createRecognizer method

@override DelayedMultiDragGestureRecognizer createRecognizer(GestureMultiDragStartCallback onStart)

Creates a gesture recognizer that recognizes the start of the drag.

Subclasses can override this function to customize when they start recognizing a drag.

Implementation

@override
DelayedMultiDragGestureRecognizer createRecognizer(GestureMultiDragStartCallback onStart) {
  return DelayedMultiDragGestureRecognizer(
    delay: delay,
    allowedButtonsFilter: allowedButtonsFilter,
  )..onStart = (Offset position) {
      final Drag? result = onStart(position);
      if (result != null && hapticFeedbackOnStart) {
        HapticFeedback.selectionClick();
      }
      return _ProxyDrag(
        result,
        onUpdateCallback: (DragUpdateDetails details) {
          onDragUpdate?.call(details);
        },
      );
    };
}