fix: restore focus of last split when restoring (#5080)

CHANGELOG.md

@@ -65,6 +65,7 @@
 - Bugfix: Fixed avatar in usercard and moderation button triggering when releasing the mouse outside their area. (#5052)
 - Bugfix: Fixed moderator-only topics being subscribed to for non-moderators. (#5056)
 - Bugfix: Fixed a bug where buttons would remain in a hovered state after leaving them. (#5077)
+- Bugfix: Fixed splits not retaining their focus after minimizing. (#5080)
 - Dev: Run miniaudio in a separate thread, and simplify it to not manage the device ourselves. There's a chance the simplification is a bad idea. (#4978)
 - Dev: Change clang-format from v14 to v16. (#4929)
 - Dev: Fixed UTF16 encoding of `modes` file for the installer. (#4791)

src/widgets/Notebook.cpp

@@ -1332,13 +1332,19 @@ SplitNotebook::SplitNotebook(Window *parent)
         });
 }
 
-void SplitNotebook::showEvent(QShowEvent *)
+void SplitNotebook::showEvent(QShowEvent * /*event*/)
 {
-    if (auto page = this->getSelectedPage())
+    if (auto *page = this->getSelectedPage())
     {
-        if (auto split = page->findChild<Split *>())
+        auto *split = page->getSelectedSplit();
+        if (!split)
         {
-            split->setFocus(Qt::FocusReason::OtherFocusReason);
+            split = page->findChild<Split *>();
+        }
+
+        if (split)
+        {
+            split->setFocus(Qt::OtherFocusReason);
         }
     }
 }