initial commit

xss-lock/dim-screen.sh

@@ -0,0 +1,65 @@
+#!/bin/bash
+
+# Example notifier script -- lowers screen brightness, then waits to be killed
+# and restores previous brightness on exit.
+
+## CONFIGURATION ##############################################################
+
+# Brightness will be lowered to this value.
+min_brightness=0
+
+# If your video driver works with xbacklight, set -time and -steps for fading
+# to $min_brightness here. Setting steps to 1 disables fading.
+fade_time=200
+fade_steps=20
+
+# If you have a driver without RandR backlight property (e.g. radeon), set this
+# to use the sysfs interface and create a .conf file in /etc/tmpfiles.d/
+# containing the following line to make the sysfs file writable for group
+# "users":
+#
+#     m /sys/class/backlight/acpi_video0/brightness 0664 root users - -
+#
+#sysfs_path=/sys/class/backlight/acpi_video0/brightness
+
+# Time to sleep (in seconds) between increments when using sysfs. If unset or
+# empty, fading is disabled.
+fade_step_time=0.05
+
+###############################################################################
+
+get_brightness() {
+    if [[ -z $sysfs_path ]]; then
+        brightnessctl g
+    else
+        cat $sysfs_path
+    fi
+}
+
+set_brightness() {
+    if [[ -z $sysfs_path ]]; then
+        xbacklight -steps 1 -set $1
+    else
+        echo $1 > $sysfs_path
+    fi
+}
+
+fade_brightness() {
+    if [[ -z $sysfs_path ]]; then
+        xbacklight -time $fade_time -steps $fade_steps -set $1
+    elif [[ -z $fade_step_time ]]; then
+        set_brightness $1
+    else
+        local level
+        for level in $(eval echo {$(get_brightness)..$1}); do
+            set_brightness $level
+            sleep $fade_step_time
+        done
+    fi
+}
+
+trap 'exit 0' TERM INT
+trap "set_brightness $(get_brightness); kill %%" EXIT
+fade_brightness $min_brightness
+sleep 2147483647 &
+wait