Update colors before on_start

Merge pull request #1675 from kivymd/issue-1674

examples/bottomappbar.py

@@ -172,7 +172,6 @@ async def generate_card():
                     }
                 )
 
-        super().on_start()
         self.on_tap_card()
         fake = Faker()
         Clock.schedule_once(lambda x: asynckivy.start(generate_card()))

examples/button.py

@@ -191,7 +191,6 @@ def disabled_widgets(self):
             button.disabled = not button.disabled
 
     def on_start(self):
-        super().on_start()
         styles = ["standard", "filled", "outlined", "tonal"]
         color_disabled = [
             0.4627450980392157,

examples/card.py

@@ -45,7 +45,6 @@ def build(self):
         return Builder.load_string(KV)
 
     def on_start(self):
-        super().on_start()
         color_disabled = [
             0.4627450980392157,
             0.47058823529411764,

examples/checkbox.py

@@ -11,7 +11,6 @@ def build(self):
         return Builder.load_string(KV)
 
     def on_start(self):
-        super().on_start()
         self.root.ids.widget_box.add_widget(MDCheckbox())
         self.root.ids.custom_widget_box.add_widget(
             MDCheckbox(

examples/chip.py

@@ -12,7 +12,6 @@ def build(self):
         return Builder.load_string(KV)
 
     def on_start(self):
-        super().on_start()
         for chip_type in ["assist", "input", "suggestion", "filter"]:
             self.root.ids.widget_box.add_widget(
                 MDChip(

examples/dynamic_color_image.py

@@ -84,7 +84,6 @@ def generate_cards(self, *args):
             )
 
     def on_start(self):
-        super().on_start()
         Clock.schedule_once(self.generate_cards)
 
 

examples/dynamic_color_schemes.py

@@ -57,7 +57,6 @@ def build(self):
         return Builder.load_string(KV)
 
     def on_start(self):
-        super().on_start()
         parent_widget = self.root.ids.widget_box.parent.parent
         parent_widget.clear_widgets() 
         self.container = Container()

examples/expansionpanel.py

@@ -105,7 +105,6 @@ async def set_panel_list():
                 await asynckivy.sleep(0)
                 self.root.ids.container.add_widget(ExpansionPanelItem())
 
-        super().on_start()
         asynckivy.start(set_panel_list())
 
     def build(self):

examples/label.py

@@ -61,7 +61,6 @@ def create_widgets(self):
                     )
 
     def on_start(self):
-        super().on_start()
         self.create_widgets()
 
 

examples/list.py

@@ -24,7 +24,6 @@ def on_tap_list_item(self, list_item: MDListItem):
         print("on_tap_list_item")
 
     def on_start(self):
-        super().on_start()
         self.root.ids.widget_box.orientation = "vertical"
         self.root.ids.widget_box.add_widget(
             MDListItem(

examples/material_scroll.py

@@ -83,7 +83,6 @@ def build(self):
         return Builder.load_string(MAIN_KV)
 
     def on_start(self):
-        super().on_start()
         info = {
             "Name": [
                 os.name,

examples/navigation_bar.py

@@ -26,7 +26,6 @@ def on_switch_tabs(
         ...
 
     def on_start(self):
-        super().on_start()
         self.root.ids.widget_box.height = dp(80)
         self.root.ids.widget_box.add_widget(
             MDNavigationBar(

examples/slider.py

@@ -12,7 +12,6 @@ def build(self):
         return Builder.load_string(KV)
 
     def on_start(self):
-        super().on_start()
         self.root.ids.widget_box.add_widget(
             MDSlider(
                 MDSliderHandle(),

examples/snackbar.py

@@ -43,7 +43,6 @@ def disabled_widgets(self):
         ...
 
     def on_start(self):
-        super().on_start()
         data = {
             "Single-line snackbar": self.show_snack_single_line,
             "Single-line snackbar with action": self.show_snack_single_line_with_action,

examples/switch.py

@@ -11,7 +11,6 @@ def build(self):
         return Builder.load_string(KV)
 
     def on_start(self):
-        super().on_start()
         self.root.ids.widget_box.add_widget(
             MDSwitch(
                 icon_active="check",

examples/tab.py

@@ -49,7 +49,6 @@
 
 class Example(MDApp, CommonApp):
     def on_start(self):
-        super().on_start()
         for type_tabs in ["primary", "secondary"]:
             if type_tabs == "primary":
                 tabs = self.root.ids.primary_tabs

examples/textfield.py

@@ -18,7 +18,6 @@ def build(self):
         return Builder.load_string(KV)
 
     def on_start(self):
-        super().on_start()
         for mode in ["outlined", "filled", "required"]:
             self.root.ids.widget_box.add_widget(
                 MDTextField(

kivymd/app.py

@@ -28,7 +28,6 @@ def build(self):
             return Builder.load_string(KV)
 
         def on_start(self):
-            super().on_start()
             self.fps_monitor_start()
 
