoublePoint
58 {
59 public:
60  QwtDoublePoint();
61  QwtDoublePoint(double x, double y);
62  QwtDoublePoint(const QPoint &);
63 
64  QPoint toPoint() const;
65 
66  bool isNull() const;
67 
68  double x() const;
69  double y() const;
70 
71  double &rx();
72  double &ry();
73 
74  void setX(double x);
75  void setY(double y);
76 
77  bool operator==(const QwtDoublePoint &) const;
78  bool operator!=(const QwtDoublePoint &) const;
79 
80  const QwtDoublePoint operator-() const;
81  const QwtDoublePoint operator+(const QwtDoublePoint &) const;
82  const QwtDoublePoint operator-(const QwtDoublePoint &) const;
83  const QwtDoublePoint operator*(double) const;
84  const QwtDoublePoint operator/(double) const;
85 
86  QwtDoublePoint &operator+=(const QwtDoublePoint &);
87  QwtDoublePoint &operator-=(const QwtDoublePoint &);
88  QwtDoublePoint &operator*=(double);
89  QwtDoublePoint &operator/=(double);
90 
91 private:
92  double d_x;
93  double d_y;
94 };
95 
100 class QWT_EXPORT QwtDoubleSize
101 {
102 public:
103  QwtDoubleSize();
104  QwtDoubleSize(double width, double height);
105  QwtDoubleSize(const QSize &);
106 
107  bool isNull() const;
108  bool isEmpty() const;
109  bool isValid() const;
110 
111  double width() const;
112  double height() const;
113  void setWidth( double w );
114  void setHeight( double h );
115  void transpose();
116 
117  QwtDoubleSize expandedTo(const QwtDoubleSize &) const;
118  QwtDoubleSize boundedTo(const QwtDoubleSize &) const;
119 
120  bool operator==(const QwtDoubleSize &) const;
121  bool operator!=(const QwtDoubleSize &) const;
122 
123  const QwtDoubleSize operator+(const QwtDoubleSize &) const;
124  const QwtDoubleSize operator-(const QwtDoubleSize &) const;
125  const QwtDoubleSize operator*(double) const;
126  const QwtDoubleSize operator/(double) const;
127 
128  QwtDoubleSize &operator+=(const QwtDoubleSize &);
129  QwtDoubleSize &operator-=(const QwtDoubleSize &);
130  QwtDoubleSize &operator*=(double c);
131  QwtDoubleSize &operator/=(double c);
132 
133 private:
134  double d_width;
135  double d_height;
136 };
137 
142 class QWT_EXPORT QwtDoubleRect
143 {
144 public:
145  QwtDoubleRect();
146  QwtDoubleRect(double left, double top, double width, double height);
147  QwtDoubleRect(const QwtDoublePoint&, const QwtDoubleSize &);
148 
149  QwtDoubleRect(const QRect &);
150  QRect toRect() const;
151 
152  bool isNull() const;
153  bool isEmpty() const;
154  bool isValid() const;
155 
156  QwtDoubleRect normalized() const;
157 
158  double x() const;
159  double y() const;
160 
161  double left() const;
162  double right() const;
163  double top() const;
164  double bottom() const;
165 
166  void setX(double);
167  void setY(double);
168 
169  void setLeft(double);
170  void setRight(double);
171  void setTop(double);
172  void setBottom(double);
173 
174  QwtDoublePoint center() const;
175 
176  void moveLeft(double x);
177  void moveRight(double x);
178  void moveTop(double y );
179  void moveBottom(double y );
180  void moveTo(double x, double y);
181  void moveTo(const QwtDoublePoint &);
182  void moveBy(double dx, double dy);
183  void moveCenter(const QwtDoublePoint &);
184  void moveCenter(double dx, double dy);
185 
186  void setRect(double x1, double x2, double width, double height);
187 
188  double width() const;
189  double height() const;
190  QwtDoubleSize size() const;
191 
192  void setWidth(double w );
193  void setHeight(double h );
194  void setSize(const QwtDoubleSize &);
195 
196  QwtDoubleRect operator|(const QwtDoubleRect &r) const;
197  QwtDoubleRect operator&(const QwtDoubleRect &r) const;
198  QwtDoubleRect &operator|=(const QwtDoubleRect &r);
199  QwtDoubleRect &operator&=(const QwtDoubleRect &r);
200  bool operator==( const QwtDoubleRect &) const;
201  bool operator!=( const QwtDoubleRect &) const;
202 
203  bool contains(const QwtDoublePoint &p, bool proper = false) const;
204  bool contains(double x, double y, bool proper = false) const;
205  bool contains(const QwtDoubleRect &r, bool proper=false) const;
206 
207  QwtDoubleRect unite(const QwtDoubleRect &) const;
208  QwtDoubleRect intersect(const QwtDoubleRect &) const;
209  bool intersects(const QwtDoubleRect &) const;
