qpoint.cpp

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33-
34#include "qpoint.h"-
35#include "qdatastream.h"-
36-
37#include <private/qdebug_p.h>-
38-
39QT_BEGIN_NAMESPACE-
40-
41/*!-
42 \class QPoint-
43 \inmodule QtCore-
44 \ingroup painting-
45 \reentrant-
46-
47 \brief The QPoint class defines a point in the plane using integer-
48 precision.-
49-
50 A point is specified by a x coordinate and an y coordinate which-
51 can be accessed using the x() and y() functions. The isNull()-
52 function returns \c true if both x and y are set to 0. The-
53 coordinates can be set (or altered) using the setX() and setY()-
54 functions, or alternatively the rx() and ry() functions which-
55 return references to the coordinates (allowing direct-
56 manipulation).-
57-
58 Given a point \e p, the following statements are all equivalent:-
59-
60 \snippet code/src_corelib_tools_qpoint.cpp 0-
61-
62 A QPoint object can also be used as a vector: Addition and-
63 subtraction are defined as for vectors (each component is added-
64 separately). A QPoint object can also be divided or multiplied by-
65 an \c int or a \c qreal.-
66-
67 In addition, the QPoint class provides the manhattanLength()-
68 function which gives an inexpensive approximation of the length of-
69 the QPoint object interpreted as a vector. Finally, QPoint objects-
70 can be streamed as well as compared.-
71-
72 \sa QPointF, QPolygon-
73*/-
74-
75-
76/*****************************************************************************-
77 QPoint member functions-
78 *****************************************************************************/-
79-
80/*!-
81 \fn QPoint::QPoint()-
82-
83 Constructs a null point, i.e. with coordinates (0, 0)-
84-
85 \sa isNull()-
86*/-
87-
88/*!-
89 \fn QPoint::QPoint(int xpos, int ypos)-
90-
91 Constructs a point with the given coordinates (\a xpos, \a ypos).-
92-
93 \sa setX(), setY()-
94*/-
95-
96/*!-
97 \fn bool QPoint::isNull() const-
98-
99 Returns \c true if both the x and y coordinates are set to 0,-
100 otherwise returns \c false.-
101*/-
102-
103/*!-
104 \fn int QPoint::x() const-
105-
106 Returns the x coordinate of this point.-
107-
108 \sa setX(), rx()-
109*/-
110-
111/*!-
112 \fn int QPoint::y() const-
113-
114 Returns the y coordinate of this point.-
115-
116 \sa setY(), ry()-
117*/-
118-
119/*!-
120 \fn void QPoint::setX(int x)-
121-
122 Sets the x coordinate of this point to the given \a x coordinate.-
123-
124 \sa x(), setY()-
125*/-
126-
127/*!-
128 \fn void QPoint::setY(int y)-
129-
130 Sets the y coordinate of this point to the given \a y coordinate.-
131-
132 \sa y(), setX()-
133*/-
134-
135-
136/*!-
137 \fn int &QPoint::rx()-
138-
139 Returns a reference to the x coordinate of this point.-
140-
141 Using a reference makes it possible to directly manipulate x. For example:-
142-
143 \snippet code/src_corelib_tools_qpoint.cpp 1-
144-
145 \sa x(), setX()-
146*/-
147-
148/*!-
149 \fn int &QPoint::ry()-
150-
151 Returns a reference to the y coordinate of this point.-
152-
153 Using a reference makes it possible to directly manipulate y. For-
154 example:-
155-
156 \snippet code/src_corelib_tools_qpoint.cpp 2-
157-
158 \sa y(), setY()-
159*/-
160-
161-
162/*!-
163 \fn QPoint &QPoint::operator+=(const QPoint &point)-
164-
165 Adds the given \a point to this point and returns a reference to-
166 this point. For example:-
167-
168 \snippet code/src_corelib_tools_qpoint.cpp 3-
169-
170 \sa operator-=()-
171*/-
172-
173/*!-
174 \fn QPoint &QPoint::operator-=(const QPoint &point)-
175-
