main.cpp Example File

animation/states/main.cpp

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  #include <QtWidgets>

  class Pixmap : public QGraphicsObject
  {
      Q_OBJECT
  public:
      Pixmap(const QPixmap &pix) : QGraphicsObject(), p(pix)
      {
      }

      void paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *) Q_DECL_OVERRIDE
      {
          painter->drawPixmap(QPointF(), p);
      }

      QRectF boundingRect() const Q_DECL_OVERRIDE
      {
          return QRectF( QPointF(0, 0), p.size());
      }

  private:
      QPixmap p;
  };

  class GraphicsView : public QGraphicsView
  {
  public:
      GraphicsView(QGraphicsScene *scene) : QGraphicsView(scene)
      {
      }

      virtual void resizeEvent(QResizeEvent *) Q_DECL_OVERRIDE
      {
          fitInView(sceneRect(), Qt::KeepAspectRatio);
      }
  };

  int main(int argc, char *argv[])
  {
      Q_INIT_RESOURCE(states);

      QApplication app(argc, argv);

      // Text edit and button
      QTextEdit *edit = new QTextEdit;
      edit->setText("asdf lkjha yuoiqwe asd iuaysd u iasyd uiy "
                    "asdf lkjha yuoiqwe asd iuaysd u iasyd uiy "
                    "asdf lkjha yuoiqwe asd iuaysd u iasyd uiy "
                    "asdf lkjha yuoiqwe asd iuaysd u iasyd uiy!");

      QPushButton *button = new QPushButton;
      QGraphicsProxyWidget *buttonProxy = new QGraphicsProxyWidget;
      buttonProxy->setWidget(button);
      QGraphicsProxyWidget *editProxy = new QGraphicsProxyWidget;
      editProxy->setWidget(edit);

      QGroupBox *box = new QGroupBox;
      box->setFlat(true);
      box->setTitle("Options");

      QVBoxLayout *layout2 = new QVBoxLayout;
      box->setLayout(layout2);
      layout2->addWidget(new QRadioButton("Herring"));
      layout2->addWidget(new QRadioButton("Blue Parrot"));
      layout2->addWidget(new QRadioButton("Petunias"));
      layout2->addStretch();

      QGraphicsProxyWidget *boxProxy = new QGraphicsProxyWidget;
      boxProxy->setWidget(box);

      // Parent widget
      QGraphicsWidget *widget = new QGraphicsWidget;
      QGraphicsLinearLayout *layout = new QGraphicsLinearLayout(Qt::Vertical, widget);
      layout->addItem(editProxy);
      layout->addItem(buttonProxy);
      widget->setLayout(layout);

      Pixmap *p1 = new Pixmap(QPixmap(":/digikam.png"));
      Pixmap *p2 = new Pixmap(QPixmap(":/akregator.png"));
      Pixmap *p3 = new Pixmap(QPixmap(":/accessories-dictionary.png"));
      Pixmap *p4 = new Pixmap(QPixmap(":/k3b.png"));
      Pixmap *p5 = new Pixmap(QPixmap(":/help-browser.png"));
      Pixmap *p6 = new Pixmap(QPixmap(":/kchart.png"));

      QGraphicsScene scene(0, 0, 400, 300);
      scene.setBackgroundBrush(scene.palette().window());
      scene.addItem(widget);
      scene.addItem(boxProxy);
      scene.addItem(p1);
      scene.addItem(p2);
      scene.addItem(p3);
      scene.addItem(p4);
      scene.addItem(p5);
      scene.addItem(p6);

      QStateMachine machine;
      QState *state1 = new QState(&machine);
      QState *state2 = new QState(&machine);
      QState *state3 = new QState(&machine);
      machine.setInitialState(state1);

