qgraphicsitemanimation.cpp

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33-
34/*!-
35 \class QGraphicsItemAnimation-
36 \brief The QGraphicsItemAnimation class provides simple animation-
37 support for QGraphicsItem.-
38 \since 4.2-
39 \ingroup graphicsview-api-
40 \inmodule QtWidgets-
41 \deprecated-
42-
43 The QGraphicsItemAnimation class animates a QGraphicsItem. You can-
44 schedule changes to the item's transformation matrix at-
45 specified steps. The QGraphicsItemAnimation class has a-
46 current step value. When this value changes the transformations-
47 scheduled at that step are performed. The current step of the-
48 animation is set with the \c setStep() function.-
49-
50 QGraphicsItemAnimation will do a simple linear interpolation-
51 between the nearest adjacent scheduled changes to calculate the-
52 matrix. For instance, if you set the position of an item at values-
53 0.0 and 1.0, the animation will show the item moving in a straight-
54 line between these positions. The same is true for scaling and-
55 rotation.-
56-
57 It is usual to use the class with a QTimeLine. The timeline's-
58 \l{QTimeLine::}{valueChanged()} signal is then connected to the-
59 \c setStep() slot. For example, you can set up an item for rotation-
60 by calling \c setRotationAt() for different step values.-
61 The animations timeline is set with the setTimeLine() function.-
62-
63 An example animation with a timeline follows:-
64-
65 \snippet timeline/main.cpp 0-
66-
67 Note that steps lie between 0.0 and 1.0. It may be necessary to use-
68 \l{QTimeLine::}{setUpdateInterval()}. The default update interval-
69 is 40 ms. A scheduled transformation cannot be removed when set,-
70 so scheduling several transformations of the same kind (e.g.,-
71 rotations) at the same step is not recommended.-
72-
73 \sa QTimeLine, {Graphics View Framework}-
74*/-
75-
76#include "qgraphicsitemanimation.h"-
77-
78#ifndef QT_NO_GRAPHICSVIEW-
79-
80#include "qgraphicsitem.h"-
81-
82#include <QtCore/qtimeline.h>-
83#include <QtCore/qpoint.h>-
84#include <QtCore/qpointer.h>-
85#include <QtCore/qpair.h>-
86#include <QtGui/qmatrix.h>-
87-
88#include <algorithm>-
89-
90QT_BEGIN_NAMESPACE-
91-
92static inline bool check_step_valid(qreal step, const char *method)-
93{-
94 if (!(step >= 0 && step <= 1)) {
step >= 0Description
TRUEnever evaluated
FALSEnever evaluated
step <= 1Description
TRUEnever evaluated
FALSEnever evaluated
0
95 qWarning("QGraphicsItemAnimation::%s: invalid step = %f", method, step);-
96 return false;
never executed: return false;
0
97 }-
98 return true;
never executed: return true;
0
99}-
100-
101class QGraphicsItemAnimationPrivate-
102{-
103public:-
104 inline QGraphicsItemAnimationPrivate()-
105 : q(0), timeLine(0), item(0), step(0)-
106 { }
never executed: end of block
0
107-
108 QGraphicsItemAnimation *q;-
109-
110 QPointer<QTimeLine> timeLine;-
111 QGraphicsItem *item;-
112-
113 QPointF startPos;-
114 QMatrix startMatrix;-
115-
116 qreal step;-
117-
118 struct Pair {-
119 bool operator <(const Pair &other) const-
120 { return step < other.step; }
never executed: return step < other.step;
0
121 bool operator==(const Pair &other) const-
122 { return step == other.step; }
never executed: return step == other.step;
0
123 qreal step;-
124 qreal value;-
125 };-
126 QVector<Pair> xPosition;-
127 QVector<Pair> yPosition;-
128 QVector<Pair> rotation;-
129 QVector<Pair> verticalScale;-
130 QVector<Pair> horizontalScale;-
131 QVector<Pair> verticalShear;-
132 QVector<Pair> horizontalShear;-
133 QVector<Pair> xTranslation;-
134 QVector<Pair> yTranslation;-
135-
136 qreal linearValueForStep(qreal step, QVector<Pair> *source, qreal defaultValue = 0);-
137 void insertUniquePair(qreal step, qreal value, QVector<Pair> *binList, const char* method);-
138};-
139Q_DECLARE_TYPEINFO(QGraphicsItemAnimationPrivate::Pair, Q_PRIMITIVE_TYPE);-
