+++ /dev/null
---[[
-
- 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