Swipeable.getSwipeArea

void getSwipeArea(adw.types.NavigationDirection navigationDirection, bool isDrag, out gdk.rectangle.Rectangle rect)

Gets the area self can start a swipe from for the given direction and gesture type.

This can be used to restrict swipes to only be possible from a certain area, for example, to only allow edge swipes, or to have a draggable element and ignore swipes elsewhere.

If not implemented, the default implementation returns the allocation of self, allowing swipes from anywhere.

Parameters

`navigationDirection`	the direction of the swipe
`isDrag`	whether the swipe is caused by a dragging gesture
`rect`	a pointer to a rectangle to store the swipe area