updated (#2469)

arcade/application.py

@@ -18,7 +18,7 @@
 
 import arcade
 from arcade.clock import GLOBAL_CLOCK, GLOBAL_FIXED_CLOCK, _setup_clock, _setup_fixed_clock
-from arcade.color import TRANSPARENT_BLACK
+from arcade.color import BLACK
 from arcade.context import ArcadeContext
 from arcade.types import LBWH, Color, Rect, RGBANormalized, RGBOrA255
 from arcade.utils import is_raspberry_pi
@@ -268,7 +268,7 @@ def __init__(
         self.push_handlers(on_resize=self._on_resize)
 
         self._ctx: ArcadeContext = ArcadeContext(self, gc_mode=gc_mode, gl_api=gl_api)
-        self._background_color: Color = TRANSPARENT_BLACK
+        self._background_color: Color = BLACK
 
         self._current_view: View | None = None
 
@@ -1240,7 +1240,9 @@ def __init__(
         self, window: Window | None = None, background_color: RGBOrA255 | None = None
     ) -> None:
         self.window = arcade.get_window() if window is None else window
-        self.background_color: RGBOrA255 | None = background_color
+        self._background_color: Color | None = background_color and Color.from_iterable(
+            background_color
+        )
 
     def clear(
         self,
@@ -1250,7 +1252,7 @@ def clear(
     ) -> None:
         """
         Clears the window with the configured background color
-        set through :py:attr:`arcade.Window.background_color`.
+        set through :py:attr:`arcade.View.background_color`.
 
         Args:
             color(optional):
@@ -1570,3 +1572,32 @@ def center_y(self) -> float:
         An alias for `arcade.Window.center_y`
         """
         return self.window.center_y
+
+    @property
+    def background_color(self) -> Color | None:
+        """
+        Get or set the background color for this view.
+        This affects what color the window will contain when
+        :py:meth:`~arcade.View.clear` is called.
+
+        Examples::
+
+            # Use Arcade's built in Color values
+            view.background_color = arcade.color.AMAZON
+
+            # Set the background color with a custom Color instance
+            MY_RED = arcade.types.Color(255, 0, 0)
+            view.background_color = MY_RED
+
+            # Set the background color directly from an RGBA tuple
+            view.background_color = 255, 0, 0, 255
+
+            # Set the background color directly from an RGB tuple
+            # RGB tuples will assume 255 as the opacity / alpha value
+            view.background_color = 255, 0, 0
+        """
+        return self._background_color
+
+    @background_color.setter
+    def background_color(self, value: RGBOrA255) -> None:
+        self._background_color = Color.from_iterable(value)

tests/unit/window/test_view.py

@@ -1,6 +1,6 @@
 from unittest.mock import Mock
 
-from arcade import Window, View
+from arcade import Window, View, color, get_image
 
 
 def test_on_show_view_called(window):
@@ -24,3 +24,11 @@ def test_on_hide_view_called(window):
     window.show_view(view2)
 
     hide_mock.assert_called_once()
+
+def test_view_background_color(window):
+    view = View(window, color.ARCADE_GREEN)
+    assert view.background_color == color.ARCADE_GREEN
+    window.clear()
+    # assert get_image(0, 0, 1, 1).getpixel((0, 0)) == color.BLACK
+    view.clear()
+    # assert get_image(0, 0, 1, 1).getpixel((0, 0)) == color.ARCADE_GREEN