176 Subtracts the given \a point from this point and returns a-
177 reference to this point. For example:-
178-
179 \snippet code/src_corelib_tools_qpoint.cpp 4-
180-
181 \sa operator+=()-
182*/-
183-
184/*!-
185 \fn QPoint &QPoint::operator*=(float factor)-
186-
187 Multiplies this point's coordinates by the given \a factor, and-
188 returns a reference to this point.-
189-
190 Note that the result is rounded to the nearest integer as points are held as-
191 integers. Use QPointF for floating point accuracy.-
192-
193 \sa operator/=()-
194*/-
195-
196/*!-
197 \fn QPoint &QPoint::operator*=(double factor)-
198-
199 Multiplies this point's coordinates by the given \a factor, and-
200 returns a reference to this point. For example:-
201-
202 \snippet code/src_corelib_tools_qpoint.cpp 5-
203-
204 Note that the result is rounded to the nearest integer as points are held as-
205 integers. Use QPointF for floating point accuracy.-
206-
207 \sa operator/=()-
208*/-
209-
210/*!-
211 \fn QPoint &QPoint::operator*=(int factor)-
212-
213 Multiplies this point's coordinates by the given \a factor, and-
214 returns a reference to this point.-
215-
216 \sa operator/=()-
217*/-
218-
219/*!-
220 \fn static int QPoint::dotProduct(const QPoint &p1, const QPoint &p2)-
221 \since 5.1-
222-
223 \snippet code/src_corelib_tools_qpoint.cpp 16-
224-
225 Returns the dot product of \a p1 and \a p2.-
226*/-
227-
228/*!-
229 \fn bool operator==(const QPoint &p1, const QPoint &p2)-
230 \relates QPoint-
231-
232 Returns \c true if \a p1 and \a p2 are equal; otherwise returns-
233 false.-
234*/-
235-
236/*!-
237 \fn bool operator!=(const QPoint &p1, const QPoint &p2)-
238 \relates QPoint-
239-
240 Returns \c true if \a p1 and \a p2 are not equal; otherwise returns \c false.-
241*/-
242-
243/*!-
244 \fn const QPoint operator+(const QPoint &p1, const QPoint &p2)-
245 \relates QPoint-
246-
247 Returns a QPoint object that is the sum of the given points, \a p1-
248 and \a p2; each component is added separately.-
249-
250 \sa QPoint::operator+=()-
251*/-
252-
253/*!-
254 \fn const QPoint operator-(const QPoint &p1, const QPoint &p2)-
255 \relates QPoint-
256-
257 Returns a QPoint object that is formed by subtracting \a p2 from-
258 \a p1; each component is subtracted separately.-
259-
260 \sa QPoint::operator-=()-
261*/-
262-
263/*!-
264 \fn const QPoint operator*(const QPoint &point, float factor)-
265 \relates QPoint-
266-
267 Returns a copy of the given \a point multiplied by the given \a factor.-
268-
269 Note that the result is rounded to the nearest integer as points-
270 are held as integers. Use QPointF for floating point accuracy.-
271-
272 \sa QPoint::operator*=()-
273*/-
274-
275/*!-
276 \fn const QPoint operator*(const QPoint &point, double factor)-
277 \relates QPoint-
278-
279 Returns a copy of the given \a point multiplied by the given \a factor.-
280-
281 Note that the result is rounded to the nearest integer as points-
282 are held as integers. Use QPointF for floating point accuracy.-
283-
284 \sa QPoint::operator*=()-
285*/-
286-
287/*!-
288 \fn const QPoint operator*(const QPoint &point, int factor)-
289 \relates QPoint-
290-
291 Returns a copy of the given \a point multiplied by the given \a factor.-
292-
293 \sa QPoint::operator*=()-
294*/-
295-
296/*!-
297 \fn const QPoint operator*(float factor, const QPoint &point)-
298 \overload-
299 \relates QPoint-
300-
301 Returns a copy of the given \a point multiplied by the given \a factor.-
302-
303 Note that the result is rounded to the nearest integer as points-
304 are held as integers. Use QPointF for floating point accuracy.-
