qpoint.cpp

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39-
40#include "qpoint.h"-
41#include "qdatastream.h"-
42-
43#include <private/qdebug_p.h>-
44-
45QT_BEGIN_NAMESPACE-
46-
47/*!-
48 \class QPoint-
49 \inmodule QtCore-
50 \ingroup painting-
51 \reentrant-
52-
53 \brief The QPoint class defines a point in the plane using integer-
54 precision.-
55-
56 A point is specified by a x coordinate and an y coordinate which-
57 can be accessed using the x() and y() functions. The isNull()-
58 function returns \c true if both x and y are set to 0. The-
59 coordinates can be set (or altered) using the setX() and setY()-
60 functions, or alternatively the rx() and ry() functions which-
61 return references to the coordinates (allowing direct-
62 manipulation).-
63-
64 Given a point \e p, the following statements are all equivalent:-
65-
66 \snippet code/src_corelib_tools_qpoint.cpp 0-
67-
68 A QPoint object can also be used as a vector: Addition and-
69 subtraction are defined as for vectors (each component is added-
70 separately). A QPoint object can also be divided or multiplied by-
71 an \c int or a \c qreal.-
72-
73 In addition, the QPoint class provides the manhattanLength()-
74 function which gives an inexpensive approximation of the length of-
75 the QPoint object interpreted as a vector. Finally, QPoint objects-
76 can be streamed as well as compared.-
77-
78 \sa QPointF, QPolygon-
79*/-
80-
81-
82/*****************************************************************************-
83 QPoint member functions-
84 *****************************************************************************/-
85-
86/*!-
87 \fn QPoint::QPoint()-
88-
89 Constructs a null point, i.e. with coordinates (0, 0)-
90-
91 \sa isNull()-
92*/-
93-
94/*!-
95 \fn QPoint::QPoint(int xpos, int ypos)-
96-
97 Constructs a point with the given coordinates (\a xpos, \a ypos).-
98-
99 \sa setX(), setY()-
100*/-
101-
102/*!-
103 \fn bool QPoint::isNull() const-
104-
105 Returns \c true if both the x and y coordinates are set to 0,-
106 otherwise returns \c false.-
107*/-
108-
109/*!-
110 \fn int QPoint::x() const-
111-
112 Returns the x coordinate of this point.-
113-
114 \sa setX(), rx()-
115*/-
116-
117/*!-
118 \fn int QPoint::y() const-
119-
120 Returns the y coordinate of this point.-
121-
122 \sa setY(), ry()-
123*/-
124-
125/*!-
126 \fn void QPoint::setX(int x)-
127-
128 Sets the x coordinate of this point to the given \a x coordinate.-
129-
130 \sa x(), setY()-
131*/-
132-
133/*!-
134 \fn void QPoint::setY(int y)-
135-
136 Sets the y coordinate of this point to the given \a y coordinate.-
137-
138 \sa y(), setX()-
139*/-
140-
141-
142/*!-
143 \fn int &QPoint::rx()-
144-
145 Returns a reference to the x coordinate of this point.-
146-
147 Using a reference makes it possible to directly manipulate x. For example:-
148-
149 \snippet code/src_corelib_tools_qpoint.cpp 1-
150-
151 \sa x(), setX()-
152*/-
153-
154/*!-
155 \fn int &QPoint::ry()-
156-
157 Returns a reference to the y coordinate of this point.-
158-
159 Using a reference makes it possible to directly manipulate y. For-
160 example:-
161-
162 \snippet code/src_corelib_tools_qpoint.cpp 2-
163-
164 \sa y(), setY()-
165*/-
166-
167-
168/*!-
169 \fn QPoint &QPoint::operator+=(const QPoint &point)-
170-
171 Adds the given \a point to this point and returns a reference to-
172 this point. For example:-
173-
174 \snippet code/src_corelib_tools_qpoint.cpp 3-
175-
176 \sa operator-=()-
177*/-
178-
179/*!-
180 \fn QPoint &QPoint::operator-=(const QPoint &point)-
181-
182 Subtracts the given \a point from this point and returns a-
183 reference to this point. For example:-
184-
185 \snippet code/src_corelib_tools_qpoint.cpp 4-
186-
187 \sa operator+=()-
188*/-
189-
190/*!-
191 \fn QPoint &QPoint::operator*=(float factor)-
192-
193 Multiplies this point's coordinates by the given \a factor, and-
194 returns a reference to this point.-
195-
196 Note that the result is rounded to the nearest integer as points are held as-
197 integers. Use QPointF for floating point accuracy.-
