make keyboard buttons transparent when they are disabled

screens/custom_widgets/colored_rounded_button.py

@@ -23,7 +23,6 @@
 )
 from tools.constants import (
     MAIN_BUTTON_FONT_SIZE,
-    OPACITY_ON_BUTTON_PRESS
 )
 
 #############
@@ -66,15 +65,6 @@ def __init__(
         self.text_filling_ratio = text_filling_ratio
         self.font_size = font_size
 
-        self.bind(disable_button=self.bind_function)
-        self.bind(color_label=self.bind_function)
-        self.bind(background_color=self.bind_function)
-        self.bind(touch_color=self.bind_function)
-        self.bind(outline_color=self.bind_function)
-
-    def bind_function(self, base_widget, value):
-        pass
-
     def on_press(self):
         if not self.disable_button:
             self.temp_color = self.background_color

screens/custom_widgets/keyboard_layout.py

@@ -48,7 +48,7 @@ class KeyboardLayout(RelativeLayout):
 
     font_size = NumericProperty()
     font_ratio = NumericProperty(1)
-    horizontal_padding = NumericProperty(0.2/9)
+    horizontal_padding = NumericProperty(0.2 / 9)
     size_letter = NumericProperty(0.08)
     text_font_name = StringProperty()
     background_color = ColorProperty([1, 1, 1, 1])
@@ -68,11 +68,14 @@ def __init__(
         if font_ratio is not None:
             self.font_ratio = font_ratio
 
-        self.bind(background_color=self.bind_function)
-        self.bind(touch_color=self.bind_function)
-        self.bind(type_keyboard=self.bind_function)
-        self.bind(horizontal_padding=self.bind_function)
-        self.bind(touch_function=self.bind_function)
+        # self.bind(background_color=self.bind_function)
+        # self.bind(touch_color=self.bind_function)
+        # self.bind(type_keyboard=self.bind_function)
+        # self.bind(horizontal_padding=self.bind_function)
+        # self.bind(touch_function=self.bind_function)
+
+        self.disable_color = [self.background_color[0],
+                              self.background_color[1], self.background_color[2], 0.5]
 
         super().__init__(**kwargs)
         self.text_font_name = text_font_name
@@ -82,40 +85,44 @@ def bind_function(self, base_widget, value):
         pass
 
     def update_padding(self, base_widget, value):
-        self.size_letter = (1 - self.horizontal_padding*9)/10 # because maximum of 9 letters in line
+        # because maximum of 9 letters in line
+        self.size_letter = (1 - self.horizontal_padding * 9) / 10
 
     def build_keyboard(self):
         """
         Add the different letters and the delete button in the keyboard layout.
-        
+
         Parameters
         ----------
         None
-        
+
         Returns
         -------
         Nonee
         """
         self.list_letter_keys = []
 
         vertical_padding = 0.05
-        height_letter = (1-vertical_padding*3) / 3
+        height_letter = (1 - vertical_padding * 3) / 3
 
         # Define the type of the keyboard
         if self.type_keyboard == "QWERTY":
-            first_line_letters = ["Q", "W", "E", "R", "T", "Y", "U", "I", "O", "P"]
+            first_line_letters = ["Q", "W", "E",
+                                  "R", "T", "Y", "U", "I", "O", "P"]
             second_line_letters = ["A", "S", "D", "F", "G", "H", "J", "K", "L"]
             third_line_letters = ["Z", "X", "C", "V", "B", "N", "M"]
             first_margin = 0
-            second_margin = (self.size_letter+self.horizontal_padding)/2
-            third_margin = (self.size_letter+self.horizontal_padding)/2
+            second_margin = (self.size_letter + self.horizontal_padding) / 2
+            third_margin = (self.size_letter + self.horizontal_padding) / 2
         elif self.type_keyboard == "AZERTY":
-            first_line_letters = ["A", "Z", "E", "R", "T", "Y", "U", "I", "O", "P"]
-            second_line_letters = ["Q", "S", "D", "F", "G", "H", "J", "K", "L", "M"]
+            first_line_letters = ["A", "Z", "E",
+                                  "R", "T", "Y", "U", "I", "O", "P"]
+            second_line_letters = ["Q", "S", "D",
+                                   "F", "G", "H", "J", "K", "L", "M"]
             third_line_letters = ["W", "X", "C", "V", "B", "N"]
             first_margin = 0
             second_margin = 0
-            third_margin = self.size_letter+self.horizontal_padding
+            third_margin = self.size_letter + self.horizontal_padding
 
