55 lines
1.7 KiB
Lua
55 lines
1.7 KiB
Lua
|
--[[
|
||
|
|
|
||
|
|
Licensed under GNU General Public License v2
|
||
|
|
* (c) 2017, Luca CPZ
|
||
|
|
* (c) 2014, blueluke <http://github.com/blueluke>
|
||
|
|
|
||
|
|
--]]
|
||
|
|
|
||
|
|
local async = require("lain.helpers").async
|
||
|
|
local awful = require("awful")
|
||
|
|
local execute = os.execute
|
||
|
|
local type = type
|
||
|
|
|
||
|
|
-- Redshift
|
||
|
|
-- lain.widget.contrib.redshift
|
||
|
|
local redshift = { active = false, pid = nil }
|
||
|
|
|
||
|
|
function redshift:start()
|
||
|
|
execute("pkill redshift")
|
||
|
|
awful.spawn.with_shell("redshift -x") -- clear adjustments
|
||
|
|
redshift.pid = awful.spawn.with_shell("redshift")
|
||
|
|
redshift.active = true
|
||
|
|
if type(redshift.update_fun) == "function" then
|
||
|
|
redshift.update_fun(redshift.active)
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
function redshift:toggle()
|
||
|
|
async({ awful.util.shell, "-c", string.format("ps -p %d -o pid=", redshift.pid) }, function(f)
|
||
|
|
if f and #f > 0 then -- redshift is running
|
||
|
|
-- Sending -USR1 toggles redshift (See project website)
|
||
|
|
execute("pkill -USR1 redshift")
|
||
|
|
redshift.active = not redshift.active
|
||
|
|
else -- not started or killed, (re)start it
|
||
|
|
redshift:start()
|
||
|
|
end
|
||
|
|
redshift.update_fun(redshift.active)
|
||
|
|
end)
|
||
|
|
end
|
||
|
|
|
||
|
|
-- Attach to a widget
|
||
|
|
-- Provides a button which toggles redshift on/off on click
|
||
|
|
-- @param widget: Widget to attach to.
|
||
|
|
-- @param fun: Function to be run each time redshift is toggled (optional).
|
||
|
|
-- Use it to update widget text or icons on status change.
|
||
|
|
function redshift:attach(widget, fun)
|
||
|
|
redshift.update_fun = fun or function() end
|
||
|
|
if not redshift.pid then redshift:start() end
|
||
|
|
if widget then
|
||
|
|
widget:buttons(awful.util.table.join(awful.button({}, 1, function () redshift:toggle() end)))
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
return redshift
|