Better widgets

awesome-wm-widgets/volumearc-widget/README.md

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+# Volumearc widget
+
+Almost the same as [volumebar widget](https://github.com/streetturtle/awesome-wm-widgets/tree/master/volumebar-widget), but using arcchart:
+
+![screenshot](out.gif)
+
+Supports:
+ - scroll up - increase volume,
+ - scroll down - decrease volume,
+ - left click - mute/unmute.
+
+## Installation
+
+Clone repo, include widget and use it in **rc.lua**:
+
+```lua
+require("volumearc")
+...
+s.mytasklist, -- Middle widget
+	{ -- Right widgets
+    	layout = wibox.layout.fixed.horizontal,
+		...
+		volumearc_widget,
+		...
+```

awesome-wm-widgets/volumearc-widget/volumearc.lua

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+-------------------------------------------------
+-- Volume Arc Widget for Awesome Window Manager
+-- Shows the current volume level
+-- More details could be found here:
+-- https://github.com/streetturtle/awesome-wm-widgets/tree/master/volumearc-widget
+
+-- @author Pavel Makhov
+-- @copyright 2018 Pavel Makhov
+-------------------------------------------------
+
+local awful = require("awful")
+local beautiful = require("beautiful")
+local spawn = require("awful.spawn")
+local watch = require("awful.widget.watch")
+local wibox = require("wibox")
+
+local GET_VOLUME_CMD = 'amixer -D pulse sget Master'
+local INC_VOLUME_CMD = 'amixer -D pulse sset Master 5%+'
+local DEC_VOLUME_CMD = 'amixer -D pulse sset Master 5%-'
+local TOG_VOLUME_CMD = 'amixer -D pulse sset Master toggle'
+
+local volumearc = wibox.widget {
+    max_value = 1,
+    thickness = 2,
+    start_angle = 4.71238898, -- 2pi*3/4
+    forced_height = 17,
+    forced_width = 17,
+    bg = "#ffffff11",
+    paddings = 2,
+    widget = wibox.container.arcchart
+}
+
+local volumearc_widget = wibox.container.mirror(volumearc, { horizontal = true })
+
+local update_graphic = function(widget, stdout, _, _, _)
+    local mute = string.match(stdout, "%[(o%D%D?)%]")
+    local volume = string.match(stdout, "(%d?%d?%d)%%")
+    volume = tonumber(string.format("% 3d", volume))
+
+    widget.value = volume / 100;
+    widget.colors = mute == 'off' and { beautiful.widget_red }
+                                   or { beautiful.widget_main_color }
+
+end
+
+volumearc:connect_signal("button::press", function(_, _, _, button)
+    if (button == 4) then awful.spawn(INC_VOLUME_CMD, false)
+    elseif (button == 5) then awful.spawn(DEC_VOLUME_CMD, false)
+    elseif (button == 1) then awful.spawn(TOG_VOLUME_CMD, false)
+    end
+
+    spawn.easy_async(GET_VOLUME_CMD, function(stdout, stderr, exitreason, exitcode)
+        update_graphic(volumearc, stdout, stderr, exitreason, exitcode)
+    end)
+end)
+
+watch(GET_VOLUME_CMD, 1, update_graphic, volumearc)
+
+return volumearc_widget