Initial commit.

main.py

+from kivy.app import App
+from kivy.modules import inspector
+from kivy.core.window import Window
+from kivy.properties import BooleanProperty
+
+__app_package__ = 'edu.unl.cse.soft161.order'
+__app__ = 'Order Meal'
+__version__ = '0.1'
+__flags__ = ['--bootstrap=sdl2', '--requirements=python2,kivy', '--orientation=landscape']
+
+
+class OrderApp(App):
+    extra_charge = BooleanProperty(False)
+
+    def build(self):
+        inspector.create_inspector(Window, self)
+
+    def update_charge(self):
+        self.extra_charge = self.root.ids.sauce_slider.value > 50 or \
+                            self.root.ids.cheese_slider.value > 50 or \
+                            self.root.ids.toppings_slider.value > 50
+
+if __name__ == '__main__':
+    app = OrderApp()
+    app.run()

order.kv

+BoxLayout:
+    canvas.before:
+        Color:
+            rgba: (0.25, 0, 0, 1)
+        Rectangle:
+            pos: self.pos
+            size: self.size
+    orientation: 'vertical'
+    Label:
+        text: 'Personal Pizza'
+        font_size: '48sp'
+        color: (0.8, 0, 0, 1)
+    BoxLayout:
+        orientation: 'horizontal'
+        Label:
+            text: 'Sauce'
+            size_hint: 1, None
+            size: self.texture_size
+        Label:
+            id: sauce_label
+            size_hint: 1, None
+            size: self.texture_size
+            text: str(int(sauce_slider.value)) + '%'
+    BoxLayout:
+        orientation: 'horizontal'
+        Widget:
+            size_hint: 0.05, 1
+        Label:
+            text: 'Less'
+            size_hint: None, 1
+            size: self.texture_size
+        Slider:
+            id: sauce_slider
+            range: (0, 100)
+            value: 45
+            on_value: app.update_charge()
+        Label:
+            text: 'More'
+            size_hint: None, 1
+            size: self.texture_size
+        Widget:
+            size_hint: 0.05, 1
+    BoxLayout:
+        orientation: 'horizontal'
+        Label:
+            text: 'Cheese'
+            size_hint: 1, None
+            size: self.texture_size
+        Label:
+            id: cheese_label
+            size_hint: 1, None
+            size: self.texture_size
+            text: str(int(cheese_slider.value)) + '%'
+    BoxLayout:
+        orientation: 'horizontal'
+        Widget:
+            size_hint: 0.05, 1
+        Label:
+            text: 'Less'
+            size_hint: None, 1
+            size: self.texture_size
+        Slider:
+            id: cheese_slider
+            range: (0, 100)
+            value: 30
+            on_value: app.update_charge()
+        Label:
+            text: 'More'
+            size_hint: None, 1
+            size: self.texture_size
+        Widget:
+            size_hint: 0.05, 1
+    BoxLayout:
+        orientation: 'horizontal'
+        Label:
+            text: 'Toppings'
+            size_hint: 1, None
+            size: self.texture_size
+        Label:
+            id: toppings_label
+            size_hint: 1, None
+            size: self.texture_size
+            text: str(int(toppings_slider.value)) + '%'
+    BoxLayout:
+        orientation: 'horizontal'
+        Widget:
+            size_hint: 0.05, 1
+        Label:
+            text: 'Fewer'
+            size_hint: None, 1
+            size: self.texture_size
+        Slider:
+            id: toppings_slider
+            range: (0, 100)
+            value: 20
+            on_value: app.update_charge()
+        Label:
+            text: 'More'
+            size_hint: None, 1
+            size: self.texture_size
+        Widget:
+            size_hint: 0.05, 1
+    BoxLayout:
+        orientation: 'horizontal'
+        Label:
+            text: 'Extra Charge'
+            font_size: '24sp'
+            color: (0.8, 0, 0, 1)
+        Label:
+            font_size: '24sp'
+            text: '$0.50' if app.extra_charge else '$0.00'