140-
141qreal QGraphicsItemAnimationPrivate::linearValueForStep(qreal step, QVector<Pair> *source, qreal defaultValue)-
142{-
143 if (source->isEmpty())
source->isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
0
144 return defaultValue;
never executed: return defaultValue;
0
145 step = qMin<qreal>(qMax<qreal>(step, 0), 1);-
146-
147 if (step == 1)
step == 1Description
TRUEnever evaluated
FALSEnever evaluated
0
148 return source->last().value;
never executed: return source->last().value;
0
149-
150 qreal stepBefore = 0;-
151 qreal stepAfter = 1;-
152 qreal valueBefore = source->first().step == 0 ? source->first().value : defaultValue;
source->first().step == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
153 qreal valueAfter = source->last().value;-
154-
155 // Find the closest step and value before the given step.-
156 for (int i = 0; i < source->size() && step >= source->at(i).step; ++i) {
i < source->size()Description
TRUEnever evaluated
FALSEnever evaluated
step >= source->at(i).stepDescription
TRUEnever evaluated
FALSEnever evaluated
0
157 stepBefore = source->at(i).step;-
158 valueBefore = source->at(i).value;-
159 }
never executed: end of block
0
160-
161 // Find the closest step and value after the given step.-
162 for (int j = source->size() - 1; j >= 0 && step < source->at(j).step; --j) {
j >= 0Description
TRUEnever evaluated
FALSEnever evaluated
step < source->at(j).stepDescription
TRUEnever evaluated
FALSEnever evaluated
0
163 stepAfter = source->at(j).step;-
164 valueAfter = source->at(j).value;-
165 }
never executed: end of block
0
166-
167 // Do a simple linear interpolation.-
168 return valueBefore + (valueAfter - valueBefore) * ((step - stepBefore) / (stepAfter - stepBefore));
never executed: return valueBefore + (valueAfter - valueBefore) * ((step - stepBefore) / (stepAfter - stepBefore));
0
169}-
170-
171void QGraphicsItemAnimationPrivate::insertUniquePair(qreal step, qreal value, QVector<Pair> *binList, const char* method)-
172{-
173 if (!check_step_valid(step, method))
!check_step_va...(step, method)Description
TRUEnever evaluated
FALSEnever evaluated
0
174 return;
never executed: return;
0
175-
176 const Pair pair = { step, value };-
177-
178 const QVector<Pair>::iterator result = std::lower_bound(binList->begin(), binList->end(), pair);-
179 if (result == binList->end() || pair < *result)
result == binList->end()Description
TRUEnever evaluated
FALSEnever evaluated
pair < *resultDescription
TRUEnever evaluated
FALSEnever evaluated
0
180 binList->insert(result, pair);
never executed: binList->insert(result, pair);
0
181 else-
182 result->value = value;
never executed: result->value = value;
0
183}-
184-
185/*!-
186 Constructs an animation object with the given \a parent.-
187*/-
188QGraphicsItemAnimation::QGraphicsItemAnimation(QObject *parent)-
189 : QObject(parent), d(new QGraphicsItemAnimationPrivate)-
190{-
191 d->q = this;-
192}
never executed: end of block
0
193-
194/*!-
195 Destroys the animation object.-
196*/-
197QGraphicsItemAnimation::~QGraphicsItemAnimation()-
198{-
199 delete d;-
200}
never executed: end of block
0
201-
202/*!-
203 Returns the item on which the animation object operates.-
204-
205 \sa setItem()-
206*/-
207QGraphicsItem *QGraphicsItemAnimation::item() const-
208{-
209 return d->item;
never executed: return d->item;
0
210}-
211-
212/*!-
213 Sets the specified \a item to be used in the animation.-
214-
215 \sa item()-
216*/-
217void QGraphicsItemAnimation::setItem(QGraphicsItem *item)-
218{-
219 d->item = item;-
220 d->startPos = d->item->pos();-
221}
never executed: end of block
0
222-
223/*!-
224 Returns the timeline object used to control the rate at which the animation-
225 occurs.-
226-
227 \sa setTimeLine()-
228*/-
229QTimeLine *QGraphicsItemAnimation::timeLine() const-