210 
211  QwtDoublePoint bottomRight() const;
212  QwtDoublePoint topRight() const;
213  QwtDoublePoint topLeft() const;
214  QwtDoublePoint bottomLeft() const;
215 
216 private:
217  double d_left;
218  double d_right;
219  double d_top;
220  double d_bottom;
221 };
222 
229 inline bool QwtDoublePoint::isNull() const
230 {
231  return d_x == 0.0 && d_y == 0.0;
232 }
233 
235 inline double QwtDoublePoint::x() const
236 {
237  return d_x;
238 }
239 
241 inline double QwtDoublePoint::y() const
242 {
243  return d_y;
244 }
245 
247 inline double &QwtDoublePoint::rx()
248 {
249  return d_x;
250 }
251 
253 inline double &QwtDoublePoint::ry()
254 {
255  return d_y;
256 }
257 
259 inline void QwtDoublePoint::setX(double x)
260 {
261  d_x = x;
262 }
263 
265 inline void QwtDoublePoint::setY(double y)
266 {
267  d_y = y;
268 }
269 
274 inline QPoint QwtDoublePoint::toPoint() const
275 {
276  return QPoint(qRound(d_x), qRound(d_y));
277 }
278 
283 inline bool QwtDoubleSize::isNull() const
284 {
285  return d_width == 0.0 && d_height == 0.0;
286 }
287 
292 inline bool QwtDoubleSize::isEmpty() const
293 {
294  return d_width <= 0.0 || d_height <= 0.0;
295 }
296 
301 inline bool QwtDoubleSize::isValid() const
302 {
303  return d_width >= 0.0 && d_height >= 0.0;
304 }
305 
307 inline double QwtDoubleSize::width() const
308 {
309  return d_width;
310 }
311 
313 inline double QwtDoubleSize::height() const
314 {
315  return d_height;
316 }
317 
319 inline void QwtDoubleSize::setWidth(double width)
320 {
321  d_width = width;
322 }
323 
325 inline void QwtDoubleSize::setHeight(double height)
326 {
327  d_height = height;
328 }
329 
337 inline bool QwtDoubleRect::isNull() const
338 {
339  return d_right == d_left && d_bottom == d_top;
340 }
341 
349 inline bool QwtDoubleRect::isEmpty() const
350 {
351  return d_left >= d_right || d_top >= d_bottom;
352 }
353 
362 inline bool QwtDoubleRect::isValid() const
363 {
364  return d_left < d_right && d_top < d_bottom;
365 }
366 
368 inline double QwtDoubleRect::x() const
369 {
370  return d_left;
371 }
372 
374 inline double QwtDoubleRect::y() const
375 {
376  return d_top;
377 }
378 
380 inline double QwtDoubleRect::left() const
381 {
382  return d_left;
383 }
384 
386 inline double QwtDoubleRect::right() const
387 {
388  return d_right;
389 }
390 
392 inline double QwtDoubleRect::top() const
393 {
394  return d_top;
395 }
396 
398 inline double QwtDoubleRect::bottom() const
399 {
400  return d_bottom;
401 }
402 
404 inline void QwtDoubleRect::setX(double x)
405 {
406  d_left = x;
407 }
408 
410 inline void QwtDoubleRect::setY(double y)
411 {
412  d_top = y;
413 }
414 
416 inline void QwtDoubleRect::setLeft(double x)
417 {
418  d_left = x;
419 }
420 
422 inline void QwtDoubleRect::setRight(double x)
423 {
424  d_right = x;
425 }
426 
428 inline void QwtDoubleRect::setTop(double y)
429 {
430  d_top = y;
431 }
432 
434 inline void QwtDoubleRect::setBottom(double y)
435 {
436  d_bottom = y;
437 }
438 
440 inline double QwtDoubleRect::width() const
441 {
442  return d_right - d_left;
443 }
444 
446 inline double QwtDoubleRect::height() const
447 {
448  return d_bottom - d_top;
449 }
450 
452 inline QwtDoubleSize QwtDoubleRect::size() const
453 {
454  return QwtDoubleSize(width(), height());
455 }
456 
458 inline void QwtDoubleRect::setWidth(double w)
459 {
460  d_right = d_left + w;
461 }
462 
464 inline void QwtDoubleRect::setHeight(double h)
465 {
466  d_bottom = d_top + h;
467 }
468 
473 inline void QwtDoubleRect::moveTo(const QwtDoublePoint &p)
474 {
475  moveTo(p.x(), p.y());
476 }
477 
478 inline QwtDoublePoint QwtDoubleRect::bottomRight() const
479 {
480  return QwtDoublePoint(bottom(), right());
481 }
482 
483 inline QwtDoublePoint QwtDoubleRect::topRight() const
484 {
485  return QwtDoublePoint(top(), right());
486 }
487 
488 inline QwtDoublePoint QwtDoubleRect::topLeft() const
489 {
490  return QwtDoublePoint(top(), left());
491 }
492 
493 inline QwtDoublePoint QwtDoubleRect::bottomLeft() const
494 {
495  return QwtDoublePoint(bottom(), left());
496 }
497 
498 
499 #endif // QT_VERSION < 0x040000
500 
501 #endif // QWT_DOUBLE_RECT_H
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