Error creating a animated menu

[CassioTC]

Hi,

I'm trying create a animated menu, i'ts a simple animation, just show and hide the menu.

But I get a error and can't figure that out

Menu *menu = new Menu();
 
    menu->setPos(0, scene->sceneRect().center().y() - (menu->boundingRect().center().y()*scaleT));
 
    scene->addItem(menu);
 
    setScene(scene);
 
    j->setPos(350,0);
    i->setPos(400,0);
 
    QPushButton *button = new QPushButton;
 
    //animaçao menu
    QStateMachine machine;
    QState *state_hide = new QState(&machine);
    QState *state_show = new QState(&machine);
    machine.setInitialState(state_show);
 
    state_show->assignProperty(menu, "pos", QPointF(110,200));
 
    state_hide->assignProperty(menu, "pos", QPointF(800,200));
 
    QAbstractTransition *t1 = state_show->addTransition(button, SIGNAL(clicked()),state_hide);
    QSequentialAnimationGroup *animation1SubGroup = new QSequentialAnimationGroup;
    animation1SubGroup->addPause(250);
 
    t1->addAnimation(animation1SubGroup);
    t1->addAnimation(new QPropertyAnimation(menu, "pos"));
 
    QAbstractTransition *t2 = state_hide->addTransition(button, SIGNAL(clicked()), state_show);
    t2->addAnimation(new QPropertyAnimation(menu, "pos"));
 
    machine.start();

Menu *menu = new Menu();

    menu->setPos(0, scene->sceneRect().center().y() - (menu->boundingRect().center().y()*scaleT));

    scene->addItem(menu);

    setScene(scene);

    j->setPos(350,0);
    i->setPos(400,0);

    QPushButton *button = new QPushButton;

    //animaçao menu
    QStateMachine machine;
    QState *state_hide = new QState(&machine);
    QState *state_show = new QState(&machine);
    machine.setInitialState(state_show);

    state_show->assignProperty(menu, "pos", QPointF(110,200));

    state_hide->assignProperty(menu, "pos", QPointF(800,200));

    QAbstractTransition *t1 = state_show->addTransition(button, SIGNAL(clicked()),state_hide);
    QSequentialAnimationGroup *animation1SubGroup = new QSequentialAnimationGroup;
    animation1SubGroup->addPause(250);

    t1->addAnimation(animation1SubGroup);
    t1->addAnimation(new QPropertyAnimation(menu, "pos"));

    QAbstractTransition *t2 = state_hide->addTransition(button, SIGNAL(clicked()), state_show);
    t2->addAnimation(new QPropertyAnimation(menu, "pos"));

    machine.start();

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class Menu: public QGraphicsRectItem
{
public:
    Menu();
 
protected:
    void paint( QPainter *, const QStyleOptionGraphicsItem *option, QWidget *widget );
    void mousePressEvent(QGraphicsSceneMouseEvent *event);
 
private:
    QImage *menu_image;
};

class Menu: public QGraphicsRectItem
{
public:
    Menu();

protected:
    void paint( QPainter *, const QStyleOptionGraphicsItem *option, QWidget *widget );
    void mousePressEvent(QGraphicsSceneMouseEvent *event);

private:
    QImage *menu_image;
};

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Menu::Menu()
{
    visible = false;
 
    menu_image = new QImage("C:/menu.png");
    setRect(0, 0, menu_image->width(), menu_image->height());
    setFlag(ItemIsMovable);
    float itemScale = (float) QApplication::desktop()->width() / (float)1920;
    this->setScale(itemScale);
 
    Botao *button1 = new Botao(QImage("C:/botao.png"), QImage("C:/botao2.png"), "Iluminação Terreo");
    button1->setParentItem(this);
 
    button1->setPos(0,226);
}

Menu::Menu()
{
    visible = false;

    menu_image = new QImage("C:/menu.png");
    setRect(0, 0, menu_image->width(), menu_image->height());
    setFlag(ItemIsMovable);
    float itemScale = (float) QApplication::desktop()->width() / (float)1920;
    this->setScale(itemScale);

    Botao *button1 = new Botao(QImage("C:/botao.png"), QImage("C:/botao2.png"), "Iluminação Terreo");
    button1->setParentItem(this);

    button1->setPos(0,226);
}

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Errors:

mainview.cpp:67: error: no matching function for call to 'QState::assignProperty(Menu*&, const char [4], QPointF)'
../src/corelib/statemachine/qstate.h:94: note: candidates are: void QState::assignProperty(QObject*, const char*, const QVariant&)
mainview.cpp:69: error: no matching function for call to 'QState::assignProperty(Menu*&, const char [4], QPointF)'
../src/corelib/statemachine/qstate.h:94: note: candidates are: void QState::assignProperty(QObject*, const char*, const QVariant&)
mainview.cpp:76: error: no matching function for call to 'QPropertyAnimation::QPropertyAnimation(Menu*&, const char [4])'
../src/corelib/animation/qpropertyanimation.h:79: note: candidates are: QPropertyAnimation::QPropertyAnimation(const QPropertyAnimation&)
../src/corelib/animation/qpropertyanimation.h:64: note: QPropertyAnimation::QPropertyAnimation(QObject*, const QByteArray&, QObject*)
../src/corelib/animation/qpropertyanimation.h:63: note: QPropertyAnimation::QPropertyAnimation(QObject*)
mainview.cpp:79: error: no matching function for call to 'QPropertyAnimation::QPropertyAnimation(Menu*&, const char [4])'
../src/corelib/animation/qpropertyanimation.h:79: note: candidates are: QPropertyAnimation::QPropertyAnimation(const QPropertyAnimation&)
../src/corelib/animation/qpropertyanimation.h:64: note: QPropertyAnimation::QPropertyAnimation(QObject*, const QByteArray&, QObject*)
../src/corelib/animation/qpropertyanimation.h:63: note: QPropertyAnimation::QPropertyAnimation(QObject*)

[wysota]

QGraphicsRectItem does not inherit QObject.

[CassioTC]

Thanks for answer.

I just add the QObject in the class:

class Menu: public QObject, public QGraphicsRectItem


Now compile with no errors, but doesn't work.
The menu stay in the same position.

[wysota]

Why would anything change position? Did you read the animation framework docs before trying to use it?