      // State 1
      state1->assignProperty(button, "text", "Switch to state 2");
      state1->assignProperty(widget, "geometry", QRectF(0, 0, 400, 150));
      state1->assignProperty(box, "geometry", QRect(-200, 150, 200, 150));
      state1->assignProperty(p1, "pos", QPointF(68, 200)); // 185));
      state1->assignProperty(p2, "pos", QPointF(168, 200)); // 185));
      state1->assignProperty(p3, "pos", QPointF(268, 200)); // 185));
      state1->assignProperty(p4, "pos", QPointF(68 - 150, 48 - 150));
      state1->assignProperty(p5, "pos", QPointF(168, 48 - 150));
      state1->assignProperty(p6, "pos", QPointF(268 + 150, 48 - 150));
      state1->assignProperty(p1, "rotation", qreal(0));
      state1->assignProperty(p2, "rotation", qreal(0));
      state1->assignProperty(p3, "rotation", qreal(0));
      state1->assignProperty(p4, "rotation", qreal(-270));
      state1->assignProperty(p5, "rotation", qreal(-90));
      state1->assignProperty(p6, "rotation", qreal(270));
      state1->assignProperty(boxProxy, "opacity", qreal(0));
      state1->assignProperty(p1, "opacity", qreal(1));
      state1->assignProperty(p2, "opacity", qreal(1));
      state1->assignProperty(p3, "opacity", qreal(1));
      state1->assignProperty(p4, "opacity", qreal(0));
      state1->assignProperty(p5, "opacity", qreal(0));
      state1->assignProperty(p6, "opacity", qreal(0));

      // State 2
      state2->assignProperty(button, "text", "Switch to state 3");
      state2->assignProperty(widget, "geometry", QRectF(200, 150, 200, 150));
      state2->assignProperty(box, "geometry", QRect(9, 150, 190, 150));
      state2->assignProperty(p1, "pos", QPointF(68 - 150, 185 + 150));
      state2->assignProperty(p2, "pos", QPointF(168, 185 + 150));
      state2->assignProperty(p3, "pos", QPointF(268 + 150, 185 + 150));
      state2->assignProperty(p4, "pos", QPointF(64, 48));
      state2->assignProperty(p5, "pos", QPointF(168, 48));
      state2->assignProperty(p6, "pos", QPointF(268, 48));
      state2->assignProperty(p1, "rotation", qreal(-270));
      state2->assignProperty(p2, "rotation", qreal(90));
      state2->assignProperty(p3, "rotation", qreal(270));
      state2->assignProperty(p4, "rotation", qreal(0));
      state2->assignProperty(p5, "rotation", qreal(0));
      state2->assignProperty(p6, "rotation", qreal(0));
      state2->assignProperty(boxProxy, "opacity", qreal(1));
      state2->assignProperty(p1, "opacity", qreal(0));
      state2->assignProperty(p2, "opacity", qreal(0));
      state2->assignProperty(p3, "opacity", qreal(0));
      state2->assignProperty(p4, "opacity", qreal(1));
      state2->assignProperty(p5, "opacity", qreal(1));
      state2->assignProperty(p6, "opacity", qreal(1));

      // State 3
      state3->assignProperty(button, "text", "Switch to state 1");
      state3->assignProperty(p1, "pos", QPointF(0, 5));
      state3->assignProperty(p2, "pos", QPointF(0, 5 + 64 + 5));
      state3->assignProperty(p3, "pos", QPointF(5, 5 + (64 + 5) + 64));
      state3->assignProperty(p4, "pos", QPointF(5 + 64 + 5, 5));
      state3->assignProperty(p5, "pos", QPointF(5 + 64 + 5, 5 + 64 + 5));
      state3->assignProperty(p6, "pos", QPointF(5 + 64 + 5, 5 + (64 + 5) + 64));
      state3->assignProperty(widget, "geometry", QRectF(138, 5, 400 - 138, 200));
      state3->assignProperty(box, "geometry", QRect(5, 205, 400, 90));
      state3->assignProperty(p1, "opacity", qreal(1));
      state3->assignProperty(p2, "opacity", qreal(1));
      state3->assignProperty(p3, "opacity", qreal(1));
      state3->assignProperty(p4, "opacity", qreal(1));
      state3->assignProperty(p5, "opacity", qreal(1));
      state3->assignProperty(p6, "opacity", qreal(1));