198-
199 \sa operator/=()-
200*/-
201-
202/*!-
203 \fn QPoint &QPoint::operator*=(double factor)-
204-
205 Multiplies this point's coordinates by the given \a factor, and-
206 returns a reference to this point. For example:-
207-
208 \snippet code/src_corelib_tools_qpoint.cpp 5-
209-
210 Note that the result is rounded to the nearest integer as points are held as-
211 integers. Use QPointF for floating point accuracy.-
212-
213 \sa operator/=()-
214*/-
215-
216/*!-
217 \fn QPoint &QPoint::operator*=(int factor)-
218-
219 Multiplies this point's coordinates by the given \a factor, and-
220 returns a reference to this point.-
221-
222 \sa operator/=()-
223*/-
224-
225/*!-
226 \fn static int QPoint::dotProduct(const QPoint &p1, const QPoint &p2)-
227 \since 5.1-
228-
229 \snippet code/src_corelib_tools_qpoint.cpp 16-
230-
231 Returns the dot product of \a p1 and \a p2.-
232*/-
233-
234/*!-
235 \fn bool operator==(const QPoint &p1, const QPoint &p2)-
236 \relates QPoint-
237-
238 Returns \c true if \a p1 and \a p2 are equal; otherwise returns-
239 false.-
240*/-
241-
242/*!-
243 \fn bool operator!=(const QPoint &p1, const QPoint &p2)-
244 \relates QPoint-
245-
246 Returns \c true if \a p1 and \a p2 are not equal; otherwise returns \c false.-
247*/-
248-
249/*!-
250 \fn const QPoint operator+(const QPoint &p1, const QPoint &p2)-
251 \relates QPoint-
252-
253 Returns a QPoint object that is the sum of the given points, \a p1-
254 and \a p2; each component is added separately.-
255-
256 \sa QPoint::operator+=()-
257*/-
258-
259/*!-
260 \fn const QPoint operator-(const QPoint &p1, const QPoint &p2)-
261 \relates QPoint-
262-
263 Returns a QPoint object that is formed by subtracting \a p2 from-
264 \a p1; each component is subtracted separately.-
265-
266 \sa QPoint::operator-=()-
267*/-
268-
269/*!-
270 \fn const QPoint operator*(const QPoint &point, float factor)-
271 \relates QPoint-
272-
273 Returns a copy of the given \a point multiplied by the given \a factor.-
274-
275 Note that the result is rounded to the nearest integer as points-
276 are held as integers. Use QPointF for floating point accuracy.-
277-
278 \sa QPoint::operator*=()-
279*/-
280-
281/*!-
282 \fn const QPoint operator*(const QPoint &point, double factor)-
283 \relates QPoint-
284-
285 Returns a copy of the given \a point multiplied by the given \a factor.-
286-
287 Note that the result is rounded to the nearest integer as points-
288 are held as integers. Use QPointF for floating point accuracy.-
289-
290 \sa QPoint::operator*=()-
291*/-
292-
293/*!-
294 \fn const QPoint operator*(const QPoint &point, int factor)-
295 \relates QPoint-
296-
297 Returns a copy of the given \a point multiplied by the given \a factor.-
298-
299 \sa QPoint::operator*=()-
300*/-
301-
302/*!-
303 \fn const QPoint operator*(float factor, const QPoint &point)-
304 \overload-
305 \relates QPoint-
306-
307 Returns a copy of the given \a point multiplied by the given \a factor.-
308-
309 Note that the result is rounded to the nearest integer as points-
310 are held as integers. Use QPointF for floating point accuracy.-
311-
312 \sa QPoint::operator*=()-
313*/-
314-
315/*!-
316 \fn const QPoint operator*(double factor, const QPoint &point)-
317 \overload-
318 \relates QPoint-
319-
320 Returns a copy of the given \a point multiplied by the given \a factor.-
321-
322 Note that the result is rounded to the nearest integer as points-
323 are held as integers. Use QPointF for floating point accuracy.-
324-
325 \sa QPoint::operator*=()-
326*/-
327-
328/*!-
329 \fn const QPoint operator*(int factor, const QPoint &point)-
330 \overload-
331 \relates QPoint-
332-
333 Returns a copy of the given \a point multiplied by the given \a factor.-
334-
335 \sa QPoint::operator*=()-
336*/-
337-
338/*!-
339 \fn const QPoint operator+(const QPoint &point)-
340 \relates QPoint-
341 \since 5.0-
342-
343 Returns \a point unmodified.-
344*/-
345-
346/*!-
347 \fn const QPoint operator-(const QPoint &point)-
348 \overload-
349 \relates QPoint-
350-
