Add insert order for overlayed widget to the side tab bar

- Set the default insert order to append

src/DockAreaWidget.cpp

@@ -1097,7 +1097,7 @@ void CDockAreaWidget::onAutoHideToggleRequested(CDockWidget* DockWidget, bool En
 {
     if (Enable)
     {
-        dockContainer()->createAndInitializeDockWidgetOverlayContainer(area, DockWidget);
+        dockContainer()->createAndInitializeDockWidgetOverlayContainer(area, DockWidget, DockWidget->overlayInsertOrder());
     }
     else
 	{

src/DockContainerWidget.cpp

@@ -1485,7 +1485,7 @@ CDockAreaWidget* CDockContainerWidget::addDockWidget(DockWidgetArea area, CDockW
 
 
 //============================================================================
-COverlayDockContainer* CDockContainerWidget::createAndInitializeDockWidgetOverlayContainer(CDockWidgetSideTab::SideTabBarArea area, CDockWidget* DockWidget)
+COverlayDockContainer* CDockContainerWidget::createAndInitializeDockWidgetOverlayContainer(CDockWidgetSideTab::SideTabBarArea area, CDockWidget* DockWidget, CDockWidget::eOverlayInsertOrder insertOrder)
 {
 	if (d->DockManager != DockWidget->dockManager())
 	{
@@ -1498,7 +1498,7 @@ COverlayDockContainer* CDockContainerWidget::createAndInitializeDockWidgetOverla
 		return nullptr;
 	}
 
-    sideTabBar(area)->insertSideTab(0, DockWidget->sideTabWidget());
+    sideTabBar(area)->insertSideTab(insertOrder == CDockWidget::First ? 0 : -1, DockWidget->sideTabWidget());
     DockWidget->sideTabWidget()->show();
 
 	const auto dockContainer = new COverlayDockContainer(DockWidget, area, this);
@@ -1800,7 +1800,7 @@ void CDockContainerWidget::dropFloatingWidget(CFloatingDockContainer* FloatingWi
 	auto overlayWidgets = FloatingWidget->dockContainer()->overlayWidgets();
 	for (const auto overlayWidget : overlayWidgets)
 	{
-		createAndInitializeDockWidgetOverlayContainer(overlayWidget->sideTabBarArea(), overlayWidget->dockWidget());
+		createAndInitializeDockWidgetOverlayContainer(overlayWidget->sideTabBarArea(), overlayWidget->dockWidget(), overlayWidget->dockWidget()->overlayInsertOrder());
 	}
 
 	if (DockArea)

src/DockContainerWidget.h

@@ -95,13 +95,12 @@ protected:
 	 */
 	QSplitter* rootSplitter() const;
 
-
 	/**
 	 * Creates and initializes a dockwidget overlay container into the given area.
 	 * Initializing inserts the tabs into the side tab widget and hides it
 	 * Returns nullptr if you try and insert into an area where the configuration is not enabled
 	 */
-	COverlayDockContainer* createAndInitializeDockWidgetOverlayContainer(CDockWidgetSideTab::SideTabBarArea area, CDockWidget* DockWidget);
+	COverlayDockContainer* createAndInitializeDockWidgetOverlayContainer(CDockWidgetSideTab::SideTabBarArea area, CDockWidget* DockWidget, CDockWidget::eOverlayInsertOrder insertOrder);
 
 	/**
 	 * Helper function for creation of the root splitter
@@ -198,7 +197,6 @@ protected:
 
 
 public:
-
 	/**
 	 * Default Constructor
 	 */

src/DockManager.cpp

@@ -864,16 +864,16 @@ CDockAreaWidget* CDockManager::addDockWidgetToContainer(DockWidgetArea area,
 }
 
 //============================================================================
-COverlayDockContainer* CDockManager::addOverlayDockWidget(CDockWidgetSideTab::SideTabBarArea area, CDockWidget* Dockwidget)
+COverlayDockContainer* CDockManager::addOverlayDockWidget(CDockWidgetSideTab::SideTabBarArea area, CDockWidget* Dockwidget, CDockWidget::eOverlayInsertOrder insertOrder)
 {
-	return addOverlayDockWidgetToContainer(area, Dockwidget, this);
+	return addOverlayDockWidgetToContainer(area, Dockwidget, this, insertOrder);
 }
 
 //============================================================================
-COverlayDockContainer* CDockManager::addOverlayDockWidgetToContainer(CDockWidgetSideTab::SideTabBarArea area, CDockWidget* Dockwidget, CDockContainerWidget* DockContainerWidget)
+COverlayDockContainer* CDockManager::addOverlayDockWidgetToContainer(CDockWidgetSideTab::SideTabBarArea area, CDockWidget* Dockwidget, CDockContainerWidget* DockContainerWidget, CDockWidget::eOverlayInsertOrder insertOrder)
 {
 	d->DockWidgetsMap.insert(Dockwidget->objectName(), Dockwidget);
-	auto container = DockContainerWidget->createAndInitializeDockWidgetOverlayContainer(area, Dockwidget);
+	auto container = DockContainerWidget->createAndInitializeDockWidgetOverlayContainer(area, Dockwidget, insertOrder);
 	container->collapseView(true);
 
