Enable pynput keylistener to work as service

install_as_service.sh

@@ -1,6 +1,15 @@
 #!/bin/bash
-args="$*"
 chmod +x run.sh
+# If first arg is of form :n it will set DISPLAY to :n. Default is :0
+dsp_prefix=:
+dsp=:0
+# if [[ -n "${1+x}" ]]; then
+    if [[ $1 == $dsp_prefix* ]]; then
+        dsp="$1"
+        shift
+    fi
+# fi
+args="$*"
 rm -f fwledmonitor.service || true
 sed -i "s#led_system_monitor.py.*\$#led_system_monitor.py ${args}#" run.sh
 cat <<EOF >>./fwledmonitor.service
@@ -9,6 +18,7 @@ Description=Framework 16 LED System Monitor
 After=network.service
 
 [Service]
+Environment=DISPLAY=${dsp}
 Type=simple
 Restart=always
 WorkingDirectory=$PWD

led_system_monitor.py

@@ -15,7 +15,7 @@ from monitors import CPUMonitor, MemoryMonitor, BatteryMonitor, DiskMonitor, Net
 
 # External Dependencies
 import numpy as np
-import evdev
+from pynput.keyboard import Key, Listener
 from serial.tools import list_ports
 
 
@@ -35,8 +35,6 @@ def discover_led_devices():
     except Exception as e:
         print(f"An Exception occured while tring to locate LED Matrix devices. {e}")
                 
-device = evdev.InputDevice('/dev/input/event7')
-        
 def main(args):    
     led_devices = discover_led_devices()
     if not len(led_devices):
@@ -113,6 +111,27 @@ def main(args):
         "none": lambda *x: x # noop
     }
     
+    def on_press(key):
+        global alt_pressed
+        global i_pressed
+        if type(key).__name__ == 'KeyCode':
+            if key.char == 'i':
+                i_pressed = True
+        elif key == Key.alt:
+            alt_pressed = True
+
+    def on_release(key):
+        global alt_pressed
+        global i_pressed
+        if type(key).__name__ == 'KeyCode':
+            if key.char == 'i':
+                i_pressed = False
+        elif key == Key.alt:
+            alt_pressed = False
+        if key == Key.esc:
+            # Stop listener
+            return False
+        
     #################################################
         ###      Load app functions from plugins      ###
     if not re.search(r"--disable-plugins|-dp", str(sys.argv)):
@@ -133,7 +152,9 @@ def main(args):
     if args.snapshot_duration > args.snapshot_interval:
         print("Snapshot duration must be less than snapshot interval. Exiting...")
         sys.exit(0)
-    start_time = time.time()
+    with Listener(
+        on_press=on_press,
+        on_release=on_release):
         while True:
             elapsed_time = time.time()
             show_snapshot = True if args.snapshot_interval == 0 or elapsed_time % args.snapshot_interval <= args.snapshot_duration else False
@@ -142,8 +163,7 @@ def main(args):
                 background_value = int(screen_brightness * (max_background_brightness - min_background_brightness) + min_background_brightness)
                 foreground_value = int(screen_brightness * (max_foreground_brightness - min_foreground_brightness) + min_foreground_brightness)
                 grid = np.zeros((9,34), dtype = int)
-            active_keys = device.active_keys(verbose=True)
-            if (MODIFIER_KEYS[0] in active_keys or MODIFIER_KEYS[1] in active_keys) and KEY_I in active_keys and not args.no_key_listener:
+                if i_pressed and alt_pressed and not args.no_key_listener:
                     if args.left_snap and show_snapshot:
                         draw_id(grid, "snap", foreground_value)
                     else:

run.sh

@@ -1,3 +1,3 @@
 sudo apt install -y python3-numpy python3-psutil python3-serial python3-evdev
-
+xhost +local:root
 python3 ./led_system_monitor.py

snapshot_files/right/check.json

@@ -0,0 +1 @@
+[[0,1,0,1,0,1,0,1,0],[1,0,1,0,1,0,1,0,1],[0,1,0,1,0,1,0,1,0],[1,0,1,0,1,0,1,0,1],[0,1,0,1,0,1,0,1,0],[1,0,1,0,1,0,1,0,1],[0,1,0,1,0,1,0,1,0],[1,0,1,0,1,0,1,0,1],[0,1,0,1,0,1,0,1,0],[1,0,1,0,1,0,1,0,1],[0,1,0,1,0,1,0,1,0],[1,0,1,0,1,0,1,0,1],[0,1,0,1,0,1,0,1,0],[1,0,1,0,1,0,1,0,1],[0,1,0,1,0,1,0,1,0],[1,0,1,0,1,0,1,0,1],[0,1,0,1,0,1,0,1,0],[1,0,1,0,1,0,1,0,1],[0,1,0,1,0,1,0,1,0],[1,0,1,0,1,0,1,0,1],[0,1,0,1,0,1,0,1,0],[1,0,1,0,1,0,1,0,1],[0,1,0,1,0,1,0,1,0],[1,0,1,0,1,0,1,0,1],[0,1,0,1,0,1,0,1,0],[1,0,1,0,1,0,1,0,1],[0,1,0,1,0,1,0,1,0],[1,0,1,0,1,0,1,0,1],[0,1,0,1,0,1,0,1,0],[1,0,1,0,1,0,1,0,1],[0,1,0,1,0,1,0,1,0],[1,0,1,0,1,0,1,0,1],[0,1,0,1,0,1,0,1,0],[1,0,1,0,1,0,1,0,1]]

snapshot_files/right/every-third-row.json

@@ -1 +0,0 @@
-[[1,1,1,1,1,1,1,1,1],[0,0,0,0,0,0,0,0,0],[0,0,0,0,0,0,0,0,0],[1,1,1,1,1,1,1,1,1],[0,0,0,0,0,0,0,0,0],[0,0,0,0,0,0,0,0,0],[1,1,1,1,1,1,1,1,1],[0,0,0,0,0,0,0,0,0],[0,0,0,0,0,0,0,0,0],[1,1,1,1,1,1,1,1,1],[0,0,0,0,0,0,0,0,0],[0,0,0,0,0,0,0,0,0],[1,1,1,1,1,1,1,1,1],[0,0,0,0,0,0,0,0,0],[0,0,0,0,0,0,0,0,0],[1,1,1,1,1,1,1,1,1],[0,0,0,0,0,0,0,0,0],[0,0,0,0,0,0,0,0,0],[1,1,1,1,1,1,1,1,1],[0,0,0,0,0,0,0,0,0],[0,0,0,0,0,0,0,0,0],[1,1,1,1,1,1,1,1,1],[0,0,0,0,0,0,0,0,0],[0,0,0,0,0,0,0,0,0],[1,1,1,1,1,1,1,1,1],[0,0,0,0,0,0,0,0,0],[0,0,0,0,0,0,0,0,0],[1,1,1,1,1,1,1,1,1],[0,0,0,0,0,0,0,0,0],[0,0,0,0,0,0,0,0,0],[1,1,1,1,1,1,1,1,1],[0,0,0,0,0,0,0,0,0],[0,0,0,0,0,0,0,0,0],[1,1,1,1,1,1,1,1,1]]