351 Returns a QPoint object that is formed by changing the sign of-
352 both components of the given \a point.-
353-
354 Equivalent to \c{QPoint(0,0) - point}.-
355*/-
356-
357/*!-
358 \fn QPoint &QPoint::operator/=(qreal divisor)-
359 \overload-
360-
361 Divides both x and y by the given \a divisor, and returns a reference to this-
362 point. For example:-
363-
364 \snippet code/src_corelib_tools_qpoint.cpp 6-
365-
366 Note that the result is rounded to the nearest integer as points are held as-
367 integers. Use QPointF for floating point accuracy.-
368-
369 \sa operator*=()-
370*/-
371-
372/*!-
373 \fn const QPoint operator/(const QPoint &point, qreal divisor)-
374 \relates QPoint-
375-
376 Returns the QPoint formed by dividing both components of the given \a point-
377 by the given \a divisor.-
378-
379 Note that the result is rounded to the nearest integer as points are held as-
380 integers. Use QPointF for floating point accuracy.-
381-
382 \sa QPoint::operator/=()-
383*/-
384-
385/*****************************************************************************-
386 QPoint stream functions-
387 *****************************************************************************/-
388#ifndef QT_NO_DATASTREAM-
389/*!-
390 \fn QDataStream &operator<<(QDataStream &stream, const QPoint &point)-
391 \relates QPoint-
392-
393 Writes the given \a point to the given \a stream and returns a-
394 reference to the stream.-
395-
396 \sa {Serializing Qt Data Types}-
397*/-
398-
399QDataStream &operator<<(QDataStream &s, const QPoint &p)-
400{-
401 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
402 s << (qint16)p.x() << (qint16)p.y();
never executed: s << (qint16)p.x() << (qint16)p.y();
0
403 else-
404 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
405 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
406}-
407-
408/*!-
409 \fn QDataStream &operator>>(QDataStream &stream, QPoint &point)-
410 \relates QPoint-
411-
412 Reads a point from the given \a stream into the given \a point-
413 and returns a reference to the stream.-
414-
415 \sa {Serializing Qt Data Types}-
416*/-
417-
418QDataStream &operator>>(QDataStream &s, QPoint &p)-
419{-
420 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
421 qint16 x, y;-
422 s >> x; p.rx() = x;-
423 s >> y; p.ry() = y;-
424 }
never executed: end of block
0
425 else {-
426 qint32 x, y;-
427 s >> x; p.rx() = x;-
428 s >> y; p.ry() = y;-
429 }
executed 171 times by 6 tests: end of block
Executed by:
  • tst_QDataStream
  • tst_QGuiVariant
  • tst_QMetaType
  • tst_QPoint
  • tst_QSettings
  • tst_QVariant
171
430 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
431}-
432-
433#endif // QT_NO_DATASTREAM-
434/*!-
435 \fn int QPoint::manhattanLength() const-
436-
437 Returns the sum of the absolute values of x() and y(),-
438 traditionally known as the "Manhattan length" of the vector from-
439 the origin to the point. For example:-
440-
441 \snippet code/src_corelib_tools_qpoint.cpp 7-
442-
443 This is a useful, and quick to calculate, approximation to the-
444 true length:-
445-
446 \snippet code/src_corelib_tools_qpoint.cpp 8-
447-
448 The tradition of "Manhattan length" arises because such distances-
449 apply to travelers who can only travel on a rectangular grid, like-
450 the streets of Manhattan.-
451*/-
452-
453#ifndef QT_NO_DEBUG_STREAM-
454QDebug operator<<(QDebug dbg, const QPoint &p)-
455{-
456 QDebugStateSaver saver(dbg);-
457 dbg.nospace();-
458 dbg << "QPoint" << '(';-
459 QtDebugUtils::formatQPoint(dbg, p);-
460 dbg << ')';-
461 return dbg;
executed 34 times by 5 tests: return dbg;
Executed by:
  • tst_QDebug
  • tst_QGraphicsProxyWidget
  • tst_QVariant
  • tst_QWidget
  • tst_QWindow
34
462}-
463-
464QDebug operator<<(QDebug dbg, const QPointF &p)-
465{-
466 QDebugStateSaver saver(dbg);-
467 dbg.nospace();-
468 dbg << "QPointF" << '(';-
469 QtDebugUtils::formatQPoint(dbg, p);-
470 dbg << ')';-
471 return dbg;
executed 6 times by 2 tests: return dbg;
Executed by:
  • tst_QDebug
  • tst_QVariant
6
472}-
473#endif-
474-
475/*!-
476 \class QPointF-
477 \inmodule QtCore-
