Ensure the SideTab is hidden if empty

src/SideTabBar.cpp

@@ -54,6 +54,15 @@ struct SideTabBarPrivate
     CDockContainerWidget* ContainerWidget;
     QBoxLayout* TabsLayout;
     Qt::Orientation Orientation;
+    CDockWidgetSideTab::SideTabBarArea SideTabArea = CDockWidgetSideTab::Left;
+
+    /**
+     * Convenience function to check if this is a horizontal side bar
+     */
+    bool isHorizontal() const
+    {
+    	return Qt::Horizontal == Orientation;
+    }
 }; // struct SideTabBarPrivate
 
 //============================================================================
@@ -64,12 +73,14 @@ SideTabBarPrivate::SideTabBarPrivate(CSideTabBar* _public) :
 
 
 //============================================================================
-CSideTabBar::CSideTabBar(CDockContainerWidget* parent, Qt::Orientation orientation) :
+CSideTabBar::CSideTabBar(CDockContainerWidget* parent, CDockWidgetSideTab::SideTabBarArea area) :
-    QWidget(parent),
+    Super(parent),
     d(new SideTabBarPrivate(this))
 {
+	d->SideTabArea = area;
     d->ContainerWidget = parent;
-    d->Orientation = orientation;
+    d->Orientation = (area == CDockWidgetSideTab::Bottom || area == CDockWidgetSideTab::Top)
+    	? Qt::Horizontal : Qt::Vertical;
 
     auto mainLayout = new QBoxLayout(d->Orientation == Qt::Vertical ? QBoxLayout::TopToBottom : QBoxLayout::LeftToRight);
 
@@ -80,9 +91,19 @@ CSideTabBar::CSideTabBar(CDockContainerWidget* parent, Qt::Orientation orientati
     mainLayout->setContentsMargins(0, 0, 0, 0);
     mainLayout->setSpacing(0);
     mainLayout->addStretch(1);
-
     setLayout(mainLayout);
+
     setFocusPolicy(Qt::NoFocus);
+	if (d->isHorizontal())
+	{
+		setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
+	}
+	else
+	{
+		setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Expanding);
+	}
+
+	hide();
 }
 
 
@@ -98,6 +119,7 @@ void CSideTabBar::insertSideTab(int Index, CDockWidgetSideTab* SideTab)
 {
     d->TabsLayout->insertWidget(Index, SideTab);
     SideTab->setSideTabBar(this);
+    show();
 }
 
 
@@ -105,6 +127,10 @@ void CSideTabBar::insertSideTab(int Index, CDockWidgetSideTab* SideTab)
 void CSideTabBar::removeSideTab(CDockWidgetSideTab* SideTab)
 {
     d->TabsLayout->removeWidget(SideTab);
+    if (d->TabsLayout->isEmpty())
+    {
+    	hide();
+    }
 }
 
 
@@ -139,4 +165,11 @@ int CSideTabBar::tabCount() const
 {
     return d->TabsLayout->count();
 }
+
+
+//============================================================================
+CDockWidgetSideTab::SideTabBarArea  CSideTabBar::sideTabBarArea() const
+{
+	return d->SideTabArea;
+}
 }

src/SideTabBar.h

@@ -29,7 +29,8 @@
 //============================================================================
 //                                   INCLUDES
 //============================================================================
-#include <QWidget>
+#include <QFrame>
+#include "DockWidgetSideTab.h"
 #include "ads_globals.h"
 
 namespace ads
@@ -37,15 +38,14 @@ namespace ads
 struct SideTabBarPrivate;
 class CDockContainerWidget;
 class CDockWidgetSideTab;
-class CDockWidgetTab;
 
 /**
  * Side tab widget that is shown at the edges of a dock container.
  */
-class ADS_EXPORT CSideTabBar : public QWidget
+class ADS_EXPORT CSideTabBar : public QFrame
 {
     Q_OBJECT
-
+    Q_PROPERTY(int sideTabBarArea READ sideTabBarArea)
     Q_PROPERTY(Qt::Orientation orientation READ orientation)
 
 private:
@@ -57,12 +57,12 @@ protected:
     void paintEvent(QPaintEvent* event) override;
 
 public:
-    using Super = QWidget;
+    using Super = QFrame;
 
 	/**
 	 * Default Constructor
 	 */
-    CSideTabBar(CDockContainerWidget* parent, Qt::Orientation orientation);
+    CSideTabBar(CDockContainerWidget* parent, CDockWidgetSideTab::SideTabBarArea area);
 
 	/**
 	 * Virtual Destructor
@@ -94,8 +94,13 @@ public:
 	 */
 	int tabCount() const;
 
-	Q_SIGNALS:
+	/**
-		void sideTabAutoHideToggleRequested();
+	 * Getter for side tab bar area property
+	 */
+	CDockWidgetSideTab::SideTabBarArea sideTabBarArea() const;
+
+Q_SIGNALS:
+	void sideTabAutoHideToggleRequested();
 };
 }