ConstraintsTransformBox

Relevant PRs:

Deprecated in #78673

Removed in #111711

DragAnchor, Draggable.dragAnchor & LongPressDraggable.dragAnchor

Supported by Flutter Fix: yes

The enum DragAnchor, and its uses in Draggable.dragAnchor &
LongPressDraggable.dragAnchor were deprecated in v2.1.
Use dragAnchorStrategy instead.

This change allowed for more accurate feedback of the draggable widget when used
in conjunction with other widgets like Stack and InteractiveViewer.

Migration guide

Code before migration:

Draggable

draggable

Draggable

();

draggable

Draggable

dragAnchor:

DragAnchor

child

);

draggable