230{-
231 return d->timeLine;
never executed: return d->timeLine;
0
232}-
233-
234/*!-
235 Sets the timeline object used to control the rate of animation to the \a timeLine-
236 specified.-
237-
238 \sa timeLine()-
239*/-
240void QGraphicsItemAnimation::setTimeLine(QTimeLine *timeLine)-
241{-
242 if (d->timeLine == timeLine)
d->timeLine == timeLineDescription
TRUEnever evaluated
FALSEnever evaluated
0
243 return;
never executed: return;
0
244 if (d->timeLine)
d->timeLineDescription
TRUEnever evaluated
FALSEnever evaluated
0
245 delete d->timeLine;
never executed: delete d->timeLine;
0
246 if (!timeLine)
!timeLineDescription
TRUEnever evaluated
FALSEnever evaluated
0
247 return;
never executed: return;
0
248 d->timeLine = timeLine;-
249 connect(timeLine, SIGNAL(valueChanged(qreal)), this, SLOT(setStep(qreal)));-
250}
never executed: end of block
0
251-
252/*!-
253 Returns the position of the item at the given \a step value.-
254-
255 \sa setPosAt()-
256*/-
257QPointF QGraphicsItemAnimation::posAt(qreal step) const-
258{-
259 check_step_valid(step, "posAt");-
260 return QPointF(d->linearValueForStep(step, &d->xPosition, d->startPos.x()),
never executed: return QPointF(d->linearValueForStep(step, &d->xPosition, d->startPos.x()), d->linearValueForStep(step, &d->yPosition, d->startPos.y()));
0
261 d->linearValueForStep(step, &d->yPosition, d->startPos.y()));
never executed: return QPointF(d->linearValueForStep(step, &d->xPosition, d->startPos.x()), d->linearValueForStep(step, &d->yPosition, d->startPos.y()));
0
262}-
263-
264/*!-
265 \fn void QGraphicsItemAnimation::setPosAt(qreal step, const QPointF &point)-
266-
267 Sets the position of the item at the given \a step value to the \a point specified.-
268-
269 \sa posAt()-
270*/-
271void QGraphicsItemAnimation::setPosAt(qreal step, const QPointF &pos)-
272{-
273 d->insertUniquePair(step, pos.x(), &d->xPosition, "setPosAt");-
274 d->insertUniquePair(step, pos.y(), &d->yPosition, "setPosAt");-
275}
never executed: end of block
0
276-
277/*!-
278 Returns all explicitly inserted positions.-
279-
280 \sa posAt(), setPosAt()-
281*/-
282QList<QPair<qreal, QPointF> > QGraphicsItemAnimation::posList() const-
283{-
284 QList<QPair<qreal, QPointF> > list;-
285 const int xPosCount = d->xPosition.size();-
286 list.reserve(xPosCount);-
287 for (int i = 0; i < xPosCount; ++i)
i < xPosCountDescription
TRUEnever evaluated
FALSEnever evaluated
0
288 list << QPair<qreal, QPointF>(d->xPosition.at(i).step, QPointF(d->xPosition.at(i).value, d->yPosition.at(i).value));
never executed: list << QPair<qreal, QPointF>(d->xPosition.at(i).step, QPointF(d->xPosition.at(i).value, d->yPosition.at(i).value));
0
289-
290 return list;
never executed: return list;
0
291}-
292-
293/*!-
294 Returns the matrix used to transform the item at the specified \a step value.-
295*/-
296QMatrix QGraphicsItemAnimation::matrixAt(qreal step) const-
297{-
298 check_step_valid(step, "matrixAt");-
299-
300 QMatrix matrix;-
301 if (!d->rotation.isEmpty())
!d->rotation.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
0
302 matrix.rotate(rotationAt(step));
never executed: matrix.rotate(rotationAt(step));
0
303 if (!d->verticalScale.isEmpty())
!d->verticalScale.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
0
304 matrix.scale(horizontalScaleAt(step), verticalScaleAt(step));
never executed: matrix.scale(horizontalScaleAt(step), verticalScaleAt(step));
0
305 if (!d->verticalShear.isEmpty())
!d->verticalShear.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
0
306 matrix.shear(horizontalShearAt(step), verticalShearAt(step));
never executed: matrix.shear(horizontalShearAt(step), verticalShearAt(step));
0
307 if (!d->xTranslation.isEmpty())
!d->xTranslation.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
0
308 matrix.translate(xTranslationAt(step), yTranslationAt(step));