305-
306 \sa QPoint::operator*=()-
307*/-
308-
309/*!-
310 \fn const QPoint operator*(double factor, const QPoint &point)-
311 \overload-
312 \relates QPoint-
313-
314 Returns a copy of the given \a point multiplied by the given \a factor.-
315-
316 Note that the result is rounded to the nearest integer as points-
317 are held as integers. Use QPointF for floating point accuracy.-
318-
319 \sa QPoint::operator*=()-
320*/-
321-
322/*!-
323 \fn const QPoint operator*(int factor, const QPoint &point)-
324 \overload-
325 \relates QPoint-
326-
327 Returns a copy of the given \a point multiplied by the given \a factor.-
328-
329 \sa QPoint::operator*=()-
330*/-
331-
332/*!-
333 \fn const QPoint operator+(const QPoint &point)-
334 \relates QPoint-
335 \since 5.0-
336-
337 Returns \a point unmodified.-
338*/-
339-
340/*!-
341 \fn const QPoint operator-(const QPoint &point)-
342 \overload-
343 \relates QPoint-
344-
345 Returns a QPoint object that is formed by changing the sign of-
346 both components of the given \a point.-
347-
348 Equivalent to \c{QPoint(0,0) - point}.-
349*/-
350-
351/*!-
352 \fn QPoint &QPoint::operator/=(qreal divisor)-
353 \overload-
354-
355 Divides both x and y by the given \a divisor, and returns a reference to this-
356 point. For example:-
357-
358 \snippet code/src_corelib_tools_qpoint.cpp 6-
359-
360 Note that the result is rounded to the nearest integer as points are held as-
361 integers. Use QPointF for floating point accuracy.-
362-
363 \sa operator*=()-
364*/-
365-
366/*!-
367 \fn const QPoint operator/(const QPoint &point, qreal divisor)-
368 \relates QPoint-
369-
370 Returns the QPoint formed by dividing both components of the given \a point-
371 by the given \a divisor.-
372-
373 Note that the result is rounded to the nearest integer as points are held as-
374 integers. Use QPointF for floating point accuracy.-
375-
376 \sa QPoint::operator/=()-
377*/-
378-
379/*****************************************************************************-
380 QPoint stream functions-
381 *****************************************************************************/-
382#ifndef QT_NO_DATASTREAM-
383/*!-
384 \fn QDataStream &operator<<(QDataStream &stream, const QPoint &point)-
385 \relates QPoint-
386-
387 Writes the given \a point to the given \a stream and returns a-
388 reference to the stream.-
389-
390 \sa {Serializing Qt Data Types}-
391*/-
392-
393QDataStream &operator<<(QDataStream &s, const QPoint &p)-
394{-
395 if (s.version() == 1)
s.version() == 1Description
TRUEnever evaluated
FALSEevaluated 159 times by 6 tests
Evaluated by:
  • tst_QDataStream
  • tst_QGuiVariant
  • tst_QMetaType
  • tst_QPoint
  • tst_QSettings
  • tst_QVariant
0-159
396 s << (qint16)p.x() << (qint16)p.y();
never executed: s << (qint16)p.x() << (qint16)p.y();
0
397 else-
398 s << (qint32)p.x() << (qint32)p.y();
executed 159 times by 6 tests: s << (qint32)p.x() << (qint32)p.y();
Executed by:
  • tst_QDataStream
  • tst_QGuiVariant
  • tst_QMetaType
  • tst_QPoint
  • tst_QSettings
  • tst_QVariant
159
399 return s;
executed 159 times by 6 tests: return s;
Executed by:
  • tst_QDataStream
  • tst_QGuiVariant
  • tst_QMetaType
  • tst_QPoint
  • tst_QSettings
  • tst_QVariant
159
400}-
401-
402/*!-
403 \fn QDataStream &operator>>(QDataStream &stream, QPoint &point)-
404 \relates QPoint-
405-
406 Reads a point from the given \a stream into the given \a point-
407 and returns a reference to the stream.-
408-
409 \sa {Serializing Qt Data Types}-
410*/-
411-
412QDataStream &operator>>(QDataStream &s, QPoint &p)-
