Selector to resize views

Let's say I want to give the user the ability to resize a view by presenting a white rectangle with dots in the corners which he can drag around. The resizing itself it pretty easy but my problem is the rectangle.

If I place it exactly at the the edges of the view then one quarter of the dots will be cut off. By adding some margin or padding to the target two view next to each other will be pushed away from each other... Also, according to the material design guide lines, a touch target should be 48dp but my dots shouldn't fill that whole space.

So how should I do this? Is all of this possible with a selector or do you need a helper view for this? Also how would something like this work in a Recaclerview where I can resize items?

from Selector to resize views