Switch to pipewire, add sink tooltip

audio.lua

@@ -1,10 +1,18 @@
+-- requires pulseaudio-ctl and lua53-dkjson installed
+
+local awful = require("awful")
 local vicious = require("vicious")
 local wibox = require("wibox")
+local naughty = require("naughty")
+local beautiful = require("beautiful")
+local json = require("dkjson") --require("knorke.json")
 
 local icon_mute
 local icon_low
 local icon_medium
 local icon_high
+local mute_state
+local vol_id
 
 
 -- Create layout with widgets
@@ -37,6 +45,23 @@ vicious.register(widget.text, vicious.widgets.volume,
         return " " .. args[1] .. "%"
     end, 1, "Master")
 
+local function change_volume(amount)
+    if (amount < 0) then
+        awful.util.spawn("amixer -qD pipewire sset Master " .. math.abs(amount) .. "%-")
+    else
+        awful.util.spawn("amixer -qD pipewire sset Master " .. math.abs(amount) .. "%+")
+    end
+    local f = io.popen("amixer -D pipewire get Master")
+    local vol = 0
+    for line in f:lines() do
+        for word in string.gmatch(line, "(%d%d?%d?)%%") do
+            vol = word
+        end
+    end
+    -- add changed amount as the current value is not yet changed when calling io.popen
+    return tonumber(vol) + amount
+end
+
 -- Widget function that is available from the outside.
 function widget.set_icons(mute, low, medium, high)
     icon_mute = mute
@@ -45,4 +70,88 @@ function widget.set_icons(mute, low, medium, high)
     icon_high = high
 end
 
+function widget.notify_mute()
+    -- evaluate old state as util.spawn is too slow and io.popen will be evaluated before
+    local old_state = io.popen("pulseaudio-ctl full-status")
+    for line in old_state:lines() do
+        for val in string.gmatch(line, "%d%d?%d?%s(%w%w%w?)") do
+            mute_state = val
+        end
+    end
+    local notify_icon = beautiful.icons.vol_mute
+    if mute_state == "yes" then
+        notify_icon = beautiful.icons.vol_high
+    end
+    awful.util.spawn("amixer -qD pipewire sset Master toggle")
+
+    vol_id = naughty.notify({
+            icon = notify_icon,
+            position = "top_middle",
+            border_width = 0,
+            icon_size = 128,
+            replaces_id = vol_id }).id
+end
+
+function widget.notify_volume(delta)
+    local volume = change_volume(delta)
+    if (volume > 50) then
+        notify_icon = beautiful.icons.vol_high
+    elseif (volume == 0) then
+        notify_icon = beautiful.icons.vol_mute
+    else
+        notify_icon = beautiful.icons.vol_low
+    end
+    local notify_icon_vol = naughty.notify({
+            position = "top_middle",
+            border_width = 0,
+            icon = notify_icon,
+            replaces_id = vol_id })
+    vol_id = notify_icon_vol.id
+    local notify_width = notify_icon_vol.width
+    local bar = wibox.widget.progressbar()
+    bar:set_value(volume)
+    bar:set_max_value(100)
+    bar:set_color(beautiful.archcolor)
+    bar:set_background_color(beautiful.archcolor_bg)
+    wibox.widget.draw_to_svg_file(bar, "/tmp/vol-bar.svg", 128, 10)
+    vol_id_1 = naughty.notify({
+            position = "top_middle",
+            border_width = 0,
+            icon = "/tmp/vol-bar.svg",
+            width = notify_width,
+            replaces_id = vol_id_1 }).id
+end
+
+-- Show audio sinks in tooltip
+awful.tooltip(
+    {
+        objects = { widget },
+        mode = "outside",
+        align = "right",
+        fg = "white",
+        margin_leftright = 10,
+        margin_topbottom = 10,
+        timeout = 5,
+        timer_function = function()
+            local handle = io.popen("pw-dump -N", "r")
+            local json_string = ""
+            local results = {}
+            for line in  handle:lines() do
+                json_string = json_string .. line
+            end
+            local json_obj, pos, err = json.decode(json_string)
+            if not err then
+                for i = 1, #json_obj do
+                    if json_obj[i].info and json_obj[i].info.props["media.class"] == "Audio/Sink" then
+                        table.insert(results, tostring(json_obj[i].info.props["node.description"]))
+                    end
+                end
+            end
+            handle:close()
+            return table.concat(results, "\n")
+        end,
+        preferred_positions = {"right", "left", "top", "bottom"}
+    }
+)
+
 return widget