title: Godot: detect if a pressed mouse is above button
body: <p>this is one of those issues where I believe there must be an incredibly simple way to do it and I still can't figure it out. Is there any way to figure out if my mouse (or finger on a touchscreen) is above a Button (any Button-Node) or not while it's being held pressed? Maybe something like &quot;self global position&quot;...? Something that immediately recognizes when leaving or entering the area while being held down.</p>
  <p>The problem is that func _on_Button_mouse_exited(): does only fire at release but not at the moment of exiting. It works with CollisionShape2D, but obviously not with Buttons. I want it to emit a Signal the moment my finger slips off the Button.</p>
  <p>Any help is much appreciated!</p>