modified timer so it counts to -10s

SW/PC/Stopwatch/main.py

@@ -6,7 +6,7 @@ gi.require_version('Gtk', '4.0')
 from gi.repository import Gtk, Gio, Gdk
 
 index = 2
-TIME = 10*60
+TIME = 10
 
 class GridRow():
     def __init__(self, parent, runner, index):
@@ -41,9 +41,13 @@ class GridRow():
         
     def updateTime(self):
         t = TIME
-        while t: 
-            mins, secs = divmod(t, 60) 
-            timer = '{:02d}:{:02d}'.format(mins, secs)
+        while t >= -10:
+            if t < 0:
+                mins, secs = divmod((t * -1), 60)
+                timer = '-{:02d}:{:02d}'.format(mins, secs)
+            else:
+                mins, secs = divmod(t, 60)
+                timer = '{:02d}:{:02d}'.format(mins, secs)
             self.runb.set_label(timer)
             time.sleep(1) 
             t -= 1