QGraphicscene animation problem

[mahadin]

i wana to work with animation , based on "animatedtiles" example .
i write a seprate class for creating QGraphicscene , like this :

class First_win
{
 public :
  First_win(){

      Q_INIT_RESOURCE(animatedtiles);



      QPixmap kineticPix(":/images/kinetic.png");


      scene.setSceneRect(-350, -350, 700, 700);



      QList<Pixmap *> items;
      for (int i = 0; i < 64; ++i) {
          Pixmap *item = new Pixmap(kineticPix);
          item->setOffset(-kineticPix.width()/2, -kineticPix.height()/2);
          item->setZValue(i);

          items << item;
          scene.addItem(item);

      }

      // Buttons
      QGraphicsItem *buttonParent = new QGraphicsRectItem;
      Button *ellipseButton = new Button(QPixmap(":/images/ellipse.png"), buttonParent);
      Button *figure8Button = new Button(QPixmap(":/images/figure8.png"), buttonParent);
      Button *randomButton = new Button(QPixmap(":/images/random.png"), buttonParent);
      Button *tiledButton = new Button(QPixmap(":/images/tile.png"), buttonParent);
      Button *centeredButton = new Button(QPixmap(":/images/centered.png"), buttonParent);

      ellipseButton->setPos(-100, -100);
      figure8Button->setPos(100, -100);
      randomButton->setPos(0, 0);
      tiledButton->setPos(-100, 100);
      centeredButton->setPos(100, 100);

      scene.addItem(buttonParent);
      buttonParent->setTransform(QTransform::fromScale(0.5, 0.5), true);
      buttonParent->setPos(0, 0);
      buttonParent->setZValue(65);

      // States
      QState *rootState = new QState;
      QState *ellipseState = new QState(rootState);
      QState *figure8State = new QState(rootState);
      QState *randomState = new QState(rootState);
      QState *tiledState = new QState(rootState);
      QState *centeredState = new QState(rootState);

      // Values
      for (int i = 0; i < items.count(); ++i) {
          Pixmap *item = items.at(i);
          // Ellipse
          ellipseState->assignProperty(item, "pos",
                                           QPointF(cos((i / 63.0) * 6.28) * 250,
                                                   sin((i / 63.0) * 6.28) * 250));

          // Figure 8
          figure8State->assignProperty(item, "pos",
                                           QPointF(sin((i / 63.0) * 6.28) * 250,
                                                   sin(((i * 2)/63.0) * 6.28) * 250));

          // Random
          randomState->assignProperty(item, "pos",
                                          QPointF(-250 + qrand() % 500,
                                                  -250 + qrand() % 500));

          // Tiled
          tiledState->assignProperty(item, "pos",
                                         QPointF(((i % 8) - 4) * kineticPix.width() + kineticPix.width() / 2,
                                                 ((i / 8) - 4) * kineticPix.height() + kineticPix.height() / 2));

          // Centered
          centeredState->assignProperty(item, "pos", QPoint(0,0));
      }

      QStateMachine states;
      states.addState(rootState);
      states.setInitialState(rootState);
      rootState->setInitialState(centeredState);

      QParallelAnimationGroup *group = new QParallelAnimationGroup;
      for (int i = 0; i < items.count(); ++i) {
          QPropertyAnimation *anim = new QPropertyAnimation(items[i], "pos");
          anim->setDuration(750 + i * 25);
          //anim->setDuration(1000);
          anim->setEasingCurve(QEasingCurve::InOutBack);
          group->addAnimation(anim);
      }
      QAbstractTransition *trans = rootState->addTransition(ellipseButton, SIGNAL(pressed()), ellipseState);
      trans->addAnimation(group);

      trans = rootState->addTransition(figure8Button, SIGNAL(pressed()), figure8State);
      trans->addAnimation(group);

      trans = rootState->addTransition(randomButton, SIGNAL(pressed()), randomState);
      trans->addAnimation(group);

      trans = rootState->addTransition(tiledButton, SIGNAL(pressed()), tiledState);
      trans->addAnimation(group);

      trans = rootState->addTransition(centeredButton, SIGNAL(pressed()), centeredState);
      trans->addAnimation(group);

      QTimer timer;
      timer.start(125);
      timer.setSingleShot(true);
      trans = rootState->addTransition(&timer, SIGNAL(timeout()), ellipseState);
      trans->addAnimation(group);

      states.start();


  }


QGraphicsScene scene ;


};

#endif // MAINWINDOW_H
 

and use this class on main :

 QPixmap bgPix(":/images/Time-For-Lunch-2.jpg");

    First_win fw ;

    View *view = new View(&(fw.scene));
    view->setWindowTitle(QT_TRANSLATE_NOOP(QGraphicsView, "Animated Tiles"));
    view->setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate);
    view->setBackgroundBrush(bgPix);
    view->setCacheMode(QGraphicsView::CacheBackground);
    view->setRenderHints(QPainter::Antialiasing | QPainter::SmoothPixmapTransform);
    view->show();

bye this codes , the aplication window are shown but animations not work

[SGaist]

Hi,

Your state machine and timer are destroyed at the end of the constructor of First_win thus what's related to them won't execute.