lazy push before updates

widgets/volume.lua

@@ -0,0 +1,68 @@
+local awful = require("awful")
+local beautiful = require("beautiful")
+local wibox = require("wibox")
+
+local _M = {}
+
+function _M.update(stdout)
+	local vol_now = {
+		volume = "N/A",
+		muted = "N/A",
+		icon = "N/A",
+	}
+
+	vol_now.volume = stdout:gsub("%s+", "")
+	vol_now.volume = vol_now.volume:gsub("%%", "")
+	if vol_now.volume == "muted" then
+		vol_now.muted = true
+		vol_now.volume = -1
+	else
+        vol_now.volume = tonumber(vol_now.volume)
+		vol_now.muted = false
+	end
+
+	if vol_now.muted or vol_now.volume == 0 then
+		vol_now.icon = beautiful.volume_muted_icon
+	elseif vol_now.volume >= 66 then
+		vol_now.icon = beautiful.volume_high_icon
+	elseif vol_now.volume >= 33 then
+		vol_now.icon = beautiful.volume_medium_icon
+	else
+		vol_now.icon = beautiful.volume_low_icon
+	end
+
+	return vol_now
+end
+
+function _M.get()
+	local volume = awful.widget.watch(
+		{
+			awful.util.shell,
+			"-c",
+			"pamixer --get-volume-human",
+		},
+		1,
+		function(widget, stdout)
+			local vol_now = _M.update(stdout)
+
+			local icon = wibox.widget.imagebox(vol_now.icon)
+			local text = wibox.widget.textbox(vol_now.volume .. "% ")
+
+			widget.children = {
+				text,
+				icon,
+			}
+		end,
+		wibox.widget({
+			layout = wibox.layout.fixed.horizontal,
+		})
+	)
+
+	return volume
+end
+
+return setmetatable({}, {
+	__call = function(_, ...)
+		return _M.get(...)
+	end,
+})