Add dwm_backlight

Add dwm_backlight that displays the value of
xbacklight rounded to the nearest int.

README.md

@@ -18,6 +18,7 @@ A modular statusbar for DWM
   - [dwm_vpn](#dwm_vpn)
   - [dwm_ccurse](#dwm_ccurse)
   - [dwm_transmission](#dwm_transmission)
+  - [dwm_backlight](#dwm_backlight)
 - [Installation](#installation)
 - [Usage](#usage)
 - [Customizing](#customizing)
@@ -107,6 +108,12 @@ Displays the current status of a torrent with transmission-remote
 [⏬ archlinux-2019.06.01... | 92% 1min ⬆3.4 ⬇1.5]
 ```
 Dependencies: ```transmission-remote```
+### dwm_backlight
+Displays the current backlight level with xbacklight
+```
+[☀ 80]
+```
+Dependencies: ```xbacklight```
 ## Installation
 1. Clone and enter the repository:
 ```

bar-functions/dwm_backlight.sh

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+# A dwm_bar module to display the current backlight brighness with xbacklight
+# Joe Standring <git@joestandring.com>
+# GNU GPLv3
+
+# Dependencies: xbacklight
+
+dwm_backlight () {
+    printf "☀ %.0f\n" "$(xbacklight)"
+}
+
+dwm_backlight

dwm_bar.sh

@@ -24,6 +24,7 @@ export IDENTIFIER="unicode"
 . "$DIR/bar-functions/dwm_resources.sh"
 . "$DIR/bar-functions/dwm_battery.sh"
 . "$DIR/bar-functions/dwm_mail.sh"
+. "$DIR/bar-functions/dwm_backlight.sh"
 . "$DIR/bar-functions/dwm_alsa.sh"
 . "$DIR/bar-functions/dwm_pulse.sh"
 . "$DIR/bar-functions/dwm_weather.sh"
@@ -36,6 +37,6 @@ export IDENTIFIER="unicode"
 # Update dwm status bar every second
 while true
 do
-    xsetroot -name "[$(dwm_countdown)][$(dwm_transmission)][$(dwm_cmus)][$(dwm_resources)][$(dwm_battery)][$(dwm_mail)][$(dwm_alsa)][$(dwm_weather)][$(dwm_vpn)][$(dwm_network)][$(dwm_keyboard)][$(dwm_date)]"
+    xsetroot -name "[$(dwm_countdown)][$(dwm_transmission)][$(dwm_cmus)][$(dwm_resources)][$(dwm_battery)][$(dwm_mail)][$(dwm_backlight)][$(dwm_alsa)][$(dwm_weather)][$(dwm_vpn)][$(dwm_network)][$(dwm_keyboard)][$(dwm_date)]"
     sleep 1
 done