-- change color of wibars on numlock/capslock/scrolllock -- require("beautiful") local lockhl = { bg_lock = beautiful.bg_urgent, bg_normal = beautiful.bg_normal } local target_wibars = {} function lockhl:setup(wibars, bg_lock, bg_normal) target_wibars = wibars if bg_lock then self.bg_lock = bg_lock end if bg_normal then self.bg_normal = bg_normal end return lockhl end local function check_lock(lock, cb) awful.spawn.with_line_callback( 'bash -c "sleep 0.2; xset q | grep -Po \\"' .. lock .. ' Lock:\\\\s*\\\\K(on|off)\\" 2>&1"', { stdout = function(output) cb(output == "on") end } ) end function lockhl:target_color(is_on, lock) if is_on then if type(self.bg_lock) == 'table' then return self.bg_lock[lock] else return self.bg_lock end else return self.bg_normal end end function lockhl:on_lock(lock) check_lock(lock, function(is_on) local newbg = self:target_color(is_on, lock) for _, bar in pairs(target_wibars) do bar.bg = newbg end end) end return setmetatable(lockhl, { __call = function(_, lock) return function() lockhl:on_lock(lock) end end })