         # First line
         counter = 0
@@ -125,13 +132,13 @@ def build_keyboard(self):
                 background_color=self.background_color,
                 touch_color=self.touch_color,
                 pos_hint={
-                    "x": first_margin+counter*(self.horizontal_padding+self.size_letter),
-                    "y": 2*vertical_padding + 2*height_letter},
+                    "x": first_margin + counter * (self.horizontal_padding + self.size_letter),
+                    "y": 2 * vertical_padding + 2 * height_letter},
                 font_size=LETTER_FONT_SIZE,
                 font_ratio=self.font_ratio,
                 size_hint=(self.size_letter, height_letter),
-                color_label=(1,1,1,1),
-                outline_color=(1,1,1,1),
+                color_label=(1, 1, 1, 1),
+                outline_color=(1, 1, 1, 1),
                 release_function=partial(self.touch_letter, letter)
             )
             self.add_widget(colored_rounded_button)
@@ -146,13 +153,13 @@ def build_keyboard(self):
                 background_color=self.background_color,
                 touch_color=self.touch_color,
                 pos_hint={
-                    "x": second_margin+counter*(self.horizontal_padding+self.size_letter),
+                    "x": second_margin + counter * (self.horizontal_padding + self.size_letter),
                     "y": vertical_padding + height_letter},
                 font_size=LETTER_FONT_SIZE,
                 font_ratio=self.font_ratio,
                 size_hint=(self.size_letter, height_letter),
-                color_label=(1,1,1,1),
-                outline_color=(1,1,1,1),
+                color_label=(1, 1, 1, 1),
+                outline_color=(1, 1, 1, 1),
                 release_function=partial(self.touch_letter, letter)
             )
             self.add_widget(colored_rounded_button)
@@ -167,13 +174,13 @@ def build_keyboard(self):
                 background_color=self.background_color,
                 touch_color=self.touch_color,
                 pos_hint={
-                    "x": third_margin+counter*(self.horizontal_padding+self.size_letter),
+                    "x": third_margin + counter * (self.horizontal_padding + self.size_letter),
                     "y": 0},
                 font_size=LETTER_FONT_SIZE,
                 font_ratio=self.font_ratio,
                 size_hint=(self.size_letter, height_letter),
-                color_label=(1,1,1,1),
-                outline_color=(1,1,1,1),
+                color_label=(1, 1, 1, 1),
+                outline_color=(1, 1, 1, 1),
                 release_function=partial(self.touch_letter, letter)
             )
             self.add_widget(colored_rounded_button)
@@ -186,23 +193,24 @@ def build_keyboard(self):
             background_color=self.background_color,
             touch_color=self.touch_color,
             pos_hint={
-                "x": third_margin+counter*(self.horizontal_padding+self.size_letter),
+                "x": third_margin + counter * (self.horizontal_padding + self.size_letter),
                 "y": 0},
             font_ratio=self.font_ratio,
-            size_hint=(self.size_letter*2+self.horizontal_padding, height_letter),
-            color_image=(1,1,1,1),
+            size_hint=(self.size_letter * 2 +
+                       self.horizontal_padding, height_letter),
+            color_image=(1, 1, 1, 1),
             release_function=partial(self.touch_letter, "DELETE")
         )
         self.add_widget(self.delete_key)
 
     def destroy_keyboard(self):
         """
         Remove all the keys of the keyboard.
-        
+
         Parameters
         ----------
         None
-        
+
         Returns
         -------
         None
@@ -214,75 +222,79 @@ def destroy_keyboard(self):
     def disable_delete_button(self):
         """
         Disable the delete button.
-        
+
         Parameters
         ----------
         None
-        
+
         Returns
         -------
         None
         """
-        self.delete_key.background_color = DISABLE_BUTTON_COLOR
+        # self.delete_key.background_color = DISABLE_BUTTON_COLOR
+        self.delete_key.opacity = 0.5
         self.delete_key.disable_button = True
 
     def activate_delete_button(self):
         """
         Enable the delete button.
-        
+
         Parameters
         ----------
         None
-        
+
         Returns
         -------
         None
         """
+        self.delete_key.opacity = 1
         self.delete_key.disable_button = False
-        self.delete_key.background_color = self.background_color
+        # self.delete_key.background_color = self.background_color
 
     def disable_letters(self):
         """
         Disable the buttons of the letters.
-        
+
         Parameters
         ----------
         None
-        
+
         Returns
         -------
         None
         """
         letter_key: ColoredRoundedButton
         for letter_key in self.list_letter_keys:
-            letter_key.background_color = DISABLE_BUTTON_COLOR
+            # letter_key.background_color = DISABLE_BUTTON_COLOR
             letter_key.disable_button = True
+            letter_key.opacity = 0.5
 
     def activate_letters(self):
         """
         Enable the buttons of the letters.
-        
+
         Parameters
         ----------
         None
-        
+
         Returns
         -------
         None
         """
         letter_key: ColoredRoundedButton
         for letter_key in self.list_letter_keys:
             letter_key.disable_button = False
-            letter_key.background_color = self.background_color
+            # letter_key.background_color = self.background_color
+            letter_key.opacity = 1
 
     def disable_whole_keyboard(self):
         """
         Disable the whole keyboard.
-        
+
         Parameters
         ----------
         None
-        
+
         Returns
         -------
         None
@@ -293,11 +305,11 @@ def disable_whole_keyboard(self):
     def activate_whole_keyboard(self):
         """
         Activate the whole keyboard.
-        
+
         Parameters
         ----------
         None
-        
+
         Returns
         -------
         None
@@ -308,12 +320,12 @@ def activate_whole_keyboard(self):
     def touch_letter(self, letter, *args):
         """
         Activate the function when a letter is pressed in the keyboard.
-        
+
         Parameters
         ----------
         letter : string
             Letter, it can be a capital letter or "DELETE"
-        
+
         Returns
         -------
         None