For gesture interactions suitable for trackpad usage

Using GestureDetector

No change is needed, GestureDetector automatically processes trackpad
gesture events and triggers callbacks if recognized.

Using GestureRecognizer and Listener

Ensure that onPointerPanZoomStart is passed through to each recognizer from the
Listener. The addPointerPanZoom method of `GestureRecognizer must be called
for it to show interest and start tracking each trackpad gesture.

Code before migration:

void

main

()

runApp

Foo

());

class

Foo

extends

StatefulWidget

late

final

PanGestureRecognizer

recognizer

@override

void

initState

()

super