      QAbstractTransition *t1 = state1->addTransition(button, SIGNAL(clicked()), state2);
      QSequentialAnimationGroup *animation1SubGroup = new QSequentialAnimationGroup;
      animation1SubGroup->addPause(250);
      animation1SubGroup->addAnimation(new QPropertyAnimation(box, "geometry"));
      t1->addAnimation(animation1SubGroup);
      t1->addAnimation(new QPropertyAnimation(widget, "geometry"));
      t1->addAnimation(new QPropertyAnimation(p1, "pos"));
      t1->addAnimation(new QPropertyAnimation(p2, "pos"));
      t1->addAnimation(new QPropertyAnimation(p3, "pos"));
      t1->addAnimation(new QPropertyAnimation(p4, "pos"));
      t1->addAnimation(new QPropertyAnimation(p5, "pos"));
      t1->addAnimation(new QPropertyAnimation(p6, "pos"));
      t1->addAnimation(new QPropertyAnimation(p1, "rotation"));
      t1->addAnimation(new QPropertyAnimation(p2, "rotation"));
      t1->addAnimation(new QPropertyAnimation(p3, "rotation"));
      t1->addAnimation(new QPropertyAnimation(p4, "rotation"));
      t1->addAnimation(new QPropertyAnimation(p5, "rotation"));
      t1->addAnimation(new QPropertyAnimation(p6, "rotation"));
      t1->addAnimation(new QPropertyAnimation(p1, "opacity"));
      t1->addAnimation(new QPropertyAnimation(p2, "opacity"));
      t1->addAnimation(new QPropertyAnimation(p3, "opacity"));
      t1->addAnimation(new QPropertyAnimation(p4, "opacity"));
      t1->addAnimation(new QPropertyAnimation(p5, "opacity"));
      t1->addAnimation(new QPropertyAnimation(p6, "opacity"));

      QAbstractTransition *t2 = state2->addTransition(button, SIGNAL(clicked()), state3);
      t2->addAnimation(new QPropertyAnimation(box, "geometry"));
      t2->addAnimation(new QPropertyAnimation(widget, "geometry"));
      t2->addAnimation(new QPropertyAnimation(p1, "pos"));
      t2->addAnimation(new QPropertyAnimation(p2, "pos"));
      t2->addAnimation(new QPropertyAnimation(p3, "pos"));
      t2->addAnimation(new QPropertyAnimation(p4, "pos"));
      t2->addAnimation(new QPropertyAnimation(p5, "pos"));
      t2->addAnimation(new QPropertyAnimation(p6, "pos"));
      t2->addAnimation(new QPropertyAnimation(p1, "rotation"));
      t2->addAnimation(new QPropertyAnimation(p2, "rotation"));
      t2->addAnimation(new QPropertyAnimation(p3, "rotation"));
      t2->addAnimation(new QPropertyAnimation(p4, "rotation"));
      t2->addAnimation(new QPropertyAnimation(p5, "rotation"));
      t2->addAnimation(new QPropertyAnimation(p6, "rotation"));
      t2->addAnimation(new QPropertyAnimation(p1, "opacity"));
      t2->addAnimation(new QPropertyAnimation(p2, "opacity"));
      t2->addAnimation(new QPropertyAnimation(p3, "opacity"));
      t2->addAnimation(new QPropertyAnimation(p4, "opacity"));
      t2->addAnimation(new QPropertyAnimation(p5, "opacity"));
      t2->addAnimation(new QPropertyAnimation(p6, "opacity"));

      QAbstractTransition *t3 = state3->addTransition(button, SIGNAL(clicked()), state1);
      t3->addAnimation(new QPropertyAnimation(box, "geometry"));
      t3->addAnimation(new QPropertyAnimation(widget, "geometry"));
      t3->addAnimation(new QPropertyAnimation(p1, "pos"));
      t3->addAnimation(new QPropertyAnimation(p2, "pos"));
      t3->addAnimation(new QPropertyAnimation(p3, "pos"));
      t3->addAnimation(new QPropertyAnimation(p4, "pos"));
      t3->addAnimation(new QPropertyAnimation(p5, "pos"));
      t3->addAnimation(new QPropertyAnimation(p6, "pos"));
      t3->addAnimation(new QPropertyAnimation(p1, "rotation"));
      t3->addAnimation(new QPropertyAnimation(p2, "rotation"));
      t3->addAnimation(new QPropertyAnimation(p3, "rotation"));
      t3->addAnimation(new QPropertyAnimation(p4, "rotation"));
      t3->addAnimation(new QPropertyAnimation(p5, "rotation"));
      t3->addAnimation(new QPropertyAnimation(p6, "rotation"));
      t3->addAnimation(new QPropertyAnimation(p1, "opacity"));
      t3->addAnimation(new QPropertyAnimation(p2, "opacity"));
      t3->addAnimation(new QPropertyAnimation(p3, "opacity"));
      t3->addAnimation(new QPropertyAnimation(p4, "opacity"));
      t3->addAnimation(new QPropertyAnimation(p5, "opacity"));
      t3->addAnimation(new QPropertyAnimation(p6, "opacity"));

      machine.start();

      GraphicsView view(&scene);

      view.show();

      return app.exec();
  }

  #include "main.moc"