initial commit

xss-lock/dim-screen3.sh

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+#!/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 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() {
+    brightnessctl get  # Get current brightness level
+}
+
+set_brightness() {
+    brightnessctl set $1  # Set brightness to the specified percentage
+}
+
+fade_brightness() {
+    local current_brightness=$(get_brightness)
+    local target_brightness=$1
+
+    if [[ $current_brightness -eq $target_brightness ]]; then
+        return  # No need to change brightness
+    fi
+
+    local step
+    local fade_steps=$(( (current_brightness - target_brightness) / 1000 ))
+    local increment=1000
+
+    for (( step=0; step<fade_steps; step++ )); do
+        if [[ ! -e /tmp/asleepin ]]; then
+          exit 0
+        fi
+        local new_brightness=$(( current_brightness - increment * (step + 1) ))
+        set_brightness $new_brightness
+        sleep $fade_step_time
+    done
+
+    set_brightness $target_brightness  # Ensure we set to the exact target
+}
+
+trap 'exit 0' TERM INT
+trap "set_brightness $(get_brightness); kill %%" EXIT
+fade_brightness $min_brightness
+sleep 2147483647 &
+wait
+