 
@@ -50,7 +49,6 @@ def build(self):
                 [...]
 
             def on_start(self):
-                super().on_start()
                 [...]
 """
 
@@ -135,27 +133,13 @@ def __init__(self, **kwargs):
         super().__init__(**kwargs)
         self.theme_cls = ThemeManager()
 
-    def on_start(self):
-        """
-        Event handler for the `on_start` event which is fired after
-        initialization (after build() has been called) but before the
-        application has started running.
-
-        .. versionadded:: 2.0.0
-        """
-
-        def on_start(*args):
-            self.theme_cls.bind(
-                theme_style=lambda *x: Clock.schedule_once(
-                    self.theme_cls.update_theme_colors, 0.1
-                ),
-                primary_palette=lambda *x: Clock.schedule_once(
-                    self.theme_cls.set_colors, 0.1
-                ),
-            )
-            self.theme_cls.set_colors()
-
-        Clock.schedule_once(on_start)
+    def _run_prepare(self):
+        self.theme_cls.bind(
+            theme_style=self.theme_cls.update_theme_colors,
+            primary_palette=self.theme_cls.set_colors
+        )
+        self.theme_cls.set_colors()
+        super()._run_prepare()
 
     def load_all_kv_files(self, path_to_directory: str) -> None:
         """

kivymd/dynamic_color.py

@@ -163,7 +163,6 @@ def generate_cards(self, *args):
                 )
 
         def on_start(self):
-            super().on_start()
             Clock.schedule_once(self.generate_cards)
 
 
@@ -267,7 +266,6 @@ def generate_cards(self, *args):
                 )
 
         def on_start(self):
-            super().on_start()
             Clock.schedule_once(self.generate_cards)
 
 

kivymd/icon_definitions.py

@@ -114,7 +114,6 @@ def build(self):
             return self.screen
 
         def on_start(self):
-            super().on_start()
             self.screen.set_list_md_icons()
 
 
@@ -7669,7 +7668,6 @@ def build(self):
             return self.screen
 
         def on_start(self):
-            super().on_start()
             self.screen.set_list_md_icons()
 
     MainApp().run()

kivymd/tests/button/test_bg_color_after_changed_theme.py

@@ -40,7 +40,6 @@ def change_palette(self, *args):
         Clock.schedule_once(self.check_button_colors, 1.2)
 
     def on_start(self):
-        super().on_start()
         Clock.schedule_once(self.change_palette, 1.2)
 
 

kivymd/tests/button/test_fab_size_m3_style.py

@@ -31,7 +31,6 @@ def check_size_button(self, *args):
         self.stop()
 
     def on_start(self):
-        super().on_start()
         styles = ["standard", "small", "large"]
         for style in styles:
             self.root.ids.box.add_widget(

kivymd/tests/button/test_icon_button_md_bg_color_disabled.py

@@ -29,7 +29,6 @@ def check_button_md_bg_color_disabled(self, button):
         ].rgba == [1.0, 0.0, 0.0, 1.0]
 
     def on_start(self):
-        super().on_start()
         self.generate_buttons()
 
 

kivymd/tests/button/test_md_icon_button_icon_size.py

@@ -27,7 +27,6 @@ def check_icon_size(self, *args):
         self.stop()
 
     def on_start(self):
-        super().on_start()
         Clock.schedule_once(self.check_icon_size, 1.2)
 
 

kivymd/tests/button/test_on_release.py

@@ -32,7 +32,6 @@ def press_button(self, *args):
         Clock.schedule_once(self.check_release_flag, 2)
 
     def on_start(self):
-        super().on_start()
         Clock.schedule_once(self.press_button, 1)
 
 

kivymd/tests/button/test_outline_button_custom_color.py

@@ -26,7 +26,6 @@ def check_button_colors(self, *args):
         self.stop()
 
     def on_start(self):
-        super().on_start()
         Clock.schedule_once(self.check_button_colors, 1.2)
 
 

kivymd/tests/button/test_outline_button_custom_color_after_disabled.py

@@ -39,7 +39,6 @@ def check_button_colors_control(dt):
             Clock.schedule_once(check_button_colors_control, 1.2)
 
     def on_start(self):
-        super().on_start()
         Clock.schedule_once(self.check_button_colors, 1.2)
 
