Creating custom animation by altering the size of a widget in loop.

[Ahti]

I am trying to create a custom animation that would keep decreasing or increasing the size of widget in a loop with a custom delay function ( that delays the time for few seconds ) . but somehow its not working here is the code :

void delay(unsigned int sec){

    clock_t goal = sec + clock();
    while (goal > clock());
}

void RamadanTimes::on_menucontroller_clicked(){

    if (menubar->isVisible()){
        for (int limit = 150;limit > 0;limit -= 10){
            menubar->setGeometry(4,71,limit,440);
            menubar->show();
            delay(1000);
        }
        menubar->hide();
    }else{
        for (int limit = 20;limit != 160;limit += 10 ){
            menubar->setGeometry(4,71,limit,440);
            menubar->show();
            delay(1000);
        }
    }
    menubar->setGeometry(4,71,160,440); // original size of menubar 
}

Thanks.

[SGaist]

Hi,

What about a QPropertyAnimation ?

Hope it helps

[jsulm]

@Ahti Well, it cannot work like this: you're blocking the event loop. Do not block the Qt event loop ever!
Take a look at what @SGaist suggested or use QTimer.

[Ahti]

@SGaist Yeah okay how can i use QPropertyAnimation in my example ?

[jsulm]

@Ahti Did you read the documentation?
There is an example doing exactly what you want to do:

QPropertyAnimation *animation = new QPropertyAnimation(myWidget, "geometry");
animation->setDuration(10000);
animation->setStartValue(QRect(0, 0, 100, 30));
animation->setEndValue(QRect(250, 250, 100, 30));

animation->start();

http://doc.qt.io/qt-5/qpropertyanimation.html

[Ahti]

@jsulm yeah i did read the documentation but i quiet didn't get it. okay leave it i will look into it myself that way i would learn alot right ?

thanks for your help... God bless you brother :)

[jsulm]

@Ahti Yes, learning by doing is a good idea :-)

[Pradeep Kumar]

Hi,

@Ahti

U have marked as solved, if u have any queries while doing , u can again ask in this topic.
have a nice day, cheers,

Thanks,

[Ahti]

@Pradeep-Kumar okay brother as you say :D

[Pradeep Kumar]

@Ahti

Happy coding brother.

Thanks,