[Update] Switch to FreeSimpleGUI, update deps

BridgeApp/app_gui.py

@@ -1,4 +1,4 @@
-import PySimpleGUI as sg
+import FreeSimpleGUI as sg
 import webbrowser
 
 from app_config import AppConfig, PatternConfig
@@ -39,6 +39,7 @@ def __init__(self, app_config: AppConfig, tracker_test_event, restart_osc_event,
         self.restart_osc_event = restart_osc_event
         self.refresh_trackers_event = refresh_trackers_event
         self.config = app_config
+        self.shutting_down = False
         self.window = None
         self.trackers = []
         self.osc_status_bar = sg.Text('', key=KEY_OSC_STATUS_BAR)
@@ -165,10 +166,11 @@ def update_osc_status_bar(self, message, is_error=False):
             self.osc_status_bar.DisplayText = message
             self.osc_status_bar.TextColor = text_color
             return
-        try:
-            self.osc_status_bar.update(message, text_color=text_color)
-        except Exception as e:
-            print("[GUI] Failed to update server status bar.")
+        if not self.shutting_down:
+            try:
+                self.osc_status_bar.update(message, text_color=text_color)
+            except Exception as e:
+                print("[GUI] Failed to update server status bar.")
 
     def run(self):
         if self.window is None:
@@ -181,6 +183,7 @@ def run(self):
 
         # React to Event
         if event == sg.WIN_CLOSED or event == 'Exit':  # if user closes window or clicks cancel
+            self.shutting_down = True
             print("[GUI] Closing application.")
             return False
         if event[0] == KEY_BTN_TEST:

BridgeApp/requirements.txt

@@ -1,6 +1,6 @@
-pysimplegui==4.60.5
-openvr==1.26.701
-pydantic==2.5.3
-pyserial==3.5
-python-osc==1.8.3
-websockets==12.0
+freesimplegui~=5.1.0
+openvr~=1.26.701
+pydantic~=2.8.0
+pyserial~=3.5
+python-osc~=1.8.3
+websockets~=12.0