413{-
414 if (s.version() == 1) {
s.version() == 1Description
TRUEnever evaluated
FALSEevaluated 171 times by 6 tests
Evaluated by:
  • tst_QDataStream
  • tst_QGuiVariant
  • tst_QMetaType
  • tst_QPoint
  • tst_QSettings
  • tst_QVariant
0-171
415 qint16 x, y;-
416 s >> x; p.rx() = x;-
417 s >> y; p.ry() = y;-
418 }
never executed: end of block
0
419 else {-
420 qint32 x, y;-
421 s >> x; p.rx() = x;-
422 s >> y; p.ry() = y;-
423 }
executed 171 times by 6 tests: end of block
Executed by:
  • tst_QDataStream
  • tst_QGuiVariant
  • tst_QMetaType
  • tst_QPoint
  • tst_QSettings
  • tst_QVariant
171
424 return s;
executed 171 times by 6 tests: return s;
Executed by:
  • tst_QDataStream
  • tst_QGuiVariant
  • tst_QMetaType
  • tst_QPoint
  • tst_QSettings
  • tst_QVariant
171
425}-
426-
427#endif // QT_NO_DATASTREAM-
428/*!-
429 \fn int QPoint::manhattanLength() const-
430-
431 Returns the sum of the absolute values of x() and y(),-
432 traditionally known as the "Manhattan length" of the vector from-
433 the origin to the point. For example:-
434-
435 \snippet code/src_corelib_tools_qpoint.cpp 7-
436-
437 This is a useful, and quick to calculate, approximation to the-
438 true length:-
439-
440 \snippet code/src_corelib_tools_qpoint.cpp 8-
441-
442 The tradition of "Manhattan length" arises because such distances-
443 apply to travelers who can only travel on a rectangular grid, like-
444 the streets of Manhattan.-
445*/-
446-
447#ifndef QT_NO_DEBUG_STREAM-
448QDebug operator<<(QDebug dbg, const QPoint &p)-
449{-
450 QDebugStateSaver saver(dbg);-
451 dbg.nospace();-
452 dbg << "QPoint" << '(';-
453 QtDebugUtils::formatQPoint(dbg, p);-
454 dbg << ')';-
455 return dbg;
executed 34 times by 5 tests: return dbg;
Executed by:
  • tst_QDebug
  • tst_QGraphicsProxyWidget
  • tst_QVariant
  • tst_QWidget
  • tst_QWindow
34
456}-
457-
458QDebug operator<<(QDebug dbg, const QPointF &p)-
459{-
460 QDebugStateSaver saver(dbg);-
461 dbg.nospace();-
462 dbg << "QPointF" << '(';-
463 QtDebugUtils::formatQPoint(dbg, p);-
464 dbg << ')';-
465 return dbg;
executed 6 times by 2 tests: return dbg;
Executed by:
  • tst_QDebug
  • tst_QVariant
6
466}-
467#endif-
468-
469/*!-
470 \class QPointF-
471 \inmodule QtCore-
472 \ingroup painting-
473 \reentrant-
474-
475 \brief The QPointF class defines a point in the plane using-
476 floating point precision.-
477-
478 A point is specified by a x coordinate and an y coordinate which-
479 can be accessed using the x() and y() functions. The coordinates-
480 of the point are specified using floating point numbers for-
481 accuracy. The isNull() function returns \c true if both x and y are-
482 set to 0.0. The coordinates can be set (or altered) using the setX()-
483 and setY() functions, or alternatively the rx() and ry() functions which-
484 return references to the coordinates (allowing direct-
485 manipulation).-
486-
487 Given a point \e p, the following statements are all equivalent:-
488-
489 \snippet code/src_corelib_tools_qpoint.cpp 9-
490-
491 A QPointF object can also be used as a vector: Addition and-
492 subtraction are defined as for vectors (each component is added-
493 separately). A QPointF object can also be divided or multiplied by-
494 an \c int or a \c qreal.-
495-
496 In addition, the QPointF class provides a constructor converting a-
497 QPoint object into a QPointF object, and a corresponding toPoint()-
498 function which returns a QPoint copy of \e this point. Finally,-
499 QPointF objects can be streamed as well as compared.-
500-
501 \sa QPoint, QPolygonF-