478 \ingroup painting-
479 \reentrant-
480-
481 \brief The QPointF class defines a point in the plane using-
482 floating point precision.-
483-
484 A point is specified by a x coordinate and an y coordinate which-
485 can be accessed using the x() and y() functions. The coordinates-
486 of the point are specified using floating point numbers for-
487 accuracy. The isNull() function returns \c true if both x and y are-
488 set to 0.0. The coordinates can be set (or altered) using the setX()-
489 and setY() functions, or alternatively the rx() and ry() functions which-
490 return references to the coordinates (allowing direct-
491 manipulation).-
492-
493 Given a point \e p, the following statements are all equivalent:-
494-
495 \snippet code/src_corelib_tools_qpoint.cpp 9-
496-
497 A QPointF object can also be used as a vector: Addition and-
498 subtraction are defined as for vectors (each component is added-
499 separately). A QPointF object can also be divided or multiplied by-
500 an \c int or a \c qreal.-
501-
502 In addition, the QPointF class provides a constructor converting a-
503 QPoint object into a QPointF object, and a corresponding toPoint()-
504 function which returns a QPoint copy of \e this point. Finally,-
505 QPointF objects can be streamed as well as compared.-
506-
507 \sa QPoint, QPolygonF-
508*/-
509-
510/*!-
511 \fn QPointF::QPointF()-
512-
513 Constructs a null point, i.e. with coordinates (0.0, 0.0)-
514-
515 \sa isNull()-
516*/-
517-
518/*!-
519 \fn QPointF::QPointF(const QPoint &point)-
520-
521 Constructs a copy of the given \a point.-
522-
523 \sa toPoint()-
524*/-
525-
526/*!-
527 \fn QPointF::QPointF(qreal xpos, qreal ypos)-
528-
529 Constructs a point with the given coordinates (\a xpos, \a ypos).-
530-
531 \sa setX(), setY()-
532*/-
533-
534/*!-
535 \fn bool QPointF::isNull() const-
536-
537 Returns \c true if both the x and y coordinates are set to 0.0 (ignoring-
538 the sign); otherwise returns \c false.-
539*/-
540-
541-
542/*!-
543 \fn qreal QPointF::manhattanLength() const-
544 \since 4.6-
545-
546 Returns the sum of the absolute values of x() and y(),-
547 traditionally known as the "Manhattan length" of the vector from-
548 the origin to the point.-
549-
550 \sa QPoint::manhattanLength()-
551*/-
552-
553/*!-
554 \fn qreal QPointF::x() const-
555-
556 Returns the x coordinate of this point.-
557-
558 \sa setX(), rx()-
559*/-
560-
561/*!-
562 \fn qreal QPointF::y() const-
563-
564 Returns the y coordinate of this point.-
565-
566 \sa setY(), ry()-
567*/-
568-
569/*!-
570 \fn void QPointF::setX(qreal x)-
571-
572 Sets the x coordinate of this point to the given \a x coordinate.-
573-
574 \sa x(), setY()-
575*/-
576-
577/*!-
578 \fn void QPointF::setY(qreal y)-
579-
580 Sets the y coordinate of this point to the given \a y coordinate.-
581-
582 \sa y(), setX()-
583*/-
584-
585/*!-
586 \fn qreal& QPointF::rx()-
587-
588 Returns a reference to the x coordinate of this point.-
589-
590 Using a reference makes it possible to directly manipulate x. For example:-
591-
592 \snippet code/src_corelib_tools_qpoint.cpp 10-
593-
594 \sa x(), setX()-
595*/-
596-
597/*!-
598 \fn qreal& QPointF::ry()-
599-
600 Returns a reference to the y coordinate of this point.-
601-
602 Using a reference makes it possible to directly manipulate y. For example:-
603-
604 \snippet code/src_corelib_tools_qpoint.cpp 11-
605-
606 \sa y(), setY()-
607*/-
608-
609/*!-
610 \fn QPointF& QPointF::operator+=(const QPointF &point)-
611-
612 Adds the given \a point to this point and returns a reference to-
613 this point. For example:-
614-
615 \snippet code/src_corelib_tools_qpoint.cpp 12-
616-
617 \sa operator-=()-
618*/-
619-
620/*!-
621 \fn QPointF& QPointF::operator-=(const QPointF &point)-
622-
623 Subtracts the given \a point from this point and returns a reference-
624 to this point. For example:-
625-
626 \snippet code/src_corelib_tools_qpoint.cpp 13-
627-
628 \sa operator+=()-
629*/-
630-
631/*!-
632 \fn QPointF& QPointF::operator*=(qreal factor)-
633-
