4 files changed, 35 insertions, 0 deletions
diff --git a/src/dolphinmainwindow.cpp b/src/dolphinmainwindow.cpp
index 12b8be955..efcd4190e 100644
--- a/src/dolphinmainwindow.cpp
+++ b/src/dolphinmainwindow.cpp
@@ -236,6 +236,7 @@ DolphinMainWindow::DolphinMainWindow()
     }
 
     updateAllowedToolbarAreas();
+    updateNavigatorsBackground();
 
     // enable middle-click on back/forward/up to open in a new tab
     auto *middleClickEventFilter = new MiddleClickActionEventFilter(this);
@@ -2760,6 +2761,12 @@ void DolphinMainWindow::updateAllowedToolbarAreas()
     }
 }
 
+void DolphinMainWindow::updateNavigatorsBackground()
+{
+    auto navigators = static_cast<DolphinNavigatorsWidgetAction *>(actionCollection()->action(QStringLiteral("url_navigators")));
+    navigators->setBackgroundEnabled(navigators->isInToolbar());
+}
+
 bool DolphinMainWindow::isKompareInstalled() const
 {
     static bool initialized = false;
@@ -2946,6 +2953,7 @@ void DolphinMainWindow::saveNewToolbarConfig()
         m_tabWidget->currentTabPage()->insertNavigatorsWidget(navigators);
     }
     updateAllowedToolbarAreas();
+    updateNavigatorsBackground();
     (static_cast<KHamburgerMenu *>(actionCollection()->action(KStandardAction::name(KStandardAction::HamburgerMenu))))->hideActionsOf(toolBar());
 }
 
diff --git a/src/dolphinmainwindow.h b/src/dolphinmainwindow.h
index ecc84b971..b6aa9c020 100644
--- a/src/dolphinmainwindow.h
+++ b/src/dolphinmainwindow.h
@@ -704,6 +704,12 @@ private:
      */
     void updateAllowedToolbarAreas();
 
+    /**
+     * Sets the background of the location bar(s) on if they are inside the toolbar,
+     * or off if they are outside the toolbar.
+     */
+    void updateNavigatorsBackground();
+
     bool isKompareInstalled() const;
 
     /**
diff --git a/src/dolphinnavigatorswidgetaction.cpp b/src/dolphinnavigatorswidgetaction.cpp
index 0095869b1..1e4e5df9c 100644
--- a/src/dolphinnavigatorswidgetaction.cpp
+++ b/src/dolphinnavigatorswidgetaction.cpp
@@ -9,6 +9,7 @@
 
 #include "trash/dolphintrash.h"
 
+#include <KCoreAddons>
 #include <KLocalizedString>
 #include <KNotificationJobUiDelegate>
 #include <KService>
@@ -102,6 +103,7 @@ void DolphinNavigatorsWidgetAction::createSecondaryUrlNavigator()
     Q_ASSERT(m_splitter->count() == 1);
     m_splitter->addWidget(createNavigatorWidget(Secondary));
     Q_ASSERT(m_splitter->count() == 2);
+    secondaryUrlNavigator()->setBackgroundEnabled(primaryUrlNavigator()->isBackgroundEnabled());
     updateText();
 }
 
@@ -148,6 +150,18 @@ void DolphinNavigatorsWidgetAction::setSecondaryNavigatorVisible(bool visible)
     updateText();
 }
 
+void DolphinNavigatorsWidgetAction::setBackgroundEnabled(bool enabled)
+{
+#if KIO_VERSION >= QT_VERSION_CHECK(6, 14, 0)
+    m_splitter->setAutoFillBackground(!enabled);
+    m_splitter->setBackgroundRole(enabled ? QPalette::Window : QPalette::Base);
+    primaryUrlNavigator()->setBackgroundEnabled(enabled);
+    if (secondaryUrlNavigator()) {
+        secondaryUrlNavigator()->setBackgroundEnabled(enabled);
+    }
+#endif
+}
+
 QWidget *DolphinNavigatorsWidgetAction::createWidget(QWidget *parent)
 {
     QWidget *oldParent = m_splitter->parentWidget();
diff --git a/src/dolphinnavigatorswidgetaction.h b/src/dolphinnavigatorswidgetaction.h
index 6f068e27d..c9ce4ece2 100644
--- a/src/dolphinnavigatorswidgetaction.h
+++ b/src/dolphinnavigatorswidgetaction.h
@@ -85,6 +85,13 @@ public:
      */
     void setSecondaryNavigatorVisible(bool visible);
 
+    /**
+     * Sets the background cosmetic of the location bar(s) visible or hidden.
+     * In frameless designs it's better to hide the background.
+     * @param enabled True for showing background cosmetic, false for hiding it.
+     */
+    void setBackgroundEnabled(bool enabled);
+
 protected:
     /**
      * There should always ever be one navigatorsWidget for this action so