never executed: matrix.translate(xTranslationAt(step), yTranslationAt(step));
0
309 return matrix;
never executed: return matrix;
0
310}-
311-
312/*!-
313 Returns the angle at which the item is rotated at the specified \a step value.-
314-
315 \sa setRotationAt()-
316*/-
317qreal QGraphicsItemAnimation::rotationAt(qreal step) const-
318{-
319 check_step_valid(step, "rotationAt");-
320 return d->linearValueForStep(step, &d->rotation);
never executed: return d->linearValueForStep(step, &d->rotation);
0
321}-
322-
323/*!-
324 Sets the rotation of the item at the given \a step value to the \a angle specified.-
325-
326 \sa rotationAt()-
327*/-
328void QGraphicsItemAnimation::setRotationAt(qreal step, qreal angle)-
329{-
330 d->insertUniquePair(step, angle, &d->rotation, "setRotationAt");-
331}
never executed: end of block
0
332-
333/*!-
334 Returns all explicitly inserted rotations.-
335-
336 \sa rotationAt(), setRotationAt()-
337*/-
338QList<QPair<qreal, qreal> > QGraphicsItemAnimation::rotationList() const-
339{-
340 QList<QPair<qreal, qreal> > list;-
341 const int numRotations = d->rotation.size();-
342 list.reserve(numRotations);-
343 for (int i = 0; i < numRotations; ++i)
i < numRotationsDescription
TRUEnever evaluated
FALSEnever evaluated
0
344 list << QPair<qreal, qreal>(d->rotation.at(i).step, d->rotation.at(i).value);
never executed: list << QPair<qreal, qreal>(d->rotation.at(i).step, d->rotation.at(i).value);
0
345-
346 return list;
never executed: return list;
0
347}-
348-
349/*!-
350 Returns the horizontal translation of the item at the specified \a step value.-
351-
352 \sa setTranslationAt()-
353*/-
354qreal QGraphicsItemAnimation::xTranslationAt(qreal step) const-
355{-
356 check_step_valid(step, "xTranslationAt");-
357 return d->linearValueForStep(step, &d->xTranslation);
never executed: return d->linearValueForStep(step, &d->xTranslation);
0
358}-
359-
360/*!-
361 Returns the vertical translation of the item at the specified \a step value.-
362-
363 \sa setTranslationAt()-
364*/-
365qreal QGraphicsItemAnimation::yTranslationAt(qreal step) const-
366{-
367 check_step_valid(step, "yTranslationAt");-
368 return d->linearValueForStep(step, &d->yTranslation);
never executed: return d->linearValueForStep(step, &d->yTranslation);
0
369}-
370-
371/*!-
372 Sets the translation of the item at the given \a step value using the horizontal-
373 and vertical coordinates specified by \a dx and \a dy.-
374-
375 \sa xTranslationAt(), yTranslationAt()-
376*/-
377void QGraphicsItemAnimation::setTranslationAt(qreal step, qreal dx, qreal dy)-
378{-
379 d->insertUniquePair(step, dx, &d->xTranslation, "setTranslationAt");-
380 d->insertUniquePair(step, dy, &d->yTranslation, "setTranslationAt");-
381}
never executed: end of block
0
382-
383/*!-
384 Returns all explicitly inserted translations.-
385-
386 \sa xTranslationAt(), yTranslationAt(), setTranslationAt()-
387*/-
388QList<QPair<qreal, QPointF> > QGraphicsItemAnimation::translationList() const-
389{-
390 QList<QPair<qreal, QPointF> > list;-
391 const int numTranslations = d->xTranslation.size();-
392 list.reserve(numTranslations);-
393 for (int i = 0; i < numTranslations; ++i)
i < numTranslationsDescription
TRUEnever evaluated
FALSEnever evaluated
0
394 list << QPair<qreal, QPointF>(d->xTranslation.at(i).step, QPointF(d->xTranslation.at(i).value, d->yTranslation.at(i).value));
never executed: list << QPair<qreal, QPointF>(d->xTranslation.at(i).step, QPointF(d->xTranslation.at(i).value, d->yTranslation.at(i).value));
0
395-
396 return list;
never executed: return list;
0
397}-
398-
399/*!-
400 Returns the vertical scale for the item at the specified \a step value.-
401-
402 \sa setScaleAt()-
403*/-
404qreal QGraphicsItemAnimation::verticalScaleAt(qreal step) const-
405{-
406 check_step_valid(step, "verticalScaleAt");-
