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38 lines
1.1 KiB
Lua
38 lines
1.1 KiB
Lua
-- Provides:
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-- evil::brightness
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-- percentage (integer)
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local awful = require("awful")
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-- Subscribe to backlight changes
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-- Requires inotify-tools
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local brightness_subscribe_script = [[
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bash -c "
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while (inotifywait -e modify /sys/class/backlight/?*/brightness -qq) do echo; done
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"]]
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local brightness_script = [[
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sh -c "
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light -G
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"]]
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local emit_brightness_info = function()
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awful.spawn.with_line_callback(brightness_script, {
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stdout = function(line)
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percentage = math.floor(tonumber(line))
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awesome.emit_signal("evil::brightness", percentage)
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end
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})
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end
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-- Run once to initialize widgets
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emit_brightness_info()
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-- Kill old inotifywait process
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awful.spawn.easy_async_with_shell("ps x | grep \"inotifywait -e modify /sys/class/backlight\" | grep -v grep | awk '{print $1}' | xargs kill", function ()
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-- Update brightness status with each line printed
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awful.spawn.with_line_callback(brightness_subscribe_script, {
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stdout = function(_)
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emit_brightness_info()
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end
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})
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end)
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