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