407-
408 return d->linearValueForStep(step, &d->verticalScale, 1);
never executed: return d->linearValueForStep(step, &d->verticalScale, 1);
0
409}-
410-
411/*!-
412 Returns the horizontal scale for the item at the specified \a step value.-
413-
414 \sa setScaleAt()-
415*/-
416qreal QGraphicsItemAnimation::horizontalScaleAt(qreal step) const-
417{-
418 check_step_valid(step, "horizontalScaleAt");-
419 return d->linearValueForStep(step, &d->horizontalScale, 1);
never executed: return d->linearValueForStep(step, &d->horizontalScale, 1);
0
420}-
421-
422/*!-
423 Sets the scale of the item at the given \a step value using the horizontal and-
424 vertical scale factors specified by \a sx and \a sy.-
425-
426 \sa verticalScaleAt(), horizontalScaleAt()-
427*/-
428void QGraphicsItemAnimation::setScaleAt(qreal step, qreal sx, qreal sy)-
429{-
430 d->insertUniquePair(step, sx, &d->horizontalScale, "setScaleAt");-
431 d->insertUniquePair(step, sy, &d->verticalScale, "setScaleAt");-
432}
never executed: end of block
0
433-
434/*!-
435 Returns all explicitly inserted scales.-
436-
437 \sa verticalScaleAt(), horizontalScaleAt(), setScaleAt()-
438*/-
439QList<QPair<qreal, QPointF> > QGraphicsItemAnimation::scaleList() const-
440{-
441 QList<QPair<qreal, QPointF> > list;-
442 const int numScales = d->horizontalScale.size();-
443 list.reserve(numScales);-
444 for (int i = 0; i < numScales; ++i)
i < numScalesDescription
TRUEnever evaluated
FALSEnever evaluated
0
445 list << QPair<qreal, QPointF>(d->horizontalScale.at(i).step, QPointF(d->horizontalScale.at(i).value, d->verticalScale.at(i).value));
never executed: list << QPair<qreal, QPointF>(d->horizontalScale.at(i).step, QPointF(d->horizontalScale.at(i).value, d->verticalScale.at(i).value));
0
446-
447 return list;
never executed: return list;
0
448}-
449-
450/*!-
451 Returns the vertical shear for the item at the specified \a step value.-
452-
453 \sa setShearAt()-
454*/-
455qreal QGraphicsItemAnimation::verticalShearAt(qreal step) const-
456{-
457 check_step_valid(step, "verticalShearAt");-
458 return d->linearValueForStep(step, &d->verticalShear, 0);
never executed: return d->linearValueForStep(step, &d->verticalShear, 0);
0
459}-
460-
461/*!-
462 Returns the horizontal shear for the item at the specified \a step value.-
463-
464 \sa setShearAt()-
465*/-
466qreal QGraphicsItemAnimation::horizontalShearAt(qreal step) const-
467{-
468 check_step_valid(step, "horizontalShearAt");-
469 return d->linearValueForStep(step, &d->horizontalShear, 0);
never executed: return d->linearValueForStep(step, &d->horizontalShear, 0);
0
470}-
471-
472/*!-
473 Sets the shear of the item at the given \a step value using the horizontal and-
474 vertical shear factors specified by \a sh and \a sv.-
475-
476 \sa verticalShearAt(), horizontalShearAt()-
477*/-
478void QGraphicsItemAnimation::setShearAt(qreal step, qreal sh, qreal sv)-
479{-
480 d->insertUniquePair(step, sh, &d->horizontalShear, "setShearAt");-
481 d->insertUniquePair(step, sv, &d->verticalShear, "setShearAt");-
482}
never executed: end of block
0
483-
484/*!-
485 Returns all explicitly inserted shears.-
486-
487 \sa verticalShearAt(), horizontalShearAt(), setShearAt()-
488*/-
489QList<QPair<qreal, QPointF> > QGraphicsItemAnimation::shearList() const-
490{-
491 QList<QPair<qreal, QPointF> > list;-
492 const int numShears = d->horizontalShear.size();-
493 list.reserve(numShears);-
494 for (int i = 0; i < numShears; ++i)
i < numShearsDescription
TRUEnever evaluated
FALSEnever evaluated
0
495 list << QPair<qreal, QPointF>(d->horizontalShear.at(i).step, QPointF(d->horizontalShear.at(i).value, d->verticalShear.at(i).value));
never executed: list << QPair<qreal, QPointF>(d->horizontalShear.at(i).step, QPointF(d->horizontalShear.at(i).value, d->verticalShear.at(i).value));
0
496-
497 return list;
