Meal Ordering App update

main.py

 from kivy.app import App
 from kivy.modules import inspector # For inspection.
 from kivy.core.window import Window # For inspection.
+from kivy.uix.checkbox import CheckBox
+from kivy.properties import NumericProperty
 
 __app_package__ = 'edu.unl.cse.soft161.order'
 __app__ = 'Order Meal'
 __version__ = '0.1'
 __flags__ = ['--bootstrap=sdl2', '--requirements=python2,kivy', '--orientation=landscape']
 
-
 class OrderApp(App):
+    checkbox = CheckBox()
+    price = NumericProperty(0.0)
+
     def build(self):
         inspector.create_inspector(Window, self) # For inspection (press control-e to toggle).
 
+    def add_price(self):
+        print("Hello")
+
+    def bubble_tea_price(self,value):
+        if value:
+            self.price+=3.75
+        else:
+            self.price-=3.75
+
+    def thai_tea_price(self,value):
+        if value:
+            self.price+=2.75
+        else:
+            self.price-=2.75
+
+    def coffee_price(self,value):
+        if value:
+            self.price+=2.25
+        else:
+            self.price-=2.25
+
+    def pho_price(self,value):
+        if value:
+            self.price+=9.25
+        else:
+            self.price-=9.25
+
+    def stir_fry_price(self,value):
+        if value:
+            self.price+=10.00
+        else:
+            self.price-=10.00
+
+    def fried_rice_price(self,value):
+        if value:
+            self.price+=8.25
+        else:
+            self.price-=8.25
 
 if __name__ == '__main__':
     app = OrderApp()

order.kv

 BoxLayout:
     orientation: 'vertical'
+    canvas.before:
+        Color:
+            rgba: (1, 1, 1, 0)
+        Rectangle:
+            pos: self.pos
+            size: self.size
     Label:
-        text: '[Your meal-ordering GUI here]'
+        text: 'Pho Nguyen'
+        font_size: '100sp'
+
+    BoxLayout:
+        orientation: 'horizontal'
+        BoxLayout:
+            orientation: 'vertical'
+            Label:
+                text: 'Drinks'
+                font_size: '30sp'
+            BoxLayout:
+                orientation: 'horizontal'
+                CheckBox:
+                    id: 'check_tea'
+                    on_active: app.thai_tea_price(self.active)
+                Label:
+                    id:'thai_tea'
+                    text_size: self.size
+                    halign: 'left'
+                    valign: 'middle'
+                    font_size: '24sp'
+                    text: 'Thai Tea'
+            BoxLayout:
+                orientation: 'horizontal'
+                CheckBox:
+                    id: 'bubble_tea_check'
+                    on_active: app.bubble_tea_price(self.active)
+                Label:
+                    id:'bubble_tea'
+                    text_size: self.size
+                    halign: 'left'
+                    valign: 'middle'
+                    font_size: '24sp'
+                    text: 'Bubble Tea'
+            BoxLayout:
+                orientation: 'horizontal'
+                CheckBox:
+                    id: 'check_coffee'
+                    on_active: app.coffee_price(self.active)
+                Label:
+                    id:'coffee'
+                    text_size: self.size
+                    halign: 'left'
+                    valign: 'middle'
+                    font_size: '24sp'
+                    text: 'Vietnamese Coffee'
+        BoxLayout:
+            orientation: 'vertical'
+            Label:
+                text: "Main Dish"
+                font_size: '30sp'
+            BoxLayout:
+                orientation: 'horizontal'
+                CheckBox:
+                    id: 'check_pho'
+                    on_active: app.pho_price(self.active)
+                Label:
+                    id:'pho'
+                    text_size: self.size
+                    halign: 'left'
+                    valign: 'middle'
+                    font_size: '24sp'
+                    text: 'Pho Noodles'
+            BoxLayout:
+                orientation: 'horizontal'
+                CheckBox:
+                    id: 'stir_fry_check'
+                    on_active: app.stir_fry_price(self.active)
+                Label:
+                    id:'stir_fry'
+                    text_size: self.size
+                    halign: 'left'
+                    valign: 'middle'
+                    font_size: '24sp'
+                    text: 'Stir-Fry Pho Noodles'
+            BoxLayout:
+                orientation: 'horizontal'
+                CheckBox:
+                    id: 'fried_rice_check'
+                    on_active: app.fried_rice_price(self.active)
+                Label:
+                    id:'fried_rice'
+                    text_size: self.size
+                    halign: 'left'
+                    valign: 'middle'
+                    font_size: '24sp'
+                    text: 'Fried Rice'
+    BoxLayout:
+        orientation: 'horizontal'
+        BoxLayout:
+            Label:
+                text: 'Price:'
+                font_size: '30sp'
+                halign: 'right'
+                valign: 'middle'
+        BoxLayout:
+            Label:
+                text: str(app.price)
+                font_size: '30sp'
+
+                halign: 'left'
+                valign: 'middle'
+