Added DockWidgetBase::isOverlayed()

src/DockWidgetBase.cpp

@@ -497,6 +497,14 @@ void DockWidgetBase::moveToSideBar()
     }
 }
 
+bool DockWidgetBase::isOverlayed() const
+{
+    if (MainWindowBase *m = mainWindow())
+        return m->overlayedDockWidget() == this;
+
+    return false;
+}
+
 FloatingWindow *DockWidgetBase::morphIntoFloatingWindow()
 {
     qCDebug(creation) << "DockWidget::morphIntoFloatingWindow() this=" << this

src/DockWidgetBase.h

@@ -349,6 +349,10 @@ public:
      */
     void moveToSideBar();
 
+    /// @brief Returns whether this dock widget is overlayed on top of the main window, instead of
+    /// docked into the layout. This is only relevant when using the auto-hide and side-bar feature.
+    bool isOverlayed() const;
+
 Q_SIGNALS:
     ///@brief signal emitted when the parent changed
     void parentChanged();

src/MainWindowBase.cpp

@@ -293,6 +293,11 @@ SideBar *MainWindowBase::sideBarForDockWidget(DockWidgetBase *dw) const
     return nullptr;
 }
 
+DockWidgetBase *MainWindowBase::overlayedDockWidget() const
+{
+    return d->m_overlayedDockWidget;
+}
+
 void MainWindowBase::setUniqueName(const QString &uniqueName)
 {
     if (uniqueName.isEmpty())

src/MainWindowBase.h

@@ -155,6 +155,10 @@ public:
     /// @brief Returns the sidebar this dockwidget is in. nullptr if not in any.
     SideBar * sideBarForDockWidget(DockWidgetBase *) const;
 
+    /// @brief returns the dock widget which is currently overlayed. nullptr if none.
+    /// This is only relevant when using the auto-hide and side-bar feature.
+    DockWidgetBase *overlayedDockWidget() const;
+
 protected:
     void setUniqueName(const QString &uniqueName);