634 Multiplies this point's coordinates by the given \a factor, and-
635 returns a reference to this point. For example:-
636-
637 \snippet code/src_corelib_tools_qpoint.cpp 14-
638-
639 \sa operator/=()-
640*/-
641-
642/*!-
643 \fn QPointF& QPointF::operator/=(qreal divisor)-
644-
645 Divides both x and y by the given \a divisor, and returns a reference-
646 to this point. For example:-
647-
648 \snippet code/src_corelib_tools_qpoint.cpp 15-
649-
650 \sa operator*=()-
651*/-
652-
653/*!-
654 \fn const QPointF operator+(const QPointF &p1, const QPointF &p2)-
655 \relates QPointF-
656-
657 Returns a QPointF object that is the sum of the given points, \a p1-
658 and \a p2; each component is added separately.-
659-
660 \sa QPointF::operator+=()-
661*/-
662-
663/*!-
664 \fn const QPointF operator-(const QPointF &p1, const QPointF &p2)-
665 \relates QPointF-
666-
667 Returns a QPointF object that is formed by subtracting \a p2 from \a p1;-
668 each component is subtracted separately.-
669-
670 \sa QPointF::operator-=()-
671*/-
672-
673/*!-
674 \fn const QPointF operator*(const QPointF &point, qreal factor)-
675 \relates QPointF-
676-
677 Returns a copy of the given \a point, multiplied by the given \a factor.-
678-
679 \sa QPointF::operator*=()-
680*/-
681-
682/*!-
683 \fn const QPointF operator*(qreal factor, const QPointF &point)-
684 \relates QPointF-
685-
686 \overload-
687-
688 Returns a copy of the given \a point, multiplied by the given \a factor.-
689*/-
690-
691/*!-
692 \fn const QPointF operator+(const QPointF &point)-
693 \relates QPointF-
694 \since 5.0-
695-
696 Returns \a point unmodified.-
697*/-
698-
699/*!-
700 \fn const QPointF operator-(const QPointF &point)-
701 \relates QPointF-
702 \overload-
703-
704 Returns a QPointF object that is formed by changing the sign of-
705 both components of the given \a point.-
706-
707 Equivalent to \c {QPointF(0,0) - point}.-
708*/-
709-
710/*!-
711 \fn const QPointF operator/(const QPointF &point, qreal divisor)-
712 \relates QPointF-
713-
714 Returns the QPointF object formed by dividing both components of-
715 the given \a point by the given \a divisor.-
716-
717 \sa QPointF::operator/=()-
718*/-
719-
720/*!-
721 \fn QPoint QPointF::toPoint() const-
722-
723 Rounds the coordinates of this point to the nearest integer, and-
724 returns a QPoint object with the rounded coordinates.-
725-
726 \sa QPointF()-
727*/-
728-
729/*!-
730 \fn static qreal QPointF::dotProduct(const QPointF &p1, const QPointF &p2)-
731 \since 5.1-
732-
733 \snippet code/src_corelib_tools_qpoint.cpp 17-
734-
735 Returns the dot product of \a p1 and \a p2.-
736*/-
737-
738/*!-
739 \fn bool operator==(const QPointF &p1, const QPointF &p2)-
740 \relates QPointF-
741-
742 Returns \c true if \a p1 is equal to \a p2; otherwise returns \c false.-
743*/-
744-
745/*!-
746 \fn bool operator!=(const QPointF &p1, const QPointF &p2);-
747 \relates QPointF-
748-
749 Returns \c true if \a p1 is not equal to \a p2; otherwise returns \c false.-
750*/-
751-
752#ifndef QT_NO_DATASTREAM-
753/*!-
754 \fn QDataStream &operator<<(QDataStream &stream, const QPointF &point)-
755 \relates QPointF-
756-
757 Writes the given \a point to the given \a stream and returns a-
758 reference to the stream.-
759-
760 \sa {Serializing Qt Data Types}-
761*/-
762-
763QDataStream &operator<<(QDataStream &s, const QPointF &p)-
764{-
765 s << double(p.x()) << double(p.y());-
766 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
767}-
768-
769/*!-
770 \fn QDataStream &operator>>(QDataStream &stream, QPointF &point)-
771 \relates QPointF-
772-
773 Reads a point from the given \a stream into the given \a point-
774 and returns a reference to the stream.-
775-
776 \sa {Serializing Qt Data Types}-
777*/-
778-
779QDataStream &operator>>(QDataStream &s, QPointF &p)-
780{-
781 double x, y;-
782 s >> x;-
783 s >> y;-
784 p.setX(qreal(x));-
785 p.setY(qreal(y));-
786 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
787}-
788#endif // QT_NO_DATASTREAM-
789-
790QT_END_NAMESPACE-
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