Hi all
I have a class which is drived from QAbstractAnimation and works as i expected. This class moves a text on a line. I want add QState to the code, so when the text starts the movement its state become start and when reaches the end of line, the state is changed to end.
I wrote the following code, but it doesn't work. Can you help me?
Qt Code: 
  1. class LineAnimator : public QAbstractAnimation
  2. {
  3. public:
  4. LineAnimator(QPointF start, QPointF end, QGraphicsItem* shape, QObject* parent=0) : 
  5.   QAbstractAnimation(parent), mShape(shape)
  6.   {
  7.       path.moveTo(start);
  8.       path.lineTo(end);
  9.   }
  10.  
  11. virtual int duration() const { return 1000; }
  12.  
  13. virtual void updateCurrentTime(int currentTime)
  14. {
  15.     mShape->setPos( path.pointAtPercent(qreal(currentTime) / 1000) );
  16. }
  17.  
  18. private:
  20. QGraphicsItem* mShape;
  21. };
  22.  
  23. int main(int argc, char *argv[])
  24. {
  25. QApplication a(argc, argv);
  26.  
  27. QGraphicsScene* scene = new QGraphicsScene(0, 0, 650, 400);
  28. QGraphicsView *view = new QGraphicsView(scene);
  29.  
  30. QGrapgicsSimpleText* digit_1 = new QGrapgicsSimpleText;
  31. digit_1->setText(QString::number(1));
  32.  
  33. LineAnimator* lineAnimator = new LineAnimator(QPointF(50, 50),
  34.                                               QPointF(250, 50),
  35.                                               digit_1);
  36. scene->addItem(digit_1);
  37.  
  38. // If i use lineAnimator->start() it move the '1' on a line.
  39.  
  40. QStateMachine* machine = new QStateMachine();
  41. QState*                start = new QState(machine);
  42. QState*                  end = new QState(machine);
  43. machine->setInitialState(start);
  44.  
  45. start->setProperty("pos", QPointF(50, 50));
  46. end->setProperty("pos", QPointF(250, 50));
  47.  
  48. QAbstractTransition* t1 = start->addTransition(start, SIGNAL(entered()), end);
  49. t1->addAnimation(lineAnimator);
  50.  
  51. QAbstractTransition* t2 = end->addTransition(end, SIGNAL(entered()), start);
  52.  
  53. machine->start();   // Don't do anything. Just shows '1' on the screen
  54.  
  55. view->show();
  56.  
  57. return a.exec();
  58. }
To copy to clipboard, switch view to plain text mode 

Thanks in advanced.