MouseRegion for Touchscreens about flutter HOT 3 OPEN

The use case in this issue is similar to the one at #140471. Could you check if it can assemble this?

from flutter.

The use case in this issue is similar to the one described in #140471. Could you check if it can assemble this?

The use case is similar, but I don't need an out-of-the-box solution like the one he wants.

I have already built a multi-select feature in my gallery app. However, the only way to select items now is by individually selecting each one, and I have not yet integrated a "drag-to-select" feature, which is available in most gallery apps.

To build drag-to-select, I was looking for ways to call a callback when the touch pointer enters a widget (a photo in my gallery, in this case) so I can trigger selection for that photo. I discovered the MouseRegion widget, but unfortunately, it doesn't work for touch screens. I was wondering if it's easy to create a similar widget like MouseRegion or make MouseRegion support touchscreens

I tried to figure out how MouseRegion works internally, but had no luck. I would love to create this and contribute to Flutter if you could let me know what documentation to read to understand it better.

from flutter.

I have the same thought as a user shared at #140471 (comment): it should be built with a new package rather than a built-in feature. Despite that, I will label this to see other's thoughts.

Perhaps #109455 (DragTarget.onWillAccept should trigger when the widget appears under a dragged item (similar toMouseRegion.onEnter)) could be related to this.

from flutter.