never executed: return list;
0
498}-
499-
500/*!-
501 Clears the scheduled transformations used for the animation, but-
502 retains the item and timeline.-
503*/-
504void QGraphicsItemAnimation::clear()-
505{-
506 d->xPosition.clear();-
507 d->yPosition.clear();-
508 d->rotation.clear();-
509 d->verticalScale.clear();-
510 d->horizontalScale.clear();-
511 d->verticalShear.clear();-
512 d->horizontalShear.clear();-
513 d->xTranslation.clear();-
514 d->yTranslation.clear();-
515}
never executed: end of block
0
516-
517/*!-
518 \fn void QGraphicsItemAnimation::setStep(qreal step)-
519-
520 Sets the current \a step value for the animation, causing the-
521 transformations scheduled at this step to be performed.-
522*/-
523void QGraphicsItemAnimation::setStep(qreal step)-
524{-
525 if (!check_step_valid(step, "setStep"))
!check_step_va...ep, "setStep")Description
TRUEnever evaluated
FALSEnever evaluated
0
526 return;
never executed: return;
0
527-
528 beforeAnimationStep(step);-
529-
530 d->step = step;-
531 if (d->item) {
d->itemDescription
TRUEnever evaluated
FALSEnever evaluated
0
532 if (!d->xPosition.isEmpty() || !d->yPosition.isEmpty())
!d->xPosition.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
!d->yPosition.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
0
533 d->item->setPos(posAt(step));
never executed: d->item->setPos(posAt(step));
0
534 if (!d->rotation.isEmpty()
!d->rotation.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
0
535 || !d->verticalScale.isEmpty()
!d->verticalScale.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
0
536 || !d->horizontalScale.isEmpty()
!d->horizontalScale.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
0
537 || !d->verticalShear.isEmpty()
!d->verticalShear.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
0
538 || !d->horizontalShear.isEmpty()
!d->horizontalShear.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
0
539 || !d->xTranslation.isEmpty()
!d->xTranslation.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
0
540 || !d->yTranslation.isEmpty()) {
!d->yTranslation.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
0
541 d->item->setMatrix(d->startMatrix * matrixAt(step));-
542 }
never executed: end of block
0
543 }
never executed: end of block
0
544-
545 afterAnimationStep(step);-
546}
never executed: end of block
0
547-
548/*!-
549 Resets the item to its starting position and transformation.-
550-
551 \obsolete-
552-
553 You can call setStep(0) instead.-
554*/-
555void QGraphicsItemAnimation::reset()-
556{-
557 if (!d->item)
!d->itemDescription
TRUEnever evaluated
FALSEnever evaluated
0
558 return;
never executed: return;
0
559 d->startPos = d->item->pos();-
560 d->startMatrix = d->item->matrix();-
561}
never executed: end of block
0
562-
563/*!-
564 \fn void QGraphicsItemAnimation::beforeAnimationStep(qreal step)-
565-
566 This method is meant to be overridden by subclassed that needs to-
567 execute additional code before a new step takes place. The-
568 animation \a step is provided for use in cases where the action-
569 depends on its value.-
570*/-
571void QGraphicsItemAnimation::beforeAnimationStep(qreal step)-
572{-
573 Q_UNUSED(step);-
574}
never executed: end of block
0
575-
576/*!-
577 \fn void QGraphicsItemAnimation::afterAnimationStep(qreal step)-
578-
579 This method is meant to be overridden in subclasses that need to-
580 execute additional code after a new step has taken place. The-
581 animation \a step is provided for use in cases where the action-
582 depends on its value.-
583*/-
584void QGraphicsItemAnimation::afterAnimationStep(qreal step)-
585{-
586 Q_UNUSED(step);-
587}
never executed: end of block
0
588-
589QT_END_NAMESPACE-
590-
591#include "moc_qgraphicsitemanimation.cpp"-
592-
593#endif // QT_NO_GRAPHICSVIEW-
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