Add pulseaudio widget

awk/pulseaudio-sink.awk

@@ -0,0 +1,11 @@
+# only read from specified sink
+$1 == "Sink" { if (int($2) == sink) { read = 1 }
+ else { read = 0 } }
+# skip to next line if we're not reading
+!read { next }
+# average left and right speaker
+$1 == "Volume:" { vol = (int($5) + int($12)) / 2 }
+$1 == "Mute:" { m = $2 }
+# return volume negated if sink is muted
+END { if (m == "yes") { vol = -vol }
+ print vol }

widgets/pulseaudio.lua

@@ -0,0 +1,159 @@
+-- usage {{{1
+--[[
+
+Requirements:
+ - Battery icons in theme:
+ - beautiful["icon-pulseaudio-V"] = <filename>
+ where V is max, med, min, 0 and muted
+
+Configuration in rc.lua, here shown with the default settings:
+
+local conky = require("conky")
+conky.config.pulseaudio = {
+ sink = 0, the sink to target
+ step = 10, volume percentage to increment/decrement
+ slider = { configuration of the slider appearance, see:
+ forced_width = 50, awesomewm.org/apidoc/wibox.widget.slider.html
+ handle_width = 3,
+ bar_height = 3,
+ },
+}
+--]]
+
+
+-- init {{{1
+local beautiful = require("beautiful")
+local awful = require("awful")
+local wibox = require("wibox")
+local util = require("conky/util")
+
+local settings = {
+ sink = 0,
+ step = 10,
+ slider = {},
+}
+
+local slider_defaults = {
+ value = 50,
+ forced_width = 50,
+ handle_width = 3,
+ bar_height = 3,
+}
+
+local slider_immutable = {
+ minimum = 0,
+ maximum = 100,
+ visible = false,
+ widget = wibox.widget.slider,
+}
+
+local function setter_for(sink) -- {{{1
+ local cmd = "pactl set-sink-mute " .. sink .. " false;" ..
+ "pactl set-sink-volume " .. sink .. " "
+ return function(perc)
+ awful.spawn.with_shell(cmd .. perc .. "%")
+ end
+end
+
+local function mute_toggle_for(sink) -- {{{1
+ local cmd = "pactl set-sink-mute " .. sink .. " toggle"
+ return function()
+ awful.spawn.with_shell(cmd)
+ end
+end
+
+-- widget constructor {{{1
+return function(user_settings)
+ for k,v in pairs(user_settings) do
+ settings[k] = v
+ end
+
+ local slider = wibox.widget(awful.util.table.join(
+ slider_defaults,
+ settings.slider,
+ slider_immutable))
+
+ local current_icon = nil
+ local current_volume = 0
+ local muted = false
+ local set_volume = setter_for(settings.sink)
+ local mute_toggle = mute_toggle_for(settings.sink)
+
+ local updater = function(update, _, iconbox, _)
+ local icon = "icon-pulseaudio-"
+ local volume = tonumber(update) or 0
+ if volume < 0 then
+ muted = true
+ volume = volume * -1
+ else
+ muted = false
+ end
+
+ if muted then
+ icon = icon .. "muted"
+ elseif volume == 0 then
+ icon = icon .. "0"
+ elseif volume < 33 then
+ icon = icon .. "min"
+ elseif volume < 66 then
+ icon = icon .. "med"
+ else
+ icon = icon .. "max"
+ end
+
+ if volume ~= current_volume then
+ slider.value = volume
+ current_volume = volume
+ end
+
+ if icon ~= current_icon then
+ iconbox:set_image(beautiful[icon] or beautiful["icon-pulseaudio-muted"])
+ current_icon = icon
+ end
+
+ end
+
+ return {
+ slider,
+ {
+ icon = beautiful["icon-pulseaudio-med"],
+ conky = "${exec pactl list sinks | " ..
+ util.awk("pulseaudio-sink", { sink = settings.sink }) .. "}",
+ conkybox = { visible = false },
+
+ signals = {
+ ['mouse::enter'] = function() slider.visible = true end,
+ ['mouse::leave'] = function() slider.visible = false end
+ },
+
+ buttons = {
+ { {}, 1, function(_, iconbox, _)
+ mute_toggle()
+ muted = not muted
+ updater("" .. slider.value, nil, iconbox)
+ end },
+ { {}, 4, function(_, iconbox, _)
+ local new = slider.value + settings.step
+ if new > slider.maximum then
+ slider.value = slider.maximum
+ else
+ slider.value = new
+ end
+ set_volume(slider.value)
+ updater("" .. slider.value, nil, iconbox)
+ end },
+ { {}, 5, function(_, iconbox, _)
+ local new = slider.value - settings.step
+ if new < slider.minimum then
+ slider.value = slider.minimum
+ else
+ slider.value = new
+ end
+ set_volume(slider.value)
+ updater("" .. slider.value, nil, iconbox)
+ end },
+ },
+ updater = updater,
+ }
+ }
+end