 	Q_EMIT dockWidgetAdded(Dockwidget);

src/DockManager.h

@@ -341,14 +341,14 @@ public:
 	 * An overlay widget is used for auto hide functionality
 	 * \return Returns the COverlayDockContainer that contains the new DockWidget
 	 */
-	COverlayDockContainer* addOverlayDockWidget(CDockWidgetSideTab::SideTabBarArea area, CDockWidget* Dockwidget);
+	COverlayDockContainer* addOverlayDockWidget(CDockWidgetSideTab::SideTabBarArea area, CDockWidget* Dockwidget, CDockWidget::eOverlayInsertOrder insertOrder = CDockWidget::Last);
 
 	/**
 	 * Adds dock widget overlayed into the given container based on the CDockWidgetSideTab::SideTabBarArea.
 	 * An overlay widget is used for auto hide functionality
 	 * \return Returns the COverlayDockContainer that contains the new DockWidget
 	 */
-	COverlayDockContainer* addOverlayDockWidgetToContainer(CDockWidgetSideTab::SideTabBarArea area, CDockWidget* Dockwidget, CDockContainerWidget* DockContainerWidget);
+	COverlayDockContainer* addOverlayDockWidgetToContainer(CDockWidgetSideTab::SideTabBarArea area, CDockWidget* Dockwidget, CDockContainerWidget* DockContainerWidget, CDockWidget::eOverlayInsertOrder = CDockWidget::Last);
 
 	/**
 	 * This function will add the given Dockwidget to the given dock area as

src/DockWidget.cpp

@@ -96,6 +96,7 @@ struct DockWidgetPrivate
 	CDockWidget::eMinimumSizeHintMode MinimumSizeHintMode = CDockWidget::MinimumSizeHintFromDockWidget;
 	WidgetFactory* Factory = nullptr;
 	double DefaultOverlayDockProportion = 0.25;
+	CDockWidget::eOverlayInsertOrder OverlayInsertOrder = CDockWidget::Last;
 	
 	/**
 	 * Private data constructor
@@ -1149,6 +1150,18 @@ double CDockWidget::DefaultOverlayDockProportion() const
 }
 
 
+//============================================================================
+void CDockWidget::setOverlayInsertOrder(eOverlayInsertOrder insertOrder)
+{
+	d->OverlayInsertOrder = insertOrder;
+}
+
+CDockWidget::eOverlayInsertOrder CDockWidget::overlayInsertOrder() const
+{
+	return d->OverlayInsertOrder;
+}
+
+
 //============================================================================
 void CDockWidget::raise()
 {

src/DockWidget.h

@@ -229,6 +229,17 @@ public:
         ActionModeShow   //!< ActionModeShow
     };
 
+    /**
+     * This mode configures the order of pinning and unpinning overlayed widgets
+     * First will add it to the top of the SideTabBar, while last will append it to the end
+     */
+	enum eOverlayInsertOrder
+	{
+		First,
+		Last
+	};
+
+
 
     /**
      * This constructor creates a dock widget with the given title.
@@ -524,6 +535,16 @@ public:
 	 */
 	double DefaultOverlayDockProportion() const;
 
+	/*
+	 * Set overlay insertion mode
+	 */
+	void setOverlayInsertOrder(eOverlayInsertOrder insertOrder);
+
+	/*
+	 * Get overlay insertion mode
+	 */
+	eOverlayInsertOrder overlayInsertOrder() const;
+
 public: // reimplements QFrame -----------------------------------------------
     /**
      * Emits titleChanged signal if title change event occurs

src/SideTabBar.cpp

@@ -71,12 +71,17 @@ CSideTabBar::CSideTabBar(CDockContainerWidget* parent, Qt::Orientation orientati
     d->ContainerWidget = parent;
     d->Orientation = orientation;
 
+    auto mainLayout = new QBoxLayout(d->Orientation == Qt::Vertical ? QBoxLayout::TopToBottom : QBoxLayout::LeftToRight);
+
     d->TabsLayout = new QBoxLayout(d->Orientation == Qt::Vertical ? QBoxLayout::TopToBottom : QBoxLayout::LeftToRight);
     d->TabsLayout->setContentsMargins(0, 0, 0, 0);
     d->TabsLayout->setSpacing(0);
-    d->TabsLayout->addStretch(1);
+    mainLayout->addLayout(d->TabsLayout);
-    setLayout(d->TabsLayout);
+    mainLayout->setContentsMargins(0, 0, 0, 0);
+    mainLayout->setSpacing(0);
+    mainLayout->addStretch(1);
 
+    setLayout(mainLayout);
     setFocusPolicy(Qt::NoFocus);
 }