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-- See http://awesome.naquadah.org/wiki/Volume_control_and_display
volume_widget = widget({ type = "textbox", name = "tb_volume",
align = "right" })
function update_volume(widget)
local fd = io.popen("amixer sget Master")
local status = fd:read("*all")
fd:close()
local volume = tonumber(string.match(status, "(%d?%d?%d)%%")) / 100
-- volume = string.format("% 3d", volume)
status = string.match(status, "%[(o[^%]]*)%]")
-- starting colour
local sr, sg, sb = 0x3F, 0x3F, 0x3F
-- ending colour
local er, eg, eb = 0xDC, 0xDC, 0xCC
local ir = volume * (er - sr) + sr
local ig = volume * (eg - sg) + sg
local ib = volume * (eb - sb) + sb
interpol_colour = string.format("%.2x%.2x%.2x", ir, ig, ib)
if string.find(status, "on", 1, true) then
volume = " <span background='#" .. interpol_colour .. "'> </span>"
else
volume = " <span color='red' background='#" .. interpol_colour .. "'> M </span>"
end
widget.text = volume
end
volumeTimer = timer({ timeout = 1 })
volumeTimer:add_signal("timeout", function () update_volume(volume_widget) end)
volumeTimer:start()
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