502*/-
503-
504/*!-
505 \fn QPointF::QPointF()-
506-
507 Constructs a null point, i.e. with coordinates (0.0, 0.0)-
508-
509 \sa isNull()-
510*/-
511-
512/*!-
513 \fn QPointF::QPointF(const QPoint &point)-
514-
515 Constructs a copy of the given \a point.-
516-
517 \sa toPoint()-
518*/-
519-
520/*!-
521 \fn QPointF::QPointF(qreal xpos, qreal ypos)-
522-
523 Constructs a point with the given coordinates (\a xpos, \a ypos).-
524-
525 \sa setX(), setY()-
526*/-
527-
528/*!-
529 \fn bool QPointF::isNull() const-
530-
531 Returns \c true if both the x and y coordinates are set to 0.0 (ignoring-
532 the sign); otherwise returns \c false.-
533*/-
534-
535-
536/*!-
537 \fn qreal QPointF::manhattanLength() const-
538 \since 4.6-
539-
540 Returns the sum of the absolute values of x() and y(),-
541 traditionally known as the "Manhattan length" of the vector from-
542 the origin to the point.-
543-
544 \sa QPoint::manhattanLength()-
545*/-
546-
547/*!-
548 \fn qreal QPointF::x() const-
549-
550 Returns the x coordinate of this point.-
551-
552 \sa setX(), rx()-
553*/-
554-
555/*!-
556 \fn qreal QPointF::y() const-
557-
558 Returns the y coordinate of this point.-
559-
560 \sa setY(), ry()-
561*/-
562-
563/*!-
564 \fn void QPointF::setX(qreal x)-
565-
566 Sets the x coordinate of this point to the given \a x coordinate.-
567-
568 \sa x(), setY()-
569*/-
570-
571/*!-
572 \fn void QPointF::setY(qreal y)-
573-
574 Sets the y coordinate of this point to the given \a y coordinate.-
575-
576 \sa y(), setX()-
577*/-
578-
579/*!-
580 \fn qreal& QPointF::rx()-
581-
582 Returns a reference to the x coordinate of this point.-
583-
584 Using a reference makes it possible to directly manipulate x. For example:-
585-
586 \snippet code/src_corelib_tools_qpoint.cpp 10-
587-
588 \sa x(), setX()-
589*/-
590-
591/*!-
592 \fn qreal& QPointF::ry()-
593-
594 Returns a reference to the y coordinate of this point.-
595-
596 Using a reference makes it possible to directly manipulate y. For example:-
597-
598 \snippet code/src_corelib_tools_qpoint.cpp 11-
599-
600 \sa y(), setY()-
601*/-
602-
603/*!-
604 \fn QPointF& QPointF::operator+=(const QPointF &point)-
605-
606 Adds the given \a point to this point and returns a reference to-
607 this point. For example:-
608-
609 \snippet code/src_corelib_tools_qpoint.cpp 12-
610-
611 \sa operator-=()-
612*/-
613-
614/*!-
615 \fn QPointF& QPointF::operator-=(const QPointF &point)-
616-
617 Subtracts the given \a point from this point and returns a reference-
618 to this point. For example:-
619-
620 \snippet code/src_corelib_tools_qpoint.cpp 13-
621-
622 \sa operator+=()-
623*/-
624-
625/*!-
626 \fn QPointF& QPointF::operator*=(qreal factor)-
627-
628 Multiplies this point's coordinates by the given \a factor, and-
629 returns a reference to this point. For example:-
630-
631 \snippet code/src_corelib_tools_qpoint.cpp 14-
632-
633 \sa operator/=()-
634*/-
635-
636/*!-
637 \fn QPointF& QPointF::operator/=(qreal divisor)-
638-
639 Divides both x and y by the given \a divisor, and returns a reference-
640 to this point. For example:-
641-
642 \snippet code/src_corelib_tools_qpoint.cpp 15-
643-
644 \sa operator*=()-
645*/-
646-
647/*!-
648 \fn const QPointF operator+(const QPointF &p1, const QPointF &p2)-
649 \relates QPointF-
650-
651 Returns a QPointF object that is the sum of the given points, \a p1-
652 and \a p2; each component is added separately.-
653-
654 \sa QPointF::operator+=()-
655*/-
656-
657/*!-
658 \fn const QPointF operator-(const QPointF &p1, const QPointF &p2)-
659 \relates QPointF-
660-
