Added focusable_children property

src/textual/app.py

@@ -215,7 +215,7 @@ class App(Generic[ReturnType], DOMNode):
         widgets: list[Widget] = []
         add_widget = widgets.append
         root = self.screen
-        stack: list[Iterator[Widget]] = [iter(root.displayed_children)]
+        stack: list[Iterator[Widget]] = [iter(root.focusable_children)]
         pop = stack.pop
         push = stack.append
 
@@ -225,7 +225,7 @@ class App(Generic[ReturnType], DOMNode):
                 pop()
             else:
                 if node.is_container and node.can_focus:
-                    push(iter(node.displayed_children))
+                    push(iter(node.focusable_children))
                 else:
                     if node.can_focus:
                         add_widget(node)

src/textual/dom.py

@@ -313,8 +313,15 @@ class DOMNode(MessagePump):
 
     @property
     def displayed_children(self) -> list[DOMNode]:
+        """The children which don't have display: none set."""
         return [child for child in self.children if child.display]
 
+    @property
+    def focusable_children(self) -> list[DOMNode]:
+        """Get the children which may be focused."""
+        # TODO: This may be the place to define order, other focus related rules
+        return [child for child in self.children if child.display and child.visible]
+
     def get_pseudo_classes(self) -> Iterable[str]:
         """Get any pseudo classes applicable to this Node, e.g. hover, focus.
 

tests/renderables/test_tint.py

@@ -0,0 +1,17 @@
+import io
+
+from rich.console import Console
+from rich.text import Text
+
+from textual.color import Color
+from textual.renderables.tint import Tint
+
+
+def test_tint():
+    console = Console(file=io.StringIO(), force_terminal=True, color_system="truecolor")
+    renderable = Text.from_markup("[#aabbcc on #112233]foo")
+    console.print(Tint(renderable, Color(0, 100, 0, 0.5)))
+    output = console.file.getvalue()
+    print(repr(output))
+    expected = "\x1b[38;2;85;143;102;48;2;8;67;25mfoo\x1b[0m\n"
+    assert output == expected