add circleview

frontend/app.py

@@ -7,12 +7,13 @@ from statistics import mean
 
 from .serial_reader import SerialReader
 from .config import DEFAULT_CALIB, DISPLAY_TYPES
-from .views import NumberView
+from .views import *
 
 class WeightApp(tk.Tk):
     def __init__(self, weight_reader: SerialReader):
         super().__init__()
         self.weight_reader = weight_reader
+        self.view = None
         
         self.toolbar = tk.Frame(self, padx=10)
         self.toolbar.pack(side=tk.LEFT)
@@ -51,9 +52,11 @@ class WeightApp(tk.Tk):
         self.view_type.pack()
         self.view_type_label = ttk.Label(self.view_type, text="Visual:")
         self.view_type_label.pack(side=tk.LEFT)
-        self.view_type_select = ttk.Combobox(self.view_type, values=[t.value for t in DISPLAY_TYPES], postcommand=self.update_view)
+        self.view_type_select = ttk.Combobox(self.view_type, values=[t.value for t in DISPLAY_TYPES])
         self.view_type_select.set(DISPLAY_TYPES.NUMBER.value)
         self.view_type_select.pack(side=tk.LEFT)
+        self.view_type_update = ttk.Button(self.view_type, text="Refresh", command=self.update_view)
+        self.view_type_update.pack()
 
         #### Display ####
         self.update_view()
@@ -109,12 +112,23 @@ class WeightApp(tk.Tk):
     
     def update_view(self):
         selected_view = self.view_type_select.get()
+        
+        if self.view is not None:
+            self.view.pack_forget()
+
+        
         if selected_view == DISPLAY_TYPES.NUMBER.value:
             self.view = NumberView(self,
                                 tare_command=self.weight_reader.tare,
                                 calibrate_command=self.calibrate,
                                 padx=50)
             self.view.pack(side=tk.RIGHT)
+        elif selected_view == DISPLAY_TYPES.CIRCLE.value:
+            self.view = CircleView(self,
+                                   tare_command=self.weight_reader.tare,
+                                   calibrate_command=self.calibrate,
+                                   padx=50)
+            self.view.pack(side=tk.RIGHT)
         else:
             raise Exception(f"View {selected_view} not found.")