 

kivymd/tests/button/test_size_hint.py

@@ -22,7 +22,6 @@ def check_button_size(self, button):
         self.stop()
 
     def on_start(self):
-        super().on_start()
         self.generate_buttons()
 
 

kivymd/tests/hero/test_with_first_screen_without_hero.py

@@ -89,7 +89,6 @@ def set_screen_with_hero_from(self, *args):
         Clock.schedule_once(self.move_hero_to_another_screen, 1)
 
     def on_start(self):
-        super().on_start()
         Clock.schedule_once(self.set_screen_with_hero_from, 1)
 
 

kivymd/tests/label/test_allow_copy.py

@@ -30,7 +30,6 @@ def on_start(*args):
             touch = MouseMotionEvent("mouse", "button", self.root.ids.label.pos)
             self.root.ids.label.on_double_tap(touch, ())
 
-        super().on_start()
         Clock.schedule_once(on_start, 1)
 
 

kivymd/tests/label/test_color_deselection.py

@@ -26,7 +26,6 @@ def check_selection(self, *args):
         self.stop()
 
     def on_start(self):
-        super().on_start()
         self.touch = MouseMotionEvent(
             "mouse", "button", self.root.ids.label.pos
         )

kivymd/tests/label/test_color_selection.py

@@ -26,7 +26,6 @@ def check_selection(self, *args):
         self.stop()
 
     def on_start(self):
-        super().on_start()
         touch = MouseMotionEvent("mouse", "button", self.root.ids.label.pos)
         self.root.ids.label.on_double_tap(touch, ())
         Clock.schedule_once(self.check_selection)

kivymd/tests/label/test_default_theme_text_color.py

@@ -29,7 +29,6 @@ async def generate_labels(self):
         self.stop()
 
     def on_start(self):
-        super().on_start()
         asynckivy.start(self.generate_labels())
 
 

kivymd/tests/label/test_disabled_color.py

@@ -27,7 +27,6 @@ def check_disabled_color(self, *args):
         self.stop()
 
     def on_start(self):
-        super().on_start()
         Clock.schedule_once(self.check_disabled_color, 1)
 
 

kivymd/tests/label/test_font_size_in_python_code.py

@@ -27,7 +27,6 @@ def build(self):
         )
 
     def on_start(self):
-        super().on_start()
         Clock.schedule_once(self.check_font_size, 1.2)
 
 

kivymd/tests/label/test_font_style.py

@@ -60,7 +60,6 @@ def on_start(*args):
             )
             self.stop()
 
-        super().on_start()
         Clock.schedule_once(on_start, 2)
 
 

kivymd/tests/label/test_md_icon_badge_colors.py

@@ -27,7 +27,6 @@ def check_badge_colors(self, *args):
         self.stop()
 
     def on_start(self):
-        super().on_start()
         Clock.schedule_once(self.check_badge_colors, 2)
 
 

kivymd/tests/label/test_md_icon_badge_colors_after_disabled.py

@@ -31,7 +31,6 @@ def check_badge_colors(self, *args):
         self.stop()
 
     def on_start(self):
-        super().on_start()
         Clock.schedule_once(self.icon_undisabled, 1)
         Clock.schedule_once(self.check_badge_colors, 2)
 

kivymd/tests/label/test_switch_theme.py

@@ -39,7 +39,6 @@ def switch_screen_two(self, *args):
         self.root.current = "screen two"
 
     def on_start(self):
-        super().on_start()
         Clock.schedule_once(self.switch_screen_two, 1)
 
     def build(self):

kivymd/tests/label/test_theme_text_color.py

@@ -24,7 +24,6 @@ def on_start(*args):
             assert self.root.ids.label.text_color == [1.0, 0.0, 0.0, 1.0]
             self.stop()
 
-        super().on_start()
         Clock.schedule_once(on_start, 2)
 
 

kivymd/tests/list/test_disable.py

@@ -71,7 +71,6 @@ def _disable(*args):
             self.root.ids.item4.disabled = True
             Clock.schedule_once(_enabled, 1)
 
-        super().on_start()
         Clock.schedule_once(_disable, 1)
 
 

kivymd/tests/test_md_bg_color_layouts.py

@@ -44,7 +44,6 @@ async def generate_layouts(self):
         self.stop()
 
     def on_start(self):
-        super().on_start()
         asynckivy.start(self.generate_layouts())
 
     def check_md_bg_color(self, widget):