Prevent tap gestures in CarouselView items when it is scrolling

[Kapusch]

Hi, just a quick question, is there an equivalent of ScrollEnded event to prevent tap gestures on items when the CarouselView is actually scrolling?

Asking as I just noticed the IsDragging property and the Scrolled event, which are not ideal considering the IsDragging becomes false as soon as user has released finger.

I couldn't find a similar ticket, let me know if I should log this improvement behaviour, thanks.

[rokmeglic71]

I think official documentation on detecting scrolling for CarouselView can help you get started.

[Kapusch]

Hi @rokmeglic71 , thanks for your answer, but your link does not work.
Also, I had already checked the official document and what it says here is:

The IsDragging property can be examined to determine whether the CarouselView is currently scrolling through items.

I tested and IsDragging property becomes false as soon as user releases finger, which wasn't helping if I wanted to prevent PointerReleased gesture event when IsDragging is true.

In addition, CarouselView defines a Scrolled event which is fired to indicate that scrolling occurred. This event should be consumed when data about the scroll is required.

And this does not indicate when user stopped scrolling.

[Kapusch]

However, reading this again:

I tested and IsDragging property becomes false as soon as user releases finger, which wasn't helping if I wanted to prevent PointerReleased gesture event when IsDragging is true.

It made me realize that I can subscribe to the CarouselView.PropertyChanged event and check when the IsDragging is changed from true to false.

[Kapusch]

Here's what suits my needs:

private void OnPropertyChanged(object? sender, PropertyChangedEventArgs e)
{
	if (
		e.PropertyName == nameof(CarouselView.IsDragging)
		&& sender is CarouselView carouselOfCards
		&& carouselOfCards.IsDragging
	)
	{
		isCardCommandEnabled = false;
	}
}

And so, because IsDragging is changed to true and isCardCommandEnabled is changed to false, then my command can't execute.
However, if I detect PointerPressed and IsDragging is defined to false, then I must re-enable the command execution.