Modifier key to create new layer from floating selection
Submitted by quazgar
I propose to implement the following behaviour:
While working on a floating selection, clicking outside the floating selection with a modifier key pressed ("Alt" seems to be free for that at the moment), a new layer shall be created in the same way as pressing the "new layer" button in the layers dialog.
Current status: When the mouse is outside the floating selection, a single click will anchor the floating selection to its current "parent" layer. This behaviour is also announced in the status bar.
Rationale: Creating a new layer from a floating selection is needed about as often (if not more often) as anchoring it. Thus a handy way to do this without moving the mouse across the desktop should be provided. There seems to be a default shortcut for this already (Ctrl+Shit+N), but esp. for tablet users a single click would be faster. Alt+click doesn't seem to be used for anything special at the moment yet.