love.graphics.hasFocus
 Available since LÖVE 0.8.0 and removed in LÖVE 0.9.0  
 Moved to the love.window module as love.window.hasFocus. 
Checks if the game window has keyboard focus.
Function
Synopsis
focus = love.graphics.hasFocus( )
Arguments
None.
Returns
boolean focus- True if the window has the focus or false if not.
 
See Also
 
    © 2006–2020 LÖVE Development Team
Licensed under the GNU Free Documentation License, Version 1.3.
    https://love2d.org/wiki/love.graphics.hasFocus