uploading complete app file

completeApp_part2.py

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+from kivymd.uix.screen import MDScreen
+from kivymd.app import MDApp
+from kivy.uix.image import Image
+from kivymd.uix.button import MDFillRoundFlatIconButton, MDFillRoundFlatButton
+from kivymd.uix.textfield import MDTextField
+from kivymd.uix.label import MDLabel
+from kivymd.uix.toolbar import MDToolbar
+
+class ConverterApp(MDApp):
+    def flip(self):
+        # a method for the "flip" icon
+        # changes the state of the app
+        if self.state == 0:
+            self.state = 1
+            self.toolbar.title = "Decimal to Binary"
+            self.input.text = "enter a decimal number"
+        else:
+            self.state = 0
+            self.toolbar.title = "Binary to Decimal"
+            self.input.text = "enter a binary number"
+        # hide labels until needed
+        self.converted.text = ""
+        self.label.text = ""
+
+    def convert(self, args):
+        # a method to find the decimal/binary equivallent
+        try:
+            if "." not in self.input.text:
+                # if the user-provided number is not a fraction
+                if self.state == 0:
+                    # binary to decimal
+                    val = str(int(self.input.text,2))
+                    self.label.text = "in decimal is:"
+                else:
+                    # decimal to binary
+                    val = bin(int(self.input.text))[2:]
+                    self.label.text = "in binary is:"
+                self.converted.text = val
+            else:
+                #if the user provided number is a fraction
+                whole, fract = self.input.text.split(".")
+
+                if self.state == 0:
+                    #convert binary to decimal
+                    whole = int(whole, 2)
+                    floating = 0
+                    for idx, digit in enumerate(fract):
+                        floating += int(digit)*2**(-(idx+1))
+                    self.label.text = "in decimal is:"
+                    self.converted.text = str(whole + floating)
+                else:
+                    #convert decimal to binary
+                    decimal_places = 10
+                    whole = bin(int(whole))[2:]
+                    fract = float("0."+fract)
+                    floating = []
+                    for i in range(decimal_places):
+                        if fract*2 < 1:
+                            floating.append("0")
+                            fract *= 2
+                        elif fract*2 > 1:
+                            floating.append("1")
+                            fract = fract*2 - 1
+                        elif fract*2 == 1.0:
+                            floating.append("1")
+                            break
+                    self.label.text = "in binary is:"
+                    self.converted.text = whole + "." + "".join(floating)
+        except ValueError:
+            #if the user-provided value is invalid
+            self.converted.text = ""
+            if self.state == 0:
+                #binary to decimal
+                self.label.text = "please enter a valid binary number"
+            else:
+                #decimal to binary
+                self.label.text = "please enter a valid decimal number"
+
+    def build(self):
+        self.state = 0 #initial state
+        #self.theme_cls.primary_palette = "DeepOrange"
+        screen = MDScreen()
+
+        # top toolbar
+        self.toolbar = MDToolbar(title="Binary to Decimal")
+        self.toolbar.pos_hint = {"top": 1}
+        self.toolbar.right_action_items = [
+            ["rotate-3d-variant", lambda x: self.flip()]]
+        screen.add_widget(self.toolbar)
+
+        # logo
+        screen.add_widget(Image(
+            source="logo.png",
+            pos_hint = {"center_x": 0.5, "center_y":0.7}
+            ))
+
+        #collect user input
+        self.input = MDTextField(
+            text="enter a binary number",
+            halign="center",
+            size_hint = (0.8,1),
+            pos_hint = {"center_x": 0.5, "center_y":0.5},
+            font_size = 22
+        )
+        screen.add_widget(self.input)
+
+        #secondary + primary labels
+        self.label = MDLabel(
+            halign="center",
+            pos_hint = {"center_x": 0.5, "center_y":0.35},
+            theme_text_color = "Secondary"
+        )
+
+        self.converted = MDLabel(
+            halign="center",
+            pos_hint = {"center_x": 0.5, "center_y":0.3},
+            theme_text_color = "Primary",
+            font_style = "H5"
+        )
+        screen.add_widget(self.label)
+        screen.add_widget(self.converted)
+
+        # "CONVERT" button
+        screen.add_widget(MDFillRoundFlatButton(
+            text="CONVERT",
+            font_size = 17,
+            pos_hint = {"center_x": 0.5, "center_y":0.15},
+            on_press = self.convert
+        ))
+
+        return screen
+
+if __name__ == '__main__':
+    ConverterApp().run()