Fix non active screen updates

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## [0.79.1] - 2024-08-31
+
+### Fixed
+
+- Fixed broken updates when non active screen changes https://github.com/Textualize/textual/pull/4957
+
 ## [0.79.0] - 2024-08-30
 
 ### Added

docs/tutorial.md

@@ -31,6 +31,12 @@ Here's what the finished app will look like:
 ```{.textual path="docs/examples/tutorial/stopwatch.py" title="stopwatch.py" press="tab,enter,tab,enter,tab,enter,tab,enter"}
 ```
 
+!!! info
+
+    Did you notice the `^p palette` at the bottom right hand corner?
+    This is the [Command Palette](./guide/command_palette.md).
+    You can think of it as a dedicated command prompt for your app.
+
 ### Try it out!
 
 The following is *not* a screenshot, but a fully interactive Textual app running in your browser.

examples/dictionary.py

@@ -18,7 +18,7 @@ class DictionaryApp(App):
     CSS_PATH = "dictionary.tcss"
 
     def compose(self) -> ComposeResult:
-        yield Input(placeholder="Search for a word")
+        yield Input(placeholder="Search for a word", id="dictionary-search")
         with VerticalScroll(id="results-container"):
             yield Markdown(id="results")
 

examples/dictionary.tcss

@@ -2,7 +2,7 @@ Screen {
     background: $panel;
 }
 
-Input {
+Input#dictionary-search {
     dock: top;
     margin: 1 0;
 }

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "textual"
-version = "0.79.0"
+version = "0.79.1"
 homepage = "https://github.com/Textualize/textual"
 repository = "https://github.com/Textualize/textual"
 documentation = "https://textual.textualize.io/"

src/textual/screen.py

@@ -935,8 +935,9 @@ def _compositor_refresh(self) -> None:
             elif (
                 self in self.app._background_screens and self._compositor._dirty_regions
             ):
-                # Background screen
+                self._set_dirty(*self._compositor._dirty_regions)
                 app.screen.refresh(*self._compositor._dirty_regions)
+                self._repaint_required = True
                 self._compositor._dirty_regions.clear()
                 self._dirty_widgets.clear()
         app._update_mouse_over(self)
@@ -1097,6 +1098,7 @@ async def _on_update(self, message: messages.Update) -> None:
         message.prevent_default()
         widget = message.widget
         assert isinstance(widget, Widget)
+
         self._dirty_widgets.add(widget)
         self.check_idle()
 

tests/snapshot_tests/test_snapshots.py

@@ -1460,10 +1460,14 @@ def test_system_commands(snap_compare):
 
     class SimpleApp(App):
         def compose(self) -> ComposeResult:
-            yield Input()
+            input = Input()
+            input.cursor_blink = False
+            yield input
 
+    app = SimpleApp()
+    app.animation_level = "none"
     assert snap_compare(
-        SimpleApp(),
+        app,
         terminal_size=(100, 30),
         press=["ctrl+p"],
     )