I want to change the brightness of my screen with awful.widget.launcher. The
launcher should contain an icon, indicating the actual brightness. Clicking on
the launcher should open a menu to choose the brightness value in percent.
Problem: When clicking on the launcher, the icon is changing immediately to the
icon, which was first loaded after starting awesome, ignoring the actual
brightness. Choosing a value from the list of the menu will update the icon
properly. But if cancelling the menu, the wrong icon will remain.
For example, the brightness was 30% when starting awesome. I change the
brightness with the launcher to 100%. No problem. But now I click on the
launcher again: the launcher will show the 30% icon, despite the fact that I
have not chosen a value from the menu. Pressing Escape will cancel the menu,
but the wrong icon still remains: The brightness is 100% but the icon shows 30%.
mybrightness.lua (the global mybrightness_launcher will be added to my wibox):
local awful = require("awful")
local mybrightness_menu = awful.menu({ items =
{{"100%", function() awful.util.pread("xbacklight -time 0 -set 100");
brightness_update() end},
{" 30%", function() awful.util.pread("xbacklight -time 0 -set 30");
brightness_update() end}}})
mybrightness_launcher = awful.widget.launcher({image = "bright100.png", menu =
mybrightness_menu})
function brightness_update()
local max_brightness = awful.util.pread('cat
/sys/class/backlight/intel_backlight/max_brightness')
local actual_brightness = awful.util.pread('cat
/sys/class/backlight/intel_backlight/actual_brightness')
local brightness_percent = 0
if max_brightness ~= nil and actual_brightness ~= nil then
brightness_percent = actual_brightness * 100 / max_brightness
end
if brightness_percent > 50 then
brightness_icon = "bright100.png"
else
brightness_icon = "bright030.png"
end
mybrightness_launcher:set_image(brightness_icon)
end
brightness_update()
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