Dim screen on inactivity, then lock it

.config/hypr/hyprland.conf

@@ -32,6 +32,15 @@ monitor=HDMI-A-1,preferred,0x0,1.3
 exec-once = dunst
 exec-once = /usr/libexec/kf5/polkit-kde-authentication-agent-1
 
+# Dim screen after 60 seconds of inactivity
+exec-once = swayidle -w timeout 60 'dim-screen &' resume 'undim-screen' 
+# Lock screen after idle for 300s
+exec-once = swayidle -w timeout 300 'lock-screen'
+# Dim screen 5 seconds after screen is locked. no -w option here.
+exec-once = swayidle timeout 5 'if pgrep -x swaylock; then dim-screen; fi' resume 'undim-screen' 
+# Turn monitors off 20 seconds after screen is locked
+exec-once = swayidle -w timeout 20 'if pgrep -x swaylock; then hyprctl dispatch dpms off; fi' resume 'hyprctl dispatch dpms on' 
+
 # exec-once = /usr/libexec/polkit-gnome-authentication-agent-1
 
 # Source a file (multi-file configs)
@@ -219,14 +228,17 @@ bindm = $mainMod, mouse:273, resizewindow
 
 
 # screen
-bindle=,XF86MonBrightnessUp,   exec, light -A 5
+bindle=,XF86MonBrightnessUp,   exec, light -A 3; light -O
-bindle=,XF86MonBrightnessDown, exec, light -U 5
+bindle=,XF86MonBrightnessDown, exec, light -U 3; light -O
 # bindle=,XF86KbdBrightnessUp,   exec, ags -r 'brightness.kbd++; indicator.kbd()'
 # bindle=,XF86KbdBrightnessDown, exec, ags -r 'brightness.kbd--; indicator.kbd()'
 #
+#
 bindle=,XF86AudioRaiseVolume,  exec, volume up
 bindle=,XF86AudioLowerVolume,  exec, volume down
 bindle=,XF86AudioMute,  exec, volume toggle-mute
+bind = $mainMod SHIFT, q, exec, lock-screen
+# bindl = $mainMod SHIFT, L, exec, sleep 1 && hyprctl dispatch dpms off
 
 
 windowrulev2 = stayfocused,class:(wofi)

scripts/dim-screen

@@ -0,0 +1,30 @@
+#!/usr/bin/python3
+
+# Gradually decrease brightness level. Thanks ChatGPT
+import subprocess
+import time
+
+def set_brightness(brightness):
+    subprocess.call(['light', '-S', str(brightness)])
+
+def smooth_dimming(initial_brightness, final_brightness, duration, steps):
+    brightness_step = (initial_brightness - final_brightness) / steps
+    sleep_time = duration / steps
+
+    for i in range(steps + 1):
+        current_brightness = round(initial_brightness - i * brightness_step,2)
+        set_brightness(current_brightness)
+        print(current_brightness)
+        time.sleep(sleep_time)
+
+    set_brightness(final_brightness)
+
+# Save brighness value for later
+subprocess.call(['light', '-O'])
+
+initial_brightness = float(subprocess.getoutput('light'))
+final_brightness = 0 if initial_brightness < 20 else 5
+dimming_duration = 0.3 if initial_brightness < 20 else .5
+num_steps = 20 if initial_brightness < 20 else 50
+
+smooth_dimming(initial_brightness, final_brightness, dimming_duration, num_steps)

scripts/lock-screen

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+swaylock -f

scripts/undim-screen

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+if pid=$(pgrep -x "dim-screen"); then
+  kill $pid
+fi
+
+light -I