661 Returns a QPointF object that is formed by subtracting \a p2 from \a p1;-
662 each component is subtracted separately.-
663-
664 \sa QPointF::operator-=()-
665*/-
666-
667/*!-
668 \fn const QPointF operator*(const QPointF &point, qreal factor)-
669 \relates QPointF-
670-
671 Returns a copy of the given \a point, multiplied by the given \a factor.-
672-
673 \sa QPointF::operator*=()-
674*/-
675-
676/*!-
677 \fn const QPointF operator*(qreal factor, const QPointF &point)-
678 \relates QPointF-
679-
680 \overload-
681-
682 Returns a copy of the given \a point, multiplied by the given \a factor.-
683*/-
684-
685/*!-
686 \fn const QPointF operator+(const QPointF &point)-
687 \relates QPointF-
688 \since 5.0-
689-
690 Returns \a point unmodified.-
691*/-
692-
693/*!-
694 \fn const QPointF operator-(const QPointF &point)-
695 \relates QPointF-
696 \overload-
697-
698 Returns a QPointF object that is formed by changing the sign of-
699 both components of the given \a point.-
700-
701 Equivalent to \c {QPointF(0,0) - point}.-
702*/-
703-
704/*!-
705 \fn const QPointF operator/(const QPointF &point, qreal divisor)-
706 \relates QPointF-
707-
708 Returns the QPointF object formed by dividing both components of-
709 the given \a point by the given \a divisor.-
710-
711 \sa QPointF::operator/=()-
712*/-
713-
714/*!-
715 \fn QPoint QPointF::toPoint() const-
716-
717 Rounds the coordinates of this point to the nearest integer, and-
718 returns a QPoint object with the rounded coordinates.-
719-
720 \sa QPointF()-
721*/-
722-
723/*!-
724 \fn static qreal QPointF::dotProduct(const QPointF &p1, const QPointF &p2)-
725 \since 5.1-
726-
727 \snippet code/src_corelib_tools_qpoint.cpp 17-
728-
729 Returns the dot product of \a p1 and \a p2.-
730*/-
731-
732/*!-
733 \fn bool operator==(const QPointF &p1, const QPointF &p2)-
734 \relates QPointF-
735-
736 Returns \c true if \a p1 is equal to \a p2; otherwise returns \c false.-
737*/-
738-
739/*!-
740 \fn bool operator!=(const QPointF &p1, const QPointF &p2);-
741 \relates QPointF-
742-
743 Returns \c true if \a p1 is not equal to \a p2; otherwise returns \c false.-
744*/-
745-
746#ifndef QT_NO_DATASTREAM-
747/*!-
748 \fn QDataStream &operator<<(QDataStream &stream, const QPointF &point)-
749 \relates QPointF-
750-
751 Writes the given \a point to the given \a stream and returns a-
752 reference to the stream.-
753-
754 \sa {Serializing Qt Data Types}-
755*/-
756-
757QDataStream &operator<<(QDataStream &s, const QPointF &p)-
758{-
759 s << double(p.x()) << double(p.y());-
760 return s;
executed 256 times by 10 tests: return s;
Executed by:
  • tst_QBrush
  • tst_QDataStream
  • tst_QGuiVariant
  • tst_QMetaType
  • tst_QPen
  • tst_QPicture
  • tst_QPointF
  • tst_QPrinter
  • tst_QStyleSheetStyle
  • tst_QVariant
256
761}-
762-
763/*!-
764 \fn QDataStream &operator>>(QDataStream &stream, QPointF &point)-
765 \relates QPointF-
766-
767 Reads a point from the given \a stream into the given \a point-
768 and returns a reference to the stream.-
769-
770 \sa {Serializing Qt Data Types}-
771*/-
772-
773QDataStream &operator>>(QDataStream &s, QPointF &p)-
774{-
775 double x, y;-
776 s >> x;-
777 s >> y;-
778 p.setX(qreal(x));-
779 p.setY(qreal(y));-
780 return s;
executed 136 times by 9 tests: return s;
Executed by:
  • tst_QBrush
  • tst_QDataStream
  • tst_QGuiVariant
  • tst_QMetaType
  • tst_QPen
  • tst_QPicture
  • tst_QPointF
  • tst_QPrinter
  • tst_QVariant
136
781}-
782#endif // QT_NO_DATASTREAM-
783-
784QT_END_NAMESPACE-
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