Merge branch 'main' into ungreedyify-textarea

Author: davep

CHANGELOG.md

@@ -32,6 +32,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - Fixed `OptionList.OptionHighlighted` leaking out of `Select` https://github.com/Textualize/textual/issues/4224
 - Fixed `Tab` enable/disable messages leaking into `TabbedContent` https://github.com/Textualize/textual/issues/4233
 - Fixed a style leak from `TabbedContent` https://github.com/Textualize/textual/issues/4232
+- Fixed active hidden scrollbars not releasing the mouse https://github.com/Textualize/textual/issues/4274
 - Fixed the mouse not being released when hiding a `TextArea` while mouse selection is happening https://github.com/Textualize/textual/issues/4292
 
 ### Changed

src/textual/app.py

@@ -2706,7 +2706,7 @@ def refresh_css(self, animate: bool = True) -> None:
         stylesheet.set_variables(self.get_css_variables())
         stylesheet.reparse()
         stylesheet.update(self.app, animate=animate)
-        self.screen._refresh_layout(self.size, full=True)
+        self.screen._refresh_layout(self.size)
         # The other screens in the stack will need to know about some style
         # changes, as a final pass let's check in on every screen that isn't
         # the current one and update them too.

src/textual/screen.py

@@ -751,9 +751,7 @@ def _pop_result_callback(self) -> None:
         """Remove the latest result callback from the stack."""
         self._result_callbacks.pop()
 
-    def _refresh_layout(
-        self, size: Size | None = None, full: bool = False, scroll: bool = False
-    ) -> None:
+    def _refresh_layout(self, size: Size | None = None, scroll: bool = False) -> None:
         """Refresh the layout (can change size and positions of widgets)."""
         size = self.outer_size if size is None else size
         if not size:
@@ -850,15 +848,15 @@ async def _on_update_scroll(self, message: messages.UpdateScroll) -> None:
 
     def _screen_resized(self, size: Size):
         """Called by App when the screen is resized."""
-        self._refresh_layout(size, full=True)
+        self._refresh_layout(size)
         self.refresh()
 
     def _on_screen_resume(self) -> None:
         """Screen has resumed."""
         self.stack_updates += 1
         self.app._refresh_notifications()
         size = self.app.size
-        self._refresh_layout(size, full=True)
+        self._refresh_layout(size)
         self.refresh()
         # Only auto-focus when the app has focus (textual-web only)
         if self.app.app_focus:

src/textual/widget.py

@@ -3165,7 +3165,7 @@ def _size_updated(
             if layout:
                 self.virtual_size = virtual_size
             else:
-                self._reactive_virtual_size = virtual_size
+                self.set_reactive(Widget.virtual_size, virtual_size)
             self._container_size = container_size
             if self.is_scrollable:
                 self._scroll_update(virtual_size)
@@ -3706,7 +3706,17 @@ def _on_scroll_right(self, event: ScrollRight) -> None:
             self.scroll_page_right()
             event.stop()
 
+    def _on_show(self, event: events.Show) -> None:
+        if self.show_horizontal_scrollbar:
+            self.horizontal_scrollbar.post_message(event)
+        if self.show_vertical_scrollbar:
+            self.vertical_scrollbar.post_message(event)
+
     def _on_hide(self, event: events.Hide) -> None:
+        if self.show_horizontal_scrollbar:
+            self.horizontal_scrollbar.post_message(event)
+        if self.show_vertical_scrollbar:
+            self.vertical_scrollbar.post_message(event)
         if self.has_focus:
             self.blur()